Wan Ming 380_Wan Ming full text free to read_Chapter 380 Economic Use of the World (Part 2) from b1 3kan.com/b()
"How is the research and development of the generator going?" Early that morning, Wan Lei came to Chongdaotang's headquarters in Beiping City. [b1 3kanwang/b high-quality update] This place has been expanded, and several buildings are enclosed within the tall walls. There are ten acres of inner courtyard, and buildings as big as ten are built in the courtyard, which serve as the living and study place for hundreds of Taoist priests in Chongdao Hall.
As the most advanced and secret research institute, the security inside and outside Chongdao Hall is the tightest. There are troops patrolling outside the high walls, and elite guards stationed inside the high walls. There are really ten steps on the first floor and five steps on the first floor. If anyone If you want to lurk in, you will definitely end up dead.
The Electrical Energy Research Institute is located underground in a high-rise building. There are currently about forty researchers, led by Chicheng. Their main research project now is: generators.
Chongdaotang has long been able to assemble a hand-operated DC generator. The structure of this generator is very simple. A base holds the stator, and the stator is composed of two annular magnets. One of the two magnets is made of copper strips. The rotor is also connected to a commutator to output DC current.
In fact, in terms of structure, there is no difference between a DC generator and a DC motor (motor). It is just that the DC generator is driven by other machines, so that its conductor coil rotates in the magnetic field, constantly cutting the magnetic flux lines, and generating induced electromotive force. Convert mechanical energy into electrical energy, while a DC motor reverses this process.
The principle is simple, but it is very difficult to increase the power generation and ensure stable output. Chongdaotang sent more than 40 people, and after several months of research, there was only a small breakthrough. Invented not long ago The ring armature (rotor) can only get a few kilowatts of power output, and the voltage is not stable, only about a few dozen volts. It is barely enough to be used as a power supply for a telegraph machine. If you want to use it to light a lamp or use When it comes to gold management, it's just a drop in the bucket.
"This is our latest designed and invented generator. It is different from the experimental hand-cranked generator. Its stator no longer has magnets, but a stator iron core and wire wrapped windings. The rotor is made of a rotor iron core. , the rotor magnetic poles, which include magnetic yoke and magnetic pole windings, that is to say, it is the rotor that generates the magnetic field." Chicheng pointed to a huge machine on the ground and introduced.
"This generator is the same as the experimental hand-cranked generator. The stator and rotor of the generator are connected and assembled by bearings, bases and end covers, so that the rotor can rotate in the stator. The difference is that through A certain excitation current is passed through the slip ring, causing the rotor to become a rotating magnetic field, and the stator coil moves to cut the magnetic lines of force, thereby generating an induced electromotive force, which is drawn out through the terminals and connected in the loop, thereby generating a DC current."
"In principle, the magnitude of the induced electromotive force generated by this generator is proportional to the magnetic induction intensity of the stator magnetic field and the rotation speed of the armature. Therefore, as long as we properly adjust the torque and the structure of the surrounding coil, we can greatly improve its Power. However, after the power is increased, it must be driven by high-horsepower machinery. In order to drive this generator, we used a fast-speed, high-power steam engine as the power source."
Wan Lei looked at the steam engine next to him. It had started to light a fire and was preparing to drive the generator to generate electricity. He said, "Try it out and see how high the output power is."
"Sir, we did a trial run yesterday. The maximum output power was 25 kilowatts, and the voltage balance was set at 230 volts. Since the voltage is relatively low, a lot of power will be lost if it is transmitted over long distances, so we are also Find another way to generate electricity," Chicheng said.
"If it's alternating current, you can use a transformer with a simple structure to raise and lower the voltage. However, the structure of the alternating current generator is more complicated. Don't worry about it for now. Let's fix the direct current generator first. We don't have the ability to build a power grid yet, it's just a small-scale one. When using it, there is no need to consider transportation issues.”
While Wan Lei was talking to Chicheng, the steam engine had begun to rotate, driving the generator to start rotating at high speed. A harsh buzzing sound came out, and Wan Lei had to plug his ears with earplugs. Around the generator The workbench is filled with various small machines for detecting current and voltage, and every researcher is observing and recording nervously.
After about half an hour of operation, all the researchers made a gesture to indicate that the recording was completed. The personnel next to the steam engine stopped adding coal and opened the brake to release the gas. Soon the generator stopped. Wan Lei saw hot gas on the generator. If it's hot, it must be overheating because it doesn't have a cooling system.
"Sir, it has been measured that the maximum output power is 54 kilowatts, and the voltage is rated between 215 volts and 250 volts." Chicheng handed over the summary data.
"Well, not bad, it can barely be used. However, I recommend installing a cooling system, otherwise the generator will overheat and burn out if it runs for a long time." Wan Lei reminded.
"We have thought about this and plan to install a cold water cooling system or a fan exhaust system. At the same time, most of the materials used in this generator are high-temperature resistant materials. High temperatures of 10 degrees Celsius have no effect at all." Chicheng said. .
"Okay, let's use this generator as a prototype to assemble a thermal generator. I'm going to use it to build an electric arc furnace for metal smelting."
In fact, the main reason why Wan Lei engages in electricity research is not for lighting lamps, but for metallurgy, because only by smelting metals with better properties can we build more sophisticated mechanical equipment, and many special steels are mainly produced by Use electric arc furnaces for refining.
The so-called electric arc furnace is actually an electric furnace that uses the high temperature generated by the electrode arc to smelt metal. Since the temperature generated by the electric furnace can be as high as 3,000 degrees, the electric arc furnace does not need to use coal as a heat source, and it is sealed and can be better controlled. The atmosphere in the furnace can effectively remove harmful impurities such as sulfur and phosphorus, and can effectively control the furnace temperature to smelt high-quality alloy steel.
In addition to steelmaking, some metals such as manganese, copper, gold and silver can also be smelted with electric arc furnaces to improve smelting efficiency, and the production of metals such as aluminum and sodium requires the use of electrolytic furnaces. In short, electric energy plays an extraordinary role in the metallurgical industry, Wan Lei He would not foolishly use hard-won electricity to light lamps. After all, kerosene lamps are enough now. Inventing electric lamps before the internal combustion engine was invented would only put the oil industry in trouble. Wan Lei would not do such a stupid thing. thing.
Besides, the electric light is not easy to invent, so a large-scale power grid will not be built for the time being. Even if a power station is built, it will be dedicated to transmitting power to designated factories. Even Huayuan, where Wan Lei lives, has no power transmission access. plan.
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