| 摘要 |
PURPOSE: The internal pores of an adhesive layer are exhausted by the pressure successively added with a first, a second, and a third sub airbag. The pores do not exist inside the hardened adhesive layer. CONSTITUTION: A secondary barrier pressing apparatus of an LNG(Liquefied Natural Gas) storage tank comprises an airbag unit(100), an air supply(200), a regulator unit(300), and a heating pad(400). The airbag unit is arranged in a sub secondary barrier(30). The air bag unit comprises a plurality of sub airbags(110,120,130). The air supply is connected to each the sub airbag. The air supply supplies the air to each the sub air bag. The regulator unit is arranged to the air supply between each the sub airbag. The regulator unit controls the internal pressure of a plurality of sub airbags to adjust amount of the air provided to each sub airbag.
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