Combined sealing ring

Abstract

The utility model discloses a combined type sealing ring which comprises a packing ring and mould pressing rings, the two ends of the packing ring are respectively provided with an end face cover ring I in an adhesive mode, the two ends of each mould pressing ring are respectively provided with an end face cover ring II in an adhesive mode, and the mould pressing rings with the end face cover rings II are coaxially and mutually fixed in an adhesive mode. Packing rings with first end face cover rings are fixedly bonded to the two ends of the multiple die pressing rings correspondingly; the mold pressing ring is of a vortex line type structure, and a sandwich material is wound on the inner side of the mold pressing ring. Through the combination of the packing ring and the mold pressing ring, the sealing reliability in the whole using process is improved, the elasticity and the sealing performance of the mold pressing ring are further improved through the sandwich material wound in the mold pressing ring, and the sealing reliability in the using process is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a combined sealing ring. Background Art

[0002] In the process of industrial production, valves are widely used in various piping systems, and the sealing problem of high-temperature and high-pressure valves has gradually attracted people's attention and attention. Once the medium leaks externally, it will not only cause great economic losses, but also may seriously endanger personal safety.

[0003] Normally, flexible graphite sealing rings are used to seal high-temperature valves. The cross-sectional shapes of commonly used graphite sealing rings are square, trapezoidal, parallelogram, V-shaped, M-shaped, etc. The materials of graphite sealing rings include single flexible graphite, metal and graphite composite, and graphite resin filling, etc., which are often only suitable for sealing mediums of medium and low fluids. When used in high-temperature and high-pressure valves, since the corners of the graphite sealing rings are the weakest positions, once they are affected by high-pressure media, they will be damaged first, and gradually accumulate and expand to cause further damage, resulting in low sealing reliability and safety of high-pressure valves, and short life of graphite sealing rings. For this reason, we propose a combined sealing ring to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a combined sealing ring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined sealing ring, comprising a packing ring and a molded ring, the two ends of the packing ring are respectively bonded with an end face cover ring 1, the two ends of the molded ring are respectively bonded with an end face cover ring 2, the molded ring with the end face cover ring 2 is provided with a plurality of coaxially bonded and fixed to each other, and the two ends of the plurality of molded rings are respectively fixedly bonded with the packing ring with the end face cover ring 1;

[0006] The molded ring is a spiral structure, and a sandwich material is wound inside the molded ring.

[0007] Preferably, the sandwich material is made of carbon fiber material, and the molded ring is made of graphite paper material.

[0008] Preferably, the sizes of the end face cover ring 1 and the end face cover ring 2 are consistent, and a plurality of semicircular notches are provided on the edges of the end face cover ring 1 and the end face cover ring 2, and the semicircular notches are evenly distributed around the circumference.

[0009] Compared with the prior art, the beneficial effects of the utility model are: through the combination of the packing ring and the molded ring, the sealing reliability during overall use is improved, and the sandwich material wound inside the molded ring further increases the elasticity and sealing of the molded ring, further improving the sealing reliability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the packing ring structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the molded ring of the utility model;

[0013] Figure 4 This is a schematic diagram of the molded ring structure of the utility model.

[0014] In the figure: packing ring 1, end cover ring 1 2, molded ring 3, end cover ring 2 4, semicircular notch 5, sandwich material 6. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example 1

[0017] Reference Figure 1 , 2 , which is the first embodiment of the utility model, and provides a combined sealing ring, including a packing ring 1 and a molded ring 3, the two ends of the packing ring 1 are respectively bonded with an end face cover ring 1 2, the two ends of the molded ring 3 are respectively bonded with an end face cover ring 2 4, the molded ring 3 with the end face cover ring 2 4 is provided with a plurality of coaxially bonded and fixed to each other, and the two ends of the plurality of molded rings 3 are respectively fixedly bonded with the packing ring 1 with the end face cover ring 1 2;

[0018] The molded ring 3 is a vortex-shaped structure, and a sandwich material 6 is wound inside the molded ring 3. The two ends of the molded ring 3 are coaxially fixed and bonded to the end face cover ring 2 4, thereby forming the molded ring 3 as a whole, and the two ends of the packing ring 1 are coaxially fixed and bonded to the end face cover ring 1 2, thereby forming the packing ring 1 as a whole, and then multiple molded rings 3 with end face cover rings 2 4 are coaxially bonded and fixed to each other, and finally, the two ends of multiple molded rings 3 with end face cover rings 2 4 are bonded and fixed to the packing ring 1 with end face cover ring 1 2, thereby forming a packing ring 1 as shown in the figure. Figure 1In the combined structure shown, the inner diameter and outer diameter of the end face cover ring 1 2 and the end face cover ring 2 4 are equal, and equally divided semicircular notches 5 are opened at the edges, which improves the adhesion between the end face cover ring 1 2 and the packing ring 1, and the end face cover ring 2 4 and the molded ring 3. The end face cover ring 1 2 and the end face cover ring 2 4 can be made of graphite paper, mica paper, vermiculite paper, PTFE film or metal platinum sheet material, and the material of the molded ring 3 can be graphite paper, mica paper, vermiculite paper, PTFE film or metal platinum sheet. The molded ring 3 with a vortex-shaped structure has a sandwich material 6 wound inside, and the material of the sandwich material 6 can be glass fiber, carbon fiber, ceramic fiber or basalt fiber.

[0019] Example 2

[0020] Reference Figure 1-4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment. Specifically, the material of the sandwich material 6 can be inorganic fibers such as glass fiber, carbon fiber, ceramic fiber, or basalt fiber, and the material of the molded ring 3 can be graphite paper, mica paper, vermiculite paper, PTFE film, or metal platinum sheet.

[0021] Specifically, the sizes of the end face cover ring 1 2 and the end face cover ring 2 4 are consistent, and a plurality of semicircular notches 5 are provided on the edges of the end face cover ring 1 2 and the end face cover ring 2 4, and the semicircular notches 5 are evenly distributed around the circumference. The inner diameter and outer diameter of the end face cover ring 1 2 and the end face cover ring 2 4 are equal, and the edges are provided with equally divided semicircular notches 5, which improves the adhesion between the end face cover ring 1 and the packing ring 1, and between the end face cover ring 2 4 and the molded ring 3.

[0022] Example 3

[0023] Reference Figure 1-4 , which is the third embodiment of the utility model. This embodiment is based on the above two embodiments. When combined, the two ends of the molded ring 3 are coaxially fixed and bonded to the end face cover ring 2 4, thereby forming the whole of the molded ring 3, and the two ends of the packing ring 1 are coaxially fixed and bonded to the end face cover ring 1 2, thereby forming the whole of the packing ring 1, and then multiple molded rings 3 with end face cover rings 2 4 are coaxially bonded and fixed to each other, and finally, the two ends of multiple molded rings 3 with end face cover rings 2 4 are respectively bonded and fixed to the packing ring 1 with the end face cover ring 1 2, thereby forming the following Figure 1 In the combined structure shown, the inner diameter and outer diameter of the end face cover ring 1 2 and the end face cover ring 2 4 are equal, and equally divided semicircular notches 5 are opened at the edges, which improves the adhesion between the end face cover ring 1 2 and the packing ring 1, and the end face cover ring 2 4 and the molded ring 3. The end face cover ring 1 2 and the end face cover ring 2 4 can be made of graphite paper, mica paper, vermiculite paper, PTFE film or metal platinum sheet material, and the material of the molded ring 3 can be graphite paper, mica paper, vermiculite paper, PTFE film or metal platinum sheet. The molded ring 3 with a vortex-shaped structure has a sandwich material 6 wound inside, and the material of the sandwich material 6 can be glass fiber, carbon fiber, ceramic fiber or basalt fiber.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined sealing ring, comprising a packing ring (1) and a molded ring (3), characterized in that: The two ends of the packing ring (1) are respectively bonded with an end face cover ring (2), and the two ends of the die pressing ring (3) are respectively bonded with an end face cover ring (4). The die pressing ring (3) with the end face cover ring (4) is provided with a plurality of coaxially bonded and fixed to each other, and the two ends of the plurality of die pressing rings (3) are respectively fixedly bonded to the packing ring (1) with the end face cover ring (2); The molded ring (3) is a spiral structure, and a sandwich material (6) is wound inside the molded ring (3).

2. A combined sealing ring according to claim 1, characterized in that: The sandwich material (6) is made of carbon fiber material, and the mold ring (3) is made of graphite paper material.

3. The combined sealing ring according to claim 1, characterized in that: The sizes of the end face cover ring 1 (2) and the end face cover ring 2 (4) are consistent, and the edges of the end face cover ring 1 (2) and the end face cover ring 2 (4) are provided with a plurality of semicircular notches (5), and the semicircular notches (5) are evenly distributed around the circumference.

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