GB1309574A - Device for detecting helium leaks - Google Patents

Device for detecting helium leaks

Info

Publication number
GB1309574A
GB1309574A GB4270870A GB4270870A GB1309574A GB 1309574 A GB1309574 A GB 1309574A GB 4270870 A GB4270870 A GB 4270870A GB 4270870 A GB4270870 A GB 4270870A GB 1309574 A GB1309574 A GB 1309574A
Authority
GB
United Kingdom
Prior art keywords
detector
tube
circuit
spectrograph
pumping system
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
GB4270870A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1309574A publication Critical patent/GB1309574A/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
    • 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
    • G01M3/205—Accessories or associated equipment; Pump constructions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

1309574 Leak detectors COMMISSARIAT A L'ENERGIE ATOMIQUE 7 Sept 1970 [19 Sept 1969] 42708/70 Heading G1S A device for detecting helium leaks through a wall comprises a detector 1 adjusted to helium, a pumping system for said detector, a vacuum circuit including said pumping system, absorbent means for selectively retaining gases and preferentially passing helium connected in said circuit upstream of said pumping system in close proximity to said detector, said means including a tube 2 containing activated charcoal and including means 3 for adjusting the temperature of the charcoal. The detector 1 is preferably a mass spectrograph, and the U-shaped tube 2 preferably contains granulated coconut charcoal. The means 3 is a Dewar flask containing liquid nitrogen at a temperature of 77‹K and the tube 2 is connected to the detector 1 by a spigot 6. A probe 4, described in detail Fig. 3 (not shown) is connected to the tube 2 by a rubber pipe 5. The vacuum circuit may be the pumping circuit of the spectrograph or an additional circuit connected to the spigot 6 in parallel with the spectrograph. In a modified arrangement Fig. 2 (not shown) two tubes 2 are connected in parallel to the detector through individual valves thus enabling one tube to be regenerated by removing the Dewar flask while the other tube is in operation.
GB4270870A 1969-09-19 1970-09-07 Device for detecting helium leaks Expired GB1309574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6932069A FR2058661A5 (en) 1969-09-19 1969-09-19

Publications (1)

Publication Number Publication Date
GB1309574A true GB1309574A (en) 1973-03-14

Family

ID=9040350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4270870A Expired GB1309574A (en) 1969-09-19 1970-09-07 Device for detecting helium leaks

Country Status (3)

Country Link
DE (1) DE2046264A1 (en)
FR (1) FR2058661A5 (en)
GB (1) GB1309574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133340A (en) * 1983-08-06 1985-07-16 Japan Atom Energy Res Inst Leakage detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56126733A (en) * 1980-03-10 1981-10-05 Nippon Sanso Kk Detecting method for leakage of helium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60133340A (en) * 1983-08-06 1985-07-16 Japan Atom Energy Res Inst Leakage detector
JPH0159531B2 (en) * 1983-08-06 1989-12-18 Japan Atomic Energy Res Inst

Also Published As

Publication number Publication date
DE2046264A1 (en) 1971-03-25
FR2058661A5 (en) 1971-05-28

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee