A hub cooling system

Abstract

The invention discloses a dust isolation exhaust device. The dust isolation exhaust device comprises an exhaust mechanism and a dust isolation mechanism. The dust isolation mechanism comprises a fixed part, a movable part and an electric drive part. The fixed part is provided with an opening corresponding to the movable part, the movable part opens or closes the opening of the fixed part under drive of the electric drive part, and the opening of the fixed part serves as the air outlet of the exhaust mechanism. The invention further provides a hub cooling system comprising the dust isolation exhaust device. The dust isolation exhaust device is arranged in front of a hub of the hub cooling system, a special hub cover ventilation mechanism is adopted, a partition plate is arranged between the front end of the hub and a hub cover, an independent space isolating cold air from hot air is formed, and therefore heat in the hub can be rapidly dissipated to the atmosphere more easily; influence of rainwater, dust and the wind direction are fully considered, and therefore the hub cooling system has high practical value in heat dissipation of the hub of a large wind generator and effectively achieves badly-needed heat dissipation of the interior of a high-power wind generator set.

Description

technical field [0001] The invention relates to the technical field of improvement of wind power generating set equipment, in particular to a dust-proof and air-exhausting device and a hub cooling system including the device. Background technique [0002] Since most of the electrical components of the wind rotor in the wind turbine are located in the hub, and due to the special structure of the wind rotor, the heat generated by these electrical components is not easy to dissipate, which will eventually affect the normal operation of these electrical components and further affect the pitch system of the wind turbine. . In view of the above problems, most of the methods are to increase the ventilation inside the hub by arranging air inlets and outlets around the hub, so as to achieve the cooling effect inside the hub. For example, the utility model patent (application number 201120321785.4) discloses that an air inlet and an air outlet are arranged at the front end of the whe...

AI Technical Summary

Problems solved by technology

For example, the utility model patent (application number 201120321785.4) discloses that an air inlet and an air outlet are arranged at the front end of the wheel hub at the same time, and cold air is introduced through the air inlet and then discharged through the air outlet to achieve a certain cooling effect, but the air inlet and air outlet of this technical solution Isolation is not complete, can not achieve a good cooling effect

The invention patent (Application No. 201210548207.3) discloses the technical scheme of sucking the hot air in the hub into the cabin and sucking the cold air in the cabin into the hub. Fan groups are installed at the front and rear of the hub to achieve the purpose of air exchange. Occupies a large space, is inconvenient to maintain and the heat dissipation effect is not ideal

[0003] It can be seen that the above-mentioned existing hub cooling technology not only cannot achieve a better heat dissipation effect but also takes up too much space. Obviously, there are still inconveniences and defects in structure, method and use.

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