This paper thoroughly analyzes the erosion problems of priming pipe elbows on the duplex LP heater drain pipes in Daya Bay Nuclear Power Plant,eliminates the problems existing in the selection of pipe material,the bending mode of elbows and the welding of pipes,so as to reach a conclusion that,bled steam bypassing is the main reason for pipe erosion-perforation.

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;

Taking 135 MW sets as a practical example,the profitability of flue duct positioned low pressure feed-water heaters is quantitatively analyzed,in consideration of the boilers thermal efficiency,the turbine s output,the increase of the feed-water pump s and induction fan s power consumption,as well as the corresponding investment required.

Heating performance of a jetting-mixing low-pressure heater