Tidal current energy generating device fixed to water bottom

Abstract

The invention provides a tidal current energy generating device fixed to water bottom. The tidal current energy generating device comprises an outer framework, at least three inner frameworks, at least three horizontal shaft water wheel generators, at least three rotary shafts, multiple outer sleeve pipes and multiple inner sleeve pipes. The at least three inner frameworks are separably arranged in the outer framework. The at least three horizontal shaft water wheel generators are arranged into the at least three inner frameworks.At least one horizontal shaft water wheel generator is correspondingly arranged on each rotary shaft. At least one rotary shaft is correspondingly installed on each inner framework. At least three driving units are connected with the rotary shafts in order to drive the rotary shafts to rotate. The multiple outer sleeve pipes are fixed onto the outer framework. A part of each inner sleeve pipe is connected to the bottom end and the water bottom of a corresponding outer sleeve pipe.

Description

technical field [0001] The invention belongs to the field of ocean energy power generation, in particular to a tidal current energy power generation device fixed on the bottom of the water. Background technique [0002] There are two fixing methods for the tidal current energy generation device. One is to fix and suspend in the water through structures such as steel cables and buoys, and the other is to fix to the bottom of the water by piling. Since the two fixing methods are to fix the generating device at different positions in the water, the construction methods are completely different, and the structures of the corresponding tidal current energy generating devices are also quite different. [0003] The existing construction method for fixing the tidal current energy generating device on the bottom of the water is mainly to fix it by blasting and ramming the prefabricated concrete piles at the bottom of the water by construction workers. However, in order to ensure the...

AI Technical Summary

Problems solved by technology

However, the maintenance and replacement of traditional tidal current power generation devices are also carried out in the sea, which is difficult and costly

Even, the entire tidal current energy generation device is scrapped due to the damage of some components. This is one of the important reasons for the high cost of the tidal current energy generation device, and it is also the direct reason why the existing tidal current energy generation device cannot be operated on a large scale and commercially. reason

[0006] Horizontal axis hydro-generators in particular are more difficult and costly to repair since all their equipment, including the impeller and generator, is submerged

Therefore, even though the power generation efficiency of the horizontal-axis hydro-generator is higher than that of the vertical-axis hydro-generator, the horizontal-axis hydro-generator still cannot be commercialized

However, at present, technicians in the field of ocean energy generation have ignored the improvement of maintenance methods

[0007] In addition, traditional tidal current power generation devices generally only use one or at most two hydroelectric generators

However, only one or two hydroelectric generators are used. In order to increase the power generation, the diameter of the impeller usually needs to be made very large, which will greatly reduce the speed of the impeller and increase the torque at the same time, resulting in friction between the central shaft and the gearbox. Larger, higher cost of center shaft and gearbox

In addition, the scale of the entire power generation device will be limited, and the cost of the power generation device will remain high, which restricts the development of tidal current power generation devices

[0008] However, at present, technicians in the field of ocean energy power generation have technical prejudices, and only focus on the research and development of how to enlarge the impeller part of the hydro-generator or improve the structure of the impeller blades to increase the power generation of a single hydro-generator

At present, no one in this field has studied how to increase the power generation and reduce the cost to be suitable for commercial use without changing the impeller.

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