Formula multiloop plant specimen strile -backs at center

The utility model discloses a formula multiloop plant specimen strile -backs at center, including the furnace body for take up liquid, the furnace body inlet for to fill fluid in the furnace body, the combustor, it makes and sets up the combustion chamber of the inboard lower part of furnace body produces the heat of combustion, the exhaust port for the stove cigarette that the internal cause burning of discharge combustion chamber produced, other end open structure is sealed for one end in the combustion chamber, the heat exchanger that constitutes by heat exchange tube and water tank, the heat exchange tube of heat exchanger is located boiler steam space, and the water tank setting of heat exchanger is on the furnace body, and it is still including setting up at the preceding smoke -box of furnace body one end, setting up the back smoke -box at the furnace body other end to and backward flow tobacco pipe, the backward flow tobacco pipe runs through preceding smoke -box of furnace body ...

Liquefied air storage system and method

The invention relates to the technical field of industrial gas, in particular to a liquefied air storage system and method.The liquefied air storage system comprises a storage device, a reliquefaction device and a refrigeration device.The storage device comprises a storage tank suitable for storing liquid air, and the storage tank is provided with a first inlet and a first outlet; the reliquefaction device comprises a reliquefaction device provided with a second inlet and a second outlet, the second inlet is communicated with the first outlet, the second outlet is communicated with the first inlet, the refrigeration device comprises a liquid nitrogen tank suitable for containing liquid nitrogen, and the liquid nitrogen tank is connected with the reliquefaction device to cool the reliquefaction device. Gaseous air in the storage tank has an overflow state of overflowing towards the re-liquefier side along the first outlet and the second inlet, and liquid air in the re-liquefier has a backflow ...

Liquid hydrogen lossless efficient heat insulation storage device

The invention provides a liquid hydrogen lossless efficient heat insulation storage device which structurally comprises a base, a bottom plate, a storage device, an opening and closing handle and a supporting column, the upper end of the base is fixedly embedded in the outer wall of the lower end of the bottom plate, and the outer wall of the lower end of the storage device is clamped to the outer wall of the upper end of the bottom plate in an embedded mode. The double-layer vacuum interlayer arranged in the heat insulation box can isolate the external temperature and the internal temperature of the heat insulation box to the greatest extent, and the double-layer vacuum interlayer is added on the basis that heat conduction media such as air do not exist in vacuum, so that the external temperature is difficult to conduct to the interior of the heat insulation box; the temperature of the heat insulation box is difficult to conduct to the outside to achieve heat preservation of the interior ...

Method for preparing high-purity magnesium oxide by pyrolysis of magnesium chloride

The invention relates to a method for preparing high-purity magnesium oxide by pyrolysis of magnesium chloride. The method comprises the following steps of: (1) dissolving salt lake bischofite or old brine, and then removing B2O3 and SO2<-4>, so as to obtain a magnesium chloride solution with the mass concentration of 29-32%; (2) preconcentrating the magnesium chloride solution, spraying the preconcentrated magnesium chloride solution into a pyrolysis reactor by virtue of a nozzle, decomposing under the conditions that the decomposition temperature is 500-650 DEG C, the pressure is -80 to -20Pa and the decomposition time is 1-5 seconds to obtain themolysis products of magnesium oxide and themolysis tail gas; and (3) sintering the pyrolysis product magnesium oxide sequentially subjected tohydration purifying, washing and filtering to obtain high-purity magnesium oxide with the MgO content of more than 99.0%. The invention has the advantages of simple process, low cost, high raw material ...

Solar refrigeration air-conditioning device

The invention discloses a solar refrigeration air-conditioning device. A heat collection device, a condensing device and a heat exchange device form a circulating system, wherein the heat collection device comprises a light collection plate, the upper end and the lower end of the light collection plate are respectively communicated with an upper liquid material tank and a lower liquid material tank, and the upper liquid material tank is communicated with the condensing device; and the heat exchange device comprises an evaporator and an absorber, wherein the evaporator is communicated with the condensing device and installed in a water tank, the absorber is communicated with the evaporator; the upper end and the lower end of the absorber are both communicated with a solution heat exchange device, and the other end of the solution heat exchange device is respectively communicated with the upper liquid material tank and the lower liquid material tank. The invention has large refrigeration ...

Condensation integral type boiler

The utility model discloses a condensation integral type boiler, including the furnace body for take up liquid, the furnace body inlet for to fill fluid in the furnace body, the combustor, it makes and sets up the combustion chamber of the inboard lower part of furnace body produces the heat of combustion, the exhaust port for the stove cigarette that the internal cause burning of discharge combustion chamber produced, other end open structure is sealed for one end in the combustion chamber, the furnace body outside still is provided with gas gas heater, gas gas heater includes flue gas pipeline and heat exchange tube, the exhaust port links to each other with gas gas heater's flue gas pipeline. The technical scheme of the utility model have raise the efficiency, the advantage of energy saving.

Method for preparing magnesium cement with partial thermal decomposition of bischofite

The invention provides a method for preparing magnesium cement from magnesium chloride by partial pyrolysis. The method comprises the following steps: salt lake bischofite or salt lake brine is put in pyrolysis equipment, the decomposition temperature is between 450 and 750 DEG C, the decomposition time is between 5 and 90 minutes; the bischofite is subjected to the partial pyrolysis to obtain solid products containing magnesia and the magnesium chloride; and the solid products are mixed with water to be pasty so as to obtain the chlorine oxygen magnesium cement, and the mol ratio of MgO to MgCl2 of which is between 4 to 1 and 6 to 1. Compared with the prior process for preparing the magnesium cement, in the method of the invention, the light calcinated magnesia does not need to be stirred with a magnesium chloride solution to form the magnesium cement, but the bischofite or the brine directly undergoes the pryolysis and then is mixed with water to form the magnesium cement, therefore the ...

Treatment method for phenolic water produced by gas producer

The invention provides a treatment method for phenolic water produced by a gas producer. According to the method, lower-segment high temperature gas of the gas producer heats and evaporates water so as to obtain high temperature steam, and the high temperature steam is used as an intermediate heat-transferring medium for heating air, thereby recovering heat in the high temperature gas; and a part of the produced high temperature steam atomizes phenolic water into tiny droplets through a steam atomizing nozzle, atomized phenolic water and the high temperature steam are used as a gasifying agent together and sent to the gas producer, and phenolic water is completely decomposed after burning at a high temperature of more than 1100 DEG C, producing no secondary pollution. Since the method adopts waste heat of the high temperature gas produced by the gas producer, no energy is consumed except a small amount of electric energy needed by a water pump, so operation cost is low, low temperature ...

Switched reluctance motor system based on bus current sampling and winding current obtaining method thereof

The invention discloses a switched reluctance motor system based on bus current sampling. The switched reluctance motor system comprises a switched reluctance motor, a power converter, a rotating speed detecting device, current sensors and a controller. The phase current of the SRM system is analyzed, the influence on the phase current waveform by different open sections is discussed, and the phase current overlapping and non-overlapping conditions in a current chopping section are analyzed. According to the phase current overlapping condition, high-frequency impulses are injected into all under-phase tubes in an overlapping section, A/D sampling is triggered at the pulse low level to discompose the direct-current bus current, the injection high-frequency impulse frequency and the A/D sampling frequency are highly synchronous, information of all the open sections is combined, phase currents in all the phase conducting sections can be effectively rebuilt, the use quantity of the sensors ...

Method for regulating luminescence property of europium doped yttrium borate film

The invention discloses a method for regulating the luminescence property of a europium doped yttrium borate film. The method comprises the following steps: (1) mixing water solutions of water-soluble yttrium salt, water-soluble europium salt, boric acid and alcohol, and mixing and dissolving the alcohol and water; (2) adding a cross-linking agent and a chelating agent into a mixture obtained in the step (2); (3) allowing the mixture obtained in the step (2) to react for 3-5 hours and then standing for 24-48 hours; (4) plating a silicon base plate at a plating speed of 0.88mm/s-1.52mm/s; (5) roasting and annealing after plating to obtain a YBO3:Eu<3+> film. The method disclosed by the invention has the advantages that a soil-gel dipping plating method for preparing a YBO3:Eu<3+> nanometer material has the advantages of being simple in equipment, low in cost, low in reaction temperature, easy in chemical component control and adjustable in luminescence spectrum (an orange luminescence peak ...

Solar water heater with glass vacuum heat collection water tank

The invention discloses a novel solar water heater with a glass vacuum heat collection water tank, which consists of a glass vacuum heat collection water tank, a vacuum heat collection tube, an isolated upper water drainage device built in the vacuum heat collection tube, a vacuum heat collection tube end enclosure and a connecting pipe. The vacuum heat collection water tank for the novel solar heater instead of the conventional stainless steel water tank makes a radical change in the thermal circulation mode and upper water drainage mode of the novel solar heater and has the most outstandingcharacteristics of reducing the cost of the solar heater and solving the problems of scaling and scale depositing in the vacuum heat collection tube.

Boiler uptake that can multi -direction unpacking lid

The utility model discloses a boiler uptake that can multi -direction unpacking lid, including the box, set up in boiler furnace body one end, communicate each other with exhaust pipe in the furnace body, one side opening of box, on one side of the case lid, the open -ended of cover box, it is used for the limit of being connected that links to each other with the box to be provided with at least two on the case lid, it is articulated with the box that articulated elements detachably is passed through on the connection limit. The technical scheme of the utility model can satisfy the user opened the direction to the case lid different demands.

Vertical normal-pressure T-shaped water supply boiler

The invention discloses a vertical normal-pressure T-shaped water supply boiler. The vertical normal-pressure T-shaped water supply boiler comprises a T-shaped boiler shell cylinder, and is characterized in that the boiler shell cylinder is a T-shaped boiler, wherein a water outlet and a fire opening device are arranged at the upper end of the T-shaped boiler; a water inlet and a chimney are arranged at the lower end of the T-shaped boiler; a boiler liner cylinder in the boiler shell cylinder is positioned at the upper end; a vertical smoke pipe is positioned at the lower end; a transverse boiler liner cylinder is an arched boiler liner cylinder; the boiler liner cylinder is connected to the smoke pipe through a boiler liner cylinder groove in the lower end of the boiler liner cylinder; the lower end of the smoke pipe is communicated with the chimney through a smoke chamber. The flame direction of the T-shaped water supply boiler is downward, the flowing direction of flame hot air is also ...

Integrative plant specimen of condensation

The utility model discloses an integrative plant specimen of condensation, include: the furnace body for take up liquid, the combustor, it makes and sets up the combustion chamber of the inboard lower part of furnace body produces the heat of combustion, the exhaust port for the stove cigarette that the internal cause burning of discharge combustion chamber produced, the inside vacuum state of maintaining of furnace body seals formation, be provided with the heat exchanger in the furnace body, the heat exchanger comprises the hot -water line, the upper portion both ends lateral wall and the setting of the hot -water line straight -flow furnace body are in the liquid level top of liquid, the furnace body outside still is provided with gas gas heater, gas gas heater includes flue gas pipeline and heat exchange tube, the exhaust port links to each other with gas gas heater's flue gas pipeline. The technical scheme of the utility model have and raise the efficiency, the advantage of energy ...

Multi -functional plant specimen of electrical heating

The utility model discloses an electrical heating plant specimen, include: the furnace body for take up liquid, be located the electric heating wire pipe of the inboard lower part of furnace body for be the heat with electrical energy conversion, be located the front tube sheet and the back tube sheet at furnace body both ends, the electric heating pipe of setting on front tube sheet and back tube sheet for hold electric heating wire, the inside vacuum state of maintaining of furnace body seals formation, furnace body inside is provided with two at least heat exchangers, the heat exchanger comprises the hot -water line, the upper portion lateral wall and the setting of the hot -water line straight -flow furnace body are in the liquid level top of liquid. The technical scheme of the utility model can be more accurate, the temperature of liquid in the convenient and fast ground control furnace body more, moreover, one of them heat exchanger can be used for the heating, another heat exchanger ...

Flue gas condenser

The utility model discloses a flue gas condenser, flue gas condenser includes heat exchanging chamber and sets up the at least genshui pipe in heat exchanging chamber, offer on heat exchanging chamber's the lateral wall and be used for to the water inlet of water injection in the water pipe and the delivery port that is used for the intraductal water of discharge water, still offer the outlet flue that advances flue gas in mouth and the heat exchanging chamber that is used for discharging that is used for to carrying the flue gas in the heat exchanging chamber on heat exchanging chamber's the lateral wall. The technical scheme of the utility model have the energy saving and prevent the contaminated advantage of atmosphere.

Method for preparing magnesium cement with partial thermal decomposition of bischofite

The invention provides a method for preparing magnesium cement from magnesium chloride by partial pyrolysis. The method comprises the following steps: salt lake bischofite or salt lake brine is put in pyrolysis equipment, the decomposition temperature is between 450 and 750 DEG C, the decomposition time is between 5 and 90 minutes; the bischofite is subjected to the partial pyrolysis to obtain solid products containing magnesia and the magnesium chloride; and the solid products are mixed with water to be pasty so as to obtain the chlorine oxygen magnesium cement, and the mol ratio of MgO to MgCl2 of which is between 4 to 1 and 6 to 1. Compared with the prior process for preparing the magnesium cement, in the method of the invention, the light calcinated magnesia does not need to be stirred with a magnesium chloride solution to form the magnesium cement, but the bischofite or the brine directly undergoes the pryolysis and then is mixed with water to form the magnesium cement, therefore the ...

Method for predicting service life of electric leakage signal conditioning circuit

The invention discloses a method for predicting the service life of an electric leakage signal conditioning circuit, and the method comprises the steps: taking the electric leakage signal conditioning circuit as a research object, obtaining a key component influencing the overall output performance of the circuit through sensitivity analysis, analyzing the influence of the tolerance of the component on the performance of the electric leakage signal conditioning circuit through a Monte-Carlo method, and carrying out the prediction of the service life of the electric leakage signal conditioning circuit; a conclusion that the smaller the component tolerance is, the higher the precision is and the higher the circuit operation reliability is obtained; and secondly, establishing a performance degradation model of the electric leakage signal conditioning circuit based on a Wiener process, and extrapolating the predicted life under accelerated stress to the predicted life under normal stress by ...

Photoelectric type hoist is prevented askew drawing and is hung safety device to one side

The utility model discloses a photoelectric type hoist is prevented askew drawing and is hung safety device to one side, including the slide bar that photoelectric switch, guide bar, dead lever and level set up, the slide bar middle part is equipped with the slot hole along the length direction of slide bar, and the bottom sliding connection of guide bar is in in the slot hole, the one end of slide bar is equipped with the blanking disk of slide opening, the other end fixedly connected with level setting of slide bar, the middle part of blanking disk is equipped with the light trap, photoelectric switch is including transmitting terminal and receiving terminal, the dead lever is connected with horizontal pole and sheer pole, and the free end level that goes up the horizontal pole extends light trap center department directly over, and the free end level of sheer pole extends light trap center department under, go up the downward fixedly connected with of free end of horizontal pole photoelectric ...

Vacuum safety dead weight device

The utility model discloses a vacuum safety dead weight device, including groove flange and the apron of cover on the groove flange, be provided with the annular groove on the groove flange, be provided with the sealing washer between groove flange and the apron, the sealing washer sets up in the annular groove. The technical scheme of the utility model with sealing washer replacement rupture disk commonly used, the cost has been practiced thrift.

Power transmission line grounding wire horizontal installation device

The invention belongs to the field of power transmission line repair and installation grounding wire operating tools, and particularly relates to a power transmission line grounding wire horizontal installation device. The device comprises a supporting body, a telescopic horizontal rod is installed on the top of the supporting body, a fixing sleeve is arranged at the end of the telescopic horizontal rod and connected with a grounding wire installation jig through a connector, a steel wire rope is arranged corresponding to the grounding wire installation jig, the two ends of the steel wire rope are fastened to the inner sides of the tops of wire clamps respectively, and an annealed copper wire is fixed to the outer side of the wire clamp on one side. An original method that a grounding wire is installed in an artificial wire lead-out method is changed into a method that the grounding wire is installed on a power transmission line tower cross beam remotely and horizontally so that personal ...

Liquefied air preparation system and preparation method

The invention relates to the technical field of industrial gas, in particular to a liquefied air preparation system and method.The liquefied air preparation system comprises a filter, a compressor, a purifier and a liquefying device.The filter is provided with a first inlet and a first outlet, and the first inlet is suitable for being communicated with the outside to suck air; the compressor is provided with a first inlet and a second outlet, the second inlet is connected with the first outlet through a first pipeline, the second outlet is suitable for outputting compressed air, the purifier is provided with a third inlet and a third outlet, the third inlet is connected with the second outlet through a second pipeline, and the third inlet is connected with the third outlet through a second pipeline. The liquefaction device is provided with a fourth inlet and a fourth outlet, the fourth inlet and the third outlet are connected through a third pipeline, the fourth outlet is suitable for outputting ...

Dolomite magnesia cement garden landscape craft product and preparation method thereof

The invention relates to a preparation method of a garden landscape craft product, in particular to a dolomite magnesia cement garden landscape craft product and a preparation method thereof. The preparation method comprises the following steps of: brushing silica gel feed liquor on a copy object; reinforcing the outside of a cured silica gel layer by using a layer of setting material to manufacture a silica gel mold; putting caustic dolomite powder, magnesium chloride, a light filler, an inert filler, an inorganic pigment and water in a mass ratio of 1.00:(0.12-0.40):(0.10-0.60):(0.05-0.30):(0.01-0.05):(0.44-1.20) into a stirrer to form dolomite magnesia cement slurry; and coating the slurry on the silica gel mold, curing for 18 to 24 hours, maintaining at the temperature of between 10 and 40 DEG C and the relative air humidity of less than 80 percent for 3 to 5 days, cutting, trimming, and maintaining for 10 to 20 days to obtain a finished product. The product and the method can be widely ...

Resistance -type hoist is prevented askew drawing and is hung safety device to one side

The utility model discloses a resistance -type hoist is prevented askew drawing and is hung safety device to one side, including the slide bar that guide bar, dead lever and level set up, the slide bar middle part is equipped with the slot hole along the length direction of slide bar, and the bottom sliding connection of guide bar is in in the slot hole, the one end of slide bar is equipped with the other end fixed connection varistor dish of slide opening, slide bar, resistance inner disc center department is connected with connecting wire, extend the below of resistance inner disc after buckling in the bottom of dead lever, be equipped with big end down's toper portion after upwards buckling in the bottom of dead lever, the most advanced sliding contact that forms of toper portion, the varistor dish slides and supports on sliding contact, when lifting hook or other hoists were located normal sling position, the center of varistor dish contacted with sliding contact, the utility model ...

Liquid air preparation system and method based on low-temperature liquid mixing

The invention relates to the technical field of industrial gas, in particular to a liquid air preparation system and method.The preparation system comprises a mixing tank, a first tank system and a second tank system, the first tank system comprises a first tank body, a subcooler, a first pipeline and a bypass structure, and the second tank system comprises a second tank body and a second pipeline; the first tank body has a first conveying state of conveying liquid oxygen to one side of the inlet along the first pipeline under the driving of self-pressurization or external force pressurization, or has a bypass conveying state of conveying liquid oxygen to one side of the inlet along the bypass structure under the driving of self-pressurization or external force pressurization; and/or the second tank body has a second conveying state of conveying liquid nitrogen to one side of the inlet along the second pipeline under the driving of self-pressurization or external force pressurization, liquid ...

Method for evaluating distance measuring and angle measuring errors of radar based on satellite-based navigation sonde

The invention discloses a method for evaluating distance measuring and angle measuring errors of a radar based on a satellite-based navigation sonde. The method includes the steps that firstly, erecting, demarcating and geodetic coordinate and height measuring work of the radar to be tested and evaluated are finished, an observation tracer is selected according to the working attributes of the radar to be tested and evaluated, and the observation tracer comprises a primary radar selection reflection target, a secondary radar selection reflection target and the sonde matched with the secondary radar selection reflection target; secondly, a proper sounding balloon is selected and carries the satellite-based navigation sonde and the observation tracer at the same time to lift off; thirdly, in the lifting-off process of the sounding balloon carrying the satellite-based navigation sonde and the observation tracer, a satellite-based navigation sounding air testing system ground portion is respectively ...

Water removing method in dehydration tail-gas during preparing anhydrous magnesium chloride

The invention provides a method for removing water in dehydrated tail gas during the preparation process of anhydrous magnesium chloride. The method uses anhydrous magnesium chloride or anhydrous calcium chloride as an adsorbent; the dehydrated tail gas carries out contact adsorption reaction in a moisture absorption reaction bed, thus removing the water in the tail gas and leading the tail gas to be dry. The content of the water in the disposed tail gas is 1-2 percent, which can meet the dehydration requirement of the anhydrous magnesium chloride. The disposed tail gas can be also used as the gas in the dehydration process of the anhydrous magnesium chloride; and the adsorbent after absorbing water can be regenerated and repeatedly used by being heated, thus reducing the cost. The method is simple and feasible, and has safe operation and strong practicability.

Combustor muffler

The utility model discloses a combustor muffler, including the amortization cover, the amortization cover is used for coveing the part that exposes of combustor, the amortization is covered to offer and is used for passing the conveying pipe of combustor and/or the recess of induction -pipe. The technical scheme of the utility model it is declined to a great extent to enable the noise.

Preparation method for inorganic phase-change microcapsule and inorganic phase-change microcapsule

The invention discloses an inorganic phase-change microcapsule with secondary inorganic wall material coverage and a preparation method of the inorganic phase-change microcapsule. The preparation method comprises the steps of (1) dissolving a polymer wall material through a solvent to obtain a polymer wall material solution, dissolving or melting an inorganic phase change material to obtain a core material solution, mixing the core material solution and the polymer wall material solution, adding an emulsifier, performing emulsion to obtain emulsified liquid, adding the emulsified liquid into water, and removing the solvent and the water to obtain a preliminarily covered core material; and (2) dissolving silicate ester to obtain a silicate ester solution, adding the preliminarily covered core material into the silicate ester solution, adjusting the pH to be in an alkaline state, performing reaction, and treating a reaction product to obtain the inorganic phase-change microcapsule secondarily ...

Automatic fire detection alarm instrument

The invention discloses an automatic fire detection alarm apparatus which structurally comprises a shell, a sound production cylinder, a mounting seat, a top cover and a smoke detection assembly, the shell is connected to the mounting seat and the sound production cylinder, and the sound production cylinder and the smoke detection assembly are matched in an electrical connection mode and connected with the top cover; the elastic pressing devices are arranged on the power assisting body, the two rows of the breathable folded plates are arranged through the elastic pressing devices, and when rotating on the edge of the mesh enclosure, the rotating balls will roll on the inner sides of the breathable folded plates and the inner sides of the ferrules, the breathable folded plates can be driven to be folded towards the inner sides of the ferrules with the connecting shafts as fulcrums, and the breathable folded plates are folded on the mesh enclosure and abut against each other in the same row ...

Building ceramic wet material drying process

The invention relates to a building ceramic wet material drying process, and belongs to the technical field of waste heat recycling methods in building material processing processes. A high-temperature smoke heat utilization unit, a drying tower used for drying wet building ceramic materials, and a low-quality heat recycling unit used for recycling low-quality heat of low-temperature steam heat from water gas generation furnaces or other steam generation devices are included in the building ceramic wet material drying process, the smoke temperature is lowered to the temperature level required for the wet material drying process under the condition that cold air does not need to be doped or mixed, and meanwhile by means of the generated high-temperature and high-pressure steam, the ladder-form utilization of energy is achieved, other waste heat and low-temperature heat in the production process is recycled and used in a unified mode, and energy waste is avoided.

Time schedule control's multichannel fluid sampling system

The utility model discloses a time schedule control's multichannel fluid sampling system. It includes that the front end advances appearance a manual needle valve, front end and advances the sample gas and move needle valve, sample save subassembly, manometer, sampling pipeline, sweep that the needle valve is moved to the implication, the manual needle valve of needle valve, buffer tank and tube coupling, buffer tank, manual needle valve, dry pump are moved to the vacuum implication, be equipped with multichannel sampling pipeline, manual needle valve on the buffer tank, every way sampling pipe is connected with introduction port needle valve, the pneumatic needle valve of introduction port, a plurality of sample on the road in order and preserves the subassembly, the manometer, sweeps the implication and moves needle valve, pneumatic needle valve, needle valve, and manual needle valve links to each other with dry pump, every sample preserve subassembly including the VCR who links to each ...

Method for preparing anhydrous magnesium chloride

The invention provides a method for preparing anhydrous magnesium chloride. The method comprises steps of dehydrating bischofite so as to form magnesium chloride tetrahydrate, then dehydrating magnesium chloride tetrahydrate so as to obtain magnesium chloride dihydrate, fusing magnesium chloride dihydrate so as to obtain melt, keeping the melt warm and clarifying the melt so as to obtain supernatant liquid, and cooling the supernatant liquid so as to obtain anhydrous magnesium chloride. The method is simple, has low requirements on equipment, and is easy for industrial production.

Movable boiler burner device

The utility model discloses a movable boiler burner device for connect boiler and combustor, movable boiler burner device installs the burner at the boiler, and the combustor is installed in the movable boiler burner device, it includes a drum, interior shell ring, insulating layer, flame retardant coating and the bushing of outwards being is respectively in proper order followed to the drum. The technical scheme of the utility model the advantage that has the wasting of resources avoided.

Dolomite magnesium cement concrete and preparation method thereof

The invention discloses dolomite magnesium cement concrete and a preparation method thereof, belonging to the field of chemical industry buildings. The dolomite magnesium cement concrete is composed of the components of caustic dolomite powder, magnesium chloride, sand, stone, inert filler and water in the mass ratio of 1.00:(0.12-0.29):(0-3.0):(0-6.0):(0.10-0.3):(0.44-0.87). The manufacture method comprises the following steps of stirring slurry, shaping, solidifying and curing. In the manufacture method, caustic dolomite powder with better activity is adopted to prepare the dolomite magnesium cement concrete, and dolomite ore resource is widely distributed and can be obtained conveniently, which lowers production cost of the dolomite magnesium cement concrete and expands the application range of the magnesium cement material. The dolomite magnesium cement concrete prepared by the manufacture method has the characteristics of high intensity, strong gelatinization performance, strong durability ...

Combination type closed water cycle loop solar heat-collector

The invention relates to a combined closed water circulation loop solar collector, wherein, vacuum collector pipes both ends of which are opened are closely arranged and various vacuum collector pipes are connected and combined with each other through pipe seal heads and connecting pipes, thereby the whole system forms a closed water circulation loop and water is naturally cycled in the circulation loop under the heating of solar energy. The combined closed water circulation loop solar collector utilizes a plurality of rows of vacuum collector pipes to replace a water tank, integrates the functions of heat absorption and heat storage of the vacuum collector pipes into a whole, reduces the volume of the collector and reduces the manufacturing cost. Due to the multi-row layout structure, the effective daylighting area on the unit daylighitng area of the collector reaches the maximum and the capacity for absorbing the solar energy is improved.

Chinese character encoding method grouping in consonants

Solid matter self-guiding intermittent exhausting and upper drainage water pipe anti-freezing solar water heater

By changing the siphonopore space of a vacuum pipe solar hot water heater water tank and the structures of an obturating ring and a dustproof ring, the invention realizes the close packing of the solar water heater vacuum pipe, improves the heat collecting efficiency of the solar water heater, saves the installation space and lowers the construction cost of the vacuum pipe solar water heater. The invention solves the problems that a water release pipe on the solar water heater in northern China is frozen and blocked and the water release is lost when a householder living on a lower floor of a tall building of apartment by adopting a novel water release pipe draining system. By adopting a cold-hot water fluid director inside the vacuum pipe, the invention realizes that naturally circulating ascending water is separated from the descending water inside the vacuum pipe, the hot water is sent to the upper part of a water tank, the cold water is introduced into the lower part of the vacuum pipe ...

Thermal insulation material

The invention discloses a thermal insulation material which comprises the following raw materials in parts by mass: 100 parts of a solid mixture and 100-150 parts of a magnesium chloride solution, wherein the solid mixture comprises the following components in percentage by mass: 10-90% of magnesium oxide powder, 5-89% of packing and 0.8-10% of a foaming agent; and the packing can be any one of fly ash, dolomite powder, calcium carbonate powder, gypsum powder, perlite, red mud, lake sludge, river sand and coal gangue. In the thermal insulation material, the foaming agent is prepared by mixing peroxides, a sizing agent and a foam stabilizer; when used in the preparation of the thermal insulation material, the foaming agent is high in foaming speed and uniform in foaming; and the thermal insulation material disclosed by the invention not only can effectively reduce the bearing of a building, but also has good thermal insulation properties; therefore, the thermal insulation material can be ...

Solid matter self-guiding intermittent exhausting and upper drainage water pipe anti-freezing solar water heater

By changing the siphonopore space of a vacuum pipe solar hot water heater water tank and the structures of an obturating ring and a dustproof ring, the invention realizes the close packing of the solar water heater vacuum pipe, improves the heat collecting efficiency of the solar water heater, saves the installation space and lowers the construction cost of the vacuum pipe solar water heater. Theinvention solves the problems that a water release pipe on the solar water heater in northern China is frozen and blocked and the water release is lost when a householder living on a lower floor of atall building of apartment by adopting a novel water release pipe draining system. By adopting a cold-hot water fluid director inside the vacuum pipe, the invention realizes that naturally circulating ascending water is separated from the descending water inside the vacuum pipe, the hot water is sent to the upper part of a water tank, the cold water is introduced into the lower part of the vacuumpipe ...

Preparation method of europium-doped yttrium borate thin film

The invention discloses a preparation method of a europium-doped yttrium borate thin film. The preparation method comprises the following steps: 1) mixing a water-soluble europium salt, a water-soluble yttrium salt, boric acid, water and an alcohols solvent, and mixing and dissolving the alcohols solvent with water; 2) adding a chelating agent and a cross-linking agent into the mixed system obtained in the step 1); 3) reacting the mixed system obtained in the step 2) for 3-5 hours, and leaving the mixed system subjected to reaction to stand for 24-48 hours; 4) performing film coating in a dipping and pulling manner: immersing a silicon substrate into a beaker with a solution according to a film coating speed of 0.3-0.5 cm/s, then performing standing for 5-10 seconds, and pulling the substrate according to the equal speed, so as to finish film coating; 5) after film coating of the silicon substrate, placing the coated silicon substrate into a muffle furnace, calcining the substrate at 400 ...

Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device

The invention discloses an optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device, comprising a 1550nm light source, a 1550nm optical circulator, an optical fiber Fabry-Perot ultrasonic sensor, a photoelectric transition module, a signal amplification module, an oscillograph, a piezoelectric transducer and a signal generator. The basic structure of the optical fiber Fabry-Perot ultrasonic sensor is composed of a single mode optical fiber, a quartz vibrating membrane, an outer ceramic bushing, an inner ceramic bushing and a metal base. The light emitted by the1550nm light source reaches the optical fiber Fabry-Perot ultrasonic sensor through the optical circulator, when ultrasonic wave acts on the ultrasonic sensor, as the light reflected by the optical fiber Fabry-Perot ultrasonic sensor is modulated by the ultrasonic signal, the reflected light reaches the photoelectric conversion module by the circulator and then is converted into an electric signal, ...

Condensation energy -saving appliance

The utility model discloses a condensation energy -saving appliance, condensation energy -saving appliance is including the heat exchanging chamber and the at least flue gas pipeline of setting in heat exchanging chamber that are used for holding water, condensation energy -saving appliance still includes into mouth and outlet flue, advance mouth and gas gas heater's flue gas pipeline's one end through connections, flue gas pipeline's the other end and outlet flue through connections. The technical scheme of the utility model the waste heat that utilizes the stove cigarette heats water, carries out condensation, not only energy saving but also environmental protection with the stove cigarette simultaneously.

High-efficiency catalyst for residual oil hydrogenation and preparation method thereof

The invention relates to the technical field of residual oil hydrogenation catalysts, and particularly discloses a preparation method of a high-efficiency catalyst for residual oil hydrogenation, which comprises the following steps: S01, preparing a modified alumina carrier: mixing 1-1.2 parts by weight of pseudo-boehmite, 0.1-0.15 part by weight of a pore-enlarging agent, 0.85-0.15 part by weight of modified silicon carbide and 0.45-0.9 part by weight of a molding aid, kneading and mixing, extruding and molding to obtain the modified alumina carrier; drying at 120 DEG C for 4-5 hours, and roasting at 600-800 DEG C for 3-5 hours to obtain a modified alumina carrier; s02, impregnating the modified alumina carrier prepared in the step S01 with a metal active component, drying at 140-150 DEG C for 5-6 hours, and roasting at 400-500 DEG C for 3-4 hours to obtain the catalyst, the pore-enlarging agent polyacrylamide and the modified silicon carbide are cooperatively used, so that the number ...

Method for controlling thickness of europium-doped yttrium borate thin film

The invention discloses a method for controlling thickness of a europium-doped yttrium borate thin film. The method comprises the following steps: 1) mixing water-soluble yttrium salt, europium oxide, ammonia water, alcohol and water; 2) adding a boron source into a mixture obtained in the step 1), wherein the boron source is boric acid or boric acid ester; 3) performing reaction on the mixture obtained in the step 2) for 24-48 hours; 4) performing film coating on a silicon substrate by using a dip-coating technique at the speed of 0.88-1.52 mm/s, calcining into a muffle furnace at the temperature of 200-600 DEG C after film coating, and repeatedly carrying out the process for 1-6 times; 5) putting the film at the temperature of less than 1,000 DEG C for annealing after the film reaches the predetermined thickness, namely 10-100 nm, so as to obtain a YBO3:Eu <3+> film. The method has the advantage that theYBO3:Eu <3+> nanometer material prepared by using the sol-gel dip-coating technique ...

Chinese character encoding method with digits

The present invention discloses a digital Chinese character encoding method with very rules to be memorized.

Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device

The invention discloses an optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device, comprising a 1550nm light source, a 1550nm optical circulator, an optical fiber Fabry-Perot ultrasonic sensor, a photoelectric transition module, a signal amplification module, an oscillograph, a piezoelectric transducer and a signal generator. The basic structure of the optical fiber Fabry-Perot ultrasonic sensor is composed of a single mode optical fiber, a quartz vibrating membrane, an outer ceramic bushing, an inner ceramic bushing and a metal base. The light emitted by the 1550nm light source reaches the optical fiber Fabry-Perot ultrasonic sensor through the optical circulator, when ultrasonic wave acts on the ultrasonic sensor, as the light reflected by the optical fiber Fabry-Perot ultrasonic sensor is modulated by the ultrasonic signal, the reflected light reaches the photoelectric conversion module by the circulator and then is converted into an electric signal, ...

Method for electrolytically preparing magnesium-rare earth by using hydrated magnesium chloride and rare earth chloride

The invention relates to a method for electrolytically preparing magnesium-rare earth by using hydrated magnesium chloride and rare earth chloride, which is characterized by taking MgCl2.2H2O and CeCl3.3H2O or MgCl2.2H2O and NdCl3.3H2O as raw materials, taking a system of MgCl2-NaCl-KCl-CeCl3 or a system of MgCl2-NaCl-KCl-NdCl3 as an electrolyte, taking a molybdenum rod as a subsidence cathode and black lead as an anode, carrying out DC electrolyte under the condition with the voltage of 4.0-8.0V and the temperature of 680 -800 DEG C, and obtaining magnesium-rare earth. The invention uses incomplete dehydrated hydrated magnesium chloride and incomplete dehydrated rare earth chloride as the raw materials to carry out the electrolyte, and avoids the process of removing the constituent water of crystal in the traditional method, so that the processes can be simplified, and simultaneously, the cost of the raw materials and production can be reduced.

Digital coding method for simultaneously displaying Chinese character and radicals

In the said Chinese character coding method, digital 1,2,3,4 and 5 are used to express stroke horizontal, vertical, right slant, point and left slant and turning of Chinese characters, and each Chinese character is coded based on the stroke order of the Chinese character and its radical. The characters with the same code are displayed in the front part of the optional window and the radical in the back part. The required Chinese character is then selected from the group of Chinese characters displayed in the window.

Method for preparing magnesium-zinc intermediate alloy through molten salt electrolysis

The invention discloses a method for preparing a magnesium-zinc intermediate alloy through molten salt electrolysis. The method comprises the steps of taking liquid zinc or liquid magnesium-zinc alloy as a negative electrode and graphite as a positive electrode, wherein an electrolyte system contains magnesium chloride and lithium chloride, further contains chloride of non-lithium alkali metal or chloride of non-magnesium alkaline-earth metal, and the magnesium chloride accounts for 10-30% by mass in the electrolyte system; switching on power to electrolyze, keeping electrolysis temperature at 580-680 DEG C and electrolysis cell pressure under 3.5-5.5V, adding magnesium chloride to the electrolysis system as an electrolysis raw material along with electrolysis reaction, so that content of the magnesium chloride in the electrolyte system is kept within a range of 10-30% by mass, thus obtaining a magnesium-zinc alloy in an electrolysis cell.

Chinese character encoding method grouping in consonants

The present invention discloses a method for coding Chinese characters by using digital codes to combines the pronunciation of the Chinese cahracters, radicals and writing strokes together.

Magnesium cement foam material

The invention relates to a magnesium cement foam material which is prepared by the following steps: mixing 10-90 wt% of light-burnt magnesium oxide powder, 5-89 wt% of filler and 0.8-10% of compound foaming agent, and mixing with a magnesium chloride solution which accounts for 100-150 wt% of the mixture; and evenly stirring, casting and forming to obtain the magnesium cement foam material. The invention can effectively lower the load of the buildings, has favorable thermal insulation property, and can be widely used for building blocks, heat engineering equipment, and various ventilating ducts and industrial ducts in industrial and civil buildings.

Canned type boiler uptake door

The utility model discloses a canned type boiler uptake door, including the smoke box door, include smoke box door plant, refractory slab and clamp plate in the smoke box door follow extroversion in proper order, the smoke box door plant is compressed tightly on the smoke box panel through closing device, be provided with sealed raised circle on the smoke box panel, the smoke box door plant on be provided with the first sealing washer relative with sealed raised circle. The technical scheme of the utility model effectively reach sealed effect.

Water vapour separator

The utility model discloses a water vapour separator, it includes that a top is equipped with the open -ended box body, the bleeder vent has been seted up to the box body bottom. The technical scheme of the utility model moisture in the steam has effectively been got rid of.

Method for preparing high-purity magnesium oxide by pyrolysis of magnesium chloride

The invention relates to a method for preparing high-purity magnesium oxide by pyrolysis of magnesium chloride. The method comprises the following steps of: (1) dissolving salt lake bischofite or old brine, and then removing B2O3 and SO2<-4>, so as to obtain a magnesium chloride solution with the mass concentration of 29-32%; (2) preconcentrating the magnesium chloride solution, spraying the preconcentrated magnesium chloride solution into a pyrolysis reactor by virtue of a nozzle, decomposing under the conditions that the decomposition temperature is 500-650 DEG C, the pressure is -80 to -20Pa and the decomposition time is 1-5 seconds to obtain themolysis products of magnesium oxide and themolysis tail gas; and (3) sintering the pyrolysis product magnesium oxide sequentially subjected to hydration purifying, washing and filtering to obtain high-purity magnesium oxide with the MgO content of more than 99.0%. The invention has the advantages of simple process, low cost, high raw material ...

Dolomite magnesium cement composite ventilating duct and manufacturing method thereof

The invention relates to a dolomite magnesium cement composite ventilating duct and a manufacturing method thereof. The manufacturing method comprises the following steps: taking out 1.00 part by mass of caustic dolomite powder, 0.12-0.40 part by mass of magnesium chloride, 0.10-0.60 part by mass of light filler, 0.05-0.30 part by mass of inert filler, 0.44-1.20 parts by mass of water and 0.05-0.15 part by mass of heat insulating material; dissolving the magnesium chloride in water to form a magnesium chloride solution, and mixing the solution with the caustic dolomite powder, light filler, inert filler and heat insulating material to form a slurry; injecting the slurry into a mold, laying a proper amount of reinforcing material, curing for 18-24 hours, and demolding; and after demolding, curing at 10-40 DEG C under the relative humidity of air of lower than 80% for 20-28 days. The ventilating duct has the advantages of fire resistance, heat insulation, high strength, favorable durability ...

Ceramic tile

The utility model relates to a chamfering ceramic tile, mainly comprising a ceramic tile body and a convex edge which is arranged on one side of the ceramic tile body. The chamfering ceramic tile solves the defects that the existing ceramic tiles need to be cut by hand and are easy to be damaged when the existing ceramic tiles are stuck on the inner corners and the outer corners of walls. The utility model has the advantages of reasonable structure and convenient installation.

Method for separating magnesium and lithium from old brine of salt lake

The invention provides a method for separating magnesium and lithium from an old brine of a salt lake. The old brine of the salt lake is firstly subjected to pyrolysis to obtain incomplete-pyrolysis magnesium chloride, the incomplete-pyrolysis magnesium chloride is stirred uniformly with water to prepare a magnesium cement product, the magnesium cement product is soaked in water to obtain a lithium-containing solution, and the lithium-containing solution is concentrated and then precipitated with sodium carbonate to obtain lithium carbonate. The old brine of the salt lake is dehydrated and decomposed into magnesium oxide and hydrogen chloride at 400-800 DEG C, the lithium chloride is not composed under the condition, therefore, the lithium salt is easily dissolved in water and enters the solution, but magnesium oxide and magnesium chloride not decomposed are all put into the magnesium cement, the purpose of comprehensively utilizing the magnesium and lithium separated from the old brine ...

Local discharging on-line detecting and positioning system for electric transformer

The invention relates to a local discharging on-line detecting and positioning system for an electric transformer, which comprises an ARM processor. The ARM processor is connected with a multi-way signal detecting channel, a LCD (Liquid Crystal Display) screen, a keyboard, a SD (Secure Digital) card seat and a serial port. The multi-way signal detecting channel is formed by an optical fiber ultrasonic sensor sequentially connected with an photoelectric diode, an I/V converter, an amplifier, a filter and a threshold judger. The optical fiber ultrasonic sensor in the multi-way signal detecting channel detects an acoustic transmission signal generated during local discharging, and the acoustic transmission signal is output by the threshold judger after photoelectric conversion, I/V conversion, amplification and filtration. The ARM processor is used for analyzing and processing the multi-way detecting signal, displaying the position of the discharging source on the LCD screen, storing data ...

Light dolomite magnesium cement block, baking and steaming-free brick and manufacture method thereof

The invention discloses a light dolomite magnesium cement block, a baking and steaming-free brick and a manufacture method thereof, belonging to the field of chemical engineering buildings. The light dolomite magnesium cement block and the baking and the steaming-free brick are composed of the following components of caustic dolomite powder, magnesium chloride, a light filler, an inert filler, water and a heat insulating material with the mass ratio of 1.00: (0.25-0.40): (0.50-1.0): (0.05-0.30): (0.60-1.20): (0.10-0.50). The manufacture method comprises the following steps of stirring slurry, shaping and curing. The caustic dolomite powder with good activity is adopted to manufacture the block and the baking and steaming-free brick, which can expand the application range of the magnesium cement materials and has an important meaning for developing economy for each region and saving a great quantity of woods for our country. The light block and the baking and steaming-free brick produced ...

Method for producing caustic dolomite used as raw material of magnesia cement from dolomite ore

The invention relates to a method for producing caustic dolomite used as a raw material of magnesia cement from dolomite ore, belonging to the field of inorganic chemical building materials. The method is characterized by comprising the steps of dolomite ore crushing -> carbon dioxide positive pressure roasting -> cooling -> grinding -> packaging. The caustic dolomite produced by the production method has high activity and completely meets the requirements for being used as a raw material to prepare magnesia cement, and the prepared magnesia cement has great strength; measurements on the magnesia cement prepared from the caustic dolomite together with magnesium chloride show that MgO is not less than 18%, CaO is not more than 2.0%, initial setting time is not less than 40 min, final setting time is not more than 7 h, stability is qualified, and the compression strength of pure slurry is not less than 40 MPa. In the invention, dolomite resources are fully utilized as the raw material of ...

Fluid distributing system and multiphase separator thereof

The invention provides a fluid distributing system and a multiphase separator thereof. The multiphase separator comprises a shell, an inlet, a back taper, a multilayer tower taper and fluid discharging holes, wherein the shell is of a columnar cavity structure, a gas outlet is formed in a center region of the top of the shell, a liquid outlet is formed in a center region of the bottom of the shell; the inlet is formed in the middle of the shell, a vortex-shaped runner is arranged on the inner wall of the inlet; the back taper is of a tube structure which is shaped as a circular truncated cone, the upper end of the back taper is connected with the gas outlet, the lower end of the back taper is higher than the inlet; the multilayer tower taper is of a columnar cavity structure, and is arranged above the liquid outlet and communicated with a liquid outlet, the multilayer tower taper is of a multilayer circular truncated cone-shaped structure the top of the outer side surface of which is cone-shaped ...

Method for preparing magnesium-rare earth alloy by fused salt electrolysis process

The invention discloses a method for preparing magnesium-rare earth alloy by a fused salt electrolysis process. The method comprises the following steps: taking hydrated magnesium chloride and hydrated rare earth chloride as raw materials for electrolysis, taking potassium chloride as electrolyte, taking molybdenum rod as a cathode or taking liquid rare earth metal or liquid magnesium rare earth alloy as a subsidence cathode, taking graphite crucible as an anode, and performing direct current electrolysis at current of 1,000-2,000A, voltage of 5-15V and temperature of 800-1,000 DEG C to obtain magnesium-rare earth alloy liquid at the cathode. The obtained magnesium-rare earth alloy contains 5-95 wt% of rare earth. The method is characterized by taking the hydrated magnesium chloride and the hydrated rare earth chloride as raw materials for electrolysis, which can obviously reduce preparation cost of the raw materials for electrolysis; specially adding the rare earth chloride in liquid state ...

SRM torque ripple optimization control method based on quasi sine wave current excitation

The invention relates to an SRM torque ripple optimization control method based on quasi sine wave current excitation. The method comprises the following steps: firstly, acquiring a rotor position electrical angle and a three-phase current actual value; the actual rotating speed of the motor is calculated according to the rotor position electrical angle, the rotating speed deviation between the actual rotating speed and the given rotating speed is calculated, PI control is conducted on the rotating speed deviation, and a fundamental frequency virtual current q-axis component reference value is obtained; calculating a three-phase virtual current reference value according to the rotor position electrical angle and the fundamental frequency virtual current vector reference value; then, obtaining the inductance of each phase of the switched reluctance motor through simulation, and carrying out Fourier decomposition on the inductance of each phase; selecting a second-order virtual current vector ...

Digital coding method for simultaneously displaying Chinese character and radicals

Preparation method of Mg-RE-Ni alloy hydrogen storage material

The invention relates to a preparation method of Mg-RE-Ni alloy hydrogen storage material, comprising the following steps: (1) mixing Mg powder, RE powder and Ni powder in percentage by molar of 60-89:1-10:10-30, and evenly grinding powder in the atmosphere of argon protection to obtain mixture; (2) tabletting the mixture under the argon protection, and sealing by graphite powder; (3) putting a sealed die in a tube furnace or a muffle furnace under argon or air atmosphere for sintering powder, and obtaining sintered alloy; (4) polishing the surface of the sintered alloy, and obtaining alloy powder by smashing and grinding; and (5) carrying out intermittent ball milling on the alloy powder under the argon protection to obtain nanocrystalline/amorphous magnesium base composite hydrogen storage material. The invention combines a powder sintering method with a mechanical ball milling method, which simplifies technology, leads operation to be easier, lowers equipment cost and ensures that the ...

Preparation method of Mg-RE-Ni alloy hydrogen storage material

The invention relates to a preparation method of Mg-RE-Ni alloy hydrogen storage material, comprising the following steps: (1) mixing Mg powder, RE powder and Ni powder in percentage by molar of 60-89:1-10:10-30, and evenly grinding powder in the atmosphere of argon protection to obtain mixture; (2) tabletting the mixture under the argon protection, and sealing by graphite powder; (3) putting a sealed die in a tube furnace or a muffle furnace under argon or air atmosphere for sintering powder, and obtaining sintered alloy; (4) polishing the surface of the sintered alloy, and obtaining alloy powder by smashing and grinding; and (5) carrying out intermittent ball milling on the alloy powder under the argon protection to obtain nanocrystalline/amorphous magnesium base composite hydrogen storage material. The invention combines a powder sintering method with a mechanical ball milling method, which simplifies technology, leads operation to be easier, lowers equipment cost and ensures that the ...