JPS5694084A - Closing speed controller for valve - Google Patents

Closing speed controller for valve

Info

Publication number
JPS5694084A
JPS5694084A JP17038979A JP17038979A JPS5694084A JP S5694084 A JPS5694084 A JP S5694084A JP 17038979 A JP17038979 A JP 17038979A JP 17038979 A JP17038979 A JP 17038979A JP S5694084 A JPS5694084 A JP S5694084A
Authority
JP
Japan
Prior art keywords
valve
hydraulic cylinder
drives
closed position
full closed
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
JP17038979A
Other languages
Japanese (ja)
Other versions
JPS595191B2 (en
Inventor
Rokuro Misawa
Hideo Hayashi
Akira Hagio
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP17038979A priority Critical patent/JPS595191B2/en
Publication of JPS5694084A publication Critical patent/JPS5694084A/en
Publication of JPS595191B2 publication Critical patent/JPS595191B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)
  • Actuator (AREA)

Abstract

PURPOSE: To sufficiently control the valve closing speed and to prevent water hammer phenomena in such a way that air cylinders and a hydraulic cylinder are provided as drives for an emergency shut off valve, and the hydraulic cylinder takes charge of the final phase of drive from nearly the end of opening or closing of the valve to the complete end.
CONSTITUTION: Air cylinders 1, 2 and a hydraulic cylinder 15 are connected to a piston rod 3 which is connected to an emergency cutoff valve, the air cylinder 2 is connected to a throttle 13, the hydraulic cylinder 15 is connected to a throttle 16, the air cylinder 2 drives the valve at a high speed from the full open position to the position near to the full closed position, and the hydraulic cylinder 15 drives the valve at a slow speed from the position near to the full closed position to the full closed position. Thus, it becomes possible to close the valve always at a constant speed, and to reduce water hammer pressure produced in the pipe without influence of fluid pressure in the pipe.
COPYRIGHT: (C)1981,JPO&Japio
JP17038979A 1979-12-28 1979-12-28 Valve closing speed control device Expired JPS595191B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17038979A JPS595191B2 (en) 1979-12-28 1979-12-28 Valve closing speed control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17038979A JPS595191B2 (en) 1979-12-28 1979-12-28 Valve closing speed control device

Publications (2)

Publication Number Publication Date
JPS5694084A true JPS5694084A (en) 1981-07-30
JPS595191B2 JPS595191B2 (en) 1984-02-03

Family

ID=15904016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17038979A Expired JPS595191B2 (en) 1979-12-28 1979-12-28 Valve closing speed control device

Country Status (1)

Country Link
JP (1) JPS595191B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04362381A (en) * 1991-06-10 1992-12-15 Kubota Corp Valve driving cylinder device
CN106439176A (en) * 2016-09-12 2017-02-22 河海大学 Long-distance water supply pipe accident quick valve closing device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04362381A (en) * 1991-06-10 1992-12-15 Kubota Corp Valve driving cylinder device
CN106439176A (en) * 2016-09-12 2017-02-22 河海大学 Long-distance water supply pipe accident quick valve closing device and method

Also Published As

Publication number Publication date
JPS595191B2 (en) 1984-02-03

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