SEALED DEVICE FOR IGNITION OF THERMITE TYPE MIXTURES Russian patent published in 2014 - IPC F23Q7/02 

FIELD: oil and gas industry.

SUBSTANCE: sealed device for ignition of thermite type mixtures consists of a body charged with flashing and igniting compositions and an electric igniter actuated from battery power source. In addition, the device is equipped with a cup with an opening in the bottom, closed from outside with a circle from mesh material letting through the flame force of the igniter, and flashing and igniting compositions are charged without prepressing. The cup fixes them with its bottom, and the body above the cup has two or one sealed opening of a diameter 0.4-0.7 of the inner diameter of the body, through which inside pressure is relieved, which ensures stable combustion of ignition composition. Weigh of flashing composition makes 0.4-1.2 of weight of ignition composition equal to about 1.0-1.5 g, combustion temperature of which is over 2000°C.

EFFECT: invention allows for significant simplification of the manufacturing process and reduction of cost of works, increase of reliability of its operation under the most complicated conditions of ignition and raise of industrial safety during its use.

2 cl, 1 dwg