FIELD: mining.
SUBSTANCE: device includes casing with located in it fuel element with through channels along the axis filled with oxidising agent. On the surface of fuel element end part, from the side of firing device, there is a disc with diameter exceeding casing internal diameter by 0.5-1.0 mm. Disc is made of material resistant to thermal-oxidative ageing.
EFFECT: increase of operation reliability and stability.
2 cl, 1 dwg
