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For the power transmission of railway locomotives, there are only two options, electric transmission and mechanical transmission, in the fifties and sixties, hydraulic mechanical transmission and electric transmission go hand in hand, especially in some industrial and mining enterprises, because there are certain explosion-proof requirements, it is hydraulic transmission dominates the world.

In the seventies, with the rapid development of computer technology, electronic commutators and other mechatronics equipment went out of the real room, and new motors such as brushless DC motors were put into use, which made the cost of high-power DC motors plummet, and electric transmission has developed by leaps and bounds in railway locomotives, while hydraulic transmission is limited by the power limitation of transmission components.

Therefore, no matter what kind of power Liang Yuan uses as the output core, there is actually only electric transmission in locomotive drive.

Northeast locomotive factory for so many years, the real technical research and development strength has long been gone, the original production of shunting machine is also purchased drive motor, the technical department of the car factory can only do some simple installation, commissioning, maintenance work.

In the production of 25S car bottoms, as long as the quality control is good, the equipment is advanced, and the raw materials are qualified, a group of technicians and blue-collar workers are enough to do it. The real power system will not be able to use this set again, and without a real R&D team, it will always have to catch up behind others, and even localization will be difficult.

"Uncle, a few years ago, the state has supported the construction of the third line, and there are many technicians who have gone out from Liaoning, and some of these people must have moved the idea of returning to their hometowns. We accept all the engineers who want to return home, which should be a win-win situation. Liang Yuan said with emotion.

At the end of the eighties, there was still the last trace of the old industrial base in Northeast China, such as China's first expressway Grand Expressway is under intense construction, Liaoning's infrastructure and living standards are still first-class in China, for some technicians living in the old, young, border and other third-tier areas, it is quite tempting to return to their hometowns.

In Liang Yuan's memory. The Ministry of Railways focused on supporting the Sichuan Ziyang Locomotive Factory, which was built with the assistance of the Dalian Locomotive Factory in the 60s, when the great man waved his hand. Countless hot-blooded young people gave up the privileged life in the big city and went to the old forests in the mountains to build equipment and warfare factories, and now those people are already forty or fifty years old. As we approach retirement age, it's normal for some people to want to go back to their roots.

"Xiaoyuan, how many people are you going to come over?" Liang Haiping asked.

How many people, Liang Yuan thought about the Canadian Bombardier consortium in his previous life, and the thousands of R&D personnel said slowly: "At least more than 100 people, Uncle can say to the ministry that although we have been recruited, the spirit of hard work and self-reliance will not be lost, and we will raise our own R&D funds, and the ministry is only responsible for transferring people." ”

There is a large flow of highly specialized talents like this. It is also possible only with the executive order of the Ministry of Railways.

"The high-voltage electrical block is not considered first, the localization of the electric transmission and car body structure of the 243 type head must be carried out in Benxi first, and the Zhuzhou factory can send employees over if it is in a hurry, and when we figure it out, the 243 type head will be dealt with as it is willing."

The two chatted all the way. It wasn't until Zhou Heng drove the car into the residential area of 909 that he negotiated the price of handing over the Type 243 electric locomotive to the Ministry of Railways.

"Uncle, Uncle Zhou, don't go to the hotel either, there is no one here today, my mother and Grandpa Wu are both in Nanhu Science and Technology Park and have not returned. You're here for a night. ”

Liang Yuan pushed open the door of Volga's car and said as he got out of the car.

Liang Haiping nodded, motioned to Zhou Heng to park the car under the courtyard wall of the community, and then stood downstairs with Liang Yuan and watched Zhou Heng park.

"Xiaoyuan, did you say that you have been thinking about the gas turbine developed by your mother for a long time. Liang Haiping looked at Liang Yuan with a smile and asked.

"Uncle, do you think that the gas turbine that my mother studied can be moved to the locomotive as power. Liang Yuan said with a wry smile.

Li Yuanling made the Spey gas turbine, and Liang Yuan intended to use the turboshaft engine as the locomotive power Although it is the same thing, but the power of the Spey is too big for the railway locomotive, with the current fuel consumption rate of 297 grams and kilowatts per hour of the Spey gas turbine, it needs to consume 2.8 tons of fuel per hour of operation, and this kind of fuel consumption will go crazy no matter which road bureau sees it, and there is no value of loading at all.

Liang Yuan told Liang Haiping about the fuel consumption of the Spey gas turbine, and then said: "Uncle, the advantage of the gas turbine is that it can reach full load operation in more than ten seconds after it is turned on, and it does not need to slowly increase the power like a diesel engine, but the disadvantage is also on this, the fuel consumption curve of this thing is basically horizontal, and the fuel consumption rate is about the same when running at full power and low power." ”

"Therefore, the gas turbine suitable for the installation of railway locomotives is best a low-power unit of 600 kilowatts to 1000 kilowatts, and a group of four power units are used when loading, and one or two of the gas turbines can be turned off when the locomotive continues to be pulled, so as to reduce the cost of locomotive. ”

"Can you install four gas turbines?" Liang Haiping asked suspiciously.

Liang Haiping has also seen the appearance of Spey gas turbines, which are more than seven meters long, more than two meters wide, and more than three meters high, and can be equipped with two in the sky in terms of the space of railway locomotives.

Liang Yuan smiled and said: "Uncle, the turboshaft engine I am talking about is only one meter long, half a meter high and half a meter wide, not to mention four, it can be installed in double." ”

"Uncle, don't expect my mother to make Spey smaller, that thing is too complicated. Liang Yuan looked at Liang Haiping and said as he wanted to speak and stopped.

"Uncle, don't you look like you're on a thief ship, my mother's gas turbine can't be counted on, you can count on others," Liang Yuan looked at Liang Haiping and said with a smile.

"Xiaoyuan, when can you change this habit, don't always say half of it, Uncle just finished bragging with the leaders of the ministry, and you told me that the power core of the gas turbine locomotive has no shadow yet" Liang Haiping said helplessly.

Liang Yuan grabbed his hair and said with some embarrassment: "This matter is a long story, I have been looking for information in the past few days, and I have come up with a clue to talk to my uncle in detail." ”

"Xiaoyuan still plans to go abroad to introduce technology," Liang Haiping asked.

Liang Yuan nodded and said: "This aspect still needs the cooperation of the ministry, and the uncle can tell the ministry that the gas turbine locomotive project mainly focuses on the Qinghai-Tibet Railway under construction." Can the ministry set up a research and development project for the Qinghai-Tibet Railway traction locomotive, and then hand over the project to the depot in the form of bidding, so that we can invest a lot of money in research and development?"

After being with Liang Yuan for a long time, Liang Haiping has a deeper understanding of Liang Yuan's style of doing things, and after thinking about it, he suddenly realized.

"Xiaoyuan, you are planning to use the guise of the Ministry of Railways to introduce the kind of small gas turbine you mentioned abroad. ”

"Tell my uncle which country I plan to go to this time, but it's a little far, and our foreign exchange is about to run out. Liang Haiping looked at Liang Yuan curiously

Without the big guise of the Ministry of Railways, how can Liang Yuan go to the international world to fool around the engine technology, looking at Liang Haiping with a curious expression, Liang Yuan stretched out his right hand, rubbed his thumb and index finger, and said with a smile: "Uncle don't worry, there will be land for the dollar." ”

Note 1: Brushed motors are prone to sparks when they are running.

This was reviewed for me, and it was changed for 10 minutes (to be continued......)

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