Device for detecting sealing performance of copper-nickel sleeve

Abstract

The utility model discloses a device for detecting the sealing performance of a copper-nickel sleeve, which belongs to the field of sealing performance detection devices and comprises a test water tank, a test piece sleeve is fixedly connected in the test water tank, a connecting frame is movably mounted on the test water tank, an upper connector is fixedly connected onto the connecting frame, and a sealing box is fixedly connected onto the upper connector. An electronic pressure gauge is fixedly connected to the sealing box, the two ends of the pipe fitting are fixedly connected with the sealing sleeves of the upper connector and the lower connector, the test piece sleeve is immersed in liquid, the inflator pump injects air into the test piece sleeve, the electronic pressure gauge monitors the air pressure in the test piece sleeve in real time, and the situation that the injected air is too little or too much is avoided; the air pressure is large, part of air can be exhausted in time through the safety pipe, potential safety hazards are eliminated, the good sealing performance of the test piece sleeve is judged by observing whether bubbles are generated on the test piece sleeve or not and the air pressure value of the electronic pressure gauge is constant, and the result is more accurate.

Description

Technical Field

[0001] The utility model relates to the field of sealing detection devices, in particular to a copper-nickel sleeve sealing detection device. Background Art

[0002] Copper-nickel alloy pipe fittings are made of copper and nickel mixed in a certain proportion, and have excellent corrosion resistance and good mechanical properties. In the production of copper-nickel sleeves, a sealing detection device is required to ensure that the sleeve structure is sealed and has no pores. In the prior art, the public document number: CN211717720U discloses a pipe fitting sealing detection device, which can test multiple pipe fittings at the same time and can be adjusted according to pipe fittings of different models and sizes, and has strong practicality;

[0003] In this document, the tube is connected to an external air pump through a conduit, and air is injected into the tube to observe whether the gas escapes from the gap in the tube body and generates bubbles in the liquid to judge the sealing performance. Then the amount of gas injected into the tube body by the air pump is not easy to control. If too little gas is injected, the air pressure in the tube is small, and the gas flows to the upper position in the tube and will not escape from the gap in the tube body. If too much gas is injected, the air pressure in the tube is too high, which can easily cause the seal to fail, and the gas escapes from the connection to generate bubbles in the liquid. Therefore, the detection result is not accurate enough and needs to be improved. Utility Model Content

[0004] The main purpose of the utility model is to provide a copper-nickel casing sealing detection device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A copper-nickel casing sealing detection device comprises a test water tank, a test piece casing is fixedly connected inside the test water tank, a connecting frame is movably installed on the test water tank, an upper connecting head is fixedly connected to the connecting frame, a sealing box is fixedly connected to the upper connecting head, an electronic pressure gauge is fixedly connected to the sealing box, a lower connecting head is fixedly connected to the bottom surface of the test water tank, an inflation tube is fixedly connected to the lower position of the lower connecting head, an inflation pump is fixedly connected to the lower end of the inflation tube, a No. 1 bracket is fixedly connected to the bottom surface of the test water tank, the inflation pump is fixedly connected to the No. 1 bracket, a water storage tank is fixedly connected to the lower position of the No. 1 bracket, a water pump is fixedly connected to one side of the water storage tank, and a drainage pump is fixedly connected to the other side of the water storage tank.

[0007] Preferably, a support frame is fixedly connected to the back of the test water tank, a cylinder is fixedly connected to the support frame, and an output shaft of the cylinder is fixedly connected to the connecting frame.

[0008] Preferably, the upper connector and the lower connector are fixedly connected to sealing sleeves, and both ends of the test piece sleeve are fixedly connected to the sealing sleeves of the upper connector and the lower connector.

[0009] Preferably, a safety tube is fixedly connected to the side of the sealing box, and a safety valve is movably installed on the safety tube.

[0010] Preferably, a No. 1 valve and a one-way gas valve are movably mounted on the inflation tube, and the No. 1 valve is located below the one-way gas valve.

[0011] Preferably, a water outlet pipe is fixedly connected to the side of the test water tank, a water outlet valve is movably installed on the water outlet pipe, the water pump is fixedly connected to the water outlet pipe through a No. 1 water pump pipe, and the water pump is fixedly connected to the water storage tank through a No. 2 water pump pipe.

[0012] Preferably, the drain pump is fixedly connected to the water tank through a No. 1 drain pipe, and the drain pump is fixedly connected to a No. 2 drain pipe. The upper end of the No. 2 drain pipe is located above the test water tank, and the No. 2 drain pipe is fixedly connected to the test water tank through a side bracket.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, one end of the pipe is inserted into the lower connector, the upper connector is lowered downwards and installed with the other end of the pipe, and the cylinder is pushed downwards to keep the two ends of the pipe body and the sealing sleeve sealed, and then air is injected into the test piece sleeve, and clean water is injected into the test water tank to observe whether bubbles are generated on the test piece sleeve, so as to facilitate the air tightness test of the test piece sleeve;

[0015] In the utility model, the upper connecting head is communicated with the sealing box, and an electronic pressure gauge is provided on the sealing box for displaying the air pressure in the test piece casing in real time, so as to judge whether the gas in the tube is sufficient. When no bubbles are generated on the test piece casing, the air pressure value on the electronic pressure gauge remains constant, so it can be judged that the sealing performance of the test piece casing is good, and the test result is more accurate. In addition, the electronic pressure gauge monitors the air pressure in the tube in real time. When the air pressure is too high, part of the gas can be discharged in time through the safety tube to eliminate safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the cylinder, support frame and connecting frame of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the connecting frame of the utility model;

[0019] Figure 4 A schematic cross-sectional view of the inverted test water tank of the utility model.

[0020] In the figure: 1. test water tank; 2. test piece casing; 3. support frame; 4. cylinder; 5. connecting frame; 6. sealing box; 7. upper connecting head; 8. sealing sleeve; 9. electronic pressure gauge; 10. safety tube; 11. safety valve; 12. lower connecting head; 13. inflation tube; 14. No. 1 valve; 15. one-way gas valve; 16. water outlet pipe; 17. water outlet valve; 18. inflation pump; 19. No. 1 bracket; 20. water storage tank; 21. No. 1 water pump; 22. water pump; 23. No. 2 water pump; 24. drainage pump; 25. No. 1 drainage pipe; 26. No. 2 drainage pipe; 27. side bracket. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 4As shown, a copper-nickel casing sealing detection device comprises a test water tank 1, a test piece casing 2 is fixedly connected in the test water tank 1, a connecting frame 5 is movably installed on the test water tank 1, an upper connecting head 7 is fixedly connected to the connecting frame 5, a sealing box 6 is fixedly connected to the upper connecting head 7, an electronic pressure gauge 9 is fixedly connected to the sealing box 6, a lower connecting head 12 is fixedly connected to the bottom surface of the test water tank 1, an inflation tube 13 is fixedly connected to the lower position of the lower connecting head 12, an inflation pump 18 is fixedly connected to the lower end of the inflation tube 13, a No. 1 bracket 19 is fixedly connected to the bottom surface of the test water tank 1, the inflation pump 18 is fixedly connected to the No. 1 bracket 19, a support frame 3 is fixedly connected to the back of the test water tank 1, a cylinder 4 is fixedly connected to the support frame 3, an output shaft of the cylinder 4 is fixedly connected to the connecting frame 5, a sealing sleeve 8 is fixedly connected to the upper connecting head 7 and the lower connecting head 12, and both ends of the test piece casing 2 are fixedly connected to the sealing sleeves 8 of the upper connecting head 7 and the lower connecting head 12. Then, a safety tube 10 is fixedly connected to the side position of the sealing box 6, and a safety valve 11 is movably installed on the safety tube 10. A valve No. 14 and a one-way gas valve 15 are movably installed on the inflation tube 13, and the valve No. 14 is located below the one-way gas valve 15. By lifting and lowering the output shaft of the cylinder 4, the upper connector 7 and the test piece sleeve 2 are squeezed and installed against each other, so that the test piece sleeve 2 is fixedly connected to the sealing sleeve 8 of the upper connector 7 and the lower connector 12, thereby sealing both ends of the test piece sleeve 2, making it easy to install and seal the test piece sleeve 2, and injecting air into the test piece sleeve 2 through the inflation pump 18. A one-way gas valve 15 is provided on the inflation tube 13 to prevent excessive air pressure in the tube and gas reflux from damaging the inflation pump 18, so as to better protect the inflation pump 18. By observing that no bubbles are generated in the liquid of the test piece sleeve 2, and the value of the electronic pressure gauge 9 on the sealing box 6 is constant, it is judged that the sealing performance of the test piece sleeve 2 is good.

[0023] like Figure 1 , Figure 4As shown, a water tank 20 is fixedly connected to the lower position of the No. 1 bracket 19, a water pump 22 is fixedly connected to one side of the water tank 20, a drainage pump 24 is fixedly connected to the other side of the water tank 20, a water outlet pipe 16 is fixedly connected to the side position of the test water tank 1, a water outlet valve 17 is movably installed on the water outlet pipe 16, the water pump 22 is fixedly connected to the water outlet pipe 16 through the No. 1 water pump pipe 21, the water pump 22 is fixedly connected to the water tank 20 through the No. 2 water pump pipe 23, the drainage pump 24 is fixedly connected to the water tank 20 through the No. 1 drainage pipe 25, the drainage pump 24 is fixedly connected to the No. 2 drainage pipe 26, and the No. 2 drainage pipe 27 is fixedly connected to the No. 2 drainage pipe 28. The upper end of the No. 1 drain pipe 26 is located above the test water tank 1, and the No. 2 drain pipe 26 is fixedly connected to the test water tank 1 through the side bracket 27. The water outlet valve 17 is opened, so that the clean water in the test water tank 1 can be easily pumped into the water storage tank 20 through the water pump 22, so as to facilitate the installation and disassembly of the test piece sleeve 2 in the waterless test water tank 1. When the test piece sleeve 2 is installed and ready for testing, the clean water in the water storage tank 20 is discharged into the test water tank 1 again through the drain pump 24 to immerse the test piece sleeve 2, so as to facilitate the observation of whether bubbles will be generated in the liquid by the test piece sleeve 2 and judge the air tightness.

[0024] It should be noted that the utility model is a copper-nickel sleeve sealing detection device. The hardness of copper-nickel is good and can withstand the extrusion of the cylinder 4 without bending within a certain degree. When the test piece sleeve 2 is injected with air and the air pressure increases, the test piece sleeve 2 is not easy to deform or break. Therefore, the air tightness can be detected by expanding the gas in the test piece sleeve 2. One end of the test piece sleeve 2 is inserted into the sealing sleeve 8 of the lower connector 12, and then the output shaft of the cylinder 4 is retracted inward, so that the connecting frame 5 and the upper connector 7 are connected. The upper connector 7 and the sealing box 6 are lowered downward, the upper connector 7 is inserted into the upper end of the test piece sleeve 2, and the two ends of the test piece sleeve 2 are fixed and squeezed with the sealing sleeve 8 to maintain the seal, and then the drainage pump 24 is started to allow the clean water in the water storage tank 20 to enter the test water tank 1 through the No. 1 drainage pipe 25, the drainage pump 24 and the No. 2 drainage pipe 26, and the test piece sleeve 2 is immersed. The air pump 18 is started, and the No. 1 valve 14 is opened, so that the external gas enters the test piece sleeve through the inflation pipe 13. When the gas in the test piece casing 2 is small, the air pressure in the tube is small, and the air is continuously inflated by the air pump 18. When the value on the electronic pressure gauge 9 is large, the air pump 18 is stopped to avoid damaging the test piece casing 2 by continuous inflation, and the safety valve 11 can be opened to allow the gas in the sealing box 6 to be partially discharged through the safety tube 10, thereby eliminating the potential safety hazard. When no bubbles are generated in the liquid of the test piece casing 2 and the value on the electronic pressure gauge 9 remains constant for a long time, it can be judged that the air tightness of the test piece casing 2 is good, and the detection result is more accurate. The water pump 22 is started, the water outlet valve 17 is opened, and the liquid in the test water tank 1 is pumped back to the water storage tank 20. The connecting frame 5, the sealing box 6 and the upper connector 7 are moved upward, so as to facilitate the disassembly of the test piece casing 2, replace it with a new test piece casing 2, and test it again. The clean water is recycled, which can effectively reduce the waste of water resources.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It is only a preferred embodiment of the utility model, and its description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The embodiments can be changed, modified, replaced and deformed without departing from the principle and purpose of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A copper-nickel casing sealing detection device, comprising a test water tank (1), wherein a test piece casing (2) is fixedly connected to the test water tank (1), characterized in that: The test water tank (1) is movably provided with a connecting frame (5), the connecting frame (5) is fixedly connected with an upper connecting head (7), the upper connecting head (7) is fixedly connected with a sealing box (6), the sealing box (6) is fixedly connected with an electronic pressure gauge (9), the bottom surface of the test water tank (1) is fixedly connected with a lower connecting head (12), the lower part of the lower connecting head (12) is fixedly connected with an air charging tube (13), the lower end of the air charging tube (13) is fixedly connected with an air charging pump (18), the bottom surface of the test water tank (1) is fixedly connected with a No. 1 bracket (19), the air charging pump (18) is fixedly connected to the No. 1 bracket (19), the lower part of the No. 1 bracket (19) is fixedly connected with a water storage tank (20), one side of the water storage tank (20) is fixedly connected with a water pump (22), and the other side of the water storage tank (20) is fixedly connected with a drainage pump (24).

2. A copper-nickel casing sealing detection device according to claim 1, characterized in that: A support frame (3) is fixedly connected to the back of the test water tank (1), a cylinder (4) is fixedly connected to the support frame (3), and an output shaft of the cylinder (4) is fixedly connected to a connecting frame (5).

3. A copper-nickel casing sealing detection device according to claim 2, characterized in that: The upper connector (7) and the lower connector (12) are fixedly connected with a sealing sleeve (8), and the two ends of the test piece sleeve (2) are fixedly connected with the sealing sleeves (8) of the upper connector (7) and the lower connector (12).

4. A copper-nickel casing sealing detection device according to claim 3, characterized in that: A safety tube (10) is fixedly connected to the side of the sealing box (6), and a safety valve (11) is movably installed on the safety tube (10).

5. A copper-nickel casing sealing detection device according to claim 4, characterized in that: A valve No. 1 (14) and a one-way gas valve (15) are movably mounted on the inflation tube (13), and the valve No. 1 (14) is located below the one-way gas valve (15).

6. A copper-nickel casing sealing detection device according to claim 5, characterized in that: A water outlet pipe (16) is fixedly connected to the side of the test water tank (1), and a water outlet valve (17) is movably installed on the water outlet pipe (16). The water pump (22) is fixedly connected to the water outlet pipe (16) through a No. 1 water pump (21), and the water pump (22) is fixedly connected to the water storage tank (20) through a No. 2 water pump (23).

7. A copper-nickel casing sealing detection device according to claim 6, characterized in that: The drainage pump (24) is fixedly connected to the water storage tank (20) via a No. 1 drainage pipe (25), and the drainage pump (24) is fixedly connected to a No. 2 drainage pipe (26). The upper end of the No. 2 drainage pipe (26) is located above the test water tank (1), and the No. 2 drainage pipe (26) is fixedly connected to the test water tank (1) via a side bracket (27).

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