惠州蓄能电站、江边水电站及瀑布沟水电站主厂房机电设备散热量测试计算

发布时间：2018-01-29 02:37

本文关键词： 水电站主厂房机电设备散热量对流换热表面传热系数辐射换热当量表面传热系数散热量指标　出处：《西安建筑科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：水电站（蓄能电站）厂房的热（冷）负荷主要包括电站建筑围护结构的得（失）热量和电站内各种机电设备的散热量。在某种程度上，机电设备的散热量是影响厂房室内温度的主要内在因素。因此，正确的计算电站机电设备散热量，对指导电站的通风空调设计有着重要的意义。目前，《水电站机电设计手册——采暖通风与空调》中对电站机电设备散热量的计算公式的参考依据是十几年前电站内机电设备相关数据，与现在实际工程中电站内的机电设备类型已不完全相符。为了获得正确的电站机电设备散热量，本文作者作为李安桂教授水电工程热湿环境研究团队骨干之一，于2013年7月、8月（夏季工况）及2014年1月（冬季工况），对惠州蓄能电站、九龙江边水电站及大渡河瀑布沟水电站进行了测试。主要测试了电站机电设备壁面温度、厂房壁面温度、厂房室内空气温度、机电设备尺寸、厂房尺寸等相关数据。本文中，作者针对电站主厂房内的机电设备，推导得出机电设备与空气间的对流换热表面传热系数及辐射换热当量表面传热系数的计算公式，同时分析设备壁面温度、厂房内空气温度对设备表面传热系数的影响。其次，以发电机层为例，，计算分析了惠州蓄能电站、九龙江边水电站及大渡河瀑布沟水电站主机间内机电设备的散热量。本文提出了电站机电设备面积散热量指标、体积散热量指标、总装机容量散热量指标，并对惠州蓄能电站、九龙江边水电站、大渡河瀑布沟水电站的主厂房发电机层、中间层、水轮机层、蜗壳层机电设备的面积散热量指标、体积散热量指标、总装机容量散热量指标进行计算。由于时间原因，研究小组只对惠州蓄能电站、九龙江边水电站、大渡河瀑布沟水电站这3个电站进行了测试，要进一步获得正确、合理的电站机电设备散热量，还需要进行较多数量的水电站现场测试，根据工程实践，总结工程经验，获得水电站机电设备散热量的合理、科学的计算方法。
[Abstract]:The heat (cooling) load of hydropower station (storage power station) plant mainly includes the heat gain (loss) of the enclosure structure of the power station and the heat loss of various mechanical and electrical equipment in the power station. To some extent. The heat emission of electromechanical equipment is the main internal factor that affects the indoor temperature of the workshop. Therefore, it is of great significance to correctly calculate the heat loss of the electromechanical equipment of the power station to guide the design of the ventilation and air conditioning of the power station. At present, the reference basis for the calculation formula of heat loss of electromechanical equipment in the Manual of Electromechanical Design of Hydropower Station-heating, ventilation and Air-conditioning is the relative data of electromechanical equipment in power station more than ten years ago. In order to obtain the correct heat emission of the electromechanical equipment in power station, the author is one of the backbone of the research team of thermal and wet environment of Professor Li Angui hydropower project. On July 2013, August (summer condition) and January 2014 (winter condition), Huizhou storage power station. The wall temperature of the electromechanical equipment, the wall temperature of the factory building, the indoor air temperature of the factory building, and the size of the electromechanical equipment are mainly tested in the Jiulong River side Hydropower Station and the Dadu River Pubugou Hydropower Station. Workshop size and other relevant data. In this paper, the author deduces the calculation formulas of heat transfer coefficient of convection heat transfer surface and equivalent surface heat transfer coefficient of radiation heat transfer between mechanical and electrical equipment and air in view of the electromechanical equipment in the main building of power station. At the same time, the influence of the wall temperature and the air temperature on the heat transfer coefficient of the equipment surface is analyzed. Secondly, taking the generator layer as an example, the Huizhou storage power station is calculated and analyzed. Heat dissipation of mechanical and electrical equipment in mainframe of Jiulong River side Hydropower Station and Dadu River Pubugou Hydropower Station. In this paper, the area heat dissipation index, volume heat dissipation index and total installed capacity heat dissipation index of the electromechanical equipment of the power station are put forward, and the Huizhou storage power station, the Jiulong River side Hydropower Station, is also given. The area heat dissipation index, volume heat dissipation index and total installed capacity heat dissipation index of the generator layer, middle layer, hydraulic turbine layer and volute layer of the main powerhouse of Pubugou Hydropower Station of Dadu River are calculated. Due to time reasons, the research team only tested Huizhou storage power station, Jiulong River side hydropower station and Dadu River Pubugou hydropower station, which should be further correct. It is necessary to carry out a large number of field tests of hydropower stations in order to obtain a reasonable and scientific calculation method for heat loss of electromechanical equipment of hydropower stations. According to the engineering practice and summing up the engineering experience, a reasonable and scientific calculation method of heat loss of electromechanical equipment of hydropower stations is obtained.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV734

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