Megawatt level composite material wind electricity blade vacuum guiding and forming technique

Abstract

The invention discloses a vacuum infusion forming process for a megawatt grade composite material wind turbine blade. The process comprises a step of spreading and cladding reinforced material layers in an upper mold cavity and a lower mold cavity of a mould of the blade respectively and a step of solidification, demoulding and product forming, and is characterized by comprises the following steps between the two steps: 1)distributing injection systems on the surfaces of the reinforced material layers; 2) distributing vacuum systems on the outer surface of the injection systems spread and covered with flow channels in the step 1); 3) checking the airtight performance of an vacuumizing opening; 4) mould filling ( filling rubber liquid); and 5), solidification, demoulding and product forming. The vacuum infusion process can complete mould filling in 1.5 hours, improves the forming efficiency of large blades, saves special equipment and achieves low production costs. Products formed by the process are uniform in quality distribution and good in process repeatability, and can reduce volatilization of harmful gases and environmental pollution and ensure heath of operators and are easy to promote and use compared with a hand lay up process and a wet spreading process.

Description

technical field [0001] The invention relates to a forming process of a composite material wind power blade, in particular to a vacuum introduction forming process of a megawatt-level composite material wind power blade. Background technique [0002] Blades are key components of wind turbines to efficiently capture wind energy. In the initial stage of wind power generation, due to the small power of the generator, the size of the required composite blades is also relatively small, and the uniformity of the mass distribution of the blades does not have a very obvious impact on the generator and the tower, so the initial small composite blades The manufacturing basically adopts the simplest and most original hand lay-up molding process that does not require expensive tooling equipment. However, the volatilization of styrene in the hand lay-up process will pollute the air environment and cause harm to the operators themselves. [0003] With the increasing power of wind turbine...

AI Technical Summary

Problems solved by technology

However, this process has low efficiency, poor quality stability, and requires special equipment such as prepreg machines, and the cost is high

Images