Design method of mechanical draft cooling tower of essential service water system in nuclear power plant

Abstract

The invention relates to a design method of a mechanical draft cooling tower of an essential service water system in a nuclear power plant. The design method comprises the following steps: (I) figuring out a cooling water consumption of the cooling tower according to the operation condition of the essential service water system in the nuclear power plant; (II) segmenting an interior space of the cooling tower into a plurality of tower units to obtain cooling water consumptions and heat loads of decomposed tower units; (III) based on a cooling parameter of an existing mechanical draft cooling tower, analyzing the feasibility of a theoretical value of a cooling parameter of each tower unit, and determining a proper cooling parameter of each tower unit; and (IV) determining an actual value of the cooling parameter of the cooling tower according to a field meteorological condition and determining the size of the cooling tower. By adopting the method provided by the invention, the cooling tower can be prevented from being re-designed in large range, equipment (including a fan) in the cooling tower does not need to be re-designed, thus the design time is shortened and the design cost is reduced, the design efficiency is improved, and the building demand of the nuclear power plant is rapidly met.

Description

technical field [0001] The invention belongs to the technical field of structural design of a mechanical ventilation tower of an important plant water system of a nuclear power plant, and in particular relates to a design method of a mechanical ventilation cooling tower of an important plant water system of a nuclear power plant. Background technique [0002] Mechanical ventilation cooling towers are widely used in industrial fields, such as metallurgy, chemical industry and thermal power plants. Commonly used mechanical ventilation cooling towers are designed according to the operating conditions (heat, water, etc.) and local meteorological conditions to design the size of the required cooling tower and the size of the exhaust fan installed on the top of the tower, usually set More than two cooling towers, one of which is in standby. The cooling tower designed in this way has good flexibility, and different layouts can be adopted for the same area, all of which can adapt t...

AI Technical Summary

Problems solved by technology

The design of the mechanical ventilation cooling tower of a new-sized nuclear power plant’s important plant water system is quite cumbersome. Not only the structure of the cooling tower needs to be recalculated, but also the equipment in the cooling tower must be redesigned because there are no serialized standard products. There are many manpower and material resources, and the design cycle is quite long, which will seriously affect the construction of nuclear power plants

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