CN102296577B - Embedding technology of volute combination of large hydroelectric generating set - Google Patents
Embedding technology of volute combination of large hydroelectric generating set Download PDFInfo
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- CN102296577B CN102296577B CN201110139306A CN201110139306A CN102296577B CN 102296577 B CN102296577 B CN 102296577B CN 201110139306 A CN201110139306 A CN 201110139306A CN 201110139306 A CN201110139306 A CN 201110139306A CN 102296577 B CN102296577 B CN 102296577B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/186—Spiral or volute casings
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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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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an embedding method of the volute combination of a large hydroelectric generating set. In the technology, cushion layers with modulus of elasticity being 2.5MPa is placed on a volute outer surface in a range from downward 10 DEG to upward 150 DEG by taking a unit installation elevation as a reference on a vertical surface along the clockwise direction of 0-135 DEG of a volute inlet linear section and a volute plane connected with the volute inlet linear section, and the thickness of each of the cushion layers is 1-3cm; then concretes are poured at the periphery of a volute. According to the invention, the defects that the integral rigidity of the existing unit supporting system is poor, the operation of the unit is unstable and a plant vibrates seriously due to the overlarge deformation and serious concrete cracking in the existing unit supporting structure are avoided, the stress balance of the unit supporting system is ensured in a proper bearing manner, and the unit vibration is solved. The technology is completely suitable for the asymmetrical characteristics of the steel volute structure, ensures the rigidity of the unit supporting system and the safety of the plant structure, and has the advantages of simple construction process, short construction period, remarkable economic benefit, safety, stability and high efficiency.
Description
Technical field
The invention belongs to the hydraulic power project technical field, relate to the power station development & construction, relate in particular to the method for embedding of large-scale mixed hydraulic generator unit spiral case.
Background technology
Along with the lasting exploitation of the western large-scale hydroelectric project of China, hydraulic generator unit single-machine capacity constantly increases, and has met or exceeded the 700MW rank.Can unit safety, stable operation, except that the design of unit self, manufacturing, installation quality, also has many external factor.Hydraulic generator unit steel spiral case and peripheral concrete co-ordinative construction are the important support systems of unit, and the service behaviour of this system of spiral case burying technology decision is directly connected to set steady operation and mill construction safety, is one of power station key technology.Because spiral case is buried key technology underground and failed effectively to solve, or cause the unit can't stable operation, or make structure produce vibrating fatigue to destroy, jeopardize power plant safety, lesson is at home and abroad all arranged.
Before the Three Gorges Projects, at home and abroad in the engineering practice, power station mixed-flow wheel generator spiral case is buried underground and is used more have pressurize, bed course, three kinds of technology of direct-burried, is specially:
The pressurize method for embedding is after steel spiral case installs, and adopts silently to reach import and the outlet that spiral case is sealed in joint ring 12 measures such as grade temporarily, and water-filling and be pressurized to setting value in spiral case is consulted the present invention and attached illustrated in figures 1 and 2; Under the head state that keep-ups pressure, build peripheral concrete; After treating that concrete reaches certain intensity, release is removed and is silently reached joint ring again, and spiral case is got back to reset condition by expansion; And form primary clearance between the peripheral concrete, with reasonable adjusting run time organization stress.Its key is the selection of water-filling pressurize head.When spiral case is lower than pressurize head when operation, and the gap between the concrete will exist, and spiral case will be born water pressure separately, cause the spiral case vibration excessive, be difficult to guarantee the set steady operation; When being higher than the operation of pressurize head, be close to concrete after spiral case expands, bear internal force pressure and pressure fluctuation meter jointly; But be equipped with silently and joint ring 12 because the construction period spiral case is imported and exported, with the fringe conditions of runtime difference arranged, to make the malformation of runtime and stress state comparatively complicated, need specialized in this in the design.As far as large-scale power station; Also there are problems such as construction sequence is complicated, straight line is long in time limit, construction investment is bigger in the pressurize method for embedding; Influence to underground power station is more outstanding; Existing increases very unfavorable factor such as factory building span, excavation bodily form complicacy, the increasing of supporting difficulty, difficulty of construction is strengthened, the influence technique economy.
The bed course method for embedding is after steel spiral case installs, and semicircle is laid cushion course on its outer surface, builds peripheral concrete then, and the structural stress state when utilizing bed course to regulate operation is consulted accompanying drawing 3 of the present invention with shown in Figure 4.Bed course method for embedding key is to confirm thickness, rigidity and the material property of bed course.During unit operation, the spiral case water-filling expands, and bed course is compressed, and through bed course a part of internal water pressure is reached the peripheral concrete structure, transmits pressure and depends on cushion thickness and material property.Because it is relatively large that bed course lays scope, concrete to the effect of contraction of spiral case relatively a little less than, both distortion have relative slippage, cause the co-ordinative construction integral rigidity to reduce, and the antifatigue of unit vibration and spiral case is had adverse effect, need conscientiously research.
Directly buried technology is after steel spiral case installs, and directly builds peripheral concrete, neither fills internal water pressure; Do not establish bed course yet, consult accompanying drawing 5 of the present invention and (movable guide vane 15 is set, regulates flow) shown in Figure 6 in the hydraulic turbine through the hydraulic turbine; Spiral case and peripheral concrete form integral body and unite force structure fully during operation, can't give full play to the carrying effect of steel spiral case, and concrete bears bigger internal water pressure; Serious cracking causes the integral rigidity of factory building braced structures and resistance to shock to descend, because the asymmetric bodily form on spiral case plane; Cause the vertical deformation difference on unit lower bearing bracket basis bigger, directly influence the set steady operation, in large-scale unit, even do not set up; Maybe must adopt various measures, like comprehensive raising strength grade of concrete, the configuration of increase reinforcing bar etc., Technological Economy property is relatively poor.
Above-mentioned three kinds of method for embedding have different action principles, need different construction technology, construction sequence and construction period, and investment is also had any different.Though all according to bearing whole internal force pressure design, stress state is different during its operation, and is also different with the unit operation Effect on Performance to braced structures system integral rigidity for spiral case.
Before the Three Gorges Projects, bury underground, pressurize engineering instance is abroad only arranged, and domesticly still do not have a case history for 700MW level Large Hydroelectric Set spiral case.China has gone into operation the power station that is lower than the large-scale mixed hydrogenerator of 700MW has been installed; Unit vibration and operation stability problem in various degree all appearred in Ru Yantan, Li Jiaxia, two beaches, the last five small stream, separated river rock etc.; Influence the performance and the economic benefit of power station power; Even accident such as cause that turbine blade fracture, draft tube tube wall are torn, because the judder of unit causes fabric structure such as factory building stronger vibration takes place perhaps, jeopardize the safety in whole power station.
Summary of the invention
The object of the invention will improve large-scale mixed hydraulic generator unit steel spiral case and peripheral concrete co-ordinative construction stress exactly, reduces malformation, keeps structural entity rigidity, reduces unit vibration, guarantees hydraulic generator unit safe and stable operation; Simultaneously, simplify working process, convenient construction, raising work efficiency, practice thrift investment.For this reason, research has been invented the combination of unit spiral case and has been buried new technology underground.
The object of the invention reaches through following measure: hydraulic generator unit spiral case combination method for embedding is at the spiral case inlet straightway and what link to each other with this straightway is that benchmark lays the bed course that modulus of elasticity is 2.5MPa for downward 10 ° to the 150 ° of scope spiral case external surfaces that make progress along with unit elevation being installed on 0 °～135 ° of spiral case plane clockwise directions, the spiral case facade; The thickness of bed course is 1cm～3cm, and then builds the steel spiral case peripheral concrete.
Horizontal projection is not laid bed course apart from 1m～3m scope between said steel spiral case and the pit liner, directly concreting.
Above-mentioned concrete of directly building is C40 concrete and above strong concrete below the steel spiral case top.
Above-mentioned bed course is that modulus of elasticity is polyethylene from high pressure process closed-cell foam plate or the polyurethane cork of 2.5MPa.
It is that the downward 10 ° of certain angle scopes (first half) that extremely make progress of benchmark are laid bed course that the present invention installs elevation at spiral case inlet straightway, the clockwise direction certain limit along the spiral case plane that links to each other with straightway and facade with unit.Because above-mentioned position spiral case diameter is big, HD and HD
2Be worth higherly relatively, and peripheral concrete is weak, lays certain thickness bed course in certain limit; Can adjust the CBR of steel spiral case and peripheral concrete, the bed course maximum compressibility is controlled at 25%～30% during the operation of spiral case water-filling, and concrete not exclusively limits the water-filling distortion of steel spiral case; Can give full play to the supporting capacity of volute plate, reduce the interior water head that concrete is born, make distress in concrete carry out width and be controlled in the allowed band; And avoid producing the penetrability crack, and guarantee co-ordinative construction support system integral rigidity, reduce amount of reinforcement simultaneously; Convenient construction is practiced thrift investment.
Unit steel spiral case Lower Half of the present invention, seat ring top rebound rigidity are not laid bed course than large part and the less relatively position of spiral case diameter; Direct concreting; Steel spiral case is directly contacted with concrete; Make full use of the effect of contraction of concrete, improve seat ring and rebound stress, spiral case that causes because of pulsating water pressure when reducing to move and the vibration of unit reaction steel spiral case; Guarantee the integral rigidity of unit seat ring, steel spiral case and peripheral concrete associating braced structures, strengthened the safety and the stability of unit operation.
Unit spiral case combination method for embedding of the present invention has been directed against spiral case diameter asymmetry characteristics; Suitably loosen at this position of loosening, the position of this constraint reliably retrains, and reduces the vibration of unit and factory building; Effectively being controlled at lower bearing bracket basis under the effect of water pressure lifts on inhomogeneous; Make structure stress little, distortion evenly more helps the long-term safety of unit, stable operation.Unit spiral case combination method for embedding has merged the advantage of " bed course " and " direct-burried " technology; The defective of having evaded " bed course " and " direct-burried " technology; Comprehensive advantages such as construction sequence is simple, duration weak point, reduced investment are arranged with the pressurize compared with techniques, can satisfy the large hydropower station spiral case and bury demand underground.
The present invention is applicable to that the spiral case of all mixed-flow wheel generating sets buries underground, and to Large Hydroelectric Set, especially the underground power station Large Hydroelectric Set has obvious technical advantage, and can simplify construction sequence, accelerating construction progress, saving construction investment.
Description of drawings
Fig. 1 is a steel spiral case pressurize method for embedding sketch map;
Fig. 2 is that the I-I of Fig. 1 is to the view structure sketch map;
Fig. 3 is a steel spiral case bed course method for embedding sketch map;
Fig. 4 is that the I-I of Fig. 3 is to the view structure sketch map;
Fig. 5 is the direct method for embedding sketch map of steel spiral case;
Fig. 6 is that the I-I of Fig. 5 is to the view structure sketch map;
Fig. 7 is steel spiral case combination method for embedding sketch map of the present invention;
Fig. 8 is that the I-I of Fig. 7 is to the view structure sketch map;
Fig. 9 is a hydraulic generator unit integrated support architectural schematic;
Among the figure: 1, steel spiral case, 2, the spiral case inlet straightway, 3, elastic layer, 4, the unit center line; 5, unit is installed elevation, and 6, the unit seat ring, 7, external wrapping concrete, 8, the hydraulic generator unit; 9, pit liner, 10, strong concrete, 11, silently, 12, joint ring; 13, draft tube, 14, fixed guide vane, 15, movable guide vane.
The specific embodiment
Describe hydraulic generator unit spiral case combination method for embedding of the present invention in detail below in conjunction with accompanying drawing and specific embodiment, but they do not constitute to qualification of the present invention.
Fig. 1～Fig. 6 describes in background technology, does not give unnecessary details at this.
Consult Fig. 7 and shown in Figure 8; Hydraulic generator unit spiral case combination method for embedding of the present invention; Among Fig. 7 (for the ease of analyzing; Marked unit center line 4), at the spiral case inlet straightway 2 of steel spiral case 1 and the clockwise direction angle θ along the spiral case plane (consulting shown in Figure 7) that links to each other with this spiral case inlet straightway 2, the span of θ is 0 °～135 °; Reaching and with unit elevation 5 being installed on the spiral case facade is the angle Ω (consulting shown in Figure 8) of benchmark; The span of Ω is-10 °～150 °, and laying depth is that 1cm～3cm, modulus of elasticity are the bed course of 2.5Mpa on the steel spiral case external surface of this scope, builds peripheral concrete 7 at the external surface of steel spiral case 1 then.
The pit liner 9 of spiral case combination method for embedding is directly built strong concrete 10 with the external surface of steel spiral case 1 at a distance of 1m～3m horizontal range zone, and the elastic layer 3 that is adopted is polyethylene from high pressure process closed-cell foam plate or the polyurethane cork of 2.5MPa for modulus of elasticity.
Specific embodiment 1: formula power station behind the key water control project dam, Three Gorges (unit 700MW, totally 26)
Three Gorges Right Bank Hydropower Station 15
#The machine steel spiral case adopts the combination method for embedding; In design process, set up support structure system (containing steel spiral case 1, seat ring 6, foundation ditch back boxing 9 and the draft tube 13) 3 d structure model of hydraulic generator unit 8; Through three dimensional non-linear calculating, ratio is simulation model test in 1: 12 and three-dimensional Cable Power Computation analysis; The material of bed course 3, level angle θ and the angle Ω that bed course 3 is laid at steel spiral case 1 external surface have been confirmed; And high-strength concrete 10 builds the zone, guarantees to lift on distress in concrete, lower bearing bracket basis are relatively the control criterion that vibration reaction that each item index such as displacement and each position produce all can be satisfied hydraulic generator unit 8 safe and stable operations.Its data such as following table:
In the work progress; The first half lays bed course 3 in unit steel spiral case 1 straightway reaches the 45 ° of scopes of spiral case plane clockwise direction that link to each other with straightway; It is the polyethylene from high pressure process closed-cell foam plate (low-foaming) of 2.5MPa that bed course 3 adopts thick 30mm, modulus of elasticity; Bed course 3 lays that end distance pit liner 9 horizontal ranges are 2.5m～3m on the scope, and the lower end encases steel spiral case 1 and at unit the weakest concrete in elevation 5 places is installed, and is controlled at and installs near 10 ° of elevation 5 belows; Bed course 3 is not laid in 2.5m between pit liner 9 and the steel spiral case 1～3m zone, directly builds strong concrete 10, guarantees the effect of contraction of concrete structure to steel spiral case 1 and unit seat ring 6; At this moment, the about 9mm of spiral case maximum radial distortion, bed course 3 compression ratios are 30%.The all direct concreting of steel spiral case 1 remainder through configuration reinforcement, is rationally controlled crack developing width.
Power station, Three Gorges 15
#Unit can safe and stable operation through various head operating modes operation back proof, and the vibration of unit, throw, thrust bearing shoe valve temperature are normally.Through unit operation situation and monitoring materials, 15
#Lift each association such as displacement on aperture between volute plate stress, reinforcement stresses, external wrapping concrete 7 each position stress, spiral case and the external wrapping concrete 7 of unit when 156m, 172.7m water level, the lower bearing bracket all in the safe range value, can guarantee unit can long-term safety, stable, efficient operation.
In addition, implement the unit of other method for embedding with Three Gorges and compare, the combination method for embedding reduces 495.6 ten thousand yuan of direct investments than pressurize method for embedding separate unit machine; Shorten 1.5 months straight line durations; Actual multiple electric weight 2.58 hundred million KWh bring benefits 6,450 ten thousand yuan, and economic benefit very significantly.
In the design of right bank underground power station, Three Gorges; Underground chamber is huge, thin, the large-scale unfavorable block of country rock thickness is grown; If adopt the pressurize method for embedding; Pressurize silently 11 layouts will make the factory building span further enlarge, and directly jeopardize the surrounding rock of chamber safety and stability, and design considers to be employed in the combination method for embedding of Right Bank Hydropower Station successful Application.
Specific embodiment 2: Hydropower Station Underground (unit 700MW, totally 18) is crossed in the small stream Lip river
Small stream Luo Du power station is a underground power house, for arranging silently 11, need be in factory building upstream side local excavation a triangle cave dwelling, thereby enlarge local excavation's span of factory building, cause excavating bodily form complicacy, be unfavorable for support reinforcement, and silently lifting difficulty.
Bury the comparative analysis of scheme underground through the small stream Lip river being crossed Hydropower Station Underground hydraulic generator unit steel spiral case difference; Calculation and Study at aspects such as volute plate stress, concrete stress, cracking situation, reinforcement stresses, vibratory response and analysiss of fatigue; Confirm that reaching the 135 ° of scopes of spiral case plane clockwise direction that link to each other with this straightway at steel spiral case 1 spiral case inlet straightway 2 lays bed course 3; Bed course 3 thick 20mm, modulus of elasticity is 2.5MPa, lays that end distance pit liner 9 horizontal ranges are 1.5m on the scope; The lower end encases steel spiral case 1 and at unit the weakest concrete in elevation 5 places is installed, and is controlled at and installs near 10 ° of elevation 5 belows; Bed course 3 is not laid in the 1.5m zone between pit liner 9 and the steel spiral case 1, directly builds strong concrete 10, guarantees the effect of contraction of concrete structure to steel spiral case 1 and unit seat ring 6; The about 5.7mm of steel spiral case 1 maximum radial distortion under the operation condition, bed course 3 compression ratios are 29%.The all direct concreting of steel spiral case 1 remainder through the reasonable disposition reinforcing bar, can guarantee that the basic free from flaw of concrete takes place.
Through checking computations, the small stream Lip river is crossed Hydropower Station Underground steel spiral case combination method for embedding scheme and had both been satisfied control criterions such as concrete structural strength, rigidity, limit split, and can give full play to the supporting capacity of steel spiral case 1 and peripheral concrete 7 co-ordinative constructions again.
Explanation of nouns in the manual:
Spiral case: the abbreviation of scroll casing type flume, for using the most general a kind of flume in the reaction turbine, its effect is that current are evenly imported seat ring from circumferencial direction.Divide two kinds of metal spiral case and concrete spiral casings.
Bed course: modulus of elasticity can adapt to the spiral case distortion much smaller than the elastic material board of concrete and steel.
HD value: the product of internal diameter of the pipeline and head, sign pressure pipeline scale and technical difficulty, major control support structure system intensity.
HD
2Value: the product of internal diameter of the pipeline square value and head, sign pressure pipeline scale and technical difficulty, the distortion of major control support structure system.
The unit seat ring: form by two annular elements and some fixed guide vanes 14, constitute from the spiral case to the distributor between the structure member of passage.In the mixed-flow unit, the unit seat ring also plays a part to support and bear top machine pier and unit weight, spiral case internal water pressure and hydrogenerator axial hydraulic thrust etc., and they are delivered to the factory building concrete foundation.
Water guide shaft supporting basis: bear the radial load and the axial force that transmit by the unit macro-axis, fixedly the parts of unit axial location.
Claims (3)
1. the Large Hydroelectric Set spiral case makes up method for embedding; It is characterized in that: at the spiral case inlet straightway and what link to each other with this straightway is that benchmark lays the bed course that modulus of elasticity is 2.5MPa for downward 10 ° to the 150 ° of scope spiral case external surfaces that make progress along with unit elevation being installed on 0 °～135 ° of spiral case plane clockwise directions, the spiral case facade; The thickness of bed course is 1cm～3cm; And then build the steel spiral case peripheral concrete, horizontal projection is apart from 1m～direct concreting of 3m scope between said steel spiral case and the pit liner.
2. Large Hydroelectric Set spiral case combination method for embedding according to claim 1, it is characterized in that: said concrete of directly building is below the steel spiral case top, and said concrete is C40 concrete and above strong concrete.
3. Large Hydroelectric Set spiral case combination method for embedding according to claim 1 and 2, it is characterized in that: said bed course is that modulus of elasticity is polyethylene from high pressure process closed-cell foam plate or the polyurethane cork of 2.5MPa.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139306A CN102296577B (en) | 2011-05-27 | 2011-05-27 | Embedding technology of volute combination of large hydroelectric generating set |
| PCT/CN2012/073967 WO2012163184A1 (en) | 2011-05-27 | 2012-04-13 | Combined embedding method for steel volute of large hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139306A CN102296577B (en) | 2011-05-27 | 2011-05-27 | Embedding technology of volute combination of large hydroelectric generating set |
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| Publication Number | Publication Date |
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| CN102296577A CN102296577A (en) | 2011-12-28 |
| CN102296577B true CN102296577B (en) | 2012-07-04 |
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| WO (1) | WO2012163184A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102296577B (en) * | 2011-05-27 | 2012-07-04 | 长江勘测规划设计研究有限责任公司 | Embedding technology of volute combination of large hydroelectric generating set |
| CN102758425B (en) * | 2012-07-23 | 2014-06-11 | 天津大学 | Preloading filling spiral case preloaded seam constructing device of hydropower station and implementing method thereof |
| CN102797244B (en) * | 2012-08-24 | 2014-09-03 | 中水北方勘测设计研究有限责任公司 | Heat preservation and pressure maintenance system for water turbine volute concrete pouring process |
| CN102912774B (en) * | 2012-11-21 | 2015-05-06 | 长江勘测规划设计研究有限责任公司 | Method for preserving heat and maintaining pressure of volute of hydropower station |
| CN104120901B (en) * | 2014-08-04 | 2017-05-10 | 中国电建集团成都勘测设计研究院有限公司 | Hydropower plant of staggered layer type water turbine layer structure |
| CN104234912B (en) * | 2014-09-17 | 2017-02-15 | 中国电建集团西北勘测设计研究院有限公司 | Water turbine compression gap volute structure |
| CN104389717B (en) * | 2014-09-17 | 2016-06-22 | 中国电建集团西北勘测设计研究院有限公司 | A kind of method determining Hydropower Unit worm frame compression clearance |
| CN104452700B (en) * | 2014-11-04 | 2016-01-06 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of side turn over for diversion tunnel enter hole silently structure |
| CN104988945B (en) * | 2015-05-25 | 2017-04-05 | 国家电网公司 | Hydroenergy storage station unit installation method and temporary support structure |
| CN109185010B (en) * | 2018-09-19 | 2020-04-10 | 武汉大学 | Hydropower station volute embedding method based on thermal effect structure deformation principle |
| CN109505290A (en) * | 2018-11-29 | 2019-03-22 | 中国电建集团成都勘测设计研究院有限公司 | Prestressed concrete volute structure |
| CN112065631A (en) * | 2020-08-17 | 2020-12-11 | 安徽金寨抽水蓄能有限公司 | Volute layer construction process |
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| JPS5810581B2 (en) * | 1976-08-30 | 1983-02-26 | 株式会社日立製作所 | How to install speed ring |
| JPS60240879A (en) * | 1984-05-15 | 1985-11-29 | Toshiba Corp | Installation of turbine |
| FR2593246B1 (en) * | 1986-01-20 | 1988-03-25 | Bergeron Sa | PROCESS FOR PRODUCING THE INTERFACES BETWEEN THE CONCRETE ELEMENTS AND THE MECHANICAL ELEMENTS OF A CONCRETE VOLUME PUMP AND PUMP OBTAINED BY THIS PROCESS |
| DE3635203C1 (en) * | 1986-10-16 | 1988-03-24 | Voith Gmbh J M | Guide vane bearing for water turbines |
| SU1569418A1 (en) * | 1988-07-14 | 1990-06-07 | Всесоюзный Специализированный Трест По Монтажу Гидросилового Оборудования "Спецгидроэнергомонтаж" | Method of mounting vertical hydraulic turbine embedded parts |
| JP2002276525A (en) * | 2001-03-19 | 2002-09-25 | Kansai Electric Power Co Inc:The | Hydraulic machinery, and upper cover level adjusting method |
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| CN201074596Y (en) * | 2007-06-27 | 2008-06-18 | 上海阿波罗机械制造有限公司 | Concrete spiral casing sea water recirculating pump |
| CN201495533U (en) * | 2009-07-06 | 2010-06-02 | 西安林产化学工厂 | Force-transferring waterproof gasket layer for hydropower station |
| CA2717581A1 (en) * | 2010-10-12 | 2011-01-18 | Quantum Supply Ltd. | Methods and apparatus for dissipating hydrostatic head in hydroelectric power generating stations |
| CN102296577B (en) * | 2011-05-27 | 2012-07-04 | 长江勘测规划设计研究有限责任公司 | Embedding technology of volute combination of large hydroelectric generating set |
-
2011
- 2011-05-27 CN CN201110139306A patent/CN102296577B/en active Active
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2012
- 2012-04-13 WO PCT/CN2012/073967 patent/WO2012163184A1/en active Application Filing
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| WO2012163184A1 (en) | 2012-12-06 |
| CN102296577A (en) | 2011-12-28 |
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