Steam-water separation unit for steam-water separation reheater

Abstract

The invention aims to discloses a steam-water separation unit for a steam-water separation reheater, which comprises at least two Y-shaped symmetrically-arranged separation assemblies. Each separationassembly is composed of a frame assembly and a corrugated plate assembly, the corrugated plate assemblies are arranged in the frame assemblies, the frame assembly comprises a top support, an inlet air homogenizing pore plate, a bottom support and a drain tank, and the drain tank is arranged at the lower part of the bottom support. Compared with the prior art, the separation assembly is arranged in a Y-shaped structure, so that more separation areas can be arranged in an effective space of the steam-water separation reheater (MSR), the steam-water separation capacity of the steam-water separation reheater (MSR) is improved, the corrugated plate is pressed by the side edges, the pressing effect is guaranteed, the steam circulation space is saved, the corrugated plate is made of a stainlesssteel material, corrosion products in a loop are effectively reduced, the service life is prolonged, the separation efficiency is high, the pressure drop resistance is low, the comprehensive performance is excellent, and the purpose is achieved.

Description

Technical field[0001]The invention relates to a steam-water separation unit, in particular to a steam-water separation unit of a conventional island steam-water separation reheater in a pressurized water reactor nuclear power plant.Background technique[0002]In pressurized water reactor nuclear power plants, after saturated steam expands in the steam turbine to perform work, the steam pressure and temperature gradually decrease. When leaving the high-pressure cylinder, the steam humidity reaches about 20%. If no measures are taken, it is directly sent to the low-pressure cylinder for work. Steam will cause severe erosion to the final stage blades of the low-pressure cylinder of the steam turbine, greatly reducing the cycle thermal efficiency of the low-pressure cylinder, seriously shortening the life of the steam turbine, and increasing moisture loss. In order to improve the working conditions of the low pressure cylinders, a steam-water separator reheater (MSR) is installed between ...

AI Technical Summary

Problems solved by technology

If the structural design of the separation unit is unreasonable, it will lead to a decrease in the steam-water separation efficiency or an increase in the pressure drop, which will directly affect the overall efficiency of the steam-water separation reheater (MSR) and the life safety of the steam turbine.

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