Anti-reverse device and method for fan used in power plant
A technology of anti-reversal and fan, applied to components of pumping devices for elastic fluids, mechanical equipment, engine control, etc., can solve problems such as safety accidents, generator set outage, and system wind pressure cannot be guaranteed, and achieve Improve the safety factor, prevent unplanned outages, and save operating costs
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] like Figure 1~2 Shown: an anti-rotation device for a fan used in a power plant, including a fan, a ratchet 1, a pawl 2, a spring 3 and a slot 4, the ratchet 1 is sleeved on the fan shaft 5; one end of the ratchet 2 is fixed on the ratchet 1 , the pawl 2 can rotate around the fixed point 11, and the head 21 of the pawl 2 can extend and retract; one end of the spring 3 is connected to the head 21 of the pawl 2, and the other end of the spring 3 is connected to the ratchet 1; The card slot 4 is coaxially connected with the ratchet 1, and a plurality of notches 41 are arranged at intervals on the outer circumference of the card slot 4;
[0022] When the centrifugal force on the pawl 2 is less than the tension of the spring 3, the head 21 of the pawl 2 is thrown out of the outer circumference of the ratchet 1 and stuck into the no...
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