Abstract:
The present invention relates to an arrangement for containment of liquid natural gas (LNG) in a hull compartment of a marine construction, comprising a self-supporting primary barrier, a second barrier surrounding the self-supporting primary barrier, and an access space between the self-supporting primary barrier and the secondary barrier. The self-supporting primary barrier is a liquid-tight self-supporting LNG tank and is connected with the hull compartment by support devices penetrating the secondary barrier. The secondary barrier is a liquid-tight thermal insulation connected with the interior surface of the hull and is sealed to the support devices by a flexible liquid tight seal, so that the self-supporting primary barrier and the secondary barrier are separately connected with the hull compartment to prevent transfer of forces between the primary barrier and the second barrier.
Abstract:
The invention relates to a device for operating a pumping device associated with a sealed and thermally insulated tank (2); said tank (2) containing a liquefied gas (8) having a liquid phase and a vapour phase and having a multilayer structure comprising a sealing membrane (7) in contact with the liquefied gas (8) and a thermally insulating barrier (6) arranged between the sealing membrane (7) and a bearing structure (4), said thermally insulating barrier (6) comprising solid matter and a gaseous phase; said pumping device comprising a vacuum pump (16) connected to the thermally insulating barrier (6) so as to place the gaseous phase under a negative relative pressure; said method planning to control the vacuum pump (16) on the basis of a reference pressure Pc1 and of a measurement of the pressure Pi of the gaseous phase of the thermally insulating barrier (6); said method further comprising: - measuring the temperature T of the liquid phase of the liquefied gas (8); and - determining the reference pressure Pc1 by means of a relationship P c1 = f 1 (T); f 1 being an increasing monotonous function.
Abstract:
The invention relates to a partition sheet for a cargo hold for liquefied natural gas, including a first partition sheet and a second partition sheet that are stacked so as to form a double partition for a cargo hold for liquefied natural gas, wherein each partition sheet includes a first metal layer and second metal layer, and a glass fiber layer combined with the latter by being interposed and adhered between the first metal layer and the second metal layer.
Abstract:
A liquefied gas treatment system (2) according to the present invention includes a boil-off gas heat exchanger (60) exchanging heat between boil-off gas, pressurized by a boil-off gas compressor (50) and recovered along a boil-off gas supply line branching off upstream of a liquefied gas-consuming unit (20), and the boil-off gas supplied from a liquefied gas storage tank (10), wherein the boil-off gas heat exchanger cools the boil-off gas (16), recovered along the boil-off gas supply line, with the boil-off gas (16), supplied from the liquefied gas storage tank (10), or flash gas (17), supplied through a vapor recovery line.
Abstract:
The invention relates to an insulation arrangement for a liquefied gas carrying ship wherein the ship has a primary barrier for containing a liquefied gas and a hull, and where the hull is spaced from said primary barrier to define a void between the hull and primary barrier. The hull is insulated with an insulation layer, said layer comprising a plurality of individual tessellating insulation panels.
Abstract:
The present invention includes: an independent tank constituting an inner tank to store a storage material therein; at least one sandwich plate modularized and manufactured include a metal plate provided in a pair opposite to each other, the metal plates having a reinforcing material formed therebetween, and a filler filled between the metal plates, the at least one sandwich plate surrounding the outer surface of the independent tank to constitute an outer tank; and an external reinforcing member formed on the outer surface of the sandwich plate.
Abstract:
A system (1) for supplying LNG fuel is disclosed. The system includes a fuel supplying line connected from an LNG storage tank (10) to a high pressure engine (20) and a low pressure engine (30) , respectively, a pump (50) formed on the fuel supplying line, and configured to pressurize LNG outputted from the LNG storage tank (10) to high pressure, a first heat exchanger (71) formed on the fuel supplying line between the high pressure engine (30) and the pump (50), and configured to heat the LNG supplied from the pump (50), a second heat exchanger (72) formed on the fuel supplying line between the low pressure engine (30) and the LNG storage tank (10), and configured to evaporate the LNG in a liquid state supplied from the LNG storage tank (10) and a heat source supplying line configured to supply heat to the LNG by supplying glycol water to the first heat exchanger (71) and the second heat exchanger (72).
Abstract:
Offenbart ist Tank bzw. Tanksystem zur Lagerung einer kryogenen Flüssigkeit aufweisend mindestens einen Sammelbehälter mit einem oberen Bereich und einem unteren Bereich, um die kryogene Flüssigkeit zu enthalten, mindestens ein Mittel zum Ein- und Auslass von Flüssigkeiten und mindestens ein Mittel zum Ein- und Auslass von Gasen, wobei der Tank ferner mindestens eine Rahmenstruktur aus einem Wärmedämmmaterial aufweist.