METHOD FOR ASSESSMENT OF EXPLOSION AND FIRE HAZARD OF CHEMICAL CURRENT SOURCES Russian patent published in 2019 - IPC F42B35/00 H01M10/00 G01K17/00 

FIELD: measurement technology.

SUBSTANCE: invention relates to production and testing of chemical elements and can be used for evaluation of their explosion and fire hazard during operation. Cylindrical battery housing is pierced by its diameter by a pointed metal rod with diameter (4÷5) mm in a manometric bomb and measuring dependence of pressure change on time. Length of the pointed metal rod is selected from the ratio L/D≥1.1, and explosive and fire hazard of cylindrical battery is determined from ratios with due allowance for the following parameters: L is the length of the pointed metal rod, m; D is cylindrical battery diameter, m; Q_exp – amount of heat released during explosion of cylindrical battery, J; V is free manometric bomb volume, m³; k is the adiabatic index of the gaseous combustion products of the cylindrical battery; p₁ is the value of peak pressure in the manometric bomb at the moment of cylindrical battery piercing by the pointed metal rod, Pa; p₀ is initial pressure in manometric bomb, Pa; m_TNT – weight of trinitrotoluene, explosion of which is equivalent to explosion of cylindrical battery, kg; q_THT= 4.52 MJ/kg is specific heat of trinitrotoluene explosion; Q_com – amount of heat released during combustion of contents of cylindrical battery, J; p₂ is maximum pressure in manometric bomb, Pa.

EFFECT: invention makes it possible to quantify explosion and fire safety of chemical power elements.

1 cl, 6 dwg