EP0143612A2 - Absperrschieber für Bassin zum Wellenreiten - Google Patents

Absperrschieber für Bassin zum Wellenreiten Download PDF

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Publication number
EP0143612A2
EP0143612A2 EP84308105A EP84308105A EP0143612A2 EP 0143612 A2 EP0143612 A2 EP 0143612A2 EP 84308105 A EP84308105 A EP 84308105A EP 84308105 A EP84308105 A EP 84308105A EP 0143612 A2 EP0143612 A2 EP 0143612A2
Authority
EP
European Patent Office
Prior art keywords
valve
foot
plane
leg
seal members
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.)
Withdrawn
Application number
EP84308105A
Other languages
English (en)
French (fr)
Other versions
EP0143612A3 (de
Inventor
Robert P. Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wavetek International Inc
Original Assignee
Wavetek International Inc
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 Wavetek International Inc filed Critical Wavetek International Inc
Publication of EP0143612A2 publication Critical patent/EP0143612A2/de
Publication of EP0143612A3 publication Critical patent/EP0143612A3/de
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/0006—Devices for producing waves in swimming pools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general

Definitions

  • the present invention relates to surf pools and particularly to valves used in surf pools for rapidly releasing relatively large quantities of water to create surf.
  • the patent to Dexter shows a reservoir at the deep end of a pool that may be in communication below the water surface with the water in the pool.
  • a large gate may be rapidly opened or closed to create or cut off, respectively, the communication between the reservoir and the pool.
  • the gate When the gate is closed, water is pumped into the reservoir to a level above that of the water in the pool.
  • water flows downward in the reservoir and upward into the pool creating a wave. The gate is then closed and the process repeated.
  • the hydraulic cylinder is always submerged and therefore subjected to the chlorinated water of the pool.
  • the fluid in the hydraulic cylinder can leak, contaminating the pool water. Any maintenance work to be performed on the hydraulic actuator must be performed underwater or the pool must be drained. Since the typical surf pool contains several million gallons of water, draining and refilling the pool is exceedingly expensive and time consuming. Both of these valve constructions require the lifting of the entire weight of the valve by the cylinder. Therefore only a hydraulic cylinder is sufficiently powerful to open these valves.
  • a gate valve for surf pools is devised that allows rapid opening for quick discharge of large volumes of water.
  • the inventive valve may be operated by a pneumatic actuator so that contamination of the pool water may be avoided.
  • the actuator may be serviced above water without draining the pool.
  • the inventive valve has a coated steel frame that may be set in a chamber in a reservoir or a surf pool.
  • a foot is mounted on legs that pivotally depend from the upper part of the frame.
  • the frame includes a horizontal support for an actuator to pivot the legs and foot to open the valve.
  • the moving valve parts may be lightweight and the foot is streamlined to reduce the resistance to its movement through the water.
  • the actuator may be pneumatic, avoiding the possibility of hydraulic oil contamination of pool water.
  • the actuator is placed on the frame at a level above the quiescent level of the pool water, permitting servicing of the actuator without draining the pool.
  • the valve may also include a throat assembly for setting directly on the chamber floor. The foot engages that throat assembly and compresses a gasket to establish a liquid-tight seal. The foot and throat are shaped so that the pressure of water above the foot enhances the quality of the seal between the foot and throat assembly.
  • FIG. 1 an embodiment of a gate valve 1 according to the invention is schematically shown in side view.
  • the valve is placed within a chamber 3 having a front wall 5 facing the surf pool and an opposing rear wall 7.
  • Chamber 3, which is made of concrete or like material, has side walls that have been removed from the figure for clarity.
  • the side supports that form part of valve 1 are also not shown in Figure 1.
  • Chamber 3 has an opening 9 in its bottom wall 11 which is closed by the foot 13 of valve 1.
  • foot 13 rests on a throat having front and rear elements 15 and 16, respectively.
  • the throat also has side elements not shown in Figure 1 and fits around and over the periphery of opening 9.
  • Foot 13 is attached to a leg 17 of valve 1 that is pivotally attached to a support 19.
  • An actuator 21 mounted on a shelf 22, supported by the side supports not shown in the figure, can push on leg 17 to pivot foot 13 off the throat to open the valve, as indicated in phantom lines, and establish communication between chamber 3 and a chamber 23 lying below chamber 3.
  • Chamber 23 leads to a surf pool and includes a deflector 25 at its outlet to create surf in the manner disclosed in the patent to Dexter.
  • the quiescent water level 27 in the pool is indicated in the drawing as if valve 1 were open.
  • a pipe 29 is connected to the outlet of a pump that pumps into chamber 3 water drawn from the pool. When valve I is closed, the water level in the chamber 3 rises, creating a hydraulic head.
  • valve I When valve I opens, the head pushes a large volume of water rapidly through the conduit between chambers 3 and 23 and across deflector 25 generating a surf wave.
  • actuator 21 When the head is created, actuator 21 may be submerged, but as shown in Figure I, actuator 21 is above the quiescent water level of the surf pool.
  • Figure 2 is a rear view, that is a view toward the surf pool, of an embodiment of a valve according to the invention.
  • Chamber 3 in which the valve is located has opposing side walls 31 and 33 which contain passageways 35 and 37, respectively, for communication between like chambers on either side of chamber 3.
  • An upper horizontal member 39 which may be an I-beam, is supported at either side of the chamber, along walls 31 and 33 by vertical supports 41 and 43. These supports are connected to beam 39 by conventional means through angle brackets 45 and 47, respectively.
  • Supports 41 and 43 are fastened to walls 31 and 33 by conventional means and rest on piers 49 and 51, respectively.
  • Brackets 53 and 55 are fastened to vertical supports 41 and 43, respectively, to support a second horizontal frame member 57 that lies to the front, i.e., on the same side as the surf pool, of leg 17.
  • the valve embodiment illustrated includes a leg 17 and a symmetrically located leg 59. Each leg terminates at its upper end in a clevis 61 and 63, respectively. Pins 65 and 67, pivotally connect clevises 61 and 63 to flanges 69 and 71, respectively, that depend from member 39. If member 39 is an I-beam, it is preferred to weld webs 73 and 75 between the flanges of the beam directly above flanges 69 and 71 to add strength to the beam. Like webs are welded into the beam on the side not visible in Figure 2. Additional reinforcing is provided by a generally horizontal strut 77 spanning and joined to legs 17 and 59. Diagonal struts 79, 81, 83 and 85, which may be made of angle brackets, are welded between strut 77 and the valve legs to give the assembly additional strength for moving through a large volume of water.
  • foot 13 which is moved to open and close the valve.
  • the rear member 16 of the valve throat is also visible in Figure 2.
  • the ends of foot 13 include fins 87 and 89, respectively, to aid sealing of the valve against the side members, 91 and 93 of the valve throat.
  • FIG. 3 A sectional side view of the valve embodiment of Figure 2 taken along section line AA appears in Figure 3 to aid understanding of the embodiment.
  • bracket 53 can be seen supporting member 57, a tube of rectangular cross section. Shelf 22, formed of L brackets supporting a flat surface shelf, is fastened to member 57 by conventional means.
  • Actuator 21 is pivotally fastened to shelf 22 by conventional means such as pivot pins.
  • a shaft 95 of actuator 21 may be forced outward, to the left in Figure 3.
  • the end of shaft 95 is pivotally attached to a block 97 that rests against and pushes against strut 77.
  • actuator 21 When actuator 21 is activated, shaft 95 pushes the pivotable assembly of the valve so that foot 13 is pivoted, clockwise in Figure 3, off the throat assembly opening the valve.
  • the force of gravity causes foot 13 to return to the valve throat to close the valve.
  • Foot 13 is shown in sectional view in Figure 3.
  • foot 13 is preferably hollow and sealed against intrusion of water.
  • the hollow construction reduces the mass of the moving parts of the gate valve and, therefore, the energy needed to open the valve. That is, legs 17 and 59 are preferably tubing of rectangular cross section that protrudes into foot 13.
  • Foot 13 is stiffened at the end of each leg by C shaped stiffeners 99 and 101.
  • Foot 13 may be formed from steel shapes, welded together to form the shape shown in Figure 3.
  • a generally flat sheet with turned edges generally perpendicular to the sheet forms the bottom 103 of the foot.
  • Relatively narrow sections 105 and 107 forming the front and rear of the foot, respectively, are part of oblique sections 109 and I11, respectively.
  • the oblique sections 109 and III terminate in flat sections 113 and 114, respectively, cut to receive the legs. Sections 113 and 114 are supported by and welded to stiffeners 99 and 101 to form the top of foot 13. As indicated in Figure 3, bottom 103 of foot 13 is not perpendicular to leg 1 7 . Rather, bottom 103 is lower with respect to floor 11 of chamber 3 near rear wall 7 than at the front side of the valve.
  • the front element 15 of the throat is much taller than the rear element 16.
  • the weight of the water above the foot when the valve is closed produces a net force component that urges the foot against the throat to enhance the sealing of the valve.
  • the oblique surfaces 109 and III also reduce the drag on foot 13 as it moves through water in chamber 3 either to open or close the valve.
  • Compressible gaskets aid in sealing the valve.
  • These gaskets may be conventional "tadpole" gaskets formed of a hollow cylinder with a dependent flange for attachment to a surface.
  • a gasket li5 is shown mounted on the top of throat member 16 for compression by the bottom 103 of foot 13 and another gasket ll7 is mounted on the rear surface of throat member 15 for compression by the front surface 105 of foot 13.
  • An additional gasket arrangement provides seals at the ends of foot 13.
  • an end portion of the throat and an end portion of foot 13 are shown separated to illustrate the end seal.
  • End 93 of the throat is shown.
  • An opposite end 91 completes the perimeter of the throat.
  • Throat end 93 tapers from a narrow width at its rear edge, which is flush with element 16, to a wider width at its front edge, which is flush with front throat element 15.
  • end 93 carries a gasket 121.
  • Fin 89 projects from the end of foot 13 at such an angle that as the valve closes, fin 89 engages and compresses gasket 121.
  • fin 89 does not tear or abrade gasket 121 so that the fin and gasket provide a reliable seal when the valve is closed.
  • the fin arrangement is preferred because it adds little drag to the movement of the foot through water.
  • valve embodiment Installation of the valve embodiment is relatively simple.
  • the concrete chamber is poured to accept the valve.
  • the throat assembly is attached to the floor of the chamber around the periphery of the conduit leading out of the bottom of the chamber.
  • the remainder of the valve assembly can then be lowered into the chamber and positioned so that the valve operates as desired.
  • the valve is anchored to the piers and chamber walls.
  • the elements of the valve be made of steel since many preform shapes are readily available and the special shapes in the valve may be welded from plates of steel. In order to protect the steel from the chlorinated pool water, all exposed surfaces are coated with commercially available epoxy passivating paint. Unlike many known valves, the entire weight of the valve need not be lifted in order to open the valve. Instead, the valve needs only to be pushed on its pivot to be opened. In addition, the lightweight and streamlined design of the gate valve permits it to be opened and closed with a pneumatic rather than a hydraulic cylinder, eliminating any danger of contamination of the pool water with hydraulic oil. By choosing the location of shelf 22 to be above the quiescent water level in the chamber, all moving parts of the valve can be serviced, above water, without draining the pool.
  • valve An example of a valve according to the invention has been constructed.
  • the example included a conduit 9 approximately 9 feet wide by 3 and one half feet across.
  • the valve assembly was approximately 10 feet high.
  • the valve could be opened or closed by a pneumatic actuator in 1.25 seconds. In a cycle including a 0.5 second dwell time, the valve was capable of discharging over 60,000 gallons of water while maintaining some hydraulic head.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Sliding Valves (AREA)
EP84308105A 1983-11-30 1984-11-22 Absperrschieber für Bassin zum Wellenreiten Withdrawn EP0143612A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55630383A 1983-11-30 1983-11-30
US556303 1983-11-30

Publications (2)

Publication Number Publication Date
EP0143612A2 true EP0143612A2 (de) 1985-06-05
EP0143612A3 EP0143612A3 (de) 1985-07-17

Family

ID=24220765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84308105A Withdrawn EP0143612A3 (de) 1983-11-30 1984-11-22 Absperrschieber für Bassin zum Wellenreiten

Country Status (8)

Country Link
EP (1) EP0143612A3 (de)
JP (1) JPS61500563A (de)
KR (1) KR850004795A (de)
AU (1) AU3675184A (de)
BR (1) BR8407194A (de)
IL (1) IL73747A0 (de)
WO (1) WO1985002449A1 (de)
ZA (1) ZA849247B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11534672B2 (en) 2016-11-08 2022-12-27 Ka'ana Wave Company Inc. Wave producing method and apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1168579A (en) * 1914-08-17 1916-01-18 California Corrugated Culvert Company Flood-gate.
US1409398A (en) * 1920-03-18 1922-03-14 Daniel C Mulvihill Sand gate
US2027455A (en) * 1932-01-25 1936-01-14 Seibt Max Check valve
US3025677A (en) * 1956-12-11 1962-03-20 W O Hanahan Flood gates
US3060961A (en) * 1960-09-19 1962-10-30 Edwin E Conley Pivoted valve structure
US3350724A (en) * 1964-07-07 1967-11-07 Walter J Leigh Method and apparatus for generating artificial waves in a body of water
US3502269A (en) * 1967-09-08 1970-03-24 Duane D Robertson Automatic distributor valve mechanism for lawn sprinkling systems
US3473334A (en) * 1968-06-24 1969-10-21 Phillip Dexter Apparatus and method for producing waves
US3629877A (en) * 1969-08-07 1971-12-28 Siegfried A Schuster Method and apparatus for wave formation in swim pools
US3793534A (en) * 1972-03-27 1974-02-19 G Richard Method of surf generation
DE2538302C3 (de) * 1975-08-28 1981-10-29 Hans Friedrich Ing.(grad.) 3257 Springe Rupprath Schwimmbecken mit einem auf und ab beweglichen Körper zur Wellenerzeugung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11534672B2 (en) 2016-11-08 2022-12-27 Ka'ana Wave Company Inc. Wave producing method and apparatus

Also Published As

Publication number Publication date
EP0143612A3 (de) 1985-07-17
JPS61500563A (ja) 1986-03-27
ZA849247B (en) 1985-07-31
IL73747A0 (en) 1985-03-31
WO1985002449A1 (en) 1985-06-06
AU3675184A (en) 1985-06-13
BR8407194A (pt) 1985-11-05
KR850004795A (ko) 1985-07-27

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19860108

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Effective date: 19870115

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Effective date: 19890531

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Inventor name: MILLER, ROBERT P.