CN211759566U

CN211759566U - Auxiliary device for bending and welding construction of large thin-wall pipe fitting

Info

Publication number: CN211759566U
Application number: CN202020188794.XU
Authority: CN
Inventors: 王东振; 景帅帅; 李磊; 李康平; 郭玉顺
Original assignee: Tianyuan Construction Group Co Ltd; Shandong Hongda Real Estate Co Ltd
Current assignee: Tianyuan Construction Group Co Ltd; Shandong Hongda Real Estate Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-10-27
Anticipated expiration: 2030-02-20

Abstract

The auxiliary equipment for bending and welding the large-sized thin-walled pipe fitting comprises a rubber liner positioned in a pipe at the bending and welding position of the large-sized thin-walled pipe fitting, a protective metal ring sleeved on the outer wall of the rubber liner, a traction rope fixed on the rubber liner, an inflation pipe used for filling inert gas into the rubber liner and an air pump used for providing power for the inflation pipe. The utility model discloses an inside packing inner bag of placing of pipe fitting to aerifing in system of bending and welding process and giving the certain intensity of inner bag, make it form certain extrusion to thin wall steel pipe inner wall, thereby prevent quality problems such as the deformation of thin wall steel pipe in the construction, belong to the building engineering exquisiteness and build the category, be a green building construction technique.

Description

Auxiliary device for bending and welding construction of large thin-wall pipe fitting

Technical Field

The utility model belongs to the building construction field specifically belongs to a curved system of large-scale thin-walled tube spare, welding construction auxiliary assembly.

Background

In the construction and construction of building engineering, sometimes thin-wall steel pipes need to be bent or butt-welded, the traditional bending method mostly adopts heating bending or direct bending, and the traditional method is easy to reduce the free strength of the steel pipes or cause the deformation of the steel pipes in the bending process, thereby causing the bending failure and influencing the bending use quality; when the steel pipe is welded, the quality problems such as penetration welding and the like easily occur in the welding process due to the relatively thin thickness of the thin-wall steel pipe, so that the welding construction is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large-scale thin-walled tube system of bending, welding construction auxiliary assembly, solve prior art pipe fitting and in the system welding process of bending, influence quality's technical problem such as easy appearing welding thoroughly.

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

the utility model provides a large-scale thin wall pipe bending, welding construction auxiliary assembly which characterized in that: the device comprises a rubber liner positioned in a bending and welding pipe of a large-sized thin-wall pipe fitting, a protective metal ring sleeved on the outer wall of the rubber liner, a traction rope fixed on the rubber liner, an inflation pipe used for filling inert gas into the rubber liner and an air pump used for providing power for the inflation pipe.

Furthermore, the protective metal ring is made of steel alloy materials, the width of the protective metal ring is 50mm-100mm, and the thickness of the protective metal ring is 3mm-8 mm.

Furthermore, the wall thickness of the rubber inner container is 3mm-5mm, the rubber inner container is made of natural rubber or synthetic rubber, and the outer diameter of the rubber inner container in an inflated state is matched with the outer diameter of the pipe fitting.

Further, the inert gas is nitrogen.

In addition, the inflation tube is a rubber pipeline with the diameter of 1-2 mm.

More preferably, the length of the rubber liner is greater than the bending section length 2D, and D is the diameter of the pipe fitting.

Compared with the prior art the utility model has the following characteristics and beneficial effect:

the utility model discloses a place the packing inner bag inside the pipe fitting to aerifing in system of bending and welding process and giving the certain intensity of inner bag, make it form certain extrusion to thin wall steel pipe inner wall, thereby prevent the quality problems such as deformation of thin wall steel pipe in the construction.

Drawings

Fig. 1 is the utility model relates to a curved system of large-scale thin-walled tube spare, welding construction auxiliary assembly's concrete application example.

Reference numerals: 1-a rubber liner; 2-a guard metal ring; 3-a traction rope; 4-a gas-filled tube; 5, an air pump; 6-pipe fitting.

Detailed Description

In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention will be further described below.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

A large-scale thin-wall pipe bending and welding construction auxiliary device is disclosed as shown in figure 1, and comprises a rubber inner container 1 positioned in a bending and welding position pipe of the large-scale thin-wall pipe, a protective metal ring 2 sleeved on the outer wall of the rubber inner container 1, a traction rope 3 fixed on the rubber inner container 1, an inflation pipe 4 used for filling inert gas into the rubber inner container 1 and an air pump 5 used for providing power for the inflation pipe 4, wherein the traction rope 3 is provided with two pull ropes 2 which are respectively fixed at two ends of the rubber inner container 1, the strength of the traction rope 3 can pull the rubber inner container to a prefabricated position of a pipe fitting 6, the protective metal ring 2 is made of steel alloy materials, the width is 50mm-100mm, the thickness is 3mm-8mm, the protective metal ring 2 has high temperature resistance, and thermal insulation materials are coated on the inner wall close to the rubber inner container 1 so as to isolate heat generated by welding and prevent the rubber inner container 1, the service life is further reduced, the wall thickness of the rubber liner 1 is 3mm-5mm, the rubber liner is made of natural rubber or synthetic rubber, the outer diameter of the rubber liner is matched with the outer diameter of the pipe fitting 6 in an inflated state, inert gas is nitrogen, the inflation tube 4 is a rubber pipeline with the diameter of 1-2 mm, one end of the inflation tube is connected with the air pump 5, the other end of the inflation tube is communicated with the rubber liner 1, the length of the rubber liner 1 is larger than the bending section length 2D, and the D is the diameter of the pipe fitting 6.

The utility model discloses the construction steps are as follows, according to large-scale pipe fitting dimensional requirement, prepare a rubber inner bag, the inflated state of rubber inner bag is bar column structure, suit with pipe fitting intraductal space, and confirm the inner bag outside protection metal ring position, fix the protection metal ring on the rubber inner bag, utilize the haulage rope of inner bag one end to place the inner bag in the section of needing to bend of large-scale pipe fitting, utilize the air pump to inflate the inner bag, and guarantee that inner bag pressure is greater than or equal to 10Mpa, utilize the bending instrument to bend large-scale pipe fitting, thereby make the inner bag under the inflated state, give the inside supporting force of large-scale pipe fitting, thereby prevent that large-scale pipe fitting from sinking in the bending process pipe fitting, influence the quality; when large-scale thin-walled pipe fittings need to be welded and butted, firstly preparing a rubber inner container, preventing the rubber inner container from being arranged between two sections of large-scale thin-walled pipe fittings, butting the two sections of pipe fittings, adjusting a protective metal ring to enable the protective metal ring to be positioned at a butt welding seam, inflating and pressing the rubber inner container, keeping pressure, welding a pipe fitting seam on the basis, releasing pressure of the rubber inner container after welding is finished, and drawing out the rubber inner container by using a traction rope.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a large-scale thin wall pipe bending, welding construction auxiliary assembly which characterized in that: the device comprises a rubber inner container (1) positioned in a bending and welding position pipe of a large-sized thin-wall pipe fitting, a protective metal ring (2) sleeved on the rubber inner container (1), a traction rope (3) fixed on the rubber inner container (1), an inflation pipe (4) used for filling inert gas into the rubber inner container (1) and an air pump (5) used for providing power for the inflation pipe (4).

2. The auxiliary device for bending and welding construction of the large-scale thin-wall pipe fitting as claimed in claim 1, wherein: the protective metal ring (2) is made of steel alloy materials, and is 50mm-100mm wide and 3mm-8mm thick.

3. The auxiliary device for bending and welding construction of the large-scale thin-wall pipe fitting as claimed in claim 1, wherein: the two traction ropes (3) are respectively fixed at two ends of the rubber inner container (1).

4. The auxiliary device for bending and welding construction of the large-scale thin-wall pipe fitting as claimed in claim 1, wherein: the inert gas is nitrogen.

5. The auxiliary device for bending and welding construction of the large-scale thin-wall pipe fitting as claimed in claim 1, wherein: the inflation tube (4) is a rubber pipeline with the diameter of 1-2 mm.

6. The auxiliary device for bending and welding construction of the large-sized thin-wall pipe fitting as claimed in any one of claims 1 to 5, wherein: the length of the rubber inner container (1) is larger than the bending section length by 2D, D is the diameter of the pipe fitting, the wall thickness of the rubber inner container (1) is 3-5 mm, the rubber inner container is made of natural rubber or synthetic rubber, and the outer diameter of the rubber inner container in an inflated state is matched with the outer diameter of the pipe fitting.