Hydraulic accumulators serve two purposes.(1) when moving at a low speed, the flow required by the load is less than the flow of the hydraulic pump. The excess flow of the hydraulic pump enters the accumulator. When the required flow of the load is greater than the flow of the hydraulic pump, the liquid is discharged from the accumulator to compensate for the insufficient flow of the hydraulic pump.(2) even if the stop also need to maintain a certain pressure of the case, the hydraulic accumulator stop hydraulic pump, compensation energy storage compensation system leakage, so as to maintain the pressure of the system.The hydraulic accumulator can also be used to absorb the hydraulic impact pressure generated by the pressure pulsation of the hydraulic pump or the absorption system. The pressure of the accumulator is compressed gas.

The energy storage device can be divided into gas type, heavy hammer type and spring type.The direct contact between gas and liquid in gas accumulator is called contact type. Zhejiang accumulator manufacturer has simple structure, large capacity, easy to mix gas in liquid, and it is often used in hydraulic press

Gas and liquid do not contact isolation type, commonly used bag and diaphragm isolation, bag volume change is large, membrane volume change is small, often used to absorb pressure pulsation?Heavy hammer type capacity, in rolling mill and other systems often used, can supply energy.?The types of hydraulic accumulators with compression efficiency are mainly as follows:

Spring and inflatable.Energy accumulator function (1) short-term large amount of supply (2) system pressure protection (3) emergency energy (4) impact pressure (5) absorption of pulsating pressure energy accumulator function is mainly divided into energy storage, absorption of hydraulic impact, removal of pulsating and recovery of energy.Class a: stored energy.This function can be subdivided into stainless steel hydraulic accumulator in practical use :(1) auxiliary power source to reduce the capacity of the machine;(2) compensation for leakage;(3) thermal expansion coefficient compensation;(4) set it as an emergency power source;(5) constitute a constant pressure oil source.The second category: suction valve suddenly turn, execution unit movement suddenly stops, the hydraulic system pressure, system pressure rise rapidly in a short time, cause the damage of instrument, components and sealing device, due to the accumulator should be arranged near the impact point, in order to ensure that the absorption effect of so accumulator are usually installed in such as control valve and hydraulic cylinder impact before the source.It absorbs and slows down very well