Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
NEGATIVE PRESSURE WET TYPE PRELIMINARY ACTUATION TYPE SPRINKLER FACILITY
Document Type and Number:
Japanese Patent JP2019146885
Kind Code:
A
Abstract:
To reduce an overload on a vacuum pump, when water which is not fully separated on a steam separator, enters a suction pipe connecting the steam separator and the vacuum pump.SOLUTION: A flow control valve 2 for increasing an air amount, relative to a water amount, when water flows into a suction pipe 112, is installed in the vicinity position of a vacuum pump 111 in a halfway position of the suction pipe 112. The flow control valve 2 comprises: a body part which is formed of a cylinder part and a cover part and in which air flowing into the suction pipe passes; a first piston part which advances by water pressure, and a second piston part which advances by being compressed by movement of the first piston part, the piston parts movably arranged in the cylinder part in the body part; and a coil spring for energizing the first and second piston parts to a retreat movement direction respectively.SELECTED DRAWING: Figure 1

Inventors:
MAKINO TORU
Application Number:
JP2018034567A
Publication Date:
September 05, 2019
Filing Date:
February 28, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NITTAN CO LTD
International Classes:
A62C35/60; F16K11/20; F16K17/30; F16K24/06; F16K51/02
Domestic Patent References:
JP2012245063A2012-12-13
JP2011045557A2011-03-10
JP2010253002A2010-11-11
JPH06213345A1994-08-02
JPH07145872A1995-06-06
Foreign References:
US20050252664A12005-11-17
Attorney, Agent or Firm:
Kazuo Sugiyama
Katsuko Iwata



 
Previous Patent: 遊技機

Next Patent: 高吸水性マット