CN203429610U - Arrangement structure capable of improving minimum pressure of inlet of draft tube and decreasing tailrace surge chamber - Google Patents
Arrangement structure capable of improving minimum pressure of inlet of draft tube and decreasing tailrace surge chamber Download PDFInfo
- Publication number
- CN203429610U CN203429610U CN201320439259.7U CN201320439259U CN203429610U CN 203429610 U CN203429610 U CN 203429610U CN 201320439259 U CN201320439259 U CN 201320439259U CN 203429610 U CN203429610 U CN 203429610U
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- surge
- tailrace
- chamber
- minimum pressure
- draft tube
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- 230000003247 decreasing effect Effects 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000008676 import Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/50—Hydropower in dwellings
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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 relates to an arrangement structure capable of improving minimum pressure of an inlet of a draft tube and decreasing a tailrace surge chamber. The utility model aims at providing the arrangement structure capable of improving the minimum pressure of the inlet of the draft tube and decreasing the tailrace surge chamber, which is simple in structure and convenient for construction, the minimum pressure of the inlet of the draft tube is feasibly and effectively improved, and the scale of the surge chamber and the excavation risk of the huge surge chamber are reduced so as to serve engineering construction better. The utility model adopts the technical scheme: by adopting the arrangement structure capable of improving the minimum pressure of the inlet of the draft tube and decreasing the tailrace surge chamber, a hydropower station is provided with a plurality of hydraulic unit water conveyance systems containing surge chambers, the surge chambers are communicated with a tailrace tunnel through an impedance hole I, one end of the tailrace tunnel is connected to a machine set in a hydropower house, the arrangement structure is characterized in that a tailrace branch small well is arranged between the surge chambers and the hydropower house, and the tailrace branch small well is communicated with the tailrace tunnel through an impedance hole II. The arrangement structure is suitable for hydraulic and hydro-power engineering.
Description
Technical field
The utility model relates to a kind of arrangement that improves draft tube import minimum pressure and reduce down stream surge-chamber.Be applicable to Hydraulic and Hydro-Power Engineering.
Background technology
China is that protection of the environment is going into overdrive to carry out regenerative resource exploitation at present; wherein hydraulic power project becomes as green regenerative energy sources the direction that country first develops; large quantities of huge large capacity hydraulic power projects are developed in succession; for meeting draft tube import minimum pressure, down stream surge-chamber wave stability, the satisfied control of bore water level requirement, surge-chamber build scale is extremely huge.In engineering, conventionally adopt the measures such as distance that reduce unit Installation Elevation, increase tailwater tunnel size and shorten between surge-chamber and unit as far as possible to improve draft tube import minimum pressure, but all there are certain restraining factors in said method.Reduce unit Installation Elevation and increased on the one hand relevant construction investment, increased on the other hand the manufacture difficulty of unit; Increase tailwater tunnel size and increased on the one hand investment, unfavorable to the adjoining rock stability of cavern on the other hand; The distance shortening between unit and surge-chamber makes the effect of surge-chamber reflection water hammer more remarkable, but is subject to hole group's adjoining rock stability restriction, the limited space that the distance between unit and surge-chamber further shortens.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, improving draft tube import minimum pressure and reducing the arrangement of down stream surge-chamber of a kind of simple in structure, easy construction is provided, the effective draft tube import minimum pressure that improves, reducing the excavation risk of surge-chamber scale and huge surge-chamber, is better engineering construction service.
The technical scheme that the utility model adopts is: improve draft tube import minimum pressure and the arrangement that reduces down stream surge-chamber, power station has a plurality of waterpower unit water-carriage system containing surge-chamber, surge-chamber is communicated with tailwater tunnel through impedance hole I, tailwater tunnel one end connects the unit in powerhouse of hydropower station, it is characterized in that: tail water arm The Small Well is set between described surge-chamber and powerhouse of hydropower station, and this tail water arm The Small Well is communicated with tailwater tunnel through impedance hole II.
Adjacent surge-chamber is mutual UNICOM after certain elevation.
The beneficial effects of the utility model are: the utility model is simple in structure, easy construction, engineering drop into lower, for the more inappeasable power station of draft tube import minimum pressure, can effectively solve the problem of tailwater tunnel import minimum pressure, for unit safety operation provides safeguard, can reduce surge-chamber build size, reduce engineering risk simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural configuration schematic diagram of embodiment.
Fig. 2 is that in embodiment, surge-chamber UNICOM arranges typical layout.
The specific embodiment
In the present embodiment, power station has the water-carriage system of two waterpower unit, and water-carriage system all has a surge-chamber 1, and surge-chamber is communicated with the tailwater tunnel 2 of below through impedance hole I 11, and this tailwater tunnel one end is connected with the interior unit of powerhouse of hydropower station 3.
As shown in Figure 1, set up a tail water arm The Small Well 4 between surge-chamber 1 and powerhouse of hydropower station 3, this The Small Well is communicated with the tailwater tunnel 2 of below by impedance hole II 41.In this example, tail water arm The Small Well 4 forms " differential effect " with surge-chamber 1, makes full use of The Small Well and unit spacing from shorter advantage, and fast reaction, plays the object of improving to greatest extent tailwater tunnel import minimum pressure.Conventionally optimization obtains according to HYDRODYNAMIC CONDITION RELATING TO for the basal area of tail water arm The Small Well 4 and height, on this basis if necessary can be by the double draft tube Emergency Gate well of doing of this The Small Well.
As shown in Figure 2, the water-carriage system that contains a plurality of waterpower unit for a power station, as the present embodiment has two waterpower unit, can consider two surge-chambers 1 UNICOM after certain elevation to arrange, the setting of UNICOM's elevation need to not carried out hydraulic connection under general operating mode, under extreme operating condition, consider the waterpower effect of " sharing " of 1 pair of another one surge-chamber 1 of a surge-chamber, reduce the highest bore, reach the object that reduces surge-chamber 1 build size.
Certainly, above-mentioned explanation is not limitation of the utility model, and the utility model is also not limited to above-mentioned giving an example; those skilled in the art; in scope of the present utility model, the variation of making, change and add or replace, all should belong to protection domain of the present utility model.
Claims (2)
1. one kind is improved draft tube import minimum pressure and the arrangement that reduces down stream surge-chamber, power station has a plurality of waterpower unit water-carriage system containing surge-chamber (1), surge-chamber (1) is communicated with tailwater tunnel (2) through impedance hole I (11), tailwater tunnel one end connects the unit in powerhouse of hydropower station (3), it is characterized in that: between described surge-chamber (1) and powerhouse of hydropower station (3), tail water arm The Small Well (4) is set, this tail water arm The Small Well is communicated with tailwater tunnel (2) through impedance hole II (41).
2. arrangement according to claim 1, is characterized in that: adjacent surge-chamber (1) is mutual UNICOM after certain elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439259.7U CN203429610U (en) | 2013-07-23 | 2013-07-23 | Arrangement structure capable of improving minimum pressure of inlet of draft tube and decreasing tailrace surge chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439259.7U CN203429610U (en) | 2013-07-23 | 2013-07-23 | Arrangement structure capable of improving minimum pressure of inlet of draft tube and decreasing tailrace surge chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203429610U true CN203429610U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439259.7U Expired - Fee Related CN203429610U (en) | 2013-07-23 | 2013-07-23 | Arrangement structure capable of improving minimum pressure of inlet of draft tube and decreasing tailrace surge chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203429610U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179159A (en) * | 2014-09-11 | 2014-12-03 | 武汉大学 | Hydropower station free-surface-pressurized flow tail water system |
| CN105040649A (en) * | 2015-08-05 | 2015-11-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Pressure regulating well structure using traffic hole as upper chamber and construction method |
| CN105821817A (en) * | 2016-03-24 | 2016-08-03 | 中国电建集团华东勘测设计研究院有限公司 | Method for excavating semicircular dome of giant cylindrical surge chamber |
| 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 |
-
2013
- 2013-07-23 CN CN201320439259.7U patent/CN203429610U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179159A (en) * | 2014-09-11 | 2014-12-03 | 武汉大学 | Hydropower station free-surface-pressurized flow tail water system |
| CN105040649A (en) * | 2015-08-05 | 2015-11-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Pressure regulating well structure using traffic hole as upper chamber and construction method |
| CN105821817A (en) * | 2016-03-24 | 2016-08-03 | 中国电建集团华东勘测设计研究院有限公司 | Method for excavating semicircular dome of giant cylindrical surge chamber |
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 |