Engine sealing element for aviation

Abstract

The utility model provides an aviation engine sealing element, and belongs to the technical field of aviation auxiliary instruments. Comprising a sealing element body, integrally-formed L-shaped baffle rings are symmetrically arranged at the two ends of the inner side wall of the sealing element body, an annular cavity is defined by the sealing element body and the L-shaped baffle rings, an elastic supporting assembly is slidably connected into the annular cavity and comprises a first supporting annular plate and a second supporting annular plate, and a buffer spring is arranged between the first supporting annular plate and the second supporting annular plate. Under the action of the elastic supporting assembly, the buffer spring can assist the sealing element body and the L-shaped baffle ring to rebound quickly, so that the sealing element body and the L-shaped baffle ring are not in a compressed state for a long time, the sealing element body and the L-shaped baffle ring are effectively prevented from being compressed into an irreversible state, the sealing performance is prevented from being influenced, and the sealing effect is greatly improved; and the elastic supporting assembly is plugged into the annular cavity, so that the elastic supporting assembly can be protected, and the service life is prolonged.

Description

Technical Field

[0001] The utility model provides an aviation engine seal, belonging to the technical field of aviation auxiliary equipment. Background Art

[0002] Aviation, a complex and strategically significant human activity, refers to the flight activities of aircraft in the Earth's atmosphere, as well as many related fields such as scientific research and education, industrial manufacturing, public transportation, professional operations, aviation sports, national defense and military, and government management. Through the use of air space and aircraft, aviation activities can be subdivided into many independent industries and fields, such as aviation manufacturing, civil aviation, etc. People often use this term in their respective fields, and its connotation is rich and varied. Aircraft engaged in flight activities, also known as aircraft, are divided into two categories: lighter-than-air aircraft and heavier-than-air aircraft. The former relies on the static buoyancy of air to rise into the air, such as balloons and airships, while the latter relies on the aerodynamic force generated by relative motion with the air to rise into the air, such as airplanes and helicopters. According to whether they are manned or not, they can be divided into manned aircraft and unmanned aircraft.

[0003] The engine is an indispensable equipment in the aviation field. The engine for aviation must be fully sealed when in use. The seals currently used are only made of rubber material. After long-term use, the seals are often compressed into an irreversible state, which affects the sealing performance. The sealing effect needs to be improved. Based on this, the utility model provides an engine seal for aviation. Utility Model Content

[0004] The technical problem solved by the utility model is that: the sealing member is made of rubber material only, and after long-term use, the sealing member is often compressed into an irreversible state, which affects the sealing performance and the sealing effect needs to be improved.

[0005] In order to solve the technical problem, the technical solution provided by the utility model is: an engine seal for aviation, including a seal body, wherein both ends of the inner wall of the seal body are symmetrically provided with integrally formed L-shaped retaining rings, an annular cavity is surrounded by the seal body and the L-shaped retaining ring, an elastic support component is slidably connected in the annular cavity, the elastic support component includes support ring plate 1 and support ring plate 2, and a buffer spring is provided between support ring plate 1 and support ring plate 2.

[0006] Furthermore, the sealing body and the L-shaped retaining ring are both made of fluororubber material.

[0007] Furthermore, a damper matched with a buffer spring is provided between the first support ring plate and the second support ring plate.

[0008] Furthermore, the two side walls of the support ring plate 1 and the support ring plate 2 are circumferentially provided with a plurality of protrusions, and the inner side wall of the sealing body and the inner side wall of the L-shaped retaining ring are provided with sliding grooves matching the protrusions.

[0009] Furthermore, the buffer spring is made of aviation spring steel.

[0010] Furthermore, the distance between the side walls of the L-shaped retaining rings at both ends that are close to each other is 0.3-1 cm.

[0011] Beneficial effects of the utility model:

[0012] 1 When the seal body and the L-shaped retaining ring are compressed, the annular cavity is compressed, and the support ring plate 1 and the support ring plate 2 move toward the middle direction of the annular cavity, and the distance between the support ring plate 1 and the support ring plate 2 is shortened, and the buffer spring made of SUP10 steel is compressed. The buffer spring in the compressed state can assist the seal body and the L-shaped retaining ring to rebound quickly, so that the seal body and the L-shaped retaining ring will not be in a compressed state for a long time, effectively preventing the seal body and the L-shaped retaining ring from being compressed into an irreversible state, so as not to affect the sealing performance, and the sealing effect is greatly improved;

[0013] 2. By inserting the elastic support component into the annular cavity and matching the protrusion with the slide groove, the support ring plate 1 and the support ring plate 2 are limited to ensure that the support ring plate 1 and the support ring plate 2 slide in the annular cavity surrounded by the seal body and the L-shaped retaining ring, and the elastic support component can be protected to extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an engine seal for aviation.

[0015] Figure 2 The utility model is a schematic plan view of an engine seal for aviation use.

[0016] Figure 3 The utility model is a schematic diagram of the structure of an elastic support assembly of an aviation engine seal.

[0017] Figure 4 This is a partial enlarged view of an aviation engine seal according to the utility model.

[0018] 1. Sealing body; 2. L-shaped retaining ring; 3. Annular cavity; 4. Elastic support assembly; 5. Support ring plate 1; 6. Support ring plate 2; 7. Buffer spring; 8. Damper; 9. Protrusion; 10. Slide groove. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] According to the attached Figure 1 , 2 As shown in Figure 4: The utility model provides an engine seal for aviation: it includes a seal body 1, and both ends of the inner wall of the seal body 1 are symmetrically provided with integrally formed L-shaped retaining rings 2, and an annular cavity 3 is surrounded by the seal body 1 and the L-shaped retaining ring 2. The seal body 1 and the L-shaped retaining ring 2 are both made of fluororubber material. The introduction of fluorine atoms gives the rubber excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance. It has been widely used in aerospace, aviation, automobiles, petroleum and household appliances. It is an irreplaceable key material in the cutting-edge defense industry. An elastic support component 4 is slidably connected in the annular cavity 3, and the distance between the side walls of the L-shaped retaining rings 2 at both ends that are close to each other is 0.3-1cm. A suitable distance is selected to facilitate the elastic support component 4 to be inserted into the annular cavity 3.

[0021] According to the attached Figure 2 , 3 As shown in 4: the elastic support assembly 4 includes a support ring plate 1 5 and a support ring plate 2 6. A buffer spring 7 is arranged between the support ring plate 1 5 and the support ring plate 2 6. The buffer spring 7 is made of aviation spring steel. The spring steel is SUP10 (SAE6150). SUP10 is a high-quality spring steel suitable for industrial fields such as engineering, automobiles, and aviation. In the aviation field, its good elasticity, high strength, and fatigue strength make it suitable for manufacturing spring elements, connectors, suspension systems, and brake systems. In the aviation field, its good elasticity, high strength and fatigue strength make it suitable for manufacturing spring elements, connectors, suspension systems and braking systems. A damper 8 matched with a buffer spring 7 is provided between the support ring plate 1 5 and the support ring plate 2 6, which plays a role in shock absorption and energy dissipation, and effectively offsets the compression force. The sealing body 1 and the side of the L-shaped retaining ring 2 are sealed and fitted with the mounting surface of the engine to be sealed. During the sealing process, when the sealing body 1 and the L-shaped retaining ring 2 are compressed, the annular cavity 3 is compressed, and then the support ring plate 1 5 and the support ring plate 2 6 move toward the middle direction of the annular cavity 3, thereby shortening the distance between the support ring plate 1 5 and the support ring plate 2 6, and then the buffer spring 7 made of SUP10 spring steel is compressed. The buffer spring 7 in a compressed state can assist the sealing body 1 and the L-shaped retaining ring 2 to rebound quickly, so that the sealing body 1 and the L-shaped retaining ring 2 will not be in a compressed state for a long time, effectively preventing the sealing body 1 and the L-shaped retaining ring 2 from being compressed into an irreversible state, so as not to affect the sealing performance, and the sealing effect is greatly improved.

[0022] According to the attached Figure 2 , 4As shown: multiple protrusions 9 are circumferentially provided on both side walls of the support ring plate 1 5 and the support ring plate 2 6, and sliding grooves 10 matching the protrusions 9 are provided on the inner side wall of the sealing body 1 and the inner side wall of the L-shaped retaining ring 2, which play a role in limiting the support ring plate 1 5 and the support ring plate 2 6, ensuring that the support ring plate 1 5 and the support ring plate 2 6 slide in the annular cavity 3 surrounded by the sealing body 1 and the L-shaped retaining ring 2.

[0023] When in use, the elastic support component 4 is inserted into the annular cavity 3, and the protrusion 9 is matched with the slide groove 10, and the support ring plate 1 5 and the support ring plate 2 6 are limited to ensure that the support ring plate 1 5 and the support ring plate 2 6 slide in the annular cavity 3 surrounded by the sealing body 1 and the L-shaped retaining ring 2, and the elastic support component 4 can be protected to extend the service life. The sealing body 1 and the side surface of the L-shaped retaining ring 2 are sealed and fitted with the mounting surface of the engine to be sealed. During the sealing process, when the sealing body 1 and the L-shaped retaining ring 2 are compressed, the annular cavity 3 is compressed, and then the support ring plate 1 5 and the support ring plate 2 are moved toward the middle direction of the annular cavity 3. Move, thereby shortening the distance between the support ring plate 1 5 and the support ring plate 2 6, thereby compressing the buffer spring 7 made of SUP10 spring steel. Since the buffer spring 7 made of SUP10 spring steel has good rebound performance, under the action of the damper 8, vibration reduction and energy dissipation are achieved, so that the compression degree of the sealing body 1 and the L-shaped retaining ring 2 is reduced. The buffer spring 7 in the compressed state can assist the sealing body 1 and the L-shaped retaining ring 2 to rebound quickly, so that the sealing body 1 and the L-shaped retaining ring 2 will not be in a compressed state for a long time, and the sealing body 1 and the L-shaped retaining ring 2 are effectively prevented from being compressed into an irreversible state, so as not to affect the sealing performance, and the sealing effect is greatly improved.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An engine seal for aviation, comprising a seal body (1), characterized in that: The inner side walls of the sealing body (1) are symmetrically provided with integrally formed L-shaped retaining rings (2); an annular cavity (3) is formed between the sealing body (1) and the L-shaped retaining ring (2); an elastic support component (4) is slidably connected in the annular cavity (3); the elastic support component (4) comprises a support ring plate 1 (5) and a support ring plate 2 (6); a buffer spring (7) is provided between the support ring plate 1 (5) and the support ring plate 2 (6).

2. An aviation engine seal according to claim 1, characterized in that: The sealing element body (1) and the L-shaped retaining ring (2) are both made of fluororubber material.

3. The engine seal for aviation according to claim 1, characterized in that: A damper (8) matched with a buffer spring (7) is provided between the first supporting ring plate (5) and the second supporting ring plate (6).

4. The engine seal for aviation according to claim 1, characterized in that: The two side walls of the support ring plate 1 (5) and the support ring plate 2 (6) are both circumferentially provided with a plurality of protrusions (9), and the inner side wall of the sealing body (1) and the inner side wall of the L-shaped retaining ring (2) are both provided with sliding grooves (10) matching the protrusions (9).

5. The engine seal for aviation according to claim 1, characterized in that: The buffer spring (7) is made of aviation spring steel.

6. The engine seal for aviation according to claim 1, characterized in that: The distance between the side walls of the L-shaped retaining rings (2) at both ends that are close to each other is 0.3-1 cm.

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