SE8002300L - PRESSURE RELEASE VALVE DEVICE - Google Patents

PRESSURE RELEASE VALVE DEVICE

Info

Publication number
SE8002300L
SE8002300L SE8002300A SE8002300A SE8002300L SE 8002300 L SE8002300 L SE 8002300L SE 8002300 A SE8002300 A SE 8002300A SE 8002300 A SE8002300 A SE 8002300A SE 8002300 L SE8002300 L SE 8002300L
Authority
SE
Sweden
Prior art keywords
main valve
orifice
pilot valve
valve
bleed flow
Prior art date
Application number
SE8002300A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE436784B (en
Inventor
H D Taylor
Original Assignee
Sperry Corp
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
Priority claimed from US06/024,058 external-priority patent/US4201052A/en
Priority claimed from US06/117,933 external-priority patent/US4285362A/en
Application filed by Sperry Corp filed Critical Sperry Corp
Publication of SE8002300L publication Critical patent/SE8002300L/en
Publication of SE436784B publication Critical patent/SE436784B/en

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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A hydraulic pressure relief circuit includes a main valve (14), a bleed flow orifice (18) to provide stability to the main valve, a pilot valve (20) having a differential area piston (30,32) and a damping orifice (46) in conjunction with an accumulator (44). System pressure is limited by opening the main valve and allowing fluid flow from the system back to tank. The main valve is controlled as a bleed flow servo wherein the pilot valve (20) meters the bleed flow from the bleed flow orifice (18) to tank, thereby controlling the opening of the main valve. Fluid flow through the damping orifice (46) in conjunction with the accumulator (44) acts on area (A1) of the pilot valve to provide damping forces acting on the pilot valve with both rising and falling system pressures, thereby limiting the maximum rate of pressure increase in the circuit (10). <IMAGE>
SE8002300A 1979-03-26 1980-03-25 PRESSURE LIMIT VALVE DEVICE FOR A HYDRAULIC CIRCUIT SE436784B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/024,058 US4201052A (en) 1979-03-26 1979-03-26 Power transmission
US06/117,933 US4285362A (en) 1980-02-04 1980-02-04 Power transmission

Publications (2)

Publication Number Publication Date
SE8002300L true SE8002300L (en) 1980-09-27
SE436784B SE436784B (en) 1985-01-21

Family

ID=26697982

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8002300A SE436784B (en) 1979-03-26 1980-03-25 PRESSURE LIMIT VALVE DEVICE FOR A HYDRAULIC CIRCUIT

Country Status (6)

Country Link
AU (1) AU534468B2 (en)
CA (1) CA1130167A (en)
DE (1) DE3011233A1 (en)
GB (1) GB2047434B (en)
IN (1) IN154880B (en)
SE (1) SE436784B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE439342C (en) * 1981-09-28 1996-11-18 Bo Reiner Andersson Valve device for controlling a linear or rotary hydraulic motor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083727A (en) * 1961-06-30 1963-04-02 Oilgear Co Pilot operated balanced relief valve with accumulator
US3578018A (en) * 1969-04-18 1971-05-11 Abex Corp Rate of pressure rise limiting valve
DE7715366U1 (en) * 1977-05-14 1977-09-01 Robert Bosch Gmbh, 7000 Stuttgart PRESSURE REGULATING VALVE FOR HYDRAULIC SYSTEMS

Also Published As

Publication number Publication date
GB2047434A (en) 1980-11-26
SE436784B (en) 1985-01-21
AU534468B2 (en) 1984-02-02
DE3011233A1 (en) 1980-10-09
AU5682580A (en) 1980-10-02
DE3011233C2 (en) 1991-04-18
GB2047434B (en) 1983-03-09
IN154880B (en) 1984-12-22
CA1130167A (en) 1982-08-24

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