Double obturator valve

Details Double obturator valve Double obturator valve

2000-03-08

2001-10-02

Chambers, A. Michael (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S628000, C251S229000

Reexamination Certificate

active

06296016

ABSTRACT:

This invention relates to a valve.
For various reasons it is sometimes necessary to put valves in series i.e. one after the other in a pipeline. However for valves particularly used in larger diameter pipelines e.g. 12 inches (approximately 300 mm) and greater because of the size of associated actuators, handles and other equipment and often space is limited this is not always readily achievable.
It is an object of the present invention to overcome or at least reduce the effect of this disadvantage.
In accordance with the invention a valve comprises a body having a passageway therethrough for flow of medium, two bores intercepting said passageway, the axes of the bores extending transversely of the passageway and two obturators located one in each of the bores and each rotatable about the axis thereof between a closed position wherein said passageway is blocked and an open position wherein said passageway is unblocked, the axis of one obturator and associated bore being arranged at an angle of at least about 90° with respect to the axis of the other obturator and associated bore.
The axis of said one obturator and associated bore may be arranged at an angle of between 90° and 180° with respect to the axis of said other obturator and associated bore.
The axis of said one obturator and associated bore may be arranged at an angle of 180° with respect to the axis of said other obturator and associated bore, thus said one obturator and associated bore is inverted with respect to said other obturator and associated bore.
Preferably two drive shafts are provided one drive shaft being associated with said one obturator and the other associated with said other obturator, the axis of each drive shaft being the same as the axis of the associated obturator and the axes of the two drive shafts being substantially parallel. One drive shaft preferably extends in one direction and the other preferably in the opposite direction e.g. one extending vertically upwards and the other vertically downwards.
Two rotatable handles may be provided one handle being associated with said one obturator and the other handle associated with said other obturator, each handle being operable to rotate its associated obturator between said closed position and said open position, both handles being located on the same side of the valve.
The valve may comprise two actuators one attached to said one drive shaft through a gear system and the other actuator being attached to said other drive shaft through another gear system. The two actuators may each comprise one of two rotatable handles, both handles being located on the same side of the valve.
The axes of rotation of the two handles may be parallel.
The valve body may comprise two standard flanges each for attachment to pipe work, the longitudinal distance between the flanges being a standard distance e.g. the same as that for a valve comprising only one obturator and associated bore. Examples of relevant standards in use the oil and gas industry and setting out standard distances are API.6D, BS2080, BS5353 and ANSI.B16.10.


REFERENCES:
patent: 2024905 (1935-12-01), Bard
patent: 2043863 (1936-06-01), Nordstrom
patent: 2048975 (1936-07-01), Sproull
patent: 2058747 (1936-10-01), Wilkins
patent: 2612338 (1952-09-01), Flosdorf et al.
patent: 2690894 (1954-10-01), Blevans
patent: 3896857 (1975-07-01), Turner et al.
patent: 4275763 (1981-06-01), Fahrig
patent: 4276905 (1981-07-01), Lourdeaux
patent: 4350322 (1982-09-01), Mueller
patent: 4498498 (1985-02-01), Martinez-Vera et al.
patent: 4846212 (1989-07-01), Scobie et al.
patent: 4848398 (1989-07-01), Leach
patent: 5452677 (1995-09-01), Kirkpatrick
patent: 5669415 (1997-09-01), Trunk
patent: 5685338 (1997-11-01), Trunk
patent: 0 565 243 A1 (1993-10-01), None
patent: 829293 (1960-03-01), None
patent: 850297 (1960-10-01), None
patent: 915446 (1963-01-01), None
patent: 918020 (1963-02-01), None
patent: 1 369 885 (1974-10-01), None
patent: 2 131 129A (1984-06-01), None
patent: 2 236 829A (1991-04-01), None
patent: 2 300 693 (1996-11-01), None
patent: 2 305 713 (1997-04-01), None
patent: S50-64018 (1975-06-01), None
patent: S54-146932 (1979-10-01), None
patent: S55-88487 (1980-06-01), None
patent: S56-63178 (1981-05-01), None
patent: S58-160672 (1982-10-01), None
patent: WO 84/00795 (1984-03-01), None
patent: WO 97/13085 (1997-04-01), None
API, Specification for Pipeline Valves (Gate, Plug, Ball, and Check Valves), API Specification 6D, Twenty-First Edition, Mar. 31, 1994.
API, Specification for Pipline Valves (Gate, Plug, Ball, and Check Valves), API Specification 6D, Twenty-First Edition, Mar. 31, 1994, Supplement 1 (Dec. 1, 1996).
Taper Plug Valves Pressure Design; Christensens Valve (Brochure).
Lubricated Taper Plug Valves; Product Group; 9 Catalogue No. 184 (Brochure).
AZ Special Plug Valves With Flushing Device; AZ Armaturen (Brochure).
Nordstrom Steel Plug Valves; Nordstrom Valves, Inc. V-102-R2A (Brochures).
Super-H Pressure Balanced Plug Valve; Serck Audco Valves (Brochures).
International Search Report PCT/GB96/02338.

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