CN103898883A - Water diversion system for long-distance water diversion type hydropower station in severe cold region - Google Patents
Water diversion system for long-distance water diversion type hydropower station in severe cold region Download PDFInfo
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- CN103898883A CN103898883A CN201410136056.XA CN201410136056A CN103898883A CN 103898883 A CN103898883 A CN 103898883A CN 201410136056 A CN201410136056 A CN 201410136056A CN 103898883 A CN103898883 A CN 103898883A
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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
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Abstract
The invention discloses a water diversion system for a long-distance water diversion type hydropower station in a severe cold region. The water diversion system comprises a water diversion gate, a water intake gate, an underport gate and a flood discharge underport, wherein the water diversion gate getting water from a reservoir is arranged in the front of a water diversion channel, the water intake gate intakes channel water into a generator unit to generate electricity, the underport gate and the flood discharge underport are used for discharging waste water except water for generation into a downstream river channel, and a plurality of damming gates functioning in controlling water level and maintaining stability of ice sheet are distributed between the water diversion gate and the water intake gate according to certain intervals. The distance between the water intake gate and the adjacent damming gate, the distance between the two adjacent damming gate and the distance between the water intake gate and the adjacent damming gate all range from 4km to 6km. When the water diversion system is applied in winter, ice sheet is formed on the water diversion channel of the hydropower station, operation of the channel with the ice sheet is realized, ice discharge water usage is saved more than that used by a conventional ice transport operation way, more diversion water can be used for electricity generation, utilization rate of water energy is improved, and economic benefits of the hydropower station are increased.
Description
Technical field
The present invention relates to a kind of diversion system, specifically, is the diversion system in long distance water diversion formula power station, a kind of severe cold area.
Background technology
The diversion system in long distance water diversion formula power station generally include be arranged in water-drawing channel top from the water-drawing gate of reservoir water intaking, by channel water introduce the intake gate of generating set generating, by bottom gate and the flood discharge bottom outlet of the abandoning water and leak into downstream river course that meet beyond generating water.Because the distance between water-drawing gate and intake gate is very long, water just can flow to generating set through long time in channel, and water surface directly contacts with cold air for a long time, affected by temperature very large.In severe cold area, in the water-drawing channel in water channeling type power station, will freeze, ice enters the hydraulic turbine can accelerate the wearing and tearing of the hydraulic turbine.When serious, a large amount of ice cubes can stop up water inlet, cause diversion difficulty, and unit, by forced-stopping machine, also can lead to a disaster not in time if processed.
Impact for fear of ice cube on generating, traditional method is to take to sacrifice a part of water yield ice cube is discharged to Channel of Downstream.In the winter time, originally river course to carry out the water yield just less, add the part water yield and be used to arrange ice, this certainly will cause the water yield for generating electricity to reduce, thereby reduces the generated energy in power station, reduces its power benefit.
Summary of the invention
Technical problem to be solved by this invention is, provides one to realize the channel lid operation of freezing, and can make the diversion system for severe cold area long distance water diversion formula power station of more diversion for generating electricity.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of diversion system for long distance water diversion formula power station, severe cold area, comprise be arranged in water-drawing channel top from the water-drawing gate of reservoir water intaking, by channel water introduce the intake gate of generating set generating, by bottom gate and the flood discharge bottom outlet of the abandoning water and leak into downstream river course that meet beyond generating water, on the water-drawing channel between water-drawing gate and intake gate according to the multiple locks of choking water of controlling water level, maintaining ice sheet stabilization that play of certain pitch arrangement.
Described water-drawing gate and the adjacent spacing between lock, adjacent two of choking water are choked water spacing between lock, intake gate and the adjacent spacing of choking water between lock is 4～6km.
Described adjacent two to choke water spacing between lock identical.
The invention has the beneficial effects as follows: when cold-weather operation, can on water-drawing channel, form ice sheet, generating current are carried under ice sheet, flow directly to forebay generating, more traditional defeated ice method of operation has been saved row's ice water, can make more water for generating, improve the utilization rate of water energy, increase the economic benefit in power station.
Accompanying drawing explanation
Fig. 1 is the diversion system structural representation for long distance water diversion formula power station, severe cold area of the present invention;
Fig. 2 is the elevation of choking water lock.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1, 2, the present invention is for the diversion system in long distance water diversion formula power station, severe cold area, and water-drawing gate 1 is arranged in power station water-drawing channel 8 foremost, adjusts the size of diversion flow by the aperture of headstock gear 16 regulating gates 15, control diversion flow, keep ice face in channel to stablize.
Intake gate 3 is arranged in power station water inlet, introduces the flow that generating set needs, and by headstock gear 26 closed shutters 25, blocks flow, for generator and hydraulic turbine maintenance.
Earial drainage bottom outlet 4 is also arranged in power station water inlet, and regulates the aperture of bottom gate 7 by headstock gear 26, and the water of abandoning meeting outside generating set water is leaked into Channel of Downstream.
Described water-drawing gate 1 is arranged in water-drawing channel 8 foremost, in the winter time by the aperture of headstock gear 16 regulating gates 15, controls diversion flow, keeps ice face in channel to stablize.
Described many structural configuration of choking water lock 2 are identical, and its headstock gear 6 is slow-motion hoist, and the lifting precision that makes gate 5 is Centimeter Level.
The bottom gate 7 of described earial drainage bottom outlet 4, regulates by headstock gear 26, controls its aperture, regulates letdown flow, maintains the stable of ice sheet.
Above-mentioned headstock gear is slow-motion hoist, can realize the fine setting of gatage.
When described system is used in the winter time, from back to front, the every 5cm of aperture is one grade to its many opening sequences of choking water lock 2, carries out the operation of next stage after the interior depth of water of water-drawing channel 8 is stable again.
The building of described system and equipment will carry out combined dispatching trial run after construction, check water-drawing gate 1, choke water the headstock gear operating condition of lock 2, intake gate 3 and earial drainage bottom outlet 4, check the control accuracy of control appliance, make system call safety, stable, after acceptance(check), can come into operation.
Below use procedure of the present invention is described:
1, owned building and equipment, after construction completes, all pass through field adjustable, after acceptance(check), can come into operation.
2,, after these system and device Installation and Debugging complete, come into operation when daily mean temperature is stabilized in below 0 local winter.
3, in using, the opening speed of strict regulating gate, every grade of falling head is controlled at and is less than 5cm.After channel stable level, carrying out next stage operation;
4, in using, strengthen observing the variation of ice face in water-drawing channel, adjust in time the aperture of gate, make ice sheet stable.
5, temperature raises and channel freezes after thawing, chokes water the utilization of lock in can halt system.
6, after stopping using, stop up water gate and all leave the water, overhaul, safeguard, in the time that arrive winter, again come into operation.
Certain water channeling type power station, channel length 25km, channel bottom width is 4m, and side slope is 1:1.75, and longitudinal gradient 1/2500 at the bottom of canal is arranged and is choked water 4, lock on channel, and the distance between adjacent lock is 5km.
Winter is when system employs, channel water diversion 20m3/s, and canal water depth is stabilized in 5.20m, and canal cross section Buddhist is less than 0.1 as total, and mean velocity in section is less than 0.5m/s.
From the situation of cold-weather operation, monthly average generated energy is 2.3 times of traditional defeated ice method of operation, remarkable in economical benefits.
Above-described embodiment is only for illustrating technological thought of the present invention and feature, its object is to make those skilled in the art can understand content of the present invention and implement according to this, can not only limit the scope of the claims of the present invention with the present embodiment, be equal variation or the modification that all disclosed spirit is done, still drop in the scope of the claims of the present invention.
Claims (3)
1. the diversion system for long distance water diversion formula power station, severe cold area, comprise be arranged in water-drawing channel top from the water-drawing gate (1) of reservoir water intaking, by channel water introduce the intake gate (3) of generating set generating, by bottom gate (7) and the flood discharge bottom outlet (4) that water leaks into downstream river course of abandoning meeting beyond generating water, it is characterized in that, water-drawing channel (8) between water-drawing gate (1) and intake gate (3) upper according to certain pitch arrangement multiple play control water level, maintain ice sheet stabilization choke water lock (2).
2. the diversion system for long distance water diversion formula power station, severe cold area according to claim 1, it is characterized in that, described water-drawing gate (1) and the adjacent spacing between lock (2), adjacent two of choking water are choked water spacing between lock (2), intake gate (3) and the adjacent spacing of choking water between lock (2) is 4～6km.
3. the diversion system for long distance water diversion formula power station, severe cold area according to claim 1, is characterized in that, described adjacent two to choke water spacing between lock (2) identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136056.XA CN103898883A (en) | 2014-04-04 | 2014-04-04 | Water diversion system for long-distance water diversion type hydropower station in severe cold region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136056.XA CN103898883A (en) | 2014-04-04 | 2014-04-04 | Water diversion system for long-distance water diversion type hydropower station in severe cold region |
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| CN103898883A true CN103898883A (en) | 2014-07-02 |
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| CN201410136056.XA Pending CN103898883A (en) | 2014-04-04 | 2014-04-04 | Water diversion system for long-distance water diversion type hydropower station in severe cold region |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926550A (en) * | 2016-04-28 | 2016-09-07 | 河海大学 | Scheduling method for preventing pressure forebay of hydropower station with overlong open diversion channel from being empty |
| CN106049368A (en) * | 2016-08-12 | 2016-10-26 | 西北农林科技大学 | Novel channel section easily forming stable ice cover and design method of novel channel section |
| CN109629525A (en) * | 2018-12-21 | 2019-04-16 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of deep water intake system and its operating method |
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| JPH04371606A (en) * | 1991-06-19 | 1992-12-24 | Mitsubishi Heavy Ind Ltd | Sedimented sand discharger of intake sedimentation basin for hydroelectric power generation |
| CN2203320Y (en) * | 1994-03-09 | 1995-07-12 | 黄国宏 | Pressure pro-pool deicing device |
| RU2254414C2 (en) * | 2002-12-19 | 2005-06-20 | Московский государственный университет природообустройства (МГУП) | Device to protect diversion facility from slush ice |
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| CN203768882U (en) * | 2014-04-04 | 2014-08-13 | 中水北方勘测设计研究有限责任公司 | Water diversion system for long distance diversion-type hydropower station in severe cold area |
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Patent Citations (8)
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| JPS5491937A (en) * | 1977-12-29 | 1979-07-20 | Norio Koshii | Water channel with mud remover |
| JPH04371606A (en) * | 1991-06-19 | 1992-12-24 | Mitsubishi Heavy Ind Ltd | Sedimented sand discharger of intake sedimentation basin for hydroelectric power generation |
| CN2203320Y (en) * | 1994-03-09 | 1995-07-12 | 黄国宏 | Pressure pro-pool deicing device |
| RU2254414C2 (en) * | 2002-12-19 | 2005-06-20 | Московский государственный университет природообустройства (МГУП) | Device to protect diversion facility from slush ice |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926550A (en) * | 2016-04-28 | 2016-09-07 | 河海大学 | Scheduling method for preventing pressure forebay of hydropower station with overlong open diversion channel from being empty |
| CN106049368A (en) * | 2016-08-12 | 2016-10-26 | 西北农林科技大学 | Novel channel section easily forming stable ice cover and design method of novel channel section |
| CN109629525A (en) * | 2018-12-21 | 2019-04-16 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of deep water intake system and its operating method |
| CN109629525B (en) * | 2018-12-21 | 2023-09-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Deep water intake system and operation method thereof |
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Inventor after: Xi Yanlin Inventor after: Ren Tang Inventor after: Sun Bo Inventor after: Lin Yuandan Inventor after: Liu Wanxin Inventor after: Ma Xixiang Inventor after: Zhang Xiusong Inventor after: Bai Suping Inventor after: Wu Shuai Inventor after: Zhu Tao Inventor after: Fan Ruipeng Inventor before: Liu Wanxin Inventor before: Sun Bo Inventor before: Lin Yuandan Inventor before: Ma Xixiang Inventor before: Zhang Xiusong Inventor before: Bai Suping Inventor before: Wu Shuai Inventor before: Zhu Tao Inventor before: Fan Ruipeng Inventor before: Ren Tang |
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Free format text: CORRECT: INVENTOR; FROM: LIU WANXIN LIN YUANDAN MA XIXIANG ZHANG XIUSONG BAI SUPING WU SHUAI ZHU TAO FAN RUIPENG REN TANG SUN BO TO: XI YANLIN LIN YUANDAN LIU WANXIN MA XIXIANG ZHANG XIUSONG BAI SUPING WU SHUAI ZHU TAO FAN RUIPENG REN TANG SUN BO |
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Application publication date: 20140702 |