СНИЖЕНИЕ УРОВНЯ НАГРЕВА ГЕНЕРАТОРА Г1000В ПРИ РЕВЕРСИВНОМ ПРИМЕНЕНИИ

Abstract

Tractor domestic generator G1000V was chosen as a mobile power source for heating viscous protective materials during conservation of agricultural machines. Generator drive from tractor PTO with the reverse rotation of the shaft to the left negatively affects the ventilation and cooling of its body, and leads to a decrease in power. Studies of the thermal mode of operation of the generator under a load of 620 W showed that during normal (right) rotation of the fan wheel, the generator housing heats up by 10 °C. The wheel casing heats up to 60 °C during reverse (left) rotation, and the power is reduced by 4%. P The cooling efficiency of the generator with radial blades is practically the same as cooling with forward inclined blades in reverse application. Changes in the configuration and parameters of the impeller with radial blades are made in reverse application to improve the cooling of the G1000V generator housing. Cutting the wheel ribs by 1/3 of the height and the protrusions on the periphery of the flange with the blades bent by 20° to the left made it possible to reduce the generator heating temperature by 13°C. The backward bending of the ends of the radial blades at an angle of 40-45° to the radius of the wheel contributed to a decrease in the temperature of the generator housing by 18°C. The parameters of the rational configuration of the fan wheel for the G1000V generator were obtained as a result of the research. The use of such a wheel provided a 2.8-fold reduction in the thermal load on the generator during reverse use on a mounted conservation unit.