Method and apparatus for protection of compressor modules...

F - Mech Eng,Light,Heat,Weapons – 04 – D

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F04D 29/12 (2006.01) E21B 43/01 (2006.01)

Patent

CA 2656027

A method for protection of compressor modules against undesirable influx of contaminated gas, comprising a pressure housing (3) which by means of one of more sealing elements (4) is generally divided into a first compartment (8) equipped with a compressor (2) and a second compartment (7) equipped with a gas-filled motor (1), the compressor and the motor being drivably connected to each other by at least one shaft (9), is distinguished by protecting the second compartment (7) with motor (1) against direct influx of contaminated gas from the first compartment (8) with compressor (2) by means of compressed gas that is supplied from a withdrawal point (13) at the first or intermediate stage of the compressor, or from the compressor outlet (16), and by introducing the compressed gas directly into the seal (4) or in between two or more seals so as to flow through the at least one seal (4) back to the first compartment (8). The invention also relates to an apparatus for use in connection with the method.

L'invention concerne un procédé permettant de protéger des modules de compresseurs contre l'afflux indésirable de gaz contaminés, qui comprend un boîtier sous pression (3) qui, au moyen d'un ou de plusieurs éléments d'étanchéité (4), est généralement divisé en un premier compartiment (8) équipé d'un compresseur (2) et un second compartiment (7) équipé d'un moteur rempli de gaz (1), le compresseur et le moteur étant reliés l'un à l'autre par entraînement par au moins un arbre (9), se caractérise en ce qu'il permet de protéger le second compatiment (7) avec moteur (1) contre l'afflux direct de gaz contaminés provenant du premier compartiment (8) avec compresseur (2) au moyen de gaz comprimés fournis par un point de retrait (13) au premier étage ou à l'étage intermédiaire du compresseur, ou à partir de la sortie (16) du compresseur, et par introduction des gaz comprimés directement dans l'élément d'étanchéité (4) ou entre deux ou plusieurs éléments d'étanchéité de façon à traverser lesdits éléments d'étanchéité (4) pour revenir au premier compartiment (8). L'invention concerne également un appareil à utiliser en liaison avec ce procédé.

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