Zhang Yihua, who is in charge of power system research, seems to be much more active than An Zixuan, and after everyone came to the power system laboratory, Zhang Yihua spread out a few drawings and began to introduce the situation of an industrial steam turbine designed by his team to everyone.

Industrial steam turbines are a key piece of equipment in ethylene projects, mainly used to drive high-power equipment such as pyrolysis gas compressors, ethylene compressors and propylene compressors. The power of these devices exceeds the load of ordinary electric motors, so special steam turbines are required to drive them.

"The steam turbine we designed is a multi-stage and multi-valve extraction and condensation type, and the design and manufacture of the body, noise control, shaft vibration, shaft displacement, bearing temperature monitoring system, etc., all strictly implement the corresponding API standards. Our turbine flow section is 20 stages, including 1 regulating stage, 3 EBI stages, 14 EBII stages and 2 low-pressure standard torsion vane ......"

Zhang Yihua's mouth was a string of terms, and the audience present was immediately overwhelmed. Lin Zhenhua also didn't understand what Zhang Yihua said, only knew that these things should be very yellow and violent. However, some of ALK's personnel specialized in steam turbines, and he listened to Zhang Yihua's words, and he was still bowing his head slightly at first, but slowly became solemn.

"Mr. Zhang, can I ask how much pressure your turbine wheel chamber can reach?" The ALK expert named Frederick couldn't help but raise his hand and ask.

"According to our design requirements, the pressure in the wheel chamber should reach 6.5 megapascals. ”

"It's impossible." Frederick said, "No cylinder can match that strength. ”

Zhang Yihua smiled slightly and said: "Sir, this is the innovation of our type of steam turbine, we have adjusted the structure of the inner cylinder in the intake part, and in the high-pressure part, we also use a double-layer structure. After our test, the strength can fully meet the requirements. ”

"Uh......" Frederick listened to the cloud and fog, and before he could ask a few more questions, Zhang Yihua had already cast an apologetic look at him. Frederick understood the subtext in Zhang Yihua's eyes, and then went on, it involved the core technologies of each family, and it was impossible for people to tell you these contents.

Zhang Yihua then spread out another picture and pointed it out to everyone:

"From the perspective of all of us, this is the reactionary straight blade shape used in our steam turbine, which is an improvement on the basis of the earlier T3 blade shape, mainly by changing the profile to obtain the right angle of attack, which reduces the loss of angle of attack and also reduces the loss of wake turbulence. After this transformation, the efficiency of the stage has increased by more than 2%......"

Frederick's eyes became misty, and he stared directly at the picture in Zhang Yihua's hand, eager to snatch it and stuff it into his bag. Regardless of the facts, Frederick can be sure of at least one thing, that is, Zhang Yihua is definitely a very good steam turbine expert.

"Mr. Zhang, have you started manufacturing your steam turbines now?" Frederick asked.

Zhang Yihua shook his head and said, "Not yet, but it should be soon." Truth be told, we are currently experiencing some difficulties with the material of the blades, but I believe that we can solve them by giving us some time. ”

"Then I will congratulate Mr. Zhang in advance." Frederick said insincerely.

Next, Lin Zhenhua took Khedira and his entourage to visit several other laboratories, and in each laboratory, there was a special person to introduce the current status of their scientific research to the Germans. Judging from the introduction of these people, the Chinese side has been very in-depth in the research of ethylene plants, and many key technologies have been solved, and some places have even been ahead of ALK.

When they came out of the laboratory, the look of loss on the faces of Khedira and the others could no longer be concealed, and they were stupidly saying polite words to their Chinese counterparts, but their hearts were constantly beating drums.

"Mr. Lin, thank you very much for arranging such an interesting visit for us, and we have deep respect for the achievements of our Chinese counterparts." Khedira said to Lin Zhenhua.

Lin Zhenhua followed the example of the Germans, shrugged his shoulders, and said: "What is the use of these achievements, our leaders prefer to use imported technology, and these laboratories you have seen may be closed down in the near future." ”,

"Oh, that's a shame." Khedira gloated.

After the visit, Lin Zhenhua asked the driver to send Khedira and his party back to the hotel and stayed for himself. Today's scene is good, he has to express his gratitude to the actors.

"Teacher An, thank you for today's incident." Lin Zhenhua held An Zixuan's hand and said. An Zixuan's real identity is a professor of the Department of Mechanical Engineering of Huaqing University, and his research direction is indeed metal materials, but when it comes to low-temperature steel used in ethylene compressors, he is temporary, and he is now learning and selling.

An Zixuan smiled: "You're welcome, you're welcome." Speaking of which, today I was able to blind the Germans, thanks to the lot of work they did in the early stage. By the way, Mr. He, about the question of low-temperature materials, I will ask you for advice another day. ”

He Chengshan smiled proudly and said: "Actually, we can't be regarded as Mongolian people today, about the welding performance of No. 09 steel, I have been working on it for several years with a few students in Xunyang, otherwise, it is impossible to deal with that Ralph in the past with these things mentioned today." ”

Lin Zhenhua walked up to Zhang Yihua again and said to him: "Chief Engineer Zhang, thanks to you today." To be honest, I didn't understand a word about steam turbines. ”

Zhang Yihua smiled slightly: "Actually, I also sweated, I only started reading the information of industrial steam turbines in the past few days, and the ones I did in the past are not the same thing as this at all." Still, it seems that I succeeded, and the German named Frederick must have been frightened by me. ”

"By the way, Professor Zhang, what are you majoring in? I've never heard of your name before. He Chengshan stepped forward and asked Zhang Yihua. The old man spoke honestly enough, and directly said that he had never heard of other people's names, and he was not afraid of people's upset.

"Well, alas, I'm ashamed to say that I'm engaged in aircraft engines." Zhang Yihua said modestly.

"Wow! Those who are engaged in aircraft engines are cutting-edge talents, disrespectful, disrespectful. An Zixuan said.

Zhang Yihua said: "What kind of cutting-edge talent am I, I am now unemployed and middle-aged, and I am still waiting for Manager Lin to give me a bite to eat." ”

"What do you mean?" He Chengshan was a little surprised, "What, you also plan to go to our Hanhua?" However, you are engaged in aircraft engines, and you are separated from our Hanhua. ”

"Let me introduce you." Lin Zhenhua stepped forward and said: "This chief engineer Zhang Yihua is an engineer of our national Yun-10 aircraft project team, and he is well-known in the aviation industry. As we all know, due to structural adjustments, our country's Yunshi project has been discontinued, and Chief Engineer Zhang and his team are now in an idle state. The last time I went to Shanghai to do some business, Liu Xianghai, director of the navy, introduced me to meet with Chief Engineer Zhang, and Chief Engineer Zhang had agreed to work with his team in Hanhua Heavy Industry. ”

"Oh, the experts of the Yunshi project!" He Chengshan was so excited that his beard trembled, "Yun Shi plane, who doesn't know!" That's the pride of our Chinese. When the Yun-10 plane flew to Beijing for the first time, I went to visit it. Why did you get off the horse while you were doing it? It's a pity, it's a pity. ”

Zhang Yihua also showed a hint of nostalgia on his face, but he still said calmly: "Old He, Yun Shi's dismount is also inevitable. Although we overcame many difficulties and achieved the successful test flight of the No. 02 aircraft, we are still far from being finalized. There are many technical problems that have not been overcome in the structural materials, avionics system, engine, etc., and I am afraid that it will be difficult to support our country's current national strength. So ......"

"Understand, understand." He Chengshan nodded and said. People who engage in technology are generally more pragmatic, and they don't like to fool around like some bricks. Large aircraft with a take-off weight of more than 100 tons are a symbol of a country's industrial level, and it is impossible to complete it easily without a strong industrial base. Judging from China's industrial conditions at that time, it was somewhat inadequate to directly impact such cutting-edge technology.

"Actually, we all know how difficult it is to build a big plane. However, we just hope that the state will keep this project and leave some seeds. It's a pity ......," Zhang Yihua said with a gentle shake of his head.

"So, what are you and your colleagues going to do now?" He Chengshan asked, the old man really has feelings for Yun Shi, loves the house and Wu, and by the way, he cares about Zhang Yihua and his colleagues.

Zhang Yihua pointed at Lin Zhenhua and said, "No, Manager Lin said that he is willing to take us in and build a laboratory for us in Hanhua Heavy Industry." I also know that you Hanhua have no connection with the aviation industry, and Manager Lin's move is completely self-interested and exclusively for the benefit of others. However, alas, the temptation of this project was too great for us, and we had to be cheeky and take advantage of Manager Lin. ”

Lin Zhenhua said with a smile: "Chief Engineer Zhang, I don't like to hear what you say, what does it mean that Hanhua Heavy Industry has no connection with the aviation industry?" In the future, if the country restarts the large aircraft project, I still hope to subcontract a little project from it. Besides, we are engaged in chemical equipment, and we can also borrow your aviation technology, didn't you help us make a cameo appearance as a steam turbine expert today? How about it, Chief Engineer Zhang, why don't I really build an industrial steam turbine laboratory, and you can use your experience in aero engines to help us build industrial steam turbines? ”

Zhang Yihua said: "No problem, these two have something in common." The country's large aircraft project may not be able to restart at any time, and our team can also find some inspiration from the work of developing industrial steam turbines, and maybe it will help us improve the aero engine. (To be continued)