High-temperature-resistant metal spiral wound gasket

Abstract

The utility model discloses a high-temperature-resistant metal spiral-wound gasket and relates to the technical field of spiral-wound gaskets, the high-temperature-resistant metal spiral-wound gasket comprises a sealing ring, a fixed inner ring is arranged on the inner side wall of the sealing ring, a fixed outer ring is arranged on the outer side wall of the sealing ring, the sealing ring comprises a metal temperature-resistant belt and a temperature-resistant filling belt, and the metal belt and the filling belt are wound to form a ring shape. First fixing parts are arranged on the two sides of the sealing ring, the first fixing parts are connected with the metal belt and the filling belt, and second fixing parts connected with the first fixing parts are arranged on the fixing inner ring and the fixing outer ring. The fixing inner ring and the fixing outer ring are arranged on the inner side and the outer side of the sealing ring, the sealing ring is supported and fixed, and the situation that the sealing ring is scattered and fails due to the fact that the metal belt and the filling belt which surround each other in the sealing ring are scattered is prevented; the metal belt and the filling belt are prevented from being damaged by high temperature, and the high-temperature-resistant effect of the metal spiral-wound gasket is improved.

Description

Technical Field

[0001] This application relates to the field of spiral wound gasket technology, and in particular to a high-temperature resistant metal spiral wound gasket. Background Technology

[0002] Metal spiral wound gaskets are a widely used type of sealing gasket. They are the most resilient of the semi-metallic sealing gaskets and are made by alternately winding V-shaped or W-shaped thin steel strips with various fillers.

[0003] However, as the ambient temperature rises, the metal spiral wound gasket is prone to direct contact with heat sources during use, which can lead to high-temperature damage to the gasket.

[0004] Regarding the aforementioned technologies, the inventors believe that as the ambient temperature rises, metal spiral wound gaskets are prone to direct contact with heat sources during use, which can lead to high-temperature damage to the metal spiral wound gaskets. Utility Model Content

[0005] The purpose of this application is to provide a high-temperature resistant metal spiral wound gasket to improve the problem that the metal spiral wound gasket is easily damaged by high temperature when it comes into direct contact with a heat source during use as the ambient temperature rises.

[0006] This application provides a high-temperature resistant metal spiral wound gasket, which adopts the following technical solution:

[0007] A high-temperature resistant metal spiral wound gasket includes a sealing ring. The inner wall of the sealing ring is provided with a fixing inner ring, and the outer wall of the sealing ring is provided with a fixing outer ring. The sealing ring includes a metal heat-resistant strip and a heat-resistant filler strip, which are wound together in a ring shape. First fixing parts are provided on both sides of the sealing ring, and the first fixing parts are connected to the metal heat-resistant strip and the heat-resistant filler strip. Second fixing parts connected to the first fixing parts are provided on the fixing inner ring and the fixing outer ring.

[0008] By adopting the above technical solution, the inner and outer fixed rings are set on the inner and outer sides of the sealing ring to support and fix the sealing ring, preventing the metal heat-resistant strips and heat-resistant filling strips that are wrapped around each other in the sealing ring from dispersing and causing the sealing ring to fall apart and fail. The sealing ring is protected by the first fixing part set on the sealing ring and the second fixing part fixing the first fixing part, preventing the metal heat-resistant strips and heat-resistant filling strips in the sealing ring from being damaged by high temperature, and making the metal spiral wound gasket more heat-resistant.

[0009] Optionally, the cross-section of the metal heat-resistant strip and the heat-resistant filling strip is V-shaped, and extension strips are provided at both ends of the metal heat-resistant strip and the heat-resistant filling strip.

[0010] By adopting the above technical solution, the cross-section of the metal heat-resistant tape and the heat-resistant filler tape is V-shaped, which gives the metal heat-resistant tape and the heat-resistant filler tape a certain degree of elasticity, allowing the extension tapes at both ends to make better contact with the sealing equipment and improve the sealing effect of the metal spiral wound gasket.

[0011] Optionally, the extension strips on the heat-resistant metal strip and the heat-resistant filling strip are flush with each other, the extension strip is in contact with the first fixing part, and a fixing rod is inserted into the extension strip in the radial direction of the sealing ring formed by the heat-resistant metal strip and the heat-resistant filling strip.

[0012] By adopting the above technical solution, the extension strips on the metal heat-resistant strip and the heat-resistant filler strip are made flush with each other and in contact with the first fixing part, preventing the height of the metal heat-resistant strip and the heat-resistant filler strip from intersecting and affecting the sealing effect of the sealing ring. By inserting a fixing rod along the radial direction of the sealing ring through the extension strip, the metal heat-resistant strip and the heat-resistant filler strip in the sealing ring are fixed, so that the height of the extension strips on the metal heat-resistant strip and the heat-resistant filler strip is kept flush, preventing the metal heat-resistant strip and the heat-resistant filler strip in the sealing ring from starting to misalign during the use of the metal spiral wound gasket, which would cause the metal spiral wound gasket to fail.

[0013] Optionally, the first fixing part includes a high-temperature resistant protective gasket, which is attached to both ends of the extension strip away from the metal heat-resistant strip and the heat-resistant filling strip. The protective gasket is provided with connecting strips extending from both sides near the fixing inner ring and the fixing outer ring, and the connecting strips are connected to the second fixing part.

[0014] By adopting the above technical solution, the high-temperature resistant protective gasket is attached to the extension strip, and the height of the metal heat-resistant strip and the heat-resistant filling strip is controlled to improve the sealing effect of the sealing ring. The protective gasket and the connecting strip insulate the sealing ring and extend the service life of the sealing ring in high-temperature environments.

[0015] Optionally, a connecting ring is provided at one end of the connecting strip away from the protective pad, the connecting ring extending away from the metal heat-resistant strip and the heat-resistant filling strip, and the connecting ring is connected to the second fixing part.

[0016] By adopting the above technical solution, a connecting ring is extended from the connecting strip on the first protective gasket. The first protective gasket is fixed by connecting the connecting ring to the second fixing part, which prevents the first protective gasket from separating from the sealing ring and exposing the sealing ring to a high-temperature environment, thus preventing damage to the sealing ring.

[0017] Optionally, the second fixing part includes a high-temperature resistant protective gasket, the protective gasket having a connecting groove on the side near the sealing ring, the connecting groove fitting with the connecting ring, the protective gasket surrounding the sealing ring and connecting to the connecting ring, and the protective gasket being connected to the inner fixing ring and the outer fixing ring.

[0018] By adopting the above technical solution, a connecting groove is opened on the second protective gasket. The connecting groove fits with the connecting ring to fix the connecting ring. When the first protective gasket and the sealing ring are squeezed, the connecting ring on the first protective gasket is squeezed into the first connecting groove, so that the first protective gasket can shrink together with the sealing ring, so that the first protective gasket can better insulate the sealing ring.

[0019] Optionally, the inner and outer rings are provided with fixing grooves on both sides, the inner wall of the fixing groove is connected to the second protective pad, and a connecting rod is inserted into the second protective pad at a position away from the connecting groove and in the fixing groove.

[0020] By adopting the above technical solution, fixing grooves corresponding to the second protective gasket are opened on the inner and outer fixing rings to position the second protective gasket. The second protective gasket is fixed by the connecting rods inserted on the inner and outer fixing rings to prevent the first and second protective gaskets from detaching from the sealing ring and causing the sealing ring to be damaged in a high-temperature environment; at the same time, it is convenient to replace the protective gaskets.

[0021] Optionally, the inner ring is provided with a protrusion on the side near the heat-resistant metal strip and the heat-resistant filling strip, the protrusion being in contact with the V-shaped heat-resistant metal strip and the heat-resistant filling strip, and the outer ring is provided with a groove on the side wall near the heat-resistant metal strip and the heat-resistant filling strip that is in contact with the V-shaped heat-resistant metal strip and the heat-resistant filling strip.

[0022] By adopting the above technical solution, a protrusion corresponding to the V-shaped cross-section of the metal heat-resistant strip and the heat-resistant filling strip is set on the fixed inner ring, and a groove corresponding to the V-shaped cross-section is opened on the fixed outer ring to fix the sealing ring composed of the metal heat-resistant strip and the heat-resistant filling strip, so as to prevent the sealing ring from separating from the fixed outer ring and the fixed inner ring and causing the sealing ring to fall off.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The heat-resistant metal strip and heat-resistant filler strip are made of high-temperature resistant materials to improve the heat resistance of the sealing ring formed by the winding of the heat-resistant metal strip and heat-resistant filler strip. The cross-section of the heat-resistant metal strip and heat-resistant filler strip is V-shaped, which gives the heat-resistant metal strip and heat-resistant filler strip a certain degree of elasticity, allowing the extension strips at both ends to make better contact with the sealing equipment, thereby improving the sealing effect of the metal spiral wound gasket. The high-temperature resistant protective gasket is attached to the extension strip. The height of the heat-resistant metal strip and heat-resistant filler strip is controlled to improve the sealing effect of the sealing ring. The protective gasket and connecting strip insulate the sealing ring, thereby increasing the service life of the sealing ring in high-temperature environments.

[0025] 2. A connecting groove is made on the second protective gasket. The connecting groove fits into the connecting ring to fix the connecting ring. When the first protective gasket and the sealing ring are compressed, the first protective gasket is squeezed into the connecting groove, allowing the first protective gasket to contract with the sealing ring. This allows the first protective gasket to better insulate the sealing ring. Fixing grooves corresponding to the second protective gasket are made on the inner and outer fixing rings to position the second protective gasket. The second protective gasket is fixed by connecting rods inserted into the second protective gasket and the inner and outer fixing rings to prevent the first and second protective gaskets from detaching from the sealing ring and causing the sealing ring to be damaged in a high-temperature environment.

[0026] 3. Ensure that the extension strips on the heat-resistant metal strip and the heat-resistant filler strip are flush with each other and in contact with the first fixing part. This prevents the heights of the heat-resistant metal strip and the heat-resistant filler strip from intersecting, which could affect the sealing effect of the sealing ring. By inserting fixing rods along the radial direction of the sealing ring through the extension strips, the heat-resistant metal strip and the heat-resistant filler strip in the sealing ring are fixed in place, ensuring that the heights of the extension strips on the heat-resistant metal strip and the heat-resistant filler strip are flush. This prevents the heat-resistant metal strip and the heat-resistant filler strip in the sealing ring from becoming misaligned during use, which could cause the metal spiral wound gasket to fail. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a high-temperature resistant metal spiral wound gasket.

[0028] Figure 2 This is a partial cross-sectional view of a high-temperature resistant metal spiral wound gasket;

[0029] Figure 3 yes Figure 2 A magnified view of part A in the image.

[0030] In the diagram, 1 is the sealing ring; 12 is the metal heat-resistant strip; 121 is the extension strip; 122 is the fixing rod; 13 is the heat-resistant filling strip; 2 is the fixing inner ring; 21 is the fixing groove; 22 is the protrusion; 3 is the fixing outer ring; 31 is the groove; 4 is the first fixing part; 41 is the first protective gasket; 411 is the connecting strip; 412 is the connecting ring; 5 is the second fixing part; 51 is the second protective gasket; 511 is the connecting groove; 512 is the connecting rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.

[0032] A high-temperature resistant metal spiral wound gasket, as described in the reference Figure 1 and Figure 2 The sealing ring 1 comprises a sealing ring 1 formed by intertwining a high-temperature resistant metal strip 12 and a high-temperature resistant filling strip 13. The high-temperature resistant metal strip 12 is a zirconium diboride strip, and the high-temperature resistant filling strip 13 is a flexible high-purity nuclear-grade graphite strip. The cross-sections of the high-temperature resistant metal strip 12 and the high-temperature resistant filling strip 13 are V-shaped. An integrally formed extension strip 121 is provided at both ends of the high-temperature resistant metal strip 12 and the high-temperature resistant filling strip 13. The extension strip 121 is made of the same material as the high-temperature resistant metal strip 12 and the high-temperature resistant filling strip 13. A metal fixing rod 122 is inserted into the extension strip 121 along the radial direction of the sealing ring 1 to fix the extension strip 121 of the high-temperature resistant metal strip 12 and the high-temperature resistant filling strip 13, prevent the high-temperature resistant metal strip 12 and the high-temperature resistant filling strip 13 from misaligning, keep the height of the extension strip 121 flush, and improve the sealing effect of the sealing ring 1.

[0033] Reference Figures 1 to 3 A metal fixing inner ring 2 is installed on the inner ring of the sealing ring 1. A metal protrusion 22 is integrally formed on the outer circular side wall of the fixing inner ring 2 near the sealing ring 1. The protrusion 22 on the fixing inner ring 2 fits into the recessed position of the V-shaped section of the sealing ring 1. A metal fixing outer ring 3 is installed on the outer ring of the sealing ring 1, so that the groove 31 opened on the inner circular side wall of the fixing outer ring 3 near the sealing ring 1 fits into the protruding part of the V-shaped section of the sealing ring 1, thereby fixing the sealing ring 1 and preventing the metal heat-resistant strip 12 and heat-resistant filling strip 13 in the sealing ring 1 from dispersing. Fixing grooves 21 are opened on both sides of the fixing inner ring 2 and the fixing outer ring 3, and the second fixing part 5 is fixed through the fixing grooves 21.

[0034] Reference Figure 2 and Figure 3The protective gasket 41 of the first fixing part 4 is bonded to both sides of the sealing ring 1. The protective gasket 41 is a special high-temperature resistant asbestos gasket. The protective gasket 41 is connected to the extension 121 of the metal heat-resistant strip 12 and the heat-resistant filling strip 13 of the sealing ring 1, so that the extension 121 and the metal heat-resistant strip 12 are flush. On both sides of the protective gasket 41 near the fixing inner ring 2 and the fixing outer ring 3, there are connecting strips 411 and connecting rings 412 integrally formed with the protective gasket 41. The connecting strips 411 are aligned with the inner and outer circular sidewalls of the sealing ring 1. The sealing ring 1 is insulated by blocking the flow of heat. The second protective gasket 51 of the second fixing part 5 is installed in the fixing groove 21 on the fixing inner ring 2 and the fixing outer ring 3. The second protective gasket 51 is a high temperature resistant metal gasket. The second protective gasket 51 is fixed by inserting the metal connecting rod 512 into the second protective gasket 51 and the fixing groove 21. A connecting groove 511 is opened on the second protective gasket 51. The second protective gasket 51 is fixed to the connecting ring 412 of the first protective gasket 41 through the connecting groove 511, thus fixing the first protective gasket 41.

[0035] The implementation principle of this application embodiment is as follows:

[0036] The heat-resistant metal strip 12 and the heat-resistant filler strip 13 are intertwined, making the extension strips 121 on the heat-resistant metal strip 12 and the heat-resistant filler strip 13 flush with each other. A fixing rod 122 is inserted into the extension strip 121 along the radial direction of the encircling heat-resistant metal strip 12 and the heat-resistant filler strip 13 to support the extension strip 121, forming a sealing ring 1. A fixing inner ring 2 is installed on the inner ring of the sealing ring 1, so that the protrusion 22 on the fixing inner ring 2 fits against the recessed position of the V-shaped cross-section of the sealing ring 1. A fixing outer ring 3 is installed on the outer ring of the sealing ring 1, so that the groove 31 on the fixing outer ring 3 fits against the protruding part of the V-shaped cross-section of the sealing ring 1, fixing the sealing ring 1 and preventing the heat-resistant metal strip 12 and the heat-resistant filler strip 13 in the sealing ring 1 from dispersing. A high-temperature resistant protective gasket 41 is then attached. The protective gasket 41 is attached to both sides of the sealing ring 1, so that the connecting strip 411 of the protective gasket 41 is attached to the inner and outer circular sidewalls of the sealing ring 1 to insulate the sealing ring 1. The protective gasket 51 is installed in the fixing groove 21 opened on the fixing inner ring 2 and the fixing outer ring 3. The connecting groove 511 of the protective gasket 51 is in contact with the connecting ring 412 around the connecting strip 411. When the protective gasket 41 and the sealing ring 1 are squeezed, the connecting ring 412 on the protective gasket 41 is squeezed into the connecting groove 511, so that the protective gasket 41 can shrink together with the sealing ring 1, so that the protective gasket 41 can better insulate the sealing ring 1. The protective gasket 51 is fixed by inserting the connecting rod 512 into the protective gasket 51, the fixing inner ring 2, and the fixing outer ring 3, forming a metal spiral wound gasket. By setting high-temperature resistant protective gaskets on both sides of the sealing ring 1, the sealing ring 1 is insulated. The protective gaskets are supported by the extension 121 of the metal heat-resistant strip 12 and the heat-resistant filling strip 13 in the sealing ring 1, so that the metal heat-resistant strip 12 and the heat-resistant filling strip 13 are flush, thereby improving the sealing effect of the metal spiral wound gasket and making the high-temperature resistance of the metal sealing gasket better.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-temperature resistant metal spiral wound gasket, characterized in that: The sealing ring (1) includes a sealing ring (1), a fixed inner ring (2) is provided on the inner side wall of the sealing ring (1), and a fixed outer ring (3) is provided on the outer side wall of the sealing ring (1). The sealing ring (1) includes a metal heat-resistant strip (12) and a heat-resistant filling strip (13). The metal heat-resistant strip (12) and the heat-resistant filling strip (13) are intertwined in a ring shape. A first fixing part (4) is provided on both sides of the sealing ring (1). The first fixing part (4) is connected to the metal heat-resistant strip (12) and the heat-resistant filling strip (13). A second fixing part (5) is provided on the fixed inner ring (2) and the fixed outer ring (3) and is connected to the first fixing part (4).

2. The high-temperature resistant metal spiral wound gasket according to claim 1, characterized in that: The cross-section of the metal heat-resistant strip (12) and the heat-resistant filling strip (13) is V-shaped, and extension strips (121) are provided at both ends of the metal heat-resistant strip (12) and the heat-resistant filling strip (13).

3. The high-temperature resistant metal spiral wound gasket according to claim 2, characterized in that: The extension strips (121) on the heat-resistant metal strip (12) and the heat-resistant filling strip (13) are flush with each other. The extension strips (121) are in contact with the first fixing part (4). The extension strips (121) are fitted with fixing rods (122) in the radial direction of the sealing ring (1) formed by the heat-resistant metal strip (12) and the heat-resistant filling strip (13).

4. The high-temperature resistant metal spiral wound gasket according to claim 3, characterized in that: The first fixing part (4) includes a high-temperature resistant protective pad (41), which is attached to the two ends of the extension strip (121) away from the metal heat-resistant strip (12) and the heat-resistant filling strip (13). The protective pad (41) is provided with connecting strips (411) extending from both sides of the inner fixing ring (2) and the outer fixing ring (3), and the connecting strips (411) are connected to the second fixing part (5).

5. The high-temperature resistant metal spiral wound gasket according to claim 4, characterized in that: A connecting ring (412) extends from one end of the connecting strip (411) away from the protective pad (41). The connecting ring (412) extends from the connecting strip (411) away from the metal heat-resistant strip (12) and the heat-resistant filling strip (13). The connecting ring (412) is connected to the second fixing part (5).

6. The high-temperature resistant metal spiral wound gasket according to claim 5, characterized in that: The second fixing part (5) includes a high-temperature resistant protective gasket two (51). The protective gasket two (51) has a connecting groove (511) on the side near the sealing ring (1). The connecting groove (511) fits into the connecting ring (412). The protective gasket two (51) surrounds the sealing ring (1) and is connected to the connecting ring (412). The protective gasket two (51) is connected to the fixing inner ring (2) and the fixing outer ring (3).

7. A high-temperature resistant metal spiral wound gasket according to claim 6, characterized in that: The inner fixed ring (2) and the outer fixed ring (3) are provided with fixing grooves (21) on both sides. The inner sidewall of the fixing groove (21) is connected to the second protective pad (51). The second protective pad (51) is located away from the connecting groove (511) and a connecting rod (512) is inserted in the fixing groove (21).

8. A high-temperature resistant metal spiral wound gasket according to claim 2, characterized in that: The inner fixed ring (2) has a protrusion (22) on one side near the metal heat-resistant strip (12) and the heat-resistant filling strip (13). The protrusion (22) fits into the V-shaped metal heat-resistant strip (12) and the heat-resistant filling strip (13). The outer fixed ring (3) has a groove (31) on its side wall near the metal heat-resistant strip (12) and the heat-resistant filling strip (13) that fits into the V-shaped metal heat-resistant strip (12) and the heat-resistant filling strip (13).

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