Embodiments of a valve device that reduces noise and vibration that may occur during low flow conditions in fluid couplings (e.g., valves and flow regulators). These embodiments utilize a plug and seat arrangement with geometry to prevent pressure differentials that cause the plug element to open an
Embodiments of a valve device that reduces noise and vibration that may occur during low flow conditions in fluid couplings (e.g., valves and flow regulators). These embodiments utilize a plug and seat arrangement with geometry to prevent pressure differentials that cause the plug element to open and close in a cyclic pattern. In one embodiment, the valve device includes a seat element with an aperture and a plug element with a boss that extends into the aperture when the plug element contacts the seat element. The boss has an outer surface that forms a gap, which defines an annular area proximate the point of contact between the seat element and the plug element that is sized to reduce Venturi flow effects that cause the cyclic pattern to occur.
대표청구항▼
1. A valve device, comprising: a seat with an aperture forming an inner aperture surface, the seat having a top with a lip forming a rounded surface that circumscribes the aperture; anda plug moveable relative to the seat to a first position at which a contact surface of the plug contacts the rounde
1. A valve device, comprising: a seat with an aperture forming an inner aperture surface, the seat having a top with a lip forming a rounded surface that circumscribes the aperture; anda plug moveable relative to the seat to a first position at which a contact surface of the plug contacts the rounded surface, the plug comprising an extension member in contact with the contact surface and configured to fit into the aperture at the first position,wherein the extension member forms a bottom of the plug, has a central axis, and has an outer surface with a profile wholly disposed in the aperture at the first position, the profile having a first section parallel to the inner aperture surface that reduces the aperture to an area that is 2% or less of its original size, the first section gives way to a second section that tapers toward the central axis that gives way to third section that tapers toward the central axis and terminates at the bottom of the plug. 2. The valve device of claim 1, wherein the contact surface is disposed radially outside of the extension member. 3. The valve device of claim 1, further comprising a seal disposed on the plug, wherein the seal forms the contact surface that is configured to contact the rounded lip of the seat at the first position. 4. The valve device of claim 3, wherein the seal forms a ring disposed about a portion of the extension member. 5. The valve device of claim 1, wherein the inner aperture surface is adjacent the rounded surface. 6. The valve device of claim 1, wherein the aperture has a diameter that varies in a direction from the top to the bottom of the seat. 7. The valve device of claim 1, wherein the profile in the third section forms a chamfer. 8. The valve device of claim 1, wherein the extension member is formed monolithically with the plug. 9. The valve device of claim 1, wherein the extension member is separable from the plug. 10. The valve device of claim 9, further comprising a valve stem that extends through the plug and out of the bottom of the extension member. 11. A fluid coupling, comprising: a housing having a pair of inlet/outlets;a valve device in flow connection with the pair of inlet/outlets, the valve device comprising a plug, a seat, and a seal, the seat forming an aperture forming an inner aperture surface, the seat having a top with a lip forming a rounded surface protruding toward the plug, the plug having a seat portion extending toward the seat, and the seal set into the plug and circumscribes at least part of the seat portion so as to contact the lip with at least part of the seat portion located in the aperture,wherein the plug is configured to move relative to the seat to a first position to locate a contact surface in contact with the rounded surface of the lip to fit the boss into the aperture, andwherein the seat portion of the plug forms a bottom of the plug, has a central axis, and has an outer surface with a profile wholly disposed in the aperture at the first position, a first section gives way to a second section that tapers toward the central axis that gives way to a third section that tapers toward the central axis and terminates at the bottom of the plug. 12. The fluid coupling of claim 11, wherein the inner aperture surface is formed adjacent the rounded lip. 13. The fluid coupling of claim 11, further comprising: a stem extending through the plug;a nut disposed on the stem; anda force element coupled with the stem so as to apply a force onto the stem to locate the plug in a closed position. 14. The fluid coupling of claim 13, wherein the inner aperture surface has a portion of uniform diameter extending from the rounded lip, and wherein at least part of the boss overlaps with the portion of uniform diameter in the closed position to locate the first section proximate the portion of uniform diameter. 15. The fluid coupling of claim 13, wherein the plug comprises a plurality of parts, each formed separately and coupled with one another via the stem and the nut, and wherein one of the plurality of parts forms the seat portion. 16. The fluid coupling of claim 13, wherein the profile in the third section forms a chamfer. 17. The valve device of claim 11, wherein the seat portion is separable from the plug. 18. An assembly, comprising: a plug element comprising a retainer, an extension member forming a boss that extends into the retainer, and a seal set into the retainer and at least partially surrounding the boss, the seal having an exposed surface extending radially outwardly of the boss; anda seat element having a top, a bottom, and an aperture having a diameter that is larger than the diameter of the boss, the top forming a lip with a rounded surface that circumscribes the aperture,wherein the plug element and the seat element are configured to cooperate with one another to prevent flow of a fluid in a valve with the exposed surface in contact with the rounded surface, andwherein the extension member forms a bottom of the plug, has a central axis, and has an outer surface with a profile wholly disposed in the aperture at a first position, the profile having a first section parallel to the central axis that gives way to a second section that tapers toward the central axis that gives way to a third section that tapers toward the central axis and terminates at the bottom of the plug. 19. The assembly of claim 18, wherein the profile in the third section forms a chamfer. 20. The assembly of claim 18, wherein the boss is separable from the plug.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Baker Gerald S. (Houston TX), Choke and improved needle tip therefor.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.