Tidal current energy power generation device and underwater sealing protective device thereof

Abstract

The invention provides a tidal current energy power generation device and an underwater sealing protective device thereof. The underwater sealing protective device of a tidal current energy power generation unit is used for protecting the power generation unit located in water. The underwater sealing protective device of the tidal current energy power generation unit at least comprises an air pump and at least one pressurization pipe. One end of the pressurization pipe communicates with the air pump, and the other end of the pressurization pump communicates with the power generation unit. The air pump is used for pressurizing the power generation unit independently so that the pressure in the power generation unit can be controlled to be higher than or equal to the outside pressure, accordingly water flow in the outside can be prevented from entering the power generation unit, and the sealing performance of the power generation unit is guaranteed.

Description

technical field [0001] The invention relates to a power generation device, in particular to a tidal current energy power generation device and its underwater sealing protection device. Background technique [0002] Ocean energy (including tidal energy, tidal current energy, wave energy, and ocean current energy) refers to the energy of seawater flow. As a renewable energy source, it has abundant reserves and wide distribution, and has excellent development prospects and value. The main way to use ocean energy is to generate electricity. Its working principle is similar to that of wind power generation, that is, the mechanical energy of seawater is converted into electrical energy through an energy conversion device. Specifically, first seawater hits the water turbine, and the water turbine converts the energy of the water flow into rotating mechanical energy, and then the water turbine drives the generator to generate electricity through the mechanical transmission system, a...

AI Technical Summary

Problems solved by technology

If the connection is very tight and the friction force is too large, it will be difficult to adjust the angle of the blade's facing water surface, resulting in the adjustment device not being able to perform the adjustment function

The power generation device in this case cannot improve efficiency when the water flow is too small, and cannot really protect the generator when the water flow is too large

If the connection is too loose and the friction force is too small, although it can be adjusted easily, there will be a serious problem of loss of sealing

In this way, the water flow will pour into the impeller and cause the entire impeller to be damaged, the maintenance rate will be greatly increased, and the cost will be greatly increased.

Moreover, if a turbine has several blades, several rotating mechanisms and control mechanisms must be installed correspondingly, and its cost and technical difficulty increase sharply.

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