Combined and closed subway station ventilation and air conditioning system and application thereof

Abstract

The invention provides a combined and closed subway station ventilation and air conditioning system. The system comprises exhaust ducts and fresh air ducts, wherein the exhaust ducts and the fresh air ducts are communicated with accident air ducts through accident fan valves I and accident fan valves II respectively; an accident fan is arranged in each accident air duct, each accident air duct is communicated with a tunnel I and a tunnel II through a tunnel valve I and a tunnel valve II, an exhaust header pipe and a fresh air header pipe are arranged above each accident air duct, two ends of each exhaust header pipe are communicated with the corresponding exhaust duct and an exhaust fan respectively, two ends of each fresh air header pipe are communicated with the corresponding fresh air duct and a combined air conditioner, an exhaust valve is arranged on each exhaust header pipe, a fresh air valve is arranged on each fresh air header pipe, and each combined air conditioner and the corresponding exhaust fan are communicated with the corresponding station hall public area through a valve I and a valve II. A traditional piston air duct is omitted, air ducts of an interval tunnel ventilation system and the station air conditioning system are combined together, the building area is reduced, the accident fans and the station air conditioning system are separately arranged, a control system is simplified, and the maintenance workload is reduced.

Description

technical field [0001] The invention belongs to the technical field of subway ventilation and air-conditioning equipment, and in particular relates to a combined closed subway station ventilation and air-conditioning system and its application. Background technique [0002] At present, the integrated closed system widely used in domestic subway stations is to set up a section accident air duct corresponding to each section tunnel at both ends of the station (also serving as the station air supply duct or exhaust air duct), and each accident air duct is equipped with A section accident fan (also used as a station blower or exhaust fan), each accident air duct is connected with the two section tunnels through the damper, and in the case of a fire or blockage in the section, the damper can be switched to make the two tunnels at each end The inter-station emergency fan runs in parallel to ventilate or exhaust any tunnel. A large surface cooler is installed in the air supply duct...

AI Technical Summary

Problems solved by technology

[0003] However, the integrated closed system currently used in subway stations has the following defects: (1) The main roads of urban roads in my country are 30-40 meters long, the secondary roads are 20-24 meters long, and the branch roads are 14-18 meters long. The width of the civil air duct of the system (taking the direction of the subway line as the length direction) is more than 60 meters. The air duct cannot be arranged under the existing urban roads, and it must enter the land on both sides of the road, thus causing the amount of demolition of the subway Increased construction risk, increased project investment, and impact on the construction period; (2) The system has a large number of civil air-conditioning air supply ducts, which do not meet Article 4.3.20 of the "Design Standards for Energy Conservation of Public Buildings" (GB50189-2015) (3) During the construction of the civil air supply duct of the integrated closed system, it is often not tightly sealed and the insulation effect is not good, resulting in a great waste of energy; (4) The air supply fan, return The fan has been operating at low frequency for a long time, and has not operated in the high-efficiency zone of the equipment, resulting in high operating costs of the equipment

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