Bellows valve

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 43/12 (2006.01)

Patent

CA 2688089

The present invention relates to a valve device comprising an external structure with a longitudinal axis and a valve seat, and a valve body mounted movably inside the external structure. The valve device comprises a first bellows device permitted to be moved in a substantially radial direction, in fluid connection with a first fluid, and hydraulically connected to a second bellows device permitted to be moved in a substantially axial direction. The second bellows device is connected to a first part piston cooperating with a second part piston, thereby giving the second part piston an oppositely directed movement relative to the first part piston, which thereby moves the valve body relative to the valve seat. The invention also relates to a method for operation of a valve device and the use thereof.

L'invention concerne une soupape comprenant une structure extérieure ayant un axe longitudinal et un siège de soupape, ainsi qu'un corps de soupape monté de manière mobile à l'intérieur de la structure extérieure. La soupape comprend un premier soufflet qui peut être déplacé dans une direction sensiblement radiale, en liaison fluidique avec un premier fluide, et qui est relié hydrauliquement à un second soufflet pouvant être déplacé dans une direction sensiblement axiale. Le second soufflets est relié à un piston de première partie coopérant avec un piston de seconde partie, donnant ainsi au piston de seconde partie un mouvement dirigé de manière opposée par rapport au piston de première partie, ce qui déplace ainsi le corps de soupape par rapport au siège de soupape. L'invention concerne également un procédé utilisé pour actionner une soupape et l'utilisation de celle-ci.

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