That night, Geng Zhiyuan and Yu Qinghe got on the return train. I slept on the hard sleeper all night, and at seven o'clock in the morning the next day, the train arrived at Jingzhou Station.

After returning to the project team, the two immediately threw themselves into the hot design work. Time flies, and before you know it, autumn is getting stronger, and the time has come to the end of September.

Most of the design work of the benzene recovery and toluene recovery sections in charge of Geng Zhiyuan has been completed, and it is estimated that it will take another half a month to complete. The stress analysis calculated about 178 pipes, and C2 became more and more proficient in using simulation methods such as correlation nodes and additional displacements for the first time.

Since most of the pipes for stress calculation in the TKM project are large-diameter gas-phase pipes drawn from the top of the tower, the spring frames used are not only large in number, but also in various forms, which greatly enriches Geng Zhiyuan's experience in using spring frames.

One day, Geng Zhiyuan was busy with statistical materials, and Xiang Chen suddenly found him with Mr. Chen.

"This is Geng Zhiyuan, a stress analysis engineer in our hospital. Xiang Chen pointed at him and introduced.

Mr. Chen took the initiative to stretch out his hand and said, "Hello, Geng Gong!"

Geng Zhiyuan hurriedly stretched out his hand and held it tightly with him: "Mr. Chen, hello!"

Xiang Chen was surprised when he saw Geng Zhiyuan, and explained with a smile: "Mr. Chen heard that there are stress analysis talents in our hospital, and I want you to help them analyze an accident. ”

"Analyze the accident?" Geng Zhiyuan wondered, "What accident?"

Mr. Chen carefully explained: "Our company also has a design institute, a while ago they designed a steam pipeline safety valve jumped, the result of the safety valve together with the outlet pipeline was knocked down, we want to ask Geng Gong to help analyze what is the cause." ”

"This ......" Geng Zhiyuan had a headache, he had not yet mastered the analysis and calculation related to the safety valve, but since Xiang Chen had brought the owner to him, he couldn't shirk it, otherwise he would lose Xiang Chen's face and ruin the reputation of the design institute.

"Okay, but I don't have a lot of experience in this area, so I can only give some insights for informational purposes. Geng Zhiyuan said vaguely.

"That's okay!" Mr. Chen said happily: "Geng Gong is too modest, our company's design institute has not studied for a month and has not come up with a result, so I have to trouble you." ”

The big words have already come out, and even if Geng Zhiyuan can't do it, he can only rush the ducks to the shelves: "Okay, Mr. Chen, can you probably tell me about the situation?"

"Dean Li, you tell Geng Gong about the situation. Mr. Chen beckoned, and a blonde and blue-eyed beauty flashed out from behind him.

Geng Zhiyuan was dumbfounded, the design institute of Jingzhou Petrochemical Company was so good that he invited a foreign beauty to be the president.

Seeing that he was staring at him with straight eyes, Dean Li was secretly unhappy in his heart, thinking that he had met another disciple, and said with a faint smile: "Geng Gong, this is the case. We designed a 3.82MPa superheated steam main pipe from the boiler room to the plant for each heating unit. A safety valve was set up on the outer pipe gallery to prevent overpressure, and it turned out that there was a problem here. ”

Geng Zhiyuan saw that she spoke in a straight and round manner, without the slightest crooked tone, and couldn't help but wonder: "Dean Li...... You speak Chinese so well. ”

Only then did Dean Li understand the reason why Geng Zhiyuan looked at him, and couldn't help but smile and said, "Geng Gong, you misunderstood, I am Chinese." ”

Mr. Chen also smiled: "It's my fault, I forgot to introduce it." Dean Li's mother is Russian, so she looks like a foreigner, but she is actually a native of Jingzhou. ”

"Oh, I see. Geng Zhiyuan said embarrassedly: "I thought that our company's design institute specially hired a foreign beauty dean." ”

Seeing him turn around and praise himself for his beauty, Dean Li covered his mouth and said with a smile: "Geng Gong is really good at laughing, I, the dean, didn't exchange my face for it." ”

In front of the leaders of both sides, Geng Zhiyuan didn't dare to make any more ambiguous jokes with Dean Li, and hurriedly introduced the topic to work: "Can you take me to the scene to have a look?"

"Okay, let's go now?" Dean Li is a decisive woman, just do what she says, put on a hard hat and lead Geng Zhiyuan to a pipe gallery on the southeast side of the factory.

"Geng Gong, this is it. ”

Geng Zhiyuan followed the direction of her finger and looked, obediently! The steam main pipe made a U-shaped bend here, and a safety valve was installed on the horizontal pipe at the bottom. At this time, the safety valve had fallen to the ground, and the connection between the root pipe and the main pipe was torn apart, revealing a huge hole.

The vent pipe connected to the outlet of the safety valve falls to the ground together with the valve body, and the vent pipe outlet is designed as a horizontal pipeline, and a small bracket is also provided between the outlet pipe and the pipe gallery.

Geng Zhiyuan took a closer look, and there was a pipe support at the outlet of the vent tube, and there was no trace of welding at the bottom.

"The outlet pipe of the safety valve cannot be set horizontally. Geng Zhiyuan pointed to the exit pipe and said.

Before President Li came, he called several process designers from the company's design institute, and one of them was a middle-aged engineer and said, "Aren't all venting pipes designed like this? ”

Geng Zhiyuan smiled slightly: "It is not recommended to do this in the norm, there will be horizontal reaction force in the horizontal setting, and your accident is mainly caused by it." ”

Another engineer was unconvinced: "We've done this before, why are we okay?"

Geng Zhiyuan glanced at him and said, "Just because you didn't have an accident doesn't mean that you're doing it right, it's just that it's not time for an accident yet." ”

Dean Li hurriedly asked, "Geng Gong, how do you think this place should be designed?"

"There are examples in the specification where the vent tube is vertically upward, and the bottom is provided with a tear hole drain and a stent that can withstand the reaction force. Geng Zhiyuan carefully inspected the broken connection again, pointed to the broken joint, and said: "With such a high pressure, how can the tee be connected by open hole welding? ”

"Seamless tees are too expensive. The middle-aged engineer retorted, "Don't you see that I've already thought about reinforcement?"

Geng Zhiyuan touched the reinforcement and said: "No matter how much reinforcement is not as strong as the seamless tee formed at one time, the strength is higher." However, this break has nothing to do with reinforcement, such a large force and torque, and the seamless tee cannot withstand it. ”

Dean Li had an epiphany and said: "I listened to Geng Gong's meaning, this accident was mainly caused by the unreasonable design of the vent tube. ”

"Yes!" Geng Zhiyuan pointed to the pipe frame left on the pipe gallery and said: "If the pipe frame is changed to a fixed frame, it is possible that the pipe will not be pushed down, but if the reaction force is strong enough, it will affect the main pipe corridor to damage." ”

"Is it so serious?" the middle-aged engineer sneered: "Alarmist, the safety valve can push the main corridor crookedly, who believes it?"

"Zhao Gong, don't discuss issues with personal emotions. Seeing that his subordinates were speaking more and more politely, Dean Li had to warn.

"Hmph!" Zhao Zhongzhong tilted his neck and straightened his chest, looking unconvinced and angry. Geng Zhiyuan didn't want to waste words with him, so he thought for a while and said, "Dean Li, you give me the relevant drawings, and I will have to calculate how big the computing power is when I go back." ”

"Then I'm sorry for you. Dean Li asked for the drawings from Zhao Zhongzhong and handed them to Geng Zhiyuan.

After returning to the office, he took out the C2 software technical manual and operation manual, and tried to calculate the relief reaction force of the safety valve step by step by referring to the parameters on the design drawing.

There is nothing difficult in the world, only afraid of people with a heart, Geng Zhiyuan has always been attentive to doing things, once he is obsessed with studying something, he will enter a state of selflessness and devote himself to solving problems.

In just one day, he learned to build a mechanical model of the safety valve and solve the relief reaction force and moment of the safety valve. At the same time, in order to have a comparison, he calculated it manually according to the calculation method of the relief reaction force of the safety valve in the HG/T20645 "Regulations on the Design of Pipeline Machinery of Chemical Plants".

There is a slight difference between the two calculation methods, but the overall difference is not significant. Geng Zhiyuan went online to read a lot of relevant digests on the calculation of the reaction force of the safety valve, and he had the bottom in his heart.

Selfless work could not perceive the passage of time, and when he finished summarizing the experience summarized in the calculation, he realized that it was half past eleven in the middle of the night, and it was time to leave work every day.

Geng Zhiyuan, Liu Mei, Chen Ying and several other young men and women left the office building and walked along the dark factory road to the hotel. Before he had gone far, a person hurriedly ran behind him, shouting as he ran: "Xiao Chen, wait! Xiao Chen, wait!"

Geng Zhiyuan heard that it was Jia Rui's voice, and secretly wondered: "It's so late, why is Jia Rui looking for Chen Ying?"

Just as he was thinking, Jia Rui had already caught up with him. He gasped and said, "Xiao Chen...... You wait...... I have something to tell you. ”

Although Chen Ying hated Jia Rui very much, after all, he was an old comrade, so out of politeness, she had to stop and ask, "What's the matter?" Jia Gong. ”

"Oh, this ......" Jia Rui looked left and right, Geng Zhiyuan, Yu Qinghe, Zeng Dayou and Liu Mei all stood up and turned around to stare at him, and couldn't help but blush: "You all go, let's go! I'll tell Chen Ying something, what do you listen to? Let's go!"

Liu Mei felt that something was not quite right with Jia Rui tonight, and besides, how could she leave Chen Ying alone with Jia Rui in the middle of the night, so she said: "Jia Gong, if you have something, you can say it, we are used to walking together." ”

Geng Zhiyuan also noticed a hint of abnormality, and stretched out his hand to pull Yu Qinghe, Yu Qinghe said: "Jia Gong, you say, let's go after we are done." ”

Jia Rui wanted to say it but didn't dare to say it, hesitated for a while, stomped his feet and said: "You children are really ignorant!

Under the cover of the night, he couldn't see Jia Rui's expression, and Geng Zhiyuan's heart suddenly moved: "Jia Rui, this guy shouldn't have taken a fancy to Chen Ying, right?"

If Jia Rui really wants to be good with Chen Ying, it is a realistic version of a toad who wants to eat swan meat. With Chen Ying's temperament, even if she doesn't look for a partner in her life, it is impossible for her to look down on Jia Rui, is this guy thinking about his daughter-in-law's brain?

Geng Zhiyuan knew that Chen Ying had always been high-minded, and he looked down on Jia Rui, who was obscene. If she knew that Jia Rui had such dirty thoughts about her, she would probably be so angry that she couldn't even eat.

"This person is really inexplicable to stop you and not say anything. Liu Mei complained twice, and continued to walk forward with Chen Ying.

Geng Zhiyuan turned his head to look at Jia Rui who was far away, and then looked at the back of Chen Ying, who was close at hand, and said secretly: "These two people have a relationship, but they have a good show." But Chen Ying is my senior sister, I have to help her, I can't let a scumbag like Jia Rui bully her. ”