Simple compressor valve group leakage rate test tool

Abstract

The utility model discloses a simple compressor valve group leakage rate test tool, which comprises a compressor and a valve group end cover used for being detachably connected with a valve group, and the air outlet end of the compressor is sequentially connected with a pressure release valve, a control valve, a pressure sensor and a connecting end part through an air duct I; a detachable connecting mechanism is arranged between the valve group end cover and the connecting end part, the pressure sensor is electrically connected with a control circuit, and the control circuit is electrically connected with the compressor; the device has the advantages of being convenient to move and use and good in test effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressor valve groups, and particularly relates to a simple test tool for the leakage amount of a compressor valve group. Background Technique

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. The motor rotates to drive the piston to compress the gas, thereby realizing the processes of compression, condensation, expansion, and evaporation in the refrigeration cycle. There are many types of compressors, including piston compressors, screw compressors, centrifugal compressors, and linear compressors, which are widely used in the fields of refrigeration, air conditioning, painting, and gas turbines. A compressor is a core component in an air conditioning system, responsible for circulating and compressing the refrigerant to complete the air conditioning refrigeration process. Its performance and efficiency directly affect the refrigeration effect and energy consumption level of the air conditioner.

[0003] The working principle of a compressor can generally be divided into four steps: First, the compressor sucks in the low-temperature and low-pressure refrigerant from the evaporator; then, the motor rotates to drive the piston to compress the refrigerant, turning it into high-temperature and high-pressure gas; next, the high-temperature and high-pressure refrigerant is sent to the condenser to release heat and becomes high-temperature and high-pressure liquid; finally, the liquid refrigerant enters the evaporator through the expansion valve, and after the pressure drops suddenly, it becomes low-temperature and low-pressure gas, completing a cycle. This process is repeated continuously, enabling the air conditioning system to continuously discharge heat from the room to achieve the purpose of adjusting the temperature.

[0004] The valve group is an important component of a refrigerator compressor, usually including a valve plate, a suction valve sheet, an exhaust valve sheet, a cylinder head gasket, a valve plate gasket, and a cylinder head. The process quality of the valve plate determines the leakage amount of the compressor. Testing the leakage amount of the valve plate is a key step in verifying the effectiveness of the solution. Currently, the method for testing the airtightness of the valve group is pump body volume testing. The special detection equipment used is relatively large and needs to be used in cooperation with an air source, making it inconvenient to move; when testing the airtightness after the pump body is assembled, the air source exhaust head port is manually aligned with the end face of the cylinder block exhaust cavity for inflation, which will cause measurement errors in the leakage value.

[0005] The problems of the existing technology are that most of the tools for testing the airtightness of the compressor pump body are mechanical instruments, which are inconvenient to operate and there are certain errors relying on manual positioning; the existing instruments are bulky and used in cooperation with an air source, making them inconvenient to move and use. Content of the Utility Model

[0006] The purpose of the utility model is to provide a simple test tool for the leakage amount of a compressor valve group aiming at the problems existing in the prior art, which has the advantages of convenient movement, convenient use, and good test effect.

[0007] To achieve the above object, the technical solution adopted by the utility model is: a simple testing tool for the leakage amount of a compressor valve group, including a compressor and a valve group end cover for detachably connecting the valve group. The air outlet end of the compressor is sequentially connected with a pressure relief valve, a control valve, a pressure sensor and a connection end through an air vent pipe I. A detachable connection mechanism is arranged between the valve group end cover and the connection end. The pressure sensor is electrically connected with a control circuit, and the control circuit is electrically connected with the compressor.

[0008] In the above solution, the compressor provides air pressure for the valve group test. After the compressed air generated by the compressor passes through the pressure relief valve, the control valve, the pressure sensor and the connection end, it reaches the valve group end cover and the valve group for leakage amount test. The control valve is used to close after the air pressure value reaches the requirement to maintain the pressure on the valve group side. The pressure sensor can test the pressure value on the valve group side in real time. A detachable connection mechanism is arranged between the connection end and the valve group end cover, which can facilitate the sealing connection between the valve group end cover and the connection end. The corresponding valve group end cover specification can be selected according to the specification of the valve group, with good adaptability. The test structure of the pressure sensor can be read and processed through the control circuit, and the control circuit can be used to control the start and stop of the compressor.

[0009] Further, a plurality of installation holes corresponding to the valve group are opened on the valve group end cover, and the valve group and the valve group end cover are connected by fasteners.

[0010] By opening installation holes on the valve group end cover to connect the fasteners, the valve group and the valve group end cover are hermetically connected by the fasteners.

[0011] Further, an air vent pipe II is connected to the valve group end cover, and a detachable connection mechanism is arranged between the air vent pipe II and the connection end.

[0012] By arranging the air vent pipe II on the valve group end cover, it is convenient to detachably connect with the connection end of the air vent pipe I.

[0013] Further, the detachable connection mechanism includes a detachable connection pipe part and a quick connector part.

[0014] A connection hole is opened on the quick connector part, and the connection pipe part is detachably connected in the connection hole.

[0015] Further, the control circuit includes a compressor control board, an upper computer and a signal collector which are sequentially electrically connected. The compressor control board is electrically connected with the compressor, and the signal collector is electrically connected with the pressure sensor.

[0016] The operation of the compressor is controlled by the upper computer in cooperation with the compressor control board, and the pressure sensor signal is transmitted to the upper computer by the signal collector, which is convenient for real-time detection.

[0017] Further, a pressure gauge is provided on the first ventilation pipeline, and a filter is connected to the first ventilation pipeline.

[0018] By setting a pressure gauge and a pressure sensor for multiple tests to ensure the stability and accuracy of test results, and setting a filter to filter the gas to prevent impurities from entering the valve group and affecting the use of the valve group.

[0019] Further, a threaded joint is provided on the first ventilation pipeline, and a screwing end for cooperating with the threaded joint is provided on the filter.

[0020] By providing a threaded joint on the first ventilation pipeline to cooperate with the screwing end of the filter, it is convenient for the replacement and maintenance of the filter.

[0021] Further, the control valve is a solenoid valve, and the solenoid valve is electrically connected to a control circuit.

[0022] By setting the control valve as a solenoid valve and electrically connecting it to the control circuit, it is convenient for control.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. Compressed gas is provided by a compressor, passed through the valve group end cover, and transported into the valve group for leak detection. The control valve can conveniently close the gas circuit for pressure holding, and the pressure value change is monitored in real time through a pressure sensor and a control circuit. The overall structure is simple, the volume is small and compact, and it is convenient to move and use.

[0025] 2. The connection end is detachably connected to the valve group end cover, and the corresponding valve group end cover specifications can be selected according to needs, which is applicable to the airtightness test of multiple specifications of valve groups. The valve group end cover and the valve group are connected by fasteners, with high assembly accuracy and good test stability, avoiding test errors caused by improper manual positioning.

[0026] 3. By setting a pressure gauge and a pressure sensor to ensure the accuracy of the test, and setting a filter to filter the gas to prevent impurities from entering the valve group and affecting the test, the test effect is good. Description of the Drawings

[0027] Figure 1 It is a structural connection diagram of a simple compressor valve group leak detection tooling according to Embodiment 1 of the present utility model;

[0028] Figure 2 It is a three-dimensional structure diagram of the valve group end cover in Embodiment 1 of the present utility model;

[0029] In the figure: 1. Compressor; 2. Pressure relief valve; 3. Control valve; 4. Pressure gauge; 5. Pressure sensor; 6. Filter; 7. Detachable connection mechanism; 8. Valve group end cover; 9. Low-voltage power supply; 10. Signal collector; 11. Host computer; 12. Signal output module; 13. Relay; 14. Compressor control board; 15. 220V power supply; 16. Mounting hole; 17. Second ventilation pipe; 18. Connection pipe part; 19. Quick connector part; 20. Threaded joint; 21. Screwed end. Detailed implementation mode

[0030] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms such as front, back, left, and right indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship when the product of the present invention is usually placed. It is only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. Embodiment 1

[0031] As Figure 1-2 shown, a simple test tool for the leakage amount of the valve group of the compressor 1 includes a compressor 1 and a valve group end cover 8 for detachably connecting the valve group. The air outlet end of the compressor 1 is sequentially connected with a pressure relief valve 2, a control valve 3, a pressure sensor 5 and a connection end through a first ventilation pipe. A detachable connection mechanism 7 is arranged between the valve group end cover 8 and the connection end. The pressure sensor 5 is electrically connected to a control circuit, and the control circuit is electrically connected to the compressor 1.

[0032] In the above solution, the compressor 1 provides air pressure for the valve group test. After the compressed air generated by the compressor 1 passes through the pressure relief valve 2, the control valve 3, the pressure sensor 5 and the connection end, it reaches the valve group end cover 8 and the valve group for leakage amount test. The control valve 3 is used to close after the air pressure value reaches the requirement to maintain the pressure on the valve group side. The pressure sensor 5 can measure the pressure value on the valve group side in real time. A detachable connection mechanism 7 is arranged between the connection end and the valve group end cover 8, which can facilitate the sealing connection between the valve group end cover 8 and the connection end. The corresponding specification of the valve group end cover 8 can be selected according to the specification of the valve group, with good adaptability. The test structure of the pressure sensor 5 can be read and processed through the control circuit, and the control circuit can be used to control the start and stop of the compressor 1.

[0033] The valve group end cover 8 is manufactured by providing a ventilation pipeline two 17 on the original cylinder head. In some embodiments, the pressure relief valve 2 and the control valve 3 can be selected as two-way valves.

[0034] Furthermore, a number of mounting holes 16 corresponding to the valve group are provided on the valve group end cover 8, and the valve group and the valve group end cover 8 are connected by fasteners.

[0035] The fasteners are connected by providing mounting holes 16 on the valve group end cover 8, and the valve group and the valve group end cover 8 are hermetically connected by the fasteners.

[0036] The fasteners include screws, and the valve group end cover 8 and the valve group are connected to the end face of the cylinder block by the screws to realize the valve group seal test.

[0037] Furthermore, a ventilation pipeline two 17 is connected to the valve group end cover 8, and a detachable connection mechanism 7 is provided between the ventilation pipeline two 17 and the connection end.

[0038] By providing the ventilation pipeline two 17 on the valve group end cover 8, it is convenient to make a detachable connection with the connection end of the ventilation pipeline one.

[0039] Furthermore, the detachable connection mechanism 7 includes a connection pipe portion 18 and a quick connector portion 19 that are detachably connected.

[0040] A connection hole is provided on the quick connector portion 19, and the connection pipe portion 18 is detachably connected in the connection hole.

[0041] The quick connector portion 19 can be a common handle type quick connector or a threaded pipe connector in the market, and the connection pipe portion 18 is matched with the structure of the quick connector portion 19.

[0042] Furthermore, the control circuit includes a compressor control board 14, a host computer 11, and a signal collector 10 that are electrically connected in sequence. The compressor control board 14 is electrically connected to the compressor 1, and the signal collector 10 is electrically connected to the pressure sensor 5.

[0043] The operation of the compressor 1 is controlled by the host computer 11 in cooperation with the compressor control board 14, and the signal of the pressure sensor 5 is transmitted to the host computer 11 by the signal collector 10, which is convenient for real-time detection.

[0044] The compressor 1 is electrically connected to the compressor control board 14, the relay 13, the signal output module 12, the host computer 11, the signal collector 10, and the pressure sensor 5 in sequence. The relay 13 is electrically connected to a 220V power supply 15, and the pressure sensor 5 is electrically connected to a low-voltage power supply 9.

[0045] Furthermore, a pressure gauge 4 is provided on the ventilation pipeline one, and a filter 6 is connected to the ventilation pipeline one.

[0046] Multiple tests are carried out by setting the pressure gauge 4 and the pressure sensor 5 to ensure the stability and accuracy of the test results. A filter 6 is set to filter the gas to prevent impurities from entering the valve group and affecting its use.

[0047] Furthermore, a threaded joint 20 is provided on the first ventilation pipe, and a screwed end 21 for cooperating with the threaded joint 20 is provided on the filter 6.

[0048] By providing the threaded joint 20 on the first ventilation pipe to cooperate with the screwed end 21 of the filter 6, it is convenient to replace and maintain the filter 6.

[0049] Furthermore, the control valve 3 is a solenoid valve, and the solenoid valve is electrically connected to the control circuit.

[0050] By setting the control valve 3 as a solenoid valve and electrically connecting it to the control circuit, it is convenient to control.

[0051] The control valve 3 is electrically connected to the upper computer 11, and the switch can be controlled through a program.

[0052] The following will describe in detail and completely the specific implementation manner of this device in conjunction with the attached drawings:

[0053] Before the test: Assemble the valve group end cover and the valve group to be tested, connect the detachable connection mechanism 7, and open the control valve 3; The relay 13 is connected to the 220V power supply, and the low-voltage power supply 9 is adjusted to the voltage required by the pressure sensor 5.

[0054] Start the test: The upper computer 11 clicks "Run", sends a signal to the signal output module 12, controls the relay 13 to be turned on, and the compressor control board 14 controls the compressor 1 to operate. The compressor 1 serves as a gas source to continuously charge and pressurize the pipeline system. Observe the pressure indication of the pressure gauge 4 and the test pressure value transmitted by the pressure sensor 5 to the computer through the signal collector 10. After the system pressure is stable, close the control valve 3; The control valve 3, the pressure gauge 4, the pressure sensor 5, the filter 6, the detachable connection mechanism 7, the valve group end cover 8, and the valve group form a closed system. Click "Test" on the upper computer, the signal output module controls the relay 13 to be open, and the compressor stops running. The system collects the pressure within a set period of time and calculates the pressure difference, that is, the leakage value.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple compressor valve group leakage test tool, characterized in that: It includes a compressor and a valve group end cover for detachably connecting the valve group. The air outlet end of the compressor is connected to a pressure relief valve, a control valve, a pressure sensor and a connecting end in sequence through a ventilation pipe. A detachable connecting mechanism is provided between the valve group end cover and the connecting end. The pressure sensor is electrically connected to a control circuit, and the control circuit is electrically connected to the compressor.

2. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: The valve group end cover is provided with a plurality of mounting holes corresponding to the valve group, and the valve group and the valve group end cover are connected by fasteners.

3. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: The valve group end cover is connected with a second ventilation pipe, and a detachable connection mechanism is arranged between the second ventilation pipe and the connection end.

4. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: The detachable connection mechanism comprises a detachably connected connection pipe portion and a quick connector portion.

5. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: The control circuit comprises a compressor control board, a host computer, and a signal collector which are electrically connected in sequence. The compressor control board is electrically connected to the compressor, and the signal collector is electrically connected to the pressure sensor.

6. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: A pressure gauge is arranged on the ventilation pipe one, and a filter is connected to the ventilation pipe one.

7. The simple compressor valve group leakage test tool according to claim 6 is characterized in that: The ventilation pipe is provided with a threaded joint, and the filter is provided with a threaded end for matching with the threaded joint.

8. The simple compressor valve group leakage test tool according to claim 1 is characterized in that: The control valve is a solenoid valve, and the solenoid valve is electrically connected to the control circuit.

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