Method of and apparatus for pressurizing gas flowing in a...

F - Mech Eng,Light,Heat,Weapons – 01 – K

Patent

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F01K 23/10 (2006.01) F04D 25/04 (2006.01)

Patent

CA 2538185

The present invention is directed to auxiliary apparatus for augmenting the pressure head of a gas flowing in a pipeline (14) that may be provided by at least one gas turbine (16) running a first pressure augmenting means (12), said auxiliary apparatus comprising: a vapor turbine (28) operatively connected to a second pressure augmenting means (24); first connection means (31) for providing fluid communication between said pipeline and said second pressure augmenting means; second connection means (2) for providing fluid communication between said first pressure augmenting means and said second pressure augmenting means; and heating means (32) for vaporizing a working fluid of said vapor turbine. In one embodiment, a bypass means for said pipeline having a bypass conduit (48B) and shut-off valve system (44B) are provided for connecting said first pressure augmenting means to the downstream portion of said pipeline via a bypass conduit. In a further embodiment, the vaporizer of the working fluid utilizes the heat of an intermediate fluid. Furthermore, in accordance with the present invention, a method is provided for augmenting the pressure head of a gas flowing in a pipeline for transporting natural gas in a natural gas pipeline transmission system.

L'invention se rapporte à un appareil auxiliaire permettant d'augmenter la charge de pression d'un gaz circulant dans une canalisation qui peut être fourni par au moins une turbine à gaz faisant fonctionner un premier moyen d'augmentation de pression. Cet appareil auxiliaire comprend : une turbine à vapeur reliée opérationnellement à un deuxième moyen d'augmentation de pression ; un premier moyen de connexion afin de fournir une communication fluidique entre la canalisation et le deuxième moyen d'augmentation de pression ; un deuxième moyen de connexion afin de fournir une communication fluidique entre le premier moyen d'augmentation de pression et l deuxième moyen d'augmentation de pression ; et un moyen de chauffage afin de vaporiser un fluide thermodynamique de la turbine à vapeur. Dans un mode de réalisation, un moyen de dérivation destiné à la canalisation et doté d'un conduit de dérivation et un système de robinet d'arrêt permettent de relier le premier moyen d'augmentation de pression de la partie avale de la canalisation par un conduit de dérivation. Dans un autre mode de réalisation, le vaporisateur du fluide thermodynamique utilise la chaleur d'un fluide intermédiaire. De plus, un procédé selon l'invention permet d'augmenter la charge de pression d'un gaz circulant dans une canalisation afin de transporter du gaz naturel dans un système de transmission par canalisation de gaz naturel.

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