[특허]Quarter turn rotatable flow control valve

Quarter turn rotatable flow control valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-005/06 F16K-005/10
출원번호	US-0257104 (1994-06-08)
발명자 / 주소	Davis Ronald W. (Tomball TX)
출원인 / 주소	Daniel Industries, Inc. (Houston TX 02)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

A rotatable flow control valve mechanism is provided having a valve body having a valve chamber and straight through flow passages intersecting the valve chamber. A rotatable valve element, which may be of straight, spherical or tapered configuration, is positioned for rotation within the valve chamber and is sealed with respect to the valve body by sealing elements that surround the flow passages. The rotary valve element defines a straight through flowway that is aligned with the flow passages of the valve body in the fully open condition of the valve and permits unobstructed flow through the valve and, when the flowway has a dimension at least as great as the dimension of the flow passage, permits objects such as pigs and scrapers to pass through the valve. For flow controlling activity the rotary valve element defines flow controlling passages in the form of holes or contoured slots which intersect the flowway and the outer peripheral surface thereof and incorporates anti-cavitation and noise abatement trim. The ratio of flow control slot length to flowway diameter is in the range of from 2.0 to 1.0 to 4.0 to 1.0 and is determinative of valve diameter. The noise abatement and anti-cavitation trim may be located at least partially within the flowway as well. The rotary valve element is of sufficient diameter relative to the diameter of the flowway that rotational movement between the fully open and fully closed positions is achieved in about 90°. The flow control valve may also be of the top entry variety, thus permitting it to be repairable while installed in a flow line.

대표청구항 ▼

A rotatable flow control valve, comprising: (a) a valve body defining a valve, chamber and inlet and outlet flow passages in communication with said valve chamber and having a common longitudinal axis; (b) valve seat means being located within said valve chamber and establishing sealing with said valve body about respective inlet and outlet passages; (c) a rotary valve element being positioned for rotation within said valve chamber about an axis of rotation disposed in substantially normal relation with said common longitudinal axis and having an annular external sealing surface disposed in sealing engagement with said valve seat means, said rotary valve plug further defining a substantially straight flowway therethrough being positionable in the fully open position of said rotary valve element in substantially coextensive straight through relation with said inlet and outlet passages, said rotary valve element also defining at least one contoured flow control passage having a varying dimension along the length and depth thereof, said rotary valve element also defining opposed blocking surface areas being opposed portions of said annular external sealing surface and being offset substantially 90°from said flowway and being offset substantially 180°apart; and (d) anti-cavitation and noise abatement means being located within said at least one flow control passage and defining a torturous path through which fluid must flow.

이 특허를 인용한 특허 (24)

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Ambrosina, Jesse E.; Powers, Benjamin G.; Segit, Alexander J., Fluid flow regulator assembly.
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Mielenz, Holger; Nordbruch, Stefan, Method and device for ascertaining a parking position for a vehicle.
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Jacobs, Scott; Heren, Lawrence P., Pistol grip hose nozzle with proportional flow control.
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Hall,Ola, Plug valve having high flow resolution.
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Joseph, III,Thomas Anthony, Rotary valve.
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Caprera, Brian J., Seal cartridge control valve.
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Ruta Constantin I. ; McKown Alan G. ; Blette Russell E. ; Petrie Robert M., Spray assembly for high viscosity materials.
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Partridge,Charles C.; Carroll,Clayton L., Valve assembly and method with slotted plates and spherical ball plug.
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Schneider Hermann-Josef,DEX, Water valve for a sanitary fitting.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Quarter turn rotatable flow control valve 원문보기

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Quarter turn rotatable flow control valve 원문보기

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이 특허를 인용한 특허 (24)

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