DEVICE FOR INDEPENDENTLY REVEALING POSSIBILITY OF ICE COVERING OF ENTRY DEVICES OF GAS TRANSFER SETS Russian patent published in 2003 - IPC

FIELD: maintenance of gas pumping equipment. SUBSTANCE: invention is aimed at revealing ice covering of entry devices of gas transfer sets. According to invention, indirect-action ice detector is installed in horizontal air channel found at inlet of suction fan. Ice detector includes full water content pickup and ambient temperature pickup. Drop concentrator is placed between inlet part of channel and water content pickup. Drop concentrator consists of heated rod, rod surface temperature pickup and electronic unit which maintains temperature on rod surface equal to plus 2-5 C. Base of rod is secured in upper part of channel, and free end is arranged at level of center of water content pickup sensing element with tilting to its side. Under ice formation conditions, drop concentrator provides accumulation of water on surface of rod and flowing of water to its free end and periodical dropping of water into air flow in form of large drops getting onto water content pickup to which also small drops of water or crystals of ice (snow) found in water flow get continuously. If signal appears than water content exceeds threshold value and ambient air temperature is below, for instance, +5 C, signal ICING is put out and anti-icing system of entry device of gas transfer set is automatically switched on. EFFECT: improved reliability of ice detection. 4 cl, 2 dwg