Hot smoke test device

Abstract

The invention relates to a hot smoke testing device for testing the performance of a building smoke control system in a fire situation by using a simulated fire source and a smoke generating device. The present invention includes a burner and a smoke generating mechanism; the bottom of the burner frame is provided with an air inlet pipe, and above the air inlet pipe, more than two nozzle pipes are evenly arranged; The top of the root nozzle is covered with a strip-shaped shield plate; premix nozzles are evenly distributed on the shield plate, and the extended end of the intake pipe is connected with the gas pipeline; the gas pipeline is sequentially equipped with a unit valve, a flow meter, and a total Valves, etc., the pressure gauge is connected in parallel between the flowmeter and the main valve; the smoke mechanism includes a smoke tray and a smoke hood. The invention utilizes liquefied petroleum gas as fuel, improves the safety of the simulated fire source, and strengthens the control of the simulated fire source; the stability and heat resistance of the simulated smoke source are improved; therefore, the present invention is a set of continuously adjustable power of the fire source , safe, clean and portable hot smoke test device.

Description

technical field [0001] The invention relates to a hot smoke testing device for testing the performance of a building smoke control system in a fire situation by using a simulated fire source and a smoke generating device. Background technique [0002] Once a fire breaks out in a building, it will not only cause a large amount of property loss, but also pose a serious threat to personnel safety. According to statistics, about 75-85% of the deaths in building fires are caused by smoke suffocation. Therefore, the smoke control system of a building plays an important role in a fire, and its performance evaluation is very necessary. [0003] Existing hot smoke test devices for performance evaluation of building fire smoke control systems are mainly based on the Australian hot smoke test standard AS 4391-1999. Among them, the simulated fire source uses methanol as fuel, which burns in a steel fuel tray, and a water bath is outsourced to ensure the stability of combustion. In ac...

AI Technical Summary

Problems solved by technology

[0004] (1) Existing devices use methanol as fuel. Since methanol has certain toxicity, if it enters the mouth or eyes during use, it will cause serious injury to the experimenters , the formaldehyde and formic acid produced by combustion are also harmful to health; at the same time, accidents such as leakage and overturning of methanol pool fires may also occur during the application process, causing the fire to spread and leading to accidents and disasters;

[0005](2) The power of a methanol pool fire is mainly determined by its area. A pool fire with a certain area corresponds to a certain fire source power, and the fire source power cannot be continuously adjusted

[0006](3) In the Australian hot smoke test standard, there is no regulation on the form of the simulated smoke source, and the matching smoke furnace is heavy and inconvenient to move

[0008]The existence of these problems has a relatively large negative impact on the promotion and application of hot smoke testing. Innovation

To sum up, a perfect hot smoke test technology should include a safe and clean simulated fire source, a convenient and widely applicable smoke generator, and the existing hot smoke test technology cannot meet these requirements

Images