CN207092036U - A kind of Diversion system of hydropower station layout pattern - Google Patents
A kind of Diversion system of hydropower station layout pattern Download PDFInfo
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- CN207092036U CN207092036U CN201721072402.8U CN201721072402U CN207092036U CN 207092036 U CN207092036 U CN 207092036U CN 201721072402 U CN201721072402 U CN 201721072402U CN 207092036 U CN207092036 U CN 207092036U
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- surge
- branch pipe
- chamber
- layout pattern
- diversion
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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 utility model discloses a kind of Diversion system of hydropower station layout pattern, including being arranged at the main hole of upstream, at least two branch pipes that bifurcated is connected to main hole downstream, the unit for being arranged at each branch pipe downstream, be equipped with surge-chamber on each branch pipe, positioned at the upstream end of unit.The utility model changes conventional design thinking and engineering is actual, surge-chamber is set up separately on longer diversion branch pipe, the length of electricity generation system upstream pressure pipeline is substantially reduced, reduces fluid inertia time constant, unit regulation performance is improved, there is higher economic value and social benefit.
Description
Technical field
The utility model belongs to hydroelectric project, and in particular to a kind of Diversion system of hydropower station layout pattern.
Background technology
In the hydroelectric station design of long range pressure conduit, in order to reflect surge wave, avoid or reduce pressure pipeline
In surge pressure, meet unit regulation, ensure technical requirements, improve service condition of the unit in load variations and power supply matter
Amount, surge-chamber is set to meet power plant safety stable operation requirement generally on water delivery electricity generation system pressure pipeline.
Under prior art conditions, according to Hydropower station pivotal general layout and the requirement of unit regulation assurance calculation, pressure regulation
The arrangement one of room shares four kinds, the i.e. double surge-chambers of upstream surge-chamber, downstream surge-chamber, upstream and downstream and the double pressure regulation of upstream tandem
Room.
The double surge-chambers of upstream tandem（As shown in Figure 1）Though efficiently solve the main hole of upstream diversion it is longer in the case of, unit
Regulating guarantee needs and complex geological condition reduces single surge-chamber basal area, ensures the engineering safety technologies such as cavern excavation stabilization
Problem.But in practice of engineering design, being arranged sometimes according to hub station needs or is arranged bar by engineering actual landform geology etc.
The restriction of part, diversion system have longer branch length of tube.If still using the double surge-chambers of upstream surge-chamber or upstream tandem
Arrangement, it is clear that can not cost-effectively solve because of the long build-up of pressure pipeline water flow inertia time constant mistake of diversion branch pipe
Greatly, the problem of power station unit regulation performance is poor caused by or is unsatisfactory for design requirement.If scrape increase diversion branch pipe pipe
Footpath, design current velocity is reduced to reduce pressure pipeline fluid inertia time constant, first, the amplitude that fluid inertia time constant lowers
It is limited, second, engineering construction cost will be greatly increased and lose economy.
Utility model content
In view of the above-mentioned problems, the utility model aims to provide and a kind of has longer branch length of tube situation in diversion system
Under, fluid inertia time constant can be reduced, improves the diversion system layout pattern of unit regulation performance.
The utility model solve problem technical scheme be：A kind of Diversion system of hydropower station layout pattern, including be arranged at
At least two branch pipes that the main hole of upstream, bifurcated are connected to main hole downstream, the unit for being arranged at each branch pipe downstream,
Surge-chamber is equipped with each branch pipe, positioned at the upstream end of unit.
The diversion system of above-mentioned layout pattern, suitable for the situation that branch pipe is longer, satisfaction sets surge-chamber condition.This feelings
Under condition, if also surge-chamber is located on supervisor, diversion branch pipe is long to cause pressure pipeline between surge-chamber and generating set
Long, pressure pipeline fluid inertia time constant is excessive, it is impossible to meets the stable operation of power station unit.If using the knot of this case
Structure just can solve this problem, directly by Set surge tank on branch pipe, shorten between generating set and surge-chamber
The length of pressure pipeline, reduce fluid inertia time constant.
Specifically, the branch pipe is provided with two, the branch length of tube is more than main hole length.
Connected between the main hole and branch pipe by bifurcated pipe.
The surge-chamber is throttled surge chamber.
Remarkable result of the present utility model is：
1. changing conventional design thinking and engineering being actual, surge-chamber is set up separately on longer diversion branch pipe, gone here and there with upstream
The layout pattern of the double surge-chambers of connection compares, and substantially reduces the length of electricity generation system upstream pressure pipeline, reduces current and be used to
Property time constant, improves unit regulation performance.
2. solves the Layout Problem of long diversion branch pipe upstream surge-chamber under a hole multimachine way of supplying water, without using increase
Diversion branch diameter, the mode of design current velocity is reduced to reduce pressure pipeline fluid inertia time constant, significantly reduces work
Journey cost, investment is saved, shortened the engineering construction cycle, there is higher economic value and social benefit.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is prior art diversion system layout pattern structural representation.
Fig. 2 is the utility model diversion system layout pattern structural representation.
In figure：The main holes of 1-, 2- branch pipes, 3- units, 4- surge-chambers, 5- bifurcated pipes.
Embodiment
The case history of this case application introduced below：
Certain Iranian dam is located at power station project on the Rudbar rivers in the western Zagros mountain areas of Iran, away from capital Teheran
454km.Power station is water channeling type power station under high earthquake territory complex geological condition, and engineering is by dam, spillway, water-carriage system, ground
The key construction such as factory building and switchyard forms.Reservoir capacity is 2.28 hundred million m3, installed capacity of power station 450MW, rated head
430.74m metered flow 115.6m3/s。
Power station water-carriage system is mainly including bright in water inlet, diversion tunnel, diversion Cha Dong, throttled surge chamber, two-wire hole
Pipe, outdoor bright pipe, wear the buildings such as bright pipe in ridge hole, the bright pipe in the preceding ground of factory and tail water culvert pipe.
As shown in Fig. 2 a kind of Diversion system of hydropower station layout pattern, including be arranged at the main hole 1 of upstream, bifurcated is connected to
The branch pipe 2 of the main downstream of hole 1, the unit 3 for being arranged at each branch pipe downstream.The length of branch pipe 2 is more than the main length of hole 1.Main hole 1
It is connected between branch pipe 2 by bifurcated pipe 5.The main bifurcation point of hole 1 of diversion is located closer to reservoir rather than turbine-generator units 3.
Two diversion branch pipes 2 are longer after bifurcated pipe 5.The branch pipe 2 is provided with two, and diversion system uses the arrangement of the machine of a hole two.Every
Throttled surge chamber 4 is equipped with one branch pipe 2, positioned at the upstream end of unit 3.
The diversion system of above-mentioned layout pattern, it is longer suitable for branch pipe 2（The length of branch pipe 2 can be more than the main length of hole 1, also may be used
Less than the main length of hole 1）, meet set the condition of surge-chamber 4 situation.Directly surge-chamber 4 is arranged on branch pipe 2, shortens hair
The length of pressure pipeline between group of motors 3 and surge-chamber 4, reduces fluid inertia time constant.
Claims (4)
1. a kind of Diversion system of hydropower station layout pattern, including it is arranged at the main hole of upstream（1）, bifurcated be connected to main hole（1）Under
Swim at least two branch pipes at end（2）, be arranged at the unit of each branch pipe downstream（3）, it is characterised in that：In each branch pipe
（2）Above, positioned at unit（3）Upstream end be equipped with surge-chamber（4）.
2. Diversion system of hydropower station layout pattern according to claim 1, it is characterised in that：The branch pipe（2）Provided with two
Bar, the branch pipe（2）Length is more than main hole（1）Length.
3. Diversion system of hydropower station layout pattern according to claim 1, it is characterised in that：The main hole（1）With branch pipe
（2）Between pass through bifurcated pipe（5）Connection.
4. Diversion system of hydropower station layout pattern according to claim 1, it is characterised in that：The surge-chamber（4）For resistance
Anti- formula surge-chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072402.8U CN207092036U (en) | 2017-08-25 | 2017-08-25 | A kind of Diversion system of hydropower station layout pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072402.8U CN207092036U (en) | 2017-08-25 | 2017-08-25 | A kind of Diversion system of hydropower station layout pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207092036U true CN207092036U (en) | 2018-03-13 |
Family
ID=61540042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721072402.8U Active CN207092036U (en) | 2017-08-25 | 2017-08-25 | A kind of Diversion system of hydropower station layout pattern |
Country Status (1)
| Country | Link |
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| CN (1) | CN207092036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853494A (en) * | 2019-03-12 | 2019-06-07 | 中国电建集团中南勘测设计研究院有限公司 | Cha Dong and surge-chamber integral structure and its construction method |
-
2017
- 2017-08-25 CN CN201721072402.8U patent/CN207092036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853494A (en) * | 2019-03-12 | 2019-06-07 | 中国电建集团中南勘测设计研究院有限公司 | Cha Dong and surge-chamber integral structure and its construction method |
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