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NB/T 10213-2019: Wind turbines - Pitch slip ring
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Wind turbines - Pitch slip ring
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NB/T 10213-2019
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Basic data | Standard ID | NB/T 10213-2019 (NB/T10213-2019) | | Description (Translated English) | Wind turbines - Pitch slip ring | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | F11 | | Classification of International Standard | 27.180 | | Word Count Estimation | 14,139 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10213-2019: Wind turbines - Pitch slip ring---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.
Wind turbines-Pitch slip ring
NB
ICS 27.180
F 11
Energy Industry Standards of the People's Republic of China
Replace NB/T 31043-2012
Pitch slip ring for wind turbine
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...Ⅱ
1 Scope...1
2 Normative references...1
3 Technical requirements...1
3.1 Special technical requirements...1
3.2 General technical requirements...1
4 Test method...5
4.1 Test equipment...5
4.2 Measuring instruments...5
4.3 Electrical performance test...5
4.4 Type test...6
4.5 Life test...8
4.6 Visual inspection...8
5 Inspection rules...8
5.1 Inspection classification...8
5.2 Inspection conditions...8
5.3 Sampling...8
5.4 Factory inspection...8
5.5 Type inspection...9
6 Identification, packaging, transportation and storage...10
6.1 Identification...10
6.2 Packaging...10
6.3 Transport and storage...10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the National Energy Administration.
This standard is under the jurisdiction of the Wind Power Machinery and Equipment Subcommittee of the National Energy Industry Wind Power Standardization Technical Committee (NEA/TC1/SC5).
Drafting organizations of this standard. CSIC Haibowei (Jiangsu) Technology Development Co., Ltd., China Shipbuilding Industry Corporation 723
Research Institute, Yangzhou Haitong Electronic Technology Co., Ltd., China Shipbuilding Industry Corporation Haizhuang Wind Power Co., Ltd., Beijing Jinfeng Kechuang Wind Power Plant
Equipment Co., Ltd., Mingyang Smart Energy Group Co., Ltd., Guodian United Power Technology Co., Ltd., Envision Energy (Jiangsu) Co., Ltd.,
Shanghai Electric Wind Power Group Co., Ltd., Dongfang Electric Wind Power Co., Ltd., Zhejiang Yunda Wind Power Co., Ltd., China Aerospace Wanyuan International
(Group) Co., Ltd., Hangzhou Quansheng Electromechanical Technology Co., Ltd., Jiujiang Jingda Testing Technology Co., Ltd., Zhongneng Power (Beijing) Slip Ring
Equipment Manufacturing Co., Ltd., Schleifring Transmission Technology (Tianjin) Co., Ltd., Kitten New Energy Technology (Shanghai) Co., Ltd., State Power
Investment Group Inner Mongolia New Energy Co., Ltd.
The main drafters of this standard. Chen Jingfei, Sha Xunan, Shen Zhen, Liu Yalin, Lu Bin, Li Xuhui, Chen Sufang, Yuan Ling, Qian Zhenhua, Yu
Qing, Yang Xiongjie, Xiang Feng, Hao Xiangfei, Liu Yiqing, Bo Fusen, Li Wenguo, Shi Xiaofeng, Jiang Dawei, Fan Liang
This standard is issued for the first time.
Pitch slip ring for wind turbine
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, markings, and markings of pitch slip rings for wind turbines (hereinafter referred to as slip rings)
Packaging, transportation, storage, etc.
This standard applies to electric contact friction-type pitch slip rings for wind turbines, and other friction-type slip rings can be implemented by reference.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document;
For undated references, the latest version (including all amendments) applies to this document.
GB/T 4208 Enclosure protection grade (IP code)
GB/T 2423.1 Environmental testing of electrical and electronic products Part 2.Test method Test A. Low temperature
GB/T 2423.2 Environmental testing of electrical and electronic products Part 2.Test method Test B. High temperature
GB/T 2423.3 Environmental testing of electrical and electronic products Part 2.Test method Test Cab. Constant damp heat test
GB/T 2423.10 Environmental testing of electrical and electronic products Part 2.Test method Test Fc. Vibration (sinusoidal)
GB/T 2423.18 Environmental test Part 2.Test method Test Kb. Salt spray, alternating (sodium chloride solution)
GB/T 2423.21 Environmental testing of electrical and electronic products Part 2.Test method Test M. Low air pressure
GB/T 2828.1 Sampling inspection procedure by attributes Part 1.Batch inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 13306 signs
GB/T 13384 General technical conditions for packaging of mechanical and electrical products
3 Technical requirements
3.1 Special technical requirements
The slip ring shall meet the requirements of this standard and the provisions of the order contract (or technical agreement). The minimum technical requirements should include.
a) Environmental requirements;
b) Mechanical interface requirements;
c) Electrical interface requirements;
d) Loop definition and requirements for voltage, current and signal transmission;
e) Required encoder or sensor and its wiring definition (optional);
f) Heater requirements (optional);
g) Acceptance procedures and requirements;
h) Quality and other requirements.
3.2 General technical requirements
3.2.1 Electrical performance requirements
3.2.1.1 Contact resistance
When the slip ring is working, it is required that the slip ring track and the brush are in reliable contact, and there should be no disconnection, misalignment or other poor contact phenomena. The contact resistance value
(Excluding cables) See Table 1.
3.2.1.2 Insulation
See Table 2 for the insulation resistance value of each ring of the slip ring to the shell ground and between each ring.
3.2.1.3 Insulation dielectric strength
The power frequency withstand voltage of each ring of the slip ring to the shell ground and between each ring shall be in accordance with Table 3, and the leakage current shall not be greater than 10mA.
3.2.1.4 Current Transmission
The overload current of the power loop is not less than 2 times of the rated current, and the overload time is not less than 3s, or reaches the index specified in the technical agreement.
3.2.1.5 Signal transmission
The frame loss rate of Ethernet signal transmission is 0, and the bit error rate of bus signal transmission is ≤10-6.
3.2.2 Environmental adaptability requirements
3.2.2.1 Low temperature resistance
The low temperature resistance of the slip ring should meet the requirements of GB/T 2423.1.
The low temperature test grade of slip ring is shown in Table 4.
3.2.2.2 High temperature resistance
The high temperature resistance of the slip ring should meet the requirements of GB/T 2423.2.
The high temperature test grade of slip ring is shown in Table 5.
3.2.2.3 Humidity and heat resistance
The moisture and heat resistance of the slip ring should meet the requirements of GB/T 2423.3.
3.2.2.4 Low air pressure resistance performance
The low-pressure resistance of the slip ring should meet the requirements of GB/T 2423.21.
See Table 7 for the low air pressure test grade of slip ring.
3.2.2.5 Combination of high and low temperature, humidity, heat and low pressure
According to the requirements of 3.2.2.1~3.2.2.4, the slip ring will conduct comprehensive tests on low temperature, high temperature, damp heat, and low air pressure.
The combination of temperature and low pressure, high temperature and damp heat conditions, complete the test at one time, comprehensively investigate the environmental adaptability of the slip ring.
The comprehensive test curve of high and low temperature, humidity, heat and low air pressure is shown in Figure 1.
Figure 1 Comprehensive test curve of high and low temperature, humidity, heat and low air pressure (the points marked with ▲ are the detection points)
3.2.2.6 Protection
The enclosure protection grade is IP54 on land and IP55 on sea according to GB/T 4208.
3.2.2.7 Anti-vibration performance
The anti-vibration performance of the slip ring should meet the requirements of GB/T 2423.10.
See Table 8 for slip ring vibration test levels.
3.2.2.8 Anti-salt spray performance
The anti-salt spray performance of the slip ring should meet the requirements of the severity level 2 of GB/T 2423.18.
Slip ring salt spray test conditions are shown in Table 9.
3.2.2.9 Anti-electromagnetic interference performance
The anti-electromagnetic interference performance of the slip ring reaches the index specified in the technical agreement.
3.2.3 Lifetime requirements
The working life of the slip ring should not be less than 5×107 revolutions.
3.2.4 Appearance requirements
The slip ring has a beautiful appearance, flat, smooth surface and uniform color. The outside of the slip ring shall be provided with obvious no-stepping signs, safety signs and
Nameplate.
4 Test method
4.1 Test equipment
The test equipment mainly includes.
a) Test turntable
The test turntable of the slip ring should provide the corresponding speed for the slip ring, and the turntable should be convenient for threading test.
b) Load
The load of the slip ring meets the power requirement of the current test of the slip ring.
4.2 Measuring instruments
The measuring instrument should try to meet the actual reading needs. The measuring instrument shall meet the following requirements.
--The performance indicators of the measuring instrument should comply with the relevant national standards or the verification procedures of the metrology department, and progress within the prescribed time limit.
Conduct verification
--The accuracy of the measuring instrument should be one level higher than the accuracy required for actual testing.
4.3 Electrical performance test
4.3.1 Contact resistance detection
When the slip ring path and the brush are relatively static, use a micro-ohm meter to measure the resistance value of each loop, and subtract the resistance value of the wire to obtain the actual loop
The static contact resistance value.
Note. It is allowed to measure only static contact resistance during high and low temperature damp heat and low air pressure test.
4.3.2 Insulation test
Use the insulation resistance meter specified in Table 2 to measure the insulation resistance between the shell ground and all loops and between each loop.
The insulation meets the requirements of 3.2.1.2.
4.3.3 Insulation dielectric strength test
Choose a withstand voltage tester that meets the requirements of use to test all the loops, the shell ground, and the insulation dielectric strength between each loop, the withstand voltage and
See Table 3 for time.
The dielectric strength of the insulation shall meet the requirements of 3.2.1.3.
4.3.4 Current transmission test
The two ends of each ring of the slip ring are connected with a load and a power source, and each group of loops is energized under the condition of the slip ring rotating. Energizing current is greater than rated
Current, power-on time is not less than 10min.
The current transmission should meet the requirements of 3.2.1.4, and there should be no scorching or ignition on the dynamic and static contact surfaces of the slip ring.
Note. No rotation speed is allowed during high and low temperature damp heat and low air pressure test.
4.3.5 Signal transmission test
Bus communication. slip ring speed 10r/min, communication loop length 30m, baud rate 12Mbps, transmission 106 bytes, sending time interval 40ms.
Ethernet communication. slip ring speed 10r/min, communication protocol UDP, communication loop length 30m, frame length 1000 bytes, transmission 105 frames,
The sending time interval is 10ms.
Slip ring signal transmission shall meet the requirements of 3.2.1.5.
Note. No rotation speed is allowed during high and low temperature damp heat and low air pressure test.
4.4 Type test
4.4.1 Low temperature test
The low temperature test shall be carried out in accordance with the requirements of GB/T 2423.1 and the temperature and time specified in Table 4.
During the low temperature test, test the contact resistance, insulation, dielectric strength, current transmission and signal of the slip ring according to 4.3.1～4.3.5
transmission.
The low temperature test inspection shall meet the requirements of 3.2.1.1 ~ 3.2.1.5.
4.4.2 High temperature test
The high temperature test is carried out in accordance with the requirements of GB/T 2423.2 and the temperature and time specified in Table 5.
During the high temperature test, test the contact resistance, insulation, dielectric strength, current transmission and signal of the slip ring according to 4.3.1～4.3.5
transmission.
The high temperature test inspection shall meet the requirements of 3.2.1.1 ~ 3.2.1.5.
4.4.3 Damp heat test
The damp heat test is carried out in accordance with the requirements of GB/T 2423.4 and the temperature, humidity and cycle specified in Table 6.
During the damp heat test, according to 4.3.1～4.3.5, test the contact resistance of the slip ring,
Insulation, insulation dielectric strength and current transmission and signal transmission.
The damp heat test inspection shall meet the requirements of 3.2.1.1 to 3.2.1.5.
4.4.4 Low air pressure test
The low air pressure test is carried out in accordance with the provisions of GB/T 2423.21 and the low air pressure values specified in Table 7 of this standard.
The low-pressure test process can be carried out at the same time as the low-temperature and high-temperature tests, and the test is performed at the low-temperature and high-temperature detection points.
Note. Suitable for slip rings with altitude requirements.
4.4.5 High and low temperature damp heat and low air pressure test
The high and low temperature damp heat and low air pressure test is carried out in accordance with the test procedures in 4.4.1 to 4.4.4.The high and low temperature damp heat and low air pressure test curve is shown in Figure 1.
Check at "▲".
The high and low temperature damp heat and low air pressure test inspection shall meet the requirements of 3.2.1.1 to 3.2.1.5.
4.4.6 Protection test
The protection test shall be carried out in accordance with the provisions of GB/T 4208.
After the protection test is over, test the contact resistance, insulation, dielectric strength, current transmission and signal transmission of the slip ring according to 4.3.1～4.3.5
If the slip ring is equipped with an encoder, the performance test of the encoder should meet the requirements for use.
The protection test inspection shall meet the requirements of 3.2.1.1~3.2.1.5.
4.4.7 Vibration test
The vibration test is carried out in accordance with the provisions of GB/T 2423.10 and the vibration conditions specified in Table 8.
During and after the vibration test, test the contact resistance, insulation, dielectric strength and current transmission of the slip ring according to 4.3.1～4.3.5.
If the slip ring is equipped with an encoder, the performance test of the encoder should meet the requirements for use.
The vibration test shall meet the requirements of 3.2.1.1~3.2.1.5.
4.4.8 Salt spray test
The salt spray test is carried out in accordance with the requirements of GB/T 2423.18 and the conditions specified in Table 9.After the salt spray test, visually inspect the appearance of the slip ring.
The salt spray test shall meet the requirements of 3.2.4.If the slip ring is installed with an encoder, the appearance of the encoder is not damaged.
Note. Applicable to slip ring requirements for offshore wind turbines.
4.4.9 Electromagnetic compatibility test
The electromagnetic compatibility test is carried out in accordance with the test procedures specified in the technical agreement. Electromagnetic compatibility should meet the requirements of 3.2.2.9.
4.4.10 Type test test items
Type test test items are shown in Table 10.
4.5 Life test
In a laboratory environment, install the slip ring that has passed the test horizontally, and perform an accelerated wear test at a speed of.200r/min.
No power is supplied during the inspection.
107 per revolution, press 4.3.1 to 4.3.5 to test the contact resistance, insulation, dielectric strength, current transmission and signal transmission of the slip ring.
If the slip ring is equipped with an encoder, the performance test of the encoder should meet the requirements for use.
The life of the slip ring shall meet the requirements of 3.2.3.
The contact resistance, insulation, dielectric strength and current transmission of the slip ring meet the requirements of 3.2.1.1～3.2.1.4, and the dynamic contact resistance is ≤50m
Ω.
4.6 Visual inspection
Under normal lighting conditions, visually inspect the appearance of the slip ring. Its appearance quality should meet the requirements of 3.2.4.
5 Inspection rules
5.1 Inspection classification
The inspections specified in this standard are divided into.
a) Factory inspection;
b) Type inspection.
5.2 Inspection conditions
5.2.1 Qualifications for inspection
The inspectors for the factory inspection shall have inspection qualifications.
The testing unit for type testing should be a third-party organization with professional national testing qualifications.
5.2.2 Environmental conditions for inspection
The inspection site should meet various environmental conditions and space required for slip ring inspection.
5.2.3 Inspection equipment, instruments, meters and tools
The manufacturer shall provide the instruments, meters and test equipment required for the inspection and shall meet the following requirements.
a) The instruments, meters and test equipment (including non-standard test equipment) used for inspection shall have the effective inspection period specified by the unit of measurement.
Certificate of conformity;
b) Self-made non-standard test equipment should be certified and approved by the ordering party before being used.
5.3 Sampling
The sampling plan and the qualified quality level shall meet the requirements of the technical agreement or the requirements of GB/T 2828.1.
5.4 Factory inspection
5.4.1 Inspection items
Unless otherwise specified, each slip ring shall undergo factory inspection. The factory inspection items are shown in Table 11.
5.4.2 Qualified judgment
Submitted in batches, the eligibility criteria for batch judgments are. if the random inspection is qualified, the batch of products is qualified.
5.4.3 Re-inspection rules
When there are defects or failures during random inspections, find out the reasons and take corrective measures, and then all the batches will be re-inspected and re-inspected in accordance with the factory inspection rules
All passing parties are deemed qualified.
5.5 Type inspection
5.5.1 Inspection conditions
Under the following conditions, type test shall be carried out.
a) When trial-produce new products;
b) When changes in design, technology, and materials may affect product performance;
c) When the product is transferred to the factory;
d) When the product is discontinued for 1 year and is re-produced;
e) In batch and mass production (no less than 1 regular sampling inspection per year).
5.5.2 Inspection items
Unless otherwise specified or required, the inspection items should meet the requirements of Table 10.
5.5.3 Qualification judgment
All type inspection items meet the above-mentioned requirements and can be judged as qualified for type inspection.
5.5.4 Re-inspection rules
When a certain item is unqualified during the inspection, the inspection shall be stopped, analysis shall be carried out, the cause shall be found out, and according to the severity of the defect, whether
Carry out re-inspection, the principles of re-inspection are as follows.
a) When there is a defect that does not affect the performance of the slip ring, the inspection can be continued after repair;
b) When there is a defect that affects the performance of the slip ring but the basic function of the slip ring is not lost, take measures to correct it, and write a technical analysis report, saying
After the reasons are explained, the inspection can be performed again. If the re-inspection is still unqualified, stop this inspection;
c) If there is a defect that causes the slip ring to lose its basic function, this inspection shall be terminated.
6 Identification, packaging, transportation and storage
6.1 Identification
Each slip ring should be provided with a permanent nameplate on the surface of the slip ring. The format of the nameplate meets GB/T 13306 or specified by the manufacturer. The content of the nameplate is general.
include.
a) The name and trademark of the manufacturer;
b) Product model and name;
c) Product factory number;
d) Date of manufacture;
e) Rated voltage of power ring;
f) Rated current of power loop;
g) Number of loops;
h) Altitude.
6.2 Packaging
The packaging should meet the requirements of GB/T 13384, and generally should meet the following requirements.
a) Before the product is packed, the product should be fixed by custom-made plastic foam, sponge or other cushioning and shockproof items;
b) Each product should be wrapped in plastic bags and packed in a packaging box with a certain shock-proof ability. The packaging box should be suitable for long-distance transportation and protection.
Moisture, earthquake, rain and other requirements to ensure that the products are delivered to the designated site safely and without damage;
c) The product random documents and accessories are required to be complete and packaged together;
d) The corresponding logo should be printed on the outer surface of the packing box;
e) For slip rings with cables, take protective measures for the exposed cable terminals on both sides before packaging, use buffers to shape them, and pack them into the packaging box.
Coil the cable, put in the desiccant, seal it with a plastic bag, put other accessories in the last, and fix the outside with a cable tie after the packing box is closed.
The box body will not be deformed due to the internal cable winding;
f) The slip ring without cable, use the buffer to shape it and put it into the packing box, put in the desiccant, seal it with a plastic bag, and finally other accessories
Pack it in, after the packing box is closed, use a cable tie to fix the outside;
g) Before the equipment is transported, prepare a comparison table of the shipping box number, packing number and equipment serial number for the packaging box; the packaged complete set of equipment should be able to pass
It is transported by cars, trains, planes and ships.
6.3 Transportation and storage
During transportation and storage, collision, fall, inversion, tilt, exposure, rain and snow are not allowed, and the product should be placed in a warehouse or covered
The site should be well ventilated, kept dry, dust-proof, ventilated, clean, free of acid, alkali and other corrosive gases and corrosive chemicals.
There is no strong magnetic field.
The storage period of slip rings is five years from the date of manufacture.
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