Device for detecting tightness of instrument

Abstract

The utility model relates to the field of instrument sealing performance detection, in particular to a device for detecting the sealing performance of an instrument, and the device comprises a water tank; the water inlet end of the pressurizing pump is communicated with the water tank; simulation ball valves are arranged at the two ends of the simulation pipeline respectively; the mounting part is formed on the simulation pipeline and is positioned between the two simulation ball valves; the plurality of connecting pipes with different lengths are respectively arranged on the mounting part; the test ball valve is arranged on the connecting pipe and is used for connecting a test instrument; and the circulating pipe is used for connecting the pressure pump with the simulation pipeline and connecting the simulation pipeline with the water tank, and is rotationally connected with the simulation pipeline. According to the invention, the plurality of connecting pipes with different lengths are arranged on the simulation pipeline, so that the simulation pipeline can adapt to the to-be-tested instruments with different tail lengths, the sealing performance of the plurality of to-be-tested instruments with different tail lengths can be detected on the same simulation pipeline at the same time, the detection efficiency is greatly improved, and the detection cost is reduced.

Description

Technical Field

[0001] This application relates to the field of instrument sealing performance testing, and in particular to an apparatus for testing instrument sealing performance. Background Technology

[0002] Platinum resistance thermometers or temperature transmitters are important temperature sensing components in flow meters or heat meters. They are often used in high-temperature and high-pressure environments, so the sealing performance of their bushings is also one of the important testing indicators.

[0003] Currently, in the use of the above-mentioned instruments, due to the different pipe diameters of the pipes to be tested, the length of the instrument tail that needs to be inserted into the pipe varies. Therefore, when testing the sealing performance of platinum resistance thermometers or temperature transmitters, since there are various instruments with different tail lengths, it is necessary to set up various installation environments with corresponding lengths to simulate the working conditions of the instrument in actual use. This requires having multiple sealing performance testing devices, resulting in high testing costs and low testing efficiency. Summary of the Invention

[0004] To improve the efficiency of instrument sealing tests, this application provides a device for testing instrument sealing. By setting multiple connecting pipes of different lengths on a simulated pipeline, it can accommodate instruments with different tail lengths. This allows for simultaneous testing of the sealing of multiple instruments with different tail lengths on the same simulated pipeline, greatly improving testing efficiency and reducing testing costs.

[0005] This application provides a device for detecting the sealing performance of instruments, which adopts the following technical solution:

[0006] An apparatus for detecting the sealing performance of an instrument, comprising:

[0007] Water tank;

[0008] The booster pump has its inlet connected to the water tank.

[0009] Simulated pipeline, with simulated ball valves at both ends;

[0010] The mounting section is formed on the simulated pipeline and is located between two simulated ball valves;

[0011] Multiple connecting pipes of different lengths are respectively installed on the mounting part;

[0012] A test ball valve, located on the connecting pipe, is used to connect test instruments; and

[0013] The circulation pipe is used to connect the booster pump to the simulated pipeline and the simulated pipeline to the water tank, and is rotatably connected to the simulated pipeline.

[0014] Preferably, the water tank is equipped with a heating wire for heating the water.

[0015] Preferably, the system also includes a water collection tank and a recovery pump. The water collection tank is located directly below the simulated pipeline, the inlet of the recovery pump is connected to the water collection tank, and the outlet of the recovery pump is connected to the water tank.

[0016] Preferably, it further includes a support and a branch conversion plate, the branch conversion plate is disposed on the support and rotates on the support, and the two ends of the branch conversion plate are respectively connected to the simulated pipe and the circulation pipe. The branch conversion plate is rotatably connected to the circulation pipe, and the number of simulated pipes is three, all of which are connected to the branch conversion plate.

[0017] Preferably, the bracket is rotatably connected to two support wheels for supporting the branch conversion disc, and the two support wheels are respectively located on the lower side of the branch conversion disc.

[0018] Preferably, a drive gear is rotatably connected to the bracket, a driven gear is fixed on the branch conversion disk, the driven gear meshes with the drive gear, and a crank is provided on the drive gear.

[0019] Preferably, the simulated pipeline is equipped with a pressure relief valve, which is located on the mounting part.

[0020] Preferably, the simulated pipeline is equipped with a pressure gauge, a temperature gauge, and an exhaust valve.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] 1. This application sets multiple connecting pipes of different lengths on a simulated pipeline, thereby enabling it to accommodate instruments under test with different tail lengths. This allows for the simultaneous testing of the sealing performance of multiple instruments under test with different tail lengths on the same simulated pipeline, greatly improving testing efficiency and reducing testing costs.

[0023] 2. By setting a heating wire, this application makes the simulated water temperature in the pipeline during testing closer to the actual operating conditions of the instrument, thereby improving the authenticity and effectiveness of the instrument's sealing performance test.

[0024] 3. By setting up a water collection tank and a recovery pump, this application enables the water discharged from the simulated pipeline after the instrument sealing test to be re-extracted into the water tank for reuse, thereby reducing the waste of water resources.

[0025] 4. This application greatly improves the detection efficiency by setting up a branch conversion disk and three simulated pipelines, so that one simulated pipeline is being detected while the other two simulated pipelines are being disassembled and assembled respectively.

[0026] 5. This application, by setting up a driving gear, a driven gear, and a crank, makes it easier to rotate the branch conversion disc to adjust the position of the three simulated pipelines and the instruments to be tested installed on them. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application.

[0028] Figure 2 This is a partial structural schematic diagram of the device in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 11. Water tank; 12. Booster pump; 13. Simulated pipe; 14. Simulated ball valve; 15. Mounting part; 16. Connecting pipe; 17. Test ball valve; 18. Circulation pipe; 19. Heating wire; 20. Water collection tank; 21. Recovery pump; 22. Bracket; 23. Branch conversion disc; 24. Support wheel; 25. Drive gear; 26. Driven gear; 27. Handle; 28. Pressure relief valve; 29. ​​Pressure gauge; 30. Thermometer; 31. Air vent valve. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a device for detecting the sealing performance of instruments.

[0032] Reference Figure 1 The device includes a water tank 11, a pressurizing pump 12, a simulated pipe 13, a simulated ball valve 14, a mounting part 15, a connecting pipe 16, a test ball valve 17, and a circulation pipe 18.

[0033] The interior of water tank 11 is used to hold the liquid to be tested, such as water.

[0034] The inlet of the booster pump 12 is connected to the interior of the water tank 11.

[0035] The simulated pipe 13 is used to simulate the pipe in actual application. There are two simulated ball valves 14, which are located at both ends of the simulated pipe 13 respectively, and the two simulated ball valves 14 are used to control the flow of water in and out of the simulated pipe 13.

[0036] Reference Figure 1 There are multiple mounting parts 15, which are evenly arranged on the outer wall of the simulated pipeline 13 and are arranged in parallel on the simulated pipeline 13. The multiple mounting parts 15 are located between two simulated ball valves 14.

[0037] The connecting pipe 16 is installed on the mounting part 15. There are multiple connecting pipes 16, and the lengths of the multiple connecting pipes 16 are different. The length of each connecting pipe 16 can be set according to actual needs to ensure that the test instrument is inserted into the simulation pipe 13 to the same depth.

[0038] The test ball valve 17 is threaded onto the connecting pipe 16, and the other end of the test ball valve 17 is used to connect to the test instrument.

[0039] The circulation pipe 18 is a pipe used for the circulation of water in the entire device. The circulation pipe 18 is used to connect the booster pump 12 and the simulated pipe 13, as well as the simulated pipe 13 and the water tank 11.

[0040] Furthermore, referring to Figure 1 In order to more realistically simulate the operating conditions of the instrument's sealing performance, a heating wire 19 is also provided in the water tank 11. The heating wire 19 can heat the water in the water tank 11 and heat the water to the temperature when the instrument is actually used or slightly higher than that temperature by 3 to 5 degrees.

[0041] The device also includes a water collection tank 20 and a recovery pump 21. The water collection tank 20 is located directly below the simulated pipe 13 and is used to collect water leaking from the simulated pipe 13 or water generated after disassembling the instrument after testing its sealing performance. The inlet of the recovery pump 21 is connected to the water collection tank 20, and the outlet of the recovery pump 21 is connected to the water tank 11. When the water collected in the water collection tank 20 reaches a certain height, the recovery pump 21 can be turned on to pump the water from the water collection tank 20 into the water tank 11.

[0042] Furthermore, in order to improve the efficiency of instrument sealing testing by simultaneously testing the sealing performance of more instruments during actual testing, the device also includes a support 22 and two branch conversion discs 23. The support 22 is placed on the ground, and the two branch conversion discs 23 are placed on the support 22, with the two branch conversion discs 23 located on opposite sides of the support 22. The branch conversion discs 23 can rotate on the support 22 and are fixedly connected to the simulated pipeline 13. Specifically, support wheels 24 are rotatably connected to the support 22, and two support wheels 24 are distributed on the lower side of each branch conversion disc 23. The two support wheels 24 simultaneously support the branch conversion disc 23, allowing it to rotate.

[0043] The number of simulated pipes 13 can be set to multiple, and the multiple simulated pipes 13 are evenly distributed along the circumferential direction of the branch conversion disk 23. In this embodiment, the number of simulated pipes 13 is three, and the three simulated pipes 13 are evenly distributed along the circumferential direction of the branch conversion disk 23, and the mounting part 15 on each simulated pipe 13 is arranged facing outward.

[0044] To facilitate the rotation of the branch conversion disk 23 to adjust the orientation of instruments on different simulated pipelines 13, a drive gear 25 is rotatably connected to the bracket 22. A driven gear 26 is fixedly connected to the branch conversion disk 23. The driven gear 26 meshes with the drive gear 25, and a crank 27 is mounted and fixed on the drive gear 25. To improve the stability of the crank 27 when it is turned, the crank 27 is rotatably connected to the bracket 22. In use, the crank 27 is turned to drive the drive gear 25 to rotate, and the drive gear 25 drives the driven gear 26 to rotate. The branch conversion disk 23 rotates together with the driven gear 26.

[0045] To better simulate the instrument's condition under actual use, each simulated pipe 13 is equipped with a pressure gauge 29 and a temperature gauge 30, and each simulated pipe 13 is also equipped with an exhaust valve 31 to reduce the impact of air bubbles on the detection. Additionally, each simulated pipe 13 is also equipped with a pressure relief valve 28, which can be installed on the mounting part 15.

[0046] Reference Figure 1 and Figure 2 In use, water is added to the water tank 11, and the water in the water tank 11 is heated to the required temperature for testing or slightly higher than that temperature by 3 to 5 degrees using the heating wire 19. At the same time, the connecting pipe 16, the test ball valve 17, and the instrument to be tested are installed on the simulated pipe 13 to be tested. Then, the simulated ball valve 14 at the water inlet end of the simulated pipe 13 is opened, so that the simulated ball valve 14 at the water outlet end of the simulated pipe 13 and the pressure relief valve 28 are closed. At the same time, the air vent valve 31 is kept open. Then, the pressurization pump 12 is turned on to send the water in the water tank 11 into the simulated pipe 13 to be tested. After water comes out of the air vent valve 31, the air vent valve 31 is closed. Then, the temperature and pressure of the water in the simulated pipe 13 are observed. When the water pressure reaches the required test pressure, the simulated ball valve 14 at the water inlet end of the simulated pipe 13 is closed. Then, the water in the simulated pipe 13 is pressurized for 10 minutes, and the instrument on the simulated pipe 13 is observed for leakage.

[0047] Since the device includes three simulated pipes 13, while testing is being conducted on one simulated pipe 13, the testing personnel can disassemble the instruments on another simulated pipe 13. Simultaneously, instruments to be tested can be installed on another simulated pipe 13, thereby improving testing efficiency. During instrument disassembly, water discharged from the simulated pipe 13 falls into the collection tank 20. Once the water level in the collection tank 20 reaches a certain height, the recovery pump 21 can be activated to pump the water from the collection tank 20 into the water tank 11, thus forming a cycle for reuse.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting the sealing performance of instruments, characterized in that, include: Water tank; The booster pump has its inlet connected to the water tank. Simulated pipeline, with simulated ball valves at both ends; The mounting section is formed on the simulated pipeline and is located between two simulated ball valves; Multiple connecting pipes of different lengths are respectively installed on the mounting part; A test ball valve, located on the connecting pipe, is used to connect test instruments; as well as The circulation pipe is used to connect the booster pump to the simulated pipeline and the simulated pipeline to the water tank, and is rotatably connected to the simulated pipeline.

2. The device for detecting the sealing performance of an instrument according to claim 1, characterized in that, The water tank is equipped with heating wires for heating the water.

3. The device for detecting the sealing performance of an instrument according to claim 1, characterized in that, It also includes a water collection tank and a recovery pump. The water collection tank is located directly below the simulated pipeline. The inlet of the recovery pump is connected to the water collection tank, and the outlet of the recovery pump is connected to the water tank.

4. The device for detecting the sealing performance of an instrument according to claim 1, characterized in that, It also includes a support and a branch conversion plate. The branch conversion plate is mounted on the support and rotates on the support. Both ends of the branch conversion plate are connected to the simulated pipe and the circulation pipe, respectively. The branch conversion plate is rotatably connected to the circulation pipe. There are three simulated pipes, and all three simulated pipes are connected to the branch conversion plate.

5. The device for detecting the sealing performance of an instrument according to claim 4, characterized in that, The bracket is rotatably connected to two support wheels for supporting the branch conversion disc, and the two support wheels are located on the lower side of the branch conversion disc.

6. The device for detecting the sealing performance of an instrument according to claim 4, characterized in that, A drive gear is rotatably connected to the bracket, and a driven gear is fixed on the branch conversion disk. The driven gear meshes with the drive gear, and a crank is provided on the drive gear.

7. The device for detecting the sealing performance of an instrument according to claim 1, characterized in that, The simulated pipeline is equipped with a pressure relief valve, which is located on the mounting section.

8. The device for detecting the sealing performance of an instrument according to claim 1, characterized in that, The simulated pipeline is equipped with a pressure gauge, a temperature gauge, and an exhaust valve.

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