Control method of heat dissipation system of high-capacity generator set

Abstract

The invention discloses a control method of a heat dissipation system of a high-capacity generator set. The method comprises the following steps: when a rotating wheel drives a rotor to rotate to generate electricity, a rotating shaft on the rotor driving centrifugal fan blades to rotate, so that cold air at the air inlet end is sucked in, flows out in the radial direction through vent holes in amagnet yoke, is sprayed to a stator to absorb heat to become hot air, and is exhausted outwards through the air outlet end; detecting a temperature difference delta T between the air outlet end and the air inlet end, and comparing the temperature difference -T with a set temperature difference delta T; when -T is less than or equal to 0.95[delta]T, reducing the friction force between the rotatingshaft and the centrifugal fan blades to reduce rotating speed of the centrifugal fan blades, and when -T is larger than or equal to 1.05 [delta T, increasing the friction force between the rotating shaft and the centrifugal fan blades to increase the rotating speed of the centrifugal fan blades, and when -T is larger than or equal to 0.95 [delta]T and smaller than 1.05 [delta]T, keeping the friction force unchanged. Ventilation loss can be remarkably reduced, the heat dissipation and cooling efficiency is improved, uniform heat dissipation of the generator set is ensured, and the complex structure of a heat dissipation system is avoided.

Description

technical field [0001] The invention relates to the technical field of hydroelectric generators, in particular to a control method for a heat dissipation system of a large-capacity generating set. Background technique [0002] With the enhancement of people's awareness of energy conservation and environmental protection, hydropower as a green energy is being vigorously developed. In the field of hydropower, the water turbine is a key part, which usually includes a stator, a rotor rotatably arranged in the stator, and a rotor for driving the rotor. Rotating runner, wherein the runner is set in a volute, and the volute is set in the machine pit. The runner includes several blades. One side is provided with a water inlet pipe with an opening aligned with the water-facing surface of the blade, and the other side of the volute is provided with a water outlet pipe. The rotor includes a rotor shaft connected to the rotor drive, a rotor yoke connected to the rotor shaft through a r...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a control method for the heat dissipation system of a large-capacity generating set in order to solve the problems of large ventilation loss, low efficiency, and uneven temperature in the existing water turbine generator heat dissipation system. Reduce ventilation loss, improve heat dissipation and cooling efficiency, ensure uniform heat dissipation of the generator set, and avoid complex structure of the heat dissipation system

Images