Introduce the working principle of the lubrication system for the high-power B3SH9-Y280-50-90 gearbox

The working principle of the lubrication system for high-power B3SH9-Y280-50-90 gearbox is similar to that of a general high-power gearbox lubrication system, mainly including the following aspects:

Oil supply mechanism: The lubrication system is supplied with oil by both electric and mechanical pumps, ensuring that the lubricating oil can be continuously and stably delivered to various lubrication parts of the gearbox. Lubricating oil is extracted from the oil tank, filtered by a filtering device, and flows towards the temperature control valve.

Filtering mechanism: The filtering device is a dual precision filter. When the temperature is below+10 ℃, due to the low viscosity of the lubricating oil, or when the pressure difference of the filter element is greater than 4 bar, the one-way valve on the filter element opens, and the lubricating oil only passes through a 50 μ coarse filtration; When the temperature is above+10 ℃ or the pressure difference of the filter element is below 4 bar, the one-way valve on the filter element closes, and the lubricating oil passes through a dual filtration of 10 μ and 50 μ. This can ensure the cleanliness of the lubricating oil entering the gearbox, prevent unfiltered oil from entering the lubrication parts, and thus avoid impurities from causing wear on components such as gears and bearings. There is also a differential pressure transmitter installed on the filter. When the filter element is clogged and the pressure difference reaches 3 bar, the differential pressure transmitter will send a signal indicating the need to replace the filter element.

Temperature control mechanism: The temperature control valve automatically controls the flow of lubricating oil based on its temperature. When the oil temperature is below 45 ℃, the lubricating oil directly enters the gearbox; When the oil temperature exceeds 45 ℃, the temperature control valve starts to operate, and the lubricating oil enters the gearbox after being cooled by the cooler. Through this method, the lubricating oil entering the gearbox can be kept within an appropriate temperature range, ensuring the lubrication effect and normal operation of the gearbox.

Pressure monitoring mechanism: Pressure sensors are installed at the inlet of the gearbox and the outlet of the oil pump to detect the pressure of the lubricating oil. By monitoring pressure, it is possible to promptly detect any abnormalities in the lubrication system, such as oil pump failures, pipeline blockages, etc., in order to take corresponding measures for handling.

Safety protection mechanism: The lubrication system is equipped with a safety valve to prevent damage to system components caused by excessive pressure. At the same time, the system also needs to consider the ability to eliminate bubbles in the system at any time, as bubbles can cause damage to the gearbox, affecting lubrication and transmission stability.