IE31862L - Testing the fluid tightness of containers - Google Patents
Testing the fluid tightness of containersInfo
- 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
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]
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)
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 |
-
1967
- 1967-04-18 GB GB1785167A patent/GB1173376A/en not_active Expired
-
1968
- 1968-04-04 SE SE448668A patent/SE355075B/xx unknown
- 1968-04-05 IE IE39468A patent/IE31862B1/en unknown
- 1968-04-06 DE DE19681773148 patent/DE1773148B2/en not_active Ceased
- 1968-04-11 AT AT360068A patent/AT300413B/en not_active IP Right Cessation
- 1968-04-11 CH CH545468A patent/CH492971A/en not_active IP Right Cessation
- 1968-04-16 FR FR1560129D patent/FR1560129A/fr not_active Expired
- 1968-04-16 LU LU55900D patent/LU55900A1/xx unknown
- 1968-04-17 NL NL6805376A patent/NL6805376A/xx unknown
- 1968-04-18 BE BE713849D patent/BE713849A/xx unknown
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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