SU72523A1 - Device for regenerative feedwater heating - Google Patents

Description

The proposed device is intended to increase the efficiency of turbine installations by regenerative heating of feed water with several stages of steam extraction from a steam turbine.

The drawing shows a schematic diagram of the proposed device.

From the selection /// the steam enters the heater /, from the selection // part of the steam is directed to the heater 2, and another part of the steam goes to the jet device 5. The selection steam is sent to the high pressure heater 4 and partially to the jet device 5, which he compresses the selection steam //.

The intermediate pressure steam thus obtained enters the intermediate preheater, which is installed along the feedwater flow between the aerator 6 and the high pressure preheater 4.

In the intermediate heater, the feed water is heated to a certain temperature, the average between the temperatures of the water before the high pressure enters the heater 4 and after it leaves it.

Thus, in the feedwater heating, the fraction of the extraction steam // increases due to a decrease in the amount of extraction steam /, which gives additional power generation without additional heat consumption.

Subject invention

A device for regenerative heating of feed water with several stages of steam extraction from a steam turbine, feature # 72523-2 -

This is so that, in order to reduce the amount of steam at the highest pressure level by increasing the amount of steam at the next lower pressure stage, a preheater, intermediate between these stages, is applied, the steam to which is supplied from the bottom stage selection, the working environment in which is part of the steam selection of the highest stage.