Connecting device of boiler furnace frame and main factory building structure

Abstract

The invention relates to a connecting device of a boiler furnace frame and a main factory building structure. In general cases, the relative displacement between the boiler furnace frame and the main factory building structure is allowed. Under the condition of oversize displacement, the two structures can be coordinated to shift, so that the oversize displacement is avoided, and the safety of pipelines is ensured. The connecting device comprises a limited flexible connection member connected between the boiler furnace frame and the main factory building structure.

Description

technical field [0001] The invention relates to a connecting device for a boiler frame and a main factory building in a thermal power plant. Background technique [0002] The general conventional boiler frame and the main building structure are designed as independent structures, the boiler frame is designed by the boiler factory, and the main plant structure is designed by the electric power design institute, so the displacement of the boiler frame and the main plant structure is their own independent. As the height of the boiler frame and the height of the main building are getting higher and higher, their respective horizontal displacements are also getting larger under the action of horizontal loads such as earthquake force and wind load. For larger and larger relative displacements, the connecting pipes between the boiler and the steam turbine in the main powerhouse will bear the pipe stress caused by the greater relative displacement. Once the stress exceeds a certain...

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Problems solved by technology

[0004] The plan of using horizontal truss 2 connection (quasi-rigid connection) can coordinate the deformation of the boiler frame and the main plant structure under normal horizontal loads, but the disadvantages are obvious

First of all, the boiler and the main workshop, two structures with a very large total mass and the same order of magnitude of total mass, are forcibly connected through the platform in front of the furnace, which will inevitably generate considerable concentrated stress at the connection site; secondly, such a connection, the mutual The impact is relatively large. If independent designs are still used, the results of the design calculations will deviate greatly

Again, this arrangement of simple connections does not give full play to the mechanical performance potential of the structural system. The number of components (especially supports) may not necessarily be reduced, but may be increased. The efficiency of material and space utilization is low. Finally, as in extreme horizontal forces Under the action of the horizontal truss, the connection of the horizontal truss will be destroyed, and the redistribution of stress will cause serious consequences of structural brittle failure, so this kind of connection method is generally not recommended

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