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GB875536A - Improvements in or relating to fluid-pressure regulating power cylinder devices - Google Patents

Improvements in or relating to fluid-pressure regulating power cylinder devices

Info

Publication number
GB875536A
GB875536A GB38103/57A GB3810357A GB875536A GB 875536 A GB875536 A GB 875536A GB 38103/57 A GB38103/57 A GB 38103/57A GB 3810357 A GB3810357 A GB 3810357A GB 875536 A GB875536 A GB 875536A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
fluid
spring
outlet
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.)
Expired
Application number
GB38103/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB875536A publication Critical patent/GB875536A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/101—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the controller being arranged as a multiple-way 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
    • F15B2211/505—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
    • F15B2211/52—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
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/555—Pressure control for assuring a minimum pressure, e.g. by using a back pressure valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

875,536. Fluid-pressure servomotor-control systems; valves. REIS, S. Dec. 6, 1957 [Dec. 6, 1956], No. 38103/57. Class 135. Fluid supplied to the inlet 2 reaches an outlet 4 via chambers 11, 12, a duct 13 in a piston 6 and a non-return valve 14; when the outlet 4 is closed by means of a cock, not shown, in the line connected thereto or the pressure rises in the latter, the pressure increase in chamber 12 causes downward motion of piston 6 and an associated piston 8 against a spring 16 until the latter piston abuts a plug 20, in which position a port 24 is closed by piston 6. The pressure continues to increase in chamber 12 until it is sufficient to move the piston 6 relative to piston 8 in opposition to a spring 10, whereupon a port 25 is opened to enable pressure fluid to act on an adjustably spring-loaded piston 19 and withdraw plug 20 so that spring 10, which is stronger than spring 16, forces the piston 8 down until it uncovers a port 3 through which pressure in chamber 11 is relieved ; the pressure in chamber 12 is maintained because valve 14 closes the duct 13. When the outlet 4 is opened or the pressure therein falls below a given value the pistons 6, 8 return to the positions shown closing ports 3, 25 and opening port 24, so exhausting the fluid which previously acted on piston 19. The outlet 4 may be connected to an accumulator and the rod 7 of piston 6 on which piston 8 is slidable may be extended through the lower end of the casing 1 to actuate a power user, not shown.
GB38103/57A 1956-12-06 1957-12-06 Improvements in or relating to fluid-pressure regulating power cylinder devices Expired GB875536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT875536X 1956-12-06

Publications (1)

Publication Number Publication Date
GB875536A true GB875536A (en) 1961-08-23

Family

ID=11330874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38103/57A Expired GB875536A (en) 1956-12-06 1957-12-06 Improvements in or relating to fluid-pressure regulating power cylinder devices

Country Status (1)

Country Link
GB (1) GB875536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837463B4 (en) * 1998-08-19 2007-07-26 müller co-ax ag Coaxial valve with bypass valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837463B4 (en) * 1998-08-19 2007-07-26 müller co-ax ag Coaxial valve with bypass valve

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