CN108971784A - The anti-deformation method of large-size stainless steel groove tank bottom plate under hot environment - Google Patents
The anti-deformation method of large-size stainless steel groove tank bottom plate under hot environment Download PDFInfo
- Publication number
- CN108971784A CN108971784A CN201710400544.0A CN201710400544A CN108971784A CN 108971784 A CN108971784 A CN 108971784A CN 201710400544 A CN201710400544 A CN 201710400544A CN 108971784 A CN108971784 A CN 108971784A
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- welding
- plate
- tank bottom
- groove tank
- deformation
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Classifications
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The anti-deformation method of large-size stainless steel groove tank bottom plate under a kind of hot environment, characterized by the following steps: a, margin plate are the angular deformation for reducing butt weld before welding, reversible deformation gantry fixture is used in group to point postwelding, gantry fixture includes ∏ shape small arc shaped frame (1) and big portal frame (2), b, the welding deformation to prevent side inside and outside the big fillet weld of tank bottom from generating when welding, it must be rigidly fixed inside using fixture or back thick stick in outside before welding, fixture includes the 1st snap-gauge (6) and the 2nd snap-gauge (8).The present invention has the characteristics that more longer than usual welding stress release time for the bottom plate welding under high temperature, high humidity, wind sand environment, cause welding deformation after avoiding release, the welding quality of groove tank bottom plate is good, pass through the check criteria that U.S.'s ASME standard and Saudi Arabia SABIC standard be combined with each other and be complementary to one another, the advantages of having won owner's praise, having had accumulated the manufacturing experience of relevant petrochemical industry groove tank.
Description
Technical field
The present invention relates to a kind of welding of steel tank tank bottom, specifically, being large-size stainless steel slot under a kind of hot environment
The anti-deformation method of tank bottom.
Background technique
Chinese patent CN102069307 B disclosed a kind of flat storage tank bottom plate welding side of large size on August 1st, 2012
Method, including following steps: (1) prefabricated several piece center plate, and by being formed after several pieces of center plate tiling docking or overlap joint
Circular flat bottom storage tank bottom plate, and correspond to the bottom plate seam between adjacent center plate in being dislocatedly distributed, then by adjacent center plate spot welding
It is fixed；(2) prefabricated several pieces of scallops balsh plate, then by scallop balsh plate along flat storage tank bottom plate outer circle tiling after shape
Margin plate is circularized, the outer ring surface of the inner ring surface and flat storage tank bottom plate of the annular edge listrium matches.But its groove tank bottom
Plate it is prefabricated in do not account for cutting surplus and weld allowance for shrinkage, do not account for the set-type diameter of tank bottom typesetting figure yet, press
Design diameter amplification reserve, the production precision for directly resulting in prefabricated storage tank bottom plate is low, so that generating quality problems.
In addition, " groove tank fabrication and installation arrangement and method for construction " (referring to naughty beans net), discloses tank bottom installation steps: (1) storage tank base
It is qualified that plinth is reviewed, and fashioned iron, bottom plate anti-corrosion are installed after approving.(2) basic unwrapping wire: on the basis of release center line, and mark
The circumference of margin plate outer rim.Camber line is marked with the template of arc length 2m, then marks margin plate abutment joint position by template orientation
Line cuts off the overlapping position of backing plate and fashioned iron when being laid with backing plate, is welded on fashioned iron side, the level after guaranteeing tank bottom installation
Degree.(3) it is laid with margin plate, divides both sides symmetrical laying, pays attention to abutment joint spot welding upper padding plate.(4) partition in being laid with, middle partition is therefrom
The heart starts to carry out to both sides.(5) tank bottom is welded, using the smallest welding procedure of contraction distortion and welding procedure.However, this tank
Bottom installation method generates groove tank bottom plate bumps phenomenon, influences groove tank quality.
Again according to " the concave-convex overproof control in large-scale groove tank bottom plate part " (referring to Guangxi Technical College's journal, Qin Yaobang, the 14th
Volume, the 4th phase, in December, 2003), the vertical groove tank of a kind of groove tank bottom internal diameter 14m, high 27-32m are disclosed, is grown despite the use of
The larger-size plate of width, and soldered is made the well-balanced distribution of welding heat, but bottom occurred with bottom plate central symmetry arrangement
The deformation of unevenness of plate postwelding 32-45mm.
Therefore known large-scale groove tank bottom plate welding deformation there are problems that it is above-mentioned various inconvenient and.
Summary of the invention
The purpose of the present invention is to propose a kind of hot environment for meeting Unite States Standard API650 Yu Saudi Arabia SABIC standard
The anti-deformation method of lower large-size stainless steel groove tank bottom plate.
To achieve the above object, the technical solution of the invention is as follows:
The anti-deformation method of large-size stainless steel groove tank bottom plate under a kind of hot environment, it is characterised in that the following steps are included:
A, margin plate is the angular deformation for reducing butt weld before welding, uses reversible deformation gantry fixture, institute in group to point postwelding
Stating gantry fixture includes ∏ shape small arc shaped frame and big portal frame；Two ∏ shape small arc shaped framves are respectively welded and are fixed on margin plate weldering
On the 1st margin plate and the 2nd margin plate for stitching two sides；The upper lateral beam length 1000mm of the big portal frame of ∏ shape, across in two ∏ shapes
Above small arc shaped frame, two feet of ∏ shape, which are respectively welded, to be fixed on the 1st margin plate and the 2nd margin plate；Group to point welds preceding pad
Plate pads under the 1st margin plate and the 2nd edge plate welding seams；Wedge hammer driven small arc shaped frame below the crossbeam and big gantry are used again
The welding anti-distortion of pre-made 6-8mm between above frame crossbeam, forces the 1st margin plate of pressing and the 2nd margin plate to be welded；Welding
Reversible deformation gantry fixture must be removed at once afterwards；
B, to prevent the welding deformation generated when side is welded inside and outside the big fillet weld of tank bottom, fixture must be used in outside inside before welding
Or back thick stick is rigidly fixed, fixture includes the 1st snap-gauge and the 2nd snap-gauge；1st snap-gauge be thickness 10mm right angled triangle steel plate, the 1st
One right-angle side of snap-gauge is rigidly fixed on the outside of groove tank siding, and another right-angle side is rigidly fixed on groove tank bottom plate, and the 2nd snap-gauge is
The thick 10mm steel plate of the similar right-angled trapezium of thick 10mm, the long 50mm in bottom thereon, go to the bottom long 600mm, and a right-angle side of the 2nd snap-gauge is rigid
Property be fixed on the inside of groove tank siding, another right-angle side is rigidly fixed on groove tank bottom plate；The spacing that fixture reinforces support must not be big
In 1 meter, and the construction of welding process is not interfered, it is dismountable that fixture must be soldered rear in all weld seams of groove tank bottom plate.
The anti-deformation method of large-size stainless steel groove tank bottom plate can also use technology below under hot environment of the invention
Measure further realizes.
Method above-mentioned, wherein V-shaped before the splicing seam welding of the 1st margin plate and the 2nd margin plate.
Method above-mentioned, wherein being equipped with welding gap between two articles of right-angle sides of the 2nd snap-gauge.
After adopting the above technical scheme, the anti-deformation method of large-size stainless steel groove tank bottom plate has under hot environment of the invention
It has the advantage that
1, feature more longer than usual welding stress release time, welding are welded for the bottom plate under high temperature, high humidity, wind sand environment
Technical measures design is tight, strong operability, the welding stress delivery mode after the completion of success dashpot tank bottom welding procedure,
Cause welding deformation after avoiding release.
2, the welding anti-deformation measure of groove tank bottom plate is thorough, passes through U.S.'s ASME standard and Saudi Arabia SABIC standard phase
The check criteria being complementary to one another again is mutually combined, owner's praise has been won, has had accumulated the manufacturing experience of relevant petrochemical industry groove tank, is increased
Enter the confidence and courage of landification equipment manufacturing.
Detailed description of the invention
Fig. 1 is gantry clamp structure schematic diagram of the anti-angular deformation of the stainless steel sink tank bottom of the embodiment of the present invention；
Fig. 2 is the fixture structure signal for preventing the big fillet weld welding deformation of tank bottom of the stainless steel sink tank bottom of the embodiment of the present invention
Figure.
In figure: 1 small arc shaped frame, 2 big portal frames, 3 wedge sliding blocks, 4 the 1st margin plates, 5 backing plates, 6 the 1st snap-gauges, 7 groove tank walls
Plate, 8 the 2nd snap-gauges, 9 groove tank bottom plates, 10 welding gap, 11 the 2nd margin plates.
Specific embodiment
With reference to embodiments and its attached drawing further explains the present invention.
Embodiment 1
The anti-deformation method of large-size stainless steel groove tank bottom plate under hot environment of the invention, comprising the following steps:
Fig. 1 is gantry clamp structure schematic diagram of the anti-angular deformation of the stainless steel sink tank bottom of the embodiment of the present invention.
A, margin plate is before welding the angular deformation for reducing butt weld, is pressed from both sides in group to point postwelding using reversible deformation gantry
Tool, gantry fixture includes ∏ shape small arc shaped frame 1 and big portal frame 2；Two ∏ shape small arc shaped framves 1 are respectively welded and are fixed on
On the 1st margin plate 4 and the 2nd margin plate 11 of edge plate welding seams two sides；The upper lateral beam length 1000mm of the big portal frame 2 of ∏ shape, it is horizontal
Across two 1 tops of ∏ shape small arc shaped frame, two feet of ∏ shape, which are respectively welded, is fixed on the 1st margin plate 4 and the 2nd margin plate 11
On；Before group to point weldering with the liner of backing plate 5 under the 1st margin plate 4 and 11 weld seam of the 2nd margin plate；It is small with 3 hammer driven of wedge again
The welding anti-distortion of pre-made 6-8mm, forces and flattens the 1st margin plate between above 2 crossbeam of 1 below the crossbeam of portal frame and big portal frame
4 and the 2nd margin plate 11 is welded；Reversible deformation gantry fixture must be removed after welding at once.1st margin plate 4 and the 2nd side
It is V-shaped before the splicing seam welding of listrium 10.
Fig. 2 is the fixture structure for preventing the big fillet weld welding deformation of tank bottom of the stainless steel sink tank bottom of the embodiment of the present invention
Schematic diagram.
B, it to prevent the welding deformation generated when side is welded inside and outside the big fillet weld of tank bottom, must be used in outside inside before welding
Fixture or back thick stick are rigidly fixed, and fixture includes the 1st snap-gauge 6 and the 2nd snap-gauge 8；1st snap-gauge is thickness 10mm right angled triangle steel
Plate, a right-angle side of the 1st snap-gauge 6 are rigidly fixed in 7 outside of groove tank siding, and another right-angle side is rigidly fixed on groove tank bottom plate 9,
2nd snap-gauge is the thick 10mm steel plate of the similar right-angled trapezium of thickness 10mm, thereon the long 50mm in bottom, and go to the bottom long 600mm, the 2nd snap-gauge
One right-angle side is rigidly fixed in 7 inside of groove tank siding, and another right-angle side is rigidly fixed on groove tank bottom plate 9；Fixture reinforces support
Spacing be not greater than 1 meter, and do not interfere the construction of welding process, fixture must can after all weld seams of groove tank bottom plate are soldered
It removes.Welding gap 10 is equipped between two articles of right-angle sides of the 2nd snap-gauge.It is the thick right angle 10mm that c, which is the 1st snap-gauge, in Fig. 2
The 300mm the length of the hypotenuse of triangular steel plate；A is the 50mm length at the upper bottom of similar right-angled trapezium, and b is under similar right-angled trapezium
The 600mm length at bottom；H is the 40mm height of the other side.The size in gap 10 is 45*30mm.
The material of reversible deformation gantry fixture and fixture is identical as groove tank tank body material in the present embodiment.
The present invention has substantive distinguishing features and significant technological progress, large-size stainless steel groove tank under hot environment of the invention
The anti-deformation method of bottom plate, sets up working shed at the construction field (site), prevents the influence of wind and rain welding quality, establishes complete set
Management system is welded, practicable welding management measure is formulated, works out safe and reliable welding procedure technique, make seam deformation
It checks up to standard, passes through the check criteria of Unite States Standard Yu Saudi Arabia SABIC.
The anti-deformation side of large-size stainless steel groove tank bottom plate under hot environment under high temperature of the invention, high humidity, wind sand environment
Method is used in the vertical stainless steel groove tank engineering of Saudi Arabia 20,000, and significant effect has been widely recognized.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or variation.Therefore, all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (3)
1. the anti-deformation method of large-size stainless steel groove tank bottom plate under a kind of hot environment, it is characterised in that the following steps are included:
A, margin plate is the angular deformation for reducing butt weld before welding, uses reversible deformation gantry fixture, institute in group to point postwelding
Stating gantry fixture includes ∏ shape small arc shaped frame (1) and big portal frame (2)；Fixation is respectively welded in two ∏ shape small arc shaped framves (1)
On the 1st margin plate (4) of edge plate welding seams two sides and the 2nd margin plate (11)；The upper lateral beam length of the big portal frame of ∏ shape (2)
1000mm, across above two ∏ shape small arc shaped framves (1), two feet of ∏ shape be respectively welded be fixed on the 1st margin plate (4) and
On 2nd margin plate (11)；Group to point welds preceding backing plate (5) liner under the 1st margin plate (4) and the 2nd margin plate (11) weld seam；
Again with the weldering of pre-made 6-8mm between wedge (3) hammer driven small arc shaped frame (1) below the crossbeam and big portal frame (2) crossbeam top
Reversed deformation forces the 1st margin plate (4) of pressing and the 2nd margin plate (11) to be welded；Reversible deformation must be removed after welding at once
Gantry fixture；
B, to prevent the welding deformation generated when side is welded inside and outside the big fillet weld of tank bottom, fixture must be used in outside inside before welding
Or back thick stick is rigidly fixed, fixture includes the 1st snap-gauge (6) and the 2nd snap-gauge (8)；1st snap-gauge is thickness 10mm right angled triangle steel
Plate, a right-angle side of the 1st snap-gauge (6) are rigidly fixed on the outside of groove tank siding (7), and another right-angle side is rigidly fixed in groove tank bottom plate
(9) on, the 2nd snap-gauge is the thick 10mm steel plate of the similar right-angled trapezium of thickness 10mm, thereon the long 50mm in bottom, and go to the bottom long 600mm, the 2nd
One right-angle side of snap-gauge is rigidly fixed on the inside of groove tank siding (7), and another right-angle side is rigidly fixed on groove tank bottom plate (9)；Card
The spacing that tool reinforces support is not greater than 1 meter, and does not interfere the construction of welding process, and fixture must be in all weld seams of groove tank bottom plate
It is dismountable to be soldered rear.
2. the welding method of large-size stainless steel groove tank bottom plate under hot environment as described in claim 1, which is characterized in that described
It is V-shaped before the splicing seam welding of 1st margin plate (4) and the 2nd margin plate (10).
3. the welding method of large-size stainless steel groove tank bottom plate under hot environment as described in claim 1, which is characterized in that described
Welding is equipped between two articles of right-angle sides of the 2nd snap-gauge with gap (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400544.0A CN108971784A (en) | 2017-05-31 | 2017-05-31 | The anti-deformation method of large-size stainless steel groove tank bottom plate under hot environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400544.0A CN108971784A (en) | 2017-05-31 | 2017-05-31 | The anti-deformation method of large-size stainless steel groove tank bottom plate under hot environment |
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| CN108971784A true CN108971784A (en) | 2018-12-11 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7500592B1 (en) * | 2005-06-24 | 2009-03-10 | Davor Petricio Yaksic | Storage tank construction |
| CN101440669A (en) * | 2008-12-21 | 2009-05-27 | 中油吉林化建工程股份有限公司 | Non-rolling construction method for vertical cylinder storage tank and fixture thereof |
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN203865305U (en) * | 2014-05-06 | 2014-10-08 | 辽河石油勘探局油田建设工程二公司 | Novel oil storage tank of 15 ten thousand cubic meters connected through assembled clamps |
| CN204711418U (en) * | 2015-06-11 | 2015-10-21 | 中石化第五建设有限公司 | A kind of margin plate deformation adjustment device of storage tank bottom plate |
| CN105834551A (en) * | 2016-05-20 | 2016-08-10 | 中冶天工集团天津有限公司 | Welding method for large cylinder type steel storage tank bottom plate |
| CN106112295A (en) * | 2016-07-22 | 2016-11-16 | 四川电力建设三公司 | The control method of upside-down installation method storage tank bottom plate deformation |
-
2017
- 2017-05-31 CN CN201710400544.0A patent/CN108971784A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7500592B1 (en) * | 2005-06-24 | 2009-03-10 | Davor Petricio Yaksic | Storage tank construction |
| CN101440669A (en) * | 2008-12-21 | 2009-05-27 | 中油吉林化建工程股份有限公司 | Non-rolling construction method for vertical cylinder storage tank and fixture thereof |
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN203865305U (en) * | 2014-05-06 | 2014-10-08 | 辽河石油勘探局油田建设工程二公司 | Novel oil storage tank of 15 ten thousand cubic meters connected through assembled clamps |
| CN204711418U (en) * | 2015-06-11 | 2015-10-21 | 中石化第五建设有限公司 | A kind of margin plate deformation adjustment device of storage tank bottom plate |
| CN105834551A (en) * | 2016-05-20 | 2016-08-10 | 中冶天工集团天津有限公司 | Welding method for large cylinder type steel storage tank bottom plate |
| CN106112295A (en) * | 2016-07-22 | 2016-11-16 | 四川电力建设三公司 | The control method of upside-down installation method storage tank bottom plate deformation |
Non-Patent Citations (1)
| Title |
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| 赵劳社: "工装卡具及新工艺在大型钢制储罐干式正装法中的应用", 《科技信息》 * |
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