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GB/T 8117.2-2008: Rules for steam turbine thermal acceptance tests -- Part 2: Method B -- Wide range of accuracy for various types and sizes of turbines
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Rules for steam turbine thermal acceptance tests -- Part 2: Method B -- Wide range of accuracy for various types and sizes of turbines
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Basic data | Standard ID | GB/T 8117.2-2008 (GB/T8117.2-2008) | | Description (Translated English) | Rules for steam turbine thermal acceptance tests -- Part 2: Method B -- Wide range of accuracy for various types and sizes of turbines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K54 | | Classification of International Standard | 27.040 | | Word Count Estimation | 93,992 | | Date of Issue | 2008-07-02 | | Date of Implementation | 2009-04-01 | | Older Standard (superseded by this standard) | GB/T 8117-1987 | | Quoted Standard | GB/T 755.2; GB/T 2624 | | Adopted Standard | IEC 60953-2-1990, IDT | | Regulation (derived from) |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 applies to all kinds of type, capacity, and uses a wide range of precision turbine thermal acceptance tests for a specific situation, simply apply the relevant provisions of this standard. This section provides acceptance test preparation, implementation, evaluation, comparison with the guaranteed value and the calculated measurement uncertainty and other aspects uniform rules, but also contains the details of the acceptance test conditions. | GB/T 8117.2-2008: Rules for steam turbine thermal acceptance tests -- Part 2: Method B -- Wide range of accuracy for various types and sizes of turbines
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Rules for steam turbine thermal acceptance tests Part 2. Method B. Wide range of accuracy for various types and sizes of turbines
ICS 27.040
K54
National Standards of People's Republic of China
GB/T 8117.2-2008/IEC 60953-2.1990
Replacing GB/T 8117-1987
Turbine Performance acceptance test procedure
Part 2. Method B --- various types and sizes
Wide range of accuracy turbine
(IEC 60953-2.1990, IDT)
Posted 2008-07-02 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
Introduction Ⅲ
Introduction Ⅴ
1 Scope and purpose 1
1.1 Scope 1
1.2 Objective 1
1.3 Matters to be considered a contract
2 Normative references 1
3 units, symbols, terms and definitions 2
3.1 General 2
3.2 Symbols and units 2
3.3 subscript, superscript and definitions 4
3.4 define and test results to ensure that the value of 5
4 General 8
Preplanning 4.1 Test 8
4.2 Test preparation phase of the agreement and arrangements 8
4.3 Test Program 9
4.4 Preparation of test 9
12 4.5 Comparative measurements
4.6 Test of the whole set 12
4.7 preliminary test 13
4.8 Acceptance Test 13
Repeat 15 4.9 Acceptance Test
5 measurement techniques and measuring instruments 15
5.1 General 15
19 5.2 Power Measurement
5.3 Flow Measurement 20
5.4 pressure measurement (not including condensing steam turbine exhaust pressure) 25
5.5 condensing steam turbine exhaust pressure measurement 28
5.6 Temperature measurement 29
5.7 steam quality measurement 31
5.8 Time Measurement 36
36 5.9 Speed \u200b\u200bMeasurement
36 6 calculated results
6.1 Calculation ready before 36
6.2 Calculation of results 37
Comparative test results and amendment 7 with the guaranteed value of 38
7.1 guaranteed and guaranteed working conditions 38
7.2 New amendments steam flow 38
GB/T 8117.2-2008/IEC 60953-2.1990
7.3 maximum output power of 38 modified
7.4 thermal efficiency and thermodynamic efficiency of 38 amendments
7.5 Definition and Application of the correction value 39
7.6 Correction 39
41 7.7 Fixed variables considered in
7.8 Comparison with the guaranteed value of 43
7.9 turbine performance degradation (aging) 44
8 Measurement uncertainty 45
8.1 General 45
OK soda 8.2 Characteristics Measurement Uncertainty 45
8.3 output power measurement uncertainty calculations 46
8.4 Mass Flow Measurement Uncertainty OK 47
8.5 Measurement Uncertainty The results of calculation 48
Appendix A (normative) feedwater heaters and condensers leakage test 50
Appendix B (normative) to take pressure nozzle throat 51
Data processing Annex C (normative) multiple measurements, 55 compatibility
Annex D (normative) mass flow balance 56
Appendix E (normative) Test results will be corrected to ensure that conditions typical generic correction curve 58
Annex F (normative) Acceptance Test and Measurement Uncertainty error propagation concise statistical elaborated 78
Annex G (normative) output power measurement uncertainty calculations --- electrical measurements 80
GB/T 8117.2-2008/IEC 60953-2.1990
Foreword
Standard GB/T 8117 "steam turbine thermal acceptance tests" is divided into several sections, including.
--- Standard - Part 1. Method A --- for large condensing steam turbine with high accuracy test;
--- Standard - Part 2. Method B --- various types and sizes of turbines Wide range of accuracy;
--- Standard - Part 3. Thermal performance turbine transformation method C --- verification test.
This section GB/T 8117 Part 2.
This section identical with IEC 60953-2.1990 "steam turbine thermal acceptance tests - Part 2. Method B --- types and
Turbine capacity Wide range of accuracy "(in English).
This part of the drafting process, stated the IEC 60953-2.1990 original several mistakes reply IEC technical committee and do
The following relevant changes.
a) IEC 60953-2 description in Table 1, condensing unit exhaust pressure is allowed to vary "25%" to "2.5%";
d) IEC 60953-2 description Figure B. 4, "0.25mm" to "0.025mm";
e) IEC 60953-2 description Figure D. 1, added "high-pressure cylinder" diagram;
f) IEC 60953-2 description Figure D. 1, the supplement "m1 v2" diagram;
g) IEC 60953-2 Annex E original first paragraph, the correction coefficient "E" to "F";
j) IEC 60953-2 in its original form E. 1, Formula E. 11 symbol "Wax" to "Waxg";
k) IEC 60953-2 description in Appendix G, d. 2 and d. 3 formula right brace position error, has been corrected.
For ease of use, this section made the following editorial changes.
a) Delete the original IEC 60953-2 "preface" and "Preamble";
b) newly added "Normative References" section, and re-ordering of IEC 60953-2 chapter;
c) the original text of the IEC 60953-2 table reordering;
d) the original figure of IEC 60953-2 Part recompiled;
e) the original text of the IEC 60953-2 footnotes reordered.
This Part replaces GB/T 8117-1987 "steam turbine thermal acceptance testing procedures."
The newly revised GB/T 8117 series of standards and GB/T 8117-1987 compared to the scope, structure, content and requirements, etc.
There are great changes. The former according to IEC 60953 is divided into sections corresponding with a different method of steam turbine thermal acceptance test
Inspection and assessment of Turbine Performance and each part can be used alone, and more applicable to different units and different requirements for an acceptance test
want. GB/T 8117-1987 is relatively simple common test standards.
This section applies to all types and sizes of turbines width accuracy thermal acceptance tests, the test results described in the amendment
In more detail, taking into account the aging of the turbine performance correction, as well as wet steam enthalpy measuring radiation and nuclear safety issues.
This section of the Appendix A, Appendix B, Appendix C, Appendix D, Appendix E, Appendix F, Appendix G are normative appendix.
This part is proposed by the China Electricity Council.
This part of the National Standardization Technical Committee turbine (SAC/TC172) centralized.
GB/T 8117.2-2008/IEC 60953-2.1990
This section is responsible for drafting unit. Xi'an Thermal Power Research Institute Co., Ltd., Shanghai Power Equipment Research Institute.
Drafters of this section. Shiyan Zhou, Liu Chen, Liu Xiangmin, Zhang Huamin, Zhao Yi, Hu about, Yangshou Min, Cheng Pei Jun, Liu Zhijiang, Guo Jianlin,
An Minshan, Ye Fen, Zhouliang Mao, Zhu Litong.
This Part replaces the following previous release case.
--- GB/T 8117-1987.
GB/T 8117.2-2008/IEC 60953-2.1990
Introduction
With the increase in testing technology and the rapid development of the capacity of the turbine, it is necessary to test the relevant acceptance criteria GB/T 8117-1987 into
Line revision.
To meet the needs of China's power industry development and international trade, so the whole will correspond to IEC 60953 standard is divided into several parts, with if
Different method of dry steam turbine thermal acceptance tests and evaluation of Turbine Performance and each part can be used alone.
This section applies to all types and sizes of turbines width accuracy thermal acceptance tests.
1) uncertainty about the basic principles of data
Standard Part 1 (Method A) turbine performance level suitable for obtaining high accuracy of the test, the measurement uncertainty to a minimum,
The operating conditions during the test must be strictly adhered to, and enforcement.
A method is calibrated using the most accurate special instrument and using the best available testing methods. Uncertainty of the test results of phase
When the small and test results when compared with the guaranteed value need not be considered. For thermal power units, the uncertainty of not more than 0.3%; for nuclear
Motor group, no more than 0.4%.
Required for preparation and implementation of test instrumentation and labor costs for large capacity units or the first unit in the general economy or closed
Calculated.
Standard Part 2 (Method B) applies to all types and sizes of turbines, there are performance acceptance tests appropriate measurement uncertainty.
Test instruments and measurement methods should follow the provisions of this standard, using the standard test method main instruments and standards, it can be fully adopted by check
High accuracy instruments. Measurement uncertainty of test results determined by the calculation of the standard offer. Unless otherwise specified in the contract, through
Often the test results and guaranteed value to be considered when comparing the test results of measurement uncertainty, and thus the total cost of the acceptance tests and to be measured
The economic value of guaranteed value related.
In Method B, the provisions of the testing process more flexible operating conditions, and when those provisions are not met, also recommended a
These approaches.
Such as the use of the instrument and test methods meet the standards for large condensing steam thermal power units, test results measurement uncertainty is usually
Between 0.9% -1.2%; nuclear power units between 1.1% ~ 1.4%; on the back pressure, and the small-capacity steam extraction condensing steam unit, in
Between 1.5% to 2.5%. By increasing the accuracy of the instrument, mainly through the addition of the primary flow measuring point and check the main flow measuring device can enter a
Further reduce the measurement uncertainty.
2) The main difference between Method A and Method B
In Method A, the content ready for instructions guide test personnel to test, implementation and measurement techniques and other aspects of the methodology for B
More detail. In Method B, the details of such treatment more left to their own judgment and the test personnel decisions, which requires test people
Who have enough experience and expertise.
3) guiding principles
In Method A, the test preparation and test conditions, in particular, such as the duration of the test, the test conditions and stability to deviate
Between the measuring point and double the value of the allowed difference, etc. are more stringent.
It is preferably carried out after the start of the test and put into operation eight weeks. It aims to reduce the risk of deterioration in the performance of the turbine and the steam turbine damage occurs
To a minimum.
During this period should be (including enthalpy drop test included) a few preliminary tests to monitor the high pressure turbine and the intermediate pressure cylinder performance becomes
Of. However, these tests do not get the performance of low-pressure cylinder, thus acceptance tests should be carried out as soon as possible.
GB/T 8117.2-2008/IEC 60953-2.1990
In any case, when using the method A, if the enthalpy drop test showed high pressure cylinder or the pressure cylinder performance degradation, or due to the power plant Article
Members requested that preliminary tests were postponed to the first start after four months, the acceptance tests should be postponed.
When using the method A, it does not allow the results of the test Heat Rate Press Start enthalpy drop efficiency test is corrected or aging amended.
If the trial had to be postponed, Method A test is recommended after the first overhaul, and recommended before the test to determine the turbine is substantially shaped
Several methods conditions.
4) measuring instruments and methods of measurement
a) electrical power measurement
In addition to electric power measurement conditions are required in both the methods similar to, the process of A also required after each completion of a test, use of
Calibration of the ratio measuring instruments, between tolerance not greater than 0.15%.
b) flow measurement
A method of claim with the throttling device calibrated to measure the main flow. Which is recommended to take pressure nozzle throat, there is provided a design and
A detailed description of the use.
Calibration of these devices should be together with its upstream and downstream pipe and a rectifier conduct, and provides for an external push from the discharge coefficient calibration values
method.
In Method B, it is generally measured using a standard flow throttling device. On the need to reduce the total measurement uncertainty of the occasion, it is recommended in
Quasi throttle device for verification. In order to reduce the measurement uncertainty, the proposed main flow is measured by dual or multiple measuring points. Also in the standard
It describes a method for checking the consistency of the measurement.
c) pressure measurement
Requirements and recommendations for Method A and Method B is essentially the same pressure measurement, measurement methods only condensing steam turbine exhaust pressure has
Something different.
d) temperature measurement
In both methods, substantially the same as the temperature measurement requirements. A more rigorous method, however the technical details, the following.
--- Before the test, after the required verification;
--- Double major temperature measured maximum deviation value is 0.5K;
--- Thermocouple with continuous wire;
--- Overall accuracy required.
e) measuring the steam quality
Method A and Method B are identical.
5) calculation of the test results
The same calculation methods and data reduction results in Method A and Method B set forth, but in the method A, the quantitative analysis to
More stringent requirements.
To avoid leaving the test did not meet certain requirements set aside, Method B provides some recommendations to deal with such situations.
In addition, the method B also provides a detailed calculation of measured variables and test results uncertainty.
Method B also after the specified test period and without prior inspection and test and evaluation recommended a number of other methods.
6) Correction of test results and comparison with guaranteed values
Method A and Method B provides the results corrected to ensure that working conditions approach.
A proposed method of test results with guaranteed values, irrespective of the measurement uncertainty of the test results.
Method B provides a wide range of amendments approach. In addition, when considering the comparison of test results with the guaranteed value measurement uncertainty.
7) recommendations
Because in the plant design phase should consider acceptance test methods to be used, therefore, should as soon as possible to determine what method, and in the best
GB/T 8117.2-2008/IEC 60953-2.1990
Turbine order contract to be determined.
Method B can be applied to the turbine acceptance tests of various types and sizes. Should as soon as possible to determine the measurement uncertainty required in order to
Take the necessary measures in the plant design.
If the warranty is the entire plant, or most of the equipment, then the acceptance test according to the definition of the guaranteed value, the use of any kind
The method of the related content.
GB/T 8117.2-2008/IEC 60953-2.1990
Turbine Performance acceptance test procedure
Part 2. Method B --- various types and sizes
Wide range of accuracy turbine
1 Scope and purpose
1.1 Scope
GB/T 8117 This section is applicable to various types, capacity and uses a wide range of accuracy turbine thermal acceptance tests,
For a specific situation, simply apply the relevant provisions of this standard.
This section provides test methods for saturated steam or superheated steam turbine. Including the identification and measurement of wet steam specific enthalpy required parties
Law and describes measures to prevent the test required in nuclear power plants, taking into account the situation of radioactive safety regulations carried out.
This section provides ready acceptance test, implement, evaluate, compare and ensure respect values \u200b\u200band calculating measurement uncertainty degree of unity
Rules also contain details of the conditions for the acceptance test.
If you have any complicated or special situations not covered in this section, the manufacturer and the purchaser should strike the right before the contract is signed
protocol.
1.2 Purpose
Turbine and steam turbine thermal acceptance tests described in this section, which aims to verify the following to ensure that the values \u200b\u200bprovided by the manufacturer.
a) the thermal efficiency of the steam turbine or heat consumption rate group;
Thermodynamic efficiency or steam consumption rate b) or the provisions of the turbine output power of the steam flow rates;
c) main steam flow capacity and (or) the maximum output power.
Its provisions should ensure that the value of the expression is complete and no contradictions (see 3.4). Acceptance tests may also include a guarantee by the conditions required to be corrected
Some measurements and check the test results.
1.3 contract matters for consideration
Some items in this section should be considered at an early stage, these matters will be dealt with in the following terms.
Provision
1.1 (paragraph 4)
1.2 (paragraph 2)
4.1 (3rd and 4th paragraph)
4.3.3 (para. 1)
7.6
7.8
7.9 (paragraph 1)
2 Normative references
The following documents contain provisions which, through reference to GB/T 8117 to the present, constitute 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 research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 755.2 rotating electrical machines (excluding traction motors) Test Method for losses and efficiency (GB/T 755.2-2003 determined,
IEC 60034-2. 1972, IDT)
GB/T 8117.2-2008/IEC 60953-2.1990
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