FR2383476A1 - CURRENT-POSITION ELECTROPNEUMATIC TRANSDUCER - Google Patents

CURRENT-POSITION ELECTROPNEUMATIC TRANSDUCER

Info

Publication number
FR2383476A1
FR2383476A1 FR7807175A FR7807175A FR2383476A1 FR 2383476 A1 FR2383476 A1 FR 2383476A1 FR 7807175 A FR7807175 A FR 7807175A FR 7807175 A FR7807175 A FR 7807175A FR 2383476 A1 FR2383476 A1 FR 2383476A1
Authority
FR
France
Prior art keywords
nozzle
magnet
coil
backpressure
bellows
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
FR7807175A
Other languages
French (fr)
Other versions
FR2383476B1 (en
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of FR2383476A1 publication Critical patent/FR2383476A1/en
Application granted granted Critical
Publication of FR2383476B1 publication Critical patent/FR2383476B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities
    • F15B5/003—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities characterised by variation of the pressure in a nozzle or the like, e.g. nozzle-flapper system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C4/00—Circuit elements characterised by their special functions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Control Of Position Or Direction (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

Ce transducteur comprend un moteur électrique du type moteur couple comportant un aimant permanent fixe à aimantation diamétrale et une bobine mobile 42 formant un cadre rectangulaire dont les côtés axiaux sont placés face aux pôles de l'aimant et qui est suspendue par des éléments de flexion pour tourner autour de l'axe de l'aimant. Une palette solidaire de la bobine couvre une buse incorporée dans un circuit pneumatique. La contre-pression du circuit est proportionnelle à l'intensité qui parcourt la bobine et cette contre-pression est amplifiée par un soufflet qui agit sur un levier supportant la buse et qui établit un écartement à peu près constant entre la palette et la buse. La pression du soufflet forme le signal de pression pneumatique de sortie.This transducer comprises an electric motor of the torque motor type comprising a fixed permanent magnet with diametrical magnetization and a voice coil 42 forming a rectangular frame whose axial sides are placed facing the poles of the magnet and which is suspended by bending elements for rotate around the axis of the magnet. A pallet integral with the coil covers a nozzle incorporated in a pneumatic circuit. The backpressure of the circuit is proportional to the intensity flowing through the coil and this backpressure is amplified by a bellows which acts on a lever supporting the nozzle and which establishes an approximately constant spacing between the pallet and the nozzle. The bellows pressure forms the output air pressure signal.

FR7807175A 1977-03-11 1978-03-13 CURRENT-POSITION ELECTROPNEUMATIC TRANSDUCER Granted FR2383476A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77657577A 1977-03-11 1977-03-11

Publications (2)

Publication Number Publication Date
FR2383476A1 true FR2383476A1 (en) 1978-10-06
FR2383476B1 FR2383476B1 (en) 1984-12-14

Family

ID=25107794

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807175A Granted FR2383476A1 (en) 1977-03-11 1978-03-13 CURRENT-POSITION ELECTROPNEUMATIC TRANSDUCER

Country Status (6)

Country Link
JP (1) JPS5826042B2 (en)
DE (1) DE2810257C2 (en)
FR (1) FR2383476A1 (en)
GB (1) GB1572584A (en)
IT (1) IT1101824B (en)
NL (1) NL182337C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205576C2 (en) * 1982-02-17 1986-11-06 Vdo Adolf Schindling Ag, 6000 Frankfurt Device for converting electrical signals into pneumatic signals
GB2123185B (en) * 1982-07-02 1985-07-24 Dowty Hydraulic Units Ltd Electro-hydraulic servo valves
DE3500731A1 (en) * 1985-01-11 1986-07-17 Honeywell Gmbh, 6050 Offenbach Electro-pneumatic signal converter or pneumatic actuator
DE102011106328A1 (en) * 2011-07-01 2013-01-03 Abb Ag Position controller for pneumatic actuator, changes distance between baffle plate to nozzle corresponding to rotational movement of moving coil
CN109443744A (en) * 2017-08-30 2019-03-08 广东核电合营有限公司 A kind of valve body characteristic check device and system applied to nuclear power plant

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310298A (en) * 1938-07-28 1943-02-09 Standard Oil Dev Co Liquid level control device
US2789543A (en) * 1953-07-02 1957-04-23 Honeywell Regulator Co Stabilized pneumatic regulator apparatus
FR82398E (en) * 1962-10-04 1964-01-31 Controle Et Regulation Device for converting electrical signals into pneumatic signals
FR1378109A (en) * 1962-09-10 1964-11-13 Robertshaw Controls Co Electric-pneumatic transducer
FR1520368A (en) * 1963-10-03 1968-04-12 Saxby Soc Improvement in electro-pneumatic positioners for control valves
FR1526775A (en) * 1963-03-29 1968-05-31 Samson Appbau Ag Pneumatic position regulator
DE1280563B (en) * 1965-12-18 1968-10-17 Schoppe & Faeser Gmbh Electropneumatic converter
FR2212923A5 (en) * 1972-12-30 1974-07-26 Samson Apparatebau Ag

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB705702A (en) * 1950-07-21 1954-03-17 Regulateurs Francel Body Corpo Improvements in or relating to gaseous fluid relays
FR1258366A (en) * 1960-03-02 1961-04-14 Rech Etudes Production Sarl primary stage with vane and torsion tube for two-stage hydraulic distributor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310298A (en) * 1938-07-28 1943-02-09 Standard Oil Dev Co Liquid level control device
US2789543A (en) * 1953-07-02 1957-04-23 Honeywell Regulator Co Stabilized pneumatic regulator apparatus
FR1378109A (en) * 1962-09-10 1964-11-13 Robertshaw Controls Co Electric-pneumatic transducer
FR82398E (en) * 1962-10-04 1964-01-31 Controle Et Regulation Device for converting electrical signals into pneumatic signals
FR1526775A (en) * 1963-03-29 1968-05-31 Samson Appbau Ag Pneumatic position regulator
FR1520368A (en) * 1963-10-03 1968-04-12 Saxby Soc Improvement in electro-pneumatic positioners for control valves
DE1280563B (en) * 1965-12-18 1968-10-17 Schoppe & Faeser Gmbh Electropneumatic converter
FR2212923A5 (en) * 1972-12-30 1974-07-26 Samson Apparatebau Ag

Also Published As

Publication number Publication date
DE2810257C2 (en) 1986-10-16
FR2383476B1 (en) 1984-12-14
DE2810257A1 (en) 1978-09-21
JPS53113976A (en) 1978-10-04
IT1101824B (en) 1985-10-07
JPS5826042B2 (en) 1983-05-31
GB1572584A (en) 1980-07-30
NL182337C (en) 1988-02-16
IT7848379A0 (en) 1978-03-10
NL182337B (en) 1987-09-16
NL7802604A (en) 1978-09-13

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Legal Events

Date Code Title Description
ST Notification of lapse