Piston accumulators provide a means of regulating and optimising the performance of a hydraulic system. They are used in a wide range of mobile and industrial applications to reduce energy consumption, protect system components and prolong equipment life, reducing downtime and maintenance requirements.
Their simple, compact design ensures dependable performance with maximum efficiency and life service.
Where space or constructional limitations prevent the installation of an accumulator large enough to deliver the flow rate required, a smaller accumulator may be used for connecting it to an auxiliary gas bottle which can be located elsewhere. This arrangement enables very high flow rates to be achieved while allowing the greater part of the accumulator’s capacity to be given over to fluid.
Because of the large precharge ‘reservoir’ provided by one or more auxiliary gas bottles, gas pressure is relatively constant over the full discharge cycle of the accumulator.
Liquids are practically incompressible and therefore cannot be used directly for storing energy. Hydro-pneumatic accumulators use the differing compressibility of liquid and gaseous media to enable energy to be stored in liquids under pressure.
The absence of dynamic sealing surfaces, make bladder accumulators tolerant of contamination and particularly suitable for low-lubricity fluids. Specially formulated for low permeability, Parkers bladders retain their high performance under a wide range of operating conditions including closed loop operation. Optional bladder compounds are available to suit all common fluids and operating temperatures.
Rotec offer quality design, build, installation and maintenance of hydraulic, pneumatic and electronic components and systems in the aerospace, agriculture, industrial, marine, transport and utilities sectors throughout the UK and internationally.
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