IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0431697
(2012-03-27)
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등록번호 |
US-9097364
(2015-08-04)
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발명자
/ 주소 |
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출원인 / 주소 |
- FISHER CONTROLS INTERNATIONAL LLC
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대리인 / 주소 |
Marshall, Gerstein & Borun LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
9 |
초록
▼
A seat ring for a control valve has a valve body defining an inlet, an outlet, and a gallery. The seat ring includes an annular body and a flow separator. The annular body is adapted to he disposed in the gallery of the valve body and includes an interior sidewall defining a port for accommodating f
A seat ring for a control valve has a valve body defining an inlet, an outlet, and a gallery. The seat ring includes an annular body and a flow separator. The annular body is adapted to he disposed in the gallery of the valve body and includes an interior sidewall defining a port for accommodating fluid flow through the gallery. The flow separator is disposed within the port and includes a flow straightening portion defining a plurality of separate passageways. Each of the plurality of separate passageways has a hydraulic diameter and a length that is larger than the hydraulic diameter. As such, the passageways separate the flow of fluid through the port into a plurality of separate flow paths to interrupt turbulence adjacent to the port.
대표청구항
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1. A seat ring for a control valve having a valve body, a valve cage, and a control member disposed within the valve body for controlling the flow of fluid through the valve body, the valve body defining an inlet, an outlet, a gallery, and a flow path extending from the inlet to the outlet via the g
1. A seat ring for a control valve having a valve body, a valve cage, and a control member disposed within the valve body for controlling the flow of fluid through the valve body, the valve body defining an inlet, an outlet, a gallery, and a flow path extending from the inlet to the outlet via the gallery, and the control member comprising a stem and a valve plug coupled to the stem, the seat ring comprising: an annular body adapted to be disposed in the gallery of the valve body, the annular body including a retaining portion and an interior sidewall, the retaining portion for being fixed to the valve body, the retaining portion adapted to be directly contacted by the valve cage to assist with maintaining the annular body in the gallery of the valve body, the interior sidewall defining a port for accommodating fluid flow through the gallery, and the interior sidewall defining a seating surface, the seating surface adapted to be directly contacted by the valve plug when the control member is in a closed position; anda flow separator disposed within at least a portion of the port of the annular body, the flow separator including a flow straightening portion defining a plurality of separate passageways, each of the plurality of separate passageways having a hydraulic diameter and a length that is larger than the hydraulic diameter, thereby separating the flow of fluid through the port into a plurality of separate flow paths to interrupt turbulence in the port. 2. The seat ring of claim 1, wherein the plurality of separate passageways are parallel to each other. 3. The seat ring of claim 1, wherein each of the separate passageways is a straight passageway. 4. The seat ring of claim 1, wherein the plurality of separate passageways share a common hydraulic diameter. 5. The seat ring of claim 1, wherein each of the separate passageways includes either a square cross-section or a circular cross-section. 6. The seat ring of claim 1, wherein a ratio of the length of each separate passageway to the hydraulic diameter is in the range of approximately 1.16 to approximately 10. 7. The seat ring of claim 1, wherein a ratio of the length of each separate passageway to the hydraulic diameter is in the range of approximately 3 to approximately 6. 8. The seat ring of claim 1, wherein a ratio of the length of each separate passageway to the hydraulic diameter is approximately 4.75. 9. The seat ring of claim 1, wherein the hydraulic diameter of each of the separate passageways is in a range of approximately 1/2 inch to 2 inches and the length of each of the separate passageways is in a range of approximately 3 inches to approximately 6 inches. 10. The seat ring of claim 1, wherein the flow straightening portion of the flow separator comprises a first plurality of parallel slats and a second plurality of parallel slats extending transverse to and interconnected with the first plurality of parallel slats to define the plurality of separate passageways. 11. The seat ring of claim 1, wherein the flow straightening portion of the flow separator includes a plurality of parallel tubes fixed in a bundle. 12. The seat ring of claim 1, wherein the plurality of separate passageways are uniformly distributed across the entirety of the flow straightening portion. 13. The seat ring of claim 1, wherein the flow separator further comprises a plurality of foot portions extending radially outward from the flow straightening portion, each of the foot portions fixed to an axial end surface of the annular body. 14. The seat ring of claim 1, wherein the flow straightening portion has a cross-sectional shape that corresponds with a cross-sectional shape of the port. 15. A fluid flow control device, comprising: a valve body defining an inlet orifice, an outlet orifice, and a gallery disposed between the inlet orifice and the outlet orifice, the inlet and the outlet orifices extending along a common first axis, the gallery extending along a second axis that is transverse to the first axis; anda control member disposed within the gallery of the valve body and displaceable along the second axis for controlling the flow of fluid through the valve body, the control member comprising a stem and a valve plug coupled to the stem;a seat ring fixedly disposed within the gallery of the valve body, the seat ring comprising an annular body and a flow separator, the annular body including a retaining portion and an interior sidewall, the retaining portion fixedly attached to the valve body and the interior sidewall defining a port for accommodating fluid flow through the gallery, the flow separator disposed within at least a portion of the port of the annular body, the flow separator including a flow straightening portion defining a plurality of separate passageways, each of the plurality of separate passageways having a hydraulic diameter and a length that is larger than the hydraulic diameter, thereby separating the flow of fluid through the port into a plurality of separate flow paths to interrupt turbulence in the port and the gallery,wherein the control member is displaceable along the second axis between a closed position in which the valve plug directly contacts a seating surface defined by the interior sidewall and an open position in which the valve plug is spaced away from the seating surface to enable fluid flow. 16. The fluid flow control device of claim 15, wherein the valve body further comprises an inlet passageway extending between the inlet orifice and the gallery, an outlet passageway extending between the outlet passageway and the gallery, wherein a portion of the inlet passageway that is disposed adjacent to the gallery extends along a transition axis that is disposed at an angle relative to the second axis of the gallery, the angle being in a range of approximately 30 degrees to approximately 90 degrees. 17. The fluid flow control device of claim 16, wherein the angle is in a range of approximately 45 degrees to approximately 90 degrees. 18. The fluid flow control device of claim 16, wherein the angle is approximately 45 degrees. 19. The fluid flow control device claim 15, wherein the valve body comprises a face-to-face dimension and the seat ring includes a port diameter, the face-to-face dimension of the valve body being defined as a distance between an inlet plane that is occupied by the inlet orifice and an outlet plane that is occupied by the outlet orifice, the port diameter of the seat ring being defined as a diameter of the port in the seat ring, wherein a ratio of the face-to-face dimension to the port diameter is in a range of approximately 1.43 to approximately 10. 20. The fluid flow control device of claim 19, wherein a ratio of the face-to-face dimension to the port diameter is in a range of approximately 2.5 to approximately 3. 21. The fluid flow control device of claim 15, wherein the plurality of separate passageways in the flow separator are parallel to each other. 22. The fluid flow control device of claim 15, wherein each of the separate passageways in the flow separator is a straight passageway. 23. The fluid flow control device of claim 15, wherein the plurality of separate passageways in the flow separator share a common hydraulic diameter. 24. The fluid flow control device of claim 15, wherein each of the separate passageways in the flow separator includes either a square cross-section or a circular cross-section. 25. The fluid flow control device of claim 15, wherein a ratio of the length of each separate passageway to the hydraulic diameter is in the range of approximately 1.16 to approximately 10. 26. The fluid flow control device of claim 15, wherein a ratio of the length of each separate passageway to the hydraulic diameter is in the range of approximately 3 to approximately 6. 27. The fluid flow control device of claim 15, wherein a ratio of the length of each separate passageway to the hydraulic diameter is approximately 4.75. 28. The fluid flow control device of claim 15, wherein the hydraulic diameter of each of the separate passageways in the flow separator is in a range of approximately ½ inch to 2 inches and the length of each of the separate passageways in the flow separator is in a range of approximately 3 inches to approximately 6 inches. 29. The fluid flow control device of claim 15, wherein the flow straightening portion of the flow separator comprises a first plurality of parallel slats and a second plurality of parallel slats extending transverse to and interconnected with the first plurality of parallel slats to define the plurality of separate passageways. 30. The fluid flow control device of claim 15, wherein the flow straightening portion of the flow separator includes a plurality of parallel tubes fixed in a bundle. 31. The fluid flow control device of claim 15, wherein the plurality of separate passageways in the flow separator are uniformly distributed across the entirety of the flow straightening portion. 32. The fluid flow control device of claim 15, wherein the flow separator further comprises a plurality of foot portions extending radially outward from the flow straightening portion, each of the foot portions fixed to an axial end surface of the annular body. 33. The fluid flow control device of claim 15, wherein the flow straightening portion of the flow separator of the seat ring has a cross-sectional shape that corresponds with a cross-sectional shape of the port of the seat ring. 34. A fluid flow control device, comprising: a valve body defining an inlet orifice, an outlet orifice, and a gallery disposed between the inlet orifice and the outlet orifice, the inlet and the outlet orifices extending along a common first axis, the gallery extending along a second axis that is transverse to the first axis; anda control member disposed within the gallery of the valve body and displaceable along the second axis for controlling the flow of fluid through the valve body, the control member comprising a stem and a valve plug coupled to the stem;a seat ring fixedly disposed within the gallery of the valve body, the seat ring comprising an annular body and a means for reducing pressure fluctuations, the annular body including a retaining portion and an interior sidewall, the retaining portion fixedly attached to the valve body and the interior sidewall defining a port for accommodating fluid flow through the gallery, the means for reducing pressure fluctuations fixed within the port of the annular body for reducing fluctuations in an inlet pressure at the inlet orifice of the valve body and an outlet pressure at the outlet orifice of the valve body,wherein the control member is displaceable along the second axis between a closed position in which the valve plug directly contacts a seating surface defined by the interior sidewall and an open position in which the valve plug is spaced away from the seating surface to enable fluid flow. 35. A fluid flow control device, comprising: a valve body defining an inlet orifice, an outlet orifice, and a gallery disposed between the inlet orifice and the outlet orifice, the inlet and the outlet orifices extending along a common first axis, the gallery extending along a second axis that is transverse to the first axis; anda control member disposed within the gallery of the valve body and displaceable along the second axis for controlling the flow of fluid through the valve body, the control member comprising a stem and a valve plug coupled to the stem;a seat ring fixedly disposed within the gallery of the valve body, the seat ring comprising an annular body and a means for reducing force fluctuations, the annular body including a retaining portion and an interior sidewall, the retaining portion fixedly attached to the valve body and the interior sidewall defining a port for accommodating fluid flow through the gallery, the means for reducing force fluctuations fixed within the port of the annular body for reducing fluctuations in a force applied to the control element,wherein the control member is displaceable along the second axis between a closed position in which the valve plug directly contacts a seating surface defined by the interior sidewall and an open position in which the valve plug is spaced away from the seating surface to enable fluid flow. 36. A method of manufacturing a seat ring for a fluid flow control device, the seat ring including a ring-shaped body and a flow separator, the method comprising: cutting a first plurality of flat pieces of a material into a first plurality of elongated slats having a first plurality of slits extending downward from an upper edge thereof;cutting a second plurality of flat pieces of a material into a second plurality of elongated slats having a second plurality of slits extending upward from a bottom edge thereof;interconnecting the first plurality of elongated slats with the second plurality of elongated slats by aligning each of the first plurality of slits with a corresponding one of the second plurality of slits and sliding the slats together such that portions of the first plurality of slats are received within the second plurality of slits of the second plurality of elongated slats and portions of the second plurality of slats are received within the first plurality of slits of the first plurality of elongated slats;fixing the first and second pluralities of slats together at locations adjacent to at least some of the first and second pluralities of slits to create an intermediate flow separator;machining the intermediate flow separator into a desired shape to correspond with a cross-sectional shape of a port of the ring-shaped body of the seat ring for the fluid flow control device to create a final flow separator;inserting the final flow separator into the port of the ring-shaped body; andfixing the final flow separator to the ring-shaped body. 37. The method of claim 36, wherein fixing the first and second pluralities of slats together comprises at least one of welding or brazing. 38. The method of claim 36, wherein fixing the final flow separator to the ring-shaped body comprises at least one of welding or brazing. 39. The method of claim 36, wherein fixing the final flow separator to the ring-shaped body comprises fixing the final flow separator to an interior sidewall of the ring-shaped body. 40. The method of claim 36 wherein cutting the first and second pluralities of flat pieces into the first and second pluralities of elongated slats further comprises cutting at least some of the flat pieces to include foot flanges extending from opposite ends thereof. 41. The method of claim 40, wherein fixing the final flow separator to the ring-shaped body comprising fixing the foot flanges of the first and second pluralities of elongated slats to an axial end surface of the ring-shaped body. 42. The method of claim 41, wherein fixing the foot flanges of the first and second pluralities of elongated slats to an axial end surface of the ring-shaped body comprises at least one of welding or brazing. 43. A method of retro-fitting a fluid flow control device with a flow separator, the fluid flow control device comprising a valve body, a control element, and a seat ring, the valve body defining an inlet, an outlet, and a gallery disposed between the inlet and the outlet, the control element movably disposed in the gallery between a closed position and at least one open position, and the seat ring fixed in the gallery for being sealingly engaged by the control element when the control element is in the closed position, the method comprising: removing the control element from the gallery of the valve body, thereby exposing a gallery opening in the valve body;removing the seat ring from the valve body, the seat ring comprising an annular body including an interior sidewall defining a port for accommodating fluid flow through the gallery;positioning a flow separator into the port of the seat ring, the flow separator including a flow straightening portion and at least one foot portion, the flow straightening portion defining a plurality of separate passageways, the at least one foot portion extending radially outward from the flow straightening portion;fixing the at least one foot portion to an axial end surface of the annular body, thereby fixing the flow separator to the annular body; andinserting and securing the seat ring, including the annular body and the flow separator, in the gallery of the valve body such that the plurality of separate passageways are adapted to separate the flow of fluid through the port into a plurality of separate flow paths. 44. The method of claim 43, wherein fixing the at least one foot portion of the flow separator to the annular body of the seat ring comprises welding or brazing the at least one foot portion to the annular body. 45. The fluid flow control device of claim 15, further comprising a cage disposed within the gallery, the cage having a bottom end that directly contacts the retaining portion of the annular body to assist with maintaining the seat ring within the gallery of the valve body.
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