Portable liquid nitrogen supply device for single crystal diffractometer

Abstract

A portable liquid nitrogen supply device for a single crystal diffractometer is characterized in that a liquid nitrogen tank is arranged on a base, the base and the liquid nitrogen tank are integrated, an opening of the liquid nitrogen tank is provided with a releasable cover, a first seal ring is arranged between the releasable cover and the opening of the liquid nitrogen tank, the releasable cover is provided with a liquid incoming pipe, an exhaust pipe, and a delivery pipe; the end of each of the liquid incoming pipe and the exhaust pipe positioned in air is provided with a plug; the lengthof the exhaust pipe positioned in the liquid nitrogen tank is less than that of the liquid incoming pipe; a weighing mechanism is arranged in the base. The portable liquid nitrogen supply device hasthe advantages of simple structure, low cost, good operational convenience and high working efficiency.

Description

technical field [0001] The invention belongs to the technical field of storage containers, and in particular relates to a portable liquid nitrogen supply device for a single crystal diffractometer. Background technique [0002] X-ray diffraction technology is one of the most important ways and authoritative analysis methods for people to understand the microstructure of matter. Without destroying the sample, the single crystal X-ray diffractometer can determine the crystal structure of a single crystal, and can understand the three-dimensional spatial arrangement of atoms in the crystal at the atomic resolution level, and obtain relevant key lengths, bond angles, torsion angles, and molecular structures. Type and conformation, inter-molecular interaction and stacking, molecular structure, absolute configuration and precise electron density, etc., and a large amount of microscopic information, and study its laws, so as to further clarify the nature of matter, and provide supp...

AI Technical Summary

Problems solved by technology

The cryogenic system (1) is poorly sealed, and the liquid nitrogen cover is opened, adding liquid nitrogen will easily cause the moisture in the air at the liquid nitrogen port to condense and be brought into the liquid nitrogen tank to form ice crystals, which will easily block the pipeline when the ice crystals are sucked into the liquid nitrogen transmission pipeline; (2) It is impossible to add liquid nitrogen in real time during the test; (3) It is impossible to display the remaining amount of liquid nitrogen in real time

Therefore, although there are many advantages in testing single crystals with low-temperature liquid nitrogen, there are many problems caused by pipeline blockage, which makes it inconvenient to use low-temperature systems.

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