IT996087B - Perfezionamento nelle valvole limitatrici di oscillazioni transitorie di pressione in trasmissioni idrauliche e simili - Google Patents

Perfezionamento nelle valvole limitatrici di oscillazioni transitorie di pressione in trasmissioni idrauliche e simili

Info

Publication number
IT996087B
IT996087B IT51463/73A IT5146373A IT996087B IT 996087 B IT996087 B IT 996087B IT 51463/73 A IT51463/73 A IT 51463/73A IT 5146373 A IT5146373 A IT 5146373A IT 996087 B IT996087 B IT 996087B
Authority
IT
Italy
Prior art keywords
hydraulic
improvement
relief valves
pressure oscillations
transitional pressure
Prior art date
Application number
IT51463/73A
Other languages
English (en)
Original Assignee
Sperry Rand 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
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Application granted granted Critical
Publication of IT996087B publication Critical patent/IT996087B/it

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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • 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
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/565—Control of a downstream pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8606—Control during or prevention of abnormal conditions the abnormal condition being a shock
    • 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
    • Y10T137/7762—Fluid pressure type
    • 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
    • Y10T137/7781—With separate connected fluid reactor surface

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
IT51463/73A 1972-08-09 1973-07-13 Perfezionamento nelle valvole limitatrici di oscillazioni transitorie di pressione in trasmissioni idrauliche e simili IT996087B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27891972A 1972-08-09 1972-08-09

Publications (1)

Publication Number Publication Date
IT996087B true IT996087B (it) 1975-12-10

Family

ID=23066947

Family Applications (1)

Application Number Title Priority Date Filing Date
IT51463/73A IT996087B (it) 1972-08-09 1973-07-13 Perfezionamento nelle valvole limitatrici di oscillazioni transitorie di pressione in trasmissioni idrauliche e simili

Country Status (10)

Country Link
US (1) US3785398A (it)
JP (1) JPS5754673B2 (it)
AU (1) AU467489B2 (it)
CA (1) CA982018A (it)
DE (1) DE2336512C2 (it)
FR (1) FR2195763B1 (it)
GB (1) GB1434082A (it)
IN (1) IN140924B (it)
IT (1) IT996087B (it)
SE (1) SE393666B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923075A (en) * 1974-05-16 1975-12-02 Sperry Rand Corp Power transmission
JPH0259258U (it) * 1988-10-21 1990-04-27
DE4221213A1 (de) * 1992-06-27 1994-01-05 Rexroth Mannesmann Gmbh Druckbegrenzungsventil für hydraulische Anlagen
DE4225698A1 (de) * 1992-08-04 1994-02-10 Walter Dipl Ing Schneider Dämpfungsventil kleinster Bauart
US7270145B2 (en) * 2002-08-30 2007-09-18 Haldex Brake Corporation unloading/venting valve having integrated therewith a high-pressure protection valve
US7163253B2 (en) * 2003-12-30 2007-01-16 Durakon Industries, Inc. Method of manufacturing composite vehicle panels
US7066710B2 (en) 2004-05-27 2006-06-27 Honeywell International, Inc. Pneumatic valve control having improved opening characteristics and an air turbine starter incorporating the same
US7147430B2 (en) * 2004-06-10 2006-12-12 Honeywell International, Inc. Pneumatic valve control using downstream pressure feedback and an air turbine starter incorporating the same
US7757703B2 (en) * 2006-07-12 2010-07-20 Cameron International Corporation Device for regulating pressure
US9879799B2 (en) 2015-09-16 2018-01-30 Cameron International Corporation Pressure regulator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890715A (en) * 1955-08-26 1959-06-16 Warner Swasey Co Multi-pressure relief valve
US3101738A (en) * 1961-04-17 1963-08-27 Cincinnati Milling Machine Co Combined sequence and check valve
AT245891B (de) * 1963-02-09 1966-03-25 Festo Maschf Stoll G Bremsvorrichtung zur Regulierung der Vorlaufgeschwindigkeit des Kolbens von pneumatischen Arbeitszylindern
US3424061A (en) * 1965-08-26 1969-01-28 Alan C Brooks Hydraulic control cylinder and air piston assembly
US3444689A (en) * 1967-02-02 1969-05-20 Weatherhead Co Differential pressure compensator control
GB1176590A (en) * 1968-08-29 1970-01-07 Amadyne Inc Improvements in or relating to Cushion Relief Valves
US3625246A (en) * 1969-09-22 1971-12-07 Matrix Corp Nonbleed high-pressure positioner
DE2104362B2 (de) * 1971-01-30 1974-01-31 Friedrich Dipl.-Ing. 4680 Wanne-Eickel Schwing Druckbegrenzungsventil zur Einstellung der Druckanstiegsgeschwindigkeit in hydraulischen Anlagen
JPS479648U (it) * 1971-03-08 1972-10-05
JPS5428611B2 (it) * 1972-02-10 1979-09-18

Also Published As

Publication number Publication date
AU467489B2 (en) 1975-12-04
DE2336512A1 (de) 1974-02-28
FR2195763B1 (it) 1977-05-13
AU5716873A (en) 1975-01-09
US3785398A (en) 1974-01-15
CA982018A (en) 1976-01-20
DE2336512C2 (de) 1985-04-11
JPS5754673B2 (it) 1982-11-19
FR2195763A1 (it) 1974-03-08
IN140924B (it) 1977-01-01
SE393666B (sv) 1977-05-16
GB1434082A (en) 1976-04-28
JPS4952331A (it) 1974-05-21

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