High-pressure combined sealing ring
Through multi-layer structural design and component optimization, the sealing performance problem of high-pressure sealing ring in extreme environments is solved, and the stability and durability in high-pressure environments are achieved, ensuring that the sealing ring maintains a good sealing effect in complex environments.
Patent Information
- Application Number
- CN202421922589.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing high-pressure sealing rings are prone to failure in extreme environments, have insufficient pressure resistance, poor thermal stability, uneven distribution of lubricant oil, and insufficient thermal management, resulting in a degradation of sealing performance.
It adopts a multi-layer structural design, including sealing outer ring, thermal insulation layer, main seal and compensation ring. Combining strong and durable materials and precision technology, components such as buffer pads, lubricating grooves, air guide slots, arc-shaped resistance sheets and embedded reeds are designed to achieve dynamic response and heat management.
It significantly improves sealing performance, enhances structural stability and impact resistance, ensures that the sealing ring maintains excellent sealing effect and long-term reliability in high-pressure environments, and avoids seal failure caused by insufficient lubrication or heat accumulation.
Smart Images
Figure CN223136945U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing ring devices, in particular to a high-pressure combined sealing ring. Background Technique
[0002] With the rapid development of industrial technology, the application scope of high-pressure combined sealing rings is gradually expanding. Especially in multiple fields such as petrochemical industry, deep-sea exploration, aerospace, and high-speed rotating machinery, they are key components indispensable for ensuring the safe operation of equipment and improving work efficiency. However, these application environments are often accompanied by extreme working pressures, drastic temperature changes, and complex chemical medium corrosion, which pose more stringent requirements for the materials and designs of sealing rings. Traditional sealing rings mostly adopt single materials and simple structures, such as being composed of pure rubber or metal materials. These sealing rings may work well under normal pressure or temperature, but in high-pressure and high-temperature environments, their physical and chemical stabilities are often difficult to meet the requirements of the industry. For example, some materials will soften at high temperatures, resulting in a decline in the sealing effect, and may fail due to embrittlement of the materials in low-temperature environments. In addition, working in the pressure change range for a long time, especially in pulsed pressure or vibration environments, will cause material fatigue and ultimately lead to sealing failure. With the development of modern materials science and mechanical engineering technology, high-pressure combined sealing rings have emerged, but they are still in continuous exploration and development.
[0003] Existing high-pressure sealing technologies generally face problems such as insufficient pressure resistance, poor thermal stability, and the risk of sealing failure caused by uneven lubricating oil distribution. Especially in a working environment with continuous high pressure and large temperature differences, the compressive strength and temperature resistance performance of traditional sealing rings cannot meet the requirements of long-term stable operation. Similarly, the lubrication management system inside the sealing ring often suffers from insufficient or excessive lubrication due to poor design or inappropriate materials, resulting in a reduction in sealing performance and even causing wear or failure of the system. In addition, the sealing rings working in high-pressure environments also require an effective thermal management system to handle the internally generated heat. Traditional sealing ring designs often have deficiencies in thermal management and cannot effectively conduct out the internal heat, resulting in a decline in sealing performance. These problems make it necessary to develop high-pressure combined sealing ring products with excellent key performance factors such as high pressure resistance, temperature resistance, and lubrication when designing sealing rings suitable for high-pressure environments. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the utility model provides a high-pressure combined sealing ring. In terms of design, a unique multi-layer structure is adopted, which ingeniously combines durable materials with precise processes, so that the sealing performance is significantly improved in high-pressure environments.
[0006] (2) Technical Solutions
[0007] To achieve the above object, the present utility model is realized by the following technical solutions: A high-pressure combined sealing ring, comprising a sealing outer ring, a heat insulation layer, a main sealing body and a compensation ring. An alloy outer shell is embedded in a circle on the outer wall of the sealing outer ring. A heat insulation layer is arranged in a circle on the inner wall of the sealing outer ring. A first buffer pad is arranged at the top left end of the inner wall of the heat insulation layer. A second buffer pad is arranged at the top right end of the inner wall of the heat insulation layer. A third buffer pad is arranged at the bottom left end of the inner wall of the heat insulation layer. A fourth buffer pad is arranged at the bottom right end of the inner wall of the heat insulation layer. The main sealing body is fixedly connected to the inner walls of the first buffer pad, the second buffer pad, the third buffer pad and the fourth buffer pad.
[0008] Preferably, a compensation ring is embedded in the main sealing body. A lining layer is fixedly connected to the middle end of the main sealing body. A setting hole is provided in the middle end of the memory layer.
[0009] Preferably, nine lubricating grooves are arranged in a circle on the inner wall of the lining layer and are evenly distributed at equal intervals. Air guide hole grooves are arranged on both sides of the lubricating grooves and are evenly distributed at equal intervals.
[0010] Preferably, four arc-shaped abutting pieces are arranged in a circle on the inner wall of the compensation ring and are evenly distributed at equal intervals. Inner embedded spring pieces are arranged on the inner walls of the abutting pieces.
[0011] Preferably, six compensation pieces are arranged in a circle on the outer wall of the compensation ring and are evenly distributed at equal intervals. Support pieces are fixedly connected to the outer walls of the compensation pieces.
[0012] Preferably, a first heat conducting piece is arranged at the top end of the inner wall of the main sealing body. A second heat conducting piece is arranged at the bottom end of the inner wall of the main sealing body. A third heat conducting piece is arranged at the left end of the inner wall of the main sealing body. A fourth heat conducting piece is arranged at the right end of the inner wall of the main sealing body. The bottom of the first heat conducting piece, the top of the second heat conducting piece, the right side of the third heat conducting piece and the left side of the fourth heat conducting piece are all in contact with the support pieces.
[0013] (III) Beneficial effects
[0014] The present utility model provides a high-pressure combined sealing ring. It has the following beneficial effects:
[0015] (1) This type of high-pressure combined seal ring adopts a unique multi-layer structure in its design, skillfully integrating durable materials with precise processes, significantly enhancing the sealing performance in high-pressure environments. Firstly, the application of the alloy outer shell and heat insulation layer in the sealing outer ring of the high-pressure combined seal ring not only strengthens the structural stability and impact resistance but also protects the internal components from extreme temperatures, thus ensuring that the seal ring can maintain optimal performance in a changing working environment. Additionally, multiple buffer pads distributed on the inner wall of the heat insulation layer further enhance the resistance of the seal ring to mechanical vibrations and pressure shocks, improving the reliability and durability of the product.
[0016] (2) In this type of high-pressure combined seal ring, the design of the inner lining layer, lubrication grooves, and air vent grooves of the main seal body fully considers the uniform distribution of lubricating oil and the reasonable release of gas pressure during long-term operation, avoiding the aging or damage of the sealing layer caused by dried grease or excessive internal pressure. The arc-shaped contact pieces and embedded spring pieces that interact between the compensation ring and the main seal body not only provide active compensation adjustment to adapt to the minor deformation of the seal body under high pressure but also enable the high-pressure combined seal ring to maintain a firm sealing effect when subjected to sudden pressure changes. The combination of the compensation piece and the support piece further improves the performance of the seal ring. These features jointly ensure the high performance and long-term stable operation of the seal ring. Description of the Drawings
[0017] Figure 1 It is an external view of the overall structure of the present utility model;
[0018] Figure 2 It is a schematic diagram of the external multi-layer dispersion of the present utility model;
[0019] Figure 3 It is a schematic diagram of the distribution of the internal components of the main seal body of the present utility model;
[0020] Figure 4 It is a schematic diagram of the diffusion of the internal and external components of the compensation ring of the present utility model.
[0021] In the figures: 1. Sealing outer ring; 2. Alloy outer shell; 3. Heat insulation layer; 4. Buffer pad 1; 5. Buffer pad 2; 6. Buffer pad 3; 7. Buffer pad 4; 8. Main seal body; 9. Setting hole; 10. Compensation ring; 11. Inner lining layer; 12. Lubrication groove; 13. Air vent groove; 14. Contact piece; 15. Embedded spring piece; 16. Compensation piece; 17. Support piece; 18. Heat conduction piece 1; 19. Heat conduction piece 2; 20. Heat conduction piece 3; 21. Heat conduction piece 4. Detailed Implementation Manner
[0022] 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.
[0023] See also Figures 1-4 The embodiment of the utility model provides a technical solution: a high-pressure combined sealing ring, including a sealing outer ring 1, a heat-insulating layer 3, a main sealing body 8 and a compensation ring 10, an alloy shell 2 is embedded in the outer wall of the sealing outer ring 1, and the high-pressure combined sealing ring is an advanced technical product with a multi-layer structure design. When the sealing ring works in a high-pressure environment, the sealing outer ring 1 and the alloy shell 2 are matched to provide a hard protective layer to prevent the external pressure from directly acting on the internal structure of the sealing ring. The inner wall of the sealing outer ring 1 is provided with a heat-insulating layer 3, and then the heat-insulating layer 3 plays a role in isolating extreme temperatures to ensure that the internal materials are kept in a suitable temperature range. Working inside the enclosure, a buffer pad 1 4 is arranged on the top of the left end of the inner wall of the thermal insulation layer 3, a buffer pad 2 5 is arranged on the top of the right end of the inner wall of the thermal insulation layer 3, a buffer pad 3 6 is arranged on the bottom of the left end of the inner wall of the thermal insulation layer 3, and a buffer pad 4 7 is arranged on the bottom of the left end of the inner wall of the thermal insulation layer 3. The inner walls of the buffer pad 1 4, the inner walls of the buffer pad 2 5, the inner walls of the buffer pad 3 6, and the inner walls of the buffer pad 4 7 are all fixedly connected with a main sealing body 8. The buffer pad 1 4, buffer pad 2 5, buffer pad 3 6 and buffer pad 4 7 arranged on the inner wall of the thermal insulation layer 3 jointly play a role in absorbing and alleviating the impact force generated by the high pressure, thereby reducing the impact on the main sealing body 8.
[0024] A compensation ring 10 is embedded in the main sealing body 8, and an inner lining layer 11 is fixedly connected to the middle end of the main sealing body 8. A setting hole 9 is provided at the middle end of the memory layer. The compensation ring 10 structure cooperates with the many arc-shaped contact pieces 14 and embedded spring pieces 15 embedded in the main sealing body 8 to form a dynamic response mechanism. In a high-pressure environment, the inner lining layer 11 can achieve fine-tuning of the structure by setting grooves and holes to adapt to changes in internal pressure and maintain the sealing effect. The hole 9 is set for connecting and wrapping the surface of the installation position that needs to be sealed.
[0025] Nine lubrication grooves 12 are arranged around the inner wall of the inner lining layer 11 and are distributed at equal intervals. Air guide grooves 13 are arranged on both sides of the lubrication grooves 12 and are distributed at equal intervals. The existence of the nine lubrication grooves 12 built into the inner lining layer 11 and the air guide grooves 13 on both sides ensures that the lubricating oil and gas pressure can be evenly distributed, avoiding the problem of insufficient lubrication or excessive internal pressure of the sealing ring during long-term operation.
[0026] Four arc-shaped contact pieces 14 are arranged equidistantly around the inner wall of the compensation ring 10, and embedded spring pieces 15 are arranged on the inner walls of the contact pieces 14. The structure of the compensation ring 10 cooperates with the numerous arc-shaped contact pieces 14 and embedded spring pieces 15 embedded in the main seal body 8 to form a dynamic response mechanism, which can automatically adjust its shape under high pressure, enabling the sealing ring to adapt to various possible deformations caused by high pressure, thereby maintaining good sealing performance.
[0027] Six compensation pieces 16 are arranged equidistantly around the outer wall of the compensation ring 10, and support pieces 17 are fixedly connected to the outer walls of the compensation pieces 16. The design of the support pieces 17 and the compensation pieces 16 outside the compensation ring 10 provides additional support for the structure of the sealing ring, enabling it to maintain the necessary shape stability under high pressure. These designs work together to ensure the stable operation and long-term durability of the sealing ring in a high-pressure environment.
[0028] A first heat-conducting piece 18 is provided at the top end of the inner wall of the main seal body 8, a second heat-conducting piece 19 is provided at the bottom end of the inner wall of the main seal body 8, a third heat-conducting piece 20 is provided at the left end of the inner wall of the main seal body 8, and a fourth heat-conducting piece 21 is provided at the right end of the inner wall of the main seal body 8. The bottom of the first heat-conducting piece 18, the top of the second heat-conducting piece 19, the right side of the third heat-conducting piece 20, and the left side of the fourth heat-conducting piece 21 are all in contact with the support piece 17. The provision of the heat-conducting pieces enhances the heat transfer from the inside to the outside of the sealing ring, enabling the sealing ring to minimize structural damage caused by temperature rise during high-pressure operation.
[0029] Working principle: The high-pressure combined sealing ring is an advanced technology product with a multi-layer structural design. When the sealing ring works in a high-pressure environment, the sealing outer ring 1 and the alloy shell 2 are matched to provide a hard protective layer to prevent external pressure from directly acting on the internal structure of the sealing ring. Then the thermal insulation layer 3 plays a role in isolating extreme temperatures to ensure that the internal materials work within a suitable temperature range. At the same time, the buffer pad 1 4, buffer pad 2 5, buffer pad 3 6 and buffer pad 4 7 arranged on its inner wall work together to absorb and alleviate the impact force caused by high pressure, reducing the impact on the main sealing body 8. In a high-pressure environment, the inner lining layer 11 achieves fine-tuning of the structure by setting grooves and holes to adapt to changes in internal pressure. , maintain the sealing effect, the nine lubrication grooves 12 built into the inner lining 11 and the air guide grooves 13 on both sides ensure that the lubricating oil and gas pressure can be evenly distributed, avoiding the problem of insufficient lubrication or excessive internal pressure of the sealing ring during long-term operation. The compensation ring 10 structure cooperates with the many arc-shaped contact pieces 14 and embedded spring pieces 15 built into the main sealing body 8 to form a dynamic response mechanism, which can automatically adjust the shape under high pressure, so that the sealing ring can adapt to various possible deformations caused by high pressure, thereby maintaining good sealing. The setting of the heat conductive sheet enhances the heat transfer from the inside to the outside of the sealing ring, so that the sealing ring can minimize the structural damage caused by temperature rise when working under high pressure. In addition, the support sheet 17 and the compensation sheet 16 outside the compensation ring 10 provide additional support for the sealing ring structure, so that it can maintain the necessary shape stability under high pressure. These designs work together to ensure the stable operation and long-term durability of the sealing ring under high pressure environment.
[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A high-pressure combined sealing ring, comprising a sealing outer ring (1), a heat insulation layer (3), a main sealing body (8) and a compensating ring (10), characterized in that: An alloy shell (2) is embedded in a circle around the outer wall of the sealing outer ring (1). A heat insulation layer (3) is provided in a circle on the inner wall of the sealing outer ring (1). A first buffer pad (4) is provided at the top left end of the inner wall of the heat insulation layer (3). A second buffer pad (5) is provided at the top right end of the inner wall of the heat insulation layer (3). A third buffer pad (6) is provided at the bottom left end of the inner wall of the heat insulation layer (3). A fourth buffer pad (7) is provided at the bottom left end of the inner wall of the heat insulation layer (3). A main seal body (8) is fixedly connected to the inner walls of the first buffer pad (4), the second buffer pad (5), the third buffer pad (6), and the fourth buffer pad (7).
2. The high-pressure combined sealing ring according to claim 1, wherein: A compensation ring (10) is embedded inside the main seal body (8). A lining layer (11) is fixedly connected to the middle end of the main seal body (8). A setting hole (9) is provided in the middle of the memory layer.
3. The high-pressure combined sealing ring according to claim 2, characterized in that: Nine lubricating grooves (12) are provided in a circle on the inner wall of the lining layer (11) and are evenly distributed at equal intervals. Air guide hole grooves (13) are provided on both sides of the lubricating grooves (12) and are evenly distributed at equal intervals.
4. A high-pressure combined sealing ring according to claim 1, characterized in that: Four arc-shaped abutting pieces (14) are provided in a circle on the inner wall of the compensation ring (10) and are evenly distributed at equal intervals. Embedded spring pieces (15) are provided on the inner walls of the abutting pieces (14).
5. A high-pressure combined sealing ring according to claim 1, characterized in that: Six compensation pieces (16) are provided in a circle on the outer wall of the compensation ring (10) and are evenly distributed at equal intervals. Support pieces (17) are fixedly connected to the outer walls of the compensation pieces (16).
6. A high-pressure combined sealing ring according to claim 1, characterized in that: A first heat conducting piece (18) is provided at the top end of the inner wall of the main seal body (8). A second heat conducting piece (19) is provided at the bottom end of the inner wall of the main seal body (8). A third heat conducting piece (20) is provided at the left end of the inner wall of the main seal body (8). A fourth heat conducting piece (21) is provided at the right end of the inner wall of the main seal body (8). The bottom of the first heat conducting piece (18), the top of the second heat conducting piece (19), the right side of the third heat conducting piece (20), and the left side of the fourth heat conducting piece (21) are all in contact with and support the support piece (17).