Pump performance test platform, system and method

Abstract

The invention discloses a pump performance testing platform, system and method, and relates to the technical field of high-pressure cleaning machines. Comprising a platform and mounting parts; the platform is provided with a supporting surface, the mounting part is arranged on the supporting surface of the platform, the mounting part at least comprises a first mounting plate and a second mounting plate which are arranged in parallel and vertically mounted on the supporting surface of the platform, a first mounting hole is formed in the first mounting plate, and a second mounting hole is formed in the second mounting plate; the first mounting plate is provided with a first mounting hole, the second mounting plate is provided with a second mounting hole coaxial with the first mounting hole, the first mounting plate is provided with a plurality of third mounting holes around the first mounting hole, and the second mounting plate is provided with a plurality of fourth mounting holes around the second mounting hole. The high-pressure pump testing device has the beneficial effect that the motor efficiency and the high-pressure pump efficiency can be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure cleaners, and particularly to a pump performance test platform, system and method. Background Art

[0002] With the improvement of people's quality of life requirements, the rapid iteration speed of products is increasing, and the requirements for product performance are also increasing. Demands such as energy conservation, quietness, and intelligence have gradually become the development direction of new products. To make good products, it is necessary to further explore the core technologies of products. For the cleaning machine industry, the performance of the core components, especially the motor and the high-pressure pump, is an important factor determining the energy conservation of the cleaning machine.

[0003] Currently, the detection of motor efficiency is basically achieved by installing the motor on a dynamometer, but there is no systematic way to detect the performance of the high-pressure pump. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a pump performance test platform, system and method that can effectively detect the performance of the high-pressure pump.

[0005] The present invention provides a pump performance test platform, including a platform and an installation part; the platform has a support surface, the installation part is arranged on the support surface of the platform, the installation part at least includes a first installation plate and a second installation plate that are arranged in parallel and perpendicularly installed on the support surface of the platform, a first installation hole is opened on the first installation plate, a second installation hole coaxial with the first installation hole is opened on the second installation plate, a plurality of third installation holes are opened around the first installation hole on the first installation plate, and a plurality of fourth installation holes are opened around the second installation hole on the second installation plate.

[0006] Optionally, it further includes a driving part and a support plate. The driving part includes a first driving unit, a second driving unit and a third driving unit. The first driving unit is installed on the platform, the second driving unit is installed on the first driving unit, the first driving unit drives the second driving unit to lift, the third driving unit is installed on the second driving unit, the second driving unit drives the third driving unit to move back and forth in a first direction, the support plate is installed on the third driving unit, the third driving unit drives the support plate to move back and forth in a second direction perpendicular to the first direction, and the installation part is installed on the support plate.

[0007] Optionally, the first driving unit includes a driving shaft, a worm wheel, and a worm. The worm wheel is sleeved on the driving shaft and is relatively fixed to the driving shaft. The worm is meshed with the worm wheel, and the worm is arranged in a direction perpendicular to the support surface. The second driving unit includes a first mounting block which is provided with a threaded hole that is threadedly matched with the worm. The worm passes through the threaded hole, and during the rotation of the worm, the first mounting block is driven to move up and down.

[0008] Optionally, the second driving unit further includes a first lead screw and a first lead screw slider. The first mounting block is provided with a first chute that penetrates through the first mounting block in a first direction. The first lead screw is arranged in the first chute of the first mounting block in the first direction. The first lead screw slider is sleeved on the first lead screw, and the first lead screw slider is located in the first chute. The first lead screw slider is fixedly connected to the third driving unit, so that the first lead screw slider and the third driving unit are relatively fixed.

[0009] Optionally, the third driving unit includes a second lead screw, a second lead screw slider, and a second mounting block. The second mounting block is provided with a second chute that penetrates through the second mounting block in a second direction. The second lead screw is arranged in the second chute of the second mounting block in the second direction. The second lead screw slider is sleeved on the second lead screw, and the second lead screw slider is located in the second chute. The second lead screw slider is fixedly connected to the support plate, so that the second lead screw slider and the support plate are relatively fixed.

[0010] Optionally, a support seat is further provided on the platform, and the second mounting plate is located between the first mounting plate and the support seat.

[0011] The present invention further provides a pump performance testing system, which includes a motor, a rotating shaft, a reducer, a water pump, a dynamometer, and the pump performance testing platform as described above. The motor is mounted on the first mounting plate through the third mounting hole. The rotor of the motor drives the rotating shaft to rotate, and the rotating shaft passes through the first mounting hole of the first mounting plate and the second mounting hole of the second mounting plate. A first rotational speed sensor and a first torque sensor are mounted on the rotating shaft. The reducer is mounted on the second mounting plate through the fourth mounting hole. One end of the rotating shaft passing through the second mounting hole is connected to the input shaft of the reducer. The output shaft of the reducer is connected to the pump shaft of the water pump. One end of the pump shaft is connected to the reducer, and the other end of the pump shaft is connected to the dynamometer head of the dynamometer. A flow sensor and a water pressure sensor are respectively mounted at the water inlet and the water outlet of the water pump.

[0012] Optionally, it further includes an electrical parameter measuring instrument, a first dynamometer controller, and a second dynamometer controller. The electrical parameter measuring instrument is connected to the motor and is used to measure the input power of the motor under the working state. The first dynamometer controller is connected to the first rotational speed sensor and the first torque sensor and is used to collect the detection data of the first rotational speed sensor and the first torque sensor. The second dynamometer controller is connected to the dynamometer and is used to collect the rotational speed and torque data of the dynamometer head of the dynamometer.

[0013] Optionally, a second rotational speed sensor and a second torque sensor are provided on the dynamometer head, and the second dynamometer controller collects the detection data of the second rotational speed sensor and the second torque sensor.

[0014] The present invention also provides a pump performance test method, including the following steps: Measure the power P of the motor through the electrical parameter measuring instrument i ; Collect the values of the first rotational speed sensor and the first torque sensor on the rotating shaft through the first dynamometer controller, and calculate the output power P of the motor o1 , and obtain η1 = P o1 / P i ; Measure the power P on the dynamometer head of the dynamometer through the second dynamometer controller o2 , and obtain η2 = P o2 / P o1 ; Obtain the values detected by the flow sensor and the water pressure sensor installed at the water inlet and outlet of the water pump and the motor power P i , and obtain η3 = P*F / 0.6 / P i， where P is the water pressure at the water outlet of the water pump, in Pa, and F is the water flow rate at the water inlet of the water pump, in cubic meters per second; Obtain the performance efficiency of the pump as η3 / η2 / η1 through η1, η2, and η3.

[0015] The beneficial effect of the present invention is: to provide a platform for installing a motor, a rotating shaft, a reducer, and a water pump, install the motor, the rotating shaft, the reducer, and the water pump on the platform, and collect and calculate their powers, so as to obtain the performance efficiency of the water pump. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a pump performance test platform of the present invention.

[0018] Figure 2 It is a schematic structural diagram of another perspective of a pump performance test platform of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the driving part in a pump performance test platform of the present invention.

[0020] Figure 4 It is a schematic structural diagram of a pump performance test system of the present invention.

[0021] Figure 5 It is a cross-sectional view of a partial structure of a pump performance test system of the present invention.

[0022] Figure 6 It is a schematic structural diagram of a motor, a reducer, and a water pump in a pump performance test system of the present invention.

[0023] In the figure: Platform 1, support surface 11; Mounting part 2, first mounting plate 21, first mounting hole 211, third mounting hole 212, second mounting plate 22, second mounting hole 221, fourth mounting hole 222, fifth mounting hole 223, opening area 224, bolt 225, third mounting plate 23, fourth mounting plate 24; Support seat 3; Driving part 4, first driving unit 41, driving shaft 411, worm gear 412, worm 413, first handle 414, bottom plate 415, guiding rod 416, limiting block 417, second driving unit 42, first lead screw 421, first mounting block 422, second handle 423, third driving unit 43, second lead screw 431, second mounting block 432, third handle 433, support plate 44; Motor 5; Rotating shaft 6, first rotational speed sensor 61, first torque sensor 62; Reducer 7; Water pump 8, pump shaft 81, water inlet 82, water outlet 83; Dynamometer 9, dynamometer head 91. Detailed implementation manners

[0024] The following will describe in detail specific embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0025] Unless otherwise clearly defined and limited, terms such as "arrange", "install", "connect", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0026] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.

[0028] The term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to including the listed elements, it may also include other elements not specifically listed.

[0029] Such as Figure 1 and Figure 2As shown in the figure, this embodiment provides a pump performance test platform, including a platform 1 and a mounting part 2. The platform 1 has a support surface 11, and the mounting part 2 is provided on the support surface 11 of the platform 1. The mounting part 2 includes a first mounting plate 21 and a second mounting plate 22 that are arranged in parallel and vertically mounted on the support surface 11 of the platform 1. Additionally, it also includes a third mounting plate 23 and a fourth mounting plate 24. The third mounting plate 23 and the fourth mounting plate 24 are respectively arranged at the top and bottom of the first mounting plate 21 and the second mounting plate 22. The first mounting plate 21, the second mounting plate 22, the third mounting plate 23, and the fourth mounting plate 24 enclose a rectangular cross-section. A first mounting hole 211 is opened on the first mounting plate 21, and the second mounting plate 22 has an opening area 224. A second mounting hole 221 coaxial with the first mounting hole 211 is opened in the opening area 224 of the second mounting plate 22. The coaxial first mounting hole 211 and second mounting hole 221 are used for the shaft connecting the output end of the motor to pass through, so that when the motor is mounted on the first mounting plate 21, the shaft connecting the output end of the motor can pass through the first mounting hole 211 and the second mounting hole 221. And a plurality of third mounting holes 212 are opened around the first mounting hole 211 on the first mounting plate 21. The third mounting holes 212 are used to detachably mount the motor on the first mounting plate 21 through bolts 225. A plurality of fourth mounting holes 222 are opened around the opening area 224 on the second mounting plate 22. The fourth mounting holes 222 are used to detachably mount the reducer on the second mounting plate 22 through bolts 225. And a fifth mounting hole 223 is also opened in the opening area 224. The fifth mounting hole 223 is used to provide a bearing mounting position. A bearing is arranged in the bearing mounting position, and the output shaft of the reducer can be inserted through the bearing to provide support for the output shaft of the reducer.

[0030] The pump performance test platform provided in this embodiment can provide a test platform for the motor, the reducer, and the water pump. When the performance test of the pump needs to be carried out, the motor and the reducer are fixed through the first mounting plate 21 and the second mounting plate 22. And the output end of the motor and the input shaft of the reducer are connected by a shaft. The water pump to be tested is placed on the platform 1 and connected to the output shaft of the reducer. Through the combined connection of the motor, the reducer, and the water pump, the normal use state of the water pump is simulated, and the performance efficiency of the pump is tested. Moreover, the motor and the reducer are respectively detachably mounted on the first mounting plate 21 and the second mounting plate 22, and the required models of the motor and the reducer can be flexibly selected during the test.

[0031] Further, as Figure 2 and Figure 3As shown in the figure, in order to ensure higher device adaptability on the platform 1, the pump performance test platform provided in this embodiment further includes a driving part 4 and a support plate 44. The driving part 4 includes a first driving unit 41, a second driving unit 42, and a third driving unit 43. The first driving unit 41 is installed on the platform 1, the second driving unit 42 is installed on the first driving unit 41, the first driving unit 41 drives the second driving unit 42 to lift and lower, the third driving unit 43 is installed on the second driving unit 42, and the second driving unit 42 drives the third driving unit 43 to move back and forth in the first direction. The support plate 44 is installed on the third driving unit 43, and the third driving unit 43 drives the support plate 44 to move back and forth in the second direction perpendicular to the first direction. The first direction and the second direction are in a plane, and the installation part 2 is installed on the support plate 44. By driving the support plate 44 in the horizontal, longitudinal, and vertical directions through the driving part 4, the installation part 2 on the support plate 44 is driven to move, thereby driving the motor and the reducer on the installation part 2 to move. In this way, motors and reducers of different sizes and specifications can be adapted. When replacing motors and reducers of different specifications, their orientations can be adjusted through the driving part 4 to be adapted and aligned with the water pump for connection.

[0032] Specifically, the first driving unit 41 includes a first handle 414, a driving shaft 411, a worm gear 412, a worm 413, a bottom plate 415, a guiding rod 416, and a limiting block 417. The worm gear 412 is sleeved on the driving shaft 411 and is relatively fixed to the driving shaft 411. The driving shaft 411 is arranged on the bottom plate 415. The first handle 414 is arranged at the end of the driving shaft 411. When the user rotates the first handle 414, the driving shaft 411 can be driven to rotate. The worm 413 meshes with the worm gear 412 and is arranged in a direction perpendicular to the support surface 11. The bottom plate 415 is located below the platform 1. The platform 1 and the bottom plate 415 are provided with coaxial first through holes. The worm 413 passes through the first through holes of the platform 1 and the bottom plate 415. The bottom plate 415 and the platform 1 are provided with a plurality of second through holes around the first through hole. The guiding rod 416 passes through the second through holes of the bottom plate 415 and the platform 1, and a limiting block 417 is arranged on the guiding rod 416. The limiting block 417 is located above the platform 1, and the cross-sectional dimension of the limiting block 417 is larger than the cross-sectional dimension of the second through hole. The limiting block 417 axially limits the bottom plate 415 above the platform 1, so that the bottom plate 415 will not slide down due to its own gravity. The second driving unit 42 includes a first mounting block 422. The first mounting block 422 is provided with a threaded hole that is thread-matched with the worm 413. The worm 413 passes through the threaded hole of the first mounting block 422. During the rotation of the worm 413, the first mounting block 422 is driven to lift and lower. This process is similar to the cooperation between a lead screw and a lead screw slider.

[0033] The second driving unit 42 further includes a second handle 423, a first lead screw 421 and a first lead screw slider. The first mounting block 422 is provided with a first chute penetrating the first mounting block 422 in a first direction, the first direction being perpendicular to the lifting direction of the first mounting block 422. The first lead screw 421 is disposed in the first chute of the first mounting block 422 along the first direction. The second handle 423 is disposed at the end of the first lead screw 421. The first lead screw slider is sleeved on the first lead screw 421, and the first lead screw slider is located in the first chute. The first lead screw slider is fixedly connected to the third driving unit 43, so that the first lead screw slider and the third driving unit 43 remain relatively fixed.

[0034] The third driving unit 43 includes a third handle 433, a second lead screw 431, a second lead screw slider and a second mounting block 432. The second mounting block 432 is provided with a second chute penetrating the second mounting block 432 in a second direction. The second lead screw 431 is disposed in the second chute of the second mounting block 432 along the second direction. The third handle 433 is sleeved on the end of the second lead screw 431. The second lead screw slider is sleeved on the second lead screw 431, and the second lead screw slider is located in the second chute. The second lead screw slider is fixedly connected to the support plate 44, so that the second lead screw slider and the support plate 44 remain relatively fixed.

[0035] When it is necessary to adjust the height of the mounting portion 2 and thus the height of the motor, by rotating the first handle 414, when the drive shaft 411 rotates, the worm gear 412 rotates together. When the worm gear 412 rotates, the worm 413 rotates. During the rotation of the worm 413, the first mounting block 422 rises or falls under the screw thread fit. When it is necessary to adjust the orientation of the mounting portion 2 in the horizontal direction, by rotating the second handle 423 or the third handle 433, when the first lead screw 421 and the second lead screw 431 rotate, the second mounting block 432 and the third mounting block move in the horizontal and vertical directions, so as to adjust the orientation of the motor and the reducer to adapt to different test scenarios.

[0036] Meanwhile, a support seat 3 is further provided on the platform 1, and the second mounting plate 22 is located between the first mounting plate 21 and the support seat 3. The support seat 3 is used to support the water pump, so that the height of the water pump is adapted to the heights of the motor and the reducer, which is convenient for connecting them together, so as to perform the water pump performance efficiency test.

[0037] In summary, the pump performance test platform provided by this embodiment can provide performance efficiency test conditions for the water pump, and the motor and the reducer are detachably mounted through the first mounting plate 21 and the second mounting plate 22, and different models and specifications of the motor and the reducer can be replaced according to actual needs. At the same time, the mounting portion 2 for mounting the motor and the reducer can move up and down and horizontally on the platform 1, and thus the orientation of the motor and the reducer can be adjusted conveniently, making the applicability wider.

[0038] AsFigures 4 to 6 As shown in the figure, this embodiment also provides a pump performance test system, which includes a motor 5, a rotating shaft 6, a speed reducer 7, a water pump 8, a dynamometer 9, and the pump performance test platform described above. The motor 5 is installed on the first mounting plate 21 through the third mounting hole 212 and fixed by bolts 225. The rotor of the motor 5 drives the rotating shaft 6 to rotate, and the rotating shaft 6 passes through the first mounting hole 211 of the first mounting plate 21 and the second mounting hole 221 of the second mounting plate 22. A first rotational speed sensor 61 and a first torque sensor 62 are installed on the rotating shaft 6. The speed reducer 7 is installed on the second mounting plate 22 through the fourth mounting hole 222 and fixed by bolts 225. One end of the rotating shaft 6 passing through the second mounting hole 221 is connected to the input shaft of the speed reducer 7, and the output shaft of the speed reducer 7 is connected to the pump shaft 81 of the water pump 8. One end of the pump shaft 81 is connected to the speed reducer 7, and the other end of the pump shaft 81 is connected to the dynamometer head 91 of the dynamometer 9. A second rotational speed sensor and a second torque sensor are provided on the dynamometer head 91. The second dynamometer 9 controller collects the detection data of the second rotational speed sensor and the second torque sensor. Flow sensors and water pressure sensors are respectively installed at the water inlet 82 and the water outlet 83 of the water pump 8. Additionally, it also includes an electrical parameter measuring instrument, a first dynamometer 9 controller, and a second dynamometer 9 controller. The electrical parameter measuring instrument is connected to the motor 5 and is used to measure the input power of the motor 5 under the working state. The first dynamometer 9 controller is connected to the first rotational speed sensor 61 and the first torque sensor 62 and is used to collect the detection data of the first rotational speed sensor 61 and the first torque sensor 62. The second dynamometer 9 controller is connected to the dynamometer 9 and is used to collect the rotational speed and torque data of the dynamometer head 91 of the dynamometer 9.

[0039] This embodiment provides a pump performance test method in combination with the above pump performance test system, including the following steps: Measure the instantaneous voltage and current of the motor 5 through the electrical parameter measuring instrument, and calculate the power P of the motor 5 through the following formula i : P i =U*I*COS¢ (1) In the formula: U is the voltage, with the unit of V, I is the current, with the unit of A, and COS¢ represents the power factor, which is the cosine value of the phase difference between the voltage and the current.

[0040] Collect the values of the first rotational speed sensor 61 and the first torque sensor 62 on the rotating shaft 6 through the first dynamometer 9 controller, and calculate the output power P of the motor 5 o1 , P o1 Calculate through the following formula: P o1 =T1*n1 / 9550 (2) Where: T1 is the torque detected by the first torque sensor 62, with the unit of Nm, and n1 is the rotational speed detected by the first rotational speed sensor 61, with the unit of rpm.

[0041] The efficiency η1 of the motor 5 is obtained as η1 = P o1 / P i .

[0042] Data detected by the second rotational speed sensor and the second torque sensor on the dynamometer head 91 of the dynamometer 9 are collected through the second dynamometer 9 controller, and the power P on the dynamometer head 91 of the dynamometer 9 is obtained based on this data o2 , and the power P 02 is calculated through the following formula: P o2 = T2 * n2 / 9550 (3) Where: T2 is the torque detected by the second torque sensor, with the unit of Nm, and n2 is the rotational speed detected by the second rotational speed sensor, with the unit of rpm.

[0043] Based on the power measured on the rotating shaft 6 and the power measured on the dynamometer head 91, η2 = P o2 / P o1 .

[0044] Based on the values detected by the flow sensor and the water pressure sensor installed at the water inlet 82 and the water outlet 83 of the water pump 8, as well as the power P of the motor 5 i , η3 = P * F / 0.6 / P is obtained i， where P is the water pressure at the water outlet 83 of the water pump 8, with the unit of Pa, F is the water flow rate at the water inlet 82 of the water pump 8, with the unit of cubic meters per second, and P i is the aforementioned motor power.

[0045] The performance efficiency of the pump is obtained as η3 / η2 / η1 through η1, η2, and η3.

[0046] In summary, the pump performance testing system and the pump performance testing method provided in this embodiment can calculate the motor efficiency and the performance efficiency of the water pump 8, providing data support for the research and development and improvement of the water pump 8.

[0047] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A pump performance test platform, characterized in that: It includes a platform (1) and a mounting part (2); the platform (1) has a supporting surface (11), the mounting part (2) is arranged on the supporting surface (11) of the platform (1), the mounting part (2) at least includes a first mounting plate (21) and a second mounting plate (22) which are arranged in parallel and vertically mounted on the supporting surface (11) of the platform (1), a first mounting hole (211) is formed on the first mounting plate (21), a second mounting hole (221) coaxial with the first mounting hole (211) is formed on the second mounting plate (22), a plurality of third mounting holes (212) are formed around the first mounting hole (211) on the first mounting plate (21), and a plurality of fourth mounting holes (222) are formed around the second mounting hole (221) on the second mounting plate (22).

2. The pump performance test platform according to claim 1, wherein: It further includes a driving part (4) and a supporting plate (44), the driving part (4) includes a first driving unit (41), a second driving unit (42) and a third driving unit (43), the first driving unit (41) is mounted on the platform (1), the second driving unit (42) is mounted on the first driving unit (41), the first driving unit (41) drives the second driving unit (42) to move up and down, the third driving unit (43) is mounted on the second driving unit (42), the second driving unit (42) drives the third driving unit (43) to make a reciprocating movement in a first direction, the supporting plate (44) is mounted on the third driving unit (43), the third driving unit (43) drives the supporting plate (44) to make a reciprocating movement in a second direction perpendicular to the first direction, and the mounting part (2) is mounted on the supporting plate (44).

3. The pump performance test platform according to claim 2, characterized in that: The first driving unit (41) includes a driving shaft (411), a worm gear (412) and a worm (413), the worm gear (412) is sleeved on the driving shaft (411) and remains relatively fixed with the driving shaft (411), the worm (413) meshes with the worm gear (412), and the worm (413) is arranged in a direction perpendicular to the supporting surface (11), the second driving unit (42) includes a first mounting block (422), a threaded hole threadedly matched with the worm (413) is formed in the first mounting block (422), the worm (413) passes through the threaded hole, and the worm (413) drives the first mounting block (422) to move up and down during the rotation process.

4. The pump performance test platform according to claim 3, wherein: The second driving unit (42) further includes a first lead screw (421) and a first lead screw slider. The first mounting block (422) is provided with a first chute penetrating the first mounting block (422) in a first direction. The first lead screw (421) is disposed in the first chute of the first mounting block (422) in the first direction. The first lead screw slider is sleeved on the first lead screw (421), and the first lead screw slider is located in the first chute. The first lead screw slider is fixedly connected to the third driving unit (43), so that the first lead screw slider and the third driving unit (43) remain relatively fixed.

5. The pump performance test platform according to claim 4, wherein: The third driving unit (43) includes a second lead screw (431), a second lead screw slider, and a second mounting block (432). The second mounting block (432) is provided with a second chute penetrating the second mounting block (432) in a second direction. The second lead screw (431) is disposed in the second chute of the second mounting block (432) in the second direction. The second lead screw slider is sleeved on the second lead screw (431), and the second lead screw slider is located in the second chute. The second lead screw slider is fixedly connected to the support plate (44), so that the second lead screw slider and the support plate (44) remain relatively fixed.

6. The pump performance test platform according to claim 1, wherein: A support seat (3) is further provided on the platform (1), and the second mounting plate (22) is located between the first mounting plate (21) and the support seat (3).

7. A pump performance testing system, characterized in that: It includes a motor (5), a rotating shaft (6), a reducer (7), a water pump (8), a dynamometer (9), and a pump performance test platform according to any one of claims 1-6. The motor (5) is installed on the first mounting plate (21) through the third mounting hole (212). The rotor of the motor (5) drives the rotating shaft (6) to rotate, and the rotating shaft (6) passes through the first mounting hole (211) of the first mounting plate (21) and the second mounting hole (221) of the second mounting plate (22). A first rotational speed sensor (61) and a first torque sensor (62) are installed on the rotating shaft (6). The reducer (7) is installed on the second mounting plate (22) through the fourth mounting hole (222). One end of the rotating shaft (6) passing through the second mounting hole (221) is connected to the input shaft of the reducer (7). The output shaft of the reducer (7) is connected to the pump shaft (81) of the water pump (8). One end of the pump shaft (81) is connected to the reducer (7), and the other end of the pump shaft (81) is connected to the dynamometer head (91) of the dynamometer (9). A flow sensor and a water pressure sensor are respectively installed at the water inlet (82) and the water outlet (83) of the water pump (8).

8. The pump performance testing system according to claim 7, characterized in that: It also includes an electrical parameter measuring instrument, a first dynamometer controller, and a second dynamometer controller. The electrical parameter measuring instrument is connected to the motor (5) and is used to measure the input power of the motor (5) under the working state. The first dynamometer controller is connected to the first speed sensor (61) and the first torque sensor (62) and is used to collect the detection data of the first speed sensor (61) and the first torque sensor (62). The second dynamometer controller is connected to the dynamometer (9) and is used to collect the speed and torque data of the dynamometer head (91) of the dynamometer (9).

9. The pump performance testing system according to claim 7, wherein: A second speed sensor and a second torque sensor are provided on the dynamometer head (91), and the second dynamometer controller collects the detection data of the second speed sensor and the second torque sensor.

10. A pump performance testing method, characterized in that, It includes the following steps: Measure the power P of the motor (5) by means of the electrical parameter measuring instrument i ; Collect the values of the first rotational speed sensor (61) and the first torque sensor (62) on the rotating shaft (6) through the first dynamometer controller, and calculate the output power P of the motor (5). o1 , obtaining η1 = P o1 / P i ; The power P on the dynamometer head (91) of the dynamometer (9) is measured by the second dynamometer controller o2 , and η2 = P o2 / P o1 ; The values detected by the flow sensor and the water pressure sensor installed through the water inlet (82) and the water outlet (83) of the water pump (8), and the power P of the motor (5) i , to obtain η3 = P * F / 0.6 / P i， where P is the water pressure at the water outlet (83) of the water pump (8), in Pa, and F is the water flow rate at the water inlet (82) of the water pump (8), in cubic meters per second; The performance efficiency of the pump is obtained as η3 / η2 / η1 through η1, η2, and η3.

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