The Importance of Pressure Control in Hydraulic Power

Blog | May 16th, 2016

Fluid power systems are made from scores of tubes and control elements. The hydraulic energy delivers powerful forces as generated by a prime mover and transmitted by a non-compressible oil. One factor that hasn’t received much attention up until now is limitations. The hydraulic energy developed by an electric motor or fuel-fed engine is capable of moving huge loads, but it must be framed by control mechanisms and safety-oriented systems. In short, we must incorporate system-governing principles, a hardware component that addresses pressure control in hydraulic power circuits.

Off-Loading and Stoppage

Pressure valves are employed on this occasion. Responsible for limiting the force of the fluid as it acts on different segments of the circuit, the valves apply a proportional control principle to offload the fluid and return excess oil back to the reservoir. Many of these pressure regulating and compensating devices use a form of control that can be compared to amplifier electronics, with a tiny feedback signal acting as the regulating agent. Such regulating devices ensure the right quantity of fluid incurs the right amount of force and no more. Pressure control in hydraulic power, therefore, unloads system power and stops the hydraulic fluid from causing damage to the machine. Additionally, the valve acts as a safety device, one that activates during a catastrophic system failure.

Pressure Regulation

The above passage warns of circuit limitations, safety considerations, and the incredible fluid-generated forces that could damage a hydraulically operated machine, but pressure regulation is also just part of the principles used in this engineering form. Main fluid power branches generate enormous amounts of pressure. The function of the controller in this situation is to “step down” the pressure and transform the energy so that it drives smaller fluid lines. Additionally, what about those times in a work scenario when a big loader isn’t active? The boom or hydraulically-actuated digger is stalled or just idling, but the prime mover is still generating power. The purpose of pressure control in hydraulic power situations like the one posed here is simply to offload the fluid so that no energy is wasted.

Pressure Control Benefits Include The Following:

  • Overload protection
  • System regulation and pressure compensation
  • “Stepping down” of pressure
  • Applying the required amount of energy without incurring waste.

Bad things happen when pressure control systems are faulty. Faulty systems cause the oil to heat, energy to be wasted, and there’s a real potential for machine damage and operator endangerment.

Mobile Hydraulic Specialties Pty Ltd

Factory 89, 38-40 Popes Road
Keysborough, Victoria, 3173

Phone: (03) 9798-6511

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Mobile Hydraulic Specialties Pty Ltd

Phone: (03) 9798-6511
Address: Factory 89, 38-40 Popes Road, Keysborough, Victoria, 3173