Direct dry cooling system of natural draft cooling tower

Abstract

The invention discloses a direct dry cooling system of a natural draft cooling tower. Air cooling radiators are arranged in rows and an array on a cross section at a certain height within the tower in a direction parallel to a diameter of the section; the radiators of each row share one steam distribution pipe; from the center to the periphery of the tower, the lengths and diameters of the steam distribution pipes are orderly reduced; such a unique form of row arrangement of the radiators within the tower is conductive to effectively reduce the length of each steam distribution pipe in the system, and therefore, steam exhaust pressure drop in the pipe can be well controlled. The direct dry cooling system of the natural draft cooling tower is scientific, tidy and simple in overall arrangement form; further, the pressure drop of a steam exhaust pipeline is reduced and the electric energy production of a unit is increased.

Description

【Technical field】 [0001] The invention belongs to the engineering field and relates to a direct dry cooling system of a natural draft cooling tower. 【Background technique】 [0002] Direct air-cooling technology has been used more and more in recent years because it complies with the current energy-saving and emission-reduction policies. Commonly used direct air cooling systems are equipped with multiple axial flow cooling fans. [0003] In recent years, with the increasingly stringent environmental protection requirements and the strict control of the operating costs of various engineering projects. In the mechanical ventilation and cooling process of the prior art, the problem of noise prevention and control of the fan is becoming more and more prominent, and its power consumption is relatively large, and the annual maintenance cost is also relatively large. In response to the above problems, a natural ventilation direct dry cooling system came into being, which replaces ...

AI Technical Summary

Problems solved by technology

When the natural ventilation dry cooling system is used to arrange the radiator in the tower, the radiator is usually arranged in a single ring or multiple rings along the circumferential direction in the tower. This arrangement makes the steam distribution pipe longer and the exhaust pressure drop increases accordingly. Large, directly lead to the increase of the back pressure of the turbine, thus reducing the power generation

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