Abstract:
A liquid containment system for a seafaring vessel. The liquid containment system includes a tank having an at least partially non-planar upper portion. The upper portion of the tank contains a substantial portion of the liquid therein and reduces the free surface area associated with the liquid. The upper portion of the tank extends above the horizontal deck of the vessel, but still allows sufficient deck space for supporting various required equipment. In one embodiment, the liquid containment system is a membrane tank designed to receive and hold liquefied natural gas ("LNG").
Abstract:
The present invention concerns a metal membrane for a low-temperature-fluid storage tank wherein horizontal and vertical creases are formed and both creases intersect each other. In the intersection of the creases, a bidirectional elastic member connected to each crease is formed so that the creases can be horizontally and vertically elastic. The bidirectional elastic member protrudes and is shaped like either a pyramid, a dome or a cross. Each metal membrane is welded into a unit panel and the edge of each metal membrane is welded with the common edge of another adjacent metal membrane to keep a cargo warehouse air-tight, and ultra-low-temperature LNG is stored inside the cargo warehouse, so when the metal membrane contracts due to thermal deviation, the present invention reduces plane rigidity and, at the same time, equalizes plane rigidity of two intersecting directions. Accordingly, durability is increased, air-tightness is maintained and storage of low-temperature liquid is stabilized, regardless of extreme thermal deviation. Furthermore, fabrication of the storage tank is improved because the present metal membrane is easily clamped by a clamping unit of a welding robot or a transfer device.
Abstract:
The present invention provides a cryogenic container (10) comprising walls (20) and a base (30), said walls comprising: a first liquid barrier layer (50); a second liquid barrier layer (100); one or more spacer elements (150), disposed between the first and second liquid barrier layers (50, 100), to separate the first and second liquid barrier layers (50, 100), thereby providing an annulus (200); one or more fluid vents (250), in direct fluid communication with the annulus (200) for venting fluid from the annulus (200), wherein at least one of the vents (250) is connected to a pressure differential device (320); sealing means (260) to contain the annulus (200); a pressure measuring device connected to the annulus for monitoring the pressure in the annulus over time; and a comparator for comparing at least two pressure measurements from the pressure measuring device.
Abstract:
Advantages such as reduced emissions of NOx can be achieved if engines are fuelled with mixtures of gaseous fuels such as hydrogen and natural gas. It is also desirable to store the gaseous fuels separately so that the fuel mixture ratio can be changed responsive to engine operating conditions. However, compared to liquid fuels, a problem with storing gaseous fuels is that they generally require larger storage volumes to hold an equivalent amount of fuel on an energy basis. There are also obstacles to storing some gaseous fuels such as hydrogen in liquefied form because of the energy required to liquefy them and the extremely low temperatures needed to store such gaseous fuels in liquefied form. The invention relates to an apparatus for increasing the storage density of gaseous fuels such as hydrogen by storing them in gaseous form at high pressures and at sub-ambient temperatures. An apparatus is provided for separately storing a first gaseous fuel and a second gaseous fuel. A first vessel defines a first thermally insulated space for holding the first gaseous fuel in a liquefied form. A second thermally insulated space that can hold the second fuel is disposed within the first vessel. The second thermally insulated space is separated from the first thermally insulated space by a thermally conductive fluid barrier. The second gaseous fuel liquefies at a lower temperature than the first gaseous fuel, whereby the second gaseous fuel can be stored within the second thermally insulated space in a gaseous form at a sub-ambient temperature.
Abstract:
The present invention relates to a vessel for dispensing and recovering of technical and medical gases and system for delivery and recovery of technical and medical gases.
Abstract:
A method and an installation for alternating storage of CO 2 and natural gas in a way that ensures minimal mixture of the gases, is described. CO 2 and natural gas are alternately stored in a tank installation comprising a plurality of tanks connected in series, where CO 2 is always filled and emptied through a first tank in the series of tanks, and where natural gas always is filled and emptied through a last tank in the series of tanks.
Abstract translation:描述了以确保气体的最小混合的方式交替存储二氧化碳和天然气的方法和装置。 CO 2和天然气交替地储存在包括串联连接的多个罐的罐装置中,其中CO 2总是通过一系列罐中的第一罐填充和排空,并且天然气总是通过最后一个罐被填充和排空 在一系列的坦克。
Abstract:
An electrochemically active hydrogen diffusion barrier which comprises an anode layer, a cathode layer, and an intermediate electrolyte layer, which is conductive to protons and substantially impermeable to hydrogen. A catalytic metal present in or adjacent to the anode layer catalyzes an electrochemical reaction that converts any hydrogen that diffuses through the electrolyte layer to protons and electrons. The protons and electrons are transported to the cathode layer and reacted to form hydrogen. The hydrogen diffusion barrier is applied to a polymeric substrate used in a storage tank to store hydrogen under high pressure. A storage tank equipped with the electrochemically active hydrogen diffusion barrier, a method of fabricating the storage tank, and a method of preventing hydrogen from diffusing out of a storage tank are also disclosed.
Abstract:
The invention concerns a device for storing pressurised fluid and/or reactors generating pressurised fluids, in particular for motor vehicles, comprising a tank having one or several storage and/or reactor compartments, further including an outer casing (14) which encloses at a distance said tank (1), and spacers forming supports (18, 28), placed in the gap separating the tank from the outer casing and whereof the inner end parts are respectively supported in hollow parts (3, 5) provided in the two opposite surfaces (2a, 2b) of the tank and the outer ends are supported against the inner surface of the outer casing.
Abstract:
The invention relates to a reservoir (1) for containing a fluid under pressure and which can be accommodated in a compartment which is comprised of parallelepiped volumes. The inventive reservoir (2) consists of at least two opposing arched walls, (12) whereby the edges of said walls curve inwards towards the inside of the reservoir according to a substantially arc shaped profile, in addition to a reinforcement (9) which is provided with a seat (15) at each end, whereby said seat is bellmouthed according to the same arc shaped profile as that of the shaft (12) so that it can be adjusted inside the corresponding shaft of each of the two walls (2) that are disposed opposite to the reservoir and maintain the distance between both walls. The seat (15) of the reinforcements (9) is applied to a portion of the shaft (12) in which it is inserted. The invention can be used with LPG vehicles.
Abstract:
A grid stiffened structure which includes a wall which extends in a direction transverse relative to a plane and an elongated rib connected along an elongated dimension of the rib to the wall such that the elongated rib extends along the wall and forms an angle with an axis which extends in a direction perpendicular to the plane. The elongated rib defines a free sidewall which extends from the wall positioned on a first side of the elongated rib and extends in a direction about the elongated rib and transverse to the elongated dimension to the wall positioned on a second side of the elongated rib. The wall and the elongated rib are constructed of a plurality of layers of material which extend in a direction transverse to the axis.