热管抑制煤自燃的降温效应分析
发布时间：2018-11-25 16:57
【摘要】：为了有效扩散煤堆内部积聚的热量从而抑制煤火自燃灾害的出现,基于高效相变的热管深部移热技术实现自动快速转移煤自燃热量,采用实验的方法对比分析了所设计的热管插入煤堆前后煤层内部的降温效应,得到了煤层温度随热管插入间距、深度及角度分布和煤层蓄热量的变化规律,探讨了热管扩散煤堆自燃热量的降温冷却效应传递机理。结果表明所设计的热管可以自动连续实现有效扩散煤堆氧化所蓄存热量,有望利用热管的自动调温特性实现各煤层温度平衡,对于预防煤田自然发火具有一定的参考价值。
[Abstract]:In order to effectively diffuse the heat accumulated inside the coal pile and restrain the occurrence of the spontaneous combustion disaster, the heat transfer technology based on the high efficiency phase transformation in the deep heat pipe can automatically transfer the heat of the coal spontaneous combustion. By using the experimental method, the cooling effect of the designed heat pipe in coal seam before and after the insertion of the heat pipe is compared and analyzed, and the variation of the coal bed temperature with the insertion distance, depth and angle of the heat pipe and the heat storage in the coal bed is obtained. The mechanism of cooling effect transfer in spontaneous combustion of heat pipe diffused coal reactor is discussed. The results show that the designed heat pipe can automatically and continuously realize the effective diffusion of the stored heat stored in the oxidation of the coal pile, and it is expected to realize the temperature balance of each coal bed by using the automatic temperature regulation characteristic of the heat pipe, which has certain reference value for preventing spontaneous combustion in the coal field.
【作者单位】： 西安科技大学能源学院;
【基金】：国家自然科学基金资助项目(51404191,51504188) 陕西省自然科学基金资助项目(2014JQ7277,2013JM7018)
【分类号】：TD752.2
[Abstract]:In order to effectively diffuse the heat accumulated inside the coal pile and restrain the occurrence of the spontaneous combustion disaster, the heat transfer technology based on the high efficiency phase transformation in the deep heat pipe can automatically transfer the heat of the coal spontaneous combustion. By using the experimental method, the cooling effect of the designed heat pipe in coal seam before and after the insertion of the heat pipe is compared and analyzed, and the variation of the coal bed temperature with the insertion distance, depth and angle of the heat pipe and the heat storage in the coal bed is obtained. The mechanism of cooling effect transfer in spontaneous combustion of heat pipe diffused coal reactor is discussed. The results show that the designed heat pipe can automatically and continuously realize the effective diffusion of the stored heat stored in the oxidation of the coal pile, and it is expected to realize the temperature balance of each coal bed by using the automatic temperature regulation characteristic of the heat pipe, which has certain reference value for preventing spontaneous combustion in the coal field.
【作者单位】： 西安科技大学能源学院;
【基金】：国家自然科学基金资助项目(51404191,51504188) 陕西省自然科学基金资助项目(2014JQ7277,2013JM7018)
【分类号】：TD752.2
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