Submarine Hydro Penumatic Fender
Submarines and other vessels which contact fenders below waterline require a unique solution.Hydor-pneumatic fenders are specially adapted to this application.The fender body is partially water-filled,then pressurised with air and ballasted to make it stand vertically, fender draft and performance can be tuned by altering the water :air ratio and inflation pressure.
Hydro-pneumatic rubber fender also made up by rubber and synthetic-tyre-cord, and also has outer rubber,layer-cord and inner rubber.It is also been vulcanized together to withstand tension and pressure and other forces.
Outer rubber: Cover outside of the fender to protect cord layer and inner rubber from other external forces. It has high tensile resistance,tear resistance and wear resistance.
Synthetic-tyre-cord: Maintain the internal air pressure of the fender and strengthen the strength of fender. It can make fenders be more pressure-resistant and small deformation.
Inner rubber: Seals the pressurized air inside the fender to prevent air leakage. It can also keep the inner pressure of the fender.
Advantages of JRB pneumatic fenders:
1 Performance can be adjusted by altering the air-water ratio |
2 Required draft can be adjusted |
3 Low hull pressures |
4 Self-adjustment during tidal variation |
5 Low installation and maintenance cost |
Performance Table
SIZE * D | INITERNAL PRESSURE | BODY WEIGHT | SAFETY VALVE PRESSURE SETTING | TESTING PRESSURE | INITERNAL PRESSURE | BODY WEIGHT | SAFETY VALVE PRESSURE SETTING | TESTING PRESSURE |
mm(D) * mm(L) | kpa | kg | kpa | kpa | kpa | kg | kpa | kpa |
1700 *7200 | 50 | 940 | | 200 | 80 | 1140 | 250 | |
2000 * 6000 | 50 | 930 | | 200 | 80 | 1100 | 250 | |
2500 * 5500 | 50 | 1300 | 175 | 250 | 80 | 1460 | 230 | 300 |
2500 * 7700 | 50 | 1854 | 175 | 250 | 80 | 2030 | 230 | 300 |
2500 * 9100 | 50 | 2300 | 175 | 250 | 80 | 2480 | 230 | 300 |
3300 * 6500 | 50 | 2200 | 175 | 250 | 80 | 2520 | 230 | 300 |
3300 * 8600 | 50 | 3140 | 175 | 250 | 80 | 3350 | 230 | 300 |
3300 * 10600 | 50 | 4200 | 175 | 250 | 80 | 4700 | 230 | 300 |
4500 * 9000 | 50 | 5000 | 175 | 250 | 80 | 5500 | 230 | 300 |
4500 * 11000 | 50 | 5600 | 175 | 250 | 80 | 6100 | 230 | 300 |
4500 * 12000 | 50 | 7000 | 175 | 250 | 80 | 7600 | 230 | 300 |
Applications