Membrane type liquefied natural gas marine insulation box and its construction method
A liquefied natural gas and thin-film technology, which is applied in ship construction, ship parts, ship design, etc., can solve the problems of long construction and installation period, high water vapor transmission rate, and high water absorption rate of glass wool, so as to reduce transportation costs and reduce manufacturing costs. Process cost, overall light weight effect
Active Publication Date: 2019-05-14
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
[0007] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a thin-film type LNG ship thermal insulation box and its construction method to solve the problems of high daily evaporation rate and construction and installation period in the LNG maintenance system of the LNG ship. Long, high water absorption rate of glass wool, high water vapor transmission rate, etc.
Method used
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Embodiment 1
[0063] Such as figure 1 As shown, the composition of the film-type liquefied natural gas marine insulation box of this embodiment includes a plywood panel 1, a rigid polyurethane foam board 2, and a plywood assembly box 3; Holes 4; the assembled heat insulation box is fixedly bonded with the inner hull 6 of the ship through the viscous resin rope 5;
[0064] Such as figure 2 As shown, paste with glass cloth 7 on the drilled hole 4;
[0065] The surface of the plywood panel on the heat insulation box is covered with a dense metal film welded by invar steel or 9% nickel steel; the size of the heat insulation box is 1200mm×1000mm×530mm (length×width×thickness).
[0066] The construction method includes the following steps:
[0067] Take the unnoded part of the trunk center of birch in the frigid zone and cut it into single pieces, and then heat-press through steps such as gluing and billeting to obtain plywood, with a thickness of 12mm;
[0068] Rigid polyurethane foam board...
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A film type heat insulation box for a liquefied natural gas carrier and a construction method therefor. The film type heat insulation box comprises: a plywood (1), and a hard polyurethane foam plate (2). The heat insulation box is a one-layer heat insulation box; the upper surface of the heat insulation box is coated with a compact metal film; and the heat insulation box is directly connected to an inner bottom shell (6) of a hull by means of a tackifying resin rope (5). The construction method comprises: plate cutting, drilling, forming of a T-shaped groove, assembling, and bonding. The present invention uses an optimal assembling of the low-density hard polyurethane foam plate and the plywood, so that the daily evaporation rate of a liquefied natural gas cabin of the liquefied natural gas carrier is decreased, and the long-term service stability of a heat insulation system is improved. Meanwhile, the present invention simplifies a multiple-layer heat insulation box into a one-layer heat insulation box, thus reducing the overall weight of the heat insulation box, enlarging loading space, lowering construction, mounting and transport costs and improving transport efficiency and safety.
Description
technical field [0001] The invention belongs to the technical field of liquefied natural gas ships, in particular to a film-type heat insulating box for liquefied natural gas ships and a construction method thereof. Background technique [0002] The main component of natural gas (NG) is methane, which releases less sulfur dioxide and nitrogen oxides during combustion, and is a clean energy. Liquefied natural gas (LNG) refers to a low-temperature colorless and transparent liquid that is condensed by cooling natural gas whose main component is methane to about -163°C. Since the volume of natural gas after liquefaction is only about 1 / 600 of that in the gaseous state, it can be greatly reduced. Improve transportation efficiency. Liquefied natural gas ship is the main means of transportation of liquefied natural gas at sea. It is a high-tech, difficult and high value-added ship. The cargo maintenance system (CCS) in the liquefied natural gas ship is specially designed for stori...
Claims
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IPC IPC(8): B63B25/16B63B9/00
CPCB63B25/16B63B71/00
Inventor 张洪斌孙小伟蔡志祥韦越吴敏位元元谢燕萍陶冉
Owner SHANGHAI JIAOTONG UNIV