Chapter 2787: Full electric propulsion

"In our propulsion scheme, the engine must be placed behind the hull, so as to save the length of the drive shaft, and the chimney must be on the bridge, which leads to the complexity of the chimney, and the steam pipeline is also very long. There are a large number of reduction gears. If we adopt all-electric propulsion, the transmission shaft and reduction gear are eliminated. This facilitates the layout of the power system, and also allows a lot of space inside the ship." Qin Guan began to introduce the all-electric propulsion The advantages come.
"At the same time, this also facilitates the equipment of the power system. For example, for normal cruises, the power can be centrally supplied to the power system, and when fighting, you can tilt to the electronic system and give it what you need." Qin Guan said: " Especially big guys like our aircraft carrier can power electromagnetic catapults and electromagnetic arrest cables, and the ejection efficiency and recovery efficiency are much higher than that of steam catapults."
All-electric propulsion has been continuously applied in later generations. At the beginning, Niu Guoren promoted all-electric propulsion in an all-round way, just as they first promoted gas turbineization in the past. Even their own aircraft carriers have begun to adopt this scheme. , And Han Guo, when it came to the 055 large drive, it also began to try all-electric drives. This must be because all-electric drives have this unique advantage.
Convenient power distribution! Give energy wherever you need it. The distribution of electricity is much more convenient than the power distribution of a drive shaft.
Among them, the biggest problem is what Makarov said. This kind of energy conversion efficiency, high-power steam turbines, the conversion efficiency can reach 60 to 70%, and then transmitted to the drive shaft, about 100% It is about fifty, that is to say, the energy lost is fifty percent.
However, what if the all-electric drive is used?
First, the generator must be driven to generate electricity, and then the electric motor will be used to drive the propeller. In this process, even the energy conversion efficiency of the generator and the electric motor is as high as 70%. When the two are superimposed, that is 40%. Nine, the efficiency of the steam turbine has not been taken into consideration, so the total energy loss will be too much.
This is also Makarov's idea.
"Energy conversion efficiency, we can find the best working range of the power system, especially if it is first used on the destroyer, the efficiency may be improved if the gas turbine drives the generator." Qin Guan said.
For destroyers, the utilization rate of gas turbines is already very high. However, just like gas turbines used in tanks, this power system has a unique disadvantage, that is, there is no difference in fuel consumption between idle speed and full power operation.
You rotate at low speed, the output power is small, and the output power is high at high speed, but in these two cases, the fuel consumption rate is almost the same, which is definitely a shameful setting.
Many destroyers are faced with this problem, what is the method used? That is, when cruising, use other low-power gas turbines or diesel engines, and only use the main engine when you need to sail at high speeds, so there is a so-called diesel-fueled combination, a natural combination and other power solutions.
What if it uses all-electric propulsion? There is no need to have such a headache. If two high-power gas turbines need to be cruised, start one. The electricity from the generator directly powers the two tail motors to drive two propellers. When high speed is required, Turning on the other one will easily solve the problem. Electricity has unique advantages in the energy distribution scheme.
Therefore, this kind of scheme is also used in automobiles. When new energy automobiles become popular in the future, a unique kind of automobile, called extended range, comes out. This kind of car has a battery and an engine, but this engine does not It is not used to directly drive the wheels. The engine generates electricity. It can be said that it avoids the predicament of new energy vehicles without electricity. Laozi's inferiority generator!
So, is this farting with your pants off? Of course not. For ordinary cars, the driver is afraid that the engine will break and the accelerator is not dare to step on. The maximum is two thousand revolutions. In fact, this is not the range of the maximum engine efficiency. The maximum engine efficiency must be at least four or five thousand revolutions. This extended-range generator works in this range. Although there is a conversion efficiency problem, the engine has the highest operating efficiency. So overall, it is not a tasteless one, but when the battery is dead, the engine starts. At the time, because the speed is too high, sitting in the car, it is quite uncomfortable, similar to the tractor.
Qin Guan talked and explained to Makarov. Following his explanation, Makarov gradually changed his attitude: "So, are you already doing relevant research?"
"Yes, we are researching. After our research is successful, our 10,000-ton destroyer may be driven in this way." Qin Guan said.
A 10,000-ton destroyer? A 10,000-ton battleship must be called a cruiser, okay? Makarov immediately refuted.
Qin Guan could only smile helplessly. In fact, this is also the trend of large-scale warships. At present, the displacement of frigates is one to two thousand tons, and the displacement of destroyers is only three to four thousand tons. But, soon, the displacement of frigates. It has expanded to three or four thousand tons, and the destroyers are already rushing to the ten thousand tons class.
Of course it can be called a cruiser, but what's the use for that name? The argument of destroyers is more acceptable.
"So, do you want to build a cruiser like the glorious class?" Makarov continued to feel strange. When the Han people bid for the glorious class last time, they wanted to bid for the glorious class. Of course, Erxiong would not sell such a national treasure. Of it.
Now, is Han's own 10,000-ton cruiser of the Glory class?
Qin Guan shook his head: "We are still focusing on air defense and anti-submarine. As for anti-ship, we will mainly rely on carrier-based aircraft in the future. This kind of displacement warship can carry more vertical launch units and is more resistant to saturation attacks. ability."
The two rows of anti-ship missile launchers on both sides of the Glory class seem to be absolutely bluffing, but what's the use? If those spaces are used to place more air defense missiles, that would be good enough.
In fact, with the continuous advancement of vertical launch systems, anti-ship missiles can also be stuffed in. Therefore, versatility is the first requirement. Look at Xiong’s equipment. They are all specialized and not compatible at all. Their biggest flaw.
If you really want to buy it, the Kirov class is still good. This kind of special arsenal ship is proficient in all kinds of air defense, anti-ship, and anti-submarine. However, if you want to buy it, I guess there is no way.