Swing hose and airspace engine

Abstract

The utility model provides a swing hose and an airspace engine, the swing hose at least comprises a corrugated pipe, a connecting part and a reinforcing ring periodically arranged on the corrugated pipe, and the reinforcing ring is embedded into the wave trough of the corrugated pipe; the connecting parts are arranged at the two ends of the corrugated pipe and used for being in butt joint with external equipment. According to the swing hose and the airspace engine, the composite reinforcing rings are adopted, the pressure bearing capacity of the swing hose is greatly improved, the service life of the swing hose is prolonged, and the weight and the manufacturing cost of the swing hose and the airspace engine are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to spaceflight engine technical field especially swing hose and spaceflight engine. BACKGROUND

[0002] Spaceflight engine includes pump before swing engine and pump after swing engine, and no matter pump before swing engine and pump after swing engine, swing hose is needed to realize swing compensation. With the improvement of service pressure, swing hose mostly adopts reinforcing ring to enhance pressure bearing capacity. At present, reinforcing ring adopts metal welding forming, and due to its strict size and shape requirement, leads to long production cycle, higher cost of reinforcing ring, and the weight of commonly used stainless steel material is also heavier.

[0003] Therefore, it is urgent to provide a swing hose and spaceflight engine with simple process, light weight and low cost. SUMMARY

[0004] To solve the above technical problems, the utility model provides a swing hose and spaceflight engine, which can increase the strength and modulus of the reinforcing ring, reduce the production cost and product weight.

[0005] The utility model discloses a swing hose, at least includes: bellows, connecting portion and periodically set in the bellows of reinforcing ring, the reinforcing ring is embedded in the bellows trough setting, the connecting portion is set up in the bellows both ends, is used for with external equipment and is connected.

[0006] In an embodiment, the reinforcing ring comprises at least an aramid fiber layer and a carbon fiber layer, the aramid fiber layer and the carbon fiber layer are cured and formed by ultra-low temperature epoxy resin; the aramid fiber layer is arranged on the outer layer of the reinforcing ring, and the carbon fiber layer is arranged on the inner layer of the reinforcing ring.

[0007] In an embodiment, the thickness of the aramid fiber layer ranges from 0.5mm to 1mm.

[0008] In an embodiment, the carbon fiber layer is filled by long fiber winding.

[0009] In an embodiment, the aramid fiber layer is filled by long fiber winding.

[0010] In an embodiment, the ratio of the carbon fiber layer to the aramid fiber layer is 3:7.

[0011] In any of the above embodiments, the reinforcing ring is a solid circular ring structure.

[0012] In an embodiment, the outer ring of the reinforcing ring protrudes from the crest of the bellows.

[0013] In one embodiment, the connecting portion is a welded joint fixedly arranged at both ends of the bellows.

[0014] The utility model provides a kind of aerospace engine on another aspect, at least comprising the swing hose in any one embodiment described above.

[0015] The utility model provides a kind of swing hose and aerospace engine, at least has following one's beneficial effect:

[0016] I, the utility model uses composite material to manufacture reinforcing ring and applies in swing hose, so that the weight of the swing hose and aerospace engine of the utility model is reduced, and cost is reduced.

[0017] II, the utility model's composite material reinforcing ring has large elastic modulus, and forming process is simple, production cycle is greatly shortened, and the delivery time of swing hose and aerospace engine is obviously accelerated.

[0018] After reading the specific implementation and in viewing the attached drawings, those skilled in the art will realize additional features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0020] Figure 1 It is the overall structure schematic diagram of the swing hose of the utility model embodiment.

[0021] Figure 2 It is the cross-sectional view of the reinforcing ring of the utility model embodiment. DETAILED DESCRIPTION

[0022] The features and exemplary embodiments of each aspect of the utility model will be described in detail below, in order to make the purpose, technical scheme and advantages of the utility model more clear and apparent, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the utility model, for exemplary description of the principle of the utility model, and are not configured to limit the utility model. In addition, the components in the drawings are not necessarily drawn to scale. For example, the size of some components in the drawings can be enlarged for other components or regions, to help the understanding of the utility model embodiments.

[0023] The orientation words appearing in the following description are the directions shown in the drawings, and are not to limit the specific structure of the embodiments of the utility model. In the description of the utility model, it is to be explained that, unless otherwise specified, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0024] In addition, the terms "including", "containing", "having" or any other variants thereof are intended to cover non-exclusive inclusion, so that the inclusion of a series of element structures or components not only includes those elements, but also includes other elements not explicitly listed or inherent in the structure, component. Without more limitation, the element defined by the statement "including" does not exclude the presence of other same elements in the article or device including the element.

[0025] Spatial relationship terms such as "below", "under", "under", "low", "above", "on", "high" and the like are used to facilitate the description to explain the position of one element relative to the second element, indicating that these terms are intended to cover different orientations of the device in addition to the orientations shown in the drawings. In addition, for example, "one element is on / under another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be considered as limiting. Similar terms indicate similar elements throughout the description.

[0026] For those skilled in the art, the utility model can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the utility model by showing examples of the utility model.

[0027] Referring to Figure 1 The utility model provides a kind of swing hose at least including bellows 1, connecting portion 2 and periodically arranged in bellows 1 reinforcing ring 3.Reinforcing ring 3 is embedded in the trough of bellows 1, that is, reinforcing ring 3 is fixedly installed in several troughs on the outer wall of bellows 1, and the inner side of reinforcing ring 3 is adapted to the trough shape of bellows 1.The outer side of reinforcing ring 3 can be curved surface structure, plane structure or other structure meeting installation requirements, which can be determined according to the use scene of swing hose.In the embodiment, reinforcing ring 3 is solid ring structure, and the outer side is arc structure, coaxially arranged with bellows 1.

[0028] The connecting part 2 is arranged at both ends of the bellows 1 and used for connecting the bellows with external equipment. The connecting part 2 is in a circular ring structure, and the outer side of the side close to the bellows 1 is arranged beyond the wave crest of the bellows 1, so as to prevent the bellows from being damaged when the swing hose is connected and installed. The connecting part 2 can be a welded joint fixedly arranged at both ends of the bellows 1, and both ends of the bellows 1 are fixed with the welded joint by welding.

[0029] In the embodiment, the reinforcing ring 3 can be an O-shaped ring. The O-shaped reinforcing ring 3 mainly contacts the bellows 1 and bears the radial pressure of the bellows 1. The O-shaped reinforcing ring is currently formed by welding metal (such as stainless steel), and due to the strict size and shape requirements, the production cycle of the O-shaped reinforcing ring is long and the cost is high. In order to overcome the above technical problems, the swing hose of the utility model selects a composite material to manufacture the reinforcing ring. The composite material reinforcing ring has the characteristics of high strength and high modulus, and can improve the pressure bearing capacity of the hose when applied to the swing hose. Compared with the metal reinforcing ring, the composite material reinforcing ring has the advantages of simple forming, low density, light weight, large elastic modulus and low manufacturing cost, and also has the possibility of repeated use.

[0030] The forming process of the composite material reinforcing ring is as follows: a hot-pressing mold is processed according to the size accuracy requirements of the O-shaped reinforcing ring, and a continuous fiber prepreg is laid in the mold. It should be noted that the continuity of the fiber should be ensured during the laying process. After the laying is completed, the mold is hot-pressed and cured to form.

[0031] Referring to Figure 2 Further, the carbon fiber has high strength and high modulus, but poor wear resistance, and the aramid fiber has poor mechanical properties but excellent wear resistance. Therefore, the aramid fiber and the carbon fiber are used in a certain proportion in the embodiment. For example, the reinforcing ring at least includes an aramid fiber layer 31 and a carbon fiber layer 32, and the aramid fiber layer 31 and the carbon fiber layer 32 are formed by ultra-low temperature epoxy resin curing. Specifically, during the forming process of the reinforcing ring 3, the outer ring (the outer layer of the axial section of the reinforcing ring 3) uses 110D aramid II fiber prepreg (aramid fiber soaked in ultra-low temperature epoxy resin in advance), and the core (the inner layer of the axial section of the reinforcing ring 3) uses T300 carbon fiber prepreg (carbon fiber soaked in ultra-low temperature epoxy resin in advance). After the aramid fiber and the carbon fiber are filled into the forming mold, they are hot-pressed and formed. The reinforcing ring of the embodiment has a high fiber ratio, and the total fiber ratio of the reinforcing ring is about 45% to 60%. It should be noted that the ratio of the carbon fiber and the aramid fiber in the embodiment is about 3:7.

[0032] The swing hose of the utility model adopts a composite material reinforcing ring with a diameter of 4.5 mm, and the thickness of the aramid fiber layer is 0.5 mm to 1 mm.

[0033] In order to increase the bearing capacity of the reinforcing ring, carbon fiber layers can be filled with carbon fiber long fibers (prepregs), and aramid fiber layers can be filled with aramid long fibers (prepregs), which are cut and machined into the required circular cross-section after curing and molding.

[0034] The swinging hose in the embodiment of the utility model can be used for pump front swing and pump rear swing. The outer side of the swinging hose of the pump rear swing is usually provided with a flexible mesh cover. In order to avoid abrasion between the outer side of the corrugated hose and the flexible mesh cover, the reinforcing ring applied to the pump rear swing can be set as an armored ring, and the outer ring of the reinforcing ring protrudes from the wave crest of the corrugated hose.

[0035] In any one of the above embodiments, the swinging hose of the utility model further comprises a flexible mesh cover. The flexible mesh cover is sleeved on the outer side of the corrugated hose, and the axial two ends are tightly fixed by the welding joint. In order to ensure that the flexible mesh cover has the advantages of high elasticity and light weight, for example, the material of the flexible mesh cover can be carbon fiber. In addition, in order to ensure the stability of the structure of the flexible mesh cover, for example, the flexible mesh cover can be woven by carbon fiber and flexible low-temperature resin.

[0036] The above embodiments can be combined with each other and have corresponding technical effects.

[0037] The utility model also provides a space flight engine. The space flight engine of the embodiment at least includes the swinging hose in any one of the above embodiments.

[0038] The swinging hose and the space flight engine of the utility model adopt the composite reinforcing ring, greatly increase the pressure-bearing capacity of the swinging hose, improve the service life of the swinging hose, and reduce the weight and manufacturing cost of the swinging hose and the space flight engine.

[0039] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A swing hose, characterized in that, At least including: The bellows, connecting parts, and reinforcing rings periodically disposed on the bellows, the reinforcing rings being embedded in the troughs of the bellows; the connecting parts are disposed at both ends of the bellows for docking with external equipment.

2. The swing hose according to claim 1, characterized in that, The reinforcing ring includes at least an aramid fiber layer and a carbon fiber layer, which are cured and formed by ultra-low temperature epoxy resin. The aramid fiber layer is disposed on the outer layer of the reinforcing ring, and the carbon fiber layer is disposed on the inner layer of the reinforcing ring.

3. The swing hose according to claim 2, characterized in that, The thickness of the aramid fiber layer ranges from 0.5 mm to 1 mm.

4. The swing hose according to claim 3, characterized in that, The carbon fiber layer is filled with long fiber winding.

5. The swing hose according to claim 4, characterized in that, The aramid fiber layer is filled with long fibers wound together.

6. The swing hose according to claim 5, characterized in that, The ratio of the carbon fiber layer to the aramid fiber layer is 3:

7.

7. The swing hose according to any one of claims 1 to 6, characterized in that, The reinforcing ring is a solid circular ring structure.

8. The swing hose according to claim 7, characterized in that, The outer ring of the reinforcing ring protrudes from the crest of the bellows.

9. The swing hose according to claim 7, characterized in that, The connecting part is a welded joint that is fixedly installed at both ends of the bellows.

10. An aerospace engine, characterized in that, It includes at least the swing hose as described in any one of claims 1 to 9.

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