[특허]Pressure reducer with adjustable flow restrictor

Cameron International Corporation

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Pressure reducer with adjustable flow restrictor

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-001/12 F16K-001/00
미국특허분류(USC)	137/219
출원번호	US-0489578 (2002-09-18)
등록번호	US-7353837 (2008-04-08)
우선권정보	DE-201 15 470 U(2001-09-19)
국제출원번호	PCT/EP02/010487 (2002-09-18)
§371/§102 date	20040728 (20040728)
국제공개번호	WO03/025439 (2003-03-27)
발명자 / 주소	Biester,Klaus
출원인 / 주소	Cameron International Corporation
대리인 / 주소	Conley Rose, P.C.
인용정보	피인용 횟수 : 8 인용 특허 : 9

초록
▼

A pressure reducer has a housing comprising an inlet and an outlet in which a flow-around body is arranged in a flow channel connecting inlet and outlet. A flow restrictor is adjustably mounted relative to the flow-around body for varying a flow rate and is movably connected with an adjusting means comprising a recirculating ball nut and a rotating spindle wherein the rotating spindle is movably connected with said flow restrictor. To improve such a pressure reducer that a corresponding flow restrictor with a facilitated construction is reliable and can exactly be adjusted in position, the recirculating ball nut is detachably fastened to a turning sleeve rotatably mounted in the flow-around body and the recirculating ball nut is connected with a driving toothed wheel in a rotation-resistant manner, which is rotatable by an electric drive for the movable connected with recirculating ball nut.

대표
청구항
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The invention claimed is: 1. A pressure reducer comprising: a housing having an inlet and an outlet, in which a flow-around body is arranged in a flow channel connecting the inlet and the outlet, a flow restrictor adjustably mounted relative to the flow-around body for varying a flow rate and movably connected with an adjusting means having a recirculating ball nut substantially fixed in an axial direction and rotatably mounted in the flow-around body and a rotating spindle axially adjustably mounted in the recirculating ball nut, wherein the rotating spindle is movably connected with the flow restrictor, the recirculating ball nut being detachably fastened in a turning sleeve rotatably mounted in the flow-around body and the recirculating ball nut being connected with a driving toothed wheel in a rotation-resistant manner, which is rotatable by an electric drive for the movable connection with the recirculating ball nut. 2. The pressure reducer according to claim 1, wherein the turning sleeve is fixed in a radial direction. 3. The pressure reducer according to claim 1, wherein the turning sleeve and the recirculating ball nut are arranged in an interior space of the flow-around body. 4. The pressure reducer according to claim 1, wherein a cone point of the inlet end body faces in the direction of the inlet and is arranged particularly centrally to the inlet. 5. The pressure reducer according to claim 1, wherein the driving toothed wheel is fastened with the turning sleeve and/or the recirculating ball nut by a screwed connection. 6. The pressure reducer according to claim 1, wherein the housing is formed of two parts and the parts of the housing are held together by a clamping ring along their outer circumference. 7. The pressure reducer of claim 1, further comprising the flow restrictor being adjustably mounted downstream relative to the flow-around body. 8. The pressure reducer according to claim 1, wherein the turning sleeve includes a radially inwardly, at least partially protruding shoulder closely fitting to a radially outwardly protruding contact flange of the recirculating ball nut. 9. The pressure reducer according to claim 8, wherein the shoulder and contact flange are detachably connected with each other. 10. The pressure reducer according to claim 1, wherein the rotating spindle is connected with an actuating piston being detachably connected with the flow restrictor. 11. The pressure reducer according to claim 10, wherein the rotating spindle and the actuating piston engage each other with their ends facing each other in a form-fitted manner and/or are screwed to each other. 12. The pressure reducer according to claim 1, wherein the flow-around body directly or an outer sleeve arranged thereon includes at least one radial extension extending to the inner wall of the flow channel. 13. The pressure reducer according to claim 12, wherein electrical wires, supply lines or the like are passed through the extension into the flow-around body. 14. The pressure reducer according to claim 12, wherein the radial extension is pointed at least at its end facing the inlet. 15. The pressure reducer according to claim 1, wherein a pivot bearing means is arranged between the outer wall of the turning sleeve and walls of the interior space of the flow-around body. 16. The pressure reducer according to claim 15, wherein the pivot bearing means includes at least one ball bearing. 17. The pressure reducer according to claim 15, wherein the pivot bearing means is detachably fastened on the wall of the interior space. 18. The pressure reducer according to claim 15, wherein the pivot bearing means closely fits to a shoulder of the wall with one of its ends and is fixed relative to the wall at least in an axial direction at its other end. 19. The pressure reducer according to claim 15, wherein a retaining ring is associated at the other end of the pivot bearing means. 20. The pressure reducer according to claim 15, wherein a ring nut can be screwed onto a screwing end of the turning sleeve. 21. The pressure reducer according to claim 20, wherein the turning sleeve includes a radially outwardly protruding stop spaced apart from the screwing end. 22. The pressure reducer according to claim 21, wherein a spacer ring can be arranged between the stop and the pivot bearing means. 23. The pressure reducer according to claim 1, wherein the flow-around body includes a central body and two end bodies. 24. The pressure reducer according to claim 23, wherein at least the inlet end body facing the inlet is substantially shaped like a circular cone. 25. The pressure reducer according to claim 23, wherein at least the recirculating ball nut and the turning sleeve are arranged in the substantially cylindrical central body. 26. The pressure reducer according to claim 23, wherein a locking plate is arranged between the central body and the inlet end body. 27. The pressure reducer according to claim 26, wherein a position sensor is arranged approximately centrally to the locking plate. 28. The pressure reducer according to claim 1, wherein the electric drive includes at least one electric motor. 29. The pressure reducer according to claim 28, wherein the driving toothed wheel is constructed as a worm gear being engaged with a worm shaft driven by the electric motor. 30. The pressure reducer according to claim 29, wherein the worm shaft is movably connected with an electric motor on each of its end sections. 31. The pressure reducer according to claim 30, wherein the end section of the shaft is constructed as driving axle of the electric motor. 32. The pressure reducer according to claim 30, wherein the end sections of the shaft are mounted adjacent the electric motors. 33. The pressure reducer according to claim 30, wherein the electric motors and the worm shaft are arranged in an outwardly open transverse bore extending substantially perpendicularly to the rotating spindle. 34. The pressure reducer according to claim 33, wherein a radial extension is associated with each of the open ends of the transverse bore. 35. The pressure reducer according to claim 1, wherein the flow restrictor is an axially displaceable perforated panel. 36. The pressure reducer according to claim 35, wherein holes with different diameters are formed in the perforated panel in an axial direction. 37. The pressure reducer according to claim 35, wherein the perforated panel is constructed as a hollow cylinder with holes arranged in the cylinder wall. 38. The pressure reducer according to claim 37, wherein the hollow cylinder is displaceably mounted in a cylindrical portion of the outlet. 39. The pressure reducer according to claim 38, wherein an inner wall of the cylindrical portion is formed by a sealing sleeve. 40. The pressure reducer according to claim 38, wherein the outlet conically expands downstream of the cylindrical portion. 41. The pressure reducer according to claim 37, wherein the hollow cylinder includes at its end facing the flow-around body an insertable cylinder axially displaceable in a bearing bore. 42. The pressure reducer according to claim 41, wherein the hollow cylinder and the insertable cylinder have identical outer diameters. 43. The pressure reducer according to claim 41, wherein at least one sealing member is arranged between the insertable cylinder and the inner wall of the bearing bore. 44. The pressure reducer according to claim 41, wherein a flow channel intersperses the insertable cylinder in an axial direction. 45. The pressure reducer according to claim 41, wherein the rotating spindle is connected with an actuating piston being detachably connected with the flow restrictor and wherein a free end of the actuating piston or the rotating spindle is screwed into an end bore of the insertable cylinder. 46. The pressure reducer according to claim 45, wherein the end bore includes a shoulder for defining a screwed position of the free end. 47. The pressure reducer according to claim 45, wherein a guide bore is formed parallel to the end bore in the insertable cylinder with which a guide pin is displaceably engaged. 48. A pressure reducer comprising: a housing comprising an inlet, an outlet, and a housing axis extending from the inlet to the outlet; a flow-around body disposed in the housing to at least partially define an annular chamber in fluid communication with the inlet and outlet; a moveable flow restrictor disposed in a fluid pathway between the inlet and the outlet; and an actuation mechanism disposed in the flow-around body, coupled to the moveable flow restrictor, and configured to at least partially define the position of the flow restrictor with respect to the inlet and outlet; and wherein the actuation mechanism comprises: a first gear configured to rotate about a first axis; a second gear configured to rotate in response to rotation of the first gear and configured to rotate about a second axis; a threaded spindle configured to move in a direction along the second axis in response to actuation of second gear to change the position of the flow restrictor; wherein the direction of rotational force applied to the second gear is parallel with the first axis; and an electric drive; and, the first gear being coupled to the electric drive. 49. The pressure reduced of claim 48, wherein the second gear comprises a ring gear fixed in rotation with respect to a ball nut, the ball nut being in engagement with the threaded spindle. 50. The pressure reducer of claim 48, comprising a torque-generating component disposed in the flow-around body. 51. The pressure reducer of claim 50, wherein the torque-generating component comprises at least one electric motor. 52. A pressure reducer comprising: a housing comprising an inlet, an outlet, and a housing axis extending from the inlet to the outlet; a flow-around body disposed in the housing to at least partially define an annular chamber in fluid communication with the inlet and outlet; a moveable flow restrictor disposed in a fluid pathway between the inlet and the outlet; and an actuation mechanism disposed in the flow-around body, coupled to the moveable flow restrictor, and configured to at least partially define the position of the flow restrictor with respect to the inlet and outlet; and wherein the actuation mechanism comprises: a first gear configured to rotate about a first axis; a second gear configured to rotate in response to rotation of the first gear and configured to rotate about a second axis; a threaded spindle configured to move in a direction along the second axis in response to actuation of second gear to change the position of the flow restrictor; wherein the first and second axes respectively extend in first and second planes that are non-perpendicular with respect to one another and wherein the first plane is non-perpendicular to the housing axis; and an electric drive; and, the first gear being coupled to the electric drive.

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Pressure reducer with adjustable flow restrictor

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Pressure reducer with adjustable flow restrictor

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이 특허를 인용한 특허 (8)

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