Underground tall and large space building ventilation model test bed design method in top air supply mode

Abstract

The invention discloses an underground tall and large space building ventilation model test bed design method in a top air supply mode, and the method comprises the following steps: building a proportional model test bed based on the same Archimedes number and heat Archimedes number of a prototype and a model, and carrying out the testing, verification and optimization according to a designed ventilation scheme; respectively measuring the speed difference and the temperature field of the working areas of the generator layer, the bus layer, the water turbine layer and the volute layer, checkingwhether the working areas meet the standard requirements or not, and verifying the design scheme. Designing an experiment by using an orthogonal method, changing the air supply volume and the position and number of arch crown air supply outlets, and optimizing the design scheme; on the premise that the optimal wind speed of a generator layer working area is guaranteed, determining the minimum total ventilation amount needed by a main workshop through a scaling model test, and determining the form, the number, the wind speed and the optimal wind opening arrangement position of wind openings.

Description

technical field [0001] The invention relates to the field of underground building environment engineering, in particular to a design method for a ventilation model test bench of an underground high and large space building under the top air supply mode. Background technique [0002] The main plant is an important part of the pumped storage power station. The main plant is located underground, and the electromechanical equipment in the plant is huge. Generally, the main powerhouse is divided into five floors, generator floor, busbar floor, water turbine floor, volute floor and draft tube floor. Large-scale hydroelectric generating units and electromechanical equipment are installed in the main plant to meet power generation needs. The equipment has a large amount of heat dissipation and moisture dissipation. In addition, the air circulation in the underground plant of the deep-buried hydropower station is poor, hot and humid. In order to improve the working environment in th...

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Problems solved by technology

Large-scale hydroelectric generating units and electromechanical equipment are installed in the main workshop to meet the demand for power generation. The heat dissipation and humidity of the equipment are large. In addition, the air circulation in the underground workshop of the deep-buried hydropower station is poor, hot and humid.

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