METHOD OF INERT MEDIUM FORMATION IN MINE WORKINGS

摘要

FIELD: fire fighting, making insert and cleaning of atmospheric in blind gassy and dusty mine workings. SUBSTANCE: method includes preliminarily conversion of cryogenic fluid in heat exchanger into vapor-liquid state. Then one part of mixture is evaporated in evaporator and supplied in the form of gas to special labyrinth of cyclone swirler to swirl it, and aerosol of its other vapor-liquid part is injected from header to swirling mass. At the same time, cooled water is dispersed into finely divided vapor-drop mist with the help of gas flow from pipe and capillary-perforated head. Formed finely divided suspension is introduced into zone of low pressure of swirl flow where suspended particles are instantly frozen to form snow crystals. EFFECT: increased labor safety in mine workings, reduced material and labor expenditures in performance of mine rescue operations. 2 cl, 1 dwg