Valve seat apparatus having positive retention for use with fluid control devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-001/42
G05D-016/06
출원번호
US-0327161
(2008-12-03)
등록번호
US-8864106
(2014-10-21)
발명자
/ 주소
Durant, Tony Alan
Larsen, Samuel Harold
Schimnowski, Kenneth Roger
출원인 / 주소
Emerson Process Management Regulator Technologies, Inc.
대리인 / 주소
Hanley, Flight & Zimmerman, LLC.
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
Valve seat apparatus having positive retention for use with fluid control devices are described herein. An example valve seat apparatus includes a metallic ring and an elastomeric ring coupled to the metallic ring and having a sealing surface to sealingly engage a flow control member of the fluid co
Valve seat apparatus having positive retention for use with fluid control devices are described herein. An example valve seat apparatus includes a metallic ring and an elastomeric ring coupled to the metallic ring and having a sealing surface to sealingly engage a flow control member of the fluid control device. At least a portion of an outer surface of the elastomeric ring includes an annular lip to sealingly engage an annular recess of a body of the fluid control device.
대표청구항▼
1. A fluid control device, comprising: a valve body comprising an aperture, the aperture having a shoulder defining a first groove of the valve body and a first angled surface between the shoulder and an end of the aperture; anda valve seat comprising a positive retention for use with the fluid cont
1. A fluid control device, comprising: a valve body comprising an aperture, the aperture having a shoulder defining a first groove of the valve body and a first angled surface between the shoulder and an end of the aperture; anda valve seat comprising a positive retention for use with the fluid control device, the valve seat comprising:a metallic ring comprising a first inner circumferential surface and a first outer circumferential surface, the first outer circumferential surface comprising a first protrusion and a second angled surface, the first and second angled surfaces being non-parallel and non-perpendicular relative to an axis extending through the valve seat; andan elastomeric ring comprising a sealing surface, a second inner circumferential surface, and a second outer inner circumferential surface, the second inner circumferential surface comprising a second groove and a third angled surface, the second outer circumferential surface comprising a second protrusion and a fourth angled surface, the third and fourth angled surfaces being non-parallel and non-perpendicular relative to the axis extending through the valve seat, the sealing surface to be sealingly engaged by a flow control member of the fluid control device, the metallic ring being attached to the elastomeric ring prior to positioning the metallic ring and the elastomeric ring in the valve body of the fluid control device, the third angled surface of the elastomeric ring to matably engage the second angled surface of the metallic ring, the metallic ring disposed in an opening of the elastomeric ring and configured so that the metallic ring is not to engage the flow control member, the sealing surface to be positioned between the metallic ring and the valve body of the fluid control device prior to engagement of the flow control member with the sealing surface and during engagement of the flow control member with the sealing surface, the metallic ring to exert a radial force to the elastomeric ring to urge the first protrusion into the second groove, the second protrusion into the first groove, and the fourth angled surface to matably engage the first angled surface. 2. A fluid control device as defined in claim 1, wherein the elastomeric ring is frictionally coupled to the valve body of the fluid control device. 3. A fluid control device as defined in claim 1, wherein a surface of the metallic ring opposite the sealing surface of the elastomeric ring engages a surface of the valve body defined by the first groove. 4. A fluid control device as defined in claim 1, wherein the first groove of the elastomeric ring is disposed at approximately a midpoint of the first inner circumferential surface of the elastomeric ring between a first edge of the elastomeric ring and a second edge opposite the first edge. 5. A fluid control device as defined in claim 1, wherein the valve seat is retained within the valve body without the use of a cage. 6. A fluid control device as defined in claim 1, wherein upper and lower edges of the metallic ring are substantially aligned with respective upper and lower edges of the elastomeric ring when the metallic ring is coupled to the elastomeric ring. 7. A fluid control device as defined in claim 1, wherein a first edge of the metallic ring is substantially flush relative to a first edge of the sealing surface of the elastomeric ring. 8. A fluid control device as defined in claim 7, wherein a second edge of the metallic ring is substantially flush relative to a second edge of the elastomeric ring opposite the sealing surface. 9. A fluid control device as defined in claim 1, wherein the first protrusion is positioned between an upper edge and a lower edge of the metallic ring. 10. A fluid control device as defined in claim 1, wherein the end of the aperture comprises a curved surface. 11. A fluid control device as defined in claim 10, further comprising a chamfered portion adjacent the second outer circumferential surface and opposite the sealing surface, the chamfered portion to slidably engage the curved surface of the end to facilitate the second protrusion of the elastomeric ring being received by the first groove of the valve body. 12. A valve seat apparatus having a positive retention for use with a fluid regulator, comprising: a substantially rigid support ring coupled to a substantially resilient sealing ring, the rigid support ring comprising a first inner surface and a first outer surface, the first outer surface comprising a first protrusion, the resilient sealing ring comprising a second inner surface, a second outer surface, and a sealing surface, the second inner surface comprising a first recess, the second outer surface comprising a second protrusion and a chamfered portion, the chamfered portion adjacent the second outer surface and opposite the sealing surface, the sealing surface to be engaged by a valve plug of the fluid regulator, the sealing surface being substantially flush with an edge of the rigid support ring when the rigid support ring and the resilient sealing ring are positioned in a valve body of the fluid regulator, the first recess to receive the first protrusion to couple the rigid support ring and the resilient sealing ring, the chamfered portion to slidably engage a curved portion adjacent an opening of the valve body to facilitate the second protrusion being received within a second recess of the valve body, when the valve seat apparatus is positioned within the valve body, the rigid support ring to exert an outward radial force to the resilient sealing ring to urge the first protrusion into the first recess and the second protrusion into the second recess, wherein the second outer surface comprises a first angled surface non-parallel and non-perpendicular relative to an axis extending through the valve seat apparatus when the valve seat apparatus is positioned in the valve body, the first angled surface to matably engage a second angled surface of the valve body when the rigid support ring and the resilient sealing ring are positioned in the valve body. 13. A valve seat apparatus as defined in claim 12, wherein the second protrusion is to be press fit into the second recess of the valve body of the fluid regulator. 14. A valve seat apparatus as defined in claim 12, wherein the resilient sealing ring substantially surrounds the rigid support ring. 15. A valve seat apparatus as defined in claim 12, wherein the rigid support ring comprises a metallic ring and the resilient sealing ring comprises an elastomeric ring. 16. A valve seat apparatus as defined in claim 12, wherein the first recess in the resilient sealing ring is disposed adjacent a midpoint of the resilient sealing ring between a first edge of the resilient sealing ring and a second edge of the resilient sealing ring opposite the first edge. 17. A valve seat apparatus as defined in claim 12, wherein a height of the rigid support ring along an axis extending through the valve seat apparatus is substantially equal to a height of the resilient sealing ring along the axis extending through the valve seat apparatus. 18. A valve seat apparatus as defined in claim 12, wherein the second protrusion forms a first lip to directly engage a second lip formed by the second recess of the valve body of the fluid regulator. 19. A valve seat apparatus as defined in claim 12, wherein the first outer surface comprises a third angled surface and the second inner surface comprises a fourth angled surface matably engaged to the third angled surface, the third and fourth angled surfaces being non-parallel and non-perpendicular relative to an axis extending through the valve seat apparatus. 20. A fluid regulator, comprising: a valve body comprising an inlet, an outlet, an aperture positioned between the inlet and the outlet, and a curved portion adjacent an opening of the aperture, the aperture comprising a shoulder to define a first groove; anda valve seat disposed within the aperture of the valve body, the valve seat comprising:a first ring-shaped portion comprising a first inner surface and a first outer surface, the first outer surface comprising a first protrusion; anda second ring-shaped portion that surrounds the first ring-shaped portion to be sealingly engaged by a movable valve plug, the second ring-shaped portion comprising a second inner surface, a second outer surface, a sealing surface, and a chamfered portion, the second outer surface comprising a second protrusion to engage the shoulder and to be received by the first groove to retain the valve seat relative to the valve body, the chamfered portion to slidably engage the curved portion adjacent the opening of the aperture to facilitate positioning the first and second ring-shaped portions within the valve body, the second inner surface comprising a second groove to receive the first protrusion of the first ring-shaped portion, the first ring-shaped portion being disposed in an opening of the second ring-shaped portion, the sealing surface to be sealingly engaged by the movable valve plug when the valve seat is retained relative to the valve body, the first ring-shaped portion to exert a radial outward force to the second ring-shaped portion to urge the first protrusion into the second groove and the second protrusion into the first groove, the second outer surface further comprises a first angled surface and the valve body comprises a second angled surface, the first and second angled surfaces being non-parallel and non-perpendicular relative to an axis extending through the valve seat, the first and second angled surfaces to matably engage when the valve seat is retained relative to the valve body. 21. A fluid regulator as defined in claim 20, wherein the first ring-shaped portion comprises a metallic ring and the second ring-shaped portion comprises an elastomeric ring. 22. A fluid regulator as defined in claim 20, wherein a surface of the first ring-shaped portion opposite the sealing surface frictionally engages the shoulder of the valve body to retain the valve seat in the valve body. 23. A fluid regulator as defined in claim 20, wherein the sealing surface is positioned between the first ring-shaped portion and the valve body of the fluid regulator prior to the sealing surface being engaged with the movable valve plug and during engagement of the movable valve plug with the sealing surface. 24. A fluid regulator as defined in claim 20, wherein the first outer surface comprises a third angled surface and the second inner surface comprises a fourth angled surface that is to matably engage to the third angled surface, the third and fourth angled surfaces being non-parallel and non-perpendicular relative to an axis extending through the valve seat.
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