GB1511658A - Fluid control apparatus - Google Patents
Fluid control apparatusInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Fluid Pressure (AREA)
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.
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)
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 |
-
1975
- 1975-12-16 GB GB5450874A patent/GB1511658A/en not_active Expired
Cited By (5)
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 |