Air conditioner pressure switch sealing performance detection device

Abstract

The utility model relates to the sealing performance detection field, and discloses an air conditioner pressure switch sealing performance detection device comprising a machine body, the surface of the machine body is fixedly connected with a detection bench, the surface of the detection bench is provided with a placing hole, the top of the detection bench is fixedly connected with a fixed plate, the side wall of the fixed plate is fixedly connected with an air cylinder, and the air cylinder is fixedly connected with an air cylinder. An air cylinder is fixedly connected to the outer wall of the machine body, a clamping plate is fixedly connected to the output end of the air cylinder, an air pump is fixedly connected to the outer wall of the machine body, a telescopic pipe is fixedly connected to the output end of the air pump, a lantern ring is fixedly connected to the end of the telescopic pipe, a sealing ring is fixedly connected to the inner wall of the lantern ring, and a sealing assembly is arranged in the lantern ring. According to the utility model, through the arrangement of the air cylinder, the clamping plate, the air pump and other structures, the lantern ring is directly sleeved outside the copper pipe of the air conditioner pressure switch and is subjected to sealing treatment, and then the sealing performance is detected, so that the detection convenience and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing performance testing, and in particular to a device for testing the sealing performance of air conditioning pressure switches. Background Technology

[0002] Air conditioning pressure switches are key safety devices in air conditioning systems used to monitor and control refrigerant pressure. By sensing changes in pressure within the pipeline, they trigger circuit switching to protect the system's safe operation. The copper pipe of the air conditioning pressure switch is a crucial component connecting it to the refrigeration system. The copper pipe transmits the refrigerant pressure from the air conditioning refrigeration system, such as the compressor, condenser, and evaporator, to the pressure-sensing element of the pressure switch, enabling it to sense real-time pressure changes.

[0003] The copper tubes of pressure switches need to be tested for sealing performance. The main purpose is to prevent refrigerant leakage. If there is leakage at the copper tube joint or welding point, the pressure value sensed by the pressure switch will be lower than the actual system pressure, causing the protection function to be delayed or fail. Well-sealed copper tubes can reduce system pressure fluctuations and reduce fatigue wear of mechanical parts.

[0004] In existing technologies, copper pipes are usually connected to inflation equipment for inflation testing. However, the connecting pipes of inflation equipment cannot accommodate copper pipes of different sizes. The difficulty in matching the copper pipes with the connecting pipes of inflation equipment makes it impossible to guarantee the sealing performance, which will affect the testing of the sealing performance of the copper pipes. Therefore, an air conditioning pressure switch sealing performance testing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an air conditioner pressure switch sealing performance testing device, which aims to improve the problem that the connecting pipe of the air filling equipment of the existing air conditioner pressure switch sealing performance testing device is difficult to adapt to copper pipes of different sizes, thus affecting the copper pipe sealing performance testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air conditioner pressure switch sealing performance testing device, comprising a body, a testing platform fixedly connected to the surface of the body, a placement hole opened on the surface of the testing platform, a fixing plate fixedly connected to the top of the testing platform, a cylinder fixedly connected to the side wall of the fixing plate, a clamping plate fixedly connected to the output end of the cylinder, an air pump fixedly connected to the outer wall of the body, a telescopic tube fixedly connected to the output end of the air pump, a collar fixedly connected to the end of the telescopic tube, a sealing ring fixedly connected to the inner wall of the collar, a sealing component provided inside the collar, and a fixing component provided on the outer wall of the collar.

[0007] As a further description of the above technical solution:

[0008] The placement hole is located at the center of the testing platform.

[0009] As a further description of the above technical solution:

[0010] The sealing assembly includes an annular airbag, the inner wall of which is fixedly connected to a connecting tube, and the outer wall of which is fixedly connected to a micro pump.

[0011] As a further description of the above technical solution:

[0012] The outer surface of the annular airbag is fixedly connected to the inner surface of the collar, and the outer wall of the micro pump is fixedly connected to the outer wall of the machine body.

[0013] As a further description of the above technical solution:

[0014] The fixing component includes a hanging ring, and a hook is fixedly connected to the outer wall of the machine body.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the hanging ring is fixedly connected to the outer wall of the collar.

[0017] As a further description of the above technical solution:

[0018] A telescopic rod is fixedly connected to the inner surface of the collar, a spring is sleeved on the outer wall of the telescopic rod, an annular plate is fixedly connected to the end of the spring, and an anti-slip pad is fixedly connected to the outer wall of the annular plate.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the annular plate away from the anti-slip pad is fixedly connected to the movable end of the telescopic rod.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by combining a cylinder, clamping plate, air pump, telescopic tube, collar, sealing ring and sealing components, the collar is directly fitted onto the outside of the copper tube of the air conditioner pressure switch and sealed, and then the sealing performance is tested, which improves the convenience and accuracy of the test.

[0023] 2. In this utility model, by setting up structures such as springs, annular plates, telescopic rods and anti-slip pads, a certain pre-tightening force can be applied to the copper tube even when the annular airbag is not inflated, which initially reduces the gap between the copper tube and the collar. The pre-tightening force, together with the sealing of the airbag, improves the sealing degree between the copper tube and the collar, ensuring the subsequent testing effect. Attached Figure Description

[0024] Figure 1This is a side view of the main structure of an air conditioner pressure switch sealing performance testing device proposed in this utility model;

[0025] Figure 2 This is a bottom view schematic diagram of the main structure of an air conditioner pressure switch sealing performance testing device proposed in this utility model;

[0026] Figure 3 This is a partial cross-sectional view of an air conditioner pressure switch sealing performance testing device proposed in this utility model;

[0027] Figure 4 This utility model proposes an air conditioning pressure switch sealing performance testing device. Figure 3 Enlarged schematic diagram of region A in the middle.

[0028] Legend:

[0029] 1. Body; 2. Testing platform; 3. Placement hole; 4. Fixing plate; 5. Cylinder; 6. Clamping plate; 7. Air pump; 8. Telescopic tube; 9. Collar; 10. Annular airbag; 11. Sealing ring; 12. Connecting tube; 13. Miniature pump; 14. Hanging ring; 15. Hook; 16. Telescopic rod; 17. Spring; 18. Annular plate; 19. Anti-slip mat. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-3This utility model provides an embodiment of an air conditioner pressure switch sealing performance testing device, comprising a body 1, a testing platform 2 fixedly connected to the surface of the body 1, a placement hole 3 for the air conditioner pressure switch to pass through, wherein the copper tube is positioned at the bottom when placing the air conditioner pressure switch, and the placement hole 3 is located at the center of the testing platform 2. A fixing plate 4 is fixedly connected to the top of the testing platform 2, a cylinder 5 is fixedly connected to the side wall of the fixing plate 4, and a clamping plate 6 is fixedly connected to the output end of the cylinder 5. Two sets of fixing plates 4, cylinders 5, and clamping plates 6 are provided, with the center of the testing platform 2 as the center. The axis is symmetrical and mirrored. Two sets of clamping plates 6 clamp and fix the two sides of the air conditioner pressure switch. A sponge pad is provided on the opposite side of the two sets of clamping plates 6 to maintain the clamping force while avoiding clamping damage to the surface of the air conditioner pressure switch. An air pump 7 is fixedly connected to the outer wall of the body 1. A telescopic tube 8 is fixedly connected to the output end of the air pump 7. A collar 9 is fixedly connected to the end of the telescopic tube 8. The collar 9 connects the telescopic tube 8 to the copper pipe. A sealing ring 11 is fixedly connected to the inner wall of the collar 9. Two sets of sealing rings 11 are provided, and the two sets of sealing rings 11 are equidistantly distributed in the collar 9 with a certain gap.

[0032] Reference Figures 1-3 The collar 9 has a sealing assembly inside, which includes an annular airbag 10. The outer surface of the annular airbag 10 is fixedly connected to the inner surface of the collar 9. The annular airbag 10 is located in the gap between the two sets of sealing rings 11. A connecting tube 12 is fixedly connected to the inner wall of the annular airbag 10. A micro pump 13 is fixedly connected to the outer wall of the connecting tube 12. The outer wall of the micro pump 13 is fixedly connected to the outer wall of the body 1. The collar 9 has a fixing assembly on its outer wall, which includes a hanging ring 14. The outer wall of the hanging ring 14 is fixedly connected to the outer wall of the collar 9. A hook 15 is fixedly connected to the outer wall of the body 1. The hanging ring 14 can be hung on the hook 15 to fix the collar 9.

[0033] Reference Figure 4 A telescopic rod 16 is fixedly connected to the inner surface of the collar 9. A spring 17 is sleeved on the outer wall of the telescopic rod 16. An annular plate 18 is fixedly connected to the end of the spring 17. An anti-slip pad 19 is fixedly connected to the outer wall of the annular plate 18. The outer wall of the annular plate 18 away from the anti-slip pad 19 is fixedly connected to the movable end of the telescopic rod 16. The elastic force of the spring 17 can be compressed after being squeezed by the copper tube. The telescopic rod 16 can adapt to copper tubes of different sizes for telescopic extension and retraction. The two sets of annular plates 18 fit against both sides of the copper tube. The anti-slip pad 19 increases the friction between the annular plate 18 and the outer wall of the copper tube to maintain the clamping force.

[0034] Working principle: The air conditioning pressure switch is passed through the placement hole 3. Two sets of cylinders 5 control two sets of clamping plates 6 to move closer together until the air conditioning pressure switch is clamped and fixed on both sides. The collar 9 is gripped to allow the hanging ring 14 to disengage from the hook 15. The collar 9 is then placed on the opening of the copper pipe. The compression force of the copper pipe causes the telescopic rod 16 and spring 17 to contract, so that the two sets of annular plates 18 provide pre-tightening force to the copper pipe. The sealing ring 11 is made of rubber, and its own elasticity can increase the sealing between the copper pipe and the collar 9. Then, the micro pump 13 is turned on, and the micro pump 13 injects air into the annular airbag 10 through the connecting pipe 12. Inside, the annular airbag 10 gradually expands. The annular airbag 10 can adaptively expand according to the shape and size of the copper pipe, tightly fitting the surface of the copper pipe, forming a relatively uniform and effective sealing layer between the copper pipe and the collar 9. Finally, the air pump 7 is turned on, and nitrogen or helium is injected into the copper pipe through the telescopic tube 8. The external flow meter or pressure sensor is used to determine whether there is leakage in the copper pipe interface, internal valve body, etc., or the small leakage point is located by applying soapy water, or the transparent box filled with clean water is placed at the bottom of the test platform 2 to observe whether bubbles are generated, thereby realizing the test of the air conditioning pressure switch sealing performance.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air conditioning pressure switch sealing performance testing device, comprising a body (1), characterized in that: A testing platform (2) is fixedly connected to the surface of the machine body (1). A placement hole (3) is opened on the surface of the testing platform (2). A fixing plate (4) is fixedly connected to the top of the testing platform (2). A cylinder (5) is fixedly connected to the side wall of the fixing plate (4). A clamping plate (6) is fixedly connected to the output end of the cylinder (5). An air pump (7) is fixedly connected to the outer wall of the machine body (1). A telescopic tube (8) is fixedly connected to the output end of the air pump (7). A collar (9) is fixedly connected to the end of the telescopic tube (8). A sealing ring (11) is fixedly connected to the inner wall of the collar (9). A sealing component is provided inside the collar (9). A fixing component is provided on the outer wall of the collar (9).

2. The air conditioning pressure switch sealing performance testing device according to claim 1, characterized in that: The placement hole (3) is located at the center of the testing platform (2).

3. The air conditioning pressure switch sealing performance testing device according to claim 1, characterized in that: The sealing assembly includes an annular airbag (10), the inner wall of which is fixedly connected to a connecting tube (12), and the outer wall of which is fixedly connected to a micro pump (13).

4. The air conditioning pressure switch sealing performance testing device according to claim 3, characterized in that: The outer surface of the annular airbag (10) is fixedly connected to the inner surface of the collar (9), and the outer wall of the micro pump (13) is fixedly connected to the outer wall of the body (1).

5. The air conditioning pressure switch sealing performance testing device according to claim 1, characterized in that: The fixing component includes a hanging ring (14), and a hook (15) is fixedly connected to the outer wall of the body (1).

6. The air conditioning pressure switch sealing performance testing device according to claim 5, characterized in that: The outer wall of the hanging ring (14) is fixedly connected to the outer wall of the collar (9).

7. The air conditioning pressure switch sealing performance testing device according to claim 1, characterized in that: A telescopic rod (16) is fixedly connected to the inner surface of the collar (9), and a spring (17) is sleeved on the outer wall of the telescopic rod (16). An annular plate (18) is fixedly connected to the end of the spring (17), and an anti-slip pad (19) is fixedly connected to the outer wall of the annular plate (18).

8. The air conditioning pressure switch sealing performance testing device according to claim 7, characterized in that: The outer wall of the annular plate (18) away from the anti-slip pad (19) is fixedly connected to the movable end of the telescopic rod (16).

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