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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 >SUCCESSFUL DESIGN AND DEVELOPMENT OF 'ADDITIONAL REPAIR SEAL' AT SITE FOR FRANCIS TURBINES OF 6 X 115 MW SALAL HYDROELECTRIC PROJECT
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SUCCESSFUL DESIGN AND DEVELOPMENT OF 'ADDITIONAL REPAIR SEAL' AT SITE FOR FRANCIS TURBINES OF 6 X 115 MW SALAL HYDROELECTRIC PROJECT

机译：6 X 115 MW咸水电项目弗朗西斯汽轮机现场“附加修补密封”的成功设计与开发

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"The role of turbine sealing in reducing the adverse and harmful affects associated with the flow of unregulated "leakage water" into turbine top cover is very well known to the designers/manufacturers and users of the hydraulic turbines. The design of the turbine sealing suitable for excessive silty water containing substantial quantities of quartz (a known hard material) presents unique and challenging problems to the designers in their endeavor to produce an effective silt friendly design. Incidentally, the above was not envisaged for Francis type vertical turbines of 6 x 115 MW Salal project and results are therefor all to see. It has been observed that turbine seals fail a number of times during the monsoon periods, sometimes within a few hours of installation. Ineffectiveness of the existing repair seal compounded the problems and discouraged the operating engineers from repeated and time consuming process of main seal replacements necessitating the requirement of modified and effective repair and maintenance seal. Thus the concept of "additional repair seal" for turbines of Salal project was born. Engineers at Salal project converted the above challenge into an opportunity for development and initially conceived a novel idea and then successfully designed, developed, fabricated and erected an additional repair seal in one turbine for in-situ testing within a very short period. After successful testing, the additional repair seals have been installed in the turbines of the six generating units. Moreover, the total work was completed at site without any outside help and all the additional repair seals are presently under use bringing substantial benefits to the project in terms of higher machine availability and increased energy generation etc."
机译：“水轮机密封在减少与未经调节的“渗漏水”流入水轮机顶盖相关的不利和有害影响方面的作用，对于水轮机的设计者/制造商和用户来说是众所周知的。对于含大量石英（已知的硬质材料）的过多粉砂水，设计人员在进行有效的粉砂友好型设计时会遇到独特且具有挑战性的问题，但对于6 x 115的弗朗西斯式立式涡轮机，则无法实现上述目标MW Salal项目和结果有目共睹，已经观察到，在季风期间，涡轮机密封件会多次失效，有时会在安装后的几个小时内失效；现有维修密封件的无效性使问题更加复杂，并且使运营工程师感到沮丧从重复和耗时的主密封件更换过程中需要改进和改进有效的维修和保养密封。因此，Salal项目涡轮机的“附加维修密封件”概念诞生了。 Salal项目的工程师将上述挑战转化为发展机遇，最初提出了一个新主意，然后在非常短的时间内成功地设计，开发，制造并竖立了一台涡轮机中的其他维修密封件，用于现场测试。在成功测试之后，已在六个发电机组的涡轮机中安装了其他维修密封件。此外，总的工作在现场完成，没有任何外部帮助，目前正在使用所有其他维修密封件，从更高的机器利用率和增加的能源产生等方面为该项目带来实质性的好处。”

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