JPS5510084A - Pressure control method of pump - Google Patents

Pressure control method of pump

Info

Publication number
JPS5510084A
JPS5510084A JP8382178A JP8382178A JPS5510084A JP S5510084 A JPS5510084 A JP S5510084A JP 8382178 A JP8382178 A JP 8382178A JP 8382178 A JP8382178 A JP 8382178A JP S5510084 A JPS5510084 A JP S5510084A
Authority
JP
Japan
Prior art keywords
pressure
sludge
speed motor
pump
adjustable
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
JP8382178A
Other languages
Japanese (ja)
Inventor
Yoshifumi Narisawa
Katsuhiro Kiyono
Masataka Oshiro
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.)
Narasaki Shipbuilding Co Ltd
Original Assignee
Narasaki Shipbuilding 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 Narasaki Shipbuilding Co Ltd filed Critical Narasaki Shipbuilding Co Ltd
Priority to JP8382178A priority Critical patent/JPS5510084A/en
Publication of JPS5510084A publication Critical patent/JPS5510084A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To maintain rotary characteristics and prevent intermittent running by detecting change of pump's pressure due to change of load current in variable speed motor to drive pump and also by controlling rotational frequency comparing the detected change of pressure with standard voltage equivalent to set pressure.
CONSTITUTION: Shaft torque of pressure pump 4 is increased as pressure of pressure hydroextractor 6 is rising by sludge 2 flowing from sludge pipe 5, and also increase is made in load current of power line 7 in adjustable-speed motor 3 inclusive of detecting output of current detector 8. Output of relative amplifier 9 and output of control panel 11 are decreased when approached to electric signal as set by pressure setter 10. Thus transport quantity of sludge is decreased and the pressure is maintained at the set pressure due to decrease of adjustable-speed motor 3. With decrease of pressure, rotating frequency of adjustable-speed motor is increased on the contrary and also transport quantity of sludge is increased. Sludge transport pressure of pressure hydro-extractor is maintained by the set pressure.
COPYRIGHT: (C)1980,JPO&Japio
JP8382178A 1978-07-10 1978-07-10 Pressure control method of pump Pending JPS5510084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8382178A JPS5510084A (en) 1978-07-10 1978-07-10 Pressure control method of pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8382178A JPS5510084A (en) 1978-07-10 1978-07-10 Pressure control method of pump

Publications (1)

Publication Number Publication Date
JPS5510084A true JPS5510084A (en) 1980-01-24

Family

ID=13813347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8382178A Pending JPS5510084A (en) 1978-07-10 1978-07-10 Pressure control method of pump

Country Status (1)

Country Link
JP (1) JPS5510084A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154113A (en) * 1983-02-21 1984-09-03 Sumitomo Bakelite Co Ltd Ultrafiltering method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979029A (en) * 1972-12-07 1974-07-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979029A (en) * 1972-12-07 1974-07-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154113A (en) * 1983-02-21 1984-09-03 Sumitomo Bakelite Co Ltd Ultrafiltering method

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