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首页> 外文会议>2nd International Conference on Silting Problems in Hydropower Plants Sep 26-28, 2001 Bangkok, Thailand >TURBINE RUNNERS FOR SIL TY WATER: DESIGN/SELECTION GUIDELINES
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TURBINE RUNNERS FOR SIL TY WATER: DESIGN/SELECTION GUIDELINES

机译：水质涡轮机流道：设计/选择指南

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摘要

The silting process, in the areas where hydropower plants are operating has an impact on operation of these projects. Silt suspended in water causes damage to the underwater turbine parts. This results in heavy cost of repairs, downtime of plant. However, if adequate care is taken while designing the power plant, viz., selecting equipment, using proper materials and to erection of power plant then the damages due to silt erosion can be reduced. This will result in smooth operation of plant and improve economy of plant. This aspect acquires significance in Indian context since the development of hydropower sector is in progress in Himalayan region, having high head and high silt content in the water. Many projects such as Nathpa Jhakari, Tala, Chemera-II, Dauliganga and Teesta are now under development. Out of 84000 MW potential available in country only 23% is developed so far and the percentage of hydropower in total installed capacity is just 24%. The thermal hydro mix of 60:40 is preferred to have greater grid stability and ease in meeting peak demands. This condition warrants to take fresh look at accelerated development of hydro. Lot of potential of hydro has remained untapped in Himalayan rivers where silt content in water is very high and the silt mostly contains quartz, which is highly abrasive and thus affects the smooth running of plant. This requires frequent shut downs for repairs/replacement of parts thus affecting not only power generation but also loss in revenue. The paper discusses aspects of the damages due to silt and precautions to be taken while designing/selecting the turbines and it" underwater parts to reduce the damages arising due to use of silty water for efficient power generation.
机译：在水力发电厂正在运行的地区，淤积过程对这些项目的运行产生影响。悬浮在水中的泥沙会损坏水下涡轮机部件。这导致维修成本高昂，设备停机。但是，如果在设计发电厂时采取足够的注意，即选择设备，使用适当的材料并安装发电厂，则可以减少由于淤泥侵蚀而造成的损害。这将导致工厂的平稳运行并提高工厂的经济性。由于在喜马拉雅地区水电部门的发展正在进行，水头高且泥沙含量高，因此这方面在印度方面具有重要意义。 Nathpa Jhakari，Tala，Chemera-II，Dauliganga和Teesta等许多项目正在开发中。迄今为止，在该国可用的84000兆瓦潜力中，仅开发了23％，水电在总装机容量中的比例仅为24％。最好使用60:40的热水混合，以具有更高的电网稳定性并易于满足峰值需求。这种情况值得重新审视水电的加速发展。在喜马拉雅河中，水的泥沙含量很高，而泥沙中大部分含有石英，这具有很高的磨蚀性，因此会影响植物的平稳运转。这需要经常关闭以进行零件的修理/更换，因此不仅影响发电，而且影响收入损失。本文讨论了由于淤泥造成的损害的各个方面，以及在设计/选择涡轮机及其“水下零件”时应采取的预防措施，以减少因使用粉砂水进行有效发电而造成的损害。

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