Device for detecting sealing performance of sealing ring
By introducing an electric heating element and dual pressure sensors into the detection device, the problems of existing devices being unable to simulate high-temperature environments and data errors are solved, enabling accurate detection of sealing rings under high-temperature conditions and improving the reliability of detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-14
AI Technical Summary
Existing testing devices cannot simulate the high-temperature environment of sealing rings during actual use, and data errors are prone to occur during the testing process.
A detection device including an electric heating element and dual pressure sensors was designed. The electric heating element simulates a high-temperature environment, and the first and second pressure sensors simultaneously detect the pressure on both sides of the sealing ring, thereby reducing data errors.
It enables accurate detection of sealing rings under high-temperature conditions, reduces data errors, and improves the accuracy of test results.
Smart Images
Figure CN224122117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a testing device for the sealing performance of a sealing ring. Background Technology
[0002] Carbide sealing rings are high-performance sealing components, primarily made of carbide, a material known for its high hardness, wear resistance, and corrosion resistance. Sealing performance testing after manufacturing is crucial for carbide sealing rings. This is because carbide sealing rings must maintain excellent sealing performance under harsh environments such as high temperature and high pressure to prevent media leakage and ensure the safe and normal operation of equipment. Sealing performance testing can promptly detect minor defects or flaws that may occur during the manufacturing process, such as porosity and cracks. These defects can affect the sealing effect and service life of the sealing ring.
[0003] Existing testing devices cannot simulate the high-temperature environment that the sealing ring experiences during actual use, and are prone to data errors during testing. Therefore, this invention proposes a new solution. Utility Model Content
[0004] The purpose of this invention is to solve the problem that existing testing devices cannot simulate the high-temperature environment of the sealing ring during actual use and are prone to data errors during testing. Therefore, this invention proposes a testing device for the sealing performance of sealing rings.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A testing device for the sealing performance of sealing rings, in order to improve the above-mentioned problems.
[0007] The present invention is as follows:
[0008] The device includes a housing, a mounting bracket fixedly mounted on the top of the housing, a cylinder mounted on the mounting bracket, a first detection cylinder connected to the moving end of the cylinder, a second detection cylinder connected to the bottom of the first detection cylinder, a support base located on one side of the mounting bracket mounted on the top of the housing, a mounting rod mounted on the top of the support base, an annular support ring fixedly mounted on the outer wall of the mounting rod, an electric heating element installed inside the first detection cylinder, a gas supply mechanism installed inside the housing, a first connecting pipe connected to the interior of the first detection cylinder, a first valve located outside the first detection cylinder mounted on the first connecting pipe, a first pressure sensor penetrating the first detection cylinder, and a second pressure sensor penetrating the second detection cylinder.
[0009] As a preferred technical solution of this utility model, the gas supply mechanism includes a high-pressure gas cylinder installed inside the box body. One end of the high-pressure gas cylinder is connected to a second connecting pipe that communicates with its interior. A second valve is installed in the middle of the second connecting pipe. A flexible hose for connecting to the first connecting pipe is installed at the end of the second connecting pipe away from the high-pressure gas cylinder.
[0010] As a preferred technical solution of this utility model, a connecting sleeve for connecting the moving end of the cylinder is fixedly installed on the top of the first detection cylinder, and the inner wall of the connecting sleeve is threaded.
[0011] As a preferred technical solution of this utility model, the inner wall of the second detection cylinder is provided with a groove for accommodating the detection end of the second pressure sensor, and the bottom of the second detection cylinder is fixedly connected with a first sealing gasket.
[0012] As a preferred technical solution of this utility model, the support base includes a base plate, a screw hole that cooperates with the mounting rod is provided at the top center of the base plate, a sealing groove that cooperates with the second detection cylinder is provided at the top of the base plate, the sealing groove is annular and located outside the screw hole, and a second sealing gasket is installed inside the sealing groove.
[0013] As a preferred technical solution of this utility model, the first detection cylinder includes an outer shell and an inner shell, and a heat-insulating filler is provided between the outer shell and the inner shell.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] In the solution of this utility model:
[0016] 1. By setting up the first detection cylinder and the electric heating element, the inside of the first detection cylinder can be heated by the electric heating element when testing the air tightness of the sealing ring, thereby simulating the high temperature environment that the sealing ring is in actual use, making the test data more accurate and realistic, and thus better evaluating the overall sealing performance of the sealing ring;
[0017] 2. By setting up a first detection cylinder, a second detection cylinder, a first pressure sensor, and a second pressure sensor, the pressure on both sides of the sealing ring can be detected simultaneously during use. This allows for comparison of the two sets of data obtained from the first and second pressure sensors, minimizing data errors during detection and ensuring the accuracy of the detection results. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of the device for testing the sealing performance of a sealing ring provided by this utility model;
[0019] Figure 2 A schematic diagram of the internal structure of the housing of the device for testing the sealing performance of a sealing ring provided by this utility model;
[0020] Figure 3 A schematic diagram of the first detection cylinder structure of the device for detecting the sealing performance of a sealing ring provided by this utility model;
[0021] Figure 4 A schematic diagram of the base plate structure of the device for testing the sealing performance of a sealing ring provided by this utility model;
[0022] Figure 5 The present invention provides a testing device for the sealing performance of a sealing ring. Figure 3 Enlarged view of the structure at point A.
[0023] The image shows:
[0024] 1. Housing; 2. Mounting bracket; 3. Cylinder; 4. Air supply mechanism; 5. Support base; 6. First detection cylinder; 7. Second detection cylinder; 8. First pressure sensor; 9. Second pressure sensor; 10. Mounting rod; 11. Support ring; 12. Groove; 13. First sealing gasket; 14. Electric heating element; 15. First connecting pipe; 16. First valve; 17. Connecting sleeve; 401. High-pressure gas cylinder; 402. Second connecting pipe; 403. Second valve; 404. Hoose; 501. Base plate; 502. Sealing groove; 503. Second sealing gasket; 601. Outer shell; 602. Inner shell; 603. Thermal insulation filler. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0026] like Figures 1-5As shown, this embodiment proposes a testing device for the sealing performance of a sealing ring, including a housing 1. A mounting frame 2 is fixedly installed on the top of the housing 1. A cylinder 3 is mounted on the mounting frame 2. A first testing cylinder 6 is connected to the moving end of the cylinder 3. A second testing cylinder 7, which communicates with the bottom of the first testing cylinder 6, is installed on the bottom of the first testing cylinder 6. A support base 5 located on one side of the mounting frame 2 is installed on the top of the housing 1. A mounting rod 10 is installed on the top of the support base 5. An annular support ring 11 is fixedly installed on the outer wall of the mounting rod 10. The diameter of the support ring 11 is smaller than that of the sealing ring. An electric heating element 14 is installed inside the first testing cylinder 6. Through the arrangement of the first testing cylinder 6 and the electric heating element 14, the inside of the first testing cylinder 6 can be heated by the electric heating element 14 when testing the airtightness of the sealing ring, thereby simulating the high-temperature environment in which the sealing ring is actually used, and enabling the sealing ring to... The data obtained from the test is more accurate and reliable, thus better evaluating the overall sealing performance of the sealing ring. An air supply mechanism 4 is installed inside the housing 1. A first connecting pipe 15, which communicates with the inside of the first detection cylinder 6, is installed on the first connecting pipe 15. A first valve 16, located outside the first detection cylinder 6, is installed on the first connecting pipe 15. A first pressure sensor 8 is installed through the first detection cylinder 6, and a second pressure sensor 9 is installed through the second detection cylinder 7. By setting up the first detection cylinder 6, the second detection cylinder 7, the first pressure sensor 8, and the second pressure sensor 9, the pressure on both sides of the sealing ring can be simultaneously detected during use. This allows for comparison of the two sets of data obtained from the first pressure sensor 8 and the second pressure sensor 9, minimizing data errors during testing and ensuring the accuracy of the test results.
[0027] like Figure 2 As shown, in a preferred embodiment, based on the above method, the gas supply mechanism 4 further includes a high-pressure gas cylinder 401 installed inside the housing 1. One end of the high-pressure gas cylinder 401 is connected to a second connecting pipe 402 that communicates with its interior. A second valve 403 is installed in the middle of the second connecting pipe 402. A flexible hose 404 for connecting to a first connecting pipe 15 is installed at the end of the second connecting pipe 402 away from the high-pressure gas cylinder 401. It should be noted that during testing, opening the first valve 16 and the second valve 403 allows the gas inside the high-pressure gas cylinder 401 to be transported through the second connecting pipe 402, the flexible hose 404, and the first connecting pipe 15 to the interior of the first testing cylinder 6, pressurizing its interior.
[0028] like Figure 3As shown, in a preferred embodiment, based on the above method, a connecting sleeve 17 for connecting the moving end of the cylinder 3 is further fixedly installed on the top of the first detection cylinder 6, and the inner wall of the connecting sleeve 17 is threaded. It should be noted that, in use, the connecting sleeve 17 facilitates the connection between the first detection cylinder 6 and the moving end of the cylinder 3, and also facilitates the disassembly and replacement of the first detection cylinder 6 when detecting sealing rings of different diameters.
[0029] like Figure 3 As shown, in a preferred embodiment, based on the above method, the inner wall of the second detection cylinder 7 is further provided with a groove 12 for accommodating the detection end of the second pressure sensor 9. It should be noted that the groove 12 prevents the detection end of the second pressure sensor 9 from contacting the sealing ring mounted on the support ring 11 when the cylinder 3 drives the first detection cylinder 6 and the second detection cylinder 7 to rise or fall.
[0030] like Figures 1-4 As shown, in a preferred embodiment, based on the above method, the bottom of the second detection cylinder 7 is further fixedly connected with a first sealing washer 13. The support base 5 includes a base plate 501. A screw hole that mates with the mounting rod 10 is opened at the top center of the base plate 501. A sealing groove 502 that mates with the second detection cylinder 7 is opened at the top of the base plate 501. The sealing groove 502 is annular and located outside the screw hole. A second sealing washer 503 is installed inside the sealing groove 502. It should be noted that by setting the first sealing washer 13 and the second sealing washer 503, the airtightness between the bottom end of the second detection cylinder 7 and the base plate 501 can be improved, avoiding gas leakage in the second detection cylinder 7 and causing errors in the detection data. The screw hole facilitates the installation and removal of the mounting rod 10, thereby facilitating the replacement of the mounting rod 10 when detecting sealing rings with different inner diameters.
[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, the first detection cylinder 6 further includes an outer shell 601 and an inner shell 602, with a heat-insulating filler 603 disposed between the outer shell 601 and the inner shell 602. It should be noted that the heat-insulating filler 603 reduces the rate of heat loss from the first detection cylinder 6 and also prevents the outer shell 601 from overheating and causing burns to the operator.
[0032] Specifically, the working principle of this device for testing the sealing performance of sealing rings is as follows: Before use, select an installation rod 10 and a first testing cylinder 6 that match the inner and outer diameters of the sealing ring. Then, install both on the support base 5 and the cylinder 3 respectively. During testing, the sealing ring is placed on the installation rod 10 and supported at the bottom by the support ring 11. Then, the cylinder 3 is activated to lower the first testing cylinder 6 and the second testing cylinder 7, allowing the sealing ring to enter the inner side of the first testing cylinder 6. The sealing ring seals the gap between the first testing cylinder 6 and the installation rod 10, while simultaneously causing the bottom of the second testing cylinder 7 to press against the top of the support base 5, thus sealing the interiors of the first testing cylinder 6 and the second testing cylinder 7. During testing, the first valve 16 on the first connecting pipe 15 is opened, and air is supplied to the first testing cylinder 6 through the air supply mechanism 4, allowing the first testing cylinder to... The air pressure inside cylinder 6 increases. When the required air pressure is reached, the first valve 16 is closed to maintain the pressure inside the first detection cylinder 6. At the same time, during the detection process, the first detection cylinder 6 can be heated by the electric heating element 14 to simulate the high-temperature environment of the sealing ring. During the pressure maintenance process, the data inside the first detection cylinder 6 and the second detection cylinder 7 are detected separately by the first pressure sensor 8 and the second pressure sensor 9. If the sealing ring is not sealed well, air leakage will occur, causing the gas in the first detection cylinder 6 to leak into the second detection cylinder 7. At this time, the pressure data detected by the first pressure sensor 8 and the second pressure sensor 9 will change. After the detection is completed, the two sets of data obtained by the first pressure sensor 8 and the second pressure sensor 9 on both sides of the sealing ring can be compared to determine whether the sealing performance of the sealing ring is qualified.
[0033] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.
Claims
1. A testing device for the sealing performance of a sealing ring, comprising a housing (1), wherein a mounting bracket (2) is fixedly mounted on the top of the housing (1), characterized in that, The mounting bracket (2) is equipped with a cylinder (3), the moving end of the cylinder (3) is connected to a first detection cylinder (6), the bottom end of the first detection cylinder (6) is equipped with a second detection cylinder (7) that communicates with its interior, the top of the housing (1) is equipped with a support seat (5) located on one side of the mounting bracket (2), the top of the support seat (5) is equipped with a mounting rod (10), the outer wall of the mounting rod (10) is fixedly equipped with an annular support ring (11), the interior of the first detection cylinder (6) is equipped with an electric heating element (14), the interior of the housing (1) is equipped with a gas supply mechanism (4), the first detection cylinder (6) is equipped with a first connecting pipe (15) that communicates with its interior, the first connecting pipe (15) is equipped with a first valve (16) located on the outside of the first detection cylinder (6), the first detection cylinder (6) is equipped with a first pressure sensor (8), and the second detection cylinder (7) is equipped with a second pressure sensor (9).
2. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The gas supply mechanism (4) includes a high-pressure gas cylinder (401) installed inside the housing (1). One end of the high-pressure gas cylinder (401) is connected to a second connecting pipe (402) that communicates with its interior. A second valve (403) is installed in the middle of the second connecting pipe (402). A hose (404) for connecting to the first connecting pipe (15) is installed at the end of the second connecting pipe (402) away from the high-pressure gas cylinder (401).
3. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The top of the first detection cylinder (6) is fixedly equipped with a connecting sleeve (17) for connecting the moving end of the cylinder (3), and the inner wall of the connecting sleeve (17) is threaded.
4. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The inner wall of the second detection cylinder (7) is provided with a groove (12) for accommodating the detection end of the second pressure sensor (9), and the bottom of the second detection cylinder (7) is fixedly connected with a first sealing gasket (13).
5. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The support base (5) includes a base plate (501). A screw hole that cooperates with the mounting rod (10) is provided at the top center of the base plate (501). A sealing groove (502) that cooperates with the second detection cylinder (7) is provided at the top of the base plate (501). The sealing groove (502) is annular and located outside the screw hole. A second sealing gasket (503) is installed inside the sealing groove (502).
6. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The first detection cylinder (6) includes an outer shell (601) and an inner shell (602), and a heat insulation filler (603) is provided between the outer shell (601) and the inner shell (602).