Picture: Zhou Li (first from right) and his team members study the technical problems of bogies of high-speed trains.
Photo courtesy of China State Railway Group***.
Photo: Li Junhua (middle) and his team discuss the scientific issues of pollution reduction and carbon reduction.
Courtesy of Tsinghua University.
Figure: Fu Ling (left), head of Zoomlion's hoisting machinery technology innovation team, discusses with colleagues.
Photo courtesy of Zoomlion shares.
Figure: The R&D team of high-voltage flexible DC transmission technology of Southern Power Co., Ltd. conducts research in the laboratory.
Photo by Xu Jianjun. Pictured: Aerial view of the terminal of Beijing Daxing International Airport.
Courtesy of Beijing Architectural Design and Research Institute***.
Figure: Panorama of China's Sky Eye.
Photo by Xinhua News Agency reporter Ou Dongqu.
China State Railway Group's R&D and innovation team for Fuxing high-speed train——
Build a world-leading high-speed train.
Behind the "Fuxing" is the unremitting struggle of the R&D and innovation team of the Fuxing high-speed train. With the responsibility of promoting railway scientific and technological innovation, they have overcome difficulties and forged ahead, forming a large number of scientific and technological innovation achievements represented by the Fuxing EMU.
In 2012, China started the early development of China's standard EMU design. Zhou Li, the person in charge, led the R&D and innovation team of the Fuxing high-speed train to carry out technical research.
In order to master the key core technology in his own hands, Zhou Li put forward the idea of "forward design" and established China's own EMU technology platform. Today, among the 254 important standards adopted by China's standard EMUs, Chinese standards account for 84%, and the overall design and key technologies are all self-developed, with completely independent intellectual property rights.
Soon after the Fuxing high-speed train was put on the test, there was an occasional 300 microsecond communication interruption failure. The team organized experts to carry out follow-up repairs overnight. After 168 hours of perseverance, the team caught another fault phenomenon, quickly found a solution, and successfully eliminated the problem.
From comprehensively overcoming the core technology of traction braking and network of high-speed trains, to breaking through the continuous high-speed and high-performance transportation technology; From building a high-end design, manufacturing, operation and maintenance platform for Fuxing high-speed trains, to creating technical standards and test and verification systems for high-speed trains, ......The R&D and innovation team of the Fuxing high-speed train has made breakthroughs in a number of key core technologies, and 96 major equipment in 11 systems have adopted unified Chinese standards and models. Compared with the existing EMUs, the Fuxing high-speed train has an 8% increase in stability, a 20% reduction in energy consumption, a 50% increase in the service life of the whole vehicle, and a 25% extension in the maintenance interval.
In July 2016, two trains on the Zhengxu high-speed railway line successfully rendezvous and reconnect at a speed of 420 kilometers per hour, marking that China has fully mastered the core technology of high-speed railway; In June 2017, the Chinese standard EMU "Fuxing", with a speed of 350 kilometers per hour, officially made its first two-way de......but on the Beijing-Shanghai high-speed railway lineEvery milestone of "Fuxing" is a condensation of the wisdom and sweat of the team. Now, they are aiming at the future development of high-speed railways and carrying out a new generation of EMU CR450 scientific and technological innovation projects.
Tsinghua University Air Pollutants and Greenhouse Gas Collaborative Control Team——
Contribute to the protection of beautiful blue skies.
Since the 18th National Congress of the Communist Party of China, China has made historic achievements in improving air quality, becoming the country with the fastest air quality improvement rate in the world.
The beautiful blue sky is inseparable from the support of engineering science and technology. Tsinghua University's Air Pollutants and Greenhouse Gas Collaborative Control Team is one of the representatives. For more than 20 years, the team has been committed to the research of in-depth treatment of flue gas in industrial furnaces, purification and recycling of organic waste gas, and pollution reduction and carbon reduction of flue gas of coal-fired boilers, and has made major breakthroughs in the field of in-depth treatment of multiple pollutants and collaborative carbon emission reduction, forming a complete technological innovation chain with independent intellectual property rights.
There are many types of industrial furnaces and kilns in non-power industries such as steel, building materials, cement, glass, etc., and the processes and fuels are also different, resulting in large fluctuations in flue gas emission temperature and extremely complex flue gas composition, including major pollutants such as sulfur, nitrate, dust, etc., as well as unconventional pollutants such as mercury, etc., which bring great challenges to comprehensive treatment.
Li Junhua, the team leader, proposed a new concept - to achieve collaborative and in-depth treatment of multiple pollutants on one material and one equipment, which requires the development of new catalyst materials. After thousands of experiments, the team finally developed a cost-controllable catalyst material.
Pollution control requires a combination of technical, social and economic feasibility. In order to make the scientific research results go to the application, the team actively promotes the construction of demonstration projects. In the early stage of R&D, the team used a small-scale experimental platform to unload and fill activated carbon in the container every 4 hours. In the summer, the temperature inside the container reached 50 degrees Celsius, and people sweated as soon as they entered, but none of the members stopped the experiment. After a year and a half of research, they finally found the best technical solution.
Today, the team has built a number of in-depth treatment demonstration projects in ceramics, refractories, coke, carbon, nonferrous metals, petrochemicals and other industries, and the results have been promoted and applied in more than 1,600 industrial furnaces and kilns in key industries such as Baosteel, Anshan Iron and Steel, and China Building Materials, reducing air pollutants by about 3 million tons per year, directly supporting the introduction of 25 national policies and industry standards, and achieving good economic and social environmental benefits.
China's air quality has improved significantly, but it is still necessary to continuously reduce costs and further reduce greenhouse gas emissions in terms of pollution control. We will continue to collaborate and innovate, promote interdisciplinary cooperation, and continue to contribute to the protection of beautiful blue skies. Li Junhua said.
Beijing Architectural Design & Research Institute's *** super architectural engineering design innovation team——
Hold up many "super projects".
On September 25, 2019, Beijing Daxing International Airport, which is like a phoenix spreading its wings, was officially opened. The first terminal building with a radial configuration in the center of the five-finger corridor, and the first terminal building with a double-storey departure and double-arrival floor layout, ......Behind many "world firsts" are a series of world-class problems faced in the design and construction process.
As a super transportation hub for air-rail intermodal transportation, there is a 16-station rail station with 8 stations under the terminal, and when the train travels at a high speed of 250 kilometers per hour, will passengers in the building feel the vibration? Will the resulting tunnel wind have an impact on the structure? In the face of challenges, the Beijing Municipal Institute of Architectural Design and Research, which undertook the construction task, rose to the challenge.
Through bold theoretical innovation and rigorous technological innovation, we have proposed a new form of combined seismic isolation of foundation seismic isolation and layer isolation seismic isolation, established a super-large plane combined seismic isolation design method, realized a major technological breakthrough in the R&D and production of large-diameter and large-stroke seismic isolation products in China, and achieved a number of innovative achievements with independent intellectual property rights. Xu Quansheng, the team leader and chief architect of the Beijing Construction Institute, said.
China's Sky Eye is the world's largest single-aperture radio telescope. Since 2011, the team has undertaken the design task of the main supporting structure of the active reflective surface of China Sky Eye, tackled a number of structural technical difficulties, and a number of design technologies have reached the international leading level, making important contributions to the successful completion of China Sky Eye.
In recent years, the super architectural engineering design innovation team of Beijing Architectural Design and Research Institute has kept pace with the times and innovated, solved the world's problems in many engineering and technology fields, and held up many "super projects".
Xu Quansheng said: "We will continue to insist on cultural innovation and technological innovation go hand in hand, and create more super buildings worthy of the times and highlighting Chinese characteristics." ”
China Southern Power Grid Co., Ltd. UHV flexible DC transmission technology R&D team——
Open up the "main artery" of power transmission
In 2020, the key project of west-to-east power transmission - Wudongde Power Station Power Transmission Guangdong Guangxi UHV Multi-terminal DC Demonstration Project (hereinafter referred to as "Kunliulong DC Project") will be put into operation. Spanning 1,452 kilometers of alpine rivers and lakes, this "artery" of power that carries abundant hydropower from the Wudongde Hydropower Station to the power load centers of Guangdong and Guangxi has created "world firsts" in 19 power technology fields.
Kunliulong DC project is the world's first UHV multi-terminal flexible DC project, and the flexible DC transmission technology adopted in the project is a very cutting-edge and challenging technology in the field of electric power. Since 2012, the R&D team of Nanfang Power's high-voltage flexible DC transmission technology has continued to tackle key problems, built the world's first real-time analysis platform for panoramic power grids, and successfully built China's independent UHV flexible DC technology system.
The line has to pass through a complex geographical environment, more than 1,000 kilometers of overhead lines, and we need to be in 0Automatically realize the removal of overhead line faults within 5 seconds. Rao Hong, a member of the team and an academician of the Chinese Academy of Engineering, used such an example to illustrate the "difficulty" of the Kunliulong DC project. However, the seemingly "impossible" problems did not stump the team. "Programs are written over and over again, and trials are repeated over and over again, and sometimes it's really boring. But we just have to sit on the cold bench and do things in the spirit of doing one thing well in our lives. Team leader, academician of the Chinese Academy of Engineering, Li Lixun said.
At the beginning of the launch of the West-to-East Power Transmission Project, China's DC transmission project mainly relied on imported technology. At that time, Li Lixun and his team realized that to ensure China's energy and power, it was necessary to solve the problem of power transmission and firmly grasp the DC transmission technology in their own hands. For more than 20 years, they have always focused on the needs of power development and promoted China's DC transmission technology to achieve leaps and bounds: from 500 kV to 800 kV; From DC, flexible DC, to promote DC technology into a new stage of UHV flexible DC ......
We will develop China's energy resources well and contribute to the development of the country. Li Lixun often said. Today, this team has brought together multidisciplinary talents from the fields of electric power, materials, equipment, control, computers, etc., formed an echelon structure of "passing on the help" of the old, middle and young people, and built a number of national technology platforms, and is moving towards the goal of continuously enriching and expanding the national strategic talent force in the energy and power industry, building a talent highland in the energy industry value chain, and accelerating the construction of a new power system and a new energy system.
Zoomlion's first-class hoisting machinery technology innovation team——
China's hoisting machinery leads the industry trend.
In the construction of nuclear power plants, the hoisting of domes weighing hundreds of tons is an extremely critical part. In the past, large-tonnage cranes, especially crawler cranes above 3,000 tons, relied on imports for a long time.
In 2009, Zoomlion established a project to develop a 3,200-ton crawler crane. "Only independent research and development can solve the problem of nuclear power construction equipment being controlled by others. Fu Ling, head of the lifting machinery technology innovation team and chief engineer of Zoomlion, said.
Consult a large number of literature, after a large number of design calculations, long-term travel in processing workshops, testing laboratories ......One by one, technical problems were overcome, and the team ushered in a bumper harvest: in 2011, the 3,200-ton crawler crane was successfully rolled off the assembly line, setting a new record for the largest tonnage of domestic crawler cranes in one fell swoop. When the thin-shell dome with the largest radius and the heaviest weight fell accurately at the Tianwan Nuclear Power Plant in Jiangsu, the experts and engineers in the observation room burst into tears.
To make construction machinery, it is necessary to walk into the "three sites" - customer site, test site, and construction site. Yu Lekang, a member of the team and deputy general manager of Zoomlion Construction Hoisting Machinery Branch, has always adhered to this principle, and his colleagues commented that he is "extremely pursuing perfection" because of his strict requirements for technology. Also sticking to the front line, there is Liu Yuxin, deputy general manager of Zoomlion Engineering Hoisting Machinery Branch, who relayed key problems on the spot, and he and his team overcame a number of key technical problems.
Representative lifting machinery such as "Steel Rose" blooms one after another: the world's largest tonnage 2,400-ton all-terrain crane, supporting the development and utilization of national wind power renewable energy; The world's first over 10,000 tons of rice 1The 20,000-ton tower crane stands at the construction site of the Changtai Yangtze River Bridge, the world's largest span cable-stayed bridge for road ......and rail
In recent years, lifting machinery is developing in the direction of super-large, refined, digital, intelligent and green. "We are confident that we will continue to lead the industry. Fu Ling said.
The National Astronomical Observatories of the Chinese Academy of Sciences China Sky Eye Engineering Team——
Deep in the mountains, the "important weapon of the country" is cast
The year 2023 that has just passed is another year full of harvest for the China Sky Eye Engineering Team of the National Astronomical Observatories of the Chinese Academy of Sciences. Among them, the achievement of "discovering the key evidence for the existence of nanohertz gravitational waves" was selected by Science magazine as one of the top ten scientific breakthroughs in 2023.
Since its establishment in 1994 by Nan Rendong, the "People's Scientist", the team has undertaken the important task of construction, commissioning and operation of China's Sky Eye. Over the past 30 years, this team has been sticking to the mountains of Guizhou all year round, and has made outstanding contributions to the construction and efficient operation of China's Tianyan on time and with good quality, and has achieved a series of major scientific achievements.
The design and construction of China's Tianyan is unprecedented, and there is no experience to learn from. "How to design, how to implement, how to debug and use after completion, all the problems can only be solved by ourselves. Jiang Peng, chief engineer of China Tianyan Operation and Development Center, said.
Not long after the project started, the team encountered a big problem - cable net fatigue. In order to solve this problem, Jiang Peng led the team to start a two-year large-scale cable fatigue experiment. After nearly 100 failures, they finally developed an ultra-high fatigue-resistant steel cable, which successfully supported the "retina" of China's Tianyan.
Relying on this spirit of innovation and not being afraid of failure, the team has overcome a number of world-class technical problems: the world's only super-large cable net structure with active displacement working mode has been developed; The world's largest span of flexible cable-driven feed high-precision positioning system ...... has been built
At present, more than 840 pulsars have been discovered by China's Sky Eye, which is more than three times the total number of pulsars discovered by all other telescopes in the world during the same period, and a series of world-class achievements have been produced in the fields of pulsars, fast radio bursts and gravitational wave detection.
Speaking of the future, Jiang Peng said: "I hope that China's Tianyan will produce more scientific achievements and contribute more Chinese wisdom to human civilization." ”
*: People's Daily Online, People**.