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  • The difference between the storage pressure and the external storage pressure
    categories of news:Company news   作者:handler    发布于:2016-12-194    文字:【】【】【

    Gas fire extinguishing system is divided into two types: pipe network and pipe network, there are pipe network, including storage pressure and external storage pressure, today we talk about the difference between storage pressure and external storage pressure.

    First, the transmission distance:

        Under normal circumstances, 2.5mpa pressure level pipeline delivery distance less than or equal to 32m, 4.2mpa pressure level pipeline transmission distance is less than or equal to 55m, 5.6mpa pressure level pipeline transmission distance is less than or equal to 80m. The transmission distance greatly limits the application of the heptafluoropropane fire extinguishing system. The birth of the external storage pressure is a good solution to solve this problem, the system action, fire extinguisher group fire extinguishing agent group by the special inflatable cylinder group according to its stamping and transport of sevoflurane reagent design pressure of 4.2MPa, the maximum transport distance of up to 240m or more.

    Here we look at the parameters of external storage pressure:

        The current national standard stipulates that the filling density of the internal storage pressure of the heptafluoropropane fire extinguishing system is: 2.5MPa system should not be greater than 1120kg / m3 (steel cylinder); 4.2MPa system should not be greater than 950kg / m3 (steel cylinder); 5.6MPa system should not be greater than 1080kg / m3 (steel seamless cylinder). 4.2MPa outside the storage system should not be greater than 1250kg / m3.

    Technical Parameters:

    The main technical parameters of the system

    System implementation criteria

    Q/RXF 1-2014

    Storage pressure (MPa at 20 ° C)

    0.3

    Fire extinguisher bottle volume (L)

    90

    120

    150

    180

    System injection time (s)

    ≤10

    Extinguishing agent maximum filling rate (Kg / m3)

    1250

    System Operating Temperature (° C)

    0~50

    System working pressure (20 ℃) (MPa)

    4.2

    System maximum working pressure (MPa)

    5.3

    temperature(℃)

    pressure Mpa (20 ° C)

    power supply

    set tempreture

    Operating temperature

    Fire extinguisher bottle group

    Nitrogen driven bottle set

    Main electricity

    Standby power

    0~50

    0~50

    0.3

    13.5

    AC

    220v

    DC

    24V

     

    Bottle group name

    Model specifications (L

    Storage pressure(20)

    Nitrogen start bottle set

    8L

    6MPa

    Nitrogen aerodynamic bottle group

    70L

    13.5MPa

    Fire extinguisher bottle group

    90

    120

    150

    180

    0.3MPa

    Finally, due to the increase in the external storage pressure of the nitrogen power bottle group, the delivery of the drug to increase the pressure to push, so the transmission distance is relatively far.

    The above article by the Guangzhou Rong An Fire Protection Equipment Co., Ltd. finishing release.

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