高压富氧环境自燃点测试仪的研制  

Development of Autoignition Temperature Tester for High-pressure and Oxygen-enriched Atmosphere

作　　者：安晨[1] 杨遂军[1] 张林 叶树亮[1] 

机构地区：[1]中国计量学院工业与商贸计量技术研究所,浙江杭州310018 [2]杭州仰仪科技有限公司,浙江杭州310018

出　　处：《仪表技术与传感器》2015年第7期38-40,共3页Instrument Technique and Sensor

基　　金：国家质检总局公益性行业科研专项项目(201310102-1)

摘　　要：物质自燃点是化工过程设计及危险性评估和控制的重要依据。针对市场上缺乏高压富氧环境物质自燃点仪器及人工测量危险性大等问题,研制了一种高压富氧环境物质自燃点测试仪。测试仪采用道尔顿分压定律实现高压富氧环境下的气体浓度精确配比,并运用高精度均温场发生技术和多传感器联合燃爆状态辨识技术,实现了高压富氧自燃点的检测。阐述了系统的硬件结构和软件设计,并就多种典型试样进行测定,结果表明仪器自燃点检测结果标准差优于1℃,同时具有良好的重复性。Autoignition temperature is an important basis for chemical process design and risk assessment and control. Nowadays,market lacks of autoignition temperature tester for high-pressure and oxygen-enriched atmosphere,and there is a big risk in artificial measurement. To solve this problem,we developed an autoignition temperature tester for high-pressure and oxygen-enriched atmosphere. The tester used the Daltons law of partial pressures to achieve precise ratio of gas concentration in high-pressure and oxygen-enriched atmosphere,using high-precision uniform temperature generating technology and joint deflagration identification technology of multi-sensor to achieve autoignition temperature detecting. And on this basis,we gave the system＇s hardware configuration and software design. A variety of typical samples measurement test results show that standard deviation of autoignition temperature test is better than 1 ℃ and the instrument has good repeatability.

关 键 词：高压富氧 自燃点 精确配比 燃爆状态辨识 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]