GB/T 19568-2017 in English
SUPERSEDEDWind turbines—Assembling and installation regulation
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
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《GB/T 19568-2017风力发电机组 装配和安装规范》由TC50（全国风力发电标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
In-depth interpretation of GB/T 19568—2017 Wind turbine assembly and installation specification
| Standard requirements | Specific provisions | Technical points |
|---|---|---|
| Bolt connection | Torque method and tension method, torque allowable deviation ±5% | Use anti-seizure lubricant and thread locking agent, tighten in three times. |
| Bearing assembly | Hot-fitting process, control the clearance change Δμ | The negative clearance requirements of tapered roller bearings and cylindrical roller bearings are ≤0.05mm and ≤0.1mm. |
| Hydraulic and lubrication systems | The bending radius of the hose is ≥9 times the outer diameter, and the length of the straight pipe section at the joint is ≥6 times the outer diameter | The oil filling amount and medium selection must meet the process requirements to ensure that no air is mixed. |
Implementation suggestions and actual cases
Requirements for key component assembly:
- Electromagnetic induction heaters shall be used for main shaft bearing assembly, and the temperature shall be controlled below 120℃.
- Check the gearbox elastic support for cracks and damage before assembly to ensure installation at the same height.
- Calculation formula for yaw and pitch drive normal backlash: j_bn = (0.03~0.05) × m
Installation inspection and quality assurance:
- The torque method is used to inspect the tightness of bolt connections, with a sampling rate of 10%. When the unqualified rate is 20%, 100% of the bolts shall be re-tightened.
- Electrical wiring requires good insulation of the wires, clear markings, and grounding resistance ≤4Ω.
Analysis of the background of standard formulation:
GB/T 19568-2017 replaces the old standard GB/T19568-2004. The main technical changes include:
- Expanding "screw and bolt connection" to "screw, bolt, stud connection".
- Adding assembly requirements for key components (yaw, pitch drive, brake, etc.).
- Supplementing the requirements for "wind rotor installation", "cable laying" and "electrical wiring" in wind farm installation.
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