Design method and device of air-cooled exhaust steam pipeline with high-level arrangement of steam turbine

Abstract

Embodiments of the present invention provide a design method and device for an air-cooled exhaust pipe arranged at a high position of a steam turbine, belonging to the field of electric power technology. The equipment at both ends of the air-cooled exhaust pipeline is a steam turbine and an air-cooled condenser at the high position of the turbine room and the air-cooled island, respectively, and the design method of the air-cooled exhaust pipeline includes: determining that the turbine room and the air-cooled island are relatively Based on the yaw direction of the air-cooled exhaust pipe; obtain the yaw data of the steam turbine and the air-cooled condenser respectively relative to the height of the turbine room and the air-cooled island; combine the yaw direction and the The deflection data determines the deflection condition for the air-cooled exhaust pipe; and performs a pipeline design analysis of the air-cooled exhaust pipeline based on the deflection condition. The invention fills up the gap in the deflection calculation of the air-cooled exhaust pipe arranged at the high position of the steam turbine, optimizes the overall design process of the air-cooled exhaust pipe arranged at the high position of the steam turbine, and improves the safety and reliability of the design of the exhaust pipe.

Description

technical field [0001] The invention relates to the technical field of electric power, in particular to a design method and device for an air-cooled exhaust pipe of a steam turbine arranged at a high position. Background technique [0002] At present, most of the domestic direct air-cooled exhaust pipes are connected by the X-axis of the exhaust steam device arranged at 0 meters in the turbine room. Before connecting to the air-cooling island outside the factory, it climbs to a height of tens of meters and then connects to the air-cooled condenser. The function is to discharge the exhaust steam of the steam turbine into the air-cooled condenser through the steam exhaust device and the exhaust pipe in turn under various working conditions. [0003] The conventional design method for exhaust pipes is to carry out overall analysis, strength and stability analysis, flow characteristics analysis, etc. The specific factors considered in the analysis and calculation involved includ...

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Problems solved by technology

[0004] However, with the application of the high-level arrangement of steam turbines (i.e., the air-cooled turbogenerator set is placed on the upper part of the coal bunker), the exhaust pipes are also connected from the steam turbines arranged at an altitude of 60 to 70 meters, and connected to the same layout. For air-cooled condensers at high altitudes, under this arrangement, the influence of building deflection on exhaust pipes is amplified and cannot be ignored. However, conventional design methods are still used in the design of exhaust pipes at present. Consider the impact of building deflection on exhaust pipes

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