Gas flow control system and method for preparing continuous SiC fibers

Through the combination of the Internet of Things cloud platform and the PLC programming controller, automatic zeroing and real-time monitoring of gas flow during the SiC fiber preparation process are achieved, solving the problems of zero point drift and flow deviation of the mass flow meter, and improving the automation and accuracy of the preparation process.

CN120669768APending Publication Date: 2025-09-19INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202510616281.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2025-09-19

AI Technical Summary

Technical Problem

In the existing SiC fiber preparation process, the zero drift and flow deviation of the mass flowmeter lead to high labor costs and affect fiber performance, and there is a lack of real-time monitoring and alarm mechanisms.

Method used

A gas flow control system is designed, which uses the Internet of Things cloud platform, PLC programming controller and solenoid valve to achieve automatic zeroing and real-time monitoring of multiple mass flow meters. The solenoid valve is controlled by the Internet of Things cloud platform and PLC programming controller to achieve precise adjustment and real-time monitoring of gas flow.

Benefits of technology

It reduces labor costs, improves the error correction capability of the equipment, ensures accurate control of gas flow, reduces equipment costs and workspace requirements, and provides real-time monitoring and alarm functions.

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Abstract

The invention discloses a gas flow control system for preparing continuous SiC fibers. The gas flow control system comprises a client, an Internet of Things cloud platform, a data acquisition gateway and a plurality of mass flow meter cabinets, the mass flow meter cabinet is provided with a gas inlet and a plurality of gas outlets, the gas inlet is connected with a gas cylinder, and the gas outlets are connected with SiC equipment; a PLC (programmable logic controller), a 24V power supply and a plurality of gas supply pipelines are arranged in the mass flow meter cabinet, each gas supply pipeline is provided with a mass flow meter and an electromagnetic valve, a gas inlet of the mass flow meter cabinet is connected with inlet ends of the plurality of gas supply pipelines, and an outlet end of each gas supply pipeline is connected with a corresponding gas outlet of the mass flow meter cabinet; the PLC is respectively connected with the plurality of mass flowmeters and the electromagnetic valve; the client is connected with the Internet of Things cloud platform, and the Internet of Things cloud platform is connected with the plurality of PLCs through the data acquisition gateway. The system has the characteristics of saving the labor cost, saving the occupied space, improving the working efficiency, improving the gas flow control precision and the like.
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