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GB/T 15469.1-2008: Hydraulic turbines, storage pumps and pump-turbines cavitation pitting evaluation -- Part 1: cavitation pitting evaluation in reaction turbines
Status: Valid GB/T 15469.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 15469.1-2008 | English | 419 |
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Hydraulic turbines, storage pumps and pump-turbines cavitation pitting evaluation -- Part 1: cavitation pitting evaluation in reaction turbines
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GB/T 15469.1-2008
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| GB/T 15469-1995 | English | 399 |
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Cavitation pitting evaluation in reaction hydraulic turbines
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GB/T 15469-1995
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PDF similar to GB/T 15469.1-2008
Standard similar to GB/T 15469.1-2008 GB/T 14478 GB/T 15468 GB/T 14478 GB/T 28572 Basic data | Standard ID | GB/T 15469.1-2008 (GB/T15469.1-2008) | | Description (Translated English) | Hydraulic turbines, storage pumps and pump-turbines cavitation pitting evaluation -- Part 1: cavitation pitting evaluation in reaction turbines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K55 | | Classification of International Standard | 27.140 | | Word Count Estimation | 18,111 | | Date of Issue | 2008-06-30 | | Date of Implementation | 2009-04-01 | | Older Standard (superseded by this standard) | GB/T 15469-1995 | | Quoted Standard | GB/T 2900.45; GB/T 15468 | | Adopted Standard | IEC 60609-1-2004, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 11 of 2008 (No. 124 overall) | | 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 at a given condition (as stipulated in the contract power, hydro specific energy (head), speed, materials, operating conditions and operating time, etc.) of certain provisions of the flow components caused due to cavitation material loss measurement and evaluation methods. Shall specify in the contract in reaction turbine operating range of all or part of the existence of cavitation. Cavitation should be clearly defined and guaranteed value. This section does not include the turbine cavitation may impact other properties, such as: power, efficiency, vibration, mechanical and machine noise, exposed in the operation of material defects. Operation due to excessive wear and tear flow components exposed material defects excluding people cavitation guaranteed. | GB/T 15469.1-2008: Hydraulic turbines, storage pumps and pump-turbines cavitation pitting evaluation -- Part 1: cavitation pitting evaluation in reaction turbines
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Hydraulic turbines, storage pumps and pump-turbines cavitation pitting evaluation Part 1. Cavitation pitting evaluation in reaction turbines
ICS 27.140
K55
National Standards of People's Republic of China
Replacing GB/T 15469-1995
Turbines, storage pumps and pump - turbines cavitation pitting evaluation
Part 1. reaction turbines cavitation assessment
(IEC 60609-1.2004, MOD)
Posted 2008-06-30
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
1.1 Overview 1
1.2 does not contain the contents of 1
1.3 Effect of water containing chemicals 1
1.4 Effect of water containing solid particles of a
2 Normative references 1
3 Terms, definitions, symbols and units 2
3.1 Terms, definitions and symbols 2
3.2 Unit 5
4 Cavitation Guarantee 5
4.1 The warranty period 5
4.2 Cavitation defined amount of 6
4.3 operating range and running time 6
5. Program 7
Cavitation warranty period repair 7 5.1
5.2 Cavitation measurement and calculation 7
Cavitation amount of assessment 6 8
Examples Appendix A (normative) cavitation The guaranteed 9
Annex B (informative) of this section with IEC 60609-1.2004 technical differences and their reasons 12
Foreword
GB/T 15469 "turbines, storage pumps and pump - turbines cavitation assessment" is divided into the following three parts.
--- Part 1. reaction turbines cavitation assessment;
--- Part 2. storage pumps and pump - turbines cavitation assessment;
--- Part 3. Pelton turbine cavitation assessment.
This section GB/T 15469 Part 1.
The partial modification of the International Electrotechnical Commission IEC 60609-1.2004 "turbines, storage pumps and pump - turbines cavitation pitting evaluation 1
Part reaction turbines assessment ", while the text, and graphics units were normalized.
The main difference between this part of IEC 60609-1 is described in Appendix B, respectively.
This Part replaces GB/T 15469-1995 "reaction turbine cavitation assessment."
Some of the major differences compared with the GB/T 15469-1995 This is.
--- Original reference standard running time of 8000h, modify this section for more run time per day plant operation
8000h or less time for the daily operation of the unit running 3000h;
--- Original standard on cavitation guaranteed value is calculated using the formula applied form part of the body in a way to modify this section by example
Consider, as an appendix A, which cavitation guaranteed value calculation formula applied by way of the curve.
Appendix A of this section is normative appendix, Appendix B is an informative annex.
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National Standardization Technical Committee turbine (SAC/TC175) centralized.
This part mainly drafted by. Dongfang Electrical Machinery Co., Ltd, China Institute of Water Resources and Hydropower, Harbin Electric Machinery Co., Ltd.
The main drafters of this section. Hi Tao group, Yujiang Cheng, Yan Zhiguo.
This part of the standard replaces the previous editions are.
--- GB/T 15469-1995.
Introduction
This section provides cavitation evaluation in reaction turbines.
The degree of reaction turbines cavitation depends on the following five main factors.
a) the type and design of the turbine;
b) material and surface state of the site of action of cavitation;
c) turbine installation elevation, or station cavitation coefficient (σP);
d) duration of operation and operating conditions;
e) water quality.
a), b) depending on the characteristics of the turbine itself. And c), d), e) depending on the operating conditions of the power plant. Thus, cavitation should be guaranteed for
The two sides need to agree in power plant planning and design stage or contract. When the requirements for renewal or wheel has a wider operating range, the supplier
In a bid to make recommendations to ensure that the amount of cavitation.
Cavitation can use the following two methods to ensure the consultation.
First, according to the contract in a given turbine installation height (corresponding to the power plant cavitation coefficient σP), and turbine size, speed, overcurrent
Component material, surface condition and operating conditions and other consultations cavitation guaranteed value (see Figure 1a);
Second, under certain conditions cavitation permitted value, consult turbine installation elevation (see Figure 1b).
In most cases, the unit normal operation without cavitation conditions, or be required to operate without cavitation conditions, sometimes for economic
Reasons, but also it allows a slight cavitation, namely turbine installation elevation above the elevation can run without cavitation.
Each station a) ~ e) items are different, the development of common acceptable cavitation allowable value is not appropriate. Therefore, it is recommended according to each
Economic assessment of plant conditions. Installation is usually lower elevation (greater station cavitation coefficient σP values \u200b\u200brequire higher costs of civil engineering) and /
Or more expensive wheel (shape and/or materials) reduces the amount of cavitation. Higher cost benefits is to reduce operating costs and reduce maintenance frequency
Rate, and can reduce downtime because of power loss.
Cavitation depth, size and function of the quality and the runner diameter, see Appendix A.
a)
1 turbine as a function of flow rate in a certain amount of time and space station cavitation erosion coefficient
b)
Figure 1 (cont.)
Turbines, storage pumps and pump - turbines cavitation pitting evaluation
Part 1. reaction turbines cavitation assessment
2 Normative references
The following documents contain provisions which, through GB/T 15469 references become part of the present provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to the research protocol to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
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