Hazards, Causes and Preventive Measures of Excessive Temperature in Hydraulic System

 

1. hazards of high temperature of hydraulic system:

 

When the temperature of the hydraulic system rises, it will degrade or age the fluid in use. Similarly, the increased temperature will reduce the viscosity of the fluid and affect the service life of the seals and hoses. Internal fluid contamination is another disadvantage of hydraulic system overheating. When the seal is damaged due to temperature, the rubber particles of the seal will contaminate the fluid, not only causing contamination, but also causing changes in chemical properties.

 

Mentioned above is the danger of overheating the system. In addition to this, overheating of the system is a major concern when considering the safety of workers. If the oil viscosity decreases, it may cause wear due to improper lubrication, resulting in hydraulic oil leakage. If the liquid leaks, workers have more opportunities to come into contact with this pressurized hydraulic oil, and eventually lead to dangerous health problems.

 

Most hydraulic fluids are flammable. Here, when the hydraulic fluid temperature increases, the possibility of fire is greater. Such fires affect not only petroleum-based hydraulic fluids, but also water-based hydraulic fluids. In a water-based hydraulic fluid, as the temperature increases, the water evaporates and the fire resistance decreases.

 

How to reduce the temperature of hydraulic oil so that workers can work in a safe environment? With proper hydraulic system care and maintenance, most of the problems associated with hydraulic systems can be avoided, and the best way to reduce hydraulic oil overheating is to use a fully functional coolant system and heat exchanger.

 

Common causes of high temperature of 2. hydraulic system:

 

The cause of overheating of the hydraulic system will be different. However, when the temperature rises, the negative effects will be visible on every component included in the system. Some common causes of hydraulic system overheating are listed below:

 

1) Heavy load system;

 

2) Fluid viscosity is too low/too high;

 

3) Internal leakage;

 

(4) pollution;

 

5) Insufficient capacity of reservoir;

 

6) Installation error;

 

7) Long-term continuous operation;

 

8) Coolant system failure;

 

9) The selected system component is damaged or wrong.

 

Precautions to 3. the temperature of the hydraulic system is too high:

 

How do you prevent the hydraulic system from overheating? Reducing the heat load and improving heat dissipation are two possible ways to reduce the overheating of the system. Among them, the expert's recommendation will be to reduce the thermal load. Because, if the heat load is minimized, the system performance will be improved. The heat load can be minimized by using a larger diameter hose, and heat dissipation can be improved by including a heat exchanger in the system. Here are some tips to make the hydraulic system operate normally without overheating problems:

 

1) The amount of fluid in the reservoir should be at least 3 times larger than the fluid pumped to the pump.

 

2) The heat exchanger and coolant system should be included in the hydraulic system.

 

3) It is always recommended to use a larger size water tank.

 

4) Always maintain the required liquid level.

 

5) Replace or repair damaged system components to prevent leakage.

 

6) Check the system regularly to avoid blockage.

 

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