CN102248314A - Longitudinal-weld-joint welding process for tank bodies of oil tanks - Google Patents
Longitudinal-weld-joint welding process for tank bodies of oil tanks Download PDFInfo
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- CN102248314A CN102248314A CN2011101674741A CN201110167474A CN102248314A CN 102248314 A CN102248314 A CN 102248314A CN 2011101674741 A CN2011101674741 A CN 2011101674741A CN 201110167474 A CN201110167474 A CN 201110167474A CN 102248314 A CN102248314 A CN 102248314A
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Abstract
The invention discloses a longitudinal-weld-joint welding process for the tank bodies of oil tanks, which an improved on an oil tank manufacturing process. The cross sections of the tank bodies of the oil tanks are in a square oval shape formed by straight lines and transitional arcs. The manufacturing process comprises three steps, namely a plate prefabrication step, an early welding step and a final welding step, and is characterized in that: the plates formed by the plate fabrication step are strips with the same length as the tank bodies; and the weld join formed by the early welding and the weld joint formed by the final welding are vertical straight weld joints. The longitudinal-weld-joint welding process for the tank bodies of the oil tanks has the advantages of: firstly, due to the high-quality automatic welding, the airtightness of the weld joints is improved, the strength of the longitudinal weld joint is high enough, and the rate of first acceptance check in oil tank airtightness test is improved; some strip plates do not need forming, the forming manufacturing workload is small, and the manufacturing difficulty is small; and finally, during longitudinal-weld-joint welding, the tank bodies of the inner and outer tanks can be combined easily, and the two semi-outer tank components formed by longitudinal-weld-joint welding can be fastened easily. The process is suitable to be widely used for manufacturing tank bodies.
Description
Technical field
The present invention relates to the improvement of oil tank manufacture craft, is a kind of oil tank body longitudinal joint butt welding process specifically.
Background technology
The oval oil tank in side is a kind of oil tank of horizontal positioned, and the oil tank shape of cross section is not regular circular, ellipse or rectangle, but with very big camber line of straight line or curvature and the excessive closed geometric shape formed of circular arc.The oil tank volume in this cross section is big, is current widely used oily substance storage and cask.
Playing the member of containment role in the oil tank, is exactly tank body except that the end socket at two ends.Because of existing most oil tanks are double wall, interior tank body and outer tank body are arranged, interior tank body is equal or close with outer tank body wall thickness, is close to mutually but the slit is arranged, and the cross section of interior tank body and the outer tank body all shape of cross section with oil tank is identical, and manufacturing process is basic identical.
Originally oil tank body adopts the circumferential weld welding, will be welded into length of tank according to the annular plate that the sheet material width is made with circular weld exactly, and the longitudinal seam of adjacent annular plate staggers mutually.The oval oil tank in side is irregular because of cross sectional shape, and circular weld is difficult to adopt weldering automatically.The quality of manual welding is many because of joint, and is subjected to factor affecting such as operator's technical merit and mood, and quality stability is not high.
Present widely used two-compartment oil tank has introduces the making of tank body with vertically connecting weld seam.Be the assembling of convenient inside and outside tank body, outer tank body is that semi-circular plate is welded into two and half outer tank body assemblies with circumferential weld, then it is coated on the interior tank body outside that makes, and uses the twice longitudinal seam that two and half outer tank body assemblies are welded together again.Owing to be welded into by a plurality of plates, the longitudinal joint dual-side is uneven, use overlap joint, but the outward appearance injustice is not beautiful, uses butt weld, even can use weldering automatically through artificial reconditioning, welding quality is also influenced.
Summary of the invention
The object of the invention is to overcome the shortcoming in the above-mentioned technology, a kind of oil tank body longitudinal joint butt welding process is proposed, make the splicing of tank body use weldering automatically greatly possibly, to obtain high-quality weld seam, improve the oil tank sealing, and make longitudinal seam that enough intensity be arranged, improve the first-time qualification rate of oil tank seal tightness test, and in the strip plate, reduce to be shaped and make workload, reduce manufacture difficulty.
The object of the invention is realized by following technical scheme: this oil tank body longitudinal joint butt welding process, the side that this oil tank body cross section is made up of straight line and transition arc is oval, manufacture craft comprises that plate is prefabricated, welding in advance and finally weld three steps, it is characterized in that each plate that plate is prefabricated into all is the strip that length equals length of tank, weld weld seam and final welding weld seam in advance and all be vertical straight bead along the length of tank direction.
When oil tank body comprises the double-deck tank body of outer tank body 2 and interior tank body 18, the weld seam of welding in advance 7 of outer tank body and interior tank body, the final welding weld seam 10 of outer tank body, the final welding weld seam 19 of interior tank body all is vertical straight bead.
In the prefabricated process of plate, the width of each plate blanking should be able to make the side of plate avoid transition arc 8 and bending 9, just makes to weld weld seam 7, outer tank body in advance and finally weld weld seam 10 and interior tank body and finally weld weld seam 19 and avoid transition arc 8 and bending 9.
In the prefabricated process of plate, as plate length direction such as need during with the splicing of short slab material, the piece of adjacent plate will stagger.
In the prefabricated process of plate, should snap at side after each plate blanking and connect groove, then at relevant plate, comprise outer tank deck left plate 15, outer tank deck right plate 16, cut manhole and pore in the outer tank deck on plate 17 and the interior tank body top board, when a hole is haveed no alternative but out on two plates, to use the Numerical control cutting device aperture, then to relevant plate, comprise outer jar of end transition arc plate 11, outer tank deck transition arc plate 13, plate 17 in the outer tank deck, plate 14 and the corresponding arc plate of interior tank body form making at the bottom of the outer tank body, use bending, mold pressing or roll method such as volume and make sheet bending forms transition arc 8 and bending 9.
Make two and half tank bodies with welding the strip plate that plate is prefabricated in advance by welding weld seam 7 connections in advance, weld weld seam 7 in advance and adopt two-sided automatic weldering, wherein first is carried out once uninterrupted non junction and welds automatically on the automatic welding tooling of Pneumatic clamping butt welding, and second automatic welding tractor of employing track welds.
With final welding a whole tank body is made in the connection of half tank body, welded automatically, all finish with the automatic welding tractor of track for the final welding weld seam 19 employing two sides of double-deck jar of interior tank body 18; For two final welding weld seams 10 of double-deck jar outer tank body 2, be the automatic welding line of one-side band backing plate, carry out with the automatic welding tractor of track, backing plate is exactly the interior tank body 18 that sticks together with outer tank body 2.
Advantage of the present invention is: at first, because can adopt high-quality automatic weldering, and adopted two-sided automatic weldering as far as possible, the sealing of weld seam has improved, and make longitudinal seam that enough intensity be arranged, and improved the first-time qualification rate of oil tank seal tightness test, guaranteed the quality of oil tank body.
Secondly, in the strip plate, the making that need not be shaped that has, the plate of making that need be shaped also only contains the curved surface that need are made, and the making workload that is shaped is little, and manufacture difficulty is less.
At last, during the longitudinal joint welding, inside and outside tank combination easily.Before the outer tank body 2 closed welding, only need to move and regulate little tank body assembly, fasten easily than the outer canister assembly of the two halves that are welded into circumferential weld.
Description of drawings
Fig. 1 is the axonometric drawing of a square oval cross section oil tank.
Fig. 2 is the shaft side figure after the closed shaping of the outer tank body of oil tank among Fig. 1.
Fig. 3 is the explosive view of Fig. 2 China and foreign countries tank body.
Fig. 4 is the interior tank body assembling schematic isometric of outer tank body and the interior end socket of band and other inner parts of oil tank among Fig. 1.
The specific embodiment
Accompanying drawings the present invention.
Fig. 1 shows the oil tank of a horizontal positioned, and from Fig. 2, the cross section of oil tank is side's ellipse of being made up of straight line and transition arc.Oil tank is shown that by fangs 3, pipe fitting 4, operating case 5, manhole 6, outer end socket 1, outer tank body 2 and Fig. 4 interior tank body 18 and interior end socket 22 are formed.Interior tank body 18 and interior end socket 22 are covered by within outer tank body 2 and the outer end socket 1, form the double wall oil tank body.The outside of end socket 22 in interior tank body 18 is coated on, outer end socket 1 and outer tank body 2, interior end socket 22 all is an overlap joint with interior tank body 18.All have discontinuous elongated slot 21 on interior end socket 22 and the interior tank body 18.After inside and outside tank body posts, in elongated slot 21, couple together with outer tank body 2 and interior tank body 18 and with outer end socket 1 and interior end socket 22 with plug weld.The welding seam of interior tank body 18 and the welding seam of outer tank body 2 should stagger, and the welding seam of interior end socket 22 and the welding seam of outer end socket 1 should stagger.
The outer tank body 2 that shows with Fig. 2 and Fig. 3 is that appearance and size is 4680 millimeters of length, 2540 millimeters of height, the tank body 2 that 2323 millimeters of width and wall thickness are 5 millimeters, equal the strip plate of the length of tank body 2 by length, comprise outer jar of end transition arc plate 11, outer tank body side plate 12, outer tank deck transition arc plate 13, plate 14 at the bottom of the outer tank body, outer tank deck left plate 15, outer tank deck right plate 16, plate 17 usefulness are welded weld seam 7 and outer tank body in advance and are finally welded weld seam 10 and be welded in the outer tank deck, welding weld seam 7 in advance all is longitudinal seam with final splicing welding joint 10, and avoids the bending 9 and the transition arc 8 of outer tank body 2.
The splicing welding joint in advance 7 of outer tank body is used for earlier above-mentioned strip plate 11,12,13,14,15,16 being welded together into a big tank body assembly 20.The weld seam on plate 17 both sides is final welding weld seam 10 in the outer tank deck, and being becomes closed tank body shape with plate 17 in the outer tank deck of last piece and 20 weldings of tank body assembly.
The length of interior tank body 18 and wall thickness are identical with outer tank body 2, also are by the strip plate, finally weld weld seam 19 longitudinally and are welded into welding weld seam 7 and interior tank body longitudinally in advance.The splicing of interior tank body 18 can be with reference to Fig. 4.Final welding weld seam 19 has twice up and down, will weld with welding two and half good tank body assemblies of weld seam 7 splicings in advance.
Manufacturing process divides that plate is prefabricated, plate welds in advance and finally weld three parts.
During plate is prefabricated:
The first, blanking.According to the size cutting of each strip plate sheet material, determine the width of plate according to the distance between sheet material width and weld seam through surface preparation.The plate length direction is made with a plate.
The second, open groove.First face that weld seam 7 and interior tank body finally weld weld seam 19 that welds in advance of two-sided welding is opened groove, and single fillet welded outer tank body finally welds the groove of weld seam 10 and will open greatly.Note the direction of groove, the groove of outer tank body 2 should be outside, and the groove of interior tank body 18 should be inside.
Three, the hole on cutting manhole, pipe fitting hole and other tank bodies.Cut Kong Shiying and note the direction of groove by second.
Four, shaping is made.Tank body 2 is an example in addition, crosses over the plate of bending 9 and transition arc 8; In at the bottom of outer jar of end transition arc plate 11, outer tank deck transition arc plate 13, the outer tank body in plate 14 and the outer tank deck plate 17 need to be shaped and make, and be in the making that just need not be shaped of the outer tank body side plate 12 of plate of straightway, outer tank deck left plate 15, outer tank deck right plate 16.Transition arc is shaped and also carries out with wrap direction, forms one with ten road bendings and is close to 90 transition arc 8.Should note the direction of groove during shaping by second.
During sheet material welds in advance:
Weld weld seam 7 in advance and adopt two-sided automatic weldering.Wherein first is welded on the automatic welding tooling of Pneumatic clamping butt welding, and second employing small rail car welds automatically.By the order of connection two plate grooves are made progress to connecting earlier, be clipped on the frock, carry out once straight line welding incessantly.Carry out first welding of following two plates then, so carry out up to the splicing of finishing this tank body assembly.To splice good tank body assembly upset again, second welding carried out at the back side of each first weld seam of cleaning successively.
The final welding of tank body:
The final welding weld seam 19 of interior tank body 18 adopts the two sides to weld automatically, and all weld automatically with small rail car on the two sides.First outside weld is the automatic weldering of band groove, carries out second weldering automatically again after having cleared up the back side.
Among Fig. 4, the assembling of inside and outside tank body and the amalgamation of outer tank body 2, be that the interior tank body 18 of end socket 22 and inner other parts is put in the middle of the tank body assembly 20 of the outer tank body 2 that welding is good in advance in the band that will weld earlier, put the plate 17 at top then, get up with finally welding weld seam 10 closures.
Because interior tank body 18 just in time is positioned at the following of weld seam 10 and is close to weld seam, the final welding weld seam 10 of outer tank body 2 is automatic welderings of one-side band backing plate, and interior tank body 18 just becomes the backing plate of weld seam 10.The automatic welding tractor of final welding weld seam 10 usefulness tracks carries out.
Adopt big electric current during final welding weld seam 10 welding, most of location of weld seam 10 makes in tank body 18 and outside tank body 2 weld together, this has also just played the same purpose of plug weld among Fig. 4, tank body links together inside and outside making.
Claims (7)
1. oil tank body longitudinal joint butt welding process, the side that this oil tank body cross section is made up of straight line and transition arc is oval, manufacture craft comprises that plate is prefabricated, welding in advance and finally weld three steps, it is characterized in that each plate that plate is prefabricated into all is the strip that length equals length of tank, weld weld seam and final welding weld seam in advance and all be vertical straight bead along the length of tank direction.
2. according to the described oil tank body longitudinal joint of claim 1 butt welding process, when it is characterized in that oil tank body comprises the double-deck tank body of outer tank body (2) and interior tank body (18), the weld seam of welding in advance (7) of outer tank body and interior tank body, the final welding weld seam (10) of outer tank body, the final welding weld seam (19) of interior tank body all is vertical straight bead.
3. according to claim 1 or 2 described oil tank body longitudinal joint butt welding process, it is characterized in that in the prefabricated process of plate, the width of each plate blanking, should be able to make the side of plate avoid transition arc (8) and bending (9), just make and weld weld seam (7), outer tank body in advance and finally weld weld seam (10) and interior tank body and finally weld weld seam (19) and avoid transition arc (8) and bending (9).
4. according to claim 1 or 2 described oil tank body longitudinal joint butt welding process, it is characterized in that in the prefabricated process of plate, as the plate length direction need be with short slab material when splicing, the piece of adjacent plate will stagger.
5. according to claim 1 or 2 described oil tank body longitudinal joint butt welding process, it is characterized in that in the prefabricated process of plate, should snap at side after each plate blanking and connect groove, then at relevant plate, comprise outer tank deck left plate (15), outer tank deck right plate (16), cutting manhole and pore on plate in the outer tank deck (17) and the interior tank body top board, when a hole is haveed no alternative but out on two plates, to use the Numerical control cutting device aperture, then to relevant plate, comprise outer jar end transition arc plate (11), outer tank deck transition arc plate (13), plate in the outer tank deck (17), plate at the bottom of the outer tank body (14) and the corresponding arc plate of interior tank body form making, with bending or mold pressing or roll the volume method and make sheet bending, form transition arc (8) and bending (9).
6. according to the described oil tank body longitudinal joint of claim 1 butt welding process, it is characterized in that making two and half tank bodies by welding weld seam (7) connection in advance with welding the strip plate that plate is prefabricated in advance, weld weld seam (7) in advance and adopt two-sided automatic weldering, wherein first is carried out once uninterrupted non junction and welds automatically on the automatic welding tooling of Pneumatic clamping butt welding, and second automatic welding tractor of employing track welds.
7. according to the described oil tank body longitudinal joint of claim 1 butt welding process, it is characterized in that a whole tank body being made in the connection of half tank body with final welding, final welding weld seam (19) for double-deck jar of interior tank body (18) adopts the two sides to weld automatically, all finishes with the automatic welding tractor of track; For two final welding weld seams (10) of double-deck jar of outer tank body (2), be the automatic welding line of one-side band backing plate, carry out with the automatic welding tractor of track, backing plate is exactly the interior tank body (18) that sticks together with outer tank body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101674741A CN102248314A (en) | 2011-06-21 | 2011-06-21 | Longitudinal-weld-joint welding process for tank bodies of oil tanks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101674741A CN102248314A (en) | 2011-06-21 | 2011-06-21 | Longitudinal-weld-joint welding process for tank bodies of oil tanks |
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| CN102248314A true CN102248314A (en) | 2011-11-23 |
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| CN2011101674741A Pending CN102248314A (en) | 2011-06-21 | 2011-06-21 | Longitudinal-weld-joint welding process for tank bodies of oil tanks |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786032A (en) * | 2014-01-24 | 2014-05-14 | 中国核工业二三建设有限公司 | Method for installing waste water receiving tank |
| USD915945S1 (en) | 2016-12-20 | 2021-04-13 | Michael Kloepfer | Cylindrical semi-trailer |
| US11034278B2 (en) | 2016-12-20 | 2021-06-15 | Titan Trailers Inc. | Cylindrical cargo container construction |
| US11780359B2 (en) | 2016-12-20 | 2023-10-10 | Michael Kloepfer | Cylindrical semi-trailer |
| US11840398B2 (en) | 2017-09-22 | 2023-12-12 | Titan Trailers Inc. | Quasi-cylindrical cargo container and construction |
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| EP0799739A1 (en) * | 1996-04-01 | 1997-10-08 | Salzburger Aluminium Aktiengesellschaft | Fuel tank with baffle wall for vehicles |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786032A (en) * | 2014-01-24 | 2014-05-14 | 中国核工业二三建设有限公司 | Method for installing waste water receiving tank |
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| USD915945S1 (en) | 2016-12-20 | 2021-04-13 | Michael Kloepfer | Cylindrical semi-trailer |
| US11034278B2 (en) | 2016-12-20 | 2021-06-15 | Titan Trailers Inc. | Cylindrical cargo container construction |
| US11780359B2 (en) | 2016-12-20 | 2023-10-10 | Michael Kloepfer | Cylindrical semi-trailer |
| US11850989B2 (en) | 2016-12-20 | 2023-12-26 | Titan Trailers Inc. | Cylindrical cargo container construction |
| US11840398B2 (en) | 2017-09-22 | 2023-12-12 | Titan Trailers Inc. | Quasi-cylindrical cargo container and construction |
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Application publication date: 20111123 |