Disguised exhaust port with cold chamber

Abstract

The invention relates to a disguised exhaust port, which comprises an exhaust cover, an exhaust pipe, a cold chamber and a connecting pipe. The exhaust cover is arranged on the upper part of the outlet of the exhaust pipe, the cold chamber is arranged in the outlet of the exhaust pipe, and the connecting pipe is connected with the cold chamber and outside air; the pore of the exhaust cover is smaller than the outlet of the exhaust pipe; and the cold chamber is provided with an opening facing the outlet of the exhaust pipe, and the project of the cold chamber in the direction of the outlet of the exhaust pipe is larger than the outlet of the exhaust pipe. Although high-temperature gas is continuously discharged out of the exhaust pipe, the temperature of the corresponding part of the exhaust port imaged in a thermal infrared image during vertical reconnaissance can be reduced through the outside air, the characteristics of the thermal infrared exposure of the exhaust port can be eliminated, and thus the disguising purpose can be achieved.

Description

Technical field: [0001] The invention relates to an exhaust port, in particular to a camouflaged exhaust port. Background technique: [0002] Underground projects such as underground command posts, communication stations, personnel shelters, etc. require ventilation in the project to ensure the amount of fresh air required by the personnel in the project or meet the requirements for dissipating waste heat in the project. Therefore, underground works are generally provided with special air inlets and exhaust outlets. The exhaust port is generally composed of two parts: one is the shaft part under the ground, and the other is the hood part on the ground. The top of the hood is a concrete slab, and there are louver-shaped air outlets around it. The temperature of the exhaust outlet of the personnel activity area is about 20°C, and the temperature of the exhaust outlet of the diesel power station is about 100°C. Exhaust at such a high temperature can heat the hood to such a h...

AI Technical Summary

Problems solved by technology

The disadvantage of the first method is that a large amount of heat storage material is required, and the heat storage capacity of the heat storage material will gradually decrease during long-term operation, and the exhaust temperature will still increase, resulting in thermal infrared exposure; the disadvantage of the second method is that The amount of induced air from the outside is large, especially for the case of high exhaust temperature, and the exhaust temperature after mixing is still higher than the ambient temperature, which may still cause thermal infrared exposure

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