When he saw the bellows, Lu Daqiang had a flash of inspiration in his mind, the blower box also conveys wind, and its interior is a piston structure.

Then Lu Daqiang thought that since the power of these steams is so great, if the spout of the teapot is made into a cylindrical shape, and then a piston is made inside that is similar to that of a blower, and the wooden rod or iron rod of the piston is connected to a crankshaft, so that many machines can be driven.

For crankshafts and connecting rods, Lu Daqiang is naturally no stranger, because they have manual machine tools, and there are many places where crankshafts are used in machine tools, in fact, these connectors can be traced back to the Qin and Han dynasties, including changing the direction of force through gear conversion, as a master, Lu Daqiang is naturally no stranger.

It is also very simple to change the direction of the force in a reciprocating motion.

Then Lu Daqiang thought of the blower box, double air inlet blower box, this kind of blower box was invented in the Wude period, in order to improve the efficiency of iron smelting, whether it is pushed forward, or pulled out will send air into the furnace, which greatly improves the efficiency of the blast, which is also one of the important tools for the further improvement of Datang's iron smelting technology.

Invented in the Tang Dynasty, the double-inlet air blower box.

As a top carpenter master, Lu Daqiang will naturally make double air inlet blower box, as long as the air piston in the middle of the blower box is replaced with metal, the air inlet on the left and right sides is changed to the air outlet, and the original air outlet is changed to the steam air inlet, so that with the push of steam, the piston in the middle will go back and forth for reciprocating motion.

Then the left and right steam types will take turns to enter the steam, and the steam will rush out from the two air outlets in turn, to push the other two connecting rods for a reciprocating motion.

After figuring it out, Lu Daqiang immediately began to cast such a structure, in which the piston structure in the middle of the seal, Lu Daqiang used the metal sealing ring invented by His Royal Highness before, this thing is very easy to use.

It's just that the difficulty of casting far exceeds Lu Daqiang's imagination, and it may also be because of their unskilled technology, there are a lot of problems with the sealing of the cylinder alone, and a test in the early stage is because the cylinder casting is not enough, resulting in the cylinder being stuck, and then the front connecting pipe is directly exploded.

If it weren't for the fact that no one was around at the time, and the seal was upward, it is estimated that the people hit by it would have been gone, and the broken seal smashed a large hole directly into the concrete wall of the experimental site.

And the power of that steam made their people have a new idea, that is, if they make a long pipe, stuff an iron ball in it, and then heat it with steam, the iron ball is slightly larger than the steel pipe, and the power of steam can push it out.

Wouldn't it be hugely powerful if it were to be launched? They also tested this test, but the results left them a little speechless, because the steel pipe blew up.

The high-pressure steam was not enough to push the iron ball out of the steel pipe, and the valve responsible for sealing it behind could not withstand the force of the steam and exploded directly.

Later, they thought of other ways to make the iron ball the same volume as the steel pipe, but placed a thin wooden cylinder with a thin front end and a thick back end behind the iron ball to plug the steel pipe, and the iron ball and the wooden stake cylinder were cross-fixed by a thin iron sheet.

Because the rear end of the stake is thicker than the steel pipe, when there is a huge pressure, the stake will be directly extruded and deformed, and they also apply lubricating oil to the inner wall of the steel pipe to lubricate it.

The end result...... Well, how to put it, the power is not small, because the huge steam pressure was blasted out of the iron ball flew out of a few hundred meters, but the whole process was too long.

Later, Lu Daqiang didn't do it, but handed it over to Lu Daqiang's apprentice to be responsible, and Lu Daqiang himself continued to study this machine.

Now the whole machine has finally succeeded!

"Relieve the pressure, pull a drive shaft over, and we'll see if we can convert it to a hand drill bit." Lu Da said in a strong voice.

The person in charge of the wind blower here immediately stopped what he was doing, and some craftsmen also ventured into the interior of the room, pulled a device, and with a loud "buzz" sound, a white steam instantly erupted from the hole reserved in the concrete room.

After the speed of the steam injection slowed down, Lu Daqiang and the others all entered the room one after another, and soon someone pulled over a handmade machine tool that had been prepared.

It was originally a machine for drilling, which they copied later, but now it has been modified and a special thick geared shaft is linked.

After closing the intake valve, the flywheel on this side stopped, Lu Daqiang and they quickly connected this thing, and after the transmission shaft was connected together, Lu Daqiang immediately ordered someone to reopen the intake valve and start heating.

When the flywheel began to rotate again, the drill bit next to it soon began to rotate at a terrifying speed, and Lu Daqiang and the others immediately took a thick piece of wood and began to approach the drill bit.

With the flying wood chips, the drill bit drilled directly through the thick planks at an unprecedented and terrifying speed.

Instantly, the whole room burst into applause!

"It worked! It really worked! It's so useful! Everyone roared with emotion, and even some craftsmen couldn't help but hug each other directly, because this thing was no longer made by them relying on His Highness's drawings, but by themselves!

Although they are also inseparable from His Highness's guidance, compared to before, they can only follow the map, and now they can develop some useful things for His Highness on their own, and they are of course excited.

His Highness is too kind to them craftsmen, and if they can't develop something useful, they feel that they are really ashamed of His Highness.

"Shall we report to Your Highness?" A craftsman couldn't help but ask.

"Report, of course report, good news to Your Highness! Since this thing relies on the power of steam, it would otherwise be called a steam engine. Liu Chang said.

"Okay, it's called a steam engine, learn from Your Highness, these things should be named simply and straightforwardly, so that ordinary people can understand them." Lu Daqiang also said excitedly.

decided to report the good news, Lu Daqiang naturally asked Tian Meng to inform them, and they even forgot that at this time, it was already close to dusk.

When the guards of the industrial zone received the order and hurried to Chang'an City, the gates of Chang'an City had already been closed. Fortunately, this is a matter of the industrial zone, and the guards know the importance, so they directly took out the token and asked the defenders to open the city gate.

Then he himself rode straight into the city.