GB950586A - Improvements in or relating to pumps - Google Patents

Improvements in or relating to pumps

Info

Publication number
GB950586A
GB950586A GB1844459A GB1844459A GB950586A GB 950586 A GB950586 A GB 950586A GB 1844459 A GB1844459 A GB 1844459A GB 1844459 A GB1844459 A GB 1844459A GB 950586 A GB950586 A GB 950586A
Authority
GB
United Kingdom
Prior art keywords
pump
piston
swash plate
stage
casing
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
GB1844459A
Inventor
Allen Chivers Walker
Alan Cameron-Johnson
John Alfred Chilman
Michael William Smart
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.)
Dowty Rotol Ltd
Original Assignee
Dowty Rotol 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 Dowty Rotol Ltd filed Critical Dowty Rotol Ltd
Priority to GB1844459A priority Critical patent/GB950586A/en
Priority to DE19601403757 priority patent/DE1403757A1/en
Publication of GB950586A publication Critical patent/GB950586A/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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by wind motors
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F04B49/103—Responsive to speed
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps

Landscapes

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

Abstract

950,586. Swash plate pumps. DOWTY ROTOL Ltd. May 25, 1960 [May 29, 1959], No. 18444/59. Heading F1A. A first stage centrifugal pump 15 drives the swash plate 13 of a pump 14 in which the pistons 21 have lateral spill ports 37, which progressively release fluid upon movement of a sliding collar 38 controlled by a doubleacting piston 46 working, under the control of a piston 34 in an overriding relief valve casing 32, to progressively off-load the pump 14 as the speed of the driven shaft 12 of pump 15 drops below a predetermined amount. The two sides of a portion 47 of the piston 46 housed in a casing 49, are respectively fed by the first stage delivery conduit 19 and a conduit 60 from the input side of the first stage pump 15. Upon excessive speed and output of the pump 15 the piston 34 relieves the pressure on a portion 50 of the piston 46 inserted in a chamber 51 in the casing 49, so that the piston 47 moves the collar 38 to expose the ports 37 and off-load the pump 15. In a modified unit, Fig. 2 (not shown), the swash plate pump is primed by a first stage gear pump and both are driven by an air turbine. Valves relieve pressure in the delivery conduit from the gear pump and the swash plate pump respectively.
GB1844459A 1959-05-25 1959-05-25 Improvements in or relating to pumps Expired GB950586A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1844459A GB950586A (en) 1959-05-25 1959-05-25 Improvements in or relating to pumps
DE19601403757 DE1403757A1 (en) 1959-05-25 1960-05-30 pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1844459A GB950586A (en) 1959-05-25 1959-05-25 Improvements in or relating to pumps

Publications (1)

Publication Number Publication Date
GB950586A true GB950586A (en) 1964-02-26

Family

ID=10112534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1844459A Expired GB950586A (en) 1959-05-25 1959-05-25 Improvements in or relating to pumps

Country Status (2)

Country Link
DE (1) DE1403757A1 (en)
GB (1) GB950586A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367476A1 (en) * 1988-11-02 1990-05-09 Vickers Systems Limited Variable displacement pumps
CN113510176A (en) * 2020-04-10 2021-10-19 初冠南 Pressurizing heading forming device
EP4253254A1 (en) * 2022-03-28 2023-10-04 Hamilton Sundstrand Corporation Electronic controller with off-load and anti-stall capability for ram air turbine variable displacement hydraulic pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034188A1 (en) * 2010-08-12 2012-02-16 Mpp Gbr Adjustable hydraulic axial piston engine, in particular for wind power plants (HPP) with hydrostatic main drive and method of control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367476A1 (en) * 1988-11-02 1990-05-09 Vickers Systems Limited Variable displacement pumps
CN113510176A (en) * 2020-04-10 2021-10-19 初冠南 Pressurizing heading forming device
CN113510176B (en) * 2020-04-10 2024-01-19 初冠南 Pressurizing upsetting forming device
EP4253254A1 (en) * 2022-03-28 2023-10-04 Hamilton Sundstrand Corporation Electronic controller with off-load and anti-stall capability for ram air turbine variable displacement hydraulic pump
US11820528B2 (en) 2022-03-28 2023-11-21 Hamilton Sundstrand Corporation Electronic controller with off-load and anti-stall capability for Ram air turbine variable displacement hydraulic pump

Also Published As

Publication number Publication date
DE1403757A1 (en) 1968-11-21

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