[특허]Pressure biased shuttle valve

[미국특허] Pressure biased shuttle valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05D-011/02
출원번호	US-0653415 (2000-09-01)
발명자 / 주소	Hope Rodney C. Hollister F. Harold
출원인 / 주소	Gilmore Valve Company
대리인 / 주소	Blackwell Sanders Peper Martin
인용정보	피인용 횟수 : 77 인용 특허 : 4

초록 ▼

The pressure biased shuttle valve assembly in the pressure biased shuttle valve operates in conjunction with a remote operated vehicle (ROV) to actuate blow-out preventers and thus shut in the well during emergency situations. The pressure biased shuttle valve assembly opens in response to fluid pressure from the ROV. It requires little or no flow to open. These pressure biased shuttle valves are typically located subsea on a lower marine riser platform (LMRP). These platforms are sometimes brought to the surface for a periodic testing and maintenance. The pressure biased shuttle valve assembly is also used as a repair kit which facilitates easy maintenance and repair when the LMRP is brought to the surface. In one embodiment, the shuttle is rigidly connected to a piston rod. In another embodiment, there is a flexible connection between the piston rod and shuttle. The purpose of the flexible connection is to encourage a better seal in smaller size valves.

대표청구항 ▼

[ What is claimed is:] [1.]1. A valve to direct fluid flow from two different pressurized fluid sources through the valve to a downstream apparatus, the valve comprising:a body having a pair of opposing coaxial adapter ports, a transverse function port, and a passageway allowing fluid communication between all of the ports, each adapter port in fluid communication with one of the fluid sources and the function port in fluid communication with the downstream apparatus;an adapter threadibly engaging one of said adapter ports, the adapter having a first valve seat on one end and a inlet port on the other end, with a bore in between to permit fluid flow from the inlet port past the first valve seat;a pressure biased shuttle assembly including;i. an elongate tubular adapter engaging the other adapter port, the elongate tubular adapter having a second valve seat on one end and an inlet port on the other end with a central bore in between to permit fluid flow from the inlet port past the second valve seat;ii. an elongate shuttle coaxial with the first valve seat and the second valve seat, the shuttle slidably moving from alternative sealing engagement with the first valve seat to sealing engagement with the second valve seat;iii. a piston traveling in said elongate tubular adapter, the piston having a diameter larger than a diameter of said shuttle and the piston having a central aperture to allow fluid to flow from the inlet port on the elongate tubular adapter through the central bore in the elongate tubular adapter past the second valve seat;iv. an elongate piston rod passing through the central aperture in the piston, the rod connected on one end to said shuttle and having an enlarged valve on the other end, the enlarged valve engaging a valve seat on the piston to selectively block fluid flow through the central bore in the elongate tubular adapter; andv. a spring positioned in the elongate tubular adapter in contact with the piston and surrounding a portion of the piston rod, the spring selectively urging the piston and the valve seat into sealing engagement with the valve of the piston rod in response to fluid pressure in the inlet port of the elongate tubular adapter.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

Sarlls ; Jr. Edward C. (Alief TX), Cushioned shuttle valve.
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Simko Aladar O. (Dearborn Heights MI), Fuel flow control valve assembly.
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Hendrickson Richard C. (St. Charles MO), Pressure-biased shuttle valve.
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Boyd Andrew B. (Houston TX), Shuttle valve assembly.
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이 특허를 인용한 특허 (77) 인용/피인용 타임라인 분석

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[미국특허] Pressure biased shuttle valve 원문보기

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[미국특허] Pressure biased shuttle valve 원문보기

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