What happens if the hydraulic oil of the hydraulic power unit is not selected properly?
We all know that the hydraulic power unit is equivalent to the human body, and the hydraulic oil is the special oil in the hydraulic system, which is equivalent to human blood. If there is a problem with the blood, it will bring a lot of conditions. Today, we all Talk about the improper selection of hydraulic oil in the hydraulic power unit?
In the hydraulic power unit, when there is a problem with the hydraulic oil, various failures will be caused to the hydraulic control system of the hydraulic power unit.
The viscosity of the hydraulic oil of the hydraulic power unit is not within the proper range. For example, a hydraulic system requires use at 20-70 degrees Celsius, but if VG46 hydraulic oil with a viscosity index of 100 is selected at this time, the oil is at 20 degrees Celsius. The kinematic viscosity is 134.6cST.
If the hydraulic system of the hydraulic power unit uses a gas-liquid direct contact type accumulator, water and glycol cannot be used.
Compared with mineral oil, synthetic refractory oil has a higher density. Water-containing refractory oil not only has a higher density but also has a higher vapor, which will produce greater resistance to the flow of oil. Therefore, in order to avoid the pump causing cavitation and vibration, The use of such oils should be avoided.
For small hydraulic equipment used under conditions of large temperature changes, if the viscosity change range is 3 times, the leakage will also change 3 times, which will have a greater impact on the small flow hydraulic system.
Therefore, when we use hydraulic power units to select hydraulic oil, we must pay attention to carefully selecting according to our actual working conditions to prevent various damages to the hydraulic system.