Tiêu đề 1.7 Accumulator , Intensifier and Hydraulic ram.pdf ✅

Hydraulic Accumulator Function “The hydraulic accumulator is a device used for storing the energy of a liquid in the form of pressure energy when it is not needed and may be supplied for any sudden or intermittent requirement.” Construction and Working • In case of hydraulic lift or the hydraulic crane, a large amount of energy is required when lift or crane is moving upward and this energy is supplied from hydraulic accumulator. • But when the lift is moving in the downward direction, no external energy is needed to operate them; during this period the energy from the pump is stored in the accumulator. • The hydraulic accumulator is consists of a fixed vertical cylinder containing a sliding ram and a heavy weight is placed on the ram

Capacity of Hydraulic Accumulator It is defined as the maximum amount of hydraulic energy stored in the accumulator.” The expression for the capacity of accumulator is obtained as: Let’s take, A= Area of the sliding ram L =Stroke or lift of the ram p =Intensity of water pressure supplied by the pump, W =Weight placed on the ram (including the weight of ram) = Intensity of pressure x Area of ram= p x A The work done in lifting the ram = W x lift of a ram = W x l = p x A X l Work done in lifting the ram is also the energy stored in the accumulator and energy stored is equal to the capacity of the accumulator. Capacity of accumulator = work done in lifting the ram = p x A x l = p x V