Teledyne Industries, Inc.

Teledyne Limited

Ot's Engineering Corporation

William B Goode

Charles Paul Lamb

A side pocket mandrel having an internal deflector to prevent a latch seated therein from being bent out into the open bore. Receptacle bore sub-assemblies and deflectors welded into slots cut in the mandrel body such that the interior faces of the welds can be coated with protective material.

Side pocket mandrel

A valve comprising a valve body (10) having inlet (14) and outlet (18) passages communicating with a valve chamber (15). A valve element (90) is movable through the valve chamber adjacent a valve seat (92) and a flow deflector ring (104) having a central opening which has discontinuous deflector surfaces (106) around a central opening separated by spaced grooves (108) arranger to disrupt flow a stream of fluid flowing between the valve element and the valve seat to prevent the formation of a vena contracta downstream from the valve seat. A plurality of sleeves (34,36) having cylindrical walls divide the valve chamber to form an entrance section (15a) and an outlet section 15b). An array of inlet bores (38) is formed in an outer sleeve (34) and an array of exit bores (40) is formed in an inner sleeve (36), each of the bores having a receiving end and a discharge end, receiving ends of bores in the array of outlet bores being spaced axially of the valve chamber relative to discharge ends of bores in the array of inlet bores. Bores in the array of inlet bores are inclined relative to bores of the array of exit bores to form a tortuous flow path from the inlet section through a plurality of axially spaced plenums (44,46,48) to the outlet section 15b) of the valve chamber (15) to minimize noise and cavitation as pressure is reduced in the valve chamber.

Valve design to reduce cavitation and noise

A valve comprising a valve body (10) having inlet (14 ) and outlet (18) passages communicating with a valve chamber (15). A valve element (90) is movable through the valve chamber adjacent a valve seat (92) and a flow deflector ring (104) having a central opening which has discontinuous deflector surfaces (106) around a central opening separated by spaced grooves (108) arranger to disrupt flow a stream of fluid flowing between the valve element and the valve seat to prevent the formation of a vena contracta downstream from the valve seat. A plurality of sleeves (34,36) having cylindrical walls divide the valve chamber to form an entrance section (15a) and an outlet section (15b). An array of inlet bores (38) is formed in an outer sleeve (34) and an array of exit bores (40) is formed in an inner sleeve (36), each of the bores having an a receiving end and a discharge end, receiving ends of bores in the array of outlet bores being spaced axially of the valve chamber relative to discharge ends of bores in the array of inlet bores. Bores in the array of inlet bores are inclined relative to bores of the array of exit bores to form a tortuous flow path from the inlet section through a plurality of axially spaced plenums (44,46,48) to the outlet section (15b) of the valve chamber (15) to minimize noise and cavitation as pressure is reduced in the valve chamber.

A side pocket mandrel is of hollow metal tubing having a cross-section that is symmetrical about an axis and in which one of the symmetrical cross-section halves reveals a smoothly continuous convex curve, comprises a first, second and third circular arc portions of different radii and different centers of gyration; the first having a radius r.sub.1, the second r.sub.2, and the third a transcending radius r.sub.3 with r.sub. 1 greater than r.sub.2 and with r.sub.3 being less than three times the sum of the radii r.sub.1, r.sub.2 and the distance between the centers of the first and second portions, but no less than one-half of such sum of r.sub.1, r.sub.2 and that distance between the centers.

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Dallas, TX, United States of America

William B Goode