CA2166867A1 - Valve positioner with pressure feedback, dynamic correction and diagnostics - Google Patents

Valve positioner with pressure feedback, dynamic correction and diagnostics

Info

Publication number
CA2166867A1
CA2166867A1 CA002166867A CA2166867A CA2166867A1 CA 2166867 A1 CA2166867 A1 CA 2166867A1 CA 002166867 A CA002166867 A CA 002166867A CA 2166867 A CA2166867 A CA 2166867A CA 2166867 A1 CA2166867 A1 CA 2166867A1
Authority
CA
Canada
Prior art keywords
diagnostics
valve
pressure feedback
valve positioner
dynamic correction
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
CA002166867A
Other languages
French (fr)
Other versions
CA2166867C (en
Inventor
Gary A. Lenz
Gregory C. Brown
Jogesh Warrior
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.)
Fisher Controls International LLC
Original Assignee
Gary A. Lenz
Gregory C. Brown
Jogesh Warrior
Rosemount Inc.
Fisher Controls International, Inc.
Fisher Controls International, Llc
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 Gary A. Lenz, Gregory C. Brown, Jogesh Warrior, Rosemount Inc., Fisher Controls International, Inc., Fisher Controls International, Llc filed Critical Gary A. Lenz
Publication of CA2166867A1 publication Critical patent/CA2166867A1/en
Application granted granted Critical
Publication of CA2166867C publication Critical patent/CA2166867C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/005—Control of flow characterised by the use of auxiliary non-electric power combined with the use of electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2409—With counter-balancing pressure feedback to the modulating device
    • Y10T137/2452—With counter-counter balancing pressure feedback
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7759—Responsive to change in rate of fluid flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve

Abstract

In this invention, a valve positioner (50) receives a setpoint from a master (62) and provides a control pressure to a valve actuator (70) for controlling a valve (72). A sensing circuit (102) in the positioner (50) senses the position of the valve (72) and the control pressure, and a control circuit (94) in the positioner (50) uses both the sensed pressure and position to provide a command output to a pneumatic section (100) which produces the control pressure.
CA002166867A 1993-08-25 1994-07-14 Valve positioner with pressure feedback, dynamic correction and diagnostics Expired - Fee Related CA2166867C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/112,694 1993-08-25
US08/112,694 US5549137A (en) 1993-08-25 1993-08-25 Valve positioner with pressure feedback, dynamic correction and diagnostics
PCT/US1994/007914 WO1995006276A1 (en) 1993-08-25 1994-07-14 Valve positioner with pressure feedback, dynamic correction and diagnostics

Publications (2)

Publication Number Publication Date
CA2166867A1 true CA2166867A1 (en) 1995-03-02
CA2166867C CA2166867C (en) 2004-06-01

Family

ID=22345360

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002166867A Expired - Fee Related CA2166867C (en) 1993-08-25 1994-07-14 Valve positioner with pressure feedback, dynamic correction and diagnostics

Country Status (9)

Country Link
US (3) US5549137A (en)
EP (2) EP0957418B1 (en)
JP (1) JP3595554B2 (en)
CN (1) CN1072816C (en)
BR (1) BR9407585A (en)
CA (1) CA2166867C (en)
DE (2) DE69432029T2 (en)
SG (1) SG44472A1 (en)
WO (1) WO1995006276A1 (en)

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US5573032A (en) 1996-11-12
BR9407585A (en) 1997-01-07

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