Introduction Of Hydraulic Pumps & Frequently Encountered Problems
Hydraulic Pumps are used in hydraulic drive systems (They can be hydrostatic or hydrodynamic). These pumps convert mechanical power into hydraulic energy. Hydrostatic pumps are positive displacement pumps whereas hydrodynamic pumps are variable displacement pumps. In our day-to-day life, we frequently use hydrodynamic pumps while hydrostatic pumps generally used in the fluid power motion control applications.
There are various types of Hydraulic Pumps. Some of them are Gear pumps, Rotary Vane pumps, Screw pumps, Bent axis pumps, Axis Piston pumps, Radial Piston pumps, Peristaltic pumps.
There are a number of reasons which can cause the failure of a Hydraulic Pump. Among them, some notable problems and their solutions are listed below:
* It is an estimation by many Hydraulic Pump Manufacturers that 70 to 80 percent of hydraulic system failures are from contaminations. To prevent such damaging effects, we should perform oil analysis with particle counts at regular intervals.
* Another major complaint about Hydraulic Pumps is abnormal noise. This problem usually arises due to the factors of aeration or cavitation. Aeration happens when air contaminates the hydraulic fluid and Cavitation occurs when the quantity of fluid required by any part of a hydraulic circuit exceeds the quantity of fluid being supplied. To curb the chances of aeration, we have to make sure pump intake lines are in good condition and all fittings and calps are tight enough to ensure smooth functioning. Cavitation can be controlled by focusing on the system components. The filter and inlet strainer of a pump should not be clogged. So, if you find it damaged, then it is better to replace old intake lines.
* The decreasing levels of Hydraulic Pump’s performance can also be categorized as one of the frequently encountered problems. External leakage like burst hose and internal leakages in valves or actuators can slower the performance of your pump. Hydraulic flow-tester is required to find the leakages inside the pump.
* Poor Hydraulic Fluid Viscosity in a Hydraulic Pump can cause a serious threat to the capacity of the pump. This viscosity levels should be maintained at certain levels and fluctuations should not occur under any circumstances. If the Hydraulic fluid viscosity level is high, it may lead to cavitation and in a similar manner, if the level is low, it may result in excess heat and leakages inside the pump.
Hydraulic Pump Manufacturers should provide optimum solutions to all the above-mentioned issues and post-purchasing services should include satisfactory customer service.
There are various types of Hydraulic Pumps. Some of them are Gear pumps, Rotary Vane pumps, Screw pumps, Bent axis pumps, Axis Piston pumps, Radial Piston pumps, Peristaltic pumps.
There are a number of reasons which can cause the failure of a Hydraulic Pump. Among them, some notable problems and their solutions are listed below:
* It is an estimation by many Hydraulic Pump Manufacturers that 70 to 80 percent of hydraulic system failures are from contaminations. To prevent such damaging effects, we should perform oil analysis with particle counts at regular intervals.
* Another major complaint about Hydraulic Pumps is abnormal noise. This problem usually arises due to the factors of aeration or cavitation. Aeration happens when air contaminates the hydraulic fluid and Cavitation occurs when the quantity of fluid required by any part of a hydraulic circuit exceeds the quantity of fluid being supplied. To curb the chances of aeration, we have to make sure pump intake lines are in good condition and all fittings and calps are tight enough to ensure smooth functioning. Cavitation can be controlled by focusing on the system components. The filter and inlet strainer of a pump should not be clogged. So, if you find it damaged, then it is better to replace old intake lines.
* The decreasing levels of Hydraulic Pump’s performance can also be categorized as one of the frequently encountered problems. External leakage like burst hose and internal leakages in valves or actuators can slower the performance of your pump. Hydraulic flow-tester is required to find the leakages inside the pump.
* Poor Hydraulic Fluid Viscosity in a Hydraulic Pump can cause a serious threat to the capacity of the pump. This viscosity levels should be maintained at certain levels and fluctuations should not occur under any circumstances. If the Hydraulic fluid viscosity level is high, it may lead to cavitation and in a similar manner, if the level is low, it may result in excess heat and leakages inside the pump.
Hydraulic Pump Manufacturers should provide optimum solutions to all the above-mentioned issues and post-purchasing services should include satisfactory customer service.
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