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Hydraulic High Pressure Valve Controller Using the In-Situ Pressure DifferenceA hydraulic valve controller that uses an existing pressure differential as some or all of the power source for valve operation. In a high pressure environment, such as downhole in an oil or gas well, the pressure differential between the inside of a pipe and the outside of the pipe may be adequately large to drive a linear slide valve. The valve is operated hydraulically by a piston in a bore. When a higher pressure is applied to one end of the bore and a lower pressure to the other end, the piston moves in response to the pressure differential and drives a valve attached to it. If the pressure differential is too small to drive the piston at a sufficiently high speed, a pump is provided to generate a larger pressure differential to be applied. The apparatus is conveniently constructed using multiport valves, which can be rotary valves.
Document ID
20160005719
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Bao, Xiaoqi
Sherrit, Stewart
Badescu, Mircea
Bar-Cohen, Yoseph
Hall, Jeffery L.
Date Acquired
May 2, 2016
Publication Date
April 19, 2016
Subject Category
Mechanical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-9,316,329
Patent Application
US-Patent-Appl-SN-14/062,303

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