What are the hazards of shielding the failure of the Reitz fan?
Often due to some reasons on the site (insufficient spare parts, lack of spare parts), some faults of the Reitz fan are shielded, which is very dangerous, and some faults can even cause the fan to collapse, resulting in extremely bad consequences.
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Often due to some reasons on the site (insufficient spare parts, lack of spare parts), some faults of the Reitz fan are shielded, which is very dangerous, and some faults can even cause the fan to collapse, resulting in extremely bad consequences. Dongguan Ruitian Electromechanical "target=_blank> electromechanical technology found that the phenomenon of shielding failures found in the site but not completely included is as follows:
1. Reitz fan vibration, overspeed problem Fan vibration and overspeed problems appear in every wind field, but the number is a problem. The general treatment method is to relax the set limit, and even more completely shield it. When a problem occurs, the fan cannot be monitored, and the end result is that the Reitz fan collapses.
2. Due to problems with the Ritz fan slip ring encoder, it needs to be replaced. However, due to insufficient spare parts, the field personnel will short-circuit the impeller's overspeed feedback equipment. The impeller overspeed is a part of the fan safety chain. It is the last guarantee of the wind turbine to protect the unit. It is also very important. The result of this fault being shielded is that if the wind turbine has an overspeed phenomenon, the unit will not disconnect the safety chain due to overspeed, and the fan will not stop, which will cause the wind turbine to fly and destroy the unit.
3. There is a problem with the hardware wiring before the Reitz fan is shipped from the factory or after maintenance. For example, in the hub, each blade is equipped with a limit switch, which is connected with three pitch control cabinets through the Harting joint. This switch is a link of the safety chain and is an important guarantee for the safety of the fan. However, due to the incorrect wiring of the Harting connector at the time of shipment, the site cannot be used. Therefore, the field personnel short-circuit the feedback signal of the switch to keep the fan running. However, if there is a problem with the fan software system, it may cause blade pitch error. If there is no such limit switch, it will lead to serious consequences such as flying.
In addition, in addition to the above problems, there are short-circuiting of carbon brush signals, lightning feedback shielding, temperature sensor shielding and many other issues affecting the safety of the Reitz fan. These problems require detailed research and troubleshooting of each type of machine to ensure the safety of the Reitz fan. run.
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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