Choke unit
OwnerKurt Stollinventor
Life of this patent
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Abstract
In an adjustable choke a restricted choke fluidway takes the form of a groove in the axial face of a plate sealingly resting against a fixed plate, the groove having a cross-section changing along its length. Fluid is let into one end of the groove through the grooved plate and out through a port in the face of the fixed plate. By turning the grooved plate, the length of groove between the two ports is changed so that the choking effect is changed.
Claims12
In a choke apparatus for gases having a housing, an inlet duct in said housing and an adjustment system for changing the choking effect, said system communicating with an outlet opening, the improvement comprising wherein said adjustment system includes:
- (a) a rotatable adjustment plate, a shaft able to be turned from without said housing and having said plate keyed thereon,
- (b) means defining an outlet duct in communication with said outlet opening, one side of said adjustment plate facing said outlet duct and having formed therein a groove extending less than 360.degree. around the axis of rotation of said plate, said groove having a cross-section which changes in area along its length, and
- (c) a fixed cover plate covering said side of said adjustment plate with said groove, said cover plate having an outlet hole which is aligned with said groove and communicates with said outlet duct, said plate with said groove being able to be rotated from a starting position with the lowest choking effect to a position with the largest choking effect, the end of said groove with the largest cross-section communicating with an inlet opening in said adjustment plate which by way of an inlet space in said housing communicates with said inlet duct.
Dependencies are inferred from the claim text.