CN208019604U - Exchanger tubes and tubesheets endoporus butt welding welding gun head - Google Patents
Exchanger tubes and tubesheets endoporus butt welding welding gun head Download PDFInfo
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- CN208019604U CN208019604U CN201820027497.XU CN201820027497U CN208019604U CN 208019604 U CN208019604 U CN 208019604U CN 201820027497 U CN201820027497 U CN 201820027497U CN 208019604 U CN208019604 U CN 208019604U
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- copper
- tungsten electrode
- gasket
- pipette tips
- welding
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Abstract
Exchanger tubes and tubesheets endoporus butt welding welding gun head, belongs to machine-building argon tungsten-arc welding field, provides the pipette tips for tube sheet endoporus butt welding.Structure includes tungsten electrode, copper tungsten electrode folder, copper mesh, copper shunting gasket, copper pipette tips main body, copper tungsten electrode puller bolt, porcelain bushing；Ceramics tongs block, ceramic gasket, ceramic fastening nut.The assembling sequence of pipette tips is：Copper pipette tips main body be (5) inserted in porcelain bushing (7) in → copper shunting gasket be (4) put into copper torch body (5) in fixed position → (3) copper mesh is placed in copper shunting gasket (4) upper → in (1) tungsten electrode being inserted into copper tungsten electrode folder (2) and adjusts extension elongation → tighten copper puller bolt (6) (10) → (8) ceramics tongs block is sleeved on to porcelain bushing (7) go up → be put into ceramic gasket (9) → tightens ceramic fastening nut.By pipette tips be installed to head (13) on, stretch into position to be welded in pore.The endoporus butt welding for the exchanger tubes and tubesheets that pore diameter is 19-70mm can be achieved, quality can ensure.
Description
Technical field
The utility model belong to a kind of argon tungsten-arc welding pipette tips in pressure vessel manufacturing field more particularly to heat exchanger tube sheet with
The type of attachment of heat exchanger tube is endoporus docking structure.
Background technology
The welding point of exchanger tubes and tubesheets mostly uses heat exchanger tube in entire petrochemical industry equipment manufacture industry and stretches out
The docking plus corner connection of tube sheet or the form of corner connection, this welding form heat exchanger tube all stretches into inside tube sheet, after the completion of welding
There are gap between tube sheet and heat exchanger tube, the medium in shell side is equipped with concentration difference in gap digit, forms electrochemistry micro cell, to
Cause crevice corrosion.Therefore easily at Tube-sheet Welding position leakage accident occurs for this welded heat exchanger.It is let out to reduce
The occurrence of dew, the welding point form that tube sheet docks complete penetraction and fusion in welding structure with heat exchange pipe orifice are come into being.This kind of structure be
A kind of joint geometry of complete penetraction and fusion in welding, antivibration dynamic fatigue strength is high, and bearing capacity is strong, and eliminates end weldering exchanger tubes and tubesheets
Between gap, improve resistance to corrosion；This kind of welding structure form joint stress concentration is small simultaneously, is not likely to produce connector root
Portion's crackle, quality of weld joint are high.Since tube sheet endoporus butt welding welding form structure is special, welding gun need to be stretched into pipe by when welding
Welding inside hole, pore diameter generally only have 19-70mm, and pipette tips are stretched into pore welding and realize difficult, while also being required
Welding gun head alignment welding position just can guarantee weld seam complete penetraction and fusion in welding, therefore the welding difficulty of tube sheet endoporus butt welding is very big, butt welding
The requirement for connecing pipette tips is high, the Tig Welding pipette tips used in this kind of welding form and common tube plate automatic tungsten anode argon arc welding
Pipette tips are very different, and there is no the pipette tips dedicated for tube sheet endoporus butt welding at present.
Invention content
The target of the utility model patent is design, manufacture special welding pipette tips, realizes the interior of exchanger tubes and tubesheets pore
Hole butt welding.
Technical solution is：
Exchanger tubes and tubesheets endoporus butt welding welding gun head, described device structure include：Tungsten electrode 1, copper tungsten electrode folder 2, copper
Silk screen 3, copper shunting gasket 4, copper pipette tips main body 5, copper tungsten electrode puller bolt 6, porcelain bushing 7；Ceramics tongs block 8, pottery
Porcelain gasket 9, ceramic fastening nut 10；The copper pipette tips main body 5 is the carrier of the other parts of entire welding gun head；Wherein
Copper tungsten electrode folder 2 is pressed on copper mesh 3 and shunting gasket 4, and copper tungsten electrode presss from both sides 2 bottoms and is provided with a "-" type seam, by tightening
Copper puller bolt 6 compresses tungsten electrode folder 2, and the gap shunk between tungsten electrode folder 2 can clamp tungsten electrode 1, while also secure 3 He of copper mesh
Copper shunts gasket 4；The venthole of 6 φ 1mm is evenly equipped on copper shunting gasket 4；Porcelain bushing 7 is sleeved on copper pipette tips main body
On 5；Ceramics tongs block 8 is sleeved on porcelain bushing 7；Ceramic gasket 9 and fastening nut 10 fix ceramics tongs block 8.
The assembling sequence of exchanger tubes and tubesheets endoporus butt welding welding gun head is：Copper pipette tips main body 5 is inserted in porcelain bushing 7
In → copper shunting gasket 4 be put into 5 fixed position of copper torch body → copper mesh 3 be placed in copper shunting gasket 4 on →
Copper is tightened by 2 insertion fixed position of copper tungsten electrode folder → tungsten electrode 1 being inserted into copper tungsten electrode folder 2 and adjusts extension elongation →
Puller bolt 6 → ceramics tongs block 8 is sleeved on porcelain bushing 7 → processed is put into ceramic gasket 9 → tighten ceramic fastening nut 10.
The application method of exchanger tubes and tubesheets endoporus butt welding welding gun head：The length for adjusting the stretching of tungsten electrode 1, assembles
Then mounted pipette tips are installed on head 13 by entire pipette tips, after regulating welding position, pipette tips are stretched into pore and are waited for
Position is welded, welding parameter is set and is welded, realizes the endoporus butt welding of tube sheet 12 and heat exchanger tube 11.
The utility model has the following advantages
1, the endoporus butt welding of exchanger tubes and tubesheets is realized.
2, gas shield is uniform, and tungsten electrode is controllable with workpiece height, and welding quality can ensure.
3, easy to assemble, maintaining is simple, and it is convenient to replace tungsten electrode.
4, weld when position it is simple and practicable, without by manual adjustment position, working efficiency can be improved.
5, manufacture is easy, at low cost, cost-effective.
Description of the drawings
Fig. 1 is general assembly schematic diagram；
Fig. 2 is fundamental diagram；
Fig. 3 is 5 schematic diagram of copper pipette tips main body；
Fig. 4 is 7 schematic diagram of porcelain bushing；
Fig. 5 is copper shunting 4 schematic diagrames of pad；
Fig. 6 is that copper tungsten electrode 2 presss from both sides schematic diagram；
Fig. 7 is 3 schematic diagram of copper mesh；
Fig. 8 is 1 schematic diagram of tungsten electrode；
Fig. 9 is 6 schematic diagram of copper puller bolt；
Figure 10 is 8 schematic diagram of ceramics tongs block；
Figure 11 is 9 schematic diagram of ceramic gasket；
Figure 12 is 10 schematic diagram of ceramic fastening nut
Wherein：1-tungsten electrode, 2-copper tungsten electrodes folder, 3-copper mesh, 4-coppers shunting gasket, 5-copper pipette tips main bodys,
6-copper tungsten electrode puller bolts, 7-porcelain bushing shells, 8-ceramics tongs blocks, 9-ceramic gaskets, 10-ceramic fastening nuts, 11-
Tube sheet, 12-heat exchanger tubes, 13-heads.
Specific implementation mode
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, exchanger tubes and tubesheets endoporus butt welding welding gun head, described device structure include：Tungsten electrode 1, copper
Tungsten electrode folder 2, copper mesh 3, copper shunting gasket 4, copper pipette tips main body 5, copper tungsten electrode puller bolt 6, porcelain bushing 7；Ceramics
Locating piece 8, ceramic gasket 9, ceramic fastening nut 10；The copper pipette tips main body 5 is the other parts of entire welding gun head
Carrier, other parts are assembled into order in pipette tips main body 5, welding rifle is realized by the mutual cooperations of these parts
The function of head；Wherein tungsten electrode 1 plays a part of that arc-melting occurs in the welding process and penetrates base material；Copper tungsten electrode folder 2 and copper
Tungsten electrode puller bolt 6 processed matches the effect for closing adjustment tungsten electrode length and fixed tungsten electrode, copper mesh, copper shunting gasket；Wherein copper
Tungsten electrode folder 2 processed is pressed on copper mesh and shunting gasket, and tungsten electrode presss from both sides 2 bottoms and is provided with a "-" type seam, is held out against by tightening copper
Bolt 6 compresses tungsten electrode folder 2, and the function of stepping up tungsten electrode 1 can be realized in the gap shunk between tungsten electrode folder；While compressing tungsten electrode folder 2
Also copper mesh 3 and copper shunting gasket 4 are secured；Copper shunts gasket 4 and carries out shunting and rising positioning tungsten to the protection gas being passed through
The effect of pole folder, shunts the venthole that 6 φ 1mm are evenly equipped on gasket, and protective gas passes through on welding gun and copper pipette tips main body
Venthole reach the space of copper shunting gasket lower part after, once divided by 6 ventholes on copper shunting gasket
Stream；Copper mesh 3 carries out second diffluence to protective gas so that protective gas can be evenly distributed on around tungsten electrode, to ensure to weld
The good protection of Resistance of Weld Metal in the stabilization and welding process of termination process；Porcelain bushing 7 be sleeved in pipette tips main body rise it is heat-insulated and
Insulating effect prevents pipette tips in welding process from overheating, while can be contacted with weldment to avoid copper pipette tips main body and generate electric arc
Scaling loss copper pipette tips main body；Ceramics tongs block 8 is sleeved on porcelain bushing 7 and plays the role of positioning, and can ensure rifle in the welding process
Head between workpiece at a distance from, prevent from influencing the continuity of welding process because tungsten electrode and workpiece distance height are uneven in welding process
And welding quality；Ceramic gasket 9 and fastening nut 10 play fixed ceramics tongs block 8.
As shown in Figure 1, the assembling sequence of welding gun head is：Copper pipette tips main body 5 is inserted in porcelain bushing 7 → copper shunting
Gasket 4 is put into 5 fixed position of copper torch body, and copper tungsten electrode is pressed from both sides 2 by → copper mesh 3 is placed on copper shunting gasket 4 →
Be inserted into fixed position in → by tungsten electrode 1 be inserted into copper tungsten electrode folder 2 in and adjust extension elongation → tighten copper puller bolt 6 →
Ceramics tongs block 8 is sleeved on porcelain bushing 7 to → being put into ceramic gasket 9 → and tightens ceramic fastening nut 10.
Operating method adjusts tungsten electrode as shown in Fig. 2, by assembled exchanger tubes and tubesheets endoporus butt welding welding gun head
1 length stretched out, is then mounted on head 13, pipette tips is stretched into position to be welded in pore, after adjusting welding parameter
Realize the endoporus butt welding of tube sheet 12 and heat exchanger tube 11.
Claims (1)
1. exchanger tubes and tubesheets endoporus butt welding welding gun head, it is characterized in that：Including tungsten electrode (1), copper tungsten electrode folder (2), copper mesh
(3), copper shunting gasket (4), copper pipette tips main body (5), copper tungsten electrode puller bolt (6), porcelain bushing (7)；Ceramics tongs block (8),
Ceramic gasket (9), ceramic fastening nut (10)；(5) the copper pipette tips main body is the carrier of the other parts of entire welding gun head；
Wherein copper tungsten electrode folder be (2) pressed in copper mesh (3) with shunting gasket (4) on, (2) bottom is provided with "-" type seam to copper tungsten electrode folder,
Tungsten electrode folder is (6) compressed by tightening copper puller bolt (2), and (1) the gap between shrinking tungsten electrode folder (2) can clamp tungsten electrode, while also solid
Determine copper mesh and (3) shunts gasket (4) with copper；Copper shunting gasket (4) on be evenly equipped with the venthole of 6 φ 1mm；Porcelain bushing
(7) be sleeved on copper pipette tips main body (5) on；Ceramics tongs block be (8) sleeved on porcelain bushing (7) on；Ceramic gasket is (9) (10) solid with fastening nut
Determine ceramics tongs block (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820027497.XU CN208019604U (en) | 2018-01-08 | 2018-01-08 | Exchanger tubes and tubesheets endoporus butt welding welding gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820027497.XU CN208019604U (en) | 2018-01-08 | 2018-01-08 | Exchanger tubes and tubesheets endoporus butt welding welding gun head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208019604U true CN208019604U (en) | 2018-10-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820027497.XU Expired - Fee Related CN208019604U (en) | 2018-01-08 | 2018-01-08 | Exchanger tubes and tubesheets endoporus butt welding welding gun head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208019604U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110035596A (en) * | 2019-05-29 | 2019-07-19 | 马榕彬 | Transferred arc plasma torch is used in a kind of production of metal nano powder |
| CN111558764A (en) * | 2020-05-22 | 2020-08-21 | 株洲天一自动焊接装备有限公司 | Turbine shell rocker arm welding method |
| CN113399794A (en) * | 2021-06-28 | 2021-09-17 | 上海电气电站设备有限公司 | Special gas protection device for small-diameter pipe and tube plate inner hole welding |
-
2018
- 2018-01-08 CN CN201820027497.XU patent/CN208019604U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN110035596A (en) * | 2019-05-29 | 2019-07-19 | 马榕彬 | Transferred arc plasma torch is used in a kind of production of metal nano powder |
| CN111558764A (en) * | 2020-05-22 | 2020-08-21 | 株洲天一自动焊接装备有限公司 | Turbine shell rocker arm welding method |
| CN113399794A (en) * | 2021-06-28 | 2021-09-17 | 上海电气电站设备有限公司 | Special gas protection device for small-diameter pipe and tube plate inner hole welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 Termination date: 20210108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |