WO2008003228A1 - Salle à réglage de pression à coussin d'air de couverture - Google Patents

Salle à réglage de pression à coussin d'air de couverture Download PDF

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Publication number
WO2008003228A1
WO2008003228A1 PCT/CN2007/001956 CN2007001956W WO2008003228A1 WO 2008003228 A1 WO2008003228 A1 WO 2008003228A1 CN 2007001956 W CN2007001956 W CN 2007001956W WO 2008003228 A1 WO2008003228 A1 WO 2008003228A1
Authority
WO
WIPO (PCT)
Prior art keywords
air cushion
air
chamber
pressure regulating
water
Prior art date
Application number
PCT/CN2007/001956
Other languages
English (en)
Chinese (zh)
Inventor
Wuyi Chen
Yuanlin Hao
Quancai Liu
Zihai Chen
Tuan Zhang
Chaoqing Liu
Xuefeng Tang
Yuemin Zheng
Original Assignee
China Hydroelectric Engineering Consulting Group Chengdu Research Hydroelectric Investigation Design And Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Hydroelectric Engineering Consulting Group Chengdu Research Hydroelectric Investigation Design And Institute filed Critical China Hydroelectric Engineering Consulting Group Chengdu Research Hydroelectric Investigation Design And Institute
Publication of WO2008003228A1 publication Critical patent/WO2008003228A1/fr

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a device for suppressing water hammer and surge in a water conservancy and hydropower project, in particular to a hood type air cushion type pressure regulating chamber which uses high pressure air to form an air cushion to suppress the water level height and the water level fluctuation amplitude.
  • the pressure regulating chamber used in the water conservancy and hydropower project is a device for suppressing water hammer and surge.
  • the pressure regulating chamber is used to suppress the water hammer wave and surge in the pressure channel, thereby reducing the water in the pressure channel.
  • the hammer pressure is good for the operation stability and power quality of the high unit.
  • the upper part of the conventional surge tank is connected to the atmosphere.
  • the pressure of the indoor water surface is always the same as the atmospheric pressure. Therefore, when the load of the power station is adjusted, the water surface rises and falls a lot, and the volume of the surge chamber is correspondingly larger.
  • the air cushion type pressure regulation chamber is closed at the upper part.
  • the state is filled with compressed air, and the "air cushion" is formed by the high-pressure air in the air chamber to suppress the indoor water level height and the water level fluctuation amplitude, and the liquid surface is subjected to a higher pressure.
  • the power station discards the load, as the water level in the air cushion type pressure regulator rises, the upper air is further compressed, and the pressure on the water surface continues to increase, so that the water level rise is more and more suppressed, so the water surface of the air cushion type pressure regulating chamber
  • the increase is small; when the power station increases the load, the situation is reversed, and the water level of the air cushion type pressure regulating room is also small. Since the air level of the air cushion type pressure regulating chamber is small, the volume is also smaller than that of the conventional pressure regulating chamber.
  • the technical problem to be solved by the present invention is to provide an air cushion type pressure regulating chamber which is suitable for use under geological conditions in which rock natural permeability is large.
  • the technical solution adopted by the present invention to solve the technical problems thereof is as follows:
  • the hood type air cushion type pressure regulating chamber includes a closed air chamber, and is inflated into the air chamber by using a gas source during use to form an air cushion and a water cushion in the air chamber.
  • the air chamber is connected to the pressure water passage through a connecting tunnel, and the periphery and the top portion of the air chamber are composed of a closed cover with an open bottom, so that the gas in the air chamber can be effectively closed.
  • a flat pressure pipe network communicating with the water pad is disposed along the outer periphery and the top outer side of the cover body, and the flat pressure hole pipe which is spaced and connected with the flat pressure pipe network penetrates into the bedrock outside the cover body. Therefore, the water pressure on the outside of the gas chamber and the gas pressure in the gas chamber can be transmitted to each other to balance the pressure on the outside of the gas chamber.
  • the bottom plate of the air chamber is arranged to be inclined to the connecting tunnel, so that the pressure regulating chamber can make up the water to the waterway, and the venting of the water body in the air chamber is also facilitated during the venting maintenance.
  • the invention has the beneficial effects that: the technical solution of closing the high-pressure gas in the gas chamber by using the closed cover body is adopted, thereby solving the technical problem of closing the gas in the air-cushion pressure regulating chamber in the high water head power station, and the air cushion type pressure regulating chamber is in the country. Widespread promotion and application is possible.
  • the hood type air cushion type pressure regulating chamber of the invention has lower permeability requirements for surrounding rock than the "water curtain" air cushion type pressure regulating chamber, and conforms to domestic geological conditions and current construction and testing levels.
  • the hydropower station with high water head, small reference flow and good geological conditions along the diversion system adopts the hood type air cushion type pressure regulating chamber of the invention, which is beneficial to the protection of the surrounding environment of the water diversion system and saves engineering investment.
  • Figure 1 is a schematic plan view of the present invention.
  • Figure 2 is an enlarged cross-sectional view taken along line A-A of Figure 1.
  • Figure 3 is an enlarged schematic cross-sectional view taken along line B-B of Figure 1.
  • the cover type air cushion type pressure regulating chamber of the present invention also uses a closed air chamber 1 to inflate the air chamber 1 to form an air cushion 7 and a water cushion in the air chamber 1.
  • the gas chamber 1 is connected to the pressurized water channel 3 through a connecting tunnel 2, and the periphery and the top of the gas chamber 1 are constituted by a sealed cover 4 having a bottom open, and the closed cover 4 is used to close the air cushion 7 formed in the air chamber 1.
  • the gas can avoid the shortage of large air leakage in the air cushion type pressure regulating chamber due to the large leakage of the surrounding rock, and reduce the leakage of the air cushion type pressure regulating chamber to the surrounding rock.
  • a pressure difference is formed between the inner and outer sides of the cover body 4.
  • a flat pressure pipe network 9 communicating with the water pad 8 is disposed along the outer side of the periphery of the cover 4 and the top of the top portion, and is arranged at intervals and with the flat pipe network 9
  • the connected flat pressure tube 10 penetrates into the bedrock outside the shell 4.
  • the venting of the water body in the air chamber 1 is also facilitated during the venting of the water diversion building, and the bottom plate 11 of the air chamber 1 is set higher than the top of the connecting tunnel 2.
  • the cover 4 can be made of a variety of materials, such as steel plates, rubber, plastics, composite layer materials, etc.
  • the cover 4 is a seal-welded metal plate as the core layer 5, and the core layer 5 is provided with reinforcing bars inside and outside.
  • Reinforced concrete acts as a sealing gas by fixing the steel plate and accepting the pressure difference between the inside and outside of the gas caused by the discarded or increased load of the unit.
  • the core layer 5 made of steel plate is combined with the reinforced concrete support layer 6 to function as a closed gas.
  • a gas seal layer may be disposed on the inner side of the cover body 4, and a structural form of the reinforced concrete support layer 6 may be disposed on the outer side of the cover body 4.
  • the gas sealing layer can be formed by spraying a polymer material, a welded steel plate or the like.
  • the planar shape of the air-cushioning surge chamber should be as simple as possible to facilitate the placement of the flat pressure system, the simplest of which is strip shape.
  • the cross section of the shell 4 is preferably a gate hole shape, that is, the cross section is inverted U-shaped, and the width and height are generally narrow and high, because the height is increased, the stable section can be reduced, and under the same initial water level condition, The effective gas volume ratio can be increased, thereby reducing the total excavation amount of the air cushion surge chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

Salle à réglage de pression à coussin d'air de couverture permettant de limiter à la fois un bélier hydraulique et une fluctuation d'air par haute pression. Le coussin d'air (7) et le coussin d'eau (8) sont formés dans une cellule hermétique à l'air (1), laquelle est reliée à un conduit de tête (3) par un tunnel commun (2) et la périphérie et le haut de la cellule (1) sont constitués au moyen d'une couverture de pression hermétique à l'air (4) avec un fond ouvert, de sorte que le gaz de ladite cellule (1) puisse bénéficier d'une étanchéité efficace. La salle considérée est utilisée dans une situation géologique de rocher avec pénétration accrue.
PCT/CN2007/001956 2006-06-29 2007-06-22 Salle à réglage de pression à coussin d'air de couverture WO2008003228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006100212960A CN100458021C (zh) 2006-06-29 2006-06-29 罩式气垫式调压室
CN200610021296.0 2006-06-29

Publications (1)

Publication Number Publication Date
WO2008003228A1 true WO2008003228A1 (fr) 2008-01-10

Family

ID=37583006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/001956 WO2008003228A1 (fr) 2006-06-29 2007-06-22 Salle à réglage de pression à coussin d'air de couverture

Country Status (2)

Country Link
CN (1) CN100458021C (fr)
WO (1) WO2008003228A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100458021C (zh) * 2006-06-29 2009-02-04 中国水电顾问集团成都勘测设计研究院 罩式气垫式调压室
CN100462505C (zh) * 2006-12-28 2009-02-18 吴昊 水电站调压室结构
CN101126233B (zh) * 2007-08-17 2010-07-21 黄河勘测规划设计有限公司 复阻抗式水电站调压室结构
CN105332363B (zh) * 2015-11-23 2017-03-15 重庆交通大学 一种可调压力芯袋式气垫调压室
CN107747300B (zh) * 2017-11-20 2023-11-07 中国电建集团成都勘测设计研究院有限公司 用于引水发电工程的引水系统
CN110080926B (zh) * 2019-05-05 2024-05-07 黄河勘测规划设计研究院有限公司 增加发电水头的冲击式水轮机组结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095423A (en) * 1977-05-05 1978-06-20 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power
CN2242266Y (zh) * 1995-10-06 1996-12-11 曾祥炜 水电站压力管道梭式调压器
JPH093865A (ja) * 1995-06-16 1997-01-07 Souma Eng:Kk 袋体バルブ式密閉型調圧水槽
CN1884706A (zh) * 2006-06-29 2006-12-27 中国水电顾问集团成都勘测设计研究院 罩式气垫式调压室
CN2918538Y (zh) * 2006-06-29 2007-07-04 中国水电顾问集团成都勘测设计研究院 罩式气垫式调压室

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253032A (en) * 1978-12-13 1981-02-24 Lochner Johannes P A Utilization of wave motion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095423A (en) * 1977-05-05 1978-06-20 Alexander Moiseevich Gorlov Apparatus for harnessing tidal power
JPH093865A (ja) * 1995-06-16 1997-01-07 Souma Eng:Kk 袋体バルブ式密閉型調圧水槽
CN2242266Y (zh) * 1995-10-06 1996-12-11 曾祥炜 水电站压力管道梭式调压器
CN1884706A (zh) * 2006-06-29 2006-12-27 中国水电顾问集团成都勘测设计研究院 罩式气垫式调压室
CN2918538Y (zh) * 2006-06-29 2007-07-04 中国水电顾问集团成都勘测设计研究院 罩式气垫式调压室

Also Published As

Publication number Publication date
CN100458021C (zh) 2009-02-04
CN1884706A (zh) 2006-12-27

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