CN215950633U - Low-temperature umbilical cord hose structure - Google Patents
Low-temperature umbilical cord hose structure Download PDFInfo
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- CN215950633U CN215950633U CN202121569076.8U CN202121569076U CN215950633U CN 215950633 U CN215950633 U CN 215950633U CN 202121569076 U CN202121569076 U CN 202121569076U CN 215950633 U CN215950633 U CN 215950633U
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Abstract
The utility model discloses a low-temperature umbilical cord hose structure which is used for providing a channel for medium circulation between the upper part of an arrow and the lower part of the arrow. The low-temperature umbilical cord hose comprises a main pipe structure with elasticity and a flexible heat insulation structure, wherein the flexible heat insulation structure is arranged on the circumferential outer surface of the main pipe structure in a winding mode and is used for matching with the main pipe structure to provide a frost growth carrier during low-temperature through flow, one end of the main pipe structure is used for being connected with a low-temperature hard pipe on a launching device, and the other end of the main pipe structure is used for being connected with a rocket interface. Compared with the prior art, the umbilical cord hose has the advantages of stable structure, remarkable heat insulation effect, good follow-up property and the like.
Description
Technical Field
The utility model relates to the field of liquid rockets, in particular to a low-temperature umbilical cord hose structure.
Background
With the rapid development of the aerospace industry, all the technologies related to the rocket field also realize the rapid advance. Rockets are currently the primary vehicles for launching satellites into space, and therefore, the continued reduction of rocket manufacturing and launch costs is a pursuit goal of large commercial space companies.
Part of the liquid rockets need to be pre-filled with cryogenic liquid through a cryogenic umbilical hose before launch. For example, the low-temperature umbilical hose can be used for conveying low-temperature propellant to a rocket storage tank in the process of preparing liquid rocket launching in a three-dimensional launching mode, one end of the low-temperature umbilical hose is usually connected with a low-temperature hard pipe on a launching device, the other end of the low-temperature umbilical hose is connected with a rocket interface, and the low-temperature umbilical hose is in a catenary state in the propellant filling process so as to adapt to the change of the relative positions of the launching device and the rocket.
When the launching device is close to the rocket, the catenary span of the low-temperature umbilical cord hose is small, and the bottom bending radius of the low-temperature umbilical cord hose is small; when the launching device is far away from the rocket, the catenary span of the hose at the lower part of the low-temperature umbilical cord hose is increased, and the bending radius of the bottom of the low-temperature umbilical cord is increased. Because the low-temperature umbilical hose needs to meet the characteristics of medium compatibility, light weight, small bending radius and dynamic change, a single-layer metal hose form is usually adopted. When the low-temperature umbilical hose is used for filling the low-temperature liquid propellant, the outside of the low-temperature umbilical hose can be coated by the heat-insulating material, however, the heat-insulating material coated on the outer side of the bending section of the low-temperature umbilical hose can be hardened due to too low temperature, so that the low-temperature umbilical hose is not easy to deform, and the reliable conveying of the low-temperature propellant is influenced. In addition, in the event of a deformation of the low temperature umbilical hose, the integrity of the insulation material may be compromised, resulting in cracking of the insulation material and, in turn, compromising the insulation effectiveness.
Therefore, how to provide a low-temperature umbilical hose structure with reasonable design, stable structure and remarkable heat insulation effect is the problem to be solved at present.
Disclosure of Invention
The utility model aims to provide a low-temperature umbilical cord hose structure which has the advantages of reasonable design, stable structure, remarkable heat insulation effect and the like.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a low temperature umbilical cord hose structure, low temperature umbilical cord hose are used for providing the passageway for the medium circulation between on the arrow and under the arrow, contain and have elastic main pipe structure and flexible thermal-insulated structure, flexible thermal-insulated structure winding ground sets up be responsible for the circumference surface of structure, flexible thermal-insulated structure is used for being responsible for the inside low temperature of structure and cooperates when through-flow and provide the frost growth carrier, wherein, be responsible for structure one end and be used for being connected with the last low temperature hard tube of emitter, the other end is used for with rocket interface connection.
Furthermore, the main pipe structure comprises a first side pipe, a second side pipe and a bent pipe, two ends of the bent pipe are respectively connected with the first side pipe and the second side pipe, and the first side pipe, the second measuring pipe and the bent pipe are designed in an integrated mode.
Further, the flexible heat insulation structure is arranged on the outer surface of the main pipe structure in a clinging mode.
Furthermore, the two ends of the main pipe structure are respectively fixed on the two sides of the main pipe structure through the binding belts.
Furthermore, the circumferential outer surfaces of the two ends of the main pipe structure are also provided with heat-proof layers and are respectively fixed on the surface of the main pipe structure through binding belts.
Furthermore, the surface of the flexible heat insulation structure is provided with first strip holes, one or more first strip holes are arranged along the circumferential surface of the flexible heat insulation structure to form a circumferential hole group, and the circumferential hole groups are arranged at intervals along the axial direction of the flexible heat insulation structure.
Furthermore, flexible thermal-insulated structure surface is equipped with the rectangular hole of second, the rectangular hole of second is for following flexible thermal-insulated structure axial extension's curved hole, and follow flexible thermal-insulated structure axial direction, the rectangular hole of second is located two adjacent between the circumference punch combination.
Furthermore, the radian of the second strip-shaped hole is phi, and phi is not less than 1/3 pi and not more than 1/2 pi.
Furthermore, the inner diameter of the flexible heat insulation structure is A, wherein A is not less than 12mm and not more than 18mm, the wall thickness of the flexible heat insulation structure is B, and B is not less than 0.2mm and not more than 0.8 mm.
Furthermore, the flexible heat insulation structure is tubular and is made of fluoroplastic.
Compared with the prior art, the utility model has the beneficial effects that: the low-temperature umbilical cord hose structure consists of an elastic main pipe structure and a flexible heat insulation structure. Through set up the circumference surface at the structure of being responsible for at flexible thermal-insulated structure winding ground, flexible thermal-insulated structure is used for cooperating when being responsible for the inside low temperature through-flow of structure and provides the frost growth carrier, on the one hand because thermal-insulated structure can increase thermal-insulated structure toughness for flexible thermal-insulated structure, makes things convenient for it to buckle. On the other hand because flexible thermal-insulated structure twinedly sets up at the circumference surface of being responsible for the structure, can increase the area of contact of flexible thermal-insulated structure and being responsible for the structure for flexible thermal-insulated structure and being responsible for structure zonulae occludens make things convenient for the adhesion of frost, and then play thermal-insulated effect. In addition, the flexible heat insulation structure is arranged in a winding mode, so that the heat insulation thickness of the flexible heat insulation structure can be increased, namely, the influence of external temperature on the main pipe structure is reduced, and therefore the safe and stable circulation of low-temperature media in the main pipe structure is guaranteed. The whole structure has the advantages of reasonable design, stable structure, obvious heat insulation effect and the like.
Drawings
FIG. 1 is a schematic structural diagram of a low temperature umbilical cord hose structure of the present invention;
FIG. 2 is a perspective view of a flexible insulation structure of the present invention;
FIG. 3 is a top view of the flexible insulation structure of the present invention;
FIG. 4 is a left side view of the flexible insulation structure of the present invention;
FIG. 5 is a front view of the flexible insulation structure of the present invention.
Description of reference numerals:
1 main pipe structure 2 flexible heat insulation structure
3 first side pipe 4 second side pipe
5 bending tube 6 heat-proof layer
7 first elongated hole 8 second elongated hole
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the utility model, reference will now be made to the drawings and detailed description, wherein there are shown in the drawings and described in detail, various modifications of the embodiments described herein, and other embodiments of the utility model will be apparent to those skilled in the art.
The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, the terms "first," "second," …, etc., do not denote any order or sequence, nor are they used to limit the present invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. Generally, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.
Referring to fig. 1, 2, 3, 4 and 5, embodiments of the present invention provide a low temperature umbilical hose structure for providing a passage for the medium flow between the space above and below the arrow. The low-temperature umbilical hose comprises a main pipe structure 1 with elasticity and a flexible heat insulation structure 2, wherein the flexible heat insulation structure 2 is arranged on the circumferential outer surface of the main pipe structure 1 in a winding mode. The flexible heat insulation structure 2 is used for providing a frost growth carrier in a matching manner when the interior of the main pipe structure 1 is subjected to low-temperature through flow, wherein one end of the main pipe structure 1 is used for being connected with a low-temperature hard pipe on a launching device, and the other end of the main pipe structure 1 is used for being connected with a rocket interface.
Specifically, the method comprises the following steps: the low-temperature umbilical cord hose structure is composed of an elastic main pipe structure 1 and a flexible heat insulation structure 2. The flexible heat insulation structure 2 is arranged on the circumferential outer surface of the main pipe structure 1 in a winding manner, and the flexible heat insulation structure 2 is used for providing a frost growth carrier in a matching manner when low-temperature through flow is conducted in the main pipe structure 1, so that on one hand, the heat insulation structure is a flexible heat insulation structure, so that the toughness of the heat insulation structure can be increased, and the heat insulation structure is convenient to bend; on the other hand because flexible thermal-insulated structure twinedly sets up at the circumference surface of being responsible for structure 1, can increase flexible thermal-insulated structure 2 and be responsible for the area of contact of structure 1 for flexible thermal-insulated structure 2 makes things convenient for the adhesion of frost with being responsible for structure 1 zonulae occludens, and then plays better thermal-insulated effect. Simultaneously because flexible thermal-insulated structure 2 twines to set up the thermal-insulated thickness that can increase flexible thermal-insulated structure 2, and then reduces the influence of outside temperature to being responsible for structure 1 to guarantee to be responsible for the interior low temperature medium safety and stability circulation of structure 1. The whole structure has the advantages of reasonable design, stable structure, obvious heat insulation effect and the like.
In the present embodiment, as shown in fig. 1, the main pipe structure 1 includes a first side pipe 3, a second side pipe 4, and a bent pipe 5, and the first side pipe 3 and the second side pipe 4 are connected to both ends of the bent pipe 5, respectively. In order to make the first side tube 3, the second side tube 4 and the bending tube 5 connected more tightly and fixed more firmly, for example, the first side tube 3, the second side tube 4 and the bending tube 5 are designed as an integral molding, and the process is not described here.
It should be noted that, in order to make the flexible heat insulation structure 2 and the main pipe structure 1 tightly connected and prevent the flexible heat insulation structure 2 from freely moving on the surface of the main pipe structure 1, for example, the flexible heat insulation structure 2 is tightly arranged on the outer surface of the main pipe structure 1, and the tight arrangement can increase friction force, so as to prevent the flexible heat insulation structure 2 from generating an overall sliding phenomenon and ensure a heat insulation effect on the low-temperature umbilical cord hose.
Further, in order to guarantee that flexible thermal-insulated structure 2 is fixed firm, avoid winding flexible thermal-insulated structure 2 that sets up and scatter to both ends because of fixed insecure, for example, at the both ends of being responsible for structure 1, flexible thermal-insulated structure 2 is fixed in the both sides of being responsible for structure 1 through the ribbon respectively. The present embodiment is exemplified by a ribbon, and in practical application, two ends of the flexible heat insulation structure 2 can be wrapped by the heat insulation protective layer and fixed on two sides of the main pipe structure 1.
It should be particularly noted that, as shown in fig. 1, 2 and 3, in order to improve the heat insulating effect of the primary pipe structure 1, for example, heat-proof layers 6 are further provided on the circumferential outer surfaces of both ends of the primary pipe structure 1. Meanwhile, in order to firmly fix the heat-shielding layer 6 to the main pipe structure 1, for example, the heat-shielding layer 6 may be fixed to the surface of the main pipe structure 1 by a tie.
In addition, after the inside low temperature liquid medium that passes through of being responsible for structure 1, be responsible for the surface of structure 1 and can frost (outside steam meets the condensation knot), and the frost layer can be as the insulating layer, and then avoids the outside to be responsible for the inside temperature of structure 1 and influence. In order to increase the area of the frost layer adhering to the flexible thermal insulation structure 2 and at the same time reduce the frost layer falling off, for example, the surface of the flexible thermal insulation structure 2 is provided with a first elongated hole 7. For example, one or more first elongated holes 7 are provided along the circumferential surface of the flexible insulation structure 2, constituting a circumferential group of holes. In addition, in order to attach more frost layers (frost volume) to the flexible heat insulation structure 2, the heat insulation effect is increased, for example, the plurality of circumferential hole groups are arranged at intervals along the axial direction of the flexible heat insulation structure 2, and by increasing the number of the circumferential hole groups, the frost layers can be ensured to be uniformly attached to the surface of the flexible heat insulation structure 2, so that the heat insulation effect is improved.
In addition, in order to facilitate bending of the flexible thermal insulation structure 2, it is convenient to fix the flexible thermal insulation structure 2 to the main pipe structure 1 while increasing the attachment area of the frost layer, for example, the surface of the flexible thermal insulation structure 2 is provided with a second elongated hole 8. The second elongated hole 8 may be a curved hole extending axially along the flexible thermal insulation structure 2 (i.e. the cross section of the second elongated hole is a curved structure in the direction perpendicular to the axis of the flexible thermal insulation structure), and the second elongated hole 8 is located between two adjacent circumferential hole groups along the axial direction of the flexible thermal insulation structure 2. The second rectangular hole 8 can be so that flexible thermal-insulated structure 2 easily with be responsible for the laminating of structure 1 on the one hand, on the other hand easily the hydrone in the air gets into flexible thermal-insulated structure 2 inside for the hydrone condenses, and then plays thermal-insulated effect.
In the present embodiment, in order to facilitate the bending of the flexible thermal insulation structure 2 and simultaneously avoid the breakage phenomenon of the flexible thermal insulation structure 2, for example, the radian of the second elongated hole is phi, and 1/3 pi is less than or equal to phi is less than or equal to 1/2 pi.
In the present embodiment, when the inner diameter of the flexible heat insulating structure 2 is 13mm, 14mm, or 15mm, the frost layer can be firmly attached to the flexible heat insulating structure 2. Further research shows that when the wall thickness of the flexible heat insulation structure 2 is 0.2mm, 0.3mm or 0.4mm, the frost layer is more firmly attached to the flexible heat insulation structure 2 and is not easy to fall off. Through a large number of simulation experiments, the inner diameter of the flexible heat insulation structure 2 is A, when the requirement that A is more than or equal to 12mm and is less than or equal to 18mm is met, the wall thickness of the flexible heat insulation structure 2 is B, when the requirement that B is more than or equal to 0.2mm and is less than or equal to 0.8mm is met, the attachment of a frost layer on the flexible heat insulation structure 2 is facilitated, and when the flexible heat insulation structure 2 is bent along with the main pipe structure 1, the falling of the frost layer can be reduced.
It is particularly worth mentioning that in order to reduce the weight of the flexible insulation structure 2 and at the same time facilitate the winding of the flexible insulation structure 2 around the surface of the host tubular structure 1, the flexible insulation structure 2 is, for example, tubular. In addition, in order to improve the heat insulation effect of the flexible heat insulation structure 2, the flexible heat insulation structure 2 may be made of fluoroplastic, such as PTFE, PCTFE, and the like, which has good low-temperature toughness and a thermal expansion coefficient greater than that of stainless steel material, and can be better attached to the main pipe structure by shrinkage at low temperature. In the present embodiment, for example, the heat transfer coefficient of the selected fluoroplastic is less than 0.25W/(m · K), and the loss of refrigeration capacity can be prevented.
When a low-temperature medium flows in the low-temperature umbilical hose, the flexible heat insulation structure 2 is tightly attached to the main pipe structure 1 through contraction along with the transmission of pipe wall cold quantity, meanwhile, water molecules in the air are cooled and condensed, a frost layer is formed on the surface of the main pipe structure 1, the inside of the flexible heat insulation structure 2 and between adjacent pipe walls, the heat conductivity coefficient is gradually reduced by the frost layer until the temperature is stabilized to be 0.045W/(m.K), the heat insulation effect is further improved, and the safe conveying of a low-temperature propellant in the umbilical hose is ensured. In the preparation process of launching a carrier rocket, when a launching device is far away from the rocket, the catenary span of the low-temperature umbilical cord hose is increased, the flexible heat insulation structure 2 deforms along with the stretching of the main pipe structure 1, the deformation of the main pipe structure 1 cannot be limited except that a small amount of frost layer falls (the heat insulation effect is not influenced), and the follow-up property of the low-temperature umbilical cord hose in the liquid propellant filling process is further improved.
The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a low temperature umbilical hose structure, low temperature umbilical hose are used for providing the passageway for the medium circulation between on the arrow and under the arrow, its characterized in that: contain and have elastic main pipe structure and flexible thermal-insulated structure, flexible thermal-insulated structure winding ground sets up the circumference surface of being responsible for the structure, flexible thermal-insulated structure is used for being responsible for the cooperation when the inside low temperature through-flow of structure provides the frost growth carrier, wherein, be responsible for structure one end be used for with the launching device on the low temperature hard tube be connected, the other end be used for with rocket interface connection.
2. The cryogenic umbilical hose structure of claim 1, wherein: the main pipe structure comprises a first side pipe, a second side pipe and a bent pipe, wherein two ends of the bent pipe are respectively connected with the first side pipe and the second side pipe, and the first side pipe, the second side pipe and the bent pipe are designed in an integrated forming mode.
3. The cryogenic umbilical hose structure of claim 1, wherein: the flexible heat insulation structure is arranged on the outer surface of the main pipe structure in a clinging mode.
4. The cryogenic umbilical hose structure of claim 3, wherein: the flexible heat insulation structure is fixed on two sides of the main pipe structure through binding belts respectively at two ends of the main pipe structure.
5. The cryogenic umbilical hose structure of claim 1, wherein: the circumference surface of being responsible for the structure both ends still is equipped with the heat protection layer, and fixes respectively through the ribbon be responsible for the structure surface.
6. The cryogenic umbilical hose structure of claim 1, wherein: the flexible heat insulation structure is characterized in that a first strip hole is formed in the surface of the flexible heat insulation structure, one or more first strip holes are formed in the circumferential surface of the flexible heat insulation structure to form a circumferential hole group, and the circumferential hole groups are distributed at intervals in the axial direction of the flexible heat insulation structure.
7. The cryogenic umbilical hose structure of claim 6, wherein: the flexible heat insulation structure surface is equipped with the rectangular hole of second, the rectangular hole of second is for following flexible heat insulation structure axial extension's curved hole, and follow flexible heat insulation structure axial direction, the rectangular hole of second is located two adjacent between the circumference punch combination.
8. The cryogenic umbilical hose structure of claim 7, wherein: the radian of the second strip-shaped hole is phi, and phi is not less than 1/3 pi and not more than 1/2 pi.
9. The cryogenic umbilical hose structure of claim 1, wherein: the inner diameter of the flexible heat insulation structure is A, wherein A is not less than 12mm and not more than 18mm, the wall thickness of the flexible heat insulation structure is B, and B is not less than 0.2mm and not more than 0.8 mm.
10. The cryogenic umbilical hose structure of any of claims 1 to 9, wherein: the flexible heat insulation structure is tubular and is made of fluoroplastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121569076.8U CN215950633U (en) | 2021-07-12 | 2021-07-12 | Low-temperature umbilical cord hose structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121569076.8U CN215950633U (en) | 2021-07-12 | 2021-07-12 | Low-temperature umbilical cord hose structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215950633U true CN215950633U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121569076.8U Active CN215950633U (en) | 2021-07-12 | 2021-07-12 | Low-temperature umbilical cord hose structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215950633U (en) |
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2021
- 2021-07-12 CN CN202121569076.8U patent/CN215950633U/en active Active
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