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GB/T 32745-2016: Guidelines on protection against sand abrasion and cavitation for small hydraulic turbines
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GB/T 32745-2016: Guidelines on protection against sand abrasion and cavitation for small hydraulic turbines

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Guidelines on protection against sand abrasion and cavitation for small hydraulic turbines ICS 27.140 K55 National Standards of People's Republic of China Guidance on abrasion protection for small turbines 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I 1 Scope 1 2 normative reference document 1 3 terms, definitions and symbols 4 General provisions 3 Investigation and analysis of sediment data of power station 4.2 Observation of turbine abrasion 4 A preliminary judgment of the degree of abrasion 6 material protection 5 6.1 Selection of material protection 5 6.2 Implementation of material protection measures 5 6.3 Inspection and maintenance of protective coating 7 7 Integrated protective measures 7 Design of Hydropower Station and Design of Hydraulic Turbine 7 7.2 Turbine Manufacturing and Installation 9 7.3 Turbine operation, maintenance and repair 9 Appendix A (informative) Different types of turbine main abrasive parts 10 Appendix B (informative) Characteristics of turbine turbine failure characteristics 12 Appendix C (informative) Common substrate and range of use for water turbines 13 Appendix D (informative) Material protection measures and scope of application 14

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and centralized by the Ministry of Water Resources of the People's Republic of China. This standard is responsible for drafting units. China Institute of Water Resources and Hydropower Research. This standard participates in the drafting unit. the Ministry of Water Resources Product Quality Standards Institute, the North Water Survey and Design Research and Research Co., Ltd. The main drafters of this standard. Yu Jiangcheng, Lu Li, Yao Guang, Liu Juan, Cheng Wentao, Chen Rui, Zhang Xu, Tang Yongjun, Wang Kai, Liu Xian. Guidance on abrasion protection for small turbines

1 Scope

This standard specifies the protective measures (including material protection measures and comprehensive protective measures) required for the protection of small turbine abrasion and Technical requirements. This standard applies to turbine power protection of 500 kW to 15 MW, including new construction, expansion, alteration or commissioning Station turbine abrasion protection. Power station installed capacity of less than 500kW turbine abrasion protection, can refer to the implementation of this standard.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 2900.45 Electrotechnical terminology Hydrographic equipment for hydropower stations Specification for installation of GB/T 8564 hydro - generator sets General rules for surface pretreatment of thermal sprayed metal parts GB/T 11373 GB/T 15469.1 Evaluation of cavitation erosion of turbines, pump and water pump turbines - Part 1. Cavitation assessment of counterattack turbines GB/T 21718 basic technical conditions for small turbines Technical guide for abrasion of counterattack turbine Guide for maintenance of equipment for DL/T 838 power generation enterprises Code for analysis of sediment in river 3 terms, definitions and symbols GB/T 2900.45, GB/T 21718 and GB/T 15469.1 and the following terms, definitions and symbols apply to this document. 3.1 Wear sedimentabrasion Damage to the material caused by the surface of the overcurrent component. 3.2 Wear amount of amountofabrasion The amount of material damage on the surface of the overcurrent component due to wear. Note. The wear can be expressed by the wear depth ΔH, the wear area A, the mass loss G, or the volume loss V. Its units were mm, cm2, kg or cm3 Said. 3.3 Sediment content Sediment content in unit volume water - sediment mixture. Note. The unit of sediment concentration is expressed in kg/m3. 3.4 Multi - year average sediment concentration meanannualsedimentcontent SP Average annual average sediment concentration of measured data over the years. Note. The unit of annual average sediment concentration is expressed in kg/m3. ...