JPS56156568A - Safety valve - Google Patents

Safety valve

Info

Publication number
JPS56156568A
JPS56156568A JP5867580A JP5867580A JPS56156568A JP S56156568 A JPS56156568 A JP S56156568A JP 5867580 A JP5867580 A JP 5867580A JP 5867580 A JP5867580 A JP 5867580A JP S56156568 A JPS56156568 A JP S56156568A
Authority
JP
Japan
Prior art keywords
fin
valve
pressure
fluid
back pressure
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.)
Granted
Application number
JP5867580A
Other languages
Japanese (ja)
Other versions
JPS634065B2 (en
Inventor
Masami Okano
Kunio Saeki
Nobuyoshi Hamada
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.)
Okano Valve Mfg Co Ltd
Original Assignee
Okano Valve Mfg 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 Okano Valve Mfg Co Ltd filed Critical Okano Valve Mfg Co Ltd
Priority to JP5867580A priority Critical patent/JPS56156568A/en
Priority to CA000359097A priority patent/CA1162129A/en
Priority to NL8004936A priority patent/NL191953C/en
Priority to DE19803041124 priority patent/DE3041124C2/en
Publication of JPS56156568A publication Critical patent/JPS56156568A/en
Publication of JPS634065B2 publication Critical patent/JPS634065B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/08—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage
    • F16K17/087—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for providing a large discharge passage with bellows

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

PURPOSE: To enable the blowing-out of a valve within decided blowing-down in stable functioning by mounting a fin extending near an end of an upper ring to a disc socket.
CONSTITUTION: A steam flow in a steam passage between a valve seat surface 2a and a lower section of a valve body 3 from a valve inlet has no effect on the pressure of an exhaust pipe during the ejection of a valve. Only pressure corresponding to static pressure is introduced to a back pressure chamber 9 without converting the energy of a current passing between the lower section of the valve body 3 and the valve seat surface 2a into pressure. That is, a fin 13 is mounted to a disc socket 12, the direction of the steam flow changed by the fin 13 and an opening section communicated with the back pressure chamber 9 is set up to an end surface of the fin 13 through which a fluid blows. An upper ring 14 is located at an end of a streamline of the fluid ejected from the fin 13, and fills the role of preventing the generation of an overcurrent phenomenon at a fin end and the unstable pressure of the back pressure chamber 9 when the fluid is ejected into a valve chamber 1c.
COPYRIGHT: (C)1981,JPO&Japio
JP5867580A 1980-05-06 1980-05-06 Safety valve Granted JPS56156568A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5867580A JPS56156568A (en) 1980-05-06 1980-05-06 Safety valve
CA000359097A CA1162129A (en) 1980-05-06 1980-08-27 Safety valve
NL8004936A NL191953C (en) 1980-05-06 1980-08-29 Safety valve.
DE19803041124 DE3041124C2 (en) 1980-05-06 1980-10-31 Safety valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5867580A JPS56156568A (en) 1980-05-06 1980-05-06 Safety valve

Publications (2)

Publication Number Publication Date
JPS56156568A true JPS56156568A (en) 1981-12-03
JPS634065B2 JPS634065B2 (en) 1988-01-27

Family

ID=13091146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5867580A Granted JPS56156568A (en) 1980-05-06 1980-05-06 Safety valve

Country Status (4)

Country Link
JP (1) JPS56156568A (en)
CA (1) CA1162129A (en)
DE (1) DE3041124C2 (en)
NL (1) NL191953C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001295952A (en) * 2000-04-14 2001-10-26 Kawasaki Thermal Engineering Co Ltd Fine safety valve
CN103511693A (en) * 2013-09-29 2014-01-15 北京航天动力研究所 Valve rod sealing type closed backpressure adjusting type steam security valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702142A (en) * 1970-07-27 1972-11-07 Dresser Ind Safety valve having back pressure compensator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001295952A (en) * 2000-04-14 2001-10-26 Kawasaki Thermal Engineering Co Ltd Fine safety valve
CN103511693A (en) * 2013-09-29 2014-01-15 北京航天动力研究所 Valve rod sealing type closed backpressure adjusting type steam security valve
CN103511693B (en) * 2013-09-29 2015-08-26 北京航天动力研究所 Backpressure regulation formula steam security valve closed by a kind of valve stem seal type

Also Published As

Publication number Publication date
DE3041124A1 (en) 1981-11-19
NL191953B (en) 1996-07-01
JPS634065B2 (en) 1988-01-27
CA1162129A (en) 1984-02-14
NL191953C (en) 1996-11-04
DE3041124C2 (en) 1988-01-21
NL8004936A (en) 1981-12-01

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