JPS5751981A - Pump operation control device - Google Patents

Pump operation control device

Info

Publication number
JPS5751981A
JPS5751981A JP12673780A JP12673780A JPS5751981A JP S5751981 A JPS5751981 A JP S5751981A JP 12673780 A JP12673780 A JP 12673780A JP 12673780 A JP12673780 A JP 12673780A JP S5751981 A JPS5751981 A JP S5751981A
Authority
JP
Japan
Prior art keywords
change
pump
rate
certain
command signal
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.)
Granted
Application number
JP12673780A
Other languages
Japanese (ja)
Other versions
JPS6343590B2 (en
Inventor
Michio Fukuda
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 JP12673780A priority Critical patent/JPS5751981A/en
Publication of JPS5751981A publication Critical patent/JPS5751981A/en
Publication of JPS6343590B2 publication Critical patent/JPS6343590B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Pressure (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To avoid abrupt change of pressure by a method wherein rate-of-change restriction circuit is operated when adding or stopping pump operation by controlling that MV (rotation speed command signal) approaches to ND (temporary set revolution speed) with a certain rate-of-change.
CONSTITUTION: During operation of the pump 13a, when the flow rate in service pipe line 12 detected by a flow meter 16 was determined to exceed a certain value by operation number decision part 18, pump number increase command signal SON is issued from the decision part 18, and the signal SON is fed to pump 13b through contact 19. On the other hand, pressure switch 15 operates when the exit pressure in parallel line 12b exceeds a certain value, and switches SIa, SIb are opened by a certain retardation time by way of timer circuit T1. Co-operating with this, the switch SN is released to operate rate-of-change control circuit 32 separated from essential system control, and the rotation speed command signal MV for pumps 13a, 13b is controlled so that it will approach to temporary set revolution speed when adding pump operation ND with a certain rate-of-change. This arrangement serves to prevent abrupt increase of exit pressure.
COPYRIGHT: (C)1982,JPO&Japio
JP12673780A 1980-09-12 1980-09-12 Pump operation control device Granted JPS5751981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12673780A JPS5751981A (en) 1980-09-12 1980-09-12 Pump operation control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12673780A JPS5751981A (en) 1980-09-12 1980-09-12 Pump operation control device

Publications (2)

Publication Number Publication Date
JPS5751981A true JPS5751981A (en) 1982-03-27
JPS6343590B2 JPS6343590B2 (en) 1988-08-31

Family

ID=14942642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12673780A Granted JPS5751981A (en) 1980-09-12 1980-09-12 Pump operation control device

Country Status (1)

Country Link
JP (1) JPS5751981A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143473A (en) * 1984-08-08 1986-03-03 Res Dev Corp Of Japan Thermionic emission type electrostatic induction thyristor
JPS62263677A (en) * 1986-05-09 1987-11-16 Mitsubishi Electric Corp Electrostatic induction type semiconductor device and its manufacture
JP2007024325A (en) * 2005-07-12 2007-02-01 Dai-Dan Co Ltd Control method of heat transfer device in air conditioning heat source system
JP2008086242A (en) * 2006-09-29 2008-04-17 Fujitsu Ltd Discharge amount control method, discharge pressure control method, injection device, method for manufacturing microscopic object, discharge amount control device, and discharge amount control program

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022301A (en) * 1973-07-02 1975-03-10
JPS5417441A (en) * 1977-07-07 1979-02-08 Univ Tokai Vertical shaft type air force turbine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022301A (en) * 1973-07-02 1975-03-10
JPS5417441A (en) * 1977-07-07 1979-02-08 Univ Tokai Vertical shaft type air force turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143473A (en) * 1984-08-08 1986-03-03 Res Dev Corp Of Japan Thermionic emission type electrostatic induction thyristor
JPS62263677A (en) * 1986-05-09 1987-11-16 Mitsubishi Electric Corp Electrostatic induction type semiconductor device and its manufacture
JP2007024325A (en) * 2005-07-12 2007-02-01 Dai-Dan Co Ltd Control method of heat transfer device in air conditioning heat source system
JP2008086242A (en) * 2006-09-29 2008-04-17 Fujitsu Ltd Discharge amount control method, discharge pressure control method, injection device, method for manufacturing microscopic object, discharge amount control device, and discharge amount control program
US8124031B2 (en) 2006-09-29 2012-02-28 Fujitsu Limited Discharge volume control method, discharge pressure control method, and microbody forming method
US8241590B2 (en) 2006-09-29 2012-08-14 Fujitsu Limited Discharge volume control method, discharge pressure control method, and microbody forming method

Also Published As

Publication number Publication date
JPS6343590B2 (en) 1988-08-31

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