I! Pretending to Be Reborn, Director of Doomsday Hoax

In a short space, hundreds of precision instruments are densely and regularly arranged, and hundreds of closed rooms are opened inside the precision instruments!

In the face of extreme cold, the gas in these closed rooms is the best weapon to keep out the cold, and it is also the most important guarantee to protect internal parts from freezing damage.

Xu Fu, who was obsessed with the research of nuclear energy difference machines at the time, was shocked when he saw the specific design ideas and structural arrangements of this system.

In the end, he left a sentence, "As expected of Director Xu who developed the nuclear energy difference machine, this level of complexity has the style of Director Xu", and he walked away.

Ji Chengping has had a headache for a long time.

"However, we promise that in the middle of this month, the ice-breaking head of the nuclear-powered train will be developed!"

"The high-temperature nuclear energy heat exchange equipment under the front of the car, the hot air injection and melting system for ice and snow roads, the snow water collection equipment, power generation equipment, and system controllers have all been installed, and the only thing left is the nuclear energy snow melting system in the ice-breaking blade!"

"Director Xu, we have conducted a test. During the driving process, the ice-breaking head can stably split the ice layer up to 20 meters thick. The split ice cannot be absorbed by nuclear energy for the time being, because there is no Install the collection system."

"However, the broken ice and ice and snow residues on the track have been cleaned up and reused by relying on the thermal spray melting system on the ice and snow road.

"Moreover, the air heating device installed on the train chassis and the water-absorbing roller system under the car body will remove the frozen areas and broken ice on the track."

Xu Qiu nodded in satisfaction.

The most difficult part of the ice-breaking car head is the design of the ice-breaking blade.

What Ji Chengping needs to find is not only a sharp ice knife that can break through the 90-meter ice layer,

Moreover, this icebreaker needs to be equipped with a nuclear heat dissipation system inside to maintain durability in the exchange of high temperature and extreme cold.

This is too high a requirement for materials, and it will definitely be the main direction of the Longguo materials department in the next period of time.

"Where's the bogie?" Xu Qiu asked.

The bogie is set between the car body and the track, and is used to pull and guide the vehicle along the track, bear and transmit various loads from the car body and the line.

It can buffer the force of action, and it is also a key structure to ensure the quality and safety of train operation.

In Xu Qiu's design, the bogie of the nuclear-powered Changlong is similar to that of ordinary high-speed rail, with wheel-to-axle box devices, frames, spring suspension devices, car body support devices, and braking devices.

Today, the laying of the extremely cold line is on the right track, and all regions will start the national mass production of extremely cold rails within these two days.

The bogie is a key component between the train and the track, so it is naturally indispensable.

Ji Chengping quickly replied: "Director Xu, in order to offset the Lixin acceleration when the train is not balanced, we increased the lateral component of gravity."

"On the bogie, in order to suppress the serpentine motion, we are further improving its dynamic performance such as stability, safety and smooth motion. At present, three bogies have stood out and will be tested one after another in the future!"

Ji Chengping has always been cautious in the development of bogies.

The reason is simple. The bogie is the running device of the nuclear-powered dragon, and it is also the core component of the nuclear-powered dragon. Bearing, guiding, buffering and shock absorption are all realized by the bogie.

"In addition to the bogie, what we focus on is the brake device."

"This thing also has a huge effect in the extremely cold era."

"At that time, our extremely cold steel rails may be wider than any place in the Dragon Kingdom. As far as I know, Director Xu designed the extremely cold route. There is a section from Luding to Mount Zhedo."

"In this road section, almost every kilometer has to climb 50 meters above sea level, and the total altitude difference is more than 2000 meters!"

"Moreover, the extremely cold steel rails will be very smooth due to the impact of freezing at extremely low temperatures!"

"In this case, if there is no braking device, it is impossible to perform good 3.5 braking on the train!"

"During the descent, the train encounters a huge block of ice, and the ice-breaking head collides with the ice at high speed, no matter how strong the ice-breaking head and the train are, they may suffer serious damage!!" In nuclear power In the design of Changlong, when it breaks the ice, its speed cannot be too fast.

Otherwise, the entire car body will be severely impacted.

The slow speed of breaking the ice, coupled with the huge weight of the nuclear-powered train itself, may concentrate all the pressure on the ice-breaking locomotive.

In this case, the difficulty of developing other carriages of the train can be slightly reduced, and at the same time, it can also bring better protection to the train.

Xu Qiu nodded and asked, "How is the progress?"

Ji Chengping replied respectfully: "According to your drawings, we have adopted a compound braking method of dynamic braking and friction braking. At the same time, it also includes the basic braking device system, regenerative braking and air braking control system. Under certain circumstances, we can even quickly condense the surrounding ice, freeze the wheels of the train, and forcibly increase the resistance!"

"For this reason, we redesigned the structure of the train to ensure that it is impossible to roll over!"

"Disc brakes plus electric power brakes, plus aerodynamic brakes, under the control of the microcomputer, our braking energy is already the most extreme braking ceiling that humans can achieve!"

Ji Chengping breathed a sigh of relief, and led Xu Qiu to the middle of the two compartments, where the connecting device is.

He went on to report:

"In addition, the vehicle connection device, our Nuclear Power Changlong Construction Department, is basically completed."

"The vehicle linkage is the easiest of all systems, including couplers, buffers and windshields."

"At the same time, there are electrical and air pipe connections between carriages, high-voltage electrical connections, auxiliary systems and train energy supply systems, control systems, etc."

The two huge carriages are connected together by five or six couplers that are as thick as an adult's arm. Moreover, the longitudinal gap between the connecting surfaces of these couplers is less than two millimeters, and the left-right deviation is also very small.

Xu Qiu frowned.

Although, the thicker the diameter of the coupler, the less likely it is to break.

However, under the conditions of extreme cold, as long as the coupler is still steel in essence, blindly increasing the diameter will only delay the time limit for damage.

This principle is easy to understand, just like adding firewood to a fire.

No matter how much firewood is added, it will only make the fire go out more slowly, but as the firewood is burned out, the fire will eventually go out.

The same is true for the coupler. The outer layer of steel is gradually damaged by freezing, and the diameter becomes thicker, which just makes the time for the coupler to be scrapped later.

If you want to fix it once and for all, you must find the problem at the root.

Xu Qiu shook his head, tapped the coupler, and said, "Ordinary high-speed trains use this device, right?"

Ji Chengping admitted: "Yes, Director Xu, our high-speed rail uses a close-fit coupler connection device to connect the carriages together!"

"We have tightly wrapped the coupler inside, and there is a five-layer thermal insulation system on the outside, and a thermal insulation design on the inside. In this case, it should be able to cope with the severe cold of minus two hundred degrees!" Xu Qiu nodded. : "This idea is correct."

"However, it can only treat the symptoms, not the root cause!"

"Even if we use the current extremely cold steel rails, it is impossible to guarantee that the coupler will not be damaged by freezing. In the nuclear power train, it will be the bane of all failures!"

Ji Chengping and Xu Fu looked at each other, not understanding the reason.

"Director Xu, your extremely cold steel rails can already maintain durability and cold resistance in the weather of minus [-] degrees. Why can't they be used on the couplers?" Ji Chengping asked, not understanding.

Xu Qiu broke off the coupler, turned to face Ji Chengping vertically, and said, "Old Ji, look carefully."

Ji Chengping looked suspicious, and said: "Director Xu, I saw that we have reduced the coupler to only about two millimeters. This gap is already the limit of current technology. It is almost impossible to reduce it any further.

Xu Qiu smiled and said, "The reason lies in this crack!"

crack?

What happened to the crack?

At this moment, doubts arose in everyone's hearts. .

Chapter 96 Connecting train, Berry country kite, weird and novel technology!

Xu Qiu explained: "The problem still lies in the airtightness."

"Old Ji, Professor Xu, you have to be clear at all times, it's an extreme cold of two hundred degrees below zero, an extreme low temperature close to absolute zero!"

"In this case, if you want to ensure the cold resistance of a machine, the most important thing is not to improve the cold resistance of the material itself, nor to install a thermal insulation layer, but to... airtight sex!!"

"Once the airtightness is lost and cold air enters the interior, even the most sophisticated machinery will be destroyed in an instant."

Ji Chengping was dumbfounded, looking at the two millimeter crack on the longitudinal surface of the coupler.

The carriages of the train are connected by couplers.

There is something similar to a hook in the middle of the train car, which is actually used to firmly connect the cars together. There are two such couplers in a car, which have the functions of connection, traction and buffering.Most of the trains in Longguo have generally installed automatic couplers.

To connect two carriages, first put the two carriages on the same rail, and then push one carriage with the front of the train to hit the other.

At this time, the knuckle tongues in the hook heads of the two carriages will be firmly connected together, and the hook locks will be closed and locked immediately, and special tools must be used to open them from the outside.There will also be some gaps between them, which is to allow a buffer time between the carriages.

And more advanced high-speed rail, subway, etc., use more advanced close-fitting couplers, which can make there are almost no gaps between the carriages!

The tight-fitting coupler is already a fairly developed connection method, is it still feasible?

Xu Qiu shook his head and said, "It's not about how big the cracks are, but whether there are cracks."

"As long as there are cracks, it is not qualified!"

Both Ji Chengping and Xu Fu were silent, they were thinking about how to connect the carriages without leaving any gaps.

Xu Fu thought of something, and tentatively said: "Scharfenberg coupler?"

This is an ancient technology. The Schaffenburg coupler was invented more than 100 years ago. Over the past 100 years, posterity has only continuously improved and perfected it.

Today, this type of coupler also provides fast and simple connection and uncoupling in contemporary times, and due to its modular structure, it has irreplaceable advantages in many aspects.

Xu Fu visualized the Schaffenberg structure in his mind, and said: "The center of each automatic Schaffenberg coupler is the hook lock, which is composed of a rotating hook plate, a connecting ring and a tension spring." "During coupling, the coupling ring of a coupler engages the coupling's coupling plate. This allows for a balance of forces."

"At the same time, this very simple operating principle ensures high stability even in extreme situations, providing maximum safety with minimum wear."

"Additionally, the conical and funnel-shaped design of the coupler front plate creates a rigid yet tight connection that virtually eliminates coupler play."

"Combined with the extension of the coupler head and the control angle, the coupler achieves the largest possible acquisition range."

"In this way, automatic couplings can even be horizontally, vertically or angularly offset!"

The basis of Schaffenberg couplers is the modular design.

It has three states, which are generation connection state, connection state and unhook state.

In the interlocking state, the front end of the coupler head is not bonded together, and the knuckle can be seen at the opening of the convex hammer.

When connecting, the special geometric shape of the hook plate makes the hook lock rotate against the action of the tension spring until the pin at the end of the knuckle snaps into the gap of the opposite coupler hook plate.

Then, the tension spring pulls the shackle back to its original position by turning it in the opposite direction, and remains attached to lock the part securely in place.

In the connected state, the front ends of the two couplers are close to each other, and the pin at the end of the connecting rod is stuck in the gap of the opposite coupler hook plate.

At this time, the force of the parallelogram forms a force balance, which produces a highly reliable and safe release connection, ensuring the comfort of operation and anti-climbing performance.

The uncoupling state is relatively simple. The hook plate of the coupler head rotates against the action of the tension spring under the action of external force, and the pin at the end of the connecting rod breaks away from the gap of the opposite hook plate, thereby completing the deconstruction in an instant.

Ji Chengping's eyes lit up, and he said: "Director Xu, this seems feasible, the Schaffenberg coupler head has a special design, even if the train is in curves, climbing, descending, traction, etc., it can be quickly deconstructed! During this period, there are almost no gaps!"

Xu Qiu did not express his attitude.