CN210344678U

CN210344678U - Compound pull rod axial metal corrugated expansion joint

Info

Publication number: CN210344678U
Application number: CN201921261156.XU
Authority: CN
Inventors: 李敏
Original assignee: Chongqing Minte Metal Products Co Ltd
Current assignee: Chongqing Minte Metal Products Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-17
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a compound pull rod axial type corrugated metal expansion joint, take over in including, well takeover both ends have all welded the bellows, and two bellows keep away from well takeover one end and have all welded the joint pipe, two in the joint pipe is kept away from, take over one end and have all welded the flange ring, two in the joint pipe lateral wall all overlaps and is equipped with the becket piece, and two joint pipes are close to well takeover one end and all are equipped with the protruding edge portion of annular, two becket piece lateral wall is opened and is had the equidistance to be the perforation of annular distribution, and has connect same pull rod in the perforation of relative position department on two becket pieces, the pull rod both ends all are equipped with external screw thread portion, and the equal spiro union in pull rod both ends has. The utility model discloses make the bellows atress more even, combine the support ring piece that sets up simultaneously, the second spring part that the cooperation set up can absorb the axial vibrations of expansion joint, promotes the antidetonation effect of expansion joint, and two bellows of setting can carry out reciprocal two-way shock attenuation.

Description

Compound pull rod axial metal corrugated expansion joint

Technical Field

The utility model relates to an expansion joint technical field especially relates to a double entry pull rod axial type 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 common anti-seismic effect and uneven stress of the corrugated pipe, so that the compound pull rod axial 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 compound pull rod axial metal corrugated expansion joint.

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

the utility model provides a compound pull rod axial type corrugated metal expansion joint, includes well takeover, the bellows has all been welded at well takeover both ends, and two bellows keep away from well takeover one end and have all welded the end pipe, two in the end pipe is kept away from, and the flange ring has all been welded to takeover one end, two in the end pipe lateral wall all overlaps and is equipped with the becket piece, and two end pipes are close to well takeover one end and all are equipped with annular protruding edge portion, two becket piece lateral wall is opened there is the equidistance to be the perforation of annular distribution, and two becket pieces on the perforation interpolation of relative position department have same pull rod, the pull rod both ends all are equipped with external screw thread portion, and the equal spiro union in pull rod both ends has the metal cap, pull rod lateral wall both ends position department all overlaps and is equipped with first spring part, and the pull.

Preferably, the outer wall of the middle connecting pipe is sleeved with a supporting ring piece, the inner wall of the supporting ring piece is connected with second spring pieces distributed at equal intervals in a clamping mode, convex columns distributed annularly at equal intervals are arranged on the outer wall of the middle connecting pipe, and one end of each second spring piece is sleeved with the corresponding convex column.

Preferably, the side wall of the supporting ring piece is provided with circular holes which are distributed in an annular shape at equal intervals, and the inner wall of each circular hole is inserted with a sleeve.

Preferably, the pull rod is sleeved with the sleeve.

Preferably, the inner wall of the metal ring sheet is provided with a limiting convex edge, and the side wall of the end connecting pipe is provided with a strip-shaped slideway matched with the limiting convex edge.

Preferably, the cylindrical surface of the support ring piece is provided with pin holes which are distributed annularly at equal intervals, the inner walls of the pin holes are in threaded connection with pin bolts, and the pin bolts are connected with the second spring part in an inserted mode.

The utility model has the advantages that:

through the becket piece that sets up for the bellows atress is more even, combines the support ring piece that sets up simultaneously, and the second spring part that the cooperation set up can absorb the axial vibrations of expansion joint, promotes the antidetonation effect of expansion joint, and two bellows of setting can carry out reciprocal two-way shock attenuation.

Drawings

Fig. 1 is a schematic structural view of a cross-sectional view of a compound pull rod axial metal corrugated expansion joint provided by the present invention;

fig. 2 is a schematic structural view of a metal ring of the double pull rod axial metal corrugated expansion joint of the present invention.

In the figure: the device comprises a support ring sheet 1, a sleeve 2, a pull rod 3, a limiting convex ring 4, a first spring piece 5, a metal ring sheet 6, a butt joint pipe 7, a corrugated pipe 8, a convex column 9, a pin bolt 10, a second spring piece 11, a middle connecting pipe 12, a limiting convex edge 13 and a through hole 14.

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. 1-2, the compound pull rod axial type metal corrugated expansion joint comprises a middle connecting pipe 12, corrugated pipes 8 are welded at both ends of the middle connecting pipe 12, and the end joint pipes 7 are welded at the ends of the two corrugated pipes 8 far away from the middle connecting pipe 12, the flange rings are welded at the ends of the two end joint pipes 7 far away from the middle connecting pipe 12, the metal ring sheets 6 are sleeved on the side walls of the two end joint pipes 7, and one end of each of the two end connecting pipes 7 close to the middle connecting pipe 12 is provided with an annular convex edge part, the side walls of the two metal ring sheets 6 are provided with through holes 14 which are distributed annularly at equal intervals, and the same pull rod 3 is inserted into the through holes 14 at the opposite positions on the two metal ring sheets 6, both ends of the pull rod 3 are provided with external thread parts, and 3 both ends of pull rod all the spiro union have the metal cap, and 3 lateral wall both ends positions of pull rod all overlap and are equipped with first spring part 5, and 3 lateral walls of pull rod all are equipped with spacing bulge loop 4 near two first spring part 5 positions department.

The utility model discloses in, well 12 outer wall covers of takeover are equipped with support ring piece 1, and support ring piece 1 inner wall joint has the second spring part 11 that the equidistance distributes, well takeover 12 outer walls are opened has the equidistance to be the projection 9 that the annular distributes, and 11 one end of second spring part and projection 9 with cup joint, support ring piece 1 lateral wall is opened has the equidistance to be the round hole that the annular distributes, and the round hole inner wall is pegged graft and is had sleeve pipe 2, pull rod 3 cup joints with

sleeve pipe

2, 6 inner walls of metal ring piece are equipped with spacing stupefied 13, and 7 lateral walls of end joint pipe open have with the bar slide of spacing stupefied 13 looks adaptations of protruding, it has the equidistance to be the pinhole that the annular distributes to open on the support ring piece 1 cylinder, and pinhole inner wall spiro union has cotter.

The working principle is as follows: during the use, through the flange ring on two end joint pipes 7, with the expansion pipe butt joint to the pipeline in, metal ring piece 6 for 8 atress of bellows are more even, combine the support ring piece 1 that sets up simultaneously, and the second spring part 11 that the cooperation set up can absorb the axial vibrations of expansion joint, promotes the antidetonation effect of expansion joint, and two bellows 8 of setting can reciprocate two-way shock attenuation.

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 compound pull rod axial metal corrugated expansion joint comprises a middle connecting pipe (12) and is characterized in that corrugated pipes (8) are welded at two ends of the middle connecting pipe (12), end connecting pipes (7) are welded at one ends, far away from the middle connecting pipe (12), of the two corrugated pipes (8), flange rings are welded at one ends, far away from the middle connecting pipe (12), of the end connecting pipes (7), metal ring sheets (6) are sleeved on the side walls of the two end connecting pipes (7), annular convex edge portions are arranged at one ends, close to the middle connecting pipe (12), of the two end connecting pipes (7), through holes (14) which are distributed annularly at equal intervals are formed in the side walls of the two metal ring sheets (6), the same pull rod (3) is inserted into the through holes (14) at opposite positions on the two metal ring sheets (6), outer thread portions are arranged at two ends of the pull rod (3), and metal caps are screwed at two ends of the pull rod (3), pull rod (3) lateral wall both ends position department all is equipped with first spring part (5), and pull rod (3) lateral wall is close to two first spring part (5) position departments and all is equipped with spacing bulge loop (4).

2. The compound pull rod axial type metal corrugated expansion joint as claimed in claim 1, wherein the outer wall of the middle connecting pipe (12) is sleeved with a support ring piece (1), second spring pieces (11) are clamped on the inner wall of the support ring piece (1) and distributed at equal intervals, convex columns (9) are arranged on the outer wall of the middle connecting pipe (12) and distributed at equal intervals in an annular mode, and one end of each second spring piece (11) is sleeved with the corresponding convex column (9).

3. The compound pull rod axial type metal corrugated expansion joint as claimed in claim 2, wherein the side wall of the support ring sheet (1) is provided with circular holes distributed in an annular shape at equal intervals, and the inner wall of the circular hole is inserted with a sleeve (2).

4. A compound tie rod axial type metal bellows expansion joint according to claim 3, wherein said tie rod (3) is sleeved with a sleeve (2).

5. The compound pull rod axial type metal corrugated expansion joint as claimed in claim 4, wherein the inner wall of the metal ring sheet (6) is provided with a limiting convex edge (13), and the side wall of the end joint pipe (7) is provided with a strip-shaped slideway matched with the limiting convex edge (13).

6. The compound pull rod axial type metal corrugated expansion joint as claimed in claim 5, wherein the cylindrical surface of the support ring piece (1) is provided with pin holes which are distributed in an annular shape at equal intervals, the inner walls of the pin holes are in threaded connection with pin bolts (10), and the pin bolts (10) are inserted into the second spring piece (11).