Design method and device of main steam pipeline on which steam turbine is arranged at high position

Abstract

The embodiment of the invention provides a design method of a main steam pipeline on which a steam turbine is arranged at a high position. Equipment at the two ends of the main steam pipeline is the steam turbine and a boiler located at the high position of a steam room machine and the high position of a boiler room separately. A design method of an air cooling steam exhaust pipeline includes the steps that deflection directions of the steam room machine and the boiler room relative to the main steam pipeline are determined; deflection data of the steam turbine and the boiler relative to the heights of the steam room machine and the boiler room separately are acquired; the deflection working condition of the main steam pipeline is determined through the combination with the deflection directions and the deflection data; and design analysis of the main steam pipeline is carried out based on the deflection working condition. By means of the technical scheme, the blank in deflection calculation of the main steam pipeline on which the steam turbine is arranged at the high position is filled in, overall design of the main steam pipeline when the steam turbine is arranged at the high position is optimized, the situation that additional tension or pressure is generated to the pipeline by deflection of a building, so that connection between connectors at the two ends of the main steam pipeline and the equipment is affected is avoided, and the working safety and reliability of the main steam pipeline are improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a design method and device for a main steam pipeline arranged at a high position of a steam turbine. Background technique [0002] At present, the domestic steam turbine body is mostly arranged on the operation floor of the steam turbine room, and the main steam system connected to the steam turbine body from the boiler body will have a large vertical pipe in front of the furnace. In order to eliminate the concentrated stress caused by the thermal expansion of the vertical pipe, in the steam turbine Most of the side will design some horizontal pipes to absorb the displacement of the riser. [0003] The conventional design method is to analyze the state of the pipeline, including its installation state, cold state, and operating state. The specific factors considered in the analysis and calculation include the pipeline's own weight, pressure and temperature, thermal displ...

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Problems solved by technology

[0004] The existing technology does not consider the impact of the building's deflection on the pipeline design when the steam turbine is arranged at a high level

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