Abstract:
The invention is directed to a pressure reducer device (2) for mounting on a gas cylinder, comprising: a pressure reducer (14); and a flow selector (16) fluidly connected to the pressure reducer (14), downstream of said reducer (14). The device further comprises a stepper motor (22) adapted to actuate the flow selector (16).
Abstract:
The gas for the treatment, such as nitrogen, oxygen, rare gases, a mixture of hydrocarbons or similar, is stored in a tank (1, 2). By means of a pipe-line (81, 82) provided with a flow controller (76, 77) each gas is fed into a mixing chamber (4), the outlet of which is connected to at least one storage tank (3) for the conditioned atmosphere as well as with each treatment booth (10, 11, 12) via an automatically adjusted reheating device (7, 8, 9). For local treatment the liquified gas is tempered by regulating the admission of coolant into the heat exchanger, so that the gas flow reaches the surface of the body to be treated in a homogeneous gas phase. For treatment of the entire body, a conditioned atmosphere of liquid oxygen and liquid nitrogen, mixed in a proportion corresponding approximately to the composition of normal air, is fed to the treatment booth (10, 11, 12) after regulation of the flow.
Abstract:
Un ouvrage flottant comporte une cuve étanche et thermiquement isolante (1). Une paroi porteuse supérieure (7) porte une tourelle (15, 21) destinée à faire passer des équipements de manutention de cargaison (16, 22). La tourelle comporte une paroi étanche interne formant une gaine (22) engagée à travers l'ouverture de la paroi porteuse supérieure (7) et liée de manière étanche avec la membrane d'étanchéité primaire (13) de la paroi de cuve supérieure tout autour de la gaine. Un dispositif d'échappement primaire, respectivement secondaire, permet un échappement de gaz depuis l'espace primaire, respectivement secondaire, de la tourelle. Un réservoir de gaz contenant un gaz traceur incondensable ou présentant une température de condensation inférieure à la basse température du gaz liquéfié contenu dans la cuve est relié par l'intermédiaire d'une vanne de contrôle à l'un parmi le dispositif d'échappement primaire et le dispositif d'échappement secondaire. Un détecteur de gaz apte à détecter le gaz traceur, est en communication avec l'autre.
Abstract:
A method for filling at least one buffer container (1, 2, 3) of a hydrogen filling station (100), the station (100) comprising a fluid circuit (11, 12, 13, 4, 5, 6) linked to said at least one buffer container (1, 2, 3), the circuit of the filling station (100) comprising a first end linked to at least one source of hydrogen gas (14, 15), the circuit (11, 12, 13, 4, 5, 6) comprising a second end provided with a transfer conduit (6) intended to be removably connected to a tank (8), the method being characterised in that it comprises a step (9, 10) of determining the current concentration of at least one impurity in the hydrogen in the buffer container (1, 2, 3) during the filling of same, a step of comparing said current concentration of the impurity relative to a predefined threshold concentration and, when the current concentration of the at least one impurity reaches said threshold concentration, stopping the filling of said buffer container (1, 2, 3).
Abstract:
A method for the preparation of compressed oxidant-fuel gas mixtures allowing to avoid (important) damages during filling, wherein one of the following two routes are followed: a first route which can be called a "safe method" because the flammability range is not crossed during cylinder filling. This first "safe" route takes into account the cylinder test pressure to avoid any burst; a second route which can be called an "accurate method" because minor components are first introduced in the cylinder, but in which during the addition of the last component, there is a risk of explosion, simple deflagration or detonation, since the flammability range is crossed. A safety margin is therefore added to take into account the error on flammability limit versus pressure curves. The diagrams of maximum pressure of filling to prevent accident are established in function of fuel concentration for lean mixtures and rich mixtures, as obtained from flammability limits and detonation limits versus pressure at ambient temperature. Maximum pressure is calculated from adiabatic flame temperature at constant volume and from parameters deduced from detonation theories available in the literature.
Abstract:
Systems for handling and/or dispensing hydrogen or a mixture of fuels containing hydrogen gas including refueling stations for hydrogen-powered vehicles. Pure hydrogen or various mixtures ratios of hydrogen and CNG may be dispensed. Hydrogen handling equipment may include a hydrogen generator, a pressurizing apparatus or compressor, pressure vessels, piping, valves, vent pipes, and/or a dispenser. Substantially vertical orientation of pressure vessels may reduce the amount of land required and facilitate installation in urban environments. Pressurization may take place before hydrogen generation to reduce the power required for pressurization. Safety features include enclosures and surrounding walls that lean away from the equipment. Any leaking hydrogen, fires, or explosions may be contained and/or directed upward, protecting human life and property. Systems may be shop assembled and certified.
Abstract:
A system for filling a portable cylinder with therapeutic gas, and providing therapeutic gas to a patient. Therapeutic gas delivery to a patient may be through a conserver, or may be in a continuous mode. Some embodiments of the invention may test the contents of the portable cylinder prior to filling. The specification also discloses a silent mode of operation where therapeutic gas is provided from the system by means of internal and/or external cylinders.
Abstract:
Procédé de surveillance d'une cuve étanche et thermiquement isolante (1) destinée à contenir un gaz combustible liquéfié à basse température, dans lequel une paroi de la cuve comporte une barrière thermiquement isolante (3) disposée entre la membrane d'étanchéité et la paroi porteuse, la barrière thermiquement isolante comportant des matières solides isolantes et une phase gazeuse maintenue sous une pression relative négative, le procédé comportant : obtenir un échantillon de gaz dilué par prélèvement d'un échantillon de la phase gazeuse sous la pression relative négative dans la barrière thermiquement isolante à travers une canalisation de prélèvement (11) et par ajout d'une quantité contrôlée de gaz inerte à la phase gazeuse à prélever ou ayant été prélevée, élever la pression de l'échantillon de gaz dilué jusqu'à une pression de fonctionnement d'un analyseur de gaz (25), et mesurer une concentration du gaz combustible dans l'échantillon de gaz dilué avec l'analyseur de gaz.
Abstract:
A method for filling at least one buffer container (1, 2, 3) of a hydrogen filling station (100), the station (100) comprising a fluid circuit (11, 12, 13, 4, 5, 6) linked to said at least one buffer container (1, 2, 3), the circuit of the filling station (100) comprising a first end linked to at least one source of hydrogen gas (14, 15), the circuit (11, 12, 13, 4, 5, 6) comprising a second end provided with a transfer conduit (6) intended to be removably connected to a tank (8), the method being characterised in that it comprises a step (9, 10) of determining the current concentration of at least one impurity in the hydrogen in the buffer container (1, 2, 3) during the filling of same, a step of comparing said current concentration of the impurity relative to a predefined threshold concentration and, when the current concentration of the at least one impurity reaches said threshold concentration, stopping the filling of said buffer container (1, 2, 3).
Abstract:
Procédé de remplissage d'au moins un contenant (1, 2, 3) tampon d'une station (100) de remplissage d'hydrogène la station (100) comprenant un circuit (11, 12, 13, 4, 5, 6) fluidique relié audit au moins un contenant (1, 2, 3) tampon, le circuit de la station (100) de remplissage comprenant une première extrémité reliée à au moins une source (14, 15) d'hydrogène gazeux, le circuit (11, 12, 13, 4, 5, 6) comprenant une seconde extrémité munie d'une conduite (6) de transfert destinée à être reliée de façon amovible à un réservoir (8), le procédé étant caractérisé en ce qu'il comprend une étape de détermination (9, 10) de concentration courante d'au moins une impureté dans l'hydrogène dans le contenant (1, 2, 3) tampon au cours de son remplissage, une étape de comparaison de ladite concentration courante de l'impureté par rapport à un seuil de concentration déterminé et, lorsque la concentration courante de la au moins une impureté atteint ledit seuil de concentration, un arrêt du remplissage dudit contenant (1, 2, 3) tampon.