JPS5655760A - Water seal device for fluid valve - Google Patents

Water seal device for fluid valve

Info

Publication number
JPS5655760A
JPS5655760A JP13193579A JP13193579A JPS5655760A JP S5655760 A JPS5655760 A JP S5655760A JP 13193579 A JP13193579 A JP 13193579A JP 13193579 A JP13193579 A JP 13193579A JP S5655760 A JPS5655760 A JP S5655760A
Authority
JP
Japan
Prior art keywords
water seal
valve seat
fluid
pressure
empty chamber
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
JP13193579A
Other languages
Japanese (ja)
Inventor
Juichiro Kawai
Yasusuke Watanabe
Isao Ishigamori
Takashi Ito
Tetsuya Teramoto
Minoru Ohara
Koichi Arakawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13193579A priority Critical patent/JPS5655760A/en
Publication of JPS5655760A publication Critical patent/JPS5655760A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lift Valve (AREA)

Abstract

PURPOSE: To easily control coupling at a water seal portion by providing a moving clearance as an enclosed empty chamber formed at the side which is in contact with a coupling adjustment mechanism for water seal valve seat and by installing a pressurized fluid intake circuit in the empty chamber.
CONSTITUTION: A stop valve 25 is installed at a liquid pressure intake pipe 24. When the stop valve 25 is opened, the fluid at pressure P on the upper stream side is introduced into an enclosed empty chamber 23 through the intake pipe 24. and presses a water seal valve seat 19 at the pressure P all over the section of height L2 in the direction opposite to a fluid passage direction S. The pressure P acts on the section of height L1 from the upper stream side of the fluid along the fluid passage direction S. The water seal valve seat 19 is pressed down into the coupling direction to a valve body 17 at the force of P×(L2 -L1). The action force of said fluid increases the tightness between the water seal valve seat 19 and the valve body 17. The water seal valve seat 19 follows any localized deformations of the valve body 17 and provides a uniform water seal effect over the entire water seal portion.
COPYRIGHT: (C)1981,JPO&Japio
JP13193579A 1979-10-15 1979-10-15 Water seal device for fluid valve Pending JPS5655760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13193579A JPS5655760A (en) 1979-10-15 1979-10-15 Water seal device for fluid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13193579A JPS5655760A (en) 1979-10-15 1979-10-15 Water seal device for fluid valve

Publications (1)

Publication Number Publication Date
JPS5655760A true JPS5655760A (en) 1981-05-16

Family

ID=15069644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13193579A Pending JPS5655760A (en) 1979-10-15 1979-10-15 Water seal device for fluid valve

Country Status (1)

Country Link
JP (1) JPS5655760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759024A (en) * 2014-01-08 2014-04-30 铁岭特种阀门股份有限公司 Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759024A (en) * 2014-01-08 2014-04-30 铁岭特种阀门股份有限公司 Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function
CN103759024B (en) * 2014-01-08 2016-04-20 铁岭特种阀门股份有限公司 There is the bidirectional sealed butterfly valve of the floating type valve seat of fluid power and anti-silt function

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