JPS6466403A - Valve position detecting method and valve position detecting device - Google Patents
Valve position detecting method and valve position detecting deviceInfo
- Publication number
- JPS6466403A JPS6466403A JP22186487A JP22186487A JPS6466403A JP S6466403 A JPS6466403 A JP S6466403A JP 22186487 A JP22186487 A JP 22186487A JP 22186487 A JP22186487 A JP 22186487A JP S6466403 A JPS6466403 A JP S6466403A
- Authority
- JP
- Japan
- Prior art keywords
- detectors
- detecting
- position detecting
- valve position
- hydraulic cylinder
- 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
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
PURPOSE:To prevent detectors from breaking due to oscillation so as to enhance detecting accuracy by detecting the moving quantities of a hydraulic cylinder and a piston rod with respect to a reference plane in non-contact state and calculating valve opening from both detected values. CONSTITUTION:Detecting collars 13, 14 are provided on a switch rod 2 connected to a piston rod in a hydraulic cylinder 3, and electrical non-contact type valve opening detectors 5a, 5b are provided in positions opposed to the collars 13, 14. In addition, a moving quantity detecting collar 15 is provided on the hydraulic cylinder 3, and a moving quantity detector 16 is fixed to a support 17 in opposition to this. Opening of a valve disc 6 is calculated by means of such a process that detected signals from the valve opening detectors are corrected by a single from the moving quantity detector. With this arrangement, the detectors can be prevented from breaking due to the oscillation of a valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22186487A JP2602844B2 (en) | 1987-09-07 | 1987-09-07 | Valve position detection method and valve position detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22186487A JP2602844B2 (en) | 1987-09-07 | 1987-09-07 | Valve position detection method and valve position detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6466403A true JPS6466403A (en) | 1989-03-13 |
JP2602844B2 JP2602844B2 (en) | 1997-04-23 |
Family
ID=16773382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22186487A Expired - Lifetime JP2602844B2 (en) | 1987-09-07 | 1987-09-07 | Valve position detection method and valve position detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2602844B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013503309A (en) * | 2009-08-28 | 2013-01-31 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Valve calibration |
-
1987
- 1987-09-07 JP JP22186487A patent/JP2602844B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013503309A (en) * | 2009-08-28 | 2013-01-31 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Valve calibration |
US9188239B2 (en) | 2009-08-28 | 2015-11-17 | Fisher Controls International, Llc | Apparatus, methods and articles of manufacture to calibrate valve-mounted instruments |
US10120392B2 (en) | 2009-08-28 | 2018-11-06 | Fisher Controls International, Llc | Apparatus, methods and articles of manufacture to calibrate valve-mounted instruments |
Also Published As
Publication number | Publication date |
---|---|
JP2602844B2 (en) | 1997-04-23 |
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