EP2832930A1 - Système redondant d'exploitation des grilles de déversoir - Google Patents

Système redondant d'exploitation des grilles de déversoir Download PDF

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Publication number
EP2832930A1
EP2832930A1 EP13179070.1A EP13179070A EP2832930A1 EP 2832930 A1 EP2832930 A1 EP 2832930A1 EP 13179070 A EP13179070 A EP 13179070A EP 2832930 A1 EP2832930 A1 EP 2832930A1
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EP
European Patent Office
Prior art keywords
water
turbine
dam
hydraulic
spillway
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.)
Granted
Application number
EP13179070.1A
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German (de)
English (en)
Other versions
EP2832930B1 (fr
Inventor
Hans Ingfält
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Fortum Oyj
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Fortum Oyj
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Publication date
Application filed by Fortum Oyj filed Critical Fortum Oyj
Priority to EP13179070.1A priority Critical patent/EP2832930B1/fr
Publication of EP2832930A1 publication Critical patent/EP2832930A1/fr
Application granted granted Critical
Publication of EP2832930B1 publication Critical patent/EP2832930B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/205—Barrages controlled by the variations of the water level; automatically functioning barrages
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/40—Swinging or turning gates
    • E02B7/42—Gates of segmental or sector-like shape with horizontal axis

Definitions

  • the present invention relates to spillway gates used for dams, especially regulation dams for hydro power plants, water reservoirs etc. More precisely the present invention relates to a redundant system for operating spillway gates in a dam in which the spillway gates are provided by hydraulic cylinders connected through a hydraulic circuit to a pump arranged to feed hydraulic fluid through hydraulic pipelines from a fluid tank to the hydraulic cylinders of the spillway gates to open said spillway gates when necessary.
  • the major goal of the invention is how the spillway can be opened in an emergency situation so that a dam failure is avoided.
  • Publication KR 2008099950A describes a system for floodgates in which system the gate is moved by one or two hydraulic motors engaged to transferring elements provided at the side edges of the gate.
  • the gate may be arranged to operate automatically and/or manually.
  • the objective of the present invention is to provide a novel and improved redundant system for operating spillway gates.
  • the invention is mainly characterized in that the hydraulic pump is mechanically connected to a water turbine to which water from the dam is arranged to be led when the water level behind the dam rises above an accepted level, whereby the water flowing to the turbine starts to rotate said turbine and therewith the hydraulic pump feeding the hydraulic cylinders with hydraulic pressure to lift and open the spillway gates.
  • the system for feeding water to the turbine comprises a well arranged in connection with the spillway gates, the interior of which well is provided with a vertical wall dividing the well into an inlet section connected to the water in the dam through a pipeline and a discharge section from which water is discharged through a discharge channel, whereby the turbine is arranged in the discharge channel to be rotated by the discharging water.
  • the height of the vertical wall is set to the accepted water level in the dam, whereby water flows over the vertical wall from the inlet section of the well to the discharge section to rotate the turbine only when the water level in the dam is above the accepted water level.
  • water is fed from the dam to the turbine through a pipeline provided with a manually operated shut-off valve.
  • the pipeline is further provided with a pipe loop bypassing the shut-off valve. Said pipe loop extends in the vertical direction up to the accepted water level in the dam.
  • the hydraulic pump and the water turbine may be directly connected one to another by their shafts.
  • the hydraulic pump and the water turbine may be connected one to another through a fixed gear assembly arranged between the shafts of said pump and turbine.
  • the present invention provides considerable advantages over prior art. As it is clear an excess water inflow to the dam has to be discharged to avoid damages. This has to be done whether or not any current power and/or backup power is available.
  • the inventive redundant system for operating spillway gates brings along an opportunity for this.
  • Fig. 1 shows a dam 1 which is provided with a hydraulic operated spillway gate 2.
  • the type of the shown gate 2 is a radial gate provided with radial arms 5 rotatable on a horizontal axis or trunnions 6.
  • the gate 2 is rotated by the aid of hydraulic cylinders 3 the cylinder shafts 4 of which are fixed to the gate by articulated joints.
  • the gate 2 is rotated the flow or actually rush of water passing under the gate 2 helps to open and close the gate 2.
  • the rounded face of the gate 2, long radial arms 5 and trunnion bearings allow the gate to be closed with a reasonable force and power.
  • a well 10 or a corresponding vertical container is arranged in connection with the spillway gate 2.
  • the well 10 is connected to water behind the dam 1 through a pipeline 11 through which water has access to the well 10.
  • the well 10 is divided into two parts 13, 14 or sections by a vertical wall 12 so that the first part 13 of the well 10 is an inlet section 13 into which water flows through the pipeline 11.
  • the second part 14 of the well 10 is a discharge section 14 from which water is discharged through a discharge channel 16.
  • Water can flow in the well 10 from the inlet section 13 to the discharge section 14 only over the vertical wall 12.
  • the height of the vertical wall 12 is in each case set to match the accepted water level W in the dam 1. So water will flow over the vertical wall 12 from the inlet section 13 to the discharge section 14 only when the water level in the dam 1 rises over the accepted water level W.
  • the discharge channel 16 is provided with a water turbine 15 so that the water discharging from the well 10 will rotate said turbine 15.
  • the hydraulic cylinders 3 of the spillway gate 2 are provided with a hydraulic circuit comprising at least a tank 19 containing hydraulic fluid, a hydraulic pump 17 and necessary hydraulic pipelines connecting the tank 19, pump 17 and cylinders 3 with each other.
  • the hydraulic pump 17 naturally needs power and therefore the shaft 18 of the turbine 15 is directly connected to the shaft of the pump 17 so that the rotation of the turbine 15 will rotate the pump 17.
  • the water level behind the dam 1 is marked with W.
  • An accepted level for the water behind the dam 1 is defined and when the water level W rises higher water starts to flow over the vertical wall 12 in the well 10 from the inlet section 13 to the discharge section 14 and further out of the well 10 through the discharge channel 16.
  • the discharging water starts to rotate the turbine 15 and therewith the hydraulic pump 17 which feeds the hydraulic cylinders 3 of the spillway gate 2 with hydraulic pressure so that the cylinders 3 start to lift and open the spillway gate 2.
  • To limit the hydraulic pressure to an acceptable and allowed working pressure level for the hydraulic system air is or can be mixed to the draft tube side of the water turbine.
  • the gate 2 will open and it stays open until the water level W behind the dam 1 decreases to the accepted level whereby water will no longer flow over the vertical wall 12 in the well 10. At that point the flow amount of water discharging from the well starts to decrease and finally said flow is no longer rotating the turbine 15 and the hydraulic pump 17 wherefore due to the weight of the spillway gate 2 it starts to go down towards the closed position and simultaneously it forces the hydraulic fluid to flow in an opposite direction which makes also the hydraulic pump 17 and the turbine 15 to rotate in an opposite direction. This will go on until the spillway gate 2 is totally closed.
  • Fig. 1 shows further that the pipeline for the hydraulic fluid may be provided with a back pressure valve 20 before the hydraulic cylinders 3. If so is the matter the spillway gate 2 naturally cannot automatically go down even though the hydraulic pump 17 is no longer feeding the cylinders 3 with hydraulic fluid. In such case where the back pressure valve is a simple non-return valve the spillway gate 2 will stay open until the back pressure valve 20 is manually released.
  • the hydraulic circuit is provided with a back pressure valve 20, said valve may be provided with a throttling restriction so that the valve unit allows free flow in one direction, i.e. towards the cylinders 3, but a restricted flow in the other direction, i.e. towards the pump 17.
  • This type of a back pressure valve 20 may be used, especially if there is a risk that the spillway gate might fall down to the closed position too rapidly and uncontrollably when the pump 17 is no longer feeding the cylinders 3.
  • Fig. 2 shows a variation of the dam 1 of Fig. 1 provided with a hydraulic operated spillway gate 2.
  • the operating system of the spillway gate 2 is not provided with any well, but instead a pipeline 21, 24 is provided to connect the water behind the dam 1 to the turbine 15.
  • a manually operated shut-off valve 22 with a valve adjusting wheel 23 is provided in the pipeline 21, 24.
  • the pipeline 21, 24 is further provided with a pipe loop 25 bypassing the shut-off valve 22.
  • the pipe loop 25 is arranged to extend in the vertical direction up to the accepted level W of water behind the dam 1, so that when the water level rises higher water starts to flow through the pipe loop 25 to the turbine.
  • the system may be provided with a pipe-and-valve assembly (not shown) connected to atmosphere.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Hydraulic Turbines (AREA)
EP13179070.1A 2013-08-02 2013-08-02 Système redondant d'exploitation des grilles de déversoir Active EP2832930B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13179070.1A EP2832930B1 (fr) 2013-08-02 2013-08-02 Système redondant d'exploitation des grilles de déversoir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13179070.1A EP2832930B1 (fr) 2013-08-02 2013-08-02 Système redondant d'exploitation des grilles de déversoir

Publications (2)

Publication Number Publication Date
EP2832930A1 true EP2832930A1 (fr) 2015-02-04
EP2832930B1 EP2832930B1 (fr) 2017-07-12

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ID=48915906

Family Applications (1)

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EP13179070.1A Active EP2832930B1 (fr) 2013-08-02 2013-08-02 Système redondant d'exploitation des grilles de déversoir

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EP (1) EP2832930B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107217652A (zh) * 2017-04-26 2017-09-29 中国电建集团西北勘测设计研究院有限公司 一种发电站用泄水系统
CN108867579A (zh) * 2017-05-16 2018-11-23 河南宇宙阀门有限公司 升降调节降压装置及配套的水坝调压方法
CN114703812A (zh) * 2022-02-07 2022-07-05 安徽聚源水利科技液压坝制造有限公司 一种分布式网络控制合页坝

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1041291A (fr) * 1951-08-23 1953-10-22 Dispositif de décharge automatique des eaux de retenue d'un barrage
DE766020C (de) * 1941-01-09 1954-02-08 Maschf Augsburg Nuernberg Ag Antrieb fuer Wehrverschluesse zur selbsttaetigen Regelung des Wasserstandes
FR2069144A5 (fr) * 1969-11-06 1971-09-03 Ankone Hendrikus
FR2270389A1 (en) * 1974-02-27 1975-12-05 Petrissans & Cie Waterway barrage pivotal about base - has double channel water through flow onto base of control turbine
FR2594896A1 (fr) * 1986-02-27 1987-08-28 Alsthom Actionneur utilisant l'energie hydraulique d'un ecoulement a surface libre pour une manoeuvre recurrente telle que celle d'une vanne
CN1818223A (zh) * 2006-03-21 2006-08-16 李旭 不用电能的水库闸门
KR20080099950A (ko) 2007-05-11 2008-11-14 코스모스산업 주식회사 유압 레디얼 게이트와 자동보 수문으로 구성되는 수문장치
WO2009082882A1 (fr) * 2007-12-26 2009-07-09 Defu Li Porte à ouverture et à fermeture actionnées par gravité, commandée par le niveau de l'eau

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE766020C (de) * 1941-01-09 1954-02-08 Maschf Augsburg Nuernberg Ag Antrieb fuer Wehrverschluesse zur selbsttaetigen Regelung des Wasserstandes
FR1041291A (fr) * 1951-08-23 1953-10-22 Dispositif de décharge automatique des eaux de retenue d'un barrage
FR2069144A5 (fr) * 1969-11-06 1971-09-03 Ankone Hendrikus
FR2270389A1 (en) * 1974-02-27 1975-12-05 Petrissans & Cie Waterway barrage pivotal about base - has double channel water through flow onto base of control turbine
FR2594896A1 (fr) * 1986-02-27 1987-08-28 Alsthom Actionneur utilisant l'energie hydraulique d'un ecoulement a surface libre pour une manoeuvre recurrente telle que celle d'une vanne
CN1818223A (zh) * 2006-03-21 2006-08-16 李旭 不用电能的水库闸门
KR20080099950A (ko) 2007-05-11 2008-11-14 코스모스산업 주식회사 유압 레디얼 게이트와 자동보 수문으로 구성되는 수문장치
WO2009082882A1 (fr) * 2007-12-26 2009-07-09 Defu Li Porte à ouverture et à fermeture actionnées par gravité, commandée par le niveau de l'eau

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107217652A (zh) * 2017-04-26 2017-09-29 中国电建集团西北勘测设计研究院有限公司 一种发电站用泄水系统
CN108867579A (zh) * 2017-05-16 2018-11-23 河南宇宙阀门有限公司 升降调节降压装置及配套的水坝调压方法
CN114703812A (zh) * 2022-02-07 2022-07-05 安徽聚源水利科技液压坝制造有限公司 一种分布式网络控制合页坝
CN114703812B (zh) * 2022-02-07 2023-11-10 安徽聚源水务科技有限公司 一种分布式网络控制合页坝

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