High-pressure combined sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a high-pressure combined sealing ring which comprises a main sealing ring, and a supporting assembly is arranged in the main sealing ring in a connected mode. The supporting assembly comprises a supporting ring, a mounting groove is formed in the inner side of the main sealing ring, the supporting ring is connected into the mounting groove, a groove is formed in the main sealing ring, a protrusion is slidably connected into the groove, and one end of the protrusion is fixedly connected to one end of the supporting ring. Compared with the prior art, the high-pressure combined sealing ring has the advantages that rigid support can be provided, excessive deformation of the main sealing ring due to high pressure is effectively prevented, it is ensured that the main sealing ring can still maintain the stable structure under the high pressure, and the overall pressure resistance of the high-pressure combined sealing ring is improved; when the main sealing ring tends to extrude towards the sealing gap, the main sealing ring can be effectively blocked in time, sealing failure caused by extrusion of the main sealing ring is avoided, and the sealing reliability of the high-pressure combined sealing ring is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a high-pressure combined sealing ring. Background Technology

[0002] A sealing ring is a component used in mechanical seals, typically installed between two relatively moving or stationary parts. It fills the gap between the parts through its elastic deformation, thereby preventing fluid (such as liquid or gas) leakage and serving to seal and prevent media leakage. Existing high-pressure combination sealing rings cannot provide rigid support, causing them to easily deform excessively under high pressure, resulting in low overall pressure resistance. Furthermore, when the sealing ring tends to squeeze into the sealing gap, it cannot be stopped in a timely and effective manner, leading to seal failure and reduced sealing reliability. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-pressure combined sealing ring.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure combined sealing ring, including a main sealing ring, wherein a support component that improves the pressure resistance of the main sealing ring is connected inside the main sealing ring;

[0005] The support assembly includes a support ring, an installation groove is provided on the inner side of the main sealing ring, the support ring is connected to the inside of the installation groove, a groove is provided inside the main sealing ring, a protrusion is slidably connected inside the groove, and one end of the protrusion is fixedly connected to one end of the support ring.

[0006] As a further description of the above technical solution:

[0007] Two sets of anti-extrusion rings are fixedly sleeved on the outside of the main sealing ring.

[0008] As a further description of the above technical solution:

[0009] Both sets of anti-extrusion rings are made of high-strength engineering plastics.

[0010] As a further description of the above technical solution:

[0011] The cross-section of the anti-extrusion ring is L-shaped.

[0012] As a further description of the above technical solution:

[0013] The outer side of the anti-extrusion ring is provided with a wear-resistant coating.

[0014] As a further description of the above technical solution:

[0015] The support ring is made of stainless steel.

[0016] As a further description of the above technical solution:

[0017] The main sealing ring is made of nitrile rubber.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, the support component provides rigid support, effectively preventing the main sealing ring from deforming excessively due to high pressure, ensuring that the main sealing ring can maintain structural stability under high pressure, and improving the overall pressure resistance of the high-pressure combined sealing ring.

[0020] In this invention, the anti-extrusion ring can effectively and promptly block the main sealing ring from extruding into the sealing gap, thus preventing sealing failure due to the extrusion of the main sealing ring and improving the sealing reliability of the high-pressure combined sealing ring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-pressure combined sealing ring proposed in this utility model;

[0022] Figure 2 This is a partial structural diagram of a high-pressure combined sealing ring proposed in this utility model. Figure 1 ;

[0023] Figure 3 This is a partial structural diagram of a high-pressure combined sealing ring proposed in this utility model. Figure 2 ;

[0024] Figure 4 This is a cross-sectional view of a high-pressure combined sealing ring proposed in this utility model.

[0025] Legend:

[0026] 1. Main sealing ring; 2. Support assembly; 3. Support ring; 4. Mounting groove; 5. Groove; 6. Protrusion; 7. Anti-extrusion ring. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-4The present invention provides an embodiment of a high-pressure combined sealing ring, comprising a main sealing ring 1, wherein a support component 2 is provided inside the main sealing ring 1 to improve the pressure resistance of the main sealing ring 1;

[0029] The support assembly 2 includes a support ring 3. The inner side of the main sealing ring 1 has an installation groove 4. The support ring 3 is connected to the inside of the installation groove 4. The inside of the main sealing ring 1 has a groove 5. A protrusion 6 is slidably connected inside the groove 5. One end of the protrusion 6 is fixedly connected to one end of the support ring 3.

[0030] Two sets of anti-extrusion rings 7 are fixedly sleeved on the outside of the main sealing ring 1. Both sets of anti-extrusion rings 7 are made of high-strength engineering plastic, which has high strength and rigidity and can withstand the extrusion force on the main sealing ring 1 under high pressure. The cross-section of the anti-extrusion ring 7 is L-shaped, and the outside of the anti-extrusion ring 7 is provided with a wear-resistant coating to reduce wear caused by friction. The support ring 3 is made of stainless steel, which has high strength and hardness and can effectively resist deformation. The main sealing ring 1 is made of nitrile rubber, which is not easily swollen, softened or embrittled by oil and can maintain stable sealing performance for a long time.

[0031] Working principle: First, the main sealing ring 1 is installed in the corresponding sealing groove. The main sealing ring 1 fits against the sealing surface. Under high pressure, the main sealing ring 1 undergoes a certain deformation, further enhancing the sealing effect. The support ring 3 provides rigid support for the main sealing ring 1 to prevent excessive deformation. If the main sealing ring 1 tends to be squeezed into the sealing gap, the anti-extrusion ring 7 can block the main sealing ring 1 from being squeezed out, ensuring the reliability of the seal. The mounting groove 4 and the recess 5 between the main sealing ring 1 and the support ring 3 ensure that the two will not be relatively displaced under high pressure, maintaining the stability of the sealing ring structure. The wear-resistant coating on the outside of the anti-extrusion ring 7 can reduce wear caused by friction during long-term use, extending the service life of the entire high-pressure combined sealing ring.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure combined sealing ring, comprising a main sealing ring (1), characterized in that: The main sealing ring (1) is internally connected to a support assembly (2); The support assembly (2) includes a support ring (3), and the main sealing ring (1) has an installation groove (4) on its inner side. The support ring (3) is connected inside the installation groove (4). The main sealing ring (1) has a groove (5) inside, and a protrusion (6) is slidably connected inside the groove (5). One end of the protrusion (6) is fixedly connected to one end of the support ring (3).

2. The high-pressure combined sealing ring according to claim 1, characterized in that: Two sets of anti-extrusion rings (7) are fixedly sleeved on the outside of the main sealing ring (1).

3. A high-pressure combined sealing ring according to claim 2, characterized in that: Both sets of anti-extrusion rings (7) are made of high-strength engineering plastics.

4. A high-pressure combined sealing ring according to claim 2, characterized in that: The cross-section of the anti-extrusion ring (7) is L-shaped.

5. A high-pressure combined sealing ring according to claim 2, characterized in that: The outer side of the anti-extrusion ring (7) is provided with a wear-resistant coating.

6. A high-pressure combined sealing ring according to claim 1, characterized in that: The support ring (3) is made of stainless steel.

7. A high-pressure combined sealing ring according to claim 1, characterized in that: The main sealing ring (1) is made of nitrile rubber.

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