The hydrogen-cooled machines is fundamentally different from the
air-cooled machine in that hydrogen is filled into its ventilating
system which is gas-tight and completely shout off from the outside. The
gas is re-circulated in the machine by means of an internal blower,
transferring the heat in the machine to the cooling water by means of
the gas cooler, then passes again through the internal blower, making
from 30 to 40 re-circulation per minute.
Although the gas-cooled synchronous condenser can
make it possible to have the bearing and all other
parts completely enclosed in the gas housing, the turbine generator
whose shaft pierces through the gas-tight housing to the outside makes
it necessary to provide liquid sealing glands around the shaft so as to
prevent the gas leakage.
A hydrogen-cooled machines makes it possible to increase the generator's
rated output by increasing the hydrogen gas pressure, furthermore,
owing to improvements made on rotor shaft material and on various
components, there has been a gradual increase in maximum practical
rating.
General Description Of Hydrogen Cooling - 1. Introduction
Re: General Description Of Hydrogen Cooling - 1. Introduction
