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Title:
WATER SPRAY SYSTEM FOR TUNNEL
Document Type and Number:
Japanese Patent JP2011182905
Kind Code:
A
Abstract:

To provide a water spray system for a tunnel which is capable of performing advance-notice water discharge by a simple structure of equipment and at a low cost.

A plurality of water spray heads 12 for discharging water are set in respective water discharge sections inside a tunnel, and an automatic valve 30 set in each water discharge section is remote-controlled to be opened to feed pressurized fire-extinguishing water to the water spray head 12 side. The water spray system for a tunnel also includes an advance-notice water discharge head 16 corresponding to each water spray head 12, for discharging a small volume of water as advance-notice water discharge on receiving the pressurized fire-extinguishing water fed based on the opening operation of the automatic valve 30. The water spray head 12 has a delay opening valve 18. When the automatic valve 30 is opened, the advance-notice water discharge from the advance-notice water discharge head 16 is started first, and after the elapse of a prescribed delay time, the delay opening valve 18 is opened to start the main water discharge from the water spray head 12.


Inventors:
NENOKI MASAHIRO
IBARAKI HIROSHI
ISHIDA HIROSHI
IWATA TERUO
Application Number:
JP2010050102A
Publication Date:
September 22, 2011
Filing Date:
March 08, 2010
Export Citation:
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Assignee:
HOCHIKI CO
International Classes:
A62C3/00; A62C35/64; A62C37/00
Domestic Patent References:
JP2002035147A2002-02-05
JP2002355324A2002-12-10
JP2002035147A2002-02-05
Attorney, Agent or Firm:
Susumu Takeuchi



 
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