Connecting structure of spaceflight fuel conveying pipeline

Abstract

The utility model discloses a spaceflight fuel conveying pipeline connecting structure, and particularly relates to the technical field of pipeline connection, the spaceflight fuel conveying pipeline connecting structure comprises a first pipeline, a second pipeline is arranged at the right end of the first pipeline, the outer surface of the first pipeline and the outer surface of the second pipeline are jointly and fixedly connected with an outer sealing mechanism, and the outer surface of the outer sealing mechanism is fixedly connected with a fixing mechanism. The inner side of the first pipeline and the inner side of the second pipeline are jointly and fixedly connected with an inner sealing mechanism. The utility model discloses a spaceflight fuel conveying pipeline connecting structure which is characterized in that when the spaceflight fuel conveying pipeline connecting structure is used, a first pipeline and a second pipeline are fixedly connected with an outer sealing mechanism, the sealing effect on the outer sides of the first pipeline and the second pipeline is achieved through the outer sealing mechanism, and a sealing ring and a sealing ring clamping seat are fixed to the first pipeline and the second pipeline respectively; the inner side of the connecting position of the first pipeline and the second pipeline is sealed through the inner sealing mechanism, the double-sealing effect can be achieved, and the situation that leakage occurs to the connecting position of the first pipeline and the second pipeline due to abrasion of a sealing ring can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a connection structure for aerospace fuel delivery pipelines. Background Technology

[0002] Space fuel delivery pipelines are an important component of the rocket fuel delivery system at space launch centers, playing a crucial role in the rocket launch process.

[0003] In aerospace fuel delivery pipeline systems, rubber joints are an indispensable component. These rubber joints have excellent elasticity, corrosion resistance, and shock absorption, and can effectively buffer vibrations and thermal expansion and contraction in pipelines under extremely harsh working environments, such as high pressure, high temperature, and extremely corrosive media.

[0004] In some existing technologies, the connection structures of most aerospace fuel delivery pipelines suffer from wear and tear on the sealing rings after prolonged use. If these rings are not replaced in time, problems such as poor sealing performance, easy leakage, and complex maintenance will occur, resulting in a short service life. Utility Model Content

[0005] The main purpose of this utility model is to provide a connection structure for aerospace fuel delivery pipelines, which can effectively solve the problems of poor sealing effect, easy leakage, complex maintenance, and short service life in most existing aerospace fuel delivery pipeline connection structures after long-term use, where the sealing ring is worn and cannot be replaced in time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A connection structure for an aerospace fuel delivery pipeline includes a first pipeline, a second pipeline located at the right end of the first pipeline, an outer sealing mechanism fixedly connected to the outer surfaces of the first and second pipelines, a fixing mechanism fixedly connected to the outer surface of the outer sealing mechanism, and an inner sealing mechanism fixedly connected to the inner sides of the first and second pipelines.

[0008] Preferably, a sealing groove seat one is fixedly connected to the right side of the outer surface of the first pipe, and a sealing groove seat two is fixedly connected to the left side of the outer surface of the second pipe. Springs are symmetrically fixedly connected to the inner surfaces of both the sealing groove seat one and the sealing groove seat two, and a limit telescopic rod is provided on the inner side of each of the springs.

[0009] Preferably, a reinforcing seat is fixedly connected to the outer surface of both ends of several springs and the limiting telescopic rod, and a sealing ring is fixedly connected to the right end of several springs and the reinforcing seat located on the left end. A ring sealing block is fixedly connected to the right end of the sealing ring.

[0010] Preferably, the left ends of several springs and limiting telescopic rods located on the right end are jointly fixedly connected to a second sealing ring, and the left end of the second sealing ring is fixedly connected to an annular sealing groove seat, and the annular sealing block and the annular sealing groove seat are engaged.

[0011] Preferably, both the outer surfaces of the first sealing groove seat and the second sealing groove seat are fixedly connected with fixing rings, and the inner surfaces of the two fixing rings are symmetrically provided with threaded grooves.

[0012] Preferably, the inner surfaces of the plurality of threaded grooves are threaded with threaded rods, and the outer surfaces of the right ends of the plurality of threaded rods are threaded with nuts.

[0013] Preferably, a sealing ring is fixedly connected to the right side of the inner surface of the first pipe, and a sealing ring holder is slidably connected to the right side of the outer surface of the sealing ring, with the right end of the sealing ring holder fixedly connected to the left side of the inner surface of the second pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the implementation of this utility model, by setting an external sealing mechanism, most aerospace fuel delivery pipeline connection structures, after long-term use, will experience problems such as poor sealing effect, easy leakage, and complicated maintenance if the sealing rings are not replaced in time due to wear. To address this, the annular sealing block inside the sealing groove seat one engages with the annular sealing groove seat inside the sealing groove seat two. When wear occurs at the annular sealing block and the annular sealing groove seat, the spring at their rear end will push the sealing ring one and the sealing ring two towards the opposite end, thereby repairing the worn areas of the sealing rings, helping to extend the service life of the sealing device and reduce the frequency of sealing device replacement.

[0016] 2. In the implementation of this utility model, by setting an internal sealing mechanism, the left part of the sealing ring is fixed to the first pipe, and the right part is slidably connected to the inner side of the second pipe. The right end of the sealing ring holder is fixed to the inner side of the second pipe, and the right end of the sealing ring is slidably connected to the inner side of the sealing ring holder, thus achieving double sealing and improving the sealing effect at the connection between the first pipe and the second pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the fixing mechanism of this utility model;

[0020] Figure 4 For the present utility model Figure 2 A magnified structural diagram at point A;

[0021] Figure 5 This is a partial cross-sectional view of the sealing mechanism of this utility model;

[0022] Figure 6 For the present utility model Figure 5 A magnified structural diagram at point B.

[0023] In the diagram: 1. Pipe 1; 2. Pipe 2; 3. External sealing mechanism; 301. Sealing groove seat 1; 302. Spring; 303. Limiting telescopic rod; 304. Reinforcing seat; 305. Sealing ring 1; 306. Ring sealing block; 307. Ring sealing groove seat; 308. Sealing ring 2; 309. Sealing groove seat 2; 4. Fixing mechanism; 401. Fixing ring; 402. Threaded groove; 403. Threaded rod; 404. Nut; 5. Internal sealing mechanism; 501. Sealing ring; 502. Sealing ring seat. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1

[0026] like Figure 1 As shown, an aerospace fuel delivery pipeline connection structure includes a pipeline 1, characterized in that: a pipeline 2 is provided at the right end of the pipeline 1, an outer sealing mechanism 3 is fixedly connected to the outer surfaces of the pipeline 1 and the pipeline 2, a fixing mechanism 4 is fixedly connected to the outer surface of the outer sealing mechanism 3, and an inner sealing mechanism 5 is fixedly connected to the inner sides of the pipeline 1 and the pipeline 2.

[0027] In this embodiment, both pipe 1 and pipe 2 are fixedly connected to the external sealing mechanism 3 during implementation, and the sealing effect on the outside of pipe 1 and pipe 2 is achieved through the external sealing mechanism 3.

[0028] The sealing ring 501 and the sealing ring holder 502 are fixed to pipe 1 and pipe 2 respectively. The inner sealing mechanism 5 seals the inner side of the connection between pipe 1 and pipe 2, which can achieve a double sealing effect and help prevent leakage at the connection between pipe 1 and pipe 2 due to wear of the sealing ring.

[0029] Specifically, in order to extend the service life of the sealing device, refer to Figure 4 , Figure 5 and Figure 6In this embodiment, a sealing groove seat 301 is fixedly connected to the right side of the outer surface of pipe 1, and a sealing groove seat 309 is fixedly connected to the left side of the outer surface of pipe 2. Springs 302 are symmetrically fixedly connected to the inner surfaces of sealing groove seat 301 and sealing groove seat 309. Limiting telescopic rods 303 are provided on the inner side of several springs 302.

[0030] Further reference Figure 4 , Figure 5 and Figure 6 In this embodiment, a reinforcing seat 304 is fixedly connected to the outer surfaces of several springs 302 and the limiting telescopic rod 303 at both ends. A sealing ring 305 is fixedly connected to the right end of several springs 302 and the reinforcing seat 304 at the left end. A ring sealing block 306 is fixedly connected to the right end of the sealing ring 305.

[0031] Further reference Figure 4 , Figure 5 and Figure 6 In this embodiment, the left ends of several springs 302 located on the right end and the limiting telescopic rod 303 are fixedly connected to a sealing ring 308. The left end of the sealing ring 308 is fixedly connected to an annular sealing groove seat 307. The annular sealing block 306 and the annular sealing groove seat 307 are engaged.

[0032] During implementation, the annular sealing block 306 inside the sealing groove seat 1 301 engages with the annular sealing groove seat 307 inside the sealing groove seat 2 309. When wear occurs at the annular sealing block 306 and the annular sealing groove seat 307, the spring 302 at their rear end will push the sealing ring 1 305 and the sealing ring 2 308 towards the opposite end, thereby repairing the worn parts of the sealing ring, helping to extend the service life of the sealing device and reduce the frequency of replacing the sealing device.

[0033] Example 2

[0034] This embodiment adds a fixing mechanism 4 to fix pipe 1 and pipe 2 based on embodiment 1. The fixing mechanism 4 is fixed on the outer surface of the outer sealing mechanism 3, thereby achieving the purpose of fixing pipe 1 and pipe 2.

[0035] Specifically, in order to achieve the desired fixation of pipe 1 and pipe 2, refer to Figure 1 , Figure 2 and Figure 3In this embodiment, a fixing ring 401 is fixedly connected to the outer surface of both the sealing groove seat 1 301 and the sealing groove seat 2 309. Threaded grooves 402 are symmetrically arranged on the inner surface of both fixing rings 401. Threaded rods 403 are threadedly connected to the inner surface of several threaded grooves 402. Nuts 404 are threadedly connected to the outer surface of the right end of several threaded rods 403.

[0036] Example 3

[0037] This embodiment adds an inner sealing mechanism 5 to seal the connection between pipe 1 and pipe 2 based on embodiment 1. The inner sealing mechanism 5 seals from the inside based on the outer sealing mechanism 3, thereby improving the sealing effect between pipe 1 and pipe 2.

[0038] For details, please refer to Figure 1 and Figure 2 In this embodiment, a sealing ring 501 is fixedly connected to the right side of the inner surface of pipe 1, and a sealing ring holder 502 is slidably connected to the right side of the outer surface of the sealing ring 501. The right end of the sealing ring holder 502 is fixedly connected to the left side of the inner surface of pipe 2.

[0039] During implementation, the left side of the sealing ring 501 is fixed to pipe 1, and the right side is slidably connected to the inside of pipe 2. The right end of the sealing ring holder 502 is fixed to the inside of pipe 2, and the right end of the sealing ring 501 is slidably connected to the inside of the sealing ring holder 502, thus achieving double sealing and improving the sealing effect at the connection between pipe 1 and pipe 2.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connection structure for an aerospace fuel delivery pipeline, comprising a pipeline (1), characterized in that: Pipe 1 (1) is provided with pipe 2 (2) at the right end. The outer surfaces of pipe 1 (1) and pipe 2 (2) are fixedly connected to an outer sealing mechanism (3). The outer surface of the outer sealing mechanism (3) is fixedly connected to a fixing mechanism (4). The inner sides of pipe 1 (1) and pipe 2 (2) are fixedly connected to an inner sealing mechanism (5).

2. The aerospace fuel delivery pipeline connection structure according to claim 1, characterized in that: A sealing groove seat 1 (301) is fixedly connected to the right side of the outer surface of the first pipe (1), and a sealing groove seat 2 (309) is fixedly connected to the left side of the outer surface of the second pipe (2). Springs (302) are symmetrically fixedly connected to the inner surfaces of the sealing groove seat 1 (301) and the sealing groove seat 2 (309). Limiting telescopic rods (303) are provided on the inner side of several springs (302).

3. The aerospace fuel delivery pipeline connection structure according to claim 2, characterized in that: A reinforcing seat (304) is fixedly connected to the outer surfaces of both ends of several springs (302) and limiting telescopic rods (303). A sealing ring (305) is fixedly connected to the right end of several springs (302) and reinforcing seat (304) located on the left end. A ring sealing block (306) is fixedly connected to the right end of the sealing ring (305).

4. The aerospace fuel delivery pipeline connection structure according to claim 3, characterized in that: The left ends of several springs (302) and limiting telescopic rods (303) located on the right end are fixedly connected to a sealing ring two (308). The left end of the sealing ring two (308) is fixedly connected to an annular sealing groove seat (307). The annular sealing block (306) and the annular sealing groove seat (307) are engaged.

5. The aerospace fuel delivery pipeline connection structure according to claim 2, characterized in that: The outer surfaces of the first sealing groove seat (301) and the second sealing groove seat (309) are fixedly connected with fixing rings (401), and the inner surfaces of the two fixing rings (401) are symmetrically provided with threaded grooves (402).

6. The aerospace fuel delivery pipeline connection structure according to claim 5, characterized in that: The inner surfaces of several threaded grooves (402) are threaded with threaded rods (403), and the outer surfaces of the right ends of several threaded rods (403) are threaded with nuts (404).

7. The aerospace fuel delivery pipeline connection structure according to claim 1, characterized in that: A sealing ring (501) is fixedly connected to the right side of the inner surface of the first pipe (1), and a sealing ring holder (502) is slidably connected to the right side of the outer surface of the sealing ring (501). The right end of the sealing ring holder (502) is fixedly connected to the left side of the inner surface of the second pipe (2).

Images