FEED SOURCE FOR DELIVERING AQUEOUS LIQUID TO OBJECT AND FIRE-EXTINGUISHING PLANT Russian patent published in 2004 - IPC

FIELD: fire-fighting equipment.

SUBSTANCE: feed source is used for delivering liquid through pipeline system filled with antifreeze so that standby state pressure is maintained inside pipeline system. Connected to pipeline system are container for aqueous liquid, supplementary container filled with antifreeze liquid and means for supplying liquid from container to pipeline system in liquid state when pipeline system pressure falls below standby state pressure by the first value, which provides pipeline system pressure increase up to the first level. Means for supplying liquid comprises main pump unit used as feed source and including main pump with pump drive and supplementary pump unit having supplementary pump with pump drive. Supplementary pump unit maintains standby pressure in pipeline system and supplies antifreeze from supplementary container to pipeline system when pipeline system pressure falls below standby pressure by the second value which results in immediate increase of pipeline system pressure up to the second pressure level exceeding the first pressure level.

EFFECT: possibility of automatic liquid delivery without freezing thereof, increased economy.

15 cl, 1 dwg