CN102626842B - Welding method for circular seam of mitre elbow pipeline casing - Google Patents
Welding method for circular seam of mitre elbow pipeline casing Download PDFInfo
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- CN102626842B CN102626842B CN201210132364.6A CN201210132364A CN102626842B CN 102626842 B CN102626842 B CN 102626842B CN 201210132364 A CN201210132364 A CN 201210132364A CN 102626842 B CN102626842 B CN 102626842B
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Abstract
The invention discloses a welding method for a circular seam of a mitre elbow pipeline casing, which includes the following steps: a. inclined planes of at least two unit pipelines which are processed are assembled and matched and connected through rib plates; b. an appearance structure of a corresponding mitre elbow pipeline selects a cylindrical tool, and the cylindrical tool is installed on a rotation tyre; c. the mitre elbow pipeline is installed on the cylindrical tool; d. the cylindrical tool and the mitre elbow pipeline are sampled and projected; e. angle and position of the mitre elbow pipeline are regulated according to the sampling and projecting results; and f. the rotation tyre is rotated at even speed so as to drive the cylindrical tool and the mitre elbow pipeline to rotate around an axial line of the cylindrical tool, and the circular seam of the mitre elbow pipeline is welded. The welding method for the circular seam of the mitre elbow pipeline casing can rapidly and accurately complete welding operation on the large circular seam of the mitre elbow pipeline casing of a gasification furnace, can guarantee that an angle value at the connecting position of the mitre elbow pipeline casing cannot be changed in a welding process, and improves welding quality of the circular seam.
Description
Technical field
The present invention relates to the production equipment such as chemical industry, oil and manufacture field, relate in particular to a kind of dried shrimp elbow conduit enclosure circular-seam welding method for gasification furnace large-diameter pipeline is welded.
Background technology
Gasification furnace for industrial circles such as oil, chemical industry is compared general gasification furnace structure complexity, bulky, and not only diameter large (general diameter is more than a meter) of its pipeline, and also very large (pipe thickness is more than 50mm conventionally) of the thickness of tube wall.Therefore the fabrication processing of manufacturing the gasification furnace of industrial circles such as being used for oil, chemical industry is also obviously different from general gasification furnace and manufactures.
The gas transmission bend loss that is used for the gasification furnace of the industrial circles such as oil, chemical industry has generally included dried shrimp elbow pipeline, dried shrimp elbow pipeline is made up of at least two unit pipe, the joint face of two unit pipe is inclined plane, adjacent two inclined plane groups are to coordinating the circumferential weld that forms dried shrimp elbow pipeline, by complete each the corresponding girth welding welding completing whole dried shrimp elbow pipeline; In addition, angle is processed the inclined plane of each unit pipe on request, so that adjacent inclined face group is to coordinating the angle value of rear junction to meet the bending angle requirement of dried shrimp elbow pipeline.The conventional welding method of welding for the circumferential weld of this Large Diameter Pipeline and the thicker dried shrimp elbow pipeline of tube wall is: two unit pipe are supported on a bracing frame, and make its inclined plane pairing form circumferential weld, utilize automatic welding machine to weld the circumferential weld face in dried shrimp swan neck road; In welding process, general bonding machine is fixed, and therefore needs the dried shrimp of hand rotation weldering simultaneously elbow pipeline, to complete, the whole lap welding of dried shrimp swan neck road circumferential weld face is connect.Notoriously, the circumferential weld face of dried shrimp elbow pipeline is ellipsoid instead of disc, therefore can not weld uniformly dried shrimp swan neck road by hand rotation dried shrimp elbow pipeline, can not ensure welding quality; In addition, in rotation process, easily change the angle value of two unit pipe shell junctions by hand rotation dried shrimp elbow pipeline, make the welding of whole dried shrimp elbow pipeline not meet designing requirement.Therefore be necessary to provide a kind of welding method of the improved dried shrimp elbow conduit enclosure girth welding to the gasification furnace for the industrial circle such as oil, chemical industry, to overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of dried shrimp elbow conduit enclosure circular-seam welding method, this welding method can complete the welding operation to the large dried shrimp swan neck of gasification furnace road shell circumferential weld rapidly and accurately, and the angle value that can ensure the junction of dried shrimp elbow conduit enclosure in welding process do not change, improve girth welding quality.
For achieving the above object, the invention provides a kind of dried shrimp elbow conduit enclosure circular-seam welding method, the method comprise the steps: a. by the inclined plane group of at least two unit pipe that completes processing to coordinating and using link of boards, to form dried shrimp elbow pipeline, and interconnective two inclined planes form the circumferential weld face of dried shrimp elbow pipeline; B. the contour structures of corresponding dried shrimp elbow pipeline is selected cylindrical shell frock, and described cylindrical shell frock is installed on positioner; C. dried shrimp elbow pipeline is installed in described cylindrical shell frock; D. described cylindrical shell frock and dried shrimp elbow pipeline are carried out to setting-out and projection; E. according to angle and the position of setting-out and projection result adjusting dried shrimp elbow pipeline; F. uniform rotation positioner drives described cylindrical shell frock and dried shrimp elbow pipeline to rotate around the axial line of cylindrical shell frock, and welds the circumferential weld face of dried shrimp elbow pipeline.
Preferably, described step b is specially, and selects cylindrical shell frock according to the outer electrical path length of dried shrimp elbow pipeline and pipe thickness size.
Preferably, in described steps d, use total powerstation to carry out on the ground setting-out and projection to described cylindrical shell frock and dried shrimp elbow pipeline.
Preferably, in described step e, regulate dried shrimp elbow pipeline, make the circumferential weld face of dried shrimp elbow pipeline perpendicular to cylindrical shell frock, and the axle center of circumferential weld face place ellipsoid of dried shrimp elbow pipeline and the axial line of cylindrical shell frock are on same straight line.
Preferably, regulated after dried shrimp elbow pipeline, the one end that utilizes gusset that described dried shrimp swan neck road is had to vertical plane is fixed in described cylindrical shell frock.
beneficial effect of the present invention:dried shrimp elbow conduit enclosure circular-seam welding method of the present invention, by described cylindrical shell frock and dried shrimp elbow pipeline are carried out to setting-out and projection, can regulate on request installation site and angle between dried shrimp elbow pipeline and cylindrical shell frock, angle value with the junction of guaranteeing dried shrimp elbow conduit enclosure remains the angle value of setting, thereby has ensured that soldering angle meets designing requirement; Drive described cylindrical shell frock and dried shrimp elbow pipeline to do Concentric rotation around the axial line of cylindrical shell frock by rotating described positioner in addition, can weld equably the circumferential weld face in dried shrimp swan neck road, guarantee evenly carrying out of welding operation, improved the quality of girth welding.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing:
Fig. 1 is the structural representation of dried shrimp elbow pipeline each several part of the present invention and cylindrical shell frock.
Fig. 2 is the structural representation of a circumferential weld of welding dried shrimp elbow pipeline of the present invention.
Fig. 3 is the structural representation of another circumferential weld of welding dried shrimp elbow pipeline of the present invention.
Fig. 4 is the flow chart of dried shrimp elbow conduit enclosure circular-seam welding method of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Dried shrimp elbow conduit enclosure circular-seam welding method of the present invention, is mainly used in the welding manufacture of the dried shrimp elbow pipeline of the thick tube wall of major diameter of the gasification furnace to the industrial circle such as oil, chemical industry.Please refer to Fig. 1 to Fig. 3, the gas transmission bend loss of gasification furnace comprises direct tube section 100 and dried shrimp elbow pipeline 200; Dried shrimp elbow pipeline 200 is made up of multiple unit pipe 210, and unit pipe 210 is three conventionally, also can select by the physical length of required dried shrimp elbow pipeline 200 unit pipe 210 of respective numbers; Apparently, dried shrimp elbow pipeline 200 entirety are bending, therefore the contact-making surface of interconnective unit pipe 210 is required to be inclined plane 211, as shown in Figure 1, the unit pipe 210 that is positioned at dried shrimp elbow pipeline 200 two ends has respectively inclined plane 211 and vertical plane 212, be positioned at the unit pipe 210 at dried shrimp elbow pipeline 200 middle parts, because its two ends all need to contact with other unit pipe 210, two ends are inclined plane 211, adjacent cells pipeline 210 is rising by link of boards, and adjacent inclined plane 211 complements each other to form the circumferential weld 220 of dried shrimp elbow pipeline 200.Direct tube section 100 is fixedly mounted on one end of cylindrical shell frock 300, and the axial line of the axial line of direct tube section 100 and cylindrical shell frock 300 repeats, and the size of direct tube section 100 equals the size of unit pipe 210 vertical planes 212; Dried shrimp elbow pipeline 200 is fixedly installed in the other end of cylindrical shell frock 300 by gusset; And cylindrical shell frock 300 is arranged on some positioners 310, in the time that dried shrimp swan neck road 200 is welded, drive cylindrical shell frock 300 and dried shrimp elbow pipeline 200 to rotate by the rotation of positioner 310, to complete the welding of the circumferential weld 220 to dried shrimp swan neck road 200; Meanwhile, in the time that the unit pipe 210 of dried shrimp elbow pipeline 200 is more, also need in cylindrical shell frock 300, increase balancing weight 320, with the weight at balance cylindrical shell frock 300 two ends.Wherein, the angle of adjacent cells pipeline 210 junctions of dried shrimp elbow pipeline 200, by the inclined plane 211 of machining cell pipeline 210 in advance determining, the angle difference of dried shrimp elbow pipeline 200, and the angle of inclination on the inclined plane 211 of machining cell pipeline 210 is also different.Concrete welding process is please again in conjunction with being described with reference to figure 4.
Fig. 4 has shown the key step process of dried shrimp elbow conduit enclosure circular-seam welding method of the present invention.In conjunction with reference to figure 4, described method comprises the steps:
Step S101, by 211 groups, the inclined plane of at least two unit pipe 210 that completes processing to coordinating and using link of boards; In this step, by 211 groups, the inclined plane of at least two pre-processed unit pipe 210 to connecting, to form dried shrimp elbow pipeline 200, simultaneously, form the circumferential weld face 220 of dried shrimp elbow pipeline 200 at 211 places, two inclined planes that are in contact with one another, and this circumferential weld face 220 is ellipsoid; In an embodiment of the present invention, unit pipe 210 is set to three, also makes the two ends of the unit pipe 210 in the middle of being positioned at be inclined plane 211.
Step S102, the contour structures of corresponding dried shrimp elbow pipeline 200 is selected cylindrical shell frock 300, and described cylindrical shell frock 300 is installed on positioner 310; In this step, there is particularly outer electrical path length and the pipe thickness size selection cylindrical shell frock 300 of vertical plane 212 one end according to dried shrimp elbow pipeline 200, so can easily direct tube section 100 be firmly installed in described cylindrical shell frock 300; In addition, cylindrical shell frock 300 is installed on positioner 310, to drive cylindrical shell frock 300 to rotate by positioner 310, and drives dried shrimp elbow pipeline 200 to rotate, thereby can complete the whole welding to circumferential weld face.
Step S103, is installed on dried shrimp elbow pipeline 200 in described cylindrical shell frock 300; In this step, described cylindrical shell frock 300 not only can support bearing dried shrimp elbow pipeline 200, to facilitate, dried shrimp swan neck road 200 is welded, simultaneously, also can drive dried shrimp elbow pipeline 200 to coaxially rotate with it by positioner 310, and complete the welding to circumferential weld face 220.
Step S104, carries out setting-out and projection to cylindrical shell frock 300 and dried shrimp elbow pipeline 200; In this step, utilize total powerstation to carry out on the ground setting-out and projection to the cylindrical shell frock 300 being installed on positioner 310 with dried shrimp elbow pipeline 200, thereby determine the position in the axle center of the axial line of described cylindrical shell frock 300 and the circumferential weld face 220 place ellipsoids of dried shrimp elbow pipeline 200, thereby can be subsequent step and provide normative reference to the position adjustments in dried shrimp swan neck road 200, meet designing requirement with the angle position that ensures dried shrimp elbow pipeline 200.
Step S105, according to angle and the position of setting-out and projection result adjusting dried shrimp elbow pipeline 200, in this step by setting-out and the projection result of total powerstation in step S104, angle and the position of corresponding adjusting dried shrimp elbow pipeline 200, see Fig. 2 and Fig. 3 with the circumferential weld face 220 that makes dried shrimp elbow pipeline 200 perpendicular to cylindrical shell frock 300(), and the axle center of circumferential weld face 220 place ellipses of dried shrimp elbow pipeline 200 and the axial line of cylindrical shell frock 300 are on same straight line, thereby make dried shrimp elbow pipeline 200 and cylindrical shell frock 300 can under the driving of positioner 310, do continuously concentric rotation, to coordinate Welding machine of circumferential weld to complete the welding operation to whole circumferential weld face 220, wherein, concrete adjustment process is: after regulating rotation dried shrimp elbow pipeline 200 once, utilize total powerstation again to carry out setting-out and projection, to determine angle and the position of dried shrimp elbow pipeline 200 relatively described cylindrical shell frocks 300, until the axle center of circumferential weld face 220 place ellipsoids of dried shrimp elbow pipeline 200 and the axial line of cylindrical shell frock 300 are on same straight line, rotate dried shrimp elbow pipeline 200 and stop adjusting, and by gusset, dried shrimp elbow pipeline 200 is fixed in described cylindrical shell frock 300 on this angle position, to prevent the variation of relative cylindrical shell frock 300 occurrence positions of dried shrimp elbow pipeline 200 or angle.
Step S106, uniform rotation positioner 310 drives described cylindrical shell frock 300 and 200 rotations of the axial line around cylindrical shell frock 300 of dried shrimp elbow pipeline, and welds the circumferential weld face 220 of dried shrimp elbow pipeline 200; In this step, by cylindrical shell frock 300 described in the driving uniform rotation of positioner 310, make described cylindrical shell frock 300 drive dried shrimp elbow pipeline 200 therewith to make Concentric rotation around its axial line, thereby make dried shrimp elbow pipeline 200 to do uniform rotation together with cylindrical shell frock 300, that is to say in welding process, can carry out girth welding to the circumferential weld face 220 in dried shrimp swan neck road 200 fast and equably, ensure the uniformity of welding, improve quality and the speed of girth welding.
From the above, dried shrimp elbow conduit enclosure circular-seam welding method of the present invention, by described cylindrical shell frock 300 is carried out to setting-out and projection with dried shrimp elbow pipeline 200, can regulate on request installation site and angle between dried shrimp elbow pipeline 200 and cylindrical shell frock 300, and after the angle position of described dried shrimp elbow pipeline 200 has regulated, again described dried shrimp elbow pipeline 200 is fixed in described cylindrical shell frock 300, guarantee that the angle value of the junction of dried shrimp elbow pipeline 200 shells remains the angle value of setting, can not change, the angle that has ensured girth welding meets designing requirement, at the uniform velocity drive described cylindrical shell frock 300 to rotate and drive dried shrimp elbow pipeline 200 to rotate by positioner 310 in addition, can make dried shrimp elbow pipeline 200 also rotate evenly, thereby can carry out equably girth welding to the circumferential weld face 220 in dried shrimp swan neck road 200, guarantee evenly carrying out of welding operation, improved the quality of girth welding.
Disclosed arbitrary feature in this description (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Claims (2)
1. a dried shrimp elbow conduit enclosure circular-seam welding method, is characterized in that, comprises the steps:
A. by the inclined plane group of at least two unit pipe that completes processing to coordinating and using link of boards, to form dried shrimp elbow pipeline, dried shrimp elbow pipeline entirety is bending, the unit pipe that is positioned at dried shrimp elbow pipe ends has respectively inclined plane and vertical plane, the unit pipe two ends that are positioned at dried shrimp elbow pipeline middle part are inclined plane, and interconnective two inclined planes form the circumferential weld face of dried shrimp elbow pipeline;
B. the contour structures of corresponding dried shrimp elbow pipeline is selected cylindrical shell frock, and described cylindrical shell frock is installed on positioner;
C. dried shrimp elbow pipeline is installed in described cylindrical shell frock; The gas transmission bend loss of gasification furnace comprises direct tube section and dried shrimp elbow pipeline, and direct tube section is fixedly mounted on one end of cylindrical shell frock, and dried shrimp elbow pipeline is fixedly installed in the other end of cylindrical shell frock by gusset; Drive cylindrical shell frock and dried shrimp elbow pipeline to rotate by the rotation of positioner, to complete the welding of the circumferential weld to dried shrimp swan neck road;
D. use total powerstation to carry out on the ground setting-out and projection to described cylindrical shell frock and dried shrimp elbow pipeline;
E. according to angle and the position of setting-out and projection result adjusting dried shrimp elbow pipeline, regulate dried shrimp elbow pipeline, make the circumferential weld face of dried shrimp elbow pipeline perpendicular to cylindrical shell frock, and the axle center of circumferential weld face place ellipsoid of dried shrimp elbow pipeline and the axial line of cylindrical shell frock are on same straight line, regulated after dried shrimp elbow pipeline, the one end that utilizes gusset that described dried shrimp swan neck road is had to vertical plane is fixed in described cylindrical shell frock;
F. uniform rotation positioner drives described cylindrical shell frock and dried shrimp elbow pipeline to rotate around the axial line of cylindrical shell frock, and welds the circumferential weld face of dried shrimp elbow pipeline.
2. dried shrimp elbow conduit enclosure circular-seam welding method as claimed in claim 1, is characterized in that, described step b is specially, and selects cylindrical shell frock according to the outer electrical path length of dried shrimp elbow pipeline and pipe thickness size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132364.6A CN102626842B (en) | 2012-05-02 | 2012-05-02 | Welding method for circular seam of mitre elbow pipeline casing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210132364.6A CN102626842B (en) | 2012-05-02 | 2012-05-02 | Welding method for circular seam of mitre elbow pipeline casing |
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| CN102626842A CN102626842A (en) | 2012-08-08 |
| CN102626842B true CN102626842B (en) | 2014-07-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692171A (en) * | 2014-01-10 | 2014-04-02 | 点夺机电工程江苏有限公司 | Making method of shrimp elbow |
| CN104475942B (en) * | 2014-12-15 | 2016-08-24 | 济南重工股份有限公司 | A kind of Vertical Mill separator lower shell welding procedure |
| CN106041430A (en) * | 2016-07-05 | 2016-10-26 | 重庆铁马工业集团有限公司 | Auxiliary molding method for shrimp bend of panel |
| CN109262205A (en) * | 2018-09-14 | 2019-01-25 | 哈尔滨锅炉厂有限责任公司 | Monocline roll system adapter tube manufacturing method |
| CN109014644A (en) * | 2018-09-30 | 2018-12-18 | 中船黄埔文冲船舶有限公司 | A kind of runner elbow-making method |
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| DE2805023A1 (en) * | 1978-02-06 | 1979-08-09 | Welsch Karl Adolf App | Universal jig for welding pipes, esp. to mfr. pipe elbows - where circular butt joints can be rotated past welding burner |
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| CN101642841A (en) * | 2009-08-25 | 2010-02-10 | 江苏沪宁钢机股份有限公司 | Manufacturing method of double-twist box-shaped bent member |
| CN101823177A (en) * | 2010-04-30 | 2010-09-08 | 重庆钢铁(集团)有限责任公司 | Submerged-arc welding process of large-size cylinder body |
| CN102059461A (en) * | 2010-12-15 | 2011-05-18 | 广州中船黄埔造船有限公司 | High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006520A (en) * | 1975-01-20 | 1977-02-08 | Sulzer Brothers Limited | Machine for connecting workpieces, especially pipe bend segments or the like |
| DE2805023A1 (en) * | 1978-02-06 | 1979-08-09 | Welsch Karl Adolf App | Universal jig for welding pipes, esp. to mfr. pipe elbows - where circular butt joints can be rotated past welding burner |
| CN201086181Y (en) * | 2007-10-30 | 2008-07-16 | 杨喜春 | Tire rotating device for welding large-scale pipe fitting connector bend |
| CN101642841A (en) * | 2009-08-25 | 2010-02-10 | 江苏沪宁钢机股份有限公司 | Manufacturing method of double-twist box-shaped bent member |
| CN101823177A (en) * | 2010-04-30 | 2010-09-08 | 重庆钢铁(集团)有限责任公司 | Submerged-arc welding process of large-size cylinder body |
| CN102059461A (en) * | 2010-12-15 | 2011-05-18 | 广州中船黄埔造船有限公司 | High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship |
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| CN102626842A (en) | 2012-08-08 |
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