CN105108462A - Turbine partition plate full-circle welding method - Google Patents
Turbine partition plate full-circle welding method Download PDFInfo
- Publication number
- CN105108462A CN105108462A CN201510619736.1A CN201510619736A CN105108462A CN 105108462 A CN105108462 A CN 105108462A CN 201510619736 A CN201510619736 A CN 201510619736A CN 105108462 A CN105108462 A CN 105108462A
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- Prior art keywords
- full circle
- welding
- mode
- split
- dividing plate
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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 turbine partition plate full-circle welding method. The method comprises the steps of optimizing a rough machining mode for a plate ring turned in an inner and outer ring full-circle mode, optimizing split guide vane machining for removing integral shroud tips of steam outlet side parts of two blades crossing a split, optimizing a plate ring assembling technology for carrying out full-circle clearance assembling on a blade grid and an inner ring and carrying out full-circle assembling on a combination of an outer ring, the blade grid and the inner ring, and optimizing main weld seam narrow-gap welding by adopting a full-circle mode for welding. The main weld seam quality of a partition plate is improved, and the repair rate is reduced; the machining precision of the partition plate is further improved, and the overall quality of the partition plate is ensured; meanwhile, the problem that welding work of notch building-up welding is heavy is solved, and the production efficiency is improved.
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 form of a large amount of employing at present.Though " full circle " mode of employing is assembled, when welding, actual employing " semicircle " mode is welded, that is: dividing plate leaf grating adopts full circle welding equipment; Dividing plate plate body, outer shroud after semicircle processing, synthesize full circle assemble with leaf grating again.Adopt narrow gap approaches to be interrupted welding when welding main weld, the main weld at split two ends respectively stays 20mm not weld, and treats that split heap postwelding adopts GMAW to weld the full main weld section of weldering again.After actual welding, arc place is received in the starting the arc of horizontal flange weld seam can be different according to groove depth, reserve about 20 ~ 100mm and do not weld, after dividing plate is split into two halves, adopt carbon arc vapour to dig again to be fallen by welding line joint plane, to polish groove with grinding wheel, manual electric arc welding will remain weld seam and weld and expire.
Aforementioned barriers welding is main exists following three problems:
1. groove is comparatively dark, and the carburized layer polishing after carbon arc vapour cannot dig by grinder buffing is completely clean, and joint penetration is poor, and weldquality is difficult to ensure, easily produces the weld defects such as pore, slag inclusion, incomplete fusion;
2. breach built-up welding welding capacity is large, and people's built-up welding one secondary dividing plate split breach needs four classes, consumes a large amount of manpowers.
3. built-up welding amount is large and shroud is relatively thin, is easy to shroud steam passage face to draw distortion, causes the quality problems of second dislocation on shroud steam passage face, split place.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, a kind of partition board of steam turbine full circle welding method being provided, dividing plate main weld quality can being improved by the method, reduce repair rate, enhance productivity, dividing plate main weld welding manner is optimized.
Realizing technical scheme of the present invention is: a kind of partition board of steam turbine full circle welding method, is characterized in that, comprise the steps:
A, plate ring roughing method optimizing;
A) optimize dividing plate outer shroud roughing mode, adopt the turning of full circle mode, do not stay split line, treat that main weld postwelding carries out separately again; Thus effectively ensure dividing plate outer shroud ovality and dimensional accuracy;
B) optimize dividing plate inner ring roughing mode, adopt the turning of full circle mode, a bit of not section of segmentation is respectively stayed at split place, treats that main weld postwelding carries out separately again; Thus effectively ensure dividing plate inner ring ovality and dimensional accuracy;
The processing of B, split stator is optimized;
Two the blade steam output side part integral shroud tips crossing over split are removed, to divide upper and lower half after the welding of dividing plate main weld;
C, plate ring assembly technology are optimized;
A) leaf grating and inner ring are carried out the assembling of full circle gap, control pitch circle size and leaf grating ovality;
B) again the assembly of outer shroud and leaf grating and inner ring is carried out full circle assembling, control fit-up gap and ovality;
D, main weld narrow gap welding are optimized;
A) adopt full circle mode to weld during main weld welding, do not stay the split section of weldering;
B) separate inner and outer rings, thus dividing plate is divided into upper and lower half.
The b of described steps A) step by step in, the 30mm not section of segmentation is respectively stayed at split place.
In described step B, blade steam output side part integral shroud tip, two, split place adopts Linear cut mode to remove.
The b of described step D) step by step in, adopt the mode of drilling main weld and sawing inner and outer rings to separate inner and outer rings respectively.
Described drilling main weld carries out on drilling machine.
Described drilling inner ring is carried out on drilling machine.
Described sawing outer shroud carries out on sawing machine.
The invention has the beneficial effects as follows:
1, take the uninterrupted welding manner of main weld full circle, improve dividing plate main weld quality, reduce repair rate.
2, by plate ring roughing mode, the processing of split stator, plate ring assembly technology and being optimized dividing plate main weld welding manner, dividing plate machining accuracy is improved further, ensure that the total quality of dividing plate.
3, effectively overcome the problem that breach built-up welding welding capacity is large, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is diaphragm structure schematic diagram of the present invention;
Fig. 2 is inner ring structural representation;
Fig. 3 is split guide vane structure schematic diagram;
Fig. 4 is the split stator schematic diagram after processing.
Number in the figure: 1-split, 2-inner ring, 3-outer shroud, 4-main weld, 5-blade, 6-leaf grating, 7-integral shroud tip, the 8-not section of segmentation, 9-dividing plate first, 10-dividing plate second, 11-steam output side.
Detailed description of the invention
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) optimize dividing plate outer shroud 3 roughing mode, adopt the turning of full circle mode, do not stay split line, treat that main weld 4 postwelding carries out separately again; Thus effectively ensure dividing plate outer shroud 3 ovality and dimensional accuracy;
B) optimize dividing plate inner ring 2 roughing mode, adopt the turning of full circle mode, the 30mm not section of segmentation 8 is respectively stayed at split 1 place, treats that main weld 4 postwelding carries out separately again; Thus effectively ensure dividing plate inner ring 2 ovality and dimensional accuracy;
The processing of B, split 1 stator is optimized;
Linear cut mode is adopted to remove two the blade 5 steam output side 11 part integral shroud tips 7 crossing over split 1, so that dividing plate main weld 4 divides upper and lower half after welding;
C, plate ring assembly technology are optimized;
A) leaf grating 6 and inner ring 2 are carried out the assembling of full circle gap, control pitch circle size and leaf grating 6 ovality;
B) again outer shroud 3 and the assembly of leaf grating 6 and inner ring 2 are carried out full circle assembling, control fit-up gap and ovality;
D, the optimization of main weld 4 narrow gap welding;
A) adopt full circle mode to weld when main weld 4 welds, do not stay split 1 section of weldering;
B) adopt drilling main weld 4 and inner ring 2 respectively, the mode of sawing outer shroud 3 separates inner and outer rings 2,3, thus dividing plate is divided into upper and lower half 9,10.Described drilling main weld 4 and inner ring 2 are carried out on drilling machine.Described sawing outer shroud 3 carries out on sawing machine.
Claims (7)
1. a partition board of steam turbine full circle welding method, is characterized in that, comprises the steps:
A, plate ring roughing method optimizing;
A) optimize dividing plate outer shroud roughing mode, adopt the turning of full circle mode, do not stay split line, treat that main weld postwelding carries out separately again; Thus effectively ensure dividing plate outer shroud ovality and dimensional accuracy;
B) optimize dividing plate inner ring roughing mode, adopt the turning of full circle mode, a bit of not section of segmentation is respectively stayed at split place, treats that main weld postwelding carries out separately again; Thus effectively ensure dividing plate inner ring ovality and dimensional accuracy;
The processing of B, split stator is optimized;
Two the blade steam output side part integral shroud tips crossing over split are removed, to divide upper and lower half after the welding of dividing plate main weld;
C, plate ring assembly technology are optimized;
A) leaf grating and inner ring are carried out the assembling of full circle gap, control pitch circle size and leaf grating ovality;
B) again the assembly of outer shroud and leaf grating and inner ring is carried out full circle assembling, control fit-up gap and ovality;
D, main weld narrow gap welding are optimized;
A) adopt full circle mode to weld during main weld welding, do not stay the split section of weldering;
B) separate inner and outer rings, thus dividing plate is divided into upper and lower half.
2. partition board of steam turbine full circle welding method according to claim 1, is characterized in that: the b of described steps A) step by step in, the 30mm not section of segmentation is respectively stayed at split place.
3. partition board of steam turbine full circle welding method according to claim 1, is characterized in that: in described step B, and blade steam output side part integral shroud tip, two, split place adopts Linear cut mode to remove.
4. partition board of steam turbine full circle welding method according to claim 1, is characterized in that: the b of described step D) step by step in, adopt drilling main weld and inner ring respectively, 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, is characterized in that: described drilling main weld carries out on drilling machine.
6. partition board of steam turbine full circle welding method according to claim 4, is characterized in that: described drilling inner ring is carried out on drilling machine.
7. partition board of steam turbine full circle welding method according to claim 4, is characterized in that: described sawing outer shroud carries out on sawing machine.
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN105108462A true CN105108462A (en) | 2015-12-02 |
| CN105108462B 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848593A (en) * | 2019-03-19 | 2019-06-07 | 哈尔滨汽轮机厂有限责任公司 | A method of eliminating the closing in deformation of steam turbine low-pressure hollow shelf outer ring split |
| CN110102970A (en) * | 2019-04-25 | 2019-08-09 | 沈阳透平机械股份有限公司 | A kind of processing method of centrifugal compressor partition |
| CN110936110A (en) * | 2019-11-29 | 2020-03-31 | 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 |
| CN114542213A (en) * | 2022-03-09 | 2022-05-27 | 中国船舶重工集团公司第七0三研究所 | Marine steam turbine partition plate structure |
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| WO2003020469A1 (en) * | 2001-08-29 | 2003-03-13 | Volvo Aero Corporation | A method for manufacturing a stator or rotor component |
| 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 |
-
2015
- 2015-09-25 CN CN201510619736.1A patent/CN105108462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003020469A1 (en) * | 2001-08-29 | 2003-03-13 | Volvo Aero Corporation | A method for manufacturing a stator or rotor component |
| 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 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848593A (en) * | 2019-03-19 | 2019-06-07 | 哈尔滨汽轮机厂有限责任公司 | A method of eliminating the closing in deformation of steam turbine low-pressure hollow shelf outer ring split |
| 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 |
| CN110102970A (en) * | 2019-04-25 | 2019-08-09 | 沈阳透平机械股份有限公司 | A kind of processing method of centrifugal compressor partition |
| 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 |
| CN110936110A (en) * | 2019-11-29 | 2020-03-31 | 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 |
| 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 |
| CN114542213A (en) * | 2022-03-09 | 2022-05-27 | 中国船舶重工集团公司第七0三研究所 | Marine steam turbine partition plate structure |
| 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 |
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| CN105108462B (en) | 2017-04-05 |
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