Metal gasket

Abstract

The utility model relates to a metal gasket, which relates to the technical field of gaskets, and comprises a gasket body, a compression-resistant component and a protective component, the gasket body comprises a metal layer and the compression-resistant component arranged in the metal layer; the compression-resistant assembly comprises a plurality of hexagonal compression-resistant layers and elastic filling layers, the hexagonal compression-resistant layers are arranged and combined to form a honeycomb structure, the elastic filling layers are arranged in gaps among the hexagonal compression-resistant layers, and the elastic filling layers are coated with the metal layers; the protection assembly is used for protecting the metal layer. According to the metal gasket, the compressive strength of the metal gasket is enhanced through the compression-resistant assembly.

Description

Technical Field

[0001] This utility model relates to the field of gasket technology, and in particular to a metal gasket. Background Technology

[0002] A gasket is a mechanical sealing element between two objects, usually used to prevent leakage between the two objects due to pressure, corrosion, and natural thermal expansion and contraction of the pipeline. Metal gaskets are made of high-precision, high-hardness sheet material and are usually used in the adjustment and measurement of precision molds or precision hardware, or as a shim, called a precision gasket, sometimes also called a mold gasket or precision gap shim.

[0003] Utility model patent CN204647298U discloses a metal spiral wound gasket for high temperature and high pressure. The gasket is annular in shape, comprising an inner reinforcing ring, an elastic filler ring, and an outer reinforcing ring sequentially from the center to the outer edge. Both the inner and outer reinforcing rings are made of nickel-based alloy Inconel 625. The elastic filler ring comprises several layers of alternately wound metal strips and elastic filler strips. Both the metal strips and the elastic filler strips are V-shaped or W-shaped. The metal strips are made of nickel-based alloy Inconel 625, and the elastic filler strips are mica strips and / or flexible graphite strips.

[0004] The above technical solution increases the compressibility of the metal spiral wound gasket by simply changing the raw material of the metal strip. However, when the spiral wound gasket is fastened to the flange, in addition to the metal strip and the elastic filler strip undergoing certain deformation or even cracking, both the inner and outer reinforcing rings will undergo certain deformation, resulting in poor compressive strength. Utility Model Content

[0005] To enhance the compressive strength of metal gaskets, this invention provides a metal gasket.

[0006] This utility model provides a metal gasket, including a gasket body, a pressure-resistant component and a protective component. The gasket body includes a metal layer and a pressure-resistant component disposed within the metal layer.

[0007] The compression-resistant component includes multiple hexagonal compression-resistant layers and an elastic filling layer. The multiple hexagonal compression-resistant layers are arranged to form a honeycomb structure. The elastic filling layer is disposed in the gap between the multiple hexagonal compression-resistant layers. The metal layer is covered and disposed on the elastic filling layer.

[0008] The protective component is used to protect the metal layer.

[0009] By adopting the above technical solution, when installing the gasket body, the gasket body is placed at the interface, and the gasket body abuts against the side wall of the interface and is compressed. The protective component protects the metal layer. Due to the arrangement of multiple walls and a series of continuous honeycomb mesh structures, the hexagonal compression-resistant layer can distribute the external forces from all directions, making the honeycomb structure much more resistant to compressive forces than any circular or square structure. This improves the compressive strength of existing metal gaskets. The hexagonal structure makes the force distribution more uniform, which helps to disperse pressure and reduce crack propagation. The main body of the elastic filling layer is made of flexible graphite plate, which overcomes the disadvantage of brittleness and has good sealing performance. Therefore, the setting of the hexagonal compression-resistant layer and the elastic filling layer enhances the crack resistance of the metal gasket, effectively improves the compressive strength of existing metal gaskets, and extends the service life of the metal gasket.

[0010] Optionally, an oleophobic layer is fixedly provided on the outer wall of the metal layer.

[0011] Optionally, the protective component includes an inner pad and an outer pad, wherein the inner pad is fitted onto the inner edge of the pad body, and the outer pad is fitted onto the outer edge of the pad body.

[0012] Optionally, the protective component further includes multiple metal strips, which are respectively disposed on the top and bottom walls of the oleophobic layer, and the metal strips are disposed in the gap between the inner and outer pads.

[0013] Optionally, the thickness of both the inner pad and the inner pad is less than the thickness of the metal strip.

[0014] Optionally, the hexagonal compressive layer contains a graphite layer.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. When the gasket body is compressed at the interface, the hexagonal compression-resistant layer, due to the arrangement of multiple walls and a series of continuous honeycomb mesh structures, can distribute the external forces from all directions, making the honeycomb structure much more resistant to compression than any circular or square structure; thus improving the compression resistance of existing metal gaskets. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure;

[0018] Figure 2 It is a sectional view of the overall structure;

[0019] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 10, gasket body; 11, metal layer; 12, oleophobic layer; 20, pressure-resistant component; 21, hexagonal pressure-resistant layer; 22, elastic filler layer; 23, graphite layer; 30, protective component; 31, inner gasket; 32, outer gasket; 33, metal strip. Detailed Implementation

[0021] The following combination Figure 1-Figure 3 The present invention will be described in further detail below.

[0022] This embodiment discloses a metal gasket: (Refer to...) Figure 1-Figure 3 A metal gasket includes a gasket body 10, a pressure-resistant component 20, and a protective component 30. The gasket body 10 includes a metal layer 11 and a pressure-resistant component 20 disposed within the metal layer 11.

[0023] The compression-resistant component 20 includes a plurality of hexagonal compression-resistant layers 21 and an elastic filling layer 22. The plurality of hexagonal compression-resistant layers 21 are arranged in a honeycomb structure. The elastic filling layer 22 is disposed in the gap between the plurality of hexagonal compression-resistant layers 21. The metal layer 11 is covered and disposed on the elastic filling layer 22.

[0024] The protective component 30 is used to protect the metal layer 11.

[0025] By adopting the above technical solution, when installing the gasket body 10, the gasket body 10 is placed at the interface, and the gasket body 10 abuts against the side wall of the interface and is compressed. The protective component 30 protects the metal layer 11. Due to the arrangement of multiple walls and a series of continuous honeycomb mesh structures, the hexagonal anti-compression layer 21 can distribute the external forces from all directions, making the honeycomb structure much more resistant to compressive forces than any circular or square structure. This improves the compressive strength of existing metal gaskets. The hexagonal structure makes the force distribution more uniform, which helps to disperse pressure and reduce crack propagation. The main body of the elastic filling layer 22 is made of flexible graphite plate, which overcomes the disadvantage of brittleness and has good sealing performance. Therefore, the setting of the hexagonal anti-compression layer 21 and the elastic filling layer 22 enhances the crack resistance of the metal gasket, effectively improves the compressive strength of existing metal gaskets, and increases the service life of the metal gasket.

[0026] Reference Figure 2-Figure 3 An oleophobic layer 12 is fixedly provided on the outer wall of the metal layer 11.

[0027] The oleophobic layer 12 is made of PTFE. The surface of the gasket metal is coated with an oleophobic layer 12 to prevent corrosion of the gasket body 10 during connection and to protect the metal surface of the gasket.

[0028] Reference Figure 1-Figure 3The protective component 30 includes an inner pad 31 and an outer pad 32. The inner pad 31 is fitted onto the inner edge of the pad body 10, and the outer pad 32 is fitted onto the outer edge of the pad body 10.

[0029] When the gasket body 10 is installed at the point where the liquid medium flows, the liquid medium is difficult to corrode the gasket body 10 due to the obstruction of the inner gasket 31 during the flow process. The liquid medium at the corner of the pipe interface is also difficult to corrode the gasket body 10 due to the obstruction of the outer gasket 32. Furthermore, both the inner gasket 31 and the outer gasket 32 ​​are elastic, which makes the metal-coated gasket elastic and less prone to corrosion during use.

[0030] Reference Figure 1-Figure 3 The protective component 30 also includes a plurality of metal strips 33, which are respectively disposed on the top and bottom walls of the oleophobic layer 12, and the metal strips 33 are disposed in the gap between the inner pad 31 and the outer pad 32.

[0031] By setting a metal strip 33 on the surface of the gasket, when the flange is sealed, the metal strip 33 is fixed to the pressure-resistant gasket and will not easily slip, reducing the chance of incomplete sealing caused by the gasket slipping.

[0032] Reference Figure 2-Figure 3 The thickness of the inner pad 31 and the inner pad 31 is both less than the thickness of the metal strip 33.

[0033] The metal strip 33 is elastic. When the flange is sealed, the metal strip 33 is fixed as a pressure-resistant gasket and will not slide easily. The metal strip 33 retracts under force until the inner gasket 31 and the inner gasket 31 abut against the side wall at the interface to form a seal and protect the gasket body 10.

[0034] Reference Figure 3 The hexagonal compressive layer 21 contains a graphite layer 23.

[0035] The graphite layer 23 is disposed on the hexagonal compression-resistant layer 21, so that the graphite layer 23 can be used for a long time under the protection of the hexagonal compression-resistant layer 21. The graphite layer 23 is made of graphite wire and is woven and shaped. It has good corrosion resistance, high / low temperature resistance, good compression resilience and high strength.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A metal gasket, characterized in that: It includes a gasket body (10), a pressure-resistant component (20) and a protective component (30). The gasket body (10) includes a metal layer (11) and a pressure-resistant component (20) disposed within the metal layer. The compression-resistant component (20) includes multiple hexagonal compression-resistant layers (21) and an elastic filling layer (22). The multiple hexagonal compression-resistant layers (21) are arranged in a honeycomb structure. The elastic filling layer (22) is disposed in the gap between the multiple hexagonal compression-resistant layers (21). The metal layer (11) is covered and disposed on the elastic filling layer (22). The protective component (30) is used to protect the metal layer (11).

2. The metal gasket according to claim 1, characterized in that: An oleophobic layer (12) is fixedly provided on the outer wall of the metal layer (11).

3. A metal gasket according to claim 2, characterized in that: The protective component (30) includes an inner pad (31) and an outer pad (32). The inner pad (31) is fitted onto the inner edge of the pad body (10), and the outer pad (32) is fitted onto the outer edge of the pad body (10).

4. A metal gasket according to claim 3, characterized in that: The protective component (30) also includes a plurality of metal strips (33), which are respectively disposed on the top and bottom walls of the oleophobic layer (12) and are disposed in the gap between the inner pad (31) and the outer pad (32).

5. A metal gasket according to claim 4, characterized in that: The thickness of the inner pad (31) and the inner pad (33) is both less than the thickness of the metal strip (33).

6. A metal gasket according to claim 1, characterized in that: The hexagonal compressive layer (21) contains a graphite layer (23).

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