Shipyard Use Rubber Launching Airbag for Ship Launching and Salvage
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Ship launching airbags are to be constructed of a cylindrical body and two conical heads (one at each end). Ship launching airbags with lots of advantages, such as easy to operate, time saving, saving investment safety, etc.
Major Strengths of Ship Launching Airbags:
High level of safety: Equipped with a reliable safety valve, our airbags can stand the maximum pressure up to 4 times that of the operating pressure.
Good air tightness: Pressure decreases less than 10% for a period of 24 hours.
Long lifespan: It is guaranteed that our airbags can sustain their designed operating pressure for 3 years.
Specification
1. Structure
2. Diameters: 0.8 m - 2.0 m or customized.
3. Length: 6 m - 20 m or customized.
4. Loading Capacity: about 10 T/M to 40 T/M.
5. Grades:
Ordinary airbags - 3, 4 or 5 layers of synthetic-tire-cord.
High bearing capacity airbags - 6, 7 or 8 synthetic-tire-cord.
Super high bearing capacity airbags - 9, 10 or more layers of synthetic-tire-cord.
6. Accessories: Pull ring, iron airlock, tee joint, pressure gauge, ball valve, hose joint etc.
7. Technical Data of Ship Launching Airbags
Model
Diameter
(m)Initial pressure
(KPa)Rated working pressure,
Pe (KPa)Bearing capacity (kN/m)
Minimum burst pressure (KPa)
QP3
0.8
25
130
114
390
1.0
18
100
110
300
1.2
15
85
112
260
1.5
13
70
115
210
QP4
0.8
35
170
149
510
1.0
25
130
143
390
1.2
20
110
145
330
1.5
16
90
148
270
1.8
14
80
158
240
QP5
0.8
48
210
184
630
1.0
35
170
186
510
1.2
28
140
185
420
1.5
20
110
181
330
1.8
16
90
178
270
QP6
1.0
45
200
219
600
1.2
32
165
217
490
1.5
25
130
215
390
1.8
20
110
218
330
Note:
1. Rated working pressure:±5%.
2. Compress deformation: ±2%.
3. Bearing capacity: one meter airbag at a deformation rate of 70%, internal pressure equivalent to the rated pressure value of Pe.
9. Rubber Material Test:
No.
Test item
Required value
Test method
1
Tensile Strength, MPa
≥ 18
ISO37
2
Elongation at break, %
≥ 400
ISO37
3
Hardness, shore A
60±10
ISO7619-1
4
Tear Strength N/cm
≥ 400
ISO34-1
5
Compression set, % (70 ºC ± 1 ºC, 22 h)
≤ 30
ISO815-1
6
After thermal aging at
(70 ºC, ±1 ºC, 96 h)Holding of pull lengthening,%
≥ 80
ISO188
7
Holding of elongation at break,%
≥ 80
ISO188
8
Change of hardness, hardness
≤ 8
ISO7619-1
9
Static ozone aging at 40 ºC*96 h,
{ozone concentration( 50±5)*10}No crack
ISO1431-1
10. Reinforcing Material: the warp should be (90±5) cord per 100 mm in width, and the breaking strength shall be more than 205 N per cord.
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11. Appearance: The appearance of an air bag shall be smooth, glossy and without blemish such as crack, blister, delamination pits or impurities.
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12. Dimensional Tolerances:
The length and diameter of an airbag shall be measured with the rated working pressure and be within ±3%.
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13. Ship Launching Airbags Performance:
D
(M)(4-5 layers)
(6-8 layers)
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Initial pressure
(MPa)Working pressure
(MPa)Initial pressure
(MPa)Working pressure
(MPa)Â
Â
1.0
0.14 - 0.16
0.12 - 0.14
0.22 - 0.26
0.20 - 0.24
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1.2
0.12 - 0.14
0.10 - 0.12
0.20 - 0.24
0.17 - 0.22
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1.5
0.10 - 0.12
0.08 - 0.10
0.15 - 0.20
0.13 - 0.18
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1.8
0.08 - 0.10
0.07 - 0.09
0.13 - 0.16
0.11 - 0.14
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2.0
0.07 - 0.09
0.06 - 0.08
0.12 - 0.15
0.10 - 0.13
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