A seal ring having a flexible skeleton

Abstract

This utility model relates to the field of sealing ring technology and discloses a sealing ring with a flexible skeleton. It uses a flexible, deformable material to replace the traditional metal skeleton structure. The flexible pressure ring and the rubber sealing ring are integrally vulcanized, which is not only easy to process and low in cost, but also has good compatibility with rubber, higher bonding strength, no cracking, and is easy to install and maintain. Furthermore, the flexible pressure ring combines rigidity with its deformable structural characteristics. During installation, the flexible pressure ring can deform to perfectly adapt to and fit the groove structure. Compared with the traditional metal skeleton, it has higher installation sealing performance, contact stability, and service life. The outer diameter of the flexible skeleton is larger than the groove, optimizing the problem of volume slippage in open grooves. An internal support is provided inside the flexible pressure ring. The internal support further improves the axial rigidity support force of the flexible pressure ring, ensuring the contact support stability of the axial side of the sealing ring end, and improving the sealing performance of the sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, specifically a sealing ring with a flexible skeleton. Background Technology

[0002] In oil pipelines, to improve the working sealing performance of the pipe body, a special leak-proof sealing ring needs to be installed at the end pipe joint. Currently, most leak-proof sealing rings use copper or stainless steel as the pressure-resistant rings at the end rings, and there are no better alternatives. These leak-proof sealing rings with metal skeletons usually require an installation hammer for installation. During the installation process, fatigue cracks or even direct breakage can easily occur inside the metal skeleton. Moreover, they are very difficult to remove and replace during disassembly, making disassembly and maintenance extremely inconvenient. Furthermore, due to the use of rigid end seats, the stability of the sealing contact and the sealing effect are difficult to guarantee, which greatly affects the sealing safety and service life. Therefore, a sealing ring with a flexible skeleton is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a sealing ring with a flexible skeleton to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a sealing ring with a flexible skeleton, comprising a rubber sealing ring and a pressure ring mechanism, wherein the pressure ring mechanism is installed on the end ring sealing side of the rubber sealing ring, and the pressure ring mechanism comprises a flexible anti-pressure ring and an inner support portion;

[0005] The flexible pressure-resistant ring is in the shape of a ring seat and is integrally installed on the lower ring seat of the rubber sealing ring. The inner support is embedded in the interior of the flexible pressure-resistant ring, and the outer edge of the flexible pressure-resistant ring is provided with a deformation groove.

[0006] Preferably, the rubber sealing ring is in the shape of a ring seat, and the top surface of the rubber sealing ring is inclined at the center.

[0007] Preferably, the rubber sealing ring has an inner ring through hole in the middle, and the upper and lower end faces of the rubber sealing ring are provided with end sealing grooves.

[0008] Preferably, the upper part of the outer ring side of the rubber sealing ring is provided with an end ring protrusion, the end ring protrusion is provided in the shape of a ring block on the upper part of the outer ring side of the rubber sealing ring, and the end head of the end ring protrusion is provided with an arc surface.

[0009] Preferably, the lower ring seat of the rubber sealing ring is provided with a mating ring groove, and the flexible pressure-resistant ring is integrally fitted and fixedly installed with the mating ring groove through vulcanization.

[0010] Preferably, the inner support portion is a ring-shaped seat with a semi-circular cross section, and the inner support portion is embedded in the interior of the flexible pressure-resistant ring.

[0011] Preferably, the opening of the inner support portion faces the outer periphery of the flexible pressure-resistant ring, and the deformation groove is formed on the outer periphery of the flexible pressure-resistant ring.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0013] 1. This sealing ring adopts a flexible skeleton end ring sealing structure, using a flexible pressure-resistant ring made of flexible and deformable material to replace the traditional metal skeleton structure. The flexible pressure-resistant ring and the rubber sealing ring are integrally vulcanized and molded, which is not only easy to process and low in cost, but also has good compatibility with rubber, higher bonding strength, no cracking, no shrinkage, easy installation and maintenance. In addition, the flexible pressure-resistant ring has both rigid and deformable structural characteristics. During installation, the flexible pressure-resistant ring can deform to perfectly adapt to the groove structure. Compared with the traditional metal skeleton, it has higher installation sealing performance, contact stability and service life.

[0014] 2. The outer diameter of the flexible skeleton is larger than that of the groove, which can provide an initial clamping force for the initial outer diameter to fit with the metal groove surface of the pipe body during installation, thus optimizing the problem of volume slippage in open grooves. In addition, an inner support part is set inside the flexible anti-pressure ring. The axial rigidity support force of the flexible anti-pressure ring can be further improved through the inner support of the inner support part, ensuring the contact support stability of the axial side of the sealing ring end, which is conducive to improving the sealing performance of the sealing ring. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall upper three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall lower three-dimensional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the rubber sealing ring and the flexible pressure-resistant ring of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall central cross-sectional structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Rubber sealing ring; 2. Flexible pressure-resistant ring; 3. Inner support part; 4. Inner ring through hole; 5. End sealing groove; 6. End ring protrusion; 7. Deformation groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0023] Example

[0024] Please see Figure 1-4 This utility model provides a technical solution: a sealing ring with a flexible skeleton, including a rubber sealing ring 1 and a pressure ring mechanism. Specifically, the rubber sealing ring 1 is made of composite rubber material, such as nitrile rubber, hydrogenated nitrile rubber, fluororubber, or polyurethane, etc., which has good oil resistance, high temperature resistance, corrosion resistance, elasticity, and pressure resistance properties. It serves as the main sealing structure of the sealing ring, as shown in the attached figure. Figure 3 As shown, the rubber sealing ring 1 is in the shape of a ring seat. To improve the axial installation positioning accuracy and anti-offset characteristics of the rubber sealing ring 1, as shown in the attached figure... Figure 4 As shown, the top surface of the rubber sealing ring 1 is sloped in the middle. In order to facilitate the flow of oil, an inner ring through hole 4 is provided in the middle of the rubber sealing ring 1.

[0025] To improve the end-side sealing performance of the rubber sealing ring 1, as shown in the attached... Figure 4 As shown, end sealing grooves 5 are provided on both the upper and lower end faces of the rubber sealing ring 1. In order to improve the sealing performance of the upper part of the rubber sealing ring 1, an end ring protrusion 6 is provided on the upper part of the outer ring side of the rubber sealing ring 1. The end ring protrusion 6 is provided in the shape of a ring block on the upper part of the outer ring side of the rubber sealing ring 1. In order to facilitate the working installation of the rubber sealing ring 1, the end head of the end ring protrusion 6 is provided with an arc surface.

[0026] The pressure ring mechanism is installed on the end ring sealing side of the rubber sealing ring 1 for contact support and sealing of the end ring side of the rubber sealing ring 1. The pressure ring mechanism includes a flexible pressure-resistant ring 2 and an inner support part 3. The flexible pressure-resistant ring 2 is made of a high-hardness, deformable, wear-resistant material, specifically aramid fiber with adhesive, polyester fiber with adhesive, cotton fiber with adhesive, thermoplastic plastic, phenolic resin, etc. It adopts a flexible skeleton-type end ring sealing structure. The flexible pressure-resistant ring 2, made of flexible and deformable material, replaces the traditional metal skeleton structure. The flexible pressure-resistant ring 2 has both rigidity and deformable structural characteristics. During installation, the flexible pressure-resistant ring 2 can deform to perfectly adapt to the groove structure. Compared with the traditional metal skeleton, it has higher installation sealing performance, contact stability and service life.

[0027] As attached Figure 3 As shown, the flexible pressure-resistant ring 2 is in the shape of a ring seat. The flexible pressure-resistant ring 2 is integrally installed on the lower ring seat of the rubber sealing ring 1. Specifically, in order to facilitate the docking installation of the flexible pressure-resistant ring 2, a docking ring groove is provided on the lower ring seat of the rubber sealing ring 1. The flexible pressure-resistant ring 2 is integrally fitted and fixed to the docking ring groove through vulcanization. The flexible pressure-resistant ring 2 and the rubber sealing ring 1 are integrally vulcanized and formed, which is not only easy to process and low in cost, but also has good compatibility with rubber, higher bonding strength, no cracking, no shrinkage, easy installation and maintenance. In addition, the outer diameter of the flexible pressure-resistant ring 2 is interference-fitted, and the outer diameter of the flexible skeleton is larger than that of the groove. During installation, it can provide the initial clamping force for the initial outer diameter to fit with the metal groove surface of the pipe body, optimizing the pain point of volume slippage of the open groove.

[0028] As attached Figure 4 As shown, the inner support part 3 is a ring-shaped metal support part with a semi-arc cross section. Specifically, the inner support part 3 can be made of steel and has good elastic support force. The inner support part 3 is embedded in the interior of the flexible pressure-resistant ring 2. The opening of the inner support part 3 is directly opposite the outer periphery of the flexible pressure-resistant ring 2. The axial rigidity support force of the flexible pressure-resistant ring 2 can be further improved by the inner support part 3, ensuring the contact support stability of the sealing ring end axial side and facilitating the improvement of the sealing performance of the sealing ring. In order to facilitate the deformation of the inner support part 3 and the installation of the sealing ring, a deformation groove 7 is provided on the outer edge of the flexible pressure-resistant ring 2. The deformation groove 7 is opened on the outer periphery of the flexible pressure-resistant ring 2.

[0029] Working principle or structural principle: Both the rubber sealing ring 1 and the flexible pressure-resistant ring 2 are formed by chemical reaction combined with physical pressure. After the forming process of the rubber sealing ring 1 and the flexible pressure-resistant ring 2 are completed, they are assembled and installed by integral vulcanization. This not only makes the processing convenient and low-cost, but also has good compatibility with rubber, higher bonding strength, and prevents cracking and shrinkage, making it easy to install and maintain. During operation, the sealing ring is installed into the groove at the pipe joint through groove fitting, and then the end pipe is tightened to complete the compression and limiting of the sealing ring. During installation, the flexible pressure-resistant ring 2 can deform. It perfectly adapts to the groove structure and has higher installation sealing performance, contact stability and service life compared with traditional metal skeletons. It will not break due to hammering or impact. The outer diameter of the flexible skeleton is larger than that of the groove, which can provide an initial clamping force for the initial outer diameter to fit with the metal groove surface of the pipe body during installation. This optimizes the pain point of volume slippage in open grooves. After installation, the axial rigidity support force of the flexible pressure ring 2 can be further improved by the internal support of the inner support part 3, ensuring stable contact support between the end axial side of the sealing ring and the groove surface of the pipe body, which is conducive to improving the sealing performance of the sealing ring.

[0030] In summary, this sealing ring adopts a flexible skeleton-type end ring sealing structure, using a flexible, deformable material flexible pressure-resistant ring 2 to replace the traditional metal skeleton structure. The structure of the flexible pressure-resistant ring 2 can be rectangular, L-shaped, U-shaped, triangular, etc., and all structural variations fall within the functional scope of this patent. The flexible pressure-resistant ring 2 and the rubber sealing ring 1 are integrally vulcanized, which is not only convenient to process and low in cost, but also has good compatibility with rubber, higher bonding strength, and will not crack or shrink, making it easy to install and maintain. Furthermore, the flexible pressure-resistant ring 2 combines rigidity with its deformable structural characteristics, ensuring a smooth and flexible seal during installation. The pressure ring 2 can deform to perfectly adapt to the groove structure. Compared with the traditional metal skeleton, it has higher installation sealing performance, contact stability and service life. The outer diameter of the flexible skeleton is larger than that of the groove. During installation, it can provide the initial clamping force for the initial outer diameter to fit with the metal groove surface of the pipe body, optimizing the pain point of volume slippage in open grooves. In addition, an inner support part 3 is set inside the flexible pressure ring 2. The axial rigidity support force of the flexible pressure ring 2 can be further improved by the inner support of the inner support part 3, ensuring the contact support stability of the axial side of the sealing ring end, which is conducive to improving the sealing performance of the sealing ring.

[0031] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, without departing from the spirit and teachings of this utility model, the features described in the various embodiments and / or claims of this utility model can be combined and / or combined in various ways, and their shape and structure can be adjusted, not limited to the schematic diagram structure, all with the aim of satisfying the product's functional requirements. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A sealing ring with a flexible skeleton, comprising a rubber sealing ring (1) and a pressure ring mechanism, characterized in that, The pressure ring mechanism is installed on the end ring sealing side of the rubber sealing ring (1), and the pressure ring mechanism includes a flexible pressure-resistant ring (2) and an inner support part (3); The flexible pressure-resistant ring (2) is in the shape of a ring seat. The flexible pressure-resistant ring (2) is integrally installed on the lower ring seat of the rubber sealing ring (1). The inner support part (3) is embedded in the interior of the flexible pressure-resistant ring (2). The outer edge of the flexible pressure-resistant ring (2) is provided with a deformation groove (7).

2. The sealing ring with a flexible skeleton according to claim 1, characterized in that, The rubber sealing ring (1) is in the shape of a ring seat, and the top surface of the rubber sealing ring (1) is set with an inclined surface in the middle.

3. A sealing ring with a flexible skeleton according to claim 2, characterized in that, The rubber sealing ring (1) has an inner ring through hole (4) through the middle, and the upper and lower end faces of the rubber sealing ring (1) are provided with end sealing grooves (5).

4. A sealing ring with a flexible skeleton according to claim 3, characterized in that, The rubber sealing ring (1) has an end ring protrusion (6) on the upper part of the outer ring side. The end ring protrusion (6) is a ring block protruding on the upper part of the outer ring side of the rubber sealing ring (1). The end head of the end ring protrusion (6) is an arc surface.

5. A sealing ring with a flexible skeleton according to claim 4, characterized in that, The lower ring seat of the rubber sealing ring (1) is provided with a mating ring groove, and the flexible pressure-resistant ring (2) is fixedly installed by vulcanization and integrally fitted with the mating ring groove.

6. A sealing ring with a flexible skeleton according to claim 1, characterized in that, The inner support part (3) is a ring seat with a semi-arc cross section, and the inner support part (3) is embedded in the interior of the flexible pressure-resistant ring (2).

7. A sealing ring with a flexible skeleton according to claim 6, characterized in that, The opening of the inner support (3) is directly opposite the outer periphery of the flexible pressure-resistant ring (2), and the deformation groove (7) is opened on the outer periphery of the flexible pressure-resistant ring (2).

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