High-temperature-resistant and high-pressure-resistant graphite packing

Abstract

The utility model relates to the technical field of graphite packing, in particular to high-temperature-resistant and high-pressure-resistant graphite packing which comprises a first protective layer, the outer wall of the first protective layer is connected with a protective structure, the outer wall of the protective structure is connected with the inner wall of a second protective layer, and the protective structure comprises a first outer wrapping layer and a second outer wrapping layer. The inner wall of the first outer wrapping layer is fixedly connected with the outer wall of the first protective layer. Original asbestos materials are changed, flexibility is reduced, deformation after compression is avoided, the impermeable layer on the outer wall of the second outer wrapping layer is made of a polytetrafluoroethylene elastic belt, the tension of the surface of the graphite packing is improved, deformation caused by pulling is prevented, and meanwhile the graphite packing has good water drainage performance. And meanwhile, the second protective layer is matched with the impermeable layer through a polytetrafluoroethylene dispersed latex material to achieve double-layer protection, wrapping type protection is achieved, the protective performance of the graphite packing is improved, and the service life of the graphite packing is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature and high-pressure resistant graphite packing, in particular to a high-temperature and high-pressure resistant graphite packing. Background Art

[0002] Graphite packing is made of graphite wire reinforced with various reinforcing fibers and metal wires and is carefully woven.

[0003] For example, the announcement number is "CN203115100U", a high-temperature and high-pressure resistant graphite packing, the carbon fiber packing layer and the metal wire reinforced graphite packing layer are respectively located on the upper and lower sides of the flexible graphite packing layer. The carbon fiber packing layer, the flexible graphite packing layer and the metal wire reinforced graphite packing layer have the same width. The width of the sheet packing coil is 22-33 mm, which solves the problem that the existing graphite packing in the petroleum field has poor high-temperature and high-pressure resistance, resulting in a short service life. However, the graphite packing is arranged in an overlapping structure during use, and all surfaces of the graphite packing will come into contact with objects. In addition, the internal structural strength of the graphite packing is poor, which will damage the internal structure of the graphite packing, resulting in insufficient protective performance of the graphite packing and shortening the service life of the graphite packing. Utility Model Content

[0004] The utility model aims to solve the problem that the protection performance of graphite packing is insufficient and the service life of the graphite packing is shortened, and a high-temperature and high-pressure resistant graphite packing is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high-temperature and high-pressure resistant graphite packing is designed, comprising a first protective layer, the outer wall of the first protective layer is connected to a protective structure, the outer wall of the protective structure is connected to the inner wall of a second protective layer, the protective structure comprises a first outer cladding layer and a second outer cladding layer, the inner wall of the first outer cladding layer is fixedly connected to the outer wall of the first protective layer, the outer wall of the first outer cladding layer is fixedly connected to the inner wall of the second outer cladding layer, and the outer wall of the second outer cladding layer is fixedly connected to an anti-seepage layer.

[0007] Preferably, the outer wall of the anti-seepage layer is fixedly connected to the inner wall of the second protective layer.

[0008] Preferably, the inner wall of the first protective layer is fixedly connected to the outer wall of the thickening layer.

[0009] Preferably, a reinforcement layer is fixed to the inner wall of the thickened layer.

[0010] Preferably, the inner wall of the reinforcement layer is fixedly connected with an inner cladding layer.

[0011] The utility model proposes a high-temperature and high-pressure resistant graphite packing, which has the following beneficial effects: the first outer covering layer and the second outer covering layer of the outer wall of the first protective layer in the protective structure are made of the material of the blue non-asbestos board themselves, forming a double-layer structural layer, changing the material of the original asbestos, reducing the flexibility, and avoiding deformation after being compressed; the anti-seepage layer of the outer wall of the second outer covering layer is made of the polytetrafluoroethylene elastic belt material, which increases the surface tension of the graphite packing, prevents deformation due to pulling, and has good water release performance; at the same time, the second protective layer realizes double-layer protection through its own polytetrafluoroethylene dispersed latex material and the anti-seepage layer, realizes wrapped protection, improves the protective performance of the graphite packing, and ensures the service life of the graphite packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the connection relationship between the inner cladding and the inner core;

[0014] Figure 3 for Figure 1 Schematic diagram of the structure of A;

[0015] Figure 4 for Figure 1 Schematic diagram of the second protective layer structure.

[0016] In the figure: 1. First protective layer, 2. Protective structure, 201. First outer cladding layer, 202. Second outer cladding layer, 203. Anti-seepage layer, 3. Inner core, 4. Thickening layer, 5. Reinforcement layer, 6. Inner cladding layer, 7. Second protective layer. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Example 1:

[0019] See also Figure 1-4 In this embodiment, a high-temperature and high-pressure resistant graphite packing includes a first protective layer 1, the outer wall of the first protective layer 1 is connected to a protective structure 2, the outer wall of the protective structure 2 is connected to the inner wall of the second protective layer 7, the first protective layer 1 and the second protective layer 7 are both made of polytetrafluoroethylene dispersed latex, the protective structure 2 includes a first outer layer 201 and a second outer layer 202, the inner wall of the first outer layer 201 is fixedly connected to the outer wall of the first protective layer 1, the outer wall of the first outer layer 201 is fixedly connected to the inner wall of the second outer layer 202, the first outer layer 201 and the second outer layer 202 are both made of blue asbestos-free board, and the outer wall of the second outer layer 202 is fixedly connected to an anti-seepage layer 203, and the anti-seepage layer 203 is made of a tetrafluoroethylene elastic belt;

[0020] The first outer covering 201 and the second outer covering of the outer wall of the first protective layer 1 in the protective structure 2 are made of their own blue asbestos-free board material to form a double-layer structural layer, changing the original asbestos material, reducing flexibility, and avoiding deformation after pressure. The anti-seepage layer 203 on the outer wall of the second outer covering 202 is made of tetrafluoroethylene elastic belt material, which increases the surface tension of the graphite packing and prevents deformation due to pulling. At the same time, it has good water release performance. At the same time, the second protective layer 7 is made of its own polytetrafluoroethylene dispersed latex material and cooperates with the anti-seepage layer 203 to achieve double-layer protection, realize wrap-around protection, improve the protective performance of the graphite packing, and ensure the service life of the graphite packing.

[0021] The outer wall of the anti-seepage layer 203 is fixedly connected to the inner wall of the second protective layer 7, the inner wall of the first protective layer 1 is fixedly connected to the outer wall of the thickening layer 4, the inner wall of the thickening layer 4 is fixedly connected to the reinforcing layer 5, the thickening layer 4 and the reinforcing layer 5 are both made of graphite, the inner wall of the reinforcing layer 5 is fixedly connected to the inner cladding 6, and the inner cladding 6 is made of carbon fiber material.

[0022] Working principle:

[0023] Graphite packing (consisting of the first protective layer 1, thickening layer 4, reinforcement layer 5 and inner cladding 6) is used:

[0024] The first protective layer 1 provides good wear-resistant and lubricating properties through its own polytetrafluoroethylene dispersed latex material, which can avoid excessive wear at the docking material when the graphite packing is bent. The first outer layer 201 and the second outer layer of the outer wall of the first protective layer 1 are made of their own blue asbestos-free board material to form a double-layer structural layer, changing the original asbestos material, reducing flexibility, and avoiding deformation after pressure. The anti-seepage layer 203 on the outer wall of the second outer layer 202 is made of polytetrafluoroethylene elastic belt material, which increases the surface tension of the graphite packing and prevents deformation due to pulling. It also has good water-releasing performance. At the same time, the second protective layer 7 achieves double-layer protection through its own polytetrafluoroethylene dispersed latex material and the anti-seepage layer 203, and provides wear resistance for the surface. The thickened layer 4 and the reinforcement layer 5 on the inner wall of the first protective layer 1 are both made of graphite material, and their own collision coefficient is small, which can avoid expansion of the graphite packing due to high temperature. The inner thin layer 6 on the inner wall of the reinforcement layer 5 is made of carbon fiber material to ensure strength while reducing weight.

[0025] Example 2:

[0026] See also Figure 1-4 In this embodiment, a high temperature and high pressure resistant graphite packing further includes an inner core 3, and the outer wall of the inner core 3 is fixedly connected to the inner wall of the inner cladding 6.

[0027] Working principle:

[0028] The inner core 3 is made of stainless steel wire to increase the internal strength of the graphite packing and prevent the graphite packing from breaking when bent.

[0029] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A high temperature and high pressure resistant graphite packing, comprising a first protective layer (1), characterized in that: The outer wall of the first protective layer (1) is connected to a protective structure (2), and the outer wall of the protective structure (2) is connected to the inner wall of the second protective layer (7); The protective structure (2) comprises a first outer cladding layer (201) and a second outer cladding layer (202); the inner wall of the first outer cladding layer (201) is fixedly connected to the outer wall of the first protective layer (1); the outer wall of the first outer cladding layer (201) is fixedly connected to the inner wall of the second outer cladding layer (202); and the outer wall of the second outer cladding layer (202) is fixedly connected to an anti-seepage layer (203).

2. The high temperature and high pressure resistant graphite packing according to claim 1, characterized in that: The outer wall of the anti-seepage layer (203) is fixedly connected to the inner wall of the second protective layer (7).

3. The high temperature and high pressure resistant graphite packing according to claim 1, characterized in that: The inner wall of the first protective layer (1) is fixedly connected to the outer wall of the thickened layer (4).

4. The high temperature and high pressure resistant graphite packing according to claim 1, characterized in that: The inner wall of the thickened layer (4) is fixedly connected with a reinforcement layer (5).

5. The high temperature and high pressure resistant graphite packing according to claim 4, characterized in that: The inner wall of the reinforcement layer (5) is fixedly connected with an inner cladding layer (6).

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