GB1392690A - Leak detector unit - Google Patents

Leak detector unit

Info

Publication number
GB1392690A
GB1392690A GB5762573A GB5762573A GB1392690A GB 1392690 A GB1392690 A GB 1392690A GB 5762573 A GB5762573 A GB 5762573A GB 5762573 A GB5762573 A GB 5762573A GB 1392690 A GB1392690 A GB 1392690A
Authority
GB
United Kingdom
Prior art keywords
workpiece
pressure
regulator
test pressure
switch
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.)
Expired
Application number
GB5762573A
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.)
Cross Co
Original Assignee
Cross Co
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
Priority claimed from US321691A external-priority patent/US3872712A/en
Application filed by Cross Co filed Critical Cross Co
Publication of GB1392690A publication Critical patent/GB1392690A/en
Expired 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
    • 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

Abstract

1392690 Leak testing CROSS CO 12 Dec 1973 [8 Jan 1973] 57625/73 Addition to 1338218 Heading G1S In testing a workpiece 350 for leaks, the workpiece is rapidly pre-filled for a predetermined time and the flow-rate required to maintain a test pressure in the workpiece measured, the prefilling being carried out in first and second stages using pressure sources at a high pressure and at the test pressure respectively, and switching between the first and second stages being carried out automatically by a pressure switch 3 PS. In the apparatus shown, which is a modification of the embodiment of Figs. 1 to 5 (not shown) of the parent Specification, the high pressure source is provided by a regulator 338 and the test pressure source by regulator 341. At the commencement of pre-filling, the workpiece 350 is connected to regulator 338 via line 301, and valves 302, 351 and 356. When a pressure just below the test pressure is attained in the workpiece, pressure switch 3 PS operates and energizes solenoid 4. This causes valves 302 to shift and connect the workpiece to regulator 341. At the end of the predetermined pre-filling time, time switch 2TR (c.f. Figs.1 to 5 (not shown)) operates and shifts valve 351 to connect the workpiece to the flow measuring element 317. The remainder of the operating cycle is as described in the parent Specification.
GB5762573A 1973-01-08 1973-12-12 Leak detector unit Expired GB1392690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321691A US3872712A (en) 1971-11-18 1973-01-08 Dynamic air flow comparator system

Publications (1)

Publication Number Publication Date
GB1392690A true GB1392690A (en) 1975-04-30

Family

ID=23251618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5762573A Expired GB1392690A (en) 1973-01-08 1973-12-12 Leak detector unit

Country Status (7)

Country Link
JP (1) JPS5237799B2 (en)
BR (1) BR7400055D0 (en)
CA (1) CA1010726A (en)
FR (1) FR2213496B1 (en)
GB (1) GB1392690A (en)
IN (1) IN140395B (en)
IT (1) IT1005247B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016063071A1 (en) * 2014-10-24 2016-04-28 Easytesters Limited Leak testing method and apparatus for use with heat exchangers
CN113916464A (en) * 2021-09-30 2022-01-11 广东利元亨智能装备股份有限公司 Method for detecting gas leakage of electric pile, method for detecting external leakage and method for detecting gas tightness of electric pile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT946298B (en) * 1971-11-18 1973-05-21 Cross Co DYNAMIC AIRFLOW COMPARATOR SYSTEM

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016063071A1 (en) * 2014-10-24 2016-04-28 Easytesters Limited Leak testing method and apparatus for use with heat exchangers
GB2547370A (en) * 2014-10-24 2017-08-16 Easytesters Ltd Leak testing method and apparatus for use with heat exchangers
US10458879B2 (en) 2014-10-24 2019-10-29 Proactive Analytics Limited Leak testing method and apparatus for use with heat exchangers
CN113916464A (en) * 2021-09-30 2022-01-11 广东利元亨智能装备股份有限公司 Method for detecting gas leakage of electric pile, method for detecting external leakage and method for detecting gas tightness of electric pile
CN113916464B (en) * 2021-09-30 2023-11-17 广东利元亨智能装备股份有限公司 Pile gas leakage detection method and airtight detection method thereof

Also Published As

Publication number Publication date
BR7400055D0 (en) 1974-08-15
IN140395B (en) 1976-10-30
DE2400637B2 (en) 1977-05-05
JPS5237799B2 (en) 1977-09-24
FR2213496A1 (en) 1974-08-02
JPS49118487A (en) 1974-11-12
DE2400637A1 (en) 1974-07-11
IT1005247B (en) 1976-08-20
FR2213496B1 (en) 1978-10-27
CA1010726A (en) 1977-05-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee