摘要:
There is provided an apparatus and method for estimating fluid mass in a cryogenic tank that holds a multiphase fluid comprising a liquid and a vapour. The apparatus comprises a level sensor, a pressure sensor and a computer. The level sensor provides a parameter representative of a level of the liquid. The pressure sensor provides a pressure signal representative of vapour pressure inside the cryogenic tank. The computer is operatively connected with the level sensor and the pressure sensor to receive the parameter and the pressure signal, and is programmed to determine the level from inputs comprising the parameter, to calculate a first volume of the liquid from inputs comprising the level, and to calculate a first mass of the liquid from inputs comprising the first volume and the pressure signal.
摘要:
Procédé de contrôle de la pression au sein d'un réservoir (1) cryogénique mobile, notamment un réservoir (1) monté sur une plateforme (2) mobile susceptible d'être tractée par camion, le réservoir (1) étant en acier et contenant de l'hydrogène liquide sous pression, le procédé comprenant une mesure continue ou périodique de la température au sein du réservoir (1) et, lorsque la température mesurée excède un seuil haut (Ts) de température déterminé compris en moins 140°C et moins 160°C, la pression au sein du réservoir (1) est limitée à une valeur inférieure ou égale à un seuil de pression (Pmax) déterminé compris entre 1,5 et 3 bar.
摘要:
The vessel of a heat storage and release apparatus is provided with a shell made of metallic material with an internal cavity for containing a heat storage and release device and for guiding gas-flow, a first opening through the shell for a flow of gas at high temperature and high pressure in and out of the cavity, a second opening through the shell for a flow of gas at low temperature and high pressure in and out of the cavity, and a lining of thermally insulating material covering only partially the internal surface of the cavity; the lining is located at least in the region where the first opening is located, i.e., where the temperature is higher; in this way, the temperature of the shell can be controlled. Such heat storage and release apparatus can be provided in an energy production plant as a component of an energy storage and release system to be used for compensating differences between energy produced and energy demanded.
摘要:
The invention relates to a mobile tank for a cryogenic, that is to say supercooled propellant or fuel, specifically in particular for LNG, that is to say liquid natural gas or liquid methane. The invention also relates to an aircraft having said tank and to a method for retrofitting an aircraft with tanks of said type. According to the invention, a tank for a cryogenic propellant is provided with an external structure and with a flexible, pressure-resistant, cold-resistant internal envelope (4). To retrofit an aircraft with a tank for a cryogenic propellant, a tank for kerosene is lined with a foil (2), tiles (3) composed of plastic are adhesively bonded to the foil, and a pressure-resistant internal envelope (4) is applied, specifically preferably adhesively bonded, to the tiles (3).
摘要:
A storage tank assembly for the storage of cryogenic liquids comprising a first outer tank and a second inner tank, the first and second tanks being spaced apart from one another to form an insulation space, the storage tank assembly further comprising a cryogenic liquid delivery system including an eductor located within the second inner tank so as to entrain cryogenic vapour during filling of the inner tank with cryogenic fluid.
摘要:
The present invention relates to a ship or floating support (1) for transporting or storing the liquid consisting of a liquefied gas, preferably chosen from methane, ethylene, propane and butane, cooled in a large tank, preferably a cylindrical one with polygonal cross section, which is thermally insulated and very large with at least its shortest dimension in the horizontal direction, notably its width, greater than 20 m and preferably ranging from 25 to 50 m, and a volume in excess of 10 000 m 3 , characterized in that said tank is equipped with at least one device for attenuating the movements of said liquid comprising means of displacing said liquefied gas liquid within said tank to form a horizontal current just below the free surface of said liquefied gas at least locally to a depth of at least 0.5 m, preferably at least 2 m.
摘要:
A closure is shown for an equipment sub. A closure door is carried by a sub body and movable thereto between open and closed positions for providing access to a pressure vessel. Various improvements are disclosed including a new mechanism for positioning wedge shaped arcuate segments between the door and the sub body, a retainer mechanism for guiding movement of cross bars, a split hinge adjustment mechanism for adjusting planarity and concentricity between the closure door and the sub body, an increased annular wall body thickness region surrounding the sealing surface for reducing warpage during welding, a pressure lock rod member which also engages a combination of cross bars and a crank for driving the cross bars, and a pry bar that can facilitate better manually operated leveraging of the closure door.