A superimposed ultra-high pressure sealing structure

Abstract

The utility model discloses a kind of superhigh pressure sealing structures of superposition, it is related to superhigh pressure sealing technical field, including fixed part one and coaxially arranged fixed part two in it, annular mounting groove is coaxially opened on the inner arc wall of fixed part one, sealing part one is coaxially installed on the outer arc wall of fixed part two, sealing part one is coaxially equipped with sealing part two near one end of its inside;In the utility model, by sealing ring two of non-metal material quality is arranged in pressure side, sealing ring one of metal material quality is arranged in pressureless side, under high pressure environment, sealing ring two is forced to slide towards sealing ring one and then presses sealing ring one, fill the gap that can appear, ensure the effectiveness of sealing to guarantee that it can withstand high temperature and high pressure environment under reliable sealing, effectively prevent sealing ring one of metal material quality from causing sealing failure due to assembly gap, improve the stability and reliability of hydraulic system under extreme working condition.

Description

Technical Field

[0001] This utility model relates to the field of ultra-high pressure sealing technology, specifically a superimposed ultra-high pressure sealing structure. Background Technology

[0002] In hydraulic systems, ultra-high pressure seals play a crucial role. They are mainly used to prevent hydraulic media (such as hydraulic oil) from leaking from pressurized areas to unpressurized areas under high pressure, ensuring that the hydraulic system can operate stably and reliably and achieve various predetermined working actions and functions.

[0003] The existing method uses a set of non-metallic radial ultra-high pressure sealing components to directly separate the pressurized side and the unpressurized side. The radial ultra-high pressure sealing components directly bear the high pressure of the high pressure chamber. However, non-metallic ultra-high pressure sealing components are easily broken down by ultra-high pressure liquid when subjected to high pressure, and are easily crushed when subjected to high temperature, causing leakage. On the other hand, using all metal materials will not achieve a perfect seal due to assembly gaps.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a superimposed ultra-high pressure sealing structure to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a superimposed ultra-high pressure sealing structure, including a fixing component one and a fixing component two coaxially disposed therein. The inner arc wall of the fixing component one is coaxially provided with an annular mounting groove. The outer arc wall of the fixing component two is coaxially mounted with a sealing component one. The end of the sealing component one near the inside of the fixing component one is coaxially provided with a sealing component two. The outer arc walls of both the sealing component one and the sealing component two abut against the inner wall of the mounting groove. A collar is also coaxially mounted on the outer arc wall of the fixing component two. The sealing component one and the collar are both made of metal, while the sealing component two is made of non-metallic material.

[0007] Furthermore, when the collar is not located between seal one and seal two, seal one and seal two abut against each other, seal one is fixed on the outer arc wall of fixation two, and seal two is rubbed and slidably disposed with the outer wall of fixation two. When the collar is located between seal one and seal two, the collar slides on the outside of fixation two, and seal one abuts against the collar. The inner and outer arc walls of the end of the collar away from seal one are provided with annular limiting grooves, and seal two is provided in both limiting grooves and the two are coaxial.

[0008] Furthermore, the second sealing element includes two opposing sealing rings. The vertical cross-section of the sealing ring along its radial direction is "V" shaped and the opening faces away from the inside of the first fixing element. The inner and outer arc walls of the sealing rings are respectively provided with uniformly distributed sealing teeth. The length direction of the sealing teeth is in the same plane as the radial direction of the sealing ring. The sealing teeth on the side of the two sealing rings that are close to each other are staggered and interlock with each other. The two sealing teeth that are not located on the same sealing ring are fixed with a horizontal sealing plate at the opposite end of the side wall of the two adjacent sealing teeth that are far apart from each other.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. By placing a non-metallic sealing ring 2 on the pressurized side and a metallic sealing ring 1 on the unpressurized side, under high pressure, sealing ring 2 is forced to slide towards sealing ring 1 and press against it. This dynamic sealing method can apply pressure to sealing ring 1 in real time, filling any gaps that may appear and ensuring the effectiveness of the seal. It utilizes both the elastic deformation capability of non-metallic materials and the strength advantage of metallic sealing ring 1 on the unpressurized side. Thus, while ensuring reliable sealing under high temperature and high pressure, it effectively prevents sealing failure of metallic sealing ring 1 due to assembly gaps, improving the stability and reliability of the hydraulic system under extreme conditions.

[0010] 2. By using both direct and indirect connection methods, the assembly method can be flexibly changed according to the specific sealing scenario, thus expanding the application range. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a planar structure in which sealing element one and sealing element two are directly connected in a superimposed ultra-high pressure sealing structure. Figure 2 This is a schematic diagram of a planar structure in which sealing element one and sealing element two are indirectly connected in a superimposed ultra-high pressure sealing structure. Figure 3 This is a schematic diagram of the second sealing element in a superimposed ultra-high pressure sealing structure.

[0012] In the picture: 10. Fastener 1; 101. Mounting slot; 11. Fastener 2; 12. Sealing element 1; 13. Seal component two; 131. Sealing ring; 14. Collar ring. Detailed Implementation

[0013] 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.

[0014] Please see the appendix Figure 1 To be continued Figure 3 This utility model provides a superimposed ultra-high pressure sealing structure, including a fixing component 10 and a fixing component 2 11 coaxially disposed therein. The inner arc wall of the fixing component 10 is coaxially provided with an annular mounting groove 101. The outer arc wall of the fixing component 2 11 is coaxially installed with a sealing component 12. The end of the sealing component 12 near the inside of the fixing component 10 is coaxially provided with a sealing component 2 13. The outer arc walls of both the sealing component 12 and the sealing component 2 13 abut against the inner wall of the mounting groove 101. A collar 14 is also coaxially installed on the outer arc wall of the fixing component 2 11. The sealing component 12 and the collar 14 are both made of metal, while the sealing component 2 13 is made of non-metallic material. When the collar 14 is not located between the first seal 12 and the second seal 13, the first seal 12 and the second seal 13 abut against each other, the first seal 12 is fixed on the outer arc wall of the second fixing member 11, and the second seal 13 is rubbed and slidably disposed with the outer wall of the second fixing member 11. When the collar 14 is located between the first seal 12 and the second seal 13, the collar 14 is slidably sleeved on the outside of the second fixing member 11, and the first seal 12 abuts against the collar 14. The inner and outer arc walls of the end of the collar 14 away from the first seal 12 are provided with annular limiting grooves, and the second seal 13 is provided in both limiting grooves and the two are coaxial.

[0015] It should be noted that, for ease of understanding, this example uses a hydraulic rod. Fixing part 10 is the fixed part of the hydraulic rod, while fixing part 21 is the moving part of the hydraulic rod. The side of sealing part 213 away from sealing part 12, i.e., the inside of fixing part 10, is called the pressurized side, and the side away from sealing part 12 is called the non-pressurized side. When the hydraulic system starts to run, the pressure of the hydraulic medium on the pressurized side gradually increases and may also increase with the operating temperature. In the form of direct connection, such as Figure 1 As shown, at this time, the non-metallic seal 13 located on the pressurized side will slide along the axial direction of the fixed part 11 under the action of pressure. It moves along the outer arc wall of the fixed part 11 towards the unpressurized side. During the movement, it gradually presses against the metallic seal 12 located on the unpressurized side. The seal 12 itself has high strength and wear resistance. The sliding pressure of seal 13 makes it fit tightly against seal 12. By continuously applying pressure, seal 12 and the inner wall of mounting groove 101 are always in close contact, filling any gaps and preventing hydraulic medium from leaking from the pressurized side to the unpressurized side. Here, seal 12 can be in various forms such as Y-shaped or hollow O-shaped, without limitation. In the form of indirect connection, specifically as follows: Figure 2 As shown, the second seal 13 slides and pushes the collar 14 to move, thereby causing the collar 14 to press against the first seal 12, achieving the same tight sealing effect, which is suitable for various sealing scenarios.

[0016] Please see the appendix Figure 1 To be continued Figure 3 The present invention provides a technical solution: the sealing element 2 13 includes two opposing sealing rings 131. The sealing ring 131 has a "V" shaped vertical cross section along its radial direction and is open and facing away from the inside of the fixing element 10. The inner arc wall and outer arc wall of the sealing ring 131 are respectively provided with uniformly distributed sealing teeth. The length direction of the sealing teeth is in the same plane as the radial direction of the sealing ring 131. The sealing teeth of the two sealing rings 131 on the side that are close to each other are staggered and interlock, and the two sealing teeth that are not located on the same sealing ring 131 are fixed with a horizontal sealing plate on the side wall that is far away from each other.

[0017] It should be noted that the sealing ring 131 has a "V" shaped vertical cross section along the radial direction. The sealing teeth on the inner and outer arc walls cooperate with each other. When under pressure, the sealing teeth will more easily rub against the fixing part 11 and the inner wall of the mounting groove 101, that is, it has an "expansion" state, which strengthens the friction and the inclination of the sealing teeth, making the sealing teeth on the two sealing rings 131 more compact. The sealing teeth of the two sealing rings 131 are staggered and interlocked on one side of each other, and the horizontal sealing plate fixed at the opposite end of the two adjacent sealing teeth not located on the same sealing ring 131 further enhances the sealing effect.

[0018] Working principle: When the pressure and temperature of the hydraulic medium on the pressurized side increase, under direct connection, the non-metallic seal 13 on the pressurized side slides along the axial direction of the fixing member 11, moves towards the unpressurized side and presses against the metal seal 12 on the unpressurized side, so that it is in close contact with the inner wall of the mounting groove 101 to prevent leakage. The style of the seal 12 is not limited. In the indirect connection state, the second seal 13 slides and pushes the collar 14, and the collar 14 presses against the first seal 12 to achieve a seal; During the sealing process, the two "V"-shaped sealing rings 131 of the sealing element 2 13 expand under pressure and interlock with each other. The horizontal sealing plate fixed to the side wall of the sealing teeth further enhances the sealing effect and ensures reliable sealing under high temperature and high pressure.

Claims

1. A superimposed ultra-high pressure sealing structure, comprising a first fixing member (10) and a second fixing member (11) coaxially disposed therein, wherein an annular mounting groove (101) is coaxially formed on the inner arc wall of the first fixing member (10), characterized in that: A sealing element 1 (12) is coaxially installed on the outer arc wall of the fixing element 2 (11). A sealing element 2 (13) is coaxially provided at one end of the sealing element 1 (12) near the inside of the fixing element 1 (10). The outer arc walls of the sealing element 1 (12) and the sealing element 2 (13) abut against the inner wall of the mounting groove (101). A collar (14) is also coaxially installed on the outer arc wall of the fixing element 2 (11). The sealing element 1 (12) and the collar (14) are both made of metal, while the sealing element 2 (13) is made of non-metallic material.

2. The superimposed ultra-high pressure sealing structure as described in claim 1, characterized in that: When the collar (14) is not located between the first seal (12) and the second seal (13), the first seal (12) and the second seal (13) abut against each other, the first seal (12) is fixed on the outer arc wall of the second fixing member (11) and the second seal (13) is rubbed and slidably disposed with the outer wall of the second fixing member (11).

3. The superimposed ultra-high pressure sealing structure as described in claim 1, characterized in that: When the collar (14) is located between the first seal (12) and the second seal (13), the collar (14) is slidably sleeved on the outside of the second fixing member (11), and the first seal (12) abuts against the collar (14).

4. The superimposed ultra-high pressure sealing structure as described in claim 3, characterized in that: The collar (14) is provided with annular limiting grooves on the inner and outer arc walls of the end away from the first seal (12), and the two limiting grooves are provided with the second seal (13) and the two are coaxial.

5. The superimposed ultra-high pressure sealing structure as described in claim 1, characterized in that: The second sealing element (13) includes two opposing sealing rings (131). The sealing ring (131) has a "V" shaped vertical cross section along its radial direction and is open and facing away from the inside of the first fixing element (10). The inner and outer arc walls of the sealing ring (131) are respectively provided with uniformly distributed sealing teeth. The length direction of the sealing teeth is in the same plane as the radial direction of the sealing ring (131).

6. The superimposed ultra-high pressure sealing structure as described in claim 5, characterized in that: The sealing teeth of the two sealing rings (131) on the side that are close to each other are staggered and interlock with each other, and the two sealing teeth that are not located on the same sealing ring (131) are fixed with a horizontal sealing plate on the side wall that is far away from each other.

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