Olaer introduces
Charlatte
Olaer has over 70 years experience in selling
high pressure (up to 700 bar), small volume, bladder type pressure
vessels used for Storage, Valve Closure and emergency standby
applications. We have now complimented our range with a new
range of bladder accumulators design for large volume –
low pressure surge applications. This type of low pressure units
is designed for water applications. This new range is also complimented
by a waste water range.
A primary use for this range of units is protection
of pipe networks. Typically this means surge. Surge is a liquid
pressure transient that can occur due to pump shutdown, pump
start-up and sudden valve actuations. Surges can produce fatigue
and catastrophic failure of the pipes. For more detailed information
on surge please refer to this
document.
Product: Large
Bladder Vessels up to 120,000 Ltr
Main Advantages:
• Low Maintenance
• No need for a compressor
• Self contained
• No Corrosion - Fluid is contained
in a Butyl Bladder
• No Need for Electricity
Bladder accumulators have the same mission
with regard to surge control as the traditional compressor vessel.
The objective of this pneumatic solution is to simplify the
method of regulation.
In a similar way to a vessel controlled by
compressors, a pre-charge pressure is calculated to give the
required elasticity to push the water into the system following
a pump shut down or power cut.
One of the major advantages with the Charlatte
Surge Vessel is that you do not require a Compressor which is
costly to install and maintain. Charlatte Vessels are self contained
and need no power supply for them to function.
The major difference with Bladder Surge Vessel
being that the liquid is contained within a rubber bladder (compatible
with drinking water). Therefore, as there is no contact between
the compressed air and the wate, there is no dissolution of
the air into the water. There is thus no requirement for a permanent
regulation system including compressors.
Another advantage is that the potential for
internal corrosion is reduced dramatically due to the fact that
water is contained inside the rubber bladder and does not come
into contact with the steel vessel.
Once the vessel has been commissioned and
the correct precharge has been applied, the vessel will operate
automatically emptying when called upon and refilling with the
return waves until naturally finding its steady state balance.
Charlatte have been successfully manufacturing
bladder vessels for over 30 years, ranging in volume from 8
to 120,000 litres.
Above vessels can be also used for storage
and pulsation dampening applications.
The vessel can either be horizontal or vertical.
It comprises of a steel vessel containing a rubber bladder made
from butyl rubber, (suitable for use with drinking water) and
a flanged connection pipe equipped with anti-extrusion grill.
The vessels are treated internally with food quality epoxy paint
as corrosion protection and externally to client specification.
In order to verify the level the vessel it
is normally equipped with a level indicator (for large vessels)
as well as a manometer to verify the initial precharge pressure.
These units are now commonly used on surge
systems throughout Europe and the U.S.
For
information about Water Surge Vessels, download the following
document:
- large volume,
low pressure water systems Accumulator
Download more information (pdf documents):
- Piping
Surges
- Solutions
to Surge
- EPA Paper On Pathogen Intrusion During transients
or contact ozren@olaer.com.au
