Vertical variable magnetic field device

The invention relates to a vertical variable magnetic field device which is applied to a low-temperature probe station system. The device comprises a top permanent magnet, a bottom permanent magnet, a sample holder and a plurality of support screws; one end of each support screw is fixed on the sample holder; the top permanent magnet is arranged on each support screw; and the bottom permanent magnet is arranged on the sample holder. The device of the invention changes the surface magnetic line density through precisely adjusting the altitude of the top permanent magnet under the condition that the interior of a TTP4 low-temperature probe station system housing in the company of Lakeshore maintains the original high vacuum, thereby achieving the effect of changing a magnetic field. The invention has the advantages of simple and feasible scheme, low cost, stability, reliability, large change range of the magnetic field, and best compatibility with the system. Furthermore, the invention ...

Fire coal sampling and conveying device

The invention belongs to the technical field of transportation devices, and particularly relates to a fire coal sampling and conveying device which comprises a transportation component and a guide component, the transportation component is mainly a component used for transporting fire coal and comprises a specially-made rotating belt, and the two sides of the inner wall of the specially-made rotating belt are both connected with inserting rotating wheels in a rolling mode. A framework composed of an inserted rotating wheel, a built-in connecting rod, a middle-position strip and edge warping equipment is arranged in the special rotating belt, so that the bearing capacity of the special rotating belt is high, the special rotating belt is not prone to collapse due to the pressure of coal, and the edge warping equipment on the two sides can knock and shake the two sides of the inner wall of the special rotating belt; the coal on the upper surface of the specially-made rotating belt is guided ...

Manufacture method of non-volatile memory

The invention relates to a method for preparing a non-volatilisation memory, comprising the following steps: a gate oxide layer is formed on a semiconductor substrate; the mixture of silicon powder and hafnium oxide powder are evaporated to the gate oxide layer by adopting the way of electron beam evaporation, and then is treated by thermal annealing at high temperature to form a nanocrystalline floating gate layer; a gate electrode is formed on the nanocrystalline floating gate layer; an active region and a drain region are intermingled, and the forming working procedures of an active electrode and a leakage electrode are carried out. The preparation method of the three-terminal enhanced type MOS nanocrystalline floating gate non-volatilisation memory has simple technical process and low preparation cost, and is beneficial to large-scale integration.

Solar cell, antireflection structure thereof and forming method

The invention discloses a method for forming an antireflection structure of a solar cell. The method comprises the following steps: firstly depositing a metal thin film on the surface of a silicon chip of the solar cell; then performing fast thermal annealing treatment on the silicon chip deposited with the metal thin film, and annealing the metal thin film for forming nano-catalytic particles; then performing chemical corrosion on the silicon chip after the thermal annealing by utilizing the wet process so as to form the nano-antireflection structure of the solar cell; and finally cleaning the silicon chip with the nano-antireflection structure so as to remove residual metal. The invention can form the antireflection structure of the solar cell with the nano-ultralow antireflection effect. The invention further discloses the antireflection structure of the solar cell and the solar cell with the structure.

Method for producing non-volatility memory

The invention relates to a method for preparing a non-volatilisation memory, comprising the following steps: a gate oxide layer is formed on a semiconductor substrate; the mixture of silicon powder and hafnium oxide powder are evaporated to the gate oxide layer by adopting the way of electron beam evaporation, and then is treated by thermal annealing at high temperature to form a nanocrystalline floating gate layer; a gate electrode is formed on the nanocrystalline floating gate layer; an active region and a drain region are intermingled, and the forming working procedures of an active electrode and a leakage electrode are carried out. The preparation method of the three-terminal enhanced type MOS nanocrystalline floating gate non-volatilisation memory has simple technical process and low preparation cost, and is beneficial to large-scale integration.

Method for testing gas concentration by utilizing acoustic surface wave device

The invention discloses a method for testing gas concentration by utilizing an acoustic surface wave device, which quantificationally obtains the concentration of tested gas by utilizing that the propagation velocity of acoustic surface waves on an acoustic surface wave gas sensor is different before and after the surface acoustic wave gas sensor adsorbs the tested gas. The method mainly comprises the steps of: using a signal generator to transmit a short pulse signal on one side of the acoustic surface wave gas sensor at both ends; using different channels of an oscilloscope to synchronouslydetect both ends of the acoustic surface wave gas sensor; and then performing calibration according to the relation between a detection result and the concentration of the tested gas. The method can conveniently test various acoustic surface wave gas sensors. The method has the advantages of less equipment, simplicity, steadiness, reliability, wide application, and small error.

Vertical variable magnetic field device

The invention relates to a vertical variable magnetic field device which is applied to a low-temperature probe station system. The device comprises a top permanent magnet, a bottom permanent magnet, a sample holder and a plurality of support screws; one end of each support screw is fixed on the sample holder; the top permanent magnet is arranged on each support screw; and the bottom permanent magnet is arranged on the sample holder. The device of the invention changes the surface magnetic line density through precisely adjusting the altitude of the top permanent magnet under the condition that the interior of a TTP4 low-temperature probe station system housing in the company of Lakeshore maintains the original high vacuum, thereby achieving the effect of changing a magnetic field. The invention has the advantages of simple and feasible scheme, low cost, stability, reliability, large change range of the magnetic field, and best compatibility with the system. Furthermore, the invention ...

Thermal radiation resistant aluminum foil screen of cold probe platform and manufacturing method thereof

The invention discloses a thermal radiation resistant aluminum foil screen for a cold probe station, which belongs to the field of thermal radiation resistance. The thermal radiation resistant aluminum foil screen for the cold probe station comprises a fixed collar and at least two aluminum foil strips; the diameter of the fixed collar is matched with the inner diameter of a vacuum cavity in the cold probe station; and the aluminum foil strips are evenly fixed on the fixed collar. The thermal radiation resistant aluminum foil screen can effectively prevent the disturbance of outside thermal radiation to a low temperature environment. The thermal radiation resistant aluminum foil screen for the cold probe station can effectively reduce the temperature from 5 Kelvins to 4.5 Kelvins. Because the thermal radiation is effectively reflected, the consumption of liquid nitrogen and liquid helium is reduced, and the experimental cost is saved. The invention also discloses a method for preparing ...

Unmanned aerial vehicle-based X-ray nondestructive power transmission line detection method

The invention discloses an X-ray nondestructive power transmission line detection method based on an unmanned aerial vehicle, and belongs to the field of line detection. According to the overall design of the shape of the unmanned aerial vehicle according to the mounting bracket, the number and the type of rotor wings are selected, a round hole of about 200-300 mm is designed in the center of a selected traditional large four-rotor-wing or six-rotor-wing unmanned aerial vehicle, the round hole needs to penetrate through the upper part and the lower part of the whole unmanned aerial vehicle, and the mounting position of a camera is determined. Performing technical demonstration on the specified preliminary scheme, and determining a detection path and method; according to the specified technical scheme, whether the overall balance of the unmanned aerial vehicle meets the flight safety and the influence on a flight control system or not after a ray machine and a digital imaging plate are additionally ...

Acoustic surface wave gas sensor and manufacturing method thereof

The invention discloses an acoustic surface wave gas sensor which comprises a piezoelectric crystal substrate, a first interdigital electrode, a second interdigital electrode, a third interdigital electrode and sensitive films, wherein the first interdigital electrode, the second interdigital electrode and the third interdigital electrode are arranged on the surface of the piezoelectric crystal substrate in parallel and at intervals; and the sensitive films capable of absorbing gas to be measured are separately evaporated or coated on the substrate surfaces between the first interdigital electrode and the second interdigital electrode, and between the second interdigital electrode and the third interdigital electrode. The invention also discloses a method for manufacturing the acoustic surface wave gas sensor. The acoustic surface sensor can be used for measuring different gases after matched with different sensitive films, and has the advantages of high sensitivity, simple structure, convenient ...

Application program vulnerability detection device and method

The invention discloses a device and a method for detecting application program vulnerabilities. The device comprises an interprocess control flow graph construction module, a forward solver, an optimization module, a backward solver and a flow sensitive path generator. According to the device, an activation point is ignored in the propagation process of the forward solver and the backward solver, so that the flow sensitivity is sacrificed, a large number of data flow values are prevented from being copied, the number of the data flow values is reduced, the flow sensitivity is recovered through a flow sensitive path generator, a flow sensitive stain propagation path is generated by using a deep search algorithm, and the flow sensitivity is improved. The performance and the expandability of the multi-solver IFDS algorithm are ensured, and then the vulnerability of the application program to be detected can be accurately detected.

Device for measuring starting torque drop value of electric power steering column reducing mechanism

The utility model relates to the technical field of electric power steering tubular columns, in particular to an electric power steering tubular column speed reducing mechanism starting torque drop value measuring device which comprises a rack driving motor, a torque and angle sensor, a torsion bar, an output shaft driving head and a speed reducing mechanism fixing clamp. A shaft of the rack driving motor is connected with one end of the torque and angle sensor, the other end of the torque and angle sensor is connected with one end of the torsion bar, the other end of the torsion bar is provided with the output shaft driving head, the output shaft driving head is connected with the center of the speed reducing mechanism, and the speed reducing mechanism is installed on the speed reducing mechanism fixing clamp. Compared with the prior art, the starting torque drop value measuring device for the speed reducing mechanism is designed, so that subsequent deep analysis of problems is facilitated ...

Preparation method of large-size magnesium fluoride moderator

The invention relates to a preparation method of a large-size magnesium fluoride moderator, belongs to the technical field of nuclear radiation shielding materials, and solves the problems of small preparation size, low purity and low density in the prior art. According to the method, high-purity magnesium fluoride powder is selected as a raw material, and the large-size and high-density magnesium fluoride moderator is finally obtained through presintering, hot isostatic pressing treatment and desheathing finish machining. The magnesium fluoride moderator prepared by the method is large in size and can meet the use requirements of BNCT equipment, and the compactness of the moderator can reach 98% or above, and the moderator is free of cracks and pores and has the advantages of uniform compactness, mechanical property and the like.

Cell segmentation method and system

The invention relates to a cell segmentation method and system, and belongs to the field of biomedical image processing, and the method comprises the steps: obtaining a cell image; dividing the cell images into two types; predicting the first type of cell images by using a first cell segmentation model to obtain a first probability graph of each pixel point belonging to a cell and a horizontal and vertical first distance graph of each pixel point to the centroid of a cell nucleus; calling a watershed algorithm to carry out post-processing on the first probability graph and the first distance graph to obtain a first type of cell image segmentation prediction; predicting a second type of cell images by using a second cell segmentation model to obtain a second probability graph of each pixel point belonging to the cell and a second distance graph of each pixel point to the edge of the cell in R directions; and calling a non-maximum suppression method to carry out post-processing on the second ...

Silicon nitride wet method corrosion method

The invention relates to a silicon nitride wet etching method, which includes the following steps: A. a silicon nitride layer is provided and a photoresist layer with a primary pattern forms on the silicon nitride layer by a photoetching method; B. metallic chromium is evaporated by using an electron beam evaporation method to form a metallic chromium layer; C. the photoresist layer is peeled off and a metallic chromium masking layer with secondary pattern forms on the silicon nitride layer; D. a third pattern forms by etching the silicon nitride layer using a wet method; and E. the metallic chromium masking layer is removed to obtain a graphic silicon nitride film. The invention solves the problem that the light resistance is oxidized in etching solution and can not play the roles of etching and masking during the process of etching silicon nitride by using the selectively wet method, and also solves the problem that the in-situ deposited silicon nitride film can not etch the given region ...

Preparation method and application of bis-tetraphenylethylene-based fluorescent probe

The invention discloses a preparation method and application of a bis-tetraphenylethylene-based fluorescent probe. The bis-tetraphenylethylene-based fluorescent probe can realize efficient detection of explosives through fluorescence quenching generated by photo-induced electron transfer (PET) between the bis-tetraphenylethylene-based fluorescent probe and nitro-aromatic hydrocarbon. The preparation method of the bis-tetraphenylethylene-based chemical sensor is simple, convenient, mild in condition and low in cost, the obtained fluorescent probe has good AIE characteristics, has good selectivity and sensitivity for trace explosive PA detection, can be prepared into simple fluorescent test paper to conduct visual trace detection on PA, and has good application prospects.

Method for manufacturing single-electron memory

The invention provides a method for manufacturing a single-electron memory, which relates to the technical field of nano-devices. In order to overcome the defect of complicated technical steps in the manufacturing technology of the prior single-electron memory, the invention aims at providing the method for manufacturing the single-electron memory. An electrode pattern and a conductive channel are manufactured by adopting electron beam photoetching technology and photoetching technology, source and drain contact electrodes are manufactured by an optical photoetching and stripping method, thin-layer silicon is manufactured by an electron beam evaporating method, then, the thin-layer silicon on the surface is manufactured into silicon quantum dots by flash annealing technology, and finally, gate electrodes are manufactured by stripping technology. The invention has simple technical steps and is compatible with the traditional microelectronic technology. The single-electron memory manufactured ...

Silicon-based solar cell and preparation method thereof

The invention discloses a preparation method of a silicon-based solar cell, comprising the following steps: successively depositing metal and photoresist on the surface of a silicon substrate; according to a preset photoetch pattern, removing the corresponding photoresist and metal so as to expose the silicon substrate; taking the metal as a mask to etch the exposed silicon substrate to form a silicon post array; removing the masking metal and the photoresist; forming a pn knot on the silicon substrate with the silicon post array; manufacturing a back electrode on the back of the silicon substrate to form a first electrode of the solar cell; coating a graphene conducting film on the pn knot to manufacture a front electrode; and forming a second electrode of the solar cell. By utilizing the preparation method, the conversion efficiency of the transistor solar cell is improved, and the production cost is lowered. The invention also discloses a silicon-based solar cell obtained by the preparation ...

STCN-based ultra-short-term photovoltaic power prediction method

The invention provides an STCN-based ultra-short-term photovoltaic power prediction method, which comprises the following steps: carrying out two-dimensional grid coding on a plurality of photovoltaic power station points according to positions, generating grid sequence data according to a two-dimensional grid coding form, constructing a CNN network layer, a TCN network layer and a Dense network layer, and sequentially connecting to form an STCN model, a CNN network layer is used for extracting space relation between feature data, then a TCN network layer is used for extracting time relation, finally photovoltaic power prediction is achieved, and prediction errors are verified. According to the method, extra data interference can be avoided, the spatial-temporal correlation modeling of each station is predicted only by using historical power and position information, the method can be deployed in a dense and irregularly distributed photovoltaic power station cluster, and a safe and stable ...

Magnetic field generation device used for cold probe station

The invention relates to a magnetic field generation device used for a cold probe station, and aims to overcome the defects of large size and inconvenience for carrying of the prior testing device. The invention provides the magnetic field generation device used for a cold probe station, which comprises a base, a sample support, and permanent magnets; two parallel screw are arranged above the base; sliding rods arranged on the screws can slide along the screws; the permanent magnets are oppositely arranged above the base, and respectively fixed on the base below one end of the screws and the middle part of the sliding rods through iron rings; and the sample support is arranged on the base in the center of the permanent magnets. the invention can adjust the magnetic strength and the magnetic direction in the position where a sample is placed; the size is small; the structure is simple; and the device is convenient to carry and easy to operate, can be seamlessly compatible with the cold probe ...

Method for preparing single electron device

The invention relates to a method for preparing a single electronic device in the technical field of nano-device manufacture. In order to overcome the defect that preparation technique for the prior single electronic device excessively depends on electron beam lithography to increase difficulty of the electron beam lithography. The invention aims to provide a method for preparing the single electronic device, which comprises the following steps: using electron beam lithography technique to manufacture an electrode pattern, preparing a thin silicon layer through an electron beam evaporation means, and then manufacturing a thin layer of silicon on the surface through quick annealing technique into a silicon quantum pot. The method has simple steps, and can be compatible with the prior microelectronic process. The single electronic device prepared by the method has large consistency, and has the advantage of low operation voltage and little power consumption.

Method for manufacturing crystalline silicon high-efficiency solar cell

The invention discloses a method for manufacturing a crystalline silicon high-efficiency solar cell, which comprises: preparing a textured surface structure on the surface of a crystalline silicon substrate; forming a PN junction structure on the crystalline silicon substrate by a diffusion method; forming a silicon nanocrystal structure on the surface by using thin film deposition technology and heat treatment; depositing a silicon nitride antireflective film on the surface of the substrate by using a plasma-reinforced chemical vapor deposition method; making an anode and a cathode by screen printing; and alloying to make the surface silicon nanocrystal modulated solar cell. In the invention, the PN junction crystalline silicon solar cell prepared by a process means used in a mass production is used, silicon nanocrystals are formed on the surface of the PN junction crystalline silicon solar cell, and under the modulating action of the silicon nanocrystals, the crystalline silicon cell ...

Composite nitrogen fertilizer

The invention relates to a compound nitrogen fertilizer which is granular and is made from the following raw materials: calculated on the basis of total weight of raw materials of the compound nitrogen fertilizer, 30-40% of urea, 50-58% of ammonium chloride, 2.5-3.0% of diluted sulfuric acid and 0.8- 1.0% of synthetic ammonia. The inventive compound nitrogen fertilizer can efficiently increase the utilization rate of nitrogen element, prolong the period of fertilizer effect, increase crop yield, reduce the agricultural pollution of nitrogen fertilizer, and protect the environment.

Method for preparing double-sided PN junction solar battery

The invention discloses a method for preparing a double-sided PN junction solar battery, which comprises the following steps of: preparing matte structures on the front side and the back side of a crystal silicon substrate; placing the crystal silicon substrate of which the front side and the back side are provided with the matte structures in a diffusion furnace to perform diffusion so as to form a double-sided PN junction structure; photoetching and corroding the back side of the crystal silicon substrate to form a positive electrode gate groove of the solar battery; oxidizing the front side and the back side of the crystal silicon substrate to form SiO2 films, and depositing Si3N4 films; coating a photoresist on the front side and the back side of the crystal silicon substrate, and performing photoetching exposure and development to form positive and negative patterns on the back side of the battery and negative electrode patterns on the front side of the battery; evaporating metal electrodes ...

Rural domestic sewage treatment system

The invention relates to the technical field of sewage treatment, in particular to a rural domestic sewage treatment system. The system comprises a grating tank for filtering large solid matters, a water collecting tank for collecting sewage, a hydraulic screen for filtering suspended solid matters, an oil and residue separation tank for separating grease and particulate matters, a regulating tank for buffering the flow of the sewage, an air flotation machine and a middle water tank for containing the sewage, which are communicated in sequence, the sewage treatment device comprises a grid tank, an anaerobic tank and an anoxic tank which are used for decomposing organic matters, an aerobic tank for degrading the organic matters, a secondary sedimentation tank for standing sewage, a final sedimentation tank for adding a flocculating agent into the sewage, and a disinfection tank for adding a disinfectant into the sewage for disinfection, the sludge concentration tank is used for collecting ...

Method for preparing high-density silicon nano-crystalline film

The invention relates to a preparation method of a high-density silicon nano-crystalline thin film, and the preparation method comprises: a silicon dioxide layer is formed on a silicon substrate; silicon monoxide is taken as a target material to be deposited on the silicon dioxide layer by the electron beam evaporation method, thereby forming a mixture thin film layer; silicon ions are implanted in the mixture thin film layer; and the mixture thin film layer is annealed to form the high-density silicon nano-crystalline thin film layer. The preparation method prepares the high-density silicon nano-crystalline thin film by the electron beam evaporation of the silicon monoxide and the ion implantation method for matching, thereby having the advantages of simple process steps, multiple purposes and ability of being compatible with the traditional Si-based CMOS technology. The surface density of the silicon nano-crystalline which is prepared by using the method can be up to 10<12>cm ...

Silicon-based nanometer column array heterojunction film solar battery and preparation method thereof

The invention discloses a silicon-based nanometer column array heterojunction film solar battery and a preparation method thereof, belonging to the field of solar battery manufacture. The method comprises the following steps: preparing a metal nanocrystalline masking layer on a P-type solar silicon substrate; using the metal nanocrystalline masking for masking, adopting a dry method to erode the silicon substrate and preparing a silicon nanometer column array; removing the metal nanocrystalline masking; sequentially depositing an intrinsic amorphous silicon layer and an N-type amorphous silicon layer and forming heterojunction; and finally, depositing a transparent conductive film layer and preparing an upper contact electrode and a lower contact electrode. The method can once prepare a solar battery array with a large area, greatly decreases the cost, has the advantages of simple preparation technology, low cost, favorable preparation efficiency and technological stability, has technological ...

Surface acoustic wave correlator manufacturing method based on micro electro mechanical technology

The invention discloses a surface acoustic wave correlator manufacturing method based on a micro electro mechanical technology, comprising the following steps: manufacturing two groups of interdigital transducers on a piezocrystal substrate, wherein two groups of interdigital transducers are unparallel and form certain angle; manufacturing an air bridge between two groups of interdigital transducers; evaporating a metal film on the air bridge, and leading out a metal electrode. The surface acoustic wave correlator manufactured by the invention has the characteristics of small volume, simple manufacturing technology and quick reaction and is easy to integrate with an integrated circuit technology; the special design of the interdigital transducer greatly reduces noise disturbance.

Magnetic field generation device used for cold probe station

The invention relates to a magnetic field generation device used for a cold probe station, and aims to overcome the defects of large size and inconvenience for carrying of the prior testing device. The invention provides the magnetic field generation device used for a cold probe station, which comprises a base, a sample support, and permanent magnets; two parallel screw are arranged above the base; sliding rods arranged on the screws can slide along the screws; the permanent magnets are oppositely arranged above the base, and respectively fixed on the base below one end of the screws and the middle part of the sliding rods through iron rings; and the sample support is arranged on the base in the center of the permanent magnets. the invention can adjust the magnetic strength and the magnetic direction in the position where a sample is placed; the size is small; the structure is simple; and the device is convenient to carry and easy to operate, can be seamlessly compatible with the coldprobe ...

Water treatment system for river regulation

The invention relates to the technical field of water treatment, in particular to a water treatment system for river regulation. The system comprises a denitrification carbon source quick mixing tank for mixing river sewage, a carbon source and a phosphorus removal agent, a denitrification filter tank for removing nitrogen compounds in wastewater, an anoxic tank for decomposing macromolecular organic matters, an activated sludge aerobic tank for degrading organic matters, and a sedimentation tank for precipitating sludge, which are communicated with one another in sequence, the sewage treatment system comprises an anoxic tank, a sedimentation tank, a contact oxidation aerobic tank for degrading organic matters, an MBR water producing tank for filtering sewage and a filter press for filter pressing of sludge, the bottom of the sedimentation tank is respectively communicated with the filter press and the anoxic tank, part of the sludge in the sedimentation tank enters the filter press, part ...

Program concurrent defect detection method and device, storage medium and electronic equipment

The invention discloses a program concurrent defect detection method and device, a storage medium and electronic equipment. The method comprises the following steps: acquiring a synchronization statement in a to-be-detected program by utilizing an automatic hijacking tool; obtaining a hijacking function, and controlling the execution of the synchronization statement by using the hijacking function; when the synchronization statement is executed, judging whether a defect in the to-be-detected program is exposed or not; when the defect in the to-be-detected program is not exposed, recording an execution track of the synchronization statement; and analyzing the execution track by utilizing lightweight prediction analysis, and determining the position of the defect in the to-be-detected program. According to the method, lightweight prediction analysis is utilized, the situation that a constraint expression is established for each synchronization event for solving is avoided, more important ...

Preparation method of high density silicon nanocrystal film

The invention relates to a preparation method of a high-density silicon nano-crystalline thin film, and the preparation method comprises: a silicon dioxide layer is formed on a silicon substrate; silicon monoxide is taken as a target material to be deposited on the silicon dioxide layer by the electron beam evaporation method, thereby forming a mixture thin film layer; silicon ions are implanted in the mixture thin film layer; and the mixture thin film layer is annealed to form the high-density silicon nano-crystalline thin film layer. The preparation method prepares the high-density silicon nano-crystalline thin film by the electron beam evaporation of the silicon monoxide and the ion implantation method for matching, thereby having the advantages of simple process steps, multiple purposes and ability of being compatible with the traditional Si-based CMOS technology. The surface density of the silicon nano-crystalline which is prepared by using the method can be up to 10<12>cm ...

A artistic pergola for chamber regulator internal environment

The utility model relates to a pergola technical field, in particular to an artistic pergola for chamber regulator internal environment, including the italic pergola, music play system and the fish bowl of setting at italic pergola top, seted up drainage channel on the italic pergola inclined plane and a plurality of flowerpot holds the chamber, the flowerpot holds the chamber upper end and communicates with each other with drainage channel through the irrigation canal, the flowerpot holds and communicates with each other through the overflow canal between chamber lower extreme and the drainage channel, irrigation canal department all is equipped with first intercepter plate, drainage channel is last, it all is equipped with the second intercepter plate to be close to first intercepter plate department, music play system includes waterproof pressure sensor, music box and controller, and the controller is connected with waterproof pressure sensor and music box electricity respectively.The ...

Method for preparing double-faced PN crystal silicon solar batteries by utilizing traditional technique

The invention discloses a method for preparing double-faced PN crystal silicon solar batteries by utilizing a large-scale traditional production-line technique, comprising the following steps: preparing a suede structure on the front side and on the back side of a crystal silicon substrate; placing the crystal silicon substrate with the suede structure on the front side and the back side in a diffusion furnace for diffusion to form a double-faced PN junction; growing Si3N4 antireflection coating on the front side and on the back side of the crystal silicon substrate; carrying out laser corrosion on the back side of the crystal silicon substrate to form a grid groove on the positive pole of a solar battery; respectively performing screen print on an anode electrode and on a cathode electrode on the back side of the crystal silicon substrate, performing heat treating and solidifying; performing screen print on the cathode electrode of the front side of the crystal silicon substrate, performing ...

Method for performing spark plasma sintering on alloy powder particles by adopting sintering aid

The invention discloses a method for performing spark plasma sintering on alloy powder particles by adopting a sintering aid. According to the method, the sintering aid is used for modifying the surface of the raw alloy powder particles, the sintering aid performs interfacial adsorption on the power particles, the functions of discharge gap regulation and interfacial resistance increase are realized, and the interfacial discharge effect and the joule heat efficiency are improved. Heat produced from sintering can be more concentrated on the particle interface, and the sintering efficiency is improved. On the basis of the low sintering temperature and short sintering time of common spark plasma sintering, the sintering temperature is further reduced, the short sintering time is further shortened, and unique functions of the spark plasma sintering are more emphasized. The interface bonding of a prepared bulk material is tighter, the consistency is high, the particles are smaller, and the comprehensive ...

Image segmentation model training method, image processing method, system and electronic equipment

The invention relates to an image segmentation model training method and system, an image processing method and system and electronic equipment, and belongs to the field of medical image processing, and the method comprises the steps: obtaining a source domain brain tissue image and a brain tissue instance label; obtaining a target domain brain tissue image; processing the source domain brain tissue image to obtain a target domain appearance brain tissue image, and processing the target domain brain tissue image to obtain a source domain appearance brain tissue image; training a student model by using the source domain brain tissue image and the target domain appearance brain tissue image; simultaneously training a student model and a teacher model by using the target domain brain tissue image and the source domain appearance brain tissue image; and updating the parameters of the student model based on a preset total loss function. Based on the preset total loss function, the student model ...

Open-phase protection device for three-phase alternating-current motor

The invention relates to the technical field of open-phase protection devices, in particular to an open-phase protection device for a three-phase alternating-current motor, and solves the problems that a wiring terminal of an open-phase protection device in the prior art is exposed outside and lacks protection, and when more dust is accumulated on the wiring terminal, electrostatic dust is easily generated and hit the wiring terminal, and the wiring terminal is damaged. And short circuit or circuit interference is easy to occur. A three-phase alternating-current motor open-phase protection device comprises an open-phase protector and wiring terminals arranged at the upper end and the lower end of the open-phase protector, two vertical plates are fixedly connected to the side wall of the open-phase protector, and a transverse plate is fixedly connected between the two vertical plates. The transverse plate is provided with a sealing part and a guiding part which are used for sealing the upper ...

Method for manufacturing single-electron memory

The invention provides a method for manufacturing a single-electron memory, which relates to the technical field of nano-devices. In order to overcome the defect of complicated technical steps in the The invention provides a method for manufacturing a single-electron memory, which relates to the technical field of nano-devices. In order to overcome the defect of complicated technical steps in themd by the method has great consistency, low operating voltage and low power consumption.tured by the method has great consistency, low operating voltage and low power consumption.anufacturing technology of the prior single-electron memory, the invention aims at providing the method for manufacturing the single-electron memory. An electrode pattern and a conductive channel aremanufacturing technology of the prior single-electron memory, the invention aims at providing the method for manufacturing the single-electron memory. An electrode pattern and a conductive channel are manufactured by adopting ...

Composite nitrogen fertilizer

The invention relates to a compound nitrogen fertilizer which is granular and is made from the following raw materials: calculated on the basis of total weight of raw materials of the compound nitrogen fertilizer, 30-40% of urea, 50-58% of ammonium chloride, 2.5-3.0% of diluted sulfuric acid and 0.8- 1.0% of synthetic ammonia. The inventive compound nitrogen fertilizer can efficiently increase the utilization rate of nitrogen element, prolong the period of fertilizer effect, increase crop yield, reduce the agricultural pollution of nitrogen fertilizer, and protect the environment.

Instrument is consolidated to template of anti - bank of stagnant water or waist rail

The utility model discloses an instrument is consolidated to template of anti - bank of stagnant water or waist rail, including location horizontal pole, two fixed pole settings, two tension springs and two gag lever posts, two gag lever post vertical fixation in both ends of location horizontal pole, and two gag lever posts are parallel to each other and all are located the downside of fixing a position the horizontal pole, two equal oscillatings of fixed pole setting are installed on the horizontal pole of location, and hug closely mutually with two gag lever posts respectively after two fixed pole setting swings, two tension springs install respectively between two fixed pole settings and location horizontal pole. This reinforcement instrument is convenient to press from both sides tight construction to the template of anti - bank of stagnant water or waist rail, just can have enough to meet the need the use, has better market perspective.

Method for manufacturing crystalline silicon high-efficiency solar cell

The invention discloses a method for manufacturing a crystalline silicon high-efficiency solar cell, which comprises: preparing a textured surface structure on the surface of a crystalline silicon substrate; forming a PN junction structure on the crystalline silicon substrate by a diffusion method; forming a silicon nanocrystal structure on the surface by using thin film deposition technology and heat treatment; depositing a silicon nitride antireflective film on the surface of the substrate by using a plasma-reinforced chemical vapor deposition method; making an anode and a cathode by screenprinting; and alloying to make the surface silicon nanocrystal modulated solar cell. In the invention, the PN junction crystalline silicon solar cell prepared by a process means used in a mass production is used, silicon nanocrystals are formed on the surface of the PN junction crystalline silicon solar cell, and under the modulating action of the silicon nanocrystals, the crystalline silicon cell can ...

W flame boiler capable of controlling flame center through combined tertiary air

The invention discloses a W flame boiler capable of controlling a flame center through combined tertiary air, which comprises a hearth, a flue gas circulating fan, a flue gas interface, two groups of pulverized coal burner components mounted on a lower hearth arch, and two groups of dry bottom hopper tertiary air nozzle components mounted at the bottom of the lower hearth, the two sets of on-arch tertiary air nozzle assemblies are installed at the junction of a lower hearth arch and a front wall and a rear wall, the two sets of upper tertiary air nozzles are installed at the position, above an upper hearth throat, of the front wall and the rear wall, and the soot blowing tertiary air nozzle assembly is installed on an inclined flue above a furnace arch. The flue gas amount of different tertiary air nozzles is adjusted to change the momentum of furnace bottom fire supporting, the momentum of arch up-down flushing, the downward momentum of a throat and the soot blowing disturbance momentum ...

Efficient disassembly and assembly type pipeline maintenance supporting device for power plant equipment maintenance

The efficient disassembly and assembly type pipeline maintenance supporting device for power plant equipment maintenance specifically comprises a sliding rail, the interior of the sliding rail is slidably connected with a control sliding plate, the upper surface of the control sliding plate is fixedly connected with a first adjusting column, and the top of the first adjusting column is fixedly connected with a first fixing cylinder; the supporting mechanism is used for supporting the bottom of the pipeline, the supporting mechanism comprises a base, a first multi-stage electric push rod is fixedly connected into the base, an electric rotating disc is fixedly connected to the top of the first multi-stage electric push rod, and a lifting assembly is fixedly connected into the base; a reinforcing mechanism is fixedly connected to the upper surface of the electric rotating disc, and the base is fixedly connected to the interior of a first fixing cylinder. And the rust removal mechanism is used ...

Binder for binder jet 3D printing and preparation method thereof

The invention discloses a binder which comprises the following components in parts by mass based on 100 parts by mass of the binder: 15-50 parts of polyethylene glycol, 5-15 parts of ethylene acrylic acid, 0-10 parts of diethylene glycol or hexanediol and the balance of ethanol. The binder is high in universality, is used for printing of most metal and part of ceramic powder bed binder spraying additive manufacturing technology, is low in degreasing temperature and free of residues, and can be suitable for ceramics from low-melting-point metal to high-sintering-temperature ceramics.

Anchor clamps are used in a steering system's guide tracked jackshaft of steel ball assembly

The utility model provides an anchor clamps are used in a steering system's guide tracked jackshaft of steel ball assembly, assembly base on setting up the body panel at the support, it uses the anchor clamps subassembly to be provided with jackshaft assembly on the base guide rail of assembly base, this jackshaft assembly is set up always advancing hand wheel control expansion or foling in assembly base one side with the anchor clamps subassembly, jackshaft assembly treats with the guide tracked jackshaft of steel ball that the rigging position centre gripping is central at the anchor clamps subassembly with the anchor clamps subassembly, the steel ball is packed into between the steel ball track by spring leaf assistance -localization real -time of the guide tracked jackshaft of steel ball with the anchor clamps subassembly through jackshaft assembly, lower steering shaft cup joints with upper steering shaft and forms an integral guide tracked jackshaft of steel ball. The utility model ...

Method for testing gas concentration by utilizing acoustic surface wave device

The invention discloses a method for testing gas concentration by utilizing an acoustic surface wave device, which quantificationally obtains the concentration of tested gas by utilizing that the propagation velocity of acoustic surface waves on an acoustic surface wave gas sensor is different before and after the surface acoustic wave gas sensor adsorbs the tested gas. The method mainly comprises the steps of: using a signal generator to transmit a short pulse signal on one side of the acoustic surface wave gas sensor at both ends; using different channels of an oscilloscope to synchronously detect both ends of the acoustic surface wave gas sensor; and then performing calibration according to the relation between a detection result and the concentration of the tested gas. The method can conveniently test various acoustic surface wave gas sensors. The method has the advantages of less equipment, simplicity, steadiness, reliability, wide application, and small error.

W flame boiler provided with double-medium secondary air nozzles and combustion method

The invention relates to the technical field of energy-saving and environment-friendly transformation of pulverized coal boilers, in particular to a W-flame boiler provided with double-medium secondary air nozzles and a combustion method, and aims to solve the problem of poor combustion economy of the boiler in a low-nitrogen operation mode. The W flame boiler comprises a W flame boiler hearth, a grading air nozzle, a flue, a hot air duct, a pulverized coal burner and an arch secondary air nozzle. The graded air nozzles are downwards inclined by 45 degrees, and the upper half area and the lower half area are arranged to be a smoke subarea and a hot air subarea respectively; a secondary air nozzle on the arch is arranged on the back fire side and adopts a direct-current air design, and the front half area and the rear half area are respectively arranged as a flue gas subarea and a hot air subarea; an adjusting valve is arranged on the pipeline from the flue to the flue gas partition, and ...

Retainer for improving sliding performance of intermediate shaft

The utility model discloses a retainer for improving the sliding performance of an intermediate shaft, which comprises a rectangular metal sheet, a row of circular through holes which are uniformly arranged at intervals and are used for assembling steel balls of the intermediate shaft are arranged in the metal sheet, and the diameter of the circular through holes is in clearance fit with the diameter of the steel balls. Under the condition that the number of the steel balls and the torque transmission mode are not reduced, the position of each steel ball is positioned only by adding the retainer, the steel ball movement mode is changed from partial rolling and partial sliding to full rolling stroke, and the sliding force performance of the ball sliding structure intermediate shaft is effectively improved. By means of the retainer, it can be effectively guaranteed that the intermediate shaft is stably installed on the whole vehicle, no abnormal sound exists in the using process, and the ...

Method for producing non-volatility memory

The invention relates to a method for preparing a non-volatilisation memory, comprising the following steps: A. impurity is injected into a semiconductor substrate to form a channel layer; B. a tunneling oxide layer, a nanocrystalline floating gate layer and a gate oxide are sequentially arranged on the channel layer, wherein, the nanocrystalline floating gate layer is formed by a rapid thermal annealing method; C. the procedure for forming a table-board is carried out; D. the procedure for forming a grid region and respectively forming a source electrode, a leakage electrode and a gate electrode is carried out. A nanocrystalline layer is obtained by adopting the way of rapid thermal annealing, and the three-terminal depletion type MOS nanocrystalline floating gate non-volatilisation memory can be finally completed by adopting the process which is compatible with the manufacturing technique of the depletion type MOS device. The method simplifies the preparation technique, reduces the preparation ...

Method for preparing particle nitrogen fertilizer

The invention relates to a method for producing a granular nitrogen fertilizer. The fertilizer is mainly made from the following raw materials: urea, ammonium chloride, diluted sulfuric acid and synthetic ammonia. The method comprises the following steps: mixing urea and ammonium chloride, loading in a granulating machine using ammonia-acid method, introducing diluted sulfuric acid and synthetic ammonia to the granulating machine, allowing ammonia-acid reactions, heating the materials inside the granulating machine up to 50-70 DEG C by using the heat released during the ammonia-acid reactions, wherein the additional amounts of diluted sulfuric acid and synthetic ammonia are controlled to enable the pH value of raw materials 6.0-6.2, transferring to a rotating drum machine for rotating drum granulation, oven-drying to obtain granular nitrogen fertilizer semi-product, and sieving the nitrogen fertilizer semi-product to obtain the granular nitrogen fertilizer. The produced granular nitrogen ...

Method for preparing particle nitrogen fertilizer

The invention relates to a method for producing a granular nitrogen fertilizer. The fertilizer is mainly made from the following raw materials: urea, ammonium chloride, diluted sulfuric acid and synthetic ammonia. The method comprises the following steps: mixing urea and ammonium chloride, loading in a granulating machine using ammonia-acid method, introducing diluted sulfuric acid and synthetic ammonia to the granulating machine, allowing ammonia-acid reactions, heating the materials inside the granulating machine up to 50-70 DEG C by using the heat released during the ammonia-acid reactions, wherein the additional amounts of diluted sulfuric acid and synthetic ammonia are controlled to enable the pH value of raw materials 6.0-6.2, transferring to a rotating drum machine for rotating drum granulation, oven-drying to obtain granular nitrogen fertilizer semi-product, and sieving the nitrogen fertilizer semi-product to obtain the granular nitrogen fertilizer. The produced granular nitrogen ...

Method for producing non-volatility memory

The invention relates to a method for preparing a non-volatilisation memory, comprising the following steps: A. impurity is injected into a semiconductor substrate to form a channel layer; B. a tunneling oxide layer, a nanocrystalline floating gate layer and a gate oxide are sequentially arranged on the channel layer, wherein, the nanocrystalline floating gate layer is formed by a rapid thermal annealing method; C. the procedure for forming a table-board is carried out; D. the procedure for forming a grid region and respectively forming a source electrode, a leakage electrode and a gate electrode is carried out. A nanocrystalline layer is obtained by adopting the way of rapid thermal annealing, and the three-terminal depletion type MOS nanocrystalline floating gate non-volatilisation memory can be finally completed by adopting the process which is compatible with the manufacturing technique of the depletion type MOS device. The method simplifies the preparation technique, reduces the preparation ...

Independent fixing structure for rear axle rack punch

The utility model provides an independent fixing structure for a rear axle rack punch, the independent fixing structure can guarantee good positioning precision of a punch after multi-time replacing of a punch, comprises a punch and a fixing base, the fixing base is provided with a fixing hole for insertion of the punch, and also comprises a fastening ball head, the external side of the punch is provided with a ball locking groove, the side wall of the fixing hole is provided with a ball head accommodating chamber, the fastening ball head can be movably accommodated in the ball head accommodating chamber in an upper-lower direction, when the fastening ball head is located at the bottom of the ball head accommodating chamber, the fastening ball head is completely disposed in the ball head accommodating chamber instead of partly penetrating in the fixing hole, when the fastening ball head is located at the upper part of the ball head accommodating chamber, the fastening ball head partly penetrates ...

Method for supplementing static analysis missing semantics based on network framework

The invention discloses a method for supplementing static analysis missing semantics based on a network framework, and the method comprises the steps: obtaining an execution log of a target network application program, and the target network application program is generated based on a target network framework; extracting a configuration mark from the target network application program based on the execution log; performing association analysis on the configuration marks to obtain supplementary semantics; and supplementing the missing semantics in the static analysis based on the supplementary semantics. According to the method, the configuration identifier is obtained by automatically mining the execution log during operation, and then missing semantics are accurately, quickly and effectively obtained through association analysis for supplementation, so that the analysis capability of a static analysis tool is effectively improved, and compared with a manual writing mode of researchers, ...

Method for preparing interdigital back contact double-sided solar cell

The invention discloses a method for preparing an interdigital back contact double-sided solar cell, which comprises the following steps of: carrying out cleaning and texturing on a crystal silicon cell plate; carrying out light diffusion and junction making on the textured crystal silicon cell plate; carrying out thermal oxidation on the crystal silicon cell plate subjected to light diffusion and junction making; slotting and perforating on the crystal silicon cell plate; carrying out heavy diffusion in a crystal silicon cell plate slot region; carrying out surface passivation to prepare an antireflection film; slotting again by laser; and preparing an electrode. The high-efficiency solar cell prepared by using the method has the advantages that the electrode is prepared once and the operation steps are simple. Double surfaces of the interdigital back contact double-sided solar cell can be irradiated by daylight and the interdigital back contact double-sided solar cell has the advantages ...

Surface acoustic wave correlator manufacturing method based on micro electro mechanical technology

The invention discloses a surface acoustic wave correlator manufacturing method based on a micro electro mechanical technology, comprising the following steps: manufacturing two groups of interdigital transducers on a piezocrystal substrate, wherein two groups of interdigital transducers are unparallel and form certain angle; manufacturing an air bridge between two groups of interdigital transducers; evaporating a metal film on the air bridge, and leading out a metal electrode. The surface acoustic wave correlator manufactured by the invention has the characteristics of small volume, simple manufacturing technology and quick reaction and is easy to integrate with an integrated circuit technology; the special design of the interdigital transducer greatly reduces noise disturbance.

Miniature multifunctional electric power ring main unit state monitoring device

The utility model discloses a miniaturized multifunctional electric power ring main unit state monitoring device, which comprises a shell, a connecting frame and an external connecting piece, and is characterized in that a box door is arranged in the middle of one side wall of the shell, a display screen is embedded in an upper position of the middle of the outer wall of the box door, and an operation panel is arranged below the display screen. The connecting frame is arranged in the middle of the other two side walls of the shell, and a dustproof filter screen is arranged at the end, away from the shell, of the connecting frame. According to the utility model, through the cooperative use of the external connection sheet, the temperature sensor I, the humidity sensor, the microprocessor, the relay and the junction box, the heat dissipation and dehumidification of the electric power ring main unit can be automatically adjusted and controlled, the normal working environment of the electric ...

Aluminum alloy powder and preparation method and application thereof

The invention relates to aluminum alloy powder and a preparation method and application thereof, and belongs to the technical field of metal powder. The problem that existing aluminum alloy powder cannot be used for additive manufacturing of an automobile crash box of a complex structure is solved. The invention discloses aluminum alloy powder which comprises the following components in percentage by mass: 2.5-4.5% of Mg, 0.15-1.65% of Zr, 0.51-2.0% of Mn, 0.1-1.5% of Si, less than or equal to 0.5% of Sc, less than or equal to 0.5% of Zn, less than or equal to 0.5% of Ti, less than or equal to 0.4% of Fe, less than or equal to 0.5% of Er, less than or equal to 0.5% of Y, 0-0.5% of Sc + Er + Y, 3.0-5.5% of Mg + Mn and the balance of Al and inevitable impurity elements. The aluminum alloy automobile crash boxes of various complex structures can be formed, the heat treatment process is not needed, the technology is simple, and the machining period is short.

VERIFICATION OF GAME SCORE

A computer-implemented method is provided, the method including: a client calculating a game score in real time according to an operation of a user, recording the operation and an operation time corresponding to the operation for generation of an operation sequence, and reporting the operation sequence and a score calculation result to a server after a game is over; the server starting a game loop, and performing the operation during the game loop according to the operation sequence, so as to calculate a real score of the user; comparing the real score with the score calculation result to verify whether the user cheats, and feeding back a verification result to the client; and the client receiving the verification result and performing a processing corresponding to the verification result. 1. A computer-implemented method , comprising:calculating a game score in real time according to an operation of a user;recording the operation and an operation time corresponding to the operation for generation of an operation sequence, wherein the operation sequence comprises a plurality of operations and a plurality of operation times each corresponding to each of the operations;reporting the operation sequence and a score calculation result to a server after a game is over; andreceiving a verification result of the game score from the server and performing a processing corresponding to the verification result, wherein the server performs the operation of the user according to the operation sequence to obtain a real score of the user, and compares the real score with the score calculation result to verify whether cheating occurs to the score calculation result.2. The method of claim 1 , wherein in the process of calculating a game score in real time and of the server performing the operation of the user claim 1 , integer calculation is employed claim 1 , and wherein the integer calculation comprises:using bytes with a preset number of bits to represent all numeric types used in ...

Methods Of Low-Temperature Fabrication Of Crystalline Semiconductor Alloy On Amorphous Substrate

Methods are discussed for producing single-crystal shapes on amorphous materials. A first method deposits a layer of Germanium-Tin (GeSn) alloy comprising between three and sixteen atomic-percent tin on material incapable of seeding crystal formation, the layer is photolithographically defined into a shape having a point having radius less than 100 nanometers; and the shape is annealed by heating to a temperature below 450 degrees Celsius. A second method also photolithographically defines a shape on a layer of GeSn, then uses a laser to heat and crystalize seed spot on the shape; and anneals the shape by heating and thereby crystalizing additional GeSn alloy of the shape. In embodiments, the crystalized GeSn serves to seed InGaP and/or InGaAs layers that may serve together with the GeSn as layers of a tandem photovoltaic cell. 1. A method for producing a single-crystal shape on amorphous materials on an integrated circuit or solar cell structure comprising:depositing a first semiconductor layer comprising a first material comprising Germanium-Tin (GeSn) alloy comprising between three and sixteen atomic percent tin, the GeSn alloy deposited on a second material, the second material incapable of seeding crystal formation in the GeSn alloy;forming the shape, the shape having a point having radius less than 100 nanometers; andannealing the shape by heating the integrated circuit to a temperature below 450 degrees Celsius.2. The method of wherein the GeSn alloy comprises between ten and eleven and a half percent tin.3. The method of wherein forming the shape is performed by photolithography.4. The method of wherein forming the shape is performed by laser scribing.5. The method of wherein the GeSn layer is between one and one thousand nanometers thick.6. The method of further comprising forming a waveguide adjacent to the shape.7. The method of wherein the second material is electrically conductive and further comprising depositing a third electrically conductive ...

Verification of game score

A computer-implemented method is provided, the method including: a client calculating a game score in real time according to an operation of a user, recording the operation and an operation time corresponding to the operation for generation of an operation sequence, and reporting the operation sequence and a score calculation result to a server after a game is over; the server starting a game loop, and performing the operation during the game loop according to the operation sequence, so as to calculate a real score of the user; comparing the real score with the score calculation result to verify whether the user cheats, and feeding back a verification result to the client; and the client receiving the verification result and performing a processing corresponding to the verification result.

Method for improving the efficiency of steam turbine of thermal power unit

The invention specifically discloses a method for improving the efficiency of steam turbine of thermal power unit, includes the following steps: step 1, using steam to treat the steam turbine of thermal power unit; step 2, introducing a detergent into the steam turbine of thermal power unit; step 3, introducing water into the steam turbine of thermal power unit for washing; step 4 for some cases, introducing a passivator into the steam turbine of thermal power unit, so as to remove the scale inside the steam turbine of thermal power unit. The method for improving the efficiency of steam turbine of thermal power unit provided by the invention can effectively remove scale and prevent scaling inside the steam turbine of thermal power unit, so as to effectively improve the working efficiency of the steam turbine of thermal power unit.

Method for producing molybdenum alloy targets

Method for producing molybdenum alloy targets

The present invention relates to a method for producing a molybdenum alloy target, and solves the problem of low density and coarser grains of the molybdenum alloy targets in the prior art. The present invention comprises subjecting a mixed powder with a mass ratio depending upon the formula composition of a molybdenum alloy to a pre-press forming process to obtain a preformed molybdenum alloy target blank; placing the preformed molybdenum alloy target blank in a capsule and subjecting the capsule to processes of preheating for degassing and vacuum seal welding; subjecting the target blank to a hot isostatic pressing process to obtain a densified molybdenum alloy prefabricated target; removing the capsule; and subjecting the molybdenum alloy prefabricated target with the capsule removed to a temperature-rising and pressure-decreasing process, followed by finish machining to obtain a molybdenum alloy target.

Ash water calorific value instrument for measuring coal quality of thermal power units

Provided is an ash water calorific value instrument for measuring coal quality of thermal power units, and the instrument includes: a sampling mechanism, the sampling mechanism is used for collecting a coal sample; a measuring mechanism, the measuring mechanism is used for detecting quality and composition of a sample; an ash water calorific value detecting mechanism, the ash water calorific value detecting mechanism is used for detecting an ash value, a moisture value and a calorific value of the coal sample; and a control unit, the control unit is used for controlling operation state of the sampling mechanism, the measuring mechanism and the ash water calorific value detecting mechanism. The coal quality is performed graded detection, so as to reduce interaction between the moisture value, ash value and heat.