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JPS5598327A - Volume change adder for leakage detecting device - Google Patents

Volume change adder for leakage detecting device

Info

Publication number
JPS5598327A
JPS5598327A JP677579A JP677579A JPS5598327A JP S5598327 A JPS5598327 A JP S5598327A JP 677579 A JP677579 A JP 677579A JP 677579 A JP677579 A JP 677579A JP S5598327 A JPS5598327 A JP S5598327A
Authority
JP
Japan
Prior art keywords
piston
volume
spacing
movable
stopper
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
JP677579A
Other languages
Japanese (ja)
Inventor
Akio Furuse
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.)
Cosmo Instruments Co Ltd
Original Assignee
Cosmo Instruments 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 Cosmo Instruments Co Ltd filed Critical Cosmo Instruments Co Ltd
Priority to JP677579A priority Critical patent/JPS5598327A/en
Publication of JPS5598327A publication Critical patent/JPS5598327A/en
Pending legal-status Critical Current

Links

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  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE: To give a precise volume change by arranging a movable piston in a cylinder provided with stoppers at both ends.
CONSTITUTION: A movable piston 34 is arranged in a cylinder 33 having both ends closed by end plates 31, 32 and a fixed stopper 38 and the inside thereof is air tightly divided into spacings 35W37 and respectively connected to an air pressure source 11, a work 16, and a reference tank 17 through passages 53W55 and magnet valves 13W15 and 56 and the like. Thus, a micro meter head 41 is adjusted to set a movable stopper 39 to a predetermined position, air pressure from the air source 11 is introduced into a spacing 35 to move the piston 34 rightward until the shaft thereof 44 abuts against the movable stopper 39, and then a spacing is communicated with the atmosphere by the control of the magnet valve 56, so that the piston 34 moves leftward until it abuts against a fixed stopper 38 instantaneously by means of a spring 46 and volume in the spacing 36 or, the volume at the side of the work 16 is instantaneoulsy increased by volume determined by the distance of movement L.
COPYRIGHT: (C)1980,JPO&Japio
JP677579A 1979-01-22 1979-01-22 Volume change adder for leakage detecting device Pending JPS5598327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP677579A JPS5598327A (en) 1979-01-22 1979-01-22 Volume change adder for leakage detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP677579A JPS5598327A (en) 1979-01-22 1979-01-22 Volume change adder for leakage detecting device

Publications (1)

Publication Number Publication Date
JPS5598327A true JPS5598327A (en) 1980-07-26

Family

ID=11647539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP677579A Pending JPS5598327A (en) 1979-01-22 1979-01-22 Volume change adder for leakage detecting device

Country Status (1)

Country Link
JP (1) JPS5598327A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57165732A (en) * 1981-04-03 1982-10-12 Cosmo Keiki:Kk Device for measuring amount of leakage
US5090234A (en) * 1990-08-30 1992-02-25 Vista Research, Inc. Positive displacement pump apparatus and methods for detection of leaks in pressurized pipeline systems
WO1992004610A1 (en) * 1990-08-30 1992-03-19 Vista Research, Inc. Apparatus and methods for detection of leaks in pressurized pipeline systems
US5163314A (en) * 1990-08-30 1992-11-17 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems using gas controlled apparatus
US5170657A (en) * 1990-08-30 1992-12-15 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems
US5189904A (en) * 1990-08-30 1993-03-02 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems using piston displacement apparatus
JPH05340836A (en) * 1992-06-08 1993-12-24 Fukuda:Kk Fluid sucking and discharging device
US5375455A (en) * 1990-08-30 1994-12-27 Vista Research, Inc. Methods for measuring flow rates to detect leaks
US5948969A (en) * 1997-10-20 1999-09-07 Vista Research, Inc. Methods for measuring the flow rate due to a leak in a pressurized pipe system
KR100888865B1 (en) 2007-10-11 2009-03-17 (주)삼우기계 Hydraulic driven water pump

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57165732A (en) * 1981-04-03 1982-10-12 Cosmo Keiki:Kk Device for measuring amount of leakage
US5090234A (en) * 1990-08-30 1992-02-25 Vista Research, Inc. Positive displacement pump apparatus and methods for detection of leaks in pressurized pipeline systems
WO1992004610A1 (en) * 1990-08-30 1992-03-19 Vista Research, Inc. Apparatus and methods for detection of leaks in pressurized pipeline systems
US5163314A (en) * 1990-08-30 1992-11-17 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems using gas controlled apparatus
US5170657A (en) * 1990-08-30 1992-12-15 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems
US5189904A (en) * 1990-08-30 1993-03-02 Vista Research, Inc. Temperature compensated methods for detection of leaks in pressurized pipeline systems using piston displacement apparatus
US5375455A (en) * 1990-08-30 1994-12-27 Vista Research, Inc. Methods for measuring flow rates to detect leaks
JPH05340836A (en) * 1992-06-08 1993-12-24 Fukuda:Kk Fluid sucking and discharging device
US5948969A (en) * 1997-10-20 1999-09-07 Vista Research, Inc. Methods for measuring the flow rate due to a leak in a pressurized pipe system
KR100888865B1 (en) 2007-10-11 2009-03-17 (주)삼우기계 Hydraulic driven water pump

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