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US 8,464,999 B2Granted
Service regulator vent
AssigneeFisher Controls International LLC
InventorJames C. Hawkins
Life of this patent
Estimating the term…
Abstract
A fluid regulating device comprises an actuator with upper and lower housing components. The upper and lower housing components are secured together at mating flanges via a plurality of fasteners. The upper housing component is formed with a vent to contain a relief valve, which exhausts fluid to the atmosphere under overpressure conditions. The upper housing component is constructed such that it does not require a pedestal or fins extending between the vent and the flange, which advantageously provides a completely unobstructed, continuous, ring-shaped flange for receiving and manipulating the fasteners during assembly and/or maintenance of the regulating device.
Claims24
A fluid regulating device, comprising:
- a control assembly comprising a piston slidably disposed on a piston axis, a control element slidably disposed on a control element axis that extends transverse to the piston axis, a control arm operably coupled between the piston and the control element, and a diaphragm operably connected to the piston for moving the piston, the control arm, and the control element in response to pressure changes across the diaphragm, the control element adapted for displacement to control the flow of a fluid through the regulating device;
- a relief valve operably associated with the control assembly and adapted to provide overpressure protection to the regulating device;
- an actuator housing defining a cavity containing at least a portion of the control assembly, the actuator housing comprising an upper housing component and a lower housing component, the upper and lower housing components each comprising a flange disposed adjacent a peripheral portion of the diaphragm;
- a plurality of fasteners securing the flanges of the upper and lower housing components together to seal the peripheral portion of the diaphragm therebetween;
- a vent defined by the upper housing component and containing the relief valve, the vent comprising an L-shaped conduit including an upright portion extending upward from a shell portion of the upper housing component and a coupling portion extending from the upright portion and defining an opening at an end thereof, the coupling portion being disposed entirely unsupported above a top surface of the flange of the upper housing component;
- a seating surface defined by the top surface of the flange of the upper housing component, against which the plurality of fasteners seat, the seating surface comprising a continuous and unobstructed ring-shaped surface providing unobstructed access to the plurality of fasteners;
- and
- a parting line carried by the upper housing component of the actuator housing as a result of manufacturing, the parting line having an L-shaped portion including a first leg extending along an outer surface of the coupling portion from the opening of the coupling portion to the upright portion, and a second leg extending along an outer surface of the upright portion from the coupling portion to the shell portion of the upper housing component.
5 more elements
A fluid regulating device, comprising:
- a control assembly comprising a piston slidably disposed on a piston axis, a control element slidably disposed on a control element axis that extends transverse to the piston axis, a control arm operably coupled between the piston and the control element, and a diaphragm operably connected to the piston for moving the piston, the control arm, and the control element in response to pressure changes across the diaphragm, the control element adapted for displacement to control the flow of a fluid through the regulating device;
- a relief valve operably associated with the control assembly and adapted to provide overpressure protection to the regulating device;
- an actuator housing defining a cavity containing at least a portion of the control assembly, the actuator housing comprising an upper housing component and a lower housing component, the upper and lower housing components each comprising a flange disposed adjacent to a peripheral portion of the diaphragm;
- a plurality of hexagonal bolts securing the flanges of the upper and lower housing components together to seal the peripheral portion of the diaphragm therebetween, each of the hexagonal bolts comprising a head seated against a top surface of the flange of the upper housing component;
- a vent extending from a shell portion of the upper housing component and containing the relief valve, the vent comprising an L-shaped conduit including an upright portion and a coupling portion that is cantilevered from the upright portion and defines an opening at an end thereof, the coupling portion disposed entirely unsupported above a top surface of the flange of the upper housing component such that the top surface of the flange comprises a continuous and unobstructed ring-shaped surface providing unobstructed access to each of the heads of the plurality of hexagonal bolts;
- and
- a parting line carried by the upper housing component of the actuator housing as a result of manufacturing, the parting line having an L-shaped portion including a first leg extending along an outer surface of the coupling portion from the opening of the coupling portion to the upright portion, and a second leg extending along an outer surface of the upright portion from the coupling portion to the shell portion of the upper housing component.
4 more elements
An actuator housing for a fluid regulating device, the actuator housing comprising:
- an upper housing component comprising a circumferential flange defining a plurality of circumferentially spaced apertures;
- a lower housing component comprising a circumferential flange defining a plurality of circumferentially spaced apertures, the apertures in the flanges of the upper and lower housing components adapted to receive a plurality of fasteners for sealingly securing a diaphragm of a control assembly of a fluid regulating device therebetween;
- a vent extending from a shell portion of the upper housing component and adapted to contain a relief valve of a fluid regulating device, the vent comprising an L-shaped conduit including an upright portion and a coupling portion that is cantilevered from the upright portion and which defines an opening at an end thereof, the coupling portion disposed entirely unsupported above a top surface of the flange of the upper housing component;
- a seating surface defined by the top surface of the flange of the upper housing component, against which the plurality of fasteners are adapted to seat, the seating surface comprising a continuous and unobstructed ring-shaped surface providing unobstructed access to the plurality of fasteners;
- and
- a parting line carried by the upper housing component of the actuator housing as a result of manufacturing, the parting line having an L-shaped portion including a first leg extending along an outer surface of the coupling portion of the vent from the opening of the coupling portion to the upright portion, and a second leg extending along an outer surface of the upright portion of the vent from the coupling portion to the shell portion of the upper housing component.
3 more elements
Dependencies are inferred from the claim text.