Hangzhou subway smoke vehicle
Recently, Hangzhou Fire also invited a “great grandmother†to the soon-to-be-opened Subway Line No. 1 – a powerful smoke-exiting fire truck. However, it was not a monster that was going to be destroyed, but the smoke that filled the station with fire. On September 26, Hangzhou Fire held a high-rise building fire drill at the Zhejiang World Trade Center. “Wind-in-law†officially staged the ceremony.
The smoke evacuation vehicle is "intimidating" and the firefighters station is not stable 50 meters away.
Strong smoke exhaust fire truck, there is a domineering professional name: "combination of positive and negative pressure new powerful smoke exhaust fire truck", produced in Shaanxi. Looking at the appearance alone, this fire engine is similar to an ordinary fire engine, and it is also a red body. The biggest bright spot is that the vehicle is equipped with four exhaust fans similar to the turbine engines of the aircraft. It looks like a rocket at a distance.
The person in charge of the Hangzhou Fire Protection Department said, “Don’t look at this big guy's shape, but it’s definitely not a look at it, but it’s a tough one.†Once a large span, a large space is in place, the smoke has become the entire fire. The rescue work is difficult, and the Hangzhou Metro is about to be put into operation, so the Hangzhou Fire Department deliberately introduced this new equipment.
How much energy does this "great mother-in-law" have? Yesterday morning, the firefighters deliberately did a test: A soldier stood more than 50 meters away from the smoke exhauster, but as the smoke evacuation vehicle started, the five big and three rough fire fighters were like "suction star", not only People stand in an unstable position and move backwards.
It is understood that in Hangzhou, there is currently only one such exhaust vehicle equipped with fire brigade. In the future, with the opening of the subway, smoke vehicles will be dispatched at any time according to the police situation.
15 minutes, can change the air of the subway station again
According to statistics, the maximum discharge pressure of strong exhaust smoke fire trucks reaches 800,000 cubic meters per hour. This is a concept. The reporter consulted a professional and concluded that only 15 minutes can change the air in the Wulin Square station.
In the Hangzhou Metro Line 1, Wulin Square Station is the largest site on the line. According to the design data, Wulin Plaza is 161.75 meters long, 36.6 meters wide, and 4.7 meters high. Theoretically, Wulin Plaza can be easily calculated to have a stand area of ​​200,000 cubic meters.
In other words, if a powerful smoke-exiting fire truck is used in the Wulin Square Station, it is theoretically possible to change the air in the entire Wulin Square Station within 15 minutes.
There are also people who are curious about the powerful fire extinguishers and fire trucks. But after all, they are not Transformers. If they don't enter the subway, are they not in vain? Fire experts said that this is not a problem and has been considered in design. “In the future, if it is in distress, the exhaust system of the fire truck can be connected to the interior of the subway through pipelines. Its pumping air distance can reach 300 meters, and it can realize 360-degree all-around multi-angle exhaust, which not only solves the mutual exhaust of the combined smoke exhauster. The problem of interference with wind resistance is an increase of more than 30%~40% of exhaust air volume compared with ordinary smoke exhaust vehicles."
In addition to smoke, it also has a place in hazardous chemicals accidents.
In addition to being able to blow hair, the powerful smoke-exiting fire truck has one more skill than "Wind-in-law": spraying water mist. The powerful exhaust fire truck has 3 tons of water, which can stably provide strong winds and jets of superfine water mist. It will also play a cooling and cooling role in the handling of dangerous chemicals accidents, greatly improving the fire fighting and rescue of the fire brigade. And emergency response capabilities.
The fire department stated that the function of the spray air supply is strong, which helps to dilute the concentration of combustible gases and toxic gases.
In addition, the subway lift also came with new news: Last week, the Hangzhou Special Equipment Inspection Institute introduced the inspection situation of the Hangzhou Metro Line 1 elevator, which mentioned that some time ago, the Special Inspection Institute selected 2 units in the Metro Jiubao. The escalator at the station site conducted pilot supervision and inspection and found some problems and asked the manufacturers to improve.
This news has caused many readers to be very worried, but yesterday the manufacturer of the subway line 1 elevator, Xizi Otis Elevator Co., Ltd. staff told reporters that this is actually a "false alarm": "At that time the test was installed by the relevant department Pilot tests during the period are not formal acceptance tests at the time of delivery."
Otis Company stated that the subway escalator at Jiubao Station was officially accepted on September 10 and all of them obtained a permit.
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