Marine Pneumatic Rubber Airbag for ship launchinglifting and salvage
ship airbag is an innovative technology that has utmost bright prospect in shipbuilding. It
overcomes the disadvantage of fixed track launching by which the productivity of
shipbuilding and ship repairing were limited in the small-sized and medium-sized shipyards.
Now the Flexible Launching Technology is highly versatile and helps maritime companies save
effort, time, work load and investment. The technology is flexible, safe and reliable.
The Storage of Ship Launching Airbag
1.When a airbag unused for a long time it should be washed and dried,covered and filling up with talcum powder,then place it in the room,where must be dry,shade and ventilated.The airbag should be outspread and keep flat,not be allowed pile up and stack heavy on it.
2.The place of airbag storage must be far from the hot source.
3.The airbag can’t contact with acid,alkali,grease and organic solution.
The Selection of Ship Launching Airbag
Diameter: General speaking, the diameter of airbags for ship used is Dia1.5m. If the piers’ height is a little higher, we could choose the larger diameter airbags, such like Dia1.8m or Dia2.0m; and for the Dia1.0m or Dia1.2m airbags are suitable for some smaller sized ships.
Length of Effective (Le): The Le of airbags is the length of airbag’s cylinder part, and does not include the length of head vertebral body.
(1) Ship width≤20m: In theoretical, Le of airbags Ship width (B); and if the length of airbags could not feet the ship width, airbags could be put under ships for two rows.
(2) Ship width20m: Generally speaking, airbags will be put under ship as two rows, as butt arrangement or cross arrangement.
Operating Pressure of Airbags: Less than DWT 1,000 could choose S1 Category Airbags; Larger than DWT 1,000 could choose S2 Category Airbags; S3 Category Airbags are used for the special higher working pressure requirement situation.
NO.s of Airbags (N): The numbers of airbags required is decided by the length of ships/vessels, and N is equal to the NO.s of putting under ship body (N1) plus the spare ones (N2), which is formula: N1+N2=N (N1 stands for the pieces under ships, N2 stands for the pieces of spares). The main factors to decide numbers of airbags required is ship DWT and category of airbags. (NOTE: N1=DWT / (Bearing Capacity of Unit for airbags×Le), spare airbags are decided by the fact situation.)
ship launching airbags Specifications:
Diameter | Layer | Work pressure | Diameter | Layer | Work pressure |
D=0.8M | 3 | 0.13 Mpa | D=1.5M | 3 | 0.07 Mpa |
4 | 0.17 Mpa | 4 | 0.09 Mpa | ||
5 | 0.21 Mpa | 5 | 0.11 Mpa | ||
6 | 0.25 Mpa | 6 | 0.13 Mpa | ||
7 | 0.30 Mpa | 7 | 0.15 Mpa | ||
8 | 0.33 Mpa | 8 | 0.18 Mpa | ||
D=1.0M | 3 | 0.10 Mpa | D=1.8M | 3 | 0.06 Mpa |
4 | 0.13 Mpa | 4 | 0.08 Mpa | ||
5 | 0.17 Mpa | 5 | 0.09 Mpa | ||
6 | 0.20 Mpa | 6 | 0.11 Mpa | ||
7 | 0.25 Mpa | 7 | 0.13 Mpa | ||
8 | 0.28 Mpa | 8 | 0.15 Mpa | ||
D=1.2M | 3 | 0.09 Mpa | D=2.0M | 3 | 0.05 Mpa |
4 | 0.11 Mpa | 4 | 0.07 Mpa | ||
5 | 0.14 Mpa | 5 | 0.08 Mpa | ||
6 | 0.17 Mpa | 6 | 0.10 Mpa | ||
7 | 0.20 Mpa | 7 | 0.12 Mpa | ||
8 | 0.23 Mpa | 8 | 0.14 Mpa |
Other applications of the ship airbag technology:
For ship upgrading, conversion or new/repair launching (Ship launching airbags)
For hoisting and transporting heavy goods up to 10,000 tonnes structure
Marine pneumatic rubber fender for protective purposes
Marine airbag for salvaging sunken ship or heavy immersed steel structure
Pneumatic rubber core for architecture engineering
Container for storing and transporting gas and corrosive chemical liquid and pure water for voyage
Rubber bag for ship ballast
For erecting floating bridge or pipeline
Information of the ship launching airbag:
The ship launches by the technology as follows: To inflate hoisting airbag and properly move the ship under the traction of winch and wire rope to finish launching. When the ship goes up, rolling airbag should be used firstly, and after positioning, the airbag is hoisted to cushion. The fundamental principle of ship launching and upgrading is to inflate the airbag under low pressure and bear in large area.
Marine airbag technology for upgrading and launching is a technical method that a ship finishes upgrading and launching through an airbag.
The feature of ship launching airbags
Suitable for launching at any seaside without construction of launching facilities.
Overcome the restriction upon fixed launching track of side-launch.
High strength with excellent resistance to wear and aging.
Good air tightness, high flexibility.
Well tested design and performance.
Save your time, effort, workload and investment.
Widely used by more shipyard all over the world.
Low maintenance.
Could be used repeatedly.
Our Company
Nanhai airbag is the leading manufacturer for ship aibag or ship launching airbag, supplying to shipyards & trading companies in over 6 continents for ship launching or upgrading, repairs & salvage ship .
Having passed the QMS certifications of BV and ISO 9001,ISO17357,our products have been exported to more than 40 countries and regions around the world, being widely used in the fields of ports, ocean engineering, ships and tunnels. Last but not the least, We are the unique ISO17357 international standard certified pneuamtic rubber fender manufacturer in China.
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