Low-temperature storage tank molecular sieve filling device

By using nitrogen replacement and purge pipe systems during the filling of molecular sieve of low-temperature storage tanks, the problem of degradation of adsorption capacity caused by contact between molecular sieve and expanded perlite is solved, and the vacuum efficiency and insulation performance are improved.

CN223178625UInactive Publication Date: 2025-08-01CHONGQING ENDURANCE ENERGY EQUIP INTEGRATION CO LTD
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Patent Information

Application Number
CN202421829490.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2025-08-01
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Prior Art During the filling process of low-temperature storage tank molecular sieve, the contact between the molecular sieve and expanded perlite causes the adsorption capacity to decrease, affecting the vacuum degree and insulation performance of the storage tank interlayer.

Method used

A low-temperature storage tank molecular sieve filling device is used to remove the vacuum of the storage tank interlayer using inert gas nitrogen, and nitrogen is replaced in the container assembly through a purge tube system to avoid contact with the molecular sieve and air and ensure the stability of the adsorption capacity of the molecular sieve.

Benefits of technology

It improves the vacuum efficiency in the later stage, reduces the investment in manufacturing time, maintains the insulation performance of the low-temperature storage tank, and avoids the rebound of vacuum.

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Abstract

The utility model provides a molecular sieve filling device for a low-temperature storage tank. The molecular sieve filling device comprises a container assembly, an upper cover assembly installed at a feeding port of the container assembly, a discharging pipe system connected with a discharging port of the container assembly and a purging pipe system. Two independent material storage cavities and a discharging cavity located below the material storage cavities are formed in the container assembly, the two material storage cavities are jointly connected with a discharging pipe, the discharging pipe is connected with a feeding switch assembly, and outlets of the two material storage cavities can be closed at the same time or opened in a time-sharing mode by operating the feeding switch assembly; a pull valve which can be connected with a molecular sieve filling opening of the low-temperature storage tank is arranged at the outlet end of the discharging pipe system; inert gas conveyed by the purging pipe system can enter the discharging cavity through the material storage cavity. The storage tank interlayer is subjected to vacuum breaking through nitrogen, the molecular sieves and the expanded perlite are located in the nitrogen environment in the filling process, contact with air is reduced, the adsorption capacity of the molecular sieves is stable, the later vacuumizing efficiency is improved, and the heat preservation performance is effectively guaranteed.
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