Kai Fu Han

Chapter 392 Piston Rings

"Let Wu Chengye settle down and come back. You arrange for someone else to take over his place in charge of the listening work in the Zhongjing Road area of ​​the Kingdom of Jin. His own IQ is very high, and with the blessing of the four-star immortal magic, he is placed in the Kingdom of Jin as a spy. It's such a pity for the head." Liu Xinqi ordered.

"Yes, I will send him a letter when I get down." Xu Zhong replied.

"Is there anything else?" Liu Xinqi saw that Xu Zhong didn't stand up to say goodbye, so he knew that he probably hadn't finished his report yet.

"Previously, Mengli decided to build grain stores to the west of Jiaoshui to sell grain. Now grain stores in Weizhou, Mizhou, Qingzhou and Yizhou, which are closest to Laizhou, and Fuguo County have opened. Because the price of grain in the grain stores is higher than the market price The price of grain in other grain stores is ten cents lower per quintal, so sales are growing rapidly." Xu Zhongdao
"That's good. What happened?" Liu Xinqi asked.

"Di Ting investigated and said that the local grain merchants' counterattack has already begun. Some spies found that the grain merchants sent people to buy large quantities of our low-priced grains, and then our grain store manager immediately stipulated that each person can only buy ten kilograms of low-priced coarse grains per day. . But the grain merchants then hired a large number of idle people and lined up to enter the store to buy low-priced grain."

"Well, how to deal with that?"

"We don't have a complete household registration policy outside of Denglai, so there is no way to solve this strategy of grain merchants." Xu Zhong replied.

"Is the grain store currently open? Or is it closed?" Liu Xinqi asked.

"It's still open, but if it continues to be bought by those grain merchants, our grain reserves will not be able to support it."

Liu Xinqi lowered his head and thought for a few breaths.

"It's simple. You go to Liu Zhimu and ask him to find a paint for you. After this paint comes into contact with the skin, it cannot be easily washed. Then give it to those who queue up to sell food. Every time after selling food, put it on their arms or Put a stamp on the back of your hand. There can be a mark on the stamp to prove that this person has already bought grain today and cannot continue to buy it. I don’t believe that grain merchants can mobilize the people in the city to help them queue up to buy grain. If they really have this call If we use our strength, we can stop thinking about attacking these state capitals." Liu Xinqi suggested.

When Liu Zhimu was studying the printing of food stamps, he developed many pigments and dyes. Liu Xinqi knew a few of them. It was difficult to clean off the skin and took several days to shed and fade.

"However, even if we defeat this trick of theirs, there will definitely be a steady stream of tricks in the future. Should we just keep responding passively like this?" Xu Zhong was unwilling to give in. Such dirty tricks are really frustrating.

"Find out the mastermind behind the scenes, and then you will listen carefully and send people to talk. Those who are disobedient and stubborn will be dealt with." Liu Xinqi replied.Those who can do these things are definitely not serious businessmen. When the Xinghan League takes over this place in the future, these businessmen will also be suppressed. The difference is only sooner or later.

As for finding the mastermind, it was very simple for Di Ting.

These idle men definitely don't have the money to buy food all the time. The money must be distributed by the mastermind.Even the low-priced grain bought by these idle men will be collected by the mastermind.As long as there is money and food flowing, the mastermind can be found.

"Is there a bottom line for handling this?" Xu Zhong asked.

Liu Xinqi picked up the tea cup on the table and took a sip of tea to relieve the thirst in his mouth, and replied: "If the crime is not heinous, don't hurt people's lives."

"I understand." Xu Zhong responded.

After Liu Xinqi finished speaking, he considered that there was a shortage of manpower in all aspects and sent people to investigate whether these rebellious grain merchants were guilty of serious crimes, which was a waste of manpower. He rejected the previous arrangement: "It is difficult to define serious crimes and requires a lot of manpower to investigate. It is better to avoid harming human lives. For the bottom line.”

"What if they resist us with force? For example, send people to rob and destroy our food, beat and kill our employees." Xu Zhong asked. "Then let go and do it." Liu Xinqi is not a pedantic person. He must be ruthless when he should be ruthless. If he is not ruthless, he will not stand up.

"it is good."

……

Liu Xinqi never expected that it would be Wu Chengye who finally solved the leakage of the steam engine.

Moreover, the solution that Wu Chengye came up with directly surpassed oil cloth seals and rubber seals, reaching the pinnacle of material resources to solve chemical problems, so that all piston machinery in Xinghan League will not be troubled by sealing problems in the future.

"Just call him 'piston ring'" Liu Xinqi named this small object.

Liu Xinqi had never studied mechanical manufacturing or had any exposure to this kind of knowledge in his previous life, so he had been troubled by the sealing problem of the piston in the steam engine.

Moreover, Liu Xinqi led the researchers into overthinking. They only thought that sealing meant blocking and used various materials to block it. They did not think that they could seal themselves by relying on the pressure of the steam itself.

Piston rings are a practical application of leveraging force, and Wu Chengye is an extreme genius.

In reality, many inventions are like piercing paper. After they are pierced and invented, they will feel so simple. The same is true for the principle of piston rings.

Simply put, a piston ring is a metal ring embedded inside the groove on the outer wall of the piston.

A groove is carved into the piston wall, and then a piston ring is embedded in the groove. The thickness of the piston ring arm is smaller than the inner diameter of the groove, but when the piston is damaged in its natural state, the inner diameter is larger than the outer diameter of the piston.

The piston ring is a metal elastic ring with large outward expansion deformation, which is assembled into an annular groove (on the piston wall) corresponding to its cross section.The sealing is achieved by the close contact between the outward elastic force of the piston ring and the inner wall of the cylinder, as well as the close contact between the end face of the ring and the ring groove.

The piston ring is an ellipse in its free state and a perfect circle in its working state, thus generating elastic force.When the piston ring is inserted into the cylinder, this elastic force will cause the outer wall of the piston ring to be in close contact with the inner wall of the cylinder.This seals the gas leakage gap between the piston ring and the inner wall of the cylinder, which can be called blockage. It is the same principle as the "gas blockage" that Liu Xinqi thought of before.

The clever thing is that because the thickness of the piston arm is smaller than the piston groove, there is a gap above, below and inside the groove, which allows the piston ring to be easily installed into the cylinder.

Finally, there is the groove seal. Steam enters the cylinder and pushes the cylinder outward. The groove on the outside of the cylinder drives the piston to break. There is close friction between the piston ring and the inner wall of the cylinder. This force forces the piston ring to be in close contact with one side of the groove to form a seal.

After the high-temperature steam is discharged from the exhaust hole at the top of the cylinder, the pressure inside the cylinder decreases. The flywheel outside the steam engine rotates with inertia, driving the piston inward through the connecting rod. The friction force forces the piston ring to be in close contact with the other side of the groove, forming another seal.

Although the sealing is incomplete due to lack of precision, it is fully usable.Even if the steam engine is inserted into the cabin, people can already enter the cabin to operate it.

(End of this chapter)