The taierhchuang wind vane is analyzed. studying bearing bolt fracture

Taierhchuang wind vane is analyzed. studying 2018 - bearing bolt fracture events 10 - 03 on February 18, 2018, 4 taierhchuang wind field fan blade is analyzed. studying bearing bolt fracture incidents, exposed the devices exist significant security hidden danger, wind power grim situation of safe production as a whole. To seriously implement the group company documents, profound lessons, eliminate hidden dangers, resolutely put an end to such events happening again, and, more attention must be paid to the various units immediately organize wind turbines is analyzed. studying bearing bolt hidden perils in special management work, and ensure implementation in place, implement. Relevant requirements as follows: first, the scope of hidden mainly for the area all on change of the fan blade bearing bolt. Second, the various units to fan manufacturer contact technical department in writing as soon as possible, in this unit is analyzed. studying wind turbines bearing bolt quality files and relevant technical data in detail ( Such as fatigue strength, fatigue limit, the material and testing analysis report, material strength and strength design margin, inspection, maintenance manual or specification of product model and its certificate, etc. ) , contact maintenance units or personnel, collecting measures and related equipment maintenance records, work out schemes for screening and detection work immediately. Three, according to the fan manufacturer, vibration online testing equipment manufacturers, such as the provision of technical data, each unit should take advantage of on-line detection device of vibration related historical data and trends ( Such as: the main shaft, the time domain waveform frequency domain 0 200 hz frequency spectrum, spindle TF figure, etc. ) And effective technical means such as ultrasonic detector is analyzed. studying the bearing bolt to conduct a comprehensive inspection, and according to the proportion of 100% in accordance with the requirements of the wind turbine inspection manual tensile force or torque test ( Check the tensile force of prestressing force according to the installation commonly 90%, or perform inspection manual check torque according to the manufacturer instructions) And make a record data and images retained; Found that the problem timely contact with the relevant units, determine the processing scheme and preventive measures. Four, each unit shall require vibration on-line detection device manufacturer introducing vibration testing data ecr, open to run personnel monitoring interface, convenient operation personnel of all measured parameters monitoring and read historical trend curve. Five, the various units to seriously analyzes the lessons of this incident, to organize the formulation of this unit of hidden perils in the special administrative work plan ( Including preliminary screening situation, specific measures and main time node, a clear responsibility departments and personnel) By signing this unit in charge of the leadership after submitted before June 30, 2018 new energy company safety production department for the record in shandong branch, and submitted to the court at the same time. Six, according to the group company on technical supervision work must insist on the 'management of regression,' nature to return to 'the overall requirement of two regression, electricity will be in the second half of the year in shandong branch, research institute of the technical inspection to monitor the work about equipment management and technical supervision system operation in the specific execution and implementation.