| 摘要 |
FIELD: fire prevention facilities.SUBSTANCE: invention refers to fire-fighting equipment, and can be used in high fire risk industrial and civil buildings for fire source localisation. In an acoustic foaming system, an acoustic oscillation generator represents a conical nozzle coaxial with a body, and having a ring orifice. An external diameter of the orifice is formed by a nozzle exit and a resonant pin, and a ring resonant cavity formed by the resonant pin and a cylindrical cavity with an external diameter in a fastener. The resonant cavity is spaced from the nozzle exit. An air pipe is perpendicular to a body axis and connected to a ring cavity formed by a cylinder and an internal surface of the body. The cylinder comprises a casing with orifices coaxial with the ring orifices. The cylinder also accommodates the resonant pin. The sprayed fluid is supplied through a pipe perpendicular to the body axis to the ring cavity formed by a housing and an external surface of the nozzle. One end face of the housing is uniform and connected to the body. Another end face enclosing the conical nozzle comprises a number of orifices coaxial with the ring orifice. From the side opposite the resonant cavity, there is an adjustment mechanism in the form of a hand wheel with a packer mounted on a free end of the cylinder. A foaming mesh mouth is attached to an end opposite to the hand wheel on the end face of the housing.EFFECT: more effective fire extinguishment ensured by implementing the acoustic sprayer.1 dwg |
