Mechanical induced ventilation air-conditioning system for subway platform and ventilation method

Abstract

A mechanical induced ventilation air-conditioning system for a subway platform comprises a fresh air shaft, an exhaust shaft and a plurality of jet fans, the fresh air shaft is communicated with one end of the air-conditioning system through a pipeline, and the exhaust shaft is communicated with one ends of two sets of smoke exhaust fans in parallel through pipelines. The other ends of the two groups of smoke exhaust fans are respectively communicated with the air exhaust and smoke exhaust air port and the air return port through pipelines, the jet fans are arranged on the upper side of the platform layer of the mechanical station and are distributed in a dot-matrix manner, and the jet fans are used for longitudinal induced ventilation; the other end of the air-conditioning system is communicated with an air-conditioning blast pipe in the platform plate through a pipeline; a plurality of attached air supply outlet devices arranged on the platform plate are communicated with an air conditioner air supply pipe through pipelines. The air conditioner and smoke exhaust airflow organization of the platform layer is optimized, an air return pipe of a public area of the platform layer is omitted, the platform clearance is improved, and the platform shield radius and the construction cost are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of ventilation of station platform layers by mechanical methods, in particular to an induced ventilation and air-conditioning system and a ventilation method for subway platforms by mechanical methods. Background technique [0002] At present, domestic subway stations are mainly constructed by a combination of open-cut, under-cut and open-cut excavation. The construction of open-cut stations needs to occupy a large ground space. It is more and more necessary to realize the station construction by mechanical method. [0003] The ventilation and air-conditioning systems of underground stations are mostly configured in the form of air-conditioning with the whole air system as the main system and the distributed air-conditioning terminal as the auxiliary. Generally, the air duct arrangement is in the form of one-to-one or two-to-two. The method station can no longer meet the space requirements occupied by the h...

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Problems solved by technology

[0003] The ventilation and air-conditioning system of underground stations is mostly configured in the form of an air-conditioning system based on an all-air system and supplemented by a distributed air-conditioning terminal. The space requirements occupied by the huge ventilation and air-conditioning pipelines could no longer be met in the French station. The main design difficulty of the mechanical method station lies in the platform level. At present, the pipeline layout of the mechanical method platform level is realized, and the traditional system can no longer meet the requirements.

[0004] Based on this, in the prevailing environment of mechanical method stations, the traditional ventilation and air-conditioning system has restricted the implementation of mechanical method stations to a certain extent. In the case of reducing the ventilation and air conditioning configuration of the station, appropriate and reasonable adjustments must be made to the ventilation and air conditioning form of the station, and a new ventilation form is required to replace the traditional air conditioning and ventilation system

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