Accumulators Available With Neotech

Main Features EHV
EHVF
 

OPERATING

PRINCIPLE

Due to the compressibility of the gas, nitrogen, the bladder accumulator enables to store, stock and return a liquid under pressure.

V0 = Capacity in nitrogen of the accumulator

V1 = Gas volume at the minimum hydraulic pressure

V2 = Gas volume at the maximum hydraulic pressure

V = Returned and/or stored volume between P1 and P2

P0 = Initial preload of the accumulator

P1 = Gas pressure at the minimum hydraulic pressure

P2 = Gas pressure at the maximum hydraulic pressure

P0 P1 P2  
V0 V1 V2  
A B C V

A - The bladder in the precharge position, which means that it is only filled with nitrogen. The anti- extrusion system closes the hydraulic orifice and prevents the destruction of the bladder.

B - Position at the minimum operating pressure ; there must be a certain amount of fluid between the bladder and the hydraulic orifice, such that the anti-extrusion system does not close the hydraulic orifice. Thus, P0 must always be < P1.

C - Position at the maximum operating pressure : the volume change

V between the minimum and maximum positions of the operating pressures represents the fluid quantity stored.

YOUR BENEFITS

To increase your production rates thanks to large instantaneous flow rates that only accumulators can provide.

Some spare power available at any time.

Example : EHV 50-330/90 Average flow : 650 L/mn Maximum pressure available :

320 Bar

Minimum pressure available : 250 Bar

Average power = Average flow x Average pressure/600 = 308 kW

The accumulatorís ability to run independently moderates its installation cost while reducing your equipment running cost.

With a similar accumulator in compliance with the European standard, your OLAER accumulator is suitable for use in more than

35 countries making it boundary friendly.

TECHNICAL

CHARACTERISTICS

This accumulator comprises

a forged steel shell, a fluid port assembly and a rubber bladder compatible with a large number of fluids. Itís special design allows the bladder (the strategic component) to compress

and deform into 3 lobes in order for the accumulator to store, then to deliver the fluid under pressure, as required.

The following technical characteristics are common to all type of accumulators.

Min./Max. working temperature acceptable ( Celsius) : - 40/+150 following the constructions

Shell material : Alloyed steelRubber compound NBR, IIR,

EPDM etc.

Protections : Bare metal, electro-chemical coating, epoxy resins, PTFE