PROBLEM TO BE SOLVED: To provide a negative pressure wave generating device capable of reducing tunnel micro barometric wave while suppressing the generation of audible sound.SOLUTION: A negative pressure wave generating device 1 which causes negative pressure wave W3 generated in pulse shape to interfere with tunnel micro barometric wave W2 radiated in pulse shape from an outlet 102 of a tunnel 100 toward an outer part, thereby, cancels the tunnel micro barometric wave W2 as positive pulse wave with the negative pressure wave W3 as negative pulse wave includes: a vacuum container 11 capable of maintaining an inner part in vacuum state; an opening part 11b which is opened to the vacuum container 11; and a valve body 12 which is supported so as to be openable and closable for the opening part 11b and is opened to the inside of the vacuum container 11 only by a difference between inner and outer pressures of the vacuum container 11.SELECTED DRAWING: Figure 1

    【課題】可聴音の発生を抑制しつつ、トンネル微気圧波を低減することができる負圧波発生装置を提供する。【解決手段】トンネル100の出口102から外部に向けてパルス状に放射されるトンネル微気圧波W2に対して、パルス状に発生させた負圧波W3を干渉させることにより、正のパルス波となるトンネル微気圧波W2を負のパルス波となる負圧波W3によって相殺する負圧波発生装置1であって、内部を真空状態に維持することが可能となる真空容器11と、真空容器11に開口する開口部11bと、開口部11bを開閉可能に支持され、真空容器11の内外圧力差のみによって、当該真空容器11の内側に向けて開く弁体12とを備える。【選択図】図1


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    Title :

    NEGATIVE PRESSURE WAVE GENERATING DEVICE


    Additional title:

    負圧波発生装置


    Contributors:

    Publication date :

    2018-02-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / E21D SHAFTS , Schächte / E21F Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels , SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS



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