181results about How to "The testing process is simple" patented technology

The invention discloses a new energy automobile rapid charging diagnosis and test system and method. The system comprises an industrial personal computer serving as a control unit, an electrical safety detection module, a charging safety detection module, a man-machine interaction module, a power module, a direct current charging module and a channel switching module. The scheme aims at the intelligent diagnosis technology of the new energy automobile, the function and performance detection of key parts such as power electronic equipment of the new energy automobile can be realized, the performance and the safety condition of the automobile are evaluated, and the safety and the reliability of core components of the automobile are ensured.

The invention discloses a system and a method for evaluating the thermal insulation effect of a thermal barrier coating of a turbine blade in a rotating state, the system comprises a service environment simulation unit, a temperature field measurement unit and an evaluation unit, and the service environment simulation unit comprises a turbine blade test piece and a gas spray gun; the temperature field measuring unit comprises an infrared thermal imaging module and a thermocouple module, the thermocouple module comprises a thin film thermocouple and a miniature thermocouple, and the thin film thermocouple is arranged between the blade and the thermal barrier coating and used for obtaining a temperature field of an interface; the micro thermocouple is arranged on the surface, away from the blade, of the thermal barrier coating and used for obtaining a temperature field of the surface of the thermal barrier coating; the evaluation unit evaluates the thermal insulation effect of the thermal barrier coating according to the temperature measurement result. The real service environment of high-temperature and high-speed rotation of the thermal barrier coating of the turbine blade can be simulated, the surface of the thermal barrier coating is heated in an annular gas flame mode, the high-power and high-speed motor is adopted to drive the turbine blade to rotate at a high speed, and real-time temperature measurement in the high-speed rotation state is achieved.

The invention provides a server testing system and method, electronic equipment and a computer readable storage medium, the server testing system comprises the electronic equipment, the electronic equipment is provided with a USB port, and the electronic equipment is in communication connection with a server through the USB port; the touch display screen is used for displaying a test item menu bar; the electronic equipment comprises an interaction module which responds to a selection operation of a user on a test item menu bar through a touch display screen so as to generate configuration parameters for a server; the configuration module is used for modifying a pre-stored test script according to the configuration parameters to obtain a modified test script; the sending module is used for sending the modified test script to the server through the USB port; and the test module is used for controlling the server to execute the modified test script and generate a test result. According to the method, the test process is packaged into the test script in advance, and one or more tests can be automatically executed by connecting the USB port of the electronic equipment with the server, so that the server test automation is realized.

The invention discloses an antenna far field test system and method based on weather radar base data, and relates to the technical field of weather radar test. The transmitting antenna is mounted on the first antenna turntable and rotates along azimuth, pitching and polarization axes; an antenna to be tested and a standard horn antenna are installed on a second antenna rotary table through a radar receiver, the aperture faces of the antenna to be tested and the standard horn antenna form an included angle of 180 degrees, mechanical axes are coaxial, and the antenna to be tested and the standard horn antenna rotate along azimuth and pitch axes. The data processing device is connected with the radar receiver. The testing process is simplified, and the equipment cost and the maintenance cost are remarkably reduced. The test time is shortened, and the test precision of gain, beam width, sidelobe level and the like of the to-be-tested antenna is improved. The whole system has wider adaptability in practical application and is not limited by specific climate conditions. The test process is accelerated, and errors caused by human factors are reduced. The method has the advantages of simplicity in operation, high automation degree, high adaptability and the like, and the measurement precision and the test efficiency of antenna performance parameters are remarkably improved.

The invention relates to the field of storage device testing, and discloses a storage device power consumption testing method, device and system and a storage medium. The method comprises the following steps: generating a test command based on constructed test scene elements; sending a test command to the eMMC equipment to be tested through the serial port, and obtaining a power consumption parameter of the eMMC equipment in a corresponding test state; each test scene element corresponds to one test command; and performing power consumption analysis on the eMMC equipment according to the power consumption parameters. According to the method, the test command is generated by constructing different test scene elements, and then the performance power consumption of the storage device in the corresponding test scene is tested based on the test command; moreover, the power consumption test requirements in different test states can be met, and the power consumption test flexibility is improved.

The invention provides a method for measuring the contact resistivity of a heterojunction cell, the heterojunction cell comprises a doped silicon layer, a transparent conductive layer located on the doped silicon layer, and a plurality of grid lines arranged on the transparent conductive layer at intervals, and the method comprises the following steps: scribing a cell to obtain a unit cell to be measured; measuring a first contact resistance (RA) between the gate line and the transparent conductive layer; removing the transparent conductive layer between the adjacent grid lines, and reserving the transparent conductive layer below the grid lines; measuring a total second contact resistance (RB) between the grid line and the transparent conductive layer and between the transparent conductive layer and the doped silicon layer; calculating a contact resistance (RC) between the transparent conductive layer and the doped silicon layer from the first contact resistance (RA) and the second contact resistance (RB); and calculating the contact resistivity (rho) between the transparent conductive layer and the doped silicon layer according to the contact resistance (RC), the effective transmission distance (LT), the width (W) of the unit cell to be measured and the width (d) of the grid line. According to the measuring method, special sample preparation is not needed in the process of measuring the contact resistivity, battery pieces in mass production are directly used, and therefore the measuring method has the advantage of being simple in testing process.

The invention discloses a sealing performance test device and method for a superconducting motor refrigerant transmission sealing member, the test device comprises an inner cavity assembly, an outer cavity assembly and a plugging member, one end of the inner cavity assembly is provided with a first air vent, the other end is provided with a movable interface, and an inner radial spigot is formed on the outer wall of the inner cavity assembly at one end of the movable interface; the outer cavity assembly is coaxially arranged in the inner cavity assembly, one end, close to the movable connector, of the outer cavity assembly is provided with a second air vent, an outer radial spigot corresponding to the inner radial spigot is formed in the inner wall of the outer cavity assembly, and an inner ring and an outer ring of the sealing element to be tested are connected to the inner radial spigot and the outer radial spigot in a sealed mode respectively. Pressure measuring ports are formed in the outer wall, on two sides of the sealing element, of the outer cavity assembly, and an exhaust port is formed in the outer wall close to one side of the first ventilation port; the plugging piece is detachably arranged at the movable connector. The technical problems that an existing refrigerant transmission sealing performance testing device for the superconducting motor is too long in cooling time and complex in debugging process are solved.

The invention discloses a reagent for detecting the activity of isocitrate dehydrogenase. The reagent consists of a first reagent and a second reagent, the first reagent comprises an electron carrier, isocitric acid or isocitrate, divalent metal ions, a first reagent buffer solution, a first reagent additive, a first reagent preservative and a first reagent surfactant; the divalent metal ions comprise metal ions; the second reagent comprises a dye which comprises tetrazolium salt and has an oxidation state and a reduction state, a cofactor, a second reagent buffer solution, a second reagent additive, a coenzyme stabilizer, a second reagent surfactant and a second reagent preservative; the pH is buffered to 7-9.5 and 5-9 by the first buffer solution and the second buffer solution respectively; the first reagent additive and the second reagent additive comprise divalent metal salt, sugar, sugar alcohol, protein, chelating agent and basic amino acid; the first and second reagent surfactants comprise nonionic and anionic surfactants; the first reagent preservative and the second reagent preservative comprise sodium azide or isothiazolinones. The invention further discloses a corresponding detection method.

The present invention provides a digital twin system for attitude and orbit control based on a spacecraft cluster and a construction method thereof. The digital twin system for attitude and orbit control based on a spacecraft cluster includes several digital simulation subsystems, and the digital simulation subsystems include a source code dynamic link library of the spacecraft cluster, an attitude and orbit dynamics module, a telemetry and remote control interface, and a fault setting interface. The source code dynamic link library of the spacecraft cluster is connected to the attitude and orbit dynamics module, the telemetry and remote control interface is used to implement the telemetry and remote control function, and the fault setting interface is used to implement fault setting. The technical solution of this application simplifies the testing process of attitude and orbit control software products, shortens the development cycle; saves development costs; provides a reliable environment; and can adapt to the continuous increase in the scale of spacecraft.

The invention discloses a platform and a method for testing the response time of infrared alarm and confrontation equipment, and belongs to the technical field of infrared alarm and confrontation. Comprising an electric control system, target simulation equipment and a tested product, the target simulation equipment and the tested product are connected with the electric control system, the tested product is infrared alarm and confrontation equipment, and multiple sets of target simulation equipment are arranged in a view field of the tested product in a sliding mode in the circumferential direction; the target simulation equipment can emit medium-wave infrared light required by the infrared alarm sensor to a tested product, and can capture interference energy emitted by the tested product at the same time; and the electric control system carries out unified time service on the target simulation equipment and the tested product. According to the invention, the problems of low reaction time acquisition precision and the like caused by the fact that the traditional reaction time test method cannot automatically acquire each timestamp and the reaction time needs to be calculated and evaluated by combining the recorded picture with the timestamp through manual playback are solved.

The invention discloses a suspension bridge three-dimensional flutter critical wind speed prediction method and system based on segment model parameter correction, and relates to the technical field of bridge engineering. The method comprises the following steps: firstly, carrying out a segment model flutter test of the suspension bridge according to a base-order vibration mode to obtain a flutter critical wind speed and a flutter frequency of the suspension bridge; according to the flutter critical wind speed, a flutter derivative is obtained through interpolation calculation; and based on the principle that the two-dimensional segment model flutter system damping is equal to the three-dimensional full-bridge aeroelastic model flutter system damping, a segment model system mass correction factor is obtained, and then the segment model system mass is corrected. And repeating the steps until the value of the mass correction factor of the segment model system does not change, and taking the flutter critical wind speed obtained by the flutter test of the segment model in the current state as the predicted value of the three-dimensional flutter critical wind speed of the suspension bridge. Compared with a traditional segment model test method, the accuracy of the three-dimensional flutter critical wind speed prediction result of the suspension bridge is remarkably improved, the test operation is simple, and the efficiency is high.

The invention provides a source code compiling method and device, computer equipment and a readable storage medium, and aims to solve the problems that in components in an existing code bin, due to the fact that modification does not have an independent submission record, information of all component versions is lost, it cannot be determined that each modification is compatible with current modification, and the compatibility between the current modification and the current modification is poor. And the version management of the code library is very disordered. The method comprises the following steps: acquiring identification information corresponding to a plurality of code libraries to be managed; code storage bins and modification information storage areas corresponding to a plurality of code libraries are generated according to the identification information, each code library runs in the code storage bin, and the modification information storage areas are stored in the code storage bin; when first modification information of at least one code library in the code storage bin is received, generating a corresponding binary component according to the first modification information; and adding the binary component to the modification information storage area according to the identification information of the code library corresponding to the first modification information to complete compiling of the source code in the code storage bin.

The invention provides a continuous force measurement and calculation method for a spoke type track wheel, and relates to the technical field of wheel-rail force measurement, and the method comprises the steps: uniformly arranging a plurality of strain gauges which are connected to form a bridge circuit on the spoke type track wheel; through a bridge circuit output signal, calculating strain distribution under the action of a unit vertical force, and obtaining an actual vertical force under an external acting force; through superposition and correction of bridge circuit output signals, a transverse force is obtained, and continuous force measurement and calculation of the spoke type track wheel are completed. According to the invention, through carrying out data acquisition on the track wheels and optimizing a resolving algorithm, the force measuring device can rapidly respond to the change of the wheel-rail force, realizes continuous measurement of the wheel-rail force, ensures the real-time performance and the accuracy of test data, and is suitable for various research scenes such as a railway vehicle dynamics test and the like.

The invention discloses a plume baffle device and method for attitude control nozzle thrust non-contact measurement, and belongs to the field of engine test. The device comprises a plume baffle, a dynamic indirect force transducer and a mounting bracket. The mounting bracket is fixed on one side of the multi-component test bed, the plume baffle is coaxially and fixedly connected with the dynamic indirect force transducer, the inclined surface of the plume baffle faces the attitude and orbit control engine to be tested and is coaxial with the attitude control spray pipe, and the dynamic indirect force transducer is fixed on the mounting bracket. The plume baffle bears plume impact of the attitude control spray pipe, the dynamic indirect force measurement sensor measures the impact force borne by the plume baffle, and a measurement result is fed back to the upper computer for processing. The device is used in cooperation with a multi-component thrust vector test system, and by establishing the corresponding relation between the thrust of the attitude control spray pipe and the impact force of the plume baffle, the test problems that in the thrust vector test of the solid attitude and orbit control engine, the thrust of the orbit control spray pipe and the thrust of the attitude control spray pipe influence each other, and the thrust test error of the attitude control spray pipe is large are solved.

The invention belongs to the technical field of dynamic balance test, and discloses a balancing machine automatic test system for dynamic balance of a rotating body, which comprises a trial operation setting module for setting the rotating speed of a driving shaft in a trial operation stage of a balancing machine and marking the rotating speed as a trial operation rotating speed; the first acquisition module is used for collecting environment data of the balancing machine, and the preprocessing module is used for carrying out feature extraction on the environment data to obtain environment feature data; the model building module is used for collecting point cloud data of the to-be-detected rotating body in the operation stage and building a three-dimensional model of the to-be-detected rotating body according to the point cloud data; the second acquisition module is used for acquiring the centrifugal force of the to-be-detected rotating body when the rotating speed of the driving shaft reaches the pilot running rotating speed; the high-precision balance test is realized by automatically adjusting the calibration parameters of the balancing machine, incomplete or wrong manual input data is avoided, human intervention is effectively reduced, and the calibration efficiency and precision are improved.

The invention provides a reflector antenna field calibration device, and the device comprises a support assembly which is used for positioning and fixing a reflector antenna, and carrying out the testing and field calibration through a photogrammetry system, and is provided with a plurality of target points; the supporting assembly is used for supporting the bracket assembly and adjusting the height and the angle of the bracket assembly; wherein the supporting assembly is composed of a bottom plate, a supporting fixture and an adjusting module, the adjusting module is connected with the supporting fixture in a threaded connection mode and used for adjusting the height and the angle of the supporting assembly in the vertical direction, and the bottom plate is used for being connected with the support assembly; the support assembly is composed of a support bottom plate, a rotating shaft, a support fixture and an antenna installation bottom plate. The support bottom plate is connected with the support fixture and the supporting assembly, the rotating shaft is connected with the support bottom plate and used for being positioned with the supporting assembly and driving the support assembly to rotate so as to adjust the azimuth angle, and the antenna mounting bottom plate is connected with the support fixture and used for mounting and positioning a reflector antenna.

The invention discloses a rigidity testing device and testing method for a floating type hydraulic brake caliper, and belongs to the technical field of rigidity testing, the floating type hydraulic brake caliper comprises a caliper body, and the rigidity testing device for the floating type hydraulic brake caliper comprises a mounting bracket configured to be connected with the caliper body, the clamp body can slide relative to the mounting bracket; the detection assembly comprises two displacement sensors, the two displacement sensors are both connected with the installation support, the two displacement sensors are arranged on the two opposite sides of the clamp body respectively and arranged in the sliding direction of the clamp body, and detection heads of the displacement sensors abut against the clamp body; and the transformer is configured to pressurize or depressurize the caliper body, so that the rigidity test accuracy of the caliper body of the floating type hydraulic brake caliper can be improved, and the complexity of test operation can be reduced.

The embodiment of the invention provides an optical test method and device for identifying fly-eye lens defects and a medium. The optical test method for identifying fly's-eye lens defects comprises the following steps: enabling parallel light to pass through a fly's-eye lens to be tested and then to be projected to a lens group; focusing the light emitted by the fly's-eye lens through the lens group, so that the light forms a light spot of the fly's-eye lens on a preset imaging surface; comparing the light spot of the fly-eye lens with a standard light spot; and according to a comparison result, identifying whether the fly's-eye lens has defects or not.

The utility model discloses an on-line testing device for a frameless photovoltaic module. The device comprises a rack, a conveying and correcting module which is arranged on the rack and is used for conveying and correcting a photovoltaic module, a conduction tool which is arranged on the rack and is in contact conduction with at least one side edge of the photovoltaic module, and a testing mechanism which is positioned above the conveying and correcting module and is connected and conducted with a junction box of the photovoltaic module, a conductive elastic body which is in contact conduction with the side edge of the photovoltaic module is fixed on the conduction tool; the conduction tool is connected with the negative electrode of the test instrument, and the test mechanism is connected with the positive electrode of the test instrument to form a test loop. According to the utility model, the structure is simple, the overall layout occupies a small space, the test error can be reduced, the test efficiency is improved, and the test cost is reduced.

The invention belongs to the field of medical gas collection bags, and discloses a urea expiration test prompter which comprises a gas collection bag, a guide sheet is placed on one side of the gas collection bag, a clamping device is movably arranged on one side of the gas collection bag and the guide sheet, the clamping device comprises a clamping plate movably installed on one side of the gas collection bag and the guide sheet, and a clamping spring is arranged in the middle of the clamping plate in a matched mode. The number of the clamping plates is two, a clamping shaft is movably arranged between the clamping plates, the clamping plates are movably connected through the two ends of the clamping shaft, and a control assembly is fixedly arranged at one end of the clamping device. The problems that in the prior art, a subject often forgets specific test time easily in the waiting period, so that test is inaccurate, meanwhile, the test effect is possibly affected due to unclear reading or information omission only depending on paper guidance, a special prompt device for a urea expiration test is lacked in the current market, and the test efficiency is poor are solved. Therefore, the device and the method are suitable for medical science.

The utility model relates to the technical field of remote control technology, in particular to a flowmeter valve control controller detection device, which comprises a power supply module, an indicator light module, a main control circuit board and an assembly junction box, the power supply module, the indicating lamp module and the main control circuit board are sequentially connected and arranged in the assembly junction box; the main control circuit board is used for receiving a setting instruction of an application system, and is used for checking the type and related protocols of a measured flowmeter valve control controller according to the setting instruction of a remote center, and can be used for returning related setting parameters to the application system; the problems of remote control of the flow meter valve control controller, accurate detection of the controller under various flow meter protocols and convenience in use are solved.

The utility model discloses a burning test fixture for a PCB (Printed Circuit Board), which comprises a test platform, a control circuit board, a test probe and a display screen, and is characterized in that the test platform is used for fixing the PCB to be tested; the control circuit board is installed in the test platform. The test probe is electrically connected with the control circuit board and is used for being in contact with a test point of the PCB; the display screen is installed on the test platform, is electrically connected with the control circuit board, and is used for displaying test data. Direct display of test data is realized through the integrated display screen, and an external computer terminal is not needed; a user can check a test result in real time, data transmission and display through external equipment are not needed, and the test intuition and response speed are remarkably improved; and the fixture can be more conveniently applied to workshops, laboratories or mobile test scenes without depending on an external computer terminal, so that the adaptability is higher.

The application relates to a device performance test method and device, computer equipment and a storage medium. The method is applied to an upper computer, the upper computer is in communication connection with a benchmark communication device and a to-be-tested communication device respectively, the benchmark communication device and the to-be-tested communication device are in communication connection through at least one line, and the method comprises the following steps: acquiring a test strategy for data receiving performance test of the to-be-tested communication device; controlling the benchmark communication device to send message data to the to-be-tested communication device through at least one target line matched with the test strategy; acquiring message receiving conditions of the to-be-tested communication device for receiving the sent message data through the target lines; and determining whether the data receiving performance of the to-be-tested communication device is normal according to different message receiving conditions. The method can effectively detect the data receiving performance of the device.

The present invention relates to a wind power negative pressure bucket foundation suction pump performance test device, comprising a bucket body, wherein the lower end of the bucket body is connected to the bucket bottom, the upper end of the bucket body is connected to the bucket top, the upper end surface of the bucket top is connected to a third water pressure sensor, and a support pipe is connected between the upper end surface of the bucket bottom and the lower end surface of the bucket top inside the bucket body; the lower end of the side wall of the bucket body is connected to a water inlet assembly, and the upper end surface of the bucket top is connected to a water outlet assembly; the water outlet assembly is connected to a metering assembly. The present invention better verifies the feasibility of the wind turbine negative pressure bucket foundation selection equipment and verifies the reliability of the suction pump group equipment during on-site construction.

The utility model relates to an optical communication technology, concretely is a kind of optical branching filter multi-channel insertion loss test system, including light source module, optical switch module, polarization control module, reflection module, light splitting module, multi-channel power meter;The system function degree of integration is high, structure is complex, but can simultaneously realize the test of insertion loss and return loss, need not respectively use different equipment to test, simultaneously avoid to carry out winding treatment after through software processing etc. Complex action, reduce the input cost of test equipment, also simplify test procedure simultaneously, improve test efficiency.The system can provide friendly man-machine interface, facilitate to set test parameter, start test and view result.Satisfy data storage and data query integration, can generate data report according to customer requirement by setting condition, satisfy scale production and high quality detection.

The present invention relates to a self-test system for timing signals on a carrier rocket, comprising: a power module, a controller, an improved control mechanism and a timing tester; the improved control mechanism comprises multiple control channels, each of which can be switched between a test state or a non-test state, so that the improved control mechanism corresponds to a test state or a non-test state; the timing tester performs a self-test on the onboard timing when the improved control mechanism corresponds to the test state. The self-test system and method for timing signals on a carrier rocket of the present invention integrates the timing tester inside the carrier rocket, reduces ground test equipment and process cables, simplifies the test process, realizes onboard self-test of timing signals, and improves the level of automation. By improving the control mechanism, integrating the short-circuit protection function of pyrotechnics and the test gating function of the tester, the demand for onboard self-test is met while ensuring safety and without adding other onboard equipment.

The invention relates to the technical field of blower testing, in particular to a blower performance testing device which comprises a testing table and a plurality of blower bodies to be tested placed on the testing table, each blower body comprises a wind speed adjusting button and a temperature adjusting button, a mounting plate is mounted at the top of the testing table, and a sealing plate and a partition plate are mounted on the mounting plate. The sealing plates and the partition plates jointly form a plurality of testing cavities, and the multiple blower bodies are placed in the adjacent testing cavities respectively. Through the bevel gear, the synchronizing shaft, the spiral slide way, the reset spring and other structures, automatic pressing of the temperature adjusting button of the blower is achieved, performance testing at different temperatures is achieved, the testing efficiency is improved through the intelligent temperature adjusting mode, meanwhile, through the combined design of the limiting slide groove and the speed sensor, the testing efficiency is improved, and the testing efficiency is improved. Accurate measurement of the air speed of the blower is realized, and the comprehensiveness and the accuracy of the test are further improved.

The invention discloses a photoelectric sensor system conversion efficiency calibration system and method based on a reverberation chamber, and belongs to the technical field of photoelectric sensor conversion efficiency calibration, the system comprises an electric wave reverberation chamber, a transmitting antenna, a reference antenna and a photoelectric field sensor system; the photoelectric field sensor system is composed of a photoelectric sensor, a laser source, a photoelectric detector, a polarization maintaining optical fiber and a single-mode optical fiber. In the calibration process, the reference antenna and the photoelectric sensor system are used as receiving ends respectively, receiving power at different stirring positions in the reverberation chamber is sampled to obtain two groups of transfer functions, and the total efficiency of the photoelectric sensor system is determined by comparing the two groups of transfer functions under the condition that the radiation efficiency of the reference antenna is known. The conversion efficiency of the photoelectric sensor system is obtained by combining the relation among the power, the field intensity and the total efficiency in the free space; and the effective averaging of the incident direction and the polarization state is realized by using the uniform and isotropic electromagnetic field characteristics of the reverberation chamber.

The utility model belongs to the technical field of protection devices, and particularly relates to a temperature detection device for live equipment, which comprises a detection host, a temperature detection assembly is arranged at the bottom of the detection host, a detection needle is arranged at the detection end of the temperature detection assembly, and a connecting disc is fixedly connected to the outer side of the top of the detection needle. First clamping grooves are formed in the two sides of the connecting disc, a fixing assembly is arranged on the outer side of the connecting disc, second bolts which are evenly distributed are arranged at the fixing end of the fixing assembly, and clamping pieces are arranged on the inner sides of the second bolts; according to the live equipment temperature detection device provided by the utility model, the second clamping groove and the first clamping groove are clamped at the same time through the clamping piece, so that the connecting disc and the connecting ring are fixedly connected, the detection host and the temperature detection assembly are rapidly detached from the fixing assembly by rapidly detaching the connecting piece, no extra tool is needed, and the cost is reduced. Installation and detachment are quicker and more convenient, operation efficiency is greatly improved, and downtime is shortened.

The utility model discloses an air tightness detection device for a water pump of a dish-washing machine. The stand columns are vertically arranged on the base; the upper pressing plate is connected to the top of the stand column; the sealing seat is mounted on the base, the sealing seat is provided with a detection cavity for accommodating a pump body of a water pump to be detected, and the detection cavity is communicated with a vacuum interface; the sealing ring is arranged on the sealing seat, and the sealing ring is suitable for forming airtight sealing with the water pump body placed in the detection cavity; and the downward pressing mechanism is mounted on the upper pressing plate. The beneficial effects of the utility model are that the special test tool provided by the utility model optimizes the sealing / pressurizing mode, significantly shortens the airtightness test time of a single water pump, does not need to be installed on the whole dish-washing machine, simplifies the test process, and greatly improves the overall detection efficiency on a production line.