HCB Chapter 521 is incredible
Chapter 521 is incredible
At this time, the fire demonstration house was filled with extremely high concentrations of water vapor and smoke, making it difficult for people to see the situation inside, which blocked the fire brigade's footsteps.
"The dust and mist are so thick that you can hardly see your fingers. I'm afraid it will be difficult to carry out the next fire extinguishing."
Seeing this situation, the watching ministers shook their heads one after another.
Anyone who knows about firefighting knowledge knows that at a fire scene where flames are raging, if firefighters rush into an area shrouded in a large amount of smoke, it is almost the same as death.
The first one is that because the line of sight is obscured by smoke, you cannot know what is going on inside, and any accident may happen.
Another is the smoke produced by the fire, which is generally highly toxic.
You must know that there is no such thing as a gas mask in Daqin. At most, it is just wrapped in a piece of wet cloth. And die!It can be seen that the consequences are serious!
Therefore, almost everyone on the field now thinks that this fire drill is about to come to an end, and the prince still stumbled here after all.
Ying Zheng also looked at Ying Yu hesitating to speak, not knowing what to say.
However, Ying Yu remained calm, showing no signs of nervousness or disappointment because the fire brigade was blocked by smoke.
Just when everyone thought the drill was over, the fire brigade captain turned on another switch on the steam fire engine.
The vent of the positive pressure smoke exhaust fan was opened, and the strong wind instantly blows the smoke permeating the field into the house, and then blows it out from the other side of the house.
After repeating this cycle several times, the smoke began to become thinner and thinner, and the interior of the fire demonstration house quickly became clear.
"I didn't expect this steam fire engine to have such a function! No wonder His Royal Highness was so calm just now, it turns out that he has a plan in mind!"
Xiao He glanced at Ying Yu, and suddenly understood.
But at the same time, his reverence for Ying Yu became more and more profound. After all, something as ingenious as a positive pressure smoke exhaust fan, probably only Ying Yu could design it.
"The steam fire engine you designed is indeed powerful. Besides its powerful water power, it can also disperse smoke. No wonder you are so confident."
Ying Zheng was also relieved to see this, and a smile appeared on the corner of his mouth again.
"Father is very praised."
Ying Yu said modestly.
All this happened completely in his expectation.
Because after Ying Yu handed it over to the members of the fire brigade, they had already practiced the use of the positive pressure smoke exhaust fan countless times, and now it is naturally handy to do it repeatedly.
At this time, the fire brigade had cleared all the flames from the ground floor of the fire demonstration house, sprayed the foam and completely prevented the re-ignition of these wood and hay.
The only thing left untouched now is the double-storey attic above the house.
Due to the flames from the lower building, the only staircase leading to the double-storey attic has been burned into black charcoal, and it is obviously impossible to use it again.
However, due to the high height of the double-storey attic and the insufficient power of the auxiliary water cannon, the auxiliary water cannon could not spray water up, and naturally it was difficult to extinguish the flames above.
And even if it can spray to the first attic, it can't spray to the second attic which is completely blocked by the first attic.
At the same time, you have to be extremely vigilant on the way, because under the continuous raging flames, the attic without support may collapse at any time, almost dancing on the tip of a knife.
It is for this reason that double-storey attics are generally considered to be the most difficult fire-fighting housing structures.
Seeing this scene, the emotions of the onlookers were mobilized again.
However, since they were amazed by the positive pressure smoke exhaust fan, this time they only have expectations in their eyes, and they are looking forward to the appearance of new functions of the steam fire truck.
Sure enough, the double-storey attic did not stop the fire brigade.
A member of the fire brigade extended four cantilever brackets from the bottom of the steam fire truck, which stabilized the shaky body of the steam fire truck.
Immediately afterwards, a ladder made of hollow steel was drilled out of the steam fire engine. After telescopic extension, the length soon exceeded the height of the attic, and then it was erected on the double-storey attic from the outside.
This is also one of the designs of the steam fire truck, the name is the fire ladder.
Under the power of the steam hydraulic machine, the hydraulic pressure will cause the piston rod to extend or retract. If the piston rod is extended, the ladder will be raised, and if the piston rod is retracted, the ladder will be lowered.
At the same time, gears are installed at the connection of the ladder, which can be used to move the ladder left and right, and adjust the position of the ladder according to various conditions at the fire scene.
The design of this fire ladder is precisely to deal with the lack of access but too high areas like double-storey attics.
After solving the problem of entering the double-storey attic, the remaining things are naturally much simpler.
The members of the fire brigade climbed up the stairs with the auxiliary water cannon, basically repeating the actions of flushing and foam covering.
In this way, the fire-fighting house structure, which is generally considered the most difficult to deal with, was easily solved by a flexible fire-fighting ladder.
When the last ray of flames in the fire demonstration house dissipated, it was announced that the fire drill had ended successfully.
At this time, the crowds who had been watching, including the ministers, had been completely conquered by this powerful steam fire truck, or rather by Ying Yu!
"I didn't expect it to be successful. The function of this steam fire engine is so powerful!"
"That's right, if it were the water dragon from before, I'm afraid it would have been completely over from the moment the smoke rose!"
"His Royal Highness is definitely the reincarnation of a sage. Otherwise, how could we have developed so many ingenious things? If we put this in the past, we might not even have imagined it!"
"What nonsense are you talking about! What sage reincarnated, with the achievements of our Crown Prince today, is there any sage in history who can compare?"
"Yes! His Royal Highness is clearly a living sage."