Triple Offset Butterfly Valve and Rotary Valves For Sever Services

• US 20130056667A1
• Filed: 08/30/2012
• Published: 03/07/2013
• Est. Priority Date: 09/01/2011
• Status: Active Grant

• Current Assignee: Shu, Jianchao
• Original Assignee: Shu, Jianchao
• Inventors: Shu, Jianchao
• Granted Patent: US 9,022,348 B2
• Time in Patent Office: Days
• US Class Current: 251/305
• CPC Class Codes: F16K 1/224 Details of bearings for the axis of rotation
• CPC Class Codes: F16K 1/2261 the sealing being arranged on the valve member
• CPC Class Codes: F16K 1/2268 Sealing means for the axis of rotation
• CPC Class Codes: F16K 27/0218 Butterfly valves
• CPC Class Codes: F16K 47/08 for decreasing pressure or noise level and having a throttling member separate from the closure member , e.g. screens, slots, labyrinths

Abstract

This invention relates to a novel rotary control valve with new joint methods and flow control mechanisms, line-reparability and fully metal seals more particularly to a triple offset butterfly valve or ball valve with those features used for on-off and flow controlling under multiple extreme conditions or in sever service; such as the integrated gasification combined cycle under high temperature and pressure, Fluid Catalytic Cracking under high temperature over 1200 F with hard diamond like catalytic particles, shale fracking process under extreme high pressure and high velocity fluid with solid particles and corrosive additives and other critical applications for products life lasting 5 to 30 years like deepsea flow control systems and nuclear power plants and for the applications of millions cycles like jet or rocket turbine engine fuel delivery systems with high velocity fuel fluid mixed with highly oxidative gas under temperature 1365 F.

Claims

1. A fluid related device comprising;

(a) A body assembly having a body including at least one flow port;

(b) At least one closure member assembly including a stem and a closure member movably positioned in said flow port;

(c) At least one seal assembly means for providing seals between said body and said closure member assembly.

2. The device of claim 1, wherein said seal assembly disposed between said flow port and said closure member including at least one seat defined by an inward conical seal surface, an outward conical seal surface and a non-seal front surface having a plurality of profiles including a non-flat surface, a flat surface and wave surface and a non-seal back surface including a plurality of profiles including a non-flat surface, a flat surface and wave surface.

3. The device of claim 2, wherein said flow port including a mating conical sealing surface engaged with said outward surface of said seat for providing seals at a closed position of said closure member, said closure member having a boss defined by a mating conical surface engaged with said inward surface of said seat for providing seals.

4. The device of claim 2, wherein said flow port including a recess defined by a mating conical surface engaged with said outward surface of said seat for providing seals, said closure member having a mating conical outward surface engaged with said inward surface of said seat for providing seals at a closed position of said closure member.

5. The device of claim 2, said flow port including a recess defined by a mating conical surface engaged with said outward surface of first said seat for seals, said closure member having a boss defined by a mating conical surface engaged with said inward surface of second said seat for seals, said mating inward surface of first said seat engaged with said outward surface of second said seat for seals at a closed position.

6. The device of claim 2, said seat constructed with a plurality of base materials including AISI-0175, Alloy 6150, Inconel 750 and 718, stainless steel 17-7, PTFE, PEEK, polymeric materials and with a plurality of surface coating materials including gold, sliver, nickel, chrome and PTFE.

7. The device of claim 1, wherein said closure member assembly including at least one joint/lock means comprising;

(a) A wedge means including at lease one active wedge part defined by a wedge surface and one passive wedge part defined by a mating wedge surface engaged with said wedge surface of said active wedge part for converting movements, said wedge means having a plurality of forms including (1) said active wedge part constructed as a lock ring defined by a conical wedge surface, said passive wedge part constructed as a retaining ring disposed in a mating cylindrical boss of said closure member having a groove defined by a mating conical wedge surface engaged with said conical wedge surface of said lock ring (2) said active wedge part constructed as a key disposed in a keyway of middle of said disc defined by a flat wedge surface, said passive wedge part constructed as a stem disposed in a stem hole between two hubs of said disc having a keyway defined by a mating flat wedge surface engaged with said flat wedge surface of said key;

(b) An eccentric means for converting rotary movements to linear movements including an active rotary part defined by at least one centric cylindrical surface, at least one eccentric annular opening having a plurality of cross sectional shapes including circle, polygon, oval and multiple curves, a combination of lines and curves and a converting part of said active wedge part engaged with said eccentric annular opening, said eccentric means having a plurality of forms including;

(1) said active rotary part constructed as a centric cylindrical lock plug disposed in a hole of said disc having an eccentric cylindrical groove, said converting part of said active wedge part constructed as a base of said lock ring engaged with said eccentric cylindrical groove of said plug (2) said active rotary part constructed as a centric cylindrical lock plug disposed in a hole extending to a slot of said keyway of said disc having a groove defined by an eccentric cylindrical surface, said converting part of said active wedge part constructed as said key disposed in said keyway having a tongue engaged with said eccentric cylindrical groove of said plug and said slot.

8. The device of claim 7, wherein said joint/lock means including a locking means having a screw and said lock plug including a driving slot on a top of said plug for operation and a screw slot extending vertically to thread hole to receive said screw for preventing said plug from rotation, said screw having a longer length than a length of said screw slot for preventing screw from failing out.

9. The device of claim 7, wherein said base of said lock ring also including a retreat hole, said disc having at lease one retreat slot for an access of said retreat hole when said lock ring at an upper position.

10. The device of claim 1, wherein said body assembly including at least one joint/lock means comprising;

(1) A wedge means including at lease one active wedge part defined by a wedge surface and one passive wedge part defined by a mating wedge surface engaged with said wedge surface of said active wedge part for converting movements, said wedge means having a plurality of forms including;

said active wedge part constructed as a lock ring defined by a conical wedge surface, said passive wedge part constructed as a retaining ring disposed in a mating cylindrical recess of said body having a groove defined by a mating conical wedge surface engaged with said conical wedge surface of said lock ring

(2) An eccentric means for converting rotary movements to linear movements including an active rotary part defined by at least one centric cylindrical surface, one eccentric annular opening having a plurality of cross sectional shapes including circle, polygon, oval and multiple curves, a combination of lines and curves and a converting part of said active wedge part engaged with said eccentric annular opening, said eccentric means having a plurality of forms including;

said active rotary part constructed as a centric cylindrical lock plug disposed in a hole of said body having a groove defined by an eccentric cylindrical surface, said lock ring having a base constructed as said converting part of said active wedge part engaged with said eccentric groove of said plug.

11. The device of claim 10, wherein said joint/lock means including a locking means including a screw and said lock plug including a driving slot on a top of said plug for operation and a screw slot extending vertically to thread hole to receive said screw for preventing said plug from rotation, said screw having a longer length than a length of said screw slot for preventing screw from failing out.

12. The device of claim 10, wherein said base of said lock ring also including a retreat hole, said body having at lease one retreat slot for an access of said retreat hole when said lock ring at an upper position.

13. The device of claim 1, wherein said seal assembly including a stem seal, said stem seal having an I ring and a pair of compression rings with a cross section of V shape, said stem having a cylindrical surface including a groove to receive said I ring, said I ring including a plurality of cross sectional shapes including circle and a polygon having two sides respectively engaged with a side of each said compression ring, said I ring including a plurality of construction methods including as an integral part of said stem and a separated part, said compress ring having a static sealing surface engaged with said I ring for seals and an outward dynamic seal surface, said outward dynamic seal surface including a plurality of profiles including a conical surface and spherical surface.

14. The device of claim 13, wherein said seal assembly including a pair packings respectively engaged with said two dynamic outward sealing surfaces of said compression rings for providing seals among said stem seal and said packings, said packing constructed with a plurality of materials including laminated metal rings, laminated metal and graphite rings, laminated graphite rings and laminated polymeric rings.

15. The device of claim 1, wherein said body assembly including at least one bearing disposed between said body and said stem, said bearing having at lease two vertical slots and at least two spring pins movably respectively disposed into said slots, said pin including a plurality of cross sectional shapes including a circular shape, circular ring shape, spiral shape and C shape.

16. The device of claim 1, wherein said body assembly including a pair of trims respectively disposed in both ends of said flow port, a left trim of said pair of trims having a left segment cylindrical ring including a flow opening extended to a spherical mating surface having multiple through holes against said closure member for throttling flows and reducing cavitations and noise, a right trim of said pair of trims having a right segment cylindrical ring including a flow opening extended to spherical mating surface having multiple through holes against said closure member for throttling flows and reducing cavitations and noise.

17. The device of claim 16, wherein said body assembly including at least two lock means, a first lock means of said two lock means for securing said trim on said body including a step bore on said body and two pin holes on said step bore in an opposite direction, said trim also including a segment step mating ring having two cylindrical mating slots in said ring disposed in said step bore of said body by means of said two pins respectively disposed between said two pin holes on said body and said two cylindrical mating slots on said ring for preventing rotation of said trim and engagement between said step bore and said step mating ring for preventing inward linear movements of said trim, a second lock means of said two lock means for securing said trims on said body including a groove between said flow port and said trim, a pair of eccentric lock rings disposed in said groove for preventing said trim from movements, each of said eccentric lock rings disposed in said groove with a clearance fit defined by an outside cylindrical surface based on one center and an inside cylindrical surface based on other center with a slot.

18. The device of claim 1, wherein said body assembly including a seat repairable body having a wedge opening, a wedge cover disposed in said opening and a cover gasket disposed between said opening and said cover for providing seals, said body also having conical outside surface and at least four thread holes, said body assembly also including a body ring having at least four bolts and a mating conical surface engaged with said conical surface of said body and a body gasket for secondary seal and secured by said bolts between said thread holes on said body and said body ring, said body assembly also including a pair of wedge support rings disposed in said body for supporting said seat by rotating one of said rings.

19. The device of claim 1, wherein said body including a plurality of styles including a flanged style, a welded end style, a wafer style, a lug style, a threaded end style and a seat repairable style.