CN203174570U - Shaft type water inlet/outlet structure for pumped-storage power station - Google Patents
Shaft type water inlet/outlet structure for pumped-storage power station Download PDFInfo
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- CN203174570U CN203174570U CN2013201826912U CN201320182691U CN203174570U CN 203174570 U CN203174570 U CN 203174570U CN 2013201826912 U CN2013201826912 U CN 2013201826912U CN 201320182691 U CN201320182691 U CN 201320182691U CN 203174570 U CN203174570 U CN 203174570U
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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
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Abstract
The utility model discloses a shaft type water inlet/outlet structure for a pumped-storage power station. The water inlet/outlet structure comprises a cover plate, a shunt pier and a vertical shaft, wherein the vertical shaft is composed of a vertical diffusion section, a vertical section, a turning section and a transition section sequentially, and the diameter of the cover plate is 1.1-1.5 times of that of an diffusion end of the vertical diffusion section; the length of the vertical section is larger than a vertical section hole diameter, the turning section is in a spindle shape which is expanded firstly and then contacted, the largest cross section diameter of the spindle is 1.3-1.4 times of the vertical section hole diameter, the radius of the turning section is more than 2 times of the vertical section hole diameter, and the diffusion ratio of the transition section is 1: 11-1: 13. According to the shaft type water inlet/outlet structure, through contrast of hydraulic model tests with numerical simulation calculation results, numerical simulation calculation can well simulate hydraulics problems of shaft type water inlets/outlets and be applied to scheme comparison and optimization. The shaft type water inlet/outlet structure is good in hydraulic characteristic through verification of model tests, numerical simulation and actual projects and has important reference functions and guiding significance for shaft type water inlet/outlet design work of pumped-storage power stations in future, social and economic benefits are remarkable, and popularization and application values are provided.
Description
Technical field
The utility model relates to hydraulic structure, specifically, is that a kind of pumped storage power plant well formula is advanced/the delivery port structure.
Background technology
Pumped storage power plant advances/and delivery port is to be built in the engineering services that are used for the control current in the upper and lower reservoir, and its function is generating or the water yield of drawing water according to power system load requirement reasonable distribution Hydraulic Power Unit, guarantees the power plant safety economical operation.Because pumped storage power plant has (hydraulic turbine operating mode) the two kinds of operation conditions that draw water (pump operating condition) and generate electricity, current are two-way flows, water inlet and the delivery port of pumped storage power plant unite two into one, be water inlet to upper storage reservoir when the generating operation mode, it is delivery port when pumping operation mode, vice versa, so be referred to as into/delivery port.
At present domestic built pumped storage power plant advance/delivery port often is arranged horizontally, the advancing of common this form/delivery port arranges that to be subjected to the orographic condition restriction bigger, the open excavation amount is bigger.
The well formula advances/and delivery port can be arranged in any position of reservoir bottom, flexible arrangement, require relatively low to the landform geological conditions simultaneously, the open excavation amount is little, structure is generally circular cross section, and head loss is little, and structure stress is simple, be beneficial to engineering construction and structural safety, can solve preferably into/delivery port crosses the dam problem.
As one of key technology of pumped storage power plant, the well formula advances/and delivery port all obtained application in the big-and-middle-sized pumped storage power plant at home and abroad: and the natural pond of the big room of the Ka Muluo of Britain, France, the Ahmedabad small stream (Bad Creek) of the U.S., Cabbeen small stream (Cabin Creek), Ma Dilang (Muddy Run), Rocky Mountains (Rocky mountain), Japan is former etc.; Domestic siron pond (moving), Mashan (can grind and finish), Liyang (building).
The utility model content
Technical problem to be solved in the utility model is to provide a kind of pumped storage power plant well formula of design processes simplified to advance/the delivery port structure.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of pumped storage power plant well formula is advanced/the delivery port structure, comprise cover plate, baffle pier and vertical shaft, vertical shaft is made up of vertical diffuser, vertical section, turnaround section and transition section successively, and the diameter of cover plate is 1.1～1.5 times of vertical diffuser diffusion end diameter; Vertically the length of section is greater than 1 times footpath, vertical section hole; Turnaround section adopts the spindle bodily form that expands after-contraction earlier, and the maximum cross section diameter of spindle is 1.3～1.4 times footpath, vertical section hole, and the turnaround section radius is greater than 2 times footpath, vertical section hole; The transition section diffusion ratio is got 1:11～1:13.
Described vertical diffuser adopts 1/4 oval curve.
By cover plate and baffle pier will advance/delivery port is divided into 8 apertures, is radial arrangement, trashrack is arranged in each exit position, aperture, arranges that bank and cover plate center divide flow cone at the bottom of the aperture, is conducive to all negative flow velocitys of even elimination of aperture velocity flow profile.
The beneficial effects of the utility model are: the utility model provides a kind of and has advanced/the delivery port structure through the good well formula of the hydraulic characteristic(s) of model testing, numerical simulation and actual engineering verification, to pumped storage power plant well formula from now on advance/the delivery port design work has important reference function and directive significance, economic results in society are remarkable, have application value.
Description of drawings
Fig. 1 is that pumped storage power plant well formula of the present utility model is advanced/the delivery port structural representation.
Fig. 2 is that pumped storage power plant well formula of the present utility model is advanced/vertical view of delivery port structure.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
As shown in Figure 1, 2, pumped storage power plant well formula of the present utility model is advanced/the delivery port structure, comprise cover plate 1, baffle pier 2 and vertical shaft, vertical shaft is made up of vertical diffuser 4, vertical section 5, turnaround section 6 and transition section 7 successively, and the diameter of cover plate 1 is 1.1～1.5 times of vertical diffuser 4 diffusion end diameters; Vertically the length of section 5 is greater than 1 times footpath, vertical section hole; Turnaround section 6 adopts the spindle bodily form that expands after-contraction earlier, and the maximum cross section diameter of spindle is 1.3～1.4 times footpath, vertical section hole, and turnaround section 6 radiuses are greater than 2 times footpath, vertical section 5 holes; Transition section 7 diffusion ratios are got 1:11～1:13.
Described vertical diffuser 4 adopts 1/4 oval curve.
By cover plate 1 and baffle pier 2 will advance/delivery port is divided into 8 apertures, is radial arrangement, trashrack 3 is arranged in each exit position, aperture, arranges that bank 8 and cover plate center divide flow cone 9 at the bottom of the aperture, is conducive to all negative flow velocitys of even elimination of aperture velocity flow profile.
The hydraulic characteristic of the advancing of pumped storage power plant of the present utility model/delivery port structure satisfies following the requirement:
A. head loss is little when current pass in and out;
B. current evenly enter runner by around the aperture during influent stream, and each aperture flow is more or less the same in 10%; Assignment of traffic is even when different water level, does not have harmful air-breathing whirlpool;
The aperture current evenly spread when c. going out to flow, and each aperture flow is more or less the same in 10%; Exit velocity evenly distributes in each aperture, and each aperture flow velocity nonuniformity coefficient (crossing grid Peak Flow Rate and the ratio of crossing the grid mean flow rate) should be not more than 2, should be less than 1.6;
D. not negative flow velocity exists or bears the scope control of flow velocity district in minimum in the scope of aperture.
The utility model by hydraulic model test and numerical Analysis, in conjunction with engineering reality, is optimized and is advanced/the delivery port body structure on the basis of the domestic and international related data of Collection and analysis, determines final bodily form physical dimension.And according to the comparative analysis of prototype measurement data, verified that further well formula of the present utility model advances/correctness of the build of delivery port.
With certain pumped storage power plant upper storage reservoir well formula advance/delivery port is example, carried out the model testing checking: certain pumped storage power plant upper storage reservoir well formula is advanced/delivery port, cover plate diameter 22.30m, vertically diameter 16.50m is held in the diffuser diffusion, and vertically diffuser adopts 1/4 oval curve, vertical section hole footpath 5.2m, vertical segment length 12.38m, turnaround section adopts the spindle bodily form that expands after-contraction earlier, and the maximum cross section diameter of spindle is 7.20m, turnaround section radius 11.50m, transition section diffusion ratio are 1:13.According to model test results, under pumping operation mode, forward flow velocity average value ranges is 0.574m/s～0.991m/s, and there is reverse flow base plate part, aperture, but numerical value is less, and influence basin is less, and each aperture assignment of traffic is between 9.6%～15.1%; Under generating operation mode, section average speed is 0.551m/s～0.653m/s, and each aperture assignment of traffic under each operation condition, harmful attraction type whirlpool all do not occur between 10.2%～14.0%.Through model testing checking, this pumped storage power plant upper storage reservoir well formula advances/and delivery port satisfies the hydraulic characteristic(s) requirement.
Utilize the numerical simulation calculation of two and three dimensions simultaneously, to advance/the delivery port bodily form studies, and by and the contrast of physical experiments conclusion, can think numerical simulation calculation preferably the simulation well formula advance/knowledge question of water conservancy of delivery port, can be used for scheme comparison and optimization.On this basis, by numerical simulation calculation, to advance/bodily form of delivery port carried out deep research and exploration, proposing the well formula advances/bodily form basic design principles that HYDRODYNAMIC CONDITION RELATING TO requires and the zone of reasonableness of each parameter are satisfied in each position of delivery port.
(4) major technique achievement of the present utility model:
1. by the well formula being advanced/the delivery port Study on Hydraulic Characteristics, advance in the well formula/during the design of the delivery port bodily form, controlling grid current speed during orifice outflow is that 0.8～1.0m is suitable, the flow velocity nonuniformity coefficient that exports under the pumping operation mode should be less than 2.0.
2. the well formula advance/the delivery port each several part is to the influence of hydraulic characteristic(s): influencing the well formula advances/principal element of delivery port head loss is the height in the size of cover plate, aperture and diffusion, vertically diffusion, the vertically length, the turning radius of turnaround section of section of diffuser.Add the large cover size, reduce the diffusion of vertical diffuser, the horizontal proliferation degree that reduces aperture height and reduce aperture width all can be reduced in the head loss under the pumping operation mode, and can increase the head loss under generating operation mode simultaneously; No matter in generating still under the pumping operation mode, the well formula advances/and that the pressure distribution of delivery port is influenced by the bodily form is very little; The generation of aperture base plate vicinity reverse flow is that vertical diffuser current separate, current take off wall when the vertical motion steering horizontal moves and the horizontal proliferation comprehensive function of flowing along the aperture or the effect that acts on separately under pumping operation mode; Reduce aperture height, reduce the horizontal proliferation of aperture width and enlarge cover plate all can play good effect to reducing aperture base plate vicinity reverse flow; Shrink vertical diffuser curve and can eliminate the interior flow separation of vertical shaft diffuser with the reduction aperture height.
3. bodily form design principles: produce harmful air-breathing whirlpool when preventing influent stream, the aperture velocity flow profile when being conducive to stream simultaneously arranges that bank and cover plate center divide flow cone at the bottom of cover plate, the aperture.
The diameter of cover plate should be got 1.1～1.5 times of vertical diffuser diffusion end diameter; Vertically diffuser recommends to adopt 1/4 oval curve; Vertically the length of section is greater than 1 times footpath, vertical section hole; Turnaround section recommend to adopt the spindle bodily form that expands after-contraction earlier, and the maximum cross section diameter of spindle is 1.3～1.4 times footpath, vertical section hole, and the turnaround section radius is greater than 2 times footpath, vertical section hole; The transition section diffusion ratio is got 1:11～1:13.
4. the contrast by hydraulic model test and numerical simulation calculation result, numerical simulation calculation simulation well formula are preferably advanced/knowledge question of water conservancy of delivery port, can be used for scheme comparison and optimization.
5. certain pumped storage power plant adopts well formula of the present utility model to advance/the delivery port structure, adapted to engineering topographic and geologic condition preferably, simplified/delivery port is connected with leakage preventing structure, and has good hydraulic characteristic(s), for the safe operation of engineering provides assurance.
Above-described embodiment only is used for explanation technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be equal variation or the modification that spirit that all the utility model disclose is done, still drop in the claim of the present utility model.
Claims (3)
1. a pumped storage power plant well formula is advanced/the delivery port structure, comprise cover plate (1), baffle pier (2) and vertical shaft, it is characterized in that, vertical shaft is made up of vertical diffuser (4), vertical section (5), turnaround section (6) and transition section (7) successively, and the diameter of cover plate (1) is 1.1～1.5 times of vertical diffuser (4) diffusion end diameter; Vertically the length of section (5) is greater than 1 times footpath, vertical section hole; Turnaround section (6) adopts the spindle bodily form that expands after-contraction earlier, and the maximum cross section diameter of spindle is 1.3～1.4 times footpath, vertical section hole, and turnaround section (6) radius is greater than 2 times footpath, vertical section (5) hole; Transition section (7) diffusion ratio is got 1:11～1:13.
2. pumped storage power plant well formula according to claim 1 is advanced/the delivery port structure, it is characterized in that, described vertical diffuser (4) adopts 1/4 oval curve.
3. pumped storage power plant well formula according to claim 1 is advanced/the delivery port structure, it is characterized in that, by cover plate (1) and baffle pier (2) will advance/delivery port is divided into 8 apertures, be radial arrangement, trashrack (3) is arranged in each exit position, aperture, and aperture Di Kan (8) is set and flow cone (9) is divided at the cover plate center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201826912U CN203174570U (en) | 2013-04-12 | 2013-04-12 | Shaft type water inlet/outlet structure for pumped-storage power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013201826912U CN203174570U (en) | 2013-04-12 | 2013-04-12 | Shaft type water inlet/outlet structure for pumped-storage power station |
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| CN203174570U true CN203174570U (en) | 2013-09-04 |
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| CN2013201826912U Expired - Fee Related CN203174570U (en) | 2013-04-12 | 2013-04-12 | Shaft type water inlet/outlet structure for pumped-storage power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205954A (en) * | 2013-04-12 | 2013-07-17 | 中国水电顾问集团北京勘测设计研究院 | Well inlet/outlet structure for pumped storage power stations |
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2013
- 2013-04-12 CN CN2013201826912U patent/CN203174570U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205954A (en) * | 2013-04-12 | 2013-07-17 | 中国水电顾问集团北京勘测设计研究院 | Well inlet/outlet structure for pumped storage power stations |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HYDROCHINA BEIJING ENGINEERING CORPORATION LIMITED Free format text: FORMER NAME: HYDROCHINA BEIJING ENGINEERING CORPORATION Owner name: POWER CHINA CONSTRUCTION GROUP BEIJING SURVEY DESI Free format text: FORMER NAME: HYDROCHINA BEIJING ENGINEERING CORPORATION LIMITED |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100024 Beijing city Chaoyang District, 1 West Street Patentee after: HYDROCHINA BEIJING ENGINEERING Corp.,Ltd. Address before: 100024 Beijing city Chaoyang District, 1 West Street Patentee before: HYDROCHINA BEIJING ENGINEERING Corp. Address after: 100024 Beijing city Chaoyang District, 1 West Street Patentee after: POWERCHINA BEIJING ENGINEERING Corp.,Ltd. Address before: 100024 Beijing city Chaoyang District, 1 West Street Patentee before: HYDROCHINA BEIJING ENGINEERING Corp.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |