[go: up one dir, main page]

FR2436316A1 - Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed - Google Patents

Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed

Info

Publication number
FR2436316A1
FR2436316A1 FR7826703A FR7826703A FR2436316A1 FR 2436316 A1 FR2436316 A1 FR 2436316A1 FR 7826703 A FR7826703 A FR 7826703A FR 7826703 A FR7826703 A FR 7826703A FR 2436316 A1 FR2436316 A1 FR 2436316A1
Authority
FR
France
Prior art keywords
valve
hydraulic
solenoid valve
control valve
circuit
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.)
Granted
Application number
FR7826703A
Other languages
French (fr)
Other versions
FR2436316B1 (en
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.)
ConocoPhillips Co
Original Assignee
Continental Oil Co
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 Continental Oil Co filed Critical Continental Oil Co
Priority to FR7826703A priority Critical patent/FR2436316A1/en
Publication of FR2436316A1 publication Critical patent/FR2436316A1/en
Application granted granted Critical
Publication of FR2436316B1 publication Critical patent/FR2436316B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
    • E21F13/042—Vertical hydraulic conveying of coal
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Servomotors (AREA)

Abstract

The hydraulically actuated control valve includes a cylinder with a piston connected through a shaft to the actuating mechanism in the control valve. Ports are provided on each side of the piston. The piston can be controlled by an electro-hydraulic servo-controlled valve which includes an electrical input, a mechanical feedback input, and two outputs. The outputs are connected to the two ports in the cylinder and a mechanical feedback is coupled to the shaft and the mechanical feedback input of the control valve. An electrical circuit is coupled to the electrical input of the servo-controlled valve to signal the hydraulic portion of the valve. A control serially connects a solenoid valve in one of the lines of the hydraulic output of the servo-controlled valve with one of the ports in the cylinder. The solenoid valve can be bypassed with a needle valve or a controllable valve. A mechanical actuator on the shaft is coupled through an electrical circuit to the solenoid valve.
FR7826703A 1978-09-18 1978-09-18 Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed Granted FR2436316A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7826703A FR2436316A1 (en) 1978-09-18 1978-09-18 Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7826703A FR2436316A1 (en) 1978-09-18 1978-09-18 Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed

Publications (2)

Publication Number Publication Date
FR2436316A1 true FR2436316A1 (en) 1980-04-11
FR2436316B1 FR2436316B1 (en) 1983-01-07

Family

ID=9212738

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826703A Granted FR2436316A1 (en) 1978-09-18 1978-09-18 Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed

Country Status (1)

Country Link
FR (1) FR2436316A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1131874A (en) * 1954-04-06 1957-02-28 Sulzer Ag Flow regulator for pressurized fluids
US2876789A (en) * 1957-10-30 1959-03-10 Simplex Valve And Meter Compan Apparatus for use with liquid enclosures
US3091140A (en) * 1961-01-07 1963-05-28 Kralowetz Bruno Hydraulic positioning system for gripping heads of forging machines
US3216444A (en) * 1964-09-02 1965-11-09 Herner Ray Howard Bi-directional variable flow rate control valve
FR2201398A1 (en) * 1972-10-03 1974-04-26 Continental Oil Co
FR2327944A1 (en) * 1975-10-13 1977-05-13 Continental Oil Co Conveyor for powdered bulk solids - produces slurry from powder and carrier liquid with monitored mixing and pumping rates

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1131874A (en) * 1954-04-06 1957-02-28 Sulzer Ag Flow regulator for pressurized fluids
US2876789A (en) * 1957-10-30 1959-03-10 Simplex Valve And Meter Compan Apparatus for use with liquid enclosures
US3091140A (en) * 1961-01-07 1963-05-28 Kralowetz Bruno Hydraulic positioning system for gripping heads of forging machines
US3216444A (en) * 1964-09-02 1965-11-09 Herner Ray Howard Bi-directional variable flow rate control valve
FR2201398A1 (en) * 1972-10-03 1974-04-26 Continental Oil Co
FR2327944A1 (en) * 1975-10-13 1977-05-13 Continental Oil Co Conveyor for powdered bulk solids - produces slurry from powder and carrier liquid with monitored mixing and pumping rates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV292/64 *

Also Published As

Publication number Publication date
FR2436316B1 (en) 1983-01-07

Similar Documents

Publication Publication Date Title
US4450753A (en) Electro-hydraulic proportional actuator
EP0313899A3 (en) Flight control system employing two dual controllers operating a dual actuator
GB1338864A (en) Air pressure actuator
SE8004805L (en) DEVICE FOR MEDICAL REGULATION OF A HYDRAULIC MANOVERED PRESS TABLE
FR2421418A1 (en) ELECTROMAGNETIC PRESSURE REGULATOR
ES380366A1 (en) Electro-hydraulic servomechanism
ES8204813A1 (en) AN IMPROVED MECHANICALLY CONTROLLABLE SERVOMECHANISM
ES8606819A1 (en) Balanced output hydraulic actuator system
GB1286424A (en) Power boost mechanism
KR920703939A (en) Travel speed inverter of hydraulic excavator
FR2436316A1 (en) Hydraulic ramping circuit for control valve - has mechanical actuator on piston rod connected to via electrical circuit to solenoid valve which can be by=passed
ES440976A1 (en) Hydraulic valve
US3382769A (en) Digital hydraulic actuator
ATE4966T1 (en) HYDRAULIC CONTROL FOR A DOUBLE ACTUATION CYLINDER IN A CONTINUOUS CASTING PLANT.
JPS57201434A (en) Oil-pressure circuit for hydraulic shovel
GB1234978A (en) Hydraulic presses for pressing artificial stone
ES8106590A1 (en) Variable Speed Hydraulic Transmission
DE59005002D1 (en) Actuator.
GB1462806A (en) Remote controllable earth-moving or construction machine
JPS5520951A (en) Device for operation of hydraulically operated valve
GB1250892A (en)
JPS6424163U (en)
ATE16628T1 (en) ELECTROPNEUMATIC OR ELECTROHYDRAULIC CONVERTER.
GB2005809A (en) Control valve and electrical and hydraulic control system
GB1404049A (en) Actuating devices and to actuating arrangements incorporating such devices

Legal Events

Date Code Title Description
ST Notification of lapse