Metal spiral wound gasket structure

Abstract

The utility model relates to the technical field of metal spiral wound gaskets, in particular to a metal spiral wound gasket structure which comprises a stainless steel inner ring, a compression-resistant mechanism is arranged on the outer side of the stainless steel inner ring, the compression-resistant mechanism comprises connecting grooves formed in the upper side and the lower side of the stainless steel inner ring, and clamping inner rings are clamped in the connecting grooves. A special-shaped outer ring is fixedly connected to the side, away from the stainless steel inner ring, of the clamping inner ring, two sets of supporting plates are arranged in the clamping inner ring, the side, away from the stainless steel inner ring, of the special-shaped outer ring is in a concave shape, and an extrusion block is fixedly connected to the inner side wall of the special-shaped outer ring. According to the utility model, the stainless steel inner ring is matched with the compression-resistant mechanism, and the flexible graphite ring on the outer side of the V-shaped inner stainless steel ring is utilized to increase the overall deformation adaptability, so that the shape of the stainless steel inner ring can be flexibly adjusted when the stainless steel inner ring is stressed or deformed; and the supporting elastic cotton on the two sides extrudes the supporting plate to upwards abut against the elastic gasket and the extension ring so as to improve the elasticity of the edge.

Description

Technical Field

[0001] The utility model relates to the technical field of metal spiral wound gaskets, in particular to a metal spiral wound gasket structure. Background Art

[0002] Metal spiral wound gasket is a composite flat gasket widely used in the engineering field. It realizes multiple functions by alternating winding of metal strips and non-metallic strips. Its functions include improving sealing performance, having elasticity and deformation adaptability, and high temperature resistance and corrosion resistance. Through V-shaped or W-shaped geometric cross-section and alternating layer structure, metal spiral wound gasket can flexibly deform when subjected to stress while maintaining sealing.

[0003] After searching, the patent document with announcement number CN219755334U provides a metal spiral wound gasket with a hook on the outer ring: This utility model relates to the technical field of sealing spiral wound gaskets, and discloses a metal spiral wound gasket with a hook on the outer ring, comprising a body, the body comprising an inner ring, a winding member, an outer ring, a hanging ear and a sealing ring, the outer wall of the body being fixedly provided with a sealing ring, and the outer walls on the left and right sides of the sealing ring being fixedly provided with hanging ears. The metal spiral wound gasket with a hook on the outer ring is provided with hanging ears. The hanging ears can be installed by clamping the hanging ears with a special clamping tool when encountering a deeper and smaller pipe, or by hooking with a wire. After the metal spiral wound gasket is placed in the specified position, the wire is loosened to complete the installation, eliminating the need for manual labor or operators to go down the pipe to operate.

[0004] The above technical solution has the problem of poor elastic performance during use, resulting in reduced sealing performance and the risk of leakage after long-term use.

[0005] Therefore, it is necessary to invent a metal spiral wound gasket structure to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a metal spiral wound gasket structure, which improves the elasticity of the structure by cooperating with a stainless steel inner ring and a pressure-resistant mechanism, so as to solve the problem of poor elastic performance in the prior art, resulting in reduced sealing and the risk of leakage after long-term use.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal wound gasket structure, including a stainless steel inner ring, the outer side of the stainless steel inner ring is provided with a pressure-resistant mechanism, the pressure-resistant mechanism includes connecting grooves opened on the upper and lower sides of the stainless steel inner ring, the inside of the connecting groove is clamped with a clamping inner ring, the side of the clamping inner ring away from the stainless steel inner ring is fixedly connected to a special-shaped outer ring, two groups of support plates are provided inside the clamping inner ring, the side of the special-shaped outer ring away from the stainless steel inner ring is concave, the inner side wall of the special-shaped outer ring is fixedly connected with an extrusion block, the inner side wall of the special-shaped outer ring is provided with supporting elastic cotton, and the cross-sectional width of the upper and lower sides of the supporting elastic cotton is greater than its middle width, the connecting groove, the clamping inner ring and other structures are coordinated and staggered to provide pressure resistance and the elastic force of the supporting elastic cotton is used to make the support plate rise to improve the overall elasticity.

[0008] Preferably, annular grooves are provided on both the upper and lower sides of the stainless steel inner ring, and graphite gaskets are installed inside the annular grooves, providing space for partial elastic deformation through the graphite gaskets.

[0009] Preferably, an extension ring is fixedly connected to the outer side of the top of the stainless steel inner ring and the extension ring is arranged above the support plate. A mounting groove is provided on the top of the extension ring, and the elasticity is further improved by the cooperation between the extension ring and the mounting groove.

[0010] Preferably, an elastic gasket is installed on the inner side wall of the installation groove, and the elastic gasket is made of asbestos, which improves the elasticity and makes the structure more resistant to high temperatures.

[0011] Preferably, a V-shaped inner stainless steel ring is wound inside the stainless steel inner ring, and several circles of flexible graphite rings are provided on the outer side wall of the V-shaped inner stainless steel ring, thereby increasing the deformation adaptability and enabling the stainless steel inner ring to flexibly adjust its shape when subjected to pressure or deformation, thereby maintaining sealing performance and adapting to different working conditions.

[0012] Preferably, both sides of the stainless steel inner ring are connected with connecting bars, and the surface of the connecting bars is provided with fixing grooves, and the connecting bars and the fixing grooves cooperate to facilitate fixed installation to prevent the stainless steel inner ring from deviating.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] Through the cooperation of the stainless steel inner ring and the pressure-resistant mechanism, when the stainless steel inner ring as a whole is subjected to pressure, the flexible graphite ring on the outer side of the V-shaped inner stainless steel ring is first used to increase the overall deformation adaptability, so that the stainless steel inner ring can flexibly adjust its shape when subjected to pressure or deformation, thereby maintaining sealing performance and adapting to different working conditions, and the supporting elastic cotton on both sides is used to extrude the support plate upward to support the elastic gasket and the extension ring to improve the elasticity of the edge, and the elastic gasket is used to further improve the elasticity and heat resistance of the structure, and the shape of the special-shaped outer ring and the extrusion block is used to limit the direction of the elastic release of the supporting elastic cotton, and finally the connection strip and the fixing groove are used to facilitate fixed installation to prevent it from deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0019] Figure 4 For the utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0020] Description of reference numerals:

[0021] 1. Stainless steel inner ring; 2. Compression-resistant mechanism; 201. Connecting groove; 202. Snap-on inner ring; 203. Support plate; 204. Special-shaped outer ring; 205. Extrusion block; 206. Support elastic cotton; 3. V-shaped inner stainless steel ring; 4. Graphite gasket; 5. Elastic gasket; 6. Extension ring; 7. Mounting groove; 8. Connecting strip; 9. Fixing groove. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The utility model provides Figure 1-4The metal spiral wound gasket structure shown includes a stainless steel inner ring 1, and a pressure-resistant mechanism 2 is provided on the outer side of the stainless steel inner ring 1. The pressure-resistant mechanism 2 includes connecting grooves 201 opened on the upper and lower sides of the stainless steel inner ring 1. The inner side of the connecting groove 201 is clamped with a clamping inner ring 202, so that it becomes a multi-layer structure supporting each other. The side of the clamping inner ring 202 away from the stainless steel inner ring 1 is fixedly connected to a special-shaped outer ring 204, and two groups of support plates 203 are provided inside the clamping inner ring 202. The side of the special-shaped outer ring 204 away from the stainless steel inner ring 1 is concave to facilitate the extrusion of subsequent parts. The inner side wall of the special-shaped outer ring 204 is fixedly connected to an extrusion block 205, and the inner side wall of the special-shaped outer ring 204 is provided with supporting elastic cotton 206 The cross-sectional width of the upper and lower sides of the supporting elastic cotton 206 is greater than its middle width, so that the supporting elastic cotton 206 can only extend to the upper and lower sides, and the connecting groove 201, the clamping inner ring 202 and other structures are used to coordinate and support each other to provide pressure resistance and use the elastic force of the supporting elastic cotton 206 to make the support plate 203 rise to improve the overall elasticity. Annular grooves are provided on the upper and lower sides of the stainless steel inner ring 1, and a graphite gasket 4 is installed inside the annular groove. The graphite gasket provides space for partial elastic deformation. The outer side of the top of the stainless steel inner ring 1 is fixedly connected to an extension ring 6, and the extension ring 6 is arranged above the support plate 203. A mounting groove 7 is provided on the top of the extension ring 6, and the cooperation between the extension ring 6 and the mounting groove 7 is used to further improve its elasticity.

[0024] Refer to the instruction manual Figure 1-4 , the inner wall of the mounting groove 7 is installed with an elastic gasket 5, which is made of asbestos, which improves its elasticity and makes the structure more resistant to high temperature. The interior of the stainless steel inner ring 1 is wrapped with a V-shaped inner stainless steel ring 3, and the outer wall of the V-shaped inner stainless steel ring 3 is provided with several circles of flexible graphite rings, thereby increasing the deformation adaptability, so that the stainless steel inner ring 1 can flexibly adjust its shape when subjected to pressure or deformation, thereby maintaining sealing performance and adapting to different working conditions. Both sides of the stainless steel inner ring 1 are connected with connecting strips 8, and the surface of the connecting strip 8 is provided with a fixing groove 9. The connection strip 8 and the fixing groove 9 are used to facilitate fixed installation to prevent it from deviating. Through the cooperation of the stainless steel inner ring 1 and the pressure-resistant mechanism 2, the stainless steel When the steel inner ring 1 as a whole is subjected to pressure, the flexible graphite ring on the outside of the V-shaped inner stainless steel ring 3 is first used to increase the overall deformation adaptability, so that the stainless steel inner ring 1 can flexibly adjust its shape when subjected to pressure or deformation, thereby maintaining sealing performance and adapting to different working conditions, and then squeeze the support plate 203 upward through the supporting elastic cotton 206 on both sides to push the elastic gasket 5 and the extension ring 6 to improve the elasticity of the edge, and use the elastic gasket 5 to further improve the elasticity and heat resistance of the structure, and use the shape of the special-shaped outer ring 204 and the extrusion block 205 to limit the direction of the elastic release of the supporting elastic cotton 206, and finally facilitate fixed installation through the cooperation of the connecting strip 8 and the fixing groove 9 to prevent it from deviation.

[0025] This utility works as follows:

[0026] Refer to the instruction manual Figure 1-4 When the stainless steel inner ring 1 is subjected to pressure, the flexible graphite ring outside the V-shaped inner stainless steel ring 3 is first used to increase the overall deformation adaptability, so that the stainless steel inner ring 1 can flexibly adjust its shape when subjected to pressure or deformation, thereby maintaining sealing performance and adapting to different working conditions, and then squeeze the support plate 203 upwards through the supporting elastic cotton 206 on both sides to push the elastic gasket 5 and the extension ring 6 to improve the elasticity of the edge, and use the elastic gasket 5 to further improve the elasticity and heat resistance of the structure, and use the shape of the special-shaped outer ring 204 and the extrusion block 205 to limit the direction of the elastic release of the supporting elastic cotton 206, and finally facilitate fixed installation through the cooperation of the connecting strip 8 and the fixing groove 9 to prevent it from deviating.

[0027] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A metal spiral wound gasket structure, comprising a stainless steel inner ring (1), characterized in that: The outer side of the stainless steel inner ring (1) is provided with a pressure-resistant mechanism (2), and the pressure-resistant mechanism (2) includes connecting grooves (201) opened on the upper and lower sides of the stainless steel inner ring (1), the inner side of the connecting groove (201) is clamped with a clamping inner ring (202), and the side of the clamping inner ring (202) away from the stainless steel inner ring (1) is fixedly connected to a special-shaped outer ring (204), and the inside of the clamping inner ring (202) is provided with two groups of support plates (203), and the side of the special-shaped outer ring (204) away from the stainless steel inner ring (1) is concave, and the inner side wall of the special-shaped outer ring (204) is fixedly connected to an extrusion block (205), and the inner side wall of the special-shaped outer ring (204) is provided with supporting elastic cotton (206), and the cross-sectional widths of the upper and lower sides of the supporting elastic cotton (206) are greater than the middle width thereof.

2. A metal spiral wound gasket structure according to claim 1, characterized in that: Annular grooves are provided on both the upper and lower sides of the stainless steel inner ring (1), and graphite gaskets (4) are installed inside the annular grooves.

3. The metal spiral wound gasket structure according to claim 1, characterized in that: An extension ring (6) is fixedly connected to the outer side of the top of the stainless steel inner ring (1), and the extension ring (6) is arranged above the support plate (203). A mounting groove (7) is provided on the top of the extension ring (6).

4. A metal spiral wound gasket structure according to claim 3, characterized in that: An elastic gasket (5) is installed on the inner side wall of the installation groove (7), and the elastic gasket (5) is made of asbestos.

5. The metal spiral wound gasket structure according to claim 1, characterized in that: A V-shaped inner stainless steel ring (3) is wound inside the stainless steel inner ring (1), and a plurality of flexible graphite rings are provided on the outer side wall of the V-shaped inner stainless steel ring (3).

6. The metal spiral wound gasket structure according to claim 1, characterized in that: Both sides of the stainless steel inner ring (1) are connected to connecting strips (8), and the surface of the connecting strips (8) is provided with fixing grooves (9).

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