CN213420290U

CN213420290U - Double axial compensation metal expansion joint

Info

Publication number: CN213420290U
Application number: CN202022083792.7U
Authority: CN
Inventors: 黄锐
Original assignee: Jiangsu Baoxinlai Pipeline Complete Equipment Co ltd
Current assignee: Jiangsu Baoxinlai Pipeline Complete Equipment Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-11
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a dual axial compensation metal expansion joint relates to expansion joint technical field. The utility model comprises a middle tube; expansion pipes are sleeved at the two ends of the middle pipe; the side surfaces of the peripheries of the two ends of the middle pipe are respectively provided with a first limiting ring; a first sealing ring is sleeved on the peripheral side surface of the first limiting ring; the expansion pipe comprises a corrugated pipe; one end of the corrugated pipe is provided with a connecting pipe; the inner peripheral side surface of one end of the connecting pipe, which is far away from the corrugated pipe, is provided with a second limiting ring; the inner peripheral side surface of the second limiting ring is sleeved with a second sealing ring. The utility model discloses a pipeline is when being heated expend with heat and contract with cold, and two bellows stretch out and draw back and follow intermediate pipe axial displacement, and first sealing washer and second sealing washer seal between intermediate pipe and the connecting pipe, realize the dual axial compensation of expansion joint, have improved the compensation effect of expansion joint, and to some pipe connection longer or when shorter, the accessible is adjusted the head rod and is adjusted the length between intermediate pipe and the expansion pipe, has reduced extra installation procedure, and the practicality is stronger.

Description

Double axial compensation metal expansion joint

Technical Field

The utility model belongs to the technical field of the expansion joint, especially, relate to a dual axial compensation metal expansion joint.

Background

The metal expansion joint is a flexible structure provided on the vessel shell or pipe to compensate for additional stresses due to temperature differences and mechanical vibrations. As an elastic compensation element capable of freely stretching, the elastic compensation element has the advantages of reliable work, good performance, compact structure and the like, and is widely applied to chemical, metallurgical, nuclear and other departments.

Expansion joint is under the effect of the difference in temperature, and the bellows is realized flexible, but expansion joint's inflation volume relies on the bellows completely, and compensation ability is lower, and to some pipe connection longer or when short, need cut the pipeline of connecting or additionally increase the connecting pipe and install expansion joint, and the installation is inconvenient, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dual axial compensation metal expansion joint, through the structural design of intervalve, expansion pipe, first sealing washer, second sealing washer and spring, it is poor to have solved current expansion joint compensation effect, installs inconvenient problem.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a double axial compensation metal expansion joint, which comprises a middle pipe; expansion pipes are sleeved at the two ends of the middle pipe;

the side surfaces of the peripheries of the two ends of the middle pipe are respectively provided with a first limiting ring; a first annular groove is formed in the side face of the periphery of the first limiting ring; a first sealing ring is sleeved in the first annular groove;

the expansion tube comprises a bellows; one end of the corrugated pipe is provided with a connecting pipe; a second limiting ring matched with the middle pipe is arranged on the inner peripheral side face of one end, far away from the corrugated pipe, of the connecting pipe; a second annular groove is formed in the inner peripheral side surface of the second limiting ring; and a second sealing ring is sleeved in the second annular groove.

Furthermore, the circumferential side face annular array at one end, far away from the corrugated pipe, of the connecting pipe is provided with a first connecting seat.

Furthermore, a mounting flange is arranged at the center of the peripheral side surface of the middle pipe; the annular arrays on the two surfaces of the mounting flange are provided with first connecting rods; the end part of the first connecting rod is fixedly connected with the first connecting seat through a bolt.

Furthermore, the spring is sleeved on the peripheral side surface of the middle pipe and between the first limiting ring and the second limiting ring.

Furthermore, the circumferential side surfaces of two ends of the corrugated pipe are respectively provided with a second connecting seat in an annular array; a second connecting rod is fixedly connected between the second connecting seats positioned at the two ends of the corrugated pipe through bolts; and a connecting flange is arranged on the peripheral side surface of one end, far away from the connecting pipe, of the corrugated pipe.

The utility model discloses following beneficial effect has:

the utility model discloses a middle tube, the expansion pipe, first sealing washer, the structural design of second sealing washer and spring, when the pipeline receives expend with heat and contract with cold, two bellows stretch out and draw back and follow middle tube axial displacement, first sealing washer and second sealing washer are sealed between middle tube and the connecting pipe, realize the dual axial compensation of expansion joint, the compensation effect of expansion joint has been improved, and longer or shorter time to some pipe connection, the accessible is adjusted the length between first connecting rod to middle tube and the expansion pipe and is adjusted, extra installation procedure has been reduced, and the practicality is stronger.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a double axial compensation metal expansion joint of the present invention;

FIG. 2 is a schematic cross-sectional view of a dual axial compensation metal expansion joint;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic structural view of the intermediate tube;

FIG. 5 is a schematic structural view of an expansion tube;

in the drawings, the components represented by the respective reference numerals are listed below:

1-an intermediate pipe, 2-an expansion pipe, 3-a first sealing ring, 4-a second sealing ring, 5-a spring, 101-a first limit ring, 102-a first annular groove, 103-a mounting flange, 104-a first connecting rod, 201-a corrugated pipe, 202-a connecting pipe, 203-a second limit ring, 204-a second annular groove, 205-a first connecting seat, 206-a second connecting seat, 207-a second connecting rod, 208-a connecting flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention relates to a dual axial compensation metal expansion joint, which comprises a middle pipe 1; the expansion pipes 2 are sleeved at the two ends of the middle pipe 1;

the side surfaces of the peripheries of two ends of the middle pipe 1 are respectively provided with a first limiting ring 101; a first annular groove 102 is formed in the peripheral side surface of the first limiting ring 101; a first sealing ring 3 is sleeved in the first annular groove 102;

the expansion pipe 2 includes a corrugated pipe 201; one end of the corrugated pipe 201 is provided with a connecting pipe 202; the inner peripheral side surface of one end of the connecting pipe 202 far away from the corrugated pipe 201 is provided with a second limiting ring 203 matched with the middle pipe 1; a second annular groove 204 is formed in the inner peripheral side surface of the second limit ring 203; the second annular groove 204 is internally sleeved with a second sealing ring 4.

The connecting tube 202 is provided with a first connecting seat 205 in an annular array on the peripheral side surface of the end far away from the bellows 201.

Wherein, the central position of the peripheral side surface of the middle pipe 1 is provided with a mounting flange 103; the two surfaces of the mounting flange 103 are provided with first connecting rods 104 in an annular array; the end of the first connecting rod 104 is fixedly connected to the first connecting seat 205 through a bolt.

Wherein, the spring 5 is sleeved on the peripheral side surface of the middle tube 1 and positioned between the first limit ring 101 and the second limit ring 203.

Wherein, the circumferential side surfaces of both ends of the corrugated pipe 201 are both provided with a second connecting seat 206 in an annular array; a second connecting rod 207 is fixedly connected between the second connecting seats 206 at the two ends of the corrugated pipe 201 through bolts; the outer peripheral side of one end of the corrugated pipe 201 far away from the connecting pipe 202 is provided with a connecting flange 208.

One specific application of this embodiment is: during installation, nuts at two ends of the first connecting rod 104 are unscrewed, the two expansion joints 2 are pulled, the connecting flanges 208 at the end parts of the two expansion pipes 2 are connected with two ends of an installation pipeline through bolts, nuts at two ends of the first connecting rod 104 are screwed, the two expansion joints 2 move relatively to adjust the distance between the two expansion joints 2 and the middle pipe 1, when temperature difference occurs in the installation pipeline, the two corrugated pipes 201 expand with heat and contract with cold and push the two connecting pipes 202 to move axially along the middle pipe 1, double axial compensation of the expansion joints is realized, the compensation effect of the expansion joints is improved, the first sealing rings 3 positioned at the peripheral side surfaces of two ends of the middle pipe 1 and the second sealing rings 4 positioned at the end parts of the connecting pipes 202 seal the middle pipe 1 and the connecting pipes 202, and the position of the middle pipe 1 is effectively limited under the action of the spring 5, the whole installation is convenient, and additional installation procedures are reduced, the practicability is stronger.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dual axial compensation metal expansion joint characterized in that:

comprising an intermediate pipe (1); expansion pipes (2) are sleeved at the two ends of the middle pipe (1);

the side surfaces of the peripheries of two ends of the middle pipe (1) are respectively provided with a first limiting ring (101); a first annular groove (102) is formed in the peripheral side face of the first limiting ring (101); a first sealing ring (3) is sleeved in the first annular groove (102);

the expansion pipe (2) comprises a bellows (201); one end of the corrugated pipe (201) is provided with a connecting pipe (202); a second limiting ring (203) matched with the middle pipe (1) is arranged on the inner peripheral side surface of one end, far away from the corrugated pipe (201), of the connecting pipe (202); a second annular groove (204) is formed in the inner peripheral side surface of the second limiting ring (203); and a second sealing ring (4) is sleeved in the second annular groove (204).

2. The double axial compensation metal expansion joint of claim 1, wherein the circumferential side annular array of the end of the connecting tube (202) remote from the bellows (201) is provided with a first connecting seat (205).

3. The double axial compensation metal expansion joint of claim 2, wherein the central position of the peripheral side surface of the intermediate pipe (1) is provided with a mounting flange (103); the two surfaces of the mounting flange (103) are provided with first connecting rods (104) in an annular array; the end part of the first connecting rod (104) is fixedly connected with the first connecting seat (205) through a bolt.

4. The double axial compensation metal expansion joint of claim 3, wherein the intermediate tube (1) is sleeved with a spring (5) on the peripheral side between the first stop collar (101) and the second stop collar (203).

5. The double axial compensation metal expansion joint of claim 1, wherein the bellows (201) is provided with a second connection seat (206) in an annular array on both end peripheral sides; a second connecting rod (207) is fixedly connected between the second connecting seats (206) positioned at the two ends of the corrugated pipe (201) through bolts; and a connecting flange (208) is arranged on the peripheral side surface of one end of the corrugated pipe (201) far away from the connecting pipe (202).