CN217799522U

CN217799522U - Gas protection device for welding

Info

Publication number: CN217799522U
Application number: CN202221912068.3U
Authority: CN
Inventors: 郭东晓; 赵东阳; 万纪总; 胡鹏飞; 高建杰
Original assignee: Luoyang Kepin Industrial Co ltd
Current assignee: Luoyang Kepin Titanium Industry Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-15
Anticipated expiration: 2032-07-21

Abstract

The utility model relates to a gas protection device for welding, including the pipeline with flow equalize the piece, flow equalize the piece setting and be in the middle part of pipeline and with pipeline fixed connection be equipped with a plurality of diffluent orifices on the piece of flow equalizing the outlet side of diffluent orifice, be equipped with bar welding mouth and grid tray inserted hole on the pipeline, bar welding mouth and grid tray inserted hole all follow the extending direction setting of the central line of pipeline. When the gas shielding plate is used, the grid plate is inserted into the grid plate insertion opening, and the turning seam of the grid plate is welded on one side of the strip-shaped welding opening, so that gas flow beams can flow through the connecting seam of at least two grid plates, and gas shielding is provided.

Description

Gas protection device for welding

Technical Field

The utility model relates to a welding is with instrument technical field, concretely relates to gas protection device for welding.

Background

In order to prevent the titanium alloy castings from being oxidized in the welding process, argon is required to protect the titanium alloy castings, a gas pipe is usually connected to an argon arc welding gun, the welding surface can be continuously protected during welding, and in the practical application process, when the thin-wall regions, the through hole regions, the corner regions and the like of the castings are welded, the casting repair welding regions cannot be completely protected simply by means of the argon on the welding gun.

Patent document CN212946025U discloses a gas protection device for welding of large-thickness titanium alloy plate narrow gap laser filler wire, the gas protection device includes air supply copper pipe, the terminal lateral wall of air supply copper pipe is equipped with bilateral symmetry's through-hole, the gas protection device still includes universal joint and keysets, air supply copper pipe sets up in the keysets, the one end and the keysets detachable connection of universal joint, the keysets is equipped with the copper pipe standing groove, air supply copper pipe inserts in the copper pipe standing groove. According to the technical scheme, the air supply copper pipe row arranged in a long strip shape is adopted, and obviously, the copper pipe row is used for welding long strip-shaped welding seams.

Patent document CN208743980U discloses a welding gas protection device, which includes: the gas hood is provided with a first side surface and a second side surface which are oppositely arranged; the welding gun is connected with the gas hood and extends in the direction from the first side surface to the second side surface; and the connecting rod component is arranged on the second side surface of the gas hood and is used for applying acting force in a preset direction to the gas hood under the action of the welding head, so that the gas hood can closely attach to the pipeline to walk, and the angle of the welding gun can be adjusted in a radial plane of a welding seam where the pipeline to be welded is located. In the technical scheme, the first side surface is in an arc shape attached to the side surface of the pipeline, and obviously, the first side surface is used for welding a welding seam of the end surface of the pipeline.

During actual welding, the welding seam still exists in edges and corners, and the gas protection device can not provide a gas protection function during welding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gas shield for welding to provide gas shield when welding edges and corners or turning round.

The technical scheme of the utility model is that:

the utility model provides a gas protection device for welding, includes the pipeline and flow equalizes the piece, flow equalize the piece setting and be in the middle part of pipeline and with pipeline fixed connection be equipped with a plurality of diffluence holes on the piece of flow equalizing the outlet side of diffluence hole, be equipped with bar welding mouth and grid tray inserted hole on the pipeline, bar welding mouth and grid tray inserted hole are all followed the extending direction setting of the central line of pipeline.

Preferably, the central line of the pipeline is arranged on a straight line from the inlet side of the diversion hole to the outlet end of the pipeline, and the diversion hole is a straight hole arranged in parallel with the straight line.

Preferably, at the outlet side of the diversion hole, the pipeline is a flared bell pipe, and the included angle between the pipe wall of the flared bell pipe and the central line of the pipeline is less than or equal to 5 degrees.

Preferably, the pipe is a titanium alloy pipe.

Preferably, one of the strip-shaped welding openings is provided, and at least one of the grid plate insertion openings is provided.

The utility model has the advantages that:

1. the flow equalizing piece is arranged in the middle of the pipeline and fixedly connected with the pipeline, and a plurality of shunting holes are formed in the flow equalizing piece, so that protective gas filled from the inlet side of the pipeline can be divided into a plurality of uniformly distributed gas flows when flowing through the flow equalizing piece. Referring to fig. 4, in use, the grid is inserted into the grid insertion opening and the corner seams of the grid are welded to one side of the strip weld, so that the gas stream flows through the joint seams of at least two grids, thereby providing gas shielding.

2. The central line of the pipeline is arranged on a straight line from the inlet side of the shunting hole to the outlet end of the pipeline, and the shunting hole is a straight hole which is arranged in parallel to the straight line. Like this, the piece preparation degree of difficulty that flow equalizes is low, and the pipeline is minimum to the influence of the air current of penetrating from flow equalizing.

3. The titanium alloy pipe is high temperature resistant, so that the titanium alloy can be welded by matching the gas protection device for welding with the titanium alloy welding gun.

Drawings

Fig. 1 is a perspective view of a gas protection apparatus for welding.

FIG. 2 is a front view of a gas shield for welding.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a reference diagram showing a state of use of the gas protection apparatus for welding.

The reference numbers indicate that 1-pipeline, 10-pipe cavity, 11-pipe joint, 12-strip-shaped opening, 13-guide pipe wall, 2-flow equalizing piece, 21-flow dividing hole, 31-titanium alloy plate A, 32-titanium alloy plate B and 33-titanium alloy plate C.

Detailed Description

The present invention is described below in terms of embodiments with reference to the accompanying drawings to assist those skilled in the art in understanding and realizing the invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.

Example 1: a gas protection device for welding, see fig. 1-3, comprises a pipeline 1 and a flow equalizing piece 2.

In this embodiment, the gas protection device for welding is used to assist the welding gun in welding titanium alloy, and in order to reduce the damage of welding torch flame to the device, a titanium alloy pipe is used as the pipe. In other embodiments, suitable materials may be selected based on the welding environment.

Referring to fig. 3, the pipe may be a non-variable diameter pipe or a variable diameter pipe. Fig. 3 shows a pipe in which the inlet side of the pipe is provided with a pipe connection 11.

Flow equalizing piece 2 sets up in the middle part of pipeline 1 and with pipeline 1 fixed connection, is equipped with a plurality of diffluence holes 21 on flow equalizing piece 2, at the outlet side of diffluence hole 21, is equipped with bar mouth 12 on the pipeline 1, and bar mouth 12 sets up along the extending direction of pipeline 1's central line. The strip port 12 is distinguished by the design of the strip weld port and the grid plate insertion port. Referring to fig. 4, a titanium alloy plate B32 and a titanium alloy plate C33 are welded to the upper side and the lower side of the titanium alloy plate a31, the titanium alloy plate a31 and the titanium alloy plate B32 are inserted into the grid plate insertion opening, the upper right corner of the titanium alloy plate C33 and the titanium alloy plate a31 is a weld joint, the corresponding strip-shaped opening is a strip-shaped weld opening, and the strip-shaped weld opening has the function of avoiding obstructing the welding operation. The left side of the titanium alloy plate A31 and the strip-shaped opening into which the titanium alloy plate B32 is inserted are grid plate insertion openings, the grid plate insertion openings are used for arranging grid plates, and the pipe walls forming the grid plate insertion openings are used for guiding air flow. During welding, the shielding gas beam flowing out of the diversion hole 21 is blown out along the connecting seam of the titanium alloy plate A31, the titanium alloy plate B32 and the titanium alloy plate C33, the connecting seam is the corner or corner to be welded, and the shielding gas covers the connecting seam.

Referring to fig. 1, the duct 1 is provided with a strip-shaped opening 12, and the protruded duct wall forms a guide duct wall 13.

In this embodiment, the central line of the pipe 1 is arranged on a straight line from the inlet side of the diversion hole 21 to the outlet end of the pipe 1, and the diversion hole 21 is a straight hole arranged parallel to the straight line.

In this embodiment, three strip-shaped welding openings 12 are uniformly arranged on the pipe wall of the pipeline.

Example 2: a gas protection device for welding comprises a pipeline and a flow equalizing piece. This embodiment is largely the same as embodiment 1, except that in embodiment 1, at the outlet side of the branch flow hole, the pipe is a non-reducing pipe, however, in this embodiment, at the outlet side of the diversion hole, the pipeline is a flared flare, and an included angle between the pipe wall of the flared flare and the central line of the pipeline is not more than 5 °.

The present invention has been described in detail with reference to the accompanying drawings and examples. It should be understood that in practice the description of all possible embodiments is not exhaustive and that the inventive concepts are presented herein by way of illustration as much as possible. Without departing from the inventive concept of the present invention and without paying creative labor, technical personnel in the technical field can make up the technical features in the above embodiments, make experimental changes of specific parameters, or use the prior art in the technical field to the specific embodiments of the present invention that the disclosed technical means are formed by conventional replacement, all belong to the content of the present invention.

Claims

1. The utility model provides a gas protection device for welding, includes the pipeline and flow equalizes the piece, flow equalize the piece setting and be in the middle part of pipeline and with pipeline fixed connection be equipped with a plurality of diffluence holes on the piece of flow equalizing the outlet side of diffluence hole, its characterized in that, be equipped with bar welding mouth and grid tray inserted hole on the pipeline, bar welding mouth and grid tray inserted hole are all followed the extending direction setting of the central line of pipeline.

2. The gas protecting device for welding as set forth in claim 1, wherein the center line of said pipe is disposed on a straight line from the inlet side of said flow dividing hole to the outlet end of said pipe, said flow dividing hole being a straight hole disposed parallel to said straight line.

3. The gas protecting device for welding according to claim 1, wherein at an outlet side of the branch hole, the pipe is a flared flare pipe, and an included angle between a pipe wall of the flared flare pipe and a center line of the pipe is less than or equal to 5 °.

4. The gas shield for welding according to claim 1, wherein said pipe is a titanium alloy pipe.

5. The gas shield for welding as recited in claim 1, wherein one of said strip-shaped welding openings is provided, and at least one of said louver insertion openings is provided.