Ultrahigh vacuum flange sealing type assembly

Abstract

The utility model discloses an ultrahigh vacuum flange sealing type assembly which comprises a first flange plate and a second flange plate, a first pipeline is fixedly installed on one side of the first flange plate, a second pipeline is fixedly installed on one side of the second flange plate, and a rubber ring is arranged between the first flange plate and the second flange plate. First sealing rings are arranged on the outer sides between the rubber ring and the first flange plate and between the rubber ring and the second flange plate, the first sealing rings are fixedly connected with the rubber ring, a liquid cavity is formed in the rubber ring, rigid foam material liquid is arranged in the liquid cavity, and outer side baffle rings are fixedly installed on the two sides of the rubber ring along the outer side of the liquid cavity; and inner side baffle rings are fixedly mounted on the two sides of the rubber ring along the inner side of the liquid cavity. According to the flange sealing assembly, the stable sealing effect of the flange is achieved, the sealing stability is improved, and therefore the problem that in the long-time using process of a traditional flange sealing assembly, the sealing performance is reduced due to the aging phenomenon of a sealing material is solved.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically to an ultra-high vacuum flange sealing component. Background Technology

[0002] Flanges, also known as flange discs, are used for connections between pipe ends. In ultra-high vacuum systems, flange assemblies are key connecting components used to connect vacuum chambers, vacuum pumps, pipelines, and other components. Their main purpose is to ensure reliable sealing in ultra-high vacuum environments.

[0003] For example, the authorized patent with announcement number CN208331505U (a sealing flange assembly) includes a flange assembly body, a first fixed flange is fixedly disposed on the top of the flange assembly body, a plurality of fixed blocks are fixedly disposed on the bottom of the first fixed flange, a sealing block is fixedly disposed on one side of the fixed blocks, a rotating handle is fixedly disposed on the outer side of the first fixed flange, and a connecting support plate is fixedly disposed on the inner side of the rotating handle.

[0004] While the existing technologies mentioned above have achieved a stable connection between the sealing groove and the sealing rubber gasket, the sealing material of traditional flange sealing assemblies will age during long-term use, resulting in a decline in sealing performance and making stable sealing difficult. Therefore, there is an urgent need in the market to develop an ultra-high vacuum flange sealing assembly to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an ultra-high vacuum flange sealing component to solve the problem mentioned in the background art that the sealing material of traditional flange sealing components will age during long-term use, resulting in a decline in sealing performance and hindering stable sealing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultra-high vacuum flange sealing assembly, comprising a flange one and a flange two, wherein a pipe one is fixedly installed on one side of the flange one, and a pipe two is fixedly installed on one side of the flange two. A rubber ring is provided between the flange one and the flange two, and a sealing ring one is provided on the outer side of both the rubber ring and the flange one and the flange two. The sealing ring one is fixedly connected to the rubber ring. A liquid cavity is provided inside the rubber ring, and a rigid foam material liquid is provided inside the liquid cavity. Outer retaining rings are fixedly installed on both sides of the rubber ring along the outer side of the liquid cavity, and inner retaining rings are fixedly installed on both sides of the rubber ring along the inner side of the liquid cavity.

[0007] Preferably, a sealing ring 2 is provided on the inner side of both the rubber ring and flange 1 and flange 2, and an annular groove is provided on the inner end face of both flange 1 and flange 2, with the two sealing rings 2 extending into the annular grooves of flange 1 and flange 2 respectively.

[0008] Preferably, a protective ring is provided on the outer side of the rubber ring, and the protective ring is made of fluororubber material.

[0009] Preferably, the rubber ring has an injection hole above the liquid cavity inside, and the injection hole communicates with the liquid cavity; the protective ring has a sealing hole above the injection hole inside, and the sealing hole communicates with the injection hole; and a sealing plug is provided above the inside of the sealing hole.

[0010] Preferably, a first insert is fixedly installed inside the first flange, one end of the first insert extending into the interior of the first pipe, and a second insert is fixedly installed inside the second flange, one end of the second insert extending into the interior of the second pipe.

[0011] Preferably, a ring plate is fixedly installed on one side of the first insert, and an inner ring groove is provided on one side of the inner side of the ring plate. A ring plate is fixedly installed on one side of the second insert, and a protruding ring is fixedly installed on one side of the second ring, with the protruding ring inserted into the inner ring groove.

[0012] Preferably, a plurality of connecting bolts are provided between flange one and flange two, and flange one and flange two are fixedly connected by the connecting bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The present invention uses a sealing ring made of fluororubber material, which not only has excellent elastic deformation ability and can maintain effective sealing between flange components, but also has a liquid cavity design containing a special polyurethane foam liquid that can expand upon contact with air. This design further enhances the reliability and stability of the seal. Even after long-term use, if the seal is not tight and air seeps in, the rigid foam liquid will quickly react and expand, automatically making up for the sealing gap that may be caused by aging, thereby effectively extending the service life of the sealing components, ensuring a continuous and stable sealing effect, and contributing to the stability of the ultra-high vacuum system.

[0015] (2) By setting the sealing ring and the annular groove, this utility model not only further enhances the sealing effect between the flange components, but also effectively prevents the medium from penetrating from the inside. By setting the protective ring, it can prevent external factors from directly damaging the rubber ring, extend its service life, and at the same time help maintain the stability of the sealing components in the ultra-high vacuum environment, thus improving the overall reliability and durability of the seal.

[0016] (3) The utility model has a first insert installed inside the flange one and a second insert installed inside the flange two. The insert structure can increase the connection area between the flange and the pipe, improve the stability and sealing effect of the connection, ensure that the medium will not leak under high pressure or high temperature conditions, and increase its practicality. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an ultra-high vacuum flange sealing assembly according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the connection portion between flange one and flange two of this utility model.

[0019] Figure 3 This is an enlarged schematic diagram of part A of this utility model;

[0020] Figure 4 This is an enlarged schematic diagram of part B of this utility model.

[0021] In the diagram: 1. Pipe 1; 2. Pipe 2; 3. Flange 1; 4. Flange 2; 5. Connecting bolt; 6. Rubber ring; 601. Liquid chamber; 602. Injection hole; 7. Sealing ring 1; 8. Sealing ring 2; 9. Annular groove; 10. Outer retaining ring; 11. Inner retaining ring; 12. Protective ring; 1201. Sealing hole; 13. Sealing plug; 14. Insert 1; 15. Insert 2; 16. Ring plate 1; 1601. Inner annular groove; 17. Ring plate 2; 1701. Raised ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of an ultra-high vacuum flange sealing assembly, comprising a flange 3 and a flange 4. A pipe 1 is fixedly installed on one side of flange 3, and a pipe 2 is fixedly installed on one side of flange 4. A rubber ring 6 is provided between flange 3 and flange 4. A sealing ring 7 is provided on the outer side of both flange 3 and flange 4. The sealing ring 7 is made of fluororubber material and is fixedly connected to the rubber ring 6. A liquid cavity 601 is provided inside the rubber ring 6. The liquid cavity 601 contains a rigid foam material liquid, which is a special polyurethane foam material that can expand upon contact with air. Outer retaining rings 10 are fixedly installed on both sides of the rubber ring 6 along the outer side of the liquid cavity 601, and inner retaining rings 11 are fixedly installed on both sides of the rubber ring 6 along the inner side of the liquid cavity 601.

[0024] The sealing ring 7, made of fluororubber, not only possesses excellent elastic deformation capabilities, maintaining an effective seal between flange assemblies, but also features a liquid chamber 601 containing a special polyurethane foam material that expands upon contact with air. This design further enhances the reliability and stability of the seal. Even after prolonged use, if air seeps in due to a leak, the rigid foam material will quickly expand, automatically compensating for any gaps caused by aging. This effectively extends the service life of the sealing components, ensuring a continuous and stable sealing effect, which is beneficial to the stability of the ultra-high vacuum system.

[0025] Please see Figure 2 and Figure 3 A sealing ring 2 8 is provided on the inner side between the rubber ring 6 and flange 3 and flange 4. The sealing ring 2 8 is made of fluororubber. An annular groove 9 is provided on the inner end face between flange 3 and flange 4. The two sealing rings 2 8 extend into the annular groove 9 of flange 3 and flange 4 respectively.

[0026] The sealing ring 8 and the annular groove 9 not only further enhance the sealing effect between the flange components, but also effectively prevent the medium from seeping in from the inside, thus improving the overall reliability and durability of the seal.

[0027] Please see Figure 3 A protective ring 12 is provided on the outside of the rubber ring 6. The protective ring 12 is made of fluororubber material.

[0028] The protective ring 12 can prevent external factors from directly damaging the rubber ring 6, extend its service life, and also help maintain the stability of the sealing assembly in an ultra-high vacuum environment.

[0029] Please see Figure 4An injection hole 602 is provided inside the rubber ring 6 above the liquid cavity 601, and the injection hole 602 is connected to the liquid cavity 601. A sealing hole 1201 is provided inside the protective ring 12 above the injection hole 602, and the sealing hole 1201 is connected to the injection hole 602. A sealing plug 13 is provided inside the sealing hole 1201 above the liquid cavity 601.

[0030] The injection hole 602 and sealing hole 1201 allow for convenient injection or replacement of rigid foam material liquid into the liquid chamber 601 without disassembling the entire sealing assembly, greatly improving maintenance efficiency and reducing maintenance costs.

[0031] Please see Figure 2 Flange 3 has a fixedly installed insert 14, one end of which extends into the interior of pipe 1. Flange 4 has a fixedly installed insert 15, one end of which extends into the interior of pipe 2.

[0032] The plug-in structure increases the connection area between the flange and the pipe, improving the stability and sealing effect of the connection, and ensuring that the medium will not leak under high pressure or high temperature conditions.

[0033] Please see Figure 2 and Figure 3 A ring plate 16 is fixedly installed on one side of the insert 14. An inner ring groove 1601 is provided on one side inside the ring plate 16. A ring plate 17 is fixedly installed on one side of the insert 15. A protruding ring 1701 is fixedly installed on one side of the ring plate 17. The protruding ring 1701 is inserted into the inner ring groove 1601.

[0034] The protruding ring 1701 is inserted into the inner ring groove 1601, forming a stable connection structure that can effectively prevent the flange assembly from misaligning due to vibration or external force during long-term use, further improving the reliability and stability of the sealing assembly.

[0035] Please see Figure 1 Multiple connecting bolts 5 are provided between flange 1 3 and flange 2 4, and flange 1 3 and flange 2 4 are fixedly connected by connecting bolts 5.

[0036] The use of connecting bolt 5 makes the installation and disassembly of the flange assembly simple and quick, while ensuring the strength and sealing of the connection. It is a commonly used and reliable connection method in ultra-high vacuum systems.

[0037] Working principle: During use, efficient sealing is achieved through the double sealing ring design of rubber ring 6 and sealing rings 7 and 8 between flange 1 (3) and flange 2 (4). Sealing ring 7 is made of fluororubber, which has excellent elastic deformation capability, ensuring effective sealing between the flanges. At the same time, the liquid cavity 601 inside the rubber ring 6 contains a special polyurethane foam material. If air seeps in and causes a poor seal, the liquid will expand rapidly and automatically fill the sealing gap, enhancing the reliability and stability of the seal. In addition, the protective ring 12 on the outside of the rubber ring 6 further protects the rubber ring from external damage and extends its service life. The connection area between the flange and the pipeline is increased through the plug structure, which improves the connection stability. Thus, through the multiple sealing designs, the stable operation of the ultra-high vacuum system is ensured.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An ultra-high vacuum flange sealing assembly, comprising flange one (3) and flange two (4), characterized in that: Pipeline 1 (1) is fixedly installed on one side of flange 1 (3), and pipeline 2 (2) is fixedly installed on one side of flange 2 (4). A rubber ring (6) is provided between flange 1 (3) and flange 2 (4). A sealing ring 1 (7) is provided on the outer side of the rubber ring (6) and flange 1 (3) and flange 2 (4). The sealing ring 1 (7) is fixedly connected to the rubber ring (6). A liquid cavity (601) is provided inside the rubber ring (6). A rigid foam material liquid is provided inside the liquid cavity (601). Outer retaining rings (10) are fixedly installed on both sides of the rubber ring (6) along the outer side of the liquid cavity (601). Inner retaining rings (11) are fixedly installed on both sides of the rubber ring (6) along the inner side of the liquid cavity (601).

2. The ultra-high vacuum flange sealing assembly according to claim 1, characterized in that: A sealing ring 2 (8) is provided on the inner side of the rubber ring (6) and the flange 1 (3) and flange 2 (4). An annular groove (9) is provided on the inner end face of the flange 1 (3) and flange 2 (4). The two sealing rings 2 (8) extend into the annular groove (9) of the flange 1 (3) and flange 2 (4) respectively.

3. The ultra-high vacuum flange sealing assembly according to claim 1, characterized in that: A protective ring (12) is provided on the outside of the rubber ring (6), and the protective ring (12) is made of fluororubber material.

4. The ultra-high vacuum flange sealing assembly according to claim 3, characterized in that: An injection hole (602) is provided inside the rubber ring (6) above the liquid cavity (601), and the injection hole (602) is connected to the liquid cavity (601). A sealing hole (1201) is provided inside the protective ring (12) above the injection hole (602), and the sealing hole (1201) is connected to the injection hole (602). A sealing plug (13) is provided inside the sealing hole (1201).

5. The ultra-high vacuum flange sealing assembly according to claim 1, characterized in that: A first insert (14) is fixedly installed inside the first flange (3), one end of which extends into the interior of the first pipe (1). A second insert (15) is fixedly installed inside the second flange (4), one end of which extends into the interior of the second pipe (2).

6. The ultra-high vacuum flange sealing assembly according to claim 5, characterized in that: A ring plate (16) is fixedly installed on one side of the first insert (14), and an inner ring groove (1601) is provided on one side inside the first ring plate (16). A ring plate (17) is fixedly installed on one side of the second insert (15), and a protruding ring (1701) is fixedly installed on one side of the second ring plate (17). The protruding ring (1701) is inserted into the inner ring groove (1601).

7. The ultra-high vacuum flange sealing assembly according to claim 1, characterized in that: Multiple connecting bolts (5) are provided between flange one (3) and flange two (4), and flange one (3) and flange two (4) are fixedly connected by connecting bolts (5).

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