Chapter 447 Advanced Warship Power Supply Scheme and Concept of Electric Vehicles

  In the 1980s, the country opened up, and the country also saw advanced Western technology, which was very surprising. In terms of aviation technology, when seeing the landing of the French Mirage 2000 fighter, the domestic technicians and test pilots were extremely curious.

  The opponent didn't use the parachute, and just used the brakes to stop it!

When the plane lands, it has a speed of hundreds of kilometers per hour. If the domestic brakes are stepped on directly, the brakes will smoke and be scrapped. You must first use the speed parachute to slow down the speed of the plane before you can use it. brake.

  The French actually brake directly?

  When the brakes stopped, the domestic technicians touched the brake disc with horror on their faces, and found that the brake pads were not overheated!

  Technology in all aspects is far behind the world's advanced level. Seeing foreign technology is like grandma Liu entering the Grand View Garden. Although I know that I am behind, the technicians are not discouraged. If there is a gap, then catch up!

  The third-generation aircraft produced in China can no longer use the backward braking system in the past, and must develop a more advanced braking device!

  Ten years have passed, what level has the domestically developed products reached?

  Qin Tao is not very clear, but he knows that if he wants to solve the problem of the friction plate of the clutch, he has to start with the aircraft brake disc.

In later generations, the Yankee's F-35 project also required advanced lift fan clutches. Goodrich Company was responsible for providing friction materials. In order to research this technology, their company specially established a Santa Fe Springs high-temperature composite material group. , this group did not work behind closed doors, they also contacted the Troy Aircraft Wheel and Brake Group in Ohio and the Brecksville Materials and Simulation Technology Center in Ohio to work together to develop high-performance clutch materials with longer life.

  The Americans also use brake materials for research. For their own side, there is nothing to say. They also need to ask the department that researches aircraft brake materials for help.

  Wang Jinbao opened his eyes wide: "Mr. Qin, let's find a department that studies the brake system to cooperate? This is a good idea!"

  The plan proposed by Mr. Qin must be forward-looking. As long as you follow what Mr. Qin said, you are absolutely right!

  Wang Jinbao has already made up his mind, and after Mr. Qin leaves, he will find cooperation with relevant departments!

In fact, for them, if they want to produce this kind of lift fan, they have to travel all over the country to find cooperative units. The advantage of their machinery factory lies in the processing accuracy, but they are not the unit that studies materials, so they must Find the relevant departments to cooperate.

   "By the way, Mr. Qin, in order to bypass these complicated technologies, someone in our project team has proposed a new plan."

  New scheme?

  Qin Tao was very curious: "What plan?"

  If you want to achieve vertical take-off and landing, there are two options in the world, either the Sea Harrier or the Yak-38. Only these two have matured, and your own lift fan is only equivalent to the deformation of the Yak-38.

   "We can use the turboshaft engine of the helicopter to drive this lift fan, so that the length of the transmission shaft can be greatly shortened, and the clutch can also be cancelled!"

   Driven by a turboshaft engine?

  Qin Tao looked at Wang Jinbao in surprise: "Have you calculated it?"

Wang Jinbao nodded: "I have calculated that the largest helicopter engine in the world is the D-136 equipped with the Mi-26. This engine can burst out more than 10,000 horsepower. We use two to drive the lift fan. There's a backup, so in case one of the engines dies, the other will still provide some power."

  Being close to the water, the Mingzhou Group is equipped with Mi-26, so they can get all the above parameters, and they have made various calculations based on these parameters, and finally feel that there is no problem.

  Qin Tao shook his head: "I'm not talking about power, but volume! Where are you going to put these two engines? How to solve the problem of air intake and exhaust?"

  Wang Jinbao was taken aback.

  Of course he didn't consider these issues. In his eyes, this kind of issue is of course considered by aircraft designers.

"This kind of design is like farting and taking off your pants. It is not as good as the Yak-38 that directly uses the lift engine. It is also a turbo engine. Direct jet is enough, and it has to be transmitted through the transmission shaft." Qin Tao and everyone also said I am familiar with it, so I am not polite to say it: "Besides, adding two more engines will increase the procurement cost and increase the complexity of the system."

  Originally, Wang Jinbao thought it was a genius idea, but how could he know that there are still so many problems. Moreover, when Mr. Qin said this, he would be able to react. It is indeed a big trouble.

For an aircraft, every gram of weight has to be considered. Originally, the lift fan is already a dead weight in normal flight. As a result, two more engines specially used for the lift fan are carried on the back. This is really farting. Pants.

"We have no other choice. This path is the most correct. We must go down this path. So, come on! Even if we can only produce a clutch with a lifespan of three to five times, that is still an improvement. In the future, we will It can be continuously improved until it finally matures."

  The design of the lift fan is the most mature, because this method has the simplest structure, and any modification will make it more complicated, which will not do any benefit to the aircraft.

  Wang Jinbao nodded: "Mr. Qin, we know that we will definitely try our best to overcome technical difficulties and finally reach the other side of success!"

   "Well, you don't have to worry too much. We are mentally prepared for the technical difficulty. Our research and development can take at least ten years. Take your time."

   "Won't that delay our plane test flight?" Wang Jinbao was a little worried.

   "Don't forget, our aircraft has three types in one aircraft. If the lift fan is not mature, you can still fly the ordinary model first."

  Everyone breathed a sigh of relief.

Just as Qin Tao pointed out the research direction to the technicians of the machinery factory and encouraged them to continue working hard, Xu Zhengyang's mobile phone rang. When he finished answering the phone, he looked at Qin Tao who got up to have lunch with everyone: "President Qin, There was a dispute at the second design department, do you want to go and have a look?"

   Dispute?

  Qin Tao knows that among the technicians, all kinds of disputes are normal. After all, the truth is refuted. However, the improvement policy of the aircraft carrier has been formulated, so it is said that there will be no such disputes that need to ask for help!

   "Who is arguing with whom?"

   "The horsemen, and all."

  Qin Tao immediately understood that it must be the medium-voltage DC technology that can make Ma Gong and others confront each other.

   "Let's go, let's take a look." Qin Tao said: "This truth is all refuted. We can hear wonderful debates without talking."

  The second design office is also in Huating, so Qin Tao can quickly reach the meeting room. After entering, the scene is really exciting and intense. Ma Gong is fighting with the scholars all by himself!

   "At present, all the power supply systems we use for ships are AC. When the Varyag was designed, it was also 50 Hz AC. It is already very mature. We can't use the immature DC technology at this time!"

   The person who said this was an old technician who was in charge of designing the power system at the beginning, so he was very familiar with this system, and he would never agree to use medium-voltage DC.

  This is totally Luan Tanqin!

"That's right, your design is mature enough. Nine alternators are not needed all the time. Usually, only four engines work. When more power is needed, when the diesel generator is started to connect to the grid, the turbine How do soldiers operate?"

  How to operate? For engineers, this is definitely a nightmare! The grid connection of the alternator is very demanding, and the difference of 0.01 seconds will cause the entire system to burn down.

  Especially, the Kuznetsov and the Varyag, in order to increase the power supply, still use nine generators. If so many generators are connected to the grid, it is even more a nightmare within a nightmare!

   "However, if medium-voltage direct current is used for power transmission, the generator still needs alternating current, and the user also needs alternating current. It is too complicated to convert halfway!"

  In short, they are resisting, because this technology has never been used.

   "Complicated?" Ma Gong looked up at the top of his head: "Do you know what kind of electricity our current electric lights use?"

  Everyone shook their heads.

  Big guys use electricity every day, but they don't know how the electricity comes from.

   There seems to be no doubt about it, it must have come from the power plant!

"In October 1985, the Gezhouba-Huating DC power transmission project with a plus or minus 500 kV was started. The unipolar and bipolar were put into operation in 1989 and 1990 respectively. Bipolar 1.2 million kilowatts. Now, we have 11 power plants in Huating, with a total capacity of 4.6867 million kilowatts. The operation of this DC project is equivalent to providing us with 25% of the power supply, that is to say , now at least one of the four lights above our heads is powered by direct current."

  The West does not have EHVDC technology, because they simply do not need it.

  Domestic energy is mainly distributed in the west. For example, various hydropower stations are built in the west, and areas with highly developed economies are in the east. In this way, electricity needs to be transmitted from the west to the east.

  There is no need for this in Europe. It is almost equivalent to spanning the entire Western Europe. The area of ​​their country is less than the size of a domestic province.

  UHVDC transmission has various advantages, so it has been thoroughly researched and thoroughly conquered by the country, making domestic power transmission technology reach the highest level in the world.

   "What's the point of this?" Another old man asked.

   "I want to say that for our country, the various conversion equipment required for DC transmission technology are already mature!"

  The generator is AC, the user needs AC power, and the power transmission process is DC. In this process, the conversion between DC and AC will inevitably be involved.

  It is easy to convert AC to DC, and a few diodes can solve it. However, it is not easy to convert DC to AC. It requires special and complicated circuits. The conversion device in the ultra-high voltage transmission system has huge power requirements!

  Why do Yankees choose medium voltage AC technology? One of the big reasons is that they are not as easy to obtain a large number of conversion components as in China. When China is researching ultra-high voltage direct current transmission technology, it has already fiddled with these devices!

   This thing cannot be imported from the West, because the West does not have it.

   Ultra-high voltage of hundreds of kilovolts can be used, and medium voltage of several hundred volts is no problem, and it can even be simplified! After all, the insulation level has been lowered by several grades.

   "No, even with these devices, it will greatly increase the complexity of our system!" Another person said.

"Everyone, if you use the generator you mentioned, you need a set of complex reduction gears to reduce the speed of the steam turbine from several thousand revolutions to 300 revolutions, and it must be stabilized so that the frequency of the alternating current is stable. Isn't this system complicated? If we use our method, then these mechanisms can be omitted, the generator can directly rotate at the same speed as the steam turbine, and the auxiliary diesel generator is connected to the grid, that is, it is a matter of starting , which is more complex?"

  The horseman is not in a hurry, he is very confident in his system.

"I think you should be able to identify which solution is more reliable and simpler." Ma Gong continued: "Moreover, we have two generators to choose from. One generator is an AC and DC generator, which can be used at any time. Switching, the AC and DC come out directly through the generator, the other is a 12-phase generator, driven by the same engine, it can generate several times the power, only it can provide enough powerful power supply for our warships!" (Personally, this should be two kinds of generators. It is impossible to have a twelve-phase generator that can switch between AC and DC at any time.)

  The twelve-phase generator is divided into four three-phase electricity, and its frequency is constantly changing. If it wants to be used on an aircraft carrier, it must be rectified into direct current, so that it can be connected to the grid.

  The nuclear power plant built by the Mingzhou Group also uses twelve-phase generators, but three of them are directly used by shipyards and steel mills. Don’t worry about it. Only one group that supplies power to the public needs to consider the issue of grid connection.

  Of course, the nuclear power plants on land will not change after they are started, and they will continue to operate stably, which is not a particularly big problem. Of course, if they are all switched to output, maybe the load will be more balanced.

  The same power, but the output power is greatly increased. This is the unique advantage of the twelve-phase generator!

  Hearing what Ma Gong said, everyone swallowed a mouthful of spit. They couldn't refuse this temptation!

"Moreover, we have also developed a large number of DC-DC (direct current-direct current) conversion devices, which can directly convert medium-voltage direct current into low-voltage direct current. Various electronic equipment on our warships can directly use this power module. No need to re-convert to communication anymore.”

  Hearing what Ma Gong said, Qin Tao couldn't help it: "Ma Gong, that is to say, we have developed a mature DC-DC and DC-AC conversion device?"

   "Boss Qin, when did you come?" Ma Gong was very curious, wondering when Qin Tao came in. However, after saying this, he nodded quickly: "That's right, we have developed a military-grade conversion device, which is fully suitable for use on mobile devices. President Qin, do you have any ideas?"

  Qin Tao nodded: "Well, I have an idea. Let's discuss it in detail after this meeting is over."

   Ma Gong was a little curious, wondering if Qin Tao had any new ideas, but let's pay attention to this debate now.

  The truth has been made clear, can these people agree?

   It still depends on the person who makes the final decision.

  Babiqi is the chief designer of this modification, and he has the power to make the decision.

"Let's sum it up now." Babich said: "At present, the advantage of medium-voltage DC is that it does not need complicated grid-connected operations, the power of the generator is large, and there is no need for a reduction gearbox. The disadvantage is that this is our first Once used, I don’t know if it is mature, if it is not mature, causing the warship to trip frequently during use, it will be troublesome.”

   "I can issue a military order!" Ma Gong said firmly: "We have matured these technologies!"

   "Then, let's vote with a show of hands." Babbage said.

Qin Tao is a little helpless. In this field, the choice of the majority is not the right one. After all, the truth is often in the hands of the few. However, when encountering disputes, a show of hands is still a common method. After all This approach is in line with the golden mean.

   “A show of hands that agree to use the medium-voltage direct current transmission scheme.” Babbage said.

  The horseman raised his hand.

What about the rest?

  Others were obviously watching, and finally, people in twos and threes also started to raise their hands.

   "We have a total of sixteen people present, and more than half of them can pass." Babich said, counting: "One, two, three... six, seven."

  Only seven people raised their hands!

  Babbage shook his head, intending to deny this plan.

   "Do I count by raising my hand?" Qin Tao said, raising his hand.

   "Of course, Mr. Qin, you have deep insights into technology." Babiqi nodded: "In this way, eight people agreed, but the total number is seventeen, so it still didn't reach half, unfortunately..."

  The horseman's eyes showed disappointment, but at this moment, he was surprised to see an old man raised his hand.

   This guy, didn't you object just now?

   "I believe in President Qin. Since he thinks this plan is feasible, then I also support it." The old man said.

   Now, more than half of them are already there!

   Ma Gong was overjoyed.

   More than half, it means that his plan can be passed!

   This system is the first in the world, and it has been used on aircraft carriers since it came up!

  Of course, only the aircraft carrier needs it the most, because it has so many generators!

Frigates, destroyers, these warships don’t need a lot of power, so it is enough to drive one directly from the main engine, and at most one spare diesel generator is enough. It is definitely not like an aircraft carrier. The old man actually used nine power generators Even if it is simplified, our side uses four generators, which is quite a large number.

  Therefore, there must be an advanced power supply system. It is an inevitable choice to choose this medium-voltage direct current transmission technology!

   In the joy of the groom, Babbage actually raised his hand when he saw it!

   "I also agree to use this system. In terms of power supply for warships, you have finally grown up and are more advanced than ours. I hope to see the world's leading power supply system for warships!" Babich said.

  Although more than half of the proposals were passed, Babage raised his hand in an unusual sense, indicating that as the chief teacher, he had already approved this plan from the bottom of his heart.

  The horseman had a smile on his face.

   "Ma Gong, I also agree with your plan!" Another old man raised his hand.

  In the end, everyone present actually raised their hands!

  The horseman was very excited.

"Thank you for your support! We have been studying this power supply system for many years, and there will never be any problems. We must submit a satisfactory answer to the army and the motherland! The specific design plan will be released in the next month. In time, it will be completely perfect!"

   "Okay, now that the plan has been approved, is our meeting over? Do you want to have dinner?" Qin Tao asked.

  His stomach is really hungry.

   "That's right, let's go eat first."

   The dishes in the restaurant were already cold, and when everyone passed by, the staff in the restaurant reheated the dishes, and then brought them up again.

   Ma Gong asked Qin Tao while eating: "President Qin, you just said you have a new idea, what is it?"

   "I was thinking, our technologies are already mature, can it be used in cars?"

   "In the car?" The horseman was a little surprised: "How to use it?"

   "Install the battery on the car, drive the motor, and drive the body forward, so as to make a special electric car."

Ma Gong shook his head: "That's impossible, the energy density of the battery is too low, and the car can only drive more than 100 kilometers at most. When the car first appeared, it was powered by batteries, but it was replaced by an internal combustion engine later. "

   "But it's environmentally friendly." Qin Tao said: "You probably don't know that in the United States, General Motors is developing an electric car called Impact. This is a trend in the future."

Speaking of electric vehicles, everyone will think of the famous Tesla. It seems that this car has created an era. In fact, before it, General Motors was the first to engage in electric vehicles. Even, many of Tesla’s technologies, They are all transplanted from the impact car.

  In the 1990s, the impact car was in full swing, taking the high-end route, expensive, only rented and not sold, and strict review of the resume of the leaser made it a toy for the rich.

  In the end, after the changes in policies and regulations, General Motors ruthlessly abandoned this car and destroyed it all cruelly, which made countless electric car enthusiasts cry.

   Now, hearing Qin Tao mention this, Ma Gong frowned: "The future trend?"

   "Yes, since we have this technology, we may be able to produce electric vehicles. This project will definitely raise a lot of money. We can use this money to develop our other businesses."

   Raised a lot of money! Qin Tao's words are very important, this project is used to collect money! The money collected can be used to do many things.

   "Boss Qin, I will follow your instructions on what to do."

  Qin Tao nodded, just about to continue, Xu Zhengyang walked to Qin Tao's side.

   "President Qin, Ms. Vitalia has called and invited you to go to the capital as soon as possible."

  (end of this chapter)