矿用救生舱空气环境控制数值模拟

发布时间：2018-05-05 20:26

  本文选题：矿用救生舱 + 空气调节　； 参考：《兰州理工大学》2013年硕士论文

【摘要】：我国的矿难事故频发,不可避免的对中国的国际形象造成负面影响。2009年之前,我国的矿井救援主要是依靠自救器与救护队,救援能力非常有限,因此矿难事故遇难的人员数量很多,给矿井安全生产蒙上了严重阴影。在此背景下,矿用安全救生舱应运而生。国家规定,在十二五期间内,全国所有矿井下必须具备紧急避险系统。 矿用救生舱是紧急避险系统不可或缺的避难设备。其中生命保障系统是设计矿用救生舱的核心系统,对保障避难人员的生命安全具有重要意义。在生命保障系统里,舱内空气环境调节系统的研究可以指导和优化生保系统中其他子系统,因此有必要对舱内空气环境调节系统进行系统深入的研究。 舱内空间空气的温度、速度、相对湿度、氧气及有毒有害气体的分布极大的影响了舱内的空气环境,是影响避难人员在舱内的舒适性的直接因素。本文利用计算流体力学软件AIRPAK对救生舱内的空气环境调节进行数值模拟并做深入研究。对舱内的温度场、速度场、相对湿度场分布进行研究时,首先,对送风口形式进行比较研究总结其对于各场影响的特点,并找到适合救生舱内空气调节的送风口形式；其次,对送风参数进行深入研究,总结各个参数下舱内各场的分布特点,并选择合理的送风参数；第三,系统研究五种气流组织形式下,各场在舱内的分布特点,为制冷系统设计等其他设计提供参考依据。在氧气及有害气体方面,介绍了氧气供应和二氧化碳净化的主要方法,在此基础上,模拟了五种气流组织形式下氧气浓度与二氧化碳气体浓度在舱内的分布,并总结了它们的分布特点。 数值模拟发现,采用百叶式送风口形式,送风温度26℃,送风速度3.3m/s时很好的调节了舱内的空气环境。满足了救生舱的设计要求和避难人员的舒适性要求。五种气流组织形式下的各场分布特点给救生舱的生命保障系统提供了设计依据。
[Abstract]:The frequent occurrence of mine accidents in China inevitably has a negative impact on China's international image. Before 2009, China's mine rescue mainly relied on self-rescue equipment and rescue teams, and its rescue capacity was very limited. As a result, many people died in mine accidents, which has cast a serious shadow on mine safety. In this context, mine safety rescue cabin came into being. State regulations, in the 12-year period, all mines in the country must have an emergency risk-aversion system. Mine rescue cabin is an indispensable refuge equipment for emergency shelter system. Life support system is the core system to design mine lifebuoy, which is of great significance to the safety of asylum. In the life support system, the study of the indoor air conditioning system can guide and optimize the other subsystems of the health care system, so it is necessary to conduct a systematic and in-depth study on the cabin air conditioning system. The distribution of air temperature, velocity, relative humidity, oxygen and poisonous and harmful gases in the cabin greatly affects the air environment in the cabin, and is a direct factor affecting the comfort of the asylum occupants in the cabin. In this paper, the computational fluid dynamics software AIRPAK is used to simulate the air conditioning in the lifebuoy. When studying the distribution of temperature field, velocity field and relative humidity field in the cabin, first of all, the characteristics of the influence of the air outlet on each field are compared and summarized, and the air supply outlet suitable for air conditioning in the lifebuoy is found; secondly, The distribution characteristics of each field in the cabin under each parameter are summarized, and reasonable air supply parameters are selected. Thirdly, the distribution characteristics of each field in the cabin under five air distribution forms are systematically studied. It provides reference for other designs such as refrigeration system design. In the aspect of oxygen and harmful gas, the main methods of oxygen supply and carbon dioxide purification are introduced. On the basis of this, the distribution of oxygen concentration and carbon dioxide gas concentration in the cabin under five kinds of airflow organization forms are simulated. Their distribution characteristics are summarized. The numerical simulation shows that the air environment in the cabin is well adjusted when the air supply temperature is 26 鈩，

本文编号：1849177