CN1360991A - Welding process and welded part of bottom and skirt support for high pressure container - Google Patents
Welding process and welded part of bottom and skirt support for high pressure container Download PDFInfo
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- CN1360991A CN1360991A CN 00136871 CN00136871A CN1360991A CN 1360991 A CN1360991 A CN 1360991A CN 00136871 CN00136871 CN 00136871 CN 00136871 A CN00136871 A CN 00136871A CN 1360991 A CN1360991 A CN 1360991A
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Abstract
The present invention is welding process and welded part of bottom and skirt support for high pressure container. The ring welded part consists of a main body with L-shaped longitudinal section, an upwards turned horn and a downwards extending retainer ring. Unlike the available technology, the present invention has low cost, high efficiency, less material consumption and simple welding process.
Description
The present invention relates to the metal solder field in petrochemical industry and other equipment, particularly relate to the welding method and the weldment thereof of a kind of high-pressure bottle bottom (head) and skirt.
Have the production of a lot of products to carry out under the high temperature and high pressure condition in petrochemical production process, therefore, high-pressure bottle is a kind of petrochemical equipment that often will use.Because the thorough back chipping of welding requirements of high-pressure bottle bottom (head) and skirt, so the complex techniques process that it always is an input cost height, process is long, technical difficulty is big.At present, in the prior art the most frequent use mainly contain following method.
First method is the method that some oil plant of similar China is taked from the dewaxing reactor of external import.Its process roughly comprises: 1. the first annular boss that a loop diameter from top to bottom strengthens gradually in the design position built-up welding of high-pressure bottle bottom (head); 2. then the bottom of annular boss is processed and be suitable for the skirt welding, the circular cylinder of lower edge marginal zone groove.In addition, the top edge of skirt and boss welding also processes groove, and two above-mentioned groove butt joint backs form V-butt; 3. weld the circumferential welded seam at this groove place at last.This shows that not only cost height, waste are greatly, welding process is long, workload is big for this welding method, especially the one side welding method back side can't back chipping.This itself has just violated the high-pressure bottle design principle, and therefore domestic designing unit does not adopt this method.
Second method is the method that some oil plants of China are taked by the plate welding structure hydrogenation reactor of external import.Its practice is: 1, the interim annular slab of at first prefabricated about 6 millimeters thick, and the same material of its material and high-pressure bottle such as chrome-molybdenum steel, therefore needs special the order; 2, will weld the appropriate location that one section skirt shell ring of interim annular slab inserts the high-pressure bottle bottom (head) of inversion state, under preheat mode, on the interim annular slab between skirt and the high-pressure bottle bottom (head), carry out the hoop built-up welding then on the boundary; 3, still return to carry out back chipping after welding, will whole interim annular slab and the overlay cladding full scale clearance of merging mutually with overlay cladding thereof and polishing totally do magnetic powder inspection more on every side during back chipping hot down above-mentioned whole workpiece the upset; 4, weld the upper corners weld seam at last, thereby skirt and high-pressure bottle bottom (head) are welded together.These processes all are to carry out under preheat mode.This shows that the shortcoming of this technology is fairly obvious: 1. cost height, waste need to order goods, process as the interim annular slab of chrome-molybdenum steel greatly, all polish off again at last; 2. welding process is long, workload is big, complex process, and welding condition is very poor, all will carry out a large amount of hot back chipping and magnetic powder inspection after the welding each time.
The third method is basic identical with smithwelding structure hot-wall hydrogenation reactor.It at first want a special material customized identical with high-pressure bottle and internal diameter much smaller than high-pressure bottle internal diameter, external diameter cylindrical forged piece greater than the high-pressure bottle external diameter, be processed into a section of high-pressure bottle with this cylindrical forged piece then, this section comprises the part cylindrical shell and the part bottom (head) of high-pressure bottle, is useful on the circular cylinder that docks with skirt in this section bottom (head) outside.In order to prepare high-pressure bottle this " one section ", forging customized, except above-mentioned " internal diameter less than the high-pressure bottle internal diameter simultaneously external diameter greater than the high-pressure bottle external diameter ", its the about up and down machined allowance that also will reserve 30 millimeter more, in order to satisfy the requirement that the properties of product test is materialsed, the integral thickness of annular forging piece (being axial height) will increase about 250 millimeters simultaneously.This shows that though this method is feasible, its shortcoming also is very significant: 1. increased greatly forging weight, increased the machined workload, make the utilization rate of forging that 20% (yield rate that is annular element is about 20%) only be arranged; 2. particularly for this forging of some chrome-molybdenum steel container, except general performance test, will prepare 48 Charpy bars in order to do the step cold test, visible workload is big.In a word, this method cost-effective rate is low, consumptive material is many, process is complicated.
Purpose of the present invention is exactly in order to overcome or to alleviate the defective and the deficiency of above-mentioned prior art, can also satisfy the requirement of the thorough back chipping of weld seam, the welding method and the special-purpose weldment thereof of a kind of high-pressure bottle bottom (head) and skirt being provided.The welding method of high-pressure bottle bottom (head) of the present invention and skirt and special-purpose weldment thereof, the cost-effective rate that has overcome above-mentioned art methods effectively is low, the many wastes of consumptive material are big, process is complicated, big or the like the shortcoming of difficulty of processing, for a brand-new approach has been opened up in the welding of high-pressure bottle bottom (head) and skirt.
The welding method of high-pressure bottle bottom (head) of the present invention and skirt is achieved in that
One of the present invention is the welding method of a kind of high-pressure bottle bottom (head) and skirt, and it comprises the steps:
Prefabricated one of A stretches the intermediate weldment that the rake angle annular element is connected with skirt as bottom (head) in identical with high-pressure bottle bottom (head) material, stretch the rake angle annular element in described, annular upper uplifting angle that is stretched out by side direction annular element center in the main body of the similar shape in longitudinal section and the autonomous agent upper end and the baffle ring that stretches out downwards along inboard, main body lower end constitute;
B will stretch in above-mentioned the rake angle annular element be inverted, be enclosed within on the design attitude of high-pressure bottle bottom (head) of inversion state.Circle hoop lower angle weld seam under inversion state between welding upper uplifting angle and the bottom (head), the whole upset of postwelding returns to carry out back chipping again, during back chipping root of weld is thoroughly removed together with upper uplifting angle and with the bottom (head) superficial layer that root of weld merges mutually;
Circle hoop upper corners weld seam behind the C back chipping between welding main body upper end and the bottom (head);
The D steel plate that is complementary with above-mentioned bottom (head) material, the skirt that prefabricated one section diameter and main body adapt, skirt is enclosed within on the baffle ring that stretches out downwards inboard, main body lower end, narrow outer wide groove in forming between the two, weld the circumferential welded seam at this groove place then, postwelding carries out back chipping, during back chipping root of weld is thoroughly removed together with baffle ring.
The present invention two a kind of be used for the welding of high-pressure bottle bottom (head) and skirt in stretch the rake angle annular element, annular upper uplifting angle that is stretched out to the annular element center by the main body of the similar shape in longitudinal section and autonomous agent upper end and the baffle ring that stretches out downwards along inboard, main body lower end constitute.
Below, be described in further detail technical scheme of the present invention in conjunction with the accompanying drawings.
Fig. 1 is for stretching the structural representation of rake angle annular element in of the present invention.
As shown in Figure 1, one of the present invention's the high-pressure bottle bottom (head) and the welding method of skirt comprise the steps:
Prefabricated one of A stretches the intermediate weldment that the rake angle annular element is connected with skirt [9] as bottom (head) [8] in identical with high-pressure bottle bottom (head) material, stretch the rake angle annular element in described, annular upper uplifting angle [2] that is stretched out by side direction annular element center in the main body [1] of the similar shape in longitudinal section and autonomous agent [1] upper end and the baffle ring [3] that stretches out downwards along main body [1] inboard, lower end constitute;
B above-mentioned in stretch the rake angle annular element and carry out after, should in stretch the rake angle annular element and be inverted, be enclosed within on the design attitude of high-pressure bottle bottom (head) [8] of inversion state.For make bottom (head) [8] and in stretch the rake angle annular element rigging position reach designing requirement, can make it to mate with the way of polishing annular upper uplifting angle [2] wedge angle with the bottom (head) relevant position.Under inversion state, weld the circle of one between upper uplifting angle [2] and the bottom (head) [8] hoop lower angle weld seam [11] then.The surface of this hoop lower angle weld seam [11] is the same to straight flange [7] connecting portion with inboard horizontal sides [6] and medial shaft, is circular-arc transition.Back chipping was carried out in whole upset after welding was finished, and during back chipping root of weld was thoroughly removed together with upper uplifting angle [2] and with the bottom (head) superficial layer that root of weld merges mutually;
The C back chipping and carry out Non-Destructive Testing after, stretch one between rake angle annular element main body [1] upper end and the bottom (head) [8] in can on turning rolls, welding and enclose hoop upper corners weld seam [10];
The D steel plate that is complementary with above-mentioned bottom (head) [8] material, the skirt [9] that prefabricated one section diameter and main body [1] adapt, skirt [9] is enclosed within on the baffle ring [3] that stretches out downwards main body [1] inboard, lower end, narrow outer wide groove in forming between the two, weld the circumferential welded seam [12] at this groove place then, carry out back chipping after welding is finished, during back chipping root of weld is thoroughly removed together with baffle ring [3].
In concrete enforcement, stretch the rake angle annular element in described and take from the high-pressure bottle bottom (head) and be processed into the elongated portion integral body of the housing shell ring of material.Perhaps make, and defectives such as crackle, layering must not be arranged through nondestructive testing with steel plate, the forging of identical grade of steel.But this part is the best to take to be processed into the elongated portion integral body of the housing shell ring of material with the high-pressure bottle bottom (head).
The present invention two in stretch the annular upper uplifting angle [2] that the rake angle annular element stretches out by side direction annular element center in the main body [1] of the similar shape in longitudinal section and autonomous agent [1] upper end and the baffle ring [3] that stretches out along main body [1] inboard, lower end constitutes downwards.From interior longitudinal section of stretching the rake angle annular element, described main body [1] outside comprises two limits, and wherein outside top margin [4] be horizontal sides or low inside and high outside hypotenuse, top margin [4] with inboard high outside low hypotenuse be better selection; Another limit in the outside is the vertical straight flange in the outside [5].Main body [1] inboard comprises two limits, and promptly inboard horizontal sides [6] and medial shaft be to straight flange [7], and it is good that inboard horizontal sides [6] and medial shaft are to straight flange [7] connecting portion that circular-arc transition is connected to.For the ease of welding, the lower end of baffle ring [3] outer side edges upper end and the vertical straight flange in the outside [5] is linked to be low outer high hypotenuse in, a side of wide groove outside narrow in forming.
Thorough for back chipping in addition, the summit of stretching the annular upper uplifting angle [2] of rake angle annular element in of the present invention should be higher than the outside top margin [4] of main body [1].Above-mentioned annular upper uplifting angle [2] or baffle ring [3] are as a whole with main body [1], and perhaps described annular upper uplifting angle [2] or baffle ring [3] are fixed together with main body [1] after being processed into parts separately.
Stretch the baffle ring [3] of rake angle annular element in of the present invention, promptly near the medial shaft of main body [1] lower end to straight flange [7] parallel circulus of stretching out downwards, be the partial structurtes of using prior art.
Stretch on the rake angle annular element Material Selection interior, its material must be identical with the high-pressure bottle bottom (head).Can be with making with steel plate, the forging of the identical grade of steel of bottom (head), and defectives such as crackle, layering must not be arranged through nondestructive testing.But, stretch the rake angle annular element in described to be the best by taking to be processed into the elongated portion integral body of the housing shell ring of material with the high-pressure bottle bottom (head) from economical and practical, easy to process and guarantee the high quality welding effect.
Other ins and outs about high-pressure bottle bottom (head) and skirt welding method all belong to the technology that those of ordinary skills can both grasp, and have not just given unnecessary details here.
The welding method of a kind of high-pressure bottle bottom (head) of the present invention and skirt and special-purpose weldment thereof produce a desired effect through commercial scale at home is on probation.
In sum, the welding method of a kind of high-pressure bottle bottom (head) of the present invention and skirt and special-purpose weldment thereof, solved the hard nut to crack that is difficult to thorough back chipping in the high-pressure bottle welding procedure better, the defective and the deficiency that overcome or alleviate that manufacturing cost height, efficient that art methods brings are low, consumptive material is many, process are complicated or the like are for a brand-new approach has been opened up in the welding of high-pressure bottle bottom (head) and skirt.
Claims (9)
1. the welding method of high-pressure bottle bottom (head) and skirt comprises the steps:
Prefabricated one of A stretches the intermediate weldment that the rake angle annular element is connected with skirt [9] as bottom (head) [8] in identical with high-pressure bottle bottom (head) material, stretch the rake angle annular element in described, annular upper uplifting angle [2] that is stretched out by side direction annular element center in the main body [1] of the similar shape in longitudinal section and autonomous agent [1] upper end and the baffle ring [3] that stretches out downwards along main body [1] inboard, lower end constitute;
B is inverted stretching the rake angle annular element in above-mentioned, be enclosed within on the design attitude of high-pressure bottle bottom (head) [8] of inversion state, under inversion state, weld the circle of one between upper uplifting angle [2] and the bottom (head) [8] hoop lower angle weld seam [11], the whole upset of postwelding returns to carry out back chipping again, during back chipping root of weld is thoroughly removed together with upper uplifting angle [2] and with the bottom (head) superficial layer that root of weld merges mutually;
Weld the circle hoop upper corners weld seam [10] between main body [1] upper end and the bottom (head) [8] behind the C back chipping;
The D steel plate that is complementary with above-mentioned bottom (head) [8] material, the skirt [9] that prefabricated one section diameter and main body [1] adapt, skirt [9] is enclosed within on the baffle ring [3] that stretches out downwards main body [1] inboard, lower end, narrow outer wide groove in forming between the two, weld the circumferential welded seam [12] at this groove place then, postwelding carries out back chipping, during back chipping root of weld is thoroughly removed together with baffle ring [3].
2. welding method as claimed in claim 1 is characterized in that: stretch the rake angle annular element in described and take from high-pressure bottle bottom (head) [8] and make through machined with the elongated portion of the housing shell ring of material, or make with steel plate, the forging of identical grade of steel.
One kind be used for the welding of high-pressure bottle bottom (head) and skirt in stretch the rake angle annular element, it is characterized in that: stretch annular upper uplifting angle [2] that the rake angle annular element stretches out to the annular element center by the main body [1] of the similar shape in longitudinal section and autonomous agent [1] upper end and baffle ring [3] formation of stretching out in described downwards along main body [1] inboard, lower end.
4. stretch the rake angle annular element in as claimed in claim 3 for one kind, it is characterized in that: stretch in described on the longitudinal section of rake angle annular element, main body [1] outside comprises two limits, and wherein outside top margin [4] is horizontal sides or low inside and high outside hypotenuse, and another of outside limit is the vertical straight flange in the outside [5]; Main body [1] inboard comprises two limits, and promptly inboard horizontal sides [6] and medial shaft are to straight flange [7], and inboard horizontal sides [6] is that circular-arc transition is connected with medial shaft to straight flange [7] connecting portion; The lower end of the vertical straight flange in the upper end and the outside [5] of baffle ring [3] outer side edges is linked to be low outer high hypotenuse in.
5. stretch the rake angle annular element in as claimed in claim 3 for one kind, it is characterized in that: the summit of described annular upper uplifting angle [2] is higher than the outside top margin [4] of main body [1].
6. stretch the rake angle annular element in as claimed in claim 3 for one kind, it is characterized in that: described annular upper uplifting angle [2] or baffle ring [3] are as a whole with main body [1], and perhaps described annular upper uplifting angle [2] or baffle ring [3] are fixed together with main body [1] after being processed into parts separately.
7. stretch the rake angle annular element in as claimed in claim 3 for one kind, it is characterized in that: described baffle ring [3] near the medial shaft of main body [1] lower end to straight flange [7] parallel circulus of stretching out downwards.
8. stretch the rake angle annular element as one of claim 3～7 in described, it is characterized in that: the material of stretching the rake angle annular element in described is identical with high-pressure bottle bottom (head) [8].
9. stretch the rake angle annular element in as claimed in claim 8, it is characterized in that: stretch the rake angle annular element in described and take from high-pressure bottle bottom (head) [8] and make through machined, perhaps make with steel plate, the forging of identical grade of steel with the elongated portion of the housing shell ring of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00136871 CN1128036C (en) | 2000-12-29 | 2000-12-29 | Welding process and welded part of bottom and skirt support for high pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00136871 CN1128036C (en) | 2000-12-29 | 2000-12-29 | Welding process and welded part of bottom and skirt support for high pressure container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1360991A true CN1360991A (en) | 2002-07-31 |
| CN1128036C CN1128036C (en) | 2003-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00136871 Expired - Fee Related CN1128036C (en) | 2000-12-29 | 2000-12-29 | Welding process and welded part of bottom and skirt support for high pressure container |
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| CN (1) | CN1128036C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434222C (en) * | 2006-08-10 | 2008-11-19 | 上海人造板机器厂有限公司 | Welding process and apparatus for major diameter roller |
| CN102658924A (en) * | 2012-04-26 | 2012-09-12 | 苏州市金翔钛设备有限公司 | Skirt structure |
| CN102773619A (en) * | 2012-07-02 | 2012-11-14 | 林德工程（杭州）有限公司 | Vertical type assembly welding method for space division aluminum tower |
| CN102922096A (en) * | 2012-10-19 | 2013-02-13 | 林德工程（杭州）有限公司 | On-site assembly welding method for large aluminum tower |
| CN103128459A (en) * | 2013-03-06 | 2013-06-05 | 上海锅炉厂有限公司 | Method for controlling welding deformation between seal head and skirt transition section |
| CN103990913A (en) * | 2014-04-24 | 2014-08-20 | 中石化宁波工程有限公司 | Welding method for tower body and skirt seat of large-scale low-temperature tower |
| CN105416908A (en) * | 2015-12-15 | 2016-03-23 | 江阴中南重工有限公司 | Tower provided with skirt |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | Butt welding process for coke towers |
| CN108890166A (en) * | 2018-09-19 | 2018-11-27 | 张化机（苏州）重装有限公司 | The welding procedure of skirt and equipment lower head |
| CN109958877A (en) * | 2019-03-28 | 2019-07-02 | 哈尔滨锅炉厂有限责任公司 | Skirt and bottom (head) connection structure |
-
2000
- 2000-12-29 CN CN 00136871 patent/CN1128036C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434222C (en) * | 2006-08-10 | 2008-11-19 | 上海人造板机器厂有限公司 | Welding process and apparatus for major diameter roller |
| CN102658924A (en) * | 2012-04-26 | 2012-09-12 | 苏州市金翔钛设备有限公司 | Skirt structure |
| CN102773619A (en) * | 2012-07-02 | 2012-11-14 | 林德工程（杭州）有限公司 | Vertical type assembly welding method for space division aluminum tower |
| CN102773619B (en) * | 2012-07-02 | 2016-01-20 | 林德工程（杭州）有限公司 | The empty point vertical welding method of aluminium tower |
| CN102922096A (en) * | 2012-10-19 | 2013-02-13 | 林德工程（杭州）有限公司 | On-site assembly welding method for large aluminum tower |
| CN102922096B (en) * | 2012-10-19 | 2015-12-09 | 林德工程（杭州）有限公司 | Large size Aluminium tower field assembly welding method |
| CN103128459B (en) * | 2013-03-06 | 2015-04-08 | 上海锅炉厂有限公司 | Method for controlling welding deformation between seal head and skirt transition section |
| CN103128459A (en) * | 2013-03-06 | 2013-06-05 | 上海锅炉厂有限公司 | Method for controlling welding deformation between seal head and skirt transition section |
| CN103990913A (en) * | 2014-04-24 | 2014-08-20 | 中石化宁波工程有限公司 | Welding method for tower body and skirt seat of large-scale low-temperature tower |
| CN103990913B (en) * | 2014-04-24 | 2016-07-06 | 中石化宁波工程有限公司 | The tower body of a kind of large-scale low-temperature tower and the welding method of skirt |
| CN105416908A (en) * | 2015-12-15 | 2016-03-23 | 江阴中南重工有限公司 | Tower provided with skirt |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | Butt welding process for coke towers |
| CN107127433B (en) * | 2017-05-26 | 2019-03-26 | 南京工业大学 | Butt welding process for coke towers |
| CN108890166A (en) * | 2018-09-19 | 2018-11-27 | 张化机（苏州）重装有限公司 | The welding procedure of skirt and equipment lower head |
| CN109958877A (en) * | 2019-03-28 | 2019-07-02 | 哈尔滨锅炉厂有限责任公司 | Skirt and bottom (head) connection structure |
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| CN1128036C (en) | 2003-11-19 |
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