Water pump testboard

Abstract

The invention belongs to the technical field of water pump testing, and particularly relates to a water pump testboard. The water pump testboard comprises a circulating water tank, a water pump frame used for installing a to-be-tested water pump and a water collecting tank arranged below the water pump frame, when the to-be-tested water pump is tested, water in the circulating water tank is pumped through a water pumping pipe, and then the water is discharged back into the circulating water tank through a water return pipe and a wave absorbing device; the wave absorbing device can reduce vibration of water in the circulating water tank caused by return water, so that stable water supply pressure and water speed are guaranteed, and the consistency of detection results is good. Besides, the water collecting tank below the water pump frame can collect water dripping when the water pump to be tested is disassembled and assembled, and then the water in the water collecting tank is pumped into the wave absorbing device through the make-up pump, so that the water flows back into the circulating water tank.

Description

Technical Field

[0001] The invention belongs to the technical field of water pump testing, and in particular relates to a water pump testing bench. Background Art

[0002] Before leaving the factory, water pumps generally need to undergo performance tests such as pressure, flow, current, and voltage. Figure 1 The existing water pump test bench generally includes a water storage tank, a circulation pipeline, a flow meter, a pressure gauge, etc. The water pump is installed on the circulation pipeline, and its performance is tested in the process of the water pump extracting water from the water storage tank.

[0003] However, the circulating water in the water tank of the above test bench is repeatedly impacted during the operation of the water pump, the kinetic energy changes greatly, the water inlet pressure is unstable, and it cannot simulate the state of static water entering the water pump, resulting in inaccurate test results. In addition, when the test pump is replaced, water will be lost, the water supply height will be reduced, and the water supply pressure will be inconsistent, resulting in poor reliability of the test results. Summary of the invention

[0004] The purpose of the invention is to provide a water pump test bench.

[0005] The present application provides a water pump test bench. The water pump test bench comprises:

[0006] A circulating water tank, wherein a wave absorbing device is arranged inside;

[0007] A water pump bracket is arranged on one side of the circulating water tank and is used for installing a water pump;

[0008] A water collecting tank is arranged below the water pump frame;

[0009] A water pumping pipe, one end of which is connected to the circulating water tank, and the other end is connected to the water inlet end of the water pump;

[0010] A water return pipe, one end of which is connected to the water outlet of the water pump and the other end of which is connected to the wave absorbing device; and

[0011] A water supply pump is used to pump water from the water collection tank into the wave-breaking device;

[0012] The circulating water tank is provided with an overflow channel connected with the water collecting tank, which is used to maintain the water level in the circulating water tank at a preset height.

[0013] In one embodiment of the present application, the wave-breaking device includes a box body disposed in a circulating water tank;

[0014] A plurality of wave-breaking plates are arranged in the box body along the water inlet direction to the water outlet direction;

[0015] The wave-breaking plate is provided with a water-passing hole.

[0016] In one embodiment of the present application, the diameter of the water holes on each wave-breaking plate decreases sequentially from the water inlet direction to the water outlet direction.

[0017] In one embodiment of the present application, the plurality of wave-breaking plates divide the space in the box body into a water inlet chamber, a plurality of intermediate chambers and a water outlet chamber;

[0018] The water inlet chamber is provided with a water inlet connected to a return water pipe and / or a water supply pump;

[0019] A water outlet communicated with the circulating water tank is arranged at the lower part of the water outlet chamber.

[0020] In one embodiment of the present application, the water pump support comprises:

[0021] A cantilever beam, one end of which is fixed to the outer wall of the circulating water tank;

[0022] A support seat is arranged on the upper surface of the cantilever beam;

[0023] The pressing device is arranged on the cantilever beam at one side of the support seat and is used to press the water pump tightly onto the support seat.

[0024] In one embodiment of the present application, a water pump accommodating groove is provided on the upper surface of the support seat.

[0025] In one embodiment of the present application, a detection module is provided on the water suction pipe and / or the water return pipe.

[0026] In one embodiment of the present application, an operation panel is provided in the upper part of the water collecting tank;

[0027] The operating panel is provided with a water leakage hole.

[0028] In one embodiment of the present application, the wave-breaking device and the overflow channel are respectively located at two ends of a diagonal line in the circulating water tank.

[0029] In one embodiment of the present application, the water pump test bench further includes:

[0030] A frame, wherein the circulating water tank is arranged in the frame;

[0031] The control box is arranged on the top of the rack.

[0032] The beneficial effects of the present invention are:

[0033] The water pump test bench of the present invention includes a circulating water tank, a water pump rack for installing a water pump to be tested, and a water collecting tank arranged below the water pump rack. When the water pump to be tested is tested, water in the circulating water tank is extracted through a pumping pipe, and then discharged back into the circulating water tank through a return pipe through a wave-breaking device; the wave-breaking device can reduce the shock of the return water on the water in the circulating water tank, thereby ensuring the stability of the water supply pressure and water speed, and good consistency of the test results; the water level in the circulating water tank is maintained at a preset height through an overflow channel, and the flow rate can be reduced, and the kinetic energy of the entire water body can be reduced, further improving the consistency of the test results. In addition, the water collecting tank below the water pump rack can collect water dripping when the water pump to be tested is disassembled and assembled, and then the water in the water collecting tank is pumped into the wave-breaking device through a water supply pump, so that it flows back into the circulating water tank.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is an existing water pump test bench;

[0038] Figure 2 is a three-dimensional diagram of a water pump test bench according to a preferred embodiment of the present invention;

[0039] Figure 3 is a schematic diagram of a water pump test bench according to a preferred embodiment of the present invention;

[0040] Figure 4 is a three-dimensional cross-sectional view of a wave-breaking device according to a preferred embodiment of the present invention;

[0041] Figure 5 is a side cross-sectional view of a wave absorbing device according to a preferred embodiment of the present invention;

[0042] Figure 6 It is a schematic diagram of a water pump stand according to a preferred embodiment of the present invention.

[0043] In the figure:

[0044] Circulating water tank 1, overflow channel 11, water pump frame 2, cantilever beam 21, support seat 22, water pump accommodating groove 221, downward pressure device 23, water collecting tank 3, operating panel 31, water leakage hole 311, water suction pipe 4, return pipe 5, water supply pump 6, wave-breaking device 7, water inlet chamber 701, water inlet 7011, intermediate chamber 702, water outlet chamber 703, water outlet 7031, box body 71, wave-breaking plate 711, water hole 7111, frame 8, control box 9, water pump 100, flow meter 200, pressure gauge 300. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The present application provides a water pump test bench, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0047] See also Figure 2 and Figure 3 In one embodiment, the water pump test bench includes: a circulating water tank 1, which is provided with a wave-breaking device 7; a water pump frame 2, which is arranged on one side of the circulating water tank 1 and is used to install the water pump; a water collecting tank 3, which is arranged below the water pump frame 2; a water pumping pipe 4, one end of which is connected to the circulating water tank 1, and the other end is connected to the water inlet end of the water pump; a water return pipe 5, one end of which is connected to the water outlet end of the water pump, and the other end is connected to the wave-breaking device 7; and a water supply pump 6, which is used to pump water in the water collecting tank 3 into the wave-breaking device 7; wherein the circulating water tank 1 is provided with an overflow channel 11 connected to the water collecting tank 3, which is used to maintain the water level in the circulating water tank 1 at a preset height.

[0048] Furthermore, the water pump test bench may also include: a frame 8, in which the circulating water tank 1 is arranged; and a control box 9, which is arranged on the top of the frame 8. The control box 9 may be provided with a control module, a processing module, a display module, etc., and may also be provided with some water pump current, voltage, etc. detection modules. Other detection modules may also be provided on the water suction pipe 4 and / or the water return pipe 5; for example, a flow meter 200 may be provided on the water suction pipe 4, and a pressure gauge 300 may be provided on the water return pipe 5.

[0049] In this embodiment, an overflow channel 11 connected to the water collecting tank 3 is provided in the circulating water tank 1, and the water in the water collecting tank 3 is continuously pumped into the wave-breaking device 7 by the water supply pump 6. On the one hand, the overflow channel 11 can stably control the water supply surface height; on the other hand, it can change the return water of the water supply pump 6 and the water pump to be tested 100 from a rapid flow to a weir flow, thereby effectively reducing the water flow velocity and the kinetic energy of the entire water body.

[0050] In this embodiment, specifically, the water pump 100 to be tested can be installed on the water pump frame 2, and the water in the circulating water tank 1 is extracted through the water extraction pipe 4, and then transported back to the circulating water tank 1 through the return pipe 5. The water pump 100 to be tested is tested during its operation. In order to prevent the return water from the return pipe 5 and the water supply pump 6 from having too much impact on the water in the circulating water tank 1, a wave absorbing device 7 is provided inside the circulating water tank 1. The return water first passes through the wave absorbing device 7 and then enters the circulating water tank 1, which can reduce the shock of the return water to the water in the circulating water tank, thereby ensuring the stability of the water supply pressure and water speed, and the consistency of the test results.

[0051] See also Figures 3 to 5 In this embodiment, preferably, the wave-breaking device 7 includes a box body 71 arranged in the circulating water tank 1; a plurality of wave-breaking plates 711 are arranged in the box body 71 along the water inlet direction to the water outlet direction; and a water hole 7111 is arranged on the wave-breaking plate 711.

[0052] Furthermore, in this embodiment, the apertures of the water holes 7111 on each wave-breaking plate 711 decrease in sequence from the water inlet direction to the water outlet direction. Of course, in other embodiments, the apertures of each wave-breaking plate 711 and the water holes 7111 can be designed separately according to actual working conditions, for example, according to parameters such as flow velocity, initial test wave height, etc.

[0053] In this embodiment, after the return water from the return pipe 5 and the water replenishment pump 6 enters the box body 71, it passes through the water holes 7111 with gradually decreasing apertures from the water inlet direction to the water outlet direction, which can gradually slow down the water flow rate and reduce the fluctuation of the water level in the box body 71, thereby reducing the shock of the return water to the water in the water supply area in the circulating water tank.

[0054] Optionally, the plurality of wave-breaking plates 711 divide the space inside the box body 71 into a water inlet chamber 701, a plurality of intermediate chambers 702 and a water outlet chamber 703; the water inlet chamber 701 is provided with a water inlet 7011 connected to the return pipe 5 and / or the water replenishment pump 6; the lower part of the water outlet chamber 703 is provided with a water outlet 7031 connected to the circulating water tank 1.

[0055] In this embodiment, the water outlet 7031 is arranged at the lower part of the box body 71, which can reduce the vibration of the water surface caused by the outlet water.

[0056] Preferably, the wave-breaking device 7 and the overflow channel 11 can be respectively located at the two ends of a diagonal line in the circulating water tank 1; the water inlet of the water pumping pipe 4 can be set on the side wall away from the wave-breaking device 7 and the overflow channel 11; mutual interference can be reduced.

[0057] See also Figure 6 As a preferred embodiment of the water pump frame 2, the water pump frame 2 includes: a cantilever beam 21, one end of which is fixed to the outer wall of the circulating water tank 1; a support seat 22, which is arranged on the upper surface of the cantilever beam 21; a downward pressure device 23, which is arranged on the cantilever beam 21 and is located on one side of the support seat 22, and is used to press the water pump onto the support seat 22.

[0058] In this embodiment, the water pump frame 2 is installed on the cantilever beam 21, so that the water collecting box 3 can collect the dripping water. Optionally, the pressing device 23 can be a quick clamp, which is convenient for quick disassembly and assembly.

[0059] Preferably, a water pump receiving groove 221 is provided on the upper surface of the support seat 22 , which can improve the installation stability of the water pump 100 .

[0060] Preferably, see Figure 3 An operating panel 31 is provided at the upper part of the water collecting box 3 ; a water leakage hole 311 is provided on the operating panel 31 .

[0061] In this embodiment, the operating panel 31 can be used to place operating tools or a water pump to be replaced, etc.; the operating panel 31 can increase the operating height to facilitate operation.

[0062] In this embodiment, further, the circulating water tank 1 is provided with an overflow channel 11 communicating with the water collecting tank 3. By providing the overflow channel 11, the test water level in the circulating water tank 1 can be ensured.

[0063] It should be noted that the performance testing method for the water pump can be implemented using existing technologies according to the items that need to be tested, and will not be described in detail here.

[0064] It should be noted that the various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0065] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A water pump test bench, characterized in that: include: A circulating water tank (1) having a wave absorbing device (7) disposed therein; A water pump bracket (2), arranged on one side of the circulating water tank (1) and used for installing a water pump; A water collecting tank (3) is arranged below the water pump frame (2); A water pumping pipe (4), one end of which is connected to the circulating water tank (1) and the other end of which is connected to the water inlet of the water pump; A water return pipe (5), one end of which is connected to the water outlet of the water pump, and the other end of which is connected to the wave absorbing device (7); and The water supply pump (6) is used to pump water in the water collecting tank (3) into the wave absorbing device (7); wherein The circulating water tank (1) is provided with an overflow channel (11) which is in communication with the water collecting tank (3) and is used to maintain the water level in the circulating water tank (1) at a preset height.

2. The water pump test bench according to claim 1, characterized in that: The wave-breaking device (7) comprises a box body (71) arranged in the circulating water tank (1); A plurality of wave-breaking plates (711) are arranged in the box body (71) along the water inlet direction to the water outlet direction; The wave-breaking plate (711) is provided with a water hole (7111).

3. The water pump test bench according to claim 2, characterized in that: The apertures of the water holes (7111) on each wave-breaking plate (711) decrease in sequence from the water inlet direction to the water outlet direction.

4. The water pump test bench according to claim 2, characterized in that: The plurality of wave-breaking plates (711) divide the space inside the box body (71) into a water inlet chamber (701), a plurality of intermediate chambers (702) and a water outlet chamber (703); The water inlet chamber (701) is provided with a water inlet (7011) which is connected to the return pipe (5) and / or the water replenishment pump (6); The lower part of the water outlet chamber (703) is provided with a water outlet (7031) which is in communication with the circulating water tank (1).

5. The water pump test bench according to claim 1, characterized in that: The water pump frame (2) comprises: A cantilever beam (21), one end of which is fixed to the outer wall of the circulating water tank (1); A support seat (22) is arranged on the upper surface of the cantilever beam (21); The pressing device (23) is arranged on the cantilever beam (21) at one side of the support seat (22) and is used to press the water pump onto the support seat (22).

6. The water pump test bench according to claim 5, characterized in that: The upper surface of the support seat (22) is provided with a water pump receiving groove (221).

7. The water pump test bench according to claim 1, characterized in that: The water suction pipe (4) and / or the water return pipe (5) are provided with a detection module.

8. The water pump test bench according to claim 1, characterized in that: An operating panel (31) is provided at the upper portion of the water collecting box (3); The operating panel (31) is provided with a water leakage hole (311).

9. The water pump test bench according to claim 1, characterized in that: The water pump test bench also includes: A frame (8), wherein the circulating water tank (1) is arranged in the frame (8); A control box (9) is arranged on the top of the frame (8).

10. The water pump test bench according to claim 1, characterized in that: The wave absorbing device (7) and the overflow channel (11) are respectively located at two ends of a diagonal line in the circulating water tank (1).

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