Sealing gas source device of liquid argon pump

By injecting argon product gas in a liquid argon pump using a medium-pressure argon delivery pipeline system to replace the air meter gas source, the problem of air entering the liquid argon pump is solved, and the purity and quality of liquid argon products are achieved is achieved, and the installation and maintenance of sealed gas sources are simplified.

CN119686958APending Publication Date: 2025-03-25JIANGSU SHAGANG STEEL CO LTD +1
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Patent Information

Application Number
CN202411855882.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

In the prior art, air will penetrate into the crude liquid argon along the surface of the rotating shaft, contaminating the liquid argon and affecting the quality of the liquid argon product.

Method used

A liquid argon pump sealed gas source device is adopted, and the medium-pressure argon delivery pipeline system near the air separation equipment is used to inject argon product gas into the crude liquid argon pump along the gap between the rotating shaft and the sealing ring, replacing the original air meter gas source, and the reduced-pressure product argon is used as the sealed gas source.

Benefits of technology

It effectively avoids blow-off, improves the purity and quality of liquid argon products, improves the competitiveness of the products, and simplifies the installation and maintenance of sealed gas sources.

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Abstract

The invention relates to the field of liquid argon pump sealing, in particular to a liquid argon pump sealing gas source device which comprises an argon product pipeline, a gas outlet hole is formed in the argon product pipeline, a plug connected through a fastening unit is arranged at the position of the gas outlet hole, the plug is connected with a gas conveying pipe, a stop valve is installed on the gas conveying pipe, and the gas outlet end of the gas conveying pipe is branched into two branch pipes. A pressure reducing valve is mounted on each branch pipe, and the gas outlet end of each pressure reducing valve is led to the crude liquid argon pump through pipeline welding; in the invention, the pressure of the product argon is reduced from 1.8-2.5 MPa to less than 0.5 MPa, the product argon is used as a sealing gas source for continuous and stable output of the crude liquid argon pump M, the sealing gas of the crude liquid argon pump M is prevented from leaking inwards to pollute the product, meanwhile, after the pressure-reduced product argon is used as the sealing gas source, when the crude liquid argon pump M is put into operation at the initial stage or breaks down, the purity of the pure argon product can be prevented from being damaged, and the production efficiency is improved. And moreover, the argon adjusting time of the argon tower at the initial stage is shortened, the quality of a pure argon product is stably improved, the product quality is ensured, and the product competitiveness is improved.
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