CN212094784U

CN212094784U - TIG welding gun

Info

Publication number: CN212094784U
Application number: CN202020707963.6U
Authority: CN
Inventors: 唐彬; 卢志龙; 马耀清; 葛圣杰
Original assignee: Shanghai Wujing Power Engineering Co ltd; Shanghai Electric Power Co ltd Wujing Thermal Power Plant
Current assignee: Shanghai Electric Power Co ltd Wujing Thermal Power Plant
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-08
Anticipated expiration: 2030-04-30

Abstract

The utility model provides a TIG welder, include: a torch body that is flat; the head of the welding gun main body is provided with a conductive nozzle, and a tungsten electrode mounting structure is arranged in the conductive nozzle; an air inlet pipe is arranged in the welding gun main body, and one end of the air inlet pipe is positioned at the head of the welding gun main body; the side edge of the welding gun main body is connected with a wire feeding pipe, and one end of the wire feeding pipe is positioned at the head of the welding gun main body and faces the conductive nozzle; and an insulating high-temperature-resistant layer is arranged on the surface of the welding gun main body. Through adopting the utility model discloses a novel structure of TIG welder, its front end platykurtic structure has solved in the full penetration of welding structure of big thick wall work piece under the small-angle groove condition when welding is carried out in dark and narrow welding position welder angular adjustment difficulty and the dead angle of appearing welding easily and touching welding work piece scheduling problem, has solved welder external insulation and has born long-time high temperature and thermal radiation scheduling problem.

Description

TIG welding gun

Technical Field

The utility model relates to a welding equipment field specifically, relates to a TIG welder, especially a high temperature resistance water-cooling TIG welder.

Background

The generator set develops towards the direction of high capacity, high parameter, high efficiency, environmental protection and energy conservation, and the heat efficiency of the generator set can be effectively improved by improving the steam temperature and pressure of the generator set, so that energy conservation and emission reduction are realized. Therefore, high-temperature alloys such as SA335-P91/92/93, G115, C-276, Inconel625, Inconel617, Inconel740H, Monel400 and the like are widely applied to pipelines of power stations and important equipment and parts. The welding and cutting processes for such steel grades are complex and critical.

For a large truncated edge and gapless Y-shaped weld bead, the filling amount is smaller than that of narrow gap welding, when large thick-wall high-temperature alloy welding is carried out, the welding position needing TIG filling is deep and narrow, the swinging and angle adjustment of a welding gun is difficult, and the welding dead angle is easy to appear. Meanwhile, when welding large and thick martensitic heat-resistant steels such as SA335-P91/92/93 and G115, it is necessary to preheat a workpiece at a constant temperature and maintain the temperature (200 ℃ to 250 ℃). Therefore, higher demands are made on an automated TIG welding gun.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a TIG welder.

According to the utility model provides a pair of TIG welder, include: a torch body 119, the torch body 119 being flat;

the head of the welding gun main body 119 is provided with a contact tip 105, and a tungsten electrode mounting structure is arranged in the contact tip 105;

an air inlet pipe is arranged inside the welding gun main body 119, and one end of the air inlet pipe is positioned at the head of the welding gun main body 119;

a wire feeding pipe 110 is connected to the side of the welding gun body 119, and one end of the wire feeding pipe 110 is positioned at the head of the welding gun body 119 and faces the contact tip 105;

the surface of the torch body 119 is provided with an insulating high-temperature resistant layer 117.

Preferably, a cooling water pipe 115 is further disposed in the welding gun body 119, and both ends of the cooling water pipe 115 are disposed at the tail of the welding gun body;

one end of the cooling water pipe 115 is connected with the water inlet pipe connector 103, and the other end is connected with the water return pipe connector 104.

Preferably, the tungsten electrode mounting structure includes: tungsten electrode mounting holes 108 and clamping bolts 107;

the tungsten electrode 106 is disposed in the mounting hole 108, and the top of the clamping bolt 107 is screwed into the contact tip 105, so that the tungsten electrode 106 can be pressed and fixed.

Preferably, the wire feeding tube 110 is connected to the side of the torch body by a wire feeding tube holder 112.

Preferably, a plurality of fixing screw holes 116 are formed in a side of the welding gun body 119, and the wire feed tube holder 112 is coupled to the fixing screw holes 116 by fixing bolts 111.

Preferably, the other end of the air inlet pipe is arranged at the tail part of the welding gun main body 119 and is connected with an air inlet pipe interface.

Preferably, the TIG welding gun further includes: and an insulating clamp 118, wherein the insulating clamp 118 is connected to a connecting thread 120 at the tail part of the welding gun main body 119.

Preferably, the other end of the wire feeding pipe 110 is connected with a wire feeding pipe interface 109.

Preferably, the end of the inlet pipe leads to the contact tip 105.

Preferably, the thickness of gun body 119 is not less than 8mm, and the length is not less than 200 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. through adopting the utility model discloses a novel structure of TIG welder, its front end platykurtic structure has solved in the full penetration of welding structure of big thick wall work piece under the low-angle groove condition welder angular adjustment difficulty and appear welding dead angle and touching welding workpiece scheduling problem easily when welding in dark and narrow welding position, has reached the effect of automatic welding requirement.

2. The compact aluminum oxide coating formed on the outer surface of the TIG welding gun solves the problems of external insulation of the welding gun, long-time high temperature bearing, heat radiation and the like, achieves the high-efficiency and high-quality welding effect of the welding gun under the long-time high-temperature working condition, and can realize the cooperative work of welding and heat treatment.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a front view of the present invention;

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

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the utility model provides a TIG welding gun, include: the welding torch is provided with a torch body 119 and an insulating holder 118, wherein the torch body 119 is flat, and the insulating holder 118 is connected to a connection thread 120 at the tail of the torch body 119.

The air inlet pipe interface 101 is connected with external welding gas, is matched with the air inlet pipe 113 and supplies air to a welding part; the inlet pipe connection 102 is connected to external welding gas, and is engaged with the inlet pipe 114 to supply gas to a welding portion. Thus, a stable and uniform welding gas chamber is formed at the welding portion around the tungsten electrode 106.

The air inlet pipe connector 101, the air inlet pipe connector 102, the air inlet pipe 113 and the air inlet pipe 114 are made of 6mm copper tubes and pipe fittings, and are used as electrodes to be connected with an external welding power supply, so that good conductivity is kept.

The water inlet pipe connector 103, the water return pipe connector 104 and the cooling water pipe 115 are also made of 6mm red copper pipes and pipe fittings and are connected with an external circulating cooling water tank. Cooling water enters from the water inlet pipe connector 103, flows out from the water return pipe connector 104 through the cooling water pipe 115, and circularly cools the welding gun.

The wire feed pipe 110 is fixed to the side surface of the torch body by the wire feed pipe holder 112 using the fixing bolt 111 and the fixing screw hole 116. The wire feed tube interface 109 is connected to an external wire feed system, and cooperates with the wire feed tube 110 to stably feed welding wire to the welding site.

The torch body 119 is made of a copper plate material having a thickness not less than 8mm and a length not less than 200mm, and is grooved and processed to fit the inlet pipe joint 101, the inlet pipe joint 102, and the cooling water pipe 115, and fixed by silver brazing.

The tungsten electrode 106 fitted in the tungsten electrode fitting hole 108 is fixed by a clamp bolt 107. And is connected with the contact tip 105 and the welding gun body 119 by screw threads to form a loop and guide welding current.

The front end of the torch body 119 is chamfered to prevent the welding work from being touched during welding. And aluminum oxide is integrally sprayed outside the welding gun main body 119 to form an insulating high temperature resistant layer 117, so that the TIG welding gun is insulated from the outside and bears high temperature, and the integral spraying thickness is 0.5 mm. The high-temperature-resistant welding gun can not only ensure that the TIG welding gun has good insulating property, but also bear thermal radiation (can bear the highest high temperature of more than 1000 ℃) under the high-temperature welding condition, and ensure the high-efficiency welding of the automatic TIG welding gun under the long-time high-temperature working condition.

An insulating holder 118 is connected to the end of a torch body 119 by a connecting screw 120, and is firmly and electrically insulated from the automatic equipment.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A TIG welding gun, comprising: a torch body (119), the torch body (119) being flat;

the head of the welding gun main body (119) is provided with a contact tube (105), and a tungsten electrode mounting structure is arranged in the contact tube (105);

an air inlet pipe is arranged inside the welding gun main body (119), and one end of the air inlet pipe is positioned at the head of the welding gun main body (119);

a wire feeding pipe (110) is connected to the side edge of the welding gun body (119), and one end of the wire feeding pipe (110) is positioned at the head of the welding gun body (119) and faces the contact tip (105);

and an insulating high-temperature-resistant layer (117) is arranged on the surface of the welding gun main body (119).

2. A TIG welding gun according to claim 1, wherein a cooling water pipe (115) is further provided in the welding gun body (119), and both ends of the cooling water pipe (115) are provided at the tail of the welding gun body;

one end of the cooling water pipe (115) is connected with the water inlet pipe connector (103), and the other end is connected with the water return pipe connector (104).

3. A TIG welding gun according to claim 1, wherein the tungsten electrode mounting structure includes: a tungsten electrode mounting hole (108) and a clamping bolt (107);

the tungsten electrode (106) is arranged in the mounting hole (108), the top of the clamping bolt (107) is screwed in the contact tube (105), and the tungsten electrode (106) can be pressed and fixed.

4. A TIG welding gun according to claim 1, characterized in that the wire feed tube (110) is connected to the side of the gun body by a wire feed tube holder (112).

5. TIG welding gun according to claim 4 characterized in that the side of the gun body (119) is provided with a plurality of fixing screw holes (116), and the wire feed tube holder (112) is attached in the fixing screw holes (116) by fixing bolts (111).

6. A TIG welding gun according to claim 1, characterized in that the other end of the inlet pipe is arranged at the tail of the welding gun body (119) and connected with an inlet pipe interface.

7. A TIG welding gun according to claim 1, further comprising: an insulating clamp (118), the insulating clamp (118) being attached to an attachment thread (120) on the tail of the torch body (119).

8. TIG welding gun according to claim 1, characterised in that the other end of the wire feed tube (110) is connected with a wire feed tube interface (109).

9. TIG welding gun according to claim 1, characterised in that the end of the inlet tube leads to the contact tip (105).

10. A TIG welding gun according to claim 1, characterized in that the thickness of the gun body (119) is no more than 8mm, and the length is no less than 200 mm.