Fault handling process for temperature-controlling thermal couple of polysilicon ingot furnace

A troubleshooting method and polysilicon ingot furnace technology, applied in polycrystalline material growth, chemical instruments and methods, single crystal growth, etc., can solve problems such as temperature drop, affect silicon ingot production, and difficulty in rapid replacement, and achieve easy implementation , Troubleshooting method and reliable effect
CN101311342AInactive Publication Date: 2008-11-2648TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
Publication Date
2008-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a treatment method of temperature control thermocouple fault of a polysilicon ingot furnace. When the temperature control thermocouple has fault, the closed-loop temperature control of the temperature control thermocouple is converted into open-loop power control to control the heating power. The invention has a realization method that when the temperature control thermocouple is normally working, the temperature characteristic data of the heater are stored for every interval time; when the temperature control thermocouple has fault, the stored temperature characteristic data of the previous furnace is taken out to trace the trail of the setting value of the heating power and to directly control the heating power of the heater to realize the open-loop temperature control. The treatment method of temperature control thermocouple fault of the polysilicon ingot furnace is reliable and is easy to be realized, which can enhance the reliability of the equipment to the maximum limit and can satisfy the requirement of safety production of the polycrystalline silicon ingot furnace.
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Description

technical field

[0001] The invention relates to an emergency response measure for a temperature-controlling thermocouple failure of an industrial furnace, and further refers to a method for treating the failure of a polycrystalline silicon ingot furnace temperature-controlling thermocouple failure. Background technique

[0002] At present, the production process for preparing silicon ingots for solar cells mainly includes single crystal silicon pulling and polycrystalline silicon pulling. Polysilicon ingot casting technology has become the mainstream method for preparing silicon ingots for solar cells because it can directly melt and cast square silicon ingots suitable for large-scale production, and the manufacturing process is relatively simple.

[0003] To prepare large-sized square ingots for solar polycrystalline silicon cells, 240-270kg of silicon material is loaded at a time, and the products are very expensive, worth more than RMB 500,000. Its production process inc...

Claims

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