CN204148700U - A kind of remote tungsten electrode argon arc welding gun - Google Patents
A kind of remote tungsten electrode argon arc welding gun Download PDFInfo
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- CN204148700U CN204148700U CN201420510808.XU CN201420510808U CN204148700U CN 204148700 U CN204148700 U CN 204148700U CN 201420510808 U CN201420510808 U CN 201420510808U CN 204148700 U CN204148700 U CN 204148700U
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Abstract
The utility model discloses a kind of remote tungsten electrode argon arc welding gun, the Long Distance Deep Hole for exchanger tubes and tubesheets in Pressure Vessel Manufacture Process welds, and belongs to Welding Technique of Pressure Vessel field.It comprises rifle head and insulation head, barral of a gun, equipped positioning sleeve on described barral of a gun, and this positioning sleeve becomes welding wire movement locus positioner with described insulation capitiform; The length of described barral of a gun and the bobbin carriage length adaptation of welding.The utility model has the advantages that welding wire accurate positioning, weldquality excellent tungsten electrode good cooling results high without incomplete fusion phenomenon, welding efficiency, burn out rate is low, appearance of weld good, labour intensity is low.
Description
Technical field
The utility model discloses a kind of remote tungsten electrode argon arc welding gun, belong to pressure vessel technical field of welding equipment.
Background technology
Argon tungsten-arc welding is a kind of electric arc welding method utilizing inert gas (argon gas) to protect.The argon gas sprayed from nozzle causes a thick and close gas blanket to completely cut off air in welding; in the encirclement of argon gas laminar flow; electric arc burns between tungsten electrode and workpiece; utilize the heat that electric arc produces; melt welded place; and filler wire, the metal that two pieces are separated is linked together, thus obtains firmly welding point.
At present, the sealing means of the exchanger tubes and tubesheets of domestic case structure heat transmission equipment is generally that intensity is swollen or intensity is swollen+seal weld.Tube head seal weld is by the restriction of channel structure, and during welding, welding gun need stretch into by pipe plug opening the welding carrying out inside fillet in tubesheet holes, i.e. Deep Hole Welding.Conventional all positon argon tungsten-arc welding Deep Hole Welding welding gun is in welding process, there is location inconvenient, not precisely, wire feed rate instability, the easy scaling loss of tungsten electrode, poor welding quality, the problems such as easy appearance is not merged; the defect that light-wall pipe burns, and in use procedure quality accident is many.These factors limit the welding efficiency of all positon argon tungsten-arc welding Deep Hole Welding, and labour intensity is large.
Summary of the invention
The purpose of this utility model is to provide a kind of remote tungsten electrode argon arc welding gun, to solve when case structure heat transmission equipment exchanger tubes and tubesheets welds, and the problems such as traditional welding gun location is inconvenient, not accurate.
The utility model is achieved through the following technical solutions goal of the invention:
A kind of remote tungsten electrode argon arc welding gun, comprises rifle head and insulation head, barral of a gun, equipped positioning sleeve on described barral of a gun, and this positioning sleeve becomes welding wire movement locus positioner with described insulation capitiform; The length of described barral of a gun and the bobbin carriage length adaptation of welding.
The equipped gap of described positioning sleeve and described barral of a gun is 1-1.5mm; It is 1-1.5mm that described insulation head and institute's welding heat exchanger tube are equipped with gap.
Described insulation head is made up of ceramic material.
A kind of remote tungsten electrode argon arc welding gun, described rifle head also comprises a point air cushion sheet, tungsten electrode folder, tungsten electrode, copper torch body, ceramic nozzle; Described barral of a gun comprises the copper wire-feeding pipe installed in the plenum from inside to outside of the connector of front end and rear end, cooling water jacket layer, wire feed interlayer and this wire feed interlayer; Described insulation head is installed, rear end installation connecting element in the front end of described copper torch body, and the rear end face of this connector and described plenum and cooling water jacket layer fit tightly; Install by the clamping fixed tungsten electrode of tungsten electrode perpendicular to its axis in the middle part of copper torch body, the periphery suit point air cushion sheet of this tungsten electrode folder, the affixed ceramic nozzle in periphery of described copper torch body.
The utility model is by redesign to existing Deep Hole Welding welding gun structure, and the especially increase of positioner, solves traditional welding gun location inconvenient, not problem accurately.Also solve wire feed rate instability, the easy scaling loss of tungsten electrode, poor welding quality, the problems such as easy appearance is not merged, and in the defect that light-wall pipe burns, use procedure, quality accident is many, labour intensity is large simultaneously.Concrete effect is as follows compared with traditional argon tungsten-arc welding Deep Hole Welding welding gun:
1. the head that insulate adopts ceramic material, high with heat exchanger tube inwall laminating degree, with cooperatively interacting of positioning sleeve, welding gun accurate positioning, convenience, welding efficiency improve, increasing of laminating degree makes the position of welding wire angle, tungsten electrode more stable, the outside effectively can improving weld seam is shaped, inner incomplete fusion phenomenon reduces, and welding quality is better ensured.
2. the tungsten electrode folder of rifle head part, the end of the copper torch body of tungsten electrode and barral of a gun, cooling water jacket layer fit tightly, recirculated cooling water in cooling water jacket layer can effectively reduce the temperature of tungsten electrode more, prevent tungsten electrode scaling loss, welding efficiency can be improved, avoid tungsten inclusion defect occurs simultaneously, improve welding quality.
3. ceramic insulation head has good thermal conductivity, and in other positions that heat can be delivered to faster heat exchanger tube and recirculated water, light-wall pipe burns rate and declines, and weldquality improves, and the heat exchanger tube wall thickness range be suitable for is wider.
The utility model is used for the Long Distance Deep Hole welding of exchanger tubes and tubesheets in Pressure Vessel Manufacture Process.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model and pressure vessel bobbin carriage, heat exchanger tube installation diagram.
In figure: 1-fastening bolt, 2-insulation head, 3-divide air cushion sheet, 4-tungsten electrode folder, 5-tungsten electrode, the copper torch body of 6-, 7-ceramic nozzle, 8-connector, the copper wire-feeding pipe of 9-, 10-plenum, 11-cooling water jacket layer, 12-wire feed interlayer, 13-positioning sleeve, 14-rifle head, 15-tungsten electrode to press from both sides holding screw, 16-heat exchanger tube, 17-pressure vessel bobbin carriage, 18-pipe plug opening, 19-barral of a gun.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to Fig. 1,2, a kind of remote tungsten electrode argon arc welding gun, comprises rifle head 14, barral of a gun 19, positioning sleeve 13 3 part.Rifle head 14 comprises fastening bolt 1, insulation 2, point air cushion sheet 3, tungsten electrode folder 4, tungsten electrode 5, copper torch body 6, ceramic nozzle 7, tungsten electrode folder holding screw 15, and barral of a gun 19 comprises the copper wire-feeding pipe 9 installed in the plenum 10 from inside to outside of the connector 8 of front end and rear end, cooling water jacket layer 11, wire feed interlayer 12 and this wire feed interlayer 12; Described insulation 2 is installed in the front end of described copper torch body 6, rear end installation connecting element 8, the rear end face of connector 8 and described plenum 10 and cooling water jacket layer 11 is fitted tightly by the fastening bolt 1 of rifle head front end; Make the recirculated cooling water in cooling water jacket layer more can effectively reduce the temperature of tungsten electrode, prevent tungsten electrode scaling loss, can welding efficiency be improved, avoid tungsten inclusion defect occurs simultaneously, improve welding quality.
Install perpendicular to its axis in the middle part of copper torch body 6 and press from both sides 4 fixing tungsten electrodes 5 by tungsten electrode, tungsten electrode 5 is fixed by tungsten electrode folder holding screw 15 in the lower end of this tungsten electrode folder 4, the periphery suit point air cushion sheet 3 of tungsten electrode folder 4, the affixed ceramic nozzle 7 in periphery of described copper torch body 6.
The length of described barral of a gun 19 and bobbin carriage 17 length adaptation of welding, and on barral of a gun 19, be equipped with positioning sleeve 13, this positioning sleeve 13 and a described insulation 2 formation welding wire movement locus positioner.The equipped gap of described positioning sleeve 13 and described barral of a gun 19 is 1-1.5mm, in welding process, positioning sleeve 13 is inserted the pipe plug opening 18 on bobbin carriage; It is 1-1.5mm that described insulation 2 and institute's welding heat exchanger tube 16 are equipped with gap.Whole like this barral of a gun can under the cooperation of insulate head and positioning sleeve be fixing, uniform rotation, the generation of the welding gun stuck phenomenon simultaneously avoiding again the problem of interior machining accuracy to cause.Both cooperatively interacting makes the movement locus of welding wire more accurate.Avoid the local weld seam caused because movement locus is unstable to occur not merging defect.Make weld appearance, internal soundness is guaranteed.
Described insulation 2 is made up of ceramic material.And its outer end rounding off, substitute original wooden insulation head, good heat conductivity, can reduce the replacement frequency of insulation head, raise labour efficiency, better thermal diffusivity avoids the generation of burning phenomenon in thin-wall pipe welding process, improves solder yield.
The vertical welding weld seam of described tungsten electrode 5, according to the good tungsten electrode extension elongation of concrete exchanger tubes and tubesheets size adjusting and angle before welding, copper wire-feeding pipe 9 plays fixing welding wire angle, and can avoid like this needs Real Time Observation welding wire track situation in welding process, reduces the labour intensity of welder.
The center of the connector 8 of barral of a gun 19 front end has argon gas hole, and diameter is 1.5mm ~ 2mm, concrete according to the selection of welding process requirement gas flow size.Divide on air cushion sheet 3 and be uniformly distributed passage, ensure the uniformity of distribution of gas.The bore of ceramic nozzle 7 is selected according to the diameter d of tungsten electrode 5, is specially caliber size=2d+4(mm).
Claims (4)
1. a remote tungsten electrode argon arc welding gun, comprises rifle head and insulation head, barral of a gun, it is characterized in that: the upper equipped positioning sleeve (13) of described barral of a gun (19), and this positioning sleeve (13) and described insulation head (2) form welding wire movement locus positioner; The length of described barral of a gun (19) and the bobbin carriage length adaptation of welding.
2. the remote tungsten electrode argon arc welding gun of one according to claim 1, is characterized in that: the equipped gap of described positioning sleeve (13) and described barral of a gun (19) is 1-1.5mm; It is 1-1.5mm that described insulation head (2) and institute's welding heat exchanger tube are equipped with gap.
3. the remote tungsten electrode argon arc welding gun of one according to claim 1 and 2, is characterized in that: described insulation head (2) is made up of ceramic material.
4. the remote tungsten electrode argon arc welding gun of one according to claim 1, is characterized in that: described rifle head (14) also comprises a point air cushion sheet (3), tungsten electrode folder (4), tungsten electrode (5), copper torch body (6), ceramic nozzle (7); Described barral of a gun (19) comprises the copper wire-feeding pipe (9) installed in the plenum (10) from inside to outside of the connector (8) of front end and rear end, cooling water jacket layer (11), wire feed interlayer (12) and this wire feed interlayer (12); Described insulation head (2) is installed, rear end installation connecting element (8) in the front end of described copper torch body (6), and the rear end face of this connector (8) and described plenum (10) and cooling water jacket layer (11) fit tightly; Copper torch body (6) middle part is installed perpendicular to its axis and is pressed from both sides (4) fixing tungsten electrode (5) by tungsten electrode, the periphery suit point air cushion sheet (3) of this tungsten electrode folder (4), the affixed ceramic nozzle in the periphery (7) of described copper torch body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510808.XU CN204148700U (en) | 2014-09-05 | 2014-09-05 | A kind of remote tungsten electrode argon arc welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510808.XU CN204148700U (en) | 2014-09-05 | 2014-09-05 | A kind of remote tungsten electrode argon arc welding gun |
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| Publication Number | Publication Date |
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| CN204148700U true CN204148700U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420510808.XU Expired - Fee Related CN204148700U (en) | 2014-09-05 | 2014-09-05 | A kind of remote tungsten electrode argon arc welding gun |
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| CN (1) | CN204148700U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436677A (en) * | 2015-12-22 | 2016-03-30 | 洛阳隆华传热节能股份有限公司 | Deep hole pipe plate external angle welding gun |
| CN105458577A (en) * | 2016-01-08 | 2016-04-06 | 安徽理工大学 | Welding gun clamping device capable of being used for deep hole welding |
| CN105965131A (en) * | 2016-07-15 | 2016-09-28 | 大连松海石化检修工程有限公司 | In-pipe welding device and method for butt joint pipe |
| CN109434375A (en) * | 2018-12-21 | 2019-03-08 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe draw method and apparatus |
| CN110014210A (en) * | 2018-01-08 | 2019-07-16 | 兰州兰石重型装备股份有限公司 | Exchanger tubes and tubesheets inner hole butt welding welding gun head and its assembling application method |
| CN110340502A (en) * | 2018-04-04 | 2019-10-18 | 兰州兰石重型装备股份有限公司 | A kind of the inner hole argonaut welding welding machine silk filling pipette tips and its application method of the connection of exchanger tubes and tubesheets overlap joint |
| CN110756961A (en) * | 2019-11-18 | 2020-02-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | TIG welding gun for deep hole welding of pipe fitting |
-
2014
- 2014-09-05 CN CN201420510808.XU patent/CN204148700U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436677A (en) * | 2015-12-22 | 2016-03-30 | 洛阳隆华传热节能股份有限公司 | Deep hole pipe plate external angle welding gun |
| CN105458577A (en) * | 2016-01-08 | 2016-04-06 | 安徽理工大学 | Welding gun clamping device capable of being used for deep hole welding |
| CN105965131A (en) * | 2016-07-15 | 2016-09-28 | 大连松海石化检修工程有限公司 | In-pipe welding device and method for butt joint pipe |
| CN110014210A (en) * | 2018-01-08 | 2019-07-16 | 兰州兰石重型装备股份有限公司 | Exchanger tubes and tubesheets inner hole butt welding welding gun head and its assembling application method |
| CN110340502A (en) * | 2018-04-04 | 2019-10-18 | 兰州兰石重型装备股份有限公司 | A kind of the inner hole argonaut welding welding machine silk filling pipette tips and its application method of the connection of exchanger tubes and tubesheets overlap joint |
| CN109434375A (en) * | 2018-12-21 | 2019-03-08 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe draw method and apparatus |
| CN110756961A (en) * | 2019-11-18 | 2020-02-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | TIG welding gun for deep hole welding of pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20200905 |