Han Du leaned over the long desk and worked all afternoon before drawing the required drawings.
He handed the drawing to Sun Xian, who had been by his side, and said, "Take it."
After saying that, he couldn't help but stretch.
He read Sun Xian's flattering drawings from beginning to end, and with Han Du's attentive explanation, he already knew what his husband wanted. At the same time, I have to admire Mr.'s whimsical idea in my heart, deliberately highlighting the axle of the eccentric wheel, using the axle with a smaller circumference to drive the larger wheel, and then using the axle of the larger wheel to drive the next larger wheel, and so on. Four times has completely amplified the effect of power.
Just using four big wheels increases the power by no less than a hundred times. Moreover, all of them were based on mechanics knowledge that Sun Xian thought he had already mastered. Sun Xian couldn't help but admire him.
At the same time, Sun Xian also made up his mind to delve deeply into various principles of mechanics in the future, at least to the point of being as whimsical as his husband.
With Sun Xian, a knowledgeable man, guarding the casting, the craftsman quickly cast what Han Du needed in just one day, and there was still time to polish it smooth.
The eccentric wheel was reinstalled, and the other four large wheels were also installed on something heavy like an anvil. The two wheels are connected with a lasso, one end is put on the axle, and the other end is put on the wheel. After it is put on, move the anvil to tighten the rope. The rope is tanned with hemp mixed with beef tendon, cowhide and extremely fine steel wire. It is wear-resistant and can withstand great strength.
When everything is ready, light the fire again and boil the water.
Since the eccentric wheel alone weighs more than a hundred kilograms, the response of the steam engine is very slow. It was completely different from the last time when the water started to move as soon as it boiled. The water had been boiling for a while, but there was still no movement.
Just when Sun Xian thought that the eccentric wheel was too heavy and the steam engine could not push it, the crossbar that had been waiting for a long time finally started to move slowly up and down.
As the speed gets faster and faster, other wheels are driven to spin.
At this time, Han Du pulled Sun Xian to the last wheel. He handed him a stick as thick as his thumb and said, "Come on, try it now and see if it's powerful."
Compared to the other wheels, this last one doesn't turn very fast.
However, after Sun Xian took the wooden stick and placed it in the middle of the wheel, the wooden stick did not jam the wheel. Instead, it was broken into two pieces by a slow but unwavering force.
Sun Xian clearly felt a huge force on the wheel and wanted to test it again. He even wanted to use a stick to jam the wheel to a stop.
But to his surprise, the wooden stick in his hand could not resist the power of the wheel. He felt like the wheel was running wild, completely out of his control. In other words, his strength was nothing compared to the wheel. No matter how hard he tried to stop the wheel, the wheel kept turning without even a moment's pause.
Sun Xian's face flushed with effort, and he finally gave up out of breath.
Throwing down the wooden stick, he looked at Han Du with admiration and said, "Sir, this is such a wonderful idea. This power is too great."
Han Du laughed with satisfaction.
At this moment, a loud popping noise was heard, and a large amount of white smoke suddenly appeared from the steam engine.
Han Du knew at a glance that there was a large amount of steam leaking.
Just after the steam leaked, the rotation of the eccentric wheel slowed down instantly, much worse than the previous speed.
"Here we go again." Sun Xian smiled bitterly. Seeing the confusion on Han Du's face, he explained: "Sir, I don't know, the student put a plug in the machine in order to seal it and prevent it from leaking, but this But plugs are very easy to break, and one won’t last long at all.”
Of course a steam engine would have a piston, that's common sense. Although Han Du has not dismantled the machine, but since it can be barely used, it means that it also has a piston inside.
The most important thing for a piston is air tightness, and it is not easy to maintain air tightness.
Han Du was very curious about how Sun Xian did it, "How did you do it?"
Sun Xian replied nonchalantly: "At first, the student just used an iron plug, trying to seal the steam like a teapot lid. But no matter how the student asked the craftsmen to polish the plug, the steam would leak out."
"Later, a craftsman reminded the students that they could use beef tendon, isinglass, and silk to mix and beat to make something of moderate hardness and softness, and then inlay it on the plug. Sure enough, after the student tried it, he was able to seal all the steam tightly. But this thing is very easy to be worn out, and once it is broken, it will become what it is now.”
Han Du understood that after all, Sun Xian had done a good job of sealing, but this thing was not durable. Han Du instantly thought of a durable and durable material, which was rubber.
But Han Du did not have rubber in his hands. Rubber was originally produced in the American continent. Han Du suddenly regretted that he had already arrived in the American continent, but he had not brought back such important industrial raw materials. He was simply going crazy.
At that time, Han Du was really disappointed and went crazy. As soon as he got the sweet potatoes, he wanted to fly back to the Ming Dynasty and let the people plant enough food to feed them for generations. Where else could they get it? Notice what's not rubbery?
But it was needed now, and of course Han Du regretted it.
Han Du looked at the machine that was steaming violently and said, "You can't build the machine like this. The piston is placed directly in the barrel. The temperature inside is the highest, and of course it is easy to burn it."
"What do you think, sir?" Sun Xian asked in surprise when he saw that Han Du seemed to have a solution.
Han Du stretched out his finger and gestured, and said: "Use an iron pipe to lead the steam out, and put the piston part outside."
"Sir, please give me some advice." Sun Xian quickly looked at Han Du with a longing look on his face.
Han Du also wanted to make a steam engine as soon as possible, so he agreed to Sun Xian without thinking.
In the next few days, Han Du stayed in the academy, studying with Sun Xian and others how to draw out the steam and redesign the piston structure.
First of all, since the steam has to be led out, the iron bucket does not need to be placed vertically, it can be placed horizontally. Putting it vertically not only increases the risk, but just adding water is a big trouble. Putting it sideways is different. First, the area for burning the fire can be larger, so that the water can be boiled in a shorter time and more power can be generated. Secondly, whether it is adding water or occupying land, it is much more convenient.
Then there is the piston structure. After several days of research, Handu abandoned the single cylinder structure and replaced it with a dual-cylinder structure. The function of the small cylinder on the top is mainly to adjust the opening and closing of the discharge hole, and to alternately release the steam on the left and right sides of the large cylinder below. The large cylinder below is the main source of power output.
The piston rod of the small cylinder extends out in a long way, and two buckles are made at special positions on it, one front and one back. The piston rod of the big cylinder is divided into two sections, and a protrusion is made at the end of one section. When it hits the buckle on the left, push the piston rod of the small cylinder to the left automatically to open the valve on the right side of the big cylinder; when it hits the buckle on the right, push the piston rod of the small cylinder to the right to open the valve of the big cylinder. The valve on the left is open.
In this way, the large cylinder is cleverly used to do twice the work back and forth, and the efficiency produced is naturally greater.
The other section is connected to the eccentric wheel, and it is enough to push the eccentric wheel to rotate as before.
Sun Xian admired the dual-cylinder structure designed by Han Du. The simple structure not only extends the use time of the piston, but also directly doubles the efficiency of the steam engine under the same consumption.
But even this can only temporarily extend the working time of the steam engine. If it breaks once and replaces it immediately at all costs, it will be barely usable. However, in this way, it is still impossible to universally use it.
If you want it to be durable for long-term use, you still need rubber.
So Han Du went to the palace to see Lao Zhu.
Lao Zhu took a break from his busy schedule today and was not reviewing the memorials. He hid in the imperial garden and drank tea with Queen Ma. This is not to say that Lao Zhu is lazy, but that he is indeed too old and lacks energy. Even if he wants to review memorials day and night like he did in previous years, he can't do it.
Now, as long as it is not an important memorial, he will leave it to Zhu Biao to handle. Only those who cannot make decisions without Zhu Biao will be sent to Lao Zhu.
Han Du was led over by the old eunuch. As soon as he entered the pavilion, he knelt down and bowed, "I pay my respects to the emperor and to the empress."
Before Lao Zhu could speak, Queen Ma became dissatisfied and said with a sullen face: "Han Du, I am not above the court. Why can't you call me Queen Mother?"
Han Du immediately realized that he had not been in the Ming Dynasty for too long and suddenly forgot about this incident. He hurriedly paid his respects again: "My son, I pay my respects to my father, and to my mother."
"Hmm~" Queen Ma narrowed her eyes and looked at Han Du with satisfaction, nodded and said, "Get up."
Queen Ma was the most satisfied with Han Du, the consort. It's not that Han Du's talents are far superior to other princes-in-law, of course this is also one aspect. But Han Du is a clean and self-sufficient person, and does not have those bad habits of Xun Gui. After marrying An Qing for so many years, I have never heard An Qing complain.
Moreover, Han Du once guarded a place like Jiaofangsi where there were so many beauties, but there was nothing wrong with him at all. This was quite rare.
Han Du didn't have any problem with this. Since he was married to An Qing, he naturally wanted to be devoted to An Qing. As for the people in the Jiaofang Division, they seemed to be the same as his former colleagues and subordinates. It's okay to tease her a little bit, but you never think about anything actually happening. Not everyone is keen on unspoken rules, and some people are very disgusted with them.
Lao Zhu slowly put down the teacup, glanced at Han Du and asked, "What do you mean you are so anxious to see me?"
"Father, if I want to go to sea, I will go to the sea again." Han Du said with his hands clasped in fists.
As soon as Han Du's words came out, Lao Zhu's brows sank heavily.
Queen Ma was also shocked and looked at Han Du in surprise. Seeing that Lao Zhu had not spoken yet, she had to suppress her doubts for the time being.
Lao Zhu paused for a long time before saying: "You just came back, what are you going to do?"
Han Du told Lao Zhu the progress of the steam engine and the importance of rubber, "Father, everything is ready for me now. All I need is the east wind. As long as there is a rubber steam engine, the world can be born."
Lao Zhu crossed his hands and placed them on his stomach. He leaned back and asked, "The rubber you are talking about can only be found over there?"
Han Du nodded without thinking and said: "I'm sure, I saw it when I was there this time, but I didn't think much about it at the time and didn't bring it back. Thinking about it now, I really regret it. and."
Queen Ma saw that Lao Zhu was deep in thought, obviously weighing. He quickly said: "How long have you just been back? Are you going to sea again? Do you know that the last time you went to sea for more than two years, Anqing was in tears all day long. Now, do you want her to continue like this? You too How can a person who has a son and a daughter act as recklessly as a young boy and not think about the people who care about you?"
Han Du knew that at this point, he was indeed in the wrong. He smiled apologetically and said: "It will take less than two years to go to sea this time. Erchen estimates that a little more than a year will be enough. In addition, Erchen wants to take Anqing with him this time. This is what Erchen promised. her."
"You want to take Anqing away too? No, absolutely not!" Queen Ma suddenly roared with dissatisfaction and directly rejected Han Du's idea. "How old is your daughter? How could you bear to have her leave her parents at such a young age?"
Han Du suddenly fell silent after hearing this. Indeed, Queen Ma was right. Her daughter was too young to take her on board the ship, so she could only leave him in the Ming Dynasty. But this means that the daughter will not be able to see her parents for more than a year, which is not a good thing for her.
Han Du, who had always acted decisively, couldn't help but hesitate at this moment.
Lao Zhu saw Han Du's hesitation and said calmly: "You have just come back. It is indeed not suitable to go to sea again."
"But..." Han Du couldn't help but become anxious when he heard that Lao Zhu disagreed. If Lao Zhu also objects, then there is nothing he can do. But Han Du knew full well how important rubber was. It can be said that without this thing, no matter how exquisite the steam engine designed by Handu is, it will be a consumption ghost. Not to mention not being able to do heavy work, he might die at any time.
"No but." Lao Zhu waved his hand and firmly dismissed Han Du's idea.
When Queen Ma saw the emperor's attitude, she immediately put her worries away.
Seeing Han Du's anxious look, Lao Zhu couldn't help but said: "You weren't the only one who walked the sea route there. Didn't Jiang Ming walk with you too? I thought it would be enough to let him take a trip. It’s not necessary, you have to go in person.”
This... what Lao Zhu said was really reasonable, and Han Du couldn't refute it for a while.
Empress Ma became even more happy, and persuaded Handu with a smile on her face: "That's right, the son of a rich man will not sit down in the hall. I know that you want to share the emperor's worries, but you don't have to do everything yourself, right? Jiang Ming also walked with you. It’s a sea journey and I’m familiar with it, so just let him go.”
After Han Du thought for a long time, he still said: "It's okay for Jiang Ming to go, but he probably doesn't know rubber. I'm afraid that even if he goes, he will return empty-handed."
"This is simple." Lao Zhu said without thinking, "Didn't you say you have seen it before? Just draw the pattern of the rubber and let Jiang Ming follow the drawing to find out."
"This... Okay." Since Lao Zhu said this, Han Du really couldn't find a reason to go by himself, so he just reluctantly agreed.
Since Lao Zhudu decided to let Jiang Ming go, Han Du saw that he had nothing to say, so he wanted to bow and say goodbye.
Lao Zhu clapped his hands, stood up suddenly, and said, "What does the steam engine you mentioned look like? I'll go and have a look."
Han Du originally wanted to wait until he got the rubber, but only after he succeeded did he ask Lao Zhu for instructions. But now that Lao Zhu had brought it up, Han Du had no choice but to follow the trend and said respectfully: "The emperor wants to see it. It is an honor for me and others."
Queen Ma also stood up and said with a smile: "What kind of novelty is it that makes you go to sea without even caring about your home? I will go and see it too."
Not only did Lao Zhu not object to Queen Ma, but he turned to smile at her and said, "This guy is able to offer a reward of one hundred thousand yuan, which must be very important. Today I will accompany my sister to broaden her horizons."
Han Du had no choice but to lower his head and accept, following Lao Zhu's imperial edict and heading towards the academy.
...
Lao Zhu dismounted at the gate of the academy and looked at the famous Three Hundred Questions of the Academy on the wall. A few of the Hundred Questions in Physics and Chemistry were answered. Mathematics was also solved four times, but these four questions were all solved by Han Jingyun alone.
The four glittering mathematical questions engraved on the stone tablet were like four natural chasms, which made the heroes of the world breathless. A few years ago, there were still people who were dissatisfied with Han Jingyun's identity as a woman and wanted to challenge her. In the end, just like Mr. Jin, they all bowed down.
Mr. Jin is even more wicked. He knows almost all of the people who challenge him, and there are several whose level is higher than him. In the past, when he wanted to compete with them, these people ignored him.
You used to be indifferent to me, but now I can't keep you from reaching your heights, but it's still very pleasing to see you being beaten to pieces.
Therefore, every time someone challenged Han Jingyun, Mr. Jin stood at the gate of the academy with his hands folded and a smile on his face. Seeing that the visitor was beaten to pieces by Han Jingyun in an instant, he doubted his life, and then he ran up and sprinkled some salt on him with gossip. And under his tricks of either provoking others or playing emotional cards, none of these people fell behind, and they all became teachers of mathematics in the academy.
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