Lubricating system for gear box of wind generating set

Abstract

The invention discloses a lubricating system for a gear box of a wind generating set. The system comprises an oil tank and the gear box, and is characterized in that: the oil tank is externally arranged independently, is provided with a circulation heating system, and is communicated with the gear box through a flexible rubber joint or a metal hose; oil pipes are arranged in the oil tank and are respectively connected with an electric pump I, an electric pump II and a mechanical pump; lubricating oil enters one-way valves I, II and III through each of the pumps, converges and enters a three-way temperature control valve after passing through filters I, II and III, and directly enters the gear box and / or enters the gear box through a panel cooler; and the panel cooler is connected in parallel with a circulating water system which consists of an air cooler I, an air cooler II, a water pump, a temperature sensor, a pressure tank, a pressure relay and a safety valve II. The system has the characteristics of high cooling effect, low vibration, improvement on heating efficiency, prolongation of lubricating service life and supply of early warning, and is suitable to be used in the lubricating system of the gear box of a large-scale fan.

Description

technical field [0001] The invention relates to a pressure lubrication system with a lubricant discharge or purification device, in particular to the lubrication, cooling and filtration of a wind power generation gearbox. Background technique [0002] At present, the lubrication system of the gearbox of the wind power generating set is scattered and installed on the gearbox in the form of multiple components, mainly composed of the motor, the gear pump, the air cooler of the filter, and the lubricating oil is directly stored in the gearbox. This form of lubrication system has always had the disadvantages of inconspicuous cooling effect, imperfect system control, low reliability of the gearbox and high maintenance frequency. In addition, with the rapid development of the wind power industry, small wind turbines will gradually be replaced by large wind turbines, and large wind turbines, such as 5 MW turbines, are mainly offshore models, and the maintenance costs are very high....

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing lubrication system, such as inconspicuous cooling effect, imperfect system control, and no gearbox failure warning, and to design an independent external oil tank, air-cooled and water-cooled secondary cooling methods and independent New type fan gearbox lubrication system for circulating heating system

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