However, the mayor in charge of Shengjing Municipal Engineering University is very supportive of the choice of science and technology parks, recognizing that these five automatic snow sweepers have effectively promoted the modern image of Shengjing City.
Liang Yuanli stretched himself and went to the window. He gently pulled the hotel window equipped with pneumatic support rods and slowly opened it.
Positioning the opening range of the outer window as the width of the palm of your hand, a cold wind mixed with several snowflakes squeezed in from the window.
Liang and Ning didn’t go back to the nearby scientist garden, but Shangri-La Hotel asked for the temporary residence of two suites years ago.
"Be careful to catch a cold when blowing through the window in winter" Li Yuan Lingyin sounded from behind Liang Yuan.
"The room is very hot and can’t be adjusted." Liang Yuan muttered 1.
Before Liang Yuan turned around, a thick feather wrapped himself tightly.
"I can tell at a glance that mom is my own mother. Just now, I blew my hair in the window. My dad turned his eyelids and ignored me. I went directly to the health as if I had picked it up."
Someone has the audacity to kiss up to his mother.
Li Yuanling satisfiedly smiled and tugged at Liang Yuan’s ear and said with a smile, "How’s mom’s boiler burning well?"
The gas turbine from Sibei was produced by the Science Park, and the ed125 gas turbine was put into trial operation with the delivery of Shangri-La Hotel and Scientists Garden. After the heating heat from Shangri-La Hotel was exhausted, the heat from ed125 gas turbine was exhausted.
This named first-phase supporting project of Changbai Experiment has four full-power ed125 gas turbines, with a total capacity of 5 MW, which is enough for Shangri-La Hotel, Scientists Garden, Lego Water Park and Science Park.
After three years of research, Brilliance Power, led by Li Yuanling, has thoroughly mastered the Spee turbine. Two years ago, Brilliance sold two ed12 units to Lanhua, and cut the top of the double-turn Spee engine to form a gas turbine on the ground.
However, the fan design of the latest ed125 gas turbine has outstanding talent. Li Yuanling completely abandoned the original five-stage low-pressure intake fan of Spey’s engine and changed the whole low-pressure compressor into a three-stage low-pressure compressor and a three-stage medium-pressure compressor. If a little adjustment is made to the high-pressure compressor, the new ed125 gas turbine will change from a double-rotation type to a three-rotation type in one fell swoop.
Compared with double-rotating, the air intake of the three-rotating unit is greatly increased after adding the medium-pressure compressor. The design of the core machine remains unchanged. More air intake represents a lower pre-vortex temperature, while the lower pre-vortex temperature represents a longer service life and greater power rise potential.
Of course, the lower fuel consumption of the unit and the greater shock relief of the unit caused by smooth air intake are also one of the advantages of the three-turn design.
More importantly, the ed125 gas turbine is independently produced by Yuanjia from the simplest screw to the most technically difficult gas guide vane.
Although a small number of heat-resistant alloys have been produced by laboratory trial production, this is a milestone breakthrough for Yuanjia’s aviation industry, which represents Yuanjia’s foothold in the aviation field.
There is no insurmountable technical difficulty for Li Yuanling, who has already completed the three-turn Spey unit on the ground, to apply the three-turn technology to Spey Airlines.
What does this mean?
If the heat-resistant material is the material basis of the excellent aero-engine, then the fan is the core of aero-engine design, and the name jet engine determines that the air flow is the most important design index to determine aero-engine.
Therefore, blades and fans made of blades have become the focus of Li Yuanling’s most energy in the past three years.
Sweeping blade, wide chord fan, axial flow stage blade rotation and three rotation have become the key technologies of Brilliance Power.
Around the intake area of Spey core engine and Brilliance key technology, Li Yuanling has worked out thousands of fan models for large-scale data verification, which has solved a series of basic problems such as the analysis of rotor surface pressure of large and small blades with swept blade tip loss, the calculation constant of subsonic region of wide chord fan and so on.
It can be said that at present, Li Yuanling is waiting for the computer line to verify the correctness of the empirical formula that Li Yuanling has explored through a large number of experiments in the past three years by calculating the strong operational analysis ability.
If it is verified that Li Yuanling’s previous work is correct, it can be said that Brilliance Power has conquered the core of the computer simulation field of aero-engine by itself, and the future will revolve around the output area of Sibei combustion chamber for two years. The root of a new aviation design is milli-pressure.
In the new technology, the success of axial flow stage blade rotation technology alone should be enough to shorten the length of Spey two-stage compressor by 4%, even if the intake efficiency is not considered, the weight ratio data can be improved obviously by reducing the weight.
The reference thrust of Rolls-Royce civil aviation engine production line is 55kn, and Spey 512 is produced by Rolls-Royce generation. At this time, Rolls-Royce’s popular junior is a Thai aircraft engine with thrust of 6269kn, while the thrust is as high as 6695knrb7, and Rolls-Royce and the Federal Republic of Germany are in the future.
In Yuanjia, it is very reasonable to achieve 2%-3% thrust after the deep modification of the existing heat-resistant material-based swept fan, three-rotor and some large and small blades. Once the technical index progress is successful, it means that the thrust of Minsberg will reach 66kn—71kn.
However, due to the insufficient performance of heat-resistant materials, Jiahang’s fuel consumption, noise and service life are certainly inferior to Rolls-Royce rb7, but it will certainly gain the first-world capability of Thai turbofan engine. The biggest improvement of Thai aero-engine starting system, ignition system, lubricating oil system, fuel response department and Spey consistent Thai is to replace the original low-pressure compressor of Spey with the low-pressure compressor of rb211 three-turn engine.
If Spey’s deep modification is successful, it means that Yuanjia has hit the big market of converting a Boeing 727 passenger plane into a cargo plane on this planet, which is a big market worth 7 billion US dollars with 3,000 aero engines missing.
The modified market of the historical plane was successfully swallowed up by Rollo, and a third of it was full of oil. Shortly after privatization, Rollo added a lot of research funds.
Of course, there is still a lot of work to be done to achieve this goal in Yuanjia. The design index of ed125 unit is still far from the level of Thai aero-engine. For example, the hot end of the gas generator of the unit has a service life of 25 hours. Although the whole unit is designed for condition-based maintenance, it must be stopped for maintenance at most 2 hours.
From the stricter standards, this gas turbine equipment is far from the international mainstream equipment level of the same level after 20 years.
Twenty years later, the service life of E-class gas turbines will be reduced by 5 hours, and the maintenance interval will be as high as 23 hours.
Fortunately, Yuanjia still has two years to pursue those high technical indicators. At this time, the international mainstream technical level of E-class gas turbines still stays at the hot end, making the service life 15 hours and 6 hours. It is as if you can bite your teeth and work hard at every level.
At this time, the technical level is highly likely to enter the competitive field, but it still has the feasibility of commercial application. The success of the three-turn technology has laid a solid foundation for the future.
Although the road is still tortuous, the future is bright ~ ~
Chapter 164 Curtain pull (13)
Li Yuanling and Liang Yuan are discussing the two snow sweepers in the distance of the hotel. After getting up early to wash, Comrade Lao Liang walked out of the health room leisurely.
Behind Liang Yuan, the two women talked for a while and Comrade Lao Liang said, "Xiaoyuan, I heard your brother-in-law say that these automatic snow sweepers cost a hundred thousand dollars. Is it too expensive?"
"Four or five million yuan is enough for the railway to sweep the snow for you for ten years." Comrade Lao Liang’s tone is full of regret
"Old Liang, are you going to let your son pay for the people in the branch to help sweep the snow?"
"Is there? The stream is not far from here. In the section, just grab two carriages and hang trucks. It takes three hours to transport hundreds of people. It will never take half a day to finish the snow sweeping in the science park. "
Liang Jiangping didn’t brag about railway snow sweeping, but it was the most professional in the Republic. It has always been snowing for so many years. Liang Yuan alone can remember three or four times because of the snow in the New Year’s Eve. they nest, a railway worker, resigned from the old year and welcomed the new year.
"That’s a good idea, but Lao Liang, your price is really black. Haiping has already offered Lu An $100,000 to sweep the snow at one price for 20 years without a discount." Li Yuanling said with a smile.
"I’m not his old? A word is not worth his $40,000? " Liang Jiangping also asked with a smile
"Look at your little promise. It’s hard to get a handful of Joe. It’s not enough to pull the compressor."
The price of a set of Spey k512 turbofan is $20,000, and the price of a set of compressor is $1 million. Li Yuanling’s reason for despising Comrade Lao Liang is absolutely justified.
Liang Yuan walked over and listened to his parents’ bickering for a while before interjecting that "Qian Yuanjia, who bought an automatic snow sweeper, can’t realize that the car purchase money comes from the Federal Republic of Germany. The way of discount loans is only limited to the Federal Republic of Germany. The Germans will definitely not approve it if they buy it back from various merchants."