FR2313092A1 - Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm - Google Patents

Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm

Info

Publication number
FR2313092A1
FR2313092A1 FR7510651A FR7510651A FR2313092A1 FR 2313092 A1 FR2313092 A1 FR 2313092A1 FR 7510651 A FR7510651 A FR 7510651A FR 7510651 A FR7510651 A FR 7510651A FR 2313092 A1 FR2313092 A1 FR 2313092A1
Authority
FR
France
Prior art keywords
enclosed space
triggering alarm
inflammable gases
spark produced
atmosphere sampler
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.)
Withdrawn
Application number
FR7510651A
Other languages
French (fr)
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
Priority to FR7510651A priority Critical patent/FR2313092A1/en
Publication of FR2313092A1 publication Critical patent/FR2313092A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
    • G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The atmosphere in deep mines and similar enclosed spaces is sampled automatically before miners descend. A sampling unit is positioned in each relevant area for detecting gas, and measuring its concentration. Each unit comprises a heating or a sparking element, such as a sparking plug or a carbon arc. Alternatively, a laser beam can be used. This element operates intermittently in an enclosed space, after drawing in an ambient air sample. A controlled explosion may burn out a wire, brust a paper or metal foil diaphragm or operate a stress gauge. This, in turn, may be used to activate safety doors or warning devices.
FR7510651A 1975-04-04 1975-04-04 Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm Withdrawn FR2313092A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7510651A FR2313092A1 (en) 1975-04-04 1975-04-04 Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7510651A FR2313092A1 (en) 1975-04-04 1975-04-04 Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm

Publications (1)

Publication Number Publication Date
FR2313092A1 true FR2313092A1 (en) 1976-12-31

Family

ID=9153554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7510651A Withdrawn FR2313092A1 (en) 1975-04-04 1975-04-04 Mine atmosphere sampler for inflammable gases - has automatic spark produced in enclosed space with explosion triggering alarm

Country Status (1)

Country Link
FR (1) FR2313092A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359959A (en) * 2019-06-19 2019-10-22 中国矿业大学 A kind of coal working face gas bearing capacity and advanced stress rapid assay methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110359959A (en) * 2019-06-19 2019-10-22 中国矿业大学 A kind of coal working face gas bearing capacity and advanced stress rapid assay methods

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Legal Events

Date Code Title Description
ST Notification of lapse