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GB/T 25986-2010: Filling device of natural gas vehicles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 25986-2010: Filling device of natural gas vehicles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT25986-2010GB ICS 43.020 T 09 National Standard of the People’s Republic of China Filling device of natural gas vehicles Issued on: JANUARY 10, 2011 Implemented on: MAY 1, 2011 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 5 4 Basic types, specifications and models ... 5 5 Requirements ... 6 6 Test methods ... 8 7 Inspection rules ... 13 8 Marks, packaging, transportation and storage ... 14 9 Exit-factory files ... 15 Appendix A ... 16 Appendix B ... 18ForewordAppendixes A and B of this Standard are normative. This Standard was proposed by the National Development and Reform Commission of the People’s Republic of China. This Standard shall be under the jurisdiction of the National Technical Committee for Standardization of Automobiles (SAC/TC 114). Drafting organizations of this Standard. China Automotive Technology and Research Center, and Beijing Institute of Space Launch Technology. Main drafters of this Standard. Guo Yong, Chen Song, Qiao Shenghua, Fu Yiping, Yang Junheng, and Wang Jifeng. Filling device of natural gas vehicles1 ScopeThis Standard specifies the definition, type, technical requirements, test methods, inspection rules, marks, packaging, transportation and storage of the filling device of natural gas vehicles. This Standard applies to the filling device of natural gas vehicles whose nominal operating pressure is 1.6MPa (all the pressure values described in this Standard refer to gage pressure), and whose working medium meets the requirements specified in the GB/T 19204.2 Normative referencesThe provisions in the following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest versions apply to this Standard. GB/T 191 Packaging – Pictorial marking for handling of goods GB/T 1220 Stainless steel bars GB/T 3864 Industrial nitrogen GB/T 4240 Stainless steel wires GB/T 4423 Copper and copper-alloy cold-drawn rod and bar GB/T 9969 General principles for preparation of instructions for use of industrial products GB/T 10125 Corrosion tests in artificial atmospheres – Salt spray tests GB/T 19204 General characteristics of liquefied natural gas GB/T 20734 Mounting requirements for liquefied natural gas vehicle special equipment CB/T 3764 Thickness series and quality requirements for metallic and 5.2.8 Corrosion resistance 5.2.8.1 USE a 25× magnifier to inspect the components after conducting the corrosion resistance test according to the test methods specified in the Clause 6.10.1. There shall be no cracks on the components. 5.2.8.2 INSPECT the gas tightness of the filling devices after conducting the salt spray test according to the test methods specified in the Clause 6.10.2. The gas tightness shall meet the requirements specified in the Clause 5.2.2. 5.2.9 Vibration resistance 5.2.9.1 After the vibration resistance test is conducted to the filling devices according to the test methods specified in the Clause 6.11, the fasteners shall not be loose, and shall still be able to be turned on or off in the normal way. 5.2.9.2 The test shall be respectively conducted to the filling devices according to the test methods specified in the Clauses 6.4.1.1 and 6.4.2.1. The test results shall meet the requirements specified in the Clause 5.2.2.6 Test methods6.1 Test conditions and instrument precision 6.1.1 Test conditions Unless otherwise specified, the conditions of test environment and the test medium shall meet the following requirements. a) The temperature shall be within the range of 15°C to 35°C; b) The relative humidity shall not be greater than 85%; c) The atmospheric pressure shall be within the range of 86kPa to 106kPa; d) The qualified liquid nitrogen and dry air conforming to the provisions specified in the GB/T 3864 shall be used as test medium. 6.1.2 Precision and range of test instruments Unless otherwise specified, the precision and range of instruments shall meet the following provisions. a) Electrotechnical instruments. The precision shall not be lower than Level 1.0, and the range shall be 1.5 ~ 3 times the measured value; b) Pressure instruments. The precision shall not be lower than Level 1.5, and PLACE the test pieces in room temperature. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.8MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.4.1.2 Gas leakage test at high temperature PLACE the test pieces in the environment at 82°C. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.8MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.4.1.3 Gas leakage test at low temperature PLACE the test pieces in the environment at -40°C. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.8MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.4.2 Gas leakage test for reclaiming receptacles 6.4.2.1 Gas leakage test at room temperature PLACE the test pieces in room temperature. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.6MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.4.2.2 Gas leakage test at high temperature PLACE the test pieces in the environment at 82°C. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.6MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.4.2.3 Gas leakage test at low temperature PLACE the test pieces in the environment at -40°C. VENTILATE compressed air from the outlet end. Respectively HOLD the pressure at the locations where the pipeline pressure is 1.6MPa and 0.05MPa for 3min. CONDUCT the test afterwards. 6.5 Low-temperature leakage test 6.5.1 Low-temperature leakage test for filling receptacles VENTILATE liquid nitrogen into the test pieces for precooling. IMMERSE the SEPARATE the filling device from the reclaiming receptacle after the pressure comes up to 1.6MPa. The one-way valve shall close automatically, so as to keep the pressure in the reclaiming receptacle for no less than 2s. OPEN the outlet end afterwards to release the pressure to 0MPa. Repeatedly OPEN and CLOSE the one-way valve. The cycle frequency for opening and closing shall not be more than 5 times/min. The total number of cycle test shall be 1,000. OBSERVE the sealing condition whenever 200 cycle tests have been conducted. CONDUCT the gas leakage test at room temperature according to the provisions specified in the Clause 6.4.2.1. CONTINUE to conduct the test if there is no leakage. 6.7.2 Full-flow impact test The starting air supply pressure shall be 1.8MPa at the inlet of the filling receptacle. There are no restrictions on the outlet flow. The duration for each impact shall not be less than 2s. The air supply pressure shall not be lower than 1.3MPa at the end of the impact. RELEASE the pressure at the inlet afterwards to close the one-way valve. CONTINUE to conduct 30 impact tests. The starting air supply pressure shall be 1.8MPa at the inlet of the reclaiming receptacle. There are no restrictions on the outlet flow. The duration for each impact shall not be less than 2s. The air supply pressure shall not be lower than 1.3MPa at the end of the impact. RELEASE the pressure at the inlet afterwards to close the one-way valve. CONTINUE to conduct 30 impact tests. 6.8 Oxygen aging resistance test PLACE the non-metallic components of filling devices in contact with the natural gas in the oxygen at (70 ± 2) °C with the pressure of 2.0MPa for 96h. 6.9 Compatibility test IMMERSE the non-metallic test pieces of filling devices in contact with the natural gas in the natural gas at (23 ± 2) °C with the pressure of 1.8MPa for 70h. Rapidly REDUCE the pressure to 0 afterwards. 6.10 Corrosion resistance test 6.10.1 PUT the brass component maintaining maximum operating stress (generated by mechanical assembly and 1.6MPa atmospheric pressure) and without any greasy dirt on its surface into a 30L sealed test vessel containing 0.6L of aque... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 25986-2010 be delivered?Answer: The full copy PDF of English version of GB/T 25986-2010 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 25986-2010_English with my colleagues?Answer: Yes. 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