High-sealing-performance special flange suitable for space flight and aviation
By setting gaskets and sealing rings between special flanges, combined with convex sealing plates, the problem of poor sealing performance is solved, high sealing performance is achieved, media leakage is prevented, and it is suitable for aerospace.
Patent Information
- Application Number
- CN202422663435.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-01
AI Technical Summary
Existing special flanges have poor sealing performance during use, leading to media leakage and failing to meet the high sealing requirements of aerospace.
A gasket and a sealing ring are installed between the flanges. The gasket is made of flexible material to fill the gap and reduce friction; the sealing ring is made of rubber, which has good elasticity and extensibility, and is positioned in conjunction with a convex sealing plate to enhance the sealing effect.
It effectively prevents media leakage, improves sealing performance, adapts to differences in flange interface shape and size, prevents raw material leakage, and meets the sealing requirements of aerospace.
Smart Images
Figure CN223499011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a special flange, and more specifically, to a high-sealing special flange suitable for aerospace applications. Background Technology
[0002] Special flanges are valve connection fittings, typically used for pipeline connections. They are a specific type of flange with a special shape and design to connect with corresponding valve flanges. Special flanges are generally used in pipeline systems requiring high strength, good sealing performance, corrosion resistance, and other special requirements.
[0003] Existing special flanges are connected and sealed using bolts. Due to the large gap between the flanges, the sealing performance of special flanges is poor, which can easily lead to material leakage and waste of resources.
[0004] Therefore, a new solution is needed to address this problem. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-sealing special flange suitable for aerospace applications. A sealing gasket is placed between the first and second flanges. Because the gasket fills the gap between the flanges and reduces friction and wear, it effectively prevents media leakage. The gasket is typically made of flexible materials such as rubber or polytetrafluoroethylene (PTFE). These materials have excellent compressibility and corrosion resistance, can adapt to differences in the shape and size of the flange interface, and fit tightly to the interface, achieving a sealing effect. A sealing ring, made of rubber, is placed inside the first flange. This sealing ring has good elasticity, excellent extensibility, and self-lubricating properties. Under pressure, the sealing ring fills the microscopic unevenness on the flange interface surface, forming a relatively complete sealing surface and achieving a good sealing effect. A convex sealing plate is inserted into the flange hole and contacts the sealing ring, positioning and increasing its stability, thereby improving the sealing effect and preventing material leakage during flange use.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-sealing special flange suitable for aerospace, comprising a first flange, a sealing gasket disposed above the first flange, a second flange disposed above the first flange, a flange hole being provided at the upper end of both the first flange and the upper end of both the second flange, a sealing ring being fixedly installed in the flange hole of the first flange, a plurality of screw holes being provided on the outer surface of both the first flange and the outer surface of both the second flange, and a convex sealing plate being fixedly installed at the lower end of the second flange.
[0007] The present invention is further configured such that: four through holes are provided on the outer side of the upper end of the sealing gasket, and a through groove is provided on the middle side of the upper end of the sealing gasket.
[0008] The present invention is further configured such that the diameter of the sealing gasket is the same as the diameter of the first flange, and the sealing gasket is located at the midpoint between the opposite surfaces of the first flange and the second flange.
[0009] The present invention is further configured such that the centerlines of the through hole and the screw hole coincide.
[0010] The present invention is further configured such that the diameter of the convex sealing plate is the same as the inner diameter of the sealing ring.
[0011] In summary, this utility model has the following beneficial effects:
[0012] 1. A sealing gasket is placed between the first and second flanges. This gasket fills the gap between the flanges and reduces friction and wear, effectively preventing media leakage. The gasket is typically made of flexible materials such as rubber or PTFE. These materials have good compressibility and corrosion resistance, can adapt to differences in flange shape and size, and fit tightly to the interface, achieving a sealing effect. A sealing ring, made of rubber, is placed inside the first flange. This sealing ring has good elasticity, extensibility, and self-lubricating properties. Under pressure, the sealing ring fills the microscopic unevenness on the flange interface surface, forming a relatively complete sealing surface and achieving a good sealing effect. A convex sealing plate is inserted into the flange hole and contacts the sealing ring, positioning it and increasing its stability, thereby improving the sealing effect and preventing material leakage during flange use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the second flange of this utility model.
[0015] In the diagram: 1. First flange; 2. Sealing gasket; 3. Second flange; 4. Flange hole; 5. Sealing ring; 6. Screw hole; 7. Convex sealing plate; 8. Through hole; 9. Through groove. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.
[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] The present invention will now be described in detail with reference to the accompanying drawings.
[0020] A special flange with high sealing performance suitable for aerospace applications, such as Figures 1 to 2As shown, the flange includes a first flange 1, characterized in that: a sealing gasket 2 is disposed above the first flange 1, and a second flange 3 is disposed above the first flange 1. The diameter of the sealing gasket 2 is the same as the diameter of the first flange 1. The sealing gasket 2 is located in the middle of the opposite faces of the first flange 1 and the second flange 3. A flange hole 4 is opened at the upper end of both the first flange 1 and the upper end of both the second flange 3. A sealing ring 5 is fixedly installed in the flange hole 4 of the first flange 1. Several screw holes 6 are opened on the outer surface of both the first flange 1 and the outer surface of both the second flange 3. A convex sealing plate 7 is fixedly installed at the lower end of the second flange 3. The diameter of the convex sealing plate 7 is the same as the inner diameter of the sealing ring 5. By providing the sealing gasket 2 between the first flange 1 and the second flange 3, the sealing gasket 2 can fill the gap between the flanges and reduce the friction and wear between the two flanges, thereby effectively preventing media leakage. The sealing gasket 2 is usually made of flexible materials, such as rubber, polytetrafluoroethylene, etc. These materials have good compressibility and corrosion resistance, can adapt to the shape and size differences of the flange interface, and fit tightly to the interface to play a sealing role. A sealing ring 5, made of rubber, is installed inside the first flange 1. This sealing ring 5 possesses good elasticity, excellent extensibility, and self-lubricating properties. Under pressure, the sealing ring 5 fills the microscopic unevenness on the flange interface surface, forming a relatively complete sealing surface and achieving a good sealing effect. A convex sealing plate 7 is inserted into the flange hole 4 and contacts the sealing ring 5, positioning it and increasing its stability. This enhances the sealing effect of the sealing ring 5 and prevents material leakage during flange use.
[0021] The upper outer side of the sealing gasket 2 has four through holes 8, the axis of the through holes 8 and the screw hole 6 coincides, and the upper middle side of the sealing gasket 2 has a through groove 9.
[0022] Working Principle: A sealing gasket 2 is placed between the first flange 1 and the second flange 3. Because the sealing gasket 2 fills the gap between the flanges and reduces friction and wear between the two flanges, it effectively prevents media leakage. The sealing gasket 2 is usually made of flexible materials such as rubber or polytetrafluoroethylene (PTFE). These materials have good compressibility and corrosion resistance, can adapt to differences in the shape and size of the flange interface, and fit tightly to the interface, thus achieving a sealing effect. A sealing ring 5 is placed inside the first flange 1. The sealing ring 5 is made of rubber, has good elasticity, excellent extensibility, and self-lubricating properties. Under pressure, the sealing ring 5 can fill the microscopic unevenness on the flange interface surface, forming a relatively complete sealing surface, achieving a good sealing effect. A convex sealing plate 7 is inserted into the flange hole 4 and contacts the sealing ring 5, positioning the sealing ring 5 and increasing its fixation, thereby improving the sealing effect of the sealing ring 5 and preventing material leakage during flange use.
[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A high-sealing special flange suitable for aerospace applications, comprising a first flange (1), characterized in that: A sealing gasket (2) is provided above the first flange (1), and a second flange (3) is provided above the first flange (1). A flange hole (4) is provided at the upper end of the first flange (1) and the upper end of the second flange (3). A sealing ring (5) is fixedly installed in the flange hole (4) of the first flange (1). Several screw holes (6) are provided on the outer surface of the first flange (1) and the outer surface of the second flange (3). A convex sealing plate (7) is fixedly installed at the lower end of the second flange (3).
2. The high-sealing special flange suitable for aerospace applications according to claim 1, characterized in that: The sealing gasket (2) has four through holes (8) on the outer side of its upper end, and a through groove (9) on the middle side of its upper end.
3. The high-sealing special flange suitable for aerospace applications according to claim 1, characterized in that: The diameter of the sealing gasket (2) is the same as that of the first flange (1), and the sealing gasket (2) is located in the middle of the opposite faces of the first flange (1) and the second flange (3).
4. A high-sealing special flange suitable for aerospace applications according to claim 2, characterized in that: The axis of the through hole (8) and the screw hole (6) coincide.
5. A high-sealing special flange suitable for aerospace applications according to claim 1, characterized in that: The diameter of the convex sealing plate (7) is the same as the inner diameter of the sealing ring (5).