Abstract:
본 발명은 내부 고압을 유지할 수 있을 뿐만 아니라, 공간의 효율성과 무게를 줄일 수 있도록 곡면이 조합된 곡면 조합 각형 압력탱크에 관한 것으로, 평판부재와 곡면부재를 연결하여 형성하되, 마주보는 평판부재를 연결하는 인장부재를 복수 개 배열하되, 평판부재와 곡면부재의 연결부위에 응력 완충부가 형성되어 내압을 유지할 수 있는 평면과 곡면이 조합된 압력 탱크에 관한 것이다.
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 secondary barrier surrounding the self-supporting primary barrier, and an access space between the self-supporting primary barrier and the secondary barrier, wherein 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 nd 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 secondary barrier.
Abstract:
The invention regards a system for support of a vertical cargo tank 4, 40 resting on an insulation layer 15 against the hull of a vessel 41. Vertical forces are supported through the base of the tank. Horizontal forces are supported by support point pairs 8. These pairs are designed to direct applied forces generally through the middle of the shell 23 of the tank in order not to apply bending moment to the shell of the tank. The base of the tank is flexible to generally distributed transferring forces from the tank directly to the bottom 7 of the vessel in order not to apply bending moment to the shell of the tank nor to the bottom of the vessel.
Abstract:
Flexibler Innentank für die Tanks eines Tankers, insbesondere eines Produktentankers mit einer eingelegten, als Innentank ausgebildeten faltbaren Folie, wobei der Innentank durch einen Kraftimpuls zum Einfalten in vorher bestimmter Form veranlasst werden kann.
Abstract:
A fuel tank construction is suited to use on waterborne vehicle (20). The waterborne vehicle is provided with plural cargo compartments (13), a bridge and two side fuel tanks (11) below the bridge. This fuel tank construction includes a tank (21) provided between cargo compartments (13) and side fuel tanks (11) and connected with the side fuel tanks (11) to communicate with each other. This construction makes the fuel of each tanks be communicated with each other. It not only can omit the pipeline between tanks, but also can increase the reserve fuel quantity of the waterborne vehicle.
Abstract:
An apparatus and method for changing the volume of the watertight hull of a ship in the light or no cargo condition to achieve the required ballast drafts. At least one trunk extending longitudinally from a first end at a bow of the ship to a second end at a stern of the ship. The first and second ends of the trunk connectible to the water surrounding the ship by operation of an inlet valve and an outlet valve adjacent each end. When in the light condition, or no cargo condition, the valves at each end of the trunk or trunks are moved to an opened position to reduce the volume of the watertight hull in order to achieve the desired ballast draft. While the ship is in motion, sufficient pressure differential exits between the bow and the stern of the ship to exchange the volume of water in the trunks over a period of time. Preferably, the fluid flow through the trunks exchanges the water at least approximately every hour when the ship is moving at normal speed.
Abstract:
In order to reduce risks of bio-contamination being transmitted in ballast water, ballast water in a ballast tank is subjected to copper ions of a concentration such as to render a significant proportion of marine organisms non-viable. The treatment is carried out using copper or copper clad anodes to which current is impressed.
Abstract:
A maritime vessel (10) is disclosed. The maritime vessel (10) includes a hull (12) and at least one cargo tank (14) associated with the hull (12) and having a multi-layered side wall construction (52). The side wall construction (52) includes a first layer (54) providing a corrosion barrier for the cargo tank (14), a second layer (56) providing structural integrity for the cargo tank (14), a third layer (58) providing impact energy absorption and buoyancy properties for the cargo tank, and a fourth layer (60) providing fire-resistant properties for the cargo tank (14).
Abstract:
A method and apparatus for treating ship ballast water before it is discharged into coastal waters. The ballast water may contain harmful non-indigenous microorganisms. Before discharge, the ballast water is oxygenated and deoxygenated to reduce the populations of anaerobic and aerobic microorganisms, respectively. If anaerobic microorganisms are no concern, the oxygenation step can be eliminated. The apparatus includes a vacuum chamber (34) for deoxygenating the ballast water containing aerobic microorganisms. The vacuum chamber (34) contains an internal agitator (36) for agitating the ballast water under a vacuum in the chamber (34) for a first period of time to remove dissolved oxygen from the ballast water. The agitator may be replaced by a Weir-type system (42) in which a series of vertical plates are placed in such a manner that they form a line of plates that are ever decreasingly shorter from an in-flow (27) to an out-flow (45) of the vacuum chamber (34).