IE31862L - Testing the fluid tightness of containers - Google Patents

Testing the fluid tightness of containers

Info

Publication number
IE31862L
IE31862L IE39468A IE39468A IE31862L IE 31862 L IE31862 L IE 31862L IE 39468 A IE39468 A IE 39468A IE 39468 A IE39468 A IE 39468A IE 31862 L IE31862 L IE 31862L
Authority
IE
Ireland
Prior art keywords
valves
thermistor
valve
thermistors
pressure
Prior art date
Application number
IE39468A
Other versions
IE31862B1 (en
Original Assignee
Cosmopolitan Assurance
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 Cosmopolitan Assurance filed Critical Cosmopolitan Assurance
Publication of IE31862L publication Critical patent/IE31862L/en
Publication of IE31862B1 publication Critical patent/IE31862B1/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
    • G01M3/3254—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 using a flow detector
    • 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
    • G01M3/002—Investigating fluid-tightness of structures by using thermal means

Landscapes

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

Abstract

1,173,376. Apparatus for pressure testing containers. COSMOPOLITAN ASSURANCE CO. Ltd and P.G. DAVEY. April 9, 1968 [April 18, 1967], No. 17851/67. Heading G1S. Apparatus for testing a container 9 comprises an air compressor 1, a regulator 2, a flow detector 3 containing a thermistor, and a valve 8 connected to a terminal port 4. Valves 7 and 12 are connected in a conduit 6 by passing the flow detector 3 and valve 8, and a valve 10 may be vented to atmosphere. An automatic switch 14 operated by a differential pressure device 15-19 controls valves 7 and 8, and a manual switch 13 operates valves 10 and 12, these pairs of valves being operated alternately by their respective switches so that when say valve 7 is open valve 8 is shut and vice versa. Air-pressure greater than the test pressure is supplied by a second regulator 26' which supplies both the switches, these switches comprising two way valves which selectively apply greater than test pressure to the valves 7, 8 and the valves 10, 12. In Fig.2 the flow detector 3 comprises a chamber 20 with inlet and outlet conduits and thermistors 23, 24, the thermistor 24 being used as reference and being located out of the path of airflow through the chamber so that the thermistor 23 is cooled preferentially and the differential change in the resistances of the thermistors 23 and 24 is used to provide an indication of the flow. In Fig. 3, and Fig.4 (not shown) three thermistors are used and located as shown, the thermistor 30 being a heating element which when air is flowing transfers more heat to the downstream thermistor than to the upstream thermistor, the differential change in resistance being used to indicate flow and being measured by bridge circuits as in Figs.5, 6 (not shown). [GB1173376A]
IE39468A 1967-04-18 1968-04-05 Apparatus for testing the fluid tightness of containers IE31862B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1785167A GB1173376A (en) 1967-04-18 1967-04-18 Apparatus for testing the fluid tightness of containers

Publications (2)

Publication Number Publication Date
IE31862L true IE31862L (en) 1968-10-18
IE31862B1 IE31862B1 (en) 1973-01-24

Family

ID=10102339

Family Applications (1)

Application Number Title Priority Date Filing Date
IE39468A IE31862B1 (en) 1967-04-18 1968-04-05 Apparatus for testing the fluid tightness of containers

Country Status (10)

Country Link
AT (1) AT300413B (en)
BE (1) BE713849A (en)
CH (1) CH492971A (en)
DE (1) DE1773148B2 (en)
FR (1) FR1560129A (en)
GB (1) GB1173376A (en)
IE (1) IE31862B1 (en)
LU (1) LU55900A1 (en)
NL (1) NL6805376A (en)
SE (1) SE355075B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1047349B (en) * 1975-10-07 1980-09-10 Gastaldo R PROCEDURE AND AUTOMATIC DEVICE FOR SEALING CAVITY TEST
DE3029905A1 (en) * 1980-08-07 1982-03-11 Stumpp + Kurz Gmbh + Co, 7000 Stuttgart High sensitivity hand-held leak testing device - has temp. dependent resistor sensing element in plug-in unit
DE3038926A1 (en) * 1980-10-15 1982-05-27 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Leak tester appts. more accurate safer than conventional - has pressure source reservoirs connected via shut-off valves
US4532795A (en) * 1984-04-23 1985-08-06 Semyon Brayman Method of temperature compensating leak rate testing
SE450165B (en) * 1985-10-23 1987-06-09 Asea Stal Ab PFBC Combustion Plant with a Cyclone Monitoring Device
FR2711240B1 (en) * 1993-10-12 1995-12-15 Cerga Device for detecting a small pressure imbalance between two volumes of air.
DE4418396A1 (en) * 1994-04-20 1995-10-26 Otto Muggenthaler Flow duration monitoring device for domestic water supply

Also Published As

Publication number Publication date
NL6805376A (en) 1968-10-21
LU55900A1 (en) 1968-11-27
DE1773148A1 (en) 1971-09-02
GB1173376A (en) 1969-12-10
SE355075B (en) 1973-04-02
FR1560129A (en) 1969-03-14
CH492971A (en) 1970-06-30
AT300413B (en) 1972-07-25
BE713849A (en) 1968-09-16
IE31862B1 (en) 1973-01-24
DE1773148B2 (en) 1978-06-15

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