GB1157943A - Fluid Pressure Control Systems - Google Patents

Fluid Pressure Control Systems

Info

Publication number
GB1157943A
GB1157943A GB38599/67A GB3859967A GB1157943A GB 1157943 A GB1157943 A GB 1157943A GB 38599/67 A GB38599/67 A GB 38599/67A GB 3859967 A GB3859967 A GB 3859967A GB 1157943 A GB1157943 A GB 1157943A
Authority
GB
United Kingdom
Prior art keywords
valve
conduit
liquid
tank
pressure
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
GB38599/67A
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.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin 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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Priority to GB38599/67A priority Critical patent/GB1157943A/en
Publication of GB1157943A publication Critical patent/GB1157943A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/04—Level control, e.g. controlling quantity of material stored in vessel with auxiliary non-electric power

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

1,157,943. Fluid-pressure servomotor systems. PARKER-HANNIFIN CORP. Aug. 22, 1967, No. 38599/67. Heading G3P. A fluid system comprises a tank 2, Fig. 1, a pump 4 having an intake port 3 in communication with liquid in the tank and a discharge port for delivery of liquid through a conduit 5, 17, valve means 6 operative in response to variation in liquid pressure adjacent the downstream end of the conduit to vary the flow through the conduit, and pump anti-cavitation means 27, 28 operative in response to a decrease of liquid in the tank to a predetermined minimum level to conduct liquid pressure adjacent the upstream end of the conduit to operate the valve means to reduce or discontinue the flow of liquid from the downstream end of the conduit. In the preferred embodiment, the conduit supplies a fuel delivery nozzle 1 and the valve 6 has a main closure 7 controlled by a spring-loaded pilot valve 11 subjected to downstream pressure through a conduit 18. When the liquid in the tank falls to a predetermined level, fluid from a jet nozzle 27 enters a receiver 28 to operate a shuttle valve 24 and close both the main and pilot closures 7, 11. In a modified arrangement, the valve means are incorporated in a by-pass line between the delivery conduit and the tank. Fig. 4 shows a further embodiment in which a by-pass valve 6<SP>1</SP> controlled by the pressure at a point 58 in the delivery conduit and by the level in the tank is provided in addition to a valve 57<SP>1</SP> controlled by a valve 70 which requires a lever 71 to be held in an actuated position to conduct air under pressure to the pilot valve 60. If the lever 71 is released, both pilot valves are closed to shut off flow through the delivery line and open the by-pass. Only the by-pass valve 6<SP>1</SP> is operated, however, in response to a fall in liquid level causing an actuator 81 to shift a valve 74 and connect a chamber 19 to atmosphere. The by-pass valve may be omitted and the valve in the delivery conduit made responsive to liquid level and downstream pressure as well as to operation of the valve 70.
GB38599/67A 1967-08-22 1967-08-22 Fluid Pressure Control Systems Expired GB1157943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB38599/67A GB1157943A (en) 1967-08-22 1967-08-22 Fluid Pressure Control Systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38599/67A GB1157943A (en) 1967-08-22 1967-08-22 Fluid Pressure Control Systems

Publications (1)

Publication Number Publication Date
GB1157943A true GB1157943A (en) 1969-07-09

Family

ID=10404506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38599/67A Expired GB1157943A (en) 1967-08-22 1967-08-22 Fluid Pressure Control Systems

Country Status (1)

Country Link
GB (1) GB1157943A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371225A2 (en) * 1988-10-28 1990-06-06 AlliedSignal Inc. Fuel system for gas turbine engines
FR2723976A1 (en) * 1994-08-24 1996-03-01 Ksb Sa WATER RESTITUTION ENCLOSURE, ESPECIALLY USED IN A SUPPLY SYSTEM.
CN108052131A (en) * 2017-12-20 2018-05-18 安徽摩诃环保科技有限公司 Suppressing dust with dry mist autocontrol water tank

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371225A2 (en) * 1988-10-28 1990-06-06 AlliedSignal Inc. Fuel system for gas turbine engines
EP0371225A3 (en) * 1988-10-28 1990-07-25 AlliedSignal Inc. Fuel system for gas turbine engines
FR2723976A1 (en) * 1994-08-24 1996-03-01 Ksb Sa WATER RESTITUTION ENCLOSURE, ESPECIALLY USED IN A SUPPLY SYSTEM.
EP0699806A1 (en) * 1994-08-24 1996-03-06 Ksb S.A. Housing for the restitution of waste water especially in a supply installation
CN108052131A (en) * 2017-12-20 2018-05-18 安徽摩诃环保科技有限公司 Suppressing dust with dry mist autocontrol water tank

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee