Air cooling device bracket for large-size thermal power plant

Abstract

The invention relates to an air cooling device bracket for a large-size thermal power plant, which comprises a steel truss and a reinforced concrete pipe column arranged below the steel truss for supporting the steel truss, wherein the steel truss is provided with an A-shaped frame, and the periphery of the steel truss is provided with wind-break walls; and a strutting piece is arranged between the bottom of the steel truss and the reinforced concrete pipe column. The bracket reduces the steel truss end deflection of under the action of weight loads of the vertical devices, reduces the heightof the steel truss, and can effectively reduce the engineering cost.

Description

technical field [0001] The invention relates to an air-cooling equipment bracket, in particular to a bracket structure for an air-cooling equipment unit of a large-scale thermal power plant. Background technique [0002] Thermal power generation is the main form of power generation in my country at present and in a certain period in the future, among which the structural facilities of power plants are an important part of lifeline engineering. In the past, traditional thermal power plants generally used the cooling tower wet cooling process to cool the exhaust air from the turbine generator, but because the circulating water of the wet cooling tower exchanges heat with the exhaust air in the form of "rain", during the cooling process, A part of the water evaporates into the air, and another part of the water is lost, resulting in a large waste of water resources. However, most of my country's thermal power plants are concentrated in the coal-rich and water-deficient areas i...

AI Technical Summary

Problems solved by technology

At present, the research and application of air-cooling units in thermal power plants in my country is still in the preliminary stage. There are no national and industrial design regulations and specifications. The traditional foreign forms are generally used in all aspects of air-cooling technology. The main characteristics of traditional air-cooling equipment brackets are as follows: ( 1). Large span, long cantilever, heavy load; (2). The distribution of mass and stiffness is extremely uneven, and it is a tall chicken-leg structure with soft bottom and rigid top; (3). The structural connection is complicated, and the lower part has a small wall-to-diameter ratio Large-scale reinforced concrete pipe column, the upper part is a cross-steel truss with large span and long cantilever, and the connection is complicated, which belongs to the steel-concrete hybrid structure; (4). The fan of the power equipment operates at low frequency for a long time, and it is easy to resonate with the structure; (5) ). The structural construction is very difficult, mainly in the construction of reinforced concrete pipe columns and the construction of space steel truss nodes

[0004] For a long time, the design market of air-cooled power plants has been occupied by foreign GEA companies and SPX companies. In the past, in order to save initial investment, domestic construction units usually used foreign companies to purchase less and more designs, while foreign companies were only responsible for design and not supply, which makes their design more biased towards safety considerations, resulting in huge waste

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