Go back to the past and be a schoolboy

Chapter 265 Optimizing Tesla's Proposal
"Hey, Comrade Dean, it's your fault. Why don't you just leave after talking halfway? You haven't told us the specifics of this machine yet. It's not like you before. The shelf hasn't been set up yet. , the backbone can’t be withdrawn first!”

After discussing the next step of the Applied Engineering Institute's work direction, Cheng Nuo was about to close the pen and leave with his notebook. Unexpectedly, the comrades below were not happy, so they held him tight and refused to let him go.

"For example, you and Comrade Guo Shouchun cooperated with Comrade Guo Shouchun to set up the experimental fields for selection and breeding in the previous Agricultural College; and in the previous Chemical College, it was you and several comrades who worked overtime to make so many achievements. score."

Standing up and looking at everyone, Shi Jin made gestures and booed: "Now we are at our School of Applied Engineering, although we are led by the Dean of Tesla, and we have the efforts of our comrades... But we actually lack the leadership of Comrade Dean. Guidance of a genius' thinking, a bowl of water must be level."

Shi Jingang sat down here, and before Cheng Nuo could answer, Wu Yulin stood up and said, "That's right, although I know that the pneumatic machine that Comrade Dean said is an air compressor, but if you go deeper, it's basically an air compressor." Every step is trial and error, and the cost of trial and error is relatively high.”

"My old friend Thomas Alva Edison once said such a sentence, which was widely circulated." After his subordinates finished speaking, Tesla slowly said: "Genius is 1% of talent plus 99% of talent. Sweat, but that 1% of talent is the most important, even more important than the 99% of sweat."

"So what you want me to do is this 1% job?" Cheng Nuo sat down again and asked.

"1% of things is enough." Tesla looked at the other party and said confidently: "Sometimes it is not the 99% that determines the outcome, but the 1%, which is what you Chinese often say The meaning of 'a small difference, a thousand miles lost'."

Cheng Nuo was silent, and a sentence suddenly flashed in his mind and he blurted it out: "Some people have stepped into the threshold of the Tao, and they are only one step away from the Tao. If you enter, you will see the pure land, and if you retreat, you will enter the world. As hard as it is to reach the sky."

Looking at the people sitting below with earnest eyes on their faces, Cheng Nuo said slowly, "Forget it, then let's talk to you."

As soon as the words fell, Shi Jin and Wu Yulin trotted out, and not long after, they brought a blackboard from the yard. It was obvious that they had been prepared for a long time, and Cheng Nuo was both helpless and funny.

"Okay, I won't talk about the working principle of the pneumatic machine. Everyone knows this. It would be a waste of everyone's time to repeat it here." Wiping the blackboard, Cheng Nuo began to explain the technology:
"According to the working pressure, it is divided into high pressure, medium pressure and low pressure. According to the cooling form, it is divided into air-cooled and water-cooled. According to the cylinder arrangement, it is divided into vertical, horizontal, V-shaped, etc. According to the driving form, it is divided into electric motor drive, gasoline engine drive, Diesel powered..."

After a few words, Cheng Nuo basically explained the overall situation of the pneumatic machine, so that everyone had a basic understanding of the pneumatic machine.

Of course, when it comes to the specific techniques, Cheng Nuo actually doesn’t know much about them. The reason why he knows so much is because in his previous life, when he was surfing the Internet, he learned that an employee in Saitama Prefecture, Japan, was joked by his colleagues to use an air compressor to inject chrysanthemums into chrysanthemums. Inhalation, resulting in death.

Shocked, Cheng Nuo also gained a certain understanding of the air compressor. In addition, he just came back from Germany a few months ago and visited the workshop of Krupp Shipbuilding, and learned something from it. the air compressor on board,
It is mainly used to manipulate clutches, brakes, fill pressure water tanks, blow air whistles, blow and wash parts and seabed valves, etc.

In addition, the air press is a machine that consumes mechanical energy and must be driven by a prime mover, such as an electric motor or an internal combustion engine. There are more electric motors on board, which further deepened Cheng Nuo's impression.

"Hiss~ If we follow Comrade Dean's idea, which air compressor should we develop first? Or, in other words, it will help us the most?" Looking at the frame diagram above, Shi Jin wondered.

Cheng Nuo picked up the teacup, moistened his throat and said, "I want to hear Mr. Tesla's opinion first."

"Me?" Tesla was stunned for a moment, and after confirming that it was him, he unfolded the notebook in his hand: "At present, the air compressors are mainly piston-type, and the screw-type air compressors mentioned by Comrade Dean Zhang Gang are not mature enough. It’s unheard of in the world, so I recommend pistons.”

Cheng Nuo didn't take his subordinates' objections to heart. Instead, he continued to smile and asked, "Indeed, among the pneumatic equipment I brought from Germany, they are all piston-type. It's easier for us to cross the river by touching their legs." Quick, but there are many types of piston air compressors, does Mr. Tesla have a clear direction?"

The so-called screw air compressor refers to the twin-screw air compressor. A pair of intermeshing helical rotors are installed in parallel. The rotor with convex teeth outside the pitch circle is often called the male rotor, and the pitch circle is called the male rotor. A rotor with concave teeth inside is called a female rotor.

Generally, the male rotor is connected with the prime mover, and the male rotor drives the female rotor to rotate.Therefore, the male rotor is also called the active rotor, and the female rotor is also called the driven rotor.

Compared with the piston air compressor, the screw air compressor has the advantages of small size, light weight, small vibration, long life, no pulse exhaust, relatively pure and easy installation and maintenance.

However, at present, Cheng Nuo basically only knows about this technology, and it is difficult to learn about it and successfully develop it.

After much deliberation, it can only be put on hold temporarily, as one of the directions of the future technology tree of the Institute of Applied Engineering.

Feeling the pressure from Cheng Nuo, Tesla bit his lip, wrote and drew in his notebook, and finally drew a circle on it heavily and said: "My personal suggestion is to focus on the low air compressor first."

Cheng Nuo was not in a hurry to express his opinion, but asked with a smile, "What's the reason?"

"Can I borrow the blackboard?" Tesla stood up, looked at Cheng Nuo and asked, "If you write down some situations, everyone may read them more carefully."

"Of course." Cheng Nuo stepped aside and wiped the blackboard clean.

After exchanging positions, Tesla drew pictures and listed data on the blackboard while talking freely: "This machine is a V-type, double-cylinder, two-stage, air-cooled, mobile, piston air compressor. The equipment consists of an air compressor, an air storage tank and an electric motor...

Calculated as a whole, it is estimated that the displacement of the air compressor can be 0.1 m/min. Since the air pressure of this machine is not large, it is generally used for spraying paint, spraying pesticides, inflating tires, etc. If the air volume is larger, it can be used for more It can be used together with several air compressors, that is to say, multiple machines can be collected at the same time in the mine. "

It didn't take much time for Tesla to almost draw the structure diagram of a complete air compressor, and even attached various data, such as exhaust pressure at all levels, cylinder diameter, piston stroke, etc. can be put into production.

Looking at the full blackboard, Cheng Nuo sincerely felt the horror of a true genius. It was incredible that such an achievement could be achieved in such a short period of time.

It's a pity that this has not met Cheng Nuo's request.

"Mr. Tesla's design is very ingenious, and the operability is very good, but we are mainly using it in heavy industry now." Cheng Nuo stood up and walked to the blackboard, took the red chalk and gave the data in the column of exhaust pressure to the circle Live: "The exhaust pressure is lower than 8 kg/cm, which already belongs to the category of low-pressure air compressors.

Although we also need this, it is just not an urgent need, because its potential is limited, just like its main functions are mostly limited to pneumatic tools, sprays, chemicals, etc., and it does not match our main needs. "

Tesla wanted to argue at first, but when he thought about it carefully, when it was applied to mining and metallurgy, it would indeed cause a lot of unnecessary troubles to use multiple air compressors together.

"So we have to start the design from the medium pressure." After thinking about it, Tesla said decisively: "It's better to jump directly to the high-pressure air compressor. I believe that our demand for raw materials will only increase in the future."

Cheng Nuo laughed and said, "That's right, maybe even if we make the design bigger, it won't be enough in the end."

With that said, Cheng Nuo called Shi Jin and Wu Yulin to come over and move the blackboard.

Shi and Wu thought they were going to help clean it up, so they just asked each of them to take a blackboard eraser and start gesticulating on it. Fortunately, Cheng Nuo stopped them: "Hey, hey, what are you two big brothers doing?"

The two looked at each other, and then wondered: "Didn't you ask us to wipe the blackboard clean? That's what we're going to do now!"

Seeing that the two of them didn't seem to be lying, Cheng Nuo hurried forward to stop him: "Who said I asked you to wipe the blackboard? If I really wiped the blackboard, I could do it myself."

Shi Jin was puzzled, "No...then what do you mean by asking us to come up?"

Cheng Nuo shook his head helplessly: "Mr. Tesla's design is fine, but it's not what we want now, but it doesn't mean it's worthless in the future. Of course, I asked you two to turn the blackboard around , so I can transcribe it later!"

The two looked at each other, both a little embarrassed, and hurriedly turned the blackboard around.

However, after this little episode, Cheng Nuo's later narration was much faster. The proposed solution was an L-shaped piston air compressor, which was mainly used for supplying pneumatic tools, pneumatic machinery, mining, civil engineering, machinery, etc. Manufacturing other pressure requirements in industrial sectors where high air compression is required.

In order to improve work efficiency and extend working hours, the cooling method was even changed to water cooling. The cooling water enters the intercooler from the main water inlet pipe first, and when it comes out, it is divided into three paths, respectively entering the primary cylinder, secondary cylinder and oil cooler, and then Discharge through the main drain.

Although Cheng Nuo's design was so unreasonable during the period, it was difficult to achieve with the current technical level, but after everyone's brainstorming, the outline of this high-pressure air compressor gradually became clear, and its possibility became higher and higher.

When he finally got the complete and operable design book, Tesla sincerely praised: "Comrade Dean, I think you are more suitable for this position in the Institute of Applied Engineering than I am, why don't you continue to serve concurrently, so I can concentrate on it. to the practical work."

After finally having a relatively rich time, Cheng Nuo can do more work that he thinks is instructive, so why would he want to return to the previous life where he asked himself all the trivial matters.

Without even thinking about it, Cheng Nuo shook his head again and again: "Mr. Tesla, you are definitely worrying too much. During the time you were the dean, didn't you also come up with a radio station that caught the attention of the Beiyang government? Although the money is not 20 There are so many, but it is enough for your college's scientific research funding for a long period of time.

What does this prove?Prove that you can not only do both jobs, but do them well. "

There was still some hesitation on Tesla's face: "But although a compressor of this level has been designed, it involves the manufacturing process. There is still some pressure on our side. I am afraid that we will not be able to take care of the time."

Cheng Nuo was prepared for this, and replied directly: "This is simple. The lathes from Germany are given priority to your college. There are many things in it that some companies in the United States do not have. Now they are all supported by you."

After getting this result, Tesla's face was beaming immediately, and he repeatedly assured that the working principle of the air compressor is very simple, they have the foundation and technical reserves for the motor, the gas storage tank is made of high-quality materials, and the aftercooler is not too difficult. The air filter is nothing to worry about, and the compressor with the largest head has been taken down.

All in all, in a word, in a word, the odds of winning are in hand.

Seeing the other party's full of confidence, Cheng Nuo unconsciously felt weak, and quickly told him not to talk about it on paper, but to disassemble the machine purchased from Germany first, and then independently innovate after successfully completing the reverse engineering.

Watching Tesla go away, Cheng Nuo stood in front of the blackboard again and silently looked at the content on it.

This air pressure can be used not only in iron mining, but also in coal mining. It only needs to add steam boilers, generators, drainage cylinders, hoists, conveyors and exhaust fans, and it can be used in coal mining, ventilation, support, drainage and Transportation and other operations should be dominated by mechanical operations, and the mechanization of mining will be realized in this era.

Cheng Nuo and the others were getting closer and closer to the goal of full mechanization.

"Hey, Zhiyuan, why haven't you left yet? You're still here in a daze."

Just as Cheng Nuo was deep in thought for a moment, Shi Jin suddenly turned back and was very curious to see Cheng Nuo's appearance.

"Oh, there are a few statistics that I think there is still room for improvement, so I want to continue to think about them when I have some ideas." Cheng Nuo pinched his chin and looked at the blackboard. When he saw someone coming, he asked, "Why did you come back again?" gone?"

"Didn't I forget my hat? I suddenly remembered it halfway through the walk." Shi Jin shook the hat in his hand, leaned over to see the blackboard, and was a little curious: "But what do you see now is that low-voltage machine?" Wasn't the pneumatic machine eliminated from the beginning?"

Cheng Nuo nodded, shook his head again, and said thoughtfully, "I was thinking, isn't this thing unusable now?"

"Where can it be used?"

"Like the School of Chemistry."

(End of this chapter)