35results about How to "Meet the actual working conditions" patented technology

The invention discloses a testing device and method for measuring the relationship between nozzle inside flow and cavitation erosion under multiple working conditions. The testing device comprises a pressure control system, a signal testing system, an injection system and a fuel supply system; the pressure control system comprises a first electromagnetic oil pressure control valve, a second electromagnetic oil pressure control valve, a pressure regulating valve, a pressure limiting valve and a back pressure cavity; the signal testing system comprises pressure sensors, flow sensors, a signal control terminal, a CCD high-speed digital camera and a computer; the injection system comprises oil atomizers and nozzle head caps; the fuel supply system comprises an oil tank, a heating tile, a fuel oil filter, an electric fuel pump, a high-pressure oil pump, a turbulator and a common-rail oil pipe. By means of the testing device, test research on influences on nozzle inside cavitation caused by nozzle inside cavitation flow generated by different injection pressures, back pressure, the fuel spray nozzle structure, the fuel temperature and the pipe inside flow state can be carried out, and measurement of influence factors of nozzle inside cavitation caused by nozzle inside cavitation flow of a diesel engine under multiple working conditions is achieved.

The invention discloses a method for sorting lithium-ion power batteries. The method mainly comprises the steps of: selecting a simulated condition, detecting batteries, storing data, designating a capacity range and reference curve, comparing battery data with a reference, sorting out batteries and so on. The method for sorting the lithium-ion power batteries, disclosed by the invention, has the advantages of simplifying sorting process of the lithium-ion power batteries and being high in sorting quality and convenient to use.

The invention provides a high-reflectance optical fiber F-P chamber transient speed variation phase high-speed linear demodulation method which comprises the following steps: measuring a relationship curve between high-reflectance multi-light optical fiber F-P chamber reversed detection interference output and scanning wavelength by using a wavelength scanning method; acquiring the primary physical chamber length of the F-P chamber; selecting central wavelength of three laser light sources according to the relationship curve between the F-P chamber reversed detection interference output and the scanning wavelength; exciting the F-P chamber through the three laser light sources; adjusting the output power of each laser light source; designing and manufacturing a static pressure experimental clamp with a laser wave pressure senor of the F-P chamber, making a static pressure loading experiment, and drawing corresponding relationship curves between the interference output and external static pressure under the excitation of the laser light sources; making a static characteristic calibration experiment by using a demodulator so as to obtain interference output variation phase of the F-P chamber and a linear relationship curve between the external static pressure and the interference output, and furthermore achieve linear calibration on the interference output variation phase of the F-P chamber.

The invention discloses a control method of a combined integrated energy-saving adjustable electrical control pneumatic electrolytic aluminum crust breaking system. A gas source gas inlet, a first electromagnetic reversing valve and a second electromagnetic reversing valve are integrated; the gas source gas inlet passes through passages of the two electromagnetic reversing valves and a throttle valve thereof and then is connected with two outlets on a control system; and the two outlets on the control system are connected with a rod cavity and a rodless cavity of the cylinder respectively. A control method comprises the following steps of: introducing gas through the gas inlet; electrifying a coil of the first electromagnetic reversing valve in an energy-saving mode; acting a valve core of the first electromagnetic reversing valve, feeding gas into the rodless cavity of the cylinder, discharging gas from the rod cavity and descending the piston rod; after breaking down an aluminum crust, cutting off power of the coil of the first electromagnetic reversing valve, feeding gas into the rod cavity, traveling back the cylinder and immediately returning the piston rod to realize rapid return; and if a hammer head cannot break down the aluminum crust, selecting the conventional mode, i.e., a non-energy-saving mode.

The invention discloses a method and a device for recording suspension arm belt loading extension and a crane. The method can comprise the following steps: if the rated lifting capacity is greater than a first weight threshold, the ratio of the suspension loading weight to the rated lifting capacity is greater than a preset coefficient, and the suspension arm extension length is greater than a length threshold, the suspension arm extension length is recorded as belt loading extension; and if the rated lifting capacity is smaller than the first weight threshold, the suspension loading weight is greater than a second weight threshold, and the suspension arm extension length is greater than the length threshold, the suspension arm extension length is recorded as the belt loading extension. The method can effectively prevent the wrong record of the suspension arm belt loading extension, and can be suitable for cranes with various model numbers.

The invention provides an aluminum alloy sacrificial anode material capable of improving the protection effect of a water / gas interface of a sewage storage tank and a preparation method thereof. The aluminum alloy sacrificial anode material comprises, by mass, 3.0-4.0% of Zn, 0.01-0.1% of In, 0.4-0.5% of Mg, 0.01-0.1% of Sn, and the balance Al. The preparation method comprises the steps of smelting an aluminum ingot to obtain molten aluminum and continuously introducing inert gas for protection in the smelting process; conducting heat preservation on the molten aluminum for 30-35 min, adding Zn to the molten aluminum, after melting and even stirring, adding In, Mg and Sn until complete melting, and conducting drossing after even mixing and then heat preservation to obtain mixed liquid; pouring the mixed liquid in a die to be molded, cooling the mixed liquid to the indoor temperature and preparing the aluminum alloy sacrificial anode material. By adding appropriate types of alloy elements at the appropriate ratio, the aluminum alloy material capable of effectively protecting the water / gas interface of the sewage storage tank is prepared, and the aluminum alloy material is dissolveduniformly in the sewage storage tank.

A pressure stabilization control system of pitching oil cylinders of an active carry-scraper comprises the first pitching oil cylinder (2), the second pitching oil cylinder (3), a main reversing valve (1), a first one-way sequence valve (7), a second one-way sequence valve (6), a reversing valve (8), a first energy accumulator (9), a second energy accumulator (10), a pressure control valve (12) and a pressure stabilization valve (13). A pressure buffer loop is connected among the first pitching oil cylinder (2), the second pitching oil cylinder (3) and the main reversing valve (1) in parallel to absorb impacts generated in the work process of the first pitching oil cylinder (2) and the second pitching oil cylinder (3). After the pressure of rod cavities or rodless cavities of the pitching oil cylinders is suddenly increased, hydraulic oil of the high-pressure cavities can be automatically conveyed to the first energy accumulator through the pressure buffer loop, and oil supplementation can be fast carried out on the low-pressure cavities from the second energy accumulator; and the heating amount of the system is small, the impact force on a pitching mechanism is effectively buffered, and the service life of the pitching mechanism of the carry-scraper is prolonged.

The invention relates to a test device for the salt expansion characteristic of salinized soil under the rigidity constraint condition. The test device comprises a temperature control box (1), a support frame (2), a sample barrel (3), a rigidity constraint mechanism, and a test data detection assembly, wherein the support frame (2) and the sample barrel (3) are arranged inside the temperature control box. With selection of different rigidity constraint mechanisms, different rigidity constraint changing environments are provided and the corresponding rigidity constraint condition is formed by cooperating with the movability of a mandril. The temperature control box adjusts the soil sample temperature to realize freeze-thaw cycle tesst under different rigidity constraints. Besides, a water injection port (27), a weighing device (11), a water adding asembly (17) and an air drying assembly and other parts are added, so that the dry-wet cycle tests and dry-wet freeze-thaw coupling tests under different rigidity constraint conditions are realized. The test device is operated simply and is assembled conveniently; the salt expansion amount and the salt expansion force in the salt expansionprocess of the sample can be measured simultaneously; the moisture content and temperature change of the sample are monitored; and the data are automatically collected.

The invention provides a method and device for selecting a motor system. The method comprises the following steps of: acquiring a first corresponding relation between various types of power and the rotating speed according to the running condition of an electric automobile; acquiring a second corresponding relation between various torques and the rotating speed according to the running condition of the electric automobile; detecting a first high-efficiency area from the first corresponding relation; detecting a second high-efficiency area from the second corresponding relation; and comprehensively considering selection of the motor system according to the first high-efficiency area and the second high-efficiency area. In the invention, a motor system with a higher matching degree can be selected, so that the motor system can be used for supplying power more effectively in the running process of the entire automobile under different working conditions, more energy is saved, and the driving range of the entire automobile is increased; and under the extreme working condition, motor heating is reduced, so that the service life of a motor battery is prolonged.

The invention discloses a machine for testing the reliability of the service life of an electromagnetic clutch bearing of an automotive air conditioner, which solves the problem that the representation of data checked by the prior bearing testing machine is relatively poor because the prior bearing testing machine cannot well simulate the actual working condition of the electromagnetic clutch bearing of the automotive air conditioner. The testing machine comprises a frame, a bearing mounting base and a driving motor, wherein the bearing mounting base is arranged on a bedplate of the frame; the driving motor is connected with the tested bearing on the bearing mounting base by a drive mechanism; an encloser is arranged on the bedplate and covers the bearing mounting base; a heating plate and an induction device are arranged in the encloser; the induction device is used for sensing the change of a channel of the tested bearing and is connected with a central controller; and the heating plate is connected with the central controller.

The invention discloses a self-adaptive irrigation system pipeline water hammer impact reducing device. The self-adaptive irrigation system pipeline water hammer impact reducing device comprises a valve inlet pipeline, a reducer and a water hammer response channel; the reducer and the outer wall of the valve inlet pipeline form a closed annular cavity; the edge of an isolating reinforcement plateis connected with the inner wall of the reducer and the outer wall of the valve inlet pipeline separately; a pressure relief action block is fit with the inner wall of the reducer and the outer wall of the pipeline; the isolating reinforcement plate and the first end face of the pressure relief action block form a pressure relief cavity; a water discharging port is formed in the pressure relief cavity; the isolating reinforcement plate and the second end face of the pressure relief action block form an action cavity; the water hammer response channel communicates with the action cavity and aninner cavity of the valve inlet pipeline; a pressure relief hole and a pipeline hole are completely staggered under the normal water conveying state, and the pressure relief hole communicates with thepipeline hole under the pressure relief state; and the self-adaptive irrigation system pipeline water hammer impact reducing device can actively respond the water hammer impact of the valve in an irrigation distribution network, effectively reduce the water hammer impact, guarantee the safety of a key part of an irrigation water distribution network and improve the stability of an irrigation water distribution system, and is suitable for the multi-user random irrigation water distribution network working condition.

The invention discloses a high-speed rail ballastless track bearing platform three-dimensional shape detection method based on a digital image. A binocular vision camera and a total station prism measurement unit form a detection system, prism groups in the binocular vision camera and the total station prism measurement unit are fixedly arranged on a measurement rack together, and camera coordinates are established; three-dimensional point cloud contour data of the track bearing platform is reconstructed by using a digital image which is obtained by shooting of the binocular vision camera and contains natural textures on the surface of the track bearing platform; and the total station prism measurement unit obtains the position of each prism in the prism group in the CP III control network, establishes the relationship between the camera coordinate system and the CP III control network, and unifies the three-dimensional point cloud contour data of the track bearing platform to the CP III control network in sequence, thereby realizing the three-dimensional shape detection of the track bearing platform. According to the invention, the detection efficiency is greatly improved, and the measurement precision meets the requirements of working conditions.

The invention discloses a piston sealing piece manufacturing process, which comprises the following steps of: 1) performing injection molding on a hard polyurethane material in a die to form a first sealing piece, wherein the first sealing piece comprises an annular body and a sealing part connected to the upper part of the annular body; 2) cutting off the sealing part of the first sealing piece formed in the step 1), and only retaining the annular body; and 3) putting the annular body into the die in the step 1), and performing injection molding on a soft polyurethane material in the die to form a second sealing piece, wherein the second sealing piece comprises the annular body formed by performing injection molding on the hard polyurethane material and a sealing part formed by performing injection molding on the soft polyurethane material, and thus obtaining the piston sealing piece. Compared with the prior art, the piston sealing piece manufacturing process has the advantages that: the annular body of the piston sealing piece is made of the hard polyurethane material, and the sealing part is made of the soft polyurethane material, so that the piston sealing piece has a simple structure, and can meet a low-friction requirement on the sealing part and a high anti-squeezing capacity requirement on the annular body and totally accord with the actual working condition requirement.

The invention discloses method for controlling an efficient energy-saving electronic control electrolytic aluminum crust breaking valve terminal. A efficient energy-saving electronic control electrolytic aluminum crust breaking valve terminal system comprises an air source inlet, a first electromagnetic reversing valve, an air control reversing valve, a throttling valve for regulating speed and a single valve for controlling fast reverse which are integrated; the air source air inlet is connected with two outlets of a valve terminal again through passages of the electromagnetic reversing valve, a pneumatic control valve and the throttling valve; the two outlets on the valve terminal are respectively connected with a rod cavity and a rodless cavity of an air cylinder; an energy-saving mode is adopted firstly, a coil of the first electromagnetic reversing valve is electrified, a valve core of the first electromagnetic reversing valve acts and controls a valve core of the air control reversing valve to the energy-saving operation position; air enters the rodless cavity of the air cylinder, the throttling valve controls the air exhaust speed of the rod cavity, the rod cavity exhausts a gas, a unidirectional valve is closed, and a piston rod runs downwards; after an aluminum crust is broken through, the coil of the valve is power off and is closed, a valve core of the valve is reset, a unidirectional valve connected with the rod cavity is started up, air enters the rod cavity rapidly, the air cylinder returns, the piston rod returns soon, and fast reverse is realized; and if the aluminum crust is difficult to break through by an electrolytic aluminum crust breaking hammer head, a conventional mode is adopted.

The invention discloses a detection system and method for measuring the final straightness of a welded rail, wherein the system comprises a base which is arranged in an operation direction of a steelrail, a movable box body, a measuring part, a clamping part, a vertical part, lifting parts, a hydraulic station and a control system; the movable box body moves on the base in the operation directionof the steel rail through a platform moving part; the measuring part is arranged on the movable box body and is used for measuring weld joint data on the steel rail; the clamping part is arranged onthe movable box body and used for clamping and fixing the steel rail; the vertical part is arranged on the movable box body and used for pressing and fixing the steel rail; the lifting parts are arranged on the front side and the rear side of the base and used for supporting the steel rail; the hydraulic station is used for providing hydraulic power for the measuring part, the clamping part and the lifting parts; and the control system is used for completing measurement and detection, data acquisition, data operation, data display and data storage of the weld joint data on the steel rail. According to the invention, errors caused by manual measurement and errors of an electronic ruler can be effectively overcome, and the labor intensity of operators is reduced.

A pressure stabilization control system of pitching oil cylinders of an active carry-scraper comprises the first pitching oil cylinder (2), the second pitching oil cylinder (3), a main reversing valve (1), a first one-way sequence valve (7), a second one-way sequence valve (6), a reversing valve (8), a first energy accumulator (9), a second energy accumulator (10), a pressure control valve (12) and a pressure stabilization valve (13). A pressure buffer loop is connected among the first pitching oil cylinder (2), the second pitching oil cylinder (3) and the main reversing valve (1) in parallel to absorb impacts generated in the work process of the first pitching oil cylinder (2) and the second pitching oil cylinder (3). After the pressure of rod cavities or rodless cavities of the pitching oil cylinders is suddenly increased, hydraulic oil of the high-pressure cavities can be automatically conveyed to the first energy accumulator through the pressure buffer loop, and oil supplementation can be fast carried out on the low-pressure cavities from the second energy accumulator; and the heating amount of the system is small, the impact force on a pitching mechanism is effectively buffered, and the service life of the pitching mechanism of the carry-scraper is prolonged.

The invention relates to the field of error measurement of large gears, in particular to an on-machine measuring instrument for pitch deviation of large gears. Including: tooth pitch deviation measurement mechanism, reciprocating motion mechanism of measurement mechanism, machine tool connection and adjustment mechanism, motion control and measurement signal processing software. The device of the invention can quickly measure the tooth pitch deviation of large gears on the machine. During the measurement process, the rotary table of the machine tool itself is used without loading and unloading the gears. The deviation measuring instrument is fixed on the column of the gear processing machine tool, and the electric module of the tooth pitch deviation measuring instrument is reciprocated to measure the tooth pitch deviation of the gear tooth by tooth; finally, the measurement results are integrated and calculated by software, and the Pitch deviation of large gears to be measured.

The invention provides a vibration damping device of a weapon station vibration damping alloy. It includes: a damper, which includes a base, a sleeve, a guide rod and a disc spring structure; a cradle and a gun body; the cradle and the sleeve are respectively fixed to the base, and the guide rod is One end is fixedly connected with the gun body, and the firing direction of the gun body is consistent with the extending direction of the guide rod; the other end of the disc spring structure and the guide rod are arranged in the sleeve, One end of the sleeve away from the guide rod has a limit end. When the gun body fires shells, the guide rod drives the disc spring structure to move toward the limit end, and the limit end is used for pressing Tighten the disc spring structure. The vibration damping device of the weapon station damping alloy improves the problems of excessive recoil displacement, secondary impact and low energy absorption rate of the rectangular coil spring of the damper in the prior art.

A self-adaptive irrigation system pipeline water hammer impact reducing device, comprising a valve inlet pipeline (1), a reducer (4), and a water hammer response channel. The reducer (4) and the outer wall of the valve inlet pipeline (1) form a closed annular cavity; the edges of an isolating reinforcement plate (21) are respectively connected to the inner wall of the reducer (4) and the outer wall of the valve inlet pipeline (1); a pressure relief action block (8) is attached to the inner wall of the reducer (4) and the outer wall of the pipeline, the isolating reinforcement plate (21) and a first end surface of the pressure relief action block (8) form a pressure relief cavity, a water discharging port is formed in the pressure relief cavity, the isolating reinforcement plate (21) and a second end surface of the pressure relief action block (8) form an action cavity, and the water hammer response channel is in communication with the action cavity and an inner cavity of the valve inlet pipeline (1); a pressure relief hole (11) and a pipeline hole (18) are completely staggered under a normal water conveying state, and the pressure relief hole (11) is in communication with the pipeline hole (18) under a pressure relief state. The water hammer impact reducing device can actively respond the water hammer impact of a valve in an irrigation water distribution pipe network, effectively reduce the water hammer impact, guarantee the safety of key components of the irrigation water distribution pipe network, and improve the stability of an irrigation water distribution system, and is applicable to a multi-user random irrigation water distribution pipe network working condition.

The invention provides an electric coupler pulling-out force testing device and a method thereof. The electric coupler pulling-out force testing device is composed of a hydraulic system, a water pressure control system and a measurement and control system. The hydraulic system is composed of a gear pump, solenoid directional valves, a pilot overflow valve, an energy accumulator, a proportional throttle valve, an oil cylinder, an air cooler, filters and a pressure gage. The water pressure control system is composed of a pressure testing pump, a variable frequency motor, stop valves, energy accumulators, pressure gages, pressure sensors, a pressure barrel, a motor frequency converter, a PLC and a touch screen. The measurement and control system is composed of pressure sensors, a displacement sensor, an industrial personal computer, a data acquisition card, a relay module and an isolation module. According to the testing device, a water pressure environment with the pressure ranging from 0 MPa to 6 MPa is built for electric coupler pulling-out, it is guaranteed that the pressure fluctuation range is within 5% in the electric coupler pulling-out process, the pulling-out speed within the range from 0 m / s to 1 m / s and the maximum pulling-out force not smaller than 5,000 N are provided, and the pulling-out force at the moment of electric coupler disengagement is calculated out.

The invention provides a device and a method for detecting the quantitative relation of the interaction action of molten iron sulfide in a furnace cylinder, and relates to the technical field of blastfurnace ironmaking. The device comprises a high-temperature tubular furnace, a corundum crucible, a stirring rod and a motor; the stirring rod consists of a corundum rod and a carbon brick cylindrical rod connected to one end of the corundum rod; the other end of the corundum rod is connected with the motor; and during application, the corundum crucible is placed in a constant-temperature zone ofthe high-temperature tubular furnace, and the carbon brick cylindrical rod end of the stirring rod enters from an upper opening of the high-temperature tubular furnace and is used for stirring a molten iron sample in the corundum crucible. The device is standard in design and high in detection result reliability, and the device can be used for detecting the molten iron samples by aiming at different blast furnaces, the quantitative relation of a furnace cylinder molten iron sulfur-titanium interaction effect conforming to the actual conditions of different blast furnaces is obtained, the molten iron component is regulated and controlled, and reasonable suggestions are provided for prolonging the service life of the furnace cylinder.

The invention discloses a hull welding temperature monitoring device. The device comprises a magnetic thermocouple, a thermocouple digital converter, a main controller and a setting and displaying unit; the magnetic thermocouple is magnetically attached to a steel plate to be measured and used for measuring welding temperature; the thermocouple digital converter is connected with the magnetic thermocouple and used for conducting nonlinear correction and cold junction compensation on the welding temperature to obtain processed temperature; the main controller is connected with the thermocoupledigital converter and used for converting the processed temperature to online temperature; the setting and displaying unit is connected with the main controller and used for displaying an online temperature and setting a temperature threshold value. The device can monitor the temperature in the welding process online.

A highly permeable magnetic soft contact two-stage copper alloy crystallizer and its preparation and application belong to the field of electromagnetic metallurgical equipment manufacturing. The composition and mass percentage of the copper alloy used in the crystallizer are: Al<0.5%, Mn 31% to 33%, Ti<0.5%, Si<0.5%, and the balance is Cu. The crystallizer includes the upper half of the crystallizer made of the above-mentioned copper alloy, and the lower half of the crystallizer made of pure copper. The connection between the upper half of the crystallizer and the lower half of the crystallizer is pure copper TIG welded, and the welding method is open V. large groove to ensure welding penetration and sufficient strength at the weld joint; an electromagnetic induction coil is surrounded on the outside of the upper half of the obtained high-permeability magnetic soft-contact two-stage copper alloy crystallizer to provide soft-contact electromagnetic force, giving The optimal power supply operating parameters provide guidance for optimizing production; the cooling effect of the crystallizer is equivalent to that of a traditional pure copper crystallizer, and can meet the inherent properties of the crystallizer to promote the initial solidification of molten steel.

The invention discloses a testing device and method for measuring the relationship between nozzle inside flow and cavitation erosion under multiple working conditions. The testing device comprises a pressure control system, a signal testing system, an injection system and a fuel supply system; the pressure control system comprises a first electromagnetic oil pressure control valve, a second electromagnetic oil pressure control valve, a pressure regulating valve, a pressure limiting valve and a back pressure cavity; the signal testing system comprises pressure sensors, flow sensors, a signal control terminal, a CCD high-speed digital camera and a computer; the injection system comprises oil atomizers and nozzle head caps; the fuel supply system comprises an oil tank, a heating tile, a fuel oil filter, an electric fuel pump, a high-pressure oil pump, a turbulator and a common-rail oil pipe. By means of the testing device, test research on influences on nozzle inside cavitation caused by nozzle inside cavitation flow generated by different injection pressures, back pressure, the fuel spray nozzle structure, the fuel temperature and the pipe inside flow state can be carried out, and measurement of influence factors of nozzle inside cavitation caused by nozzle inside cavitation flow of a diesel engine under multiple working conditions is achieved.

The invention discloses a manufacture method of a static pressure supporting system model on the basis of a cloud platform, and belongs to the technical field of support and lubrication design. A static pressure supporting system is a product with a high customization degree, and participators of all production links from users to manufactures need deep communication to manufacture the static pressure system which conforms to user demands. A tiny error of the supporting surface of an oil seal edge affects the bearing performance of the static pressure supporting system. Since the static pressure supporting system has a wide application range, users can apply the static pressure supporting system into various supporting structures, and therefore, customization demands are high. But the tiny error can not be usually completely avoided. The tiny errors of the type can be truly measured after part production. Therefore, a new design and production mode needs to be established, a designer in a laboratory and a manufacturer in a factory are connected by virtue of the cloud platform technology, and real-time data communication is carried out to obtain a true and accurate analysis result so as to improve the design reliability of the static pressure supporting system.

The invention discloses a core technology of a high-speed rotating collector shoe electrification experiment device. The core technology is that a large-diameter high-power multi-mode collector shoe energization experiment device is adopted. According to the experimental device, the effective rotating diameter of the table top of the rotary table is increased, so that higher linear speed is achieved on the premise of the same angular speed, and the highest speed can reach 300km / h; the rated power of the rotation driving motor of the experiment device is increased, so that the rotation driving motor can stably operate under a high-speed working condition. Under the high-speed working condition, the annular conductor rail and the table top of the rotary table are tightly connected through a plurality of bolts to overcome generated centrifugal force, and a layer of thick nylon plate is added between the annular conductor rail and the table top of the rotary table for insulation, so that the purpose of electrical isolation is achieved. The experiment table is provided with double collector shoes and one conducting ring, so that the diversity of electrical wiring of the device is ensured, an external power supply can be connected in from one collector shoe and connected out from the other collector shoe, or the external power supply is connected in from the conducting ring and contacted with any collector shoe, and the electrical wiring mode is greatly enriched.

An aluminum alloy sacrificial anode material for improving the water / air interface protection effect of a sewage storage tank and a preparation method thereof according to the present invention comprise the following components in terms of mass percentage: Zn 3.0-4.0%, In 0.01-0.1%, Mg 0.4-0.5% %, Sn 0.01-0.1%, and the rest is Al. Melt aluminum ingots to obtain molten aluminum, and continuously pass inert gas for protection during the smelting process; after the molten aluminum is kept warm for 30 to 35 minutes, add Zn to the molten aluminum, melt and stir evenly, then add In, Mg and Sn, until completely melted, stirred evenly, removed slag, and kept warm to obtain a mixed solution; the mixed solution was poured into a mold and cooled to room temperature to prepare the aluminum alloy sacrificial anode material. The invention prepares the aluminum alloy material capable of effectively protecting the position of the water / air interface of the sewage storage tank by adding suitable alloy element types and proportions, and dissolves evenly in the sewage storage tank.

The invention provides a high-reflectance optical fiber F-P chamber transient speed variation phase high-speed linear demodulation method which comprises the following steps: measuring a relationship curve between high-reflectance multi-light optical fiber F-P chamber reversed detection interference output and scanning wavelength by using a wavelength scanning method; acquiring the primary physical chamber length of the F-P chamber; selecting central wavelength of three laser light sources according to the relationship curve between the F-P chamber reversed detection interference output and the scanning wavelength; exciting the F-P chamber through the three laser light sources; adjusting the output power of each laser light source; designing and manufacturing a static pressure experimental clamp with a laser wave pressure senor of the F-P chamber, making a static pressure loading experiment, and drawing corresponding relationship curves between the interference output and external static pressure under the excitation of the laser light sources; making a static characteristic calibration experiment by using a demodulator so as to obtain interference output variation phase of the F-P chamber and a linear relationship curve between the external static pressure and the interference output, and furthermore achieve linear calibration on the interference output variation phase of the F-P chamber.

The invention provides a blowing-suction electromagnetic vibration precision seeding device and its control method. The suction plate is composed of multiple small air chambers, the suction hole of the bottom suction cup is equipped with a tapered suction nozzle part, the multi-air chamber partial pressure suction plate is connected with the two-degree-of-freedom manipulator; the blowing vibration seed plate device includes a top-to-bottom The vibrating seed plate, the hollow tray and the open three-layer blowing chamber are fixed in sequence, and the tray is fixed with the electromagnetic vibrator; the electromagnetic vibrator includes an adjustment shaft, a coil and an armature, and the armature and the adjustment shaft are coaxially arranged on the coil Inside, the coil is placed inside the coil fixing seat, the adjustment shaft is located above the armature, and there is a gap between the two. The invention can improve the segregation phenomenon of the populations in the seed tray, better increase the dispersion among the populations, and at the same time uniform and stabilize the seed suction airflow and improve the seed suction rate.