IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0354585
(2003-01-30)
|
발명자
/ 주소 |
- DePenning, Charles L.
- Ralston, Donald G.
- Baumann, Hans D.
|
출원인 / 주소 |
- Fisher Controls International, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
32 |
초록
▼
A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The seali
A valve having improved inherent flow characteristics and improved dynamic torque characteristics is provided. The valve includes a disk for controlling fluid flow inside the valve. The disk has at least a sealing surface for sealing with a valve seal when the disk is in a closed position. The sealing surface includes a contour and creates a flow clearance with the valve seal as the disk pivots from a closed position toward an open position. A radius of curvature of the contour defines a size of the flow clearance at predetermined disk positions to characterize flow through the valve. The valve can further include an upstream indentation for dynamic torque reduction and/or an indentation for dynamic torque reduction in case of a fluid flow reversal.
대표청구항
▼
1. A disk for characterizing fluid flow inside a valve, the disk comprising:a sealing surface for sealing with a valve seal when the disk is in a closed position, the sealing surface including an upstream portion and a downstream portion;wherein the upstream portion and the downstream portion includ
1. A disk for characterizing fluid flow inside a valve, the disk comprising:a sealing surface for sealing with a valve seal when the disk is in a closed position, the sealing surface including an upstream portion and a downstream portion;wherein the upstream portion and the downstream portion include shaped edges that create a flow opening between the sealing surface and the valve seal as the disk pivots from a closed position toward an open position, such that a profile and location of the shaped edge defines a size of the flow opening at predetermined disk positions to characterize fluid flow in a predetermined manner. 2. The disk according to claim 1, wherein the disk is disposed offset from a center axis through a pivot point of the disk. 3. The disk according to claim 1, further comprising an indentation formed along the upstream side of the disk for dynamic torque reduction. 4. The disk according to claim 3, wherein the indentation comprises at least one of a substantially concave curved surface and a ramp surface angled relative to a vertical axis. 5. The disk according to claim 1, wherein the disk is suitable for use in a butterfly valve. 6. The disk according to claim 1, wherein a substantial portion of a planar surface of the disk is angularly offset from a remaining planar surface of the disk to hinder dynamic torque reversal. 7. The disk according to claim 1, wherein a cross-sectional thickness of the disk is relatively smaller at the downstream portion of the disk than a cross-sectional thickness of the disk at the upstream portion of the disk. 8. The disk according to claim 1, wherein the shaped edge comprises a curved profile. 9. The disk according to claim 1, wherein the shaped edge comprises a profile that angles away from the valve seal as the disk rotates about the pivot point to transition from the closed position to the open position. 10. A valve, comprising:a valve body, the valve body having a substantially concave downstream cross section;pivotable disk disposed within the valve body for characterizing flow through the valve, the pivotable disk having at an upstream portion and a downstream portion providing a sealing surface for sealing with a valve seal when the disk is in a closed position;wherein at least one of the upstream portion and the downstream portion includes a shaped edge that creates a flow opening between the sealing surface and the valve seal as the disk pivots from a closed position toward an open position such that at least one of the upstream portion and the downstream portion cooperates with the downstream cross section of the valve body to characterize fluid flow therethrough. 11. The valve according to claim 10, wherein the valve is a butterfly valve. 12. The valve according to claim 10, wherein the disk is disposed offset from a center axis through a pivot point of the disk. 13. The valve according to claim 10, further comprising an indentation formed along the upstream side of the disk for dynamic torque reduction. 14. The valve according to claim 13, wherein the indentation comprises at least one of a substantially concave curved surface and a ramp surface angled relative to a vertical axis. 15. The valve according to claim 10, wherein the disk is suitable for use in a butterfly valve. 16. The valve according to claim 10, wherein a substantial portion of a planar surface of the disk is angularly offset from a remaining planar surface of the disk to hinder dynamic torque reversal. 17. The valve according to claim 10, wherein a cross-sectional thickness of the disk is relatively smaller at the upstream portion of the disk than a cross-sectional thickness of the disk at the downstream portion of the disk. 18. The valve according to claim 10, wherein the shaped edge comprises a curved profile. 19. The valve according to claim 10, wherein the shaped edge comprises a profile that angles away from the valve seal as the disk rotates about the pivot point to transition from the closed position to the open position. 20. A disk for characterizing fluid flow inside a valve, the disk comprising:a sealing surface for sealing with a valve seal when the disk is in a closed position, the disk further having a cross-sectional thickness relatively smaller at a trailing edge of the disk than a cross-sectional thickness of the disk at a leading edge of the disk;wherein the sealing surface includes a shaped edge that creates a flow opening between the sealing surface and the valve seal as the disk pivots from a closed position toward an open position, such that a profile and location of the shaped edge defines a size of the flow opening at predetermined disk positions to characterize fluid flow therethrough. 21. The disk according to claim 20, wherein the disk is disposed offset from a center axis through a pivot point of the disk. 22. The disk according to claim 20, further comprising an indentation formed along the upstream side of the disk for dynamic torque reduction. 23. The disk according to claim 22, wherein the indentation comprises at least one of a substantially concave curved surface and a ramp surface angled relative to a vertical axis. 24. The disk according to claim 20, wherein a substantial portion of a planar surface of the disk is angularly offset from a remaining planar surface of the disk to hinder dynamic torque reversal. 25. The disk according to claim 20, wherein the shaped edge comprises a curved profile. 26. A valve, comprising:a valve body;a pivotable disk disposed within the valve body for characterizing flow through the valve, the pivotable disk having a cross-sectional thickness relatively smaller at a trailing edge of the disk than a cross-sectional thickness of the disk at a leading edge of the disk; anda sealing surface for sealing with a valve seal when the disk is in a closed position;wherein the sealing surface includes a shaped edge that creates a flow opening between the sealing surface and the valve seal as the disk pivots from a closed position toward an open position, such that a profile and location of the shaped edge defines a size of the flow opening at predetermined disk positions to characterize fluid flow therethrough. 27. The valve according to claim 25, wherein the disk is disposed offset from a center axis through a pivot point of the disk. 28. The valve according to claim 25, further comprising an indentation formed along the upstream side of the disk for dynamic torque reduction. 29. The valve according to claim 28, wherein the indentation comprises at least one of a substantially concave curved surface and a ramp surface angled relative to a vertical axis. 30. The valve according to claim 25, wherein a substantial portion of a planar surface of the disk is angularly offset from a remaining planar surface of the disk to hinder dynamic torque reversal. 31. The valve according to claim 25, wherein the shaped edge comprises a curved profile.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.