Connecting structure of blade root baffle and blade root
A technology of connection structure and epoxy structural adhesive, which is applied in the assembly of wind turbines, wind power generation, engine components, etc. It can solve problems such as bolt breakage, uneven force on components, and small fit gaps, so as to improve safety and reliability. sexual effect
Pending Publication Date: 2018-10-09
SINOMATECH WIND POWER BLADE
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Problems solved by technology
In addition, for the maintenance safety of the blade during the static maintenance process, the blade root baffle needs to bear the corresponding external force load, so it is necessary to ensure that the baffle is safe and reliable during the maintenance process, and will not crack and damage, resulting in safety accidents
[0003] At present, the blade root baffle and the blade root are connected by hand-laid glass fiber cloth, which is equivalent to the rigid connection between the blade root and the blade root baffle, which will cause the deformation of the blade root pitch circle when the blade rotates It is directly transmitted to the blade root baffle, causing the following problems: (1) The blade root baffle is connected by bolts on the flange side and combined into a whole. The stress concentration point pulls the flange edge, causing the baffle to crack; (2) The molded manhole cover is embedded in the blade root baffle, and the fit gap is small, or even tight fit. The molded manhole cover passes through 4 identical The standard bolts are connected with the baffle, and the bolts are fully threaded. The bolt connection between the baffle and the manhole cover has been strengthened, and the bolts are stress concentration points.
When the blade root is deformed, the bolt is sheared, which may easily cause the bolt to break
Method used
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[0016] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the thickness of regions and layers are exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0017] The blade root and the blade root baffle are connected by a support block, the support block and the blade root baffle are connected by an elastic element, and the gap between the blade root and the blade root baffle is filled with an elastic element (high elastic or super elastic adhesive) . During the operation of the fan, when the bla...
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The invention provides a connecting structure of a blade root baffle and a blade root and. The blade root and the blade root baffle are connected through a supporting block, the supporting block is connected with the blade root baffle through an elastic element, and the elastic element is filled with the gap between the blade root and the blade root baffle. According to the structure, the elasticelement can absorb energy during the blade root deformation, the extrusion effect of the blade root deformation on the blade root baffle is weakened or eliminated, so that the stress level of connecting the baffle, a manhole cover plate and a baffle cover plate with a connecting bolt is reduced, and the safety and reliability of the baffle in the running process of a fan are improved.
Description
technical field [0001] The invention belongs to the field of wind power blades, and in particular relates to a connection structure between a blade root baffle and a blade root for a wind power blade. Background technique [0002] In order to prevent the remaining items in the blades from falling onto the hub during the operation of the fan, causing damage to the hub and affecting the normal operation of the fan, a blade root baffle is installed at the blade root to separate the blade cavity from the hub. open. In addition, for the maintenance safety of the blade during the static maintenance process, the blade root baffle needs to bear the corresponding external force load, so it is necessary to ensure that the baffle is safe and reliable during the maintenance process, and will not crack and damage, resulting in safety accidents. [0003] At present, the blade root baffle and the blade root are connected by hand-laid glass fiber cloth, which is equivalent to the rigid con...
Claims
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IPC IPC(8): F03D13/10
CPCF05B2240/30Y02E10/72
Inventor 陈淳杨苗苑方致阳李成良赵立岩戴国辉
Owner SINOMATECH WIND POWER BLADE