JPS57186080A - Command device for operating number of rain pump - Google Patents

Command device for operating number of rain pump

Info

Publication number
JPS57186080A
JPS57186080A JP7053181A JP7053181A JPS57186080A JP S57186080 A JPS57186080 A JP S57186080A JP 7053181 A JP7053181 A JP 7053181A JP 7053181 A JP7053181 A JP 7053181A JP S57186080 A JPS57186080 A JP S57186080A
Authority
JP
Japan
Prior art keywords
pump
water level
level variation
dangerous
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.)
Pending
Application number
JP7053181A
Other languages
Japanese (ja)
Inventor
Koji Horie
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7053181A priority Critical patent/JPS57186080A/en
Publication of JPS57186080A publication Critical patent/JPS57186080A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Sewage (AREA)

Abstract

PURPOSE:In a sewerage instrumentation system, to optimize the operation of the rain pump by detecting the water level variation rate of the rain pump then comparing with the dangerous rate for said water level and producing the additional pump operation command. CONSTITUTION:The water level of a pump well 6 is measured by a water level meter 1 while the level variation is detected with predetermined interval through a water level variation detecting circuit 104, then a dangerous water level variation decision circuit 109 and a pump stopping water level variation decision circuit 110 are employed to determine the dangerous level variation for each pump well water level and the stoppable level variation rate for the pump 3. On the other hand, said level is corrected by an operating state correction dangerous level variation rate circuit 111 and an operating state correction pump stopping water level variation rate decision circuit 112 while using the output from a pump delivery calculating circuit 108 to provide the additional pump operating command 106 and the stopping command 107 thus to control the operation of the pump 3. Consequently the operation of a rain pump can be optimized.
JP7053181A 1981-05-11 1981-05-11 Command device for operating number of rain pump Pending JPS57186080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7053181A JPS57186080A (en) 1981-05-11 1981-05-11 Command device for operating number of rain pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7053181A JPS57186080A (en) 1981-05-11 1981-05-11 Command device for operating number of rain pump

Publications (1)

Publication Number Publication Date
JPS57186080A true JPS57186080A (en) 1982-11-16

Family

ID=13434204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7053181A Pending JPS57186080A (en) 1981-05-11 1981-05-11 Command device for operating number of rain pump

Country Status (1)

Country Link
JP (1) JPS57186080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04297639A (en) * 1991-03-27 1992-10-21 Hitachi Ltd Flash floor detector in drainage equipment, forecasting method for flash flood arrival time, and drainage equipment using the forecasting method
JPH08232331A (en) * 1995-11-27 1996-09-10 Hitachi Ltd Flash flood detector in drainage system forecast method for flash flood arrival time and drainage system formed by using forecast method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04297639A (en) * 1991-03-27 1992-10-21 Hitachi Ltd Flash floor detector in drainage equipment, forecasting method for flash flood arrival time, and drainage equipment using the forecasting method
JP2581616B2 (en) * 1991-03-27 1997-02-12 株式会社日立製作所 Method for estimating flash flood arrival time in drainage system, and drainage system using the prediction method
JPH08232331A (en) * 1995-11-27 1996-09-10 Hitachi Ltd Flash flood detector in drainage system forecast method for flash flood arrival time and drainage system formed by using forecast method therefor

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