A sealing method for a wind power blade root connection system
A connection system and a technology for wind power blades, which are applied in the field of sealing of the root connection system of wind power blades, can solve problems such as poor bonding and damage to the sealing of the root connection system, and achieve the effect of ensuring the level of corrosive environment and avoiding mutual influence.
Active Publication Date: 2020-11-24
江苏双瑞风电叶片有限公司
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- Application Information
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Problems solved by technology
Since most of the root connection system is protected by Dacromet coating system, the surface of the bolt is smooth, so the combination with the sealing silica gel is poor. Gaps are prone to exist, resulting in damage to the overall tightness of the root connection system
Method used
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Embodiment Construction
[0028] Specific implementation modes (embodiments) of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention.
[0029] A method for sealing a wind power blade root connection system, specifically comprising the following steps:
[0030] 1) The semi-finished blade shell 1 is manufactured by adopting the vacuum infusion molding process and the adhesive bonding process;
[0031] 2) Carry out root cutting and milling of the semi-finished blade shell 1 according to the pre-designed cutting angle;
[0032] 3) Use a high-precision drilling machine to drill connecting bolt holes 2 and nut holes 3 on the blade shell;
[0033] 4) Install the nut 5 in the root connection system in the blade nut hole 3 by using the process positioning bolt 4;
[0034] 5) Apply a ring of sealing adhesive 6 at the junction of the nut 5 and the inner wall of the nut hole 3, and the sealing adh...
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The invention discloses a sealing method for a wind power blade root connecting system. A nut and a bolt are divided into independent spaces by adopting a sealing adhesive and a rectangular rubber sealing washer, a composite material prefabricated belt coated with a polyurethane coating is adhered to the exterior of a nut hole through the sealing adhesive, it is guaranteed that the composite material prefabricated belt fully makes contact with the rectangular rubber sealing washer by adjusting the height of the sealing adhesive, therefore, each nut and each bolt form the separated sealing spaces, and influences among different areas are avoided. The sealing method for the wind power blade root connecting system has the beneficial effect that the problems that in a conventional sealing method, the blade root connecting system is overall corroded due to the fact that the local sealing property is damaged, tiny cracks of the blade root connecting system can not be easily found, the sealing property of the blade root connecting system can not be remedied after being damaged, and the sealing property of the bolt area fails due to the fact that the bonding force between sealing silica gel and a Dacromet coating is insufficient are solved.
Description
technical field [0001] The invention belongs to the technical field of sealing the root connection system of wind power generation blades, and in particular relates to a sealing method for the root connection system of wind power generation blades. Background technique [0002] Using "T" type nut and bolt connection to connect wind turbine blades with wind turbine hub is a main connection method of wind turbines. In this connection scheme, the blade nuts and bolts will be exposed, and long-term exposure to moisture, rain, oil, etc. will cause the root connection system to be easily corroded, so the root connection system needs to be sealed. At present, the common nut hole sealing solution is to use adhesive and composite material sealing tape (or soft rubber tape, silicone protective tape, etc.) for sealing. During the actual storage, transfer and operation of the blades sealed with the above scheme, the adhesive will crack due to factors such as external force impact, inco...
Claims
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IPC IPC(8): B29C65/48
CPCB29C65/4805
Inventor 王伟赵金国景博玉张志杰任令响李培慈任锋
Owner 江苏双瑞风电叶片有限公司