The Newco door engine, the early form of the steam engine, was also the foreshadowing and foundation before Watt made epoch-making improvements to the steam engine. The pen, fun, and pavilion www.biquge.info is one of the early forms of steam engines used in industry.

In fact, the Newcomen steam engine uses the vacuum generated when the steam is condensed to do work and generate power. In the Newcomen steam engine, the valve is closed after the steam enters the cylinder, and then cold water is sprinkled into the cylinder, and the steam condenses. When the vapor condenses, it creates a vacuum inside the piston side. The air pressure on the other side of the piston then pushes the piston into motion.

Although the thing in front of me is simple, although it looks a little confusing, the principle it shows is just like this Newco door machine.

The combustion boiler produces steam, and the steam enters the iron drum along the iron pipe, and the expanding steam pushes the right side of the beam upward, and the left side is pushed down, and the stone pan sinks into the pit. Then the orchestra pulled down a thing, which must have been equivalent to a valve, separating the long iron pass that was used as a cylinder from the boiler below, so that the steam did not enter the long iron barrel, and then poured cold water into the long iron barrel, and the hot steam contracted violently and condensed, forming a vacuum in it, so that the air pressure on the other side was pressed downward, and the force was applied downward, so that the left side of the beam was brought up again, along with the stones.

Obviously, although the thing in front of you is rudimentary, it is also a machine that uses steam condensation to create a vacuum and uses air pressure to do work.

Xia Hongsheng was excited, you know, Watt was based on the Newcomen steam engine, a series of epoch-making improvements, so that the steam engine finally started the modernization process. And even in the later era of Xia Hongsheng, these inventions of Watt are still used in modern steam engines.

Newco door machine, it can be said that in the invention process of the steam engine, played a key role in connecting the previous and the next!

Now, it may no longer be called a Newco door machine.

Lee Tae-ki? Musical machines? Jingyang Academy students?

Kindness...... It's a little too ugly!

After everyone finished displaying, they all gathered around Xia Hongsheng.

Letai also came over with a smile, looked at Xia Hongsheng, and said, "This steam is really as the mountain chief said, and the power is huge. If it weren't for the fear of too much steam, and the boiler or iron pipe would explode, this force could be even greater! ”

Hearing this, Xia Hongsheng was stunned, and he was afraid that after the boiler explosion, this thing had not exploded.

Xia Hongsheng raised his finger and pointed to the two-story building and asked, "This...... Who came up with this idea? ”

Everyone looked at Li Tai, and Letai smiled: "This is all Zitai's idea." Among these students, he has the most ideas. ”

"No, these are all discussed by your classmates." Li Tai shook his head and said.

"Mountain Chief, these ideas were come up with by Zitai. After Zitai came up with the idea, he told everyone that your classmates discussed whether it was feasible or not. A student said.

"Brother Boyan's words are wrong, if it weren't for the discussion with your classmates, how could it come true if you didn't have a single idea?" Li Tai shook his head and said.

Xia Hongsheng was pleased to see Li Tai behave like this, compared to the conceited and arrogant Li Tai when he first met Li Tai, and he didn't know much better.

So Xia Hongsheng looked at Li Tai with a smile and asked, "Zitai, tell me, what do you think?" ”

"Yes, Master!" Li Tai saluted and replied: "The student originally thought that the steam pushed the teapot lid and jumped around because the steam could touch the teapot lid, but the steam burning in the boiler ran away when it was released, and it couldn't touch things, so how could it push things?" If you want the steam to push something directly, you need something to make the steam touch the thing you want to push. So the students wanted to make a pipe, one end connected to the boiler, the other end connected to the thing to be pushed - that is, the big stone, the students wanted to see how powerful the steam can be, pushing the lid of the pot is not the ability, can push the boulder, the power is great - in order to let the steam directly push the stone, the student and your classmates made an iron pipe. ”

If the pipe is not sealed, how can the steam exert its strength? Xia Hongsheng turned his head to look at those things, and found that there seemed to be a layer of things outside the iron pipe, and after a closer look, he couldn't help but feel that these students had a way. The outer layer of the iron pipe is clearly dried fish maw glue.

But Li Tai said again: "Later, the students found that steam can really push a lot of things, so we brought the boss a wooden box, and asked people to put stones into the wooden box, and connected the wooden box and the boiler with iron pipes, and sealed the wooden box and iron pipes with fish maw glue. The steam came down the iron pipe, and it really knocked down the wooden box. Later, the students had to water the boiler to extinguish it, and when they did, the water poured inside, but they didn't expect that there was a suction force from the pipe, and some of the ash and small gravel in the wooden box were sucked in. The students tried many more times and found that it was the case, but only cold water had to be poured on it, not hot water. ”

Xia Hongsheng couldn't help but be happy, the sealing of this fish maw glue is quite good! It is so good to be able to seal the wooden box.

Later, from the construction site, I saw that the people on the construction site supported a pillar, and on the top of the pillar made a beam with a pulley and put it in front of the building, and put cement on the side close to the building, and the other side was warped. The principle was not difficult, and the students wondered if they could replace those people with steam. So I thought about adding a beam, so that the steam could push this side up, and that side would sink accordingly, and then inject cold water to let this side suck it back again, and that side would be lifted. Finally there is this thing. Li Tai said: "Later, the students found out that if you add a plug to the iron pipe, the heat here will be first, and the plug will be pushed and flushed with the net, and the hot air will be cut off and cold water will be poured back." The students attached a pole to the plug and the other end of the pole to the beam. As soon as the plug moves, the pole moves, and when the pole moves, the beam moves up and down! ”

"Good!" Xia Hongsheng stretched out his thumb to these students and said, "It's all good!" How many times have you failed in the middle, how difficult and dangerous it is, how many times you want to give up in despair and grit your teeth and persevere, you don't need to ask for a teacher. You may not know how significant your invention is today. As a teacher, I can tell you that this is the epoch-making significance. Today's inventions are like gunpowder. Gunpowder has substituted Datang's military into a new era, and today's invention is to bring Datang's industry into a new era! (To be continued.) )