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» Home » Hydraulic accumulators

 
Hydraulic accumulators
 
D&D Ricambi Srl: the leader on supply of hydraulic components and systems
hydraulic components for construction, earthmoving, agricultural and industrial machinery
 
 

HYDRAULIC ACCUMULATORS

D&D’s hydro-pneumatic accumulators regulate the performance of a hydraulic system by providing an additional volume of system fluid, pressurized by an external gas supply.

A correctly specified accumulator can:

reduce shock effects in a system resulting from inertia or external mechanical forces
maintain system pressure by compensating for pressure loss due to leakage
provide a back-up supply of hydraulic energy to maintain a constant flow when system demand is greater than pump delivery.

In industrial applications, three types of hydro-pneumatic accumulators are widely used – the piston type, bladder type and diaphragm type. Each has particular advantages and limitations which should be considered when selecting an accumulator for a specific application. 

 


BLADDER ACCUMULATORS

Bladder accumulators provide a means of regulating the performance of a hydraulic system. They are suitable for storing energy under pressure, absorbing hydraulic shocks, and dampening pump pulsation and flow fluctuations. Bladder accumulators provide excellent gas and fluid separation ensuring dependable performance, maximum efficiency, and long service life.
Features

Operating Pressures to 6600 PSI
Ten Different Capacities from 10 cu in to 15 gallons
ASME Certification Standard, 1 Gallon & Up
Operating Pressures to 6600 PSI
Water/Chemical Service Available, with Stainless Steel Ports
Five Bladder Compounds to Suit a Variety of Fluids & Temperatures

HYDRAULIC DIAPHRAGM ACCUMULATORS

Diaphragm Accumulators provide an affordable means of enhancing the performance of a hydraulic system. They are suitable for storing energy under pressure, absorbing hydraulic shocks, and dampening pump pulsation and flow fluctuations.
Features

Operating Pressures to 250 Bar
Capacities from .075 to 2.80 Liters
Compact and Lightweight
Low Cost, Non-Repairable Design
Nitrile & Hydrin Diaphragms
Durable Metric Gas Valve

PISTON ACCUMULATORS

Piston accumulators provide a means of regulating the performance of a hydraulic system. They are suitable for storing energy under pressure, absorbing hydraulic shocks, and dampening pump pulsation and flow fluctuations. The simple, compact, cylindrical design of piston accumulators ensures dependable performance, maximum efficiency, and long service life.

Features

Heavy Duty Service with Operating Pressures to 5000 PSI
2" thru 12" Bores with Over Fifty Standard Capacities
"Fatigue Tested" Designs, 2" thru 8" Bores
V-O-ring Piston Seals
Serviceable Threaded End Construction
Five Standard Seal Options to Handle a Variety of Fluids and Temperatures

HYDRAULIC PISTON ACCUMULATORS

Piston accumulators are suitable for storing energy under pressure, absorbing hydraulic shocks, and dampening pump pulsation and flow fluctuations. The simple, compact, cylindrical design ensures dependable performance, maximum efficiency and long service life.
Features

Heavy Duty Service with 3000 PSI Operating Pressure
2" thru 12" Bores with Over 50 Standard Capacities
V-O-ring Piston Seals
Serviceable Threaded End Construction
Five Standard Seal Options to Handle a Variety of Fluids and Temperatures
ASME Certification and CE Marking Available

METAL BELLOWS ACCUMULATORS

Metal bellows accumulators are hydropneumatic accumulators with a metal bellows as a separation element between the compressible gas cushion and the operating fluid. The separation element is designed as either a bellow or as a welded diaphragm bellows.

D&D metal bellows accumulators are versatile in their application. For example, they are used for pulsation damping on heavy diesel engines or in the chemical industry. In the aeroplane industry, this type of accumulator design is usually used as energy accumulators or for volume compensation, respectively.

Essential specifications are:

Nominal volume: up to 6 l,
Permitted operating pressure: up to 210 bar

The following advantages set D&D metal bellows accumulators apart:

gas-tight,
maintenance-free,
media-resistant over a wide temperature ranges.

To protect your hydraulic accumulators against non-permitted temperature increase and/or excessive pressure, we recommend our safety devices. 

D&D hydraulic accumulators save energy and improve manufacturing efficiency by using the accumulator as a storage device to store hydraulic pump output flow when system demand is low and supplement output when demand is high.

Our hydraulic accumulators are used to:

Store power for intermittent duty cycles, economizing hydraulic pump drive power
Provide emergency or standby power
Compensate for leakage loss
Provide suspension in vehicles
Dampen pulsations and shocks of a periodic nature 

 
       
         

 

 Hydraulic accumulators
  Bladder type accumulators
  Membran type accumulators
  PVC/Polypropylene accumulators
  Piston type accumulators
  Inox steel type accumulators
  measurement and control instruments
 
 Applications
  Hydraulic accumulators
 
 Pressure switches
  Electrohydraulics pressure switches
  Pneumatics pressure switches
  Electronic pressure switches
  Differential pressure switches
  Vacuum pressure switches

 

 

 

 
 
 

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Thanks to the know-how and partnerships with global leaders suppliers of hydraulic components, our organization is able to offer customers the best solutions.

Our technical department is available to suggest the best solutions for every need.
Besides standard products supply, D&D Ricambi Srl provides custom solutions for small quantitatives.
 
SP 231 Km 80,176 - 70026 Modugno (Ba)
Fax +39 080.5352723  e-mail:info@dedricambi.it

 

 

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