ДСТУ EN IEC 62364:2022 Гидравлические машины. Рекомендации по борьбе с гидроабразивной эрозией в турбинах Каплана, Фрэнсиса и Пелтона (EN IEC 62364:2019, IDT; IEC 62364:2019, IDT)

ДСТУ EN IEC 62364:2022
(EN IEC 62364:2019, IDT; IEC 62364:2019, IDT)

Гідравлічні машини. Рекомендації щодо боротьби з гідроабразивною
ерозією в турбінах Каплана, Френсіса та Пелтона

 
 
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

CONTENTS

FOREWORD

INTRODUCTION

1 Scope

2 Terms, definitions and symbols

3 Prediction of hydro-abrasive erosion rate

3.1 Model for hydro-abrasive erosion depth

3.2 Reference model

3.3 Simplified hydro-abrasive erosion evaluation

4 Design

4.1 General

4.2 Selection of materials with high resistance to hydro-abrasive erosion and coating

4.3 Stainless steel overlays

4.4 Water conveyance system

4.5 Valve

4.6 Turbine

4.6.1 General

4.6.2 Hydraulic design

4.6.3 Mechanical design

5 Operation and maintenance

5.1 Operation

5.2 Spares and regular inspections

5.3 Particle sampling and monitoring

6 Materials with high resistance to hydro-abrasive erosion

6.1 Guidelines concerning relative hydro-abrasive erosion resistance of materials including hydro-abrasive erosion resistant coatings

6.2 Guidelines concerning maintainability of hydro-abrasive erosion resistant coating materials

7 Guidelines on insertions into specifications

7.1 General

7.2 Properties of particles going through the turbine

7.3 Size distribution of particles

Annex A (informative) PL calculation example

Annex B (informative) Measuring and recording hydro-abrasive erosion damages

Annex C (informative) Monitoring of particle concentration and properties and water sampling procedure

Annex D (informative) Procedures for analysis of particle concentration, size, hardness and shape

Annex E (informative) Frequency of sediment sampling

Annex F (informative) Typical criteria to determine overhaul time due to hydroabrasive erosion

Annex G (informative) Example to calculate the hydro-abrasive erosion depth

Annex H (informative) Examples to calculate the TBO in the reference model

Annex I (informative) Background for hydro-abrasive erosion depth model

Annex J (informative) Quality control of thermal sprayed WC-CoCr

Bibliography