GB1402897A - Method for detecting leaks in tubes - Google Patents

Method for detecting leaks in tubes

Info

Publication number
GB1402897A
GB1402897A GB4043372A GB4043372A GB1402897A GB 1402897 A GB1402897 A GB 1402897A GB 4043372 A GB4043372 A GB 4043372A GB 4043372 A GB4043372 A GB 4043372A GB 1402897 A GB1402897 A GB 1402897A
Authority
GB
United Kingdom
Prior art keywords
condenser
ultrasonic
generators
aug
enclosure
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
GB4043372A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1402897A publication Critical patent/GB1402897A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • 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
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/048—Transmission, i.e. analysed material between transmitter and receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/105—Number of transducers two or more emitters, two or more receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2634—Surfaces cylindrical from outside
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2693—Rotor or turbine parts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

1402897 Ultrasonic leak detecting G A HARRIS 31 Aug 1972 [31 Aug 1971] 40433/72 Heading H4D A method of fault finding in hollow tubes extending through an enclosure in a condenser, comprises generating ultrasonic energy in the enclosure and scanning the open tube ends with an ultrasonic detector. In testing the condenser of a stream turbine, ultrasonic generator 18 situated above, between and to the sides of the banks of condenser tubes 11 are energized. The inlet and outlet chambers 12, 13 for the cooling fluid are emptied and operators 20 scan the open tube ends using a microphone and detector 19. Any tube which yields a high sound intensity is flawed and is subsequently sealed by a cork to enable testing to continue. Higher intensity ultrasonic energy is used to vibrate weak spots in the condenser enabling detection thereof. The generators 18 comprise piezoelectric transducers and transistor oscillators mounted inside wire mesh boxes provided with electric power supply cables (Figs. 4-5, not shown). Instead of fixed generators 18, portable generators may be used.
GB4043372A 1971-08-31 1972-08-31 Method for detecting leaks in tubes Expired GB1402897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17647971A 1971-08-31 1971-08-31

Publications (1)

Publication Number Publication Date
GB1402897A true GB1402897A (en) 1975-08-13

Family

ID=22644517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4043372A Expired GB1402897A (en) 1971-08-31 1972-08-31 Method for detecting leaks in tubes

Country Status (4)

Country Link
JP (1) JPS4835206A (en)
DE (1) DE2242932A1 (en)
GB (1) GB1402897A (en)
NO (1) NO138348C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5089997A (en) * 1990-11-02 1992-02-18 Pasar, Inc. Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
CN114894393A (en) * 2022-03-28 2022-08-12 上海化工研究院有限公司 Portable high-pressure hydrogen leakage ultrasonic detector

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442962C2 (en) * 1973-10-19 1986-06-26 Hauni-Werke Körber & Co KG, 2050 Hamburg Method and device for checking cigarettes or other rod-shaped articles in the tobacco processing industry for defective wrappings
DE2553789C2 (en) * 1975-11-29 1985-08-29 Hochtemperatur-Reaktorbau GmbH, 4600 Dortmund Device for the detection and localization of leaks in a pipeline through which a hot fluid flows
DE2854238C2 (en) * 1978-12-15 1982-04-08 Bayerische Motoren Werke AG, 8000 München Method for determining the tightness and sound insulation of seals between components that define a space

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055209A (en) * 1959-11-18 1962-09-25 American Gas Ass Method for locating leaks in underground gas conduits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5089997A (en) * 1990-11-02 1992-02-18 Pasar, Inc. Ultrasonic energy detector with frequency and amplitude indications and background noise reduction
CN114894393A (en) * 2022-03-28 2022-08-12 上海化工研究院有限公司 Portable high-pressure hydrogen leakage ultrasonic detector
CN114894393B (en) * 2022-03-28 2024-05-03 上海化工研究院有限公司 Portable high-pressure hydrogen leakage ultrasonic detector

Also Published As

Publication number Publication date
NO138348C (en) 1978-08-16
DE2242932A1 (en) 1973-03-15
JPS4835206A (en) 1973-05-24
NO138348B (en) 1978-05-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee