Sealing structure for high-pressure-bearing air valve

Abstract

The utility model discloses a sealing structure for a high-pressure-bearing air valve, and belongs to the technical field of sealing structures. A sealing structure for a high-pressure-bearing air valve comprises a first blade and a second blade. The second blade is positioned on the adjacent side of the first blade; the first sealing strip is mounted on the first blade; the second sealing strip is mounted on the first blade; the third sealing strip is mounted on the second blade; the fourth sealing strip is mounted on the second blade; the angle iron is mounted on the air valve; the first blade is provided with two first limiting faces, one first limiting face is used for limiting the first sealing strip, and the other first limiting face is used for limiting the second sealing strip. The second blade comprises two second limiting surfaces, and one second limiting surface is used for limiting the third sealing strip; the other sealing strip is used for limiting the fourth sealing strip; the first sealing strip comprises a first sealing part; the first sealing part abuts against the angle iron. The sealing structure for the high-pressure-bearing air valve has the beneficial effect that the sealing structure for the high-pressure-bearing air valve is provided.

Description

Technical Field

[0001] This application relates to the field of sealing structure technology, and more specifically, to a sealing structure for a high-pressure air valve. Background Technology

[0002] With the rapid rise of urban agglomerations and metropolitan areas, my country's urbanization has entered a new stage of development, and rail transit faces the new mission of building urban agglomerations and metropolitan areas on rails. The continuous extension of urban rail transit lines results in longer sections and faster train speeds, leading to increasingly stronger piston-like airflow. This high-speed piston-like airflow will subject the valves in the piston-like airflow ducts to instantaneous pressures exceeding 4000-6000 Pa. This necessitates that the valves in our ventilation system maintain their sealing performance under high pressure.

[0003] The high-pressure airflow regulating valve in a ventilation system consists of multiple blades. The seal between the blades relies primarily on the structure of elastic stainless steel sheets to fill the gaps between the blades and prevent leakage when the valve is closed. When this stainless steel sheet sealing structure is used in a high-pressure airflow regulating valve, the instantaneous high pressure from the high-speed piston airflow will impact the closed valve blades. Under this condition, the original stainless steel sheet sealing structure will deform at the edges of the valve blades fixing the stainless steel sheets under the instantaneous high pressure. The increased blade gaps cannot be filled by the original stainless steel sheets, and the sealing structure will quickly fail. Simultaneously, under the continuous impact of instantaneous high pressure, the stainless steel sheets themselves and their fixing structure will experience fatigue, compromising the sealing structure's fixation and material strength, and posing a risk of valve damage.

[0004] Therefore, a sealing structure for high-pressure air valves with better sealing performance is provided. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a sealing structure for a high-pressure damper, comprising: a first blade and a second blade; the second blade being located on an adjacent side of the first blade; a first sealing strip mounted on the first blade; a second sealing strip mounted on the first blade; a third sealing strip mounted on the second blade; a fourth sealing strip mounted on the second blade; and an angle iron mounted on the damper; wherein the first blade has two first limiting surfaces, one for limiting the first sealing strip and the other for limiting the second sealing strip; the second blade includes two second limiting surfaces, one for limiting the third sealing strip and the other for limiting the fourth sealing strip; the first sealing strip includes a first sealing portion; the first sealing portion abuts against the angle iron; the second sealing strip includes a second sealing portion; the third sealing strip includes a third sealing portion; and the second sealing portion abuts against the third sealing portion.

[0007] Under high pressure, the first and second blades abut against the third sealing part through the second sealing part. The second and third sealing strips are made of silicone material, which undergoes elastic deformation under pressure, ensuring that the gap between the first and second blades is filled with elastic sealing material, thereby improving the sealing performance between the first and second blades.

[0008] Furthermore, the first sealing strip is located at the upper end of the first blade; the second sealing strip is located at the lower end of the first blade.

[0009] Furthermore, the third sealing strip is located at the upper end of the second blade; the fourth sealing strip is located at the lower end of the second blade.

[0010] Furthermore, the second sealing strip has the same structure as the fourth sealing strip.

[0011] Furthermore, the first sealing part has an arc-shaped structure.

[0012] Furthermore, the second sealing part is symmetrically arranged with respect to the first sealing part.

[0013] Furthermore, the third sealing part has a square strip structure.

[0014] Furthermore, the first sealing strip, the second sealing strip, the third sealing strip, and the fourth sealing strip are all provided with a first protrusion; the first protrusion of the first sealing strip abuts against one of the first limiting surfaces; the first protrusion of the second sealing strip abuts against the other first limiting surface; the first protrusion of the third sealing strip abuts against one of the second limiting surfaces; and the first protrusion of the fourth sealing strip abuts against the other second limiting surface.

[0015] Furthermore, the first blade and the second blade have the same structure.

[0016] The beneficial effect of this application is that it provides a sealing structure for a high-pressure damper with better sealing performance. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram:

[0020] Figure 1 This is the front view of the damper;

[0021] Figure 2 This is a top view of the air valve;

[0022] Figure 3 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the first blade and the second blade;

[0023] Figure 4 yes Figure 3 The enlarged view of part A mainly shows the structure of angle iron D and the first sealing strip;

[0024] Figure 5 yes Figure 3 The enlarged view of part B mainly shows the structure of the second and third sealing strips;

[0025] Figure 6 yes Figure 3 The enlarged view of section C mainly shows the structure of the fourth sealing strip;

[0026] Figure 7 This is a structural schematic diagram as part of an embodiment, mainly showing the structure of the first sheet and the second sheet;

[0027] Figure 8 yes Figure 7 The enlarged view of part D mainly shows the structure of the protrusion and the first limiting surface;

[0028] Figure 9 This is a structural schematic diagram as part of an embodiment, mainly showing the first sealing part;

[0029] Figure 10 This is a structural schematic diagram as part of an embodiment, mainly showing the second sealing part;

[0030] Figure 11This is a structural schematic diagram as part of an embodiment, mainly showing the third sealing part.

[0031] Figure label:

[0032] 101. First blade; 101a. First plate; 101b. Second plate; 101c. Gasket; 101d. Screw; 101e. Nut; 101f. First limiting surface; 102. Second blade; 103. First sealing strip; 103a. First protrusion; 103b. First sealing part; 104. Second sealing strip; 104a. Second sealing part; 105. Third sealing strip; 105a. Third sealing part; 106. Fourth sealing strip; 107. Angle iron; 108. Air valve frame. Detailed Implementation

[0033] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0034] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0035] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0036] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0037] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Reference Figure 1-11A sealing structure for a high-pressure damper includes: a first blade 101, a second blade 102, a first sealing strip 103, a second sealing strip 104, a third sealing strip 105, a fourth sealing strip 106, and an angle iron 107. The second blade 102 is located on the adjacent side of the first blade 101. The first blade 101 includes a first piece 101a, a second piece 101b, a gasket 101c, a screw 101d, and a nut 101e. The first piece 101a is located at one end of the gasket 101c, and the second piece 101b is located at the other end of the gasket 101c.

[0039] The first plate 101a, the second plate 101b, and the gasket 101c are all provided with through holes. The threaded end of the screw 101d passes through the through holes of the second plate 101b, the gasket 101c, and the first plate 101a in sequence, and then the first plate 101a, the gasket 101c, the second plate 101b, the first sealing strip 103, and the second sealing strip 104 are fixed by the nut 101e. The first blade 101 and the second blade 102 have the same structure. The installation method of the third sealing strip 105 and the fourth sealing strip 106 is the same as that of the first sealing strip 103 and the second sealing strip 104. The angle iron 107 is fixedly connected to the air valve frame 108.

[0040] The first blade 101 has two first limiting surfaces 101f, one for limiting the first sealing strip 103 and the other for limiting the second sealing strip 104. The second blade 102 includes two second limiting surfaces, one for limiting the third sealing strip 105 and the other for limiting the fourth sealing strip 106. Specifically, the first sealing strip 103, the second sealing strip 104, the third sealing strip 105, and the fourth sealing strip 106 each have a first protrusion 103a. The first protrusion 103a of the first sealing strip 103 abuts against one of the first limiting surfaces 101f, the first protrusion 103a of the second sealing strip 104 abuts against the other first limiting surface 101f, the first protrusion 103a of the third sealing strip 105 abuts against one of the second limiting surfaces, and the first protrusion 103a of the fourth sealing strip 106 abuts against the other second limiting surface.

[0041] The first sealing strip 103 includes a first sealing portion 103b, which abuts against the angle iron 107. The first sealing portion 103b has an arc-shaped structure. The second sealing strip 104 includes a second sealing portion 104a, which has the same structure as the first sealing portion 103b and is symmetrically arranged. The third sealing strip 105 includes a third sealing portion 105a, which has a square strip structure. The second sealing portion 104a abuts against the third sealing portion 105a. The first sealing strip 103 is located at the upper end of the first blade 101, and the second sealing strip 104 is located at the lower end of the first blade 101. The third sealing strip 105 is located at the upper end of the second blade 102, and the fourth sealing strip 106 is located at the lower end of the second blade 102. The second sealing strip 104 and the fourth sealing strip 106 have the same structure.

[0042] Working process: The first sealing strip 103, the second sealing strip 104, the third sealing strip 105, and the fourth sealing strip 106 are all made of high-temperature resistant and highly elastic silicone material. Silicone material possesses properties such as high temperature resistance, aging resistance, elasticity, strength, and hardness. When the first blade 101 and the second blade 102 are closed, the first sealing part 103b of the first sealing strip 103 abuts against the angle iron 107, filling the gap between the first sealing part 103b and the angle iron 107 with the elastic first sealing part 103b. The second sealing part 104a of the second sealing strip 104 abuts against the third sealing part 105a of the third sealing strip 105, causing the second sealing strip 104 to undergo elastic deformation under pressure (see reference). Figure 6 The gap between the first blade 101 and the second blade 102 is filled with elastic sealing material (i.e., the second sealing part 104a), thereby ensuring the sealing between the first blade 101 and the second blade 102, and the sealing shape of the first sealing part 103b of the first sealing strip 103 and the angle iron 107.

[0043] Unlike traditional stainless steel sheets, which deform at the edges of valve blades under instantaneous high pressure, resulting in poor sealing performance under continuous high-pressure impact, this design addresses this issue. The first blade 101 has two first limiting surfaces 101f to limit the protrusions of the first sealing strip 103 and the second sealing strip 104. Similarly, the second blade 102, including two second limiting surfaces, limits the protrusions of the third sealing strip 105 and the first protrusion 103a of the fourth sealing strip 106. This ensures that the second and third sealing strips 104 and 105 do not shift under repeated instantaneous high-pressure impacts, thus preventing a reduction in sealing performance.

[0044] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A sealing structure for a high-pressure damper, comprising: First blade (101) and second blade (102); The second blade (102) is located on the adjacent side of the first blade (101); Its features are: The sealing structure for the high-pressure air valve also includes: The first sealing strip (103) is installed on the first blade (101); The second sealing strip (104) is installed on the first blade (101); The third sealing strip (105) is installed on the second blade (102); The fourth sealing strip (106) is installed on the second blade (102); Angle iron (107), installed on the air valve; The first blade (101) has two first limiting surfaces (101f), one for limiting the first sealing strip (103) and the other for limiting the second sealing strip (104); the second blade (102) includes two second limiting surfaces (102a), one for limiting the third sealing strip (105) and the other for limiting the fourth sealing strip (106); the first sealing strip (103) includes a first sealing part (103b); the first sealing part (103b) abuts against the angle iron (107); the second sealing strip (104) includes a second sealing part (104a); the third sealing strip (105) includes a third sealing part (105a); the second sealing part (104a) abuts against the third sealing part (105a).

2. The sealing structure for a high-pressure damper according to claim 1, characterized in that: The first sealing strip (103) is located at the upper end of the first blade (101); The second sealing strip (104) is located at the lower end of the first blade (101).

3. The sealing structure for a high-pressure damper according to claim 2, characterized in that: The third sealing strip (105) is located at the upper end of the second blade (102); The fourth sealing strip (106) is located at the lower end of the second blade (102).

4. The sealing structure for a high-pressure damper according to claim 3, characterized in that: The second sealing strip (104) has the same structure as the fourth sealing strip (106).

5. The sealing structure for a high-pressure damper according to claim 4, characterized in that: The first sealing part (103b) has an arc-shaped structure.

6. The sealing structure for a high-pressure damper according to claim 5, characterized in that: The second sealing part (104a) is symmetrically arranged with the first sealing part (103b).

7. The sealing structure for a high-pressure damper according to claim 6, characterized in that: The third sealing part (105a) has a square strip structure.

8. The sealing structure for a high-pressure damper according to claim 1, characterized in that: The first sealing strip (103), the second sealing strip (104), the third sealing strip (105) and the fourth sealing strip (106) are all provided with a first protrusion (103a); The first protrusion (103a) of the first sealing strip (103) abuts against one of the first limiting surfaces (101f); The first protrusion (103a) of the second sealing strip (104) abuts against another first limiting surface (101f); The first protrusion (103a) of the third sealing strip (105) abuts against one of the second limiting surfaces (102a); The first protrusion (103a) of the fourth sealing strip (106) abuts against another second limiting surface (102a).

9. The sealing structure for a high-pressure damper according to claim 8, characterized in that: The first blade (101) and the second blade (102) have the same structure.

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