Segmented blade connecting device, blade of wind power generating set and control method thereof

A technology for wind turbines and connection devices, which is applied in the control of wind turbines, wind turbines, wind power generation, etc., and can solve the problems of not being able to change the total length of the blades, and the length of the entire segment blades cannot be adjusted.

Active Publication Date: 2018-11-13
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The length of the whole segmental blade cannot be adjusted, while the existing segmental blades use a "dead connection" for the connection between the blade segments. Once the fan is loaded, the blade segments are Relatively fixed, the length of the blade is fixed, so it does not have the ability to change the total length of the blade

Method used

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  • Segmented blade connecting device, blade of wind power generating set and control method thereof
  • Segmented blade connecting device, blade of wind power generating set and control method thereof
  • Segmented blade connecting device, blade of wind power generating set and control method thereof

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Embodiment Construction

[0030] The connection device for the segmented blades, the blades of the wind power generating set and the control method thereof according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Such as figure 1 with figure 2 As shown, they are respectively the structural schematic diagrams of the connecting device of the segmented blade in the embodiment of the present invention when it is in the extended state and in the contracted state. The connecting device of the segmented blade in this embodiment includes a length-adjustable connecting piece 1 and its The connected controller 16 is fixedly connected with a flange plate 2 at both ends of the connector 1, and the flange plate 2 matches the connection end face of the blade section 3, and the controller 16 is connected with the general control system of the fan (not shown in the figure). ) communication connection.

[0032] In the connection dev...

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Abstract

The invention provides a connecting device for segmental blades, a wind generating set blade and a control method of the wind generating set blade. The connecting device for the segmental blades comprises connecting pieces (1) with the adjustable length and a controller (16) connected with the connecting pieces (1). The two ends of each connecting piece (1) are fixedly connected with flange plates (2). The flange plates (2) are matched with the connecting end faces of blade segments (3). The controller (16) is in communication connection with a draught fan general control system. By the adoption of the connecting device for the segmental blades, the distance between the two blade segments connected through the connecting device can be adjusted through adjustment of the length of the connecting pieces so that the total length of the whole segment blades can be adjusted and the purpose that the noise of the blades is adjusted according to requirements can be achieved.

Description

technical field [0001] The invention relates to a connecting device and a blade, in particular to a connecting device for segmented blades, a blade of a wind power generating set and a control method thereof. Background technique [0002] The blades of wind power generators can be divided into integral blades and segmented blades, wherein the segmented blades are formed by sequentially connecting two or more blade segments. In order to capture more wind energy, the unit capacity of wind turbines is getting bigger and bigger, and the length of their blades is getting longer and longer. Since the aerodynamic noise level of the blade is proportional to the 5th power of the blade tip linear velocity, and the blade tip linear velocity is proportional to the length of the blade, therefore, when the fan speed is constant, the longer the blade, the faster the blade tip linear velocity The larger the value, the greater the noise level of the blade. At present, many domestic wind tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/00F03D7/00
CPCY02E10/72
Inventor 樊祥希贾少红李强
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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