CN105108462B - A kind of partition board of steam turbine full circle welding method - Google Patents
A kind of partition board of steam turbine full circle welding method Download PDFInfo
- Publication number
- CN105108462B CN105108462B CN201510619736.1A CN201510619736A CN105108462B CN 105108462 B CN105108462 B CN 105108462B CN 201510619736 A CN201510619736 A CN 201510619736A CN 105108462 B CN105108462 B CN 105108462B
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- China
- Prior art keywords
- full circle
- split
- dividing plate
- partition board
- steam turbine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
Abstract
The invention discloses a kind of partition board of steam turbine full circle welding method, including inner and outer rings full circle mode turning plate ring roughing method optimizing step, the two blade steam output side parts integral shroud tip across split is removed split stator processing optimization step, leaf grating and internal ring are carried out full circle gap assembles the assembly of outer shroud and leaf grating and internal ring to carry out the plate ring assembly technology optimization step and the main weld narrow gap welding optimization step welded using full circle mode of full circle assembling；The present invention improves dividing plate main weld quality, reduces repair rate；Dividing plate machining accuracy is made further to improve, it is ensured that the total quality of dividing plate；Effectively overcome the big problem of breach built-up welding welding capacity simultaneously, improve production efficiency.
Description
Technical field
The present invention relates to partition board of steam turbine welding field, specifically a kind of partition board of steam turbine full circle welding method.
Background technology
Narrow gap welding dividing plate is a kind of diaphragm structure forms of a large amount of employings at present.Though assembled using " full circle " mode,
But it is actual in welding to be welded using " semicircle " mode, i.e.,：Dividing plate leaf grating adopts full circle welding equipment；Dividing plate plate body, outer shroud are
Synthesize full circle Jing after semicircle processing to be assembled with leaf grating again.When main weld is welded using the interruption welding of narrow gap method, in
The main weld at facet two ends respectively stays 20mm not weld, and treats that split heap postwelding does not weld section using the full main weld of GMAW welderings again.Due to reality
After the welding of border, the starting the arc of horizontal flange weld seam is received can be different according to groove depth at arc, reserve about 20～100mm and do not weld, treat every
After plate is split into two halves, then dig to fall welding line joint plane using carbon arc vapour, polished groove with grinding wheel, manual electric arc welding is by remaining weldering
It is seam welding full.
Aforementioned barriers welding is primarily present three below problem：
1. groove is deeper, grinder buffing cannot completely will carbon arc vapour dig after carburized layer polishing it is clean, joint penetration is poor,
Weldquality it is difficult to ensure that, easily produce pore, slag inclusion, the weld defect such as incomplete fusion；
2. breach built-up welding welding capacity is big, and one secondary dividing plate split breach of people's built-up welding needs four classes, consumes substantial amounts of manpower.
3. built-up welding amount is big and shroud is relatively thin, it is easy to draws shroud steam passage face and deforms, causes shroud vapour at split
The quality problems of lower half dislocation on road face.
The content of the invention
The invention aims to solve above-mentioned technical problem, there is provided a kind of partition board of steam turbine full circle welding method, use
The method can improve dividing plate main weld quality, reduce repair rate, and improve production efficiency is carried out to dividing plate main weld welding manner
Optimization.
Realization the technical scheme is that：A kind of partition board of steam turbine full circle welding method, it is characterised in that including as follows
Step：
A, plate ring roughing method optimizing；
a）Optimization dividing plate outer shroud roughing mode, using full circle mode turning, does not stay split line, treats main weld postwelding again
Carry out separating；So as to dividing plate outer shroud ovality and dimensional accuracy is effectively ensured；
b）Optimization dividing plate internal ring roughing mode, using full circle mode turning, respectively stay at split it is a bit of do not split section,
Treat that main weld postwelding carries out separating again；So as to dividing plate internal ring ovality and dimensional accuracy is effectively ensured；
B, the processing optimization of split stator；
Two blade steam output side parts integral shroud tip across split is removed, so as to after dividing plate main weldering seam welding points
Upper and lower half；
C, the optimization of plate ring assembly technology；
a）Leaf grating and internal ring are carried out into the assembling of full circle gap, control pitch circle size and leaf grating ovality；
b）Assembly by outer shroud with leaf grating and internal ring carries out full circle assembling, control fit-up gap and ovality again；
D, the optimization of main weld narrow gap welding；
a）Welded using full circle mode during main weldering seam welding, do not stay split not weld section；
b）Separate inner and outer rings, so as to dividing plate is divided into upper and lower half.
The b of step A）In step by step, 30mm at split, is respectively stayed not split section.
In step B, at split, two blade steam output side parts integral shroud tip is removed using wire cutting mode.
The b of step D）In step by step, the mode that drilling main weld and sawing inner and outer rings is respectively adopted separates inside and outside
Ring.
The drilling main weld is carried out on drilling machine.
The drilling internal ring is carried out on drilling machine.
The sawing outer shroud is carried out on sawing machine.
The invention has the beneficial effects as follows：
1st, the uninterrupted welding manner of main weld full circle is taken, dividing plate main weld quality is improve, is reduced repair rate.
2nd, processed by plate ring roughing mode, split stator, plate ring assembly technology and to dividing plate main weldering seam welding side
Formula is optimized, and dividing plate machining accuracy is further improved, it is ensured that the total quality of dividing plate.
3rd, the big problem of breach built-up welding welding capacity is effectively overcome, production efficiency is improve.
Description of the drawings
Fig. 1 is diaphragm structure schematic diagram of the present invention；
Fig. 2 is internal ring structural representation；
Fig. 3 is split guide vane structure schematic diagram；
Fig. 4 is the split stator schematic diagram after processing.
Label in figure：1-split, 2-internal ring, 3-outer shroud, 4-main weld, 5-blade, 6-leaf grating, 7-integral shroud
Tip, 8-do not split section, 9-dividing plate upper half, 10-dividing plate lower half, 11-steam output side.
Specific embodiment
As shown in Figures 1 to 4, a kind of partition board of steam turbine full circle welding method, comprises the steps：
A, plate ring roughing method optimizing；
a）3 roughing mode of optimization dividing plate outer shroud, using full circle mode turning, does not stay split line, treats 4 postwelding of main weld
Carry out again separating；So as to 3 ovality of dividing plate outer shroud and dimensional accuracy is effectively ensured；
b）2 roughing mode of optimization dividing plate internal ring, using full circle mode turning, the two ends of split 1 respectively stay 30mm regardless of
Section 8 is cut, treats that 4 postwelding of main weld carries out separating again；So as to 2 ovality of dividing plate internal ring and dimensional accuracy is effectively ensured；
B, the processing optimization of 1 stator of split；
Two 5 steam output sides of blade, 11 part integral shroud tip 7 across split 1 is removed using wire cutting mode, so as to
Dividing plate main weld 4 divides upper and lower half after welding；
C, the optimization of plate ring assembly technology；
a）Leaf grating 6 and internal ring 2 are carried out into the assembling of full circle gap, 6 ovality of pitch circle size and leaf grating is controlled；
b）Assembly by outer shroud 3 with leaf grating 6 and internal ring 2 carries out full circle assembling, control fit-up gap and ovality again；
D, the optimization of 4 narrow gap welding of main weld；
a）Main weld 4 is welded using full circle mode when welding, and does not stay split 1 not weld section；
b）Drilling main weld 4 and internal ring 2 is respectively adopted, the mode of sawing outer shroud 3 separates inner and outer rings 2,3, so as to by dividing plate
It is divided into upper and lower half 9,10.The drilling main weld 4 and internal ring 2 are carried out on drilling machine.The sawing outer shroud 3 is carried out on sawing machine.
Claims (7)
1. a kind of partition board of steam turbine full circle welding method, it is characterised in that comprise the steps：
A, plate ring roughing method optimizing；
a）Optimization dividing plate outer shroud roughing mode, using full circle mode turning, does not stay split line, treats that main weld postwelding is carried out again
Separate；So as to dividing plate outer shroud ovality and dimensional accuracy is effectively ensured；
b）Optimization dividing plate internal ring roughing mode, using full circle mode turning, respectively stay at split it is a bit of do not split section, wait to lead
Weld seam postwelding carries out separating again；So as to dividing plate internal ring ovality and dimensional accuracy is effectively ensured；
B, the processing optimization of split stator；
Two blade steam output side parts integral shroud tip across split is removed, to divide upper and lower after dividing plate main weldering seam welding
Half；
C, the optimization of plate ring assembly technology；
a）Leaf grating and internal ring are carried out into the assembling of full circle gap, control pitch circle size and leaf grating ovality；
b）Assembly by outer shroud with leaf grating and internal ring carries out full circle assembling, control fit-up gap and ovality again；
D, the optimization of main weld narrow gap welding；
a）Welded using full circle mode during main weldering seam welding, do not stay split not weld section；
b）Separate inner and outer rings, so as to dividing plate is divided into upper and lower half.
2. partition board of steam turbine full circle welding method according to claim 1, it is characterised in that：The b of step A）Step by step
In, respectively stay 30mm not split section at split.
3. partition board of steam turbine full circle welding method according to claim 1, it is characterised in that：In step B, at split
Two blade steam output side parts integral shroud tip is removed using wire cutting mode.
4. partition board of steam turbine full circle welding method according to claim 1, it is characterised in that：The b of step D）Step by step
In, drilling main weld is respectively adopted and internal ring, the mode of sawing outer shroud separate inner and outer rings.
5. partition board of steam turbine full circle welding method according to claim 4, it is characterised in that：The drilling main weld is in drilling machine
On carry out.
6. partition board of steam turbine full circle welding method according to claim 4, it is characterised in that：The drilling internal ring is on drilling machine
Carry out.
7. partition board of steam turbine full circle welding method according to claim 4, it is characterised in that：The sawing outer shroud is on sawing machine
Carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619736.1A CN105108462B (en) | 2015-09-25 | 2015-09-25 | A kind of partition board of steam turbine full circle welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619736.1A CN105108462B (en) | 2015-09-25 | 2015-09-25 | A kind of partition board of steam turbine full circle welding method |
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| Publication Number | Publication Date |
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| CN105108462A CN105108462A (en) | 2015-12-02 |
| CN105108462B true CN105108462B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510619736.1A Active CN105108462B (en) | 2015-09-25 | 2015-09-25 | A kind of partition board of steam turbine full circle welding method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848593B (en) * | 2019-03-19 | 2021-02-12 | 哈尔滨汽轮机厂有限责任公司 | Method for eliminating steam turbine low-pressure hollow partition plate outer ring middle split surface closing-up deformation |
| CN110102970B (en) * | 2019-04-25 | 2020-12-29 | 沈阳透平机械股份有限公司 | Method for processing centrifugal compressor partition plate |
| CN110936110B (en) * | 2019-11-29 | 2022-03-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining process method for semi-ring parts |
| CN113579661A (en) * | 2021-08-23 | 2021-11-02 | 成都市新美加机械设备制造有限公司 | Partition plate processing technology |
| CN114542213B (en) * | 2022-03-09 | 2023-12-01 | 中国船舶重工集团公司第七0三研究所 | Marine steam turbine baffle structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019540A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Manufacturing method of fixed blade welding type clapboard of steam turbine |
| CN102606224A (en) * | 2011-12-19 | 2012-07-25 | 山东青能动力股份有限公司 | Impulse steam turbine welding partition board with embedded fixed blades and assembling process of impulse steam turbine welding partition board |
| CN202391478U (en) * | 2011-12-19 | 2012-08-22 | 山东青能动力股份有限公司 | Static blade embedded type welding partition plate for impulse turbine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE519781C2 (en) * | 2001-08-29 | 2003-04-08 | Volvo Aero Corp | Process for producing a stator or rotor component |
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2015
- 2015-09-25 CN CN201510619736.1A patent/CN105108462B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019540A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Manufacturing method of fixed blade welding type clapboard of steam turbine |
| CN102606224A (en) * | 2011-12-19 | 2012-07-25 | 山东青能动力股份有限公司 | Impulse steam turbine welding partition board with embedded fixed blades and assembling process of impulse steam turbine welding partition board |
| CN202391478U (en) * | 2011-12-19 | 2012-08-22 | 山东青能动力股份有限公司 | Static blade embedded type welding partition plate for impulse turbine |
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| CN105108462A (en) | 2015-12-02 |
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