CN1884706A - Cover type air cushion type pressure balance chamber - Google Patents
Cover type air cushion type pressure balance chamber Download PDFInfo
- Publication number
- CN1884706A CN1884706A CNA2006100212960A CN200610021296A CN1884706A CN 1884706 A CN1884706 A CN 1884706A CN A2006100212960 A CNA2006100212960 A CN A2006100212960A CN 200610021296 A CN200610021296 A CN 200610021296A CN 1884706 A CN1884706 A CN 1884706A
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- China
- Prior art keywords
- air
- air cushion
- chamber
- pressure balance
- cover body
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
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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
Abstract
The invention relates to a frame air cushion pressure adjustable room which uses high pressure to form air cushion to restrain water level and water fluctuation, to be used in the condition with high rock natural penetration, wherein the invention forms air cushion and water cushion in sealed air room; the air room via connecting tunnel is connected to the pressure water channel; the periphery and top of air room are formed by the sealing frame with open bottom, to effectively seal the gas of air room. The invention can realize effective gas seal in the pressure adjustable room, with lower demand to the rock penetration, high detecting level and low flux. And the invention can save cost.
Description
Technical field
The present invention relates to suppress in a kind of Hydraulic and Hydro-Power Engineering the equipment of water hammer and billow, especially a kind of pressure-air that utilizes forms the cover type air cushion type pressure balance chamber that air cushion suppresses height of water level and water-level fluctuation amplitude.
Background technology
The surge-chamber that uses in the Hydraulic and Hydro-Power Engineering is a kind of device that is used to suppress water hammer and billow, water hammer ripple and the billow utilizing surge-chamber to make to transmit in the pressure conduit suppress, thereby reduce the water hammer pressure of pressure conduit, help improving the operation stability and the power supply quality of unit.Conventional surge-chamber top communicates with atmosphere, and indoor water surface pressure is identical with atmospheric pressure all the time, thereby when the power station load was adjusted, the water surface fluctuation amplitude was bigger, and the surge-chamber volume is also corresponding bigger; And air cushion type pressure balance chamber, top is closed state and fills with compressed air, utilizes air chamber inner high voltage air to form " air cushion " to suppress indoor height of water level and water-level fluctuation amplitude, and its liquid level bears higher pressure.When the power station abandoned load, along with water level in the air cushion type pressure balance chamber rises, upper air was further compressed, and the pressure that the water surface bears continues to increase, and the inhibitory action that the water level rising is subjected to is more and more stronger, thereby the water surface increasing degree of air cushion type pressure balance chamber is less; Situation is then opposite when the power station increases load, and the air cushion type pressure balance chamber water level range of decrease is also less.Because air cushion type pressure balance chamber water surface fluctuation amplitude is all less, the conventional surge-chamber of the also corresponding ratio of its volume is little.
First is adopted the power station-Driva power station of air cushion type pressure balance chamber to build up generating in 1973 in Norway in the world, this installed capacity of power station 140MW, utilized head 570m, so far the practical experience that success in existing 33 years moves, at present, air cushion type pressure balance chamber is adopted in a power station surplus Norway existing ten, has accumulated the experience of aspects such as abundant exploration, design, construction, operational management.From data as can be seen,, three kinds of common methods are arranged for the processing of air cushion type pressure balance chamber gas leakage problem in Norway: 1, utilize rock itself complete, the crack agensis, the natural permeability of rock is little; 2, consolidation by grouting country rock; 3, the choke water curtain is set.More than handle the method for air cushion type pressure balance chamber gas leakage problem, it is effective using in Norway, but this air cushion type pressure balance chamber is had relatively high expectations to country rock, and the geological conditions of China does not often satisfy the requirement of air cushion type pressure balance chamber to the country rock seepage, and the natural permeability of rock is bigger.Built up from one li and little sky power stations all in Chinese Sichuan and adopted the hold one's breath air cushion type pressure balance chamber of mode of superpressure " water curtain ", when the water surface in the air chamber during near design water level, air leakage is about 40Nm from one li power station
3/ min, all the power station is when the water surface in the air chamber during near design water level for little sky, and air leakage is about 20Nm
3/ min is hundreds of times of air cushion type pressure balance chamber air leakage that Norway has built the power station.
Summary of the invention
Technical problem to be solved by this invention provides a kind of air cushion type pressure balance chamber of adopting of being suitable under the bigger geological conditions of the natural permeability of rock.
The technical solution adopted for the present invention to solve the technical problems is: cover type air cushion type pressure balance chamber, comprise airtight air chamber, and utilize source of the gas in air chamber, to inflate in use, make it in air chamber, form air cushion and water cushion.Air chamber is communicated with pressure conduit by connecting the tunnel, and the periphery of air chamber and top are made of the uncovered airtight cover body in band bottom, thus but the gas in the effective closure air chamber.
As to further improvement in the technical proposal, periphery and top outer along cover body are provided with the concora crush pipe network that is communicated with water cushion, the concora crush hole pipe that is provided with at interval and is communicated with the concora crush pipe network gos deep in the basement rock in the cover body outside, thereby the water pressure in the air chamber outside and the gas pressure in the air chamber are transmitted mutually, reach the purpose of outside pressure in the balance air chamber.
As to further improvement in the technical proposal, the base plate of air chamber is set to connecting the slope that the tunnel tilts, and it is unobstructed to the water channel moisturizing to be beneficial to surge-chamber, also is beneficial to the emptying of water body in the air chamber when emptying is overhauled.
The invention has the beneficial effects as follows: owing to adopted the technical scheme of utilizing the gases at high pressure in the airtight cover body closed air chamber, thereby solved the technical barrier that air cushion type pressure balance chamber is held one's breath in the high head water power plant, air cushion type pressure balance chamber is applied on a large scale in China becomes possibility.Cover type air cushion type pressure balance chamber of the present invention requires low than " water curtain " air cushion type pressure balance chamber to the country rock permeability, meet domestic geological conditions and present construction, detection level.The head height, quote that flow is little, cover type air cushion type pressure balance chamber of the present invention is adopted in the good power station of diversion system geological conditions along the line, help the protection of diversion system surrounding enviroment, also can save construction investment.
Description of drawings
Fig. 1 is a layout schematic diagram of the present invention.
Fig. 2 is that the A-A of Fig. 1 analyses and observe enlarged diagram.
Fig. 3 is that the B-B of Fig. 1 analyses and observe enlarged diagram.
Be labeled as among the figure: air chamber 1, connection tunnel 2, pressure conduit 3, cover body 4, sandwich layer 5, steel concrete prop up sheath 6, air cushion 7, water cushion 8, concora crush pipe network 9, concora crush hole pipe 10, base plate 11.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As Fig. 1～shown in Figure 3, cover type air cushion type pressure balance chamber of the present invention adopts airtight air chamber 1 equally, by inflation in air chamber 1, makes it form air cushion 7 and water cushion 8 in air chamber 1.Air chamber 1 is communicated with pressure conduit 3 by connecting tunnel 2, the periphery of air chamber 1 and top are made of the uncovered airtight cover body 4 in band bottom, utilize the gas in the formed air cushion 7 in airtight cover body 4 closed air chambers 1, thereby can avoid the big deficiency of air cushion type pressure balance chamber air leakage that causes greatly owing to the country rock seepage, reduce the requirement of air cushion type pressure balance chamber the country rock seepage.
Generating set can cause that the inside and outside both sides of cover body 4 form pressure reduction when abandoning or increase load.In order to reach outside pressure in the balance cover body 4, reduce the purpose of its pressure reduction, along cover body 4 the arranged outside peripheral and top the concora crush pipe network 9 that is communicated with water cushion 8 is arranged, interval setting and the concora crush hole pipe 10 that is communicated with concora crush pipe network 9 go deep in the basement rock in cover body 4 outsides.
Unobstructed in order to be beneficial to surge-chamber to pressure conduit 3 moisturizings, when overhauling, water diverting structure emptying also is beneficial to the emptying of water body in the air chamber 1, and the base plate 11 of air chamber 1 is set to be higher than the top that connects tunnel 2.Simultaneously, preferably the base plate 11 of air chamber 1 is set to tilt to connecting tunnel 2, promptly air chamber base plate 11 is made 1%～2% the slope that tendency connects tunnel 2.
For construct, the convenience of maintenance etc., the reduction construction cost of trying one's best simultaneously can adopt in the inboard of cover body 4 the air seal layer is set, the arranged outside steel concrete of cover body 4 props up the form of structure of sheath 6.The air seal layer can adopt modes such as spraying macromolecular material, welding steel to form.
The flat shape of air cushion type pressure balance chamber should be tried one's best simply, and in order to the layout of making peaceful pressing system, the simplest is bar shaped.The cross section of cover body 4 is preferably gateway opening shape, and promptly cross section is down " U " shape, width and highly generally select narrow high type for use, because strengthen height, can reduce stable cross section, under equal initial water level condition, can increase available gas volume ratio, thereby reduce total excavated volume of air cushion surge-chamber.
Claims (6)
1, cover type air cushion type pressure balance chamber, comprise airtight air chamber (1), form air cushion (7) and water cushion (8) in air chamber (1), air chamber (1) is communicated with pressure conduit (3) by connecting tunnel (2), it is characterized in that: the periphery of air chamber (1) and top are made of the uncovered airtight cover body (4) in band bottom.
2, cover type air cushion type pressure balance chamber as claimed in claim 1, it is characterized in that: the arranged outside along cover body (4) periphery and top has the concora crush pipe network (9) that is communicated with water cushion (8), and interval setting and the concora crush hole pipe (10) that is communicated with concora crush pipe network (9) go deep in the basement rock in cover body (4) outside.
3, cover type air cushion type pressure balance chamber as claimed in claim 1 is characterized in that: the base plate (11) of air chamber (1) is set to connecting the slope that tunnel (2) tilts.
4, as claim 1,2 or 3 described cover type air cushion type pressure balance chambers, it is characterized in that: cover body (4) adopts the metal sheet of seal welding as sandwich layer (5), is provided with steel concrete and props up sheath (6) inside and outside sandwich layer (5).
5, as claim 1,2 or 3 described cover type air cushion type pressure balance chambers, it is characterized in that: the inboard of cover body (4) is provided with the air seal layer, and the arranged outside of cover body (4) has steel concrete to prop up sheath (6).
6, as claim 1,2 or 3 described cover type air cushion type pressure balance chambers, it is characterized in that: the cross section of cover body (4) is down " U " shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100212960A CN100458021C (en) | 2006-06-29 | 2006-06-29 | Cover type air cushion type pressure balance chamber |
| PCT/CN2007/001956 WO2008003228A1 (en) | 2006-06-29 | 2007-06-22 | A cover air cushion pressure adjustable room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100212960A CN100458021C (en) | 2006-06-29 | 2006-06-29 | Cover type air cushion type pressure balance chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884706A true CN1884706A (en) | 2006-12-27 |
| CN100458021C CN100458021C (en) | 2009-02-04 |
Family
ID=37583006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100212960A Active - Reinstated CN100458021C (en) | 2006-06-29 | 2006-06-29 | Cover type air cushion type pressure balance chamber |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100458021C (en) |
| WO (1) | WO2008003228A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008003228A1 (en) * | 2006-06-29 | 2008-01-10 | China Hydroelectric Engineering Consulting Group Chengdu Research Hydroelectric Investigation Design And Institute | A cover air cushion pressure adjustable room |
| CN100462505C (en) * | 2006-12-28 | 2009-02-18 | 吴昊 | Hydroelectric station voltage regulating room structure |
| CN101126233B (en) * | 2007-08-17 | 2010-07-21 | 黄河勘测规划设计有限公司 | Complex impedance type hydraulic power plant surge-chamber structure |
| CN105332363A (en) * | 2015-11-23 | 2016-02-17 | 重庆交通大学 | Pressure-adjustable core bag type air cushion surge chamber |
| CN107747300A (en) * | 2017-11-20 | 2018-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Diversion system for Power Tunnels |
| CN110080926A (en) * | 2019-05-05 | 2019-08-02 | 黄河勘测规划设计研究院有限公司 | Increase the impulse water wheel unit structure of productive head |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095423A (en) * | 1977-05-05 | 1978-06-20 | Alexander Moiseevich Gorlov | Apparatus for harnessing tidal power |
| US4253032A (en) * | 1978-12-13 | 1981-02-24 | Lochner Johannes P A | Utilization of wave motion |
| JP2863994B2 (en) * | 1995-06-16 | 1999-03-03 | 有限会社創馬エンジニアリング | Bag-type closed pressure regulating water tank |
| CN2242266Y (en) * | 1995-10-06 | 1996-12-11 | 曾祥炜 | Shuttle like pressure-adjusting apparatus for pressure pipe-line of water power plant |
| CN100458021C (en) * | 2006-06-29 | 2009-02-04 | 中国水电顾问集团成都勘测设计研究院 | Cover type air cushion type pressure balance chamber |
| CN2918538Y (en) * | 2006-06-29 | 2007-07-04 | 中国水电顾问集团成都勘测设计研究院 | Bell-type air cushion surge chamber |
-
2006
- 2006-06-29 CN CNB2006100212960A patent/CN100458021C/en active Active - Reinstated
-
2007
- 2007-06-22 WO PCT/CN2007/001956 patent/WO2008003228A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008003228A1 (en) * | 2006-06-29 | 2008-01-10 | China Hydroelectric Engineering Consulting Group Chengdu Research Hydroelectric Investigation Design And Institute | A cover air cushion pressure adjustable room |
| CN100462505C (en) * | 2006-12-28 | 2009-02-18 | 吴昊 | Hydroelectric station voltage regulating room structure |
| CN101126233B (en) * | 2007-08-17 | 2010-07-21 | 黄河勘测规划设计有限公司 | Complex impedance type hydraulic power plant surge-chamber structure |
| CN105332363A (en) * | 2015-11-23 | 2016-02-17 | 重庆交通大学 | Pressure-adjustable core bag type air cushion surge chamber |
| CN107747300A (en) * | 2017-11-20 | 2018-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Diversion system for Power Tunnels |
| CN110080926A (en) * | 2019-05-05 | 2019-08-02 | 黄河勘测规划设计研究院有限公司 | Increase the impulse water wheel unit structure of productive head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100458021C (en) | 2009-02-04 |
| WO2008003228A1 (en) | 2008-01-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 |
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| RR01 | Reinstatement of patent right |
Former decision: cessation of patent right due to non-payment of the annual fee Former decision publication date: 20100922 |
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| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTI Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF CHINA HYDROPOWER CONSU |
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| CP01 | Change in the name or title of a patent holder |
Address after: 610072 Sichuan city of Chengdu province's North Road No. Patentee after: Chengdu Hydroelectric Investigation & Design Institute of SPC Address before: 610072 Sichuan city of Chengdu province's North Road No. Patentee before: Chengdu Hydroelectric Investigation & Design Institute of China Hydropower Consu |
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| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP CHENGDU INVESTIGATION DESIGN + R Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF SPC |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610072 Sichuan city of Chengdu province's North Road No. Patentee after: Co., Ltd of Chengdu survey and design academy of electricity Jian group of China Address before: 610072 Sichuan city of Chengdu province's North Road No. Patentee before: Chengdu Hydroelectric Investigation & Design Institute of SPC |