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首页> 外文会议>ASME Power Conference 2005: Includes Papers from the 2005 International Conference on Power Engineering(ICOPE) pt.A >ALSTOM-CPS SAN ANTONIO RETROFIT OF JK SPRUCE UNIT 1 HP-IP TURBINE -AN EXAMPLE OF AN ADVANCED STEAM TURBINE UPGRADE FOR IMPROVED PERFORMANCE BY A NON-OEM SUPPLIER
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ALSTOM-CPS SAN ANTONIO RETROFIT OF JK SPRUCE UNIT 1 HP-IP TURBINE -AN EXAMPLE OF AN ADVANCED STEAM TURBINE UPGRADE FOR IMPROVED PERFORMANCE BY A NON-OEM SUPPLIER

机译：JK云杉单元1 HP-IP涡轮的ALSTOM-CPS SAN ANTONIO改造-非OEM供应商改进性能的高级蒸汽涡轮升级示例

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This paper describes in detail ALSTOM's steam path upgrade of JK Spruce Unit 1 GE 'G2' HP-IP turbine cylinder. The retrofit features high performance impulse technology three dimensional blade designs for short height turbine stages. Performance improvement was achieved through improved aerodynamic design and increased stage count in the HP expansion (the number of stages in the IP remained unchanged in order to maintain the steam conditions in an extraction part-way down the steam path). The unit was also converted from partial arc to full arc steam admission during the retrofit which resulted in additional performance improvement at full load conditions. Performance guarantees for the retrofit were given in the form of absolute values for HP and IP cylinder adiabatic efficiency and a guarantee on absolute post-retrofit output power. The guarantee levels were based on in-house performance prediction method for turbine cylinders employing the Company's low reaction technology blading. The code is based on the method first described by Craig and Cox, which has been continuously updated and developed to correctly account for advances in the company's steam path technology over time. The guarantee for the HP cylinder efficiency (excluding the effect of inlet valve pressure drop) was 93.0%, the IP cylinder was guaranteed to achieve an efficiency of 92.8% excluding valves. The retrofit performance achieved was verified by enthalpy drop tests on the HP and IP expansions and the guaranteed performance levels were achieved in both cases. The centre-gland leakage was also measured as part of the performance guarantee testing. A novel method using the centre-gland blowdown pipe was employed, as an alternative to the temperature variation method. This alternative approach is described in the paper. The retrofit has now been in operation for a period of approximately two years and following the initial guarantee testing, additional performance tests have taken place at various points during this period. The data allows any degradation in the performance of the retrofit cylinder over time to be assessed. This is also discussed in the paper.
机译：本文详细介绍了ALSTOM对JK云杉单元1 GE'G2'HP-IP涡轮机汽缸的蒸汽路径升级。该改造具有高性能脉冲技术的三维叶片设计，适用于短高度涡轮级。通过改进的空气动力学设计和增加HP扩展中的级数（IP的级数保持不变，以便在蒸汽路径的中途保持抽气状态）来实现性能改善。在改造过程中，该设备还从部分电弧转化为全电弧蒸汽，从而在满负荷条件下进一步提高了性能。改装的性能保证以HP和IP气缸绝热效率的绝对值以及改装后绝对输出功率的绝对值形式提供。保证水平基于采用公司低反应技术叶片的涡轮机气缸内部性能预测方法。该代码基于Craig和Cox最初描述的方法，该方法已经过不断更新和开发，以正确反映公司随时间推移而发展的蒸汽路径技术。 HP气缸效率的保证（不包括进气阀压降的影响）为93.0％，IP气缸的不包括阀的效率保证为92.8％。通过对HP和IP扩展进行焓降测试验证了所获得的改造性能，并且在两种情况下均达到了保证的性能水平。作为性能保证测试的一部分，还测量了中心密封泄漏。采用了一种使用中心密封排污管的新方法，作为温度变化方法的替代方法。本文介绍了这种替代方法。改造工作已经进行了大约两年，在进行了最初的保证测试之后，在此期间的各个时间点进行了额外的性能测试。该数据允许评估随时间变化的改装气缸性能的任何下降。本文也对此进行了讨论。

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