JPS55142173A - Water sealing apparatus of spherical valve - Google Patents

Water sealing apparatus of spherical valve

Info

Publication number
JPS55142173A
JPS55142173A JP5036379A JP5036379A JPS55142173A JP S55142173 A JPS55142173 A JP S55142173A JP 5036379 A JP5036379 A JP 5036379A JP 5036379 A JP5036379 A JP 5036379A JP S55142173 A JPS55142173 A JP S55142173A
Authority
JP
Japan
Prior art keywords
sealing ring
oil pressure
side sealing
downstream side
released
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
JP5036379A
Other languages
Japanese (ja)
Other versions
JPS5814953B2 (en
Inventor
Tetsuya Teramoto
Yasusuke Watanabe
Takashi Ito
Juichiro Kawai
Isao Ishigamori
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 JP5036379A priority Critical patent/JPS5814953B2/en
Publication of JPS55142173A publication Critical patent/JPS55142173A/en
Publication of JPS5814953B2 publication Critical patent/JPS5814953B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To prevent biting of foreign material into seat surface by first allowing the downstream side sealing ring to be operated when the upstream side and the downstream side sealing rings are closed.
CONSTITUTION: When the water sealing mechanism is opening-closing controlled by the downstream side sealing ring control valve 34, the ON-OFF valves 44, 50, 54, and 60 are set at the open position, and the ON-OFF valves 66, 70, 74, and 78 are set at the closure position. The downstream side sealing ring 32 is closed earlier by the oil pressure which is supplied, passing through a first oil pressure feeding path 42, and the upper-stream side sealing ring 30 is closed slowly, for oil pressure is transmitted through a second oil pressure feeding path 46 having a flow rate controlling valve 48. As the oil pressure of the sealing ring 30 is released through a second returning oil path 58, and the oil pressure of the sealing ring 32 is released through a first returning oil path 52 having a flow-rate controlling valve 56, the sealing ring 32 is released lately. When ON-OFF control is performed by the upper- stream side sealing ring control valve 36, the opening-closing-position of the ON- OFF valve is reversed to the above described.
COPYRIGHT: (C)1980,JPO&Japio
JP5036379A 1979-04-25 1979-04-25 Water sealing method for spherical valve Expired JPS5814953B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5036379A JPS5814953B2 (en) 1979-04-25 1979-04-25 Water sealing method for spherical valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5036379A JPS5814953B2 (en) 1979-04-25 1979-04-25 Water sealing method for spherical valve

Publications (2)

Publication Number Publication Date
JPS55142173A true JPS55142173A (en) 1980-11-06
JPS5814953B2 JPS5814953B2 (en) 1983-03-23

Family

ID=12856800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5036379A Expired JPS5814953B2 (en) 1979-04-25 1979-04-25 Water sealing method for spherical valve

Country Status (1)

Country Link
JP (1) JPS5814953B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102818045A (en) * 2012-09-10 2012-12-12 天津百利展发集团有限公司 Intelligent locking valve
JP2015017395A (en) * 2013-07-10 2015-01-29 前澤工業株式会社 Cut-off device of water intake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102818045A (en) * 2012-09-10 2012-12-12 天津百利展发集团有限公司 Intelligent locking valve
JP2015017395A (en) * 2013-07-10 2015-01-29 前澤工業株式会社 Cut-off device of water intake

Also Published As

Publication number Publication date
JPS5814953B2 (en) 1983-03-23

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