What is the difference between liquid helium and high-purity helium?

Helium, liquid helium

For ordinary people, they believe that liquid helium and gaseous helium are the same thing, both in terms of properties and applications. The knowledge we learn about helium is generally about gaseous helium, and we really don't know much about liquid helium.

Buy high-purity helium and find Wuhan Yisi Tuopu Technology Co., Ltd. Click on the online inquiry or call our hotline at+86 189 8614 9031

1、 Properties of liquid helium and high-purity helium gas

Liquid helium is the liquid form of helium at extremely low temperatures, typically used for cooling superconductors. The boiling point of liquid helium is -268.9 ℃, which means it requires a very low temperature to remain liquid. Liquid helium has good thermal conductivity and low viscosity, making it very useful in the study of superconductor physics.

High purity helium gas is a type of high-purity gas commonly used in fields such as gas welding, gas cutting, float glass, and semiconductor production. The chemical properties of high-purity helium are very stable and do not easily react with other substances. Its density is very low, 1/7 of the air density, so it can provide excellent gas protection and inert atmosphere.

2、 The use of liquid helium and high-purity helium gas

Liquid helium is mainly used for research on superconductors. Due to its low-temperature performance, liquid helium can conduct current without loss. This allows superconducting magnets to operate at extremely low temperatures and provide higher magnetic field strength.

High purity helium gas is mainly used for gas welding, gas cutting, and shielding gas. Helium is used as an inert gas in gas welding and gas cutting processes to protect the welding area from oxidation. In high-purity semiconductors, high-purity helium gas is also used to manufacture chips.

3、 Production process of liquid helium and high-purity helium gas

Liquid helium is compressed into liquid by cooling helium to an extremely low temperature of -268.9 ℃. This usually requires liquid nitrogen to cool helium and a special pressure vessel to store liquid helium. High purity helium gas is extracted from a helium source. The usual extraction methods include fractionation and cyclic extraction. In fractionation methods, helium is separated through physical processes. In the cyclic extraction method, helium is purified through repeated gas circulation. After refining and filtering, helium can reach high purity standards.

There are significant differences between liquid helium and high-purity helium in terms of properties, applications, and production processes. Liquid helium is mainly used for superconductor research, requiring extremely low temperatures to maintain the liquid, while high-purity helium is mainly used for gas welding, gas cutting, and gas protection. The production methods of high-purity helium include fractionation and cyclic extraction, while the preparation of liquid helium requires special methods such as liquid nitrogen. Through learning, I believe everyone has gained a certain understanding of the difference between liquid helium and gas helium. Wuhan Yisi Tuopu Technology Co., Ltd. website continues to publish gas knowledge. Please pay attention to the updated content. Latest helium price information! The price of imported ultra-high purity helium gas from the United States is the most affordable on the internet! How much is helium per bottle? What is the price of helium gas? All purity packaging is available for sale! Do you know the price of helium? Buy high-purity helium and find Wuhan Yisi Tuopu Technology Co., Ltd. Click on the online inquiry or call our hotline at+86 189 8614 9031