"Zhejiang Science and Technology" shines in the Winter Olympics

At this Winter Olympics, the hard-core technology and intimate service of many enterprises in our province surprised this world's top sports event "intelligent manufacturing". Today, let's take a look at some of the "Zhejiang elements" that debuted at the Winter Olympics and feel the charm of "Zhejiang Intelligent Manufacturing".

Made in Zhejiang to hold up the "big snowflake"

At the opening ceremony of the Beijing Winter Olympics, the scene of lighting the main torch brushed the screen. The ingenious Winter Olympics main torch volley stunned the world, and behind this difficult aerial action is the hard-core technology of "Made in Zhejiang".

"The main torch ground device system created by Dafeng is composed of an LED chassis, a main torch auxiliary flip lifting device and a step step lifting device, and through our self-developed precision control system, a series of lifting and vacating actions can be completed." Fenghua, chairman of Zhejiang Dafeng Industrial Co., Ltd., said with pride.

The Olympic flame ignition method has always been a stage for science and technology display in the host country. At the Beijing Winter Olympics, the main torch flip lifting device drive system is equipped with 4 sets of large and precise gears and racks, with a total rack length of about 9 meters. Moreover, the lift-off of the main torch is not a simple up-and-down helicopter, but to complete complex curve movements such as lifting and descending at different heights and rotating at different angles, so that the difficulty coefficient is very high. "We spent more than a year overcoming all kinds of technical problems, like the rack system, we made full use of the ingenuity of 'four or two strokes' to design, and finally presented a beautiful arc, steadily lifting 8 meters high." The relevant person in charge of the Dafeng team was introduced.

In addition to the torch system, another "black technology" that runs through the entire Winter Olympic schedule, the glow stick, also comes from Dafeng.

At the Wukesong Sports Center and the National Gymnasium, a glow stick is placed on each seat. "Each individual glowstick has 256 colors, and we create content in the cloud, using these light sources to turn the entire auditorium into a giant screen with different ambience patterns." Gan Lihong, director of the Dafeng Engineering Technology Center, told reporters. In addition, the seating system of 75% of the venues with spectator seats in the Winter Olympics is also "Daiho-made".

The Jingning pipe paves a large ice rink

The National Speed Skating Hall, also known as the "Ice Ribbon", is the only newly built ice competition venue at the Beijing Winter Olympics, and the first speed skating venue in the history of the Winter Olympics to use carbon dioxide transcritical direct cold ice making technology. As a supplier of stainless steel tubes made on the ground of the National Speed Skating Hall, the pipes produced by Zhejiang Chuangyue Metal Material Co., Ltd. appeared on the "ice and snow track" of the Winter Olympics.

"The company provided more than 100 tons of ultra-long seamless stainless steel ice pipes with a total length of more than 120 kilometers for the Winter Olympics, and provided cooling for the 12,000 square meters of ice surface of the National Speed Skating Hall." Chen Weiguang, chairman of the company, said that if the national speed skating hall is imagined as a large refrigerator, the pipes produced by the company are buried under the ice surface of the stadium, and the liquid carbon dioxide flowing through the pipes can effectively ensure that the temperature difference between the ice surface does not exceed 0.5 degrees Celsius.

According to the requirements of the construction of the national speed skating hall, the ice pipe has strict regulations, the outer diameter of the pipe coil of the two specifications is 20 mm and 18 mm respectively, and the wall thickness should be accurate to 2 mm. The length requirement is the biggest difficulty. "The longer the length of the stainless steel ice tube, the fewer the connection seams, and the more stable and safe it will be when used. However, the longer the length of the steel pipe, the higher the technical requirements, and there are only 4 enterprises in the country that can make ice pipes with a length of 51 meters, and we are one of them. Chen Weiguang introduced.

The "Heart of Ningbo" helps buses save energy

It carries 46 passengers, has a design speed of 100 kilometers per hour, and has a pure hydrogen range of about 450 kilometers. In the past few days, in the Yanqing area of the Winter Olympic Games, a group of hydrogen energy buses that provide connection services for athletes and staff have begun to operate busily. Compared with traditional fossil energy vehicles, these hydrogen energy buses can reduce carbon dioxide emissions by about 57 kilograms per 100 kilometers, which can be described as "green travel".

These hydrogen energy buses were developed by the State Power Investment Hydrogen Energy Corporation and Yutong Bus, and the fuel cell power system as the "heart" of the bus was mainly developed and produced in Ningbo.

"The Winter Olympics is not only a stage for ice and snow sports competitions and exchanges, but also a track for countries to compete for scientific and technological innovation capabilities. In the field of new energy vehicles, we want to show China's strength to the world. In the product exhibition hall of the State Power Investment Ningbo Green Kinetic Hydrogen Energy Technology Research Institute located in Jiangbei District, Ningbo City, chen Ping, the person in charge, said.

"Hydrogen fuel cells consume hydrogen and oxygen, which generate electricity through electrochemical reactions. We must develop customized new technologies and new processes according to the special needs of the Winter Olympics to ensure that hydrogen buses run fast and stably. Engineer Wang Junyu introduced.

During the Winter Olympics, the minimum outdoor temperature can reach minus 20°C, which challenges the cold start performance of the vehicle. Through repeated experiments and improvements, Wang Junyu and his colleagues innovated and adopted a thick difference polarization strategy, which can obtain a larger thermal load output under the same output power conditions to ensure the rapid success of cold start.

Watching the self-developed hydrogen energy bus pass through the Winter Olympics, Chen Ping felt very proud. "The appearance of the Winter Olympics is only the first step, in the future, we must continue to take technological innovation as the driving force, and accelerate the opening up of the whole industrial chain of hydrogen energy from research and development to commercial applications."

"Jiaxing Wisdom" research and development of net red bed

When athletes from all over the world gathered in the Beijing Winter Olympic Village, a "Jiaxing-made" smart bed became a "net red" and was "sunburned" by the athletes.

On January 28, after sledders from the United States stayed in the Beijing Olympic Village, they posted a short video on their personal social platform to praise the smart bed. In the video, she holds a bed remote control with 8 buttons, demonstrating a variety of rest modes of smart beds, which can easily adjust the height of the bed and bed, "TV mode" can make the bed head adjust to a state close to the sofa, and select "reading mode" to change the beach chair in seconds. To her surprise, the bed also supports a "zero gravity" model.

This wonderful smart bed is produced by Qisheng Technology Co., Ltd. in Xiuzhou, Jiaxing. "The 'zero gravity' model is to lift the head and feet of the human body to a specific angle, so that the heart and knees are at the same level, which is conducive to promoting blood circulation, allowing the body and muscles to be fully relaxed, and helping athletes rest better." Qisheng technology staff said that the smart bed is also equipped with a bedside stool, which can lengthen the bed to 2.4 meters, can carry 340 kilograms, after 10,000 times of weight testing, large athletes can also be assured to use.

How does Qisheng Technology "get involved" with the Beijing Winter Olympics? According to reports, the sense of science and technology highlighted by the Qisheng Technology Smart Bed coincides with the concept of "Science and Technology Olympics", and has been affirmed in the preliminary research of the Beijing Winter Olympics Organizing Committee. "This time, we have equipped a total of 6300 smart beds for the Beijing Winter Olympics. In addition, in order to provide a space for media workers to rest and work, we have also added 30 sleeping and resting pods to the main media center of the Winter Olympics, and the mobile phone can be scanned to experience itself. ”

The core components of the boots come from Jiaxing

The body and mind are warm, and the feet are more powerful. The soles of the feet are warmer and the steps are more stable. Before the opening of the Winter Olympic Games, a well-known brand announced a hot snow sneaker specially provided for the Chinese national team of the Winter Olympic Games, which was developed by Jiaxing Jizhan Technology Co., Ltd. (hereinafter referred to as "Jizhan Technology"), a talent enterprise in Haining, after two years of research and development.

Jizhan Technology is a high-tech innovation company focusing on the design and manufacture of flexible stretchable electronic devices. He Lei, the founder of the enterprise, said that it is precisely the unique patent of Jizhan Technology - flexible stretchable battery, a well-known brand company has thrown an olive branch, and wants to ensure that the boots are in the snow at minus 25 ° C through the blessing of this "black technology", and continue to provide 2.5-5 hours of heat and heat preservation effect for Chinese ice and snow athletes.

In fact, in addition to providing electronic components for the boots of Chinese ice and snow athletes, Jizhan Technology also provides volunteers of the Winter Olympics with intelligent heating knee pads and socks independently developed and produced by it, as supporting items for the Winter Olympics.

The medal ribbon is made in Zhejiang

The Beijing Winter Olympic medal ribbon comes from Zhejiang, and the manufacturer is Wanshili Silk in Hangzhou.

Careful observation of the medal ribbon: with the dignified atmosphere, classical and warm "Chinese red" as the main color system, and the 2008 Beijing Olympic Games medal ribbon is in the same vein; the emblem of the Beijing Winter Olympic Games, the core graphic and the words "BEIJING 2022" can be clearly seen on the shading.

In October 2020, Wanshili received a special "order" - custom production of 1600 2022 Beijing Winter Olympics (Winter Paralympic Games) medal ribbons.

After receiving the task, Wanshili and the ribbon design unit conducted several rounds of in-depth discussions on fabric performance, pattern pattern and color presentation. In the past year, after hundreds of proofings and revisions of the design draft, the plan was finally determined: based on traditional Chinese culture, silk culture and the humanistic feelings of the Beijing Winter Olympics, green and low-carbon environmental protection technology was integrated, and a "most Chinese" medal ribbon was presented to the world.

The Wanshili team chose to use 100% silk as the ribbon material, and the raw materials used 6A top mulberry silk, which made the ribbon perform excellent in terms of softness and gloss. Silk is like water, the fabric is soft, but it lacks a sense of structure. To this end, the team members went to Suzhou many times to find Qian Xiaoping, a national inheritor of the intangible Song brocade weaving technique. Under her guidance, the "ice and snow pattern" weaving fully absorbs the craft characteristics of Song Brocade with the warp and weft threads at the same time, so that the pattern is better highlighted and supports the ribbon like "bones and bones".

The net weight of each medal in this Winter Olympics is about 550 grams, and the overweight medals are hung vertically, and the ribbon is prone to deformation due to force stretching. After months of experimentation and testing, the team developed a new fabric that would allow this "small, beautiful" ribbon to withstand items weighing 90 kilograms without breaking.

In the ribbon manufacturing process, the team also incorporated a new technology of GBART green printing and dyeing based on color digitization, with special treatment of dyes and silk fabrics so that they can be firmly fixed to the fabric fibers. This technology not only makes the color reproducibility reach 99%, compared with the traditional printing technology, but also eliminates the washing process, realizes the emission reduction of pollutants such as sewage and ammonia nitrogen, and fully demonstrates the concept of the Green Winter Olympics.

Source: Provincial Science and Technology Publicity and Education Center synthesized from Zhejiang Daily, Jiaxing Release, Zhejiang Micro Sports, etc

Editor: Zhang Qiaoqin