Hydro-pneumatic accumulators use the principle of potential energy in the form of compressing and expanding nitrogen gas to allow hydraulic fluid to be stored or expended in various applications. The nitrogen gas that
Bag-type accumulator - a seamless rubber bag mounted within a high pressure steel cylindrical shell, usually with domed ends. A gas is charged on one side of the bag and the hydraulic fluid from the system can enter on the other. As the
Suitable for charging individual hydraulic accumulators or for supplementing the pre-charge pressure of individual hydraulic accumulators or accumulator stations. The N 2-Server consists
Hydro-pneumatic accumulators are the most widely used type of accumulator in industrial and mobile hydraulic systems. They use compressed gas to apply force to hydraulic fluid. Identical in their operating principle, Parker’s piston, bladder and diaphragm accumulators use different mechanisms to sepa-rate the gas from the fluid.
The accumulator should be mounted within 25° of vertical with the hydraulic port on the bottom. There should be approximately 10 inches (250 mm) of clearance above the gas valve to be able to connect the charging and gauging assemblies. Due to their heavy weight, they should be rigidly mounted using appropriate mounting hardware.
APPLICATION The optimum mounting type strongly depends on the use, type and size of the accumulator. Clamps, consoles and accumulator mounting sets are all possible options. As they are safety equipment, our mounting elements must only be attached and installed by trained staf.
The optimum mounting position for any accumulator is vertical, with the hydraulic port downwards. Piston accumulators can be mounted horizontally if the fluid is kept clean but, if solid contaminants are present or expected in significant amounts, horizontal mounting can result in uneven or accelerated seal wear.
A bladder accumulator also can be mounted horizontally, Figure 2, but uneven wear on the bladder as it rubs against the shell while floating on the fluid can shorten life. The amount of damage depends on fluid cleanliness, cycle rate, and compression ratio (defined as maximum-system-pressure/ minimum-system-pressure).
Mounting position The optimum mounting position for any accumulator is vertical with the hydraulic port down. Piston models can be horizontal if the fluid is kept clean. When solid contaminants are present or expected in significant amounts, horizontal mounting can result in uneven or accelerated seal wear.
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