GB1511658A - Fluid control apparatus - Google Patents

Fluid control apparatus

Info

Publication number
GB1511658A
GB1511658A GB5450874A GB5450874A GB1511658A GB 1511658 A GB1511658 A GB 1511658A GB 5450874 A GB5450874 A GB 5450874A GB 5450874 A GB5450874 A GB 5450874A GB 1511658 A GB1511658 A GB 1511658A
Authority
GB
United Kingdom
Prior art keywords
pressure
fluid
flow
valves
primary
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
GB5450874A
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.)
Secretary of State for Defence Canada
UK Secretary of State for Defence
Original Assignee
Secretary of State for Defence Canada
UK Secretary of State for Defence
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 Secretary of State for Defence Canada, UK Secretary of State for Defence filed Critical Secretary of State for Defence Canada
Priority to GB5450874A priority Critical patent/GB1511658A/en
Publication of GB1511658A publication Critical patent/GB1511658A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/16—Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid
    • 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
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/02—Details, e.g. special constructional devices for circuits with fluid elements, such as resistances, capacitive circuit elements; devices preventing reaction coupling in composite elements ; Switch boards; Programme devices
    • F15C1/04—Means for controlling fluid streams to fluid devices, e.g. by electric signals or other signals, no mixing taking place between the signal and the flow to be controlled
    • 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
    • F15C7/00—Hybrid elements, i.e. circuit elements having features according to groups F15C1/00 and F15C3/00
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
    • F16K31/423—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor the actuated members consisting of multiple way valves

Abstract

1511658 Fluid regulation DEFENCE SECRETARY OF STATE FOR 16 Dec 1975 [17 Dec 1974] 54508/74 Heading G3H [Also in Division F2] A system for actuating a pressure-operated fluidcontrol device C, Fig. 1, comprises at least one fluid circuit incorporating at least two electroviscous valves EV 1 , EV 2 , electrical control apparatus for varying the electrical field applied to the fluid flowing through the valves to vary the fluid-pressure in the circuit, and means for communicating the fluid-pressure with the fluidcontrol device C for actuating the latter and thereby controlling the flow of primary fluid WF. The control device C incorporates a bellows-type regulator B which is subjected to the pressure at point X 1 via line CP and thereby regulates the flow of the primary fluid WF from inlet IP to outlet OP leading to a load E. In an alternative embodiment, Fig. 4, four electroviscous valves EV 7 to EV 10 are arranged in the form of a Wheatstone Bridge and the two pressures at points Y 1 , Y 2 are subjected to respective bellows-type regulators B(Y 1 ), B(Y 2 ) to proportionately vary communication of high and low-pressure topping 20, 21 with a control duct 23 and thereby control the pressure at annular recess 24. Low-pressure at the recess causes much of the primary flow 19 to be directed through swirl vanes 18 in a vortex chamber 10. Highpressure at the recess causes much of the primary flow to be directed straight through and around body 16 to increase the flow-rate. In another embodiment, Fig. 3 (not shown), pressures at opposite points (X 1 , X 2 ) of a Wheatstone Bridge arrangement, are applied to the opposite ends of a spool valve (S) via bellows chambers (CH 1 , CH 2 ), the spool valve controlling primary fluid-flow to and from a piece of hydraulic equipment (HE). The electroviscous valves each comprise a hollow cylinder (1), Fig. 2 (not shown), which surrounds and supports a concentric solid cylinder (2) to form an annular flow path (3). A variable voltage (VVS) is connected across the cylinders to produce the electrical control field.
GB5450874A 1975-12-16 1975-12-16 Fluid control apparatus Expired GB1511658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5450874A GB1511658A (en) 1975-12-16 1975-12-16 Fluid control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5450874A GB1511658A (en) 1975-12-16 1975-12-16 Fluid control apparatus

Publications (1)

Publication Number Publication Date
GB1511658A true GB1511658A (en) 1978-05-24

Family

ID=10471248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5450874A Expired GB1511658A (en) 1975-12-16 1975-12-16 Fluid control apparatus

Country Status (1)

Country Link
GB (1) GB1511658A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019364A1 (en) * 1979-05-15 1980-11-26 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and A hydraulic servo valve arrangement
WO1987006657A1 (en) * 1986-04-29 1987-11-05 Robert Bosch Gmbh Electro-hydraulic converter
WO1991008003A1 (en) * 1989-11-30 1991-06-13 National Research Council Of Canada Electrohydraulic drive for pumps e.g. artificial hearts
WO1993005327A1 (en) * 1991-09-01 1993-03-18 Hansa Metallwerke Ag Electrically actuated valve for a pressurised fluid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019364A1 (en) * 1979-05-15 1980-11-26 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and A hydraulic servo valve arrangement
WO1987006657A1 (en) * 1986-04-29 1987-11-05 Robert Bosch Gmbh Electro-hydraulic converter
WO1991008003A1 (en) * 1989-11-30 1991-06-13 National Research Council Of Canada Electrohydraulic drive for pumps e.g. artificial hearts
US5269811A (en) * 1989-11-30 1993-12-14 National Research Council Of Canada Primary fluid actuated, secondary fluid propelling system
WO1993005327A1 (en) * 1991-09-01 1993-03-18 Hansa Metallwerke Ag Electrically actuated valve for a pressurised fluid

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921216