Winter Olympic Games “flying” torch in the “high-tech” gate valve length 110mm, net weight *290 grams

Winter Olympic Games “flying” torch in the “high-tech” gate valve length 110mm, net weight *290 grams

Beijing in the 2022 winter Olympic Games torch “flying” low carbon environmental protection of hydrogen as fuel, environmental protection and energy saving to complete zero carbon emissions, but the hydrogen is too bright, easy, easy to leak, aerospace science and technology group technical staff to build rocket technology transfer to the “small torch”, the torch of the narrow interior space “chuan” high pressure hydrogen, complete the “flying” stable and reliable lighting.

As the research and design enterprise of hydrogen and oxygen rocket engine in China, The sixth institute of China Aerospace Science and Technology Corporation, Beijing 11 Institute, undertakes the design of “flying” ignition system.
Referring to the indoor space of the “sample cloud” torch for the 2008 Beijing Olympic Games, Li Xin, technical director of the new torch project, a key engineering project of the Winter Olympic Games of China Aerospace Science and Technology Corporation, quickly led the team to design a basic principle sample of the torch.
However, compared with “sample cloud”, “Feiyang” slender and free body shape and hollow overall design, did give the R & D team a difficulty, “the basic principle sample is indeed successful, but the project sample research and development is a multi-faceted impact process, which is also the most difficult part”.
“Flying” has set limits on the appearance design, volume and net weight of the torch. In the initial design version of the team, the three high-pressure valves of the hydrogen pressure relief system software occupied the majority of the reserved volume and net weight. The development of pressure-relieving system software is a top priority, as the rapid reduction of high-pressure hydrogen gas at 420 pressure in a hydrogen storage tank to natural pressure is equivalent to raising the pressure from 4,200 meters deep to the sea level. It is also very difficult to complete this process in an area of more than ten centimeters.
“Fortunately, we have a strong basic knowledge of product development of ramjet, and have a thorough understanding of the corresponding ignition technology, overall design and raw material selection.” Li Xiaofeng, the leading team of Beijing 11 institute, said that strong technical integration ability, so that the technical team completed the integrated design of three sets of high pressure valves in the shortest time.
Through hundreds of experiments, under the condition of 20% increase in working pressure, the gate valve length from the initial 162mm to 110mm, net weight * 290g. The application of aerospace hydrogen storage technology ensures the safety factor of high pressure hydrogen storage. The team also integrates the torch specifications to design the flame stabilizer and other equipment, and tries to use every millimeter of the interior space. Different from the traditional torch, the “flying” lighting mouth is also mutually matched with the torch appearance design design scheme, the fire mouth is located in the gap between the inside and outside the ribbon, so that the flame shows the shape of whirling along the ribbon edge, and becomes the broadening of the torch appearance design.
Ultra-low temperature, high wind, heavy rain, falling a series of rigorous detection, “flying” are based on. “The ‘flying’ internal structure of the ** can only be described as tightly closed, not a millimeter more can be squeezed in.” Li Xin exclaimed.
“If the country has to, everyone will be at the forefront.” Beijing 11 advantage YueWenLong said, in “the winter Olympic Games torch important handheld system software technology” in the new product development project, the technical team took the national important space engineering daily task “to ensure all safety concerns god” motivation, rendering the space overall strength and its aerospace YanShen fine solid work attitude.