Full-automatic smelting control system and control method for polycrystalline silicon

A control system, polysilicon technology, applied in general control systems, control/regulation systems, program control in sequence/logic controllers, etc., can solve the problems of inability to fully guarantee product quality, high labor intensity, and low control accuracy. , to achieve the effect of low scrap rate, reduced labor intensity, and reduced safety hazards

Inactive Publication Date: 2015-04-29
朱兴发
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the long smelting cycle of polysilicon materials, the intermediate frequency power supply is completely operated manually, and the labor intensity is too high; when it is completely operated manually, the control accuracy is not high, and the product quality cannot be fully guaranteed.

Method used

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  • Full-automatic smelting control system and control method for polycrystalline silicon

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Embodiment Construction

[0013] control figure 1 , polysilicon automatic smelting control system, its structure includes programmable logic controller PLC, intermediate frequency power distribution board, polysilicon melting crucible temperature device, digital display current power and temperature device, sensor, 4-20MA current signal generator; The first signal output end of the programmable controller PLC is connected to the signal input end of the polysilicon melting crucible temperature device through the intermediate frequency power distribution board, and the second signal output end of the programmable logic controller PLC is connected to the signal of the digital display current power and temperature device The input terminal, the signal output terminal of the intermediate frequency power supply and the temperature device of the polysilicon melting crucible are connected to the 4-20MA current signal generator through the sensor, and the signal output terminal of the 4-20MA current signal gener...

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Abstract

The invention discloses a full-automatic smelting control system and a control method for polycrystalline silicon. The system structurally comprises a programmable logic controller (PLC), a medium-frequency power distribution board, a polycrystalline silicon smelting crucible temperature device, a current power and temperature digital display device, a sensor and a 4-20MA current signal generator. The system and the method have the advantages that firstly, a mode of whole-process temperature measurement and heating on a wall of a crucible by a thermocouple of a medium-frequency induction furnace is adopted, process-related power and frequency of a medium-frequency power supply and real-time smelting temperature of polycrystalline silicon can be all converted into digital signals through the sensor, the digital signals are transmitted to a PLC system, the PLC system can perform PID (proportion integration differentiation) regulation on the parameters according to process requirements of polycrystalline silicon, and an output result can accurately control various performance indexes of polycrystalline silicon, so that the rejection rate of products is greatly reduced; secondly, the labor intensity is reduced; thirdly, the production efficiency is improved; fourthly, potential safety hazards are reduced.

Description

technical field [0001] The invention relates to a polycrystalline silicon full-automatic smelting control system and a control method, belonging to the technical field of high-tech material smelting. Background technique [0002] Most of the existing polysilicon smelting controls are open-loop control methods, that is, completely rely on manual operation. Due to the long smelting cycle of polysilicon materials, the intermediate frequency power supply is completely operated manually, and the labor intensity is too high; when it is completely operated manually, the control accuracy is not high, and the product quality cannot be fully guaranteed. Contents of the invention [0003] The present invention proposes a polysilicon fully automatic smelting control system and control method, the purpose of which is to overcome the above-mentioned defects existing in the prior art, and realize full-automatic smelting control of power and temperature closed-loop formula mode. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05G05D23/22
CPCG05B19/05G05B2219/163
Inventor 朱兴发李亚逸韩至成高玉龙朱伟陈睿
Owner 朱兴发
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