JPS57153237A - Detecting device for leakage of fluid in system - Google Patents

Detecting device for leakage of fluid in system

Info

Publication number
JPS57153237A
JPS57153237A JP56038875A JP3887581A JPS57153237A JP S57153237 A JPS57153237 A JP S57153237A JP 56038875 A JP56038875 A JP 56038875A JP 3887581 A JP3887581 A JP 3887581A JP S57153237 A JPS57153237 A JP S57153237A
Authority
JP
Japan
Prior art keywords
flow rate
fluid
signal
leakage
differential
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
JP56038875A
Other languages
Japanese (ja)
Inventor
Akio Uehara
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 JP56038875A priority Critical patent/JPS57153237A/en
Publication of JPS57153237A publication Critical patent/JPS57153237A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PURPOSE:To detect the leakage of a fluid accurately with a high sensitivity and a high reliability, by using a weight flow rate obtained by correcting a fluid density, which is changed dependently upon the pressure and the temperature of the fluid in the system, to calculate a differential flow rate. CONSTITUTION:Flow meters 11A-11C and thermometers 12A-12C are arranged in a system inlet piping 4A, a system outlet piping 4B, and a waste water piping 4C in the outlet side of a filter demineralizer 3 respectively. Flow rate signals due to flow meters 11A-11C are corrected with density in correcting operators 13A-13C by fluid temperature signals due to thermometers 12A-12C at respective measure points, and a correct differential flow rate signal, namely, a signal S3 corresponding to an accurate weight flow rate value is always obtained in a differential flow rate operator 14 on a basis of these corrected flow rate signals. When this differential flow rate signal S3 exceeds a preliminarily set value, valves 5A and 5B are closed by a signal S4 outputted from a leakage discriminator 15 to isolate the system.
JP56038875A 1981-03-18 1981-03-18 Detecting device for leakage of fluid in system Pending JPS57153237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56038875A JPS57153237A (en) 1981-03-18 1981-03-18 Detecting device for leakage of fluid in system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56038875A JPS57153237A (en) 1981-03-18 1981-03-18 Detecting device for leakage of fluid in system

Publications (1)

Publication Number Publication Date
JPS57153237A true JPS57153237A (en) 1982-09-21

Family

ID=12537383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56038875A Pending JPS57153237A (en) 1981-03-18 1981-03-18 Detecting device for leakage of fluid in system

Country Status (1)

Country Link
JP (1) JPS57153237A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6481265B1 (en) * 2000-11-07 2002-11-19 Gunther Weber Method and apparatus for detecting leaks
JP2016014335A (en) * 2014-07-01 2016-01-28 三菱重工業株式会社 Multistage compressor system, controller, abnormality determination method, and program

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6481265B1 (en) * 2000-11-07 2002-11-19 Gunther Weber Method and apparatus for detecting leaks
JP2016014335A (en) * 2014-07-01 2016-01-28 三菱重工業株式会社 Multistage compressor system, controller, abnormality determination method, and program
US10746182B2 (en) 2014-07-01 2020-08-18 Mitsubishi Heavy Industries Compressor Corporation Multi-stage compressor system, control device, malfunction determination method, and program

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