Pressure maintenance device with automatic switchover for use in a fire protection sprinkler system, and a related method

    公开(公告)号:US11013942B2

    公开(公告)日:2021-05-25

    申请号:US16142967

    申请日:2018-09-26

    Abstract: A pressure maintenance device is connected to a fire protection sprinkler system having downstream piping that is exposed to freezing temperatures, and supplies a pressurized fluid to the downstream piping when the sprinkler system is in an inactivated state. When an outlet pressure sensor near an outlet of the pressure maintenance device detects that a pressure of the pressurized fluid downstream of an outlet regulator falls below a first predetermined pressure, the pressure maintenance device supplies the pressurized fluid in a primary supply mode or a secondary supply mode. The pressure maintenance device automatically switches from the primary supply mode to the secondary supply mode if a supply pressure sensor detects that a pressure of the pressurized fluid downstream of a first pressurized fluid valve, and upstream of the outlet pressure regulator, falls below a second predetermined pressure.

    In-rack fire protection sprinkler system

    公开(公告)号:US10369391B2

    公开(公告)日:2019-08-06

    申请号:US15446722

    申请日:2017-03-01

    Abstract: A method of protecting commodities stored in a plurality of adjoining racks, having a vertical flue space provided between a set of racks of the plurality of adjoining racks, includes covering a rack, of the plurality of adjoining racks, and the vertical flue space with one or more solid horizontal barriers provided at a predetermined height. Each solid horizontal barrier has a width that is at least equal to a width of the rack and a depth that is at least equal to a sum of a depth of the rack and a depth of the vertical flue space. The method also includes providing one or more rack-level fire protection sprinklers in the vertical flue space below a solid horizontal barrier, of the one or more solid horizontal barriers, each rack-level sprinkler being vertically spaced from the commodities stored on the rack that is covered by the solid horizontal barrier.

    THERMAL CIRCULATING FIRE PREVENTION SPRINKLER SYSTEM
    34.
    发明申请
    THERMAL CIRCULATING FIRE PREVENTION SPRINKLER SYSTEM 审中-公开
    热循环防火喷雾系统

    公开(公告)号:US20140352986A1

    公开(公告)日:2014-12-04

    申请号:US14360281

    申请日:2012-11-23

    CPC classification number: A62C35/68 A62C35/60 F16L53/32 F28F1/00

    Abstract: A fire prevention sprinkler system that has a warming jacket through which a warming medium, preferably water, is circulated, at a temperature sufficient to prevent freezing of those portions of the sprinkler system that contain water or another freezable liquid at times when the sprinklers are not actually spraying water to control or extinguish a fire. The warming medium is preferably heated by radiant heating, and circulation is preferably initiated by a thermostatic control whenever the temperature in the protected premises drops below a predetermined value.

    Abstract translation: 一种防火喷水灭火系统,其具有加温护套,加温介质,优选水循环,其温度足以防止在喷洒器不是时具有含水或其它可冷冻液体的喷洒系统的那些部分冻结 实际上喷水控制或扑灭火。 加热介质优选通过辐射加热来加热,并且每当受保护房屋的温度低于预定值时,优选通过恒温控制来启动循环。

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