Withstand voltage insulation detection device for amphibious pump

Abstract

The utility model relates to the technical field of water pump detection, in particular to an amphibious pump withstand voltage insulation detection device, which comprises a detection box and a pressure pump, a pump discharge port is arranged on the top wall of the detection box, a cover plate is arranged at the pump discharge port of the top wall of the detection box through a bolt cover, and a sealing ring is arranged on the plate surface, close to the top wall of the detection box, of the cover plate. The sealing ring is located on the outer ring of the pump placing opening, a wire groove is formed in the outer top wall of the detection box, one end of the wire groove is communicated with the pump placing opening, a sealing soft cushion is arranged in the wire groove, and the shape of the sealing soft cushion is matched with that of the cross section of the wire groove; a pressurizing pipe is communicated between the detection box and the pumping-out end of the pressurizing pump, a valve is arranged on the pressurizing pipe, a communicating pipe is arranged on the side wall of the detection box, the two ends of the communicating pipe are communicated with the detection box, one end of the communicating pipe extends into the detection box, and a water pressure gauge is arranged on the communicating pipe. According to the utility model, the insulation performance of the amphibious pump under different water depth conditions can be detected.

Description

Technical Field

[0001] This utility model relates to the field of water pump testing technology, specifically to a pressure resistance insulation testing device for amphibious pumps. Background Technology

[0002] The amphibious pump uses a motor to drive an impeller, which generates centrifugal force during rotation. This force draws water in through the inlet, accelerates it, and discharges it through the outlet. When used in water, the pump uses a jet mechanism for both intake and discharge; when used on land, the design of the through-hole and outlet cover ensures proper operation. Amphibious pumps are suitable for various applications, including water circulation and filtration in aquariums and ponds, as well as sand removal in mines. Their design allows for operation both in water and on land, greatly improving convenience and flexibility.

[0003] After manufacturing, amphibious pumps require insulation testing to ensure safe operation. This is typically done using instruments such as megohmmeters. The operating depth of an amphibious pump varies depending on its intended use, and the insulation performance requirements differ depending on the depth. However, conventional insulation resistance testing methods are not suitable for assessing the insulation performance of amphibious pumps at different water depths. Utility Model Content

[0004] The purpose of this invention is to provide a pressure-resistant insulation testing device for amphibious pumps, which aims to improve the problem that it is inconvenient to test the insulation performance of amphibious pumps under different water depths in the existing technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An amphibious pump withstand voltage insulation testing device includes a testing box and a pressurizing pump. The testing box has a pump outlet on its top wall, and a cover plate is bolted to the outlet. A sealing ring is located on the surface of the cover plate near the top wall of the testing box, outside the outlet. A groove is formed on the outer top wall of the testing box, with one end connected to the outlet. A sealing gasket is placed inside the groove, matching the cross-sectional shape of the groove. A pressurizing pipe connects the testing box to the pump outlet of the pressurizing pump, and a valve is installed on the pressurizing pipe. A connecting pipe is located on the side wall of the testing box, with both ends connected to the testing box, and one end extending into the testing box. A pressure gauge is installed on the connecting pipe.

[0007] Furthermore, it also includes a base plate, on which the detection box and the pressurizing pump are located. A water storage tank is also provided on the base plate. The pump inlet of the pressurizing pump is connected to the water storage tank through a pipeline. Lifting lugs are provided at the four corners of the base plate.

[0008] Furthermore, the bottom of the base plate is equipped with multiple casters.

[0009] Furthermore, a positioning frame is provided on the top wall of the detection box. The positioning frame is located on the outer ring of the pump outlet. The cover plate is located inside the positioning frame, and the shape and size of the cover plate are matched with the inner ring of the positioning frame. The cover plate is also provided with a handle. A notch is provided on the positioning frame. The notch is located above the wire groove and communicates with the wire groove.

[0010] Furthermore, a placement box is provided on the outer top wall of the testing box. The top wall and one side wall of the placement box are both open. A megohmmeter is placed inside the placement box, and the handle of the megohmmeter extends to the outside of the placement box through the opening in the side wall of the placement box.

[0011] Furthermore, a protective cover is hinged to the opening on the top wall of the placement box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, when testing the insulation performance of the amphibious pump, first open the cover of the testing box, then place the amphibious pump into the testing box through the discharge port. Connect the pump outlet of the amphibious pump to one end of the connecting pipe extending into the testing box through a pipeline. Then, lead the power cord of the amphibious pump out from the discharge port and place it in the wire trough. Cover the box and seal the discharge port. When there is no water in the testing box, the land-based working environment of the amphibious pump can be simulated. At this time, the insulation resistance between two phases of the power cord of the amphibious pump can be directly measured using a megohmmeter. The process involves testing; then connecting the pump inlet of the booster pump to the water source via a pipeline, starting the booster pump, and supplying water to the testing tank. When the water level in the testing tank rises, it will submerge the connecting pipe. Subsequently, a pressure gauge is used to detect the water pressure inside the testing tank. When the water pressure inside the testing tank reaches a specific value, the valve and the booster pump are closed. The insulation resistance value of the amphibious pump under the current water pressure condition is detected by a megohmmeter. The higher the water pressure inside the testing tank, the more it can simulate the water pressure conditions under which the amphibious pump works underwater. By changing the water pressure inside the testing tank, the insulation performance of the amphibious pump under different water depth conditions can be tested.

[0014] 2. After filling the test chamber with water using a pressure pump, connect the power cord of the amphibious pump to the power supply and start the amphibious pump. The amphibious pump will pump the water in the test chamber back into the test chamber through the connecting pipe. The pressure value at the outlet can be measured using a water pressure gauge to determine its pressure resistance. The voltage can also be adjusted using a frequency converter or other means to change the pressure value at the outlet and thus test its pressure resistance performance. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural diagram of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of section A in the middle;

[0019] The attached diagram shows the markings and corresponding component names:

[0020] 1. Testing box; 2. Pressure pump; 3. Pump outlet; 4. Cover plate; 5. Cable tray; 6. Sealing gasket; 7. Pressure pipe; 8. Valve; 9. Connecting pipe; 10. Water pressure gauge; 11. Base plate; 12. Water storage tank; 13. Lifting lug; 14. Casters; 15. Positioning frame; 16. Handle; 17. Notch; 18. Placement box; 19. Megohmmeter; 20. Protective cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] A withstand voltage insulation testing device for amphibious pumps, referring to Figure 1 , Figure 2 , Figure 3The test chamber includes a test chamber 1 and a pressurizing pump 2. The test chamber 1 has a pump outlet 3 on its top wall. A cover plate 4 is bolted to the pump outlet 3 on the top wall of the test chamber 1. A sealing ring (not shown in the attached drawing) is provided on the surface of the cover plate 4 near the top wall of the test chamber 1. The sealing ring is located on the outer ring of the pump outlet 3. When the cover plate 4 covers the pump outlet 3, the sealing ring is used to seal the pump outlet 3. A wire groove 5 is provided on the outer top wall of the test chamber 1. One end of the wire groove 5 is connected to the pump outlet 3. A sealing gasket 6 is provided in the wire groove 5. The sealing gasket 6 matches the cross-sectional shape of the wire groove 5. A pressurizing pipe 7 is connected between the test chamber 1 and the pump outlet of the pressurizing pump 2. A valve 8 is provided on the pressurizing pipe 7. A connecting pipe 9 is provided on the side wall of the test chamber 1. Both ends of the connecting pipe 9 are connected to the test chamber 1, and one end of the connecting pipe 9 extends into the interior of the test chamber 1. A water pressure gauge 10 is provided on the connecting pipe 9.

[0024] In this scheme, when testing the insulation performance of the amphibious pump, first open the cover plate 4 of the test box 1, then put the amphibious pump into the test box 1 through the pump outlet 3, connect the pump outlet end of the amphibious pump to the end of the connecting pipe 9 that extends into the test box 1 through the pipeline, then lead out the power cord of the amphibious pump from the pump outlet 3 and put the power cord into the wire trough 5, cover the cover plate 4, and then close the pump outlet 3; when there is no water in the test box 1, the working environment of the amphibious pump on land can be simulated. At this time, the insulation resistance between two phases in the power cord of the amphibious pump can be directly tested through the megohmmeter 19; Then, the pump inlet of the booster pump 2 and the water source are connected through the pipeline, and the booster pump 2 is started. The booster pump 2 supplies water to the test box 1. When the water level in the test box 1 rises, it will submerge the connecting pipe 9. Then, the water pressure gauge 10 is used to detect the water pressure inside the test box 1. When the water pressure inside the test box 1 reaches a specific value, the valve 8 and the booster pump 2 are closed. The insulation resistance value of the amphibious pump under the current water pressure condition is detected by the megohmmeter 19. The higher the water pressure inside the test box 1, the more it can simulate the water pressure conditions of the amphibious pump working in deeper water. By changing the water pressure inside the test box 1, the insulation performance of the amphibious pump under different water depth conditions can be detected.

[0025] In addition, after filling the test tank 1 with water using the pressure pump 2, the power cord of the amphibious pump is connected to the power supply, and the amphibious pump is started. The amphibious pump pumps the water in the test tank 1 back into the test tank 1 through the connecting pipe 9. The pressure value at the outlet end can be detected by the water pressure gauge 10, thereby determining its pressure resistance. Its voltage can also be adjusted by means of frequency converter, etc., to change the pressure value at the outlet end, thereby testing its pressure resistance performance.

[0026] Example 2

[0027] Based on Example 1, in this example, refer to Figure 1 , Figure 2The withstand voltage insulation testing device also includes a base plate 11, a testing box 1 and a pressurizing pump 2, both located on the base plate 11, and a water storage tank 12 is also provided on the base plate 11. The pump inlet of the pressurizing pump 2 is connected to the water storage tank 12 through a pipeline, and lifting lugs 13 are provided at the four corners of the base plate 11.

[0028] This solution integrates the test box 1, the pressurizing pump 2, and the water storage tank 12 onto the base plate 11, facilitating centralized hoisting and transfer of the withstand voltage insulation test device.

[0029] Furthermore, the bottom of the base plate 11 is equipped with multiple casters 14, which facilitates the direct movement and relocation of the withstand voltage insulation testing device on flat ground.

[0030] Example 3

[0031] Based on Example 1, in this example, refer to Figure 1 , Figure 2 , Figure 3 A positioning frame 15 is provided on the outer top wall of the testing box 1. The positioning frame 15 is located on the outer ring of the pump outlet 3, and the cover plate 4 is located inside the positioning frame 15. The shape and size of the cover plate 4 match the inner ring of the positioning frame 15. The cover plate 4 is also provided with a handle 16. A notch 17 is opened on the positioning frame 15. The notch 17 is located above the wire groove 5 and communicates with the wire groove 5. The positioning frame 15 can be square or rectangular, which facilitates the positioning of the cover plate 4 and enables the cover plate 4 to be quickly aligned with the bolt holes of the testing box 1, thereby facilitating the quick fixing of the cover plate 4.

[0032] Example 4

[0033] Based on Example 1, in this example, refer to Figure 1 , Figure 2 A placement box 18 is provided on the outer top wall of the testing box 1. Both the top and one side wall of the placement box 18 are open. A megohmmeter 19 is placed inside the placement box 18, and the handle of the megohmmeter 19 extends to the outside of the placement box 18 through the opening in the side wall. The megohmmeter 19 is placed inside the placement box 18, and a protective cover 20 is hinged to the opening in the top wall of the placement box 18. The protective cover 20 provides a certain degree of protection for the megohmmeter 19. Opening the protective cover 20 allows the megohmmeter 19 to be used directly to test the insulation resistance value of the amphibious pump power cord.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A withstand voltage insulation testing device for an amphibious pump, characterized in that: The test chamber includes a test chamber (1) and a pressurizing pump (2). The test chamber (1) has a pump outlet (3) on its top wall. A cover plate (4) is bolted to the pump outlet (3) on the top wall of the test chamber (1). A sealing ring is provided on the surface of the cover plate (4) near the top wall of the test chamber (1). The sealing ring is located on the outer ring of the pump outlet (3). A wire groove (5) is provided on the outer top wall of the test chamber (1). One end of the wire groove (5) is connected to the pump outlet (3). A sealing ring is provided in the wire groove (5). A soft pad (6) is provided, the sealing soft pad (6) is matched with the cross-sectional shape of the wire groove (5); a pressurizing pipe (7) is connected between the test box (1) and the pump outlet of the pressurizing pump (2), a valve (8) is provided on the pressurizing pipe (7), a connecting pipe (9) is provided on the side wall of the test box (1), both ends of the connecting pipe (9) are connected to the test box (1), and one end of the connecting pipe (9) extends into the interior of the test box (1), and a water pressure gauge (10) is provided on the connecting pipe (9).

2. The amphibious pump withstand voltage insulation testing device according to claim 1, characterized in that: It also includes a base plate (11), the detection box (1) and the pressurizing pump (2) are both located on the base plate (11), a water storage tank (12) is also provided on the base plate (11), the pump inlet of the pressurizing pump (2) is connected to the water storage tank (12) through a pipeline, and lifting lugs (13) are provided at the four corners of the base plate (11).

3. The amphibious pump withstand voltage insulation testing device according to claim 2, characterized in that: The bottom of the base plate (11) is provided with multiple casters (14).

4. The amphibious pump withstand voltage insulation testing device according to claim 1, characterized in that: A positioning frame (15) is provided on the top wall of the test box (1). The positioning frame (15) is located on the outer ring of the pump outlet (3). The cover plate (4) is located inside the positioning frame (15), and the shape and size of the cover plate (4) are matched with the inner ring of the positioning frame (15). The cover plate (4) is also provided with a handle (16). A notch (17) is opened on the positioning frame (15). The notch (17) is located above the wire groove (5) and communicates with the wire groove (5).

5. The amphibious pump withstand voltage insulation testing device according to claim 1, characterized in that: The top wall of the test box (1) is provided with a placement box (18). The top wall and one side wall of the placement box (18) are open. A megohmmeter (19) is placed inside the placement box (18). The handle of the megohmmeter (19) extends to the outside of the placement box (18) through the opening of the side wall of the placement box (18).

6. The amphibious pump withstand voltage insulation testing device according to claim 5, characterized in that: The top wall opening of the placement box (18) is hinged with a cover (20).

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