GB1213813A - Improvements relating to the detection of leaky seals - Google Patents

Improvements relating to the detection of leaky seals

Info

Publication number
GB1213813A
GB1213813A GB4115067A GB4115067A GB1213813A GB 1213813 A GB1213813 A GB 1213813A GB 4115067 A GB4115067 A GB 4115067A GB 4115067 A GB4115067 A GB 4115067A GB 1213813 A GB1213813 A GB 1213813A
Authority
GB
United Kingdom
Prior art keywords
seal
chamber
gas
withdrawal
feb
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
GB4115067A
Inventor
Roger Neil Dawson
Keith Brewer
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB1213813A publication Critical patent/GB1213813A/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
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

1,213,813. Testing a seal. PLESSEY CO. Ltd. Feb.9, 1968 [Feb. 10, 1967; Sept. 8, 1967], Nos. 6608/67 and 41150/67. Heading G1A. A seal is tested by applying a radio-active fluid under pressure to one side of it and monitoring for radio-activity arising from a leak on the other. A gas such as Krypton 85 may be used and it may be mixed with carbon dioxide, a geiger counter or a photo-multiplier and scintillation counter being used for monitoring. In one arrangement gas from a chamber is admitted into a cylinder having the seal in its end wall by withdrawal of a piston and returned to the chamber by the return of the piston after a predetermined time. In an alternative arrangement the gas mixture is held solid by liquid nitrogen and is allowed to sublimate or vaporize by withdrawal of the nitrogen and a chamber on the other side of the seal is monitored for radioactivity by pumping its contents past a geiger counter.
GB4115067A 1967-02-10 1967-02-10 Improvements relating to the detection of leaky seals Expired GB1213813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB660867 1967-02-10

Publications (1)

Publication Number Publication Date
GB1213813A true GB1213813A (en) 1970-11-25

Family

ID=9817568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4115067A Expired GB1213813A (en) 1967-02-10 1967-02-10 Improvements relating to the detection of leaky seals

Country Status (1)

Country Link
GB (1) GB1213813A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574619A (en) * 1983-10-05 1986-03-11 Societe Nationale d'Etude et de Construction de Meteurs d'Aviation Method for determining the flow rate of air through a turbine-engine labyrinth seal
CN112113147A (en) * 2020-09-07 2020-12-22 孙永林 Gas leakage detection ring capable of automatically changing light from convex at joint of natural gas pipeline
CN117387851A (en) * 2023-12-13 2024-01-12 山东菲特自控阀门制造有限公司 Quality detection equipment for gate valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574619A (en) * 1983-10-05 1986-03-11 Societe Nationale d'Etude et de Construction de Meteurs d'Aviation Method for determining the flow rate of air through a turbine-engine labyrinth seal
CN112113147A (en) * 2020-09-07 2020-12-22 孙永林 Gas leakage detection ring capable of automatically changing light from convex at joint of natural gas pipeline
CN117387851A (en) * 2023-12-13 2024-01-12 山东菲特自控阀门制造有限公司 Quality detection equipment for gate valve
CN117387851B (en) * 2023-12-13 2024-02-23 山东菲特自控阀门制造有限公司 Quality detection equipment for gate valve

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees