JPS5794178A - Dually closed deaeration valve - Google Patents

Dually closed deaeration valve

Info

Publication number
JPS5794178A
JPS5794178A JP17030180A JP17030180A JPS5794178A JP S5794178 A JPS5794178 A JP S5794178A JP 17030180 A JP17030180 A JP 17030180A JP 17030180 A JP17030180 A JP 17030180A JP S5794178 A JPS5794178 A JP S5794178A
Authority
JP
Japan
Prior art keywords
valve
closed
dually
container
seat
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.)
Pending
Application number
JP17030180A
Other languages
Japanese (ja)
Inventor
Kazutoshi Hamamoto
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP17030180A priority Critical patent/JPS5794178A/en
Publication of JPS5794178A publication Critical patent/JPS5794178A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To enable leaks of operating fluid to be prevented by interposing a spring between two valve elements in a valve body so that a gas bleeding portion is dually closed.
CONSTITUTION: In order to expel noncondensable gas a cover 8 is removed first, and then the upper end of a shaft 7a is depressed after a first valve 6 is screwed into the side of a second partition wall 3. Therefore, a gap is established between a second valve 7 and a valve seat 3a, and then noncondensable gas is bled to the exterior through a deaseration nozzle 22' of a container 22, a second compartment 5 and a first compartment 4, due to an extracting action or internal pressure in itself. After the bleeding of noncondensable gas has been completed, the depression of the shaft 7a is stopped. Accordingly, the valve 7 is seated on the valve seat 3a by the restoring force of a spring 10 so that the container 22 is closed. Then, the first valve 3 is unscrewed to seat on a valve seat 2a so that the container is dually closed, thereby no leak of a working medium is occured.
COPYRIGHT: (C)1982,JPO&Japio
JP17030180A 1980-12-04 1980-12-04 Dually closed deaeration valve Pending JPS5794178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17030180A JPS5794178A (en) 1980-12-04 1980-12-04 Dually closed deaeration valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17030180A JPS5794178A (en) 1980-12-04 1980-12-04 Dually closed deaeration valve

Publications (1)

Publication Number Publication Date
JPS5794178A true JPS5794178A (en) 1982-06-11

Family

ID=15902422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17030180A Pending JPS5794178A (en) 1980-12-04 1980-12-04 Dually closed deaeration valve

Country Status (1)

Country Link
JP (1) JPS5794178A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100365332C (en) * 2005-03-04 2008-01-30 中芯国际集成电路制造(上海)有限公司 A device for preventing gas leakage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100365332C (en) * 2005-03-04 2008-01-30 中芯国际集成电路制造(上海)有限公司 A device for preventing gas leakage

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