Sealing element capable of preventing thermal expansion and cold contraction

Abstract

The utility model relates to the technical field of sealing elements, and discloses a sealing element capable of preventing thermal expansion and cold contraction, which comprises a flange, a pipe body is fixedly connected to the outer surface of the flange, a bolt is arranged on the outer surface of the flange, a sealing assembly is arranged on the outer surface of the flange, and the sealing assembly comprises a connecting plate. A connecting plate is fixedly connected to the outer surface of the pipe body, a metal circular plate is fixedly connected to one end of the connecting plate, and in daily equipment operation, when the sealing effect is poor through thermal expansion and cold contraction, a conical rubber barrel on the metal circular plate can be heated to expand, so that the bottom end moves forwards; contact sealing of the upper rubber ring between the rubber plate ring and the flange is firmer through expansion of the conical rubber barrel, meanwhile, the conical rubber barrel applies pressure to the pressure applying metal plate, the prizing plate extrudes the pressure applying metal plate through transmission, the lower rubber ring is closer to the flange and the rubber plate ring, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing components, in particular to a sealing component capable of preventing thermal expansion and contraction. Background Art

[0002] The high temperature resistant seals of the internal parts of the ammonia synthesis tower are made of high-performance polymer materials, which have the advantages of both fluororubber and silicone rubber. High-quality high temperature resistant seals have stable chemical structure and are characterized by high temperature resistance, wear resistance, oil resistance, corrosion resistance, and self-lubrication.

[0003] In existing applications, it can be used for a long time and is suitable for various corrosive chemical liquids, organic solvents, liquid oxygen, etc. It is widely used in industrial fields such as petroleum, chemical industry, chemical fiber, coal mining, power generation, and metallurgy.

[0004] However, during use, high-quality high-temperature resistant sealing rings have stable chemical structure performance, but lack physical properties. Thermal expansion and contraction will affect the change of their volume, making the sealing effect imperfect. In view of this, we have proposed a seal that can prevent thermal expansion and contraction. Utility Model Content

[0005] The utility model aims to provide a sealing element capable of preventing thermal expansion and contraction, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing member capable of preventing thermal expansion and contraction, comprising a flange, the outer surface of the flange is fixedly connected to a tube body, the outer surface of the flange is provided with bolts, the outer surface of the flange is provided with a sealing assembly, the sealing assembly comprises a connecting plate, the outer surface of the tube body is fixedly connected to the connecting plate, one end of the connecting plate is fixedly connected to a metal circular plate, the outer surface of the metal circular plate is fixedly connected to a conical rubber cylinder, one end of the conical rubber cylinder is fixedly connected to a pressure metal plate, the outer surface of the flange is movably connected to a rubber plate ring, the rubber plate ring is movably connected to an upper rubber ring, the outer surface of the flange is fixedly connected to a high temperature resistant spring, one end of the high temperature resistant spring is fixedly connected to a pressure metal plate, the outer surface of the pressure metal plate is fixedly connected to a lower rubber ring, the outer surface of the tube body is rotatably mounted with a rotating rod, one end of the rotating rod is fixedly connected to a telescopic plate, one end of the telescopic plate is fixedly connected to a prying plate, one end of the telescopic plate is provided with a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to the pressure metal plate.

[0007] Preferably, the center line of the metal circular plate and the center line of the pressure metal plate are both on the same center line, so that the pressure metal plate can stably run on the path when moving forward or backward due to thermal expansion and contraction.

[0008] Preferably, the prying plates, telescopic plates, rotating rods and rotating shafts are all provided in two groups, and the two groups of prying plates, two groups of telescopic plates, two groups of rotating rods and two groups of rotating shafts are mirrored on both sides of the center plane of the pressure metal plate, so that the pressure metal plate can stably pry the pressed metal plate during the pressing process.

[0009] Preferably, the number of the high temperature resistant springs is several, and the high temperature resistant springs are arranged in a circular array on the outer surface of the pressure-bearing metal plate, so that the pressure-bearing metal plate can stably transmit pressure.

[0010] Preferably, a pressurizing component is provided on the outer surface of the pressurizing metal plate, and the pressurizing component includes an extension plate, and the outer surface of the pressurizing metal plate is fixedly connected to the extension plate, and the outer surface of the extension plate is fixedly connected to a metal semi-arc plate.

[0011] Preferably, the metal semi-arc plate is adapted to the conical rubber cylinder, so that the metal semi-arc plate can pressurize the outer surface of the conical rubber cylinder when it descends synchronously with the pressure metal plate, so that the sealing effect of the rubber plate ring is better.

[0012] Compared with the prior art, the utility model provides a sealing member capable of preventing thermal expansion and contraction, which has the following beneficial effects:

[0013] 1. The seal that can prevent thermal expansion and contraction, in daily equipment operation, when the sealing effect is poor due to thermal expansion and contraction, the conical rubber cylinder on the metal circular plate will expand due to heat, so that the bottom end moves forward. The expansion of the conical rubber cylinder makes the upper rubber ring between the rubber plate ring and the flange more firmly in contact and seal. At the same time, the conical rubber cylinder applies pressure to the pressure metal plate, and the prying plate squeezes the pressure metal plate through transmission, so that the lower rubber ring is closer to the flange and the rubber plate ring, thereby increasing its sealing effect.

[0014] 2. The sealing member capable of preventing thermal expansion and contraction, when the conical rubber cylinder applies pressure to the pressure metal plate and the prying plate squeezes the pressured metal plate through transmission, the pressure metal plate descends, so that the metal semi-arc plate connected to the extension plate can exert a downward squeezing force on the conical rubber cylinder, so that the conical rubber cylinder can better pressurize the upper rubber ring, the lower rubber ring and the rubber plate ring, so that the flange is more closely fitted and the sealing is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the compensation component of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the compensation component of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the pressurizing component of the utility model.

[0019] In the figure: 1. flange; 2. bolt; 3. pipe body; 4. sealing assembly; 401. connecting plate; 402. metal circular plate; 403. conical rubber cylinder; 404. upper rubber ring; 405. rubber plate ring; 406. lower rubber ring; 407. pressure metal plate; 408. high temperature resistant spring; 409. pressure metal plate; 410. rotating rod; 411. telescopic plate; 412. prying plate; 413. rotating shaft; 5. pressurizing assembly; 501. extension plate; 502. metal semi-arc plate. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a sealing member capable of preventing thermal expansion and contraction, comprising a flange 1, a pipe body 3 is fixedly connected to the outer surface of the flange 1, a bolt 2 is arranged on the outer surface of the flange 1, a sealing assembly 4 is arranged on the outer surface of the flange 1, the sealing assembly 4 comprises a connecting plate 401, the outer surface of the pipe body 3 is fixedly connected to the connecting plate 401, one end of the connecting plate 401 is fixedly connected to a metal circular plate 402, the outer surface of the metal circular plate 402 is fixedly connected to a conical rubber cylinder 403, the conical rubber cylinder 403 can stretch when heated, one end of the conical rubber cylinder 403 is fixedly connected to a pressure metal plate 409, the conical rubber cylinder 403 can drive the pressure metal plate 409 to press downward when stretching, a rubber plate ring 405 is movably connected to the outer surface of the flange 1, the rubber plate ring 405 plays a primary sealing role for the inside of the pipe body 3, and the rubber plate ring 405 is movably connected to an upper rubber ring 404.

[0021] Furthermore, a high temperature resistant spring 408 is fixedly connected to the outer surface of the flange 1, and one end of the high temperature resistant spring 408 is fixedly connected to a pressure metal plate 407. The pressure metal plate 407 will move upward when under pressure, and a lower rubber ring 406 is fixedly connected to the outer surface of the pressure metal plate 407. The upper rubber ring 404 and the lower rubber ring 406 play a secondary sealing role. A rotating rod 410 is rotatably installed on the outer surface of the tube body 3, and one end of the rotating rod 410 is fixedly connected to a telescopic plate 411. The pressure metal plate 409 can stretch the telescopic plate 411 when moving downward, and one end of the telescopic plate 411 is fixedly connected to a prying plate 412. A rotating shaft 413 is provided at one end of the telescopic plate 411. The outer surface of the rotating shaft 413 is fixedly connected to the pressure metal plate 409. The prying plate 412 will generate an extrusion force on the pressure metal plate 407 when the rotating rod 410 is running.

[0022] In one embodiment of the present invention, the center line of the metal circular plate 402 and the center line of the pressure metal plate 409 are both on the same center line, so that the pressure metal plate 409 can stably run on the path when it moves forward or backward due to thermal expansion and contraction, and the number of the prying plate 412, the telescopic plate 411, the rotating rod 410 and the rotating shaft 413 is two groups, and the two groups of prying plates 412, the two groups of telescopic plates 411, the two groups of rotating rods 410 and the two groups of rotating shafts 413 are mirror-imaged on both sides of the center plane of the pressure metal plate 409, so that the pressure metal plate 409 can stably pry the pressure metal plate 407 during the downward pressing process, and the number of the high temperature resistant springs 408 is two. A plurality of high temperature resistant springs 408 are arranged in a circular array on the outer surface of the pressure metal plate 407, so that the pressure metal plate 407 can stably transmit pressure. A pressure component 5 is provided on the outer surface of the pressure metal plate 409, and the pressure component 5 includes an extension plate 501. The outer surface of the pressure metal plate 409 is fixedly connected with the extension plate 501, and the outer surface of the extension plate 501 is fixedly connected with a metal semi-arc plate 502. The metal semi-arc plate 502 is adapted to the conical rubber cylinder 403, so that the metal semi-arc plate 502 can pressurize the outer surface of the conical rubber cylinder 403 when it descends synchronously with the pressure metal plate 409, so that the sealing effect of the rubber plate ring 405 is better.

[0023] In addition, in order to solve the problem that the lack of physical properties will affect the change of its volume during thermal expansion and contraction, resulting in an imperfect sealing effect, in the utility model, when in use, when the sealing effect is not good due to thermal expansion and contraction, the conical rubber cylinder 403 on the metal circular plate 402 will expand due to heat so that the bottom end moves forward, and the expansion of the conical rubber cylinder 403 makes the contact and seal between the rubber plate ring 405 and the upper rubber ring 404 of the flange 1 more firmly, and at the same time, the conical rubber cylinder 403 applies pressure to the pressure metal plate 409, and through transmission, the prying plate 412 squeezes the pressure metal plate 407, making the lower rubber ring 406 more It is close to the flange 1 and the rubber plate ring 405 to increase the sealing effect, and the conical rubber cylinder 403 applies pressure to the pressure metal plate 409, and the telescopic plate 411 is stretched through transmission, and the rotating rod 410 rotates, so that the prying plate 412 squeezes the compressed metal plate 407. Because the pressure metal plate 409 descends, the metal semi-arc plate 502 connected to the extension plate 501 can generate a downward squeezing force on the conical rubber cylinder 403, so that the conical rubber cylinder 403 can better pressurize the upper rubber ring 404, the lower rubber ring 406 and the rubber plate ring 405, so that it is more in line with the flange 1 and has better sealing.

[0024] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A sealing member capable of preventing thermal expansion and contraction, comprising a flange (1), the outer surface of the flange (1) being fixedly connected to a tube body (3), the outer surface of the flange (1) being provided with bolts (2), characterized in that: The outer surface of the flange (1) is provided with a sealing assembly (4), and the sealing assembly (4) comprises: A connecting plate (401), the outer surface of the tube body (3) is fixedly connected to the connecting plate (401), one end of the connecting plate (401) is fixedly connected to a metal circular plate (402), the outer surface of the metal circular plate (402) is fixedly connected to a conical rubber cylinder (403), one end of the conical rubber cylinder (403) is fixedly connected to a pressure metal plate (409), the outer surface of the flange (1) is movably connected to a rubber plate ring (405), and the rubber plate ring (405) is movably connected to an upper rubber ring (404); A high temperature resistant spring (408), the outer surface of the flange (1) is fixedly connected with a high temperature resistant spring (408), one end of the high temperature resistant spring (408) is fixedly connected with a pressure-bearing metal plate (407), the outer surface of the pressure-bearing metal plate (407) is fixedly connected with a lower rubber ring (406), the outer surface of the tube body (3) is rotatably mounted with a rotating rod (410), one end of the rotating rod (410) is fixedly connected with a telescopic plate (411), one end of the telescopic plate (411) is fixedly connected with a prying plate (412), one end of the telescopic plate (411) is provided with a rotating shaft (413), and the outer surface of the rotating shaft (413) is fixedly connected with a pressure-applying metal plate (409).

2. A sealing member capable of preventing thermal expansion and contraction according to claim 1, characterized in that: The center line of the metal circular plate (402) and the center line of the pressure metal plate (409) are both on the same center line.

3. A sealing member capable of preventing thermal expansion and contraction according to claim 1, characterized in that: The prying plate (412), the telescopic plate (411), the rotating rod (410) and the rotating shaft (413) are all arranged in two groups, and the two groups of prying plates (412), the two groups of telescopic plates (411), the two groups of rotating rods (410) and the two groups of rotating shafts (413) are arranged on both sides in a mirror image with the center plane of the pressure metal plate (409).

4. The sealing member capable of preventing thermal expansion and contraction according to claim 1, characterized in that: The number of high temperature resistant springs (408) is several, and the high temperature resistant springs (408) are arranged in a circular array on the outer surface of the pressure-bearing metal plate (407).

5. The sealing member capable of preventing thermal expansion and contraction according to claim 1, characterized in that: The outer surface of the pressure metal plate (409) is provided with a pressure component (5), and the pressure component (5) includes an extension plate (501). The outer surface of the pressure metal plate (409) is fixedly connected to the extension plate (501), and the outer surface of the extension plate (501) is fixedly connected to a metal semi-arc plate (502).

6. A sealing member capable of preventing thermal expansion and contraction according to claim 5, characterized in that: The metal semi-arc plate (502) is matched with the conical rubber cylinder (403).

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