Bilateral pouring process for wind power blade web

Abstract

The invention discloses a wind power blade web bilateral pouring technology which comprises the following steps of foundation laying, flow guide net laying, runner laying and vacuum pouring. According to the scheme, an air exhaust bag is arranged in the middle of a web, pouring runners are arranged on the two sides of the web, and the technical difficulty of 70-meter-level blade web pouring in the prior art is overcome; the web filling time is shortened, the web filling resin consumption is reduced, the web production efficiency is greatly improved, and the problem that at the present stage, 24-hour production cycle components of wind power blades are insufficient in supply is solved.

Description

technical field [0001] The invention relates to the field of wind power blade production, in particular to a double-sided pouring process for the web of a wind power blade. Background technique [0002] With the gradual exhaustion of traditional fossil energy sources such as coal, oil, and natural gas, the development and utilization of new energy sources such as wind energy and solar energy have attracted more and more attention, and have become one of the most promising projects in the energy field. Rapid development at home and abroad. Wind turbine blade web is an important part of wind turbine blades, and its production and preparation have attracted wide attention. The wind power blade includes the blade shell and the wind power blade web, the wind power blade web is supported inside the blade shell, the wind power blade web includes the suction surface bonding section bonded to the blade suction surface, and the pressure surface bonded to the blade pressure surface A...

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Problems solved by technology

[0003] At present, the vacuum infusion of wind power blade webs adopts a unilateral infusion process. A flow channel (ohmic tube or PVC angle) is arranged in the center of the web mold, and a spiral tube is used to extract air from the web flanging side. The width of the blade root area is more than 2.5m, and the resin flow area is more than 1.25m when using a single flow channel for infusion, resulting in a longer glue infusion path during the infusion process, an increase in the entire vacuum infusion time of the blade web, and an increase in the amount of vacuum infusion resin At the same time, it also caused a large number of infusion defects, especially in the high-altitude areas of Northwest China, where there is a disadvantage of low-pressure vacuum infusion, which further aggravates the existing infusion defects. At present, the supply of component webs has become a constraint factor for the forming of wind power blades, and the infusion time is longer. The amount of infusion resin is relatively high, which cannot meet the current supply of components in the 24-hour production cycle of wind turbine blades; therefore, effective methods are needed to solve the above technical problems urgently

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