GB1522892A - Electrical control circuit arrangement for operating n electrically energizable units - Google Patents

Electrical control circuit arrangement for operating n electrically energizable units

Info

Publication number
GB1522892A
GB1522892A GB1528876A GB1528876A GB1522892A GB 1522892 A GB1522892 A GB 1522892A GB 1528876 A GB1528876 A GB 1528876A GB 1528876 A GB1528876 A GB 1528876A GB 1522892 A GB1522892 A GB 1522892A
Authority
GB
United Kingdom
Prior art keywords
pump
starting
pumps
pressure
energized
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
GB1528876A
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.)
GUINARD POMPES
Original Assignee
GUINARD POMPES
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 GUINARD POMPES filed Critical GUINARD POMPES
Publication of GB1522892A publication Critical patent/GB1522892A/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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • 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
    • F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Basic Packing Technique (AREA)
  • Motor And Converter Starters (AREA)

Abstract

1522892 Automatic control of pressure ETABS POMPES GUINARD 14 April 1976 [15 April 1975] 15288/76 Heading G3R A physical variable e.g. water pressure is maintained at the desired level by varying the number of pumps P 1 -P 3 in response to a pressure detector 1. Pumps P 1 -P 3 are connected between supply lines L 1 and L 2 by starting contacts 8 and also by continuous supply circuits e.g. 13, t 1 , R 1 . A low pressure causes the starting circuits of each pump in turn to be energized by rotation of cams 7 1 -7 3 after which the continuous supply circuits hold the pumps on. A high pressure on the other hand causes timer T to be energized. This cuts out each continuous supply circuit in turn, according to built in delays, via contacts t 1 -t 3 leaving only that pump which happens to have its starting circuit energized, operative as a holding pump. A timer T' ensures that the pump starting cams 7 1 -7 3 always come to rest in such a position that when they are next rotated a pump will be started immediately.
GB1528876A 1975-04-15 1976-04-14 Electrical control circuit arrangement for operating n electrically energizable units Expired GB1522892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7511625A FR2307993A1 (en) 1975-04-15 1975-04-15 INSTALLATION OF A BOOSTER, ESPECIALLY FOR THE DISTRIBUTION OF WATER IN BUILDINGS

Publications (1)

Publication Number Publication Date
GB1522892A true GB1522892A (en) 1978-08-31

Family

ID=9153927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1528876A Expired GB1522892A (en) 1975-04-15 1976-04-14 Electrical control circuit arrangement for operating n electrically energizable units

Country Status (5)

Country Link
DE (1) DE2616549C3 (en)
ES (1) ES446960A1 (en)
FR (1) FR2307993A1 (en)
GB (1) GB1522892A (en)
IT (1) IT1080741B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2538084A3 (en) * 2011-06-23 2018-07-18 General Electric Company Validation of working fluid parameter indicator sensitivity in system with centrifugal machines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353730A1 (en) * 1976-04-09 1977-12-30 Pumpex Production Ab Hydrodynamic pumping set control system - gives continuously variable output dependent on value detected by feeler
DE102010055841A1 (en) * 2010-12-23 2012-06-28 Wilo Se Method for operating a double pump or multi-pump unit
CN114411882B (en) * 2022-02-10 2024-03-26 中国电建集团贵阳勘测设计研究院有限公司 Pump station arrangement structure based on small flow and large lift amplitude

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2165138A5 (en) * 1971-12-20 1973-08-03 Laks Maurice

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2538084A3 (en) * 2011-06-23 2018-07-18 General Electric Company Validation of working fluid parameter indicator sensitivity in system with centrifugal machines

Also Published As

Publication number Publication date
DE2616549A1 (en) 1976-10-21
FR2307993B1 (en) 1978-09-01
DE2616549C3 (en) 1978-08-03
ES446960A1 (en) 1977-06-01
FR2307993A1 (en) 1976-11-12
IT1080741B (en) 1985-05-16
DE2616549B2 (en) 1977-12-08

Similar Documents

Publication Publication Date Title
JPS5214854A (en) Standard voltage supplying circuit
GB1522892A (en) Electrical control circuit arrangement for operating n electrically energizable units
JPS5218364A (en) Electronic time switch
JPS51123080A (en) Variable capacitance element
JPS5312240A (en) Cut-off system of faulty terminal unit
JPS5255449A (en) Microprocessor
JPS52141550A (en) Pulse expanding circuit
JPS5219923A (en) Memory unit
JPS5367344A (en) Relay control circuit
JPS5331911A (en) Control system for subscriber dial-tone
ES421378A1 (en) A delay timing circuit arrangement for use with a control circuit. (Machine-translation by Google Translate, not legally binding)
JPS5312263A (en) Timer circuit for initial setting
JPS52154672A (en) Timer device
JPS5384201A (en) Parallel automatic operation of water feed pump
JPS51118025A (en) Armature current controller
JPS527511A (en) Electric vehicle control system
JPS5217611A (en) Rotation controlling circuit for motor
JPS51147719A (en) Boosting circuit
JPS5329602A (en) Power supply connection circuit
JPS51147731A (en) Concentrated control circuit
JPS51134699A (en) Slot machine electronic control circuit
JPS522141A (en) Interruption control system
JPS5367345A (en) Relay control circuit
JPS51132756A (en) Switch circuit
JPS5356711A (en) Starting controller of rotary compressor

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee