Testing device for follow-up valve component of diaphragm compressor

Abstract

The utility model discloses a testing device for a follow-up valve component of a diaphragm compressor, which relates to the technical field of diaphragm compressor testing and comprises a crankcase, a middle body and a cylinder head, the cylinder head is connected onto the crankcase through the middle body, and an oil path control assembly is mounted between the crankcase and an oil cavity of the cylinder head. The follow-up valve component testing device is capable of simulating working conditions of the follow-up valve component during use and testing the follow-up valve component, so that whether the follow-up valve component is qualified or not can be detected, and the follow-up valve component testing device can be used for testing the follow-up valve component. The qualified follow-up valve component can be directly used on the diaphragm compressor, and the unqualified follow-up valve component is rectified to be qualified, so that the unqualified follow-up valve component is prevented from being used on the diaphragm compressor, the test run efficiency of the diaphragm compressor is improved, and the test cost of the follow-up valve component is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm compressor testing, in particular to a testing device for a diaphragm compressor follower valve component. Background Art

[0002] Diaphragm compressors, also known as membrane compressors, are a type of reciprocating compressor in positive displacement compressors. The metal diaphragm in a diaphragm compressor is a vulnerable part. When the diaphragm is hydraulically driven, the oil side of the diaphragm is subjected to the pressure generated by the piston driven by the motor squeezing the hydraulic oil. Because the diaphragm pushes the gas to compress, the gas side of the diaphragm is subjected to the reaction force of the compressed gas. When the pressure values ​​of the gas side and the oil side on the diaphragm are within the allowable pressure difference range, the diaphragm can be prevented from being in a harsh stress environment, thereby extending the service life of the diaphragm. Therefore, controlling the pressure difference between the oil circuit and the gas circuit within a reasonable range is a key factor in extending the service life of the diaphragm.

[0003] The stroke volume of the diaphragm compressor piston is slightly larger than the cavity volume. After the compressor enters the exhaust stage, the oil pressure rises rapidly and the excess hydraulic oil needs to be discharged. Traditional compressors use a drain valve to discharge oil, and the hydraulic oil discharge pressure is fixed. However, in some cases, the intake pressure fluctuates. Using a drain valve may result in excessively high pressure differentials, causing the compressor diaphragm to produce higher local stress, reducing the life of the diaphragm, and causing safety accidents in severe cases. Therefore, a follow-up valve is used to automatically balance the oil discharge using the pressure difference between the exhaust pressure and the oil pressure, which is beneficial to extending the service life of the compressor diaphragm and ensuring the smooth operation of the compressor.

[0004] At present, the test of the follower valve is mainly carried out with the diaphragm compressor during the whole machine test. The test cost is high, and the test is less targeted and flexible, and cannot meet the needs of batch testing of the follower valve. Therefore, a testing device for the follower valve components of a diaphragm compressor is needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a testing device for a diaphragm compressor follower valve component to solve the problems existing in the prior art proposed in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A testing device for a diaphragm compressor follower valve component comprises a crankcase, a middle body and a cylinder head, wherein the cylinder head is connected to the crankcase via the middle body, an oil circuit control component is installed between the oil chamber of the crankcase and the cylinder head, an air circuit control component is connected to the air chamber of the cylinder head, and a follower valve testing component is installed between the air circuit control component, the cylinder head and the middle body.

[0008] Preferably, the oil circuit control assembly comprises a coarse filter, an oil cooler and a fine filter, one end of the coarse filter is connected to the crankcase, the other end of the coarse filter is connected to the oil cooler, and the oil cooler is sequentially connected to the fine filter, the oil pump and the one-way valve through pipelines;

[0009] The outlet end of the one-way valve 1 is respectively connected to the crankcase, the cylinder head oil chamber and the three-way valve 1, one port of the three-way valve 1 is sequentially connected to the one-way valve 2, the plunger pump 1 and the one-way valve 3, the other port of the three-way valve 1 is sequentially connected to the one-way valve 4, the plunger pump 2 and the one-way valve 5, one end of the one-way valve 3 and the one-way valve 5 are connected through the three-way valve 2, and the other port of the three-way valve 2 is connected to the cylinder head oil chamber through the one-way valve 6;

[0010] The oil chamber of the cylinder head is also connected to a three-way valve three, a one-way valve seven is installed on the connecting pipeline between the three-way valve three and the cylinder head, and the other two ports of the three-way valve three are respectively connected to the pressure gauge one and the middle body.

[0011] Preferably, the air circuit control assembly includes an air intake buffer tank, an air circuit cooler and an exhaust buffer tank, the air intake buffer tank is connected to the air intake hole of the cylinder head through an air intake pipeline, and the air intake buffer tank is connected to a ball valve 1 and a pressure gauge 3;

[0012] The gas circuit cooler is connected to the exhaust hole on the cylinder head through a pipeline, and the other end of the gas circuit cooler is connected to the exhaust buffer tank. The exhaust buffer tank is connected to the intake buffer tank through a pipeline and a ball valve three. A pressure gauge four is connected to the gas circuit cooler, and a check valve and a ball valve two are also connected to the gas circuit cooler in sequence.

[0013] Preferably, the follower valve test assembly includes a follower valve component and a second pressure gauge, wherein the second pressure gauge is connected to the follower valve component, one end of the follower valve component is connected to the exhaust hole of the cylinder head through an exhaust pipe, the other end of the follower valve component is connected to the oil chamber of the cylinder head, and the follower valve component is also connected to the middle body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can simulate the working conditions of the follower valve components when in use, test the follower valve components, and thus detect whether they are qualified. Qualified follower valve components can be directly used on the diaphragm compressor, and unqualified follower valve components are rectified until they are qualified, thereby avoiding the use of unqualified follower valve components on the diaphragm compressor, improving the test efficiency of the diaphragm compressor, and reducing the testing cost of the follower valve components.

[0016] 2. The utility model installs plunger pumps of different specifications in the oil replenishment part, selects the plunger pump matching the follower valve component of the corresponding specification through the three-way valve, and simulates the working conditions of the follower valve component, which is convenient for testing the follower valve components of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structural connection of the utility model.

[0018] In the figure: 1. crankcase; 2. coarse filter; 3. oil cooler; 4. fine filter; 5. oil pump; 6. one-way valve 1; 7. three-way valve 1; 8. one-way valve 2; 9. plunger pump 1; 10. one-way valve 3; 11. one-way valve 4; 12. plunger pump 2; 13. one-way valve 5; 14. three-way valve 2; 15. one-way valve 6; 16. cylinder head; 17. one-way valve 7; 18. three-way valve 3; 19. pressure gauge 1; 20. middle body; 21. follow-up valve component; 22. pressure gauge 2; 23. exhaust pipeline; 24. ball valve 1; 25. intake buffer tank; 26. pressure gauge 3; 27. intake pipeline; 28. air line cooler; 29. ​​exhaust buffer tank; 30. pressure gauge 4; 31. check valve; 32. ball valve 2; 33. return pipeline; 34. ball valve 3. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figure 1 , the utility model provides the following technical solutions:

[0021] A test device for a diaphragm compressor follower valve component, comprising a crankcase 1, a middle body 20 and a cylinder head 16, wherein the cylinder head 16 is connected to the crankcase 1 through the middle body 20, an oil circuit control component is installed between the crankcase 1 and the oil chamber of the cylinder head 16, and the oil circuit control component comprises a coarse filter 2, an oil cooler 3 and a fine filter 4, wherein one end of the coarse filter 2 is connected to the crankcase 1, and the other end of the coarse filter 2 is connected to the oil cooler 3, and the oil cooler 3 is sequentially connected to the fine filter 4, an oil pump 5 and a one-way valve 6 through a pipeline;

[0022] The outlet end of the one-way valve 1 6 is connected to the crankcase 1, the oil chamber of the cylinder head 16 and the three-way valve 1 7 respectively; one port of the three-way valve 1 7 is connected to the one-way valve 2 8, the plunger pump 1 9 and the one-way valve 3 10 in sequence; the other port of the three-way valve 1 7 is connected to the one-way valve 4 11, the plunger pump 2 12 and the one-way valve 5 13 in sequence; one end of the one-way valve 3 10 and the one-way valve 5 13 are connected through the three-way valve 2 14; the other port of the three-way valve 2 14 is connected to the oil chamber of the cylinder head 16 through the one-way valve 6 15;

[0023] The oil chamber of the cylinder head 16 is also connected to a three-way valve 3 18, a one-way valve 7 17 is installed on the connecting pipeline between the three-way valve 3 18 and the cylinder head 16, and the other two ports of the three-way valve 3 18 are connected to a pressure gauge 19 and a middle body 20 respectively.

[0024] The lubricating oil in the crankcase 1 passes through the coarse filter 2 to the oil cooler 3, then to the fine filter 4 and then to the oil pump 5. The oil pump 5 sends the oil to the crankcase 1, the cylinder head 16 and the plunger pump 1 9 and the plunger pump 2 12 through the one-way valve 1 6 respectively. The plunger pump 1 9 and the plunger pump 2 12 are provided with two specifications. The two specifications of the plunger pump 1 9 and the plunger pump 2 12 are switched by the three-way valve 1 7 and the three-way valve 2 14. After selecting the corresponding plunger pump, it passes through the one-way valve 6 15 to the cylinder head 16 to replenish the oil chamber of the cylinder head 16. The oil pressure in the oil chamber is read on the pressure gauge 19 through the one-way valve 7 17 and the three-way valve 3 18. The cylinder head 16 unloads the oil pressure and flows back to the middle body 20 through the three-way valve 3 18.

[0025] The air cavity of the cylinder head 16 is connected to an air circuit control assembly, which includes an air intake buffer tank 25, an air circuit cooler 28 and an exhaust buffer tank 29. The air intake buffer tank 25 is connected to the air intake hole of the cylinder head 16 through an air intake pipeline 27. The air intake buffer tank 25 is connected to a ball valve 1 24 and a pressure gauge 3 26;

[0026] The gas circuit cooler 28 is connected to the exhaust hole on the cylinder head 16 through a pipeline, and the other end of the gas circuit cooler 28 is connected to the exhaust buffer tank 29. The exhaust buffer tank 29 is connected to the intake buffer tank 25 through a pipeline and a ball valve three 34. The gas circuit cooler 28 is connected to a pressure gauge four 30, and the gas circuit cooler 28 is also connected to a check valve 31 and a ball valve two 32 in sequence.

[0027] The air inlet passes through the ball valve 1 24 to the air inlet buffer tank 25, the air inlet buffer tank 25 reads the intake pressure through the pressure gauge 3 26, and the air inlet buffer tank 25 enters the cylinder head 16 through the intake pipe 27; the medium in the cylinder head 16 is compressed and passes through the exhaust pipe 23 to the gas path cooler 28, and then to the exhaust buffer tank 29, the exhaust buffer tank 29 reads the exhaust pressure through the pressure gauge 4 30, and passes through the check valve 31 and the ball valve 2 32 to the exhaust port; the return pipe 33 is equipped with a ball valve 34, which connects the exhaust buffer tank 29 and the air inlet buffer tank 25, and the test is carried out by setting the intake and exhaust pressures of the gas path part to simulate the operating conditions of the follow-up valve component 21.

[0028] A follower valve test assembly is installed between the air circuit control assembly, the cylinder head 16 and the middle body 20; the follower valve test assembly includes a follower valve component 21 and a pressure gauge 22, the pressure gauge 22 is connected to the follower valve component 21, one end of the follower valve component 21 is connected to the exhaust hole of the cylinder head 16 through an exhaust pipeline 23, the other end of the follower valve component 21 is connected to the oil chamber of the cylinder head 16, and the follower valve component 21 is also connected to the middle body 20.

[0029] The follower valve component 21 to be tested is installed on the cylinder head 16 and connected to the oil chamber of the cylinder head 16. One side of the follower valve component 21 is connected to the exhaust pipeline 23 of the testing device. A pressure gauge 22 is installed on the follower valve component 21 to detect whether the diaphragm in the follower valve is broken. If the diaphragm of the follower valve component 21 is broken, the lubricating oil will flow back to the middle body 20.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for a diaphragm compressor follower valve component, characterized in that: The invention comprises a crankcase (1), a middle body (20) and a cylinder head (16); the cylinder head (16) is connected to the crankcase (1) through the middle body (20); an oil circuit control component is installed between the crankcase (1) and the oil chamber of the cylinder head (16); the air chamber of the cylinder head (16) is connected to an air circuit control component; and a follower valve test component is installed between the air circuit control component, the cylinder head (16) and the middle body (20); The oil circuit control component comprises a coarse filter (2), an oil cooler (3) and a fine filter (4); one end of the coarse filter (2) is connected to the crankcase (1); the other end of the coarse filter (2) is connected to the oil cooler (3); the oil cooler (3) is connected to the fine filter (4), an oil pump (5) and a one-way valve (6) in sequence through pipelines; The outlet end of the one-way valve 1 (6) is connected to the crankcase (1), the cylinder head (16) oil chamber and the three-way valve 1 (7) respectively; one port of the three-way valve 1 (7) is connected to the one-way valve 2 (8), the plunger pump 1 (9) and the one-way valve 3 (10) in sequence; the other port of the three-way valve 1 (7) is connected to the one-way valve 4 (11), the plunger pump 2 (12) and the one-way valve 5 (13) in sequence; one end of the one-way valve 3 (10) and the one-way valve 5 (13) are connected through the three-way valve 2 (14); the other port of the three-way valve 2 (14) is connected to the cylinder head (16) oil chamber through the one-way valve 6 (15); The oil chamber of the cylinder head (16) is also connected to a three-way valve three (18), a one-way valve seven (17) is installed on the connecting pipeline between the three-way valve three (18) and the cylinder head (16), and the other two ports of the three-way valve three (18) are respectively connected to a pressure gauge one (19) and a middle body (20).

2. A testing device for a diaphragm compressor follower valve component according to claim 1, characterized in that: The gas circuit control assembly comprises an intake buffer tank (25), an air circuit cooler (28) and an exhaust buffer tank (29); the intake buffer tank (25) is connected to an intake hole of a cylinder head (16) via an intake pipeline (27); and the intake buffer tank (25) is connected to a ball valve 1 (24) and a pressure gauge 3 (26); The gas circuit cooler (28) is connected to the exhaust hole on the cylinder head (16) through a pipeline, and the other end of the gas circuit cooler (28) is connected to the exhaust buffer tank (29). The exhaust buffer tank (29) is connected to the intake buffer tank (25) through a pipeline and a ball valve three (34). The gas circuit cooler (28) is connected to a pressure gauge four (30), and the gas circuit cooler (28) is also connected to a check valve (31) and a ball valve two (32) in sequence.

3. A testing device for a diaphragm compressor follower valve component according to claim 1, characterized in that: The follower valve test assembly comprises a follower valve component (21) and a second pressure gauge (22), wherein the second pressure gauge (22) is connected to the follower valve component (21), one end of the follower valve component (21) is connected to an exhaust hole of a cylinder head (16) via an exhaust pipe (23), the other end of the follower valve component (21) is connected to an oil chamber of the cylinder head (16), and the follower valve component (21) is also connected to a middle body (20).

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