High-temperature-resistant valve filler

Abstract

The utility model discloses high-temperature-resistant valve packing, and relates to the technical field of valve packing. The high-temperature-resistant valve filler comprises a filler body, the filler body comprises a graphite lower filler, a carbon fiber middle-lower filler, a ceramic fiber middle-upper filler and an aluminum silicate fiber upper filler which are sequentially embedded from bottom to top, a lubricant layer is arranged at the inner ring position of the filler body, and an auxiliary reinforcing material is mixed in the filler body. According to the high-temperature-resistant valve filler, the sealing performance of the filler body in a high-temperature environment is remarkably improved by means of the combined design of multiple layers of high-temperature-resistant materials, friction between a valve rod and the filler body is effectively reduced in cooperation with the design of the lubricant layer, the operation smoothness of a valve is improved, auxiliary reinforcing materials are mixed into the filler body, and the service life of the valve is prolonged. The structural strength of the filler main body is remarkably enhanced, so that the filler main body can still keep stable performance in a high-temperature and high-pressure environment, the service life of the valve is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve packing, in particular to a high-temperature resistant valve packing. Background Technique

[0002] Valve packing is a sealing material for dynamic seals, used to fill the packing chamber inside the valve, form a sealing structure around the valve stem, compress the packing through the packing gland, and tighten it by means of torque to ensure the sealing between the valve stem and the valve body and prevent medium leakage.

[0003] Traditional valve packings are prone to problems such as softening, melting or leakage in high-temperature environments, resulting in a decline in sealing performance. Moreover, some valve packings are prone to deformation or rupture in high-temperature and high-pressure environments, affecting the normal use of the valve. Due to the relatively high friction coefficient of valve packings at high temperatures, it is also easy to cause the valve stem to operate smoothly, reduce the service life, and increase the valve maintenance cost. In view of the deficiencies of the prior art, the utility model provides a high-temperature resistant valve packing to solve the above problems. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the utility model provides a high-temperature resistant valve packing. By using a combined design of multiple layers of high-temperature resistant materials, the sealing performance of the packing body in high-temperature environments is significantly improved. The multi-layer structure enables the packing body to adapt to different working conditions. Especially in an environment with large temperature fluctuations, each layer of material can work together to maintain a stable sealing effect. With the design of the lubricant layer, the friction between the valve stem and the packing body is effectively reduced, improving the smooth operation of the valve. By mixing auxiliary strengthening materials in the packing body, the structural strength of the packing body is significantly enhanced, enabling the packing body to maintain stable performance in high-temperature and high-pressure environments, extending the service life of the valve, and reducing the maintenance cost.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A high-temperature resistant valve packing, including a packing body, the packing body is composed of a graphite lower packing, a carbon fiber middle-lower packing, a ceramic fiber middle-upper packing, and a aluminum silicate fiber upper packing that are sequentially nested from bottom to top;

[0006] A lubricant layer is provided at the inner ring position of the packing body, and auxiliary strengthening materials are mixed inside the packing body.

[0007] Preferably, the packing body includes a lower graphite packing ring clamped on the graphite lower packing.

[0008] Preferably, the packing body further includes an upper graphite packing ring clamped on the aluminum silicate fiber upper packing.

[0009] Preferably, grooves are provided at the tops of the lower graphite packing, the middle and lower carbon fiber packing, the upper and middle ceramic fiber packing, the upper aluminum silicate fiber packing, and the lower graphite packing ring. Sealing rings are provided at the bottoms of the lower graphite packing, the middle and lower carbon fiber packing, the upper and middle ceramic fiber packing, the upper aluminum silicate fiber packing, and the upper graphite packing ring, and the sealing rings are fitted into the grooves.

[0010] Preferably, the auxiliary reinforcing material is a metal wire, and the metal wire is arranged inside the packing main body for mixing.

[0011] Preferably, the reinforcing material is a stainless steel corrugated sheet, and the stainless steel corrugated sheet is arranged inside the packing main body for mixing.

[0012] Preferably, the lubricant layer is made of graphite powder, and the graphite powder is arranged on the inner ring of the packing main body.

[0013] The utility model discloses a high-temperature resistant valve packing, and the beneficial effects thereof are as follows:

[0014] This high-temperature resistant valve packing uses a combined design of multiple high-temperature resistant materials, significantly improving the sealing performance of the packing main body in a high-temperature environment. The multi-layer structure enables the packing main body to adapt to different working conditions. Especially in an environment with large temperature fluctuations, each layer of material can work together to maintain a stable sealing effect. With the design of the lubricant layer, the friction between the valve stem and the packing main body is effectively reduced, improving the smooth operation of the valve. By mixing the auxiliary reinforcing material into the packing main body, the structural strength of the packing main body is significantly enhanced, enabling the packing main body to maintain stable performance in a high-temperature and high-pressure environment, extending the service life of the valve, and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

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

[0017] Figure 2 It is a schematic diagram of the structure of the groove of the present utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the sealing ring of the present utility model;

[0019] Figure 4 It is a top view cross-sectional view of the packing main body of the present utility model.

[0020] In the figure: 1. Packing main body; 11. Lower graphite packing; 12. Middle and lower carbon fiber packing; 13. Middle and upper ceramic fiber packing; 14. Upper aluminosilicate fiber packing; 15. Lower graphite packing ring; 16. Upper graphite packing ring; 2. Groove; 3. Sealing snap ring; 4. Auxiliary reinforcing material; 5. Lubricant layer. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] The embodiments of the present application provide a high-temperature resistant valve packing, which solves the problems that traditional valve packings are prone to softening in high-temperature environments, resulting in a decline in sealing performance, and some valve packings are prone to deformation or rupture in high-temperature and high-pressure environments, affecting the normal use of valves. Due to the high friction coefficient of valve packings at high temperatures, it is also easy to cause the valve stem to operate smoothly, reduce the service life, and increase the valve maintenance cost.

[0023] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific embodiments.

[0024] The embodiments of the present utility model disclose a high-temperature resistant valve packing. According to the attached Figures 1-4 As shown, it includes a packing main body 1, and the packing main body 1 is composed of a lower graphite packing 11, a middle and lower carbon fiber packing 12, a middle and upper ceramic fiber packing 13, and an upper aluminosilicate fiber packing 14 that are sequentially nested from bottom to top;

[0025] For this high-temperature resistant valve packing, the packing main body 1 is designed with a multi-layer structure, combining the advantages of different materials. The lower graphite packing 11 is used to provide good lubricity and high-temperature resistance, the middle and lower carbon fiber packing 12 is used to enhance the structural strength of the packing main body 1. At the same time, in cooperation with the design of the middle and upper ceramic fiber packing 13 to improve the high-temperature resistance and corrosion resistance of the packing main body 1. Finally, in combination with the design of the upper aluminosilicate fiber packing 14, excellent heat insulation performance is provided to reduce heat transfer to the inside of the valve.

[0026] A lubricant layer 5 is provided at the inner ring position of the packing main body 1. An auxiliary reinforcing material 4 is mixed inside the packing main body 1. The lubricant layer 5 is made of graphite powder. The graphite powder is arranged at the inner ring of the packing main body 1. Using graphite powder material and arranging the material between the packing main body 1 and the valve stem helps to reduce the friction between the packing main body 1 and the valve stem, improve the sealing performance and operation smoothness of the valve. The use of the auxiliary reinforcing material 4 can enhance the material strength of the packing main body 1 and ensure that the packing main body 1 can still maintain stable performance under high temperature and high pressure environments.

[0027] The auxiliary reinforcing material 4 is a metal wire. The metal wire is arranged and mixed inside the packing main body 1. When processing and forming the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, and aluminum silicate fiber upper packing 14, the metal wire is mixed into the inside of the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, and aluminum silicate fiber upper packing 14.

[0028] The reinforcing material 4 is a stainless steel corrugated sheet. The stainless steel corrugated sheet is arranged and mixed inside the packing main body 1. When processing and forming the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, and aluminum silicate fiber upper packing 14, the stainless steel corrugated sheet is mixed into the inside of the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, and aluminum silicate fiber upper packing 14.

[0029] The use of both the metal wire and the stainless steel corrugated sheet in this device can achieve structural enhancement of the packing main body 1.

[0030] The packing main body 1 includes a lower graphite packing ring 15 snap - connected to the graphite lower packing 11. The packing main body 1 also includes an upper graphite packing ring 16 snap - connected to the aluminum silicate fiber upper packing 14. The lower graphite packing ring 15 and the upper graphite packing ring 16 are respectively snap - connected to the graphite lower packing 11 and the aluminum silicate fiber upper packing 14. Both the lower graphite packing ring 15 and the upper graphite packing ring 16 are in close contact with the valve stem to achieve sealing.

[0031] Grooves 2 are provided at the tops of the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, aluminum silicate fiber upper packing 14, and the lower graphite packing ring 15. Sealing snap rings 3 are provided at the bottoms of the graphite lower packing 11, carbon fiber middle and lower packing 12, ceramic fiber upper and middle packing 13, aluminum silicate fiber upper packing 14, and the upper graphite packing ring 16. The sealing snap rings 3 are fitted into the grooves 2.

[0032] The tops and bottoms of each layer of packing and packing rings are designed with grooves 2 and sealing snap rings 3, and are tightly connected through the fitting method to ensure the overall sealing performance and stability of the packing main body 1.

[0033] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant valve packing, comprising a packing main body (1), characterized in that, The packing main body (1) is composed of a graphite lower packing (11), a carbon fiber middle-lower packing (12), a ceramic fiber middle-upper packing (13), and a kaolin fiber upper packing (14) which are sequentially fitted from bottom to top; A lubricant layer (5) is provided at the inner ring position of the packing main body (1), and an auxiliary reinforcing material (4) is mixed inside the packing main body (1).

2. The high-temperature resistant valve packing according to claim 1, wherein The packing main body (1) includes a lower graphite packing ring (15) snap-connected to the graphite lower packing (11).

3. The high-temperature resistant valve packing according to claim 2, wherein, The packing main body (1) further includes an upper graphite packing ring (16) snap-connected to the kaolin fiber upper packing (14).

4. The high-temperature resistant valve packing according to claim 3, characterized in that, Grooves (2) are formed at the tops of the graphite lower packing (11), the carbon fiber middle-lower packing (12), the ceramic fiber middle-upper packing (13), the kaolin fiber upper packing (14), and the lower graphite packing ring (15). Sealing snap rings (3) are provided at the bottoms of the graphite lower packing (11), the carbon fiber middle-lower packing (12), the ceramic fiber middle-upper packing (13), the kaolin fiber upper packing (14), and the upper graphite packing ring (16). The sealing snap rings (3) are fitted into the grooves (2).

5. A high-temperature resistant valve packing according to claim 1, characterized in that, The auxiliary reinforcing material (4) is a metal wire, and the metal wire is mixed inside the packing main body (1).

6. The high-temperature resistant valve packing according to claim 1, characterized in that, The reinforcing material (4) is a stainless steel corrugated sheet, and the stainless steel corrugated sheet is mixed inside the packing main body (1).

7. The high-temperature resistant valve packing according to claim 1, characterized in that, The lubricant layer (5) is made of graphite powder, and the graphite powder is provided at the inner ring of the packing main body (1).

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