CN203768883U - Tunnel differential surge chamber system - Google Patents
Tunnel differential surge chamber system Download PDFInfo
- Publication number
- CN203768883U CN203768883U CN201420066024.2U CN201420066024U CN203768883U CN 203768883 U CN203768883 U CN 203768883U CN 201420066024 U CN201420066024 U CN 201420066024U CN 203768883 U CN203768883 U CN 203768883U
- Authority
- CN
- China
- Prior art keywords
- chamber
- surge
- differential
- monomer
- surge chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000178 monomer Substances 0.000 claims description 32
- 239000011435 rock Substances 0.000 claims description 6
- 238000009795 derivation Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 230000009699 differential effect Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a tunnel differential surge chamber system which improves the structural safety performance, lowers design difficulty, and meanwhile achieves a differential effect by a tunnel to solve the problems that a single differential surge chamber is large in structural scale and high in structural design demand. According to the technical scheme, the tunnel differential surge chamber system is characterized in that the tail ends of pressure head races on the same hydroelectric generation unit are sequentially provided with two or three single body surge chambers, the lower end of each single body surge chamber is communicated with the corresponding pressure head race, the upper portions of all the single body surge chambers are communicated with one another through an upper overflow chamber, the pressure head races are connected with a pressure pipeline at the lower end of the tail stage single body surge chamber, and the upper end of the tail stage single body surge chamber is connected with an auxiliary hole chamber. The tunnel differential surge chamber system is suitable for water resources and hydropower engineering.
Description
Technical field
The utility model relates to a kind of cave system differential surge chamber system, is applicable to Hydraulic and Hydro-Power Engineering.
Background technology
General, the power station of slightly growing for channel system, regulates guarantee requirement for meeting power station, and pressure adjusting structure need to be set, and pressure adjusting structure is taking surge-chamber as main conventionally, and fundamental type is mainly simple-type, impedance type, differential type, air-cushion type etc.Differential surge chamber is mainly by the riser on carry potential overflow weir, large chamber and impedance hole composition, conventionally be applicable to diversion system scale large, derivation conduit length is long, fluid inertia is large, surge-chamber water-level fluctuation is long die-away time, the engineering that water-level fluctuation amplitude is large, in the time there is action or load variations in power station unit, utilize differential surge chamber riser different with large chamber volume, the difference of water level rising or decrease speed, and then the water body producing between riser and large chamber exchanges, reach the object that reduces surge-chamber water-level fluctuation die-away time and reduce water-level fluctuation amplitude, but now the large chamber of differential surge chamber is with between riser, and large chamber base plate is with producing larger pressure differential between pressure diversion road, surge-chamber structure security risk and structure design difficulty are increased, often become one of restraining factors of differential surge chamber layout and structure design.
Use for reference the waterpower adjustment principle of differential surge chamber, utilize hole group to be combined to form power station voltage-regulating system, Dong Qunjiange cavern carries out rational volume distribution, form the cavern layout general layout of " pre-large post-small ", and between each cavern by overflow on chamber be communicated with, in the time there is action or load variations in power station unit, rise or decrease speed difference by forward and backward cavern middle water level, and then the exchange that produces water body between each cavern, form differential effect, reach the object that reduces surge-chamber water-level fluctuation die-away time and reduce water-level fluctuation amplitude.In addition,, because the pressure differential that the differential effect belt of water level comes is born by the country rock between cavern completely, therefore greatly reduce the structural safety risk of surge-chamber and in conjunction with design difficulty.
At present, differential surge chamber built, project under construction is arranged as master mainly with single surge-chamber both at home and abroad, utilize surge chamber system that hole group forms differential effect still in space state, in the large-scale long water channeling type power plant project of planning to build, start gradually to carry out technology exploration and research, still not having ripe experience at present can for reference and reference.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, a kind of safety of structure, reduction design difficulty of strengthening is provided, utilize hole group to form the cave system differential surge chamber system of differential effect, to solve the shortcomings such as the scale of single differential surge chamber structure is large, Structural Design Requirement is high simultaneously.
The technical scheme that the utility model adopts is: a kind of cave system differential surge chamber system, it is characterized in that: the pressure diversion road end on same hydroelectric generation unit is arranged the monomer surge-chamber of two or three successively, the lower end of each monomer surge-chamber is communicated with pressure diversion road, the top of each monomer surge-chamber is interconnected by chamber in overflow, in the lower end of final stage monomer surge-chamber, described pressure diversion road Bonding pressure pipeline, and the upper end of final stage monomer surge-chamber connects auxiliary cavern.
The volume of described prime monomer surge-chamber is greater than the volume of each rear class monomer surge-chamber.
Described pressure diversion road starts to be divided into two strands of derivation conduits from the prime monomer surge-chamber of upstream extremity, and in overflow simultaneously, chamber is communicated with respectively each monomer surge-chamber.
Described monomer surge-chamber is distributed in country rock.
The beneficial effects of the utility model are: the present embodiment replaces single differential surge chamber structural configuration pattern, meeting under the prerequisite of power station adjusting guarantee requirement, utilize water body exchange and water level differential effect between the group of hole, reach the object that reduces surge-chamber water-level fluctuation die-away time and reduce water-level fluctuation amplitude, the level pressure that differential effect forms is poorly born by country rock between cavern, can effectively evade the shortcoming that single differential surge chamber scale is large, Structural Design Requirement is high, reduce engineering design and build difficulty, strengthen safety of structure.
Brief description of the drawings
Fig. 1 is layout plan of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to sectional drawing.
Detailed description of the invention
As Fig. 1, shown in 2, the present embodiment is a kind of cave system differential surge chamber system, pressure diversion road 3 ends of this system on same hydroelectric generation unit arrange that (shape is cylinder vertical shaft type to three monomer surge-chambers successively, top is sealed with circular arc), upstream side is a prime monomer surge-chamber 1 that volume is larger, downstream is two rear class monomer surge-chambers 2 that volume is less side by side, described pressure diversion road 3 starts to be divided into two strands of derivation conduits from prime monomer surge-chamber 1, form the knockdown surge chamber system of many holes group of Y shape, bear the waterpower adjustment task in power station.The lower end of each monomer surge-chamber is all communicated with pressure diversion road 3, the top of three monomer surge-chambers is interconnected by chamber 5 in the overflow of T font, in the time there is action or load variations in power station unit, between forward and backward level monomer surge-chamber, water level changes, form water level differential effect and water body exchange, reach the object that reduces surge-chamber water-level fluctuation die-away time and reduce water-level fluctuation amplitude.In the lower end of rear class monomer surge-chamber 2, described pressure diversion road 3 cut-in pressure pipeline 4 respectively again, the upper end of rear class monomer surge-chamber 2 connects auxiliary cavern 6, can be in communication with the outside by auxiliary cavern, ventilates, the work such as traffic, later stage operation.
Described monomer surge-chamber is distributed in country rock, the level pressure that water level differential effect forms is poorly born by the country rock between surge-chamber, can effectively evade the shortcoming that single differential surge chamber scale is large, Structural Design Requirement is high, reduce engineering design simultaneously and build difficulty, having strengthened safety of structure.
The volume of described prime monomer surge-chamber 1 is greater than the volume of each rear class monomer surge-chamber 2, forms pre-large post-small cavern's general arrangement general layout, and each surge-chamber time keep enough distances, with meet Stability of Excavation Surrounding and power station adjusting ensure requirement.
Claims (4)
1. a cave system differential surge chamber system, it is characterized in that: pressure diversion road (3) end on same hydroelectric generation unit is arranged the monomer surge-chamber of two or three successively, the lower end of each monomer surge-chamber is communicated with pressure diversion road (3), the top of each monomer surge-chamber is interconnected by chamber in overflow (5), in the lower end of final stage monomer surge-chamber, described pressure diversion road (3) Bonding pressure pipeline (4), and the upper end of final stage monomer surge-chamber connects auxiliary cavern (6).
2. cave system differential surge chamber system according to claim 1, is characterized in that: the volume of described prime monomer surge-chamber (1) is greater than the volume of each rear class monomer surge-chamber (2).
3. cave system differential surge chamber system according to claim 2, it is characterized in that: described pressure diversion road (3) starts to be divided into two strands of derivation conduits from the prime monomer surge-chamber (1) of upstream extremity, in overflow simultaneously, chamber (5) is communicated with respectively each monomer surge-chamber.
4. cave system differential surge chamber system according to claim 1 and 2, is characterized in that: described monomer surge-chamber is distributed in country rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066024.2U CN203768883U (en) | 2014-02-14 | 2014-02-14 | Tunnel differential surge chamber system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066024.2U CN203768883U (en) | 2014-02-14 | 2014-02-14 | Tunnel differential surge chamber system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203768883U true CN203768883U (en) | 2014-08-13 |
Family
ID=51286090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066024.2U Expired - Fee Related CN203768883U (en) | 2014-02-14 | 2014-02-14 | Tunnel differential surge chamber system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203768883U (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 |
-
2014
- 2014-02-14 CN CN201420066024.2U patent/CN203768883U/en not_active Expired - Fee Related
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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |