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Li Yuanling looked at the "Summary of the Broken Shaft Accident of the Lanzhou Chemical Plant of the ED12 Gas Turbine Electric Group" with a thickness of one inch in his hand, and sighed long.

The foundation is too thin, Li Yuanling thought with mixed feelings.

After a year of rapid expansion, Brilliance Power has more than 6,000 employees at this time, and it can be regarded as a large factory in Shengjing.

Located on the west side of Nanhu Science and Technology Park, a provincial-level textile backbone enterprise far from the two intersections of the west gate of the Science and Technology Park, the number of employees of Shengjing Woolen No. 2 Factory is only 9ooo.

Unfortunately, the products produced by Brilliance Power are gas turbines, which are known as industrial pearls, and the more than 6,000 people alone account for 3,200 people in the Brilliance-Rolls-Royce Turboshaft Shaft Manufacturing Co., Ltd., a joint venture between Brilliance Power and Rolls-Royce.

The remaining more than 3,000 employees, in addition to preparing for the small batch production of Spey motor units named ed12 by Brilliance, also have to divert some employees to familiarize themselves with the Tyin Rm1a gas turbine production line that has just been dismantled from Rolls-Royce's Bristol production base in the UK.

In order to save money, after obtaining the license of Tyne's Rm1a gas turbine technology, the Science and Technology Park reached an agreement with Rolls-Royce that after the production of the 12 Tyne Rm1a gas turbines purchased by Brilliance in the early stage was completed, Rolls-Royce would close the production line of Tyne's Rm1a gas turbines in the UK and sell the second-hand equipment directly to Brilliance.

If it weren't for the signing of a large order of nearly 100 million US dollars between Brilliance and Rolls-Royce, and the huge pursuit of common interests between the two sides in the power equipment of the Republic of China, even if it is second-hand equipment, the Science and Technology Park would not have spent only 180,000 US dollars to obtain a complete set of gas turbine production lines.

This second-hand line from the Rolls Bristol production base, the annual production of Rm1a gas turbines can reach up to 12o, including precision forging, precision casting, heat treatment, testing, test bench and a series of professional equipment necessary for the production of gas turbines, if you choose new equipment, it is cheaper to spend 100 million or 200 million US dollars.

The agreement reached between Brilliance and Rolls-Royce is similar to the introduction of the Bac1-11 passenger aircraft production line in Romania, the only difference is nothing more than a self-financing and the use of national sovereign debt.

Technicians are not enough. Li Yuanling thought with a headache.

Li Yuanling, a manufacturing personnel and assembler, is not worried, with the huge industrial population base of the Republic, as long as the treatment is sufficient, there are still many middle and senior technicians who can be qualified for assembly, manufacturing and assembly.

The only thing that gave Li Yuanling a headache was that there were too few researchers, and after two years of high expansion, Brilliance's pure technical researchers had exceeded 800 people.

In terms of the number of technicians engaged in gas turbine research in the 80s of the Republic, almost one-tenth of them were recruited by Brilliance.

If these 800 technicians are gathered together. Thrown into a gas turbine project, it is just enough, and now there are three projects in the hands of the Science and Technology Park, which are derived from the ed12 motor unit of the Spey project, the jewel vortex shaft motor, and the Taiyin Rm1a gas turbine, on average, there are only more than 200 researchers in each project, and the talent gap is obvious.

Training of intermediate and senior technicians. In addition to digging the "corner of socialism", the feasibility research personnel can only recruit fresh graduates of related majors step by step.

At this time, the teaching materials and teaching equipment of gas turbine-related majors in colleges and universities in the Republic of China were backward, which made the fresh graduates of the gas turbine major completely unable to keep up with the current research progress of Brilliance.

Needless to say, the eighties. At present, in addition to Shengjing, Beiping, Xi'an, Nanjing, Harbin, Wusong, and other major universities or aviation colleges and universities in the big cities that have opened gas turbine-related majors, there are only three or four hundred graduates every year, which is tantamount to a drop in the bucket for Brilliance's talent gap.

It can be said that the root cause of this Lanhua accident lies in the number of researchers and the lack of experience.

After more than three months of detailed investigation, the culprit of the ED12 motor unit shaft breaking accident has been found, and the oil pipe joint responsible for providing lubricating oil for the gas turbine spindle has a slight leakage. After the double-line operation of the equipment, the leakage point expanded, and the oil pipeline suddenly broke off.

Since the ED12 gas turbine unit is mainly used for electrical equipment, in order to reduce costs, Brilliance has made major changes to the backup oil supply system of the original unit in the design, after all, civilian equipment does not have to retain too much safety margin compared with military equipment.

After the modification, when the lubricating oil system of the main shaft of the ED12 gas turbine unit fails, the backup emergency safety system can still maintain the operation of the whole unit for 1o minutes, leaving a lot of time for the emergency shutdown of the unit.

The crew on duty on the day of Lanhua had a bad stomach. Frequently leaving the post, the first time to the immediate situation of the unit to manually shut down, even so normal conditions of this heavy situation has met the requirements of automatic shutdown of the unit.

After more than a year of struggle, Su Liangyu has developed a digital monitoring system for the ED12 gas turbine unit to monitor the pressure, temperature and other parameters of various main pipelines during the operation of the gas turbine. It makes the unit have the ability to automatically shut down in the face of severe conditions.

However, because the chip real room is the first time to engage in this kind of thing, the reference object is only the similar design on the gem vortex shaft motor, this electronic monitoring system has just been opened when the false alarm rate is extremely high, the equipment can not operate normally, in order to solve this problem, the chip real room from the software, hardware two-pronged, designed several verification programs to solve the false alarm problem.

After tossing and turning for more than a year and spending more than 5 million dollars, this electronic monitoring system is finally usable, the only drawback is that it is limited to the processing capacity of the processor, and it is necessary to complete several verification links in more than 10 seconds after the unit is in danger, and the automatic shutdown step can be started.

This time delay was not a fatal flaw for the manned motor unit running on the ground, but it was bad that the unit caught fire as soon as the oil pipeline broke.

Although the chip room knew that the quality of its own chips could not adapt to the high-heat environment when the unit was running, and built the data processing system and the unit separately, the discrete devices that monitored the real-time operation of the unit could not be spared.

Less than ten seconds after the unit caught fire, the discrete device responsible for monitoring the operation of the unit has been reimbursed, and the number of processing systems responsible for emergency shutdown is busy computing and verifying, because the monitoring system suddenly has no movement, the verification program falls into a dead loop, and the result is that this insurance is like a fictitious and does not play any positive role in this accident.

Due to lack of experience, Brilliance put the water-cooled pipeline responsible for cooling the gas turbine and the lubricating oil pipeline responsible for the supply of lubricating oil close to each other, because the main function of the Lanhua unit is to deal with the flammable gas produced by petroleum cracking cracking, and then balance the industrial power grid of Lanhua, which makes the output of the unit not as constant as that of professional electrical equipment.

With the change of the output of the unit, the refrigerant flow rate provided by the water-cooled pipeline responsible for cooling the gas turbine also changes, which leads to the expansion problem caused by the large temperature difference in the design of the water-cooled pipeline.

As a result, when the unit actually worked, the working environment of the lubricating oil system was completely affected by the water-cooling system, which was completely beyond the pre-design estimate, and finally this seemingly inconspicuous small error led to the leakage of the lubricating oil pipeline due to shrinkage and caused a catastrophe.

Although the whole process of the accident is full of a series of coincidences and mistakes, but this kind of coincidences in industrial production is absolutely inevitable in chance, from a mathematical point of view, with the passage of time or the accumulation of times, the 1% chance and the 99% chance are no different from the results, they are destined to be born.

If it weren't for this accident, Li Yuanling would not have noticed that in applications where the power of the gas turbine changes frequently, the water-cooling pipeline and the lubricating oil pipeline cannot be designed together.

Thinking of Rolls-Royce, General Motors, Pratt & Whitney, Alstom and other gas turbine companies, on a set of core machines to make dozens of models for various operating environments to make money, it is nothing more than this kind of loss, after rich experience, but use bad things to refine the market classification of gas turbines.

For example, after the experience of this explosion, Brilliance can come up with two new models, one keeps the original design defects unchanged, and only targets the normal electricity market where the gas turbine output is stable.

The other is to sum up the lessons learned and change the relevant design to broaden the application environment of the gas turbine and turn it into a so-called high-end product...

has been nurtured by that little bastard of her own for a long time, and this crooked mind in business is really good, Li Yuanling can't help but laugh and think about the "cheating money" plan that she just came up with.

Li Yuanling was holding the accident report and lamenting the difficulty of the production and research of the "Industrial Pearl", and a series of tom tom running sounds sounded from afar.

There were only more than ten seconds of time, and the footsteps came from far and near, and the door of Li Yuanling's office partition was slammed open with a bang, and Ning Wanfei was the first to rush in.

"What's wrong? What's going on? You three are sweating profusely. Li Yuanling asked a little anxiously.

Seeing Liang Yuan staring at the corridor outside, Ning Wanjia took a deep breath, came to Li Yuanling's side, hugged Li Yuanling's neck and whispered: "Aunt Liang, it's amazing, the three of us just appeared a new guide material, and now I don't know what to do." ”

ps: Make up the arrears first, and only came back in the second half of the night yesterday, and the fake wood has time, and the book friends who are waiting for more can't stand it.