Low-pressure sealing system applied to sectional form mould core/mould and sealing method thereof

Abstract

The invention relates to a low-pressure sealing system applied to a mould core / mould and a sealing method thereof, in particular to a low-pressure sealing system applied to a sectional form mould core / mould and a sealing method thereof. The low-pressure sealing system consists of two parts of an inner-layer sealing system (1) and an outer-layer low-pressure sealing system, wherein the outer-layerlow-pressure sealing system comprises an air guiding system (2), a large sealed space (4), an air pressure measuring system (5), a sealing rubber ring (3) and a suction system, and the air guiding system (2) comprises at least one air guiding channel; the large sealed space (4) comprises at least one sealed container; the air pressure measuring system (5) comprises at least one vacuum gauge or barometer; the sealing rubber ring (3) insulates the air guiding groove from the outside atmospheric pressure and is deformed to be tightly close to the wall of the air guiding groove by difference of pressures inside and outside the sealed rubber ring (3) so as to realize the sealing function; and the suction system (6) comprises a vacuum pump, a suction pipeline and a regulating valve. The low-pressure sealing system and the sealing method disclosed by the invention can be applied to sealing connection parts of a large wind turbine blade mould core / mould (7) and ensure that the connection parts of a mould core / mould device are airtight in a vacuum-casting process of mould / blade manufacture so that the quality of casting is ensured; meanwhile, the low-pressure sealing system disclosed by the invention is easy to monitor in the using process and convenient to maintain.

Description

technical field [0001] The invention relates to a low-pressure sealing system and a sealing method applied to a segmented mold core or a mold, in particular to a sealing system and a sealing method for a joint of a segmented mold core or a mold of a wind power blade. Background technique [0002] A wind turbine is a power machine that converts wind energy into mechanical energy. The wind turbine uses the wind to drive the blades to rotate, and then increases the speed of rotation through a speed increaser to promote the engine to generate electricity. [0003] Although my country's wind power industry started late, it has developed rapidly. In recent years, the installed capacity has doubled, and the models have also been upgraded from the original 850kW to 1.5MW, 2.0MW, 3.0MW and other large units. The length has also increased from more than 20 meters to more than 60 meters now. [0004] At present, wind power blades are mainly formed by vacuum suction injection process, w...

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Problems solved by technology

In addition, as the size of the blade increases, the size of the mold becomes larger. For the convenience of transportation, the mold is also manufactured in sections, which also involves the problem of sealing the connection. Moreover, the mold needs to be turned over during use. Airtightness is difficult to maintain, and it is difficult to find air leaks, cannot be monitored, and is not easy to maintain

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