CN101705899A - Application of steel plate compression molding method in producing large-scale curved annular component of water turbine - Google Patents
Application of steel plate compression molding method in producing large-scale curved annular component of water turbine Download PDFInfo
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- CN101705899A CN101705899A CN200910234037A CN200910234037A CN101705899A CN 101705899 A CN101705899 A CN 101705899A CN 200910234037 A CN200910234037 A CN 200910234037A CN 200910234037 A CN200910234037 A CN 200910234037A CN 101705899 A CN101705899 A CN 101705899A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a new application of a steel plate compression molding method, in particular to the application of a steel plate compression molding method in producing a large-scale curved annular component of a water turbine. As for the large-scale annular curved component of a cross-flow type and axial-flow type water turbine, the traditional design adopts multi-section conical surface to approximately fit the curved surface, has large welding working capacity, and has the problems of deformation of workpieces, unqualified products and high repair rate. In the guide vane outer ring and guide vane inner ring of the cross-flow type water turbine, the spherical surface and double curved surface compression molded by steel plate substitute the design of the original multi-section conical surface fitting spherical surface and double curved surface so that the five-section conical surface fitting guide vane outer ring curved surface is changed into one section of mould pressing spherical and one segment of mould pressing double curved surface, the molded lines of the spherical surface and the double curved surface after being welded are completely identical to the guide vane outer ring flow surface, the number of the annular welding lines is reduced from 4 to 1, the welding deformation is effectively controlled, and the welding line has smooth appearance, thereby materials are saved, the working period is shortened, and the qualification rate of products is greatly improved.
Description
One, technical field:
The present invention relates to the new application of steel plate compression molding method, specifically relate to the application of steel plate compression molding method in the large-scale curved annular component of water turbine manufactures and designs.
Two, background technique:
The steel plate compression molding technology is particularly used in the manufacturing and designing of spherical tank widely at pressure vessels for the chemical industry, the large-scale bulb of my company is made the large-scale curved annular component of used tubular and axial flow hydraulic turbine, is the large thin-wall annular component that internal surface need be processed as the stator outer shroud of tubular turbine; Tubular and runner envelope axial flow hydraulic turbine also needs to be processed into the large thin-wall annular component, traditional manufacturing and designing is to adopt the multistage conical surface to be similar to the method for fitting surface, not only welding job amount is big, and causes workpiece deformation easily, causes the defective problem such as repeatedly reprocess of product.
Three, summary of the invention:
The present invention relates to the new purposes of steel plate compression molding method, specifically relate to the application of steel plate compression molding method in the large-scale curved annular component of water turbine.
In order to overcome the shortcoming that the tratitional technology multistage conical surface is similar to the fitting surface method, we are applied to the steel plate compression molding technology in the design of large-scale curved annular component of the large-scale bulb through-flow type of my company and axial flow hydraulic turbine, ring in the stator outer shroud of tubular turbine and the stator is adopted the sphere of steel plate compression molding and the design that hyperboloid replaces former multistage conical surface match sphere, in stator, outer shroud designs again, make 5 sections conical surface matches of original usefulness stator outer shroud curved surface change into one section mold pressing sphere and one section mold pressing hyperboloid, sphere is fully consistent with stator outer shroud flow-passing surface with its molded lines of hyperboloid welding back, the machining allowance that encircles on the flow-passing surface in stator outer shroud and the stator in the design is identical, makes the ring-like weld seam in intrinsic centre be reduced to 1 (seeing shown in Figure 1) by 4.
Tubular and runner envelope axial flow hydraulic turbine also adopts compression molding technology, not only the thickness of corrosion resistant plate reduces, saved material, and reduced multistage conical surface fitting surface and the ring-like weld seam that produces, reduce the welding job amount, thereby make the runner envelope post welding distortion also obtain effective control.
The application of steel plate compression molding method in the large-scale curved annular component of water turbine manufactures and designs, the weld seam of the large-scale ring-like curved surface thin-walled workpiece of water turbine is significantly reduced, welding deformation is effectively controlled, saved the processing man-hour of welding consumables and raw material and welding, the manufacture cycle of these parts is shortened greatly, in a word, the application of compression-moulding methods in water turbine really reached the purpose of getting twice the result with half the effort.
Four, description of drawings:
The longitudinal section of Fig. 1---the guide vanes of water turbine outer shroud that manufactures and designs with steel plate compression molding method;
Fig. 2---use the longitudinal section of the stator outer shroud of conventional method multistage conical surface fitting surface manufacturing;
Reference character: A-mold pressing sphere B-mold pressing hyperboloid
1,2,3,4,5 are the curved surface with 5 sections conical surface matches.
1., 2., 3., 4., 5., 6. represent welding seam No.
Five, embodiment:
Embodiment: prepare the stator outer shroud of tubular turbine, the runner envelope of tubular and axial flow hydraulic turbine with steel plate compression molding method.
Along with manufacturing and designing of my company's large-scale bulb through-flow type hydro-turbo machine, the steel plate compression molding technology progressively is applied in the design of large-scale curved annular component of the large-scale bulb through-flow type of my company and axial flow hydraulic turbine.
The application of compression molding technology in water turbine manufactures and designs solved in the traditional design because of adopting the multistage conical surface to be similar to the welding job amount that fitting surface produces greatly, causes workpiece deformation many, and causes the defective problem of repeatedly reprocessing of workpiece.
The large-scale bulb through-flow type unit of my company's subpackage, its water turbine are designed to former Kvaerner company, and the stator outer shroud of this water turbine is the large thin-wall annular component that internal surface need be processed.For guaranteeing the wall thickness after this curved annular component is processed, to accomplish the rational conical surface segmentation during design, make conical surface segmentation the least possible, so not only can reduce the thickness of steel plate but also ring-like weld seam is reduced, the workpiece post welding distortion is little to reach, the uniform relatively purpose of processing back wall thickness.Guigang unit stator outer shroud is former to be designed to adopt 5 sections conical surfaces to come fitting surface, and single is fully reasonably with regard to adopting multistage conical surface fitting surface, but still can't solve the welding deformation problem of workpiece, Guigang 1
#Machine stator outer shroud welding back is because amount of deformation is too big, and is seriously inhomogeneous through the amount of finish of scribing inspection workpiece, and some places are processed wears the back and other positions remain the phenomenon at no machining allowance, thereby causes Guigang 1
#Machine stator outer shroud repeatedly carries out handling than type and built-up welding, its internal surface is that the built-up welding area of working surface reaches 2/3rds of total inner surface area, built-up welding has in various degree also been carried out at some position of outer surface, because this parts are produced first for my company, the experience of each side is all not enough, particularly aspect the control welding deformation.This stator outer shroud hands over inspection qualified from post-weld annealed is intact to line, wholely reaches half a year than shape and built-up welding processing time, has expended a large amount of man-hours and welding consumables.
For addressing the above problem, the designer is applied to the compression molding technology in the pressure vessels for the chemical industry in the water turbine design of my company.The Guigang unit is from 3
#Machine begins the sphere of ring employing steel plate compression molding in its stator outer shroud and the stator and the design that hyperboloid replaces former multistage conical surface match sphere, the stator inner and outer rings has been carried out structural design again, make former 5 sections conical surface match stator outer shroud curved surfaces change into one section mold pressing sphere and one section mold pressing hyperboloid, sphere is fully consistent with stator outer shroud flow-passing surface with its molded lines of hyperboloid welding back, and the machining allowance that encircles on the flow-passing surface in stator outer shroud and the stator in the design is identical.Make the middle girth weld in the former design be reduced to 1 by 4, welding job amount has like this reduced 3/4ths, has saved a large amount of welding consumabless simultaneously, Guigang 3
#, 4
#Machine stator outer shroud postwelding once hands over inspection qualified, makes the manufacture cycle of stator outer shroud shorten six months, but also has saved a large amount of workloads than shape and built-up welding processing.
Because compression molding technology is in the Guigang 3
#, 4
#Successful Application on the machine, this technology has obtained using widely in the water turbine design at present, particularly encircles in the stator outer shroud in the large-scale bulb through-flow type hydro-turbo machine, the stator, is most widely used.Tubular and the runner envelope axial-flow Kaplan water turbine has also adopted compression molding technology.
For runner envelope,, can make the thickness of corrosion resistant plate reduce about 20% behind the employing compression molding technology because its flow-passing surface material is stainless steel.So not only saved stainless steel material but also reduced multistage conical surface fitting surface and the girth weld that produces, and reduced the welding job amount, thereby made the post welding distortion of runner envelope also obtain effective control.
Accompanying drawing 1 is the longitudinal section of the stator outer shroud that utilizes compression molding technology and manufacture and design, can be clear that very much, the machining allowance of stator outer shroud flow-passing surface is even, the wall thickness of processing rear guide vane outer shroud is even, the centre is a weld seam only, because outward appearance seamlessly transits and weld seam is few especially, also improved the appearance quality of product simultaneously.
Claims (1)
1. the application of steel plate compression molding method in large-scale curved annular component of water turbine manufactures and designs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910234037A CN101705899A (en) | 2009-11-18 | 2009-11-18 | Application of steel plate compression molding method in producing large-scale curved annular component of water turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910234037A CN101705899A (en) | 2009-11-18 | 2009-11-18 | Application of steel plate compression molding method in producing large-scale curved annular component of water turbine |
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| CN101705899A true CN101705899A (en) | 2010-05-12 |
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| CN200910234037A Pending CN101705899A (en) | 2009-11-18 | 2009-11-18 | Application of steel plate compression molding method in producing large-scale curved annular component of water turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042090A (en) * | 2013-01-06 | 2013-04-17 | 重庆水轮机厂有限责任公司 | Water turbine runner blade pressure molding method |
| CN105436272A (en) * | 2014-08-29 | 2016-03-30 | 西门子（中国）有限公司 | Method for manufacturing large curved-surface component of turbine |
| CN114991091A (en) * | 2022-05-10 | 2022-09-02 | 中国葛洲坝集团第二工程有限公司 | Anti-impact wear-resistant concrete pouring method for hyperbolic twisted surface flow surface bottom plate |
-
2009
- 2009-11-18 CN CN200910234037A patent/CN101705899A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042090A (en) * | 2013-01-06 | 2013-04-17 | 重庆水轮机厂有限责任公司 | Water turbine runner blade pressure molding method |
| CN103042090B (en) * | 2013-01-06 | 2015-10-28 | 重庆水轮机厂有限责任公司 | Turbine runner blade compression-moulding methods |
| CN105436272A (en) * | 2014-08-29 | 2016-03-30 | 西门子（中国）有限公司 | Method for manufacturing large curved-surface component of turbine |
| CN114991091A (en) * | 2022-05-10 | 2022-09-02 | 中国葛洲坝集团第二工程有限公司 | Anti-impact wear-resistant concrete pouring method for hyperbolic twisted surface flow surface bottom plate |
| CN114991091B (en) * | 2022-05-10 | 2024-03-22 | 中国葛洲坝集团第二工程有限公司 | Anti-impact and wear-resistant concrete pouring method for bottom plate of double-twist-surface overflow surface |
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Open date: 20100512 |