CN102019492A - Demagnetizing and deflective blow preventing device of pipeline welding line - Google Patents
Demagnetizing and deflective blow preventing device of pipeline welding line Download PDFInfo
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- CN102019492A CN102019492A CN2010105489035A CN201010548903A CN102019492A CN 102019492 A CN102019492 A CN 102019492A CN 2010105489035 A CN2010105489035 A CN 2010105489035A CN 201010548903 A CN201010548903 A CN 201010548903A CN 102019492 A CN102019492 A CN 102019492A
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Abstract
The invention discloses a demagnetizing and deflective blow preventing device of a pipeline welding line. The device comprises a first carbon steel shielding plate and a second carbon steel shielding plate, wherein the first carbon steel shielding plate and the second carbon steel shielding plate are both semi-arc plates; the first carbon steel shielding plate is provided with a first welding port, and the second carbon steel shielding plate is provided with a second welding port; and the first carbon steel shielding plate and the second carbon steel shielding plate are connected through a shielding plate connecting device. The device has a shielding effect on a magnetic field around a pipeline welding joint to prevent deflective blow of welding arc under the influence of the magnetic field, thereby reducing the construction difficulty while pipeline welding and guaranteeing the welding quality.
Description
Technical field
The present invention relates to a kind of welding equipment, the blow device is prevented in specifically a kind of pipe welding seam demagnetization.
Background technology
At present at construction or maintenance scene when carrying out the pipeline welding operation because mouth of pipe welding arc is subjected to the interference of surrounding magnetic field, electric arc can not guarantee with axis at equidirectional, and be biased to a side, the arc blow phenomenon that causes is called the arc blow of electric arc.Main cause is because the magnetic field superposition that the remanent magnetism that exists and electric arc cause in the pipeline, has changed the uniformity of electric arc surrounding magnetic field, and the lateral deviation of electric arc a little less than magnetic field moved, and influences normal welding procedure production.Arc blow can cause welding arc Dutch roll instability, causes appearance of weld bad.Make the droplet transfer irregular, can't carry out the transition to the groove root and form the molten bath, cause defectives such as incomplete root penetration, incomplete fusion, undercut easily; during argon arc welding; can also slacken the protective atmosphere around the electric arc, make in the molten bath pernicious gases such as entrained air, cause pore and slag inclusion.Arc blow weight person makes the electric arc difficulty of igniting, and destroys arc burning stability, even causes arc extinction, and molten drop or slag spill from welding pool, can't weld.
Summary of the invention
The purpose of this invention is to provide the anti-blow device of a kind of pipe welding seam demagnetization, it can play shielding action in line up weld magnetic field on every side, prevent that welding arc from blow occurring under the influence in magnetic field, the difficulty of construction when having reduced pipeline welding has been guaranteed welding quality.
The present invention for achieving the above object, be achieved through the following technical solutions: comprise the first carbon steel barricade and the second carbon steel barricade, the first carbon steel barricade and the second carbon steel barricade all are semicircular arc plates, offer first soldering opening on the first carbon steel barricade, offer second soldering opening on the second carbon steel barricade, the first carbon steel barricade and the second carbon steel barricade interconnect by the barricade jockey.Described barricade jockey has first wing plate, second wing plate, the 3rd wing plate and the 4th wing plate, first wing plate is connected with the two ends up and down of the first carbon steel barricade respectively with second wing plate, the 3rd wing plate is connected with the two ends up and down of the second carbon steel barricade respectively with the 4th wing plate, connects by bolt between first wing plate and the 3rd wing plate, second wing plate and the 4th wing plate.Described barricade jockey has first wing plate, second wing plate, the 3rd wing plate and the 4th wing plate, first support of two semicircular arcs is set between first wing plate and second wing plate, respectively offer first gathering sill of a semicircular arc on the arc-plane of two first support inboards, one first projection respectively is installed in first gathering sill, two first projections are connected with the left and right sides of the first carbon steel barricade respectively, second support of two semicircular arcs is set between the 3rd wing plate and the 4th wing plate, respectively offer second gathering sill of a semicircular arc on the arc-plane of two second support inboards, one second projection respectively is installed in second gathering sill, and two second projections are connected with the left and right sides of the second carbon steel radome respectively.The thickness H2 of the thickness H1 of the described first carbon steel barricade and the second carbon steel barricade is 3 millimeters.
The invention has the advantages that: can play shielding action in line up weld magnetic field on every side, prevent that welding arc from blow occurring under the influence in magnetic field, the difficulty of construction when reducing pipeline welding is guaranteed welding quality, pipeline bonding strength height, good, with low cost etc. to the shield effectiveness in magnetic field.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1; Fig. 3 is the structural representation of another embodiment of the present invention; Fig. 4 is the B-B sectional structure schematic diagram of Fig. 3; Fig. 5 is the C-C sectional structure schematic diagram of Fig. 3.
The specific embodiment
The anti-blow device of pipe welding seam demagnetization of the present invention comprises the first carbon steel barricade 1 and the second carbon steel barricade 2, the first carbon steel barricade 1 and the second carbon steel barricade 2 all are semicircular arc plates, offer first soldering opening 7 on the first carbon steel barricade 1, offering second soldering opening, 8, the first carbon steel barricades 1 and the second carbon steel barricade 2 on the second carbon steel barricade 2 interconnects by the barricade jockey.The first carbon steel barricade 1 and the second carbon steel barricade 2 butt joint mutually form the ring shielding cover, during welding, radome is placed the seam crossing of two pipelines 9, by the shielding action of carbon steel sheet itself to magnetic field, play the effect that prevents the welding arc blow, difficulty of construction when reducing pipeline welding is guaranteed welding quality.In addition, can also play fixation to pipelines on two sides 9 after the first carbon steel barricade 1 and the second carbon steel barricade 2 fasten mutually, occur becoming flexible when preventing 9 butt joints of two pipelines, influence welding effect.During welding, the seam of two pipelines 9 is welded at first soldering opening 7 and second soldering opening, 8 places.
Barricade jockey of the present invention can adopt multiple structure to realize, wherein preferred construction is as follows: described barricade jockey has first wing plate 3, second wing plate 4, the 3rd wing plate 5 and the 4th wing plate 6, first wing plate 3 is connected with the two ends up and down of the first carbon steel barricade 1 respectively with second wing plate 4, the 3rd wing plate 5 is connected with the two ends up and down of the second carbon steel barricade 2 respectively with the 4th wing plate 6, connects by bolt between first wing plate 3 and the 3rd wing plate 5, second wing plate 4 and the 4th wing plate 6.Advantage with low cost, that bonding strength is high, shield effectiveness is good that this structure has.
Barricade jockey of the present invention can also adopt other structure, for example: described barricade jockey has first wing plate 3, second wing plate 4, the 3rd wing plate 5 and the 4th wing plate 6, first support 10 of two semicircular arcs is set between first wing plate 3 and second wing plate 4, respectively offer first gathering sill 11 of a semicircular arc on the arc-plane of two first support 10 inboards, one first projection 12 respectively is installed in first gathering sill 11, two first projections 12 are connected with the left and right sides of the first carbon steel barricade 1 respectively, second support 13 of two semicircular arcs is set between the 3rd wing plate 5 and the 4th wing plate 6, respectively offer second gathering sill 14 of a semicircular arc on the arc-plane of two second support 13 inboards, 15, two second projections 15 of one second projection respectively are installed in second gathering sill 14 to be connected with the left and right sides of the second carbon steel radome 2 respectively.The radome that this structure can make the first carbon steel barricade 1 and the second carbon steel barricade 2 constitute rotates along gathering sill, being convenient to butt welded seam welds everywhere, can fix pipelines on two sides 9 after first support 10 and second support 13 fasten mutually, prevent that pipeline 9 from shaking.But this structure manufacturing cost is higher, and aspect bonding strength and shield effectiveness with preferred version gap to some extent.
When the thickness H2 of the thickness H1 of the first carbon steel barricade 1 of the present invention and the second carbon steel barricade 2 can use according to reality in the thickness of the mouth of pipe and the working environment power in magnetic field determine, usually the thickness H1 of the first carbon steel barricade 1 and the thickness H2 of the second carbon steel barricade 2 can be decided to be the 2.5-3.5 millimeter, wherein preferred scheme is: the thickness H2 of the thickness H1 of the first carbon steel barricade 1 of the present invention and the second carbon steel barricade 2 is 3 millimeters.This scheme has bonding strength height, advantage that shield effectiveness is good, and cost of manufacture is cheap relatively.
Claims (4)
1. the blow device is prevented in the pipe welding seam demagnetization, it is characterized in that: comprise the first carbon steel barricade (1) and the second carbon steel barricade (2), the first carbon steel barricade (1) and the second carbon steel barricade (2) all are semicircular arc plates, offer first soldering opening (7) on the first carbon steel barricade (1), offer second soldering opening (8) on the second carbon steel barricade (2), the first carbon steel barricade (1) and the second carbon steel barricade (2) interconnect by the barricade jockey.
2. the blow device is prevented in pipe welding seam demagnetization according to claim 1, it is characterized in that: described barricade jockey has first wing plate (3), second wing plate (4), the 3rd wing plate (5) and the 4th wing plate (6), first wing plate (3) is connected with the two ends up and down of the first carbon steel barricade (1) respectively with second wing plate (4), the 3rd wing plate (5) is connected with the two ends up and down of the second carbon steel barricade (2) respectively with the 4th wing plate (6), connects by bolt between first wing plate (3) and the 3rd wing plate (5), second wing plate (4) and the 4th wing plate (6).
3. the blow device is prevented in pipe welding seam demagnetization according to claim 1, it is characterized in that: described barricade jockey has first wing plate (3), second wing plate (4), the 3rd wing plate (5) and the 4th wing plate (6), first support (10) of two semicircular arcs is set between first wing plate (3) and second wing plate (4), respectively offer first gathering sill (11) of a semicircular arc on the arc-plane of two first supports (10) inboard, one first projection (12) respectively is installed in first gathering sill (11), two first projections (12) are connected with the left and right sides of the first carbon steel barricade (1) respectively, second support (13) of two semicircular arcs is set between the 3rd wing plate (5) and the 4th wing plate (6), respectively offer second gathering sill (14) of a semicircular arc on the arc-plane of two second supports (13) inboard, one second projection (15) respectively is installed in second gathering sill (14), and two second projections (15) are connected with the left and right sides of the second carbon steel barricade (2) respectively.
4. according to claim 1, the anti-blow device of 2 or 3 each described pipe welding seam demagnetizations, it is characterized in that: the thickness H2 of the thickness H1 of the described first carbon steel barricade (1) and the second carbon steel barricade (2) is 3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105489035A CN102019492B (en) | 2010-11-18 | 2010-11-18 | Demagnetizing and deflective blow preventing device of pipeline welding line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105489035A CN102019492B (en) | 2010-11-18 | 2010-11-18 | Demagnetizing and deflective blow preventing device of pipeline welding line |
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| CN102019492A true CN102019492A (en) | 2011-04-20 |
| CN102019492B CN102019492B (en) | 2012-11-21 |
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| CN2010105489035A Active CN102019492B (en) | 2010-11-18 | 2010-11-18 | Demagnetizing and deflective blow preventing device of pipeline welding line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386547A (en) * | 2013-07-18 | 2013-11-13 | 首都航天机械公司 | Magnetic field shielding method for hydraulic body part long-focusing welding |
| CN103506744A (en) * | 2012-06-21 | 2014-01-15 | 贵阳铝镁设计研究院有限公司 | Magnetic shielding method for electric arc welding in high-intensity magnetic field of aluminum reduction cell |
| CN105228433A (en) * | 2014-07-02 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of method for vacuum electron beam welder magnetic field shielding |
| CN105957689A (en) * | 2016-06-02 | 2016-09-21 | 西北工业大学 | Pre-weld demagnetization method for narrow gap pulse fusion welding of petroleum drill collar |
| CN108406046A (en) * | 2018-05-04 | 2018-08-17 | 山东国舜建设集团有限公司 | A kind of auxiliary welding equipment and welding method for high-intensity magnetic field |
| CN108994427A (en) * | 2018-09-11 | 2018-12-14 | 江苏海事职业技术学院 | A kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument |
| CN109633492A (en) * | 2018-12-14 | 2019-04-16 | 江阴兴澄特种钢铁有限公司 | A method of examine steel plate to weld arc blow sensitivity magnetic induction |
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| SU1320049A1 (en) * | 1986-02-18 | 1987-06-30 | Институт Электросварки Им.Е.О.Патона | Arrangement for preventing magnetic blow-out in magnetic welding |
| CN2806026Y (en) * | 2005-04-14 | 2006-08-16 | 渤海船舶重工有限责任公司 | Electromagnet for removing electric arc magnetic blow of austenitic electrode |
| CN2812319Y (en) * | 2005-07-29 | 2006-08-30 | 上海汽轮机有限公司 | DC submerged arc welding magnetic blow resistant device |
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| CN201862906U (en) * | 2010-11-18 | 2011-06-15 | 中国石化集团第十建设公司 | Demagnetizing and blow preventing device used in pipeline welding |
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2010
- 2010-11-18 CN CN2010105489035A patent/CN102019492B/en active Active
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| SU1320049A1 (en) * | 1986-02-18 | 1987-06-30 | Институт Электросварки Им.Е.О.Патона | Arrangement for preventing magnetic blow-out in magnetic welding |
| CN2806026Y (en) * | 2005-04-14 | 2006-08-16 | 渤海船舶重工有限责任公司 | Electromagnet for removing electric arc magnetic blow of austenitic electrode |
| CN2812319Y (en) * | 2005-07-29 | 2006-08-30 | 上海汽轮机有限公司 | DC submerged arc welding magnetic blow resistant device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506744A (en) * | 2012-06-21 | 2014-01-15 | 贵阳铝镁设计研究院有限公司 | Magnetic shielding method for electric arc welding in high-intensity magnetic field of aluminum reduction cell |
| CN103386547A (en) * | 2013-07-18 | 2013-11-13 | 首都航天机械公司 | Magnetic field shielding method for hydraulic body part long-focusing welding |
| CN105228433A (en) * | 2014-07-02 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of method for vacuum electron beam welder magnetic field shielding |
| CN105957689A (en) * | 2016-06-02 | 2016-09-21 | 西北工业大学 | Pre-weld demagnetization method for narrow gap pulse fusion welding of petroleum drill collar |
| CN108406046A (en) * | 2018-05-04 | 2018-08-17 | 山东国舜建设集团有限公司 | A kind of auxiliary welding equipment and welding method for high-intensity magnetic field |
| CN108994427A (en) * | 2018-09-11 | 2018-12-14 | 江苏海事职业技术学院 | A kind of direct current weldering arc magnetic blow control method using externally-applied magnetic field expansion instrument |
| CN109633492A (en) * | 2018-12-14 | 2019-04-16 | 江阴兴澄特种钢铁有限公司 | A method of examine steel plate to weld arc blow sensitivity magnetic induction |
| CN109633492B (en) * | 2018-12-14 | 2020-09-25 | 江阴兴澄特种钢铁有限公司 | Method for detecting welding magnetic blow sensitive magnetic induction strength of steel plate |
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| CN102019492B (en) | 2012-11-21 |
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Address after: 255438 No. 29, Linzi, Zibo District, Shandong, Jianshe Road Applicant after: SINOPEC Tenth Construction Company Address before: 255438 No. 29, Linzi, Zibo District, Shandong, Jianshe Road Applicant before: No.10 Construction Corp., SINOPEC |
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