In the conference room, the atmosphere was serious.

Very quiet.

Vice Minister Li Chaolin was introducing the situation to everyone, "After the hard work and efforts of our technicians for two days and two nights, all the sizes, key technical requirements, etc., they were all re-measured and inspected. I think the next test drive should be foolproof."

This has been recognized by many technicians, and they nodded in agreement and felt very confident.

After Li Chaolin finished speaking, Zheng Xianxue, as the official minister, also spoke, "Our technical system believes that it is certain to conduct a test run next..."

He talked for a few minutes, not only adding confidence to everyone, but also talking about some things to pay attention to in the next test run.

The meeting lasted for nearly an hour, and Chen Shaohua made his final speech, "Comrades, since the technical system is so sure, I agree to conduct a power system test drive, and I hope it will be passed at one time."

As soon as the voice fell, applause rang out in the conference room.

If the power system is installed unsuccessfully or not, it is not just about looking at the measurement data, but about trying it out with real swords and guns. The easiest way is to test it.

Only when the test run is successful can it mean that there is no problem with the power system.

Amid everyone's applause, Chen Shaohua sat down. If you look closely, you will find that his face was not relaxed.

At this moment, he himself didn't understand why he felt a vague premonition in his heart, as if something would go wrong in the next test drive.

However, at this time, the arrow had already been slit and had to be fired.

The technical system has already said that all data are retested without errors, there is no problem, and you can test it. He, the chief construction engineer, must make a decision.

Things are settled, and the test run will be carried out as soon as possible.

All preparations begin.

The next morning, accompanied by Xie Xinjian and Zheng Xianxue, Chen Shaohua boarded the first ship in outfitting and walked into the command room on the ship.

The command room is very large and spacious, and is being installed. Some wires, data cables, and computers have been installed, and some are being installed, and some workers are busy.

The command room has a good view and you can see the outside through the glass, but Chen Shaohua's mind is not on the visiting command room, but is concerned about the subsequent test drive of the power system.

This is the first time in China to adopt Chai Ran Combined Power.

This key technology is being built on the shaft system. This is also the first time for the Donghai Shipyard.

It is precisely because of this that Chen Shaohua attached so much importance to it. He personally boarded the 052 ship and wanted to know the results of the test run as soon as possible.

Not long after, a technician in charge came over and reported to the news: "Report to the chief construction engineer, will he meet the test run conditions? "

Chen Shaohua ordered: "Start the test drive now!"

Soon, the two imported diesel engines started at a very high speed. Even if they did not enter the power compartment, they could feel that the power system had been started on the deck or in the command room on the ship.

Xie Xinjian said hopefully: "Old Chen, the power system has been started."

Upon hearing this, Chen Shaohua nodded gently. Of course, he hoped to succeed at one time, but he did not dare to take it lightly. What if it fails or some problems arise.

Zheng Xianxue is confident, "There should be no problem. Before the power system test run, we conducted the test and all the data were correct."

He introduced: "This time we will try two diesel engines and try the working conditions of two lm2500 gas turbines under the afterburner state, which will take about half an hour..."

He introduced the test drive plan, but Chen Shaohua listened and said nothing.

Inside the power cabin.

Several technicians personally watched the two diesel engines start and drive the transmission shaft to rotate at high speed. They checked, take a look here, take a look there.

“It should be no problem.”

“It works fine.”

Because the noise is still quite loud, they almost shout loudly when communicating with each other. They may not hear it very clearly, but they can guess what the other person means from the other person's eyes and the expression on their faces.

Looks relaxed.

Exudes joy.

The two diesel engines worked for about twenty minutes, but no abnormalities were seen. The two lm2500 gas turbines were also started, and suddenly, the power cabin became lively.

The sound is louder, the entire power system is fully working, and the transmission shaft rotates faster under the driving force of these two gas turbines and two diesel engines.

Both gas turbines have outer covers, which isolate a large part of the noise. They can still stay in the power compartment, not to the point where the noise is too loud.

The communication between them requires louder voices, and several technicians shouted loudly, talking about the test run.

“It shouldn’t be a big problem.”

"I think so too, overall it's pretty normal."

“……”

They were paying attention to the operation of the power system, but they still looked here, there, or focused on the data on each instrument.

It seems that everything is normal.

In the command room, Chen Shaohua felt that the test run should be completed, because the movement during the test run seemed to stop and waved.

"Let's go, let's go to the power cabin to take a look."

The few of them arrived at the power cabin and the test drive was indeed completed. Chen Shaohua and others did not enter the power cabin because although the power cabin was designed relatively well, two LM2500 gas turbines were installed, two imported diesel engines, and some supporting equipment, several technicians were already inside, and the few people were indeed a little crowded when they entered.

Just standing at the door and looking at the technicians, Chen Shaohua asked, "How is the test drive situation?"

This is what he wants to know the most.

The leading technician said happily: "Report to Chief Construction Engineer Chen, everything is normal for the test run, and no problems have been found yet."

Suddenly, many people felt relieved, and most of the stones hanging in their hearts fell.

Li Chaolin, deputy director of the Engineering and Technology Department, even said: "I just said there will be no problem. It seems that it is very necessary for us to conduct detailed inspections before the test run, ensuring the success of the test run."

No problems were found.

Everything is normal!

Hearing such a report, to be honest, Chen Shaohua also relaxed a little, his face relaxed, "It seems that it's going well, Minister Zheng, what are we going to do next?"

Zheng Xianxuedao: "The most critical technology for installation of the Chai-Ran joint power system is shaft system centering. The means to detect whether this technology meets the requirements. In addition to the power system test, the transmission shaft must also be removed to check whether the bearing shells are worn or burned."

If the bearing shell is normal, there is no wear or burn, and the test run data is normal, it means that the shaft system is centered in accordance with the process requirements and the installation of the power system also meets the technical requirements.

Chen Shaohua said: "When the system cools down slightly, immediately disassemble the transmission shaft to check the bearing shells. We will not go up and wait for the results here."

Of course, Xie Xinjian, Zheng Xianxue, Li Chaolin and others also wanted to know what the result was, but because the test data were normal, and they had been tested before the test, especially Li Chaolin, who was full of confidence.

"I guess there must be no problem with the bearing shell." He said with confidence.

After about ten minutes, the system was almost cooled down. Several technicians took tools and worked together. They were obviously very familiar with the structure of the transmission shaft and were more skillful in dismantling. Before long, the bearing shell was removed.

Several technicians came over together, and when they saw the bearing shells, their faces changed.

How could this be the case?

Why!!!

The hearts of several technicians suddenly sank to the bottom. They were originally full of hope and were in a relatively relaxed mood, but now they are only sighing.

Although Chen Shaohua did not enter the power cabin, he knew when he saw the technician's reaction that something was wrong, so he immediately asked in a deep voice.

"What's wrong?"

Xie Xinjian and Zheng Xianxue looked at each other quietly, and their hearts also sank, and their originally relaxed eyes suddenly became serious.

Where is Li Chaolin?

I felt very puzzled. I had undergone detailed tests before the test run and the test run was normal. Will this also have problems?

Facing the inquiry from Chief Chen, the technician in charge said bitterly: "Mr. Chen, please take a look for it yourself."

Regardless of the crowding of the power cabin, Chen Shaohua and others all came in, their eyes fell on the bearing shell, and instantly, their hearts were cold.

It was like a basin of ice water pouring it head-on.

Why?

The bearing shell is worn severely, and you can see very obvious wear marks. If the test run takes a little longer, the bearing shell may be burned.

How long has it been!

The test run time is only about half an hour, and the bearing bushing will wear so quickly. Under normal circumstances, the service life of the bearing bushing can reach more than 5,000 thousand hours.

Only during the overhaul or the service life is up will the bearing shell be replaced. The replacement bearing shell may not necessarily be worn, but the service life is up.

What about now?

Less than half an hour!!!

No wonder everyone's hearts are cold.

The atmosphere was depressing and dull. After a long time, Chen Shaohua was helpless and could only sigh, shook his head, and said slowly: "Minister Zheng, carefully investigate the cause, and this problem must be solved as soon as possible."

In an instant, Zheng Xianxue felt very stressed, but at this time, no matter how stressed he was, he had to face the difficulties and solve this problem.

Xie Xinjian looked at the bearing shell and reminded: "Before the test run, all data were tested normally, and the deviation of the shaft system centering required was not greater than 5 wires. If I remember correctly, our deviation was only 4 wires, which were completely within the qualified range. Now the bearing shell is worn. Is it caused by insufficient lubrication?"

Zheng Xianxue shook his head slowly.

Xie Xinjian couldn't tell whether the lubrication was insufficient. This was normal because he was not a technical person and was mainly responsible for the construction of ships.

Zheng Xianxue is a technical person. He knew at a glance that it was not a lubrication problem, because the bearing shells were full of lubricating oil, as for the specific reason.

He couldn't figure it out for a while.

......

I wish you all a happy May Day!
Chapter completed!