Vol 2 Chapter 1646: Xiao Lu 1 hand!

There have been three very important industrial revolutions in human history. The first was in the mid-1860s. The technological revolution initiated from Britain was a huge change in the history of technological development. The steam engine was widely used as a power engine, prompting the world to change The era of handicraft industry has entered 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 industrial focus changed from light and textile industry to heavy industry. New industrial sectors such as electrical, chemical, and petroleum appeared. The world entered the "Electrical Age" from the "Steam Age". ；
The third industrial revolution occurred after the 1940s and 1950s. Major breakthroughs were made in the fields of atomic energy, electronic computers, microelectronics, aerospace technology, molecular biology, and genetic engineering, marking the arrival of a new scientific and technological revolution. One of the most epoch-making significance is the rapid development and widespread use of electronic computers, opening up the information age!
These three industrial revolutions were actually accompanied by a power revolution. From the first steam engine, to the internal combustion engine, and then to the later electric power, each power revolution will bring more advanced productivity and greatly increase the production efficiency of society!
Looking closely at the changes Li Zexuan has 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-electricity!
However, although some things can be bypassed in a short time, they cannot be bypassed for the rest of their lives, 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 with advanced electricity 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? Shan Chang, the book "Physics" says that magnetic energy generates electricity, but can fire also generate electricity?"
In the laboratory, Li Tai was shocked when he heard Li Zexuan talk about the construction of a thermal power station, and he was puzzled.
Li Zexuan smiled slightly: "Of course fire cannot directly generate electricity, but it can generate electricity indirectly through energy conversion, just like the Bahe Hydropower Station. Can you say that it is aquatic electricity? No! Because it is water power that drives the waterwheel. The impeller drives the rotor of the generator to cut the magnetic field lines, so electricity is generated! The same goes for the thermal power station~!"
Li Zexuan’s orderly and enticing 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 can be transformed into each other. Yes! 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 in nature to a hydropower station!"
"Mountains are long, but fire does not flow like water. How to generate kinetic energy~?"
Li Tai was not complacent about Li Zexuan's praise, but frowned and asked aloud.
"Well! This is the most technical problem that thermal power stations need to overcome~! Qingque, bring paper and pen!"
Li Zexuan said lightly.
He wanted to take 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 steam generation by themselves, but now it’s time to wait, between Datang and Turks. The national war is imminent, and the construction of telegraph relay stations and small thermal power stations is imperative!
Moreover, there are skilled craftsmen, advanced machines, and rubber materials necessary for making pistons. The conditions for manufacturing steam engines are already ripe. If this is the case, there is no need to hide them. Li Zexuan plans to directly use the steam engine today. Give the drawing to Li Tai!
"Yes! The mountain is long!"
Hearing that Li Zexuan was about 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: "Shan Chang , Give you paper and pen!"
"Ok!"
Li Zexuan took it and put the pen and paper on the experiment table. Without a word, he started to write and draw. After a while, he said: "Qing Que, have you ever seen a kettle boil the water?"
"Naturally I have seen it!"
Li Tai frowned, although he was a little puzzled, he still replied.
"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 boiling, the water vapor will push the lid to reciprocate up and down. Do you think Thinking, 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 this, Li Tai was stunned. Li Zexuan's whimsical thoughts simply opened the door to a new world for him. It brightened his eyes and suddenly became clear. The doubts that had plagued him before were all solved at this time. ! As a result, his gaze at Li Zexuan couldn't help becoming 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 can be subtly converted into kinetic energy, so as to promote the generator to produce electricity. Shan Chang, your idea is simply too That's great!"
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 care about it. Something is called a steam engine!
You see 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 control mechanism, and a flywheel. In a steam boiler, the fuel combustion process makes water boil into steam, and water vapor passes through The pipeline is sent to the cylinder, and the valve can control the time when the steam 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 condensed into water again, 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 With both eyes, I started to conceive the specific structural model of the steam engine in my mind.
Upon seeing this, Li Zexuan did not interrupt Li Tai's meditation, and silently began to draw three views of an improved version of the steam engine on the drawing. Of course, he drew an improved version of the Watt steam engine!
Many modern textbooks (historical books, physics books) say that Watt is the inventor of the steam engine, but 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 and greatly improved the steam engine. s efficiency.
Even in the 21st century, many steam engines still use Watt's technology, which 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 steam engine is completely enough. Use, and will set off the power change of this era!
Like Li Tai, Li Zexuan closed his eyes, and a three-dimensional model of a Watt steam engine quickly emerged in his mind. However, unlike Li Tai, although Li Zexuan closed his eyes, the pen in his hand was on the rice paper. Shaking fast, this is not just scribbling, but copying the three-dimensional model of the steam engine in his mind on 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 ~EbookFREE.me~ only the rubbing of the pencil tip and the paper can be heard in the laboratory.
After 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?
As you can see, Li Zexuan is 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 with size scales on the rice paper emerged from Li Zexuan's pen tip on the paper. 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 seemed like a substance was faintly formed!
Seeing this scene, Li Tai was shocked!
He can draw and has drawn engineering drawings of this style, but when he draws, he uses a ruler to make gestures carefully. How can Li Zexuan do it now, with his eyes closed and directly on the drawing to "believe the horse by the rein"?
That's all, the point is that although Li Zexuan did not use a ruler to draw, his lines are straighter than anyone else's, and the proportions are more accurate than anyone else. Of course, the most desperate thing is his drawing speed. It breaks through the sky and it is daunting!
This is the first time Li Tai has seen Li Zexuan draw drawings. Of course, this is also the first time that Li Zexuan has shown his stunt in front of outsiders!
The scene of Li Zexuan closing his eyes tightly and swaying on rice paper arbitrarily is deeply engraved in Li Tai's mind, and it may be unforgettable for him for a lifetime!
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