CN217130697U

CN217130697U - External pressure axial corrugated compensator

Info

Publication number: CN217130697U
Application number: CN202220215024.9U
Authority: CN
Inventors: 陈宏宾; 常华军; 洪厚祥; 王小霞; 王永珊; 吴郡; 张宝根; 王素芹; 卞珍凤; 常华东; 钱谷; 张庆才; 李磊; 仇加红; 李晓梅
Original assignee: Taizhou Wantong Bellows Co ltd
Current assignee: Taizhou Wantong Bellows Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-05
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses an external pressure axial type corrugated compensator relates to pipeline compensation technical field, including outer sleeve, end pipe and extension pipe, the end pipe with the first end fixed connection of outer sleeve, the one end of extension pipe by the second end of outer sleeve stretch into, and can for the outer sleeve slides, still including setting up the bellows subassembly between outer sleeve and extension pipe, the one end of bellows subassembly with the outer wall fixed connection of extension pipe, the other end with the second end fixed connection of outer sleeve, the bellows subassembly is established including the cover sliding sleeve on the extension pipe is in with setting up respectively two bellows at sliding sleeve's both ends, sliding sleeve's outer wall is equipped with the ring flange, be equipped with a plurality of through-holes that supply the medium circulation on the ring flange. So set up, the ring flange can restrict the radial displacement of sliding sleeve when not restricting the medium circulation, prevents that the sliding sleeve from rocking, has improved external pressure axial type corrugated compensator's structural stability.

Description

External pressure axial corrugated compensator

Technical Field

The utility model relates to a pipeline compensation technical field, more specifically say, relate to an external pressure axial type corrugated compensator.

Background

The bellows compensator belongs to a kind of pipe joint, and is commonly used for compensating axial displacement of a pipeline caused by thermal deformation, mechanical deformation and various mechanical vibrations because the bellows component has axial flexibility. The external pressure axial corrugated compensator is mainly used for compensating axial displacement of a pipeline and can also compensate transverse displacement or combined displacement of the axial displacement and the transverse displacement. The medium pressure of the external pressure axial type bellows compensator acts on the outer surface of the bellows assembly, and the bellows assembly is elongated when the bellows compensator is shortened.

In the prior art, in order to improve the compensation capacity of the external pressure axial type corrugated compensator, the corrugated pipe assembly can be provided with two mutually communicated corrugated pipes which are connected through a middle pipe, and the middle pipe can also generate radial displacement, shake and other conditions when moving, so that the structural stability of the external pressure axial type corrugated compensator is poor.

Therefore, how to solve the problem of poor connection stability of the intermediate pipe of the external pressure axial type corrugated compensator becomes an important technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external pressure axial type corrugated expansion ware to solve between two bellows through the intervalve connection, lead to the problem of external pressure axial type corrugated expansion ware poor stability. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an external pressure axial type corrugated compensator, including outer sleeve, end pipe and extension pipe, the end pipe with the first end fixed connection of outer sleeve, the one end of extension pipe by the second end of outer sleeve stretch into, and can for the outer sleeve slides, still including setting up the outer sleeve with bellows subassembly between the extension pipe, bellows subassembly one end with the outer wall fixed connection of extension pipe, the other end with the second end fixed connection of outer sleeve, bellows subassembly is established including the cover slide sleeve on the extension pipe is in with setting up respectively two bellows at the both ends of slide sleeve, the outer wall of slide sleeve is equipped with the ring flange, be equipped with a plurality of through-holes that supply the medium circulation on the ring flange.

Preferably, both ends of the outer sleeve are provided with annular discs, the end pipe is connected with the annular discs arranged at the first end of the outer sleeve, and one end of the bellows assembly, which is far away from the end pipe, is connected with the annular discs arranged at the second end of the outer sleeve.

Preferably, the outer wall of one end of the extension pipe close to the end pipe and the annular disc of the second end of the outer sleeve are both provided with a connecting pipe, and one end of the corrugated pipe far away from the sliding sleeve is connected with the connecting pipe.

Preferably, a limiting sliding mechanism is arranged between the outer wall of the extension pipe and the inner wall of the outer sleeve to limit the sliding direction of the extension pipe to be the axial direction of the outer sleeve.

Preferably, the limit sliding mechanism comprises a sliding block arranged on one of the extension pipe and the outer sleeve and a sliding groove arranged on the other and matched with the sliding block, and the extending direction of the sliding groove is consistent with the axial direction of the outer sleeve.

Preferably, the sliding block is a sliding plate fixedly arranged on the outer wall of the extension pipe, the inner wall of the outer sleeve is provided with two limiting plates which are arranged in parallel and extend along the axial direction of the outer sleeve, and the sliding plate extends into a gap between the two limiting plates.

Preferably, the through holes are arc-shaped holes, and the arc-shaped holes are uniformly distributed along the circumferential direction of the flange plate.

Preferably, a flow guide pipe is further arranged in the end pipe, the fixed end of the flow guide pipe is fixedly connected with the inner wall of the end pipe, and the free end of the flow guide pipe extends into the extension pipe.

Preferably, a heat insulation cylinder is sleeved on the outer periphery of the outer sleeve, and heat insulation filler is arranged between the heat insulation cylinder and the outer sleeve.

Preferably, the heat insulation filler comprises high-temperature-resistant superfine glass wool.

The utility model provides an among the technical scheme, external pressure axial type ripple compensator includes outer sleeve, end pipe, extension pipe and bellows subassembly, and the first end fixed connection of end pipe and outer sleeve, extension pipe are held by the second of outer sleeve and are stretched into, and the bellows subassembly cover is established on the outer wall of extension pipe, and is set up in the outer sleeve. The bellows assembly acts between the extension tube and the second end of the outer sleeve. The corrugated pipe assembly comprises a sliding sleeve sleeved on the outer wall of the extension pipe and two corrugated pipes respectively arranged at two ends of the sliding sleeve, and the outer wall of the sliding sleeve is provided with a flange plate with a plurality of through holes. So set up, the periphery at the extension tube is established to the sliding sleeve cover, is equipped with the ring flange between the inner wall of sliding sleeve and outer sleeve, and the through-hole on the ring flange supplies the medium circulation, and the ring flange can restrict the radial displacement of sliding sleeve when not restricting the medium circulation, prevents that the sliding sleeve from rocking, has improved the structural stability of external pressure axial type corrugated compensator.

Drawings

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

Fig. 1 is a schematic structural diagram of an external pressure axial type corrugated compensator in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the sliding sleeve and the flange plate according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a limiting sliding mechanism in an embodiment of the present invention.

In the figure:

1-outer sleeve, 11-annular disc, 2-end pipe, 3-extension pipe, 4-bellows assembly, 41-sliding sleeve, 42-bellows, 43-flange plate, 431-through hole, 5-connecting pipe, 6-limiting sliding mechanism, 61-sliding block, 62-sliding groove, 63-limiting plate, 7-heat insulation cylinder, 8-heat insulation filler and 9-guide pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An object of the present embodiment is to provide an external pressure axial type corrugated compensator, which solves the problem of poor stability of the external pressure axial type corrugated compensator caused by the connection between two corrugated pipes through an intermediate pipe.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-3, in the present embodiment, the external pressure axial type corrugated compensator includes an outer sleeve 1, an end pipe 2, an extension pipe 3 and a corrugated pipe assembly 4, wherein an end of the end pipe 2 is fixedly connected to a first end of the outer sleeve 1, one end of the extension pipe 3 extends into the outer sleeve 1 from a second end of the outer sleeve 1, the extension pipe 3 can slide in the outer sleeve 1 along an axial direction of the outer sleeve 1, the corrugated pipe assembly 4 is sleeved on an outer wall of the extension pipe 3, and is located the inside of outer sleeve 1, bellows subassembly 4's one end and the outer wall fixed connection of extension pipe 3, the other end and the second end fixed connection of outer sleeve 1, bellows subassembly 4 is including the sliding sleeve 41 of cover setting on the outer wall of extension pipe 3 and set up two bellows 42 at the both ends of sliding sleeve 41 respectively, and the outer wall of sliding sleeve 41 is equipped with ring flange 43, is equipped with a plurality of through-holes 431 that supply the medium circulation on ring flange 43.

When the pipeline is displaced axially, the extension pipe 3 is relatively close to or relatively far away from the end pipe 2 due to the axial flexibility of the bellows assembly 4. So set up, there is the pipeline medium between the outer wall of bellows subassembly 4 and the inner wall of outer sleeve 1, the periphery at extension pipe 3 is established to sliding sleeve 41 cover, be equipped with ring flange 43 between the inner wall of sliding sleeve 41 and outer sleeve 1, through-hole 431 on the ring flange 43 supplies the medium circulation, ring flange 43 can restrict sliding sleeve 41 and produce radial displacement when not restricting the medium circulation, prevents that sliding sleeve 41 from rocking, has improved the structural stability of external pressure axial type ripple compensator.

In a preferred scheme of the embodiment, both ends of the outer sleeve 1 are provided with annular discs 11, and the outer ring of each annular disc 11 is welded with the port of the outer sleeve 1. The end pipe 2 is connected with an annular disc 11 arranged at a first end of the outer sleeve 1, in particular the inner ring of the annular disc 11 is welded with the end of the end pipe 2. The end of the bellows assembly 4 remote from the end tube 2 is connected to an annular disc 11 provided at a second end of the outer sleeve 1.

In the present embodiment, the bellows 42 close to the end pipe 2 is a first bellows, and the bellows 42 far from the end pipe 2 is a second bellows. The outer wall of the end, close to the end pipe 2, of the extension pipe 3 is provided with a fixed disc, the fixed disc is welded with a connecting pipe 5, and the end, far away from the sliding sleeve 41, of the first corrugated pipe is fixedly sleeved on the periphery of the connecting pipe 5. A connecting pipe 5 is also arranged inside the annular disc 11 at the second end of the outer sleeve 1, and the end of the second bellows remote from the sliding sleeve 41 is connected to this connecting pipe 5.

In a preferred embodiment, a limit sliding mechanism 6 is arranged between the outer wall of the extension pipe 3 and the inner wall of the outer sleeve 1, the extension pipe 3 only slides along the axial direction of the outer sleeve 1 and does not rotate around the central axis of the extension pipe 3 under the action of the limit sliding mechanism 6, and the limit sliding mechanism 6 plays a role in guiding the sliding of the extension pipe 3 relative to the outer sleeve 1. So set up, can avoid extension pipe 3 to rotate, improve external pressure axial type corrugated compensator's stability.

In a specific embodiment, the limiting sliding mechanism 6 comprises a sliding block 61 arranged on one of the extension pipe 3 and the outer sleeve 1 and a sliding groove 62 arranged on the other one, the sliding block 61 and the sliding groove 62 are matched with each other, the extending direction of the sliding groove 62 is consistent with the axial direction of the outer sleeve 1, and the sliding block 61 extends into the sliding groove 62 and slides in the sliding groove 62. Preferably, the slider 61 is provided on the outer sleeve 1 and the runner 62 is provided on the inner wall of the extension pipe 3.

Furthermore, referring to fig. 3, a fixed plate is disposed on an outer wall of one end of the extension pipe 3 close to the end pipe 2, the connecting pipe 5 is welded on the fixed plate, the sliding block 61 is a sliding plate disposed on the outer wall of the connecting pipe 5, the inner wall of the outer sleeve 1 is provided with two limiting plates 63 disposed in parallel and extending along the axial direction of the outer sleeve 1, a gap between the two limiting plates 63 is a sliding groove 62, and the sliding plate extends into the gap between the two limiting plates 63 and slides in the gap. With this arrangement, the stopper plate 63 restricts the movement direction of the slide plate, and prevents the extension pipe 3 from rotating about its own center axis.

In a preferred embodiment of this embodiment, referring to fig. 2, the through holes 431 are arc-shaped holes, and the arc-shaped holes are uniformly distributed along the circumferential direction of the flange 43. With this arrangement, the plurality of through holes 431 can reduce the resistance to the flow of the medium, so that the medium pressures on both sides of the flange 43 are equalized.

In this embodiment, a flow guide tube 9 is further disposed in the end tube 2, a fixed end of the flow guide tube 9 is fixedly connected to an inner wall of the end tube 2, and a free end of the flow guide tube 9 extends into the extension tube 3. The guide pipe 9 plays a role in guiding the medium flow in the external pressure axial corrugated compensator.

In the present embodiment, a heat insulating tube 7 is fitted around the outer sleeve 1, and a heat insulating filler 8 is provided between the heat insulating tube 7 and the outer sleeve 1. In a particular embodiment, the insulating filler 8 comprises high temperature resistant ultra fine glass wool. The high-temperature-resistant superfine glass wool has the characteristics of low heat conductivity coefficient, good thermal insulation performance, high chemical stability and the like. The insulating filler 8 can reduce the heat exchange between the medium fluid and the external environment.

In the present embodiment, the external pressure axial type corrugated compensator includes an outer sleeve 1, an end pipe 2, an extension pipe 3, and a bellows assembly 4, wherein both ends of the outer sleeve 1 are provided with annular discs 11, an end portion of the end pipe 2 is fixedly connected to the annular disc 11 disposed at a first end of the outer sleeve 1, one end of the extension pipe 3 extends into the outer sleeve 1 from a second end of the outer sleeve 1, the extension pipe 3 can slide in the outer sleeve 1 along an axial direction of the outer sleeve 1, the bellows assembly 4 is disposed on an outer wall of the extension pipe 3 and located inside the outer sleeve 1, and the bellows assembly 4 includes a sliding sleeve 41 disposed on the outer wall of the extension pipe 3, and a first bellows and a second bellows disposed at left and right ends of the sliding sleeve 41. The outer wall of the end, close to the end pipe 2, of the extension pipe 3 is provided with a fixed disc, the fixed disc is welded with a connecting pipe 5, one end, far away from the sliding sleeve 41, of the first corrugated pipe is fixedly sleeved on the periphery of the connecting pipe 5, and the outer wall of the connecting pipe 5 is provided with a sliding plate. A connecting pipe 5 is also arranged inside the annular disc 11 at the second end of the outer sleeve 1, and the end of the second bellows remote from the sliding sleeve 41 is connected to this connecting pipe 5. The outer wall of the sliding sleeve 41 is provided with a flange 43, the flange 43 is provided with a plurality of arc-shaped holes for medium circulation, and the arc-shaped holes are uniformly distributed along the circumferential direction of the flange 43. Two limiting plates 63 which are arranged in parallel and extend along the axial direction of the outer sleeve 1 are arranged on the inner wall of the outer sleeve 1, and the sliding plate extends into a gap between the two limiting plates 63 and slides in the gap.

By the arrangement, the flange 43 can limit the radial displacement of the sliding sleeve 41 while not limiting the medium circulation, so that the sliding sleeve 41 is prevented from shaking, and the structural stability is improved; the limiting plate 63 limits the sliding direction of the sliding plate, and can prevent the extension pipe 3 from rotating around the central axis thereof, so that the external pressure axial type corrugated compensator is more stable.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an external pressure axial type corrugated compensator, its characterized in that, including outer sleeve (1), end pipe (2) and extension pipe (3), end pipe (2) with the first end fixed connection of outer sleeve (1), the one end of extension pipe (3) by the second end of outer sleeve (1) is stretched into, and can for outer sleeve (1) slides, still including setting up outer sleeve (1) with bellows subassembly (4) between extension pipe (3), the one end of bellows subassembly (4) with the outer wall fixed connection of extension pipe (3), the other end with the second end fixed connection of outer sleeve (1), bellows subassembly (4) are established including the cover sliding sleeve (41) on extension pipe (3) and are set up respectively two bellows (42) at the both ends of sliding sleeve (41), the outer wall of the sliding sleeve (41) is provided with a flange plate (43), and the flange plate (43) is provided with a plurality of through holes (431) for medium circulation.

2. External pressure axial type bellow compensator according to claim 1, characterized in that both ends of said outer sleeve (1) are provided with annular discs (11), said end tube (2) being connected with said annular discs (11) arranged at a first end of said outer sleeve (1), and the end of said bellow assembly (4) distal from said end tube (2) being connected with said annular discs (11) arranged at a second end of said outer sleeve (1).

3. External pressure axial type bellow compensator according to claim 2 characterized in that the external wall of the extension pipe (3) near one end of the end pipe (2) and the annular disc (11) at the second end of the outer sleeve (1) are provided with a connection pipe (5), and the end of the bellow (42) far from the sliding sleeve (41) is connected with the connection pipe (5).

4. External pressure axial type bellow compensator according to claim 1 characterized in that between the outer wall of said extension pipe (3) and the inner wall of said outer sleeve (1) there is a limiting sliding mechanism (6) to limit the sliding direction of said extension pipe (3) to the axial direction of said outer sleeve (1).

5. External pressure axial type bellow compensator according to claim 4 characterized in that said limiting sliding means (6) comprises a sliding block (61) provided on one of said extension pipe (3) and said outer sleeve (1) and a sliding groove (62) provided on the other and cooperating with said sliding block (61), the extension direction of said sliding groove (62) coinciding with the axial direction of said outer sleeve (1).

6. External pressure axial type bellow compensator according to claim 5 characterized in that said sliding blocks (61) are sliding plates fixedly arranged on the outer wall of said extension pipe (3), the inner wall of said outer sleeve (1) is provided with two parallel limiting plates (63) extending in the axial direction of said outer sleeve (1), said sliding plates extend into the gap between said two limiting plates (63).

7. External pressure axial type bellow compensator according to claim 1 characterized in that said through holes (431) are arc shaped holes, each of said arc shaped holes being evenly distributed along the circumference of said flange (43).

8. External pressure axial type bellow compensator according to claim 1, characterized in that inside said end tube (2) there is also a draft tube (9), the fixed end of said draft tube (9) is fixedly connected to the inner wall of said end tube (2), the free end of said draft tube (9) is extended into said extension tube (3).

9. The external pressure axial type bellow compensator according to claim 1 characterized in that said external sleeve (1) is externally sheathed with a heat insulating cylinder (7) and a heat insulating filler (8) is interposed between said heat insulating cylinder (7) and said external sleeve (1).

10. External pressure axial type bellow compensator according to claim 9 characterized in that said insulating filler (8) comprises high temperature resistant ultra fine glass wool.