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| What is commonly called an accumulator ain't a whole lot different from a bladder type well tank, other than the operating pressure and material used.
The devices used to take the shock out of the ooil system on combines and such machines are really more of a snubber than an a true accumulator. You can, actually accomplish the same effect with an inverted U shape length of hose, blocked at one end, as is done on a lot of pressure washers to minimize pulsation. When a large hydraulicly supported load, combine head~ bounces, incredible leverage places phenominal instantaneous pressures on the cylinders and tube system, easily 10 times what the pump normally puts there, and without a mechanism to absorb the pressure pulse, something is gonna break, and oil is gonna fly. This lesson was learned in the 60s, many many times, when brilliant engineers sitting in air conditioned offices designed hydro systems, and field engineers refused to listen to millwrites and mechanics. Fortunately, back then, oil was cheap, and there was no EPA to mandate expensive cleanups.
A TRUE hydraulic accumulator is a vessel very similar in operation to the cylinder and piston in an engine. One side of the piston is supported by a force, be it a spring or gas charge, that can be compressed, and the opposite side of the piston is aa chamber holding hydro fluid. During slack usage of fluid by the system, the pump fills the fluid side of the piston to max system pressure. Whan a valve opens, the system has full pressure available, and the pump has a buffer time to acheive full system pressure. This type of system comes into play most often is machines like hydraulic cranes, where it's considered absolutely necessary for the system to be able to deliver 100% pressure and volume instantly 100% of the time.
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Welding air tank advice.
