论文部分内容阅读
水轮机导水叶漏水,几乎是小型水电站运行中普遍存在的严重问题。不仅浪费了水量,(据有关资料介绍,一般减少电站正常发出电能的0.5%～3%);而且由于漏水,在停机过程中延长了机组低转速时间,加速了推力瓦的老化和磨损;甚至对开机也带来不良影响。处理水轮机导水叶漏水问题,一般采用圆橡皮条密封;或者用定型橡胶压板密封。上述方法对容量1000千瓦以上的小型水轮机一次处理都需千元以上,而且处理工艺也复杂。我们采用锡焊法,只花了几十元钱,工艺简单,承受了八年运行约2万小时的考验,减少了电站发电损失约12000元。以下就导水叶漏水原因和锡焊法处理工艺进行介绍。
Leakage of turbine guide vanes is a serious problem that is common in the operation of small hydropower plants. Not only wasting water (according to relevant information, it generally reduces 0.5% -3% of the normal power output from the power station); moreover, due to water leakage, the unit low speed time is prolonged during the shutdown process, accelerating the aging and wear of the thrust pad, and even On the boot also have a negative impact. Water turbine guide vane to deal with water leakage problems, the general use of round rubber seal; or stereotypes rubber plate seal. The above method requires a thousand yuan or more for a small turbine with a capacity of more than 1000 kilowatts, and the treatment process is also complicated. We use soldering method, only spent tens of dollars, the process is simple, to withstand eight years running about 20,000 hours test, reducing the power plant loss of about 12,000 yuan. The following water conduction leaves leaking reasons and soldering process introduced.