One of the most important industrial applications of accumulators is in the elimination or reduction of high-pressure pulsations or hydraulic shocks. Hydraulic shock (or water hammer, as it is frequently called) is caused by the sudden stoppage or deceleration of a hydraulic fluid flowing at a relatively higher velocity in the pipelines. This hydraulic shock …
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Hydraulic Accumulator as Leakage Compensator
In this application (Figure 7.23), the accumulator acts as a compensator, by compensating for losses due to internal or external leakage that might occur during an extended period of time, when the system is pressurized, but not in operation. The pump charges the accumulator and the system, until the maximum pressure setting on the pressure …
Read More…Bladder Type Separator Gas Loaded Hydraulic Accumulator
The bladder-type accumulator contains an elastic barrier between the oil and gas as shown in the cross-sectional view in (Figure 7.20). The bladder is fitted to the accumulator by means of a vulcanized gas-valve element that can be installed or removed through the shell opening at the poppet valve. The poppet valve closes the inlet …
Read More…Diaphragm Type Separator Gas Loaded Hydraulic Accumulator
The diaphragm-type accumulator consists of a diaphragm secured in a shell and serving as an elastic barrier between the oil and the gas. The cross-sectional view of a diaphragm type accumulator is shown in Figure 7.18. A shut off button which is secured at the base of the diaphragm, covers the inlet of the Hne …
Read More…Non-Separator Type Hydraulic Accumulator
The non-separator type consists of a fully enclosed shell containing an oil port at the bottom and the gas-charging valve at the top. The valve is confined to the top and the oil to the bottom of the shell. There is no physical separator between the gas and oil, and thus the gas pushes directly …
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