JPS5644484A - Start controller for pump - Google Patents

Start controller for pump

Info

Publication number
JPS5644484A
JPS5644484A JP11798479A JP11798479A JPS5644484A JP S5644484 A JPS5644484 A JP S5644484A JP 11798479 A JP11798479 A JP 11798479A JP 11798479 A JP11798479 A JP 11798479A JP S5644484 A JPS5644484 A JP S5644484A
Authority
JP
Japan
Prior art keywords
pump
water level
suction tank
suction
variation
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
JP11798479A
Other languages
Japanese (ja)
Inventor
Ichiro Harada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11798479A priority Critical patent/JPS5644484A/en
Publication of JPS5644484A publication Critical patent/JPS5644484A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To reduce the start/stop frequency of pump and to reduce the size of suction tank, by anticipating the variation of water level in the suction tank and setting the starting time point of pump from the anticipated level.
CONSTITUTION: The suction side of pump 1 is submerged into a suction tank 2 while the delivery side is connected through a valve 3 with a delivery tube 4. The driving machine 5 such as gasoline engine is coupled through a coupling with a pump 1. A water level meter 7 will convert the water level in the suction tank 2 to an electric signal which is provided to an arithmetic unit 8. The arithmetic unit 8 will calculate the variation of water level which is used to provide a command for performing the starting/stopping of pump 1 to a start/stop device 9.
COPYRIGHT: (C)1981,JPO&Japio
JP11798479A 1979-09-17 1979-09-17 Start controller for pump Pending JPS5644484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11798479A JPS5644484A (en) 1979-09-17 1979-09-17 Start controller for pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11798479A JPS5644484A (en) 1979-09-17 1979-09-17 Start controller for pump

Publications (1)

Publication Number Publication Date
JPS5644484A true JPS5644484A (en) 1981-04-23

Family

ID=14725129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11798479A Pending JPS5644484A (en) 1979-09-17 1979-09-17 Start controller for pump

Country Status (1)

Country Link
JP (1) JPS5644484A (en)

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