Otaku Engineer in Great Tang Dynasty Chapter 1646: Xiao Lu 1 hand!

Human history has experienced three very important industrial revolutions. The first was in the mid-1860s. The technological revolution initiated from the United Kingdom was a huge change in the history of technological development. The steam engine was widely used as a power engine. Propelled the world from the handicraft era to the "steam era";

The second industrial revolution occurred in the last 30 years of the 19th century and the beginning of the 20th century. The focus of industry changed from light and textile industry to heavy industry. New industries such as electrical, chemical, and petroleum appeared. The world entered from the "steam age". Electric age";

The third industrial revolution occurred after the 1940s and 1950s, and major breakthroughs were made in the fields of atomic energy, electronic computers, microelectronics, aerospace technology, molecular biology, and genetic engineering, marking a new scientific and technological revolution Among them, the most epoch-making significance is the rapid development and widespread use of electronic computers, opening up the information age!

These three industrial revolutions are actually accompanied by a power revolution. From the first steam engine, to the internal combustion engine, and then to the electricity behind, each power revolution will bring more advanced productivity and make society’s production efficiency more efficient. A substantial increase!

Looking at the changes Li Zexuan made in Datang over the past year or so, we can see that he skipped the two processes of steam engine and internal combustion engine and directly launched the third power revolution in the original history-electric power. !

But although some things can be circumvented in a short time, they cannot be circumvented for a lifetime, especially things as important as steam engines and internal combustion engines. Human society does not mean that steam engines and internal combustion engines will be eliminated if electricity is available. Even in the modern society where electric power is developed in the 21st century, there are still active steam engines and internal combustion engines. For example, fuel cars on the streets are used. Internal combustion engines, such as thermal power plants, are still using steam engines!

These two things are the cornerstone of human productivity and are absolutely indispensable!

"Thermal power station? Shanchang, the book "Physics" says that magnetic energy generates electricity, but can fire also generate electricity?"

In the laboratory, after hearing Li Zexuan talk about the construction of a thermal power station, Li Tai was shocked and he was puzzled.

Li Zexuan smiled slightly and said: "Of course fire cannot directly generate electricity, but it can indirectly generate electricity through energy conversion, just like the Bahe Hydropower Station. Can you say that it is aquatic electricity? No! Because it is hydraulically propelled. The impeller of the waterwheel drives the rotor of the generator to cut the magnetic field lines, so electricity is generated! The same goes for this thermal power station~!"

Li Zexuan’s step-by-step and kindly tempting remarks greatly moved Li Tai. After a moment of silence, Li Tai said excitedly: "Mountain leader! I understand! You said earlier that all energy in the world is conserved, and it is Can be converted into each other! This thermal power station must also convert heat energy into kinetic energy, and then kinetic energy into electrical energy! Just like a hydropower station!"

Li Zexuan nodded in approval and said: "Qingque, you guessed right, this thermal power station is indeed similar to a hydropower station in nature!"

"The mountains are long, but fire does not flow like water. How to generate kinetic energy~?"

Li Tai was not complacent because of Li Zexuan's praise, but frowned and asked aloud.

"Well! This is the technical problem that thermal power stations need to overcome the most~! Qingque, bring paper and pen!"

Li Zexuan said lightly.

He wanted to take advantage of this opportunity to simply let Li Tai build a steam engine. Although according to his original plan, he intended to let the students discover the principle of power generation by steam, but now it’s time to wait, Datang and The national war between Turks is imminent, and the construction of telegraph relay stations and small thermal power stations is imperative!

Furthermore, there are skilled craftsmen, advanced machines, and rubber materials necessary for making pistons. The conditions for making steam engines are already mature. If this is the case, there is no need to hide them. Li Zexuan plans to Give the drawing of the steam engine directly to Li Tai!

"Yes! The mountain is long!"

Hearing that Li Zexuan was going to "turn on a small stove" for himself, Li Tai happily responded, and then quickly turned around to find a pen and paper. Soon, he took the pen and paper back to Li Zexuan's side and said respectfully: "Shanchang, give you paper and pen!"

"Hmm!"

Li Zexuan took it and placed the pen and paper on the experiment table. Without further ado, he started writing and drawing. After a while, he opened his mouth and said: "Green bird, have you ever seen a kettle boil the water? ?"

"Naturally I have seen it!"

Li Tae frowned. Although he was a little puzzled, he still answered.

"Hehe! That's good!"

Li Zexuan smiled, and then quickly drew a stove and a kettle on the paper. He gestured and said: "When the water in the kettle is boiled, the water vapor will push the lid to reciprocate up and down. Think about it, can we add some connecting rod transmission mechanism to convert this up and down reciprocating motion into circular motion, so as to drive the impeller of the generator to rotate and generate electricity?"

Hearing the words, Li Tai was stunned. Li Zexuan’s whimsical ideas opened the door to a new world for him. It made him brighten up and suddenly opened up. The doubts that plagued him before, this Time is all solved! As a result, his gaze at Li Zexuan couldn't help but become extremely admired. In his heart, although Li Zexuan is not a god, he is better than a god, because Li Zexuan seems to be omnipotent!

After a long time, Li Tai came back to his senses, and sighed with his palm: "Wonderful! Wonderful! Wonderful! Using water as the medium, the heat in the fire is skillfully converted into kinetic energy, so as to drive the generator to produce electricity. The idea is amazing!"

Li Zexuan smiled, but the pen in his hand did not stop. He continued to paint and said: "After you know the principle of thermal power generation, the most important thing next is to make machinery that can convert firepower into power. I call this a steam engine!

Look here, the steam engine is mainly composed of a cylinder, a base, a piston, a crank and connecting rod mechanism, a sliding valve steam distribution mechanism, a speed regulating mechanism, and a flywheel. In a steam boiler, the fuel combustion process makes water boil into steam. The water vapor is sent to the cylinder through the pipe. The valve can control the time when the vapor reaches the cylinder. It enters the spool valve chamber through the main steam valve and the throttle valve, and is controlled by the spool valve to alternately enter the left or right side of the cylinder to push the piston to move.

The steam pushes the piston in the cylinder to do work, and the cooled steam is introduced into the condenser through the pipe and re-condensed into water, thus forming a complete closed loop! "

Through a few simple schematic diagrams, Li Zexuan explained the general structure and operating principle of the steam engine to Li Tai. This little fat man has a good understanding, and he quickly understood what Li Zexuan explained. At the same time , He closed his eyes and began to conceive the specific structural model of the steam engine in his mind.

Seeing this, Li Zexuan did not interrupt Li Tai's meditation, and silently began to draw three views of the improved version of the steam engine on the drawing. Of course, he drew the improved version of the Watt steam engine!

Many modern textbooks (history books, physics books) say that Watt is the inventor of the steam engine. This is actually not prepared. In fact, the steam engine was independently invented by the British Saveli in 1698 and Newcomen in 1705. It was originally used for pumping water in mines, but its efficiency was very low.

In 1765, on the basis of repairing the Newcomen engine, Watt made major improvements to the steam engine, separated the condenser from the cylinder, invented the crankshaft and gear transmission, and the centrifugal governor, which modernized the steam engine. Improve the efficiency of the steam engine.

Even in the 21st century, many steam engines still use Watt’s technology. It is enough to show that Watt’s improved steam engine at that time is still very advanced and practical. At least for the current Datang, Watt’s improved version The steam engine is completely enough, and will set off the power change of this era!

Like Li Tai, Li Zexuan closed his eyes. A three-dimensional model of a Watt steam engine appeared in his mind quickly. However, unlike Li Tai, although Li Zexuan closed his eyes, the pen in his hand was Shaking rapidly on the rice paper, this is not just scribbling, but copying the three-dimensional model of the steam engine in his mind onto the rice paper!

Although the structure of the steam engine is not simple, Li Zexuan's martial arts strength has reached the late stage of the master, and his mental power is far beyond the past. There is no problem in building a steam engine model in his mind!

"Sa Sa Sa~!"

For a while~IndoMTL.com~Only the rubbing of the pencil tip and the paper can be heard in the laboratory.

About half a cup of tea, Li Tai finally recovered from his meditation. He opened his eyes and saw that he was shocked. God, what did he see?

I saw Li Zexuan drawing on paper with his eyes closed? Li Tai hurriedly went up and took a look, and saw that a neat, horizontal and vertical engineering drawing on the rice paper with dimensions and scales appeared on the paper from Li Zexuan's pen tip. Li Zexuan's pen tip turned so fast that Li Tai even I could only see a phantom, and then as Li Zexuan's pen nib turned, the lines of the engineering drawing on the rice paper gradually increased, and a steam engine model that looked like a substance was faintly formed!

Seeing this scene, Li Tai was shocked!

He knows how to draw and has drawn engineering drawings of this style, but when he draws, he uses a ruler to make gestures carefully, which is like Li Zexuan’s now, with his eyes closed and directly on the drawing." Trust the horse by the rein"?

That’s all. The point is that although Li Zexuan didn’t use a ruler to draw, the lines he drew were straighter than anyone else, and the proportions were more accurate than anyone else. Of course, the most desperate thing is that he The speed of painting is beyond the horizon, which is daunting!

This is the first time Li Tai has seen Li Zexuan draw drawings. Of course, this is also the first time Li Zexuan has shown his stunt in front of outsiders!

The scene of Li Zexuan closing his eyes tightly and swaying freely on rice paper is deeply engraved in Li Tai's mind, and it may be unforgettable for him for a lifetime!

…………………………………………