Resonance
amplifies the oscillation amplitude, which may lead to self-destruction, even at lower power. In fluid technology, the resonance is primarily of importance for systems with feedback () and in the case
Power losses
internal and external leakage losses and compression losses , losses resulting from the flow of the fluid (losses due to changes in cross section or direction, churning losses, friction losses), mechanical
Hydropneumatic accumulator
Hydraulic accumulator that uses a gas as the medium for applying a load to the hydraulic fluid (air for accumulators for water hydraulics , nitrogen for oil accumulators). As a consequence of the gas cushion
CETOP
in 1962. Over 700 businesses from 13 European countries are represented in CETOP by the national fluid technology associations. The member associations are from Belgium, Denmark, Germany, Finland, France [...] Sweden, Switzerland, Slovenia and Spain. The objective of CETOP is to promote and support the European fluid technology industry. The committee is particularly important in relation to the European Union. National [...] Long before the responsible ISO committee was founded, CETOP published technical recommendations for fluid technology. Today CETOP still has a leading role in the preparation of technical standards for example
Swivel motor
up to 360°. Rotor swivel motors generate their torque directly through fluid admission of a rotating wing to allow hydraulic fluid , which is connected to the drive shaft ( c ). Very compact design with
Loop line
Ring-shaped (loop) hydraulic fluid line to supply multiple consumers. Compared with a stub line, the loop line enables: a balanced supply of pressure, i.e. there are smaller pressure fluctuations and smaller
Flow rate range of flow requirement
: Range between the minimum and maximum flow rate as a factor of the temperature of the hydraulic fluid at a constant pressure difference: Q = f ( t , p = const.) under stated test conditions.
Piston type accumulator
Hydraulic accumulator with a free-moving piston as a separator between gas and hydraulic fluid (Figure K 19) . Since there is no separating wall made of rubber, the fatigue resistance is greater than for
Framework conditions
conditions, such as the range of the working temperature, features of the ambient air, type of >hydraulic fluid, amongst others. Operating conditions, such as load curve, dynamic requirements Stiffness , >noise
Safety gate valve
the movable protective grid of the machine in that it interrupts the incoming flow of the pressure fluid when the gate is open. The safety gate valve is designed as a pilot-controlled seated valve with a