What are the effects of the oil temperature, oil pressure difference, and abnormal oil level of industrial chillers?

At present, the piston type chiller stores the lubricating oil in the compressor crankcase, while the screw type chiller has an independent lubricating oil system, its own oil reservoir, and an oil cooler specially used to reduce the oil temperature. Therefore, whether the oil temperature, oil pressure difference and oil level are appropriate or not will have an important impact on the chiller.

1. Oil temperature

Oil temperature refers to the temperature of the lubricating oil when the chiller is working. The oil temperature has an important influence on the viscosity of the lubricating oil. If the oil temperature is too low, the viscosity of the oil will increase, the fluidity will decrease, and it is not easy to form a uniform oil film, so the expected lubrication effect cannot be achieved, and it will also cause the flow speed of the oil to decrease, reduce the amount of lubrication, and the power consumption of the oil pump. Increase; if the oil temperature is too high, the viscosity of the oil will decrease, and the oil film will not reach a certain thickness, making it difficult for the running parts to withstand the necessary working pressure, resulting in deterioration of the lubrication condition, aggravated wear of the moving parts, and failure of the chiller.

Second, the oil pressure difference

It is the guarantee that lubricating oil needs to overcome the flow resistance when it flows to various working parts in the pipeline of the oil system under the drive of the oil pump. Without sufficient oil pressure difference, it is impossible to ensure that the lubrication system has sufficient lubrication and cooling oil volume and the power required to drive the energy adjustment device. Therefore, the oil pressure difference of the chiller oil system must be ensured in a reasonable range to facilitate the unit The moving parts are fully lubricated and cooled, and the energy adjustment device can be manipulated flexibly.

3. Мұнай деңгейі

It refers to the level of lubricating oil in the oil storage container. The oil storage container of the chiller is equipped with an oil level display device. Generally, it is stipulated that the oil level in the oil storage container should be 5mm above and below the central horizontal line of the sight glass. The purpose of specifying the oil level is to ensure that the oil pump needs enough oil to form an oil circulation when it is working. If the oil level is too low, it is easy to cause insufficient oil pumps, which may cause operation failures or damage the equipment. Excessive oil level is likely to cause compressor “oil strike”, which is also a kind of “liquid strike”.