GB/T 17623-2017 English PDF

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GB/T 17623-2017: Determination of component contents of gases dissolved in insulating oil by gas chromatography method
Status: Valid

GB/T 17623: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17623-2017	539	Add to Cart	5 days	Determination of component contents of gases dissolved in insulating oil by gas chromatography method	Valid
GB/T 17623-1998	679	Add to Cart	3 days	Determination of componental contents of gases dissolved in insulating oil by gas chromatography method	Obsolete

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Basic data

Standard ID: GB/T 17623-2017 (GB/T17623-2017)
Description (Translated English): Determination of component contents of gases dissolved in insulating oil by gas chromatography method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F24
Classification of International Standard: 27.100
Word Count Estimation: 27,218
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
Older Standard (superseded by this standard): GB/T 17623-1998
Quoted Standard: GB/T 6683; GB/T 7252; GB/T 7597; IEC 60567
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 method for the determination of the dissolved gas components (including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, oxygen and nitrogen, etc.) in the insulating oil by gas chromatography. This standard is applicable to the determination of the dissolved gas components (including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, oxygen and nitrogen, etc.) in the insulating oil of the oil-filled electrical equipment. The content of propane and propylene can also be determined by referring to the method. The free gas in the oil-filled electrical equipment (gas in the gas relay, oil gas in the equipment, etc.) can be used to analyze the component content with reference to this standard.

GB/T 17623-2017: Determination of component contents of gases dissolved in insulating oil by gas chromatography method

---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.
Determination of componental contents of amounts of dissolvedin insulating oil by gas chromatography method ICS 27.100 F24 National Standards of People's Republic of China Replacing GB/T 17623-1998 The amount of dissolved gas in the insulating oil Determination of gas chromatography Determination ofcomponentalcontentsofgasesdissolved 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1 2 normative reference document 1 3 Summary of methods 1 4 sample collection 1 5 equipment and materials 1 6 minimum detection sensitivity 4 7 Preparation 5 8 Test step 5 9 Test results 10 Appendix A (normative) Mercury vacuum degassing method --- Toepler pump (Toeplerpump) degassing method 12 Appendix B (informative) Determination of dissolved gas in insulating oil 15 Appendix C (informative) Calibration and analytical methods for automatic injection vacuum degassing equipment 17 Appendix D (Normative Appendix) Determination of Gas Distribution Coefficient in Insulating Oil Appendix E (informative) Gas distribution coefficient of imported mineral insulating oil 20 Appendix F (informative) Secondary dissolution equilibrium assay 21 APPENDIX G (INFORMATION APPENDIX) Headspace Gas Chromatographic Determination of Acetone Content in Transformer Oil

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 17623-1998 "Gas chromatographic determination of dissolved gas components in insulating oil", and GB/T 17623- 1998, the main technical changes are as follows. - modified normative reference documents (see Chapter 2, Chapter 2 of.1998); - modified automatic piston degassing for variable piston pumps (see 5.1.2,.1998 5.1.2); - an automatic headspace sampler has been added (see 5.1.3); --- increase the chromatographic process (see Table 1, No. 4); The modified stationary phase has been modified to add a mixed stationary phase and a capillary column chromatographic process (see Table 2, Table 2 of.1998); - prepared to increase the automatic headspace injection method to modify the vacuum degassing method (see 7.1,.1998 edition 7.1); - The experimental procedure adds the automatic headspace injection method (see 8.1.1.2.2, 8.2.1), modified the vacuum deaeration method (see 8.1.1.2,.1998 Version 8.1.2); --- Calculation of the results of the increase in the headspace of the gas volume calculation formula [see 8.3.1.1 of the formula (5)] Vacuum degassing oil dissolved gas The composition formula has been modified [see equation (9) in 8.3.2.2,.1998 (8)]; - Added calibration and analysis methods for automatic injection vacuum evacuation devices (see Appendix C); - increase the gas distribution coefficient of imported mineral insulating oil (see Appendix E); --- Added headspace gas chromatography to determine the amount of acetone in the transformer oil (see Appendix G). This standard is proposed by the China Electricity Council. This standard is under the jurisdiction of the National Electrification Standardization Technical Committee (SAC/TC322). The main drafting unit of this standard. Xi'an Thermal Engineering Research Institute Co., Ltd., State Grid Fujian Electric Power Co., Ltd. Electric Power Research Institute, State Network Lake South Electric Power Company Electric Power Research Institute, Guangdong Power Grid Co., Ltd. Electric Power Research Institute, State Grid Jiangsu Electric Power Company Electric Power Research Academy. The main drafters of this standard. Meng Yuchan, Zheng Dongsheng, Qian Yihua, Zhu Hongbin, Feng Liping, Zhou Zhou, Lian Hongsong, Zhang Yufu, Lamen, Yu Xiang. This standard replaced the previous version of the standard release. --- GB/T 17623-1998. The amount of dissolved gas in the insulating oil Determination of gas chromatography

1 Scope

This standard specifies the dissolved gases in the insulating oil (including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, oxygen and Nitrogen, etc.) content by gas chromatography. This standard applies to the dissolved gas components of the insulating oil in the oil-filled electrical equipment (including hydrogen, methane, ethane, ethylene, acetylene, Carbon, carbon dioxide, oxygen and nitrogen). The content of propane and propylene can also be measured by referring to the present method. The free gas in the oil-filled electrical equipment (gas in the gas relay, oil gas in the equipment, etc.) can be used to refer to this standard. analysis.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Petroleum products - Test methods - Determination of precision data GB/T 7252 Guidance for the analysis and determination of dissolved gases in transformer oils GB/T 7597 Sampling method for power oil (transformer oil, turbine oil) IEC 60567 Oil-filled electrical equipment Gas sampling and analysis of free and dissolved gases (Oil-filedelectricalequipment- Samplingofgasesandanalysisoffreeanddissolvedgases-Guidance

3 Summary of methods

The method firstly collects the oil sample, then takes out the dissolved gas in the oil sample, then separates and detects the gas components by gas chromatograph, Calculate the dissolved gas composition in the oil. The dissolved gas in the oil was analyzed at a temperature of 20 ° C and a pressure of 101.3 kPa per liter The number of microliters (μL/L) of each gas component contained in the oil is expressed.

4 sample collection

The oil samples collected by this method shall be carried out according to the relevant provisions of GB/T 7597 fully sealed. In the transport, storage process Should pay attention to the sample dust, shock, dark and dry.

5 equipment and materials

5.1 Oil and gas separation device A device for separating dissolved gases from the oil may be selected from one of the following instruments. a) constant temperature timed oscillator. Reciprocating oscillation frequency 275 times/min ± 5 times/min, amplitude 35mm ± 3mm, temperature control accuracy ± 0.3 ℃, timing accuracy ± 2min. ......

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