CN210739698U

CN210739698U - Rectangular metal corrugated expansion joint

Info

Publication number: CN210739698U
Application number: CN201921342477.2U
Authority: CN
Inventors: 李敏
Original assignee: Chongqing Minte Metal Products Co Ltd
Current assignee: Chongqing Minte Metal Products Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-06-12
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a rectangle metal corrugated expansion joint, take over in the rectangle, the rectangle bellows has all been welded at the takeover both ends in the rectangle, and two rectangle bellows keep away from in the rectangle that the one end of takeover has all welded the rectangle end pipe, and two rectangle end pipes keep away from rectangle bellows one end and have all welded the rectangle flange, two all be equipped with pull rod assembly between the takeover in rectangle end pipe and the rectangle, pull rod assembly takes over in the rectangle including the welding setting and rectangle end pipe is close to the rectangle frame of rectangle bellows one side, and is close to rectangle bellows both sides department between two rectangle frames and all is equipped with X shape pull rod group. The utility model provides the stability of promotion expansion joint for the rectangle bellows atress is more even, and the extension spring that the cooperation set up can promote the anti deformability of rectangle bellows.

Description

Rectangular metal corrugated expansion joint

Technical Field

The utility model relates to an expansion joint technical field especially relates to a rectangle metal ripple expansion joint.

Background

An expansion joint refers to a flexible element that effectively functions to compensate for axial deformation. For example, the expansion joint welded on the shell of the fixed tube-plate heat exchanger has large axial flexibility and easy deformation, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell and avoiding causing strength damage, instability damage and tube pull-out damage. The expansion joint has many kinds, and the common structures include wave, ring plate welding, clamping shell type and the like, wherein the wave expansion joint is most widely applied, and the ring plate welding expansion joint is only suitable for normal pressure or low pressure occasions.

The existing expansion joint has general deformation resistance and low stability, so that a rectangular metal corrugated expansion joint is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a rectangular metal corrugated expansion joint.

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

the utility model provides a rectangle corrugated metal expansion joint, takes over in the rectangle, take over both ends all welded the rectangle bellows in the rectangle, and two rectangle bellows keep away from in the rectangle that take over one end all welded the rectangle end pipe, and two rectangle end pipes keep away from rectangle bellows one end and all weld the rectangle flange, two all be equipped with pull rod assembly between taking over in rectangle end pipe and the rectangle, pull rod assembly takes over in the rectangle including the welding setting and rectangle end pipe is close to the rectangle frame of rectangle bellows one side, and is close to rectangle bellows both sides department between two rectangle frames and all is equipped with X shape pull rod group.

Preferably, the tension springs are clamped between the rectangular frames at the two ends of the same rectangular corrugated pipe at two sides.

Preferably, the X-shaped pull rod group is formed by hinging two pull rods, a sliding sleeve is sleeved at the end position of each of the two pull rods, and the sliding sleeve is rotatably connected with the side wall of the rectangular frame close to the corner position.

Preferably, the end parts of the two pull rods are provided with external thread parts, and the four external thread parts are screwed with fastening nuts.

Preferably, the rectangular hole is opened in the position that the rectangle frame lateral wall is close to the turning, the welding of sliding sleeve both sides has the round pin post that the symmetry set up, and two round pin posts rotate with rectangular hole both sides inner wall respectively and be connected.

Preferably, the rectangular flange is far away from one side of the rectangular middle connecting pipe and is provided with sealing grooves distributed in an annular mode, and the inner walls of the two sealing grooves are clamped with sealing rings.

The utility model has the advantages that:

through the X-shaped pull rod group that sets up, can form triangle-shaped stable structure on one side with the rectangle frame, promote the stability of expansion joint for the rectangle bellows atress is more even, and the anti deformability of rectangle bellows can be promoted to the extension spring that the cooperation set up.

Drawings

Fig. 1 is a schematic structural view of a rectangular metal corrugated expansion joint of the present invention;

fig. 2 is a schematic structural view of a rectangular frame of a rectangular metal corrugated expansion joint according to the present invention;

fig. 3 is the structural schematic diagram of a rectangular metal corrugated expansion joint sliding sleeve provided by the utility model.

In the figure: the device comprises a 1 rectangular middle connecting pipe, a 2 rectangular corrugated pipe, a 3 tension spring, a 4 rectangular end connecting pipe, a 5 rectangular frame, a 6 sliding sleeve, a 7 pull rod, an 8 fastening nut, a 9 external thread part, a 10 rectangular hole and 11 pin columns.

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.

Referring to fig. 1-3, a rectangular metal corrugated expansion joint, including taking over 1 in the rectangle, take over 1 both ends all welded rectangular bellows 2 in the rectangle, and two rectangular bellows 2 keep away from in the rectangle that 1 one end of taking over all welded rectangular end pipe 4, two rectangular end pipe 4 keep away from 2 one end of rectangular bellows and all welded rectangular flange, all be equipped with pull rod assembly between taking over 1 in two rectangular end pipe 4 and the rectangle, pull rod assembly is including welding setting take over 1 in the rectangle and rectangular end pipe 4 is close to rectangular frame 5 of 2 one sides of rectangular bellows, and the department that is close to 2 both sides of rectangular bellows between two rectangular frames 5 all is equipped with X shape pull rod group.

The utility model discloses in, the equal joint in both sides department has extension spring 3 between the rectangle frame 5 that is located 2 both ends departments of same rectangle bellows, X shape pull rod group is formed by two pull rods 7 are articulated, and the tip position department of two pull rods 7 all overlaps and is equipped with sliding sleeve 6, sliding sleeve 6 is close to turning position department with rectangle frame 5 lateral walls and rotates and be connected, two pull rod 7 tip all are equipped with external screw thread portion 9, and four equal spiro union have fastening nut 8 on the external screw thread portion 9, rectangle frame 5 lateral walls are close to turning position department and open there is rectangular hole 10, the 6 both sides welding of sliding sleeve has round pin post 11 that the symmetry set up, and two round pin post 11 rotate with rectangular hole 10 both sides inner wall respectively and are connected, the sealed slot that the annular distributes is all opened to takeover 1 one side in the rectangle is kept away from to the rectangle flange.

The working principle is as follows: during the use, through setting up the rectangle flange on two rectangle end joints pipe 4, with expansion joint fixed mounting in suitable pipeline, X shape pull rod group can form triangle-shaped stable structure on one side with rectangle frame 5, promotes the stability of expansion joint for 2 atress of rectangular bellows are more even, and the extension spring 3 that the cooperation set up can promote the resistance to deformation ability of rectangular bellows 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a rectangle corrugated metal expansion joint, takes over (1) in the rectangle, its characterized in that, take over (1) both ends all weld rectangle bellows (2) in the rectangle, and two rectangle bellows (2) keep away from in the rectangle that take over (1) one end all welds rectangle end pipe (4), and two rectangle end pipe (4) keep away from rectangle bellows (2) one end and all weld the rectangle flange, two all be equipped with the draw bar assembly between taking over (1) in rectangle end pipe (4) and the rectangle, the draw bar assembly sets up rectangle frame (5) that take over (1) and rectangle end pipe (4) are close to rectangle bellows (2) one side in the rectangle including the welding, and is close to rectangle bellows (2) both sides department between two rectangle frames (5) and all is equipped with X shape draw bar group.

2. The rectangular metal corrugated expansion joint as claimed in claim 1, wherein tension springs (3) are clamped at both sides between the rectangular frames (5) at both ends of the same rectangular corrugated pipe (2).

3. The rectangular metal corrugated expansion joint as claimed in claim 2, wherein the X-shaped pull rod set is formed by hinging two pull rods (7), and sliding sleeves (6) are respectively sleeved at the end positions of the two pull rods (7), and the sliding sleeves (6) are rotatably connected with the side wall of the rectangular frame (5) at positions close to the corners.

4. A rectangular metal bellows expansion joint according to claim 3, wherein both tie rods (7) are provided with external threaded portions (9) at their ends, and wherein fastening nuts (8) are screwed onto all four external threaded portions (9).

5. The rectangular metal corrugated expansion joint as claimed in claim 4, wherein a rectangular hole (10) is formed in the side wall of the rectangular frame (5) near the corner, symmetrically arranged pins (11) are welded to the two sides of the sliding sleeve (6), and the two pins (11) are respectively connected with the inner walls of the two sides of the rectangular hole (10) in a rotating manner.

6. The rectangular metal corrugated expansion joint as claimed in claim 5, wherein the rectangular flange is provided with sealing grooves distributed annularly on the side away from the rectangular middle connecting pipe (1), and the inner walls of the two sealing grooves are clamped with sealing rings.