Preparation method of mesoporous tourmaline composite sulfonated polystyrene ion exchange resin with yolk shell structure

The invention relates to a preparation method of mesoporous tourmaline composite sulfonated polystyrene ion exchange resin with an egg yolk shell structure. The method comprises the following steps: firstly, preparing composite resin microspheres, secondly, preparing mesoporous tourmaline composite polystyrene ion exchange resin, then, carrying out sulfonation treatment, and finally, preparing the mesoporous tourmaline composite polystyrene ion exchange resin with an egg yolk shell structure. The mesoporous tourmaline composite sulfonated polystyrene ion exchange resin with the yolk shell structure has relatively high specific surface area and pore volume, so that the mesoporous tourmaline composite sulfonated polystyrene ion exchange resin can still keep relatively good performance in a severe environment. The method has high practical value in practical application, and can be widely applied to the fields of water treatment, wastewater treatment, battery electrolytes, catalysts and the ...

Patch LED light bulb

The present invention provides a patch LED light bulb comprising a lampshade and a base. It further comprises a light source baseboard and a power supply board which are disposed inside the lampshade and electrically connected to each other. The light source baseboard is pasted or soldered with more than one LED chip. The lampshade comprises a cover body and an assembly portion integrally connected to the cover body. The assembly portion is inserted into the base. A limiting slot is provided on the assembly portion. A positioning slot is provided on the light source baseboard. The power supply board abuts against the light source baseboard and is perpendicular to the light source baseboard. The power supply board is integrally connected with a limiting protrusion for inserting to the limiting slot and a positioning protrusion for inserting the positioning slot.

Selection method of marker post fan

The invention relates to a selection method of a marker post fan. The selection method comprises the following steps that actually-measured historical wind speed sequences of all fans in a target wind power plant are subjected to empirical orthogonal function decomposition, and spatial feature vectors and corresponding variance contribution rates of the wind speed sequences are obtained; the variance contribution rates are ranked in a descending order, several front spatial space vectors which are high in variance contribution rate and regularly distributed are selected to be grouped, and the variance contribution rates of the selected spatial feature vectors of various wind speed sequences are more than 90%; the marker post fan and distribution coefficients are selected according to the grouping features of the spatial feature vectors.

Extraction method and device of ultrasonic wave characteristic parameters

The invention discloses an extraction method and an extraction device of ultrasonic wave characteristic parameters. The extraction method of the ultrasonic wave characteristic parameters includes: reading an ultrasonic wave from a document obtained in advance; performing filtering processing on the ultrasonic wave so as to obtain a wave shape of the ultrasonic wave after being filtered; extracting a pulse wave shape from the wave shape of the ultrasonic wave after being filtered; performing characteristic value calculation on the pulse wave shape so as to obtain peak value, the phase position, duration time and energy of the ultrasonic wave; extracting the peak value, the phase position, the duration time and the energy of the ultrasonic wave. The extraction method and the extraction device of the ultrasonic wave characteristic parameters solve the problem that the ultrasonic wave characteristic parameters can not be extracted in the prior art, and achieve effects of extracting the ultrasonic ...

Stretching device and movable sofa

The invention relates to a stretching device and a movable sofa, the stretching device comprises a base, a seat frame assembly, a backrest assembly used for installing a backrest and a foot rest assembly used for installing a foot pad, the seat frame assembly comprises a seat frame plate and a supporting rod, and the tail of the supporting rod is connected with the base and can swing relative to the base; the base or a supporting carrier for supporting the base is provided with a fulcrum for limiting the downward deflection of the supporting rod; a connecting rod is riveted to the side wall of the supporting rod, a fixed revolute pair node and a movable revolute pair node are arranged on the two sides of the riveting position of the connecting rod respectively, the fixed revolute pair node is connected with the base, a rear connecting rod is connected between the movable revolute pair node and the seat frame plate, and a front connecting rod is connected between the supporting rod and the ...

Traditional Chinese medicine composition for treating arthropathy as well as preparation method and application of traditional Chinese medicine composition

The invention discloses a traditional Chinese medicine composition for treating arthropathy and a preparation method and application thereof. The traditional Chinese medicine composition comprises the following components in parts by weight: 40-60 parts of radix clematidis, 40-60 parts of safflower, 40-60 parts of monkshood, 40-60 parts of radix aconiti agrestis, 40-60 parts of liquorice, 40-60 parts of borneol, 40-60 parts of rhizoma drynariae, 40-60 parts of scutellaria baicalensis, 40-60 parts of angelica sinensis, 40-60 parts of scorpion, 40-60 parts of stiff silkworm, 30-50 parts of salvia miltiorrhiza, 40-60 parts of scorpion, 30-50 parts of dried ginger, 30-50 parts of frankincense, 30-50 parts of pseudo-ginseng, 20-40 parts of garden balsam stem, 20-40 parts of kadsura pepper stem, 20-40 parts of radix angelicae pubescentis, 30-50 parts of ligusticum wallichii, 30-50 parts of The traditional Chinese medicine composition for treating the joint bone diseases has the effects of relaxing ...

Automatic retraction and mechanical extension device for movable sofa legs

The invention discloses an automatic retraction and mechanical extension device for movable sofa legs. The device comprises a mechanical extension device, a switching device and an automatic retraction device, wherein the switching device consist of a handle ring, a handle shank, a handle support and a handle spring; the automatic retraction device consists of an automatic rotating piece, a rotating pipe, a spring hanger and a retraction spring; the handle ring is rotationally connected with the handle shank; the handle shank is rotationally connected with the handle support; the handle support is fixed on a seat frame mounting plate; the rotating pipe is rotationally connected with the seat frame mounting plate; the automatic rotating piece is fixed on the rotating pipe; the spring hanger is rotationally connected with the automatic rotating piece; the handle spring is arranged between the seat frame mounting plate and the handle shank; the retraction spring is arranged between the seat ...

Entry driving machine is with preventing blockking up interior spray nozzle

The utility model discloses an entry driving machine is with preventing blockking up interior spray nozzle belongs to borehole operation equipment field. Including the inside nozzle main part of sending water hole, hole for water spraying and bell mouth that is provided with, offer a horizontal chamber along the orientation of perpendicular hole for water spraying in the nozzle main part, horizontal intracavity sets up one at the gliding slider of horizontal intracavity, offers on the slider and send the water hole corresponding through -hole, and slip and the hole for water spraying cooperation that the through -hole passes through the slider forms the water spray passageway of big microvariation. The utility model discloses a water spray passageway can dynamicly dwindle and enlarge, realizes the automatic clear of plug, has lengthened the live time of nozzle greatly, also no longer needs manual cleaning simultaneously, has practiced thrift manpower and material resources.

Method for preventing tobacco root-knot nematode by using entomopathogenic nematode dead body agent

Provided is a method for preventing tobacco root-knot nematode by using an entomopathogenic nematode dead body agent, which belongs to the technical field of biological prevention and control of tobacco disease insect pests. The problem that conventional tobacco root-knot nematode causes destruction of the ecological environment when chemical prevention is adopted is solved. The method comprises the following step of putting the entomopathogenic nematode dead body agent at roots of tobacco seedlings when the tobacco seedlings are transplanted, to allow entomopathogenic nematode to be slowly released from the entomopathogenic nematode dead body agent, so that the tobacco root-knot nematode is prevented. The entomopathogenic nematode dead body agent is galleria mellonella dead bodies infected by entomopathogenic nematode. According to the invention, the method can replace chemical pesticides to prevent tobacco root-knot nematode, is ecological and environment-friendly, and is high in security ...

Quantitative analysis method and device for influence of regional extreme weather on fan body

The embodiment of the invention provides a quantitative analysis method and device for the influence of regional extreme weather on a fan body, and the method comprises the steps: determining fan affected parts corresponding to different meteorological disaster types according to historical meteorological information and historical fan fault information, and determining performance quantitative indexes corresponding to the fan affected parts; according to the to-be-processed meteorological disaster information, the performance quantitative index corresponding to the affected part of the fan and a fan affected quantitative model, the corresponding fan affected degree is determined, and the current operation range boundary of the fan is adjusted according to the fan affected degree; the extreme weather adaptability of the wind turbine generator can be effectively improved, the operation range of the wind turbine generator is expanded, and safe and stable operation of a high-proportion new ...

New energy power station grid connection adaptability analysis method and system

The invention discloses a master station and substation coordinated new energy power station grid-connected adaptability analysis method and system. The method comprises the following steps: S1, dispatching a master station to carry out calculation task distribution through an edge gateway; s2, the new energy substations asynchronously execute calculation tasks according to working conditions; s3, the edge gateway collects calculation terminal results and section information of the substations, and compresses, encrypts and returns the calculation terminal results and the section information; and S4, the scheduling master station aggregates the return results of the plurality of substations to execute grid-connected adaptability analysis. According to the method, an existing centralized calculation mode is expanded, and by introducing an edge calculation related technology, calculation resources of a new energy power station end are fully utilized, so that the multi-source data fusion degree ...

LED light bulb

The present invention provides an LED light bulb comprising a transparent lampshade, a base, a transparent stem, a transparent seat, a power supply board fixedly mounted on the transparent seat, a first rigid conductive wire passing through the transparent stem, second rigid conductive wires passing through the transparent stem and connecting to the power supply board, and LED filaments fixedly connected to the first rigid conductive wire and the second rigid conductive wires. The second rigid conductive wires are two in number. The LED filaments are two or more in number. Each of the LED filaments are evenly distributed around the transparent stem, and each of the second rigid conductive wires is connected to at least one of the LED filaments.

ELECTRIC MECHANICAL STRETCHING DEVICE OF MOVABLE SOFA

Disclosed is an electrical mechanical stretching device of a movable sofa, comprising a mechanical stretching device and an electrical device, wherein the mechanical stretching device comprises a third leg rod and a third connecting rod. The electrical device consists of a motor sliding block connecting pipe, a motor, a motor leg fixing pipe, a motor guide rail and a motor sliding block. The motor is provided with the motor guide rail. The motor sliding block is mounted on the motor guide rail. A motor head is rotatably connected via a second rotating shaft to the motor leg fixing pipe which is fixed on the third leg rod. The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe which is fixed on the third connecting rod. A base of the mechanical stretching device is connected by two bottom connecting pipes. 13-. (canceled)4. An electrical mechanical stretching device of movable sofa , comprising:a mechanical stretching device;a driving device;whereinthe driving device includes a leg fixing tube, a sliding block connecting tube, a sliding block, and a driving part;both ends of the leg fixing tube and the sliding block connecting tube are fixedly mounted on the mechanical stretching device respectively;the sliding block is mounted on the driving part;the driving part is rotatably connected to the leg fixing tube; andthe sliding block is rotatably connected to the sliding block connecting tube.5. The electrical mechanical stretching device of movable sofa of claim 4 , whereinthe mechanical stretching device includes two third leg rods and two third connecting rods;both ends of the leg fixing tube are fixedly connected to the two third leg rods respectively; andboth ends of the sliding block connecting tube is fixedly connected to the two third connecting rods respectively.6. The electrical mechanical stretching device of movable sofa of claim 4 , wherein the driving part is a motor.7. The electrical mechanical ...

Electric and mechanical stretching device of movable sofa

The invention relates to an electric and mechanical stretching device of a movable sofa. The electric and mechanical stretching device comprises a mechanical stretching device and an electric device, wherein an electric connecting rod is arranged on the mechanical stretching device. The electric and mechanical stretching device is characterized in that the electric device comprises a motor, a motor connecting pipe, a motor movement slide block and a motor head fixing element, wherein the motor adopts a lead rail motor; the motor movement slide block is arranged on a lead rail of the motor; a motor head is rotationally connected with the motor head fixing element fixed on the electric connecting rod through a second rotating shaft; the motor connecting pipe is rotationally connected with the motor movement slide block through a first rotating shaft; the motor connecting pipe is fixed on the mechanical stretching device, and is fixed on a linkage element of the mechanical stretching device ...

Markov model-based new energy output time sequence simulation method and device

The invention provides a new energy output time sequence simulation method and device based on a Markov model, and relates to the technical field of electrics.The new energy output time sequence simulation method comprises the steps that meteorological parameters of the generation power of new energy are determined according to the characteristics of new energy output; obtaining the probability of the meteorological parameters based on a state transition probability matrix; establishing a new energy output model based on the influence factor meteorological parameters; establishing a state transition probability matrix based on the influence factors; and constructing a new energy output sequence based on a Markov chain model according to the probability of the meteorological parameters and on the basis of the output model and the state transition probability matrix. According to the Markov model-based new energy output time sequence simulation method and device provided by the invention, ...

Shield excavating device and shield machine

The invention provides a shield excavating device and a shield machine. The shield excavating device comprises a base, a slewing bearing, a slewing driving device, a movable arm cylinder, a movable-arm cylinder and a bucket. A fixed ring of the slewing bearing is fixed on the base, the tail of the movable arm is hinged to a movable ring of the slewing bearing, one end of the slewing driving device is connected onto the base, the other end of the slewing driving device is connected to the movable ring, one end of the movable-arm cylinder is hinged to the movable ring, the other end of the movable-arm cylinder is hinged to the movable arm, and the bucket is hinged to the front end of the movable arm. Since the shield excavating device adopts the slewing bearing instead of an existing turning bearing with a sleeve structure and the slewing bearing is compact in structure and shorter, the excavating device of the shield machine can be downsized; the slewing bearing has the advantages of being ...

Jet-flow optical waveguide drop point brightness enhancing structure for fire monitor and brightness enhancing method thereof

The invention discloses a jet-flow optical waveguide drop point brightness enhancing structure for a fire monitor and a brightness enhancing method thereof, and applies to the field of fire protection. According to the jet-flow optical waveguide drop point brightness enhancing method for the fire monitor, jet flow, especially the jet-flow drop point, is brighter than the ambient environment, the gray scale of a water channel image and a background image in a fire control system based on machine vision can be increased, and the recognition accuracy of a water channel can be increased, so that an image of the jet-flow drop point is treated more conveniently. Besides, a the jet-flow drop point of the fire monitor is required to be obviously brighter than the ambient environment, computer image processing is facilitated, or the method has great application value for application occasions requiring naked eye recognition, such as an indoor large-space fire monitor with an automatic control function ...

Retro LED light bulb

The present invention provides a retro LED light bulb comprising a transparent lampshade and a base fixedly connected with the transparent lampshade. It further comprises a transparent stem inside the transparent lampshade, a power supply board fixedly mounted on the transparent stem, rigid conductive wires passing through the transparent stem and connecting to the power supply board, and an LED filament fixedly connected to the rigid conductive wires; the rigid conductive wires are two in number; the LED filament is in U-shape; two ends of the LED filament are respectively connected to the rigid conductive wires as one-to-one connection. Since the LED filament is supported by the rigid conductive wires, and the LED filament is bent into a U-shape, the light emitted by the LED filament will not be blocked by the stem easily, resulting in more uniform light and better illumination effect.

Voice quality inspection method and device, computer equipment and storage medium

The invention relates to a voice quality inspection method and device, computer equipment and a storage medium. The method comprises the following steps: in response to a resource interaction voice quality inspection task corresponding to a resource interaction service center, obtaining a voice data text set corresponding to the resource interaction voice quality inspection task; inputting the voice data text information into a keyword extraction model to obtain at least one model extraction keyword; according to a custom keyword extraction condition corresponding to the resource interaction voice quality inspection task, performing custom keyword extraction on each piece of voice data text information to obtain at least one custom extraction keyword; and carrying out keyword fusion on each model extraction keyword and each definition extraction keyword to obtain each voice quality inspection keyword corresponding to the resource interaction voice quality inspection task. According to the ...

Synthetic ammonia system based on fluctuating hydrogen source and control method thereof

The invention discloses a synthetic ammonia system based on a fluctuating hydrogen source and a control method thereof. The nitrogen supply device is used for introducing nitrogen into the hydrogen storage container to keep the pressure in the hydrogen storage container stable, so that the amount of hydrogen provided by the hydrogen supply device in the ammonia synthesis system is kept stable; besides, the hydrogen supply device with fluctuated hydrogen quantity, for example, can be a hydrogen production device for producing hydrogen by using green electric energy, so that the ammonia synthesis system based on the fluctuating hydrogen source provided by the invention can meet the traditional raw material synthesis gas application scenario, and also can be used for producing hydrogen by using green electric energy. The method can also be well suitable for an application scene that raw material hydrogen is obtained by producing hydrogen through green electric energy, and stable production ...

Split type ventilative structure of leak protection steel for ladle

The utility model provides a split type ventilative structure of leak protection steel for ladle, relates to the split type ventilative structure of leak protection steel, including air brick body (1), brick cup (2), metal attachment (3) with fill up brick (4), is equipped with air brick body (1) on the upper portion of pad brick (4), is equipped with metal attachment (3) in the outside of air brick body (1), the area that fills up brick (4) is greater than metal attachment (3) and fills up the area of contact of brick (4), the interior bore dimension of brick cup (2) is by the dimensional design that fills up brick (4) to provide to the curved surface between brick cup (2) and pad brick (4), the utility model discloses a to fill up the area of contact of area design for being greater than metal attachment and pad brick of brick to provide to the curved surface between brick cup and pad brick, reached the purpose that increases the security of ladle use.

Substation safety alarm device

The invention relates to the technical field of safety alarm equipment, and discloses substation safety alarm equipment which comprises an outer shell, a fuse link is fixedly installed on the left side of an inner cavity of the outer shell, and a wiring terminal I with one end in contact with the fuse link for electric conduction is fixedly installed on the left side of the exterior of the outer shell through a left end cover. The middle of the inner cavity of the outer shell is movably sleeved with a conductive shaft sleeve, one end of the conductive shaft sleeve is in contact conduction with the fuse link, the right side of the conductive shaft sleeve is fixedly provided with a linkage sleeve rod, the outer surface of which is movably connected with the right side end of the outer shell, and the right side outside the outer shell is fixedly provided with a wiring terminal II through a right end cover. According to the transformer substation safety alarm equipment provided by the invention ...

Modeling method, model and acquisition method of satellite relative phase keeping strategy model

The invention relates to the field of aerospace, and provides a modeling method, a model, an acquisition method, equipment and a medium for a satellite relative phase keeping strategy model, and the modeling method comprises the steps: S1, obtaining a plurality of satellite training state data sets; s2, inputting states of a first satellite and a second satellite at an initial moment of a satellite training state data set into the model, and obtaining all semi-major axis control behaviors and corresponding output Q values after the initial moment; s3, obtaining a semi-major axis control behavior; s4, obtaining rewards and states of the first satellite and the second satellite at the next moment; s5, the satellite combination state data set is stored in an experience pool; s6, multiple satellite combination state data sets are taken out, and a target value is calculated; s7, calculating an error, and updating a neural network weight parameter; s8, updating the Q value; s9, repeatedly executing ...

Method for preparing bupropion hydrobromid crystal I

The invention relates to a method for preparing bupropion hydrobromid crystal I, which comprises: heating bupropion hydrobromid crystal I or mixture of the bupropion hydrobromid crystal I and bupropion hydrobromid crystal II, of which the chemical purity is qualified, to 150 to 210 DEG C, keeping the temperature at 150 to 210 DEG C for 0.5 to 10 hours, and cooling to room temperature to the bupropion hydrobromid crystal I which is the target product. According to the result of powder X-ray diffraction (PXRD) detection, the target product does not have the characteristic peak of the bupropion hydrobromid crystal II; and an initiative raw material is converted into the bupropion hydrobromid crystal I completely. The result of high performance liquid chromatography (HPLC) detection indicates that new impurities are not produced and that the impurity content does not change. The method has the advantages of simple and convenient operation, suitability for industrial mass production, small environment-protection ...

Method and device for adjusting voltage ride-through characteristic parameters of direct-drive fan

The invention provides a direct-drive fan voltage ride-through characteristic parameter adjusting method and device, and the method comprises the steps: carrying out the control operation of a grid-side electrical parameter and a machine-side electrical parameter, and obtaining a grid-side control output instruction and a machine-side control output instruction; wherein the control operation comprises outer ring control, inner ring control and modulation control; inputting the network side control output instruction and the machine side control output instruction into a converter to obtain a phase-locked loop signal; wherein the converter comprises a grid-side converter connected with a grid side and a machine-side converter connected with a machine side; the grid-side converter and the machine-side converter are connected in series and then connected to a power grid; and inputting the phase-locked loop signal to the grid side through the power transmission line, analyzing the electrical ...

Safe operation analysis method and device for new energy unit under low voltage ride through working condition

The invention provides a safe operation analysis method and device for a new energy unit under a low-voltage ride-through working condition, and relates to the field of new energy power supply. Comprising the steps of determining a machine end output change curve of the new energy collection system in a low-voltage ride-through fault occurrence process based on a relation between machine end output voltage and machine end output current in the new energy collection system; adjusting the short-circuit ratio of the new energy collection system according to a preset machine end output voltage safety boundary value and the machine end output change curve; and determining a safe operation recommendation domain of the new energy unit in the low voltage ride-through fault recovery process according to the adjusted short circuit ratio and the machine end output change curve. According to the method, the range of the capacitive reactive current degree supported by the new energy unit in the low-voltage ...

Christmas light

A novel Christmas light comprises a head and a shade. A lighting device is mounted inside the shade. The lighting device comprises an LED light, a printed circuit board and a power supply module. The LED light is a patch type LED light. The printed circuit board comprises a first printed circuit board and a second printed circuit board. The first printed circuit board is positioned upright. The second printed circuit board is placed flat below the first printed circuit board. The first printed circuit board and the second printed circuit board are perpendicular to each other and fixedly connected with each other. The patch type LED light is welded to a lower bottom surface of the second printed circuit board. The power supply module is mounted on the first printed circuit board. The first printed circuit board and the head are fixedly connected with each other.

Fan inverter control parameter identification method and device

The invention provides a fan inverter control parameter identification method and device, and relates to the technical field of power system simulation. The method comprises the following steps: acquiring data of a fan inverter control system model, and dividing the data into two parts, one part serving as training data and the other part serving as verification data; the optimization differential evolution algorithm expands the population range of variation individuals; and comparing an active power predicted value calculated by using the identified control model parameters with an active power measured value obtained according to the verification data, and determining a verification result of parameter identification according to a comparison result. The device executes the method. According to the method and device provided by the embodiment of the invention, the identification efficiency and precision of the control parameters of the fan inverter can be improved.

Method and device for measuring primary frequency modulation coefficient of voltage source type wind turbine generator

The invention provides a method and device for measuring a primary frequency modulation coefficient of a voltage source type wind turbine generator, and the method comprises the steps: applying step disturbance to an active power reference value of a simulation test model of a voltage source type wind turbine generator connected to a power grid, and obtaining an output active power curve of the voltage source type wind turbine generator; obtaining peak time and maximum overshoot of power response according to the output active power curve; obtaining the natural frequency and damping ratio of a transfer function corresponding to the voltage source type wind turbine generator according to the peak time and the maximum overshoot of the power response; and according to the natural frequency, the damping ratio and the primary frequency modulation coefficient formula, the actual value of the primary frequency modulation coefficient is accurately measured, so that the primary frequency modulation ...

Smooth grid connection method and device for optical storage unit under VSG control

The invention provides a smooth grid connection method and device for an optical storage unit under VSG control, and relates to the technical field of photovoltaic power generation, and the method comprises the steps: obtaining a prediction controlled output equation of the optical storage unit under VSG control through model prediction control; selecting a phase angle difference and an angular frequency difference of the grid-connected system as performance indexes to construct a target function of model prediction control, and adding an angular frequency variable quantity into a weighting coefficient of the target function to perform adaptive adjustment of converter output frequency and phase angle pre-synchronization control; and the obtained optimal solution acts on the grid-connected system as the optimal input mechanical power increment. According to the invention, on the basis of a model prediction control strategy, the angular frequency variation of the optical storage unit in the ...

Many selections of shank activity sofa mechanical expansion means

The utility model relates to a many selections of shank activity sofa mechanical expansion means, including the left side part, the right side part, the switch block, extension spring, self -locking spring, back reset spring, the left side part, the right side part all is equipped with the shank structure, the S spacing connecting piece that slides, S sliding connection one, sliding connection two, sliding connection three, sliding connection four, sliding connection five, S shank drive connecting piece, support piece before the S, support piece behind the S, S assists the installed part, S installs the curb plate, S sits the frame mounting panel, the back impeller, S back of the body locating part, fixed connector, S back of the body connecting piece, the S back of the body is the piece even, S cable drive connecting piece, S cable fixed connector, S side pipe fittings, the turn -ups mounting. Optional shank structure has two kinds, adopts eight parts and six parts respectively, but the ...

Seat and linkage device thereof

The invention discloses a seat and a linkage device thereof, the linkage device is suitable for the seat with a swinging function, the linkage device comprises a seat frame, and further comprises a swinging assembly rotationally connected with the seat frame; the linkage mechanism comprises a connecting rod assembly and a stretching assembly connected with the connecting rod assembly, and the connecting rod assembly is connected with the swinging assembly; the backrest assembly is connected with the connecting rod assembly; the driving mechanism is connected with the swinging assembly and the stretching assembly and used for driving the stretching assembly to move between the sitting posture and the lying posture; when the driving mechanism drives the stretching assembly to move to a set stroke from the sitting posture to the lying posture, the connecting rod assembly limits the swing assembly to rotate relative to the seat frame. The seat and the linkage device thereof are simple in structure ...

Novel and highly efficient method for preparing nanocrystal boehmite

The invention relates to a novel and highly efficient method for preparing nanocrystal boehmite, which comprises the steps of: taking 0.5 to 2.5 mol/L AlCl 3.6H2O solution, stirring and adding 1 to 2.8mol/L NaOH solution, wherein the mol ratio between aluminum salt solution and alkaline solution in reaction system solution is: Al/OH equal to 0.33 to 0.67; switching reactant evenly stirred into a high-pressure autoclave, controlling the temperature between 105 DEG C and 160 DEG C, gauge pressure between 0.1Mpa and 0.5Mpa, and reaction time between 1hr and 10hr, cooling to room temperature, suction filtering, rinsing and drying for 10hr at the temperature of 100 DEG C and finally obtaining solid phase product named nanocrystal boehmite. The nanocrystal boehmite prepared by the method has the advantages of high crystallinity, regular crystal forms, uniform sizes of granules and good dispersibility and the like, thus having good popularization value.

Electric mechanical stretching device of movable sofa

An electrical mechanical stretching device of a movable sofa includes a mechanical stretching device and an electrical device, wherein the mechanical stretching device includes a third leg rod and a third connecting rod. The electrical device consists of a motor sliding block connecting pipe, a motor, a motor leg fixing pipe, a motor guide rail and a motor sliding block. The motor is provided with the motor guide rail. The motor sliding block is mounted on the motor guide rail. A motor end is rotatably connected via a second rotating shaft to the motor leg fixing pipe which is fixed on the third leg rod. The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe which is fixed on the third connecting rod. A base of the mechanical stretching device is connected by two bottom connecting pipes.

System and method for improving intensity of surface acoustic wave sensing signals

The invention discloses a system and method for improving the intensity of surface acoustic wave sensing signals. The system comprises a surface acoustic wave sensing module, a reading module and a wireless power supply module, wherein the wireless power supply module comprises an electric energy emitting unit and an electric energy receiving unit, the electric energy emitting unit is connected with the reading module, and the electric energy receiving unit is connected with the surface acoustic wave sensing module; the surface acoustic wave sensing module comprises a surface acoustic wave sensor, an excitation circuit, a radio frequency amplification circuit, an antenna and an energy storage unit; the reading unit comprises a radio frequency interface unit and a logic control unit. The reading module charges the energy storage unit in the surface acoustic wave sensing module through the wireless power supply technology and further charges the excitation circuit and the radio frequency ...

Information pushing method and device based on relational graph, electronic equipment and storage medium

The invention provides an information pushing method and device based on a relation graph, electronic equipment and a storage medium. The method comprises the following steps: constructing a user relation graph according to a pre-acquired product relation between users, and constructing a product relation graph according to a pre-acquired user relation between products; the product relationship between the users represents whether the two users occupy the same product, and the user relationship between the products represents whether the two products are occupied by the same user; the user relation graph comprises a plurality of user nodes, and the product relation graph comprises a plurality of product nodes; the user node represents a user, and the product node represents a product; according to the connection relation between the user nodes in the user relation graph and the connection relation between the product nodes in the product relation graph, determining the connection probability ...

Wind power plant operation data management system and method

The invention discloses a wind power plant operation data management system and method. The system comprises a wind power plant equipment end, an edge end and a cloud end. The wind power plant equipment end is used for acquiring operation data of a wind power plant and sending the operation data to the edge end; the cloud is used for generating a data processing model according to the demand of the service end and issuing the data processing model to the edge end; and the edge end is used for receiving and storing the operation data, processing the operation data according to the data processing model to generate service data and uploading the service data to the cloud end. According to the method, the data processing model is generated by utilizing the powerful data processing performance of the cloud end, and the edge end performs data processing according to the data processing model, so that the transverse expansion of the data calculation performance is realized, and a communication ...

Air brick steel bushing closing device

The utility model provides an air brick steel bushing closing device, includes that disc -shaped base, base upper surface are equipped with the fitting piece, the outer circumference cover of fitting piece is equipped with the bearing, and the outside and the sleeve cooperation installation of bearing, work platform is ring shape, and work platform's interior circumference fixed connection makes work platform rotate along with bearing sleeve does the circumference around the fitting piece together on the sleeve, the stand sets firmly at the top of fitting piece, is equipped with supporting beam in the one side at stand top, terminal lower part and the hydraulic connection of supporting beam, and hydraulic cylinder piston rod's bottom mounting has a boosting board, and the promotion that pushes down to the steel bushing can be realized along with hydraulic cylinder's piston rod up -and -down motion to the boosting board, makes the steel bushing cooperation compress tightly the outside at ...

Modeling method of alternating current and direct current electric locomotive

The invention provides a modeling method of an alternating current and direct current electric locomotive. The modeling method comprises the following steps: calculating amplitudes and phases of a fundamental wave and harmonic waves of the electric locomotive; by taking the amplitudes and the phases of the fundamental wave and the harmonic waves as random variables, calculating probability density functions of the amplitudes and the phases by using a maximum entropy; then calculating distribution functions of the amplitudes and the phases; establishing a first data table corresponding to the amplitudes of the fundamental wave and the harmonic waves and the distribution function and a second data table corresponding to the phases of the fundamental wave and the harmonic waves and the distribution function in matlab; introducing a matlab interface module into PSCAD and receiving the amplitudes and the phases of the fundamental wave and the harmonic waves according to the first and second ...

Shale sample smashing desorption device

The invention relates to a shale sample smashing desorption device. The shale sample smashing desorption device comprises an iron frame, a limiting plate, a core storage drum, a hand wheel, a toothed rail, a debris collection drum and a cutter. The limiting plate is mounted on a face plate which is fixedly mounted on the iron frame, the core storage drum is mounted on the face plate of the iron frame, the cutter is arranged on one inner side of the core storage drum and connected with a power device, the hand wheel and the toothed rail are arranged outside the other side of the core storage drum, the hand wheel is in meshed connection with the toothed rail through a gear, one end of the toothed rail is connected with the connection plate, the tail end of the connection plate is placed in the core storage drum, and the core storage drum is provided with an air outlet. The shale sample smashing desorption device has the advantages that rock cores can be directly smashed for measurement of ...

Multi -functional theater chair device

The utility model relates to a multi -functional theater chair device, including the left side part, the right side part, electric actuator, the left side part, the right side part all is equipped with the linkage piece, support piece one, support piece two, support piece three, the connecting rod, the footing, the seat support, the curb plate, antitorque side manages fixed mounting on the linkage piece, three support piece rotates with the footing respectively and is connected, linkage piece respectively with support piece no. 1, the connecting rod rotates to be connected, connecting rod and seat rotate bracket connection, the seat support rotates with the curb plate to be connected, the seat support rotates with support piece no. 3 to be connected, the curb plate rotates with support piece no. 3 to be connected, footing both ends and handrail return bend fixed connection, the motor rotates and installs on the handrail return bend, be fixed with the motor guide rail on the motor, motor ...

Coordination control method and device for improving frequency stability of optical storage system

The invention provides a coordination control method and device for improving the frequency stability of an optical storage system. The method comprises the steps that when an optical storage unit, a generator set, a voltage drop generator and an active load are collected through a DC-DC converter and then merged into the system through a DC-AC converter, a rotor motion equation of the system is constructed; dividing the load fluctuation condition of the system, wherein the dividing results are load sudden increase, load sudden decrease and steady-state operation; and corresponding synchronous machine superposition constraint equations are established according to different fluctuation conditions so as to carry out coordination control. The active power change in the system is used as a constraint condition, the control part of the frequency modulation unit is superposed, so that when the system load is changed, the amplitude of frequency fluctuation can be reduced while quick response ...

Heterogeneous vehicle problem CVRP determination method based on improved K-means clustering ant colony algorithm and cloud platform distribution system thereof

The invention provides a heterogeneous vehicle problem CVRP determination method based on an improved K-means clustering ant colony algorithm and a cloud platform distribution system thereof. The method comprises the following steps: establishing a mathematical model of a heterogeneous vehicle problem CVRP; initializing parameters to initialize ant positions, and taking the initialized ant positions as initialized customer points; an improved K-means clustering algorithm is selected for clustering of initial customer points; updating the coordinates of the clustering center and judging whether the difference between the coordinates of the new clustering center and the coordinates of the original clustering center meets the requirement, and if not, re-acquiring the initialized customer points for clustering; if yes, retaining a clustering result; according to the clustering cluster capacity, enabling each clustering cluster to distribute and load a vehicle model with corresponding capacity ...

Method and system for detecting parameters of wind power plant static var compensator

The invention provides a method and system for detecting parameters of a wind power plant static var compensator. The method includes the steps of (1) sending a starting instruction and a running mode instruction to a controller of the static var compensator to enable the static var compensator to be started and run in a running mode specified by the running mode instruction, (2) sending a power phase step instruction in the running mode to the controller of the static var compensator to enable the static var compensator to work at the specified power, (3) sending a measurement triggering signal to a data collection device to enable the data collection device to collect a current signal and a voltage signal of the static var compensator, (4) receiving the current signal, the voltage signal and a starting time value obtained by the data collection device from the static var compensator, and (5) generating the actual response time and the actual power according to the sending time of the ...

Ultra-low earth orbit satellite ground station data transmission tracking method and related equipment

The invention discloses an ultra-low orbit satellite ground station data transmission tracking method and related equipment. The method comprises the following steps: controlling antennas of a U/V frequency band ground station and a high frequency band ground station to point to a forecast position of a target satellite; calculating a predicted position of a target satellite based on satellite telemetry data received by the U/V frequency band ground station; correcting the antenna direction of the high-frequency-band ground station based on the corrected predicted position; and capturing a target satellite through the high-frequency-band ground station and performing data transmission with the target satellite. By utilizing the characteristic of high satellite capturing success rate of the U/V low-frequency-band ground station and the advantage of high transmission speed of the high-frequency-band ground station, the influence of low forecasting precision of the ultra-low-orbit satellite ...

Energy storage capacity configuration method and device of new energy station

The invention provides an energy storage capacity configuration method and device for a new energy station, which can be used in the power grid field or other fields, and the method comprises the steps: obtaining the capacity configuration information of a target new energy station in a plurality of time periods; according to the capacity configuration information corresponding to each time period, determining a scene corresponding to the time period of the target new energy station and an actual output value of energy storage participation in the scene; and determining energy storage optimal capacity configuration of the target new energy station according to a preset wind and light storage optimal capacity configuration model, the actual output value of energy storage participation in the scene corresponding to each time period and the pre-acquired energy storage real-time capacity, the preset wind and light storage optimal capacity configuration model takes the optimal economic benefit ...

Power distribution network source network load energy storage management control method

The invention provides a power distribution network source network load energy storage management control method based on user side comfort based on control targets of user side comfort, economic optimization, low carbon consumption and the like. The method comprises the following steps: firstly, on the basis of commercial and civil buildings, establishing a demand side load and energy storage cost function model; then, on the basis of the controllable distributed micro-source, the micro-gas turbine and the power plant, a supply side power generation cost function including the equipment start-stop cost, the equipment aging cost and the carbon capture cost is established; and finally, predicting the power consumption cost of the demand side and the supply side based on a hybrid gradient descent and Bellman equation, and obtaining an optimal energy management control strategy by adopting a transaction market proxy algorithm. According to the invention, the cost difference of different devices ...

Fluid reversing switching device and sea water desalination energy recycling device

The invention discloses a fluid reversing switching device and a sea water desalination energy recycling device. The fluid reversing switching device comprises an internally embedded cylinder, an externally embedded cylinder and an actuator, wherein two outer cavities which are independent of each other are formed between the internally embedded cylinder and the externally embedded cylinder; flow guide areas are formed at the parts, corresponding to the two outer cavities, of the internally embedded cylinder; flow guide holes which are distributed along the circumference of the internally embedded cylinder are formed in the flow guide areas; the internally embedded cylinder is internally provided with a piston rod connected with the actuator, and two pistons are arranged on the piston rod; a high-pressure water inlet pipe head and a low-pressure water discharge pipe head are arranged on the internally embedded cylinder; water pressure cylinder adapter heads are respectively arranged on ...

Composite negative plate, preparation method and application thereof, and all-solid-state battery

The invention relates to the technical field of lithium ion batteries, in particular to a composite negative plate, a preparation method and application thereof, and an all-solid-state battery containing the composite negative plate. The composite negative plate comprises a negative plate and an interface coating, the negative plate comprises a negative electrode active material layer and a negative electrode active material layer, wherein the negative electrode active material layer contains an active material without lithium; the interface coating contains Li3P and a simple substance metal phase; wherein the interface coating is loaded on the surface of the negative electrode active material layer; wherein in the cycle process of the battery, the interface coating is obtained by in-situ conversion of a coating containing metal phosphide. The composite negative plate provided by the invention can effectively inhibit the growth of lithium dendrites and reduce the interface impedance, and ...

Method and device for evaluating influence of wind power integration on reliability of power system

The embodiment of the invention discloses a method and a device for evaluating the influence of wind power integration on the reliability of a power system. The method comprises the following steps: establishing a wind power output model based on a hidden Markov chain model and a grey wolf optimization algorithm; determining an output interval prediction upper limit and an output interval prediction lower limit of the wind turbine generator based on the wind power output model; and based on the output interval prediction upper limit, the output interval prediction lower limit and a Markov chain reliability evaluation model, sampling to obtain a Markov chain with stable probability distribution of the power system, determining the operation state of the power system based on the Markov chain, and then performing statistical calculation to obtain a reliability index. According to the method, the accuracy of evaluating the influence of wind power integration on the reliability of the power ...

Flexible DC impedance test method and system capable of adaptively adjusting harmonic frequency

The invention discloses a flexible DC impedance test method and system capable of adaptively adjusting harmonic frequency, and belongs to the technical field of impedance test. The method comprises the following steps: acquiring three-phase voltage and three-phase current of a port; based on a preset algorithm, calculating the three-phase voltage and the three-phase current to obtain an impedance amplitude and a phase of the target flexible direct current power transmission system at the frequency point of the injected harmonic wave; according to the impedance amplitude and the phase characteristic, determining the average change rate of the impedance amplitude, and taking the average change rate of the impedance amplitude as a discrimination object to determine the change step length of the harmonic frequency injected in the next calculation period of the target flexible DC power transmission system, and adaptively adjusting the harmonic injected into the flexible direct current power ...

Business product recommendation method and device, equipment and storage medium

The invention relates to a business product recommendation method and device, equipment and a storage medium. Relates to the technical field of artificial intelligence. The method comprises the following steps: firstly, if a login event of a target user is detected, determining a recommended service type corresponding to the target user; determining a target cluster to which the target user belongs from the candidate user clusters according to the user characteristics of the target user; determining a user tag of the target user according to a cluster tag of a target cluster to which the target user belongs; and then, recommending a service product to the target user according to the user characteristics, the user tag and the recommended service type of the target user. When the target user handles the service, the label of the target user can be accurately determined according to the user characteristics of the target user, and the service product recommended for the user is accurately ...

Shale sample is smashed and is separated haustorium

The utility model relates to a shale sample is smashed and is separated haustorium, including iron stand, limiting plate, storage core bucket, hand wheel, cogged rail, collection bits bucket and cutter, the iron stand on fixed mounting have the panel, the limiting plate is installed on the panel, stores up the core bucket and installs on the panel of iron stand, the cutter is arranged the one side of storing up in the core bucket in and is linked to each other with power device, the outside of storing up the opposite side of core bucket is provided with hand wheel and cogged rail, the hand wheel passes through the gear interlock with the cogged rail to be connected, the one end of cogged rail links to each other with the connecting plate, the end of connecting plate is placed in storage core bucket, is provided with the gas outlet on the storage core bucket. The utility model discloses the page or leaf can directly be smashed the core and survey residual gas content, and weak point consuming ...

Preparation method of highly pure magnesium hydroxide nanocrystal

The invention relates to a preparation method of highly pure magnesium hydroxide nanocrystal, which comprises the steps of: mixing and evenly stirring NaOH solution and MgCl2.6H2O solution at room temperature, transferring the mixed material into a high-pressure reaction autoclave and heating to temperature of 124 DEG C to 135 DEG C, keeping the pressure at 0.20 Mpa to 0.32Mpa, then preserving the temperature for 3 hours to 5 hours, naturally cooling and aging, rinsing and suction-filtering the aged solid-liquid mixture on a Buchner funnel, drying the products after suction filtration in a drying oven, cooling and grinding the products, adding the obtained magnesium hydroxide nanocrystal to clean water, stirring, conducting ultrasonic processing and standing; and in such synthesis way, the magnesium hydroxide nanocrystal with purity of 99.2 percent to 99.9 percent, a shape of a hexagonal piece and granule size of 50nm to 100nm can be obtained.

Medical antiseptic solution special plastic bucket

The utility model relates to a medical antiseptic solution special plastic bucket, including staving, handle, valve and bung, characterized by: the bung comprises lid, conical duct and rubber tube cover, and the department is equipped with a round hole at the center of the circular top surface of lid, penetrates a root cone venturi tube in the round hole, and the macrostoma of conical duct is outside, the rounding top facial features of height and lid unanimously, the osculum of conical duct is held in the inboard of lid, has the rubber tube cover at the osculum pot head of conical duct. The beneficial effects of the utility model are that: use in a flexible way, what of the antiseptic solution volume of pouring convenient operation, laborsaving easily control, can reduce the antiseptic solution loss after medical antiseptic solution plastic drum is touched down over.

Wind power plant reactive power control method by taking mountain earth wind resource characteristics into account

The invention provides a wind power plant reactive power control method by taking mountain earth wind resource characteristics into account. The wind power plant reactive power control method comprises the steps of performing characteristic decomposition on the actually measured historical wind velocity sequence of each fan of a target mountain earth wind power plant to obtain various components of the spatial characteristic vector of the velocity sequence and the corresponding variance contribution rates of the various components, ranking the spatial characteristic vector variance contribution rates from large to small and selecting the first spatial characteristic vector having the highest variance contribution rate, allocating the power output of the corresponding fan according to the relative sizes of the various components of the spatial characteristic vector having the highest variance contribution rate and performing off-line optimal calculation on each wind power plant power output ...

Method and device for calculating inertia time constant of voltage source type wind turbine generator

The invention discloses a voltage source type wind turbine generator inertia time constant calculation method and device, and the method comprises the steps: building a simulation test model of a voltage source type wind turbine generator connected to a power grid, and applying step disturbance to the active power of the voltage source type wind turbine generator in the simulation test model, according to the method, an active power curve output by the voltage source type wind turbine generator is obtained, and an inertia time constant of the voltage source type wind turbine generator is calculated according to the active power curve. The method is suitable for analysis and evaluation of grid-connected inertia response characteristics of the voltage source type wind turbine generator set, and a research foundation is laid for popularization, application and safe and stable operation of the voltage source type wind turbine generator set.

Can change rock drill bit of sword number of teeth

The utility model discloses a can change rock drill bit of sword number of teeth, can change rock drill bit of sword number of teeth, including the drill bit main part, set up the dead knife tooth of drill bit main part front end, set up between adjacent dead knife tooth the compression seat and with compression seat elastic connection's movable sword tooth, the top was higher than the dead knife tooth top and holds when activity sword tooth was bounce. The quantity of dead knife tooth is 2-5, and the quantity of activity sword tooth is the same with dead knife number of teeth volume. Set up circular or polygonal slide opening in the compression seat, the inside spring that sets up of slide opening of compression seat, activity sword tooth lower extreme set up with slide opening sliding fit's slider, the slide opening upper end sets up the card limit of blocking the slider. The utility model discloses can change the sword number of teeth according to rock hardness, come the rock of the ...

Electric and mechanical stretching device of movable sofa

The invention relates to an electric and mechanical stretching device of a movable sofa, which comprises a mechanical stretching device and an electric device, wherein the electric device consists of a motor, a motor-driven assembly, a motor head fixing piece and an electric connecting rod; the motor-driven assembly is in a fixed overall structure; a motor head is rotationally connected with the motor head fixing piece fixed on the electric connecting rod; the motor-driven assembly is rotationally connected with the mechanical stretching device by a first rotating shaft, and consists of a motor slide block fixing support, a transmission connecting piece, a fixing support connecting piece and a motor motion slide block; the motor slide block fixing support is fixed on the motor motion slide block; the fixing support connecting piece is connected with the motor slide block fixing support; the motor slide block fixing support is fixedly connected with the transmission connecting piece; the ...

Method and device for evaluating reliability of wind turbine generator with multi-degradation competitive failure

The invention discloses a multi-degradation competition failure wind turbine generator reliability evaluation method and device. The method comprises the following steps: obtaining respective index data of each degradation process in a plurality of degradation processes; adopting a multivariate Wiener process to describe multiple degradation processes of the wind turbine generator based on the index data of each degradation process, and establishing a reliability evaluation model of multivariate degradation; performing sudden failure modeling based on Weibull distribution to obtain a first sudden failure reliability evaluation model of the wind turbine generator; according to the first sudden failure reliability evaluation model and the degradation amount risk coefficients of the various degradation processes, a Weibull competition proportion failure model is adopted to establish a second sudden failure reliability evaluation model; and according to the multivariate degradation reliability ...

Nanofiltration strengthened well irrigation process for supplementing underground water by urban reused water

The invention relates to a nanofiltration strengthened well irrigation process for supplementing underground water by urban reused water. The process comprises the following steps: sequentially carrying out flocculation processing, sedimentation processing and ozone oxidation processing on the two-stage discharge water of a sewage plant and then entering an artificial irrigation return field; after carrying out natural infiltration in the artificial irrigation return field, collecting by a collecting device at the bottom; then entering a nanofiltration system, and injecting the nanofiltrationdischarge water into a deep underground water-containing layer by an irrigation return well to further purify. The adding amount of ozone is confirmed according to the content of DOC in the reused water, 0.5-1.0mg of ozone is added into DOC per milligram, and the cut-off molecular weight of a nanofiltration film is 300 at most. The invention has the following advantages: the nanofiltration film has ...

Hardware-in-the-loop test system based on new energy station and test method and device thereof

The invention provides a hardware-in-the-loop test system based on a new energy station and a test method and device thereof. The hardware-in-the-loop test system based on the new energy station comprises a local new energy station; the external new energy station is connected with the local new energy station in series through a power transmission line; the reactive voltage control system is in communication connection with the local new energy station and is used for controlling reactive power and voltage of the local new energy station; and the grid-side equivalent system is connected with the local new energy station through a power transmission line and is used for reflecting the operation characteristics of an external power grid. According to the invention, the test efficiency can be improved, and the suppression effect of voltage fluctuation and reactive circulation can be efficiently evaluated.

Method and device for cleaning abnormal data of wind turbine generator

The invention provides a wind turbine generator abnormal data cleaning method and device, and the method comprises the steps: obtaining the batch operation data of a target wind turbine generator, and each piece of operation data comprises the wind speed and the corresponding wind turbine generator power; dividing the batch operation data into a low-speed area, a high-speed area and a medium-speed area according to the wind speed in each piece of operation data; determining abnormal operation data in the low-speed area, the high-speed area and the medium-speed area according to the pre-acquired rated power of the wind turbine generator, the power of the wind turbine generator of each piece of operation data and the wind speed of each piece of operation data in the medium-speed area; and deleting the abnormal operation data to obtain cleaned operation data. The accuracy of abnormal data cleaning of the wind turbine generator can be improved.

SVG-based power system simulation device, simulation test method and system

The invention provides an SVG-based power system simulation device, a simulation test method and a simulation test system, and relates to the technical field of electromagnetic simulation. The power system simulation device comprises an SVG module, a power system main circuit module, an external power grid module, a main calculation module, a phase-locked loop control module, an outer loop stability control module, an inner loop stability control module, an inner loop reference value calculation module, a steady state function selection module, a high-low penetrating function module, an inner loop reference value switching module, a voltage stabilization module and a PWM control module. According to the method, the universality and comprehensiveness of SVG-based power system simulation can be improved, so that the related simulation test requirements of the power system are better met, and the convenience of monitoring the corresponding power system is improved.

Electric mechanical extension device for movable sofa

The invention relates to an electric mechanical extension device for a movable sofa. The electric mechanical extension device is mainly suitable for movable sofas, particularly electric rocking chairs and swinging chairs. The electric mechanical extension device for the movable sofa comprises a mechanical extension device and an electric device, wherein the electric device consists of a motor, a front motor connecting pipe, a back motor connecting pipe, a motor head mounting piece, a motor motion slide block, a slide block mounting piece, a rotating connecting piece and a rotating bent piece; the front motor connecting pipe is connected with a leg connecting piece; the motor head mounting piece is connected with the front motor connecting pipe, and is rotationally connected with the motor; the motor motion slide block is arranged on a motor slide rail; the sliding mounting piece is fixed on the back motor connecting pipe, and is rotationally connected with the motor motion slide block; ...

Method and device for controlling access of doubly-fed fan to weak power grid

The invention discloses a control method and device for accessing a double-fed fan into a weak power grid, and the method comprises the steps: adjusting an active power set value of a wind turbine generator in a preset double-machine system model in an active power adjustment range, and determining a maximum active power set value when the voltage of a grid-connected point reaches a low voltage ride through threshold value; keeping the maximum active power set value unchanged, adjusting the reactive power set value within the reactive power adjusting range, and determining the maximum reactive power set value when the voltage of the grid-connected point reaches the high voltage ride-through threshold value; setting the active power set value and the reactive power set value to zero, adjusting the active power set value and the reactive power set value according to the maximum active power set value, the maximum reactive power set value and a preset time length, collecting active power and ...

Seawater pre-treatment method and system capable of controlling reverse osmosis membrane biological pollution

The invention discloses a seawater pre-treatment method capable of controlling reverse osmosis membrane biological pollution. The method comprises the following steps: carrying out a primary pre-treatment on seawater; and then carrying out a positive-charge absorbing and filtering treatment on the seawater which has been subjected to the primary pre-treatment; wherein the positive-charge absorbing and filtering treatment is achieved through a filtering material with positive charges. The invention also discloses a seawater pretreatment system capable of controlling reverse osmosis membrane biological pollution. The method and system mention above are both achieved through a positive-charge absorbing and filtering mode which integrates static absorption and mechanical filtering together; can effectively control the pollutants, which can enter the reverse osmosis membrane system, such as TEP, and the like; thus further control the growth of biological membrane on the reverse osmosis membrane ...

Method and device for identifying broadband oscillation risk of power system

The embodiment of the invention provides an electric power system broadband oscillation risk identification method and device, and the method comprises the steps: determining the damping ratio of an electric power system under each working condition combination according to the grid-connected impedance characteristics of to-be-connected equipment and the electric power system under each working condition combination; performing clustering analysis on the working condition combination of which the damping ratio of the power system is smaller than an oscillation threshold value, and determining a broadband oscillation risk point; the method can effectively, conveniently and accurately identify the risk point easily causing broadband oscillation in the power system.

Source-load power storage network structure and overvoltage treatment method

The invention relates to the technical field of distributed power grid control, in particular to a source load power storage grid structure and an overvoltage treatment method. Then, according to the bus voltage and a predetermined range of the voltage, the voltages of the plurality of load lines are balanced by repeatedly iterating between determining the plurality of target load feeders and adjusting the outputs of the plurality of target distributed power sources. According to the embodiment of the invention, the voltage of the plurality of load feeders in the source-load storage power grid is adjusted by adopting a mode of repeated iteration between finding the target load feeder exceeding the preset voltage range and adjusting the distributed power supply influencing the target load feeder, so that the purpose of stabilizing the voltage in the distributed power grid is achieved; according to the method, the target distributed power supply is analyzed and determined based on the influence ...

Rice is castrated and cuts clever special scissors

The utility model discloses a rice is castrated and cuts clever special scissors, its main part is a scissors, the scissors cut the tooth first section bias its do the plane that the action of opening and shutting formed the time, be the arc bent 25 -35 degree of side bend that makes progress, fix on the tooth outer wall is cut to the upside through bracing link with cutting the cambered surface plate washer that flank surface parallel set up, bracing link's height is 0.2mm, the width of arc plate washer should be with two 30 degrees V -arrangement pruning wounds covers of cutting between the tooth. The beneficial effects of the utility model are that: the advantage of this special use scissors at first is that the operation is accurate, can light prevent the loose powder effectively, guarantees work quality. The second is convenient operation, because as an organic whole with the combination of several kinds of indispensable instruments, it is convenient not only to trade the hand in the ...

Kitchen fitting material synthesized by polyphenylene sulfide

The invention relates to a kitchen fitting material synthesized by polyphenylene sulfide, which comprises the following materials: 8-15% of polyphenylene sulfide, 15-25% of glass fibre, 66-69.9% of high temperature nylon and 0.1-1% of modified auxiliary agent. The kitchen tools prepared by the material has anti-bacterium and easy cleaning functions, the kitchen tools can inhibit bacterial growing, and have hydrophilic performance for easy cleaning, the usage is safe and convenient. The kitchen fitting material has the advantages of high temperature resistance, durable performance, difficult aging, convenient cleaning, environmental protection and no pollution, no lead, no toxicity, acid resistance and alkali resistance, and is not corroded by acid and oil in food, and has the advantages of no taint of odor, no oxidation, high hardness, corrosion resistance, excellent heat modification resistance, thermal shock resistance and impact force resistance.

Service and cooperation information interaction method and system based on LBS (Location Based Service)

The invention discloses a service and cooperation information interaction method and system based on an LBS (Location Based Service). The system is simple in structure and convenient for operation, and comprises an intelligent terminal device supporting the LBS, application software used for information interaction and based on the LBS, as well as a system component and a server for realizing the information transmission. A user can utilize the intelligent device to mount an application software platform; a service request or a cooperation request is sent in a classification section of the software platform; the fact that other users within a radius range can receive the reminding of the cooperation request is set by taking the geographic position of the user as a center; another user checks the reminding list to determine whether to participate in the cooperation of the event or not; if the user accepts the cooperation, the user participates in the cooperation; the users participating ...

Voltage source type wind turbine generator oscillation suppression and parameter optimization method

The invention discloses an oscillation suppression and parameter optimization method for a voltage source type wind turbine generator, which is characterized by comprising the following steps of: S1, setting a frequency modulation dead zone, and selecting the frequency modulation dead zone by adopting a hysteresis mode; s2, additional damping control and parameter optimization are carried out, and a co-driver control branch is added in a reactive power-voltage loop of the voltage source type wind turbine generator; a frequency modulation dead zone function in a voltage source type wind turbine generator control strategy is added to avoid frequent fluctuation of generator output and power oscillation caused by fluctuation of system frequency near rated frequency, and different frequency dead zones are selected according to an access point short-circuit ratio and generator operation conditions in consideration of actual engineering application; mechanical angle deviation is introduced to ...

Electromagnetic transient simulation error evaluation processing method and device

The invention provides an electromagnetic transient simulation error evaluation processing method and device, and relates to the technical field of power system simulation. The method comprises the steps of obtaining to-be-analyzed data of electromagnetic transient simulation, and performing transformation processing on the to-be-analyzed data to obtain a direct-current component, a low-frequency component and a high-frequency component; calculating an amplitude difference quantity and a characteristic difference quantity of each frequency point according to the direct current component, the low frequency component and the high frequency component, and calculating a global difference quantity of each frequency point according to the amplitude difference quantity and the characteristic difference quantity; and calculating an overall error index according to a normal distribution function, the amplitude difference quantity, the characteristic difference quantity and the global difference ...

Sofa waist proping device

A sofa waist propping device includes a frame and a waist adjusting mechanism, the frame being fixed on a sofa or a seat, the waist adjusting mechanism comprising a backrest and a first driving member rotatably connected to the frame respectively, the first driving member being rotatably connected to the backrest and driving the backrest to rotate around the frame. Since the first driving member is rotatably connected to the backrest and drives the backrest to rotate around a fixing member, the position of the backrest is adjusted, with a structure simple and stable and comfortableness increased.

Method for preventing tobacco root-knot nematode by using entomopathogenic nematode suspending liquid

Provided is a method for preventing tobacco root-knot nematode by using an entomopathogenic nematode suspending liquid, which belongs to the technical field of biological prevention and control of tobacco disease insect pests. The problem that conventional tobacco root-knot nematode causes destruction of the ecological environment when chemical prevention is adopted is solved. The method comprises the following step of pouring the entomopathogenic nematode suspending liquid to soil of roots of tobacco seedlings in a large growing land, when the tobacco seedlings are transplanted from a seedling-raising disc to the large growing land, to allow entomopathogenic nematode to be slowly released from the entomopathogenic nematode suspending liquid, so that the tobacco root-knot nematode is prevented. The entomopathogenic nematode suspending liquid is a mixture composed of water and entomopathogenic nematode dispersed in the water. According to the invention, the method can replace chemical pesticides ...

Simulation system and simulation method of wind turbine generator

The embodiment of the invention discloses a simulation system and a simulation method of a wind turbine generator. The simulation system comprises an RT-LAB (Reverse Transcription Laboratory) simulation device and a Bladed simulation device. An electrical part model of the wind turbine generator is configured in the RT-LAB simulation equipment, and the RT-LAB simulation equipment is connected with a converter controller and a main controller of the wind turbine generator and used for transmitting first simulation data between the RT-LAB simulation equipment and the converter controller and sending second simulation data to the Bladed simulation equipment through the converter controller and the main controller; a pneumatic part model of the wind turbine generator is configured in the Bladed simulation equipment, and the Bladed simulation equipment is connected with a main controller of the wind turbine generator and used for transmitting third simulation data to the main controller and ...

Direct-driven wind turbine generator modeling method and device

The invention relates to a direct-driven wind turbine generator modeling method and device. The method includes: acquiring a low voltage ride through measured characteristic curve and test data of a direct-driven wind turbine generator to be modeled through low voltage ride through field test; comparing low voltage ride through characteristics of the direct-driven wind turbine generator to be modeled with information stored in a direct-driven wind turbine model base, finishing wind turbine type matching and wind turbine characteristic matching, and finding out a known wind turbine generator model most similar to the direct-driven wind turbine generator to be modeled from the direct-driven wind turbine model base; determining to-be-identified parameter objects of the direct-driven wind turbine generator to be modeled according to the parameter type of the known wind turbine generator model, and taking parameters of the known wind turbine generator model as initial parameters of the to-be-identified ...

System and method for taking and reusing water from riverway supplemented with recycling water

The invention discloses a system and method for taking and reusing water from a riverway supplemented with recycling water, belonging to the technical field of water pollution treatment. The system adopts a method of combining a reoxygenation-type shore filter with a nanofiltration membrane, and takes water from the riverway supplemented with recycling water; and after being purified, the water can be reused as various types of non-direct drinking water. Recycling water entering the riverway satisfies the IV class water requirement (TN<10mg/L) of environmental quality standard for surface water (GB3838-2002). The method comprises the following steps: arranging the reoxygenation-type shore filter along the shore of the riverway; removing parts of soluble organic matters, ammonia nitrogen and the like in river water by the degradation action of microorganisms; and causing shore filtered water to enter a two-level nanofiltration system to remove most organic matters, nitrate nitrogen, inorganic ...

Nanofiltration strengthened well irrigation process for supplementing underground water by urban reused water

The invention relates to a nanofiltration strengthened well irrigation process for supplementing underground water by urban reused water. The process comprises the following steps: sequentially carrying out flocculation processing, sedimentation processing and ozone oxidation processing on the two-stage discharge water of a sewage plant and then entering an artificial irrigation return field; after carrying out natural infiltration in the artificial irrigation return field, collecting by a collecting device at the bottom; then entering a nanofiltration system, and injecting the nanofiltrationdischarge water into a deep underground water-containing layer by an irrigation return well to further purify. The adding amount of ozone is confirmed according to the content of DOC in the reused water, 0.5-1.0mg of ozone is added into DOC per milligram, and the cut-off molecular weight of a nanofiltration film is 300 at most. The invention has the following advantages: the nanofiltration film has ...

Method and equipment for calculating soil pollutant exposure

The invention provides a method and a device for calculating soil pollutant exposure. The soil pollutant exposure calculation method comprises the following steps: acquiring vital sign data of a wearer of the electronic equipment and pollutant measurement data transmitted by the Internet of Things, analyzing the vital sign data of the wearer, dividing the vital sign data of the wearer into human influence factor data and environmental influence factor data, and calculating the exposure of the soil pollutants according to the human influence factor data and the environmental influence factor data. According to the pollutant measurement data transmitted by the Internet of Things at each moment, the human influence factor data at each moment and the environmental influence factor data at each moment, calculating exposure quantity fragment data of the influence factor data at each moment; and accumulating the exposure quantity fragment data of the influence factor data at each moment in the ...

Distribution network feeder classification processing method and device

The invention provides a distribution network feeder classification processing method and device, and relates to the technical field of distribution network data processing. The method comprises the following steps: acquiring distributed photovoltaic access characteristics of a distribution network feeder line; the distributed photovoltaic access characteristics comprise a feeder voltage fluctuation sequence reflecting inherent characteristics of a feeder and a power flow characteristic sequence reflecting operation characteristics of the feeder; preprocessing the feeder voltage fluctuation sequence and the power flow characteristic sequence to obtain standardized data; and performing clustering calculation on the standardized data by using a preset clustering algorithm to obtain a clustering result. The device executes the method. According to the distribution network feeder classification processing method and device provided by the embodiment of the invention, accurate classification ...

QUICK MOUNTING HOLDER STRUCTURE FOR SINKING MECHANICAL EXTENSION DEVICE OF FUNCTIONAL SOFA

The present invention discloses a quick mounting holder structure for sinking mechanical extension device of functional sofa, which includes a mounting support, a stretchable component, a backrest component, and a main body. The mounting support, the stretchable component, the backrest component are rotatably installed in the main body. The mounting support includes a crossbeam and at least one mounting piece. The crossbeam includes a side panel. At least one mounting piece is fixed on the side panel and is perpendicular to the side panel. The mounting support and wooden frame are fixed by an electric drill using a screw through the mounting hole. The operation is simple and quick. Further, at least one mounting piece is fixed on the side panel, lowering the mounting height, so that the height of the whole sofa and rocking chair is lowered. Thus, the comfortableness of the user is improved. 1. A quick mounting holder structure for sinking mechanical extension device of functional sofa , comprisinga mounting support;a stretchable component;a backrest component; anda main body;whereinthe mounting support, the stretchable component, and the backrest component are rotatably installed on the main body;wherein the mounting support includes a crossbeam and at least one mounting piece;the crossbeam includes a side panel;the at least one mounting piece is fixed on the side panel;the at least one mounting piece is perpendicular to the side panel; andat least one fixing hole and at least one mounting hole are provided on the at least mounting piece.2. The quick mounting holder structure for sinking mechanical extension device of functional sofa of claim 1 , whereinthe at least one mounting piece is made by bending the side panel with; andan opening is formed between the at least one mounting piece and the side panel.3. The quick mounting holder structure for sinking mechanical extension device of functional sofa of claim 1 , wherein the at least one mounting piece is parallel ...

Efficient food processing raw material mixing device

The utility model discloses a high-efficiency food processing raw material mixing device, which belongs to the technical field of food processing equipment and comprises a box body assembly and a mixing assembly, supporting legs are mounted at four corners below the box body assembly, and the mixing assembly is mounted in the middle of the upper part of the box body assembly. According to the raw material mixing device, through cooperation of the mixing assemblies, the mixing motor drives the lifting rod to rotate, the driving gear drives the driven gear to rotate, so that the mixing plate is driven to rotate, the mixing plate conducts mixing operation on raw materials, meanwhile, the lifting rod rotates, the materials at the lower end in the mixing box are lifted to the upper end, and the raw materials are further mixed; the raw material mixing uniformity is guaranteed to meet the use requirement of subsequent food processing, the purpose of efficiently mixing the food processing raw materials ...

Photovoltaic output prediction method and device

The invention provides a photovoltaic output prediction method and device, and the method comprises the steps: obtaining numerical weather forecast data, and obtaining the numerical weather forecast data and snow thickness prediction data of a target photovoltaic station in a prediction time period from the numerical weather forecast data; according to the snow covering thickness prediction data and the snow covering thickness prediction model, the snow covering thickness in the prediction time period is obtained; obtaining a snow covering state according to the snow covering thickness of the target photovoltaic station in the prediction time period and a snow covering state judgment rule; according to the numerical weather forecast data and the snow covering state of the target photovoltaic station in the prediction time period, obtaining prediction input data, and according to the snow covering state of the target photovoltaic station in the prediction time period, obtaining a corresponding ...

Voltage control method and device for multi-type new energy power generation unit

The embodiment of the invention provides a voltage control method and device for multiple types of new energy power generation units, and the method comprises the steps: determining a corresponding target reactive current proportionality coefficient according to the system information and actual terminal voltage of each type of new energy power generation unit through a preset constraint condition; through a preset simulation system, voltage simulation is carried out according to the target reactive current proportionality coefficient corresponding to each type of new energy power generation unit and the system information, a simulation result is obtained, and the optimal reactive current proportionality coefficient corresponding to each type of new energy power generation unit is determined. According to the transient reactive support capabilities of a wind power generation unit, a photovoltaic power generation unit, an energy storage converter and a dynamic reactive compensation device ...

Intelligent detection device for micro leakage of gas pipeline

The invention discloses an intelligent detection device for micro leakage of a gas pipeline. The device comprises a walking assembly; the control assembly is connected to the walking assembly and controls the walking assembly to advance along a preset inspection route; and the data acquisition assembly is connected to the walking assembly and moves along the inspection route along with the walking assembly, and when passing through the inspection well, the data acquisition assembly acquires the concentration of methane gas in the inspection well. According to the invention, the detection range of micro leakage of the gas pipeline is expanded.

Wind power determination method and device based on probability prediction

The invention provides a wind power determination method and device based on probability prediction, and can be used in the technical field of electric power. The method comprises the following steps: for different wind resource regions, searching historical power prediction working conditions similar to power prediction working conditions of the wind resource regions at future moments in a power prediction historical database of the wind resource regions; for each wind resource region, determining power prediction error probability distribution of the wind resource region according to a wind power prediction error under a historical power prediction working condition similar to the power prediction working condition of the wind resource region at a future moment; determining power prediction error probability distribution of the whole network according to the power prediction error probability distribution of each wind resource region; and according to the whole network prediction error ...

MECHANICALLY-STRETCHING DEVICE FOR AUTOMATIC FOLDING OF MOVABLE SOFA LEGS

A mechanical stretching device for automatically folding a movable sofa leg includes a mechanical stretching device, a switching device, and an automatic folding device. The switching device includes a handle ring (), a handle shank (), a handle support () and a handle spring (). The automatic folding device includes an automatic rotating part (), a rotating tube (), a spring hanging piece (), folding spring (). The handle ring () is rotatably connected to the handle shank (). Handle shank () is rotatably connected to the handle support (). The handle support () is fixed on the base frame mounting plate (). The rotating tube () is rotatably connected to the base frame mounting plate (). The automatic rotating part () is fixed on the rotating tube (). The spring hanging piece () is rotatably connected to the automatic rotating part (). 1. (canceled)2. (canceled)3. A mechanical stretching device for automatically folding a movable sofa leg , comprising:a base frame mounting plate; anda leg,whereinthe mechanical stretching device for automatically folding a movable sofa leg further comprises an automatic folding device;the automatic folding device comprises an automatic rotating part, a rotating tube, an elastic element hanging piece, and an elastic element;the rotating tube is rotatably connected to the base frame mounting plate through a fourth rotating shaft;the automatic rotating part is fixed on the rotating tube;the elastic element hanging piece is rotatably connected to the automatic rotating part through a third rotating shaft;the leg is connected to the automatic rotating part;when an angle between a direction of a force generated by the elastic element and a horizontal line is less than an angle between the horizontal line and a connecting line of the third rotating shaft and the fourth rotating shaft, a force generated by the elastic element makes the leg to fold; andwhen the angle between the direction of the force generated by the elastic element and the ...

Quick closing device for low-pressure oil pipeline

The invention provides an oil cylinder, a low-pressure oil pipeline quick-closing device and a steam turbine, and relates to the field of quick-closing devices used on main steam pipelines in the petrochemical field, the low-pressure oil pipeline quick-closing device comprises the oil cylinder, a seat component, a driving component and an energy storage component, the seat component and the driving component are oppositely arranged, and the energy storage component is arranged between the seat component and the driving component; when the driving component is located at the first position, the valve mechanism cuts off the working medium; the seat member is arranged to be capable of abutting against the driving member, the driving member is made to be in the first position through the energy storage member in the natural state, so that the valve mechanism is closed, and when the valve mechanism needs to be conducted, the seat member is firstly driven to abut against the driving member, and ...

Control system and method of direct-current self-synchronizing enhanced permanent magnet direct-driven fan

The invention discloses a control system and method of a direct-current self-synchronizing enhanced permanent magnet direct-driven fan. The control system comprises a wind driven generator, a machine side converter, a direct current capacitor, a grid side converter and a power grid side structure. The method comprises the following steps: a machine-side converter controls the machine-side converter through a power control ring, a first current inner ring, a first Park converter and a first space vector pulse width modulator; the grid-side converter is controlled through a synchronous ring, a reactive power-voltage droop ring, a voltage outer ring, a second current inner ring, a second Park converter and a second space vector pulse width modulator, and finally control over the wind driven generator is achieved. Networking capability and inertia support are provided for the direct-drive fan, the synchronization performance of the direct-drive fan under a weak network is improved, the problem ...

Method and device for detecting oscillation of power unit

The invention provides a power unit oscillation detection method and device, and relates to the technical field of power equipment operation and maintenance, and the method comprises the steps: applying a first disturbance signal, and determining a first power parameter; applying a second disturbance signal, and determining a second electric power parameter; wherein the positive sequence disturbance frequency and the negative sequence disturbance frequency of the first disturbance signal are target frequencies, and the positive sequence disturbance frequency and the negative sequence disturbance frequency of the second disturbance signal are complementary frequencies; obtaining a first response component and a first coupling response component based on the first power parameter, and obtaining a second response component and a second coupling response component based on the second power parameter; and obtaining impedance information based on the first response component, the first coupling ...

Seat, headrest and waist support three-linkage mechanical stretching device

The invention relates to a seat, headrest and waist support three-linkage mechanical stretching device, and relates to the technical field of functional sofas, the seat, headrest and waist support three-linkage mechanical stretching device comprises an iron stand, a seat frame, a driving assembly, a back insertion piece and a stretching mechanism, the stretching mechanism comprises a back insertion driven piece which is rotatably arranged on the back insertion piece and is used for installing a waist support; the linkage plate is rotationally arranged on the iron stand; the pushing assembly is arranged on the seat frame and is rotationally connected with the back inserting piece and the linkage plate; and the headrest rotating assembly is arranged on the back insertion driven piece and is used for driving the headrest to move. The driving assembly is started to push the backrest to move, and the linkage plate drives the headrest and the waist support to rotate at the same time; and then ...

中空纤维作为生物膜载体的方法和装置

The present invention relates to an air pollution control technique by utilizing bio-membrane method to treat malodorous gas pollutant. After the residual waste dregs produced in the course of tobaccoproduction is fermented, the malodorous gas can be produced to pollute air to a certain extent. Said invention adopts the hollow fibre as carrier, and the bacteria seed in the active sludge can be used as main bacteria seed on the bio-membrane of carrier so as to create the bio-membrane reactor to remove the malodorous gas.

Data-driven power grid flexibility margin quantification method and system

The invention discloses a data-driven power grid flexibility margin quantification method and system, and relates to the technical field of power grid operation flexibility, and the method comprises the steps: constructing a wind and light output space-time correlation set based on a Copula theory according to a historical wind power generation data set and a historical photovoltaic power generation data set; reducing the wind and light output space-time correlation set by using a scene reduction method based on probability distance to obtain a net load typical scene, and further establishing a power grid flexibility demand model, a power supply side flexibility supply model and a demand side flexibility supply model; and based on the flexible supply-demand balance constraint, with the goal of minimizing the sum of the power supply side consumption cost of the power grid, the demand side discharge loss compensation cost of the power grid and the penalty cost corresponding to the flexibility ...

Distributed energy storage optimization processing method and device

The invention provides a distributed energy storage optimization processing method and device, and relates to the technical field of power distribution processing. The method comprises the following steps: acquiring a vulnerability index of the power distribution network; determining a target power distribution network vulnerability index corresponding to the power distribution network node type, and determining a power distribution network target node participating in the solution calculation of the distributed energy storage optimization model according to the target power distribution network vulnerability index; and determining the target node of the power distribution network as an initialization parameter of a solving algorithm for solving the distributed energy storage optimization model, solving the distributed energy storage optimization model by using the solving algorithm, and determining a solving result as a distributed energy storage optimization result. The device executes ...

Comprehensive quantitative evaluation method and device for operation characteristics of wind power plant

The invention provides a comprehensive quantitative evaluation method and device for operation characteristics of a wind power plant, and relates to the technical field of wind power. The method comprises the following steps: acquiring cross-platform multi-stage wind power operation data; determining a unit state recognition result according to the cross-platform multi-stage wind power operation data; and according to the unit state identification result and the wind power plant operation evaluation index, obtaining a wind power plant operation characteristic comprehensive quantitative evaluation result. The device executes the method. According to the comprehensive quantitative evaluation method and device for the operation characteristics of the wind power plant provided by the embodiment of the invention, the operation characteristics of the wind power plant can be accurately evaluated.

SEBS composition for solid tire and preparation method of SEBS composition

The invention discloses an SEBS composition for a solid tire and a preparation method of the SEBS composition, and relates to a solid tire material and a preparation method of the solid tire material, and the solid tire rubber material comprises SEBS, a synthetic polyolefin elastomer, POE grafted maleic anhydride, polypropylene, white oil, CaCO3, a wear-resistant agent, an antioxidant and an anti-ultraviolet absorbent. The invention also provides application of the solid tread rubber material in preparation of a solid tire. In order to prevent the problems of tire burst, manual tire puncturing and the like which influence the riding safety, the application of an inflation-free solid tire is particularly important. The prepared solid tire has the characteristics of being resistant to pricking and long in service life, and is better in wear resistance and rebound resilience and excellent in comprehensive physical performance. The formula material disclosed by the invention is used for manufacturing ...

Air brick fired at low temperature by using gel and preparation process thereof

The invention relates to an air brick fired at low temperature by using a gel and a preparation process of the air brick. The raw materials of the air brick include an aggregate and a fine powder, wherein the weight ratio of the aggregate to the fine powder is 6.5:3.5-7:3; the alumina gel fine powder is used as a binding agent; due to the addition of the alumina gel particle having quite high chemical activity into the air brick in the firing process of the air brick at the temperature being lower than 800 DEG C, the air brick body has high strength; the addition of chromium sesquioxide fine powder can effectively improve the capacities of resisting the permeability of molten steel and the erosion by the steel slag in the use process of the air brick, so as to ensure the good application performance of the air brick; and the firing temperature of the air brick provided by the invention is controlled at 500-800 DEG C, but the firing temperature of a traditional air brick is generally higher ...

Method for preparing minced fillets without rinsing

The invention provides a method for preparing minced fillets without rinsing by applying food-grade protease inhibitors, which comprises the following steps: sequentially treating and cleaning raw fishes; extracting fish meat; adding antifreezes and protease inhibitors; stirring; standing at low temperature; packaging; quickly freezing; and then, preserving by freezing to obtain the minced fillets without rinsing. Because the rinsing process is not needed, the invention reduces the environmental pollution of the waste water, reduces the loss of the nutrient components of the minced fillets and improves the yield of the minced fillets. The invention also provides a minced fillet product without rinsing.

Sofa Waist Proping Device

The present invention discloses a sofa waist proping device comprising a frame and a waist adjusting mechanism, the frame being fixed on a sofa or a seat, the waist adjusting mechanism comprising a backrest and a first driving member rotatably connected to the frame respectively, the first driving member being rotatably connected to the backrest and driving the backrest to rotate around the frame oppositely. Since the first driving member is rotatably connected to the backrest and drives the backrest to rotate around a fixing member, the position of the backrest is adjusted, with a structure simple and stable and comfortableness increased.

Sofa Pillow Driving Device

The present invention discloses a sofa pillow driving device, which comprises a side plate mounting member, a headrest mounting member, and a driving device, the sofa pillow driving device further comprises a rotation limit member and an elastic member, the rotation limit member being rotatably connected to the side plate mounting member, the headrest mounting member being rotatably connected to the rotation limit member, one end of the elastic member being connected to the headrest mounting member and the other end being connected to the rotation limit member, one end of the driving device being rotatably connected to the rotation limit member and the other end being rotatably connected to a backrest wood frame, the driving device drives the headrest mounting member to rotate by the rotation limit member. 1. A sofa pillow driving device comprising a side plate mounting member , a headrest mounting member , and a driving device , characterized in that the sofa pillow driving device further comprises a rotation limit member and an elastic member , the rotation limit member being rotatably connected to the side plate mounting member , the headrest mounting member being rotatably connected to the rotation limit member , one end of the elastic member being connected to the headrest mounting member and the other end being connected to the rotation limit member , one end of the driving device being rotatably connected to the rotation limit member and the other end being rotatably connected to a backrest wood frame , the driving device driving the headrest mounting member to rotate by the rotation limit member.2. The sofa pillow driving device of characterized in that the rotation limit member is provided with a second rotation connecting hole claim 1 , the rotation limit member being rotatably connected to the side plate mounting member by a rotation shaft passing through the second rotation connecting hole.3. The sofa pillow driving device of characterized in that the ...

Unfolding device of sofa

The present application relates to an unfolding device of sofa, including a base. A side plate is provided above the base, and a connecting rod assembly is connected between the side plate and the base; the side plate is provided with a mounting assembly for connecting to a sitting portion; a footrest assembly and a backrest connecting member is mounted on and rotatably connected with the side plate; the base is provided with a driving assembly, configured for driving the footrest assembly to rotate and the side plate to move towards a front of the unfolding device.

Konstrukcja uchwytowa szybkiego montażu do osadzania mechanicznego urządzenia przedłużającego funkcjonalnej sofy

Unfolding device of sofa

The present application relates to an unfolding device of sofa, including a base. A side plate is provided above the base, and a connecting rod assembly is connected between the side plate and the base; the side plate is provided with a mounting assembly for connecting to a sitting portion; a footrest assembly and a backrest connecting member is mounted on and rotatably connected with the side plate; the base is provided with a driving assembly, configured for driving the footrest assembly to rotate and the side plate to move towards a front of the unfolding device.

LED decorative bulb and LED lamp string

An LED decorative bulb and an LED lamp string containing a plurality of LED decorative bulbs. Each LED decorative bulb contains a housing and a light source assembly inside the housing; the light source assembly has a driving circuit and some LED light sources; the driving circuit contains a rectifier, a digital signal decoder, a plurality of switch tubes, a diode, a capacitor, a first power supply end and a second power supply end; the driving circuit and the LED light sources are so connected such that the LED light sources receives higher voltages to increase brightness and thereby enhancing the decorative effects.

lamp containing a rotation prevention structure

A lamp, having a lampshade, a lamp holder, a connective structure, a light source component, and a power supply component; the lampshade has a cover body and a mounting seat; one end being defined as a first end of the connective structure is connected with the lampshade, with another end being defined as a third end connected with the lamp holder; the mounting seat is mounted to the first end; the lamp holder is fitted with the third end; a rotation prevention structure between the mounting seat and the first end is given to prevent rotation of the lampshade relative to the connective structure; the rotation prevention structure contains anti-rotation ribs and anti-rotation grooves corresponding to the anti-rotation ribs; the anti-rotation ribs are fitted in the anti-rotation grooves.

LED circuit board

An LED circuit board that includes an insulation board provided with connecting holes and a holding column, and at least two circuit boards; a first circuit board has a through hole, and a second circuit board has connecting columns; the connecting columns are detachably inserted in the connecting holes; the holding column is detachably inserted in the through hole; the insulation board is made of fire-retardant and fire-resistant plastic material.

Greitai tvirtinama laikiklio konstrukcija, skirta nuleisti funkcinės sofos mechaninio ištiesimo įtaisą

Sofa with turnable backrest

The present application relates to sofa with a turnable backrest, including a sofa seat frame, a backrest body, and an extension mechanism, wherein the backrest body is connected to the sofa seat frame through the extension mechanism; the extension mechanism is configured to turn and flatten the backrest body from a backrest position of the sofa seat frame to a position above a sitting position, and configured to turn the backrest body back to the backrest position.

Sofa unfolding device

The present application relates to a sofa unfolding device capable of avoiding forward overturning, including a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via the linkage assembly, the leg rest assembly is rotatably connected to a front end of the seat via the linkage assembly, a support mechanism is connected on the front end of the seat and comprises an abutting member and a support member, the abutting member is rotatably connected with the linkage assembly via a first pivot, and the support member is rotatably connected with the abutting assembly via a second pivot and is rotatably connected with the seat via a third pivot.

Ammonia synthesis system based on fluctuating hydrogen source and control method thereof

An ammonia synthesis system and a control method thereof are provided. The ammonia synthesis system includes a hydrogen supply device, where a fluctuating amount of hydrogen is provided by the hydrogen supply device; a hydrogen storage container configured to store the hydrogen provided by the hydrogen supply device; and a nitrogen supply device configured to communicate with the hydrogen storage container to introduce nitrogen into the hydrogen storage container to maintain a stable pressure in the hydrogen storage container. The nitrogen supply device is able to introduce nitrogen into the hydrogen storage container, thus the amount of hydrogen provided is stable; in addition, the ammonia synthesis system can not only meet requirements of application scenarios where synthesis gas is produced from conventional raw material, but also be well applied to application scenarios where hydrogen for ammonia synthesis is obtained from hydrogen generation by green electricity.

Ammonia Synthesis System Based On Fluctuating Hydrogen Source And Control Method Thereof

An ammonia synthesis system and a control method thereof are provided. The ammonia synthesis system includes a hydrogen supply device, where a fluctuating amount of hydrogen is provided by the hydrogen supply device; a hydrogen storage container configured to store the hydrogen provided by the hydrogen supply device; and a nitrogen supply device configured to communicate with the hydrogen storage container to introduce nitrogen into the hydrogen storage container to maintain a stable pressure in the hydrogen storage container. The nitrogen supply device is able to introduce nitrogen into the hydrogen storage container, thus the amount of hydrogen provided is stable; in addition, the ammonia synthesis system can not only meet requirements of application scenarios where synthesis gas is produced from conventional raw material, but also be well applied to application scenarios where hydrogen for ammonia synthesis is obtained from hydrogen generation by green electricity.

Lamp containing a rotation prevention structure

A lamp, having a lampshade, a lamp holder, a connective structure, a light source component, and a power supply component; the lampshade has a cover body and a mounting seat; one end being defined as a first end of the connective structure is connected with the lampshade, with another end being defined as a third end connected with the lamp holder; the mounting seat is mounted to the first end; the lamp holder is fitted with the third end; a rotation prevention structure between the mounting seat and the first end is given to prevent rotation of the lampshade relative to the connective structure; the rotation prevention structure contains anti-rotation ribs and anti-rotation grooves corresponding to the anti-rotation ribs; the anti-rotation ribs are fitted in the anti-rotation grooves.

Ammonia synthesis system based on fluctuating hydrogen source and control method thereof

CP0023-AU-0586 ABSTRACT An ammonia synthesis system and a control method thereof are provided. The ammonia synthesis system includes a hydrogen supply device, where a fluctuating amount of hydrogen is provided by the hydrogen supply device; a hydrogen storage container configured to store the hydrogen provided by the hydrogen supply device; and a nitrogen supply device configured to communicate with the hydrogen storage container to introduce nitrogen into the hydrogen storage container to maintain a stable pressure in the hydrogen storage container. The nitrogen supply device is able to introduce nitrogen into the hydrogen storage container, thus the amount of hydrogen provided is stable; in addition, the ammonia synthesis system can not only meet requirements of application scenarios where synthesis gas is produced from conventional raw material, but also be well applied to application scenarios where hydrogen for ammonia synthesis is obtained from hydrogen generation by green electricity. - 26- CP0023-AU-0586 control center 12 10 circulating gas compressor I supplyuni 1 05 um a0 m ntrogen compressor unit 03 1 new energy hydrogen h hydrogen r ammonia power supply compressor synthesis supply unit device | unit unit 1101 06 08 09 . air low- medium- high arseparation -- pressure pressure pressure devichydrogen hydrogen hydrogen deie07 storage storage storage 02 container container container Figure 1