The principle of the steam engine is so simple that it is not even a large mechanism. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

For this point, Liu Yuanshan has a deep understanding, when he was alive in his last life, he once DIY the steam engine himself, the principle is simple to use two cans to complete the production, and it runs fast.

If you want to make a steam engine with more power, the requirements for the boiler are a bit high, but Liu Yuanshan is not worried about this, since there is steel, then the boiler is not a problem, as for safety considerations, he can increase the production cost to more than twice the cost, the big deal is to make the furnace wall of the boiler thicker.

Although the principle is very simple, there are several key technologies to be tackled, one is the tightness of the cylinder and the effect of the production process, which is a bit difficult, but fortunately, the original steam engine does not have too strict requirements for airtightness.

The second is the piston, which is no problem, if the production is not good enough, it can be replaced.

The rarest is the trachea.

In later generations, many steam pipes used rubber pipes or polyethylene pipes, which were impossible for Liu Yuanshan to get in this era, so they could only be replaced by steel pipes, but at present, it is a bit troublesome for him to produce steel pipes.

It's not that it can't be produced, but it's laborious!

It's really a hassle.

This requires the steel to be beaten into a thin sheet first, and then according to the previously made steel shaft as a mold, the steel sheet is sleeved on the outside of the steel shaft, and the steel shaft is beaten and closed on the outside, and finally the steel shaft is pulled out to obtain the steel pipe.

A small section of steel pipe can exhaust people to death.

But the pain of industry is like this, if you want to be convenient, you must first work hard, this is no way to do it.

Liu Yuanshan took out a book on the principle of steam engines, which had specific construction dimensions and production and installation methods. Han Laotie was illiterate, so he explained to Han Laotie little by little, and it took him a long time to explain the size and practice of the most important parts and shapes.

There weren't a lot of things to make, a cylinder, a piston, a few steel tubes, a few connecting rods, and a simple boiler.

There are not many things, but it can be relatively precise, such as the fitting precision of the piston and the cylinder, although it does not require too good sealing, but it cannot be too bad to expose a large gap!

For this reason, Liu Yuanshan also gave the three of them enough time to stay, and the goal was set at one month. Han Laotie calculated for a while, and after confirming that there was indeed no problem in making these things in a month, he nodded his head and agreed.

Thinking that he would be able to use the steam engine in a month, Liu Yuanshan was in a good mood and said secretly: With the steam engine, it can not only solve the problem of air blast and improve the quality of steelmaking, but also make a mechanical mill to produce cement, stir and produce soap, and can be installed on a ship to drive a ship, etc.

Liu Yuanshan believes that once this machine appears, it will be like a sharp sword cutting through the night, which will drive the entire human society to develop rapidly, and the industrial society will no longer be far away.

With machinery, the next step is to study electricity, but there are too many things needed for power generation, not only magnets are difficult to find, but also coils, insulation, wires, voltage and current control and so on cannot be matched.

Alternating current will definitely not be able to be used in the short term, so it can only start with direct current, just like the society in later generations.

Direct current first appeared in the form of dry batteries, this is not difficult, the Ming Dynasty already had such a thing as zinc, graphite + zinc is easy to make dry batteries. But this is not something that can be achieved overnight.

Just when Liu Yuanshan was planning his future thoughts, a team slowly walked into Gushan Town and walked in the direction of Liujia Village.

On the side of the wharf in the mountain town, a flat boat floated up the narrow river, and it was not long before it docked, and a fifteen or sixteen-year-old girl dressed in red came down from the boat.

"Girl, it's here!" A chubby middle-aged man in his forties smiled and bowed to say hello.

The woman shook her head, her face was a little sallow, and she held her stomach with her hand and retched on the dry grass on the shore for a while.

"It's here, damn it, I don't have to take the boat at last, I'm almost throwing my intestines out, you say it's easy for me to pass on a word. Damn little liar, look at how this girl cleans you up when she sees it! ”

The person who came was a girl in Xiangwang's family in Xiangyang Mansion, whose name was Chunyan, who had a close relationship with Liu Yuanshan and had several relationships. And beside her, the honest waiter is the housekeeper in the Xiangwang Mansion, and he is also Liu Yuanshan's old acquaintance: Zhu Qi!

It stands to reason that Chunyan is the subordinate, Zhu Qi is the housekeeper, and Zhu Qi is the head of everything. But Chunyan is the personal maid of the little county lord, the two have been sisters together since childhood, her identity is unusual, and even Zhu Qi does not dare to slack off.

"Girl, it's noon this day, why don't we have some dinner in the town before leaving!" Zhu Qi cautiously suggested.

Unexpectedly, Chunyan shook his head, the two braids flicked around like rattles, and said, "No, do you want me to eat it and then spit it out?" It's important, let's go to Liujia Village first. ”

"Yes!"

Where did Zhu Qi dare to disobey at all, although he didn't like it in his heart, he also pretended to be smiling and groaning on his face, and secretly waved his hand to the people below, and a small sedan chair was carried over not far away, although the sedan chair was small, but it was very exquisite, and it was more luxurious than the sedan chair of the average lady from a big family in Xiangyang Mansion.

"Girl, you can sit in a sedan chair."

"Forget it, forget it, forget it!" Chunyan waved his hand and said, "You are all hungry, go to the town and find something to eat, this girl is here to wait for you for a quarter of an hour." ”

"If the girl doesn't go, I won't go." Zhu Qi smiled, took out a string of money from his arms and handed it to his subordinates, and said: "The important matter of the prince and the county lord is important, you go to Zhenshan to buy some cakes, give the brothers a cushion, and when the matter is done, I will invite the brothers to a big meal!" ”

"Good!" The man took the money and ran out in a puff of smoke.

After eating, continue on your way.

Spring smoke is simply to drink a little water, not a drop of rice! On the way to Liujia Village, she was afraid of bumps, so she refused the sedan chair arranged by Zhu Qi, and she boldly drove a maroon red pony and walked slowly behind everyone.

After the snow melts, the post road is full of mud, the trees on both sides of the road do not have a leaf, the dry branches reach into the blue sky, and the old dead silence hides a full spring mood, but it has not yet erupted.

Beyond the two rows of trees, dead grass and mud mingle together, and the occasional bird burrows into it in search of food. The west wind blows, the face is cold, and the coming recovery brings a sharp spring cold.

Chunyan shook his body, wrapped the long coat tightly outside, reached out and patted the pony's back, and shouted softly, "Drive!" A small mountain village is already in sight. (To be continued.) )