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论文类型：期刊论文

发表时间：2012-01-01

发表刊物：JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES

收录刊物：SCIE、EI、Scopus

卷号：25

期号：1

页面范围：127-130

ISSN号：0950-4230

关键字：Methane; Coal dust; Hybrid explosion; Obstacles

摘要：An experimental system including pressure transducer, data acquisition card, computer and electric spark ignition device was set up to research methane coal dust hybrid explosions in closed tubes with different types of obstacles inside. Its dynamic response time was less than a millisecond and the test precision was 0.1%. The experimental results show that the obstacles had great effects on the explosion characteristics in the tube. Hollow obstacles linked with inner wall of the tube induced faster pressure rising than installed center blocked solid obstacles. Obstacles with more sharp corner induce more violent explosions. The most dangerous explosion occurred when spacing between obstacles almost equaled the inner diameter of the tube for the same size obstacle. (C) 2011 Elsevier Ltd. All rights reserved.