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聚合物涂层在水轮机过流部件防护中的应用

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  • 1西安热工研究院有限公司; 2四川华能康定水电有限责任公司; 3四川华能宝兴河水电有限责任公司
刘 刚(1988-),硕士,高级工程师,主要从事电站重要金属部件表面焊接修复及防护技术的研究,E-mail:398455177@qq.com

收稿日期: 2023-04-19

  修回日期: 2023-05-12

  录用日期: 2023-06-10

  网络出版日期: 2023-10-15

基金资助

华能集团总部科技项目(HNKJ21-HF243)资助

Application of Polymer Coatings for the Protection of Hydraulic Turbines Flow Components

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  • (1.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China;2.Sichuan Huaneng Kangding Hydropower Co., Ltd., Chengdu 610041, China;3.Sichuan Huaneng Bao-xing River Hydropower Co., Ltd., Ya’an 625099, China)

Received date: 2023-04-19

  Revised date: 2023-05-12

  Accepted date: 2023-06-10

  Online published: 2023-10-15

摘要

水轮机在使用过程中长期受到含沙水流的冲击,泥沙的冲蚀与气泡空蚀耦合破坏对过流部件造成了严重的破坏,影响机组安全稳定运行。 通过高弹性聚合物涂层对过流部件进行表面防护是一种经济且实用的策略。在此,首先综述了过流部件表面抗空蚀防护聚合物涂层,尤其是聚氨酯和环氧树脂涂层的研究进展;其次,考虑到含沙水流的冲蚀和磨蚀作用在水轮机损伤中的重要影响,对聚合物/陶瓷复合涂层在协同抗空蚀和冲蚀的研究进展进行了评述;最后对聚合物涂层在水轮机过流部件防护方面存在的问题进行了阐述。

本文引用格式

刘刚, 江雄, 郎梼, 杨济铖, 田斌, 李勇, 刘福广, 孙睿 . 聚合物涂层在水轮机过流部件防护中的应用[J]. 材料保护, 2023 , 56(10) : 194 -203 . DOI: 10.16577/j.issn.1001-1560.2023.0250

Abstract

During operation, hydraulic turbines are continuously subjected to long-term impact from sediment-laden water flows.The combined damage from sediment erosion and cavitationerosion significantly impairs the flow components,compromising the safe and stable operation of the unit.Surface protection of the flow components by means of high-elastic polymer coatings is an economical and practical strategy.In this paper,firstly, the anti-cavitation protective polymer coatings on the surfaces of flow components were reviewed, especially research progress on polyurethane and epoxy resin coatings.Considering the important influence of the erosive and abrasive effects of sediment-laden water flows in the damage of hydraulic turbines,the research progress of polymer/ceramic composite coatings in the synergistic resistance to cavitation and erosion was reviewed; finally, the problems of polymer coatings in the protection of hydraulic turbine flow components were described.

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