RAILWAY EXPLOSION PROOF TANK Russian patent published in 2017 - IPC B65D88/00 

FIELD: blasting.

SUBSTANCE: railway explosion proof tank has a boiler made of cylindrical shell and two end bottoms, a hatch, a safety-intake valve, a drain device located in the lower part of the cylindrical shell, a preheating cover located in the bottom part of the boiler, the cylindrical shell of the boiler is provided with shadow protection that located and rigidly secured on the both sides of the hatch, the angle of shadow protection coverage of the boiler cylindrical shell is 150-160°, and the gap between them is made equal to 50-60 mm. The shadow protection is removable, the tank is additionally equipped with explosion proof device configured as an explosion proof valve and containing a valve body, heat insulation and explosive elements, lined cargo gate movably connected to the valve body. The valve body is in the form of a lower cylindrical, middle conical and the upper cylindrical parts. In the lower cylindrical part there is a lined cargo gate closing an opening in the body of protected object, and in the upper cylindrical part of the valve body there is a heat insulation element and a sealing membrane pressed against the valve body by means of a cover pivotally connected to the lever interacting with baffle, and a fastening unit of the explosive element is fixed on the lever by its upper part, and by lower one it is fixed to the upper cylindrical part of the valve body. Fastening unit of the explosive element consists of a wire, a stop bolt, a fork, a lever of the valve cover, a nut, two drums located in the lever fork of the valve cover and in the fork of upper cylindrical part of the valve body. The ends of the wires are inserted into the openings of the drums and then coiled thereon, and a gap (h) between the forks is about (1.5÷3) of the wire diameter, and valve settings are in the following optimal intervals of values: a=D/Dy=1.5÷2.0; b=H/L=1.3÷1.8; c=H/Dy=2.5÷3.0, where Dy is the diameter of the upper cylindrical part of the valve body 3 equal to the maximum size of the openings 1 of the protected object; D- is the diameter of the cylindrical part of the valve body 3 bottom; H - is the height of the valve assembly; L - is maximum dimensions of the valve on the plan, and the swivel connection of the lined cargo gate together with valve body base is in the form of three vertical rods installed in holes provided in the peripheral part of the lined cargo gate body. The lower part of the rods is fixed in the base of the valve body, and in the upper part they are provided with a damping device fixed to the horizontal bulkheads of rods and facing towards the cargo gate.

EFFECT: increased explosion-proofness of the railroad tank when transporting flammable, explosive liquids.

2 cl, 5 dwg