JPS578384A - Pump performance measuring method - Google Patents

Pump performance measuring method

Info

Publication number
JPS578384A
JPS578384A JP8109480A JP8109480A JPS578384A JP S578384 A JPS578384 A JP S578384A JP 8109480 A JP8109480 A JP 8109480A JP 8109480 A JP8109480 A JP 8109480A JP S578384 A JPS578384 A JP S578384A
Authority
JP
Japan
Prior art keywords
detected
liquid level
change
pump
values
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
JP8109480A
Other languages
Japanese (ja)
Inventor
Kiyoshi Ochi
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP8109480A priority Critical patent/JPS578384A/en
Publication of JPS578384A publication Critical patent/JPS578384A/en
Pending legal-status Critical Current

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  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To accurately find out a change of performances of an already installed pump by measuring a change of the pressure and level of liquid inside an accummulator and by comparing values thus detected with detected values in the past.
CONSTITUTION: An accumulator 5 is disposed in the intermediate of a pipe from a pump 2 to a valve 3. A balanced condition is reached when the level of liquid in the accumulator is at WL0, wherein the pump discharge rate Q0 and the jet rate from a desk header 4 are equal to each other. The liquid level position in this condition is represented as H0, the inside pressure as P0, and the inner sectional area as A. A valve 3 is closed quickly in this condition, and the liquid level after a unit time period is represented as WL1, the liquid level position as H1, and the inside pressure as P1. A change in the liquid level (H1-H0) is detected by a liquid level signal generator 6 while a change of the inside pressure (P1-P0) is detected by a pressure signal generator 7. The thus detected values are compared with the values which were obtained in the past in order to accurately find out performances of the pump.
COPYRIGHT: (C)1982,JPO&Japio
JP8109480A 1980-06-16 1980-06-16 Pump performance measuring method Pending JPS578384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8109480A JPS578384A (en) 1980-06-16 1980-06-16 Pump performance measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8109480A JPS578384A (en) 1980-06-16 1980-06-16 Pump performance measuring method

Publications (1)

Publication Number Publication Date
JPS578384A true JPS578384A (en) 1982-01-16

Family

ID=13736794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8109480A Pending JPS578384A (en) 1980-06-16 1980-06-16 Pump performance measuring method

Country Status (1)

Country Link
JP (1) JPS578384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100344875C (en) * 2005-03-25 2007-10-24 周巽 Method for judging whether key characteristics of a compressor are qualified or not by exhaust pressure comparison

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100344875C (en) * 2005-03-25 2007-10-24 周巽 Method for judging whether key characteristics of a compressor are qualified or not by exhaust pressure comparison

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