High-pressure swinging hose for rocket engine
Through the combined structure of three-layer corrugated pipe and metal braided mesh sleeve, the problem of insufficient strength and flexibility of rocking hoses in high-pressure environments is solved, and stable operation under high pressure and extended service life is achieved.
Patent Information
- Application Number
- CN202422574698.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-10-14
- Filing Date
- 2024-10-24
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-24
AI Technical Summary
While ensuring structural strength, existing rocking hoses are difficult to improve their flexibility and pressure resistance at the same time, and cannot be used stably in high-pressure environments.
A three-layer or multi-layer corrugated pipe structure is adopted, and the outer coaxial sleeve is reinforced with the ring, and the metal braided mesh sleeve is welded to form an overall structure to enhance flexibility and strength, and use the smooth surface contact surface to reduce wear.
Improves the overall strength and flexibility of the rocking hose, extends service life, and ensures stable operation in high-pressure environments.
Smart Images
Figure CN223137336U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of swing hoses, relates to the swing hose of a rocket engine, and particularly relates to a high-pressure swing hose for a rocket engine. Background Art
[0002] A swing hose is a component inside a rocket engine, which can adjust the attitude of the engine. It has both elastic and sealing characteristics, and can generate axial, angular, and combined displacements under the action of external forces and torques. It is widely used in the aerospace field. Due to the characteristics of the swing hose and the requirements of the application environment, how to improve the flexibility and pressure resistance of the swing hose while ensuring the structural strength is the key problem to be overcome.
[0003] Therefore, we propose a high-pressure swing hose for a rocket engine to solve the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-pressure swing hose for a rocket engine with high strength and good flexibility.
[0005] To solve the above problems, the technical solution of the utility model is as follows:
[0006] A high-pressure swing hose for a rocket engine includes:
[0007] A corrugated pipe, which is provided with three or more layers, and both ends are coaxially fixed on the inner wall of the joint. A number of reinforcing rings are coaxially installed at intervals on the outer wall of the corrugated pipe, which is suitable for strengthening the strength of the corrugated pipe;
[0008] A wire mesh sleeve, which is coaxially and tightly wrapped outside the corrugated pipe. The wire mesh sleeve is provided with two or more layers, and both ends are coaxially clamped on the outer wall of the joint through a crimping ring.
[0009] In a further embodiment, the outer wall of the joint and the inner wall of the crimping ring are both smooth surfaces.
[0010] In a further embodiment, the outer wall of the joint and the inner wall of the crimping ring are flat surfaces, which are suitable for fixing the wire mesh sleeve.
[0011] In a further embodiment, at least one inward annular groove is formed on the outer wall of the joint, and at least one annular protrusion corresponding to the annular groove is formed on the inner wall of the crimping ring.
[0012] In a further embodiment, the end of the wire mesh sleeve, the outer end surface of the crimping ring, and the outer end surface of the joint are fixedly installed together by welding to form a weld bead, which is suitable for firmly connecting the three into a whole.
[0013] In a further embodiment, the wire mesh sleeve is a wire braided mesh.
[0014] In a further embodiment, a reinforcing ring is coaxially sleeved inside the trough of the corrugated pipe.
[0015] In a further embodiment, the cross-section of the reinforcing ring is fan-shaped or circular.
[0016] In a further embodiment, two layers of wire meshes are provided.
[0017] In a further embodiment, three layers of corrugated pipes are provided.
[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0019] 1. This swing hose includes a wire mesh and a corrugated pipe which are coaxially and spaced apart. Joints are commonly installed at both ends of the wire mesh and the corrugated pipe, so that the wire mesh and the corrugated pipe form an integral structure. The wire mesh adopts a metal braided mesh structure, ensuring that the wire mesh and the corrugated pipe have the ability to bend and swing, and have a certain structural strength, improving the quality of the swing hose and having a long service life.
[0020] 2. Two layers of wire meshes and three layers of corrugated pipes are provided for this swing hose, enabling the wire mesh and the corrugated pipe to improve the structural strength while ensuring flexibility. A number of reinforcing rings are sleeved at intervals on the outer wall of the corrugated pipe, further enhancing the strength of the corrugated pipe, enabling the corrugated pipe to be stably used in a high-pressure environment.
[0021] 3. The corrugated pipe is welded inside the joint of this swing hose, and a wire mesh pressing ring is sleeved outside the wire mesh, clamping the wire mesh between the joint and the wire mesh pressing ring. This can disperse the force received by the wire mesh from the weld to the entire contact surface between the wire mesh pressing ring and the wire mesh, extending the service life of the wire mesh. The outer wall of the joint and the inner wall of the wire mesh pressing ring are smooth surfaces, avoiding abrasion of the wire mesh during the swinging process. The outer wall of the joint and the inner wall of the wire mesh pressing ring can be flat or curved surfaces, which can increase the upper limit of the force borne by the wire mesh. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of a high-pressure swing hose for a rocket engine;
[0023] Figure 2 It is Figure 1 One of the enlarged views at A in
[0024] Figure 3 It is Figure 1 Another enlarged view at A in
[0025] In the figure: 1. Wire mesh; 2. Joint; 3. Corrugated pipe; 31. Reinforcing ring; 4. Weld; 5. Wire mesh pressing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0027] Embodiment 1:
[0028] A high-pressure swing hose for a rocket engine, as Figures 1 to 3 shown, includes a wire mesh sleeve 1, a pair of connectors 2, and a corrugated pipe 3. The corrugated pipe 3 is coaxially arranged inside the wire mesh sleeve 1, and the wire mesh sleeve 1 is closely attached to the outer side of the corrugated pipe 3. Both ends of the wire mesh sleeve 1 and the corrugated pipe 3 are fixed on a pair of connectors 2 to form an integral swing hose.
[0029] The wire mesh sleeve 1 is a mesh structure formed by braiding a number of metal wires. The mesh structure has two layers, which can improve the flexibility of the wire mesh sleeve 1 while ensuring its strength. The several metal wires in each layer are all inclined and divided into two directions, so that a number of V-shaped patterns are formed on the surface of the mesh structure; the corrugated pipe 3 is formed by stacking and installing three layers of metal corrugated pipes, which can improve the flexibility of the corrugated pipe 3 while ensuring its strength. Reinforcing rings 31 are fixedly installed in a number of wave valleys on the outer wall of the corrugated pipe 3. The inner side surface of the reinforcing ring 31 is a curved surface structure corresponding to the shape of the wave valley. The outer side surface of the reinforcing ring 31 can be a curved surface structure, a flat surface structure, or other structures that meet the installation requirements. In this embodiment, the outer side surface of the reinforcing ring 31 is a curved surface structure; the reinforcing ring 31 can improve the structural strength of the corrugated pipe 3 and ensure that the corrugated pipe 3 can be used normally in a high-pressure environment.
[0030] As Figure 2 shown, the connector 2 is a circular ring structure. The connector 2 is located at the ends of the wire mesh sleeve 1 and the corrugated pipe 3. The corrugated pipe 3 is welded to the inside of the connector 2. A wire mesh pressing ring 5 is sleeved on the outside of the wire mesh sleeve 1, clamping the wire mesh sleeve 1 between the connector 2 and the wire mesh pressing ring 5. The end of the wire mesh sleeve 1 is connected to the outer end surface of the connector 2 and the outer end surface of the wire mesh pressing ring 5 by welding to form a weld bead 4, so that the three can form a firm and stable whole, improving the quality of the swing hose; the outer wall of the connector 2 and the inner wall of the wire mesh pressing ring 5 are both smooth surfaces, avoiding abrasion of the wire mesh sleeve 1 during the swinging process; asFigure 2 As shown, the outer wall of the joint 2 and the inner wall of the wire pressing ring 5 can be set as flat surfaces, or as Figure 3 shown, the outer wall of the joint 2 and the inner wall of the wire pressing ring 5 are set as corresponding curved surfaces. For example, at least one inward annular groove is formed on the outer wall of the joint 2, and at least one annular protrusion corresponding to the annular groove is formed on the inner wall of the wire pressing ring 5, which can reduce the force received by the wire mesh sleeve 1, improve the quality of the wire mesh sleeve 1, and extend the service life.
[0031] Embodiment 2:
[0032] The number of layers of the wire mesh sleeve 1 can be set to one layer, three layers, four layers or more layers, and the number of layers of the corrugated pipe 3 can be set to two layers, four layers, five layers or more layers. The number of layers of both is determined according to the model, standard and specific use environment of the swing hose.
[0033] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A high-pressure swing hose for a rocket engine, characterized in that, Comprising: A corrugated pipe (3), with at least one layer provided, and both end portions thereof are coaxially fixed to the inner wall of the joint (2). A plurality of reinforcing rings (31) are coaxially installed at intervals on the outer wall of the corrugated pipe (3), suitable for strengthening the strength of the corrugated pipe (3); A wire mesh sleeve (1), coaxially and tightly covering the outside of the corrugated pipe (3). The wire mesh sleeve (1) has at least one layer provided, and both end portions thereof are coaxially clamped to the outer wall of the joint (2) through a wire mesh pressing ring (5).
2. The high-pressure swivel hose for a rocket engine according to claim 1, wherein The outer wall of the joint (2) and the inner wall of the wire mesh pressing ring (5) are both smooth surfaces.
3. The high-pressure swing hose for a rocket engine according to claim 2, characterized in that, The outer wall of the joint (2) and the inner wall of the wire mesh pressing ring (5) are flat surfaces, suitable for fixing the wire mesh sleeve (1).
4. The high-pressure swing hose for a rocket engine according to claim 2, wherein At least one inward annular groove is formed on the outer wall of the joint (2), and at least one annular protrusion corresponding to the annular groove is formed on the inner wall of the wire mesh pressing ring (5).
5. The high-pressure swing hose for a rocket engine according to claim 1, characterized in that, The end portion of the wire mesh sleeve (1), the outer end surface of the wire mesh pressing ring (5), and the outer end surface of the joint (2) are fixedly installed together by welding to form a weld bead (4), suitable for firmly connecting the three into a whole.
6. The high-pressure swing hose for a rocket engine according to claim 1, characterized in that, The wire mesh sleeve (1) is a wire braided mesh.
7. The high-pressure swing hose for a rocket engine according to claim 1, characterized in that, The reinforcing ring (31) is coaxially sleeved inside the trough of the corrugated pipe (3).
8. The high-pressure swing hose for a rocket engine according to claim 7, characterized in that, The cross-section of the reinforcing ring (31) is fan-shaped or circular.
9. The high-pressure swivel hose for a rocket engine according to any one of claims 1 to 8, characterized in that, Two layers of the wire mesh sleeve (1) are provided.
10. The high-pressure swing hose for a rocket engine according to any one of claims 1 to 8, characterized in that, Three layers of the corrugated pipe (3) are provided.