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GB805540A - An improved liquid pump - Google Patents

An improved liquid pump

Info

Publication number
GB805540A
GB805540A GB437853A GB437853A GB805540A GB 805540 A GB805540 A GB 805540A GB 437853 A GB437853 A GB 437853A GB 437853 A GB437853 A GB 437853A GB 805540 A GB805540 A GB 805540A
Authority
GB
United Kingdom
Prior art keywords
cylinder
liquid
high pressure
piston
gas
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
GB437853A
Inventor
Archibald Walter Sharpe
Frederick Errington
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.)
Sperry Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co Ltd
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 Sperry Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB437853A priority Critical patent/GB805540A/en
Publication of GB805540A publication Critical patent/GB805540A/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
    • F04B9/131—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members
    • F04B9/135—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by two single-acting elastic-fluid motors, each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L23/00—Valves controlled by impact by piston, e.g. in free-piston machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F01L25/063—Arrangements with main and auxiliary valves, at least one of them being fluid-driven the auxiliary valve being actuated by the working motor-piston or piston-rod

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Reciprocating Pumps (AREA)

Abstract

805,540. Reciprocating pumps. SPERRY GYROSCOPE CO. Ltd. Nov. 13, 1953 [Feb. 17, 1953], No. 4378/53. Class 102(1). [Also in Group XXVI] A double acting liquid pump for supplying liquid at substantially the pressure of a supply of gas comprises two coaxially arranged cylinders spaced apart by a fixed member of a sliding valve device, a free piston in each cylinder, each piston being mechanically independent of the other, a space for liquid on the inner side and a space for gas on the outer side of each piston, an inlet duet for low pressure liquid for each cylinder and an outlet duct for high pressure liquid for each cylinder, a non-return valve normally closed in each duct, and a movable member of the sliding valve device extending into the liquid space of each cylinder and operated by the pressure of the liquid, the arrangement being such that when the piston in one cylinder is at or near the end of its inward travel gas under pressure is admitted to the gas space of the other cylinder and gas is allowed to escape from the first cylinder. Referring to Fig. 1, low pressure liquid from an accumulator (not shown) is supplied through a channel 3 and non-return valves 5 to the cylinders 1 at the inner sides of the pistons 2 and the high pressure liquid is delivered from the inner sides of the piston through non-return valves 8 and outlet channel 7. High pressure gas is supplied through channel 9 to the outer end of one or other of the cylinders according to the position of the shuttle valve 10, the outer end of the other cylinder being connected to an exhaust channel 9A or 9B ; the position of the shuttle valve is changed over by each piston in turn as it reaches the end of its stroke. During the changeover only a slightly reduced high pressure liquid is available from the pump and if this interruption cannot be permitted these may be provided a small high pressure accumulator into which the cylinders supply high pressure liquid and from which high pressure liquid can be withdrawn even during the changeover period.
GB437853A 1953-02-17 1953-02-17 An improved liquid pump Expired GB805540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB437853A GB805540A (en) 1953-02-17 1953-02-17 An improved liquid pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB437853A GB805540A (en) 1953-02-17 1953-02-17 An improved liquid pump

Publications (1)

Publication Number Publication Date
GB805540A true GB805540A (en) 1958-12-10

Family

ID=9776035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB437853A Expired GB805540A (en) 1953-02-17 1953-02-17 An improved liquid pump

Country Status (1)

Country Link
GB (1) GB805540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061706A1 (en) * 1981-03-28 1982-10-06 DEPA GmbH Air-pressure actuated double-diaphragm pump
GB2162591A (en) * 1984-08-02 1986-02-05 Shoketsu Kinzoku Kogyo Kk Fluid pressure booster

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061706A1 (en) * 1981-03-28 1982-10-06 DEPA GmbH Air-pressure actuated double-diaphragm pump
GB2162591A (en) * 1984-08-02 1986-02-05 Shoketsu Kinzoku Kogyo Kk Fluid pressure booster
FR2568634A1 (en) * 1984-08-02 1986-02-07 Shoketsu Kinzoku Kogyo Kk FLUID SUPPRESSOR

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