Test system for pump

Abstract

The utility model discloses a test system for a pump, which belongs to the technical field of pump test devices, and comprises an oil tank, a driving device, a pump to be tested, a motor and pump conversion device and a pump oil suction port conversion device, the motor and pump conversion device comprises a transition plate, a connecting cover and a coupling, the coupling is arranged in the connecting cover, and the oil suction port conversion device is arranged in the transition plate. The connecting cover is arranged on the driving device and is in transmission connection with the driving device and the to-be-tested pump, and the transition plate is arranged on the side, connected with the to-be-tested pump, of the connecting cover and is detachably connected with the connecting cover and the to-be-tested pump; the oil absorption conversion device comprises a pipeline, a first connecting end and a second connecting end, the first connecting end and the second connecting end are arranged at the two ends of the pipeline, the first connecting end is connected with an oil tank, the second connecting end is detachably connected with the to-be-tested pump, and an oil outlet of the to-be-tested pump is connected with the oil tank; the effect of testing multiple pumps through one testing system is achieved, the testing cost is reduced, and the economic benefits of the testing system are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pump testing devices, and in particular to a pump testing system. Background Technology

[0002] With the continuous development of modern industry, the demand for pumps in various industries is becoming increasingly diversified, with pumps of different displacements, power, control methods, and structures constantly emerging. Current technologies design separate experimental systems for each type of pump, which undoubtedly increases costs significantly and leads to resource waste and environmental pollution. Given the increasingly tight energy supply, designing a testing system that can meet the needs of multiple pumps is now a matter of urgency.

[0003] Therefore, how to design a pump experimental system that can be used for multiple types of pumps to reduce experimental costs is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a pump testing system that can test the effects of multiple pumps through a single testing system, thereby reducing testing costs and improving the economic efficiency of the testing system.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a pump testing system, including an oil tank, a drive unit, a pump under test, a motor and a pump conversion device, and a pump suction port conversion device. The motor and pump conversion device includes a transition plate, a connecting cover, and a coupling. The coupling is placed inside the connecting cover and is connected to the drive unit and the pump under test respectively. The transition plate is placed on the side of the connecting cover connected to the pump under test and is detachably connected to the connecting cover and the pump under test respectively.

[0007] The oil suction conversion device includes a pipe and a first connecting end and a second connecting end located at both ends of the pipe. The first connecting end is connected to an oil tank, and the second connecting end is detachably connected to the pump under test. The oil outlet of the pump under test is connected to the oil tank.

[0008] Preferably, a simulated load valve is provided on the connecting pipeline between the oil outlet of the pump under test and the oil tank.

[0009] Preferably, a high-pressure filter and a pressure measuring device are provided between the simulated load valve and the oil outlet of the pump under test.

[0010] Preferably, an overflow channel is provided between the oil outlet of the pump under test and the oil tank, and an overflow valve is provided on the overflow channel. The overflow channel is connected in parallel with the channel provided with the simulated load valve.

[0011] Preferably, the oil outlet of the pump under test is further provided with a one-way valve, and the flow direction of the one-way valve is from the pump under test to the oil tank.

[0012] Preferably, it further includes a cooling device for reducing oil temperature and a waste oil treatment device for treating waste oil. The cooling device includes an oil cooler, the inlet of which is connected to the oil tank via a first switching valve 5, and the outlet of which is connected to the oil tank.

[0013] Preferably, the outlet of the oil cooler is connected to the oil tank via a second switching valve.

[0014] Preferably, the waste oil treatment device includes a waste oil tank located below the pump to be tested, and the waste oil tank is connected to the oil tank through an oil suction filter, a return oil filter and a motor pump set.

[0015] Preferably, a third switching valve and a flexible joint are provided on the pipeline connecting the first connection end of the oil suction conversion device to the oil tank.

[0016] Preferably, the oil tank is further equipped with a temperature controller, a liquid level controller, an air filter, and an oil drain valve.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] 1. This utility model sets up a motor and pump conversion device between the drive unit and the pump under test, and a pump suction port conversion device between the oil tank and the pump under test. When testing different pumps, the corresponding motor and pump conversion device and pump suction port conversion device can be replaced. Compared with the method of establishing a test system for each pump, this utility model can test different pumps through a single test system, which can reduce test costs and obtain good economic and social benefits.

[0019] The other technical solutions of this utility model have achieved the following technical effects compared with the prior art:

[0020] 2. This utility model, through the coordinated operation of a temperature controller and a cooling device, can control the oil temperature in the oil tank within a suitable temperature range, avoiding the impact of excessively high system oil temperature on test performance. In addition, this utility model uses a return oil filter and a suction oil filter to perform dual filtration of waste oil, ensuring the cleanliness of the oil returning to the oil tank, realizing the recycling of waste oil, and avoiding waste of resources and environmental pollution. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a pump testing system disclosed in a specific embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the motor and pump conversion device disclosed in a specific embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the transition plate disclosed in a specific embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the pump suction port conversion device disclosed in a specific embodiment of the present invention.

[0026] The components are as follows: 1. Oil tank; 2. Liquid level controller; 3. Second switching valve; 4. Oil cooler; 5. First switching valve; 6. Return oil filter; 7. Second pressure test connector; 8. Motor pump set; 9. Suction filter; 10. Waste oil tank; 11. Third switching valve; 12. Flexible joint; 13. Pump suction port conversion device; 14. Motor and pump conversion device; 15. Drive device; 16. Pump to be tested; 17. Second check valve; 18. Pressure gauge; 19. Pressure sensor; 20. Overflow valve; 21. First pressure test connector; 22. High pressure filter; 23. Simulated load valve; 24. First check valve; 25. Temperature controller; 26. Air filter; 27. Drain valve; 28. Connecting cover; 29. ​​Transition plate; 30. Coupling; 31. First connecting hole; 32. Second connecting hole; 33. First connecting end; 34. Pipeline; 35. Second connecting end. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 4 As shown, this utility model provides a pump testing system, including an oil tank 1, a drive unit 15, a pump under test 16, a motor and pump conversion device 14, and a pump suction port conversion device 13. The motor and pump conversion device 14 includes a transition plate 29, a connecting cover 28, and a coupling 30. The coupling 30 is placed inside the connecting cover 28 and is connected to the drive unit 15 and the pump under test 16 respectively. The transition plate 29 is placed on the side of the connecting cover 28 connected to the pump under test 16 and is detachably connected to the connecting cover 28 and the pump under test 16 respectively. The pump suction port conversion device 13 includes a pipe 34 and a first connecting end 33 and a second connecting end 35 placed at both ends of the pipe 34. The first connecting end 33 is connected to the oil tank 1, and the second connecting end 35 is detachably connected to the pump under test 16. The oil outlet of the pump under test 16 is connected to the oil tank 1.

[0030] The transition plate 29 is provided with a first connecting hole 31 and a second connecting hole 32. The transition plate 29 is connected to the connecting cover 28 through the first connecting hole 31 and to the pump under test 16 through the second connecting hole 32. Different transition plates 29 are set for different pumps under test 16. When testing different pumps, the corresponding transition plate 29 is replaced. For different pump suction port conversion devices 13, the first connecting end 33 is a flange connected to the suction pipe of the oil tank 1. The second connecting end 35 is adjusted according to the suction port size of different pumps. It can be that only the second connecting end 35 is detachably connected to the pipe 34. When testing different pumps, the corresponding second connecting end 35 is replaced. Alternatively, the second connecting end 35, the first connecting end 33 and the pipe 34 can be made into a module. In this case, the first connecting end 33 is also detachably connected to the oil tank 1. When testing different pumps, the corresponding module is replaced. The drive device 15 can be a drive mechanism such as an electric motor or a diesel engine. In one embodiment, the drive device 15 is a servo motor. The pump source part of the servo motor can provide power, save energy and protect the environment, and control the flow rate of the pump. The speed can be adjusted according to different pumps 16 under test.

[0031] A simulated load valve 23 is installed on the connecting pipeline between the oil outlet of the pump 16 under test and the oil tank 1. The simulated load valve 23 is a hydraulic control valve used to simulate load conditions. By adjusting the flow rate and velocity of the oil flow, it simulates the operation of mechanical load, allowing the pump test system to be operated in a test chamber. To improve the performance and service life of the simulated load valve 23, in one embodiment, a high-pressure filter 22 and a pressure measuring device are provided between the simulated load valve 23 and the oil outlet of the pump 16 under test. The high-pressure filter 22 is used to filter out solid and liquid impurities in the compressed air, and the pressure measuring device is used to measure the pressure on the pipeline. The pressure measuring device includes a first pressure measuring device and a backup pressure measuring device. The first pressure measuring device includes a pressure sensor 19 and a pressure gauge 18, and the second pressure measuring device includes a first pressure testing connector 21 or a first pressure testing connector 21 and a pressure gauge 18. An overflow channel is provided between the oil outlet of the pump 16 under test and the oil tank 1. An overflow valve 20 is installed on the overflow channel, which is connected in parallel with a channel equipped with a simulated load valve 23. A first pressure measuring device is located before the overflow channel and the simulated load valve 23 connected in parallel. This device measures the total pressure of the oil flow from the pump 16 under test. When the oil pressure measured by the first pressure measuring device is higher than the requirement of the simulated load valve 23, the overflow valve 20 is opened to release pressure. When the oil pressure measured by the first pressure measuring device is lower than the requirement of the simulated load valve 23, the overflow valve 20 is adjusted down or closed to pressurize. A backup pressure measuring device is located at the inlet of the simulated load valve 23. When the first pressure measuring device malfunctions, the backup pressure measuring device is activated. Furthermore, a switch valve can be installed between the backup pressure measuring device and the simulated load valve 23. When the pressure measured by the backup pressure measuring device meets the requirements, the switch valve opens; when the pressure measured by the backup pressure measuring device does not meet the requirements, the switch valve closes to avoid damage to the simulated load valve 23. In one embodiment, a one-way valve is also provided between the simulated load valve 23 and the oil tank 1. The flow direction of the one-way valve is from the simulated load valve 23 to the oil tank 1, so as to avoid oil backflow damaging the simulated load valve 23.

[0032] A check valve is also provided at the oil outlet of the pump 16 under test. For easy distinction, the check valve between the simulated load valve 23 and the oil tank 1 is called the first check valve 24, and the check valve provided at the oil outlet of the pump 16 under test is called the second check valve 17. The flow direction of the second check valve 17 is from the pump 16 under test to the oil tank 1.

[0033] The pump testing system provided by this utility model also includes a cooling device for reducing oil temperature and a waste oil treatment device for treating waste oil. The cooling device includes an oil cooler 4. The inlet of the oil cooler 4 is connected to the oil tank 1 through a first switching valve 5, and the outlet of the oil cooler 4 is connected to the oil tank 1. The oil cooler 4 is a device with an internal suction structure. When the oil temperature in the oil tank 1 rises to a certain value after running for a period of time, the first switching valve 5 is activated, and the oil cooler 4 draws the oil from the oil tank 1 into its interior. After cooling, the oil flows back to the oil tank 1, thereby cooling the high-temperature oil in the oil tank 1. In one embodiment, a second switching valve 3 is provided on the connecting pipe between the outlet of the oil cooler 4 and the oil tank 1. When the oil in the oil cooler 4 is cooled to a set temperature, the second switching valve 3 opens, allowing the cooled oil to flow back to the oil tank 1.

[0034] The waste oil treatment device includes a waste oil tank 10 located below the pump 16 under test. When the pump 16 is disassembled, the waste oil in the pump 16 flows into the waste oil tank 10. The connecting pipeline between the waste oil tank 10 and the oil tank 1 is sequentially equipped with a suction filter 9, a motor pump unit 8, and a return filter 6. The motor pump unit 8 is used to extract the waste oil from the waste oil tank 10. The waste oil undergoes dual filtration through the suction filter 9 and the return filter 6, thoroughly filtering out impurities before flowing back to the oil tank 1. In one embodiment, a second pressure testing connector 7 is also provided on the pipeline connecting the waste oil tank 10 and the oil tank 1.

[0035] In one embodiment, a third switching valve 11 and a flexible joint 12 are provided on the pipeline connecting the first connection end 33 of the oil suction conversion device to the oil tank 1. The oil tank 1 is also equipped with a temperature controller 25, a liquid level controller 2, an air filter 26, and an oil drain valve 27. The air filter 26 connects the oil tank 1 to the outside air to prevent excessive pressure inside the oil tank 1. The components used in this invention, such as the simulated load valve 23, high-pressure filter 22, pressure sensor 19, first pressure testing connector 21, second pressure testing connector 7, oil cooler 4, waste oil tank 10, oil suction filter 9, and return oil filter 6, are all existing products. The first switching valve 5, second switching valve 3, and third switching valve 11 are all butterfly valves. This invention features stability, reliability, convenient operation, reasonable structure, and complete functions. Furthermore, the control of oil cleanliness, temperature, pressure, and flow rate in this test bench adopts advanced domestic standards.

[0036] Working principle: When testing the pump: the third switch valve 11 opens, the drive device 15 is connected to the pump under test 16 via the motor and pump conversion device 14, and the oil suction pipe of the oil tank 1 is connected to the pump under test 16 via the pump suction port conversion device 13. When testing different pumps, the motor and pump conversion device 14 and the pump suction port conversion device 13 of the corresponding size are replaced. The oil passes through the third switch valve 11 to the flexible joint 12 and enters the pump under test 16. The oil exiting the pump under test 16 passes through the second check valve 17, the high-pressure filter 22, the simulated load valve 23, and the first check valve 24 and returns to the oil tank 1. The overflow valve 20 is energized to establish system pressure and also serves a safety function. The pressure sensor 19 and the first pressure test connector 21 are used to detect the system pressure.

[0037] Waste oil filter device: When the motor pump unit 8 operates, it draws waste oil from the waste oil tank 10. The drawn oil passes through the suction filter 9 and enters the motor pump unit 8, then returns to the oil tank 1 from the pump outlet through the return filter 6. The second pressure test connector 7 is used to detect the pressure of the waste oil filter device system.

[0038] Cooling device: When the temperature controller 25 detects that the oil temperature in the oil tank 1 is too high, the first switch valve 5 and the second switch valve 3 open. The oil cooler 4 then starts operating. This oil cooler 4 has a built-in automatic temperature regulation system.

[0039] Oil tank 1 device: Level controller 2 is used to monitor the oil level in oil tank 1 and has alarm functions for excessively high and low oil levels. Temperature controller 25 is used for temperature alarm; when the temperature is high, it transmits a control signal to oil cooler 4, and oil cooler 4 starts. Air filter 26 is a vent, and oil drain valve 27 is an oil drain ball valve.

[0040] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pump testing system, characterized in that: It includes an oil tank, a drive unit, a pump under test, a motor and a pump conversion device, and a pump suction port conversion device. The motor and pump conversion device includes a transition plate, a connecting cover, and a coupling. The coupling is located inside the connecting cover and is connected to the drive unit and the pump under test respectively. The transition plate is located on the side of the connecting cover connected to the pump under test and is detachably connected to the connecting cover and the pump under test respectively. The oil suction conversion device includes a pipe and a first connecting end and a second connecting end located at both ends of the pipe. The first connecting end is connected to an oil tank, and the second connecting end is detachably connected to the pump under test. The oil outlet of the pump under test is connected to the oil tank.

2. The pump testing system according to claim 1, characterized in that: A simulated load valve is installed on the connecting pipeline between the oil outlet of the pump under test and the oil tank.

3. The pump testing system according to claim 2, characterized in that: A high-pressure filter and a pressure measuring device are provided between the simulated load valve and the oil outlet of the pump under test.

4. The pump testing system according to claim 3, characterized in that: An overflow channel is provided between the oil outlet of the pump under test and the oil tank. An overflow valve is provided on the overflow channel. The overflow channel is connected in parallel with the channel equipped with the simulated load valve.

5. The pump testing system according to claim 4, characterized in that: The oil outlet of the pump under test is also equipped with a one-way valve, and the flow direction of the one-way valve is from the pump under test to the oil tank.

6. The pump testing system according to claim 1, characterized in that: It also includes a cooling device for reducing oil temperature and a waste oil treatment device for treating waste oil. The cooling device includes an oil cooler, the inlet of which is connected to the oil tank via a first switching valve, and the outlet of which is connected to the oil tank.

7. The pump testing system according to claim 6, characterized in that: The outlet of the oil cooler is connected to the oil tank via a second switching valve.

8. The pump testing system according to claim 6, characterized in that: The waste oil treatment device includes a waste oil tank located below the pump under test. The waste oil tank is connected to the oil tank through an oil suction filter, an oil return filter, and a motor pump set.

9. The pump testing system according to claim 1, characterized in that: The first connection end of the oil suction conversion device is connected to the oil tank via a pipeline equipped with a third switching valve and a flexible joint.

10. The pump testing system according to any one of claims 1 to 9, characterized in that: The oil tank is also equipped with a temperature controller, a liquid level controller, an air filter, and an oil drain valve.

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