CN109894765B - Manufacturing method of jacket container with inner groove as inner cylinder - Google Patents
Manufacturing method of jacket container with inner groove as inner cylinder Download PDFInfo
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- CN109894765B CN109894765B CN201910253053.7A CN201910253053A CN109894765B CN 109894765 B CN109894765 B CN 109894765B CN 201910253053 A CN201910253053 A CN 201910253053A CN 109894765 B CN109894765 B CN 109894765B
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Abstract
The invention relates to a production technology of a jacketed container, in particular to a manufacturing method of a jacketed container with an inner cylinder with an inner groove. The technical problem that the welding quality of the container is difficult to improve due to the fact that the inner barrel cannot be completely processed into the inner groove in the manufacturing process of the jacket container at present is solved. The method comprises the following steps: (1) a hole with the caliber smaller than that of the manhole is arranged in advance at the position of the inner cylinder to be provided with the manhole; welding the inner cylinder in a combined mode, welding an arc plate left by the pre-opening hole at the pre-opening hole from the outside, connecting a water injection pipe and a pressure gauge with the opening hole in the arc plate, and carrying out pressure testing on the inner cylinder; (2) sleeving the jacket and the inner barrel, continuously machining a manhole with the caliber larger than that of the pre-opened hole and an inner groove at the position of the pre-opened hole, and performing pressure test after the assembly welding of the jacket is finished; (3) and carrying out integral assembly welding of the equipment. The invention is suitable for pressure test of the jacket container with the inner groove as the inner cylinder, can process the weld groove and complete the pressure test according to the requirement, and improves the processing quality.
Description
Technical Field
The invention relates to a production technology of a jacketed container, in particular to a manufacturing method of a jacketed container with an inner cylinder with an inner groove.
Background
The jacket container is a common container in pressure container manufacturing, and the common jacket container needs to be subjected to three-time pressure testing, namely after the inner cylinder assembly is welded, after the jacket assembly and welding is finished and after the whole equipment is assembled and welded, but due to the special structure of the jacket container, the pipe orifices of the equipment are not required to be subjected to hole assembly before the jacket assembly and welding is finished, but the inner cylinder pressure testing needs to be carried out before the jacket assembly and welding so as to repair unqualified welding seams. If equipment needs an inner barrel folding opening which is not welded by adopting an inner groove, the pressure test of the jacket container is different from that of other common containers.
Particularly, each interface on the inner cylinder adopts an inner groove structure, so that the connection quality of the connecting pipe can be effectively improved, and further the overall quality of the container is improved, but the current processing and pressure testing method determines that a processing hole with an outer groove is reserved on the inner cylinder for welding operators to enter and exit, so that the overall quality of the container is limited. In view of the above, it is necessary to develop a method for processing and testing the pressure of the jacket container, so as to facilitate the testing of the pressure of the inner cylinder and the jacket during the manufacture of the jacket device.
Disclosure of Invention
The invention provides a method for manufacturing a jacketed container with an inner barrel as an inner groove, which aims to solve the technical problem that the welding quality of the container is difficult to improve because the inner barrel cannot be completely processed into the inner groove in the existing jacketed container manufacturing process.
The invention is realized by adopting the following technical scheme: a method for manufacturing a jacket container with an inner barrel with an inner groove comprises the following steps: (1) a hole with the caliber smaller than the manhole is formed in advance at the position of the inner cylinder where the manhole is to be formed, and other pipe joints of the inner cylinder are also manufactured into an inner groove; welding the inner cylinder in a combined mode, welding an arc plate left by the pre-opening hole at the pre-opening hole from the outside, connecting a water injection pipe and a pressure gauge with the opening hole in the arc plate, and carrying out pressure testing on the inner cylinder;
(2) sleeving the jacket and the inner barrel, continuously machining a manhole with the caliber larger than that of the pre-opened hole and an inner groove at the position of the pre-opened hole, and performing pressure test after the assembly welding of the jacket is finished;
(3) performing integral assembly welding of equipment, including welding of manhole connecting pipes and assembly welding of other connecting pipes in the inner cylinder; and testing the pressure after the whole assembly welding is finished.
According to the method, the inner cylinder is provided with the hole in advance for a welding worker to enter and exit, so that the arc plate can be welded at the position of the pre-opened hole to complete pressure test, then the final manhole is processed, the welding worker can weld the connecting pipe on the manhole inside the inner cylinder, all interfaces of the inner cylinder are guaranteed to be inner grooves, and the welding quality of the container is effectively improved.
A hole is processed in advance and pressure testing is carried out, an unqualified interface of a welding seam can be repaired, meanwhile, the following welding process is not influenced, and the welding quality of a following manhole is not influenced. The method is used for pressure test of the jacket container in the manufacturing process, thereby facilitating the pressure test of jacket equipment, simultaneously not changing the assembly sequence and ensuring the manufacturing quality of the equipment.
The invention has strong operability, is suitable for pressure test of the jacket container with the inner groove as the inner cylinder, can process the weld groove and finish the pressure test according to the requirement, does not influence the working procedures and other manufacturing processes, improves the manufacturing efficiency and quality of the equipment, and can be used for the pressure test and the manufacturing of the jacket container with the inner groove as the inner cylinder.
Drawings
The invention is further illustrated with reference to the figures and examples.
FIG. 1 is a schematic view of a jacket apparatus for a pressure test method of the present invention.
In the figure, the cylinder body is made of stainless steel, the inner diameter of the inner cylinder is DN1600mm, the wall thickness is 16mm, and the outer diameter of the manhole connecting pipe is phi 530 mm. Part number 2 is the inner tube, part number 3 is the jacket, part number 5 is the manhole, part number 6 is the takeover.
Fig. 2 is a schematic view of a pressure test structure of an inner cylinder, part number 1 is a pressure test device (a water injection pipe and a pressure gauge) installed on an arc plate left after opening holes, and part number 4 is a pre-opening hole.
Detailed Description
A method for manufacturing a jacket container with an inner barrel with an inner groove comprises the following steps: (1) a hole with the caliber smaller than the manhole is formed in advance at the position of the inner cylinder where the manhole is to be formed, and other pipe joints of the inner cylinder are also manufactured into an inner groove; welding the inner cylinder in a combined mode, welding an arc plate left by the pre-opening hole at the pre-opening hole from the outside, connecting a water injection pipe and a pressure gauge with the opening hole in the arc plate, and carrying out pressure testing on the inner cylinder;
(2) the arc plate can be reserved or removed, the jacket and the inner cylinder are sleeved, a manhole with the caliber larger than that of the pre-opened hole and an inner groove is continuously machined at the position of the pre-opened hole, and pressure testing is carried out after the assembly welding of the jacket is finished;
(3) performing integral assembly welding of equipment, including welding of manhole connecting pipes and assembly welding of other connecting pipes in the inner cylinder; and testing the pressure after the whole assembly welding is finished.
The internal diameter of the pre-opened hole is 500mm, and the internal diameter of the manhole is 530 mm.
The jacket and the inner cylinder are made of stainless steel, the inner diameter of the inner cylinder is DN1600, the wall thickness is 16mm, and the outer diameter of the manhole connecting pipe is phi 530.
As shown in figure 1, which is a structural schematic diagram of the container, the jacket is sleeved outside the inner cylinder, and all the connecting pipe pairs are assembled. The manhole is connected with a connecting pipe with the diameter of 530 mm.
As shown in fig. 2, according to actual conditions, take to press from both sides manhole in the cover inner tube and carry out the trompil in advance, with connecting the examination device on the arc board behind the trompil, with arc board and equipment trompil department welding (connect water injection pipe and manometer in arc board suitable position according to actual conditions), advanced interior tube welding carries out equipment assembly welding on next step again, in order to realize the pressure testing after the inner tube welding finishes, can guarantee simultaneously that each takeover of equipment carries out assembly welding after the equipment inner tube assembly welding finishes, in order to guarantee equipment quality.
In the traditional technology, if all the pipe holes of the inner cylinder are made into the inner grooves, personnel cannot come out of the inner cylinder after welding the pipe holes in the inner cylinder, and therefore the pipe holes with the outer grooves are required to be reserved for welding operation personnel to come in and go out, but all the pipe holes cannot be guaranteed to be the inner grooves, and the welding quality of the container cannot be improved. After the scheme of the invention is adopted, the manufacturing and the pressure test are not influenced, and simultaneously, all pipe holes of the inner cylinder can be ensured to be inner grooves, thereby effectively improving the welding quality.
Claims (3)
1. A method for manufacturing a jacket container with an inner groove as an inner cylinder is characterized by comprising the following steps: (1) a hole with the caliber smaller than the manhole is formed in advance at the position of the inner cylinder where the manhole is to be formed, and other pipe joints of the inner cylinder are also manufactured into an inner groove; welding the inner cylinder in a combined mode, welding an arc plate left by the pre-opening hole at the pre-opening hole from the outside, connecting a water injection pipe and a pressure gauge with the opening hole in the arc plate, and carrying out pressure testing on the inner cylinder;
(2) sleeving the jacket and the inner barrel, continuously machining a manhole with the caliber larger than that of the pre-opened hole and an inner groove at the position of the pre-opened hole, and performing pressure test after the assembly welding of the jacket is finished;
(3) performing integral assembly welding of equipment, including welding of manhole connecting pipes and assembly welding of other connecting pipes in the inner cylinder; and testing the pressure after the whole assembly welding is finished.
2. The method for manufacturing the jacketed vessel with the inner groove as the inner cylinder according to claim 1, wherein the inner diameter of the pre-opening is 500mm, and the inner diameter of the manhole is 530 mm.
3. The method for manufacturing a jacketed vessel with an inner groove as defined in claim 1 or 2, wherein the jacket and the inner cylinder are made of stainless steel, the inner diameter of the inner cylinder is DN1600, the wall thickness is 16mm, and the outer diameter of the manhole connecting pipe is phi 530 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910253053.7A CN109894765B (en) | 2019-03-29 | 2019-03-29 | Manufacturing method of jacket container with inner groove as inner cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910253053.7A CN109894765B (en) | 2019-03-29 | 2019-03-29 | Manufacturing method of jacket container with inner groove as inner cylinder |
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| Publication Number | Publication Date |
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| CN109894765A CN109894765A (en) | 2019-06-18 |
| CN109894765B true CN109894765B (en) | 2020-11-20 |
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| CN201910253053.7A Active CN109894765B (en) | 2019-03-29 | 2019-03-29 | Manufacturing method of jacket container with inner groove as inner cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110732753A (en) * | 2019-10-30 | 2020-01-31 | 四川亚西机器有限公司 | Welding process for manufacturing inner container of low-temperature liquid storage tanks |
| CN113070597B (en) * | 2021-03-10 | 2022-11-08 | 山西阳煤化工机械（集团）有限公司 | Method for assembling jacketed container |
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| RU2257304C2 (en) * | 2003-07-07 | 2005-07-27 | Фгуп "По Уралвагонзавод" Им. Ф.Э. Дзержинского | Method of manufacture of tank barrel with heating jacket |
| CN104249239B (en) * | 2013-06-28 | 2017-06-16 | 上海宝冶建设工业炉工程技术有限公司 | The preparation method of sleeve lime kiln inner sleeve |
| CN104646795B (en) * | 2015-02-06 | 2016-09-21 | 中国运载火箭技术研究院 | A kind of weak rigidity of 5M diameter, minor diameter manhole tank joint sealing circular-seam welding method |
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