Direct air cooling island windbreak deflecting device for power station

Abstract

The invention relates to a direct air cooling island windbreak deflecting device for a power station, which comprises windbreak deflecting nets, a fixed support rod and an adjustment rope, wherein the fixed support rod and the adjustment rope are fixedly mounted between the lower edge of an air cooling island platform and the ground respectively, the fixed support rod is positioned at the inner side of the adjustment rope, the windbreak deflecting net is composed of a porous netting sheet and side frames, a plurality of windbreak deflecting nets are distributed between the fixed support rod and the adjustment rope in a vertically layered manner, one end of each of the windbreak deflecting nets is fixed on the support rod while the other end of the windbreak deflecting net is fixed on the adjustment rope, the angle of inclination of the windbreak deflecting nets is adjusted by pulling the adjustment rope up and down, so that the direction of environmental wind from the outer side of the air cooling island is changed from downward slope to upward slope, therefore, the device plays the role of defecting the environmental wind, increases the pressure in a negative pressure area, raises the flow rate of cooling air from air cooling units at the periphery of the environmental wind, reduces the hot air reflux, improves the heat exchange characteristic of the air cooling condenser, and has no impact on air flow of internal air cooling units, so as to enhance the operating safety and economical efficiency of air cooling unit.

Description

technical field [0001] The invention belongs to the technical field of energy and power, and in particular relates to a windproof and diversion device for a direct air cooling island of a power station. Background technique [0002] In the north of my country, the area where the pit mouth power plant is located is seriously short of water resources, especially in the dry season, it is even more difficult to bear the large water consumption, which affects the question of whether the power plant can be built. Direct air-cooling technology, due to its outstanding water-saving features, can well solve the bottleneck problem of water resources. The direct air-cooling island used in this technology includes dozens of air-cooling fans arranged in rows, and uses ambient air to cool the direct air-cooling condenser. Forced convection heat transfer. Practice has proved that the heat transfer effect of the direct air-cooled condenser is easily affected by external environmental factor...

AI Technical Summary

Problems solved by technology

But the blades (5.1) installed in the air cooling island ( Figure 5 ) is small in number, and there is a negative pressure area behind the blade (5.1), which makes the ambient wind appear cyclone backflow phenomenon behind the guide blade, which deteriorates the flow field of the internal air-cooling fan unit and reduces the air intake of the fan inside the air-cooling island , the problem that the ambient wind reduces the air suction volume of the air cooling system has not been effectively and completely resolved

In addition, only one control rod (5.3) is used, which makes the overall movement of the blade (5.1) easy during adjustment, the angle range of adjustment is limited, and the flow diversion effect becomes poor; the two vertices of the blade (5.1) are not fixed, and it is easy to swing when the environment is windy , which affects the diversion effect; in addition, this document does not give the adjustment angle range of the blade (5.1) and the vertical distance between the adjacent blades (5.1)

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