CN104368921B - In-pipe welding seam gas protection device used for stainless steel pipe machine - Google Patents
In-pipe welding seam gas protection device used for stainless steel pipe machine Download PDFInfo
- Publication number
- CN104368921B CN104368921B CN201410660684.8A CN201410660684A CN104368921B CN 104368921 B CN104368921 B CN 104368921B CN 201410660684 A CN201410660684 A CN 201410660684A CN 104368921 B CN104368921 B CN 104368921B
- Authority
- CN
- China
- Prior art keywords
- closure film
- appendix
- gas
- hard tube
- pipe inside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 22
- 239000010935 stainless steel Substances 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 title abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 8
- 238000010943 off-gassing Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract 6
- 239000007789 gas Substances 0.000 description 51
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 18
- 229910052786 argon Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 206010023126 Jaundice Diseases 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses an in-pipe welding seam gas protection device used for a stainless steel pipe machine. The in-pipe welding seam gas protection device comprises a gas delivery pipe and a mounting bracket connected with the gas delivery pipe, and the gas delivery pipe can be inserted into a stainless steel pipe; one end of the gas delivery pipe is connected with a connector used for being connected with a gas source, and the other end of the gas delivery pipe is closed and is connected with a gas output assembly used for leading out protection gas; the gas output assembly comprises a first blocking soft piece and a second blocking soft piece, wherein the first blocking soft piece and the second blocking soft piece are arranged on the gas delivery pipe in a spaced mode in the axial direction of the gas delivery pipe and can cooperate with the inner wall of the stainless steel pipe to form a closed space; the gas output assembly further comprises a gas outlet hole which allows a cavity of the gas delivery pipe to be communicated with the closed space, and the gas outlet hole is formed between the first blocking soft piece and the second blocking soft piece. The in-pipe welding seam gas protection device has the advantages of being simple in structure, easy to manufacture, capable of avoiding loss and waste of the protection gas, reducing the production cost and improving welding quality and the attractiveness of finished products after welding and the like.
Description
Technical field
The present invention relates to pipe manufacturing machine technical field, be specifically related to a kind of pipe inside weld gas shield device for rustless steel tuber.
Background technology
Rustless steel tuber is mainly used in making decoration and industrial stainless steel tube, its basic functional principle be by mould, rustless steel strip is rolled into tubulose after, then be welded into pipe by welder.When welding; if there being the existence of oxygen; can produce Oxidation causes weldquality to reduce; and then affect weld strength; simultaneous oxidation effect also can cause weld seam blackout, jaundice; affect the aesthetic property of finished product, therefore, be required in the pipe that weld is corresponding and outside pipe use noble gas (such as argon) to protect.
Existing rustless steel tuber is to be installed in by welder in the weldering case of a band inner chamber; it is passed through argon in the lumen; stainless steel tube after roll-forming through be drawn across this inner chamber and in the lumen complete welding, the argon in inner chamber formed stainless steel tube pipe outside gas shield.And the gas shield in pipe is usually and directly uses a common trachea to insert in stainless steel tube; gas shield is carried out in argon being passed through stainless steel tube pipe by trachea; owing to the two ends of stainless steel tube all communicate with external environment condition; substantial amounts of argon can run off from the two ends of stainless steel tube; the waste and the production cost that cause argon improve; what is more important; the loss of argon also can reduce the argon concentration at stainless steel tube pipe inside weld; the content causing oxygen is the highest, the aesthetic property of finished product after directly influencing welding quality and welding.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming prior art to exist, it is provided that a kind of simple in construction, is prone to make, can avoid the waste of running off of protective gas, reduces production cost, improve the pipe inside weld gas shield device for rustless steel tuber of finished product aesthetic property after welding quality and welding.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of pipe inside weld gas shield device for rustless steel tuber, including the appendix that can be inserted in stainless steel tube and the mounting bracket being connected with appendix, one end of described appendix connects the joint for being connected with source of the gas, the other end of described appendix is closed and connects the gas output precision having for being derived by protective gas, described gas output precision includes the first closure film and the second closure film, described first closure film and second closure film along appendix axially spaced-apart arrange be installed on appendix and can with the inwall of stainless steel tube cooperatively form closing space, described gas output precision also includes tube chamber and the venthole in described closing space connecting appendix, described venthole is located between the first closure film and the second closure film.
As a further improvement on the present invention:
Described venthole has multiple, and multiple ventholes are arranged along the axis direction uniform intervals of appendix, and the outgassing direction of all ventholes is consistent.
The outgassing direction of described venthole is towards the position of pipe inside weld.
Described gas output precision also includes sleeve, described sleeve is sheathed on the outside of appendix, on described appendix, the one end in sleeve is connected with limiting plate, it is equiped with baffle plate in the other end of sleeve is dismountable on described appendix, described first closure film compresses and is installed between sleeve and limiting plate, and described second closure film compresses and is installed between sleeve and baffle plate；Described venthole is located on sleeve, and described appendix is communicated with the tube chamber of appendix and the otch of venthole.
One end that described appendix is relative with joint is closed by sealing block, and described sealing block connects has screw rod, described baffle-plate-sleeve are located on screw rod and are pressed abd fixed on the end of appendix by the clamp nut coordinated with screw rod.
Also it is equiped with for the 3rd closure film with the rustless steel strip close contacting fit in winding process on described appendix, described 3rd closure film is between gas output precision and joint, and the radial dimension of the 3rd closure film is more than the first closure film and the radial dimension of the second closure film.
Described appendix includes the first hard tube and the second hard tube, described first hard tube and the second hard tube are docked by adpting flange and securing member, described joint is connected to the end of the first hard tube, described gas output precision is located on the second hard tube, and described 3rd closure film is pressed abd fixed between the adpting flange of the first hard tube and the second hard tube.
Described first closure film, the second closure film and the 3rd closure film are silica gel piece.
Described first closure film, the second closure film and the 3rd closure film are all in circular ring type.
The outer wall of described first hard tube is provided with one section of screw thread and cooperation is equiped with two binding nuts, and described mounting bracket is sheathed on the first hard tube and is fixedly clamped by two binding nuts.
nullCompared with prior art，It is an advantage of the current invention that: the present invention is used for the pipe inside weld gas shield device of rustless steel tuber in use，Appendix is inserted in stainless steel tube，The first closure film and the second closure film is made to cooperatively form a closing space with the inwall of appendix，Venthole is located between the first closure film and the second closure film simultaneously，Protective gas is exported this closing space by venthole，It is full of protective gas in making confined space，And then district to be welded to pipe inside weld formation gas shield，Confined space owing to being formed is prevented from the loss of protective gas，The protective gas concentration at pipe inside weld zone position to be welded is made to be improved，And then the aesthetic property of finished product after welding quality can being improved and welding，And，Owing to protective gas will not run off waste，Greatly reduce the consumption of protective gas，Reduce production cost，In addition，The simple in construction of this gas shield device、It is prone to make.
Accompanying drawing explanation
Fig. 1 is the present invention main TV structure schematic diagram for the pipe inside weld gas shield device of rustless steel tuber.
Fig. 2 is the present invention local main sectional structure schematic diagram for the pipe inside weld gas shield device of rustless steel tuber.
Fig. 3 is structure for amplifying schematic diagram at A in Fig. 2.
Fig. 4 is structure for amplifying schematic diagram at B in Fig. 2.
Marginal data:
1, appendix；11, otch；12, the first hard tube；121, screw thread；122, binding nut；13, the second hard tube；14, adpting flange；15, securing member；2, mounting bracket；3, joint；4, gas output precision；41, the first closure film；42, the second closure film；43, venthole；44, sleeve；45, limiting plate；46, baffle plate；47, sealing block；48, screw rod；49, clamp nut；5, the 3rd closure film.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
nullAs shown in Figures 1 to 4，The present invention is for the pipe inside weld gas shield device of rustless steel tuber，Including the appendix 1 that can be inserted in stainless steel tube and the mounting bracket 2 being connected with appendix 1，Can be fixed in the frame of rustless steel tuber by mounting bracket 2，One end of appendix 1 connects the joint 3 for being connected with source of the gas，The other end of appendix 1 is closed and connects the gas output precision 4 having for being derived by protective gas (argon)，Appendix 1 specifically includes the first hard tube 12 and the second hard tube 13，First hard tube 12 and the second hard tube 13 can use steel pipe，First hard tube 12 and the second hard tube 13 are docked by adpting flange 14 and securing member 15，Wherein，Second hard tube 13 is closed away from one end of the first hard tube 12，Joint 3 is connected to the end of the first hard tube 12，Gas output precision 4 is located on the second hard tube 13.Gas output precision 4 includes the first closure film 41 and the second closure film 42, first closure film 41 and the second closure film 42 arrange along the axially spaced-apart of appendix 1 and are installed on the second hard tube 13, after appendix 1 inserts in stainless steel tube, first closure film 41 and the second closure film 42 lay respectively at the both sides in pipe inside weld district to be welded, and cooperatively form closing space with the inwall of the second hard tube 13, gas output precision 4 also includes the tube chamber connecting the second hard tube 13 and the venthole 43 closing space, venthole 43 is located between the first closure film 41 and the second closure film 42.
nullThe present invention is used for the pipe inside weld gas shield device of rustless steel tuber in use，Appendix 1 is inserted in stainless steel tube，The first closure film 41 and the second closure film 42 is made to cooperatively form a closing space with the inwall of appendix 1，Venthole 43 is located between the first closure film 41 and the second closure film 42 simultaneously，Protective gas is exported this closing space by venthole 43，It is full of protective gas in making confined space，And then district to be welded to pipe inside weld formation gas shield，Confined space owing to being formed is prevented from the loss of protective gas，The protective gas concentration at pipe inside weld zone position to be welded is made to be improved，And then the aesthetic property of finished product after welding quality can being improved and welding，And，Owing to protective gas will not run off waste，Greatly reduce the consumption of protective gas，Reduce production cost，In addition，The simple in construction of this gas shield device、It is prone to make.Through actually used statistics, after using this gas shield device, often the air consumption of a piece stainless steel tube of welding is reduced to 0.16 ~ 0.18 yuan by original 0.27 yuan, the face of weld non-oxidizing bright of stainless steel tube after welding.
In the present embodiment, gas output precision 4 also includes sleeve 44, sleeve 44 is sheathed on the outside of the second hard tube 13, it is welded with limiting plate 45 in one end of sleeve 44 on second hard tube 13, it is equiped with baffle plate 46 in the other end of sleeve 44 is dismountable on second hard tube 13, first closure film 41 compresses and is installed between sleeve 44 and limiting plate 45, and the second closure film 42 compresses and is installed between sleeve 44 and baffle plate 46；Above-mentioned venthole 43 is located on sleeve 44, and the second hard tube 13 is communicated with the tube chamber of the second hard tube 13 and the otch 11 of venthole 43, and the intraluminal protective gas of the second hard tube 13 can be passed through to venthole 43 from otch 11.
The detachable of above-mentioned baffle plate 46 is installed specifically, one end that second hard tube 13 is relative with joint 3 is closed by sealing block 47, connect on sealing block 47 and have screw rod 48, baffle plate 46 is sheathed on screw rod 48 and is pressed abd fixed on the end of the second hard tube 13 by the clamp nut 49 coordinated with screw rod 48, unclamp clamp nut 49 and make it exit from screw rod 48, baffle plate 46, second can be blocked film 42, sleeve 44 and the first closure film 41 and disassemble.
The gas output precision 4 of this kind of structure can not only ensure the steadiness after the first closure film 41 and the second closure film 42 installation, also the first closure film 41 and the second closure film 42 can be replaced, when changing, only need to unclamp clamp nut 49 to be pulled down by baffle plate 46, again the second closure film 42, sleeve 44 and the first closure film 41 are taken off one by one from appendix 1, its replacing fast and easy, easily operated.
In the present embodiment; nine ventholes 43 it are provided with altogether on sleeve 44; nine ventholes 43 are arranged along the axis direction uniform intervals of appendix 1; and the outgassing direction of all ventholes 43 is consistent; the outgassing direction of all ventholes 43 is all towards the position of pipe inside weld; so make the position spraying to pipe inside weld of protective gas Direct Uniform, improve the effect of protection.In other embodiments, the quantity of venthole 43 can also be multiple beyond nine.
In the present embodiment, the 3rd closure film 5 also it is equiped with on first hard tube 12, 3rd closure film 5 is between gas output precision 4 and joint 3, and the 3rd the radial dimension of closure film 5 more than the first closure film 41 and the radial dimension of the second closure film 42, 3rd closure film 5 can be with the rustless steel strip close contacting fit in winding process, it can be by the protective gas closure of first closure film 41 one end leakage space between the first closure film 41 and the 3rd closure film 5, avoid again space outerpace to enter this space simultaneously, form duplicate protection, further increase the effect of protection.It is that the 3rd closure film 5 is pressed abd fixed between the first hard tube 12 and the adpting flange 14 of the second hard tube 13 in the present embodiment, so easily and fast the 3rd closure film 5 can be dismounted and changes, and the 3rd closure film 5 also acts as the first hard tube 12 and sealing function of the second hard tube 13 junction.
In the present embodiment, the first closure film 41, second blocks film 42 and the 3rd closure film 5 is silica gel piece, and the first closure film 41, second blocks film 42 and the 3rd closure film 5 all in circular ring type.
In the present embodiment, the outer wall of the first hard tube 12 is provided with one section of screw thread 121 and cooperation is equiped with two binding nuts 122, mounting bracket 2 is sheathed on the first hard tube 12 and is fixedly clamped by two binding nuts 122, the binding nut 122 that will be close to joint 3 side unclamps and exits the first hard tube 12, can mounting bracket 2 be disassembled from the first hard tube 12, its handling are very convenient.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment.To those of ordinary skill in the art, the modifications and variations obtained by under without departing from the technology of the present invention concept thereof also should be regarded as protection scope of the present invention.
Claims (9)
- null1. the pipe inside weld gas shield device for rustless steel tuber，It is characterized in that: include the appendix (1) that can be inserted in stainless steel tube and the mounting bracket (2) being connected with appendix (1)，One end of described appendix (1) connects the joint (3) for being connected with source of the gas，The other end of described appendix (1) is closed and connects the gas output precision (4) having for being derived by protective gas，Described gas output precision (4) includes the first closure film (41) and the second closure film (42)，Described first closure film (41) and the second closure film (42) arrange along the axially spaced-apart of appendix (1) that to be installed in appendix (1) upper and can cooperatively form with the inwall of stainless steel tube and close space，Described gas output precision (4) also includes tube chamber and the venthole (43) in described closing space connecting appendix (1)，Described venthole (43) is located between the first closure film (41) and the second closure film (42)；Also it is equiped with for the 3rd closure film (5) with the rustless steel strip close contacting fit in winding process on described appendix (1), described 3rd closure film (5) is positioned between gas output precision (4) and joint (3), and the radial dimension of the 3rd closure film (5) is more than the first closure film (41) and the radial dimension of the second closure film (42).
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 1; it is characterized in that: described venthole (43) has multiple; multiple ventholes (43) are arranged along the axis direction uniform intervals of appendix (1), and the outgassing direction of all ventholes (43) is consistent.
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 2, it is characterised in that: the outgassing direction of described venthole (43) is towards the position of pipe inside weld.
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 1, it is characterized in that: described gas output precision (4) also includes sleeve (44), described sleeve (44) is sheathed on the outside of appendix (1), on described appendix (1), the one end in sleeve (44) is connected with limiting plate (45), it is equiped with baffle plate (46) in the other end of sleeve (44) is dismountable on described appendix (1), described first closure film (41) compresses and is installed between sleeve (44) and limiting plate (45), described second closure film (42) compresses and is installed between sleeve (44) and baffle plate (46)；Described venthole (43) is located on sleeve (44), and described appendix (1) is communicated with the tube chamber of appendix (1) and the otch (11) of venthole (43).
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 4; it is characterized in that: one end that described appendix (1) is relative with joint (3) is closed by sealing block (47); on described sealing block (47), connection is had screw rod (48), described baffle plate (46) to be sheathed on screw rod (48) and is pressed abd fixed on the end of appendix (1) by the clamp nut (49) coordinated with screw rod (48).
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 1, it is characterized in that: described appendix (1) includes the first hard tube (12) and the second hard tube (13), described first hard tube (12) and the second hard tube (13) are docked by adpting flange (14) and securing member (15), described joint (3) is connected to the end of the first hard tube (12), described gas output precision (4) is located on the second hard tube (13), described 3rd closure film (5) is pressed abd fixed between the adpting flange (14) of the first hard tube (12) and the second hard tube (13).
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 1, it is characterised in that: described first closure film (41), the second closure film (42) and the 3rd closure film (5) they are silica gel piece.
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 7, it is characterised in that: described first closure film (41), the second closure film (42) and the 3rd closure film (5) are all in circular ring type.
- Pipe inside weld gas shield device for rustless steel tuber the most according to claim 6; it is characterized in that: the outer wall of described first hard tube (12) is provided with one section of screw thread (121) and cooperation is equiped with two binding nuts (122), described mounting bracket (2) is sheathed on the first hard tube (12) and above and is fixedly clamped by two binding nuts (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660684.8A CN104368921B (en) | 2014-11-19 | 2014-11-19 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660684.8A CN104368921B (en) | 2014-11-19 | 2014-11-19 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104368921A CN104368921A (en) | 2015-02-25 |
| CN104368921B true CN104368921B (en) | 2017-01-11 |
Family
ID=52548252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410660684.8A Expired - Fee Related CN104368921B (en) | 2014-11-19 | 2014-11-19 | In-pipe welding seam gas protection device used for stainless steel pipe machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104368921B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900025B (en) * | 2019-10-30 | 2021-04-23 | 中国化学工程第六建设有限公司 | Welding process of hydrogen sulfide resistant pipeline |
| CN111872519B (en) * | 2020-08-27 | 2024-05-14 | 湖南湘投金天新材料有限公司 | Control device and method for weld seam surplus height in straight welded pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796928Y (en) * | 2005-06-27 | 2006-07-19 | 四川石油管理局 | Argon gas filling protection device for biphase stainless steel pipe line welding |
| DE202005021175U1 (en) * | 2005-07-14 | 2007-04-12 | Jankus Werner | Gas flooding device used in the production of high quality welding joints between pipes and/or containers comprises spaced sealing elements each having an inner annular metallic core and an outer disk body made from an elastomeric material |
| CN201151030Y (en) * | 2008-01-30 | 2008-11-19 | 四川石油天然气建设工程有限责任公司 | Inner protection device for pipeline welding |
| KR20090066759A (en) * | 2007-12-20 | 2009-06-24 | 삼성중공업 주식회사 | Purging apparatus for pipe welding |
| CN201702526U (en) * | 2010-05-24 | 2011-01-12 | 中国石油天然气股份有限公司 | Special welding protective cover for stainless steel and heat-resistant steel pipe elbow |
| CN202062174U (en) * | 2011-05-12 | 2011-12-07 | 陕西建工集团设备安装工程有限公司 | Internal gas protecting device for pipeline welding |
| CN204262609U (en) * | 2014-11-19 | 2015-04-15 | 长沙成进汽车配件有限公司 | For the pipe inside weld gas shield device of stainless steel tuber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201214170Y (en) * | 2008-07-02 | 2009-04-01 | 太原市阳光园不锈钢制品有限公司 | Back face protection device for welding stainless steel tube longitudinal seam |
-
2014
- 2014-11-19 CN CN201410660684.8A patent/CN104368921B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796928Y (en) * | 2005-06-27 | 2006-07-19 | 四川石油管理局 | Argon gas filling protection device for biphase stainless steel pipe line welding |
| DE202005021175U1 (en) * | 2005-07-14 | 2007-04-12 | Jankus Werner | Gas flooding device used in the production of high quality welding joints between pipes and/or containers comprises spaced sealing elements each having an inner annular metallic core and an outer disk body made from an elastomeric material |
| KR20090066759A (en) * | 2007-12-20 | 2009-06-24 | 삼성중공업 주식회사 | Purging apparatus for pipe welding |
| CN201151030Y (en) * | 2008-01-30 | 2008-11-19 | 四川石油天然气建设工程有限责任公司 | Inner protection device for pipeline welding |
| CN201702526U (en) * | 2010-05-24 | 2011-01-12 | 中国石油天然气股份有限公司 | Special welding protective cover for stainless steel and heat-resistant steel pipe elbow |
| CN202062174U (en) * | 2011-05-12 | 2011-12-07 | 陕西建工集团设备安装工程有限公司 | Internal gas protecting device for pipeline welding |
| CN204262609U (en) * | 2014-11-19 | 2015-04-15 | 长沙成进汽车配件有限公司 | For the pipe inside weld gas shield device of stainless steel tuber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104368921A (en) | 2015-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE602006003529D1 (en) | Sealing element with leakage indication of the unpressed pipe connection and pipe connection with such a sealing element | |
| CN104368921B (en) | In-pipe welding seam gas protection device used for stainless steel pipe machine | |
| CN204262609U (en) | For the pipe inside weld gas shield device of stainless steel tuber | |
| CN204687312U (en) | Pipe extruder head unit | |
| CN202813927U (en) | Air condition compressor liquid storage device | |
| CN207394181U (en) | It is a kind of can be with the band liner pipe connector of adjustment length | |
| CN207840375U (en) | Pipe fitting welding carries on the back protective device | |
| CN204987413U (en) | Welding formula air conditioner muffler | |
| CN103481514B (en) | A kind of plastics pipe interface technique | |
| CN209398978U (en) | A kind of easy-to-mount pipe fitting | |
| CN2916309Y (en) | Stainless steel pipe joint | |
| CN204460868U (en) | A kind of filter | |
| CN209540260U (en) | A kind of fast acting flange for low pressure pipeline | |
| CN203979679U (en) | A kind of one plastic steel pipe assembly | |
| CN201799763U (en) | Split type stainless steel pipeline welding back filled argon protection device | |
| CN203171121U (en) | Welding gas protecting cover | |
| CN202402683U (en) | Conical rapid-installation valve | |
| CN208703573U (en) | Gas filter filtration core fixes device | |
| CN202402854U (en) | Flexible pipe connector | |
| CN203099021U (en) | Quick-connecting type full-plastic bend sluice valve | |
| CN207349529U (en) | A kind of double-strand central heating valve | |
| CN208209452U (en) | A kind of cable tail pipe | |
| CN205298880U (en) | Weld formula pipeline coupling mechanism outward | |
| CN203579045U (en) | Welding device | |
| CN205817048U (en) | Adapter and flange group welding backside gas protecting tool set-up |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20170111 |