040-278 955 03/05

  info@rgfluidpowerhydraulics.com
  vizagbr@rgfluidpowerhydraulics.com

Accumulators

A piston type accumulator is a hydraulic device.

A piston type accumulator is a hydraulic device used to store energy in a hydraulic system by using a piston to separate a gas and hydraulic fluid. This type of accumulator provides a means of absorbing shocks, maintaining system pressure, storing energy, and compensating for fluctuations in fluid demand or pressure. It is widely used in applications where high pressure and compact design are crucial, such as in hydraulic circuits for machinery, industrial equipment, and mobile systems, etc…

A piston type accumulator consists of the following key components:

Cylinder: The main housing of the accumulator, typically made of high-strength steel or alloy material, designed to withstand high pressures.
Piston: 2.A solid metal piston that separates the hydraulic fluid (usually oil) from a compressible gas (often nitrogen). The piston moves within the cylinder, dividing the cylinder into two chambers – one filled with gas and the other with hydraulic fluid.
Gas Chamber: One side of the piston contains pressurized gas, typically nitrogen. The gas is used to provide the potential energy stored in the accumulator, and it can be compressed and expanded as the hydraulic fluid is either stored or discharged from the accumulator.
Fluid Chamber: The other side of the piston is filled with hydraulic fluid. The fluid can be displaced by the piston, either entering or leaving the chamber depending on the system's requirements.
Ports And Valves Ports are provided for the inflow and outflow of hydraulic fluid. Valves may also be used to control the flow of fluid and prevent the gas from entering the hydraulic circuit directly.
APPLICATION BENEFITS:
Reduction of installed power. Using an accumulator as an energy storage device effectively reduces the required flow rate capacity of the hydraulic pump. This results in a reduction of the installed power.
Emergency and safety. An accumulator which is kept fully charged allows for instant and/or repetitive operationsas required (braking, opening of door, etc.).
Dampening of pulsation and reduction of noise. In order to dampen pressure changes, which are caused by the pulsation of a pump, an accumulator makes it possible, due to the low inertia of its bladder, to improve the precision of operation and to reduce the sound level of the installation.
Thermal expansion. The pressure differences caused by thermal variation in a closed hydraulic circuit are absorbed by fitting an accumulator.
Surge control. Designed to protect high volume flow systems from surge and water hammer damage. In order to protect the system, an accumulator correctly sized and located in the system transforms pressure wave oscillations into liquid mass oscillations which are easily absorbed by the accumulator, bringing the pressure peak level back to acceptable levels.
Suspension of heavy vehicles. An accumulator which is kept fully charged allows for instant and/or repetitive operationsas required (braking, opening of door, etc.).

On maintenance machinery, transport platforms etc., an accumulator which is connected to the suspension chamber acts as an adjustable shock absorber.

THE TECHNICAL SPECIFICATIONS ARE:
Nominal Volume up to 1000 lpm
Available Elastomers NBR, ECO, IIR, FKM
Accumulator shell materials carbon steel, stainless steel, aluminium
ANANDSHEEL HYDRAULICS MARKETS ACCUMULATORS OF DIFFERENT TYPES SUCH AS:
  • Bladder, Diaphragm, welded & piston type.
  • Accumulator Batteries
  • Safety block assemblies.
  • Nitrogen charging kits.
  • Nitrogen boosting units.

TYPICAL APPLICATIONS:
  • Construction/Mining Equipment-emergency back up for steering and brakes.
  • Hydrostatic Drive-shock absorption when changing directions.
  • Injection Molding/Die Castion-high pressure in a short time period.
  • Plunger/Diaphragm Pumps-shock absorption.
  • Fork Lifts/ Cherry Pickers' pressure spike dampening.
  • Machine Tools-pressure maintenance with pump sixe reduction
  • Transportation vechicles-suspension systems and braking backup.
  • Turbine Engine-oil supply for lubrication.
  • Winches-maintaining line tension.

HOW THE BLADDER ACCUMULATOR WORKS?

The Hydro-pneumatic bladder accumulator is essentially a fluid pressure storage chamber in which. the potential energy of an incompressible fluid under pressure can be stored against a compressible force of a gas to do useful work. This stored fluid is readily available to perform a given task when called upon by the requirements of the system in which it is used. The flexible rubber bladder in the enclosed shell is precharged with a gas, such as nitrogen, to a pressure determined by the system's working pressures and loads when the hydraulic pump forces fluid into the system pressure. The stored potential energy of the fluid held under pressure serves as a quick secondary source of energy.

STANDARD BLADDER COMPOUNDS (THE BLADDER CAN BE SUPPLIED WITH THE FOLLOWING CHOICES OF COMPOUNDS TO RENDER IT COMPATIBLE WITH THE SYSTEM FLUID.)

  • 3 = Buna N High Temperature.
  • -4 = Low Temperature
  • -8 = EPR (Ethylene Propylene)
  • 3 = Fluorocarbon (Viton)
  • COMPATIBLE WITH A WIDE RANGE OF LIQUIDS.

  • Industrial Oils: Petroleum, Edible Oils.
  • Chemicals: Water, Sewage.
  • Fire Resistant Fluids: Slurries, Liquid Foods.
  • Lubricants:Fuel, Drilling Mud.

Products list
Download
WhatsApp