Equalizer valve with opposed seals biased toward closed from rising pressure on either of opposed sides

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专利权人:

Baker Hughes, a GE company, LLC

发明人:

Kucera Samuel C.

申请号：

US201514922851

公开号：

US9896907(B2)

申请日:

2015.10.26

申请国别(地区):

美国

年份:

2018

代理人:

Rosenblatt Steve

摘要：

An equalizer valve is configured to stay shut when pressure on one side or the other goes up. A dynamic seal and a metal to metal seal are located within the housing. Pressure from above is directed uphole of the metal to metal seal and downhole of the larger dynamic seal for a net closing force. Pressure from downhole is directed between the metal to metal and dynamic seals for a net force uphole to keep the metal seal closed. Normal operation is from a control line moving a rod piston to move a valve member to open the metal to metal seal for flow through the valve body.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/