Emergency shut-off valve

Patent metadata

Field	Value
Publication number	US-9726293-B2
Application number	US-201514685186-A
Country	US
Kind code	B2
Filing date	Apr 13, 2015
Priority date	Apr 14, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

An emergency shut-off valve includes a valve body defining an inlet, an outlet, a valve port between the inlet and the outlet, and an aperture. A valve assembly is positioned partially within the valve body and extends through the aperture. An actuator assembly is operatively coupled to the valve assembly to move the valve assembly between an open position and a closed position and includes a poppet and a rotatable shaft. The poppet is disposed within the valve body and is moveable between an open position that allows the flow of fluid through the valve body and a closed position that prevents the flow of fluid through the valve body. The shaft is coupled to the poppet and has a retaining member positioned within a slot in an arm of the poppet to prevent the poppet from being removed from the shaft.

First claim

What is claimed is:

1. An emergency shut-off valve, comprising:
a valve body defining an inlet, an outlet, a valve port between the inlet and the outlet, and an aperture;
a valve assembly positioned partially within the valve body and extending through the aperture; and
an actuator assembly operatively coupled to the valve assembly to move the valve assembly between an open position and a closed position; wherein the valve assembly comprises:
a poppet disposed within the valve body and moveable between an open position that allows the flow of fluid through the valve body and a closed position that prevents the flow of fluid through the valve body, the poppet comprising an arm having a slot formed therethrough;
a rotatable shaft coupled to the poppet, the shaft comprising a retaining member positioned within the slot of the poppet to prevent the poppet from being removed from the shaft;
a gland including a generally cylindrical body, a bore formed through the body and sized to receive the shaft, a slot formed in a first end of the body and configured to receive an end of a torsion spring, a flange extending from an outer surface of the gland, and an outer surface of a second end of the gland defining at least one arcuate surface and at least one planar surface, the at least one arcuate surface and the at least one planar surface aligning with and mating with a recess formed in a retainer secured to the valve body; and
an O-ring positioned within a recess surrounding the aperture of the valve body at an outer surface of the valve body; wherein
the flange of the gland engages the O-ring to provide a seal between the gland and the valve body.

2. The emergency shut-off valve of claim 1 , wherein:
the shaft comprises a polygonal intermediate portion, the retaining member disposed in the intermediate portion of the shaft; and
the poppet comprises a polygonal aperture configured to receive and engage the intermediate portion of the shaft.

3. The emergency shut-off valve of claim 1 , wherein the retaining member comprises at least one of a spring pin, a screw, a pin, or a clip.

4. The emergency shut-off valve of claim 1 , wherein the torsion spring includes a cylindrical portion sized to receive the shaft, a first end engaging the poppet, and a second end engaging a gland, to bias the poppet into the closed position.

5. A gland for an emergency shut-off valve, the gland comprising:
a generally cylindrical body;
a bore formed through the body and sized to receive a rotatable shaft; and
a slot formed in a first end of the body, the slot receiving an end of a torsion spring of the emergency shut-off valve; wherein
an outer surface of a second end of the gland defines at least one arcuate surface and at least one planar surface, the at least one arcuate surface and the at least one planar surface aligning with and mating with a recess formed in a retainer secured to a valve body of the emergency shut-off valve.

6. The gland of claim 5 , further comprising a flange extending from an outer surface of the body, the flange configured to engage an O-ring positioned within a recess in a valve body of the emergency shut-off valve to provide a seal between the gland and the valve body.

7. The gland of claim 5 , wherein the torsion spring includes a cylindrical portion sized to receive a rotatable shaft, a first end engaging a poppet of the emergency shut-off valve, and a second end engaging a gland, to bias the poppet into a closed position.

Assignees

• Emerson Process Man Regulator Technologies Inc

Inventors

• Jing Chen
• Feifei Ji

Classifications

• F16K31/563

  for rotating or pivoting valves · CPC title

• F16K1/20 Primary

  with axis of rotation arranged externally of valve member · CPC title

• F16K17/363

  the closure members being rotatable or pivoting (F16K17/386 takes precedence) · CPC title

• F16K17/00 Primary

  Safety valves; Equalising valves, {e.g. pressure relief valves} · CPC title

• F16K31/44

  Mechanical actuating means · CPC title