Inflatable blade structure of wind driven generator

Abstract

The invention relates to the technical field of wind turbine blades, in particular to an inflatable blade structure of a wind driven generator. The inflatable blade structure comprises a glass fiber blade root segment and an inflatable blade tip segment, wherein a plurality of clamping buckles are pre-buried at the edge of the end connected between the glass fiber blade root segment and the inflatable blade tip segment, a plurality of buckling holes are formed in the edge of the end connected between the glass fiber blade root segment and the inflatable blade tip segment, and the glass fiber blade root segment and the inflatable blade tip segment are connected through the clamping buckles and the buckle hole, and then are fixedly connected through rivets; the inflatable blade tip segment comprises an outline supporting structure, an inflatable main bearing component and an outer skin; and the inflatable main bearing component and the outline supporting structure are arranged inside theouter skin, the two ends of the outline supporting structure are respectively provided with a leading edge segmented foam and a tailing edge flexible tail fin, and the outer surface of the outer skinis coated with a coating. According to the inflatable blade structure of the wind driven generator, the weight of inflatable blades can be reduced to a maximum extent, the volume and the size in thetransportation process are greatly reduced, so that the transportation cost is reduced, the environmental protection performance is improved, and meanwhile, the fatigue service life of the blades is prolonged.

Description

technical field [0001] The invention relates to the technical field of blades of wind power generators, in particular to an inflatable blade structure of wind power generators. Background technique [0002] Wind turbine blades are the most basic and critical components of wind turbines. Their good design, reliable quality and superior performance are the decisive factors to ensure the normal and stable operation of the unit. In the existing technology, the wind turbine blades also generally have transportation and weight loss problems. For example, the existing wind turbine blades are mainly made of glass fiber and resin, which are divided into upper and lower pieces and vacuum infused as a whole, and then the two are molded and bonded. It is a rigid structure, the overall size cannot be reduced, and because the blades have pre-bending characteristics, the overall height during transportation is high, so when passing bridges, tunnels, height-limited barriers, small curves an...

AI Technical Summary

Problems solved by technology

In the existing technology, the wind turbine blades also generally have transportation and weight loss problems. For example, the existing wind turbine blades are mainly made of glass fiber and resin, which are divided into upper and lower pieces and vacuum infused as a whole, and then the two are molded and bonded. It is a rigid structure, the overall size cannot be reduced, and because the blades have pre-bending characteristics, the overall height during transportation is high, so when passing bridges, tunnels, height-limited barriers, small curves and other road conditions, the length and size exceed the standard and are strictly restricted

In addition, in the prior art, in order to alleviate the transportation problem of wind turbine blades, the blades are usually divided into two parts. At present, there are mainly two technologies used to connect these two parts of blades, one is adhesive connection, and the other is mechanical connection. Part of the joints of the blades are made of rigid-flexible materials, and the rate of strain change is not coordinated with the change of temperature difference. The risk of cracking during the 20-year service life of the blades is greater if only adhesive connections or mechanical connections are used. At the same time, on-site bonding needs to be established at the installation site. Controllable humidity and temperature and other necessary conditions, because the environment of the project site is mostly quite harsh, which makes it difficult to complete the project site

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