CN103286466A - Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method - Google Patents
Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method Download PDFInfo
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- CN103286466A CN103286466A CN2013102291736A CN201310229173A CN103286466A CN 103286466 A CN103286466 A CN 103286466A CN 2013102291736 A CN2013102291736 A CN 2013102291736A CN 201310229173 A CN201310229173 A CN 201310229173A CN 103286466 A CN103286466 A CN 103286466A
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Abstract
The invention discloses a multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method. The method includes the following steps: machining a nozzle mounting flange, selecting a gasifier assembly cylinder section where the nozzle mounting flange will be installed, installing an anti-deformation tool, machining a tube hole, where the nozzle mounting flange will be installed, in the assembly cylinder section, enabling the nozzle mounting flange to be matched with the assembly cylinder section, forming a fan-shaped groove with a big outside and a small inside between the nozzle mounting flange and the assembly cylinder section, enabling the inner bottom end of the fan-shaped groove to be in a semi-circular arc shape, enabling a location straight section to be arranged between the bottom and the inner wall of the assembly cylinder section, enabling the location straight section to have a 0.3-0.5mm fit clearance during assembling, adopting a 7-shaped connecting piece to connect and fix the nozzle mounting flange and the assembly cylinder section, detecting positional accuracy of four nozzles of the nozzle mounting flange, and welding the groove. By means of the mounting flange installing and welding method, the finally-obtained nozzle mounting flange is high in accuracy, good in quality and good in anti-deformation effect.
Description
Technical field
The present invention relates to a kind of flange assembling and welding process, relate in particular to a kind of multiinjector opposed type gasifier nozzle mounting flange assembling and welding process, belong to welding technology field.
Background technology
The required precision of burner mounting flange is very high in the multiinjector opposed type structure gasification furnace, common bevel for welding form, anti-deformation measure and means, welding method etc. commonly used all are difficult to guarantee above-mentioned flange assembling in the industry at present, and, be difficult to satisfy the corresponding requirements of flange precision after welding.
At present, in the product of homogeneous structure, the pore of above-mentioned flange correspondence normally adopts manual line to determine the size in position and hole, adopts gas cutting+polishing or machine-tooled method processing pore.In this mode, because the assembling of flange does not have effective location measure, and only be the welding deformation that the common and easy anti-deformation tool of employing prevents flange, so, the flange of the weldering of adorning is owing to the factor of assembly precision and welding deformation, and the deviation when finally forming usually is all bigger.
Therefore, for the high-precision requirement of burner mounting flange in the multiinjector structure gasification furnace, above-mentioned assembling and welding method and the conventional means of taking and measure all are difficult to satisfy the requirement of flange assembly precision and welding quality.
Summary of the invention
The objective of the invention is to: the invention provides a kind of multiinjector opposed type gasifier nozzle mounting flange assembling and welding process, design feature in conjunction with product, select unique groove type for use, start with from pore machining accuracy, assembly precision, welding deformation control, manufacturing process, the detection means aspect of burner mounting flange correspondence, solve that the flange assembly precision is not easy to be guaranteed, the problem of welding process easy deformation, thereby can effectively solve above-mentioned problems of the prior art.
The object of the invention realizes by following technical proposals: a kind of multiinjector opposed type gasifier nozzle mounting flange assembling and welding process comprises following dress weldering step: comprise following dress weldering step:
The first step, processing burner mounting flange stays 3-6mm secondary allowance for finish at the inside and outside circle of burner mounting flange, stays 5-15mm secondary allowance for finish at the end face of burner mounting flange;
In second step, the gasification furnace of choosing burner mounting flange to be installed assembles shell ring, is assembling the pre-flange rigging position line of drawing on the shell ring, and is adorning anti-deformation tool in the relative both sides of distance installation burner mounting flange place position of mounting hole 80-200mm;
In the 3rd step, the pore of burner mounting flange to be installed on the process and assemble shell ring: at first, in the flat cylindrical shell both ends of the surface of vertical lathe processing, 5-15mm secondary operations surplus is respectively stayed at two ends; Then, determine the position of four pores on same plane, the circumference at centering on the boring and milling machine and calibration; At last, shell ring at dress burner mounting flange processes the assembling pore, the burner mounting flange is cooperated with the assembling shell ring, between forms the fan-shaped groove that outer imperial palace is little, the interior bottom of described fan-shaped groove is semicircular arc, the bottom is provided with the location straight section between assembling shell ring inwall, the location straight section has the fit clearance of 0.3-0.5mm during assembling;
In the 4th step, adopt " ┓ " the shape connector is connected and fixed burner mounting flange and assembling shell ring, and employing space laser measuring system detects the positional precision of four burners of burner mounting flange;
The 5th step, bevel for welding.
As preferably, behind the 5th step bevel for welding, heat treatment eliminates stress after burner mounting flange and the shell ring welding; Then in digital-control boring-milling machine processing burner mounting flange inside and outside circle and end surplus.
As preferably, the welding process of burner mounting flange and assembling shell ring groove is: outer side weld manual welding bottoming, and remove connector behind manual welding to 5～10mm height, and adopting saddle weldering or manual welding automatically, the welding process symmetry is carried out; Be specially successively four flanges are labeled as A flange, B flange, C flange and D flange along circumferential order, earlier the outer side weld of A flange is welded to fan-shaped groove depth 1/2 after namely transfer the welding C flange of symmetry with it to, with the outer side weld of C flange be welded to fan-shaped groove depth 1/2 after namely transfer welding adjacent B flange with it to, the outer side weld of B flange be welded to fan-shaped groove depth 1/2 after namely transfer the welding D flange of symmetry with it to, the D flange is disposable full with outer side weld weldering, and is last successively that the outside residue weld seam weldering of B flange, A flange and C flange is full again; After outer side weld has welded inwall location straight section is carried out back chipping and remove, and polish bevel for welding, groove face is carried out the detection of 100% magnetic or infiltration detection, guarantee not have by the welding sequence identical with outer side weld the inwall weld seam to be carried out manual welding behind the crackle.
As preferably, process and assemble shell ring on numerical control vertical lathe, be benchmark with both ends of the surface, measurement size in conjunction with the burner mounting flange, behind centering on the digital-control boring-milling machine each processing such as burner mounting flange inside and outside circle, end face, sealing surface and screw thread is put in place, burner mounting flange and cylindrical shell machine and detect qualified back and assemble with all the other cylindrical shells.
As preferably, described anti-deformation tool comprises that the anti-deformation of being located in the assembling shell ring supports ring flat-plate, and the ring flat-plate cylindrical welds with shell ring, and No. two lacing wires are established in a lacing wire of establishing vertical bar shaped in the ring flat-plate inboard between ring flat-plate side and cylinder inboard wall.
As preferably, in second step, the method of choosing the gasification furnace assembling shell ring of burner mounting flange to be installed is: the shell ring that is used for installing the burner mounting flange on the intercepting gasification furnace housing stack shell, intercepted length is 2000mm～3500mm, treat burner mounting flange and this shell ring the assembling, process and detect qualified after, assemble with all the other cylindrical shells again.
As preferably, the length L=20-50mm of described location straight section.
As preferably, burner mounting flange and housing location straight section be monolateral, and to stay the size of fit-up gap be 0.3-0.5mm.
As preferably, the radius R=5-15mm of the bottom semicircular arc of described fan-shaped groove, fan-shaped angle a=8-20 degree.
Compared with prior art, beneficial effect of the present invention is embodied in: adopt the assembling and welding process of mounting flange of the present invention, the precision height, the quality that finally obtain the burner mounting flange are good, be embodied in following some:
1). the bevel for welding form structure of burner mounting flange and assembling shell ring is reasonable, practical, and assembling is simple, the location is accurate, anti-deformation is effective;
2). anti-deformation tool is simple in structure to be suitable for, and anti-deformation is effective, and frock also can be repeatedly used, cost-saved;
3). burner mounting flange and corresponding assembling shell ring adopt high-precision numerical control device machine-shaping, dimensional accuracy height;
4). rational welding sequence and welding method, reduced the distortion that welding causes as much as possible.
Description of drawings
Structural representation when Fig. 1 is burner mounting flange of the present invention and the assembling of gasification furnace assembling shell ring;
Fig. 2 is the I place enlarged diagram among Fig. 1;
Fig. 3 is the parameter sign picture of Fig. 2;
The schematic diagram of institute's anti-deformation of using support in Fig. 4 burner mounting flange dress weldering process;
Fig. 5 burner mounting flange and the phase I that the cylindrical shell welding process is installed;
Fig. 6 burner mounting flange and the second stage that the cylindrical shell welding process is installed;
Fig. 7 burner mounting flange and the phase III that the cylindrical shell welding process is installed;
Fig. 8 burner mounting flange and the quadravalence section that the cylindrical shell welding process is installed.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Disclosed all features in this specification, or the step in disclosed all methods or the process, except the speciality and/or step of mutual repulsion, all can make up by any way, unless special narration all can be replaced by other equivalences or the alternative features with similar purpose, namely, unless special narration, an embodiment in a series of equivalences of each feature or the similar characteristics.
A kind of multiinjector opposed type gasifier nozzle mounting flange assembling and welding process comprises following dress weldering step:
The first step, processing burner mounting flange respectively stays 5mm secondary allowance for finish at the inside and outside circle of burner mounting flange, stays 10mm secondary allowance for finish at the end face of burner mounting flange.
In second step, the gasification furnace of choosing burner mounting flange to be installed assembles shell ring, and its choosing method is: one section stack shell that the burner mounting flange is installed on the gasification furnace housing stack shell is intercepted out, and length is 2300mm.The selection principle of shell ring is according to the length of gasification furnace housing, the deployment scenarios of adapter and the physical length that roll bending ability situation is determined required shell ring, usually choosing length is that 2000mm～3500mm scope is comparatively suitable, treats the assembling of burner mounting flange and this shell ring, processes and detect qualified then the assembling with all the other cylindrical shells.
The pre-flange rigging position line of drawing on the assembling shell ring, and at the relative both sides dress anti-deformation tool apart from installation burner mounting flange place position of mounting hole 80-200mm; As shown in Figure 4, described anti-deformation tool comprises that the anti-deformation of being located in the assembling shell ring 1 supports ring flat-plate 3, ring flat-plate 3 cylindricals and shell ring welding, and No. two lacing wires 8 are established in a lacing wire 4 of establishing vertical bar shaped in ring flat-plate 3 inboards between ring flat-plate side and cylinder inboard wall.Ring flat-plate is δ 60～80mm, width 500mm, i.e. the doughnut-shaped steel plate of R1-R2=500mm, and the ring flat-plate cylindrical is appropriate with the weldering of assembling shell ring, and endoporus and both sides are all adopted lacing wire to connect and are welded.
In the 3rd step, as Fig. 1, Fig. 2, shown in Figure 3, the pore of burner mounting flange to be installed on the process and assemble shell ring 1: at first, in the flat cylindrical shell both ends of the surface of vertical lathe processing, 15mm secondary operations surplus is respectively stayed at two ends; Then, determine the position of four pores on same plane, the circumference at centering on the boring and milling machine and calibration; At last, process the assembling pore at the shell ring of dress burner mounting flange, burner mounting flange 2 can be cooperated with assembling shell ring 1 and leave fit-up gap 5, the size of fit-up gap is 0.3-0.5mm; The little fan-shaped groove 6 of imperial palace outside between burner mounting flange 2 and assembling shell ring 1, forming one, the interior bottom of described fan-shaped groove 6 is semicircular arc, the radius R=5-15mm of described semicircular arc, fan-shaped angle a=8-20 degree; The bottom is provided with location straight section 7 between assembling shell ring 1 inwall; Length L=the 20-50mm of described location straight section 7.
In the 4th step, adopt " ┓ " the shape connector is connected and fixed burner mounting flange and assembling shell ring, and employing space laser measuring system detects the positional precision of four burners of burner mounting flange.
The 5th step, bevel for welding; The welding process of burner mounting flange and assembling shell ring is: outer side weld manual welding bottoming, and remove connector behind manual welding to 5～10mm height, then, adopt saddle weldering or manual welding automatically, the welding process symmetry is carried out, be specially successively four flange circumferential order are labeled as the A flange, the B flange, C flange and D flange, earlier the outer side weld of A flange is welded to fan-shaped groove depth 1/2 after namely transfer the welding C flange of symmetry with it to, with the outer side weld of C flange be welded to fan-shaped groove depth 1/2 after namely transfer welding adjacent B flange with it to, the outer side weld of B flange be welded to fan-shaped groove depth 1/2 after namely transfer the welding D flange of symmetry with it to, the D flange is disposable full with outer side weld weldering, at last more successively with the B flange, the outside residue weld seam weldering of A flange and C flange is full; After outer side weld has welded inwall location straight section is carried out back chipping and remove, and polish bevel for welding, groove face is carried out the detection of 100% magnetic or infiltration detection, guarantee not have by the welding sequence identical with outer side weld the inwall weld seam to be carried out manual welding behind the crackle.Weld seam all weldering is appropriate and carry out the integral body heat treatment that eliminates stress after Non-Destructive Testing is qualified, adopts the space laser measuring system to detect the distortion situation of four burners after treating the product cooling and removing anti-deformation tool.
In the 6th step, heat treatment eliminates stress after burner mounting flange and the shell ring welding.
The 7th step is in digital-control boring-milling machine processing burner mounting flange inside and outside circle and end surplus.
Process and assemble shell ring on numerical control vertical lathe, be benchmark with both ends of the surface, measurement size in conjunction with the burner mounting flange, by the drawing dimensional requirement each processing such as burner mounting flange inside and outside circle, end face, sealing surface and screw thread is put in place behind centering on the digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect qualified back and assemble with all the other cylindrical shells.
The selected product of this example is multiinjector opposed type coal slurry gasifier, and its housing and burner mounting flange specification are as follows:
Gasification furnace: housing internal diameter φ 3600mm, wall thickness 112mm is about 25000mm;
The burner mounting flange: internal diameter φ 560mm, maximum ga(u)ge are 154 mm, flange height 683.8mm;
Flange and housing assembling place external diameter are φ 1020mm.
The assembly precision of burner mounting flange requires as follows:
1. four burner mounting flanges require to be at grade 90 ° uniform, the plane deviation is not more than 2mm;
2. per two relative burner mounting flange coaxiality deviations are not more than 3mm;
3. adorn the flange face of postwelding and the perpendicularity deviation of its axis and be not more than 1mm;
4. the perpendicularity deviation of flange axis and housing axis is not more than 2mm (being converted into behind the angle is 2 ' 51 ");
5. the perpendicularity deviation between the two pairs of burner axis is not more than 2mm (being converted into behind the angle is 2 ' 51 ");
Concrete implementation step and checking result are as follows:
1) first step: processing burner mounting flange.
The monolateral 6mm secondary allowance for finish that respectively stays of burner mounting flange inside and outside circle, 12mm secondary allowance for finish is stayed in the right side.
2) second step: the cylindrical shell of processing and the pairing of burner mounting flange.
Choose the best joint cylindrical shell L=2300mm of moulding, assembling shell ring as the burner mounting flange, behind the appropriate anti-deformation tool of zone dress weldering about the 150mm of pore both sides that the cylindrical shell two ends are concordant in numerical control vertical lathe processing, 10mm secondary operations surplus is respectively stayed at two ends, afterwards centering and go out the assembling pore of 4 burner mounting flanges by divided edge structure and dimensioned on digital-control boring-milling machine.
3) the 3rd step: assembling burner mounting flange and cylindrical shell.
Burner mounting flange assembling back adopts ┓ shape connector to be connected and fixed, and adopts the space laser measuring system to detect the positional precision of four burners, welds connector after determining to meet the demands.
4) the 4th step: welding burner mounting flange and cylindrical shell.
4 burner mounting flanges are labeled as A flange-B flange-C flange-D flange respectively, weld in the following order:
1. namely transfer the symmetrical C flange of welding to after the outer side weld of A flange being welded to the 40mm height;
2. the outer side weld of C flange namely transfers the adjacent B flange of welding to after being welded to the 40mm height;
3. the outer side weld of B flange namely transfers the symmetrical D flange of welding to after being welded to the 40mm height, remove connector after Han Jie D flange outside weld is welded to the 40mm height at last, adopting saddle to weld continuation automatically expires the outside weld weldering, as shown in Figure 5, Fig. 5 is burner mounting flange and the phase I that the cylindrical shell welding process is installed;
4. remove the ┓ shape connector of all the other 3 flanges, the order of pressing B flange-C flange-A flange successively adopts saddle, and weldering is full with the outer side weld weldering of four flanges automatically, and as shown in Figure 6, Fig. 6 is burner mounting flange and the second stage that the cylindrical shell welding process is installed;
5. will polish groove behind the inboard 40mm straight section back chipping, as shown in Figure 7, Fig. 7 is burner mounting flange and the phase III that the cylindrical shell welding process is installed.And groove face carried out 100% magnetic detects or infiltration detects, guarantee not have after the defectives such as crackle order and the weld joint on inner side of the appropriate burner mounting flange of method manual welding and housing and the 40mm straight section positioning area of former reservation by above-mentioned outer side weld, as shown in Figure 8, Fig. 8 is burner mounting flange and the quadravalence section that the cylindrical shell welding process is installed.
5) the 5th step: heat treatment eliminates stress after burner mounting flange and the shell ring welding.
The weld seam of burner mounting flange and cylindrical shell carries out the integral body heat treatment that eliminates stress after Non-Destructive Testing is qualified.
6) the 6th step: the positional precision that detects each burner mounting flange.
Burner mounting flange assembly cooling back is removed anti-deformation tool and is adopted the space laser measuring system to detect the positional precision of four burner mounting flanges.
1. the deviations from planarity on plane, four burner mounting flange axis places is 0.6173 mm;
2. the burner mounting flange coaxiality deviation of two symmetries is as follows respectively: A flange-C flange is: 0.8309mm; B flange-D flange is: 1.2855mm;
3. because the burner mounting flange is to adopt digital-control boring-milling machine processing, so the angle of flange face and its axis is 90 °, and perpendicularity is very good, deviation do not occur;
4. the angle of flange axis plane and housing axis is 89 ° 55 ' 43 ", deviation is 4 ' 17 ";
5. the angle between the two pairs of burner axis is 90 ° 0 ' 35 ", deviation is 0 ' 35 ";
From measurement result, except the perpendicularity of flange axis and housing axis is overproof, measurement result deviation 4 ' 17 ", greater than desired 2 ' 51 " and, all the other precision of burner mounting flange all meet the demands; And the allowance of the monolateral 6mm of flange inside and outside circle that reserves and end face 12mm is enough to guarantee that the perpendicularity of its axis and housing axis meets the demands after the final fine finishining of flange.
7) the 7th step: the final fine finishining of burner mounting flange.
On numerical control vertical lathe, the cylindrical shell two ends are processed by desired size and groove type, be benchmark with both ends of the surface, centering and by the drawing dimensional requirement processing of each one such as burner mounting flange inside and outside circle, end face and sealing surface, screw thread is put in place in conjunction with above-mentioned measured data on digital-control boring-milling machine, burner mounting flange and cylindrical shell machine and detect can be assembled with other cylindrical shells of gasification furnace after qualified.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process is characterized in that: comprise following dress weldering step:
The first step, processing burner mounting flange respectively stays 3-6mm secondary allowance for finish at the inside and outside circle of burner mounting flange, stays 5-15mm secondary allowance for finish at the end face of burner mounting flange;
In second step, the gasification furnace of choosing burner mounting flange to be installed assembles shell ring, is assembling the pre-flange rigging position line of drawing on the shell ring, and is adorning anti-deformation tool in the relative both sides of distance installation burner mounting flange place position of mounting hole 80-200mm;
In the 3rd step, the pore of burner mounting flange to be installed on the process and assemble shell ring: at first, in the flat cylindrical shell both ends of the surface of vertical lathe processing, 5-15mm secondary operations surplus is respectively stayed at two ends; Then, determine the position of four pores on same plane, the circumference at centering on the boring and milling machine and calibration; At last, shell ring at dress burner mounting flange processes the assembling pore, the burner mounting flange is cooperated with the assembling shell ring, between forms the fan-shaped groove that outer imperial palace is little, the interior bottom of described fan-shaped groove is semicircular arc, the bottom is provided with the location straight section between assembling shell ring inwall, the location straight section has the fit clearance of 0.3-0.5mm during assembling;
In the 4th step, adopt " ┓ " the shape connector is connected and fixed burner mounting flange and assembling shell ring, and employing space laser measuring system detects the positional precision of four burners of burner mounting flange;
The 5th step, bevel for welding.
2. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1 is characterized in that: behind the 5th step bevel for welding, heat treatment eliminates stress after the burner mounting flange welds with shell ring; Then in digital-control boring-milling machine processing burner mounting flange inside and outside circle and end surplus.
3. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: the welding process of burner mounting flange and assembling shell ring groove is: outer side weld manual welding bottoming, and remove connector behind manual welding to 5～10mm height, adopt saddle weldering or manual welding automatically, the welding process symmetry is carried out; Be specially successively four flanges are labeled as A flange, B flange, C flange and D flange along circumferential order, earlier the outer side weld of A flange is welded to fan-shaped groove depth 1/2 after namely transfer the welding C flange of symmetry with it to, with the outer side weld of C flange be welded to fan-shaped groove depth 1/2 after namely transfer welding adjacent B flange with it to, the outer side weld of B flange be welded to fan-shaped groove depth 1/2 after namely transfer the welding D flange of symmetry with it to, the D flange is disposable full with outer side weld weldering, and is last successively that the outside residue weld seam weldering of B flange, A flange and C flange is full again; After outer side weld has welded inwall location straight section is carried out back chipping and remove, and polish bevel for welding, groove face is carried out the detection of 100% magnetic or infiltration detection, guarantee not have by the welding sequence identical with outer side weld the inwall weld seam to be carried out manual welding behind the crackle.
4. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: process and assemble shell ring on numerical control vertical lathe, be benchmark with both ends of the surface, measurement size in conjunction with the burner mounting flange, behind centering on the digital-control boring-milling machine each processing such as burner mounting flange inside and outside circle, end face, sealing surface and screw thread is put in place, burner mounting flange and cylindrical shell machine and detect qualified back and assemble with all the other cylindrical shells.
5. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: described anti-deformation tool comprises that the anti-deformation of being located in the assembling shell ring supports ring flat-plate, ring flat-plate cylindrical and shell ring welding, establish a lacing wire of vertical bar shaped in the ring flat-plate inboard, between ring flat-plate side and cylinder inboard wall, establish No. two lacing wires.
6. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1, it is characterized in that: in second step, the method of choosing the gasification furnace assembling shell ring of burner mounting flange to be installed is: the shell ring that is used for installing the burner mounting flange on the intercepting gasification furnace housing stack shell, intercepted length is 2000mm～3500mm, treat burner mounting flange and this shell ring the assembling, process and detect qualified after, assemble with all the other cylindrical shells again.
7. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1 is characterized in that: the length L=20-50mm of described location straight section.
8. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1 is characterized in that: burner mounting flange and housing location straight section be monolateral, and to stay the size of fit-up gap be 0.3-0.5mm.
9. multiinjector opposed type gasifier nozzle mounting flange assembling and welding process as claimed in claim 1 is characterized in that: the radius R=5-15mm of the bottom semicircular arc of described fan-shaped groove, fan-shaped angle a=8-20 degree.
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| CN201310229173.6A CN103286466B (en) | 2013-06-09 | 2013-06-09 | Multi-nozzle oppositely-arranged type gasifier nozzle mounting flange installing and welding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115351451A (en) * | 2022-08-18 | 2022-11-18 | 东方电气集团东方锅炉股份有限公司 | Assembly welding method for side wall burner nozzle connecting pipe of multi-nozzle gasification furnace |
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| US20020170940A1 (en) * | 2001-05-21 | 2002-11-21 | Takashi Kazama | Welded tube manufacturing apparatus and welded tube internal surface bead cutting apparatus |
| CN101412157A (en) * | 2008-11-21 | 2009-04-22 | 中信重工机械股份有限公司 | Control method of large-sized mining grinding mill end flange welding deformation |
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| CN115351451A (en) * | 2022-08-18 | 2022-11-18 | 东方电气集团东方锅炉股份有限公司 | Assembly welding method for side wall burner nozzle connecting pipe of multi-nozzle gasification furnace |
| CN115351451B (en) * | 2022-08-18 | 2024-06-25 | 东方电气集团东方锅炉股份有限公司 | Welding method for nozzle connecting pipe of side wall of multi-nozzle gasifier |
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| CN103286466B (en) | 2015-03-11 |
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