Wind driven generator and method for controlling gear box lubricating and cooling system thereof

Abstract

The invention discloses a wind driven generator. A gear box lubricating and cooling system comprises a common radiator and an auxiliary radiator which are arranged on a fan gear box lubricating oil way. An axial flow fan is arranged on the outer wall of a tower and / or a wind driven generator room, and introduces low-temperature air outside into the tower and / or the wind driven generator room. According to the wind driven generator, because the auxiliary radiator is added into the gear box lubricating and cooling system, the heat exchange area of a radiator assembly is increased, and the heat exchange capability of the radiator assembly is improved; because the low-temperature high-flow air outside is introduced into the wind driven generator room in a forced mode through the axial flow fan, the environment temperature inside the wind driven generator room is controlled, the heat exchange capability of the air-cooling radiators of the lubricating and cooling system is improved, and it is guaranteed that the whole fan can generate power normally with full power.

Description

technical field [0001] The invention relates to the field of new energy and energy saving, in particular to a control method for a lubricating and cooling system of a wind power generator and a gearbox thereof. Background technique [0002] At present, when the 1.5MW fan generates power at full power, the oil temperature of the gearbox exceeds the limit value required by the main control system, which is mainly caused by the following three reasons: [0003] ) low mechanical efficiency of the gearbox [0004] The gearbox of Sinovel 1.5MW fan adopts the lubricating and cooling system of HYDAC. The lubricating and cooling system of HYDAC is designed for foreign gearboxes. The mechanical efficiency of foreign gearboxes is >97%, and its heating power is about At 50kW / h, it can meet the normal operation of foreign gearboxes. However, the domestic gearbox used in this fan is generally much lower in mechanical efficiency than foreign gearboxes due to problems such as gear proc...

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Problems solved by technology

[0008] The radiator is usually produced by HYDAC. The radiator assembly of the lubrication system is designed for the mechanical efficiency of foreign gearboxes, and the design reference ambient temperature is generally 35°C, and the limit does not exceed 40°C. Since 1.5MW The ambient temperature of the fan cabin has reached 45°C, which is far from meeting the heat exchange requirements of the gearbox

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