A liquid spring vacuum pumping and pressure maintaining device for a wind power generator

Abstract

The invention discloses a liquid spring vacuum-pumping pressure-maintaining device of a wind driven generator. The liquid spring vacuum-pumping pressure-maintaining device comprises a control valve block and an electric pump, wherein the control valve block comprises a first ball valve, an air filter and a pressure reducing valve; a pneumatic vacuum generator, a second ball valve and a third ballvalve are sequentially in series connection through pipe fittings; a first pressure meter is in pipe connection between the pressure reducing valve and the vacuum generator; a second pressure meter isin pipe connection between the third ball valve and the electric pump; a gas vacuum generator is equipped with a gas exhaust and liquid side pipeline interface; a third pressure meter is in pipe connection behind the second ball valve; at least one external pipeline is arranged between the third pressure meter and the third ball valve; a fourth ball valve is in pipe connection between the pneumatic vacuum generator and the second ball valve; and the fourth ball valve is provided with at least one external pipeline. The liquid spring vacuum-pumping pressure-maintaining device is used for the liquid composite spring vacuum-pumping technical field of a wind driven generator shock absorber, is light, has excellent vacuum-pumping efficiency and effect, and can realize that a plurality of groups of valve blocks simultaneously work.

Description

technical field [0001] The invention relates to the field of vacuuming hydraulic components of heavy machinery, in particular to a liquid spring vacuuming device for a wind power generator shock absorber. Background technique [0002] At present, the liquid composite springs used in wind turbines have a great effect on absorbing vibrations and shocks generated during the rotation of blades of wind turbines. However, there is a problem in the assembly process of the hydraulic spring. Before the hydraulic spring is assembled, the air in the sealing cavity must be drained to avoid air mixing, otherwise the air remaining in the oil will reduce the compression performance of the oil, and then Affect the shock absorption performance of the bearing seat. The traditional vacuum pumping method adopts all-mechanical vacuum pumping, which has an unsatisfactory vacuum degree, poor effect and low efficiency. When vacuuming for many times, the rubber hose needs to be removed each time t...

AI Technical Summary

Problems solved by technology

However, there is a problem in the assembly process of the hydraulic spring. Before the hydraulic spring is assembled, the air in the sealing cavity must be drained to avoid air mixing, otherwise the air remaining in the oil will reduce the compression performance of the oil, and then Affect the shock absorption performance of the bearing seat

The traditional vacuuming method adopts all-mechanical vacuuming, the degree of vacuum is not ideal, the effect is poor and the efficiency is low

When vacuuming for many times, the rubber hose needs to be removed to clean the oil inside the pipeline each time, which greatly wastes manpower and assembly time and reduces production efficiency

At the same time, traditional vacuum equipment can only vacuum a group of composite springs at one time, which also makes traditional vacuum equipment inefficient

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