GB/T 29403-2012 English PDF

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Basic data

Standard ID: GB/T 29403-2012 (GB/T29403-2012)
Description (Translated English): Technique guide for dealing with sand abrasive erosion in reaction hydraulic turbine
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K55
Classification of International Standard: 27.140
Word Count Estimation: 25,252
Quoted Standard: GB/T 2900.45; GB/T 8564; GB/T 10969; GB/T 15468; GB/T 15469.1; SL 142; DL/T 838-2003; IEC 60193
Regulation (derived from): National Standards Bulletin 2012 No. 42
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the reaction turbine selection, design, manufacture, installation, operation, maintenance and repair of technical requirements related to sand abrasion. This standard applies to hydroelectric turbine installation counterattack.

GB/T 29403-2012: Technique guide for dealing with sand abrasive erosion in reaction hydraulic turbine

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Technique guide for dealing with sand abrasive erosion in reaction hydraulic turbine ICS 27.140 K55 National Standards of People's Republic of China Reaction turbine to sand abrasion Technical Guidelines Issued on. 2012-12-31 2013-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 General 4 5 sediment passing through turbine analysis and prevention measures for sediment Station 4 Turbine selection and design 5 6 7 turbine material selection and manufacturing 6 Turbine installation 7 8 9 Turbine Operation and Maintenance 7 10 turbine sand abrasion guarantee value 8 Appendix A (informative) wear test apparatus and test methods 9 Application of Annex B (informative) Turbine commonly used materials and protective materials 15 Annex C (informative) turbine wear observations 17

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by the People's Republic of China Ministry of Water Resources. This standard by the Ministry of Water Resources and Hydropower Planning and Design centralized. This standard is drafted by. China Institute of Water Resources and Hydropower. Participated in the drafting of this Standard. China Three Gorges Corporation, Harbin Institute of Electronics, Dongfang Electrical Machinery Co., Ltd., water north Survey Design and Research Co., Ltd. The main drafters of this standard. the land force, Wu Peihao, Yujiang Cheng, Wu Jian, Xu Hongquan, Dai Jiang, Masu Ping, Shi Qinghua, Liu Jie, Wuxi Dong, Gu four lines, Juan, sinus pine.

Introduction

High sediment content in many of our rivers, sand abrasion turbine problem is very prominent. In order to effectively reduce sediment turbine Hazards, ensuring economic and safe operation of the station should be in the design and selection of hydropower turbines, design, manufacture, installation, operation, maintenance and repair Wear problems and other aspects to consider and take appropriate action, it is necessary to develop this standard. Study on the sediment carried turbine wear more than 50 years of history, especially in the past 30 years about the research, design, manufacture, operation Each party maintenance and other units, sediment wear mechanism turbines, two-phase flow theory, model selection, anti-wear measures, operation and maintenance, testing technology Surface, a lot of experimental research and practice, access to a wealth of research and practical experience, this standard has laid a good preparation Good foundation. Reaction turbine to sand abrasion Technical Guidelines

1 Scope

This standard specifies the reaction turbine selection, design, manufacture, installation, operation, maintenance and repair of technology involved in sand abrasion Claim. This standard applies to installations in reaction turbines Hydropower Station. Note. For water containing corrosive substances or pH turbine protection and greater precautions and other water conditions need separate consideration.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2900.45 Electrotechnical terminology Hydropower Plant Equipment GB/T 8564 Specification for installation of hydro-generating unit GB/T 10969 turbines, storage pumps and pump turbine passage components conditions GB/T 15468 Turbine basic technical requirements GB/T 15469.1 turbines, storage pumps and pump - turbines cavitation pitting evaluation - Part 1. Evaluation in reaction turbines cavitation of SL142 muddy water turbine model acceptance test procedure (with provision in) DL/T 838-2003 Guide of maintenance for power plant equipment IEC 60193 turbines, storage pumps, pump turbine model acceptance test procedure (Hydraulicturbines, storagepumps andpump-turbines-Modelacceptancetests)

3 Terms and Definitions

GB/T 2900.45, GB/T 15468 and GB/T 15469.1 defined and the following terms and definitions apply to this document. 3.1 Reaction turbine reactionhydraulicturbine By interacting with the runner blade flow will flow potential and kinetic energy is converted into mechanical energy output from the turbine. NOTE. The main types of reaction turbine Francis turbine, axial flow turbine, oblique flow turbine and tubular turbines and the like. 3.2 Cavitation cavitation Water partial pressure in the flow path down to the critical pressure (generally close to the vapor pressure), the water and air nuclear development to grow into bubbles, bubble Accumulation, flow, division and general collapse of the process. 3.3 Aspiration height staticsuctionhead Hs Cavitation plane turbine tail water level with a predetermined elevation difference. Note. The height of aspiration units represented by m. ......

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