US3695043A - Float container for an automatic constant downstream level gate - Google Patents

Float container for an automatic constant downstream level gate Download PDF

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Publication number
US3695043A
US3695043A US104605A US3695043DA US3695043A US 3695043 A US3695043 A US 3695043A US 104605 A US104605 A US 104605A US 3695043D A US3695043D A US 3695043DA US 3695043 A US3695043 A US 3695043A
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United States
Prior art keywords
gate
container
opening
plate
float
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Expired - Lifetime
Application number
US104605A
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English (en)
Inventor
Guy Vallet
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Cegelec SA
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Cegelec SA
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Publication date
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Publication of US3695043A publication Critical patent/US3695043A/en
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    • 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

Definitions

  • No.2 104,605 with the tailrace through an opening in the bottom of such container is provided with a slidable plate formed to enable the size of the opening to be varied
  • Int. Cl ..E02b 7/52, E02b 7/42 [58] Field of Search ..6l/25, 23, 22, 26, 27
  • This invention relates to gates for automatically controlling the flow of water in canals, streams, etc., and more particularly to control gates designed to maintain automatically a constant water level downstream therefrom.
  • Gates of the type with which this invention is concerned are essentially formed as a unit construction assembly and fitted with a sector-shaped gate apron centered on the axis of rotation of the gate, and with a sector float centered for rotation about the same axis.
  • the gate is balanced by at least one counterweight provided on the frame connecting the gate apron and the float.
  • the unit is mounted so that its axis of rotation is located at the same height as the level of the downstream water level to be controlled.
  • the sector float is immersed in a fixed container which is carefully matched in configuration to the float and which is provided at its base with an opening connecting the interior thereof with the downstream flow.
  • the aforesaid results are attained by providing the container with a sliding plate which is so designed that it can be. used to restrict the container opening so as to produce the free section required, and to seal such opening so as to allow the container to retain water and be filled to enable the carrying out of the gate balancing operations.
  • FIG. 1 is a schematic drawing of an automatic downstream constant level gate fitted with a container embodying the invention
  • FIG. 2 is an enlarged, sectional drawing showing in detail the means for restricting the container opening
  • FIG. 3 is a view similar to FIG. 2, but showing the manner in which the restricting means may be employed to completely block the container opening.
  • the automatic gate unit which is shown in its fully closed position in FIG. 1 of the drawings, comprises a frame arm 3 which extends upstream from a fulcrum 2 about which the whole of the gate unit pivots and on the outer upstream end of which is mounted a sectorshaped apron l centered on the fulcrum 2.
  • the unit also includes a hollow sector float 4 which is also centered on the pivotal axis 2 so as to be in opposing torque to the apron l.
  • the apron l coacts with a sill provided in the upstream reach to control the flow of water so that there is maintained in the downstream reach a constant level N which is the level of the fulcrum or pivot 2 of the gate.
  • the gate is fitted with a counterweight 7 which is movable along a rod 8 which itself is adjustable along the length of the frame arm 3 by moving a clamp'l6.
  • the counterweight 7 is thus movable in two directions to ensure the balancing of the gate in both the open and closed positions thereof.
  • Such adjustment of the counterweight 7 is horizontal along the arm 3 for the closed portion of the gate, and vertical along the rod 8 for the open position of the gate.
  • the gate With the gate properly balanced and completely closed, the torque generated by the hydraulic thrust on the float 4 will balance the torque generated by the weight of the gate. So long as the condition is maintained, the gate will remain closed. When, however, the downstream water level N of the downstream reach falls, the gate will automatically, immediately open to permit a larger discharge therethrough sufficient to restore the water level of the downstream reach to the level N.
  • the float 4 In order to dampen the oscillations of the gate during its operation and to shelter the float 4 from disturbances in the downstream reach at the level N, the float 4 is enclosed in a fixed container 5 which projects above the downstream water level N, and which is carefully matched in configuration to that of the float 4 so that the chamber defined thereby is only slightly greater in volume than the volume displaced by the float.
  • the container 5 is provided with a transverse slot or opening 6 affording communication between the bottom of the chamber therein and the downstream reach so that the water can flow into the container chamber and be discharged therefrom during the oscillating movements of the float 4 in the operations of the gate.
  • the opening 6 is formed by an elongated transverse space between the lower end of the downstream wall of the container and the base or bottom wall 18 of the container.
  • the base wall 18 has an extension 17 projecting downstream beyond the opening 6.
  • Adjustment of the opening 6 to effect a proper response of the gate to variations in the level N of the downstream reach is accomplished by an elongated transverse plate 9 slidably mounted on the bottom surface 10 of a transverse angle beam 19, the longitudinal side edges of which are secured by weld seams 20,20 to the outer surface of the downstream wall of the container.
  • the beam 19 is mounted on such downstream container wall so that the bottom surface 10 of the beam is substantially flush with the upper edge of the opening 6, thereby enabling the plate 9 to move past such edge and through the opening 6.
  • the plate 9 is adjustably'mounted on the lower sur-,
  • the plate 9 will be secured to the beam 19 in the manner shown in FIG. 2 of the drawings. Initially the plate will be placed in its fully opened position as shown in FIG. 2. However, if the gate then shows a tendency to oscillate or to react too rapidly to variations in the level N of the downstream reach, the nuts 13 on the bolts 11 are loosened and the plate 9 slide inwardly through the opening 6 as indicated by the dotted lines in FIG. 2. The opening of slot 6 is progressively reduced in this manner until the desired stability is obtained. The plate is then fixed in the desired adjusted position by tightening the nuts 13.
  • the' gate Before the gate is placed in operation at the site for which it was designed, either in the factory' or at the site before the water course is filled, the' gate can be balanced by reversing the position of the plate 9 as is shown in FIG. 3 of the drawings so that the offset edge portion or section 14 thereof is adjacently opposed to the slot 6. As is shown in FIG. 3, the dimensions and configurations of vthe edge portion 14 is such that it coacts with the lower edge of the downstream wall of the container 5 and the bottom wall extension 17 to maintain in position a seal 15 capable of completely blocking the slot 6. With the opening or slot 6 so sealed the gate may be balanced by moving the apron 1 to its closed positions so that the gate is related to the container 5 as shown in FIG.
  • the counterweight 7 is then moved horizontally by moving the clamp 16 along the arm 3 to a position where the gate will just remain static in its closed condition.
  • the gate is then moved to its fully open position and the level of the water is still maintained at the height of the fulcrum 2 in such open position of the gate.
  • the counterweight 7 is then moved along the rod 8 to a position at which the gate will just remain static in its open position. This second adjustment will not modify the balance of the gate when it is returned to its closed position since the counterweight has been moved during such second adjustment in a direction perpendicular to the frame 3, i.e., vertically with respect to the first adjustment in the closed position of the gate.
  • said adjusting means includes a valve member associated with said opening and movable to vary the profile thereof, means carried by said container for movably supporting said valve member and for locking said valve member in an adjusted position.
  • said adjusting means comprises a plate movable to progressively restrict said opening, means carried by said container for slidably supporting said plate and for locking said plate in an adjusted position.
  • An automatic gate as defined in claim 1 including means coactable with said adjusting means to seal said opening so as to enable said container to hold water for gate balancing operations.
  • said adjusting means comprises a plate having a flat longitudinal edge section operable to progressively restrict said opening, and an offset longitudinal edge section coactable with a sealing member to completely block said opening, and means for supporting said plate in reversible positions on said container to enable it to function as an opening adjusting means or a blocking means, said supporting means comprising a slide member fixedly secured to said container, and supporting said plate for sliding movement relative thereto, and means for reversibly and slidably connecting said plate to said slide member and operable to guide said plate in its sliding movements and to lock said plate in position on said slide member.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Barrages (AREA)
  • Level Indicators Using A Float (AREA)
  • Control Of Non-Electrical Variables (AREA)
US104605A 1970-01-13 1971-01-07 Float container for an automatic constant downstream level gate Expired - Lifetime US3695043A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7001125A FR2074818A5 (es) 1970-01-13 1970-01-13

Publications (1)

Publication Number Publication Date
US3695043A true US3695043A (en) 1972-10-03

Family

ID=9048961

Family Applications (1)

Application Number Title Priority Date Filing Date
US104605A Expired - Lifetime US3695043A (en) 1970-01-13 1971-01-07 Float container for an automatic constant downstream level gate

Country Status (5)

Country Link
US (1) US3695043A (es)
JP (1) JPS4828499B1 (es)
ES (1) ES378661A1 (es)
FR (1) FR2074818A5 (es)
GB (1) GB1272905A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4877352A (en) * 1989-02-10 1989-10-31 Waterman Industries, Inc. Method and apparatus for control of an upstream water level
US5516230A (en) * 1994-05-05 1996-05-14 Bargeron; Richard J. Gate for controlling upstream water level
WO2007147254A1 (en) * 2006-06-23 2007-12-27 Hans Christian Behm Adjustable weir for hydroelectric dam installations
WO2020069457A3 (en) * 2018-09-28 2020-06-18 Ovivo Inc. Buoyant mechanical liquid level control
US11479943B2 (en) 2018-09-28 2022-10-25 Ovivo Inc. Buoyant mechanical liquid level control
US12055961B2 (en) 2018-09-28 2024-08-06 Ovivo Inc. Level control system for a liquid filled basin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110700202B (zh) * 2019-10-17 2024-09-10 中国电建集团贵阳勘测设计研究院有限公司 一种设置于溢流堰的潜孔弧门底水封装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168117A (en) * 1935-05-14 1939-08-01 Neyret Beylier & Piccard Picte Apparatus for controlling liquid levels

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168117A (en) * 1935-05-14 1939-08-01 Neyret Beylier & Piccard Picte Apparatus for controlling liquid levels

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4877352A (en) * 1989-02-10 1989-10-31 Waterman Industries, Inc. Method and apparatus for control of an upstream water level
US5516230A (en) * 1994-05-05 1996-05-14 Bargeron; Richard J. Gate for controlling upstream water level
WO2007147254A1 (en) * 2006-06-23 2007-12-27 Hans Christian Behm Adjustable weir for hydroelectric dam installations
US20100209192A1 (en) * 2006-06-23 2010-08-19 Hans Christian Behm Adjustable weir for hydroelectric dam installations
EA014455B1 (ru) * 2006-06-23 2010-12-30 Ханс Кристиан Бем Регулируемое водосливное устройство для плотин гидроэлектростанций
CN101501277B (zh) * 2006-06-23 2011-11-23 汉斯·克里司汀·贝姆 用于水电站坝的可调堤堰
WO2020069457A3 (en) * 2018-09-28 2020-06-18 Ovivo Inc. Buoyant mechanical liquid level control
US11479943B2 (en) 2018-09-28 2022-10-25 Ovivo Inc. Buoyant mechanical liquid level control
US12055961B2 (en) 2018-09-28 2024-08-06 Ovivo Inc. Level control system for a liquid filled basin

Also Published As

Publication number Publication date
ES378661A1 (es) 1972-07-16
JPS4828499B1 (es) 1973-09-01
FR2074818A5 (es) 1971-10-08
GB1272905A (en) 1972-05-03

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