CN206529752U - A kind of double down stream surge-chamber arrangements combined with diversion tunnel - Google Patents
A kind of double down stream surge-chamber arrangements combined with diversion tunnel Download PDFInfo
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- CN206529752U CN206529752U CN201720007568.5U CN201720007568U CN206529752U CN 206529752 U CN206529752 U CN 206529752U CN 201720007568 U CN201720007568 U CN 201720007568U CN 206529752 U CN206529752 U CN 206529752U
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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 is related to a kind of double down stream surge-chamber arrangements combined with diversion tunnel.The purpose of this utility model is to propose a kind of double down stream surge-chamber arrangements combined with diversion tunnel, can preferably improve that down stream surge-chamber is minimum to surge, while the minimum internal water pressure of raising draft tube, and will not increase construction investment.The technical solution of the utility model is：The structure has built diversion tunnel and newly-built tailwater tunnel, the upstream of the newly-built tailwater tunnel has down stream surge-chamber and is connected by tail water branch pipe with unit, the downstream hole section of the built diversion tunnel is combined to form shared tailwater tunnel with the downstream hole section of newly-built tailwater tunnel, and the upstream hole section reconstruction of built diversion tunnel is surge-chamber；The upstream end and downstream of the surge-chamber are blocked by solid plug, and the solid plug downstream correct position of upstream end sets a passage, and the solid plug of downstream reserves impedance hole and connects the surge-chamber and newly-built tailwater tunnel.The utility model is applied to Hydraulic and Hydro-Power Engineering.
Description
Technical field
The utility model is related to a kind of double down stream surge-chamber arrangements combined with diversion tunnel, it is adaptable to water conservancy and hydropower work
Journey.
Background technology
Power station water-carriage system regulating guarantee design is the important component of water-carriage system design, and wherein draft tube is minimum
Internal water pressure and minimum surge of down stream surge-chamber are one of key contents of regulating guarantee design concern, if draft tube minimum pressure
It is too low, occur water column separation phenomenon, it is minimum to surge too low, surge-chamber bottom may be caused to draw empty；In order to avoid this problem
Appearance, it is some when using the lower room of setting, increase turbine generator inertia to ensure that rotating speed is closed no more than controlling value to extend unit
Between or increase surge-chamber cross dimensions or impedance hole area, improve its water hammer reflecting effect, but these measures can increase
Certain construction investment.
The content of the invention
The technical problems to be solved in the utility model is：For above-mentioned problem, propose that one kind is combined with diversion tunnel
Double down stream surge-chamber arrangements, can preferably improve down stream surge-chamber it is minimum surge, while improve draft tube minimum in
Water pressure, and construction investment will not be increased.
The technical scheme that the utility model is used is：A kind of double down stream surge-chamber arrangements combined with diversion tunnel,
With built diversion tunnel and newly-built tailwater tunnel, the upstream of the newly-built tailwater tunnel has down stream surge-chamber and by tail water
Branch pipe is connected with unit, it is characterised in that the downstream hole section of the built diversion tunnel and the downstream hole section phase of newly-built tailwater tunnel
Shared tailwater tunnel is combined to form, the upstream hole section reconstruction of built diversion tunnel is surge-chamber；The upstream end of the surge-chamber is with
Trip end is blocked by solid plug, and the solid plug downstream correct position of upstream end sets a passage, and the solid of downstream is blocked up
Reserved impedance hole connects the surge-chamber and newly-built tailwater tunnel.
The passage is connected with the ventilation hole of down stream surge-chamber or communication chamber.
The beneficial effects of the utility model are：The diversion tunnel section between two Diversion tunnel plugs is reconstructed in the utility model
For surge-chamber, it can be mended in load rejection with the down stream surge-chamber formation differential effect close to unit position into tunnel
Water, reduces the rate of water make-up of down stream surge-chamber, and lower room is additionally arranged equivalent to existing down stream surge-chamber, can effectively improve
The minimum of some down stream surge-chambers is surged, while improving the minimum internal water pressure of draft tube, is realized a hole and is used, and reconstruct into
This is smaller, and benefit is obvious.
Brief description of the drawings
Fig. 1 is structural plan of the present utility model.
Embodiment
The power station built on great rivers is passed through frequently with diversion tunnel water conservancy diversion, to save construction investment, often considers to lead
A part of hole section for flowing hole is combined with tailwater tunnel, is formed and is shared tailwater tunnel, to reach the purpose for saving construction investment.
As shown in figure 1, the present embodiment is a kind of double down stream surge-chamber arrangements combined with diversion tunnel, it is adaptable to tail water
Tunnel is combined the Long tunnels of construction with diversion tunnel, with built diversion tunnel 1, newly-built tailwater tunnel 2, newly-built tailwater tunnel 2
The down stream surge-chamber 6 that upstream has, and the unit 7 being connected by tail water branch pipe with tailwater tunnel.Work is specifically being built with western part
Exemplified by journey, the downstream hole of built diversion tunnel 1 section is combined with newly-built tailwater tunnel 2 to form shared tailwater tunnel 2-1 and (can save
Construction investment about is up to more than 3,000 ten thousand yuan), and be surge-chamber 1-1 by the upstream hole section reconstruction of built diversion tunnel 1, with tail water
Surge-chamber 6 forms double surge-chamber structures, to reduce the size of down stream surge-chamber 6；Surge-chamber 1-1 upstream end and downstream is equal
Blocked by solid plug 4, the downstream correct position of solid plug 4 of upstream end sets a passage 5, the solid plug 4 of downstream
Lower section reserves an impedance hole 3 and connects the surge-chamber 1-1 and newly-built tailwater tunnel 2, the fluctuating range for reducing surge-chamber；
The caverns such as passage 5 and the ventilation hole of down stream surge-chamber 6 or communication chamber are connected, and are had surge-chamber 1-1 and are connected with outdoor
Table, double down stream surge-chambers are formed with down stream surge-chamber 6.
In the present embodiment, surge-chamber 1-1 can form differential effect in load rejection with down stream surge-chamber 6, to tunnel
Moisturizing in hole, reduces the rate of water make-up close to down stream surge-chamber 6, is additionally arranged lower room equivalent to down stream surge-chamber 6, can effectively change
Kind the minimum of down stream surge-chamber 6 is surged, while improving draft tube import minimum pressure, reduces the size of existing down stream surge-chamber.
Though the utility model is described by previous examples, but still its form of alterable and details, new not departing from this practicality
Implement under the spirit of type.Foregoing is the most rational technical scheme of the utility model, the side of specific implementation only of the present utility model
One of formula, but be not limited thereto.
Claims (2)
1. a kind of double down stream surge-chamber arrangements combined with diversion tunnel, with built diversion tunnel (1) and newly-built tailwater tunnel
(2), the upstream of the newly-built tailwater tunnel (2) has down stream surge-chamber (6) and is connected by tail water branch pipe with unit (7), its
It is characterised by：The downstream hole section of the built diversion tunnel (1) is combined to form shared with the downstream hole section of newly-built tailwater tunnel (2)
Tailwater tunnel (2-1), the upstream hole section reconstruction of built diversion tunnel is surge-chamber (1-1)；The upstream of the surge-chamber (1-1)
End and downstream are blocked by solid plug (4), and solid plug (4) downstream correct position of upstream end sets a passage (5),
The solid plug (4) of downstream reserves impedance hole (3) and connects the surge-chamber (1-1) and newly-built tailwater tunnel (2).
2. a kind of double down stream surge-chamber arrangements combined with diversion tunnel according to claim 1, it is characterised in that：Institute
Passage (5) is stated with the ventilation hole of down stream surge-chamber (6) or communication chamber to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007568.5U CN206529752U (en) | 2017-01-04 | 2017-01-04 | A kind of double down stream surge-chamber arrangements combined with diversion tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007568.5U CN206529752U (en) | 2017-01-04 | 2017-01-04 | A kind of double down stream surge-chamber arrangements combined with diversion tunnel |
Publications (1)
| Publication Number | Publication Date |
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| CN206529752U true CN206529752U (en) | 2017-09-29 |
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| CN201720007568.5U Active CN206529752U (en) | 2017-01-04 | 2017-01-04 | A kind of double down stream surge-chamber arrangements combined with diversion tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356124A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Cavern usual friendship fork structure |
| CN109385988A (en) * | 2018-11-22 | 2019-02-26 | 中国电建集团成都勘测设计研究院有限公司 | For high water head, big flow, short diversion and power workshop tailrace tunnel discharge structure |
| CN114960483A (en) * | 2022-04-22 | 2022-08-30 | 浙江华东工程建设管理有限公司 | Diversion tail water tunnel reconstruction plug upstream permanent drainage structure and drainage method |
| CN115094845A (en) * | 2022-05-21 | 2022-09-23 | 徐康瑞 | Pumped storage chamber suitable for TBM construction and construction method |
-
2017
- 2017-01-04 CN CN201720007568.5U patent/CN206529752U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356124A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Cavern usual friendship fork structure |
| CN109356124B (en) * | 2018-11-21 | 2023-11-21 | 中国电建集团成都勘测设计研究院有限公司 | Chamber level crossing fork structure |
| CN109385988A (en) * | 2018-11-22 | 2019-02-26 | 中国电建集团成都勘测设计研究院有限公司 | For high water head, big flow, short diversion and power workshop tailrace tunnel discharge structure |
| CN114960483A (en) * | 2022-04-22 | 2022-08-30 | 浙江华东工程建设管理有限公司 | Diversion tail water tunnel reconstruction plug upstream permanent drainage structure and drainage method |
| CN114960483B (en) * | 2022-04-22 | 2024-01-12 | 浙江华东工程建设管理有限公司 | Diversion tail water hole reconstruction plugging head upstream permanent drainage structure and drainage method |
| CN115094845A (en) * | 2022-05-21 | 2022-09-23 | 徐康瑞 | Pumped storage chamber suitable for TBM construction and construction method |
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