Horizontal axis ocean current energy generator variable pitch device and horizontal axis ocean current energy generator

Abstract

The invention discloses a horizontal axis ocean current energy electric generator variable-pitch device and a horizontal axis ocean current energy electric generator. The variable-pitch device comprises a driving part which is a motor or a hydraulic motor, a screw rod which is fixedly connected with an output shaft of the driving part through a coupler and a push plate which is arranged on the screw rod in a sleeving mode and is in threaded connection with the screw rod. The left end of the screw rod is supported through a pair of centripetal thrust bearings. The right end of the screw rod extends into the left end of a central hole of a spindle flange and a spindle. A first sliding bearing is formed between the screw rod and the left end of the central hole of the spindle flange and the spindle. Electric slip rings or a hydraulic slip ring are / is mounted at the right end of the spindle. One gear rack is fixed to each side surface of the push plate, each gear rack is engaged with a gear wheel, all the gear wheels are fixedly connected with the roots of corresponding blades through variable-pitch flanges, and second sliding bearings are formed between the variable-pitch flanges and the wheel hub wall. An angle transducer is installed at the left end of the driving part. By means of the horizontal axis ocean current energy electric generator variable-pitch device and the horizontal axis ocean current energy electric generator, the variable-pitch angle larger than 180 degrees can be achieved, therefore, double-way electricity generation is achieved, unified pitch variation can be achieved, and operation is stable.

Description

technical field [0001] The invention belongs to the field of ocean current energy power generation, and specifically relates to a horizontal axis ocean current energy generator pitch changing device and a horizontal axis ocean current energy generator including the pitch changing device. The pitch changing device is suitable for high-power horizontal axis ocean current energy generators. dynamo. Background technique [0002] Energy shortage is a common problem faced by all countries in the world today, and the development of renewable energy is urgent. In the field of renewable energy, ocean current energy is a kind of clean and renewable energy. my country has abundant ocean current energy reserves, and its development and utilization potential is huge. Ocean current energy has the advantages of high energy density and strong predictability. The horizontal axis ocean current energy generator is a device that converts ocean current energy into electrical energy. Most of the...

AI Technical Summary

Problems solved by technology

1. Crank linkage mechanism: This structure is often used in the hydraulic unified pitch control device of wind power generation equipment, but this structure can only realize the pitch change action of less than 90 degrees, and is not suitable for 180 degrees or even in ocean current power generation. Larger angle of pitch; 2. Worm gear mechanism: Due to the limitation of the mechanism, only independent pitch can be performed, and unified pitch cannot be performed; 3. Bevel gear mechanism: The two tooth surfaces of this structure are non-aligned. Surface contact, the pressure and contact stress of the gear teeth are large, the structure is complex, the manufacturing cost of the bevel gear is high, and under the low-speed and high-torque working condition of the pitch control device, a relatively large axial force will be generated during the transmission process of the bevel gear. Conducive to the smooth operation of the entire sea current energy variable pitch device

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