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Foam-free-test-system-for-use-with-fire-fighting-vehicles

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Foam free test system for use with fire fighting vehicles

Details

Inventors: Lee, T. Richard; Kudo, Rance T.; McNolty, Jesse L.; Cappillino, Raymond J.;
Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC)
Primary Examiner: Weldon; Kevin
Assistant Examiner:
Attorney, Agent or Firm: Kalmbaugh; David S.

A test system for use in testing Aircraft Rescue Fire Fighting and Structl Pumper vehicles equipped with fire fighting foam distribution systems. The dye piping arrangement for the test system uses a dye concentrate and water mixture which are delivered into the dye water foam free test system through a three way ball valve, a proportioner and eductor. Fluid flow through the eductor generates a vacuum or negative pressure within the eductor. The dye concentrate from a dye storage bottle is then suctioned into the foam distribution system by the negative pressure within the eductor. A needle valve, check valve and a dye solenoid valve are included in the system. The needle valve meters the amount of dye suctioned into the dye water foam distribution system. The check valve prevents any fluids from back flowing into the dye concentrate tank. The normally closed dye solenoid valve is remotely operated by an ON-POWER OFF-OFF three position switch. The switch is turned ON to provide for dye concentrate flow in the system. A digital monitor is also provided for use by the operator to read flow rate in gallons per minute during system operation. The dye concentrates used during testing are environmentally benign and biodegradable.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring first to FIGS.
1A and 1B, there is shown a fluid flow diagram for a foam free test kit/system 10 which may be used to test fire fighting vehicles, shipboard fire fighting systems, aircraft hanger automated sprinkler systems, fire trucks and the like equipped with fire fighting foam distribution systems.
Foam free test kit/system 10 comprises a three way ball valve 12 having a first inlet port A connected by a line 14 to a foam storage tank 16 which is used for the storage of aqueous film forming foam and has a capacity of about 156 gallons.
Three way ball valve 12 also has an inlet port B connected by a line 18 to a water tank inlet pipe 20 and a winterization pipe 21.
Water tank inlet pipe 20 is connected to a water storage tank 19 which is used for water storage.
Similarly, winterization pipe 21 is connected to a winterization system (not illustrated) utilized by the Amertek CF4000L crash fire rescue vehicle which is one of the fire fighting vehicle for U.
S.
Military shore base airfield facilities throughout the world.
At this time it should be noted that the foam free test kit 10 illustrated in FIGS.
1A and 1B is adapted for use with the Amertek CF4000L crash fire rescue vehicle.
The Amertek CF4000L crash fire rescue vehicle has four different nozzle types including a roof turret nozzle rated at 500 GPM; a bumper turret nozzle rated at 250 GPM; a handline nozzle rated at 60 GPM and three undertruck nozzles with the three nozzles being rated at 45 GPM.
The fire pump for the Amertek CF4000L crash fire rescue vehicle has a rating of 900 GPM at 200 PSI.
Water tank capacity for the crash fire rescue vehicle is 1050 gallons.
The outlet port C of three way ball valve 12 is connected by a line 22 to a fluid flow sensor 24 which measures flow rate of aqueous film forming foam through three way ball valve 12 when foam is being provided for fire fighting operations.
Fluid flow sensor 24 also measures water flow rate through three way ball valve 12 when dye from a dye storage tank/bottle 26 is used to test the fire fighting system associated with test kit/system 10

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