US3395541A - Shut-off plates for controlling the flow of liquids - Google Patents

Shut-off plates for controlling the flow of liquids Download PDF

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Publication number
US3395541A
US3395541A US314589A US31458963A US3395541A US 3395541 A US3395541 A US 3395541A US 314589 A US314589 A US 314589A US 31458963 A US31458963 A US 31458963A US 3395541 A US3395541 A US 3395541A
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United States
Prior art keywords
plate
plates
shut
recesses
flat
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Expired - Lifetime
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US314589A
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English (en)
Inventor
Schramm Paul
Schneider Joachim
Heidler Josef
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Aqseptence Group GmbH
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Individual
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Publication date
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Publication of US3395541A publication Critical patent/US3395541A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • E02B7/26—Vertical-lift gates
    • E02B7/28—Vertical-lift gates with sliding gates

Definitions

  • a pressure plate of cast iron for water gates includes a planar outer frame portion and an inner portion. The latter defines open recesses and intervening plateau areas, the recesses being in the shape of an inverted frustum of a pyramid and their open side co-extensive with the rectangular base of the aforementioned frustum of a pyramid.
  • This invention relates to shut-off plates :for water gates intended to be used to control the flow of liquids, and in particular the flow of water.
  • shut-off plates according to this invention are intended primarily in liquid control systems wherein a housing for the shut-off means is dispensed with.
  • the shut-off plate is provided with driving means for moving the shut-off plate along a pair of guides or rails.
  • the shut-off plate is associated with wedge means for clamping the plate against the aforementioned guides, or rails, when the shut-off plate is moved to the lower position thereof, to interrupt the flow of a liquid.
  • the shut-off plate proper is generally provided with a frame structure surrounding the same and it is this frame structure which is being clamped against the aforementioned guides, or rails, to establish a relatively tight seal.
  • shut-off plates are generally relatively bulky. If made of cast iron they comprise re-inforcing ribs to preclude, or minimize, bending of the plates under the heavy pressure of water to which they are subjected, and to prevent leakage resulting from bending of the plates. If fabricated by combining steel sections gate plates are subject to corrosion and require high cost of maintenance.
  • the aforementioned re-inforcement ribs are provided on the side of the shut-off plate opposite to the side acted upon by the pressure of water in order to preclude mud, fecies, and the like, from depositing on the re-inforcement ribs.
  • shut-off plates and their re-inforcement ribs define jointly a relatively shallow structure.
  • a conventional prior art shut-01f plate of cast iron having a width of about 32 inches and a height of about 40 inches has a weight in the order of 600 pounds, and is fractured if subjected along the center to about 22 metric tons, the area upon which this pressure is applied being equal to about 1.4 inches X 1.2 inches.
  • the bending, or deflection, which occurs imatent mediately prior to breaking of such a prior art shut-off plate is in the order of .7 inch.
  • shut-off plates require particularly heavy machinery for operating the same such as, for instance, operating spindles and operating gears.
  • Plates according to the present invention include a planar outer frame portion and an inner portion.
  • the latter is uneven in cross-section rather than flat, i.e., the inner portion has a substantially uniform wall thickness and its vertical cross-section is undulating between flat valleys and flat ridges or plateaus.
  • the pressurereceiving side or front side of the inner portion and the side thereof remote from the pressure-receiving side form trough-shaped recesses.
  • the sum total of the areas of flat plateaus on the pressure-receiving side of the inner portion of the plate is preferably smaller than the sum total of the area of the fiat plateaus of the opposite side of the inner portion of the plate.
  • FIG. 1 is a front elevation of a shut-off plate embodying the invention
  • FIG. 2 is a vertical section along 22 of FIG. 1;
  • FIG. 3 is a front elevation of another embodiment of the invention.
  • FIG. 4 is a vertical section along 44 of FIG. 3.
  • the plate shown therein is made of cast iron and has a rectangular outline.
  • Reference numeral 1 has been applied to indicate a rectangular frame surrounding the plate proper.
  • Frame 1 is intended to engage the slide surfaces, or guide surfaces (not shown) along, which the plate is movable to open, or to close, a given channel for liquids.
  • the arrows 2 of FIG. 2 indicate the direction in which the pres sure of a liquid, such as water, is acting upon the plate.
  • the side to the left of FIG. 2 is the upstream side
  • the side to the right of FIG. 2 is the downstream side.
  • the surface of the plate is uneven and its vertical cross-section is undulating between fiat valleys and flat ridges or plateaus. It is apparent from FIG. 2 that the line forming the vertical cross-section of this embodiment is made up of aligned trapezoidal shapes adding up to the aforementioned undulating geometry.
  • Reference character 3 has been applied to indicate the strips or surface elements which are situated at the pressure-receiving side or front side of the plate, and reference character 4 has been applied to indicate the strips or surface elements which are situated on the side of the plate remote from the pressurereceiving side thereof.
  • the parallel surface elements 3 and 4 are joined together to form a unitary structure by means of the slanting surface elements 5.
  • the strips or surface elements 3 on the pressure-receiving side have a width of a/Z and of a, respectively, and the Width of the strips or surface elements 4 on the rear side of the plate is b.
  • the sum total of the surface elements or strips 4 is 2b and the sum total of the surface elements or strips 3 is 2a.
  • the width b 2a. Therefore, the sum total of the areas of strips 4 is twice as large as the sum total of the areas of strips 3.
  • the sum total of the areas of strips 4 should be larger than the sum total of the areas of strips 3.
  • the sum total of the areas of strips 4 should be one times to four times as large as the sum total of the areas of strips 3.
  • the areas of strips 3 and 4 are determined in such fashion that the stresses which occur at the front side of the plate and at the rear side of the plate are substantially equal. This is of particular importance when considering plates which are fashioned of cast iron capable of being subjected to substantially equal tensile stresses and compression stresses. It may be mentioned in this connection that comparable prior art plates are subjected to different stresses on the front side and the rear side thereof when under the action of a body of Water.
  • shut-off plates of which each of both sides can be subjected selectively to the pressure of a body of water, or other liquid.
  • the Width or aggregate area of the strips on the rear side of the plate and on the front side of the plate must be equal, and the plates must be designed to withstand the highest stresses which occur when acted upon on either side by a body of water, or other liquid.
  • the plates shown in FIGS. 1-4 are provided with reinforcements 15 and re-inforcements 16 which are arranged immediately adjacent to the periphery of the plate.
  • Re-inforcements 15 are acted upon by the wedge means normally used in connection with such plates and reinforcements 16 are intended to be acted upon by the drive for the plates, i.e. to receive the drive spindles (not shown) for operating the plates.
  • FIGS. 3 and 4 illustrate a structure which is substantially identical to the structure of FIGS. 1 and 2.
  • the recesses formed on the front side and the rear side of the plates are sub-divided by transverse ribs, or fins, 11 into a plurality of subrecesses.
  • FIGS. 3 and 4 dilfers also from that shown in FIGS. 1 and 2 in that in the former the width b of the strips or surface elements 9 on the rear side of the plate is equal to the Width a of the strips or surface elements 10 on the front side of the plate.
  • the trapezoid shape of the vertical cross-section of the shut-off plates results in the formation of open recesses on the front side of the plates and the formation of open recesses on the rear side of the plates.
  • the flat bottom portions of the recesses situated on the front side of the inner portion of the plate form the fiat plateau areas of the inner portion of the rear side of the plate and the bottom portions of the recesses situated on the rear side of the inner portion of the plate form the fiat plateau areas of the inner portion of the plate on the front side thereof.
  • shutoff plate which is shown in these figures is trapezoidshaped plate in several of its horizontal cross-sections, and the vertical cross-sections of the structure shown in these figures are a series of aligned trapezoidal figures.
  • planar frame 1 is rectangular and completely surrounds the inner portion of the pressure plate.
  • the recesses in the latter are each in the shape of a frustum of a pyramid, or a truncated pyramid, each recess being surrounded by a substantially flat plateau area.
  • All fiat plateau areas of the upstream side are 4 U coextensive with the flat bottoms of the recesses on the downstream side, and vice versa.
  • All flat plateau areas of the upstream side and all flat bottom areas on the downstream side are situated in a first common plane.
  • All flat plateau areas on the downstream side and all flat bottoms of the upstream side are situated in a. second common plane parallel to, but spaced-from, said, first common plane. As shown in FIG. 2 the aforementioned second common plane is slightly spaced in'upstream direction from the plane defined by frame 1. 1
  • reference character'15 has been applied to indicate re-inforcements immediately adjacent to the peripheral portion, or frame portion, of the plate structure, their function being to transmit pressure to the plate structure to cause the latter to tightly engage its cooperating slide surfaces, or guide surfaces.
  • re-inforcements 15 must necessarily be integral with the vertical peripheral elements of the peripheral portion of the plate structure or, in other words, re-inforcements 15 must be integral with the vertical elements forming the frame of the plate structure.
  • a pressure plate for water gates for controlling the flow of liquids across channels comprising in combination an outer peripheral planar frame portion including horizontal and vertical frame elements, and a trough-defining portion entirely inside said planar frame portion, said trough-defining portion being undulating in vertical cross-section between flat valleys and flat plateaus and having substantially trapezoid-shaped horizontal crosssections, said trough-defining portion having an upstream surface and having a downstream surface each having a plurality of recesses with flat bottoms surrounded by flat plateau areas, said flat bottoms of all said recesses of said upstream surface and all said flat plateau arcs of said downstream surface being situated in a first common plane, and said flat bottoms of all said recesses of said downstream surface and said flat plateau areas of all said upstream surfaces being situated in a second common plane parallel to said first common plane, and said planar frame portion and said inner trough-defining portion being formed of cast iron.
  • a pressure plate as specified in claim 1 including reinforcement ribs inside said recesses partitioning said recesses into a plurality of sub-recesses.
  • a pressure plate for water gates for controlling the flow of liquids across channels comprising in combination an outer peripheral planar frame portion including horizontal and vertical frame elements, and an inner portion entirely inside said planar frame portion, said inner portion having a substantially uniform wall thickness and being undulating in vertical cross-section between flat valleys and flat plateaus, said inner portion having an upstream surface and a downstream surface, both said upstream surface and said downstream surface defining recesses each having the shape of a frustum of a pyramid and each having a flat bottom, both said upstream surface and said downstream surface defining flat plateau areas surrounding said recesses, said flat bottom of each of said recesses of said upstream surface and each of said flat plateau areas of said downstream surface being situated in a first common plane, and said flat bottom of each of said recesses of said downstream surface and each of said flat plateau areas of said upstream surface being situated in a second common plane parallel to said first common plane, and said planar frame portion and said inner portion being formed of cast iron.
  • a pressure plate structure of cast iron for water gates for controlling the flow of liquids across channels comprising in combination an outer peripheral planar frame portion including horizontal and vertical frame elements and an inner portion entirely inside said frame portion, said inner portion having a substantially uniform wall thickness defining on the pressure receiving side thereof a first plurality of open recesses having fiat bottoms and surrounded by substantially flat plateau areas and said inner portion defining on the side thereof remote from said pressure receiving side a second plurality of open recesses having flat bottoms and surrounded by substantially flat plateau areas, the sum of the areas of said bottoms of said first plurality of recesses being larger than the sum of the areas of said bottoms of said second plurality of recesses, each of said first plurality of recesses and each of said second plurality of recesses being substantially in the shape of an inverted truncated pyramid having a rectangular base and being open at said rectangular base, each of said flat bottoms of said first plurality of recesses being situated in a first common plane and each of said flat bottoms of said second plurality
  • a shut-off pressure plate for water gates for controlling the fiow of liquids across channels said plate including an outer peripheral planar frame portion defining a plane and having horizontal and vertical frame elements and an inner portion entirely inside said planar frame portion, said inner portion having a substantially uniform wall thickness and being undulating in the vertical cross-section between fiat valley areas and fiat plateau areas, said inner portion defining a first plurality of open trough-shaped recesses having flat rib-reinforced bottoms on the pressure-receiving side of said inner portion and said inner portion defining a second plurality of open trough-shaped recesses having flat rib-reinforced bottoms on the side of said inner portion remote from said pressure-receiving side, said flat plateau areas on said pressure-receiving side of said inner portion surrounding said first plurality of recesses and being arranged in a first common plane with all said bottoms of said second plurality of recesses, said fiat plateau areas on said side of said inner portion remote from said pressure-receiving side thereof

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Barrages (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US314589A 1962-10-05 1963-10-03 Shut-off plates for controlling the flow of liquids Expired - Lifetime US3395541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP0030306 1962-10-05

Publications (1)

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US3395541A true US3395541A (en) 1968-08-06

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US314589A Expired - Lifetime US3395541A (en) 1962-10-05 1963-10-03 Shut-off plates for controlling the flow of liquids

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US (1) US3395541A (de)
AT (1) AT256726B (de)
CH (1) CH418758A (de)
DE (1) DE1459426A1 (de)
GB (1) GB1055435A (de)
LU (1) LU44492A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108487195A (zh) * 2018-06-08 2018-09-04 中国电建集团贵阳勘测设计研究院有限公司 一种小孔口整体铸造式平面滑动检修闸门

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28201A (en) * 1860-05-08 Gate fob canal-locks
US558436A (en) * 1896-04-14 Metallic tunnel
US868489A (en) * 1907-01-12 1907-10-15 Douglas W Ross Gate for waterways.
US1275499A (en) * 1916-12-19 1918-08-13 California Corrugated Culvert Company Radial head-gate.
US1757813A (en) * 1927-02-25 1930-05-06 Commercial Shearing Tunnel liner
GB371869A (en) * 1929-12-27 1932-04-29 Gijsbert Theodorus Visser Floodgates and gates of pile iron for weirs and locks
US1967489A (en) * 1931-12-11 1934-07-24 Truscon Steel Co Tunnel liner
US2643521A (en) * 1951-09-06 1953-06-30 Rodney Hunt Machine Co Sluice gate seal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28201A (en) * 1860-05-08 Gate fob canal-locks
US558436A (en) * 1896-04-14 Metallic tunnel
US868489A (en) * 1907-01-12 1907-10-15 Douglas W Ross Gate for waterways.
US1275499A (en) * 1916-12-19 1918-08-13 California Corrugated Culvert Company Radial head-gate.
US1757813A (en) * 1927-02-25 1930-05-06 Commercial Shearing Tunnel liner
GB371869A (en) * 1929-12-27 1932-04-29 Gijsbert Theodorus Visser Floodgates and gates of pile iron for weirs and locks
US1967489A (en) * 1931-12-11 1934-07-24 Truscon Steel Co Tunnel liner
US2643521A (en) * 1951-09-06 1953-06-30 Rodney Hunt Machine Co Sluice gate seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108487195A (zh) * 2018-06-08 2018-09-04 中国电建集团贵阳勘测设计研究院有限公司 一种小孔口整体铸造式平面滑动检修闸门
CN108487195B (zh) * 2018-06-08 2024-04-23 中国电建集团贵阳勘测设计研究院有限公司 一种小孔口整体铸造式平面滑动检修闸门

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Publication number Publication date
AT256726B (de) 1967-09-11
CH418758A (de) 1966-08-15
GB1055435A (en) 1967-01-18
DE1459426A1 (de) 1969-01-09
LU44492A1 (de) 1963-12-08

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