Title:
負圧波発生装置
Document Type and Number:
Japanese Patent JP6847676
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a negative pressure wave generator capable of generating a large negative pressure wave by enlarging an aperture area between a vacuum chamber aperture and a valve body and sufficiently reducing a tunnel micro atmospheric pressure wave.SOLUTION: A negative pressure wave generator 1 for cancelling out a tunnel micro atmospheric pressure wave W2 which is a positive pulse wave with a negative pressure wave W3 which is a negative pulse wave by using the negative pressure wave W3 generated in pulses to cause interference with the tunnel micro atmospheric pressure wave W2 projected as a pulse towards the outside from an exit 102 of a tunnel 100 comprises: a vacuum chamber 11 capable of maintaining a vacuum inside, a plurality of apertures 11a opened in the vacuum container 11, and a plurality of valve bodies 13 within the vacuum chamber 11 which respectively open and close the plurality of apertures 11a.SELECTED DRAWING: Figure 2
Inventors:
Yoshiko Takei
Toshifumi Kudo
Kenta Yamamoto
Nobuyuki Kimura
Takashi Goto
Tatsuya Yamamoto
Toshifumi Kudo
Kenta Yamamoto
Nobuyuki Kimura
Takashi Goto
Tatsuya Yamamoto
Application Number:
JP2017007014A
Publication Date:
March 24, 2021
Filing Date:
January 18, 2017
Export Citation:
Assignee:
Mitsubishi Heavy Industries Machinery Systems Co., Ltd.
East Japan Railway Company
East Japan Railway Company
International Classes:
E01F8/00; E21F17/00
Domestic Patent References:
| JP7017899U | ||||
| JP5209404A | ||||
| JP5209405A | ||||
| JP4182502A |
Foreign References:
| WO2009057852A1 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata