Breaking the global record! Core equipment for starting the supergravity experimental device
2025-10-05
In the underground hall located 15 meters above the ground in the hinterland of the West Hangzhou Science and Technology Innovation Corridor in Zhejiang Province, a thick and long rotating arm slowly starts and gradually accelerates. In the experimental chamber at the end, an astonishing acceleration of 300 g (constant gravity) is causing the movement of matter to unfold at a speed of "ten thousand years at a glance". With the roar, the core equipment of the first national large-scale scientific facility in Zhejiang Province, the High Gravity Centrifugal Simulation and Experiment Facility (CHIEF), was officially launched recently. CHIEF, led by Zhejiang University, has been evaluated by the magazine "Physical World" as the "most powerful centrifuge in the world". The CHIEF1300, which is now the first to start running, has a capacity of 1300g · t (gravitational acceleration · ton), breaking the global record. What is supergravity? The weightlessness and dizziness during a roller coaster dive, as well as the pressure on the chest during an airplane climb, are all everyday experiences of high gravity that people can perceive. But in the CHIEF experimental module, researchers can magnify this experience hundreds or thousands of times to simulate extreme processes that cannot be directly observed in reality. "We hope that through the regulation of centrifugal acceleration and load, we can build a multiphase media movement experimental environment from transient to ten thousand years, from atomic level to kilometre level, from normal temperature and pressure to high temperature and pressure." Chen Yunmin, chief scientist of CHIEF, academician of the CAS Member, and professor of Zhejiang University, introduced that this device can accelerate the presentation of geological evolution, landslide collapse, deep-sea energy exploitation, new material solidification and other scenes in the laboratory. As a "model machine" that connects the past and the future, CHIEF1300 achieved a maximum acceleration jump from 150g to 300g, an increase in rotation radius from 4.5 meters to 6 meters, and an increase in capacity from 400g · t to 1300g · t. Chief Engineer Ling Daosheng introduced that the team creatively proposed a structural system of "upper and lower end support, three guide hydraulic bearings" and independently developed the world's largest flange diameter vacuum temperature control system to solve the problem of massive heat dissipation during high-speed operation. CHIEF1300 is equipped with an unbalanced force dynamic adjustment system that can automatically compensate during the experimental process, ensuring stability during high-speed rotation. ”He said that this lays the foundation for conducting more complex dynamic experiments in the future. The birth of this' super machine 'was not easy. Ultra high speed operation, longer robotic arms, and more extreme working conditions mean that there is no ready-made experience to follow. In order to ensure the safe operation of the equipment, the R&D team collaborates across disciplines and needs to solve problems in structural systems, vacuum sealing, dynamic balancing, and material processes. Every rotation of this machine embodies the hard work of hundreds of researchers, "sighed the project team members. The multidisciplinary platform of Zhejiang University brings together scientists and engineers from fields such as construction engineering, control, software, energy, materials, etc. They provide new solutions for CHIEF's complex systems with cross-border intelligence. With the launch of CHIEF core equipment, 18 sets of independently developed airborne experimental devices were also unveiled. Among them, 6 are internationally pioneering, and 12 have reached the international leading level. They are like CHIEF's "Eighteen Martial Arts", providing support for exploration in different disciplines - the wave making and howling and gravity flow experimental device can simulate the interaction between a 20 meter high tsunami and the seabed, revealing the mechanism of underwater disasters; The deep-sea high-pressure temperature control experimental device can truly reproduce the natural gas hydrate extraction process, providing key data for energy development; The supergravity vibration table is the most powerful equipment of its kind internationally, capable of revealing the seismic disaster patterns of complex sites at a hundred meter scale; The supergravity directional solidification melting furnace opens up new avenues for the research and development of new materials, producing denser and higher quality alloy materials; The 500 km/h high-speed railway subgrade dynamic effect device will provide scientific verification for the construction of high-speed railways. In high-speed centrifuges, the superposition of multiple factors allows researchers to explore scientific frontiers that cannot be reached under conventional experimental conditions. Chen Yunmin metaphorically said, "It's like having Sun Wukong somersault in a centrifuge." CHIEF is not only a tool for scientific exploration, but also a support for national strategic needs. Disaster prevention and mitigation, energy development, urban construction, material innovation... These fields that urgently need breakthroughs can all find research paths in the "supergravity field". While accelerating the construction of CHIEF, the Ministry of Education has issued a letter supporting the establishment of the "National Center for Supergravity Field Science (in preparation)". Zhejiang University has also established the Institute of Supergravity Science and Technology, bringing together multidisciplinary forces to jointly promote interdisciplinary research. The Physical World commented that the construction of CHIEF has enabled China to "step into the forefront of the world" in the field of supergravity science. (New Society)
Edit:luoyu Responsible editor:Jiajia
Source:GMW.cn
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