Support structure for chimney internal steel cylinders

Abstract

The invention relates to a support structure for a chimney internal steel cylinder. The support structure comprises a chimney external concrete cylinder and the internal steel cylinders, wherein the internal steel cylinders are positioned in an inner cavity of the chimney external concrete cylinder. The support structure is characterized in that the outer surface of each internal steel cylinder is connected with a reinforcing ring in a sleeved way and is provided with a plurality of steel corbels and a plurality of hoisting projected lugs; the inner cavity of the chimney external concrete cylinder is provided with a square frame body formed by defining and connecting a plurality of steel beams; the internal steel cylinders are positioned in the square frame body and are hung on the square frame body to form a hanging type hoisting structure; the steel corbels are positioned at the vertex angles of the square frame body; the bottom of each steel corbel is connected with a corbel steel beam; each of the two ends of each corbel steel beam is fixedly connected with the adjacent steel beam of the square body, so that a longitudinal support structure of the internal steel cylinders is formed; each hoisting projected lug is provided with a hoisting hole through which a steel wire passes; and each internal steel cylinder is hung on the square frame body through a steel hanging wire, so that a transverse support structure of a hanging structure is formed. The support structure has the advantages that the reasonable mechanical arrangement is used; the steel strength can be sufficient; the cylinder wall stress is mainly tensioned force, so that the wall thickness can be reduced; and the engineering quantity is reduced.

Description

technical field [0001] The invention relates to a support structure, in particular to a support structure for a steel inner cylinder of a chimney, and is especially suitable for supporting a steel inner cylinder of a suspended chimney. It belongs to the technical field of smoke exhaust equipment for power plants. Background technique [0002] In the prior art, the steel inner cylinder can be divided into self-supporting type and hanging type according to the stress state. When the steel inner cylinder adopts self-supporting type, all the loads are borne by the steel structure of the cylinder wall, and the force is mainly subjected to longitudinal and axial compression or transverse bending, and the steel plate is prone to buckling instability due to longitudinal and axial compression. Therefore, the thickness of the steel plate required to adopt the self-supporting steel inner cylinder is relatively large, and the amount of steel used is relatively high. [0003] However, ...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of potential safety hazards in the existing suspended chimney steel inner cylinder support structure, and to provide a support structure for the suspended chimney steel inner cylinder, which has reasonable force and strengthens the structural load of the steel inner cylinder The characteristics of ability and reducing the amount of engineering

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