Gas purification equipment manufacturers introduce the functions and uses of helium gas

Helium, abbreviated as He, has an atomic number of 2 and an atomic weight of 4.002602. It is a colorless, odorless, tasteless, inert monatomic gas.

The element name comes from Greek and originally means' sun '. In 1868, French scientist Janssen used a spectroscope to observe the surface of the Sun and discovered a new yellow spectral line, which he believed belonged to an unknown element on the Sun, hence the name helium. Helium is typically a colorless and odorless gas that cannot solidify at standard atmospheric pressure. Helium is an inert element in Z. The application of helium is mainly as a protective gas, working fluid for gas cooled nuclear reactors, and ultra-low temperature refrigerant.

On February 6, 2017, the team led by Wang Huitian and Zhou Xiangfeng from Nankai University in China, along with their collaborators, published a paper in Nature Chemistry on the synthesis of sodium helium compound Na2He under high pressure conditions [1] [2], ending the history of helium without compounds and marking China's forefront in the field of rare gas chemistry.

Due to its light weight and non flammability, helium can be used to fill airships, balloons, thermometers, electronic tubes, diving suits, and more. It can also be used as a protective gas for atomic reactors and accelerators, lasers, rockets, smelting and welding, as well as for filling light bulbs and neon tubes, and also for making foamed plastics.

Due to its low solubility in blood, helium can be added to oxygen to prevent decompression sickness, used as a breathing gas for divers, or for treating asthma and suffocation.

The temperature of liquid helium (-268.93 ℃) is close to zero (-273 ℃), so it is used as a superfluid in superconducting research to manufacture superconducting materials. Liquid helium is also commonly used as a coolant and refrigerant. In medicine, argon helium knife is used to treat cancer. It can also be used as a component of artificial atmosphere and laser media.