Sealing arrangement for a down hole valve

Details Sealing arrangement for a down hole valve Sealing arrangement for a down hole valve

E - Fixed Constructions

21

B

E21B 34/12 (2006.01)

Patent

CA 2758720

The present invention regards a sealing arrangement for a valve, comprising a valve element (3) provided with a sealing element (4), arranged to be abutting a valve seat (2) in a closed state of the valve. The valve element (3) comprises at least two parts, a first and second part (31,32), each comprising an abutting surface (310,320), which abutting surfaces (310,320) are arranged facing each other and to abut against corresponding sealing element surfaces (41,42) of the sealing element (4), and whereof at least one part (31) of the valve element (3) is being arranged to be moveable relative another part (32) of the valve element (3) and the at least one part (31) of the valve element (3) comprises a pressure surface (311) exposed to a surrounding fluid in a closed state of the valve giving pressure on the sealing element (4) responsive to the pressure in the surrounding fluid.

La présente invention concerne un aménagement d'étanchéité destiné à une soupape, comprenant un élément soupape (3) pourvu d'un élément d'étanchéité (4), agencé pour être contigu à un siège de soupape (2) dans un état fermé de la soupape. L'élément soupape (3) comprend au moins deux parties, une première et une seconde partie (31,32), comprenant chacune une surface contiguë (310,320), lesdites surfaces contiguës (310,320) étant agencées face à face et pour buter contre des surfaces d'élément d'étanchéité correspondantes (41,42) de l'élément d'étanchéité (4). Au moins une partie (31) de l'élément soupape (3) est agencée pour être mobile par rapport à l'autre partie (32) de l'élément soupape (3) et la ou les parties (31) de l'élément soupape (3) comprennent une surface de pression (311) exposée à un fluide environnant dans un état fermé de la soupape exerçant une pression sur l'élément d'étanchéité (4) en réponse à la pression présente dans le fluide environnant.

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