Chapter 308

Although there is only one simple sentence that the researchers answered Chen Xin's question, what it means is the hard work of many people. Train city city is wildly beating gongs and drums in

, another city in Hunan Province, near Chen Xin's city.

The meteorite not only brought dust to block out the sun at night, but also destroyed the railway power supply lines all over the country, so that the country could only take out the old coal-fired steam car head and use it again, while most of the original electric locomotives were lying in their nests.

Although there are still some fuel locomotives that can be used, because of the shortage of fuel, all these locomotives that can move are deployed to the most critical places to be responsible for the transportation of the most critical materials.

But in addition, comrades on the railway front have been trying to restore railway capacity.

Now the train they are debugging is a new one specially researched and developed by Jianning's railway factory in order to restore railway capacity.

The car body of the train is specially designed for heat preservation, cold protection, frost resistance and wind resistance, which not only thickens the car body wall, but also increases the stability of the car body.

According to the original design index, the new car needs to cope with the strong wind of force 10 and the low temperature of minus 50 degrees, but now it obviously needs to face more severe challenges.

The factory workers adjusted and reinforced it, increased the counterweight for the car body, and replaced the insulation material in the car wall to ensure that it can still have enough insulation effect in the environment of minus 70 degrees.

Because this train is not only used to transport some valuable materials, but also an attempt made by the state to resume personnel transportation.

Before the disaster, Jianning was an important train production base in Yanguo. The locomotives produced here were also famous in Yanguo. Even the trains running on the important high-speed railway lines in Yanguo were mostly produced here.

Therefore, for the workers of Jianning railway factory, they are quite rich in both technology and experience.

In fact, before the disaster, they had developed a high-speed train that could still operate normally in the low temperature of - 40 degrees. Now they just optimized the technology.

However, after the disaster, the railway power supply network all over the country was destroyed, and the electric locomotives lost their power supply and could not operate normally. The original advanced electric locomotives were lying down, even if they were not damaged by electromagnetic pulse, they could not operate because of lack of power.

After all, the servicing weight of an ordinary trunk truck is as high as 240 tons, and the traction power reaches 9600kW. Without the surging power supply, it is impossible to move this giant.

So the focus of this new car's debugging is actually the power system of the front of the car, not the carriage.

Because it is no longer possible to supply power through transmission lines, it is necessary to let the front of the car generate power by itself.

This is a good thing to do. Whether it's coal or fuel, it can drive the steam turbine to generate electricity, so as to provide enough power for the whole train.

However, this time, the new train made by workers of Jianning railway factory is not powered by internal combustion engine, but by small nuclear reactor.

This is a nuclear locomotive.

The reactor used is the technology of Yanguo itself, which was originally used in nuclear submarines. However, due to the limitation of technology, its volume has not been able to be reduced, nor can it be applied to trains and civil ships.

Moreover, the tonnage of nuclear submarines ranges from several thousand tons to tens of thousands of tons. The reactor that can drive nuclear submarines is too powerful for a train. If you want to apply it to a train, you should not only reduce the volume, but also further reduce the power.

However, this is not an easy thing to do. Apart from the nuclear loading part of the reactor itself, the relevant supporting equipment will occupy a huge space. A cabin is specially designed on the submarine to provide a place for the nuclear reactor. It can be done on a large warship, but obviously the train can't do it. There is not such a big place.

But Chen Xin's isotope thermoelectric battery has given researchers a lot of inspiration and technical support. They have successfully miniaturized the reactor on the original nuclear submarine, improved the relevant technology, and successfully built a small nuclear reactor that can be installed on the train.

This reactor is not a traditional light water reactor, but a thermoelectric conversion type similar to isotope thermoelectric battery, which directly converts heat energy into electric energy.

Naturally, there are many advantages in doing so. The radioactive core can be completely sealed to prevent radiation leakage, because it only needs to transfer heat into electric energy, instead of injecting cooling water into the reactor to boil water to drive the steam turbine to generate electricity. Naturally, the former is more efficient in terms of energy conversion efficiency.

With such a small nuclear reactor, driving a train has become a very easy thing. Even a passenger train's traction power is more than 5600kW.

Because the general small nuclear reactor refers to the reactor whose output power is less than 300MW, 1MW is 1000kW, if you want to drive a train, only 10 ~ 15MW power is enough.At present, the output power of the small reactor installed on the new train is 35mW, which can not only drive the train itself, but also provide abundant power for the body for heating, lighting and a series of power needs, including deicing and obstacle clearing.

The project started three months before the meteorite fell, and the manufacture of the car body started at that time.

Other parts of the train have made rapid progress. The only restriction is the power system. It was not until Chen Xin provided the state with isotope thermoelectric batteries that the restriction was lifted, and the new train finally successfully stepped down the production line and was about to put into operation.

The first task of this new nuclear power train is to transport production equipment to Chen Xin's city.

It is the special train mentioned in what the researchers told Chen Xin.

Its successful operation is not only the improvement of railway transportation and transportation capacity, but also marks a more convenient and safe way of nuclear power application.

The power generated by the small nuclear reactor used on the train is enough to supply all the power of a small county before the disaster. In this case, if a city can have a small nuclear reactor, the power consumption of the whole city will not have to worry, and even the heating mode can be converted into electric heating.

The reason why Yanguo didn't do this before the disaster was that there were too many technical problems that could not be solved, and it was too late to build a new nuclear power plant temporarily, so it didn't use this way to supply power for the refuge before the disaster.

But now, with safe and reliable small nuclear reactor technology, Yanguo's top management will obviously not let go of such clean, efficient and convenient energy.

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