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A kind of horizontal axis tidal current energy turbine and using method

A water turbine and tidal energy technology, applied in mechanical equipment, hydroelectric power generation, ocean energy power generation, etc., can solve the problem of not being able to exert the maximum effect, reduce the phenomenon of flow separation and energy loss, increase the pressure difference, and improve the boundary layer. separation effect

Active Publication Date: 2022-07-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, although it can indeed improve the power generation efficiency to a certain extent, the hinged connection between the main wing and the rotatable flaps restricts it to a certain extent, making it impossible to maximize the efficiency.

Method used

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  • A kind of horizontal axis tidal current energy turbine and using method
  • A kind of horizontal axis tidal current energy turbine and using method
  • A kind of horizontal axis tidal current energy turbine and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like Figure 1 to Figure 5 As shown, the present embodiment provides a horizontal-axis tidal current turbine blade 1, including a main wing 11 and a flap 12, wherein the flap 12 is arranged at the trailing edge of the main wing 11, and there is a possible space between the main wing 11 and the flap 12. Variable area permeable channels.

[0037] further, as figure 1 As shown, the main wing 11 and the flap 12 are connected by a crank connecting rod 13, wherein one end of the crank connecting rod 13 is installed at 1 / 3 chord length from the leading edge of the blade tip of the main wing 11, and the other end is installed at a distance from the flap 12 The 1 / 3 chord length of the leading edge of the blade tip; through the crank connecting rod, the flap 12 can be deflected around the trailing edge of the main wing 11 to change the radian of the blade 1 . It should be noted that the connection between the main wing 11 and the flap 12 is not limited to the crank connecting r...

Embodiment 2

[0041] like Figure 4 to Figure 5 As shown in the figure, this embodiment provides a horizontal-axis tidal current turbine, including a support structure 4 and a turbine installed at the top of the support structure 4, wherein the turbine includes a nacelle 3 connected to the support structure 4, a nacelle installed inside the nacelle 3 A generator (not shown in the figure), a hub 2 connected to the generator shaft, and a blade 1 of several embodiments mounted on the hub in a circumferential direction, wherein the main wing 11 is fixedly connected to the hub 2, and the flaps 12 are mounted on the hub 2. On the slideways arranged in the circumferential direction, the crank connecting rod 13 is connected with the driving device (not shown in the figure) arranged in the hub 2; the water turbine is directly fixed on the seabed through the supporting structure 4.

[0042]During operation, the water flow drives the blade 1 to rotate, which in turn drives the hub 2 connected to the b...

Embodiment 3

[0047] Based on the horizontal axis tidal current energy turbine provided in the second embodiment, the present embodiment provides its specific use method, which is as follows:

[0048] When the hydraulic turbine is in the normal working state, the driving device does not work, and the water flow passes through the water permeable channel between the main wing 11 and the flap 12, and the water flow at the trailing edge of the suction surface of the main wing 11 is increased by the ejection effect of the water permeable channel on the fluid. flow rate;

[0049] When the turbine blade needs to be adjusted, the driving device works, and the driving device controls the operation of the crank connecting rod 13, and drives the flap 12 to slide along the slide on the hub 2 through the crank connecting rod 13, so that the overall curvature of the blade 1 is increased.

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Abstract

The invention discloses a horizontal-axis tidal current energy turbine and a method of use, comprising blades and a support structure, wherein the blades comprise a main wing and a flap, wherein the flap is arranged at the trailing edge of the main wing, and the gap between the main wing and the flap is There is a permeable channel of variable area between the main wing and the flap; by adopting the structural design of the permeable channel between the main wing and the flap, it can use the permeable channel between the main wing and the flap to eject the water flow to increase the trailing edge of the suction surface of the main wing. At the same time, it is beneficial to reduce the flow separation phenomenon and energy loss on the blade surface, thereby improving the lift of the blade and the energy conversion efficiency of the turbine; When the water flow speed around the blade increases, by adjusting the area of ​​the permeable channel, the overall camber of the blade is increased, the stall angle of attack is increased, and the occurrence of blade stall is delayed, thereby widening the operating range of the tidal energy turbine.

Description

technical field [0001] The invention relates to the technical field of tidal current energy generation, in particular to a horizontal axis tidal current energy turbine and a method of using the same. Background technique [0002] In recent years, with the continuous increase of the global population, the consumption of traditional fossil energy such as coal, oil and natural gas has increased year by year, and the effective development and utilization of renewable energy has become the focus of research in various countries. The horizontal axis tidal current energy turbine is an important device that converts ocean current energy and tidal current energy into electrical energy. Its power generation principle is similar to that of wind power generation, but with higher energy density and stronger regularity. Because of the advantages of horizontal axis tidal current turbines, such as good controllability, low economic investment, cleanliness and no pollution, etc., they have b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/12F03B3/14F03B13/26
CPCF03B3/123F03B3/126F03B3/14F03B13/264Y02E10/30
Inventor 王文全王秀虎周平闫妍
Owner SICHUAN UNIV
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