Permanent magnet driving type full-sealing seabed electricity taking device

Abstract

The invention relates to a permanent magnet driving type full-sealing seabed electricity taking device. The magnetism-stress coupling technology is adopted in the full-sealing seabed electricity taking device, a seawater washing paddle (1) drives a driving magnetic disc (5) to rotate through a power drive rotary shaft (2), a driven magnetic disc (6) synchronously rotates along with the driving magnetic disc (5) due to the magnetism-stress coupling effect, and therefore a generator rotary shaft is driven to rotate. Non-contact power transmission is achieved through magnetism-stress coupling, the energy conversion rate is high, generating efficiency is high, the service life is long, maintenance is easy and convenient, and subsequent maintenance cost is low. When ocean currents are large, a generator is protected through the slip frequency effect generated by the driving magnetic disc and the driven magnetic disc, namely, the magnetism-stress coupling flexible connection technology, and the generator can reliably work under the sea. The device can be widely suitable for the field of energy regeneration and the field of environment-friendly power generation.

Description

technical field [0001] The invention relates to a power generation device, in particular to a device for generating power by using ocean tidal current energy. Background technique [0002] With the rapid development of society and economy, human beings are facing serious problems such as resource scarcity, energy shortage, climate change and environmental degradation. All countries in the world today are seeking scientific ways to solve resource and environmental problems, and are moving towards an environmentally sustainable development model. Among them, the large-scale development and utilization of "marine renewable green new energy" including ocean tidal current energy has become the current research hotspots. Oceans account for more than 70% of the earth's surface area. my country is adjacent to the Northwest Pacific Ocean, has a long and tortuous coastline of more than 18,000 kilometers, and has about 3 million square kilometers of sea areas under national jurisdicti...

AI Technical Summary

Problems solved by technology

As far as the current technology of using ocean tidal currents to generate electricity is concerned, the main problem is that the blades are directly connected to the shaft of the generator. Under the washing of seawater, the rotation of the blades drives the generator to generate electricity. The disadvantage of this method is that when When the ocean current is large, the blades rotate too fast, which drives the engine rotor to rotate too fast, causing the generator coil to overheat, mechanical damage, overcurrent and overvoltage, etc.

[0004] Furthermore, in the prior art submarine power-taking equipment, when the ocean current is large, the rotational speed of the generator shaft also increases. When the rotational speed is greater than the limit rotational speed, it is easy to damage the generator

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