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SE9403781L - Method and apparatus for testing the density of a container - Google Patents

Method and apparatus for testing the density of a container

Info

Publication number
SE9403781L
SE9403781L SE9403781A SE9403781A SE9403781L SE 9403781 L SE9403781 L SE 9403781L SE 9403781 A SE9403781 A SE 9403781A SE 9403781 A SE9403781 A SE 9403781A SE 9403781 L SE9403781 L SE 9403781L
Authority
SE
Sweden
Prior art keywords
container
pressure
testing
limit value
tightness
Prior art date
Application number
SE9403781A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE515496C2 (en
SE9403781D0 (en
Inventor
Bo Harde
Original Assignee
Volvo Ab
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 Volvo Ab filed Critical Volvo Ab
Priority to SE9403781A priority Critical patent/SE515496C2/en
Publication of SE9403781D0 publication Critical patent/SE9403781D0/en
Priority to PCT/SE1994/001104 priority patent/WO1996014561A1/en
Publication of SE9403781L publication Critical patent/SE9403781L/en
Publication of SE515496C2 publication Critical patent/SE515496C2/en

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
    • G01M3/32—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 for containers, e.g. radiators
    • G01M3/3236—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 for containers, e.g. radiators by monitoring the interior space of the containers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention relates to a method for testing the air-tightness of a closed container (3), comprising an evacuation of the container (3), measuring the pressure (p) in the container (3), measuring the time and providing an indication depending on values of the pressure (p), wherein the container (3) can be evacuated during a certain predetermined time period (t0). The method according to the invention is characterized in that it comprises: a first level detection, wherein the current value of the pressure (p) is compared with a first limit value (p2), the evacuation being switched off if the pressure is below said limit value (p2); and a second level detection after said time period (t0) has elapsed, wherein the current value of the pressure (p) is compared with a second limit value (p3), an indication regarding a leakage being provided if the second limit value (p3) has been exceeded. The invention provides a simplified and cheap, but still safe, testing of the air-tightness of closed containers, in particular fuel tanks for motor vehicles. The invention also relates to a device intended for use in the above-mentioned tightness testing of a container.
SE9403781A 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container SE515496C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container
PCT/SE1994/001104 WO1996014561A1 (en) 1994-11-04 1994-11-21 A method and a device for testing the tightness of a closed container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container

Publications (3)

Publication Number Publication Date
SE9403781D0 SE9403781D0 (en) 1994-11-04
SE9403781L true SE9403781L (en) 1996-05-05
SE515496C2 SE515496C2 (en) 2001-08-13

Family

ID=20395849

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403781A SE515496C2 (en) 1994-11-04 1994-11-04 Method and apparatus for testing the density of a sealed container

Country Status (2)

Country Link
SE (1) SE515496C2 (en)
WO (1) WO1996014561A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE507197C2 (en) * 1996-08-26 1998-04-20 Getinge Skaerhamn Ab Method of testing air leakage
FR2846092B1 (en) * 2002-10-18 2004-12-24 Renault Sa METHOD AND DEVICE FOR TESTING THE SEALING OF A MECHANICAL MEMBER
PL2502043T3 (en) 2009-11-20 2018-08-31 Packaging Technologies & Inspection Llc At rest vacuum state for vacuum decay leak testing method and system
IT1398531B1 (en) * 2010-02-25 2013-03-01 Noci DEVICE AND METHOD OF VERIFICATION OF THE VACUUM, PARTICULARLY FOR SEALING TESTS OF COMPONENTS OF REFRIGERATED AND SIMILAR MACHINES PROCESSED ON EMPTY CAROSELS.
CN107105381A (en) * 2017-06-22 2017-08-29 深圳市山海精仪科技有限公司 A kind of audio amplifier air leak test device and detection method
CN111024337A (en) * 2018-10-09 2020-04-17 郑州宇通重工有限公司 High-voltage electrical junction box air tightness detection device and detection method thereof
CN111795786A (en) * 2020-06-15 2020-10-20 黄山旺荣电子有限公司 Relay gas tightness detection device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790732A (en) * 1971-11-02 1973-02-15 Mannesmann Handel Warmedienst VACUOMETRIC LEAK INDICATOR FOR DOUBLE WALL LIQUID TANKS, ESPECIALLY FOR PETROL TANKS
US3800586A (en) * 1972-04-24 1974-04-02 Uson Corp Leak testing apparatus
IT1047349B (en) * 1975-10-07 1980-09-10 Gastaldo R PROCEDURE AND AUTOMATIC DEVICE FOR SEALING CAVITY TEST
US5261379A (en) * 1991-10-07 1993-11-16 Ford Motor Company Evaporative purge monitoring strategy and system
DE4227698C2 (en) * 1992-08-21 1996-08-01 Daimler Benz Ag Method for determining leaks in a motor vehicle tank ventilation system
DE4232148A1 (en) * 1992-09-25 1994-03-31 Bayerische Motoren Werke Ag Method for leak testing a tank system for motor vehicles
US5369984A (en) * 1993-08-31 1994-12-06 Environmental Systems Products, Inc. Method and apparatus for testing of tank integrity of vehicle fuel systems

Also Published As

Publication number Publication date
WO1996014561A1 (en) 1996-05-17
SE515496C2 (en) 2001-08-13
SE9403781D0 (en) 1994-11-04

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Legal Events

Date Code Title Description
NUG Patent has lapsed