Flow guide structure and flow guide method for condenser

Abstract

The invention discloses a flow guide structure and a flow guide method for a condenser, and belongs to the technical field of steam turbine condenser devices for thermal power generation. The structure comprises a shell, a condenser throat part is arranged on the upper portion of the shell, and the condenser throat part is communicated with a low-pressure cylinder steam exhaust port. The shell is provided with a cooling liquid inlet and a cooling liquid outlet, a heat exchange pipe is arranged in the shell, and the heat exchange pipe is communicated with the cooling liquid inlet and the cooling liquid outlet to form a liquid passage for cooling liquid circulation; according to the flow guide structure for the condenser and the flow guide method, the problem that the traditional flow guide effect is poor is solved, especially the problem that a large amount of steam transversely flows in the shell in actual operation based on a traditional structure, and then larger steam resistance is caused is solved; and by means of the design of the flow guide plates and the partition plates, the cooling effect can be effectively better, the heat utilization efficiency is higher, and the efficient cooling effect is achieved.

Description

technical field [0001] The invention relates to a diversion structure and a diversion method for a condenser, belonging to the technical field of steam turbine condenser devices for thermal power generation. Background technique [0002] The condenser is the most important equipment in the cold end system of the steam turbine, and its performance directly affects the output of the unit and the energy consumption level of the unit. A condenser usually consists of a throat, and a shell below the throat. The exhaust steam of the steam turbine enters the shell through the expansion of the throat, and exchanges heat with the circulating water in the heat exchange tube to form a vacuum; therefore, the heat transfer coefficient of the condenser is improved, the performance of the condenser is improved, and the back pressure of the unit operation is reduced. Especially important in the design of the condenser. [0003] The vapor resistance on the shell side of the condenser is an ...

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Problems solved by technology

[0005] 1. This type of research basically focuses on the analysis of the throat of the condenser, ignoring the internal structure and flow field of the condenser shell, and the analysis is relatively one-sided

[0006] 2. Through research and analysis, during the condensation process inside the condenser shell, due to the different temperature of the condensed water, the heat exchange capacity of the direction of the heat exchange tube is different, and the amount of condensed steam is also different; if according to the flow field on the bottom section of the throat Evenly distributed deflectors will cause a larger amount of steam to flow laterally inside the shell in actual operation, which will cause greater steam resistance problems

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