Bac Ninh province, Hoa state power plant.

Next to a huge power turbine, officials, technicians, and workers looked at each other with all kinds of expressions on their faces. Among them, especially Duan Zhengwei, the director of Longshan Electric Machinery Factory, had the most bleak expression, a tall and strong man, and his eyes were actually covered with a layer of tears.

"What the hell is this! Even if something goes wrong a week later!"

Duan Zhengwei complained to Feng Xiaochen beside him in a dumb voice.

Hearing the news of the failure of the 600,000 units of the Hezhou Power Plant, Duan Zhengwei and Feng Xiaochen, who were waiting in the capital to fight wits and courage with the Dingnan Planning Commission, were dumbfounded. They can think of things when they talk about Guoliang, and Feng Xiaochen and they can naturally think of it too. They pulled the banner of self-reliance, put pressure on Tan Guoliang and them, and took advantage of morality. Zhu Julan and the gossip they heard, some of which Feng Xiaochen arranged for people to spread, and more of them were made up by people in various circles with their own imagination. Feng Xiaochen was naturally happy to see this kind of rumor circulate, because it would bring endless trouble to the Southern Province.

Just as the dawn was in front of him, and Dingnan Province was about to raise its flag and surrender, its backyard suddenly caught fire. The accident at the Hezhou Power Plant smacked Feng Xiaochen and Duan Zhengwei hard in the face, and they couldn't hold up the banner they held high. Feng Xiaochen himself is a person who is good at conspiracy and conspiracy, how could he not imagine how Dingnan would use his strength to build momentum at this time. At the very least, everyone brought the matter to the State Planning Commission, and the Planning Commission could no longer help Longshan Electric Machinery Factory to say anything, and Feng Xiaochen's previous operations could be said to be in vain.

After Wang Zhenbin heard the news, he called Feng Xiaochen as soon as possible to ask about his attitude. Wang Zhenbin had previously spoken harshly to Wang Jinsheng, and he was entrusted by Feng Xiaochen. However, Wang Zhenbin is not wrong in saying those words, because Dingnan Province is indeed at fault first, Wang Zhenbin's words are completely in line with national policy, even if Feng Xiaochen does not entrust him, he will say so, but his attitude may be more relaxed.

Now that the wind is turning sharply and there is a problem with domestic equipment, Wang Zhenbin's previous tough attitude has become a handle, and he may be held up by Dingnan. Wang Zhenbin felt a little regretful in his heart, feeling that he shouldn't have gone to this troubled water out of classmate affection, but something has happened, what's the use of regretting?

"Big brother, this matter is still unclear, I am going to go to the scene immediately with the people of Longshan Electric Factory to understand the specific situation. The policy of self-reliance is right at all times, and it will never be denied just because there are one or two accidents. On the Dingnan side, you still have to hold it out as much as possible, and don't let them get through the tricks. I think they are at best using this incident to make trouble, but they definitely don't dare to say that the moon in a foreign country is rounder than in China, unless they don't want to do it, don't you say?" Feng Xiaochen comforted Wang Zhenbin on the phone.

"That's just as well. Wang Zhenbin felt a little more down-to-earth. The problem with the domestically produced equipment of the Hezhou Power Plant is not a particularly big deal, and how can there be equipment that absolutely does not have problems? The only trouble with this incident is that it happened to be too coincidental, and it happened to happen on the cusp of the bidding incident at the Shating Power Plant, so that the Dingnan side found an excuse. But if we think about it deeply, can we deny self-reliance just because of a failure in domestically produced equipment? I'm afraid no one dares to say this, right? Wang Zhenbin represents political correctness, and there is no need to worry about saying it on any occasion.

Feng Xiaochen appeased Wang Zhenbin, and asked Duan Zhengwei to contact the people from the Ministry of Finance, asking them not to easily succumb to the pressure of Dingnan, and wait for everything to be clarified. Subsequently, he and Duan Zhengwei rushed to Bac Ninh Province by plane and came to the Hoa Chau Power Plant.

Hezhou Power Plant is no stranger to Feng Xiaochen. The earliest encounter between him and Du Xiaodi was because the 600,000 kilowatt motor stator transported by Longshan Electric Machinery Factory to Hezhou Power Plant had a transportation accident on the way, which led to the emergency repair of the camp. Later, Feng Xiaochen went to the Hezhou Power Plant several times, and the most recent one was to participate in the grid-connected power generation ceremony of the domestic 600,000 kilowatt units of the Hezhou Power Plant.

The 600,000 kilowatt unit of the Hezhou Power Plant is not the one that Daying rushed to repair. At that time, it was said that it was a domestic unit, but in fact, 70% of the components came from the United States, and it belonged to a unit made in the United States and assembled in China. Of course, the experience of that assembly was also valuable for Chinese companies, and the engineers and workers of Longshan Electric Plant learned a lot from it.

This time, the unit is the second 600,000 kW unit manufactured by Yongsan Electric Factory. The unit adopts the design drawings of Xiyi Company, most of the components are manufactured in China, and only a few parts with particularly high technical requirements are still imported parts, and the localization rate has reached the expected requirements. After the equipment was manufactured, it was transported to the Hezhou Power Plant for installation, and the low-load test operation was carried out, with good results, and was commended by the Machinery Commission, the Ministry of Water and Power and other departments.

This time, Duan Zhengwei went to the capital to bid for the Shating Power Plant project, and his introduction materials also included the content of the 600,000-kilowatt unit in Hezhou, and it was also a very important part. Who knows, but it was precisely this unit that fell off the chain.

"We started a 100% load test two weeks ago and found that the thrust bearing pad temperature was too high at 120 degrees Celsius and the axial thrust was 52 tons, both of which were well above the design allowable values, so we stopped for inspection. Zhai Shaohua, chief engineer of Hezhou Power Plant, introduced the situation to everyone.

It turned out that the news Wang Jinsheng got was still somewhat out of shape, and the problem was not the motor spindle, but the thrust bearing of the steam turbine, and the nature of the problem was not as serious as he said, at least not to the extent of causing a fire. Of course, the temperature of 120 degrees Celsius is enough to make the lubricating oil smoke.

"The turbine was designed by the American company Xiyi, and as soon as we found out about the problem, we sent a fax to the company and asked them to analyze the cause of the accident. They believe that there will be absolutely no problems in the design, and that the problem should be in the manufacturing and installation, and put forward some possible situations, including the leakage of the piston of the inlet pipe, the unopened balance hole of the adjustment stage, and the leakage of steam in many places in the nozzle chamber. Quan Jiancai, chief engineer of Longshan Electric Machinery Factory, interjected and continued to introduce.

"Do these situations exist?" asked Yang Le, director of the Ministry of Water and Power.

"We urgently reviewed the records of the manufacture and installation of the equipment, checked it many times, and asked the operators that it was unlikely that these would happen. In recent years, we have implemented total quality management, and each process has strict quality inspection requirements, and the possibility of such a big error is very small. ”

"If it's not these problems, then what other problems could it be?" Yang Le asked.

Quan Jiancai turned his head to look at Duan Zhengwei, hesitating and not knowing what to say. Duan Zhengwei also hesitated for a moment, and then said in a low voice: "Director Yang, we have a conjecture that the problem may not be with us, but with the design of Xiyi Company. ”

Yang Le was a little stunned, and immediately sank his face and said, "Director Duan, as the director of the first factory, you have to be responsible for saying this kind of thing. Xiyi Company is a world-renowned large enterprise, and people have built more power generation equipment than all our power generation equipment in China, so can there be problems with such a 600,000 kilowatt unit? However, this kind of shirking responsibility is very inappropriate. ”

As soon as these words came out, Duan Zhengwei's face couldn't hold back, he had the heart to argue a few words, but he didn't know how to say it. He also knows a little about motors, but after all, he is not a professional technician, and some principles are not clear. He turned around and said to Quan Jiancai: "Lao Quan, you tell me about the situation you are considering, and let Director Yang refer to it." Also, isn't Assistant Feng also here, he is also from a technical background, so he may be able to give some opinions. ”

Quan Jiancai nodded, pointed to the thrust bearing on the steam turbine, and said to Yang Le and Feng Xiaochen:

"Director Yang, Assistant Feng, you see, the problem this time is first manifested in the overheating of the thrust bearing, we analyze, the reason should be that the thrust of the bearing exceeds the design requirements. With this in mind, we measured the axial thrust of the bearing and found that the axial thrust was nearly 2 times higher than the design value, and it was determined that the cause of the failure was that the axial thrust was too high.

In the past few days, we have concentrated the technical strength of the whole plant, made a very comprehensive causal analysis diagram according to the reasons for possible problems in design, manufacturing, installation and operation, and then calculated them one by one, eliminated various unreal possibilities, eliminated some unimportant factors, and finally found that there is only one reason for the excessive thrust, that is, there are problems in the design method of Xiyi Company.

When we introduced the technology of Xiyi, the Americans taught us a full set of calculation methods, and their steam turbines were calculated in this way. We used the same method to calculate the turbine, and the result was that the axial thrust would not exceed 28 tons, while the actual measurement was 52 tons, which shows that their calculation method must be flawed. ”

"What, there is a flaw in the calculation method?" Yang Le was a little confused, he was not a technical cadre, and he couldn't figure out what the calculation method was particular about. Quan Jian is the chief engineer of Longdian, and he is technically very good, he can conclusively think that there is a problem with the calculation method, and Yang Le is really not good to refute him.

"Since the general engineer thinks that it is a problem of calculation methods, let's start with the calculation methods to discuss it. Feng Xiaochen said calmly, "How can it be so easy to digest and absorb imported technology, and there is nothing big about a little problem." I think that if something like this happens, whether the ultimate responsibility lies with the foreign side or on our side, it will be beneficial for us, at least we can master more ability to analyze the problem. ”