A high water-based radial plunger pump comprehensive performance test experimental device

Abstract

The application relates to a high-water-base radial plunger pump comprehensive performance test device, which comprises a T-shaped table, a test pump being detachably connected to the T-shaped table, the test pump being a double-input-shaft pump, one end of the input shaft of the test pump being detachably connected to the output shaft of a three-phase asynchronous variable-frequency motor through a first transmission part, the other end of the input shaft of the test pump being detachably connected to the output shaft of a loading system through a second transmission part, the test pump being provided with a total liquid inlet, a total liquid outlet, a plurality of lubricating oil inlets, the plurality of lubricating oil inlets being detachably connected to a lubricating system, the total liquid inlet being detachably connected to an auxiliary system, the total liquid outlet being detachably connected to a three-way pipe joint, the other end of the three-way pipe joint being detachably connected to the loading system, the third end of the three-way pipe joint and the loading system being detachably connected to the auxiliary system. The application can synchronously test the plunger pair characteristics and the whole pump performance of the plunger pump, so that the test result can more truly reflect the actual working characteristics of the hydraulic pump.

Description

Technical Field

[0001] This invention belongs to the technical field of testing devices, and in particular relates to a comprehensive performance testing device for a high water-based radial plunger pump. Background Technology

[0002] In fully mechanized coal mining equipment, the vast majority of high-water-based pumps used in coal faces worldwide are horizontal piston pumps with valve distribution. These pumps typically employ packing seals and require speed reducers, resulting in a loosely structured, large, heavy, and noisy pump that struggles to meet the rapidly changing fluid requirements of the support system. Therefore, research on high-water-based radial piston pumps has become a hot topic, and comprehensive testing of the piston pair characteristics and overall pump performance under different operating conditions is essential in this research process.

[0003] Most existing hydraulic pump characteristic testing devices focus on axial piston pumps for oil media. Furthermore, the piston pair characteristic testing devices often simplify or modify the piston pump structure, simulating piston pump movement by designing single-piston or multi-piston test benches for local parameter measurements. While these devices are simple to design and manufacture, they differ significantly from actual piston pumps in function. Therefore, they cannot accurately reflect the complex mechanical relationships and working characteristics of key components in a real pump, resulting in certain errors in the test results. Moreover, the piston pair characteristic tests and overall pump performance tests are not conducted simultaneously, failing to truly reflect the intrinsic relationship between the piston pair's working characteristics and the overall pump performance.

[0004] Therefore, it is necessary to design a comprehensive performance testing device for high water-based radial plunger pumps to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a comprehensive performance testing device for a high water-based radial plunger pump to solve the above-mentioned problems. While maintaining the original pump structure as much as possible, the device modifies the local structure and arranges sensors inside the pump to simultaneously test the characteristics of the plunger pair and the overall pump performance, thereby providing support for the research of high water-based radial plunger pumps.

[0006] To achieve the above objectives, the present invention provides the following solution: a comprehensive performance testing device for a high water-based radial plunger pump, comprising a T-shaped platform, on which a test pump is detachably connected. The test pump is a dual-input shaft pump. One input shaft of the test pump is detachably connected to the output shaft of a three-phase asynchronous variable frequency motor via a first transmission part. The other input shaft of the test pump is detachably connected to the output shaft of a loading system via a second transmission part. The test pump has a main inlet, a main outlet, and several lubricating oil inlets. The several lubricating oil inlets are detachably connected to a lubrication system. The main inlet is detachably connected to an auxiliary system. The main outlet is detachably connected to a three-way pipe connector. The other end of the three-way pipe connector is detachably connected to the loading system. The third end of the three-way pipe connector and the loading system are both detachably connected to the auxiliary system. The test pump has a test observation section.

[0007] Preferably, the test observation section includes a plurality of transparent windows opened on the pump casing of the pump under test, the transparent windows corresponding to the piston cylinder liner of the pump under test, and the end cover of the pump under test is provided with a plurality of transparent holes, the transparent holes corresponding one-to-one with the transparent windows.

[0008] Preferably, the plunger cylinder liner includes a first cylinder liner, a second cylinder liner, a third cylinder liner, and several original cylinder liners. The outer wall of the first cylinder liner has a thermocouple temperature sensor mounting hole, the outer wall of the second cylinder liner has a miniature pressure sensor mounting hole and an oil inlet hole, the outer wall of the third cylinder liner has an eddy current displacement sensor mounting hole, and a spare sensor is installed on the original cylinder liner.

[0009] Preferably, the first transmission unit includes a first diaphragm coupling, one end of which is detachably connected to the output shaft of the three-phase asynchronous frequency converter motor, the other end of which is fixedly connected to one end of a first torque tachometer, the other end of which is fixedly connected to one end of a second diaphragm coupling, the other end of which is detachably connected to one input shaft of the pump under test, and the first torque tachometer is detachably connected to the T-shaped platform via a first torque tachometer base.

[0010] Preferably, the second transmission unit includes a third diaphragm coupling, one end of which is detachably connected to the input shaft of the pump under test, and the other end of which is fixedly connected to one end of a second torque tachometer. The second torque tachometer is detachably connected to the T-shaped platform via a second torque tachometer base, and the other end of which is fixedly connected to one end of a fourth diaphragm coupling. The other end of the fourth diaphragm coupling is fixedly connected to an overrunning clutch, which is detachably connected to the output shaft of the loading system.

[0011] Preferably, the loading system includes a loading motor, which is detachably connected to the T-shaped platform via a loading motor base. The output shaft of the loading motor is detachably connected to the overrunning clutch. The loading motor has an inlet and an outlet. The inlet is detachably connected to the three-way pipe connector, and the outlet is detachably connected to the auxiliary system.

[0012] Preferably, the lubrication system includes a lubrication system pump station, the bottom of which is detachably connected to the T-shaped platform, and the outlet of the lubrication system pump station is detachably connected to a lubricating oil circuit integration block, which is detachably connected to a plurality of lubricating oil inlets.

[0013] Preferably, the auxiliary system includes an emulsion tank, the outlet of which is detachably connected to the inlet of a centrifugal pump, the outlet of which is detachably connected to the main inlet, the third end of the three-way connector being detachably connected to one end of a pilot-operated proportional overflow valve, the other end of which is detachably connected to the emulsion tank, the emulsion tank having a return port, and the outlet being detachably connected to the return port.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] 1) This invention, while maintaining the original pump structure as much as possible, makes local structural modifications. By setting a test observation section on the pump under test, the test results can more accurately reflect the actual working characteristics of the pump.

[0016] 2) This invention simultaneously tests the overall performance of the tested pump and the characteristics of the plunger pair, comprehensively reflecting the actual working characteristics of the plunger pair. The mechanical efficiency and volumetric efficiency of the tested pump are obtained through the first transmission part and the second transmission part, and comprehensive tests are conducted under different pressures and speeds. This allows for a more intuitive reflection of the intrinsic relationship between the working characteristics of the plunger pair and the overall pump performance.

[0017] 3) This invention is based on a power recovery design. The three-phase asynchronous frequency conversion motor first drives the pump under test to rotate, generating high-pressure, high-water-based liquid, which is then supplied to the loading system, thereby driving the loading system to rotate. The output shaft of the loading system is connected to the shaft of the pump under test through the second transmission part, and together with the three-phase asynchronous frequency conversion motor, they drive the pump under test to rotate, thereby realizing power recovery and saving resources.

[0018] 4) This invention has two hydraulic systems: a high water-based hydraulic system and a lubrication system. The two systems work independently but are interdependent. The high water-based medium can be used as a coolant to cool the lubricating oil in the lubrication system, thereby achieving a closed-loop circulation of the entire hydraulic system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view of the present invention;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 This is an isometric view of the pump under test in this invention;

[0023] Figure 4 This is a cross-sectional view of the pump casing of the test pump of the present invention;

[0024] Figure 5 This is a schematic diagram of the first cylinder liner of the present invention;

[0025] Figure 6 This is a schematic diagram of the second cylinder liner of the present invention;

[0026] Figure 7 This is a schematic diagram of the third cylinder liner of the present invention;

[0027] Figure 8 This is a piping diagram of the hydraulic system of the present invention.

[0028] The components include: 1. T-shaped platform; 2. Lubrication system pump station; 3. Lubricating oil circuit integrated block; 4. Three-phase asynchronous frequency conversion motor; 5. Motor base; 6. First diaphragm coupling; 7. First torque and tachometer base; 8. First torque and tachometer; 9. Second diaphragm coupling; 10. L-shaped support; 11. Third diaphragm coupling; 12. Second torque and tachometer; 13. Second torque and tachometer base; 14. Fourth diaphragm coupling; 15. Overrunning clutch; 16. Loading motor; 17. Loading motor base; 18. Flow meter; 19. Pilot-operated proportional relief valve; 20. Emulsion tank; 21. Centrifugal pump; 22. Pump casing; 23. End cover; 24. Transparent hole; 25. Transparent window; 26. ... 27. Cylinder liner; 28. Second cylinder liner; 29. ​​Third cylinder liner; 30. First stepped mating surface; 31. Second stepped mating surface; 32. Planar mating surface; 33. Thermocouple temperature sensor mounting hole; 34. Miniature pressure sensor mounting hole; 35. Oil inlet hole; 36. Eddy current displacement sensor mounting hole; 37. First suction pipe; 38. Second suction pipe; 39. Main supply pipe; 40. Return pipe; 41. Supply pipe; 42. Main inlet; 43. Main outlet; 44. Lubricating oil inlet; 45. Drain pipe; 46. T-joint; 47. High-pressure pipe; 48. Inlet pipe; 49. Outlet pipe; 50. Pump under test; 51. Inlet; 52. Outlet; 53. Return port. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-8This invention provides a comprehensive performance testing device for a high-water-based radial plunger pump, comprising a T-shaped platform 1, on which a test pump 49 is detachably connected. The test pump 49 is a dual-input shaft pump. One input shaft of the test pump 49 is detachably connected to the output shaft of a three-phase asynchronous variable frequency motor 4 via a first transmission part. The other input shaft of the test pump 49 is detachably connected to the output shaft of a loading system via a second transmission part. The test pump 49 has a main inlet 41, a main outlet 42, and several lubricating oil inlets 43. The several lubricating oil inlets 43 are detachably connected to a lubrication system. The main inlet 41 is detachably connected to an auxiliary system. The main outlet 42 is detachably connected to a three-way pipe connector 45. The other end of the three-way pipe connector 45 is detachably connected to the loading system. The third end of the three-way pipe connector 45 and the loading system are both detachably connected to the auxiliary system. The test pump 49 has a test observation section.

[0032] The T-shaped platform 1 is fixedly connected to the L-shaped support 10. The pump under test 49 is detachably installed on the L-shaped support 10. The T-shaped platform 1 is also fixedly connected to the motor base 5. The three-phase asynchronous frequency conversion motor 4 is detachably installed on the motor base 5.

[0033] The test observation section further optimizes the design by including several transparent windows 25 on the pump housing 22 of the test pump 49, with the transparent windows 25 corresponding to the piston cylinder liner of the test pump 49. The end cover 23 of the test pump 49 is provided with several transparent holes 24, with each transparent hole 24 corresponding to a transparent window 25.

[0034] The pump casing 22 and the end cover 23 achieve sealing of the high water-based liquid annular flow channel through the first stepped mating surface 29, the second stepped mating surface 30 and the radial sealing device on the end cover 23, and achieve sealing of the lubricating oil cavity through the planar mating surface 31 and the planar sealing device on the end cover 23.

[0035] The design is further optimized so that the plunger cylinder liner includes a first cylinder liner 26, a second cylinder liner 27, a third cylinder liner 28, and several original cylinder liners. The outer wall of the first cylinder liner 26 has a thermocouple temperature sensor mounting hole 32. The outer wall of the second cylinder liner 27 has a miniature pressure sensor mounting hole 33 and an oil inlet hole 34. The outer wall of the third cylinder liner 28 has an eddy current displacement sensor mounting hole 35. A spare sensor is installed on the original cylinder liner.

[0036] Furthermore, the original cylinder liners can be fitted with corresponding sensors according to actual measurement needs.

[0037] The mounting holes for the above three types of sensors are located at different positions in three directions on their respective cylinder liners. Furthermore, each cylinder liner is cut into a flat surface in the sensor mounting direction to facilitate sensor installation and accommodate the sensor's size.

[0038] Since all plungers in a radial piston pump operate on the same principle, in order to obtain the temperature, pressure, and film thickness characteristics of the piston auxiliary oil film in one go, and considering factors such as the limitations of sensor installation positions on the cylinder liners and the convenience of sensor wiring, three types of sensors are installed on the first cylinder liner 26, the second cylinder liner 27, and the third cylinder liner 28, respectively.

[0039] Three thermocouple temperature sensor mounting holes 32 are machined on the surface of the first cylinder liner 26. Due to the continuity of heat transfer and the high thermal conductivity of the material of the first cylinder liner 26, the temperature of a local area inside the first cylinder liner 26 is almost the same as that of the oil film. At the same time, in order to keep the oil film as intact as possible, the oil film temperature is measured non-contactly, that is, the thermocouple temperature sensor mounting holes 32 on the first cylinder liner 26 are not drilled through, forming a blind hole for mounting. Meanwhile, the gap between the temperature sensor thermocouple probe and the blind hole is filled with epoxy resin.

[0040] Three miniature pressure sensor mounting holes 33 are machined on the surface of the second cylinder liner 27. Each miniature pressure sensor mounting hole 33 has an oil inlet hole 34 machined in the center. Since the deformation of the piezoelectric ceramic caused by pressure is extremely small, and in order to ensure the test accuracy, the pressure needs to be applied directly to the sensor surface, so a direct measurement method is required.

[0041] Three eddy current displacement sensor mounting holes 35 are machined on the surface of the third cylinder liner 28.

[0042] The mounting holes for the above three types of sensors are located in three different directions around their respective cylinder liners, and the center distance of the mounting holes can be set appropriately in the axial direction according to different plunger pair mating lengths. The three pressure measuring points are distributed as follows: one measuring point is close to the bottom dead center of the plunger stroke, one measuring point is close to the top dead center of the plunger stroke, and the other measuring point is located in the middle of the above two measuring points. Depending on its size, the sensor can be installed on the plunger pair cylinder liner first, and then as a whole onto the pump housing 22; or the sensor can be installed after the plunger pair cylinder liner is installed onto the pump housing 22. In this case, to facilitate sensor installation, the sensor cable is designed as an aviation plug cable.

[0043] The scheme is further optimized. The first transmission unit includes a first diaphragm coupling 6. One end of the first diaphragm coupling 6 is detachably connected to the output shaft of the three-phase asynchronous frequency converter motor 4. The other end of the first diaphragm coupling 6 is fixedly connected to one end of a first torque tachometer 8. The other end of the first torque tachometer 8 is fixedly connected to one end of a second diaphragm coupling 9. The other end of the second diaphragm coupling 9 is detachably connected to one input shaft of the pump under test 49. The first torque tachometer 8 is detachably connected to the T-shaped platform 1 through the first torque tachometer base 7.

[0044] Further optimizing the scheme, the second transmission unit includes a third diaphragm coupling 11. One end of the third diaphragm coupling 11 is detachably connected to the input shaft of the pump under test 49. The other end of the third diaphragm coupling 11 is fixedly connected to one end of a second torque tachometer 12. The second torque tachometer 12 is detachably connected to the T-shaped platform 1 via a second torque tachometer base 13. The other end of the second torque tachometer 12 is fixedly connected to one end of a fourth diaphragm coupling 14. The other end of the fourth diaphragm coupling 14 is fixedly connected to an overrunning clutch 15. The overrunning clutch 15 is detachably connected to the output shaft of the loading system.

[0045] The scheme is further optimized. The loading system includes a loading motor 16. The loading motor 16 is detachably connected to the T-shaped platform 1 via a loading motor base 17. The output shaft of the loading motor 16 is detachably connected to the overrunning clutch 15. The loading motor 16 has an inlet 50 and an outlet 51. The inlet 50 is detachably connected to the three-way pipe connector 45, and the outlet 51 is detachably connected to the auxiliary system.

[0046] The scheme is further optimized. The lubrication system includes a lubrication system pump station 2. The bottom end of the lubrication system pump station 2 is detachably connected to the T-shaped platform 1. The outlet end of the lubrication system pump station 2 is detachably connected to a lubricating oil circuit integration block 3. The lubricating oil circuit integration block 3 is detachably connected to several lubricating oil inlets 43.

[0047] The lubrication system pump station 2 consists of a lubrication pump, overflow valve, filter, cooler, check valve, etc. In this invention, the number of lubricating oil inlets 43 is preferably five. The lubrication system pump station 2 is connected to the lubricating oil circuit integration block 3 through the main supply pipe 38. The lubricating oil circuit integration block 3 is connected to the five lubricating oil inlets 43 through five supply pipes 40. The lubrication system pump station 2 is connected to the test pump 49 through the return pipe 39. The lubrication system pump station 2, the main supply pipe 38, the lubricating oil circuit integration block 3, the supply pipes 40, the test pump 49, and the return pipe 39 form a closed loop.

[0048] The scheme is further optimized. The auxiliary system includes an emulsion tank 20. The outlet end of the emulsion tank 20 is detachably connected to the inlet end of a centrifugal pump 21. The outlet end of the centrifugal pump 21 is detachably connected to the main inlet 41. The third end of the three-way pipe connector 45 is detachably connected to one end of a pilot-operated proportional relief valve 19. The other end of the pilot-operated proportional relief valve 19 is detachably connected to the emulsion tank 20. The emulsion tank 20 has a return port 52. The outlet 51 and the return port 52 are detachably connected.

[0049] The emulsion tank 20 is connected to the inlet of the centrifugal pump 21 through the first suction pipe 36. The outlet of the centrifugal pump 21 is connected to the main inlet 41 through the second suction pipe 37. The main outlet 42 is connected to the three-way connector 45 through the drain pipe 44. A flow meter 18 is installed between the drain pipe 44 and the three-way connector 45. The other end of the three-way connector 45 is connected to the inlet 50 of the loading motor 16 through the inlet pipe 47. The outlet 51 of the loading motor 16 is connected to the return port 52 through the outlet pipe 48. The third end of the three-way connector 45 is connected to the pilot-operated proportional relief valve 19 through the high-pressure pipe 46.

[0050] The working process of this invention is as follows:

[0051] The three-phase asynchronous frequency converter motor 4 is controlled by a PLC to rotate, which in turn drives the tested pump 49 to rotate, generating a high-pressure, high-water-based liquid. This high-pressure, high-water-based liquid is input to the loading motor 16 via hydraulic pipelines, which in turn drives the loading motor 16 to rotate. The output shaft of the loading motor 16 is connected to the pump shaft of the tested pump 49 via a third diaphragm coupling 11, a fourth diaphragm coupling 14, and an overrunning clutch 15. Therefore, at this time, the loading motor 16 and the three-phase asynchronous frequency converter motor 4 together drive the tested pump 49 to rotate, achieving power recovery. To prevent the tested pump 49 from drawing in cavitation, a centrifugal pump 21 is installed at the main inlet 41 to provide a low-pressure, high-water-based liquid. The lubrication system pump station 2 provides low-pressure lubricating oil to the test pump 49 through the lubricating oil circuit integration block 3 and the supply pipe 40, ensuring the lubrication of the main friction pairs of the test pump 49 and preventing friction and wear. The entire comprehensive performance test device has two hydraulic systems, namely a high water-based hydraulic system and a lubrication system. The two work independently but are interdependent. The high water-based medium can be used as a coolant to cool the lubricating oil in the lubrication system pump station 2, thereby realizing the closed circulation of the entire hydraulic system.

[0052] A third diaphragm coupling 11, a fourth diaphragm coupling 14, and an overrunning clutch 15 are installed between the tested pump 49 and the loading motor 16 to prevent the loading motor 16 from rotating simultaneously when the three-phase asynchronous frequency converter motor 4 drives the tested pump 49. This reduces wear on the loading motor 16 and decreases the starting load on the three-phase asynchronous frequency converter motor 4. No gear acceleration device is used between the tested pump 49 and the loading motor 16; the transmission ratio is 1. When the speed of the three-phase asynchronous frequency converter motor 4 is lower than the speed of the loading motor 16, the overrunning clutch 15 is engaged, and the loading motor 16 drives the tested pump 49 to rotate, achieving power recovery. Conversely, when the speed of the loading motor 16 is lower than the speed of the three-phase asynchronous frequency converter motor 4, the overrunning clutch 15 is in an overrunning state, and the loading motor 16 will idle, preventing the system pressure from building up. Therefore, flow matching conditions must be met to achieve power recovery. This test setup uses a pilot-operated proportional relief valve 19 and a loading motor 16 to load the system. A suitable displacement loading motor 16 is selected to match the flow rate of the tested pump 49, ensuring that excess flow exits the pilot-operated proportional relief valve 19, guaranteeing its normal operation, and thus achieving pressure loading and power recovery of the system. Simultaneously, the three-phase asynchronous variable frequency motor 4 compensates for energy losses caused by leakage, friction, etc.

[0053] When testing the pump under test 49, the comprehensive performance testing apparatus can adjust the speed of the pump under test 49 via a three-phase asynchronous variable frequency motor 4, and control the system's working pressure via a pilot-operated proportional relief valve 19, thereby achieving tests at different pressures and speeds. Simultaneously, it tests the characteristics of the plunger assembly within the plunger pump and the overall pump performance. The actual working characteristics of the plunger assembly are comprehensively reflected by three types of sensors: temperature, pressure, and film thickness. The mechanical efficiency of the pump under test 49 is obtained through the first torque-speed meter 8 and the second torque-speed meter 12, and the volumetric efficiency of the pump under test 49 is obtained through the flow meter 18.

[0054] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A comprehensive performance testing device for a high-water-based radial plunger pump, characterized in that, Includes a T-shaped platform (1), on which a test pump (49) is detachably connected. The test pump (49) is a dual-input shaft pump. One end of the test pump (49) is detachably connected to the output shaft of a three-phase asynchronous variable frequency motor (4) via a first transmission part. The other end of the test pump (49) is detachably connected to the output shaft of a loading system via a second transmission part. The test pump (49) has a main inlet (41), a main outlet (42), and several lubricating oil inlets. The lubricating oil inlet (43) and several of the lubricating oil inlets (43) are detachably connected to the lubrication system. The main inlet (41) is detachably connected to the auxiliary system. The main outlet (42) is detachably connected to the three-way pipe connector (45). The other end of the three-way pipe connector (45) is detachably connected to the loading system. The third end of the three-way pipe connector (45) and the loading system are both detachably connected to the auxiliary system. The test pump (49) is provided with a test observation section. The second transmission unit includes a third diaphragm coupling (11), one end of which is detachably connected to the input shaft of the pump under test (49), and the other end of which is fixedly connected to one end of a second torque tachometer (12). The second torque tachometer (12) is detachably connected to the T-shaped platform (1) via a second torque tachometer base (13). The other end of the second torque tachometer (12) is fixedly connected to one end of a fourth diaphragm coupling (14), and the other end of the fourth diaphragm coupling (14) is fixedly connected to an overrunning clutch (15). The overrunning clutch (15) is detachably connected to the output shaft of the loading system. The loading system includes a loading motor (16), which is detachably connected to the T-shaped platform (1) via a loading motor base (17). The output shaft of the loading motor (16) is detachably connected to the overrunning clutch (15). The loading motor (16) has an inlet (50) and an outlet (51). The inlet (50) is detachably connected to the three-way pipe connector (45), and the outlet (51) is detachably connected to the auxiliary system. The auxiliary system includes an emulsion tank (20), the outlet end of which is detachably connected to the inlet end of a centrifugal pump (21), the outlet end of which is detachably connected to the main inlet (41), the third end of the three-way pipe connector (45) is detachably connected to one end of a pilot-operated proportional overflow valve (19), the other end of which is detachably connected to the emulsion tank (20), the emulsion tank (20) has a return port (52), and the outlet (51) is detachably connected to the return port (52).

2. The comprehensive performance testing device for a high water-based radial plunger pump according to claim 1, characterized in that, The test observation section includes several transparent windows (25) opened on the pump casing (22) of the test pump (49). The transparent windows (25) correspond to the piston cylinder liner of the test pump (49). The end cover (23) of the test pump (49) is provided with several transparent holes (24). The transparent holes (24) correspond one-to-one with the transparent windows (25).

3. The comprehensive performance testing device for a high water-based radial plunger pump according to claim 2, characterized in that, The plunger cylinder liner includes a first cylinder liner (26), a second cylinder liner (27), a third cylinder liner (28), and several original cylinder liners. The outer wall of the first cylinder liner (26) has a thermocouple temperature sensor mounting hole (32). The outer wall of the second cylinder liner (27) has a miniature pressure sensor mounting hole (33) and an oil inlet hole (34). The outer wall of the third cylinder liner (28) has an eddy current displacement sensor mounting hole (35). The original cylinder liners are equipped with spare sensors.

4. The comprehensive performance testing device for a high water-based radial plunger pump according to claim 1, characterized in that, The first transmission unit includes a first diaphragm coupling (6), one end of which is detachably connected to the output shaft of the three-phase asynchronous frequency converter motor (4), the other end of which is fixedly connected to one end of a first torque tachometer (8), the other end of which is fixedly connected to one end of a second diaphragm coupling (9), the other end of which is detachably connected to one end of the input shaft of the pump under test (49), and the first torque tachometer (8) is detachably connected to the T-shaped platform (1) through a first torque tachometer base (7).

5. The comprehensive performance testing device for a high water-based radial plunger pump according to claim 1, characterized in that, The lubrication system includes a lubrication system pump station (2), the bottom of which is detachably connected to the T-shaped platform (1), and the outlet end of the lubrication system pump station (2) is detachably connected to a lubricating oil circuit integration block (3), which is detachably connected to several lubricating oil inlets (43).

Images