CN206536113U - A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet - Google Patents
A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet Download PDFInfo
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- CN206536113U CN206536113U CN201720028950.4U CN201720028950U CN206536113U CN 206536113 U CN206536113 U CN 206536113U CN 201720028950 U CN201720028950 U CN 201720028950U CN 206536113 U CN206536113 U CN 206536113U
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Abstract
A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet of the present utility model, its structure includes importing lumen, insulate lumen and nozzle assembly, one end of insulation lumen end solid with importing lumen is affixed, the length of arc welding gun head is so lengthened by importing lumen, consequently facilitating realizing the deep hole welding of tube sheet, copper seat is connected with the cavity of the other end of insulation lumen, copper seat is affixed with nozzle assembly, nozzle assembly includes tungsten electrode, the point of tungsten electrode includes the first rounding and the second rounding, the angle of second rounding is more than the angle of the first rounding, double roundings at tungsten electrode tip can concentrate electric arc, the quick junction by tube sheet and heat exchanger tube is conducive to penetrate, automatic welding pipette tips of the present utility model also include arc voltage tracker, the change of arc voltage when arc voltage tracker can detect welding in real time, and then adjust the position of tungsten electrode, so that in the case where penetrating as early as possible, effectively prevent the generation of burn-through phenomenon.
Description
Technical field
The utility model is related to the skill of the used automatic welding pipette tips of boiler plant welding in oil and coal chemical technology
Art field, more particularly to a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet.
Background technology
Energy-conservation is that one of key factor of sustainable development is capable of in a country, and traditional power save mode can not have resource
Effect is recycled, and this will make the whole resource environment of society exacerbated, and cause the quick exhaustion of the energy.Technique steam pot
Stove but employs a kind of power save mode of new reusable edible resource, and concrete mode is that boiler utilizes institute in various industrial process
Heat in the process gas of generation is heated to water required degree, and technique gas boiler is that current energy realization is recycled
Important device.
At present, for technique gas boiler arrival end tube sheet and the attachment structure of heat exchanger tube typically has welding and expanded joint, but
It is that the weld seam formed using conventional welding structure typically has gap, the problems such as easily producing crevice corrosion, overheat, and
And the thermal stress produced at welding point is likely to result in stress corrosion and rupture, and expansion-joint structure form is used, due to swollen
Connect deformation and there is larger residual stress, be also easy to produce stress corrosion, and when temperature in use is higher, the creep of material makes expanded joint
Residual stress relaxation, and then cause joint looseness or come off, so that leakage is caused, it follows that normal welding structure and expanded joint
Structure is not suitable under hot environment, and because the process gas of the arrival end of technique gas boiler may be up to 920 DEG C.In this height
Under warm operating mode, conventional tube sheet and the welding structure of heat exchanger tube and expansion-joint structure easily fail, in order to meet high temperature hostile
Applying working condition, by the tube head welding seam design of the tube sheet of technique gas boiler and heat exchanger tube into shell-and-tube thin tubesheet deep hole welding structure, is managed
Shell-type thin tubesheet deep hole welding structure can guarantee that the tube head weld seam of tube sheet and heat exchanger tube can obtain the direct cooling of shell side water, and then drop
Low weld seam temperature, it is to avoid tube head weld seam fails under worst hot case.
At present, argon arc manual welding is typically used for shell-and-tube thin tubesheet deep hole welding structure, but due to shell-and-tube thin tubesheet
The welding attainability of deep hole welding structure is poor, and manual operations is extremely inconvenient, and weldquality is influenceed by welder's level, and then makes
Obtain welding quality cannot be guaranteed, therefore how to obtain high-quality tube head weld seam and dashed forward as the key in process gas boiler manfacturing
Breakpoint.
The content of the invention
There is above-mentioned technical problem for prior art, the utility model provides a kind of embedded for shell-and-tube thin tubesheet
The automatic welding pipette tips of Deep Hole Welding, the automatic welding pipette tips can not only conveniently realize the weldering of shell-and-tube thin tubesheet deep hole welding structure
Connect, and energy real-time tracking checks welding effect in welding process, it is ensured that welding quality.
To achieve the above object, the utility model provides following technical scheme：
There is provided a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet, its be used for deep hole welding tube sheet and
The junction of heat exchanger tube, the automatic welding pipette tips include importing lumen, insulation lumen and nozzle assembly, the one of the insulation lumen
End and the end of the importing lumen are affixed, are connected with copper seat in the cavity of the other end of the insulation lumen, copper seat and
The nozzle assembly is affixed, and the nozzle assembly includes tungsten electrode, it is characterised in that：The point of the tungsten electrode includes the first rounding
Angle and the second rounding being connected with first rounding, the angle of second rounding are more than first rounding
Angle, in addition to adjust the arc voltage tracker of the tungsten electrode position for detecting the change of arc voltage during welding in real time.
Wherein, the angle of first rounding is 5~15 degree, and the angle of second rounding is 45~60 degree.
Wherein, in addition to for conveying the argon gas protection pipe of argon gas, the output end insertion of the argon gas protection pipe is described absolutely
In edge lumen and copper seat connection.
Wherein, in addition in the insertion insulation lumen water cooling being connected with copper seat circulates copper pipe.
Wherein, the nozzle assembly also includes porcelain mouth, air sifter and sandwich, and the air sifter is threadedly coupled with the copper, institute
State porcelain mouth to be threadedly coupled with the air sifter, described sandwich between the air sifter and copper seat, the tungsten electrode is fixed on institute
State sandwich and extend out to outside the porcelain mouth.
Wherein, in addition to be fixed on it is described insulation lumen outside lead mouth fixed seat, the mouth fixed seat of leading is fixed with welding wire
Mouth is led, the welding wire, which leads to wear in mouth, has penetrated welding wire, welding wire leads the point that mouth reaches the tungsten electrode through the welding wire.
Wherein, in addition in the insertion insulation lumen electrode wires being connected with copper seat.
Wherein, the insulation lumen is connected with the introduction chamber pipe screw thread.
Wherein, the insulation lumen is made up of bakelite, and the importing lumen is made up of stainless steel.
The beneficial effects of the utility model：
Automatic welding pipette tips of the present utility model, its structure includes importing lumen, insulation lumen and nozzle assembly, and insulate lumen
One end with import lumen it is solid end it is affixed, the length of arc welding gun head is so lengthened by importing lumen, consequently facilitating realize
Copper seat, copper seat, nozzle assembly affixed with nozzle assembly are connected with the deep hole welding of tube sheet, the cavity of the other end for the lumen that insulate
Including tungsten electrode, the point of tungsten electrode includes the first rounding and the second rounding, and the angle of the second rounding is more than the first rounding
The angle at angle, double roundings at tungsten electrode tip can concentrate electric arc, be conducive to the quick junction by tube sheet and heat exchanger tube to penetrate,
But due to the thinner thickness of tube sheet, it is easy to burn-through phenomenon occur, automatic welding pipette tips of the present utility model also include arc voltage and tracked
Device, the change of arc voltage when arc voltage tracker can detect welding in real time, and then adjust the position of tungsten electrode so that welding as early as possible
In the case of thoroughly, burn-through is effectively prevented.
Brief description of the drawings
Fig. 1 shows for a kind of structure of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet of the present utility model
It is intended to.
Fig. 2 is the sophisticated structural representation of tungsten electrode of the present utility model.
Reference in Fig. 1 and Fig. 2：
1- imports lumen；
2- insulation lumens；
3- electrode wires；
4- argon gas protection pipes；
5- water coolings circulate copper pipe；
6- copper seat；
7- is sandwich；
8- porcelain mouths；
9- air sifters；
10- tungsten electrodes, the roundings of 100- first, the roundings of 101- second；
11- welding wires；
12- welding wires lead mouth；
13- leads mouth fixed seat；
14- arc voltage trackers.
Embodiment
The utility model is described in detail below in conjunction with specific embodiment and accompanying drawing.
A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet of the present embodiment, automatic welding pipette tips master
To be used for deep hole welding, as shown in figure 1, automatic welding pipette tips include importing lumen 1, insulation lumen 2 and nozzle assembly, import lumen
1 is made up of stainless steel material, and insulation lumen 2 is made up of bakelite, the end spiral shell of the left end and importing lumen 1 of the lumen 2 that insulate
Line is connected, and so lengthens the length of arc welding gun head by importing lumen 1, consequently facilitating the aerial of insertion tube sheet realizes Deep Hole Welding
Connect.
As depicted in figs. 1 and 2, copper seat 6 is connected with the cavity of the right-hand member of insulation lumen 2, copper seat 6 is consolidated with nozzle assembly
Connect, nozzle assembly includes tungsten electrode 10, the point of tungsten electrode 10 includes the first rounding 100 and is connected with the first rounding 100
Second rounding 101, the angle of the second rounding 101 is more than the angle of the first rounding 100, specifically, the first rounding 100
Angle be 5~15 degree, the angle of the second rounding 101 is 45~60 degree, it is preferred that the angle of the first rounding 100 is 10
Degree, the angle of the second rounding 101 is 45 degree, and double roundings at the tip of tungsten electrode 10 can concentrate electric arc, and being conducive to quickly will pipe
The junction through welding of plate and heat exchanger tube, improves welding efficiency.
As shown in figure 1, automatic welding pipette tips also include arc voltage tracker 14, when arc voltage tracker 14 can detect welding in real time
The change of arc voltage, and then the position of tungsten electrode 10 is adjusted, the horizontal level and height and position of tungsten electrode 10 and weld seam are for example adjusted, is made
Obtain in the case where penetrating as early as possible, effectively prevent the junction of burn-through tube sheet and heat exchanger tube, protected while welding efficiency is improved
Demonstrate,prove welding quality.In addition, the tip of tungsten electrode 10 of arc voltage tracker 14 and double roundings coordinates, advantageously welding is improved in realization
Ensure the purpose of welding quality while efficiency.
As shown in figure 1, automatic welding pipette tips also include argon gas protection pipe 4, water cooling circulation copper pipe 5 and electrode wires 3, argon gas is protected
Pillar 4, water cooling circulation copper pipe 5 and electrode wires 3 inserts to be connected in insulation lumen 2 with copper 6, argon gas protection pipe 4 for
Argon gas is conveyed around weld seam, to protect the welding quality of weld seam, water cooling circulation copper pipe 5 is what flexible was adjusted, can be had
The temperature of arc welding gun head during effect reduction welding, butt welding pipette tips are protected, and ensure the continuity of welding.
As shown in figure 1, nozzle assembly also includes porcelain mouth 8, air sifter 9 and sandwich 7, air sifter 9 is threadedly coupled with copper seat 6, porcelain mouth 8
It is threadedly coupled with air sifter 9, sandwich 7 are located between air sifter 9 and copper seat 6, and tungsten electrode 10 is fixed on sandwich 7 and extend out to outside porcelain mouth 8.Gas
Sieve 9, which is threadably secured, to be connected on copper seat 6, can prevent debris from entering welding region, porcelain mouth 8, which is connected through a screw thread, to be fixed on
On air sifter 9 so that the argon gas that argon gas protection pipe 4 is conveyed enters porcelain mouth 8 through air sifter 9, porcelain mouth 8 provides argon gas to welded seam area and protected
Shield.
As shown in figure 1, automatic welding pipette tips, which also include being fixed on outside insulation lumen 2, leads mouth fixed seat 13, mouth fixed seat is led
13, which are fixed with welding wire, leads mouth 12, and welding wire, which leads to wear in mouth 12, has penetrated welding wire 11, and welding wire 11 leads the point that mouth 12 reaches tungsten electrode 10 through welding wire
End, it is flexible adjustable to lead mouth 12 due to welding wire, so that welding wire 11 can be adjusted to most appropriate position and tungsten electrode 10
Welded together, and then ensure that the quality of welding.
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality
With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general
Lead to it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this
The spirit and scope of utility model technical scheme.
Claims (9)
1. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet, it is used for deep hole welding tube sheet and heat exchanger tube
Junction, the automatic welding pipette tips include importing lumen, insulation lumen and nozzle assembly, one end of the insulation lumen and institute
The end for stating importing lumen is affixed, and copper seat, the copper seat and the spray are connected with the cavity of the other end of the insulation lumen
Nozzle assembly is affixed, and the nozzle assembly includes tungsten electrode, it is characterised in that：The point of the tungsten electrode include the first rounding and with
Second rounding of the first rounding connection, the angle of second rounding is more than the angle of first rounding,
The automatic welding pipette tips also include the arc voltage that the tungsten electrode position is adjusted for the change of arc voltage when detection is welded in real time
Tracker.
2. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：The angle of first rounding is 5~15 degree, and the angle of second rounding is 45~60 degree.
3. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：Also include in the argon gas protection pipe for being used to convey argon gas, the output end insertion insulation lumen of the argon gas protection pipe simultaneously
The copper seat connection.
4. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：The water cooling for also including being connected with copper seat in the insertion insulation lumen circulates copper pipe.
5. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：The nozzle assembly also includes porcelain mouth, air sifter and sandwich, and the air sifter is threadedly coupled with the copper, the porcelain mouth and institute
Air sifter threaded connection is stated, described sandwich between the air sifter and copper seat, the tungsten electrode is fixed on described sandwich and stretched
Go out to outside the porcelain mouth.
6. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：Also include being fixed on outside the insulation lumen and lead mouth fixed seat, it is described lead mouth fixed seat and be fixed with welding wire lead mouth, the weldering
Silk, which leads to wear in mouth, has penetrated welding wire, and welding wire leads the point that mouth reaches the tungsten electrode through the welding wire.
7. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：Also include inserting the electrode wires being connected with copper seat in the insulation lumen.
8. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：The insulation lumen is connected with the introduction chamber pipe screw thread.
9. a kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet according to claim 1, its feature
It is：The insulation lumen is made up of bakelite, and the importing lumen is made up of stainless steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338730 | 2016-12-08 | ||
| CN2016213387303 | 2016-12-08 |
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| CN206536113U true CN206536113U (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720028950.4U Active CN206536113U (en) | 2016-12-08 | 2017-01-11 | A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735785A (en) * | 2016-12-08 | 2017-05-31 | 茂名重力石化装备股份公司 | A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet |
| CN108637415A (en) * | 2018-05-15 | 2018-10-12 | 豪利机械(苏州)有限公司 | A kind of inner walls of deep holes build-up welding apparatus |
-
2017
- 2017-01-11 CN CN201720028950.4U patent/CN206536113U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735785A (en) * | 2016-12-08 | 2017-05-31 | 茂名重力石化装备股份公司 | A kind of automatic welding pipette tips for the embedded Deep Hole Welding of shell-and-tube thin tubesheet |
| CN108637415A (en) * | 2018-05-15 | 2018-10-12 | 豪利机械(苏州)有限公司 | A kind of inner walls of deep holes build-up welding apparatus |
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