风电机组用高强度螺栓连接质量管理

Quality Management of High-Strength Bolt Connection for Wind Turbine

[目的]提高高强度螺栓连接风电机组的安全性、可靠性。[方法]从高强度螺栓连接副出发,对高强度螺栓生产制造、进场验收、运输与储存、安装施工及施工质量验收等方面加强管理,提出螺栓从生产制造到施工验收过程的质量管理要求。[结果]出厂时对螺栓表面缺陷进行检验,达不到标准的要拒收;进场时对螺栓扭矩系数、机械性能、螺母保证载荷等参数进行抽样复检,确保螺栓符合要求;施工完毕后,对每一个螺栓连接副是否进行初紧与终紧进行检查,确保连接质量达标。[结论]对螺栓连接副制造、运输储存、进场验收、安装施工及施工质量验收等方面加强管理,提高螺栓质量,降低风机事故率。

[Purposes]To improve the safety and reliability of high-strength bolt connection for wind turbine generators.[Methods]Starting with high-strength bolt connection pairs,the quality management requirements for the bolt rectification process are introduced from the aspects of high-strength bolt production and manufacturing,mobilization acceptance,transportation and storage,installation construction,and construction quality acceptance.[Findings]Quality acceptance should be strengthened,and bolt surface defects should be inspected before leaving the factory.If they fail to meet the standards,they should be rejected;When accepting conducts,sampling and re-inspection on parameters such as bolt torque coefficient,mechanical performance,and guaranteed load of nuts are necessary to ensure that the bolts meet the requirements;After the completion of bolt construction,check whether each bolt connection pair has undergone initial and final tightening to ensure that the connection quality meets the standard.[Conclusions]It is recommended to strengthen management from the aspects of bolt connection pair manufacturing,transportation and storage,site acceptance,installation and construction quality acceptance,comprehensively improve bolt quality in various aspects,and reduce the accident rate of wind turbines.