Compensators
KJERNE offer robust bladder type subsea compensators and accumulators in a wide variety of sizes from 2,5 liters to 54 liters.
The variety of compensators are part of a common product platform, which enables us to quickly adapt compensators to special customer needs.
Our bladder compensators and accumulators are tested, qualified and manufactured to international standards. We also offer supports, fixtures, valves, coating or other accessories as required.
Bespoke units are available upon request to cope with low/high temperatures, aggressive fluids, or high flow rates, again many components will be carried in stock.
KJERNE support brackets and clamps are used to mount all types of compensators accumulators safely and simply, irrespective of the mounting position. Clamps, brackets and complete accumulator sets are available.
The supports are designed for static use for dynamic stresses, specially designed clamps are available on request.
Lightweight and robust
Economical
Mechanical and corrosion resistant
Product range
Type |
Volume |
ø |
Internal work pressure |
External work pressure |
Material |
Hydraulic port |
Vent port |
| Compensator | Net internal volume (litres) | Outer diamater og shell (mm) | Maximum operating internal overpressure (bar) | Maximum operating external overpressure (bar) | Bladder material | ||
| COM |
4 |
160 230 300 |
10 30 |
10 50 |
NBR LNBR ELNBR HNBR |
Technical Specs
Bladder technical data
|
|
NBR 3345 |
HNBR 2020L |
|
Definitions |
|
|
|
Chemical definition |
Acrylonitrile Butadiene |
Hydrogenated Acrylonitrile Butadiene |
|
ASTM D-2000 Classification |
BF, BG, BK |
DH |
|
Mechanical properties |
|
|
|
Elongation |
600 % |
400 % |
|
Tensile strength |
16 MPa |
25 Mpa |
|
Hardness |
70 Shore A |
70 Shore A |
|
Hardness range |
20 -95 Shore A |
30 – 95 Shore A |
|
Density (moulded) |
1,15 g/cm3 |
1,17 g/cm3 |
|
|
|
|
|
Thermal properties |
|
|
|
Temperature range (operation) |
-20°C – 100°C |
-30°C- +150°C |
|
Temperature range (static)Min. for continuous use (static) |
-40 °C − +120 |
-40 °C − +160 °C |
|
Brittle point |
-45 °C |
-50 °C |
History
Development of subsea compensators started with a challenge in a project for INEOS Oil & GasDenmark. The actuation system for the XT valves needed a 30-year durable compensation system.
Screening the market, we found no applicable solution, this initiated our internal development. Focus has been on creating a reliable product with 30 years lifetime in a corrosive and marine fouling environment.
The first product was a 20-l compensator that was tested and qualified. Since then, the product portfolio has grown to a range of subsea compensators and accumulators, differing in dimensions, capacities and functionality, all tailored to customers who has specific needs.
We continuously develop the products, turning experience from hands-ondevelopment, systematic testing, and industrial operation back into improved solutions.
Downloads
- Datasheet
- Compensator Product Reference List
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