CN218800019U

CN218800019U - Welding internal protection device

Info

Publication number: CN218800019U
Application number: CN202222937326.XU
Authority: CN
Inventors: 董毛毛; 王敬娜; 张俊杰
Original assignee: Meide Yachang Hebi Pipe Industry Co ltd
Current assignee: Meide Yachang Hebi Pipe Industry Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-04-07
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a protection device in welding relates to welding protection device technical field, including the connecting piece, the connecting plate is all installed to the both sides face of connecting piece, and the top of connecting piece is provided with air-feed pipe and arc protection shield, and the both ends of air-feed pipe and the both ends subsection of arc protection shield are installed on two connecting plates, set up the aspirated hole that the equidistance was arranged on the air-feed pipe, all are provided with the closing plate on two connecting plates. The utility model relates to a rational in infrastructure, it sets up through the cooperation between blast pipe, venthole, arc protection shield and the connection trachea, utilizes the connection trachea to carry protective gas to the blast pipe in to form a protection space through arc protection shield and welding seam department contact, under the effect of venthole, make protective gas be full of whole protection space, required space when can reducing the protection of welding seam department, thereby reduce gaseous use amount.

Description

Welding internal protection device

Technical Field

The utility model relates to a welding protection device technical field specifically is a protection device in welding.

Background

When tubulation welding, the crater position is in the high temperature situation, if very easily oxidation phenomenon appears to crater position protection, the regional composition of oxidation is changed (mainly for chromium content reduces) for local corrosion resistance reduces, reduces product life, and outer welding kneck cinder can be polished and get rid of totally, does not influence life, and interior crater is difficult for polishing, and the change of crater department composition influences life, and the inside protective gas that must use of crater protects the welding department.

Traditional protection mode is whole protection, and demand protective gas volume is great, and production auxiliary material cost is higher, especially to producing heavy-calibre tubular product, and weld mouthful department high temperature, ordinary material can't resist, very easily high temperature appears and melts and the phenomenon of burning, causes the weld to be bad and can't use. Therefore, a welding inner protection device is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

One) technical problem to be solved

The utility model aims at providing a protection device in welding in order to compensate the not enough of prior art.

II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a protection device in welding, includes the connecting piece, the connecting plate is all installed to the both sides face of connecting piece, the top of connecting piece is provided with induction-pipe and arc protection shield, the both ends of induction-pipe with the both ends subsection of arc protection shield is installed on two connecting plates, set up the air feed hole that the equidistance was arranged on the induction-pipe, two all be provided with the closing plate on the connecting plate, be provided with on the connecting plate and be used for the spacing fixed subassembly of closing plate, the top of connecting piece is provided with the connecting pipe, the tracheal one end of connecting is linked together with the induction-pipe.

Furthermore, the fixing assembly comprises two fixing bolts and two fixing gaskets, the fixing bolts and the fixing gaskets are installed on the connecting plate, through holes matched with the fixing bolts are formed in the fixing gaskets, the sealing plate is arranged between the fixing gaskets and the connecting plate, and fixing nuts are connected to the fixing bolts through threads.

Furthermore, a pull pipe is installed on the connecting plate, and one end, far away from the air supply pipe, of the connecting air pipe penetrates through the connecting plate and is provided with a quick connector.

Furthermore, two supporting blocks are installed on the connecting piece, the upper surfaces of the two supporting blocks are installed on the bottom surface of the arc-shaped protection plate, a protection block is further installed on the connecting piece, and the connecting air pipe is located in the protection block.

Thirdly), the beneficial effects are that:

compared with the prior art, the welding internal protection device has the following beneficial effects:

1. the utility model discloses a cooperation setting between induction pipe, air feed hole, arc protection shield and the connecting pipe utilizes connecting pipe to carry protective gas to the induction pipe to through arc protection shield and the contact of welding seam department formation protection space, under the effect of air feed hole, make protective gas be full of whole protection space, required space when can reducing the protection of welding seam department, thereby reduce gaseous use amount.

2. The utility model discloses a cooperation setting between closing plate, fixed subassembly and the quick-operation joint utilizes fixed subassembly to install the closing plate to the connecting plate on, promotes the leakproofness of protection device in the pipe fitting to reduce gaseous loss volume, and can conveniently be connected with outside air supply through the quick-operation joint, conveniently change the use.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention.

In the figure: 1. a connecting member; 2. a connecting plate; 3. an air supply pipe; 4. an air supply hole; 5. an arc-shaped protection plate; 6. a sealing plate; 7. fixing the bolt; 8. a protection block; 9. a supporting block; 10. connecting an air pipe; 11. a quick coupling; 12. pulling the tube; 13. fixing a gasket; 14. and fixing the nut.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a technical solution: the utility model provides a protection device in welding, including connecting piece 1, connecting plate 2 is all installed to connecting piece 1's both sides face, connecting piece 1's top is provided with induction pipe 3 and arc protection shield 5, install on two connecting plates 2 at the both ends of induction pipe 3 and the both ends subsection of arc protection shield 5, high temperature silica gel piece is chooseed for use to arc protection shield 5, high temperature resistant not only, and better with pipe wall contact back leakproofness, set up the air feed hole 4 that the equidistance was arranged on induction pipe 3, the quantity and the interval of air feed hole 4 can be adjusted according to the actual production demand, all be provided with closing plate 6 on two connecting plates 2, high temperature silica gel piece is also chooseed for use to closing plate 6, closing plate 6 is two at least.

Be provided with on connecting plate 2 and be used for the spacing fixed subassembly to closing plate 6, fixed subassembly includes two fixing bolt 7 and the fixed shim 13 of installing on connecting plate 2, set up on the fixed shim 13 with fixing bolt 7 assorted through-hole, closing plate 6 sets up between fixed shim 13 and connecting plate 2, threaded connection has fixation nut 14 on the fixing bolt 7, set up on the closing plate 6 with fixing bolt 7 assorted hole, can install closing plate 6 to fixing bolt 7 earlier, place fixation shim 13 on fixing bolt 7 again, and finally, with fixation nut 14 spiral mounting to fixing bolt 7, and consolidate fixation shim 13, make closing plate 6 can be firm install between fixation shim 13 and connecting plate 2.

Connecting piece 1's top is provided with connecting trachea 10, connecting trachea 10's one end is linked together with air feed pipe 3, install trombone slide 12 on the connecting plate 2, can conveniently stimulate connecting plate 2 through trombone slide 12, connecting trachea 10 keeps away from the one end of air feed pipe 3 and runs through connecting plate 2 and install quick-operation joint 11, can conveniently be connected with outside air supply through quick-operation joint 11, conveniently change the use, install two supporting shoes 9 on the connecting piece 1, the upper surface of two supporting shoes 9 is all installed in the bottom surface of arc protection shield 5, still install protection piece 8 on the connecting piece 1, connecting trachea 10 is located protection piece 8.

The working principle is as follows: when the pipe fitting needs to be welded and protected, firstly, the whole protection device is placed in the pipe fitting by using the pull pipe 12, the air supply pipe 3 is aligned to the welding position of the pipe fitting, at the moment, a protection space is formed between the arc protection plate 5 and the welding position, the sealing plate 6 is released from the inner wall of the pipe fitting, the sealing performance of the protection device in the pipe fitting is improved, and therefore the loss amount of gas is reduced, then, the connecting air pipe 10 is communicated with an external air source by using the quick connector 11, the protection gas is conveyed into the air supply pipe 3 through the connecting air pipe 10, and finally, the protection gas enters the protection space formed between the arc protection plate 5 and the welding position through the air supply hole 4, the space required for protecting the welding position can be reduced, and the using amount of the gas is reduced.

Claims

1. A protection device in welding, includes connecting piece (1), its characterized in that: connecting plates (2) are installed on two side faces of the connecting piece (1), an air supply pipe (3) and an arc-shaped protection plate (5) are arranged above the connecting piece (1), two ends of the air supply pipe (3) and two ends of the arc-shaped protection plate (5) are installed on the two connecting plates (2) in a distributed mode, air supply holes (4) which are arranged equidistantly are formed in the air supply pipe (3), sealing plates (6) are arranged on the connecting plates (2), fixing assemblies used for limiting the sealing plates (6) are arranged on the connecting plates (2), a connecting air pipe (10) is arranged above the connecting piece (1), and one end of the connecting air pipe (10) is communicated with the air supply pipe (3).

2. The weld inner protection device according to claim 1, wherein: the fixing assembly comprises two fixing bolts (7) and two fixing gaskets (13) which are arranged on the connecting plate (2), through holes matched with the fixing bolts (7) are formed in the fixing gaskets (13), the sealing plate (6) is arranged between the fixing gaskets (13) and the connecting plate (2), and fixing nuts (14) are connected to the fixing bolts (7) through threads.

3. The weld inner protection device according to claim 1, wherein: the connecting plate (2) is provided with a pull pipe (12), and one end of the connecting air pipe (10) far away from the air supply pipe (3) penetrates through the connecting plate (2) and is provided with a quick connector (11).

4. The weld inner protection device according to claim 1, wherein: the connecting piece is characterized in that two supporting blocks (9) are installed on the connecting piece (1), the upper surfaces of the two supporting blocks (9) are installed on the bottom surface of the arc-shaped protecting plate (5), a protecting block (8) is further installed on the connecting piece (1), and the connecting air pipe (10) is located in the protecting block (8).