CN101418559B - Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base - Google Patents
Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base Download PDFInfo
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- CN101418559B CN101418559B CN200810243087XA CN200810243087A CN101418559B CN 101418559 B CN101418559 B CN 101418559B CN 200810243087X A CN200810243087X A CN 200810243087XA CN 200810243087 A CN200810243087 A CN 200810243087A CN 101418559 B CN101418559 B CN 101418559B
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- outer shroud
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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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Abstract
The invention provides a method for mounting a tube-shaped base of an ultra-large bulb tubular turbine generator set. The method comprises the following steps: an inner ring is assembled; circular arcs forming a transitional lining, an outer ring lining and an outer ring respectively are lifted in mounting positions to assemble into a circular ring; the positions of the transitional lining, the outer ring lining and the outer ring are adjusted, so that end faces of the circular ring correspond to form two ring-shaped weld seams; connecting plates are welded between the transitional lining and the outer ring lining and between the outer ring lining and the outer ring; the concentricity, the roundness and the center height of the inner and outer rings of the tube-shaped base are adjusted; a support frame is welded between the inner ring and the outer ring of the tube-shaped base; the concrete is cast; the parts of the ring-shaped weld seams, which are not blocked by the connecting plates, are welded; the connecting plates are cut off, and the parts of the ring-shaped weld seams, which are blocked by the connecting plates, are welded; and the support frame is cut off. The mounting process has the advantages of greatly lowering deformation caused by thermal stress, ensuring the roundness of the outer ring of the tube-shaped base, reducing mounting difficulty, lowering mounting risk and improving mounting precision.
Description
Technical field
The present invention relates to a kind of mounting method of super large type light bulb through-flow type hydro-turbo generator set pipe type base, belong to the scaled bulb tubular hydraulic generator technical group field.
Background technology
From world's hydroelectric development trend as can be seen, the importance of low-head hydroelectric plant construction grows stronger day by day, the size of generating set is also developing to large-scale, super-huge direction, and China water power market also from high water head to low-head development, thereby make that the scaled bulb tubular hydraulic generator group has been subjected to academia and industrial circle is paid close attention to widely.
The scaled bulb tubular hydraulic generator group mainly comprises the hydraulic turbine and the generator of a shared main shaft, and generator, parts of bearings are arranged in the light bulb head, and whole unit places runner according to tubular seat and supplemental support level; Tubular seat is made up of interior ring and outer shroud, and current pass through between the inner and outer rings of tubular seat.Tubular seat is the most important inlet part of scaled bulb tubular hydraulic generator group, it is as the main support of unit, and stress, the loading of factory building part and other load main tube shape seat that the weight of whole unit, positive and negative hydraulic thrust, hydraulic pressure, generator torque, thermal deformation produce and pillar carry to kill to reach and mix the earth basis; Tubular seat is the benchmark that each parts of unit are installed, and all directly admittedly on tubular seat, therefore tubular seat must have enough rigidity and intensity for distributor, bearing, generator unit stator.
It is the Bulb Turbine Units of the present single-machine capacity maximum of China that the Guangxi bridge consolidates the power station, belong to the super large type light bulb through-flow type hydro-turbo generating set, the size and the quality of its tubular seat are all bigger, whole tubular seat quality reaches 243.9 tons, outer shroud maximum size reaches 13310mm, because quality is excessive, can't lift, therefore tubular seat outer shroud is divided into three joints, reach the purpose that satisfies lifting with the weight that alleviates single parts, this three joint is respectively: transition back boxing, outer shroud back boxing, outer shroud to the downstream from upstream side.But for oversized scaled bulb tubular hydraulic generator group, the quality of the transition back boxing of its tubular seat outer shroud, outer shroud back boxing, outer shroud is appointed so very big, therefore transition back boxing, outer shroud back boxing, outer shroud are divided into three lobes more respectively, just be divided into three sections circular arcs separately, carry out assembled on site after hanging in mounting shaft respectively, again transition back boxing, outer shroud back boxing, outer shroud are welded into tubular seat outer shroud, concreting then.The concrete mounting method of this welding after-pouring is easy to generate stress deformation, and the circularity of outer shroud can not guarantee.
Summary of the invention
Technical problem to be solved by this invention is, overcomes existing tubular seat mounting method and very easily produces the deficiency of plastic deformation, provides a kind of installation accuracy high installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base.
The technical solution adopted for the present invention to solve the technical problems is as follows: installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base, and its step is as follows:
1), ring in the assembling, and interior ring hung in mounting shaft;
2), the circular arc that will form transition back boxing, outer shroud back boxing, outer shroud respectively hangs in the installation site, and is assembled into transition back boxing, outer shroud back boxing, outer shroud, and is fixing by welding between the circular arc;
3), adjust the position of transition back boxing, outer shroud back boxing, outer shroud, make three's annulus end face correspondence, form the twice circumferential weld;
4), at the spot welding junction plate between transition back boxing and the outer shroud back boxing, between outer shroud back boxing and the outer shroud, the three is fixed as one;
5), adjust concentricity, circularity, the center elevation of tubular seat inner and outer rings, make it satisfy installation requirement;
6), weld bracing frame between the tubular seat inner and outer rings;
7), in the mounting shaft fluid concrete, and carry out maintenance;
8), treat concrete setting after, adopt symmetry, the method for the welding that distributes, regresses, do not weld being connected the part that plate blocks in the twice circumferential weld;
9), prescind junction plate, weld being connected the part that plate blocks in the twice circumferential weld;
10), prescind to be fixed between the tubular seat inner and outer rings and weld bracing frame.
Beneficial effect of the present invention is as follows: on-the-spot transition back boxing, outer shroud back boxing, the outer shroud installed of this installation technology, with junction plate fixedly transition back boxing, outer shroud back boxing, outer shroud, then with fixing tubular the inner and outer rings of bracing frame, fluid concrete and carry out maintenance again, then circumferential weld is welded, and adopt symmetry, distribute to regress and weld, this technology greatly reduces the deformation that is produced by thermal stress, has guaranteed the circularity of tubular seat outer shroud; The tubular seat of the present invention mounting process has reduced installation difficulty, has reduced installation risk, has improved installation accuracy, good solution the installation question of super large type light bulb through-flow type hydro-turbo generator set pipe type base.
Description of drawings
Fig. 1 is a super large type light bulb through-flow type hydro-turbo generator set pipe type base outer rim side view.
The specific embodiment
With reference to the accompanying drawings and in conjunction with example the present invention is described in further detail.But the invention is not restricted to given example.
As Fig. 1 super large type light bulb through-flow type hydro-turbo generating set outer rim side TV structure schematic diagram, among the figure, 1 for weld seam three circular arcs forming outer shroud back boxing between, 31 is weld seam three circular arcs of composition outer shroud between for the weld seam between three circular arcs forming the transition back boxing, 21 for crossing weld seam between back boxing and the outer shroud back boxing, 5 for the weld seam between outer shroud back boxing and the outer shroud, 11 for outer shroud, 4 for outer shroud back boxing, 3 for transition back boxing, 2.
Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base of the present invention, its step is as follows:
1), ring in the assembling, and interior ring hung in mounting shaft;
2), the circular arc that will form transition back boxing, outer shroud back boxing, outer shroud respectively hangs in the installation site, and is assembled into transition back boxing, outer shroud back boxing, outer shroud, and is fixing by welding between the circular arc;
3), adjust the position of transition back boxing, outer shroud back boxing, outer shroud, make three's annulus end face correspondence, form the twice circumferential weld;
4), at the spot welding junction plate between transition back boxing and the outer shroud back boxing, between outer shroud back boxing and the outer shroud, the three is fixed as one;
5), adjust concentricity, circularity, the center elevation of tubular seat inner and outer rings, make it satisfy installation requirement;
6), weld bracing frame between the tubular seat inner and outer rings;
7), in the mounting shaft fluid concrete, and carry out maintenance;
8), treat concrete setting after, adopt symmetry, the method for the welding that distributes, regresses, do not weld being connected the part that plate blocks in the twice circumferential weld;
9), prescind junction plate, weld being connected the part that plate blocks in the twice circumferential weld;
10), prescind to be fixed between the tubular seat inner and outer rings and weld bracing frame.
In order to reduce thermal stress, the junction plate that welds in the step 4) is evenly distributed on the circumferential weld between transition back boxing and the outer shroud back boxing, is evenly distributed on the circumferential weld between outer shroud back boxing and the outer shroud.Junction plate welds by the method for spot welding.
As shown in Figure 1, in the mounting method of the present invention, weld seam 21 between three circular arcs of weld seam 11 between three circular arcs of composition transition back boxing 1 and composition outer shroud back boxing 2 staggers, weld seam 31 between weld seam 21 between three circular arcs of composition outer shroud back boxing 2 and three circular arcs of composition outer shroud 3 staggers, weld seam staggers mutually and can reduce thermal stress deformation effectively, and strengthens the intensity of whole tubular seat outer shroud.
Claims (4)
1. installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base, its step is as follows:
1), ring in the assembling, and interior ring hung in mounting shaft;
2), the circular arc that will form transition back boxing, outer shroud back boxing, outer shroud respectively hangs in the installation site, and is assembled into transition back boxing, outer shroud back boxing, outer shroud, and is fixing by welding between the circular arc;
3), adjust the position of transition back boxing, outer shroud back boxing, outer shroud, make three's annulus end face correspondence, form the twice circumferential weld;
4), at the spot welding junction plate between transition back boxing and the outer shroud back boxing, between outer shroud back boxing and the outer shroud, the three is fixed as one;
5), adjust concentricity, circularity, the center elevation of tubular seat inner and outer rings, make it satisfy installation requirement;
6), weld bracing frame between the tubular seat inner and outer rings;
7), in the mounting shaft fluid concrete, and carry out maintenance;
8), treat concrete setting after, adopt symmetry, the method for the welding that distributes, regresses, do not weld being connected the part that plate blocks in the twice circumferential weld;
9), prescind junction plate, weld being connected the part that plate blocks in the twice circumferential weld;
10), prescind the welding bracing frame that is fixed between the tubular seat inner and outer rings.
2. to remove 1 described installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base according to right, it is characterized in that described junction plate is evenly distributed on the circumferential weld between transition back boxing and the outer shroud back boxing.
3. to remove 1 described installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base according to right, it is characterized in that described junction plate is evenly distributed on the circumferential weld between outer shroud back boxing and the outer shroud.
4. according to any described installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base in the claim 1 to 3, the weld seam that it is characterized in that forming the weld seam between three circular arcs of transition back boxing and form between three circular arcs of outer shroud back boxing staggers, and the weld seam of forming between three circular arcs of weld seam and composition outer shroud between three circular arcs of outer shroud back boxing staggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810243087XA CN101418559B (en) | 2008-12-08 | 2008-12-08 | Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810243087XA CN101418559B (en) | 2008-12-08 | 2008-12-08 | Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101418559A CN101418559A (en) | 2009-04-29 |
| CN101418559B true CN101418559B (en) | 2010-06-23 |
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| CN200810243087XA Active CN101418559B (en) | 2008-12-08 | 2008-12-08 | Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079036B (en) * | 2011-01-10 | 2012-07-04 | 福建南电股份有限公司 | Method for machining bulb tubular turbine connecting plate |
| CN112922765B (en) * | 2021-04-13 | 2022-06-21 | 哈尔滨电机厂有限责任公司 | Manufacturing process method of split runner of large-scale impulse turbine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797779B1 (en) | 2006-11-22 | 2008-01-24 | 주식회사 삼안 | Fish way of turbine structure and gate structure for tidal power plant |
| CN101196000A (en) * | 2008-01-07 | 2008-06-11 | 四川东风电机厂有限公司 | Installing method for bulb through-flow turbine |
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2008
- 2008-12-08 CN CN200810243087XA patent/CN101418559B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100797779B1 (en) | 2006-11-22 | 2008-01-24 | 주식회사 삼안 | Fish way of turbine structure and gate structure for tidal power plant |
| CN101196000A (en) * | 2008-01-07 | 2008-06-11 | 四川东风电机厂有限公司 | Installing method for bulb through-flow turbine |
Non-Patent Citations (2)
| Title |
|---|
| 余德军.贵港水电站灯泡贯流式机组结构特点及安装工艺.红水河19 4.2000,19(4),54-58. |
| 余德军.贵港水电站灯泡贯流式机组结构特点及安装工艺.红水河19 4.2000,19(4),54-58. * |
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| CN101418559A (en) | 2009-04-29 |
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