FR2276489A1 - Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels - Google Patents

Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels

Info

Publication number
FR2276489A1
FR2276489A1 FR7423210A FR7423210A FR2276489A1 FR 2276489 A1 FR2276489 A1 FR 2276489A1 FR 7423210 A FR7423210 A FR 7423210A FR 7423210 A FR7423210 A FR 7423210A FR 2276489 A1 FR2276489 A1 FR 2276489A1
Authority
FR
France
Prior art keywords
ventilation system
arch
space under
horizontally along
direct flow
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.)
Granted
Application number
FR7423210A
Other languages
English (en)
French (fr)
Other versions
FR2276489B3 (esLanguage
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.)
Neu SA
Original Assignee
Neu SA
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 Neu SA filed Critical Neu SA
Priority to FR7423210A priority Critical patent/FR2276489A1/fr
Publication of FR2276489A1 publication Critical patent/FR2276489A1/fr
Application granted granted Critical
Publication of FR2276489B3 publication Critical patent/FR2276489B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/04—Air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/10—Other installations, without moving parts, for influencing fuel/air ratio, e.g. electrical means
    • F02M7/106—Fluid amplifier as a device for influencing the fuel-air mixture

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
FR7423210A 1974-06-28 1974-06-28 Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels Granted FR2276489A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7423210A FR2276489A1 (fr) 1974-06-28 1974-06-28 Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7423210A FR2276489A1 (fr) 1974-06-28 1974-06-28 Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels

Publications (2)

Publication Number Publication Date
FR2276489A1 true FR2276489A1 (fr) 1976-01-23
FR2276489B3 FR2276489B3 (esLanguage) 1977-05-06

Family

ID=9140856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7423210A Granted FR2276489A1 (fr) 1974-06-28 1974-06-28 Perfectionnement aux ventilateurs accelerateurs pour la ventilation longitudinale des tunnels

Country Status (1)

Country Link
FR (1) FR2276489A1 (esLanguage)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050684A3 (de) * 1999-05-05 2002-03-27 Witt & Sohn AG Strahlventilator
NO338760B1 (no) * 2014-02-06 2016-10-17 W Giertsen As System og framgangsmåte for ventilasjon av fjellrom, samt en viftekonstruksjon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050684A3 (de) * 1999-05-05 2002-03-27 Witt & Sohn AG Strahlventilator
NO338760B1 (no) * 2014-02-06 2016-10-17 W Giertsen As System og framgangsmåte for ventilasjon av fjellrom, samt en viftekonstruksjon

Also Published As

Publication number Publication date
FR2276489B3 (esLanguage) 1977-05-06

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