Abstract
In the paper are described the principal features of the weight-loaded and gas-loaded types of hydraulic accumulator together with the applications where they are of particular service.
A distinction is drawn between those gas-loaded accumulators where the gas and the pressure liquid are separated, and those where they are directly in contact with each other, and the separated type is further subdivided according to the method of separation.
The appropriate control gears for the various types of accumulator are described and special reference is made to the particular problems associated with the control of the non-separated type of gas-loaded accumulator.
The normal method used in calculating the volumetric ratio between the compressed gas and the usable liquid in gas-loaded accumulators is quoted, together with the effect of special conditions upon the amount of pressure variation. Figures are also given to show the effect of temperature changes upon the working pressure in this type of accumulator, and the normal maximum allowable working pressure in the non-separated type.
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