Hearing the word "sleepy oil" in Feng Xiaochen's mouth, Yu Chunan completely understood: this little director has real goods in his stomach, maybe Lin Bei Heavy Machinery is doing a trick this time, that Peng Haiyang is just a disguise, and the one who really has the ability is this young director who pretends to be stupid. Pen & Fun & Pavilion www.biquge.info

Hydraulic parts rely on liquid to transmit pressure, and the hydraulic oil is intermittently pressed from the low-pressure area to the high-pressure area under the action of external force, or is released from the high-pressure area to the low-pressure area, and there will be instantaneous pressure changes, which is called trapped oil. The reason for such a name is probably because in this process, the hydraulic oil is controlled in a closed cavity, like a trapped beast.

Trapped oil causes a torrent of liquid, which increases the temperature of the liquid, as well as some whistling sounds. In our daily lives, we occasionally hear the creaking of the water pipes in our homes, which is the result of the phenomenon of trapped oil, which is caused by sudden changes in the water pressure in the water pipes.

The problem of noise caused by trapped oil is common knowledge for future generations of hydraulic technicians. However, at that time, the noise problem was not taken seriously, so many technicians were not aware of this or did not study the problem in depth.

Before Feng Xiaochen came just now, Yu Chunan and several workers also talked about the problem of trapped oil, and everyone vaguely felt that the appearance of noise might have something to do with the trapped oil. But the specific part where the trapped oil appeared, and how big the impact was, everyone is still unsure. In addition, whether there are other factors that cause noise is also a topic of discussion, and everyone has some arguments.

Feng Xiaochen once presided over the localization of hydraulic parts in his last life, worked with many top technicians for a period of time, and also saw them dissect many kinds of hydraulic parts and evaluate various hydraulic parts. The axial plunger hydraulic pump that Yu Chunan and they are pondering is a traditional product that is widely used in the mechanical field, so Feng Xiaochen has also been in contact. As early as when Yu Chunan raised the noise problem, Feng Xiaochen had already remembered the conclusion of later generations, that is, the main source of noise of this piston pump is the trapped oil caused by the improper design of the oil distribution pan.

He didn't tell what he knew at first, because he wanted to find out what Yu Chunan and others were about. As a result, Yu Chunan and the others did not speak, but a Han Jiangyue came out to argue with him, and ridiculed him for not understanding technology. Feng Xiaochen no longer pretended to be low-key, and he decided to use his strength to win respect for himself.

"Yes, he is worthy of being the director of the big factory. He Guihua gave a thumbs up and praised Feng Xiaochen. Feng Xiaochen can say the word trapped oil, which proves his strength, you know, not everyone in the technical department of Xinmin Factory can say these two words.

"Bragging, right?" Han Jiangyue said in disbelief, she really didn't believe that Feng Xiaochen could know what trapped oil was, at least she hadn't heard of trapped oil before today, and she only heard Yu Chun'an talk about this when everyone analyzed the hydraulic pump together just now. She turned her head to look at Yu Chun'an and said, "Section Chief Yu, is this what you told him?"

Yu Chunan waved his hand and said: "No, no, I have never told Director Feng about hydraulic pumps, but Director Feng is well-informed and can see it clearly at a glance." ”

"I don't believe it. Han Jiangyue said stubbornly, "It must be where he heard it." ”

"Of course I heard it from somewhere else. Feng Xiaochen said confidently, "I'm not an inventor, how can I invent a new word." ”

"Even if you know ......"

Han Jiangyue was about to come up with another reason to belittle Feng Xiaochen, but Yu Chunan interrupted her words and said to Feng Xiaochen: "Director Feng, you just said that the symmetrical oil distribution pan will produce trapped oil, what is the asymmetrical oil distribution pan like, how can it solve the problem of trapped oil?"

Feng Xiaochen said: "The appearance of noise is due to the torrent caused by trapped oil. The solution to the problem is to design an unloading structure in the trapped oil area, so that the pressure transition of the internal oil chamber is as smooth as possible. Let's take a look at ......."

With that, he pulled over a drawing on the workbench, picked up the pencil on the drawing, and drew a schematic diagram for everyone:

"We designed a pre-pressure groove at the outlet so that the hydraulic oil is compressed in advance, rather than being pushed to the extreme all at once. Similarly, in the inlet position, a pre-expansion groove is designed to release the pressure of the hydraulic oil in advance. In this way, the process of pressurization and release is elongated, there are no transient changes in oil pressure, and therefore no torrent noise. ”

"Wonderful!" Ye Jiansheng patted his thigh, "Do it like this, the entire oil pump structure doesn't need to be changed, just change the oil distribution pan, it's very easy." ”

"It's really wonderful, you only need to make two bevels on the oil distribution pan, one positive and one negative. Hey, why didn't I think of it!" Yu Chunan said with joy and annoyance, he had also thought of the problem of trapped oil before, and had been using his brains on the control of the oil volume of the oil inlet and outlet of the oil distribution pan, and had not thought of the idea of designing the unloading groove. At this time, when he heard Feng Xiaochen say it, he suddenly realized that there was such a simple solution to this problem.

"Section Chief Yu, what he said is really useful?" Han Jiangyue pulled the corner of Yu Chun'an's clothes and asked in a low voice, although she was a rather smart young worker, she was far less familiar with the principle of hydraulic pumps than Yu Chun'an and several masters, so she couldn't hear whether Feng Xiaochen's opinion was right or wrong for a while. She couldn't help but be shocked when she saw that Ye Jiansheng and Yu Chunan were all talking about it, could it be that this annoying little director really came up with a wonderful plan?

"It's completely useful!" Yu Chun'an said affirmatively, "I have seen the idea of unloading the load groove in the past, but I can't contact it when I use it." Director Feng is really superb, and he can actually think of such a good method. ”

"Hmph!" Han Jiangyue snorted lightly again, and then looked at Feng Xiaochen's eyes, which was a little complicated.

He Guihua looked at the drawings, picked up the oil pan and looked at it, nodded and said, "I also think this is effective, Section Chief Yu, why don't we try it first?"

"Yes, try it. Yu Chun'an said, he rubbed his hands excitedly, his face was full of excitement, it was not at all the way when Feng Xiaochen saw him in the morning who owed him money. It seems that this benevolent brother is also a man of temperament, but he has become a stuffy gourd without meeting anyone worthy of his dealing.

"Director Feng, look at this pre-pressing angle, how many degrees are appropriate. Yu Chunan pulled Feng Xiaochen and asked in a tone of seeking advice.

Feng Xiaochen shook his head and said: "I'm not professional about this, what I just said is also what I see from the data, and I am not good at calculating the specific angle." ”

"Director Feng is so modest, if you don't have a spirit, then no one in our entire Xinmin Factory will dare to say that he is spiritual. Ye Jiansheng said in a flattering tone next to him. Previously, several of them were also very polite to Feng Xiaochen, but that was only because Feng Xiaochen was the director of the foreign factory, so they had to give some face. And now, Ye Jiansheng's attitude is completely sincere, this is the respect that Feng Xiaochen has earned with his own skills.

Yu Chunan didn't force Feng Xiaochen, he was born in a mechanical major, and he knew that calculations like this kind of could not be done casually, Feng Xiaochen said that he didn't know, and it was completely true. He stroked his forehead with his hand and thought for a while, wrote a few parameters on the drawing, and then handed it to He Guihua and said, "Master He, you first try to change an oil distribution pan according to this angle, and if there is an effect, I will make some more accurate calculations." ”

"Okay!" He Guihua agreed, took the drawings and walked out, and Han Jiangyue hurriedly followed. A milling machine is required to make a groove on the oil distribution pan, and the two of them went to the metalworking workshop. Fitter is a very comprehensive type of work, many fitters can operate the machine tool, sometimes some parts are defective, need to go to the machine tool to rework a little, some fitters are do-it-yourself.

In the morning, Feng Xiaochen saw Han Jiangyue open a milling machine in the metalworking workshop, it was not a strange thing, He Guihua's milling machine operation and lathe operation were more proficient than Han Jiangyue, even in front of the milling workers and lathes in the metalworking workshop, his technology could be ranked.

It took some time to process the oil distribution pan, so Yu Chunan sent Ye Jiansheng and Zou Sulin to work first, and accompanied Feng Xiaochen to the outside of the workshop. After standing still under the tree, Yu Chunan took the initiative to take out a cigarette and handed one to Feng Xiaochen.

"Thank you. Feng Xiaochen took the cigarette, took out a lighter from his pocket, and helped Yu Chunan light the cigarette before lighting it for himself. Feng Xiaochen in later generations did not smoke, and the smoking habit in this life was inherited from the possessed Feng Xiaochen. In normal times, he doesn't smoke by himself, but when he encounters social situations, he can also cope with them. In those days, it was important to smoke and drink without separation, especially in the factory, and if you didn't know how to smoke, the relationship with the workers would even be a little more estranged.

"Section Chief Yu, don't you need to be approved by the technical department to modify the design of the hydraulic pump like this?" Feng Xiaochen asked curiously.

Yu Chunan spat out a cigarette and said mockingly: "Wait for their approval, then nothing can be done." ”

"What do you mean by this?" Feng Xiaochen said.

Yu Chun'an said: "Director Feng ......"

"Section Chief Yu still calls me Xiao Feng. Feng Xiaochen interrupted Yu Chun'an's words and said. In the morning, he also asked for this, but Yu Chunan ruthlessly refused. Now he wanted to try it again to see if the technique he had just revealed could dispel Yu Chun'an's mustard against him.

Yu Chunan was stunned for a moment, then laughed and said, "It's okay, then I'll call you Xiao Feng." Don't be a section chief Yu, call me Lao Yu. ”

"Okay, Lao Yu!" Feng Xiaochen shouted without hesitation, Yu Chun'an's statement was obviously to regard him as his own, which was something Feng Xiaochen couldn't ask for.