A water pump performance testing device

Abstract

This application relates to the field of water pump performance testing equipment, and more particularly to a water pump performance testing device, including a water tank with a testing port at the top. A water pump to be tested is placed at the testing port. A support for the water pump is provided on the water tank. A testing tube is located at the top of the water tank, and a flow meter and a pressure gauge are mounted on the testing tube. Both the flow meter and pressure gauge are electrically connected to a control system. One end of the testing tube is near the testing port and used to insert into the outlet end of the water pump, while the other end extends into the interior of the water tank. A locking element and a sealing assembly are provided on the water tank. The locking element is used to stably fix the outlet end of the water pump onto the testing tube, and the sealing assembly is used to seal the outlet end of the water pump with the testing tube. This application has the effect of improving the efficiency of water pump performance testing.

Description

Technical Field

[0001] This application relates to the field of water pump performance testing equipment, and in particular to a water pump performance testing device. Background Technology

[0002] A water pump is a mechanical device that converts the mechanical energy of a prime mover (such as an electric motor or diesel engine) into the kinetic or pressure energy of a liquid. It is primarily used for transporting liquids, but can also handle mixtures containing suspended solids or gas-liquid mixtures. Its core function is to achieve directional flow or pressure increase of liquids through energy conversion, and it is widely used in agricultural irrigation, industrial circulation, and municipal water supply and drainage.

[0003] Before leaving the factory, multistage water pumps need to undergo various performance tests, including pressure resistance, vibration noise, and sealing performance. During these tests, workers typically connect the pump's outlet to the pipeline using flanges, bolts, and nuts. After testing, these bolts and nuts need to be removed. However, factory production often involves large-scale pump performance testing, and the frequent installation and removal of bolts and nuts consumes a significant amount of time, greatly reducing testing efficiency and increasing worker workload. This process is therefore inefficient. Summary of the Invention To address the time-consuming and labor-intensive process of disassembling a water pump during performance testing, this application provides a water pump performance testing device.

[0004] The water pump performance testing device provided in this application adopts the following technical solution: A water pump performance testing device includes a water tank with a testing port at the top. A water pump to be tested is placed at the testing port. A support for the water pump is provided on the water tank. A testing tube is provided on the top of the water tank, and a flow meter and a pressure gauge are provided on the testing tube. Both the flow meter and the pressure gauge are electrically connected to a control system. One end of the testing tube is close to the testing port and is used to insert into the outlet end of the water pump, while the other end extends into the interior of the water tank. A locking component and a sealing assembly are provided on the water tank. The locking component is used to stably fix the outlet end of the water pump on the testing tube, and the sealing assembly is used to seal the outlet end of the water pump with the testing tube.

[0005] By adopting the above technical solution, the worker first supports the water pump at the test port of the water tank using a support, so that the water inlet at the bottom of the water pump is below the liquid level in the water tank. Then, the outlet of the water pump is fitted onto the test tube. After that, the outlet of the water pump is stably fixed on the test tube using a locking device. Finally, a sealing component is used to seal the outlet of the water pump and the test tube. When the worker powers on the water pump, the water pump draws water from the water tank to the test tube, and then flows back to the water tank through the test tube. During this process, the flow meter and pressure gauge provide feedback on the corresponding performance index of the water pump to the control system. This process does not require the worker to tighten bolts and nuts, which greatly shortens the time spent on water pump installation and helps to improve the testing efficiency of the water pump.

[0006] Optionally, the support includes a bidirectional screw rotatably mounted on the top of the water tank, with support rods threaded to both ends of the bidirectional screw. A guide rod parallel to the axis of the bidirectional screw is provided on the top of the water tank. The bidirectional screw and the guide rod are located on opposite sides of the detection port. The support rod is slidably sleeved on the guide rod. An adjustable-distance motor electrically connected to the control system is provided on the top of the water tank. The bidirectional screw is coaxially mounted on the output shaft of the adjustable-distance motor. The water pump is located between the two support rods. Multiple pads are detachably mounted on the support rods. The multiple pads are stacked vertically. The flange on the water pump is placed on the pads.

[0007] By adopting the above technical solution, the workers first adjust the number of layers of the gasket according to the size between the flange on the water pump and the outlet end of the water pump. Then, the control system starts the pitch motor. The output shaft of the pitch motor drives the bidirectional screw to rotate, and under the guiding and limiting action of the guide rod, the two support rods move closer or further apart, thereby adapting to water pumps of different sizes.

[0008] Optionally, multiple detection ports are provided on the water pump.

[0009] By adopting the above technical solution, the performance of multiple water pumps can be tested simultaneously, which helps to reduce the area occupied by the testing environment.

[0010] Optionally, the locking component includes a mounting plate disposed on the water tank, the mounting plate being located on the side of the water pump facing away from the detection tube, a retaining ring plate being disposed on the detection tube, a locking cylinder electrically connected to the control system being disposed on the mounting plate, a C-shaped abutment being disposed on the piston rod of the locking cylinder, and a pressure sensor electrically connected to the control system being disposed between the piston rod of the locking cylinder and the abutment, when the abutment pushes the water pump and remains stationary, the outlet end of the water pump abuts against the retaining ring plate.

[0011] By adopting the above technical solution, the control system starts the locking cylinder, the piston rod of the locking cylinder extends, and the piston rod of the locking cylinder pushes the abutment block to drive the water pump, so that the liquid outlet end of the water pump is sleeved on the end of the detection tube and abuts against the baffle plate. Meanwhile, the pressure sensor constantly provides feedback on the squeezing force of the locking cylinder on the water pump, which makes it convenient for workers to control the locking effect of the water pump.

[0012] Optionally, the sealing assembly includes a rubber sleeve fitted onto the end of the detection tube, an inner sleeve threaded to the inner side of the end of the detection tube, a pressure ring coaxially disposed at the end of the inner sleeve near the water pump, the pressure ring being used to press the end of the rubber sleeve near the water pump onto the end of the detection tube, a pressure edge ring plate bolted to the retaining ring plate, the pressure edge ring plate being used to press the end of the rubber sleeve away from the water pump onto the retaining ring plate, the outlet end of the water pump abutting against the rubber sleeve, a sealed chamber being formed between the inner side of the rubber sleeve and the outer side of the detection tube, and a pressurizing element for pressurizing the sealed chamber being disposed on the detection tube.

[0013] By adopting the above technical solution, when the outlet end of the water pump abuts against the rubber sleeve, the rubber sleeve achieves a preliminary sealing effect between the outlet end of the water pump and the detection tube under the action of the baffle plate. At the same time, it can adapt to the outlet end of water pumps of different sizes. During the performance testing of the water pump, the pressurizing component pressurizes the sealing chamber, causing the rubber sleeve to deform and expand. The expanded rubber sleeve will adhere to the inner wall of the outlet end of the water pump, thereby achieving a complete seal between the outlet end of the water pump and the detection tube. When the output power of the water pump is changed, the pressure sensor will feed back the vibration frequency parameter of the water pump during operation to the control system, the pressure gauge will feed back the liquid pressure value output by the water pump to the control system, and the flow meter will feed back the liquid flow rate value output by the water pump to the control system. In this way, various performance parameters of the water pump can be obtained. At the same time, workers can see whether the water pump is leaking by whether the various parameters change abruptly.

[0014] Optionally, the pressurizing component includes a liquid flow hole opened between the inner and outer walls of the detection tube, the liquid flow hole being located between the inner sleeve and the baffle plate, and the liquid flow hole communicating with the sealing chamber.

[0015] By adopting the above technical solution, when the water pump is working, the water pumped out by the water pump will enter the sealed chamber through the liquid flow hole, thereby causing the rubber sleeve to expand and deform, thus achieving the sealing effect between the inner wall of the water pump outlet end and the outer wall of the detection tube.

[0016] Optionally, the pressurizing component includes a pressure chamber shell coaxially sleeved on the detection tube. The pressure chamber shell is located on the side of the retaining ring plate facing away from the rubber sleeve. The interior of the pressure chamber shell is hollow and open on the side facing the retaining ring plate. A pressure channel is provided on the retaining ring plate to connect the interior of the pressure chamber shell with the sealing chamber. A bracket is provided on the water tank. A pressure cylinder electrically connected to the control system is provided on the bracket. A hollow pressure cylinder with an open top is provided below the bracket. A flexible hose is connected between the bottom of the pressure cylinder and the pressure chamber shell. A pressure plate is slidably arranged inside the pressure cylinder. A sealing ring is provided between the outer circumferential wall of the pressure plate and the inner circumferential wall of the pressure cylinder. The pressure plate is coaxially arranged on the piston rod of the pressure cylinder.

[0017] By adopting the above technical solution, the control system starts the pressure cylinder, the piston rod of the pressure cylinder extends, and the piston rod of the pressure cylinder drives the pressure plate to squeeze the liquid in the pressure cylinder. The liquid in the pressure cylinder flows through the hose to the pressure chamber shell, and then flows through the pressure channel to the sealed chamber, thereby causing the rubber sleeve to expand and deform, thus achieving the sealing effect between the inner wall of the water pump outlet and the outer wall of the detection tube.

[0018] Optionally, the water tank is provided with a protective cover, and the locking cylinder is located inside the protective cover.

[0019] By adopting the above technical solution, the possibility of damage to the locking cylinder during the installation of the water pump is reduced.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. The worker first supports the water pump at the test port of the water tank using the support components, so that the water inlet end of the water pump is below the liquid level in the water tank. Then, the water outlet end of the water pump is fitted onto the test tube. After that, the water outlet end of the water pump is stably fixed on the test tube using the locking components. Finally, the sealing components are used to seal the water outlet end of the water pump and the test tube. When the worker powers on the water pump, the water pump draws water from the water tank to the test tube, and then flows back to the water tank through the test tube. During this process, the flow meter and pressure gauge feed back the corresponding performance index of the water pump to the control system. This process does not require the worker to tighten bolts and nuts, which greatly shortens the time spent on water pump installation and helps to improve the testing efficiency of the water pump. 2. The control system starts the locking cylinder. The piston rod of the locking cylinder extends and pushes the abutment to drive the water pump, so that the outlet end of the water pump is sleeved on the end of the detection tube and abuts against the baffle plate. The pressure sensor constantly provides feedback on the squeezing force of the locking cylinder on the water pump, which makes it convenient for workers to control the locking effect of the water pump. 3. When the water pump's outlet end abuts against the rubber sleeve, the rubber sleeve, under the action of the baffle plate, achieves a preliminary seal between the water pump's outlet end and the detection tube. It can also accommodate water pumps of different sizes. During the water pump's performance testing, the pressurizing component pressurizes the sealing chamber, causing the rubber sleeve to deform and expand. The expanded rubber sleeve adheres to the inner wall of the water pump's outlet end, thus achieving a complete seal between the water pump's outlet end and the detection tube. When the water pump's output power is changed, the pressure sensor feeds back the vibration frequency parameter of the pump to the control system, the pressure gauge feeds back the liquid pressure value output by the pump to the control system, and the flow meter feeds back the liquid flow rate value output by the pump to the control system. This allows the system to obtain various performance parameters of the water pump. Furthermore, workers can detect whether the water pump is leaking by observing sudden changes in these parameters. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0022] Figure 2 This is a cross-sectional view in Embodiment 1 of this application used to illustrate the positional relationship between the water pump, the locking cylinder, and the detection tube.

[0023] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0024] Figure 4 This is a structural schematic diagram of Embodiment 2 of this application, used to illustrate the positional relationship between the support, pressure cylinder, and pressure cylinder.

[0025] Figure 5 This is a cross-sectional view in Embodiment 2 of this application used to illustrate the positional relationship between the pressure chamber shell, the rubber sleeve, and the pressure ring.

[0026] Explanation of reference numerals in the attached drawings: 1. Water tank; 2. Detection port; 3. Water pump; 4. Support component; 41. Bidirectional screw; 42. Support rod; 43. Guide rod; 44. Adjustable pitch motor; 45. Pad plate; 5. Detection tube; 6. Flow meter; 7. Pressure gauge; 8. Locking component; 81. Mounting plate; 82. Baffle plate; 83. Locking cylinder; 84. Abutment block; 85. Pressure sensor; 9. Sealing assembly; 91. Rubber sleeve; 92. Inner sleeve; 93. Pressure ring; 94. Pressure edge ring plate; 95. Sealing chamber; 10. Pressurizing component; 101. Liquid flow hole; 102. Pressure chamber shell; 103. Pressure channel; 104. Bracket; 105. Pressure cylinder; 106. Pressure cylinder; 107. Hoose; 108. Pressure plate; 109. Sealing ring; 11. Protective cover. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-5This application will be described in further detail.

[0028] This application discloses a water pump performance testing device.

[0029] Example 1 Reference Figure 1 A water pump performance testing device includes a water tank 1, with multiple testing ports 2 on the top of the water tank 1. A water pump 3 to be tested is placed at the testing ports 2 of the water tank 1. The water inlet end of the water pump 3 is located below the liquid level in the water tank 1. A support member 4 for supporting the water pump 3 is arranged on the water tank 1.

[0030] Reference Figure 1 and Figure 2 The support member 4 includes a bidirectional screw 41 rotatably connected to the top of the water tank 1. Both ends of the bidirectional screw 41 are threaded with support rods 42. The top of the water tank 1 is bolted with a guide rod 43 whose axis is parallel to the axis of the bidirectional screw 41. The bidirectional screw 41 and the guide rod 43 are located on both sides of the detection port 2 along the axis of the guide rod 43, and the support rod 42 is slidably sleeved on the guide rod 43.

[0031] Reference Figure 1 and Figure 2 The top of the water tank 1 is bolted with a pitch motor 44 that is electrically connected to the control system. A bidirectional screw 41 is coaxially bolted to the output shaft of the pitch motor 44. The water pump 3 is located between two support rods 42. Multiple pads 45 are bolted to the support rods 42. The multiple pads 45 are stacked vertically. The bottom of the flange on the water pump 3 presses on the topmost pad 45 of the stack.

[0032] Reference Figure 1 and Figure 2 A detection tube 5 is bolted to the top of the water tank 1. A flow meter 6 and a pressure gauge 7 are bolted to the detection tube 5. Both the flow meter 6 and the pressure gauge 7 are electrically connected to the control system. One end of the detection tube 5 is close to the detection port 2 and is used to insert into the outlet of the water pump 3. The other end extends from the top of the water tank 1 into the interior of the water tank 1.

[0033] The worker first adjusts the number of layers of the pad 45 according to the size between the flange on the water pump 3 and the outlet end of the water pump 3. Then, the worker starts the pitch motor 44 through the control system. The output shaft of the pitch motor 44 drives the bidirectional screw 41 to rotate, and under the guiding and limiting action of the guide rod 43, the two support rods 42 move closer or further apart.

[0034] Then, the water pump 3 is placed on the water tank 1 using hoisting equipment, so that the water pump 3 can be placed on the pad 45 through the flange on it. At this time, the bottom inlet end of the water pump 3 is below the liquid surface in the water tank 1, and the axis of the outlet end of the water pump 3 is at the same height as the inlet end of the detection tube 5.

[0035] Reference Figure 2 and Figure 3 A locking component 8 is arranged on the water tank 1. The locking component 8 is used to stably fix the outlet end of the water pump 3 on the detection tube 5. The locking component 8 includes a mounting plate 81 welded to the top of the water tank 1. The mounting plate 81 is located on the side of the water pump 3 facing away from the detection tube 5. A retaining ring plate 82 is welded on the detection tube 5. A locking cylinder 83 electrically connected to the control system is bolted to the mounting plate 81.

[0036] Reference Figure 2 and Figure 3 A protective cover 11 is bolted to the water tank 1. The locking cylinder 83 is located inside the protective cover 11. A stop block 84 with a C-shaped cross section is arranged on the piston rod of the locking cylinder 83. A pressure sensor 85 electrically connected to the control system is bolted between the piston rod of the locking cylinder 83 and the stop block 84. When the stop block 84 pushes the water pump 3 and keeps it stationary, the liquid outlet of the water pump 3 abuts against the baffle plate 82.

[0037] Reference Figure 2 and Figure 3 A sealing assembly 9 is arranged on the water tank 1. The sealing assembly 9 is used to seal the outlet end of the water pump 3 with the detection tube 5.

[0038] Reference Figure 3 The sealing assembly 9 includes a rubber sleeve 91 fitted onto the end of the detection tube 5. The rubber sleeve 91 may be made of rubber material. An inner sleeve 92 is threaded onto the inner side of the end of the detection tube 5. A pressure ring 93 is coaxially welded to the end of the inner sleeve 92 near the water pump 3. The pressure ring 93 is used to press the end of the rubber sleeve 91 near the water pump 3 onto the end of the detection tube 5.

[0039] Reference Figure 2 and Figure 3 A pressure ring plate 94 is bolted to the baffle plate 82. The pressure ring plate 94 is used to press the end of the rubber sleeve 91 away from the water pump 3 onto the baffle plate 82. The rubber sleeve 91 has a clearance hole (not shown in the figure) for the bolt to pass through. The outlet end of the water pump 3 abuts against the rubber sleeve 91. A sealed chamber 95 is formed between the inner side of the rubber sleeve 91 and the outer side of the detection tube 5.

[0040] Reference Figure 3 The detection tube 5 is provided with a pressurizing component 10 for pressurizing the sealed chamber 95. The pressurizing component 10 includes a liquid flow hole 101 that is opened between the inner and outer walls of the detection tube 5. The liquid flow hole 101 is located between the inner sleeve 92 and the baffle plate 82 and communicates with the sealed chamber 95.

[0041] The worker adjusts the outlet of water pump 3 and makes the outlet of water pump 3 point to the inlet of detection tube 5. Then, the locking cylinder 83 is activated through the control system. The piston rod of the locking cylinder 83 extends and pushes the water pump 3 closer to the detection tube 5 through the abutment block 84.

[0042] During this process, the outlet end of the water pump 3 is fitted onto the end of the detection tube 5 until the outlet end of the water pump 3 abuts against the rubber sleeve 91 on the baffle plate 82. Under the restriction of the baffle plate 82, the rubber sleeve 91 at the outlet end of the water pump 3 deforms, thereby achieving a preliminary sealing effect between the outlet end of the water pump 3 and the detection tube 5.

[0043] When the worker starts the water pump 3, the water pump 3 delivers a large amount of water into the detection tube 5, and the water in the detection tube 5 will flow back to the water tank 1 from the other end of the detection tube 5. At the same time, the water pumped out by the water pump 3 will enter the sealed chamber 95 through the liquid flow hole 101, which will cause the rubber sleeve 91 to expand and deform. The expanded and deformed rubber sleeve 91 will make the inner side wall of the liquid outlet end of the water pump 3 and the outer side wall of the detection tube 5 completely sealed.

[0044] During this process, the pressure sensor 85 feeds back the vibration frequency parameter of the water pump 3 to the control system, the pressure gauge 7 feeds back the liquid pressure value output by the water pump 3 to the control system, and the flow meter 6 feeds back the liquid flow rate value output by the water pump 3 to the control system. In this way, the various performance parameters of the water pump 3 can be obtained quickly. At the same time, the workers can see whether the water pump 3 is leaking by checking whether the various parameters change abruptly.

[0045] The implementation principle of Example 1 is as follows: The worker first adjusts the number of stacked layers of the pad 45 according to the size between the flange on the water pump 3 and the outlet end of the water pump 3. Then, the control system starts the pitch motor 44. The output shaft of the pitch motor 44 drives the bidirectional screw 41 to rotate, and under the guiding and limiting action of the guide rod 43, the two support rods 42 move closer or further apart.

[0046] Then, the water pump 3 is placed on the water tank 1 using hoisting equipment, so that the water pump 3 can be placed on the pad 45 through the flange on it. At this time, the bottom inlet end of the water pump 3 is below the liquid surface in the water tank 1, and the axis of the outlet end of the water pump 3 is at the same height as the inlet end of the detection tube 5.

[0047] The worker adjusts the outlet of water pump 3 and makes the outlet of water pump 3 point to the inlet of detection tube 5. Then, the locking cylinder 83 is activated through the control system. The piston rod of the locking cylinder 83 extends and pushes the water pump 3 closer to the detection tube 5 through the abutment block 84.

[0048] During this process, the outlet end of the water pump 3 is fitted onto the end of the detection tube 5 until the outlet end of the water pump 3 abuts against the rubber sleeve 91 on the baffle plate 82. Under the restriction of the baffle plate 82, the rubber sleeve 91 at the outlet end of the water pump 3 deforms, thereby achieving a preliminary sealing effect between the outlet end of the water pump 3 and the detection tube 5.

[0049] When the worker starts the water pump 3, the water pump 3 delivers a large amount of water into the detection tube 5, and the water in the detection tube 5 will flow back to the water tank 1 from the other end of the detection tube 5. At the same time, the water pumped out by the water pump 3 will enter the sealed chamber 95 through the liquid flow hole 101, which will cause the rubber sleeve 91 to expand and deform. The expanded and deformed rubber sleeve 91 will make the inner side wall of the liquid outlet end of the water pump 3 and the outer side wall of the detection tube 5 completely sealed.

[0050] During this process, the pressure sensor 85 feeds back the vibration frequency parameter of the water pump 3 to the control system, the pressure gauge 7 feeds back the liquid pressure value output by the water pump 3 to the control system, and the flow meter 6 feeds back the liquid flow rate value output by the water pump 3 to the control system. In this way, the various performance parameters of the water pump 3 can be obtained quickly. At the same time, the workers can see whether the water pump 3 is leaking by checking whether the various parameters change abruptly.

[0051] Example 2 Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the pressurizing component 10 includes a pressure chamber shell 102 coaxially sleeved on the detection tube 5. The pressure chamber shell 102 is welded to the detection tube 5. The pressure chamber shell 102 is located on the side of the baffle plate 82 facing away from the rubber sleeve 91. The interior of the pressure chamber shell 102 is hollow and open on the side facing the baffle plate 82.

[0052] Reference Figure 4 and Figure 5 A pressure channel 103 is provided on the baffle plate 82. The pressure channel 103 is used to connect the interior of the pressure chamber shell 102 with the sealed chamber 95. A bracket 104 is bolted to the top of the water tank 1. A pressure cylinder 105 electrically connected to the control system is bolted to the bracket 104. A hollow pressure cylinder 106 with an open top is bolted to the bottom of the bracket 104.

[0053] Reference Figure 4 and Figure 5 A flexible hose 107 is connected between the bottom of the pressure cylinder 106 and the pressure chamber shell 102. The flexible hose 107 can be made of pressure-resistant material. A pressure plate 108 is vertically slidably arranged inside the pressure cylinder 106. A sealing ring 109 (not shown in the figure) is arranged between the outer circumferential wall of the pressure plate 108 and the inner circumferential wall of the pressure cylinder 106. The sealing ring 109 can be a rubber ring in the prior art. The pressure plate 108 is coaxially bolted to the piston rod of the pressure cylinder 105.

[0054] The implementation principle of Example 2 is as follows: Before starting the water pump 3, the control system starts the pressure cylinder 105. The piston rod of the pressure cylinder 105 extends and drives the pressure plate 108 to slide downward. The pressure plate 108 squeezes the liquid in the pressure cylinder 106. The liquid in the pressure cylinder 106 flows to the pressure chamber shell 102 through the hose 107. The liquid in the pressure chamber shell 102 then flows to the sealed chamber 95 through the pressure channel 103, thereby causing the rubber sleeve 91 to expand and deform, thus achieving a complete seal between the inner wall of the outlet end of the water pump 3 and the outer wall of the detection tube 5.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water pump performance testing device, characterized in that: The system includes a water tank (1), with a detection port (2) at the top. A water pump (3) to be tested is placed at the detection port (2) of the water tank (1). A support (4) for supporting the water pump (3) is provided on the water tank (1). A detection tube (5) is provided on the top of the water tank (1). A flow meter (6) and a pressure gauge (7) are provided on the detection tube (5). The flow meter (6) and the pressure gauge (7) are both electrically connected to the control system. The detection tube (5) has one end close to the detection port (2) and is used to insert into the outlet end of the water pump (3), and the other end extends into the interior of the water tank (1). The water tank (1) is provided with a locking member (8) and a sealing assembly (9). The locking member (8) is used to stably fix the outlet end of the water pump (3) on the detection tube (5), and the sealing assembly (9) is used to seal the outlet end of the water pump (3) with the detection tube (5). The locking component (8) includes a mounting plate (81) disposed on the water tank (1). The mounting plate (81) is located on the side of the water pump (3) facing away from the detection tube (5). A retaining ring plate (82) is disposed on the detection tube (5). A locking cylinder (83) electrically connected to the control system is disposed on the mounting plate (81). A stop block (84) with a C-shaped cross section is disposed on the piston rod of the locking cylinder (83). A pressure sensor (85) electrically connected to the control system is disposed between the piston rod of the locking cylinder (83) and the stop block (84). When the stop block (84) pushes the water pump (3) and remains stationary, the liquid outlet end of the water pump (3) abuts against the retaining ring plate (82). The sealing assembly (9) includes a rubber sleeve (91) fitted onto the end of the detection tube (5), an inner sleeve (92) threaded onto the inner side of the end of the detection tube (5), and a pressure ring (93) coaxially disposed on the end of the inner sleeve (92) near the water pump (3). The pressure ring (93) is used to press the end of the rubber sleeve (91) near the water pump (3) against the end of the detection tube (5). A pressure ring is bolted onto the retaining ring plate (82). Side ring plate (94), the pressing edge ring plate (94) is used to press the end of the rubber sleeve (91) away from the water pump (3) onto the retaining ring plate (82), the liquid outlet end of the water pump (3) abuts against the rubber sleeve (91), a sealed chamber (95) is formed between the inner side of the rubber sleeve (91) and the outer side of the detection tube (5), and a pressurizing component (10) for pressurizing the sealed chamber (95) is provided on the detection tube (5); The pressurizing component (10) includes a liquid flow hole (101) that is opened between the inner and outer walls of the detection tube (5). The liquid flow hole (101) is located between the inner sleeve (92) and the baffle plate (82). The liquid flow hole (101) communicates with the sealing chamber (95).

2. The water pump performance testing device according to claim 1, characterized in that: The support member (4) includes a bidirectional screw (41) rotatably mounted on the top of the water tank (1). Both ends of the bidirectional screw (41) are threadedly connected to support rods (42). The top of the water tank (1) is provided with a guide rod (43) parallel to the axis of the bidirectional screw (41). The bidirectional screw (41) and the guide rod (43) are respectively located on both sides of the detection port (2). The support rod (42) is slidably sleeved on the guide rod (43). The top of the water tank (1) is provided with a pitch motor (44) electrically connected to the control system. The bidirectional screw (41) is coaxially mounted on the output shaft of the pitch motor (44). The water pump (3) is located between the two support rods (42). Multiple pads (45) are detachably mounted on the support rods (42). The multiple pads (45) are vertically stacked. The flange on the water pump (3) is placed on the pads (45).

3. The water pump performance testing device according to claim 2, characterized in that: The detection port (2) is provided on the water pump (3) in multiple ways.

4. The water pump performance testing device according to claim 1, characterized in that: The pressurizing component (10) includes a pressure chamber shell (102) coaxially sleeved on the detection tube (5). The pressure chamber shell (102) is located on the side of the baffle plate (82) facing away from the rubber sleeve (91). The interior of the pressure chamber shell (102) is hollow and open on the side facing the baffle plate (82). A pressure channel (103) is provided on the baffle plate (82). The pressure channel (103) is used to connect the interior of the pressure chamber shell (102) with the sealed chamber (95). A bracket (104) is provided on the water tank (1). A pressure cylinder (105) electrically connected to the control system is provided on the support (104). A hollow pressure cylinder (106) with an open top is provided below the support (104). A hose (107) is connected between the bottom of the pressure cylinder (106) and the pressure chamber shell (102). A pressure plate (108) is slidably provided inside the pressure cylinder (106). A sealing ring (109) is provided between the outer circumferential wall of the pressure plate (108) and the inner circumferential wall of the pressure cylinder (106). The pressure plate (108) is coaxially provided on the piston rod of the pressure cylinder (105).

5. The water pump performance testing device according to claim 1, characterized in that: The water tank (1) is provided with a protective cover (11), and the locking cylinder (83) is located inside the protective cover (11).

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