Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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超臨界流體發(fā)泡擠出機(jī)溫度控制系統(tǒng)研究

來(lái)源:電工電氣發(fā)布時(shí)間:2016-04-05 16:05 瀏覽次數(shù):763

超臨界流體發(fā)泡擠出機(jī)溫度控制系統(tǒng)研究 

徐天藝 
合肥會(huì)通中科材料有限公司,安徽 合肥 230088 
 

摘 要: 介紹了超臨界流體發(fā)泡擠出機(jī)的溫度控制系統(tǒng),分析了影響擠出設(shè)備溫控系統(tǒng)精度的因素,并提出了改進(jìn)措施,即利用雙通道PID 結(jié)合可控硅調(diào)整加熱冷卻系統(tǒng)的輸出功率,降低了系統(tǒng)的熱慣性與遲滯性。實(shí)驗(yàn)結(jié)果表明,控溫精度可達(dá)到±1 ℃,極大地提高了擠出發(fā)泡制品的質(zhì)量和成品率。 關(guān)鍵詞: 超臨界流體;雙通道控制;可控硅;溫度控制
中圖分類(lèi)號(hào):TM571 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2013)11-0057-04


Study on Temperature Controlled System of Supercritical Fluid Foaming Extruder 

XU Tian-yi 
Hefei Orinko-zhongke Plastic Material Co., Ltd, Hefei 230088, China 
 

Abstract: Introduction was made to a supercritical fluid foaming extruder temperature control system. Analysis was made to factors impacting on the accuracy of equipment temperature control system, the improved measures were raised. Combined with thyristor adjusting output power of heating and cooling system, the double-channel PID was used to reduce thermal inertia and hysteresis. Experimental result shows that the temperature control accuracy can reach ±1℃, which greatly lifted quality and finished product percentage of extrusion foaming products.
          Key words: supercritical fluid; dual channel controller; silicon controlled rectifier; temperature control


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