Ultra-thin float glass production line tin bath protective gas intelligent control system

An intelligent control system and float glass technology, applied in the field of automatic control, can solve problems affecting the yield of ultra-thin glass and large content errors, so as to improve the safety production factor and ensure production safety.

Inactive Publication Date: 2016-09-28
BENGBU TRIUMPH ENG TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the content of nitrogen and hydrogen gas introduced is the amount converted by flow rate and pressure. The actual content of gas fed into the tin bath and the measured content have relatively large errors, which seriously affect the yield of ultra-thin glass.

Method used

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  • Ultra-thin float glass production line tin bath protective gas intelligent control system

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Embodiment Construction

[0018] Referring to the accompanying drawings, the intelligent control system for the tin bath protection gas of the ultra-thin float glass production line includes a hydrogen supply pipeline 2 connected to the tin bath 1, an oxygen supply pipeline 3, a mixed gas circuit 4, a hydrogen supply pipeline 2, A pressure transmitter 5, a temperature sensor 6, a flow transmitter 7, an electric regulating valve 8, and a pneumatic shut-off valve 9 are installed in sequence on the oxygen supply pipeline 3, and a gas purity analyzer 10 is installed in the mixed gas circuit 4. Transmitter 5, temperature sensor 6, flow transmitter 7, electric regulating valve 8, pneumatic shut-off valve 9, and gas purity analyzer 10 are respectively connected to PLC controller 11, and PLC controller 11 is connected to DCS controller 12, and the pressure Transmitters and temperature sensors are externally connected to host computer stations.

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Abstract

The invention discloses an ultra-thin float glass production line tin bath protective gas intelligent control system. intelligent control system comprises a hydrogen supply pipeline, an oxygen supply pipe and a mixing gas loop; a pressure transmitter, a temperature sensor, a flow transmitter, an electric regulating valve, and a pneumatic intercepting valve are respectively arranged on the hydrogen supply pipeline and the oxygen supply pipeline in order, a gas purity analyzer is arranged in the mixing gas loop; the pressure transmitter, the temperature sensor, the flow transmitter, the electric regulating valve, and the pneumatic intercepting valve and the gas purity analyzer are respectively connected with a PLC controller, and a DCS controller is connected with the PLC controller. According to the invention, the gas purity analyzer is used for accurately analyzing the hydrogen content, safety production coefficient is increased, and the gas flow entering into the tin bath can be accurately controlled through control of PID.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to an automatic control system for protecting tin liquid in a tin bath from oxidation in a float glass production line. Background technique [0002] The so-called ultra-thin float glass is glass with a thickness of less than 1.5mm compared to ordinary glass. Because of its high transmittance, smooth surface, high hardness, and good chemical stability, it is widely used in electronics, Different industries such as solar energy, instrumentation and medical glass. Ultra-thin float glass has higher requirements than other float glass, and belongs to one of the most cutting-edge and cutting-edge technical fields in the international glass industry. Therefore, it is very important to strictly control the purity of the gas in the tank and the purity of the tin liquid to effectively prevent the oxidation and vulcanization of the tin liquid. Traditional methods provide inert protective ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B18/20C03B18/22
CPCC03B18/20C03B18/22
Inventor 宋方轲邢宝山郑纤秀王亮许新林
Owner BENGBU TRIUMPH ENG TECH CO LTD
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