ZA837943B - Control system for fluid pressure circuits - Google Patents

Control system for fluid pressure circuits

Info

Publication number
ZA837943B
ZA837943B ZA837943A ZA837943A ZA837943B ZA 837943 B ZA837943 B ZA 837943B ZA 837943 A ZA837943 A ZA 837943A ZA 837943 A ZA837943 A ZA 837943A ZA 837943 B ZA837943 B ZA 837943B
Authority
ZA
South Africa
Prior art keywords
control system
fluid pressure
pressure circuits
circuits
fluid
Prior art date
Application number
ZA837943A
Other languages
English (en)
Inventor
Ronnie Abraham Arav
Original Assignee
Beloit Walmsley 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 Beloit Walmsley Ltd filed Critical Beloit Walmsley Ltd
Publication of ZA837943B publication Critical patent/ZA837943B/xx

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/06—Means for regulating the pressure
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/0404—Control of fluid pressure without auxiliary power with two or more controllers mounted in parallel
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
    • G05D16/2097—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using pistons within the main valve
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2703—Flow rate responsive
    • Y10T137/2705—Pressure differential

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Paper (AREA)
ZA837943A 1982-10-30 1983-10-25 Control system for fluid pressure circuits ZA837943B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8230928 1982-10-30

Publications (1)

Publication Number Publication Date
ZA837943B true ZA837943B (en) 1984-06-27

Family

ID=10533912

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA837943A ZA837943B (en) 1982-10-30 1983-10-25 Control system for fluid pressure circuits

Country Status (7)

Country Link
US (1) US4530371A (xx)
EP (1) EP0109220B1 (xx)
JP (1) JPS59131005A (xx)
CA (1) CA1201039A (xx)
DE (1) DE3370207D1 (xx)
FI (1) FI75913C (xx)
ZA (1) ZA837943B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633699A (en) * 1985-03-22 1987-01-06 Fuchs Jr Francis J Continuous extrusion apparatus
DE3521579A1 (de) * 1985-06-15 1986-12-18 J.M. Voith Gmbh, 7920 Heidenheim Steuerventil
JPS63195568A (ja) * 1987-02-09 1988-08-12 Hitachi Ltd 圧力平衡器
JP3607339B2 (ja) * 1995-02-13 2005-01-05 甲南電機株式会社 過負荷防止装置
US5650048A (en) * 1996-01-31 1997-07-22 Beloit Technologies, Inc. Extended nip press with hydraulic pressure equalizer valve
DE10361269B4 (de) * 2003-12-24 2008-09-18 Md Papier Gmbh & Co. Kg Breitnippresse zum Behandeln einer Materialbahn
US7644646B1 (en) 2007-06-13 2010-01-12 Sauer-Danfoss, Inc. Three position servo system to control the displacement of a hydraulic motor
US7730826B2 (en) * 2007-07-31 2010-06-08 Sauer-Danfoss Inc. Swashplate type axial piston device having apparatus for providing three operating displacements
DE102013021057B4 (de) * 2013-12-18 2017-06-08 Grammer Ag Druckminderer
JP6972608B2 (ja) * 2017-03-27 2021-11-24 日本電産トーソク株式会社 スプールバルブ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313991A (en) * 1941-02-12 1943-03-16 Bendix Westinghouse Automotive Brake mechanism
US2489823A (en) * 1946-03-27 1949-11-29 Sanmyer Corp Liquid fuel burner nozzle
FR1027361A (fr) * 1950-03-30 1953-05-11 Cie Reunies Glaces Et Verres Dispositif pour le réglage du rapport des pressions de deux fludies en vue de leur utilisation commune
US3216441A (en) * 1961-04-04 1965-11-09 Honeywell Inc Pressure regulator control system
US3172421A (en) * 1962-12-17 1965-03-09 Burronghs Corp Pressure regulator
US3154925A (en) * 1963-01-09 1964-11-03 United Shoe Machinery Corp Power plants
US3211176A (en) * 1963-09-11 1965-10-12 Vare Ind Inc Pressure control system
FR2112845A5 (xx) * 1970-11-06 1972-06-23 Morel Albert
FR2219358B1 (xx) * 1973-02-22 1975-04-04 Brieu Francois

Also Published As

Publication number Publication date
FI75913B (fi) 1988-04-29
EP0109220B1 (en) 1987-03-11
JPS59131005A (ja) 1984-07-27
EP0109220A1 (en) 1984-05-23
DE3370207D1 (en) 1987-04-16
US4530371A (en) 1985-07-23
FI75913C (fi) 1988-08-08
CA1201039A (en) 1986-02-25
FI833947A0 (fi) 1983-10-28
FI833947A (fi) 1984-05-01

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