High-pressure testing device for sealing ring

Abstract

The utility model discloses a sealing ring high pressure testing device which comprises a pressure cylinder, the inner wall of the pressure cylinder is provided with a through hole, the right side of the pressure cylinder is provided with an air pump, an output pipe of the air pump is communicated with the pressure cylinder, the output pipe of the air pump is provided with a one-way valve, the left side of the pressure cylinder is communicated with an exhaust pipe, and the exhaust pipe is provided with an air outlet. An electromagnetic valve is installed on the exhaust pipe, the pressure cylinder is sleeved with an installation cylinder in threaded connection with the pressure cylinder, an installation rod is rotationally connected to the inner top wall of the installation cylinder, a rubber ring installation groove is formed in the installation rod, and a detection cylinder fixedly connected with the installation cylinder is inserted into the installation cylinder in a penetrating mode. According to the rubber ring pressure testing device, the work of testing the pressure of the rubber ring can be completed without using various sensors, the cost of the testing device is reduced, the performance of the rubber ring can be visually observed, the operation of detection personnel is facilitated, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring testing technology, and more specifically, to a high-pressure testing device for sealing rings. Background Technology

[0002] The high-pressure testing device for tunnel boring machine (TBM) sealing rings is a specialized instrument used to test the performance of TBM sealing rings under high-pressure environments. It simulates the high-pressure conditions faced by TBMs during underground construction, such as high water pressure, to ensure the sealing rings effectively seal and prevent leakage of groundwater, mud, and other substances during actual use. Common pressure testing devices use pressure sensors on both sides of the sealing ring. After applying high pressure, if the sealing ring is in good condition, the pressure difference between the two sides should remain within a set range. For example, one side could be a high-pressure chamber, and the other a normal or low-pressure chamber. If there is no leakage, the pressure on the high-pressure side should not decrease significantly, and the pressure on the low-pressure side should not increase significantly.

[0003] When testing the sealing rings of tunnel boring machines, the high-pressure testing device for sealing rings usually needs to be used in conjunction with multiple sensors, which results in a high cost of the testing device. Furthermore, the testing process requires observing a variety of data to determine the performance of the sealing rings, making the testing very cumbersome. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a high-pressure testing device for sealing rings to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] A high-pressure testing device for sealing rings includes a pressure cylinder with a through hole in its inner wall. An air pump is installed on the right side of the pressure cylinder, and the output pipe of the air pump is connected to the pressure cylinder. A one-way valve is installed on the output pipe of the air pump. An exhaust pipe is connected to the left side of the pressure cylinder, and a solenoid valve is installed on the exhaust pipe. An installation cylinder is threadedly fitted onto the pressure cylinder. An installation rod is rotatably connected to the inner top wall of the installation cylinder. A rubber ring installation groove is provided on the installation rod. A test cylinder is inserted into and fixedly connected to the installation cylinder. The top and bottom of the test cylinder are connected to conduits. Feathers are provided inside the test cylinder. A transparent plate is embedded on the front of the test cylinder.

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

[0008] The bottom of the mounting rod is threaded with a connecting rod, and the bottom end of the connecting rod is fixedly connected to a filter cylinder. The outer side of the filter cylinder is in contact with the inner wall of the through hole.

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

[0010] A cleaning ring is fixedly connected to the bottom of the filter cartridge, and the outer side of the cleaning ring is in contact with the inner wall of the through hole.

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

[0012] The inner wall of the through hole is provided with a guide groove, and the guide groove is flared in shape.

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

[0014] A pressure plate is fixedly connected to the inner wall of the mounting cylinder, and a rubber ring is fixedly connected to the top of the pressure cylinder.

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

[0016] A limiting block is fixedly connected to the outside of the pressure cylinder, and the limiting block is located below the mounting cylinder.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This testing device can complete the pressure test of rubber rings without the need for multiple sensors, reducing the cost of the testing equipment. It also allows for direct observation of the rubber ring's performance, which is beneficial for testing personnel and improves the device's practicality. Attached Figure Description

[0019] Figure 1 One of the perspective views of this utility model;

[0020] Figure 2 This is a second perspective view of the present utility model;

[0021] Figure 3 This is a third perspective view of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Pressure cylinder; 2. Through hole; 3. Air pump; 4. Check valve; 5. Exhaust pipe; 6. Solenoid valve; 7. Mounting cylinder; 8. Mounting rod; 9. Mounting groove; 10. Detection cylinder; 11. Guide tube; 12. Feather; 13. Transparent plate; 14. Connecting rod; 15. Filter cylinder; 16. Cleaning ring; 17. Guide groove; 18. Pressure plate; 19. Rubber ring; 20. Limiting block. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Please see Figures 1-4 In this utility model: a high-pressure testing device for a sealing ring includes a pressure cylinder 1, with a through hole 2 on the inner wall of the pressure cylinder 1, an air pump 3 installed on the right side of the pressure cylinder 1, the output pipe of the air pump 3 connected to the pressure cylinder 1, a one-way valve 4 installed on the output pipe of the air pump 3, an exhaust pipe 5 connected to the left side of the pressure cylinder 1, a solenoid valve 6 installed on the exhaust pipe 5, an installation cylinder 7 threadedly connected to the pressure cylinder 1, an installation rod 8 rotatably connected to the inner top wall of the installation cylinder 7, a rubber ring installation groove 9 on the installation rod 8, a detection cylinder 10 fixedly connected to the installation cylinder 7, a conduit 11 connected to the top and bottom of the detection cylinder 10, feathers 12 inside the detection cylinder 10, and a transparent plate 13 embedded on the front of the detection cylinder 10.

[0027] In this invention, the rubber ring mounting groove 9 is used to install the rubber ring to be tested. When testing the rubber ring, firstly, the mounting cylinder 7 is rotated, and the mounting cylinder 7 moves downward along the pressure cylinder 1. During this process, the mounting rod 8 is inserted into the through hole 2. At this time, the rubber ring in the rubber ring mounting groove 9 will be tightly attached to the inner wall of the through hole 2, thereby achieving a seal between the mounting rod 8 and the through hole 2. Then, the user turns on the air pump 3 to input air into the pressure cylinder 1. The air gradually accumulates inside the pressure cylinder 1, thereby generating high pressure in the pressure cylinder 1. During the sealing process of the through hole 2, the rubber ring in the rubber ring mounting groove 9 will bear the pressure from the air in the pressure cylinder 1. When the air pump 3 has worked for a suitable time, the pressure in the pressure cylinder 1 reaches... When the test pressure value is reached, the user only needs to turn off the air pump 3 and observe the condition of the feathers 12 in the test cylinder 10 through the transparent plate 13 to determine the condition of the sealing ring. If the sealing ring is damaged by pressure, air will flow into the mounting cylinder 7 through the through hole 2, and then the air will enter the test cylinder 10 through the conduit 11. The air will then be discharged from the top conduit 11. During the air discharge process, the feathers 12 will be tumbling. If the sealing ring is intact, no air will flow out from the conduit 11, and the feathers 12 will be in a stationary state. The user can determine the working condition of the rubber ring by judging the condition of the feathers 12, intuitively know the performance of the tested rubber ring, and thus achieve the effect of pressure testing of the rubber ring.

[0028] When inserting the sealing ring into the through hole 2, the user can first turn on the air pump 3 for a few seconds to allow air to pass through the through hole 2. The air can clean the inner wall of the through hole 2, effectively preventing dust from adhering to the inner wall of the through hole 2 and affecting the rubber ring test, thereby improving the test effect of the test device.

[0029] Please see Figure 4The bottom of the mounting rod 8 is threaded with a connecting rod 14, and the bottom end of the connecting rod 14 is fixedly connected with a filter cylinder 15. The outer side of the filter cylinder 15 is in contact with the inner wall of the through hole 2.

[0030] In this invention, the connecting rod 14 is used to connect the filter cylinder 15, which can be used to collect the rubber ring residue after it is broken, thus preventing the rubber ring residue from falling into the pressure cylinder 1.

[0031] Please see Figure 4 The bottom of the filter cartridge 15 is fixedly connected to a cleaning ring 16, and the outer side of the cleaning ring 16 is in contact with the inner wall of the through hole 2.

[0032] In this invention, the cleaning ring 16 can slide along the inner wall of the through hole 2 when the mounting rod 8 enters and exits the through hole 2, thereby cleaning the inner wall of the through hole 2, further reducing the impact of dust on the test, and thus improving the practicality of the device.

[0033] Please see Figure 4 The inner wall of the through hole 2 is provided with a guide groove 17, which is flared in shape. In this utility model, the guide groove 17 can facilitate the smooth sliding of the rubber ring into the through hole 2, reducing the possibility of damage to the rubber ring.

[0034] Please see Figure 4 The inner wall of the mounting cylinder 7 is fixedly connected to a pressure plate 18, and the top of the pressure cylinder 1 is fixedly connected to a rubber ring 19.

[0035] In this invention, after the rubber ring is installed, the pressure plate 18 will be tightly attached to the rubber ring 19, thereby achieving a sealing treatment between the mounting cylinder 7 and the pressure cylinder 1, and improving the sensitivity of the device in detecting air leakage.

[0036] Please see Figure 1 and 2 Among them, a limiting block 20 is fixedly connected to the outside of the pressure cylinder 1, and the limiting block 20 is located below the mounting cylinder 7.

[0037] In this invention, the limiting block 20 can position the mounting cylinder 7, which helps the user control the rubber ring to move to the appropriate position and improves the practicality of the device.

[0038] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A high-pressure testing device for a sealing ring, comprising a pressure cylinder (1), characterized in that: The pressure cylinder (1) has a through hole (2) on its inner wall. An air pump (3) is installed on the right side of the pressure cylinder (1). The output pipe of the air pump (3) is connected to the pressure cylinder (1). A one-way valve (4) is installed on the output pipe of the air pump (3). An exhaust pipe (5) is connected to the left side of the pressure cylinder (1). A solenoid valve (6) is installed on the exhaust pipe (5). An installation cylinder (7) is threaded onto the pressure cylinder (1). An installation rod (8) is rotatably connected to the inner top wall of the installation cylinder (7). A rubber ring installation groove (9) is opened on the installation rod (8). A detection cylinder (10) is inserted into the installation cylinder (7) and fixedly connected to it. A conduit (11) is connected to the top and bottom of the detection cylinder (10). Feathers (12) are provided inside the detection cylinder (10). A transparent plate (13) is embedded on the front of the detection cylinder (10).

2. The high-pressure testing device for a sealing ring according to claim 1, characterized in that: The bottom of the mounting rod (8) is threaded with a connecting rod (14), and the bottom end of the connecting rod (14) is fixedly connected with a filter cylinder (15). The outer side of the filter cylinder (15) is in contact with the inner wall of the through hole (2).

3. The high-pressure testing device for a sealing ring according to claim 2, characterized in that: A cleaning ring (16) is fixedly connected to the bottom of the filter cylinder (15), and the outer side of the cleaning ring (16) is in contact with the inner wall of the through hole (2).

4. The high-pressure testing device for a sealing ring according to claim 1, characterized in that: The inner wall of the through hole (2) is provided with a guide groove (17), and the guide groove (17) is horn-shaped.

5. The high-pressure testing device for a sealing ring according to claim 1, characterized in that: A pressure plate (18) is fixedly connected to the inner wall of the mounting cylinder (7), and a rubber ring (19) is fixedly connected to the top of the pressure cylinder (1).

6. The high-pressure testing device for a sealing ring according to claim 1, characterized in that: A limiting block (20) is fixedly connected to the outside of the pressure cylinder (1), and the limiting block (20) is located below the mounting cylinder (7).

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