JPS5575516A - Controlling method check valve - Google Patents

Controlling method check valve

Info

Publication number
JPS5575516A
JPS5575516A JP14905178A JP14905178A JPS5575516A JP S5575516 A JPS5575516 A JP S5575516A JP 14905178 A JP14905178 A JP 14905178A JP 14905178 A JP14905178 A JP 14905178A JP S5575516 A JPS5575516 A JP S5575516A
Authority
JP
Japan
Prior art keywords
check valve
steam pressure
pressure
valve
difference
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
JP14905178A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yasuo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14905178A priority Critical patent/JPS5575516A/en
Publication of JPS5575516A publication Critical patent/JPS5575516A/en
Pending legal-status Critical Current

Links

Landscapes

  • Check Valves (AREA)

Abstract

PURPOSE: To prevent chattering of a check valve, by detecting the difference between primary steam pressure and secondary steam pressure, and controlling the check valve forcibly on the basis of the pressure difference.
CONSTITUTION: When the primary steam pressure 22 of check valve 21 becomes higher than the secondary steam pressure 23 more than a predetermined level, the pressure difference is detected by detector 24 for detecting the differential pressure on the opposite sides of check valve 21 and transmitted to interlocking means 25. By the interlocking means 25, electromagnetic valve 26 for opening and closing the check valve 21 is energized and speed controller 28 also used for opening and closing the check valve 21 is turned on simultaneously so as to supply compressed air from damper valve 27 of turbine relay to air cylinder 29 of check valve 21. Check valve 21 is opened or closed gradually since compressed-air flow is limited appropriately by the speed controller 28.
COPYRIGHT: (C)1980,JPO&Japio
JP14905178A 1978-12-04 1978-12-04 Controlling method check valve Pending JPS5575516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14905178A JPS5575516A (en) 1978-12-04 1978-12-04 Controlling method check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14905178A JPS5575516A (en) 1978-12-04 1978-12-04 Controlling method check valve

Publications (1)

Publication Number Publication Date
JPS5575516A true JPS5575516A (en) 1980-06-06

Family

ID=15466571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14905178A Pending JPS5575516A (en) 1978-12-04 1978-12-04 Controlling method check valve

Country Status (1)

Country Link
JP (1) JPS5575516A (en)

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