CN220488521U

CN220488521U - Vacuum heat-insulating hose

Info

Publication number: CN220488521U
Application number: CN202322213969.4U
Authority: CN
Inventors: 黄斌
Original assignee: Jiangsu Hongqing Gas Equipment Co ltd
Current assignee: Jiangsu Hongqing Gas Equipment Co ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-02-13
Anticipated expiration: 2033-08-17

Abstract

The utility model relates to the technical field of filling hoses, in particular to a vacuum heat-insulating heat-preserving hose which comprises an outer vacuum corrugated pipe and two outer pipes respectively arranged at two ends of the outer vacuum corrugated pipe, wherein the outer pipes are communicated with the inside of the outer vacuum corrugated pipe, inner pipes are fixedly inserted into the two outer pipes, one ends of the inner pipes extend to the outside of the outer pipes, joints are arranged on the inner pipes outside the outer pipes, an inner vacuum corrugated pipe is arranged in the outer vacuum corrugated pipe, two ends of the inner vacuum corrugated pipe are fixedly connected with the inner pipes at two ends respectively, a closed vacuum cavity is formed between the outer vacuum corrugated pipe and the inner vacuum corrugated pipe, the vacuum heat-insulating heat-preserving hose adopts an inner and outer double-layer design of the outer vacuum corrugated pipe and the inner vacuum corrugated pipe, and during operation, the hollow cavity between the outer vacuum corrugated pipe and the inner vacuum corrugated pipe can be vacuumized, gas flows in the inner vacuum corrugated pipe, heat exchange is reduced, and meanwhile, the vacuum heat-insulating hose is high in structural strength and not easy to damage.

Description

Vacuum heat-insulating hose

Technical Field

The utility model relates to the technical field of filling hoses, in particular to a vacuum heat-insulating hose.

Background

The filling hose is a metal hose for filling the inside of a gas cylinder with some rare gases such as hydrogen, helium, nitrogen, argon, helium, etc., or oxygen and carbon dioxide, and has excellent flexibility, repeated bending property, corrosion resistance, high temperature resistance, bending resistance, tensile property and lateral pressure resistance, and is widely used in various industries, wherein the metal high pressure filling hose is often put into use due to its excellent characteristics.

The existing filling hose is generally made of metal materials, has poor heat insulation effect, is easy to gasify when low-temperature liquid gas passes through a pipeline, and is difficult to meet the actual use requirement.

Disclosure of Invention

The utility model aims to provide a vacuum heat-insulating hose so as to solve the problem that the conventional filling hose provided in the background art is poor in heat-insulating effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the vacuum heat insulation hose comprises an outer vacuum corrugated pipe and two outer pipes which are respectively arranged at two ends of the outer vacuum corrugated pipe, wherein the outer pipes are communicated with the inside of the outer vacuum corrugated pipe, the two outer pipes are fixedly inserted into the inner pipes, one ends of the inner pipes extend to the outside of the outer pipes, joints are arranged on the inner pipes outside the outer pipes, the inner parts of the outer vacuum corrugated pipes are provided with inner vacuum corrugated pipes, two ends of the inner vacuum corrugated pipes are respectively fixedly connected with the inner pipes at two ends, a closed vacuum cavity is formed between the outer vacuum corrugated pipes and the inner vacuum corrugated pipes, and any one of the outer pipes is provided with a vacuumizing port.

Further, a metal braiding layer is sleeved on the outer side wall of the outer vacuum corrugated pipe.

Further, the outer tube includes end to end's installation section, supporting section and changeover portion, the radius of installation section is greater than the radius of supporting section, outer vacuum bellows is fixed on the inside wall of installation section, and the one end butt of outer vacuum bellows is in the inside wall of installation section and supporting section junction, the changeover portion is the toper structure that the radius dwindles gradually, and the changeover portion is kept away from the one end and the inner tube lateral wall fixed connection of supporting section.

Further, the outer side wall of the joint is provided with patterns.

Further, the joint is rotationally connected with the inner pipe through an annular sliding rail, and an inner thread is arranged on the inner side wall of the joint.

Further, a heat preservation and insulation layer is arranged between the outer vacuum corrugated pipe and the inner vacuum corrugated pipe.

Compared with the prior art, the utility model has the beneficial effects that: the vacuum heat insulation and preservation hose adopts the inner and outer double-layer design of the outer vacuum corrugated pipe and the inner vacuum corrugated pipe, the cavity between the outer vacuum corrugated pipe and the inner vacuum corrugated pipe can be vacuumized during working, gas flows in the inner vacuum corrugated pipe, heat exchange is reduced, low-temperature liquid gas is guaranteed not to be gasified when passing through a pipeline, the vacuum heat insulation and preservation hose is suitable for filling of mediums such as oxygen, nitrogen, chlorine and ammonia, and meanwhile, the vacuum heat insulation and preservation hose is high in structural strength and not easy to damage and leak.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model.

In the figure: 1. an outer tube; 101. a mounting section; 102. a support section; 103. a transition section; 2. an inner tube; 3. a joint; 4. an outer vacuum bellows; 5. an inner vacuum bellows; 6. a heat preservation and insulation layer; 7. a metal braid; 8. and (5) vacuumizing the mouth.

Detailed Description

In the following description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, in the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-2, an embodiment of the present utility model is provided: the vacuum heat insulation hose comprises an outer vacuum corrugated pipe 4 and two outer pipes 1 respectively arranged at two ends of the outer vacuum corrugated pipe 4, wherein the outer pipes 1 are communicated with the inside of the outer vacuum corrugated pipe 4, the inner parts of the two outer pipes 1 are fixedly inserted with inner pipes 2, one ends of the inner pipes 2 extend to the outside of the outer pipes 1, joints 3 are arranged on the inner pipes 2 outside the outer pipes 1, patterns are arranged on the outer side walls of the joints 3, the joints 3 can be particularly in a hexagonal nut shape, the wrench is convenient to use for mounting and dismounting, in the embodiment, the joints 3 are rotationally connected with the inner pipes 2 through annular sliding rails, internal threads are arranged on the inner side walls of the joints 3, the joints 3 can be welded and fixed with the inner pipes 2 according to actual needs, and the materials of the joints 3 can be particularly SS316 38304;

the outer tube 1 comprises a mounting section 101, a supporting section 102 and a transition section 103 which are connected end to end, the radius of the mounting section 101 is larger than that of the supporting section 102, the outer vacuum bellows 4 is fixed on the inner side wall of the mounting section 101, one end of the outer vacuum bellows 4 is abutted against the inner side wall of the joint of the mounting section 101 and the supporting section 102, the transition section 103 is of a conical structure with gradually reduced radius, and one end of the transition section 103 far away from the supporting section 102 is fixedly connected with the outer side wall of the inner tube 2, and the connection strength is high;

an inner vacuum corrugated pipe 5 is arranged in the outer vacuum corrugated pipe 4, the outer vacuum corrugated pipe 4 and the inner vacuum corrugated pipe 5 are made of SS304, two ends of the inner vacuum corrugated pipe 5 are fixedly connected with the inner pipes 2 at two ends respectively, a closed vacuum cavity is formed between the outer vacuum corrugated pipe 4 and the inner vacuum corrugated pipe 5, a vacuumizing port 8 is arranged on any outer pipe 1, after the joint 3 is fixedly installed during operation, gas enters the inner vacuum corrugated pipe 5 through the inner pipes 2 for transmission, and heat transfer can be reduced due to the fact that vacuum is arranged between the outer vacuum corrugated pipe 4 and the inner vacuum corrugated pipe 5, and low-temperature liquid gas is prevented from gasifying when passing through the pipelines;

a heat-insulating layer 6 is arranged between the outer vacuum corrugated pipe 4 and the inner vacuum corrugated pipe 5, and the heat-insulating layer 6 can be polyurethane heat-insulating paper;

the outer side wall of the outer vacuum corrugated pipe 4 is sleeved with the metal braiding layer 7, so that the strength of the hose can be further improved, and the service life of the hose can be prolonged.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Vacuum insulation hose, its characterized in that: including outer vacuum bellows (4) and set up two outer tubes (1) at outer vacuum bellows (4) both ends respectively, outer tube (1) and the inside intercommunication of outer vacuum bellows (4), two the inside of outer tube (1) is all interlude and is fixed with inner tube (2), and the one end of inner tube (2) extends to the outside of outer tube (1), all be provided with on outer tube (1) outside inner tube (2) and connect (3), the inside of outer vacuum bellows (4) is provided with interior vacuum bellows (5), and the both ends of interior vacuum bellows (5) respectively with the inner tube (2) fixed connection at both ends, form airtight vacuum chamber between outer vacuum bellows (4) and the interior vacuum bellows (5), arbitrary be provided with vacuum-pumping mouth (8) on outer tube (1).

2. The vacuum insulation hose according to claim 1, wherein: the outer side wall of the outer vacuum corrugated pipe (4) is sleeved with a metal braiding layer (7).

3. The vacuum insulation hose according to claim 1, wherein: outer tube (1) are including installation section (101), support section (102) and changeover portion (103) of head and tail connection, the radius of installation section (101) is greater than the radius of support section (102), outer vacuum bellows (4) are fixed on the inside wall of installation section (101), and the one end butt of outer vacuum bellows (4) is in the inside wall of installation section (101) and support section (102) junction, changeover portion (103) is the toper structure that the radius dwindles gradually, and changeover portion (103) keep away from the one end of support section (102) and inner tube (2) lateral wall fixed connection.

4. The vacuum insulation hose according to claim 1, wherein: the outer side wall of the joint (3) is provided with patterns.

5. The vacuum insulation hose according to claim 4, wherein: the connector (3) is rotationally connected with the inner pipe (2) through an annular sliding rail, and an inner thread is arranged on the inner side wall of the connector (3).

6. The vacuum insulation hose according to claim 4, wherein: a heat preservation and insulation layer (6) is arranged between the outer vacuum corrugated pipe (4) and the inner vacuum corrugated pipe (5).