High-pressure combined sealing ring

Abstract

The utility model relates to the technical field of sealing, and discloses a high-pressure combined sealing ring which comprises a pipeline, a buffering mechanism is arranged on the outer wall of the pipeline, a replaceable lip mechanism is arranged on the outer wall of the buffering mechanism, and the replaceable lip mechanism is used for independently replacing a lip piece when abrasion occurs. An energy storage slow-release mechanism is arranged on the outer wall of the replaceable lip mechanism, a partial pressure slow-release mechanism is arranged on the outer wall of the energy storage slow-release mechanism and used for relieving the problem of lip piece load concentration so as to facilitate partial pressure, and an auxiliary lip is arranged on the outer side of the partial pressure slow-release mechanism. The multiple piston cylinders stretch out and draw back under the action of pressure to achieve pressure division, the piston rods transmit pressure changes, the spring buffers the pressure, the problems that a sealing ring cannot maintain balanced sealing in the pressure changes and lacks a pressure slow release mechanism are solved, abrasion of a main lip opening is relieved, the leakage risk is reduced, and the sealing requirement under the high-pressure complex working condition is met.

Description

Technical Field

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

[0002] High-pressure combination seals are structural components used to perform sealing operations in high-pressure environments. They consist of a sealing body made of special materials and an elastic support body. They are installed at the connection points of components that need to be sealed to prevent fluid leakage, ensure stable operation under high pressure, withstand high pressure, and maintain good sealing performance.

[0003] In high-pressure liquid sealing conditions, pressure fluctuates drastically and fluid media impacts the environment. Traditional sealing structures struggle to maintain stable interface contact over extended periods, leading to leakage due to lip wear and reverse deformation. Therefore, a high-pressure composite sealing ring is proposed to enhance the dynamic response capability of the sealing lip, improve sealing life and impact resistance, and adapt to the complex requirements of high-pressure sealing.

[0004] Existing high-pressure combined sealing rings suffer from wear and leakage risks on the main lip after long-term use. They cannot maintain a balanced seal under bidirectional pressure changes and have drawbacks such as interface peeling and short lifespan. In existing technologies, a double-lip parallel structure is used to improve self-sealing performance. However, in actual use, the double-lip structure is mainly rigid and partitioned. Under high-pressure impact, the main lip is under concentrated load, and fatigue in the lip area is aggravated. At the same time, there is a lack of a mechanism to mitigate sudden pressure, making it difficult to meet the sealing requirements under high-pressure and complex working conditions. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a high-pressure combined sealing ring, which aims to improve the problems of concentrated main lip load and lack of sudden pressure relief mechanism in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure combined sealing ring, comprising a pipe, a buffer mechanism provided on the outer wall of the pipe, a replaceable lip mechanism provided on the outer wall of the buffer mechanism, the replaceable lip mechanism being used to replace the lip piece separately when wear occurs, an energy storage and release mechanism provided on the outer wall of the replaceable lip mechanism, a pressure-distributing release mechanism provided on the outer wall of the energy storage and release mechanism, the pressure-distributing release mechanism being used to alleviate the problem of concentrated lip piece load and facilitate pressure distribution, a secondary lip provided on the outer side of the pressure-distributing release mechanism, a sealing mechanism provided on the outer wall of the secondary lip, an opening and closing mechanism provided on the top of the sealing mechanism, and an installation mechanism provided on the bottom of the sealing mechanism;

[0007] The pressure-releasing mechanism includes multiple piston cylinders, with the opposite sides of the multiple piston cylinders fixedly connected to the inner wall of the secondary lip. Piston rods are fixedly connected between adjacent piston cylinders, springs are fixedly connected between adjacent piston rods, and fitting rings are fixedly connected between adjacent springs. An elastic skeleton ring is fixedly connected to the outer wall of the secondary lip.

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

[0009] The replaceable lip mechanism includes a main lip, the inner wall of which is slidably connected to the outer wall of the pipe, and multiple slide rails are fixedly connected to the outer wall of the main lip. A pull ring is fixedly connected to the top rear side of the main lip, and multiple slide grooves are provided on the inner wall of the energy storage and slow release mechanism.

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

[0011] The energy storage and slow-release mechanism includes a slow-release chamber, the outer wall of which is fixedly connected to the inner wall of the fitting ring, and a pressure-guiding ring groove is fixedly connected to the inner wall of the slow-release chamber.

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

[0013] The sealing mechanism includes a sealing ring, the inner wall of which is fixedly connected to the outer wall of an elastic skeleton ring, and a sealing sheet is fixedly connected to the bottom of the sealing ring.

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

[0015] The opening and closing mechanism includes an opening and closing plate, the bottom of which is fixedly connected to the top of the sealing ring. Pull rods are fixedly connected to the left and right sides of the top of the opening and closing plate, and a locking component is provided at the bottom of the opening and closing plate.

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

[0017] The locking assembly includes two positioning pins, the tops of which are fixedly connected to the bottom left and right sides of the opening and closing piece, respectively, and the sealing ring has two pin points on its top.

[0018] As a further description of the above technical solution:

[0019] The mounting mechanism includes two nuts, the tops of which are fixedly connected to the front and rear sides of the bottom of the sealing plate, and the interior of each nut is threaded with a threaded rod.

[0020] As a further description of the above technical solution:

[0021] The buffer mechanism includes multiple shock-absorbing particles, with the opposite sides of each shock-absorbing particle fixedly connected to the inner wall of the main lip, and buffer rings fixedly connected between adjacent shock-absorbing particles.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, multiple piston cylinders extend and retract under pressure to achieve pressure distribution, the piston rod transmits pressure changes, the spring buffers the pressure, the fitting ring transmits pressure, and the elastic skeleton ring enhances the strength and elasticity of the secondary lip structure. This solves the problems that the sealing ring cannot maintain a balanced seal under pressure changes and lacks a pressure relief mechanism, alleviates the wear of the main lip, reduces the risk of leakage, and meets the sealing requirements under high pressure and complex working conditions.

[0024] 2. In this utility model, the main lip directly contacts the pipeline to achieve the main seal. The main lip is easily replaced by pulling the pull ring through the sliding groove of the slide rail and the energy storage and slow release mechanism. This solves the problem of difficult handling after the main lip is worn, and facilitates timely replacement when the main lip is worn. This extends the overall service life of the sealing ring, improves the durability of the sealing performance, and ensures stable operation under high pressure. Attached Figure Description

[0025] Figure 1 This is a perspective view of a high-pressure combined sealing ring proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the sealing mechanism in a high-pressure combined sealing ring proposed in this utility model;

[0027] Figure 3 This is a split view of the opening and closing mechanism in a high-pressure combined sealing ring proposed in this utility model;

[0028] Figure 4 This is a split view of the pressure-releasing mechanism in a high-pressure combined sealing ring proposed in this utility model;

[0029] Figure 5 This is an exploded view of the replaceable lip mechanism in a high-pressure combined sealing ring proposed in this utility model.

[0030] Legend:

[0031] 1. Pipeline; 2. Secondary lip; 3. Pressure-releasing mechanism; 301. Piston cylinder; 302. Piston rod; 303. Spring; 304. Fitting ring; 305. Elastic skeleton ring; 4. Replaceable lip mechanism; 401. Main lip; 402. Slide rail; 403. Pull ring; 404. Slide groove; 5. Energy storage and release mechanism; 501. Release chamber; 502. Pressure guide ring groove; 6. Sealing mechanism; 601. Sealing ring; 602. Sealing plate; 7. Opening and closing mechanism; 701. Opening and closing plate; 702. Pull rod; 703. Locking assembly; 7031. Positioning pin; 7032. Pin point; 8. Mounting mechanism; 801. Nut; 802. Threaded rod; 9. Buffer mechanism; 901. Shock-absorbing particles; 902. Buffer ring strip. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0033] Reference Figure 1 , Figure 4 and Figure 5 An embodiment of this utility model provides a high-pressure combined sealing ring, including a pipe 1, a buffer mechanism 9 provided on the outer wall of the pipe 1, a replaceable lip mechanism 4 provided on the outer wall of the buffer mechanism 9, the replaceable lip mechanism 4 is used to replace the lip piece separately when wear occurs, an energy storage and slow release mechanism 5 provided on the outer wall of the replaceable lip mechanism 4, a pressure distribution and slow release mechanism 3 provided on the outer wall of the energy storage and slow release mechanism 5, the pressure distribution and slow release mechanism 3 is used to alleviate the problem of concentrated lip piece load and facilitate pressure distribution, a secondary lip 2 is provided on the outer side of the pressure distribution and slow release mechanism 3, a sealing mechanism 6 is provided on the outer wall of the secondary lip 2, an opening and closing mechanism 7 is provided on the top of the sealing mechanism 6, and an installation mechanism 8 is provided on the bottom of the sealing mechanism 6;

[0034] The pressure-relieving mechanism 3 includes multiple piston cylinders 301, which are used to perform telescopic movements under pressure to achieve pressure distribution. The opposite sides of the multiple piston cylinders 301 are fixedly connected to the inner wall of the secondary lip 2. Piston rods 302 are fixedly connected between adjacent piston cylinders 301 to connect the piston cylinders 301 and transmit pressure changes. Springs 303 are fixedly connected between adjacent piston rods 302 to provide elastic force to buffer pressure changes. Fitting rings 304 are fixedly connected between adjacent springs 303 to tightly fit the internal structure and transmit pressure. An elastic skeleton ring 305 is fixedly connected to the outer wall of the secondary lip 2 to enhance the structural strength and elasticity of the secondary lip 2.

[0035] Specifically, the outer wall of pipe 1 is provided with a buffer mechanism 9, which can absorb impact energy and play a buffering role. The outer wall of the buffer mechanism 9 is provided with a replaceable lip mechanism 4, which can be used to replace the lip piece separately when wear occurs. The outer wall of the replaceable lip mechanism 4 is provided with an energy storage and release mechanism 5, which can store and release pressure energy to alleviate pressure fluctuations. The outer wall of the energy storage and release mechanism 5 is provided with a pressure distribution and release mechanism 3, which is used to alleviate the problem of concentrated lip piece load and facilitate pressure distribution. The outer side of the pressure distribution and release mechanism 3 is provided with a secondary lip 2, which plays a certain auxiliary sealing and structural support role. The outer wall of the secondary lip 2 is provided with a sealing mechanism 6, which realizes the main sealing function and provides an installation base for other components. The top of the sealing mechanism 6 is provided with an opening and closing mechanism 7, which is used to open and close the sealing ring for installation and disassembly. The bottom of the sealing mechanism 6 is provided with an installation mechanism 8, which is used to fix the sealing ring in the installation position.

[0036] The pressure-relieving mechanism 3 includes multiple piston cylinders 301. The multiple piston cylinders 301 extend and retract under pressure to achieve pressure distribution. The opposite sides of the multiple piston cylinders 301 are fixedly connected to the inner wall of the secondary lip 2. Piston rods 302 are fixedly connected between adjacent piston cylinders 301. The piston rods 302 connect the piston cylinders 301 to transmit pressure changes. Springs 303 are fixedly connected between adjacent piston rods 302. The springs 303 provide elastic force to buffer pressure changes. Fitting rings 304 are fixedly connected between adjacent springs 303. The fitting rings 304 tightly fit the internal structure to transmit pressure. An elastic skeleton ring 305 is fixedly connected to the outer wall of the secondary lip 2. The elastic skeleton ring 305 enhances the structural strength and elasticity of the secondary lip 2.

[0037] Reference Figure 2 , Figure 4 and Figure 5 The replaceable lip mechanism 4 and the main lip 401 are used to directly contact the pipe 1 to achieve the main sealing function. The inner wall of the main lip 401 is slidably connected to the outer wall of the pipe 1. Multiple slide rails 402 are fixedly connected to the outer wall of the main lip 401, which are used to cooperate with the slide grooves 404 of the energy storage and slow release mechanism 5 to realize the replacement of the main lip 401. A pull ring 403 is fixedly connected to the top rear side of the main lip 401 to facilitate the pulling of the main lip 401 for replacement operation. Multiple slide grooves 404 are provided on the inner wall of the energy storage and slow release mechanism 5. The slide grooves 404 cooperate with the slide rails 402 to realize the replaceable function of the main lip 401.

[0038] Specifically, the replaceable lip mechanism 4 includes a main lip 401, which directly contacts the pipe 1 to achieve the main sealing function. The inner wall of the main lip 401 is slidably connected to the outer wall of the pipe 1. Multiple slide rails 402 are fixedly connected to the outer wall of the main lip 401. The slide rails 402 cooperate with the slide grooves 404 of the energy storage and release mechanism 5 to realize the replacement of the main lip 401. A pull ring 403 is fixedly connected to the top rear side of the main lip 401. The pull ring 403 facilitates the pulling of the main lip 401 for replacement. The inner wall of the energy storage and release mechanism 5 is provided with multiple slide grooves 404. The slide grooves 404 cooperate with the slide rails 402 to realize the replaceable function of the main lip 401.

[0039] Reference Figure 1 , Figure 2 and Figure 5 The energy storage and release mechanism 5 includes a release chamber 501 for storing and releasing pressure energy to mitigate pressure fluctuations. The outer wall of the release chamber 501 is fixedly connected to the inner wall of the fitting ring 304. A pressure guiding ring groove 502 is fixedly connected to the inner wall of the release chamber 501 to guide pressure distribution and make energy release more uniform. The sealing mechanism 6 includes a sealing ring 601 for achieving the main sealing function and providing a mounting base for other components. The inner wall of the sealing ring 601 is fixedly connected to the outer wall of the elastic skeleton ring 305. A sealing plate 602 is fixedly connected to the bottom to enhance the bottom sealing effect and prevent fluid leakage. The opening and closing mechanism 7 includes an opening and closing plate 701 to realize the opening and closing of the sealing ring for installation and disassembly. The bottom of the opening and closing plate 701 is fixedly connected to the top of the sealing ring 601. Pull rods 702 are fixedly connected to the left and right sides of the top of the opening and closing plate 701 to facilitate the operator to pull the opening and closing plate 701. A locking component 703 is provided at the bottom of the opening and closing plate 701 to lock the opening and closing plate 701 to keep the sealing ring in a closed state.

[0040] Specifically, the energy storage and release mechanism 5 includes a release chamber 501, which stores and releases pressure energy to mitigate pressure fluctuations. The outer wall of the release chamber 501 is fixedly connected to the inner wall of the fitting ring 304. A pressure guiding ring groove 502 is fixedly connected to the inner wall of the release chamber 501, which guides the pressure distribution to make energy release more uniform. The sealing mechanism 6 includes a sealing ring 601, which performs the main sealing function and provides a mounting base for other components. The inner wall of the sealing ring 601 is fixedly connected to the outer wall of the elastic skeleton ring 305. A sealing plate 602 is fixedly connected to the bottom of the sealing ring 601. The sealing plate 602 enhances the bottom sealing effect and prevents fluid leakage. The opening and closing mechanism 7 includes an opening and closing plate 701, which enables the opening and closing of the sealing ring for installation and disassembly. The bottom of the opening and closing plate 701 is fixedly connected to the top of the sealing ring 601. Pull rods 702 are fixedly connected to the left and right sides of the top of the opening and closing plate 701. The pull rods 702 facilitate the operator to pull the opening and closing plate 701. A locking component 703 is provided at the bottom of the opening and closing plate 701. The locking component 703 locks the opening and closing plate 701 to keep the sealing ring in a closed state.

[0041] Reference Figure 1 , Figure 3 and Figure 5 The locking assembly 703 includes two positioning pins 7031, which are inserted into the pin points 7032 of the sealing ring 601 to achieve positioning and locking of the opening and closing piece 701. The tops of the two positioning pins 7031 are respectively fixedly connected to the bottom left and right sides of the opening and closing piece 701. The top of the sealing ring 601 has two pin points 7032, which are used to cooperate with the positioning pins 7031 to lock the opening and closing piece 701. The mounting mechanism 8 includes two nuts 801, which are used to cooperate with the threaded rod 802 to fix the sealing ring in the installation position. The top of 1 is fixedly connected to the front and rear sides of the bottom of the sealing plate 602. The two nuts 801 are threaded with threaded rods 802 inside, which are used to screw the nuts 801 into the sealing ring for fastening. The buffer mechanism 9 includes multiple shock-absorbing particles 901, which are used to absorb impact energy and play a buffering role. The opposite sides of the multiple shock-absorbing particles 901 are fixedly connected to the inner wall of the main lip 401. Buffer rings 902 are fixedly connected between the adjacent shock-absorbing particles 901, which are used to connect the shock-absorbing particles 901 to enhance the buffering effect.

[0042] The specific locking component 703 includes two positioning pins 7031. These two positioning pins 7031 are inserted into the pin points 7032 of the sealing ring 601 to achieve positioning and locking of the opening / closing piece 701. The tops of the two positioning pins 7031 are respectively fixedly connected to the bottom left and right sides of the opening / closing piece 701. The top of the sealing ring 601 has two pin points 7032, which cooperate with the positioning pins 7031 to lock the opening / closing piece 701. The mounting mechanism 8 includes two nuts 801. The two nuts 801 cooperate with the threaded rod 802 to fix the sealing ring in the installation position. The top of 01 is fixedly connected to the front and rear sides of the bottom of the sealing plate 602. The two nuts 801 are threaded with threaded rods 802 inside. The threaded rods 802 are screwed into the nuts 801 to tighten the sealing ring. The buffer mechanism 9 includes multiple shock-absorbing particles 901. The multiple shock-absorbing particles 901 absorb impact energy and play a buffering role. The opposite sides of the multiple shock-absorbing particles 901 are fixedly connected to the inner wall of the main lip 401. Buffer rings 902 are fixedly connected between adjacent shock-absorbing particles 901. The buffer rings 902 connect the shock-absorbing particles 901 to enhance the buffering effect.

[0043] Working principle: The sealing ring is fixed in the designated position by the installation mechanism 8. Two nuts 801 are fixed to the front and rear sides of the bottom of the sealing plate 602 respectively. The threaded rod 802 is screwed into the nut 801, thus firmly installing the sealing ring in the required position. When the sealing ring is working, the pressure in the pipe 1 will act on the entire sealing structure, and the buffer mechanism 9 will start to function. Multiple shock-absorbing particles 901 are fixed on the inner wall of the main lip 401 to absorb the impact energy generated by internal pressure changes. Adjacent shock-absorbing particles 901 are connected by buffer rings 902 to further enhance the buffering effect and reduce the impact of pressure fluctuations on the sealing structure. The replaceable lip mechanism 4 is also included. The main lip 401 is in direct contact with the outer wall of the pipe 1 and undertakes the main sealing function. As it is used, the main lip 401 will wear out. Multiple slide rails 402 on its outer wall can cooperate with multiple slide grooves 404 on the inner wall of the energy storage and release mechanism 5. By pulling the pull ring 403 on the rear side of the top of the main lip 401, the main lip 401 can be easily slid out of the energy storage and release mechanism 5 for individual replacement, which improves the maintenance convenience and service life of the sealing ring. The release chamber 501 of the energy storage and release mechanism 5 stores and releases pressure energy and alleviates pressure fluctuations. The pressure guide ring groove 502 on its inner wall guides the pressure to be evenly distributed, making the energy release more stable and reducing the impact of pressure on the sealing structure.

[0044] The pressure-distributing and pressure-relieving mechanism 3 achieves pressure distribution through multiple piston cylinders 301. Under pressure, the piston cylinders 301 extend and retract. The multiple piston cylinders 301 are fixed to the inner wall of the secondary lip 2 on opposite sides. Adjacent piston cylinders 301 are connected by piston rods 302 to transmit pressure changes. Springs 303 between piston rods 302 provide elastic force to buffer pressure changes. The fitting rings 304 between springs 303 tightly fit the internal structure, transmitting pressure to the secondary lip 2. The elastic skeleton ring 305 on the outer wall of the secondary lip 2 enhances the structural strength and elasticity of the secondary lip 2, assists in sealing, and provides support for the entire sealing structure. The inner wall of the sealing ring 601 of the sealing mechanism 6 is fixed to the elastic skeleton ring. The outer wall 305 provides the main sealing function and also provides a mounting base for other components. The sealing plate 602 at the bottom of the sealing ring 601 further enhances the bottom sealing effect and prevents fluid leakage. When it is necessary to install and remove the sealing ring, the opening and closing mechanism 7 is operated. By pulling the pull rods 702 on the left and right sides of the top of the opening and closing plate 701, the opening and closing plate 701 rotates around the connection between the bottom and the sealing ring 601, thereby opening and closing the sealing ring. After installation, the two positioning pins 7031 at the bottom of the opening and closing plate 701 are inserted into the two pin points 7032 at the top of the sealing ring 601. The opening and closing plate 701 is locked by the locking component 703 to keep the sealing ring in a closed state and ensure sealing performance.

[0045] 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 pipe (1), characterized in that: The outer wall of the pipe (1) is provided with a buffer mechanism (9), the outer wall of the buffer mechanism (9) is provided with a replaceable lip mechanism (4), the replaceable lip mechanism (4) is used to replace the lip piece separately when wear occurs, the outer wall of the replaceable lip mechanism (4) is provided with an energy storage and slow release mechanism (5), the outer wall of the energy storage and slow release mechanism (5) is provided with a pressure distribution and slow release mechanism (3), the pressure distribution and slow release mechanism (3) is used to alleviate the problem of concentrated lip piece load and facilitate pressure distribution, the outer side of the pressure distribution and slow release mechanism (3) is provided with a secondary lip (2), the outer wall of the secondary lip (2) is provided with a sealing mechanism (6), the top of the sealing mechanism (6) is provided with an opening and closing mechanism (7), and the bottom of the sealing mechanism (6) is provided with an installation mechanism (8). The pressure-releasing mechanism (3) includes multiple piston cylinders (301), with the opposite sides of the multiple piston cylinders (301) fixedly connected to the inner wall of the secondary lip (2), and piston rods (302) fixedly connected between adjacent piston cylinders (301), springs (303) fixedly connected between adjacent piston rods (302), and fitting rings (304) fixedly connected between adjacent springs (303). An elastic skeleton ring (305) is fixedly connected to the outer wall of the secondary lip (2).

2. The high-pressure combined sealing ring according to claim 1, characterized in that: The replaceable lip mechanism (4) includes a main lip (401), the inner wall of the main lip (401) is slidably connected to the outer wall of the pipe (1), the outer wall of the main lip (401) is fixedly connected to multiple slide rails (402), the top rear side of the main lip (401) is fixedly connected to a pull ring (403), and the inner wall of the energy storage and slow release mechanism (5) is provided with multiple slide grooves (404).

3. The high-pressure combined sealing ring according to claim 1, characterized in that: The energy storage and slow release mechanism (5) includes a slow release chamber (501), the outer wall of which is fixedly connected to the inner wall of the fitting ring (304), and the inner wall of the slow release chamber (501) is fixedly connected to a pressure guide ring groove (502).

4. A high-pressure combined sealing ring according to claim 1, characterized in that: The sealing mechanism (6) includes a sealing ring (601), the inner wall of which is fixedly connected to the outer wall of the elastic skeleton ring (305), and a sealing sheet (602) is fixedly connected to the bottom of the sealing ring (601).

5. A high-pressure combined sealing ring according to claim 4, characterized in that: The opening and closing mechanism (7) includes an opening and closing piece (701), the bottom of which is fixedly connected to the top of the sealing ring (601), and pull rods (702) are fixedly connected to the left and right sides of the top of the opening and closing piece (701). A locking component (703) is provided at the bottom of the opening and closing piece (701).

6. A high-pressure combined sealing ring according to claim 5, characterized in that: The locking assembly (703) includes two positioning pins (7031), the tops of which are fixedly connected to the bottom left and right sides of the opening and closing piece (701), and the top of the sealing ring (601) has two pin points (7032).

7. A high-pressure combined sealing ring according to claim 1, characterized in that: The mounting mechanism (8) includes two nuts (801), the tops of which are fixedly connected to the front and rear sides of the bottom of the sealing plate (602), and the interior of each nut (801) is threaded with a threaded rod (802).

8. A high-pressure combined sealing ring according to claim 2, characterized in that: The buffer mechanism (9) includes multiple shock-absorbing particles (901), and the opposite sides of the multiple shock-absorbing particles (901) are fixedly connected to the inner wall of the main lip (401). Buffer rings (902) are fixedly connected between adjacent shock-absorbing particles (901).

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