CN216952248U

CN216952248U - Anti-throwing limiting piece for axial tearing

Info

Publication number: CN216952248U
Application number: CN202123165435.6U
Authority: CN
Inventors: 王胜利; 游文宇; 李源; 张小峰; 高文明
Original assignee: Jiangsu Power Equipment Co ltd
Current assignee: Jiangsu Power Equipment Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-07-12
Anticipated expiration: 2031-12-16

Abstract

The utility model relates to an axial tearing anti-throwing limiting piece which comprises a limiting mechanism and two first semi-circular plates which are symmetrically arranged up and down, wherein the two first semi-circular plates surround a cylindrical structure, and chamfers are arranged at two ends of each first semi-circular plate; the limiting mechanism comprises two limiting assemblies, and the two first semicircular plates are located between the two limiting assemblies; the limiting component comprises two second semicircular plates and two third semicircular plates, the two second semicircular plates surround to form a cylindrical structure coaxial with the first semicircular plate, the axial tearing and throwing-preventing limiting part can prevent the axial breakage of a pipeline, and in addition, the application range can be further improved by adjusting the depth of the first semicircular plate inserted into the second semicircular plate.

Description

Anti-throwing limiting piece for axial tearing

Technical Field

The utility model relates to an axial tearing and anti-throwing limiting piece, and belongs to the technical field of high-pressure pipeline installation.

Background

During the installation process of the high-pressure pipeline, butt-jointed welding seams are usually arranged, and the welding seams are generally weak areas and are easy to break. When the high-pressure pipeline and the rigid pipe support are installed together, the pipeline is flexible, and the pipe support structure is rigid, so that the flexible pipeline can form a stress concentration surface at two sides of the rigid pipe support, and the stress concentration surface is also a weak area and is easy to break. Once the weak area of the pipeline is broken, the high-pressure fluid in the pipeline can be sprayed out from the fracture, so that the two sections of pipelines move in opposite directions under the action of the spraying reaction force, namely the whipping phenomenon.

The existing anti-whiplash limiting piece is generally in a U-shaped structure, and the U-shaped anti-whip piece is used for preventing radial fracture of a pipeline and cannot be used for preventing axial fracture. Therefore, there is a need for an axial tear-preventing dump limiter that prevents axial rupture.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the deficiencies of the prior art, an axial tear anti-fling limiter is provided.

The technical scheme adopted by the utility model for solving the problems is as follows: an axial tearing anti-throwing limiting piece comprises a limiting mechanism and two first semi-circular plates which are symmetrically arranged up and down, wherein the two first semi-circular plates surround to form a cylindrical structure, and chamfers are arranged at two ends of each first semi-circular plate;

the limiting mechanism comprises two limiting assemblies, and the two first semicircular plates are located between the two limiting assemblies;

the limiting component comprises two second semicircular plates and two third semicircular plates, the two second semicircular plates are encircled into a cylindrical structure coaxial with the first semicircular plate, the two second semicircular plates are connected through a plurality of first bolts, the two third semicircular plates are encircled into a cylindrical structure coaxial with the first semicircular plate, the two second semicircular plates and the two third semicircular plates are respectively in one-to-one correspondence with the two first semicircular plates, the third semicircular plates are fixedly and hermetically arranged on one sides, close to the first semicircular plate, of the second semicircular plates, the first semicircular plates and the second semicircular plates are of an integrally formed structure, one ends of the first semicircular plates are inserted into the third semicircular plates, the first semicircular plates and the third semicircular plates are in sliding and sealing connection, gaps are formed between the first semicircular plates and the second semicircular plates, and the first semicircular plates are connected with the third semicircular plates through a plurality of second bolts, the second bolt is parallel to the first semi-circular plate.

Compared with the prior art, the utility model has the advantages that:

the axial tearing and throwing prevention limiting piece can prevent the axial breakage of a pipeline, and can improve the application range by adjusting the depth of the first semicircular plate inserted into the second semicircular plate.

Drawings

FIG. 1 is a schematic view of an axial tear anti-fling limiter of the present invention;

FIG. 2 is a schematic view of an axial tear anti-fling limiter of the present invention;

fig. 3 is a schematic view of the axial tear anti-fling limiter of the present invention.

Wherein: 1. the anti-dropping device comprises a first semicircular plate, 2 second semicircular plates, 3 third semicircular plates, 4 first bolts, 5 second bolts, 6 pipelines, 7 clamping blocks and 8U-shaped anti-dropping pieces.

Detailed Description

As shown in fig. 1-3, the axial tearing and anti-throwing limiting member in the present embodiment comprises a limiting mechanism and two first semi-circular plates 1 which are arranged up and down symmetrically, wherein the two first semi-circular plates 1 surround to form a cylindrical structure, and chamfers are arranged at two ends of each first semi-circular plate 1;

the limiting mechanism comprises two limiting assemblies, and the two first semicircular plates 1 are positioned between the two limiting assemblies;

the limiting assembly comprises two second semi-circular plates 2 and two third semi-circular plates 3, the two second semi-circular plates 2 are encircled to form a cylindrical structure coaxial with the first semi-circular plate 1, the two second semi-circular plates 2 are connected through a plurality of first bolts 4, the two third semi-circular plates 3 are encircled to form a cylindrical structure coaxial with the first semi-circular plate 1, the two second semi-circular plates 2 and the two third semi-circular plates 3 are respectively in one-to-one correspondence with the two first semi-circular plates 1, the third semi-circular plates 3 are fixedly and hermetically arranged on one sides of the second semi-circular plates 2 close to the first semi-circular plate 1, the first semi-circular plates 1 and the second semi-circular plates 2 are of an integrally formed structure, one ends of the first semi-circular plates 1 are inserted into the third semi-circular plates 3, the first semi-circular plates 1 are connected with the third semi-circular plates 3 in a sliding and sealing mode, a gap is arranged between the first semi-circular plates 1 and the second semi-circular plates 2, and the first semi-circular plates 1 are connected with the third semi-circular plates 3 through a plurality of second bolts 5, the second bolt 5 is parallel to the first semicircular plate 1.

When the limiting piece is installed, two pipelines 6 are coaxially welded in advance, a plurality of clamping blocks 7 distributed in the circumferential direction are welded on the outer wall of each pipeline 6, then a first bolt 4 and a second bolt 5 are loosened, two first semi-circular plates 1 are surrounded at the welding positions of the two pipelines 6, one side of each clamping block 7, which is far away from the welding position of the two pipelines 6, is defined as the outer side, then two second semi-circular plates 2 on the same side of the two first semi-circular plates 1 are surrounded on one pipeline 6 and are positioned on the outer side of the clamping block 7 to abut against, two second semi-circular plates 2 on the other side of the two first semi-circular plates 1 are surrounded on the other pipeline 6 and are positioned on the outer side of the clamping block 7, the third semi-circular plate 3 can be surrounded while the second semi-circular plates 2 are surrounded, the inner diameter of a cylindrical structure surrounded by the two semi-circular plates is equal to the outer diameter of the pipelines 6 through size calculation, and the both ends of the first semicircle board 1 insert two third semicircle boards 3 that correspond rather than all the time, finally, lock the second bolt 5, make the second semicircle board 2 lean on with the outside of fixture block 7, and fix two first semicircle boards 1 on subaerial can, in case pipeline 6 butt weld breaks, the injection counter-force that pipeline 6 bore is transmitted to the fixture block 7 of two pipelines 6 at first, and transmit to each second semicircle board 2, third semicircle board 3 and first semicircle board 1 through the fixture block 7 in proper order, all injection forces are born by first semicircle board 1, second semicircle and third semicircle board 3, thus can prevent axial breakage, and, through the cooperation between first semicircle board 1 and the third semicircle board 3, can make this limiter be applicable to the fixture block 7 of different sizes, have improved application scope.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.

Claims

1. The utility model provides an axial tear prevents getting rid of restriction spare which characterized in that: the device comprises a limiting mechanism and two first semi-circular plates (1) which are arranged up and down symmetrically, wherein the two first semi-circular plates (1) surround to form a cylindrical structure;

the limiting mechanism comprises two limiting assemblies, and two first semicircular plates (1) are positioned between the two limiting assemblies;

the limiting component comprises two second semi-circular plates (2) and two third semi-circular plates (3), the two second semi-circular plates (2) surround to form a cylindrical structure coaxial with the first semi-circular plate (1), the two second semi-circular plates (2) are connected through a plurality of first bolts (4), the two third semi-circular plates (3) surround to form a cylindrical structure coaxial with the first semi-circular plate (1), the two second semi-circular plates (2) and the two third semi-circular plates (3) are respectively in one-to-one correspondence with the two first semi-circular plates (1), the third semi-circular plates (3) are fixedly and hermetically arranged on one sides, close to the first semi-circular plate (1), of the second semi-circular plates (2), one ends of the first semi-circular plates (1) are inserted into the third semi-circular plates (3), the first semi-circular plates (1) and the third semi-circular plates (3) are connected in a sliding and sealing mode, gaps are formed between the first semi-circular plates (1) and the second semi-circular plates (2), the first semicircular plate (1) is detachably connected with the third semicircular plate (3).

2. The axial tear anti-fling limiter of claim 1, wherein: the first semicircular plate (1) is connected with the third semicircular plate (3) through a plurality of second bolts (5).

3. The axial tear anti-fling limiter of claim 2, wherein: the second bolt (5) is parallel to the first semicircle plate (1).

4. The axial tear anti-fling limiter of claim 1, wherein: and chamfers are arranged at two ends of the first semi-circular plate (1).

5. The axial tear vent limiter of claim 1 wherein: the first semicircular plate (1) and the second semicircular plate (2) are of an integrally formed structure.