CN102218639A - Method for replacing tower barrel on site - Google Patents
Method for replacing tower barrel on site Download PDFInfo
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- CN102218639A CN102218639A CN2011101326137A CN201110132613A CN102218639A CN 102218639 A CN102218639 A CN 102218639A CN 2011101326137 A CN2011101326137 A CN 2011101326137A CN 201110132613 A CN201110132613 A CN 201110132613A CN 102218639 A CN102218639 A CN 102218639A
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- pressure vessel
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Abstract
The invention discloses a method for replacing a tower barrel on site, belonging to the technical field of pressure vessel manufacture, and relating to a method for repairing a tower which is a pressure vessel used for petroleum, chemical industry and chemical fertilizer industries. A method of fragmentation cutting and replacing is adopted, and the tower barrel is replaced. The method is convenient and quick, is free from limitation of operation space and does not need large hoisting equipment and transportation equipment, the repair cycle can be shortened, and the maintenance cost can be drastically lowered.
Description
Technical field
The present invention is the on-the-spot replacing method of a kind of tower pressure vessel (hereinafter to be referred as tower) cylindrical shell, belongs to pressure vessel manufacturing technology field, relates to a kind of pressure vessel that is used for oil, chemical industry, fertilizer industry---the repair method of tower.
Background technology
Tower is widely used in the production process of oil, chemical industry, fertilizer industry, is the vital main equipment in the technological process, and diameter can reach several meters, highly reaches hundred meters.
After tower comes into operation, owing to medium to reasons such as the burn into of tower cylindrical shell steel plate wash away, can produce the local cylindrical shell reduced thickness of tower, cause loaded area to reduce and have an accident; Or other defective that under the acting in conjunction of pressure, temperature, medium, produces.Therefore, in the actual production process, the situation ubiquity that the tower cylindrical shell is changed.
Present normally used method is:
1, makes a tower, integral replacing again;
2, adopt large-scale hanging device with tower overall pulling down from the basis, lifting lies in a horizontal plane in place under repair on the tooling device to on-the-spot open field with tower, or is transported to manufactory and carries out the cylindrical shell integral replacing.Cylindrical shell uses large-scale hanging device with the tower installation in position after changing again.
3, manufactory with steel plate roll, weld, organize to, detect, being made into needs the cylindrical shell integral body changed, is transported to on-the-spotly to change by large-scale hanging device.
Because tower in system, is distributed with a large amount of chemical industry equipments on every side, process pipelines is staggered to gather, and the operating space is restricted.Above-mentioned three kinds of methods all need to adopt large-scale lifting and transporting equipment, lifting and freight are bigger, large-scale hanging device One-Shift Costs every day can reach tens thousand of, and especially method 1 is changed because of local cylindrical shell has problems and is worth 1,000,000 even ten million whole equipment, causes waste bigger.
Summary of the invention
The present invention is the on-the-spot replacing method of a kind of tower cylindrical shell, and the cylindrical shell that needs are changed is taked the burst cutting, the method that burst is changed, and characteristics are not limited by the operating space in small space place under repair operation, more do not need large-scale hanging device, transporting equipment.The method is convenient and swift, can shorten the time between overhauls(TBO) greatly, reduces maintenance cost.
Technical scheme
The technical scheme that technical solution problem of the present invention is adopted is: take following operational sequence to changing the position cylindrical shell: remove tower tray, internals------------the cylindrical shell burst rolls----cutting part supports----burst cutting cylindrical shell----cylindrical shell burst replacing----welding girth joint----longitudinal seam welding----welding quality detection----tower tray, internals----whole pressure test leak-detecting that resets of changing the position line of setting up maintenance platform.
Description of drawings
Below in conjunction with drawings and Examples (with will change two of position cylindrical shells cut apart be replaced by example) the invention will be further described.
Fig. 1 changes the process schematic diagram for shell ring:
1 is support member among the figure, support member two ends and the inner wall of tower welding of replacing position; 2 tower cylindrical shells among the figure; 3 old cylindrical shells among the figure for the burst dismounting; 4 for rolling the new cylindrical shell of burst of renewal among the figure; 5 is the vertical cut-off rule of old cylindrical shell among the figure, also is the longitudinal seam after new shell ring is changed; 6 is old cylindrical shell hoop cut-off rule among the figure, also is the girth joint after new cylindrical shell is changed.
The specific embodiment
The technical solution problem specific embodiment of the present invention is:
1, enters tower by manhole, remove tower tray, the internals of changing the position;
2, utilize the original operating platform of tower as support, externally tower is changed the position and is set up maintenance platform, and maintenance platform requires firmly, safety, is convenient to operation.Maintenance platform installing hoist crane, quantity and elevating capacity meet the demands;
3, the tower cylindrical shell at needs replacing position is rule, draw hoop and vertical cut-off rule, burst quantity is determined (this example is divided into two with cylindrical shell) according to tower specification, replacing position upper column body weight;
4, roll the burst cylindrical shell according to line size and burst quantity, and carry out groove processing;
5, adopt channel-section steel or other section bars as support member, inner fixing at tower with the welding of tower wall, play effect to the cutting part barrel support, avoid the cylindrical shell burst to cut off destructions such as the back tilts because of top weight or wind load cause tower, collapses, fracture.The quantity of support member and weldquality satisfy the load-bearing requirement;
6, according to hoop of delimiting and vertical line of cut, cutting earlier, remove the cylindrical shell that is welded with the support member position, by being fixed on the hoist crane on the maintenance platform, with the old cylindrical shell safety jaw of the burst that cuts away to ground.Tower body after removing is carried out the reconditioning of girth joint groove;
7, with hoist crane the new cylindrical shell of burst rolled, corresponding site is lifted to changing the position;
8, new cylindrical shell of burst and the former tower cylindrical shell of having changed is grouping the size Control adjustment, when group satisfies the standard criterion requirement to size, carries out the girth joint welding;
9, carrying out burst by 5,6,7,8 pairs of another part cylindrical shells in the embodiment successively changes, when this moment, new cylindrical shell of burst and former tower cylindrical shell were grouping the size Control adjustment, should take into account the control of longitudinal seam angularity, then the longitudinal seam of welding ring weld seam and burst cylindrical shell successively;
10, change after cylindrical shell is vertical, the girth joint welding finishes, remove support member, crator is left in the cleaning polishing, detects by drawing and code requirement butt welded seam quality;
11, weldquality detect qualified after, tower tray, the internals of removing installed reset;
12, as requested tower is carried out withstand voltage test.
Claims (2)
1. the present invention is the on-the-spot replacing method of a kind of tower cylindrical shell, belongs to pressure vessel manufacturing technology field, relates to a kind of pressure vessel that is used for oil, chemical industry, fertilizer industry---the repair method of tower.It is characterized in that adopting the burst cutting, the method that burst is changed is changed the tower cylindrical shell.
2. according to claim 1, it is characterized in that specifically implementing operation and be: remove tower tray, internals----------------cutting part supports----burst cutting cylindrical shell----cylindrical shell burst replacing----welding girth joint----longitudinal seam welding----welding quality detection----tower tray, internals----whole pressure testing that resets that the cylindrical shell burst rolls of changing the position line of setting up maintenance platform.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011101326137A CN102218639A (en) | 2011-05-17 | 2011-05-17 | Method for replacing tower barrel on site |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011101326137A CN102218639A (en) | 2011-05-17 | 2011-05-17 | Method for replacing tower barrel on site |
Publications (1)
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CN102218639A true CN102218639A (en) | 2011-10-19 |
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Family Applications (1)
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CN2011101326137A Pending CN102218639A (en) | 2011-05-17 | 2011-05-17 | Method for replacing tower barrel on site |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102615492A (en) * | 2012-04-20 | 2012-08-01 | 陕西建工集团设备安装工程有限公司 | Hoisting butt joint method of tower-like containers |
CN105397351A (en) * | 2015-12-02 | 2016-03-16 | 中国化学工程第十四建设有限公司 | Onsite vertical mounting method for segmentally-prefabricated tower body |
CN106271362A (en) * | 2015-05-27 | 2017-01-04 | 宝山钢铁股份有限公司 | Water circulating pump pump housing outlet pipe is corroded the restorative procedure of flange circle |
CN110496417A (en) * | 2018-05-17 | 2019-11-26 | 中冶宝钢技术服务有限公司 | A kind of tar ammonia water separator lower part cone replaces construction technology |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6312324B1 (en) * | 1996-09-30 | 2001-11-06 | Osaka Diamond Industrial Co. | Superabrasive tool and method of manufacturing the same |
CN201785346U (en) * | 2010-09-08 | 2011-04-06 | 淄博北岳设备防护工程有限公司 | Convenient-detection type draping heat-insulating structure for coke tower |
-
2011
- 2011-05-17 CN CN2011101326137A patent/CN102218639A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6312324B1 (en) * | 1996-09-30 | 2001-11-06 | Osaka Diamond Industrial Co. | Superabrasive tool and method of manufacturing the same |
CN201785346U (en) * | 2010-09-08 | 2011-04-06 | 淄博北岳设备防护工程有限公司 | Convenient-detection type draping heat-insulating structure for coke tower |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102615492A (en) * | 2012-04-20 | 2012-08-01 | 陕西建工集团设备安装工程有限公司 | Hoisting butt joint method of tower-like containers |
CN102615492B (en) * | 2012-04-20 | 2013-12-18 | 陕西建工集团设备安装工程有限公司 | Hoisting butt joint method of tower-like containers |
CN106271362A (en) * | 2015-05-27 | 2017-01-04 | 宝山钢铁股份有限公司 | Water circulating pump pump housing outlet pipe is corroded the restorative procedure of flange circle |
CN106271362B (en) * | 2015-05-27 | 2018-06-26 | 宝山钢铁股份有限公司 | Water circulating pump pump housing outlet pipe is corroded the restorative procedure of flange circle |
CN105397351A (en) * | 2015-12-02 | 2016-03-16 | 中国化学工程第十四建设有限公司 | Onsite vertical mounting method for segmentally-prefabricated tower body |
CN110496417A (en) * | 2018-05-17 | 2019-11-26 | 中冶宝钢技术服务有限公司 | A kind of tar ammonia water separator lower part cone replaces construction technology |
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Application publication date: 20111019 |