GB/T 22581-2024Fundamental technical requirements for Francis pump-turbines (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document replaces GB/T 22581-2008 "Basic Technical Requirements for Mixed Flow Pump Turbines" and is consistent with GB/T 22581-2008.

In addition to structural adjustments and editorial changes, the main technical changes are as follows:

a) The terms "upper reservoir check flood level", "lower reservoir check flood level", "lower reservoir normal high water level" and "weighted average head" have been deleted. (See 3.1.1, 3.1.6, 3.1.9, 3.3.4 of the 2008 edition);

b) The definitions of head and lift have been changed (see 3.3, 3.3 of the 2008 edition);

c) Added the terms "abnormally low head", "S zone margin", "hump zone margin", "hydraulic excitation", "dynamic and static interference", "phase resonance", "normal "Operating conditions", "transition conditions" and "special conditions" (see 3.3.5, 3.12~3.16, 3.17.1, 3.17.2, 3.17.3);

d) The relevant definitions of efficiency have been changed (see 3.7, 3.7 of the 2008 edition);

e) The relevant definitions of pressure pulsation have been changed (see 3.11, 3.11 of the 2008 edition);

f) The description of bolt prestressing requirements has been changed (see 4.2.2.6, 4.2.2.6 of the 2008 edition);

g) Changed "pressurized water supply system" to "pressurized water system" and updated the relevant content (see 4.2.4, 4.2.4 of the 2008 edition);

h) Added that under the nominal frequency of the power grid, the margin of the turbine operating condition in the S zone should not be less than 0.06xHgmin 8m (see 5.4.1);

i) Added requirements on the effects of hydraulic excitation, dynamic-static interference, and phase resonance on operational stability (see 5.4.5);

j) Deleted some clauses of "Vibration" and incorporated its related requirements into "Pump Turbine Operation Stability" (see 5.4.6~5.4.9, 2008 Version 5.5);

k) The relevant contents of the vertical and horizontal vibration values of the top cover have been changed (see Table 2, Table 2 of the 2008 edition);

l) The guide vane leakage requirements have been changed (see 5.6, 5.7 of the 2008 edition);

m) The noise requirements have been changed (see 5.7 and 5.8 of the 2008 edition);

n) Changes to the scope of supply and spare parts, data and drawings, factory inspection and testing, nameplates, packaging, transportation and storage, installation, transportation Implementation, maintenance and acceptance test (see Chapter 6 to Chapter 10, Chapter 6 to Chapter 10 of the 2008 edition).

1 Scope

This document specifies the technical requirements, performance guarantee, scope of supply and spare parts, data and drawings, engineering The basic technical conditions for factory inspection and testing, as well as the requirements for nameplate, packaging, transportation and storage, installation, operation, maintenance and acceptance testing.

This document is applicable to the research and development, design, manufacturing, installation, commissioning, operation and maintenance of single-stage mixed flow pump turbines.

It is used for reference by machines, diagonal flow pump turbines and variable speed mixed flow pump turbines.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

GB/T 150 Pressure Vessels

GB/T 191 Pictorial markings for packaging, storage and transportation

GB/T 2900.45 Electrical terminology - Hydraulic machinery and equipment for hydropower stations

GB/T 3323.1 Non-destructive testing of welds - Radiographic testing - Part 1: Film techniques for X-ray and gamma-rays

GB/T 8564 Technical specification for installation of hydro-generator sets

GB/T 9239.1 Mechanical vibration steady-state (rigid) rotor balancing quality requirements Part 1: Specification and balance tolerance inspection

GB/T 9797 Metallic and other inorganic coatings Nickel, nickel-chromium, copper-nickel and copper-nickel-chromium electroplated coatings

GB 11120 Turbine Oil

GB/T 11345 Ultrasonic testing technology, testing levels and assessment for non-destructive testing of welds

GB/T 11805 Basic technical requirements for automation components (devices) and systems of hydro-generator sets

GB/T 15468 Basic technical requirements for hydraulic turbines

GB/T 15469.2 Cavitation erosion assessment of hydraulic turbines, storage pumps and pump-turbines Part 2: Cavitation erosion assessment of storage pumps and pump-turbines Corrosion Assessment

GB/T 15613 Acceptance test of hydraulic turbines, storage pumps and pump-turbine models

GB/T 17189 Specification for field testing of vibration and pulsation of hydraulic machinery (turbines, storage pumps and pump turbines)

GB/T 18482 Start-up and trial operation procedures for reversible pumped storage units

GB/T 20043 Specification for on-site acceptance test of hydraulic performance of turbines, storage pumps and pump-turbines

GB/T 28546 Specification for packaging, transportation and storage of large and medium-sized hydropower units

GB/T 32894 Technical Guidelines for Operation Mode Conversion of Pumped Storage Units

DL/T 293 Pumped Storage Reversible Pump Turbine Operating Procedure

JB/T 1270 Technical requirements for main shaft forgings of turbines and hydro-generators

JB/T 7349 Stainless steel turbine blade castings

JB/T 10264 Francis turbine welded runner upper crown and lower ring castings

NB/T 35035 Technical regulations for the design of hydraulic machinery auxiliary equipment systems in hydropower plants

NB/T 47013.2 Nondestructive testing of pressure equipment Part 2: Radiographic testing

NB/T 47013.3 Nondestructive testing of pressure equipment Part 3: Ultrasonic testing