JPS5694084A - Closing speed controller for valve - Google Patents
Closing speed controller for valveInfo
- 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
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
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)
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 |
-
1979
- 1979-12-28 JP JP17038979A patent/JPS595191B2/en not_active Expired
Cited By (2)
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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