Pump motor test bench

Abstract

This application relates to a pump motor test bench, comprising: a frame, a built-in universal pump suitable for connection with the pump motor under test, and an oil supply system; the platform of the frame is provided with an oil pan, and the built-in universal pump extends through the oil pan into the cavity of the frame; the oil supply system is disposed inside the cavity of the frame; the oil supply system includes: a pressure tank, an oil delivery pipe, a pre-pump test pipe, a return oil pipe, and a post-pump test pipe; the outlet of the pressure tank is connected to the inlet of the oil delivery pipe, the outlet of the oil delivery pipe is connected to the inlet of the pre-pump test pipe, the outlet of the pre-pump test pipe is connected to the inlet of the post-pump test pipe through the built-in universal pump, the outlet of the post-pump test pipe is connected to the inlet of the return oil pipe, and the outlet of the return oil pipe is connected to the inlet of the pressure tank; the built-in universal pump is suitable for connection to the output end of the pump motor under test so that the pump motor under test drives the built-in universal pump to work.

Description

Technical Field

[0001] This application relates to the field of pump motor testing technology, and in particular to a pump motor testing bench. Background Technology

[0002] For pipelines of products such as military vehicles and spacecraft, pumps are almost always driven by motors to transport oil and liquids. If the pump motor cannot drive the pump properly, the equipment's oil supply system will be unable to transport oil to other systems.

[0003] This application proposes a pump motor test bench, which is suitable for testing whether the pump motor can drive the pump to work normally to achieve the oil transportation function before the pump motor is put into use. Summary of the Invention

[0004] In view of this, this application proposes a pump motor test bench.

[0005] According to one aspect of this application, a pump motor test bench is provided, comprising: a frame, a built-in universal pump suitable for connection with the pump motor to be tested, and an oil supply system;

[0006] The tabletop of the test bench is equipped with an oil pan, and a built-in universal pump extends through the oil pan into the cavity of the test bench.

[0007] The oil supply system is located inside the cavity of the test bench;

[0008] The oil supply system includes: a pressure tank, an oil delivery pipe, a pre-pump test pipe, a return oil pipe, and a post-pump test pipe; the outlet of the pressure tank is connected to the inlet of the oil delivery pipe, the outlet of the oil delivery pipe is connected to the inlet of the pre-pump test pipe, the outlet of the pre-pump test pipe is connected to the inlet of the post-pump test pipe via a built-in universal pump, the outlet of the post-pump test pipe is connected to the inlet of the return oil pipe, and the outlet of the return oil pipe is connected to the inlet of the pressure tank; the built-in universal pump is suitable for connecting to the output end of the motor of the pump under test so that the motor of the pump under test drives the built-in universal pump to work and drive the oil flow.

[0009] In one possible implementation, a filter is provided at the outlet of the pressure tank.

[0010] In one possible implementation, the oil pipeline is provided with a first pressure measuring pipe, one end of which is connected to the oil pipeline, and the other end of which is provided with a first pressure gauge.

[0011] In one possible implementation, it also includes: a first bypass pipe, a second bypass pipe, and a first four-way valve; one end of the first bypass pipe penetrates the platform and extends into the oil pan, and one end of the second bypass pipe penetrates the side wall of the platform; the other ends of the first bypass pipe, the other ends of the second bypass pipe, and the inlet of the pre-pump test pipe are all connected to the outlet of the oil delivery pipe through the first four-way valve.

[0012] In one possible implementation, the return oil pipe is provided with a second pressure testing pipe, one end of which is connected to the return oil pipe, and the other end of which is provided with a second pressure gauge.

[0013] In one possible implementation, it also includes: a third bypass pipe, a fourth bypass pipe, and a second four-way valve; one end of the third bypass pipe penetrates the platform and extends into the oil pan, and one end of the fourth bypass pipe penetrates the side wall of the platform; the other ends of the third bypass pipe, the other ends of the fourth bypass pipe, and the outlet of the post-pump test pipe are all connected to the inlet of the return oil pipe through the second four-way valve.

[0014] In one possible implementation, a flow regulating valve is provided on the return oil pipe.

[0015] In one possible implementation, a flow meter is installed on the return oil pipe.

[0016] In one possible implementation, the platform includes: a frame and an outer shell; the outer shell is fastened to the frame.

[0017] In one possible implementation, a main control board is also included, which is suitable for connecting to the pump motor under test. The main control board is located inside the cavity of the test bench and is suitable for controlling the operation of the pump motor under test.

[0018] Beneficial effects: The test bench provides a testing space for the pump motor under test and isolates and protects the internal oil supply system to prevent external environmental interference with the normal testing process. The pressure tank of the oil supply system is suitable for storing oil, and the built-in universal pump can be installed and connected to various pump motors under test. The pump motor under test drives the built-in universal pump, which provides power for the flow of liquid, allowing the oil in the pressure tank to flow smoothly into the oil delivery pipe, the pre-pump test pipe, the post-pump test pipe, and the return pipe. Therefore, the liquid pressure or flow rate in the oil delivery pipe and the return pipe can be used to determine whether the pump motor under test can drive the built-in universal pump normally.

[0019] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0021] Figure 1 An exploded view of the pump motor test bench according to an embodiment of this application is shown;

[0022] Figure 2 This diagram shows the main structure of the pump motor test bench according to an embodiment of this application;

[0023] Figure 3 This diagram shows the main structure of the pump motor test bench according to an embodiment of this application;

[0024] Figure 4 An internal view of the pump motor test bench according to an embodiment of this application is shown;

[0025] Figure 5 A partial structural diagram of the pump motor test bench according to an embodiment of this application is shown;

[0026] Figure 6 This diagram illustrates the main structural structure of the tabletop according to an embodiment of this application.

[0027] Figure 7 A partial structural diagram of the pump motor test bench according to an embodiment of this application is shown;

[0028] Figure 8 This diagram illustrates the main structure of the oil pan according to an embodiment of this application.

[0029] Figure 9 The bottom view of the pump motor test bench according to an embodiment of this application is shown;

[0030] Figure 10 This diagram shows the main structure of the oil supply system according to an embodiment of this application;

[0031] Figure 11 This diagram shows the main structure of the oil supply system according to an embodiment of this application;

[0032] Figure 12 This diagram shows the main structure of the oil supply system according to an embodiment of this application;

[0033] Figure 13 A partial structural diagram of the oil supply system according to an embodiment of this application is shown;

[0034] Figure 14 A partial structural diagram of the oil supply system according to an embodiment of this application is shown;

[0035] Figure 15 A partial structural diagram of the oil supply system according to an embodiment of this application is shown;

[0036] Figure 16 A partial structural diagram of the oil supply system according to an embodiment of this application is shown.

[0037] Figure 17 A partial structural diagram of the pump motor test bench according to an embodiment of this application is shown;

[0038] Figure 18 This diagram shows the main structural features of the frame according to an embodiment of this application.

[0039] Figure 19 This diagram shows the main structure of the pump motor test bench according to an embodiment of this application;

[0040] Figure 20 This diagram shows the main structure of the pump motor test bench according to an embodiment of this application. Detailed Implementation

[0041] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0042] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0045] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0046] like Figure 1As shown, a pump motor test bench includes: a frame, a built-in universal pump 200 suitable for connection with the pump motor under test, and an oil supply system 300; the platform 140 of the frame is provided with an oil pan 700, and the built-in universal pump 200 extends into the cavity of the frame through the oil pan 700; the oil supply system 300 is disposed inside the cavity of the frame; the oil supply system 300 includes: a pressure tank 310, an oil delivery pipe 320, a pre-pump test pipe 330, a return oil pipe 350, and a post-pump test pipe 340; the pressure tank 310 has an outlet... The outlet is connected to the inlet of the oil supply pipe 320, the outlet of the oil supply pipe 320 is connected to the inlet of the pre-pump test pipe 330, the outlet of the pre-pump test pipe 330 is connected to the inlet of the post-pump test pipe 340 through the built-in universal pump 200, the outlet of the post-pump test pipe 340 is connected to the inlet of the return oil pipe 350, and the outlet of the return oil pipe 350 is connected to the inlet of the pressure tank 310; the built-in universal pump 200 is suitable for connecting to the output end of the motor of the pump under test so that the motor of the pump under test can drive the built-in universal pump 200 to work.

[0047] It should be noted that the test bench is designed to provide a testing space for pump motor testing and to isolate and protect the internal oil supply system 300 from external environmental interference with the normal testing process. The pressure tank 310 of the oil supply system 300 is used to store oil. The built-in universal pump 200 can be connected to various pump motors under test. The pump motor under test drives the built-in universal pump 200, which provides power for the flow of liquid, allowing the oil in the pressure tank 310 to flow smoothly into the oil delivery pipe 320, the pre-pump test pipe 330, the post-pump test pipe 340, and the return oil pipe 350, and finally flow back to the pressure tank 310. Therefore, the pump motor's ability to drive the built-in universal pump 200 normally can be determined based on the liquid pressure or flow rate in the oil delivery pipe 320 and the return oil pipe 350.

[0048] In one possible implementation, such as Figure 11 As shown, the bottom of the pressure tank 310 is provided with two or more support legs 313, which are suitable for supporting the pressure tank 310.

[0049] In one possible implementation, a filter 311 is provided at the outlet of the pressure tank 310. For example... Figure 12 As shown, filter 311 is a Lansbury filter 311. The inlet end of filter 311 is connected to the outlet of pressure tank 310, and the outlet end of filter 311 is connected to the inlet of oil pipeline 320 through tee 312. Filter 311 is suitable for filtering oil flowing into oil pipeline 320 to prevent impurities and dirt from entering the built-in universal pump 200 and interfering with the normal operation of the built-in universal pump 200, thus ensuring that the equipment can be tested normally.

[0050] In one possible implementation, the oil pipeline 320 is provided with a first pressure testing pipe 321, one end of which is connected to the oil pipeline 320, and the other end of which is provided with a first pressure gauge 322. For example... Figure 12 As shown, the first pressure measuring pipe 321, the oil supply pipe 320, and the filter 311 are connected by a tee 312. The first pressure gauge 322 is used to detect the oil pressure in the oil supply pipe 320 before the pump and display the data.

[0051] In one possible implementation, it further includes: a first bypass pipe 390, a second bypass pipe 360, and a first four-way valve 910; one end of the first bypass pipe 390 penetrates the platform 140 and extends into the oil pan 700, and one end of the second bypass pipe 360 ​​penetrates the side wall of the platform and extends outward; the other ends of the first bypass pipe 390, the other ends of the second bypass pipe 360, and the inlet of the pre-pump test pipe 330 are all connected to the outlet of the oil delivery pipe 320 through the first four-way valve 910. Figure 12 As shown, the main body of the first bypass pipe 390 has a U-shaped structure. The inlet of the first bypass pipe 390 is connected to one end of the first four-way valve 910. The inlet of the second bypass pipe 360 ​​is connected to one end of the first four-way valve 910. The outlet of the oil delivery pipe 320 is connected to one end of the first four-way valve 910. The inlet of the pre-pump test pipe 330 is connected to one end of the first four-way valve 910. When testing is required, the oil delivery pipe 320 is connected to the pre-pump test pipe 330 by operating the first four-way valve 910, and the oil can flow from the oil delivery pipe 320 into the pre-pump test pipe 330.

[0052] In one possible implementation, such as Figure 14 As shown, the return oil pipe 350 is equipped with a second pressure testing pipe 351. One end of the second pressure testing pipe 351 is connected to the return oil pipe 350, and the other end of the second pressure testing pipe 351 is equipped with a second pressure gauge 352. It should be noted that the second pressure testing pipe 351 is connected to the return oil pipe 350 via a tee 356, and the second pressure gauge 352 is used to detect the oil pressure in the return oil pipe 350 after the pump and display the data.

[0053] In one possible implementation, such as Figure 13As shown, it also includes: a third bypass pipe 370, a fourth bypass pipe 380 and a second four-way valve 920; one end of the third bypass pipe 370 penetrates the platform 140 and extends into the oil pan 700, and one end of the fourth bypass pipe 380 penetrates the side wall of the platform and extends outward; the other ends of the third bypass pipe 370, the other ends of the fourth bypass pipe 380, and the outlet of the post-pump test pipe 340 are all connected to the inlet of the return oil pipe 350 through the second four-way valve 920. The main body of the third bypass pipe 370 has a U-shaped structure. The outlet of the third bypass pipe is connected to one end of the second four-way valve 920. The outlet of the fourth bypass pipe 380 is connected to one end of the second four-way valve 920. The outlet of the post-pump test pipe 340 is connected to one end of the second four-way valve 920. The inlet of the return oil pipe 350 is connected to one end of the second four-way valve 920. When testing is required, the post-pump test pipe 340 is connected to the return oil pipe 350 by operating the second four-way valve 920. The oil can flow back to the pressure tank 310 from the return oil pipe 350.

[0054] In one possible implementation, the built-in general-purpose pump 200 is designated as MPB060.

[0055] It should be noted that, due to the wide variety of types and models of pump motors to be tested, some special pump motors can only be used to drive fixed models of pumps and cannot be used with the built-in universal pump 200 in the mounting frame. In order to enable the testing of various pump motors to be tested, this application provides a first bypass pipe 390, a second bypass pipe 360, a third bypass pipe 370, and a fourth bypass pipe 380 to connect to other extended types of pumps. By controlling the first four-way valve 910, the outlet of the oil supply pipe 320 is connected to the inlet of the first bypass pipe 390, allowing oil to flow from the oil supply pipe 320 into the first bypass pipe 390. Simultaneously, by controlling the second four-way valve 920, the outlet of the third bypass pipe 370 is connected to the inlet of the return pipe 350, allowing oil to flow from the third bypass pipe 370 into the return pipe 350. The outlet of the first bypass pipe 390 and the inlet of the third bypass pipe 370 can be connected to other special types of pumps. When the test pump motor is working, it drives the pump to work. The oil flows sequentially through the oil supply pipe 320, the first bypass pipe 390, the pump, the third bypass pipe 370, and the return pipe 350, finally flowing back to the pressure tank 310.

[0056] It should also be noted that, due to the varying weights and sizes of the pump motors under test, some heavy pump motors are difficult to transport to the test bench. Therefore, this application provides a second bypass pipe 360 ​​and a fourth bypass pipe 380. By controlling the second four-way valve 920, the outlet of the oil supply pipe 320 is connected to the inlet of the second bypass pipe 360, allowing oil to flow from the oil supply pipe 320 into the second bypass pipe 360. Simultaneously, by controlling the second four-way valve 920, the outlet of the fourth bypass pipe 380 is connected to the inlet of the return pipe 350, allowing oil to flow from the fourth bypass pipe 380 into the return pipe 350. The outlet of the second bypass pipe 360 ​​and the inlet of the fourth bypass pipe 380 can be connected to other pumps outside the test bench. When the heavy pump motor under test is working, it drives the pump to work, and the oil flows sequentially through the oil supply pipe 320, the second bypass pipe 360, the pump, the fourth bypass pipe 380, and the return pipe 350, finally flowing back to the pressure tank 310.

[0057] In one possible implementation, the return oil pipe 350 is equipped with a flow regulating valve 353, which is suitable for regulating the oil flow and pressure in the return oil pipe 350, thereby detecting the working capacity of the pump motor under different operating conditions.

[0058] In one possible implementation, such as Figure 14 As shown, the return oil pipe 350 is equipped with a Y-shaped filter 355; it is suitable for removing impurities in the oil and preventing impurities and dirt from entering the pressure tank 310 through the return oil pipe 350.

[0059] In one possible implementation, a flow meter 354 is provided on the return oil pipe 350, which is suitable for detecting the oil flow rate in the return oil pipe 350 and displaying the data.

[0060] Furthermore, the flow regulating valve 353, the Y-shaped filter 355, and the flow meter 354 are arranged sequentially along the flow direction of the oil in the return oil pipe 350.

[0061] In one possible implementation, the platform includes: a frame 110 and a housing; the housing is fastened to the frame 110. For example... Figure 18 As shown, the frame 110 is assembled from multiple steel structures, and the multiple steel structures are connected by corner brackets; the outer shell covers each surface of the frame 110 to isolate the internal space of the frame 110.

[0062] The outer shell includes: a cuboid upper cover 121, a rectangular lower front panel 124, two side panels 120, a tabletop 140, and a bottom plate 122; the upper cover 121 is fastened to the upper part of the frame 110; the lower front panel 124 covers the lower front part of the frame 110, and the tabletop 140 is located between the upper cover 121 and the lower front panel 124; the two side panels 120 cover the opposite sides of the frame 110 respectively, the rear panel 125 covers the lower rear side of the frame 110, and the bottom plate 122 covers the bottom of the frame 110.

[0063] Furthermore, such as Figure 1 As shown, the upper cover 121 is provided with three display holes, which are respectively opposite to the first pressure gauge 322, the second pressure gauge 352, and the flow meter 354; the first pressure gauge 322, the second pressure gauge 352 and the flow meter 354 are respectively displayed outward through the three display holes.

[0064] In one possible implementation, the table frame includes a drawer 147; the drawer 147 is located within the tabletop 140 and is suitable for storing office supplies. For example... Figure 6 As shown, a drawer hole 144 is provided on the front side of the countertop 140, and a drawer 147 is installed in the drawer hole 144.

[0065] like Figure 6 As shown, the top of the work surface 140 is provided with an oil pan opening 141, and the oil pan 700 is placed inside the oil pan opening 141. The work surface 140 can support the oil pan 700. The top of the work surface 140 is provided with a flow regulating valve clearance hole 142. The flow regulating valve 353 protrudes above the work surface 140 through the flow regulating valve clearance hole 142, making it easy for the operator to operate the flow regulating valve 353 at any time. The top of the work surface 140 is provided with a first valve clearance hole 145, which is suitable for clearance of the first four-way valve 910. The top of the work surface 140 is provided with a second valve clearance hole 146, which is suitable for clearance of the second four-way valve 920, making it convenient for the operator to operate the first four-way valve 910 and the second four-way valve 920 at any time.

[0066] In one possible implementation, such as Figure 8 As shown, the oil pan 700 has a rectangular first clearance hole 710, which is suitable for making way for the reducer of the built-in general-purpose pump 200. The oil pan 700 has a second clearance hole 720 on both sides, which is suitable for making way for the first bypass pipe 390, and a third clearance hole 730, which is suitable for making way for the third bypass pipe 370. This allows the first bypass pipe 390 and the third bypass pipe 370 to extend into the oil pan 700 and connect to other types of pumps placed in the oil pan 700.

[0067] In one possible implementation, the bottom of the platform is provided with four casters 123, which improve the ease of movement of the platform. Preferably, the mounting plates of the four casters 123 are fixedly connected to the bottom of the platform by bolts.

[0068] In one possible implementation, the cavity of the test bench is equipped with an isolation plate 130, the plane of which is parallel to the horizontal plane, and the top of the isolation plate 130 is suitable for placing the main control board 400, the low-voltage power supply 600, and the host 500. Figure 5 As shown, the main body of the isolation plate 130 is a rectangular plate structure; the isolation plate 130 is fixedly connected to the frame 110 on all four sides.

[0069] In one possible implementation, a host 500 for electrical connection with the pump motor under test is also included. The host 500 is disposed inside the cavity of the test bench and positioned above the isolation plate 130. The host 500 is used to record test information, support the operation of the test system, process test data, and export test reports. A main control board 400 is disposed inside the cavity of the test bench and is positioned adjacent to the host 500.

[0070] In one possible implementation, a display screen 510 is also included, which is embedded in the upper cover 121; the host 500 is electrically connected to the display screen 510 so that the display screen 510 displays relevant data.

[0071] Furthermore, the main control board 400 receives start or stop command signals through its communication interface and outputs control signals to the host 500; the host 500 is bidirectionally electrically connected to the communication port of the pump motor under test, and the pump motor under test starts and stops according to the drive signal of the main control board 400; at the same time, the pump motor under test feeds back signals such as speed and angle to the host 500, which is used to monitor the relevant data of the pump motor under test during operation and display the data on the display screen 510. The staff can obtain the operating status of the pump motor under test and determine whether there are any faults or defects.

[0072] In one possible implementation, such as Figure 5 As shown, it also includes two or more supports 131. The main unit 500 is connected to the isolation plate 130 through the supports 131. The main body of the support 131 is an L-shaped plate structure. One side of the support 131 is fixedly connected to the isolation plate 130, and the other side of the support 131 contacts the main unit 500. Furthermore, there are two supports 131, which are respectively located on adjacent sides of the main unit 500. Under the limiting effect of multiple supports 131, the main unit 500 can be stably placed on the isolation plate 130.

[0073] In one possible implementation, such as Figure 4As shown, it also includes: a low-voltage power supply 600; the low-voltage power supply 600 is located inside the cavity of the test bench and is installed above the isolation plate 130. The low-voltage power supply 600 is arranged adjacent to the main control board 400 and is electrically connected to the main control board 400 to provide 24V working power to the main control board 400.

[0074] In one possible implementation, the upper cover 121 is provided with a device switch button 810, and an external 220V power supply is electrically connected to the host 500 and the display screen 510, thereby providing working power to the host 500 and the display screen 510; the switch button 810 is electrically connected between the external 220V power supply and the host 500 and the display screen 510, and the host 500 and the display screen 510 are powered on after the switch button 810 is powered on.

[0075] In one possible implementation, the upper cover 121 is provided with a host switch button 820, which is electrically connected to the host 500 to start or stop the host 500.

[0076] In one possible implementation, the upper cover 121 is provided with an SCI button 830, which is mainly used to provide a program writing switch for the main control board 400 device.

[0077] In one possible implementation, the upper cover 121 is provided with a 24V power supply button 840, which is electrically connected to the circuit between the low-voltage power supply 600 and the main control board 400. The 24V power supply button 840 is used to control the on / off of the low-voltage power supply 600 supplying power to the main control board 400.

[0078] In one possible implementation, the upper cover 121 is provided with a high-voltage power supply button 850, which is electrically connected to the circuit between the external high-voltage power supply and the pump motor under test. The external high-voltage power supply supports voltages from 50V to 900V. The high-voltage power supply button 850 is used to control the on / off state of the external high-voltage power supply supplying power to the pump motor under test.

[0079] In one possible implementation, the upper cover 121 is provided with four USB ports 860; one end of each USB port 860 is electrically connected to the host 500, and the other end of each USB port 860 is suitable for electrical connection to external devices such as keyboards and mice, so that external devices such as keyboards and mice can be connected to the host 500 through the USB ports 860.

[0080] In one possible implementation, the upper cover 121 is provided with a CAN connector 870; a laptop computer or the like can be electrically connected to the host 500 via the CAN connector 870.

[0081] In one possible implementation, the upper housing 121 is provided with a debugging aviation connector 880; one end of the debugging aviation connector 880 is connected to the host 500, and the other end of the debugging aviation connector 880 is adapted to connect to the communication port of the external pump motor to be tested, so as to realize bidirectional electrical connection between the host 500 and the communication port of the pump motor to be tested.

[0082] In one possible implementation, a temperature sensor is also included, with its probe located inside the pressure tank 310, and a temperature display screen 800 of the temperature sensor mounted on the upper cover 121 and displayed outwards; the temperature sensor is suitable for measuring the oil temperature inside the pressure tank 310 and uploading the data to the temperature display screen 800 to display the oil temperature.

[0083] In one possible implementation, an emergency stop button 890 is provided on the upper cover 121; the relay 410 of the external high-voltage power supply is placed on the isolation plate 130 and located below the main control board 400. One end of the relay 410 is connected to the external high-voltage power supply through the first positive and negative terminal block 412, and the other end of the relay 410 is connected to the pump motor under test through the second positive and negative terminal block 411. The emergency stop button 890 is electrically connected to the relay 410. Pressing the emergency stop button 890 can disconnect the relay 410 in an emergency, thereby cutting off the high-voltage power supply and protecting the equipment and personal safety.

[0084] The testing process for this application is described below:

[0085] (1) Press the switch button 810, the main switch button 820, the 24V power supply button 840, and the high voltage power supply button 850 to power on each device;

[0086] (2) The oil delivery pipe 320 is connected to the pre-pump test pipe 330 through the first four-way valve 910, and the post-pump test pipe 340 is connected to the return oil pipe 350 through the second four-way valve 920.

[0087] (3) Connect the motor of the pump to be tested to the built-in universal pump 200;

[0088] (4) Turn on the air pump 314 of the pressure tank 310 to provide initial pressure to the pressure tank 310;

[0089] (5) Start the motor of the pump to be tested;

[0090] (6) During the test, the pressure value of the built-in universal pump 200 is adjusted by adjusting the flow regulating valve 353, so as to test the performance of the pump motor under different load conditions;

[0091] (7) Determine whether the pump motor under test can drive the built-in universal pump 200 normally based on the pressure value of the first pressure gauge 322, the pressure value of the second pressure gauge 352, and the flow value of the flow meter 354, and determine the performance of the pump motor under test by using the speed angle data of the pump motor under test displayed on the display screen 510.

[0092] (8) After the test is completed, turn off the air pump 314; turn off all buttons to complete the test.

[0093] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pump motor test stand, characterized by, include: Test bench, oil supply system, and built-in universal pump suitable for connection with the motor of the pump under test; The platform is equipped with an oil pan, and the built-in universal pump extends through the oil pan into the cavity of the platform. The oil supply system is located inside the cavity of the test bench; The oil supply system includes: a pressure tank, an oil delivery pipe, a pre-pump test pipe, a return oil pipe, and a post-pump test pipe; The outlet of the pressure tank is connected to the inlet of the oil delivery pipe, the outlet of the oil delivery pipe is connected to the inlet of the pre-pump test pipe, the outlet of the pre-pump test pipe is connected to the inlet of the post-pump test pipe via the built-in universal pump, the outlet of the post-pump test pipe is connected to the inlet of the return oil pipe, and the outlet of the return oil pipe is connected to the inlet of the pressure tank. The built-in universal pump is suitable for connection to the output end of the motor of the pump under test so that the motor of the pump under test drives the built-in universal pump to work and drives the oil flow through the built-in universal pump.

2. The pump motor test stand of claim 1, wherein, A filter is installed at the outlet of the pressure tank.

3. The pump motor test stand of claim 1, wherein, The oil pipeline is equipped with a first pressure measuring pipe, one end of which is connected to the oil pipeline, and the other end of which is equipped with a first pressure gauge.

4. The pump motor test stand of claim 2, wherein, Also includes: A first bypass pipe, a second bypass pipe, and a first four-way valve; one end of the first bypass pipe penetrates the platform and extends into the oil pan, and one end of the second bypass pipe penetrates the side wall of the platform; the other ends of the first bypass pipe, the other ends of the second bypass pipe, and the inlet of the pre-pump test pipe are all connected to the outlet of the oil delivery pipe through the first four-way valve.

5. The pump motor test stand of claim 2, wherein, The return oil pipe is equipped with a second pressure testing pipe, one end of which is connected to the return oil pipe, and the other end of which is equipped with a second pressure gauge.

6. The pump motor test stand of claim 4, wherein, Also includes: The third bypass pipe, the fourth bypass pipe, and the second four-way valve; one end of the third bypass pipe penetrates the platform and extends into the oil basin, and one end of the fourth bypass pipe penetrates the side wall of the platform; the other ends of the third bypass pipe, the other ends of the fourth bypass pipe, and the outlet of the post-pump test pipe are all connected to the inlet of the return oil pipe through the second four-way valve.

7. The pump motor test stand of claim 1, wherein, The return oil pipe is equipped with a flow regulating valve.

8. The pump motor test stand of claim 1, wherein, A flow meter is installed on the return oil pipe.

9. The pump motor test stand of claim 2, wherein, The platform includes a frame and an outer shell; the outer shell is fastened to the frame.

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