Spring Type Fluid Accumulator - General Design

Hydraulic and Pneumatic Knowledge
Fluid Power Equipment

Spring-Loaded Accumulator: This accumulator is used in some engineer equipment hydraulic systems. It uses the energy stored in springs to create a constant force on the liquid contained in an adjacent ram assembly. The illustration below, shows two spring-loaded accumulators. The load characteristics of a spring are such that the energy storage depends on the force required to compress the spring. The free (uncompressed) length of a spring represents zero energy storage. As a spring is compressed to the maximum installed length, a minimum pressure value of the liquid in a ram assembly is established. As liquid under pressure enters the ram cylinder, causing a spring to compress, the pressure on the liquid will rise because of the increased loading required to compress the spring.

Spring Type Fluid Accumulator

Spring Type Fluid Accumulator
Click on image to enlarge