Compensation type sealing ring for aviation

Abstract

The utility model relates to an aviation compensation type sealing ring which comprises a middle base frame, base bomb units are evenly distributed on the inner side and the outer side of the middle base frame, X bomb frames are arranged in the base bomb units, buffer bomb cavities are formed in the X bomb frames, cushion supporting pieces are arranged outside the buffer bomb cavities, bomb top caps are arranged on the outer sides of the X bomb frames, and the cushion supporting pieces are arranged on the outer sides of the X bomb frames. A convex tower is arranged on the inner side of the bullet top cap, a unit cavity separation sleeve is arranged outside the base bullet unit, and wrapping and sealing rings are arranged outside the middle base frame, the base bullet unit, the bullet top cap and the unit cavity separation sleeve. The middle base frame is arranged in the middle of the sealing ring for supporting, the base bullet units are evenly distributed inside and outside the middle base frame, the X bullet frames inside the base bullet units can enable wrapping sealing rings on the inner side and the outer side of the sealing ring to be jacked outwards, the tightening force at the sealing position is good, and the sealing effect can be enhanced through the sealing elastic compensation force; and the sealing of the sealing ring can still be effective for a long time under high-temperature and high-pressure working conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation engines, and particularly relates to a compensating sealing ring for aviation. Background Art

[0002] Sealing rings are seals that prevent fluid leakage. Sealing rings in aircraft engines must maintain sealing performance in high-temperature and high-pressure environments. Currently, rubber sealing rings are widely used. Existing rubber sealing rings are typically donut-shaped, which can easily fail in high-temperature and high-pressure environments. Replacement is complex, and rubber sealing rings generally have poor durability.

[0003] The prior art discloses a device and method for detecting a rubber sealing ring, with publication number CN118776782A. The inner ring of the rubber sealing ring disclosed in the background technology of the specification is surrounded by a sling spring for tightening the rubber lip to form a seal of the inner ring. When the spring is wrapped in a surrounding manner under high temperature conditions, the elasticity of the thin steel wire spring is very likely to anneal and fail, and the tightening force formed by the spring winding and bundling is relatively small. It is difficult for the inner ring of the sealing ring to form a good and long-term seal under high temperature and high pressure conditions; and the outer ring is sealed only by a traditional style of interference fit between a metal frame and a rubber waist. The metal frame cannot provide an elastic outward expansion-type pressing force to the rubber sealed on the outer ring, and the rubber sealed on the outer ring of the sealing ring cannot provide a compensatory pressing force to achieve effective sealing. Utility Model Content

[0004] The present invention provides a compensating sealing ring for aviation use to solve the technical problems of the existing rubber sealing rings mentioned above, such as poor sealing performance on both radial inner and outer sides, easy failure under high temperature and high pressure conditions, and inability to effectively elastically compensate for the press seal.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a compensating sealing ring for aviation, characterized by comprising:

[0006] A middle base frame, wherein convex ribs are evenly distributed on both inner and outer sides of the middle base frame;

[0007] The base elastic units are evenly distributed on both sides of the inner and outer sides of the middle base frame, and the convex ribs are placed at the inner center of the base elastic units;

[0008] An X-bomb rack is placed in the base bomb unit. A buffer bullet cavity is provided in the X-bomb rack. A spacer is provided outside the buffer bullet cavity. The spacer is aligned with the rib in an up-and-down manner.

[0009] A bomb top cap is placed on the outside of the X-bomb rack, and a convex tower is provided on the inside of the bomb top cap;

[0010] A unit spacer sleeve is placed between two adjacent base bomb units for separation;

[0011] The sealing ring is placed on the outside of the middle base frame, the base elastic unit, the elastic top cap and the unit compartment sleeve for adhesive connection, and radial shrinking grooves and longitudinal glue storage grooves are evenly distributed on the surface of the sealing ring.

[0012] Preferably, the middle base frame is fixedly connected to the convex rib, the outer end of the convex rib is provided with a smooth surface, and the center of the smooth surface of the convex rib and the center of the correspondingly distributed pad of the X-bomb frame and the convex tower of the bomb top cap are all concentrically aligned.

[0013] Preferably, when the bullet top cap is compressed by the X-bomb frame, the distances between the smooth surface of the rib and the convex tower and the pads on the upper and lower sides of the X-bomb frame are reduced.

[0014] Preferably, when the smooth surface of the convex rib and the convex tower both come into contact with the pads on the upper and lower sides of the X-bomb rack, the buffer bullet cavity of the X-bomb rack is compressed and shrunk.

[0015] Preferably, the buffer elastic cavity is a sealed cavity, and when the buffer elastic cavity shrinks, the vibration generated when the pad and the convex rib or the convex tower come into contact will be reduced.

[0016] Preferably, the cross-sectional shape of the convex rib is the same as that of the convex tower.

[0017] Preferably, the middle base frame is a circular annular ring, and the base bullet units are provided on the inner hole wall and the arc surface of the outer circle of the middle base frame. There are multiple base bullet units, and each base bullet unit is provided with an X-bomb rack, a bullet top cap and a unit compartment sleeve.

[0018] Preferably, the number of the basic elastic units distributed on the inner and outer sides of the middle base frame is equal, and the basic elastic units distributed on the inner and outer sides of the middle base frame are evenly aligned and distributed.

[0019] Preferably, the number of the radial shrinking rubber grooves on the wrapping ring is equal to the number of the basic elastic units, and the radial shrinking rubber grooves and the longitudinal rubber storage grooves are distributed in a cross-shaped pattern.

[0020] The beneficial effects of the present invention are as follows: the present invention adopts a middle base frame placed in the middle of the sealing ring for support, and a plurality of base elastic units are evenly distributed inside and outside the middle base frame. The X-elastic frame inside the base elastic unit can make the inner and outer wrapping rings of the sealing ring be pushed outward, ensuring that not only the inner hole part of the sealing ring is sealed with compensating pressure, but also the outer ring of the sealing ring can have compensating pressure to enhance the sealing effect. The tightening force at the sealing part is better, ensuring that the sealing of the sealing ring can still be effective for a long time under high temperature and high pressure working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main appearance of the utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 3 This utility model Figure 1 A schematic diagram of a partial enlargement of point A;

[0024] Figure 4 This utility model Figure 3 EE-direction cross-sectional structural diagram;

[0025] Figure 5 This utility model Figure 2 A schematic diagram of a partial enlargement of point B;

[0026] Figure 6 This utility model Figure 5 Schematic diagram of the cross-sectional structure;

[0027] Figure 7 This utility model Figure 6 FF-direction cross-sectional structural diagram;

[0028] Figure 8 This utility model Figure 5 A schematic diagram of a partially enlarged structure;

[0029] Figure 9 This utility model Figure 8 Left section diagram of ;

[0030] In the figure: 1-middle base frame, 11-convex rib, 111-smooth surface, 2-base bullet unit, 3-X bullet frame, 31-buffer bullet cavity, 32-spacer, 4-bullet top cap, 41-convex tower, 5-unit cavity sleeve, 6-wrapping ring, 61-radial shrinking groove, 62-longitudinal glue storage groove. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0032] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] Below, the utility model will be further described in conjunction with the accompanying drawings:

[0037] Reference Figures 1 to 9 As shown, one aspect of the present invention provides a compensating sealing ring for aviation, comprising: a middle base frame 1, a base bomb unit 2, an X-bomb frame 3, a bomb top cap 4, a unit compartment sleeve 5 and a wrapping sealing ring 6.

[0038] Hereinafter, some structures and principles of the above components according to the compensating sealing ring will be described in detail.

[0039] As an example, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, the middle base frame 1 is a circular ring. The middle base frame 1 can be made of heat-resistant steel or nickel-based high-temperature alloy. The middle base frame 1 has high structural strength, good temperature resistance and is not easy to deform. The middle base frame 1 can be evenly exposed in the outer sealing ring 6, which is convenient for users to visually identify this sealing ring. The metal middle base frame 1 is different from the rubber sealing ring 6. The metal middle base frame 1 can remind users to treat it differently from the full rubber ring during installation and use to prevent pinching and deformation. The middle base frame 1 has ribs 11 evenly distributed on both sides of the inside and outside. The middle base frame 1 and the ribs 11 are connected by welding or integral manufacturing. The cross-sectional shape of the ribs 11 and the convex tower 41 can be the same. The number of the ribs 11 and the convex tower 41 is equal and evenly distributed at the upper and lower ends of the base elastic unit 2. The outer end surfaces of the rib 11 and the convex tower 41 are both smooth surfaces 111 to prevent the pad 32 from adhering to them and being difficult to separate when the X-bomb rack is compressed.

[0040] The annular middle base frame 1 is provided with the base elastic unit 2 on both the inner hole wall and the outer arc surface. There are multiple base elastic units 2, and the number of base elastic units 2 distributed on the inner and outer sides of the middle base frame 1 is equal. The base elastic units 2 distributed on the inner and outer sides of the middle base frame 1 are evenly aligned. The rib 11 and the convex tower 41 are located at the inner center of the base elastic unit 2. Each base elastic unit 2 is provided with an X-bomb rack 3, a bullet top cap 4, and a unit compartment sleeve 5. The X-bomb rack 3 is placed in the base bomb unit 2. The X-bomb rack 3 is made of spring steel with good elasticity. The bullet top cap 4 is elastically connected to the middle base frame 1 through the X-bomb rack 3. The connection between the X-bomb rack 3 and the bullet top cap 4 or the middle base frame 1 is adhesively or welded. A buffer bullet cavity 31 is provided in the X-bomb rack 3. The buffer bullet cavity 31 is in the shape of a cavity. A pad 32 is provided on the outside of the buffer bullet cavity 31. Two pads 32 are symmetrically distributed in one X-bomb rack 3. The pad 32 and the convex rib 11 or the convex tower 41 are aligned in the upper and lower directions, that is, the center of the smooth surface 111 of the convex rib 11 and the correspondingly distributed pad 32 of the X-bomb rack 3 and the center of the convex tower 41 of the bullet top cap 4 are all concentrically aligned. When the top cap 4 is compressed by the X-bomb rack 3, the distance between the smooth surface 111 of the rib 11 and the convex tower 41 and the pads 32 on the upper and lower sides of the X-bomb rack 3 is reduced. Furthermore, when the smooth surface 111 of the rib 11 and the convex tower 41 both contact the pads 32 on the upper and lower sides of the X-bomb rack, the buffer cavity 31 of the X-bomb rack is compressed and reduced. The buffer cavity 31 is a sealed cavity. When the buffer cavity 31 is reduced, the vibration generated when the pads 32 contact the rib 11 or the convex tower 41. In other words, the X-bomb rack is now in its maximum compression state, ensuring that it is not easily deformed or damaged by overpressure. The top cap 4 is placed on the outside of the X-bomb rack 3, effectively ensuring that the X-bomb rack can effectively rebound, causing the top cap 4 to bounce outward. A convex tower 41 is provided inside the spring top cap 4. The convex tower 41 can be welded to the spring top cap 4 or made into one piece. The spring top cap 4 can be made of metal material or non-metallic material with high strength such as polytetrafluoroethylene.

[0041] The unit cavity sleeve 5 can be placed between two adjacent base elastic units 2 for separation. The unit cavity sleeve 5 can also provide a spacing between the base elastic unit 2 and the wrapping ring 6. The unit cavity sleeve 5 can be made of a rubber material with good elasticity. The unit cavity sleeve 5 is used to separate the base elastic unit 2 into a cavity, so as to facilitate the contraction or rebound of the X-bomb rack 3 in the base elastic unit 2, and ensure that the elastic force of the X-bomb rack 3 is output to the outside more evenly.

[0042] The outside of the middle base frame 1, the base elastic unit 2, the elastic top cap 4 and the unit compartment sleeve 5 are provided with a sealing ring 6 connected by glue, that is, the outer surface of the sealing ring is covered with the sealing ring 6, and the thickness of the sealing ring 6 at the outer circle and the inner hole of the sealing ring is relatively thick, which is used for sealing. The sealing ring 6 can be made of tetrafluoroethylene material with good temperature resistance and pressure resistance to ensure that the sealing ring is not prone to fatigue failure in temperature and pressure resistant usage scenarios. The surface of the sealing ring 6 is evenly distributed with radial shrinking grooves 61 and longitudinal glue storage grooves 62. The number of the radial shrinking grooves 61 on the sealing ring 6 is equal to the number of the base elastic units 2. The radial shrinking grooves 61 and the longitudinal glue storage grooves 62 are distributed in a cross-wise and vertical manner, ensuring that when the sealing ring is installed, the inner hole and outer circle of the sealing ring will be compressed, that is, the X-bomb rack 3 is compressed and the sealing ring 6 will also be compressed. The thin layer of the sealing ring 6 at the end face of the sealing ring can shrink and store the compressed rubber through the radial shrinking grooves 61 and the longitudinal glue storage grooves 62 distributed in the cross-wise and vertical directions, so that the shrinkage forms wrinkle-like folds and wrinkles, ensuring that the sealing ring 6 at the outer circle and inner hole of the sealing ring can shrink well. The middle base frame 1 is placed in the middle of the sealing ring for support. A plurality of base elastic units 2 are evenly distributed inside and outside the middle base frame 1. The X-bomb frame inside the base elastic unit 2 can make the inner and outer wrapping rings 6 of the sealing ring be pushed outward, ensuring that not only the inner hole part of the sealing ring is sealed with compensating pressure, but also the outer ring of the sealing ring can have compensating pressure to enhance the sealing effect. The tightening force at the sealing part is better, ensuring that the sealing of the sealing ring can still be effective for a long time under high temperature and high pressure conditions.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based primarily on the scope of protection of the claims.

Claims

1. A compensating sealing ring for aviation, characterized in that: include: A middle base frame, wherein convex ribs are evenly distributed on both inner and outer sides of the middle base frame; The base elastic units are evenly distributed on both sides of the inner and outer sides of the middle base frame, and the convex ribs are placed at the inner center of the base elastic units; An X-bomb rack is placed in the base bomb unit. A buffer bullet cavity is provided in the X-bomb rack. A spacer is provided outside the buffer bullet cavity. The spacer is aligned with the rib in an up-and-down manner. A bomb top cap is placed on the outside of the X-bomb rack, and a convex tower is provided on the inside of the bomb top cap; A unit spacer sleeve is placed between two adjacent base bomb units for separation; The sealing ring is placed on the outside of the middle base frame, the base elastic unit, the elastic top cap and the unit compartment sleeve for adhesive connection, and radial shrinking grooves and longitudinal glue storage grooves are evenly distributed on the surface of the sealing ring.

2. The compensating sealing ring for aviation use according to claim 1, characterized in that: The middle base frame is fixedly connected to the convex rib, and the outer end of the convex rib is provided with a smooth surface. The center of the smooth surface of the convex rib and the center of the correspondingly distributed pad of the X-bomb frame and the convex tower of the bomb top cap are all concentrically aligned.

3. The compensating sealing ring for aviation use according to claim 2, characterized in that: When the bullet cap is compressed by the X-bomb frame, the distances between the smooth surface of the rib and the convex tower and the pads on the upper and lower sides of the X-bomb frame are reduced.

4. The compensating sealing ring for aviation use according to claim 3, characterized in that: When the smooth surface of the convex rib and the convex tower both contact the pads on the upper and lower sides of the X-bomb rack, the buffer bullet cavity of the X-bomb rack is compressed and shrunk.

5. The compensating sealing ring for aviation use according to claim 4, characterized in that: The buffer elastic cavity is a sealed cavity. When the buffer elastic cavity shrinks, the vibration generated when the pad and the supporting piece come into contact with the rib or the convex tower is reduced.

6. The compensating sealing ring for aviation use according to claim 5, characterized in that: The cross-sectional shape of the convex rib is the same as that of the convex tower.

7. The compensating sealing ring for aviation use according to claim 1, characterized in that: The middle base frame is a circular annular ring, and the base bullet units are arranged on the inner hole wall and the arc surface of the outer circle of the middle base frame. There are multiple base bullet units, and each base bullet unit is provided with an X-bomb rack, a bullet top cap and a unit compartment sleeve.

8. The compensating sealing ring for aviation use according to claim 7, characterized in that: The number of the basic elastic units distributed on the inner and outer sides of the middle base frame is equal, and the basic elastic units distributed on the inner and outer sides of the middle base frame are evenly aligned.

9. The compensating sealing ring for aviation use according to claim 1, characterized in that: The number of the radial shrinking rubber grooves on the wrapping ring is equal to the number of the basic elastic units, and the radial shrinking rubber grooves and the longitudinal rubber storage grooves are distributed in a cross-shaped pattern.

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