Why is the hydraulic fluid frozen?
The hydraulic fluid plays an important role in the hydraulic system, which is responsible for lubrication, power transmission and cooling. However, like most liquids, hydraulic fluids also have a freezing point. Once the temperature drops below this freezing point, the fluid becomes more viscous and the viscosity increases, thereby hindering its flow. In extreme cases, the fluid may even freeze completely, which may cause the following problems:
·Increased wear: As the fluid is concentrated, friction between moving parts increases, accelerating the process of wear and tear.
·Poor lubrication: poor lubrication can cause damage to components and reduce the overall efficiency of the system.
·Loss of performance: frozen fluid restricting flow, resulting in power loss and system failure.
·System breakdown: A completely frozen fluid may block the pump and valves and cause serious damage to the system.
To reduce these risks, especially in cold climates, it is important to keep the hydraulic fluid above freezing.
Strategies to prevent freezing of hydraulic fluid
There are many ways to effectively prevent the freezing of hydraulic fluid:
1. Select low-temperature hydraulic oil:
·Special fluid: select hydraulic fluid specially designed for low temperature environment.
·ADDITIVE REINFORCED OILS: These oils provide superior performance at low temperatures.
·VISCOSITY CONSIDERATIONS: ensure that the viscosity of the selected fluid is within the expected operating temperature range.
2. Plate heat exchangers are used:
·High-efficiency heat exchange: plate heat exchanger improves heat exchange efficiency by maximizing heat exchange area.
·Temperature control: effectively prevent excessive cooling and freezing.
3. Fan driven hydraulic oil cooler system:
·Forced air cooling: efficient heat dissipation by forced air flow.
·Temperature regulation: maintain the fluid within the optimal operating temperature range.
4. Strengthening insulation measures:
·Insulate hydraulic components such as reservoirs and hoses to help retain heat and prevent rapid cooling.
5. Preheating fluid:
·Preheating the fluid before operation, especially in extreme cold environments, can effectively prevent freezing.
By implementing the above strategies, the stable operation and reliable performance of the hydraulic system can be ensured even under the worst winter conditions.