CN202639662U - Gas-protecting device for welding - Google Patents
Gas-protecting device for welding Download PDFInfo
- Publication number
- CN202639662U CN202639662U CN 201220175308 CN201220175308U CN202639662U CN 202639662 U CN202639662 U CN 202639662U CN 201220175308 CN201220175308 CN 201220175308 CN 201220175308 U CN201220175308 U CN 201220175308U CN 202639662 U CN202639662 U CN 202639662U
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- gas
- welding
- caisson
- welded
- shield device
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- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The utility model provides a gas-protecting device for welding. The device comprises a sealing object and a gas storing device, wherein the sealing object is used for carrying out gap-leaving type sealing of outer sides of abutting seams of two steel tubes to be welded, protective gas used for welding is stored in the gas storing device, and a gas outlet portion of the gas storing device is in ring shape and is communicated with the abutting seams of the two steel tubes to be welded. A heat-resisting elastic gasket is arranged on the gas outlet portion and used for sealing inner sides of the abutting seams of the two steel tubes to be welded. The gas-protecting device for the welding can ensure that air of a welding point can be thoroughly removed during welding process of the steel tubes so that welding quality can be ensured and technical requirements of welding personnel are not high.
Description
Technical field
The utility model relates to welding field, specifically, relates to a kind of gas shield device that welds usefulness.
Background technology
When steel plate or the butt welding of steel pipe bevel, for preventing welding deformation or root being burnt when preventing automatic welding, carry out the welding of backing run at the joint bevel root first.
In welding process in the past, solder technology or argon arc welding bottoming through commonly using single face welding and double face shaping guarantee welding quality.Fig. 1 is the generalized section of butt welding of steel tube of the prior art, as shown in Figure 1, at first, dock after the docking mouth of pipe of two steel pipes to be welded (the first steel pipe 7 and the second steel pipe 8) beaten groove, then a hand-held welding gun 12, a hand-held argon gas tracheae 1 carry out backing welding at the groove place of docking steel pipe.This welding method is had relatively high expectations to welder's technical operation standard, and because still there is air in the welding position, root is easy to exist oxidative phenomena.If misoperation then can weld defect occur and need to reprocess, thereby cause the waste of manpower and materials, also affect the duration.For the welding process that some welding qualities are had relatively high expectations, such as the welding of power boiler tubes, just there is very large deficiency in said method.Therefore, need a kind ofly can to guarantee welding quality and to the less demanding welding method of the technical operation standard of welding personnel and device.
The utility model content
The purpose of this utility model is; a kind of gas shield device that welds usefulness is provided; this device can guarantee to get rid of fully in the steel-pipe welding process air at pad place, thereby guarantees welding quality, and is also not high to the requirement of the technical operation standard of welding personnel simultaneously.
For achieving the above object, the utility model provides a kind of gas shield device that welds usefulness, and it comprises: sealer, sealing thing are used for the gap type sealing is stayed in the outside of the butt seam of two steel pipes to be welded; And caisson; storage protection gas for welding in this caisson; the gas vent section of this caisson is communicated with ringwise and with the butt seam of described two steel pipes to be welded; this gas vent section also is provided with heat-resisting elastic washer, and this heat-resisting elastic washer is used for the inboard of the butt seam of described two steel pipes to be welded is sealed.
Preferably, described protective gas is that density is greater than the inert protective gas of atmospheric density.Further preferably, described inert protective gas is argon gas.
In addition, preferably, described caisson can also comprise: gas bomb is used for storing described protective gas; Appendix, an end of this appendix is connected with described gas bomb, and the other end of this appendix is connected with the gas vent section of described caisson, is used for the protective gas that described gas bomb is stored is transported to the gas vent section of described caisson.
Preferably, described sealer can be made by brown paper or insulation sliver, and its edge has viscosity.
Preferably, described heat-resisting elastic washer can be made by the heat-resistant adhesive skin.
When stating in the use device two steel pipes being carried out butt welding, with described sealer the gap type sealing is stayed in the outside of the butt seam of two steel pipes to be welded first, then the annular gas export department of described caisson is extend into the joint of two steel pipes from the free mouth of pipe of steel pipe, its butt seam with two steel pipes is communicated with, simultaneously by the inner seal of the heat-resisting elastic washer in the described gas vent section with described butt seam.Then logical protective gas makes protective gas be full of the butt seam of described two steel pipes.Because the density of described protective gas is greater than the density of air, therefore, protective gas can be the air exhausting in the described butt seam except clean.When the protective gas that spills when the breach from described sealer is enough to make little fire to extinguish, just can weld.When welding, slowly tear sealer, and meanwhile weld, until welding is finished.Therefore, welding described in the utility model can guarantee to get rid of fully in the steel-pipe welding process air at pad place with gas shield device, thereby guarantees welding quality, and is also not high to the requirement of the technical operation standard of welding personnel simultaneously.
Description of drawings
By below in conjunction with accompanying drawing embodiment being described, above-mentioned feature of the present utility model and technological merit will become apparent and understand easily.
Fig. 1 is the generalized section of butt welding of steel tube of the prior art;
Fig. 2 is the generalized section that the gas shield device of the described welding usefulness of use the first embodiment of the present utility model carries out butt welding of steel tube; And
Fig. 3 is the generalized section that the gas shield device of the described welding usefulness of use the second embodiment of the present utility model carries out butt welding of steel tube;
Reference numeral:
1, argon bottle gas outlet; 2, elongated steel pipe;
3, elongated perforating steel pipe; 4, annular gas export department;
5, heat-resistant adhesive leather hose; 6, bolt;
7, the first steel pipe; 8, the second steel pipe
9, insulation sliver; 10, slit groove
11, butt seam; 12, welding gun
13, brown paper.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
In this manual, identical Reference numeral indicates identical part.
Fig. 2 is the generalized section that the gas shield device of the described welding usefulness of use the first embodiment of the present utility model carries out butt welding of steel tube; as shown in Figure 2; the first steel pipe 7 and the second steel pipe 8 are two steel pipes, and are equipped with slit groove 10 at butt seam 11 places of these two steel pipes.The sticking rope form insulation of edge tool sliver 9 is looped around the outside of butt seam 11; the gap type sealing is stayed in the outside of the butt seam of two steel pipes to be welded; namely in the head and the tail joint leaving certain gaps uncovered by the economic plan of insulation sliver 9, this breach is used for checking whether protection gas for welding (being argon gas in the present embodiment) is full of described butt seam 11.The annular gas export department 4 of caisson reaches the joint of two steel pipes from the free mouth of pipe of steel pipe, and be communicated with the butt seam 11 of two steel pipes, simultaneously by heat-resisting elastic washer (being the heat-resistant adhesive leather hose in the present embodiment) 5 inner seals with described butt seam in the described gas vent section 4.Wherein, heat-resistant adhesive leather hose 5 is combined closely by self elasticity and gas vent section 4.For in conjunction with firmly, also can use bolt 6 that heat-resistant adhesive leather hose 5 is fixed with gas vent section 4.Annular gas export department 4 is welded on the elongated steel pipe 2, and is communicated with appendix (being elongated steel pipe 2) by corresponding elongated perforating steel pipe 3.Argon bottle gas outlet 1 is communicated with elongated steel pipe 2.
Described caisson can also comprise: the gas bomb (not shown) is used for storing described protective gas (being in the present embodiment argon gas).Wherein, an end of elongated steel pipe 2 is connected with described gas bomb, and its other end is connected with the gas vent section 4 of described caisson, is used for the protective gas that described gas bomb is stored is transported to the gas vent section 4 of described caisson.
Wherein, argon gas passes in the elongated steel pipe 2 by argon bottle gas outlet 1, then by elongated perforating steel pipe 3 inflow gas export departments 4 and enter in the butt seam 11 of two steel pipes.Because the butt seam 11 of 9 pairs of two steel pipes to be welded of insulation sliver has sealing function, and argon gas density ratio air is large, therefore, argon gas discharges the air in the butt seam 11 from the breach on the insulation sliver 9.Described indentation, there at the insulation sliver checks that by little fire (for example fire of lighter or match) if little fire extinguishes, then argon filling is complete in the butt seam 11, can weld.When welding, on one side can open insulation sliver 9, Yi Bian weld, so just guaranteed well the air-free state of weld, thereby improved well welding quality.
Fig. 3 is the generalized section that the gas shield device of the described welding usefulness of use the second embodiment of the present utility model welds.From shown in Figure 2 different be that in the present embodiment, described sealer makes to replace being incubated sliver 9 by brown paper 13.Because the edge of described brown paper has viscosity, therefore also can seal slit 11 well.Specifically, with the brown paper sealer gap type sealing is stayed in the outside of the butt seam 11 of the first steel pipe 7 and the second steel pipe 8.If the bore of described steel pipe is larger, then in the outer felt of butt seam 11 around multiwall kraft, and then form breach at this brown paper.
In the above embodiments, described protection gas for welding can density greater than the inert protective gas of atmospheric density, such as inert gas, nitrogen etc., preferably, described protection gas for welding adopts argon gas.
As mentioned above, when stating in the use device two steel pipes being carried out butt welding, with described sealer the gap type sealing is stayed in the outside of the butt seam of two steel pipes to be welded first, then the annular gas export department of described caisson is extend into the joint of two steel pipes from the free mouth of pipe of steel pipe, its butt seam with two steel pipes is communicated with, simultaneously by the inner seal of the heat-resisting elastic washer in the described gas vent section with described butt seam.Then logical protective gas makes protective gas be full of the butt seam of described two steel pipes.Because the density of described protective gas is greater than the density of air, therefore, protective gas can be the air exhausting in the described butt seam except clean.When the protective gas that spills when the breach from described sealer is enough to make little fire to extinguish, just can weld.When welding, slowly tear sealer, and meanwhile weld, until welding is finished.Therefore, welding described in the utility model can guarantee to get rid of fully in the steel-pipe welding process air at pad place with gas shield device, thereby guarantees welding quality, and is also not high to the requirement of the technical operation standard of welding personnel simultaneously.
Under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment; and these improvement and distortion; all drop in the protection domain of the present utility model; those skilled in the art should be understood that; above-mentioned specific descriptions are just explained the purpose of this utility model better, and protection domain of the present utility model is limited by claim and equivalent thereof.
Claims (6)
1. a gas shield device that welds usefulness is characterized in that, comprising:
Sealer, sealing thing are used for the gap type sealing is stayed in the outside of the butt seam of two steel pipes to be welded; And
Caisson; storage protection gas for welding in this caisson; the gas vent section of this caisson is communicated with ringwise and with the butt seam of described two steel pipes to be welded; this gas vent section also is provided with heat-resisting elastic washer, and this heat-resisting elastic washer is used for the inboard of the butt seam of described two steel pipes to be welded is sealed.
2. the gas shield device of welding usefulness according to claim 1 is characterized in that, described protective gas is that density is greater than the inert protective gas of atmospheric density.
3. the gas shield device of welding usefulness according to claim 2 is characterized in that, described inert protective gas is argon gas.
4. the gas shield device of welding usefulness according to claim 1 is characterized in that, described caisson further comprises:
Gas bomb is used for storing described protective gas;
Appendix, an end of this appendix is connected with described gas bomb, and the other end of this appendix is connected with the gas vent section of described caisson, is used for the protective gas that described gas bomb is stored is transported to the gas vent section of described caisson.
5. gas shield device according to claim 1 is characterized in that, described sealer is made by brown paper or insulation sliver, and the edge of sealing thing has viscosity.
6. gas shield device according to claim 1 is characterized in that, described heat-resisting elastic washer is made by the heat-resistant adhesive skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175308 CN202639662U (en) | 2012-04-23 | 2012-04-23 | Gas-protecting device for welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220175308 CN202639662U (en) | 2012-04-23 | 2012-04-23 | Gas-protecting device for welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202639662U true CN202639662U (en) | 2013-01-02 |
Family
ID=47408835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220175308 Expired - Lifetime CN202639662U (en) | 2012-04-23 | 2012-04-23 | Gas-protecting device for welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202639662U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222581A (en) * | 2020-10-10 | 2021-01-15 | 东方电气(广州)重型机器有限公司 | Gas protection device |
| CN117506256A (en) * | 2023-12-22 | 2024-02-06 | 山东恒辉节能技术集团有限公司 | welding device |
-
2012
- 2012-04-23 CN CN 201220175308 patent/CN202639662U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222581A (en) * | 2020-10-10 | 2021-01-15 | 东方电气(广州)重型机器有限公司 | Gas protection device |
| CN117506256A (en) * | 2023-12-22 | 2024-02-06 | 山东恒辉节能技术集团有限公司 | welding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |