This paper gives an introduction on the principle and function of water level controller for low-pressure heater vapor-liquid two-phase fluid in thermal generator set.

In the light of cavitation phenomenon in a condensate pump,the structure of the condensate pump,leakage of low-pressure heater and backwater heating process were checked and analyzed.

The causes of drain blockage existing in drainage system of low-pressure heaters no.

The comparison of 4 schemes indicates that the optimized configuration scheme for LP heater drainage system of 1 000 MW extra supercritical turbine should be as follows: No.

In this paper, the type and mechanism of erosion of condenser and LP heater at steam side and at water side were introduced.

Energy saving in draining of low pressure heaters;

Reason analysis of water chamber shell vibration for a mixed-type low pressure heater and its handling method;

Modification of frequency control for draining system of low pressure heaters of 300 MW turbogenerator set and its benefit analysis;

This paper introduces the major equipment of the polysilicon reducing furnace electrical system,and emphasizes the working prin-ciples of preheating voltage regulator and reducing voltage regulator.