Wind turbine blade mold with double vacuum systems and method for making wind turbine blade by wind turbine blade mold

Abstract

The invention provides a wind turbine blade mold with double vacuum systems and a method for making a wind turbine blade by the wind turbine blade mold. A first vacuum gas passage is connected to a resin collector by a pipe. A second vacuum gas passage is connected to vacuum extraction equipment by a pipe. The first vacuum gas passage and the second vacuum gas passage are connected respectively to the fixed vacuum pipes and vacuum extraction equipment. Before manufacture of the wind turbine blade mold, a pressure maintaining test is carried out. Compared with the prior art needing temporary establishment of an external vacuum system, the method provided by the invention saves a labor cost and improves product quality. The resin collector is made of a transparent material and the vacuum pipes are provided with multiple air exhaust points and are distributed at different positions of the wind turbine blade mold so that through observation of an increasing rate of a resin amount of the resin collector, it is easily determined if injecting rates at all injecting points are too fast, product process controllability is improved, collected overflowing resin can be directly recovered and recycled and a wind turbine blade manufacture cost is saved.

Description

technical field [0001] The invention relates to a mold for mechanical processing, in particular to a mold for making wind rotor blades and a method for producing wind rotor blades using the mold. Background technique [0002] Under the circumstance that traditional petrochemical energy is increasingly scarce, environmentally friendly, green and reusable energy has become the main energy situation advocated at present. Therefore, many windy areas in my country have gradually added wind power generation devices. For wind turbines, the wind rotor blades are an important part of the wind turbine. For the production of wind blades, the traditional hand lay-up process has the disadvantages of low efficiency, unstable quality of finished products, and inaccurate production. At the same time, it is highly dependent on the proficiency of personnel and environmental conditions. Therefore, manufacturers of wind rotor blades at home and abroad generally use a vacuum injection process...

AI Technical Summary

Problems solved by technology

Therefore, in the process of making a wind turbine blade every time, it is difficult to ensure the airtightness of the sealed environment formed between the glue storage tank 7, the glue injection pipe 8, the mold 1, the vacuum pipe 9, the vacuum pump 10, and the resin collector. meet certain requirements

[0006] In this method of the prior art, an external vacuum system is temporarily composed of a rubber storage tank, a resin collector and a vacuum suction pipe every time, and then connected to the mould, so the external vacuum system itself and the external vacuum system cannot be guaranteed each time. The connection between the system and the mold has sufficient airtightness, and it is necessary to do a pressure-holding test before each blade is made. This method is more cumbersome, and it increases the difficulty of operation for workers, and it is difficult to improve production efficiency.

And part of the air extraction system cannot be reused, which virtually increases the manufacturing cost of the wind rotor blades

[0007] In addition, the resin collector used in the external vacuum system in the prior art is made of metal, and it is impossible to see whether the glue in the resin collector is almost full, and it is easy to cause the product to be scrapped due to the overflow of glue in the collector.

In addition, in the prior art, because the number of resin collectors used in the entire vacuum system is small, and it is impossible to judge whether the amount of glue injected at each glue injection point is appropriate during the production process, it is impossible to effectively and timely control the glue injection speed , making the process less controllable

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