CN211039974U - Flexible pressure-resistant stainless steel corrugated hose for gas delivery - Google Patents

Abstract

The utility model relates to a flexible pressure-resistant stainless steel corrugated hose for gas delivery, which comprises a hose body, wherein the hose body is provided with an outer hose body and an inner hose body; a cavity is arranged between the outer pipe body and the inner pipe body; the ends of the outer pipe body and the inner pipe body are fixedly connected; the surfaces of the outer pipe body and the inner pipe body are covered with energy absorbing layers; a buffer column is arranged in the cavity; a strip-shaped reinforcing bulge is arranged on the inner side wall of the inner pipe body; reinforcing fillers are filled in the cavity; the outer pipe body and the inner pipe body are both formed by expansion and compression. The utility model discloses the double-deck design of well body, upper and lower body adopt the same technology and size, in the course of the work, can not influence the degree of freedom each other. Simultaneously, through set up all kinds of withstand voltage buffer material in last body, die cavity and body down, utilize all kinds of material characteristics, through energy-absorbing, buffering and reinforced mode, very big promotion the withstand voltage degree of body.

Description

Flexible pressure-resistant stainless steel corrugated hose for gas delivery

Technical Field

The utility model relates to a corrugated hose, concretely relates to flexible withstand voltage type gas is carried and is used stainless steel corrugated hose belongs to bellows technical field.

Background

Due to the structure and material characteristics of the corrugated pipe, the degree of freedom between two ends of the corrugated pipe is high, so that the corrugated pipe has a key role in the fields of gas-liquid conveying, parameter detection of instruments and meters and the like. However, the above advantages also become a drawback of the bellows during use. Because the wall of the corrugated pipe is thin, the sensitivity is high, and when the pressure in the pipe is increased, the pipe body is easy to crack. In the prior art, the external pressure compensator is mainly used for applying pressure to the pipe wall of the corrugated pipe from the outside to achieve balance of internal pressure and external pressure, and the mode can be only used under the condition that the length of the corrugated pipe is short. The technology for improving the pressure resistance of the corrugated pipe body must consider the degree of freedom of the corrugated pipe and cannot greatly lose the degree of freedom. Therefore, it is necessary to design a bellows having both a degree of freedom and a pressure resistance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the flexible pressure-resistant stainless steel corrugated hose for gas conveying is excellent in pressure resistance, high in safety and simple and reasonable in structure.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows: a flexible pressure-resistant stainless steel corrugated hose for conveying fuel gas comprises a hose body, a hose body and a hose body, wherein the hose body is provided with an outer hose body and an inner hose body; a cavity is arranged between the outer pipe body and the inner pipe body; the ends of the outer pipe body and the inner pipe body are fixedly connected; the surfaces of the outer pipe body and the inner pipe body are covered with energy absorbing layers; a buffer column is arranged in the cavity; a strip-shaped reinforcing bulge is arranged on the inner side wall of the inner pipe body; the cavity is filled with reinforcing filler.

Preferably, the energy absorption layer is a high-toughness adhesive tape; the two ends of the buffer column are respectively connected to the inner side walls of the outer pipe body and the inner pipe body.

Preferably, the high-toughness rubber strip comprises a polyester film layer coated with an adhesive; and a composite metal layer is arranged between the polyester film layers.

Preferably, the composite metal layer comprises an aluminum layer and a copper layer; the composite metal layer is connected with the polyester film layer through the heat-conducting glue pasting layer.

Preferably, the buffer column is made of polystyrene foam; the section of the buffer column is trapezoidal; the buffer column is hot-melted in the cavity.

Preferably, the belt-shaped reinforcing protrusion is arranged along the circumferential direction of the inner wall of the inner pipe body; a plurality of the belt-shaped reinforcing protrusions are distributed along the axial direction of the inner pipe body.

Preferably, the belt-mounted reinforcing protrusion is a rib.

Preferably, the reinforcing filler is formed by stacking a plurality of layers of glass fiber cloth.

The utility model discloses the double-deck design of well body, upper and lower body adopt the same technology and size, in the course of the work, can not influence the degree of freedom each other. Simultaneously, through set up all kinds of withstand voltage buffer material in last body, die cavity and body down, utilize all kinds of material characteristics, through energy-absorbing, buffering and reinforced mode, very big promotion the withstand voltage degree of body.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic sectional view of the present invention.

In the figure, 1 is a tube body, 2 is an outer tube body, 3 is an inner tube body, 4 is a cavity, 5 is an energy absorption layer, 6 is a buffer column, 7 is a strip-shaped reinforcing bulge, and 8 is a reinforcing filler.

Detailed Description

The terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the person of the invention to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number. While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the present inventive concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.

Referring to fig. 1, a flexible pressure-resistant stainless corrugated hose for gas delivery comprises a hose body 1 having an outer hose body 2 and an inner hose body 3; a cavity 4 is arranged between the outer pipe body 2 and the inner pipe body 3; the ends of the outer pipe body 2 and the inner pipe body 3 are fixedly connected; the surfaces of the outer pipe body and the inner pipe body are covered with energy absorbing layers 5; a buffer column 6 is arranged in the cavity 4; a strip-shaped reinforcing protrusion 7 is arranged on the inner side wall of the inner pipe body 3; the cavity is filled with reinforcing filler 8; the outer pipe body and the inner pipe body are both formed by expansion and compression.

Specifically, the energy absorbing layer 5 made of a high-toughness material provides a certain inward force to the outer pipe body 2 by utilizing the characteristic of good energy absorbing capacity in the plastic deformation and rupture processes, so as to counteract partial or all pressure. The buffer column 6 in the cavity provides flexible connection between the outer pipe body 2 and the inner pipe body 3, and when the pressure in the pipe is increased, the rigid contact between the inner pipe body and the outer pipe body is prevented from being damaged.

Further, the energy absorption layer 5 is a high-toughness adhesive tape; two ends of the buffer column 6 are respectively connected to the inner side walls of the outer pipe body and the inner pipe body.

Specifically, in the present embodiment, the energy absorbing layer 5 is preferably a high-toughness rubber strip.

Further, the high-toughness rubber strip comprises a polyester film layer coated with an adhesive; and a composite metal layer is arranged between the polyester film layers.

Furthermore, the composite metal layer comprises an aluminum layer and a copper layer; the composite metal layer is connected with the polyester film layer through the heat-conducting glue pasting layer.

Specifically, the high-toughness rubber strip in this embodiment uses the composite metal layer, because the temperature will also rise during the pressure increase in the tube, and the composite metal layer formed by lamination is favorable for forming a stepped temperature gradient and for heat transfer in the tube.

And the aluminum and copper are soft in texture, and the aluminum layer and the copper layer after special treatment cannot influence the degree of freedom of the tube body.

Since the corrugated tube surface is not uniform, the energy absorbing layer 5 is preferably provided at the peak and a portion between two peaks in the present embodiment.

Further, the buffer column 6 is made of polystyrene foam; the section of the buffer column 6 is trapezoidal; the buffer column is hot-melted in the cavity 4.

Furthermore, the strip-shaped reinforcing protrusion 7 is arranged along the circumferential direction of the inner wall of the inner pipe body; a plurality of said strip-shaped reinforcing protrusions are distributed axially along the inner tube body 3 at 7.

Furthermore, the belt-shaped reinforcing protrusion 7 is a rib.

Furthermore, the reinforcing filler is formed by stacking a plurality of layers of glass fiber cloth.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides a flexible withstand voltage type gas is carried and is used stainless steel corrugated hose, includes body (1), its characterized in that: the pipe body is provided with an outer pipe body (2) and an inner pipe body (3); a cavity (4) is arranged between the outer pipe body (2) and the inner pipe body (3); the ends of the outer pipe body (2) and the inner pipe body (3) are fixedly connected; the surfaces of the outer pipe body and the inner pipe body are covered with energy absorbing layers (5); a buffer column (6) is arranged in the cavity (4); a strip-shaped reinforcing bulge (7) is arranged on the inner side wall of the inner pipe body (3); the cavity is filled with a reinforcing filler (8); the outer pipe body and the inner pipe body are both formed by expansion and compression.

2. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 1, wherein: the energy absorption layer (5) is a high-toughness adhesive tape; two ends of the buffer column (6) are respectively connected to the inner side walls of the outer pipe body and the inner pipe body.

3. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 2, wherein: the high-toughness adhesive tape comprises a polyester film layer coated with an adhesive; and a composite metal layer is arranged between the polyester film layers.

4. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 3, wherein: the composite metal layer comprises an aluminum layer and a copper layer; the composite metal layer is connected with the polyester film layer through the heat-conducting glue pasting layer.

5. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 2, wherein: the buffer column (6) is made of polystyrene foam plastics; the section of the buffer column (6) is trapezoidal; the buffer column is hot-melted in the cavity (4).

6. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 1, wherein: the strip-shaped reinforcing protrusion (7) is arranged along the circumferential direction of the inner wall of the inner pipe body; a plurality of the strip-shaped reinforcing bulges (7) are axially distributed along the inner pipe body (3).

7. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 6, wherein: the strip-shaped reinforcing protrusion (7) is a convex rib.

8. The flexible pressure-resistant stainless steel corrugated hose for gas delivery according to claim 1, wherein: the reinforced filler is formed by stacking a plurality of layers of glass fiber cloth.

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