矿井掘进面空气环境的局部降温系统与装置的研究
发布时间：2018-11-18 18:39
【摘要】：煤炭在我国能源消费结构中占有十分重要的位置，是一次能源消耗结构中的主体。然而随着煤矿开采规模和煤炭开采量逐年加大，伴随而来的安全问题也越来越多，其中高温高湿矿井热害尤为严重。 传统矿井降温技术中虽然有专家把空气压缩式制冷系统应用在矿井降温中，，但是由于空气压缩制冷系统应用在矿井降温系统中还面临工作不可靠和用电安全的难题，因而没有成功用于井下。并且由于传统的矿井降温技术都存在各自的缺点，不适用于高温矿井，为了改善矿井高温高湿的环境对矿工身体造成的危害，需要进一步研究新方法，新技术。并获得了一项中国专利，一种用于煤矿井下局部降温的装置，该专利目前已经申请成功。 本文详细介绍了空气流膨胀减焓自力式煤矿井下降温系统的工作原理，及该系统与传统降温技术相比的主要优点。以矿井掘进工作面为研究对象，在斯托克斯方程组及kε湍流模型的基础上，利用Fluent软件对矿井掘进工作面的温度场和速度场进行计算和模拟，研究送风温度和送风速度改变后，矿井掘进面的温度场和速度场的变化趋势。再结合空气流膨胀减焓自力式煤矿井下降温系统的工作原理，分析得出合适的送风温度和送风速度。 以某一工程设计为例，结合计算模拟得出的最佳的送风温度和送风速度，计算出系统运行时涡轮冷却器的制冷量、温降、空气流量、进出口压力等相关的主要设备参数。有了这些参数，为以后的设备制造和进一步的研究打好基础。
[Abstract]:Coal occupies a very important position in China's energy consumption structure and is the main body of primary energy consumption structure. However, with the coal mining scale and the coal mining volume increasing year by year, there are more and more safety problems, especially the heat damage of high temperature and high humidity mine. Although some experts apply air compression refrigeration system to mine cooling in traditional mine cooling technology, however, because air compression refrigeration system is used in mine cooling system, it still faces the problems of unreliable work and safe use of electricity. As a result, it was not successfully used underground. Because the traditional mine cooling technology has its own shortcomings, it is not suitable for high temperature mine. In order to improve the harm to miners caused by high temperature and high humidity environment, it is necessary to further study new methods and techniques. And has obtained a Chinese patent, a device for coal mine local cooling, which has been successfully applied for. This paper introduces in detail the working principle of the air flow expansion reducing enthalpy reducing self-propelled coal mine downhole cooling system and its main advantages compared with the traditional cooling technology. Based on Stokes equations and k 蔚 turbulence model, the temperature field and velocity field of mining face are calculated and simulated by Fluent software. The change trend of temperature field and velocity field of the driving surface of mine. Combined with the working principle of the air flow expansion and enthalpy reduction system, the suitable air supply temperature and velocity are obtained. Taking an engineering design as an example, the main equipment parameters such as cooling capacity, temperature drop, air flow rate and inlet and outlet pressure of turbine cooler are calculated by combining with the best air supply temperature and velocity obtained by simulation. With these parameters, for the future equipment manufacturing and further research to lay a good foundation.
【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD727.2
本文编号：2340829
[Abstract]:Coal occupies a very important position in China's energy consumption structure and is the main body of primary energy consumption structure. However, with the coal mining scale and the coal mining volume increasing year by year, there are more and more safety problems, especially the heat damage of high temperature and high humidity mine. Although some experts apply air compression refrigeration system to mine cooling in traditional mine cooling technology, however, because air compression refrigeration system is used in mine cooling system, it still faces the problems of unreliable work and safe use of electricity. As a result, it was not successfully used underground. Because the traditional mine cooling technology has its own shortcomings, it is not suitable for high temperature mine. In order to improve the harm to miners caused by high temperature and high humidity environment, it is necessary to further study new methods and techniques. And has obtained a Chinese patent, a device for coal mine local cooling, which has been successfully applied for. This paper introduces in detail the working principle of the air flow expansion reducing enthalpy reducing self-propelled coal mine downhole cooling system and its main advantages compared with the traditional cooling technology. Based on Stokes equations and k 蔚 turbulence model, the temperature field and velocity field of mining face are calculated and simulated by Fluent software. The change trend of temperature field and velocity field of the driving surface of mine. Combined with the working principle of the air flow expansion and enthalpy reduction system, the suitable air supply temperature and velocity are obtained. Taking an engineering design as an example, the main equipment parameters such as cooling capacity, temperature drop, air flow rate and inlet and outlet pressure of turbine cooler are calculated by combining with the best air supply temperature and velocity obtained by simulation. With these parameters, for the future equipment manufacturing and further research to lay a good foundation.
【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD727.2
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