DEVICE FOR HEATING OF POINT SWITCH Russian patent published in 2013 - IPC E01B7/24 E01B19/00 

FIELD: construction.

SUBSTANCE: device for heating of a point switch comprises a receiver of a thermal tube, the condensation zone of which is placed in soil at the depth exceeding the depth of its freezing in winter period. The thermal tube heater is arranged in the space between sleepers at the level of the ballast layer base and is connected with the condensation zone by means of a system of valves. Some valves are made and adjusted with the possibility to supply working gas of the thermal tube from its heater to the condensation zone at the ambient temperature (>0°C), and the other part of the valves - with the possibility of working gas supply at the ambient temperature (≤0°C) - from the condensation zone of the thermal tube to its heater.

EFFECT: simplified design of a device, increased efficiency and reliability of its operation.

5 cl, 2 dwg