High-temperature-resistant fiber packing
By using the aerogel elastomer and metal mesh in the wrapping layer to fix it in high-temperature resistant pans, combined with the high-temperature fiber layer, the problem of untimely decomposition and reset of the pans in high-temperature environment is solved, and good at high temperatures is achieved Sealing performance and stability.
Patent Information
- Application Number
- CN202323480690.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The existing high-temperature resistant packs are easily decomposed in high-temperature environments above 800℃, resulting in unfixed seals and leaks. The existing solutions cannot effectively prevent the problem of untimely reset after extrusion.
The wrapping layer is equipped with an aerogel-filled elastomer and fixed through a metal mesh. It combines a high-temperature resistant fiber layer and aerogel elastomer to ensure that the packs maintain shape in a high-temperature environment and reset in time.
Maintain sealing performance in ultra-high temperature environments to prevent untimely resetting caused by extrusion, avoid leakage, and enhance the high temperature resistance and sealing performance of the pack.
Smart Images
Figure CN222141960U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packing, in particular to a high temperature resistant fiber packing. Background Art
[0002] In the prior art, packing used for sealing has a wide range of uses. Packing, also called sealing filler, is usually woven from softer linear materials and filled in the sealing cavity through strips to achieve sealing. The earliest packing seal was to plug fibers such as cotton and linen in the leakage channel to prevent liquid leakage. It was mainly used as a shaft seal for water-lifting machinery. At present, high-temperature resistant packing is usually woven from graphite or carbon fiber, and usually has good self-lubrication and thermal conductivity, low friction coefficient, strong versatility and other characteristics. However, when the existing packing is used at a temperature exceeding 800°C, woven materials such as graphite and carbon fiber will quickly decompose in an oxidizing atmosphere, resulting in a loose seal and leakage. For this reason, we propose a high-temperature resistant fiber packing. Utility Model Content
[0003] Based on this, it is necessary to provide a high-temperature resistant fiber packing to address the above-mentioned technical problems. An elastomer filled with aerogel is arranged in the wrapping layer to prevent the packing from not being able to reset in time after being squeezed. The elastomer is wrapped and fixed by a metal mesh. The high-temperature resistant fiber layer arranged in the wrapping layer and the high-temperature resistant aerogel elastomer added inside cooperate with each other, so that the packing can still maintain a good shape in an ultra-high temperature environment, and can reset in time after being squeezed, thereby avoiding untimely reset after being squeezed by external force, resulting in poor sealing and leakage.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A high temperature resistant fiber packing, comprising:
[0006] An elastic body located in the middle, wherein the outer ring of the elastic body is wrapped with a wrapping layer;
[0007] The outer layer of the elastomer is provided with a metal mesh, and the metal mesh is tightly fitted with the inner side of the wrapping layer, and the wrapping layer includes a high temperature resistant fiber layer.
[0008] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the elastomer is filled with aerogel.
[0009] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the elastomer includes aerogel and a fiber layer, and the fiber layer is interwoven in the inner cavity of the aerogel.
[0010] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the aerogel includes silica aerogel.
[0011] As a preferred embodiment of the high temperature resistant fiber packing provided by the utility model, the metal mesh of the outer layer of the elastomer is woven by a plurality of metal wires spirally wrapped around the outside of the elastomer.
[0012] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the high temperature resistant fiber layer includes alumina fibers.
[0013] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the high temperature resistant fiber layer includes quartz fiber.
[0014] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the high temperature resistant fiber layer is formed by interweaving alumina fibers and quartz fibers.
[0015] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the elastomer includes a cylindrical structure or a square structure, and the wrapping layer includes a cylindrical structure or a square cylindrical structure.
[0016] As a preferred implementation of the high temperature resistant fiber packing provided by the utility model, the diameter of the elastomer is 3 mm to 10 mm, and the thickness of the outer wall of the wrapping layer is 0.8 mm to 1.2 mm.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] The utility model provides a high-temperature resistant fiber packing, in which an elastomer filled with aerogel is arranged in a wrapping layer to prevent the packing from failing to reset in time after being squeezed, and the elastomer is wrapped and fixed by a set metal mesh, and the high-temperature resistant fiber layer arranged in the wrapping layer and the high-temperature resistant aerogel elastomer added inside cooperate with each other, so that the packing can still maintain a good shape in an ultra-high temperature environment and can reset in time after being squeezed, thereby avoiding the occurrence of unrealistic sealing and leakage due to untimely reset after being squeezed by external force. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 The overall structural diagram provided by the utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure provided by the utility model.
[0022] The markings in the figure are as follows:
[0023] 1. Elastomer; 2. Wrapping layer; 3. Metal mesh. DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0025] As described in the background art, when the existing packing is used at a temperature exceeding 800° C., braided materials such as graphite and carbon fiber will quickly decompose in an oxidizing atmosphere, resulting in a poor seal and causing leakage.
[0026] Specifically, please refer to Figure 1-Figure 2 , a high temperature resistant fiber packing, comprising:
[0027] An elastic body 1 located in the middle, wherein the outer ring of the elastic body 1 is wrapped with a wrapping layer 2;
[0028] The outer layer of the elastic body 1 is provided with a metal mesh 3, and the metal mesh 3 is tightly fitted with the inner side of the wrapping layer 2, and the wrapping layer 2 includes a high temperature resistant fiber layer.
[0029] The utility model provides a high-temperature resistant fiber packing, in which an elastomer 1 filled with aerogel is arranged in a wrapping layer 2, which is used to prevent the packing from not being able to reset in time after being squeezed, and the elastomer 1 is wrapped and fixed by a set metal mesh 3. The high-temperature resistant fiber layer arranged in the wrapping layer 2 and the high-temperature resistant aerogel elastomer 1 added inside cooperate with each other, so that the packing can still maintain a good shape in an ultra-high temperature environment, and can be reset in time after being squeezed, thereby avoiding the untimely reset after being squeezed by external force, resulting in poor sealing and leakage.
[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0033] Example
[0034] Please refer to Figure 1 and Figure 2 A high temperature resistant fiber packing has an elastomer 1 in the middle, the elastomer 1 is filled with aerogel, and the outer ring of the elastomer 1 is wrapped with a wrapping layer 2 to prevent the packing from being squeezed and unable to be reset in time.
[0035] Preferably, the elastomer 1 includes aerogel and a fiber layer. The fiber layer is made of high temperature resistant fiber material. The fiber layer is interwoven in the inner cavity of the aerogel, which can make the elastomer 1 rebound more quickly and increase the strength of the packing. Preferably, the aerogel includes but is not limited to silica aerogel.
[0036] It is worth mentioning that Figure 2 As shown, the outer layer of the elastomer 1 is provided with a metal mesh 3, the metal mesh 3 is closely attached to the inner side of the wrapping layer 2, the metal mesh 3 is closely in contact with the inner wall of the elastomer 1, and the metal mesh 3 is closely in contact with the inner wall of the wrapping layer 2.
[0037] In addition, if Figure 1 As shown, the metal mesh 3 of the outer layer of the elastomer 1 is woven by a plurality of metal wires spirally wrapped around the outside of the elastomer 1 . The metal mesh 3 restrains the elastomer 1 and fixes the overall structure of the elastomer 1 .
[0038] The wrapping layer 2 includes a high temperature resistant fiber layer, which includes but is not limited to alumina fibers and quartz fibers. The high temperature resistant alumina fibers or quartz fibers are woven to form a wrapping layer 2 to achieve high temperature resistance. It can withstand a high temperature environment of 1400°C and meet the use environment with more packings.
[0039] Preferably, the high temperature resistant fiber layer is formed by interweaving alumina fibers and quartz fibers, thereby improving the high temperature resistance of the wrapping layer 2 .
[0040] In addition, the elastomer 1 includes a cylindrical structure or a square structure, and the wrapping layer 2 includes a cylindrical structure or a square cylindrical structure. The elastomer 1 and the wrapping layer 2 are cylindrical structures or square structures as a whole, which is convenient for filling them in the sealing cavity and filling the sealing cavity by extrusion to seal. It has good self-lubrication and thermal conductivity, a small friction coefficient, and strong versatility.
[0041] It is worth mentioning that the diameter of the elastomer 1 is 3 mm to 10 mm, and the outer wall thickness of the wrapping layer 2 is 0.8 mm to 1.2 mm. It has better sealing performance, can be used in high temperature environments, and has higher stability.
[0042] The use process of the high-temperature resistant fiber packing provided by the utility model is as follows: an elastomer 1 filled with aerogel is arranged in a wrapping layer 2 to prevent the packing from not being able to reset in time after being squeezed, and the elastomer 1 is wrapped and fixed by a set metal mesh 3. The high-temperature resistant fiber layer arranged in the wrapping layer 2 cooperates with the high-temperature resistant aerogel elastomer 1 added inside, so that the packing can still maintain a good shape in an ultra-high temperature environment and can reset in time after being squeezed, thereby avoiding the untimely reset after being squeezed by external force, resulting in poor sealing and leakage.
[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0044] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.
Claims
1. A high temperature resistant fiber packing, characterized in that: It includes: An elastic body (1) located in the middle, wherein the outer ring of the elastic body (1) is wrapped with a wrapping layer (2); The outer layer of the elastomer (1) is provided with a metal mesh (3), the metal mesh (3) is tightly fitted to the inner side of the wrapping layer (2), and the wrapping layer (2) includes a high-temperature resistant fiber layer.
2. The high temperature resistant fiber packing according to claim 1, characterized in that: The elastomer (1) is filled with aerogel.
3. A high temperature resistant fiber packing according to claim 2, characterized in that: The elastomer (1) comprises an aerogel and a fiber layer, and the fiber layer is interwoven in the inner cavity of the aerogel.
4. A high temperature resistant fiber packing according to claim 3, characterized in that: The aerogel comprises silica aerogel.
5. The high temperature resistant fiber packing according to claim 1, characterized in that: The metal mesh (3) on the outer layer of the elastic body (1) is woven from a plurality of metal wires spirally wrapped around the outer side of the elastic body (1).
6. The high temperature resistant fiber packing according to claim 1, characterized in that: The high temperature resistant fiber layer includes alumina fibers.
7. The high temperature resistant fiber packing according to claim 1, characterized in that: The high temperature resistant fiber layer includes quartz fiber.
8. The high temperature resistant fiber packing according to claim 1, characterized in that: The high temperature resistant fiber layer is formed by interweaving alumina fibers and quartz fibers.
9. The high temperature resistant fiber packing according to claim 1, characterized in that: The elastomer (1) comprises a cylindrical structure or a square structure, and the wrapping layer (2) comprises a cylindrical structure or a square cylindrical structure.
10. The high temperature resistant fiber packing according to claim 1, characterized in that: The diameter of the elastic body (1) is 3 mm to 10 mm, and the thickness of the outer wall of the wrapping layer (2) is 0.8 mm to 1.2 mm.