CN202861606U - Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding - Google Patents
Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding Download PDFInfo
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- CN202861606U CN202861606U CN 201220532264 CN201220532264U CN202861606U CN 202861606 U CN202861606 U CN 202861606U CN 201220532264 CN201220532264 CN 201220532264 CN 201220532264 U CN201220532264 U CN 201220532264U CN 202861606 U CN202861606 U CN 202861606U
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- air bag
- plugging device
- pipe
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Abstract
The utility model discloses an inflatable plugging device in a pipe used for stainless steel pipeline argon arc welding. The inflatable plugging device in the pipe used for the stainless steel pipeline argon arc welding comprises two plugging pieces, and is characterized in that the plugging pieces are two air bags (1), wherein one air bag (1) is provided with a gas filled tube (3) and a flexible connecting tube (2) which is communicated with the other air bag (1), the two air bags (1) are aerated or deflated through the gas filled tube (3) and the flexible connecting tube (2), the air bags (1) are similar to circular discs after being aerated, and the circular discs are provided with ring belt shape periphery faces adaptive with the inner wall of a pipeline to be welded. The inflatable plugging device in the pipe used for the stainless steel pipeline argon arc welding is good in plugging effect, small in occupying space, and convenient to install and dismantle, can improve a protective effect with argon in the pipe greatly, avoids surface oxidation of metal on the inner side of a welding line during the welding process, and enables welding quality to be stable.
Description
Technical field
The utility model relates to a kind of pipeline argon arc welding auxiliary welding utensil, and is specifically a kind of for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding.
Background technology
The argon arc welding technology is on the principle basis of common electrical arc-welding; utilize argon gas to the protection of metal wlding; make wlding be melted into the liquid bath that forms at welded base material by high electric current; make welded metal and wlding reach a kind of solder technology of metallurgical binding; because when welding; constantly serve argon gas when weld metal melting or high temperature; wlding can not be contacted with airborne oxygen; thereby prevented the oxidation of weld seam; therefore argon arc welding almost can be welded all metals; particularly some active metals, noble metal are such as magnesium, titanium, molybdenum, zirconium, aluminium etc. and alloy thereof.
When adopting argon arc welding to carry out the pipe welding port welding, need simultaneously argon gas on the inside and outside welding zone of pipeline is logical, air insulated is snapped outside the district.In the prior art, for welding zone in pipeline keeps argon gas, one of method that adopts at present is that two pipeline external port of needs welding are carried out shutoff, and is very uneconomical although the easily operation of this argon gas hold mode can expend a lot of argon gas.Two of method is to carry out shutoff at the position subsides water soluble paper near two pipeline welding zones, with the argon filling spatial constraints near weld seam, to avoid argon gas in pipeline, to be full of, cause waste, this method also is mainly used in the fixedly welding of weld bond, its weak point is, surpass 1 meter because duct length is most, the operation of shutoff needs to carry out before two pipelines merge welding, otherwise will be difficult to operation, if the situation of water soluble paper breakage or local shedding occurs after therefore causing merging, all will be difficult to mend envelope; Moreover the water soluble paper will be stayed in the pipe, and the water-soluble solution that allows pressure testing use washes away, but can all not rinse well, and a part can be stayed in the pipeline, affect the operation of pipeline and the purity of production medium etc.
The utility model content
The purpose of this utility model provides a kind of for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, and its plugging effect is good, little, convenient mounting or dismounting take up room.
The purpose of this utility model is achieved through the following technical measures:
A kind of for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, comprise two closeouts, it is characterized in that described closeouts is two air bags, one of them air bag has gas tube and is communicated with the flexible steel in flat section tubing of another air bag, described two air bags are by gas tube and flexible steel in flat section tubing inflation or venting, be similar to discoidly behind the described airbag aeration, this disk has the ring-band shape side face suitable with inner-walls of duct to be welded, so that the air bag after the inflation is fitted tight with inner-walls of duct.
For realizing that as a kind of improvement of the present utility model, described plugging device can also be set up one or more air bag again, and is communicated with successively by flexible steel in flat section tubing with welding when a plurality of weld seam in three or more the pipelines.
As a kind of improvement of the present utility model, described plugging device also comprises the breather pipe for delivery of argon gas; Described breather pipe penetrates and passes from its inner side end from the outside end face of one of them air bag, in order to argon gas is introduced in the pipeline between two air bags.
As preferred embodiment of the present utility model, described gas tube and breather pipe are installed on the outside end face of same air bag.
Welding when realizing in the same pipeline a plurality of weld seam, as a kind of improvement to the utility model preferred embodiment, described plugging device can also be set up one or more air bag again, and is communicated with successively by flexible steel in flat section tubing; Described breather pipe runs through described air bag, and the pipeline section between two adjacent air bags has blow vent.
As a kind of embodiment of the present utility model, the external diameter behind the described airbag aeration overflow is slightly larger than the internal diameter of pipeline to be welded, treats the plugging strength of welded pipe line to guarantee air bag.
As a kind of improved procedure of the present utility model, the side face width of described air bag increases with the increase of internal diameter of the pipeline to be welded, further strengthens the plugging effect that air bag is treated welded pipe line by the mode of augmented airbag and tube contacts face to be welded.
As a kind of embodiment of the present utility model, described two air bags behind the inflation overflow and the center distance of pipe welding seam to be welded all between 150 ~ 200mm, make balloon rupture with the high temperature of avoiding producing in the welding process.
Compared with prior art, the utlity model has following beneficial effect:
The first, all in the form of annular discs and have a ring-band shape side face suitable with inner-walls of duct to be welded behind the airbag aeration overflow of the present utility model, to install and remove very easily in the situation, air bag can also fit tightly the shutoff that realizes it with inner-walls of duct to be welded; Each point pressure of the contact-making surface of air bag side face and inner-walls of duct to be welded is even, argon gas is not easy to leak, and has strengthened the plugging effect that air bag is treated welded pipe line;
Second, owing to become disc behind the airbag aeration, its inside and outside end face is only slightly heaved because of inflation, air bag occupied axial space in pipeline to be welded is little, make between the pipeline axial length of air bag shutoff and two air bags to flexibly connect length of tube basically identical, so that seal cavity dimensionally stable, small volume between two air bags, saved to greatest extent the consumption of argon gas.
The 3rd, breather pipe of the present utility model can be when carrying out weld job, and seal cavity is carried argon gas in the pipeline between two air bags, and it runs through the air bag setting and does not affect air bag to the plugging effect of pipeline, has strengthened the convenience of weld job.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation that the utility model is used for the interior inflatable plugging device of pipe of stainless steel pipes argon arc welding welding.
The specific embodiment
As shown in Figure 1, the utility model is used for the interior inflatable plugging device of pipe of stainless steel pipes argon arc welding welding, formed by two air bags 1, flexible steel in flat section tubing 2, gas tube 3 and breather pipe 4, wherein, described gas tube 3 and breather pipe 4 all are arranged on the same air bag, the outside end face of this air bag connects gas tube 3, is used for Compressed Gas is filled with air bag; 4 outside end faces from this air bag 1 of breather pipe penetrate and pass from its inner side end, namely have the mouth of pipe of breather pipe at the inner side end of this air bag, are used for to the pipeline space applying argon gas between two air bags.
For making air bag can adapt to the high-temperature condition of welding zone, the material selection of air bag 1 is dense, airtight, refractory temperature is not less than 500 ℃ fire-resistance cloth, and 2 of flexible steel in flat section tubing are selected resistant to elevated temperatures metal hose.Two air bags 1 are by gas tube 3 and flexible steel in flat section tubing 2 inflations or venting, and all in the form of annular discs behind two air bags, 1 inflation overflow, this disk has the ring-band shape side face suitable with inner-walls of duct to be welded, and flexible steel in flat section tubing 2 is installed on the inner side end of disk.
When using plugging device of the present utility model to carry out the pipeline welding operation, at first, for different pipelines to be welded, the corresponding suitable with it air bag 1 of selecting, after being air bag 1 inflation overflow, its external diameter should be suitable with the internal diameter of pipeline to be welded, usually choose the external diameter air bag more bigger than internal diameter of the pipeline, as select than the air bag about the large 5mm of internal diameter of the pipeline, pipeline to be welded such as φ 168 * 5mm, internal diameter of the pipeline is φ 158mm, and then should choose external diameter is the air bag 1 of φ 163mm, and to select external diameter be that the metal hose of φ 10mm is as flexible steel in flat section tubing 2; In addition, also can arrange the side face width W of air bag 1 wider for the larger pipeline to be welded of caliber, treat the plugging effect of welded pipe line with further reinforcement air bag.Secondly, the air bag 1 of two unaerateds is placed respectively the pipeline of welding pipe welding seam both sides, and flexible steel in flat section tubing 2, gas tube 3 and breather pipe 4 in the attaching, gas tube 3 and breather pipe 4 pass the rear gas cylinder that connects respectively from the non-weld port of pipeline to be welded, its Center Vent tube 4 passes into argon gas, gas tube 3 can pass into argon gas or nitrogen, two air bags 1 behind the inflation overflow and the center distance of weld seam between 150 ~ 200mm, with the high temperature of avoiding producing in the welding process air bag 1 is broken.Again, to after good, open gas cylinder in the weld bond group of weld seam both sides pipeline, two air bags 1 are by gas tube 3 inflation overflows, and the side face of air bag 1 and inner-walls of duct fully fit tightly, with in the pipeline of weld seam both sides by two air bag 1 shutoff formation confined spaces.At last, open the argon gas gas cylinder, the confined space between two air bags 1 passes into argon gas by breather pipe 4, realizes the argon shield of pipeline inside weld and begins to carry out argon arc welding.After welding finishes, to close gas cylinder 1 venting of two air bags is shunk, traction gas tube 3 and breather pipe 4 are extracted plugging device of the present utility model out by pipeline.
The utility model does not limit to and the above-mentioned specific embodiment, according to foregoing, ordinary skill knowledge and customary means according to this area, do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite, the utility model can also be made the equivalent modifications of other various ways, replace or change, such as plugging device plural air bag is set, each air bag is communicated with successively by flexible steel in flat section tubing, and breather pipe runs through each air bag, breather pipe pipeline section between two adjacent air bags is offered the gas outlet for logical argon gas, welding when realizing in many pipelines a plurality of weld seam; As long as will be arranged to have discoid with the suitable ring-band shape side face of inner-walls of duct to be welded for the air bag of blocking pipe, all drop among the protection domain of the present utility model.
Claims (8)
1. one kind is used for the interior inflatable plugging device of pipe that the stainless steel pipes argon arc welding is welded, comprise two closeouts, it is characterized in that: described closeouts is two air bags (1), one of them air bag (1) has gas tube (3) and is communicated with the flexible steel in flat section tubing (2) of another air bag (1), described two air bags (1) are by gas tube (3) and flexible steel in flat section tubing (2) inflation or venting, be similar to discoidly after described air bag (1) inflation, this disk has the ring-band shape side face suitable with inner-walls of duct to be welded.
2. according to claim 1 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: described plugging device also is provided with one or more air bag (1), and air bag (1) is communicated with successively by flexible steel in flat section tubing (2).
3. according to claim 1 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: described plugging device also comprises the breather pipe (4) for delivery of argon gas; Described breather pipe (4) penetrates and passes from its inner side end from the outside end face of one of them air bag (1).
4. according to claim 3 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: described gas tube (3) and breather pipe (4) are installed on the outside end face of same air bag (1).
5. according to claim 3 or 4 described for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: described plugging device also is provided with one or more air bag (1), and air bag (1) is communicated with successively by flexible steel in flat section tubing (2); Described breather pipe (4) runs through air bag (1) and the pipeline section between adjacent two air bags (1) has blow vent.
6. according to claim 5 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: the external diameter behind described air bag (1) the inflation overflow is slightly larger than the internal diameter of pipeline to be welded.
7. according to claim 6 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: the side face width (W) of described air bag (1) increases with the increase of internal diameter of the pipeline to be welded.
8. according to claim 7 for inflatable plugging device in the pipe of stainless steel pipes argon arc welding welding, it is characterized in that: described two air bags (1) behind the inflation overflow and the center distance of pipe welding seam to be welded all between 150 ~ 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532264 CN202861606U (en) | 2012-10-17 | 2012-10-17 | Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532264 CN202861606U (en) | 2012-10-17 | 2012-10-17 | Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding |
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| CN202861606U true CN202861606U (en) | 2013-04-10 |
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| CN 201220532264 Expired - Lifetime CN202861606U (en) | 2012-10-17 | 2012-10-17 | Inflatable plugging device in pipe used for stainless steel pipeline argon arc welding |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384735A (en) * | 2014-08-25 | 2015-03-04 | 陕西延长石油（集团）有限责任公司管道运输公司 | Method for fireproof isolation welding in oil and gas pipeline hot work |
| CN106944776A (en) * | 2017-05-12 | 2017-07-14 | 烟台杰瑞石油装备技术有限公司 | A kind of plugging device for welded pipe line internal protection gas |
| CN108500425A (en) * | 2018-05-28 | 2018-09-07 | 中国水利水电第十四工程局有限公司 | A kind of airbag apparatus of gas-filled protective weldering |
| CN109175813A (en) * | 2018-10-30 | 2019-01-11 | 江苏卫蓝医疗科技有限公司 | It is a kind of for medical gas pipeline welding pipe in plugging device |
| CN109848530A (en) * | 2019-03-12 | 2019-06-07 | 中核工程咨询有限公司 | A kind of water soluble paper substitution tooling and its application method |
| CN110587081A (en) * | 2019-09-02 | 2019-12-20 | 新兴铸管股份有限公司 | Steel pipe continuous argon arc welding weld back protection device |
| CN110695496A (en) * | 2019-10-18 | 2020-01-17 | 中国电建集团山东电力建设第一工程有限公司 | Argon filling method for high alloy steel header pipe seat weld crater and welding method |
| CN111299767A (en) * | 2020-03-17 | 2020-06-19 | 中船澄西扬州船舶有限公司 | Internal filling type argon filling welding device and welding method for butt welding of pipelines |
| CN112496602A (en) * | 2020-11-12 | 2021-03-16 | 福建福清核电有限公司 | Air bag type welding argon filling protection method for nuclear power plant |
-
2012
- 2012-10-17 CN CN 201220532264 patent/CN202861606U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384735A (en) * | 2014-08-25 | 2015-03-04 | 陕西延长石油（集团）有限责任公司管道运输公司 | Method for fireproof isolation welding in oil and gas pipeline hot work |
| CN106944776A (en) * | 2017-05-12 | 2017-07-14 | 烟台杰瑞石油装备技术有限公司 | A kind of plugging device for welded pipe line internal protection gas |
| CN108500425A (en) * | 2018-05-28 | 2018-09-07 | 中国水利水电第十四工程局有限公司 | A kind of airbag apparatus of gas-filled protective weldering |
| CN109175813A (en) * | 2018-10-30 | 2019-01-11 | 江苏卫蓝医疗科技有限公司 | It is a kind of for medical gas pipeline welding pipe in plugging device |
| CN109848530A (en) * | 2019-03-12 | 2019-06-07 | 中核工程咨询有限公司 | A kind of water soluble paper substitution tooling and its application method |
| CN110587081A (en) * | 2019-09-02 | 2019-12-20 | 新兴铸管股份有限公司 | Steel pipe continuous argon arc welding weld back protection device |
| CN110695496A (en) * | 2019-10-18 | 2020-01-17 | 中国电建集团山东电力建设第一工程有限公司 | Argon filling method for high alloy steel header pipe seat weld crater and welding method |
| CN111299767A (en) * | 2020-03-17 | 2020-06-19 | 中船澄西扬州船舶有限公司 | Internal filling type argon filling welding device and welding method for butt welding of pipelines |
| CN112496602A (en) * | 2020-11-12 | 2021-03-16 | 福建福清核电有限公司 | Air bag type welding argon filling protection method for nuclear power plant |
| CN112496602B (en) * | 2020-11-12 | 2022-09-16 | 福建福清核电有限公司 | Air bag type welding argon filling protection method for nuclear power plant |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
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| CX01 | Expiry of patent term |