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How to Assemble a Hydraulic Bladder Accumulator


Hydropneumatic accumulators are pressure vessels designed and built to store fluids under pressure. They are charged with nitrogen which is separated from the fluid section by a piston, bladder or diaphragm. HYDAC has over 50 years of experience in the research, development, design and production of the accumulators.
The principle applications of accumulators are energy storage, emergency and safety functions, damping and the reduction of vibrations, pulsation damping, shock absorption, suction flow stabilisation, media separation, energy recovery, volume and leakage compensation and also weight equalisation.

Using an accumulator improves the performance of the whole hydraulic system, and can give great safety and comfort for operators of machines.

It is important to know that Hydraulic Accumulators present an acute safety risk to personnel and equipment if not correctly engineered, applied or maintained.

Quality, safety and reliability are paramount for all HYDAC accumulator components. They comply with the current regulations (or standards) for pressure vessels in the individual countries of installation.

In taking delivery of a HYDAC hydraulic accumulator, therefore, the customer is assured of a high-quality accumulator product which can be used in every country in the world, depending on the certification.

HYDAC provides technical training courses on a variety of topics, and among them is the “Understanding Accumulators”. This is a three-day course which is designed as a detailed examination of accumulators. We examine all aspects of accumulator construction, sizing and operation within a system.

In the “Understanding Accumulators” course, you will learn all of that and much more. We will cover the following topics: a general introduction to accumulators, thermodynamics and calculations, pre-charge and test procedures, certification and approvals, legal requirements, Accumulator Simulation Software ASP, and the third day of the course is Hands-on, where bladder accumulators will be inspected, assembled, pre-charged and dis-assembled by you.

At the completion of the course, a certificate of acknowledgement will be issued to the participant, stating the course name and all other relevant details.

The purpose of this video is to give you some guidance of how to assemble a hydro-pneumatic accumulator. Note that only person with special technical training should assemble pressurised hydro-pneumatic accumulators. Assembling correctly will give you years of trouble free operation.

Thank you
HYDAC International (Australia)

AUSTRALIA 1300 449 322

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