A screw process gas compressor and an exhaust process within the same

By using nitrogen to replace exhaust gas through internal exhaust process, the problem of mixing exhaust gas and process gas inside the compressor is solved, the purity of process gas is improved and safety risks are reduced, ensuring the safety and ease of operation of the equipment.

CN117781182BActive Publication Date: 2026-07-24SIMEON TECH CO LTD
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Patent Information

Application Number
CN202311841442.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-28
Publication Date
2026-07-24
Estimated Expiration
2043-12-28

AI Technical Summary

Technical Problem

When existing air compressors compress process gases, residual exhaust gas inside the compressor mixes with the process gas, resulting in a decrease in the purity of the process gas and posing a safety hazard.

Method used

An internal exhaust process is adopted, in which nitrogen is introduced into the compressor to replace the waste gas, and nitrogen is introduced again to discharge the process gas after the process gas is compressed. The inertness and stability of nitrogen are used to improve the purity of the process gas and ensure safety.

Benefits of technology

It improves the purity of process gases, reduces safety risks, and facilitates equipment disassembly, inspection, and maintenance.

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Abstract

The application provides a screw type process gas compressor and an internal exhaust process thereof, and the internal exhaust process mainly comprises the following steps: power-on before starting, opening a waste gas outlet, opening a nitrogen inlet, exhausting waste gas by nitrogen, closing the nitrogen inlet, opening a process gas inlet, detecting the gas concentration of the waste gas outlet, closing the waste gas outlet, opening an outlet, and closing before stopping, wherein the process gas is replaced by nitrogen before stopping, nitrogen is conveyed into the compressor before compressing the process gas, so that the waste gas in the compressor is exhausted, the purity of the process gas is increased by using the inertness and stability of nitrogen, the process gas in the compressor is exhausted by conveying nitrogen into the compressor after compressing the process gas, the safety of the operator during disassembly, maintenance and maintenance is facilitated, and the process gas explosion during disassembly is prevented.
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