Bi-directional seal assembly for use with valves
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16J-015/16
F16J-015/3236
F16K-003/24
F16K-047/08
출원번호
US-0217791
(2014-03-18)
등록번호
US-10054227
(2018-08-21)
발명자
/ 주소
Faas, Wayne Russell
출원인 / 주소
Fisher Controls International LLC
대리인 / 주소
Hanley, Flight & Zimmerman, LLC
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
Seal assemblies for use with fluid valves are described. An example seal assembly includes a first seal and a second seal opposite the first seal. The first and second seals are to sealingly engage a closure member of a valve and a sealing surface opposite the closure member. A spacer ring is dispos
Seal assemblies for use with fluid valves are described. An example seal assembly includes a first seal and a second seal opposite the first seal. The first and second seals are to sealingly engage a closure member of a valve and a sealing surface opposite the closure member. A spacer ring is disposed between the first and second seals to prevent the first and second seals from contacting each other. The spacer ring has an aperture therethrough to enable pressurized fluid to flow from a first side of the spacer ring and a second side of the spacer ring opposite the first side.
대표청구항▼
1. An apparatus for use with a fluid valve, comprising: a closure member to slidably couple relative to at least one of a cage or a valve body, the closure member to be positioned between an inlet and an outlet of a fluid flow passageway of the valve body, the closure member being movable relative t
1. An apparatus for use with a fluid valve, comprising: a closure member to slidably couple relative to at least one of a cage or a valve body, the closure member to be positioned between an inlet and an outlet of a fluid flow passageway of the valve body, the closure member being movable relative to a valve seat of the valve body to control fluid flow through an orifice of the fluid flow passageway positioned between the inlet and the outlet, the closure member having a seal gland and a channel in fluid communication with the seal gland, the channel to fluidly couple the fluid flow passageway of the valve body and the seal gland when the closure member is coupled to the valve body and the closure member is in sealing engagement with the valve seat to prevent the flow of fluid through the valve; anda seal assembly positioned in the seal gland, the seal assembly including: a first seal and a second seal opposite the first seal, the first and second seals to sealingly engage the closure member and a sealing surface of the at least one of the cage or the valve body opposite the closure member; anda spacer ring disposed between the first and second seals to prevent the first and second seals from contacting each other, the spacer ring having an aperture therethrough to provide a fluid pathway between a first side of the spacer ring and a second side of the spacer ring opposite the first side, the aperture of the spacer ring to be positioned in fluid communication with the channel of the closure member to enable fluid flowing through the channel to flow between the first side of the spacer ring and the second side of the spacer ring. 2. An apparatus as defined in claim 1, wherein the spacer ring is sized so that the spacer ring does not contact the closure member or the sealing surface. 3. An apparatus as defined in claim 1, wherein each of the first and second seals includes a cavity. 4. An apparatus as defined in claim 3, wherein the cavities of the first and second seals face each other. 5. An apparatus as defined in claim 3, wherein the spacer ring is at least partially disposed within the cavities of the first and second seals to prevent the first and second seals from contacting each other. 6. An apparatus as defined in claim 1, wherein the first seal or the second seal includes a spring disposed within a jacket to urge the jacket against the sealing surface and the closure member. 7. An apparatus as defined in claim 1, wherein the spacer ring comprises a metal or thermoplastic material. 8. An apparatus as defined in claim 1, further including the valve body. 9. An apparatus as defined in claim 1, wherein the aperture is in fluid communication with the channel to equalize pressure across the seal assembly to reduce friction between the closure member and the sealing surface. 10. An apparatus as defined in claim 1, wherein the closure member includes a conduit extending between a first end of the closure member adjacent the valve seat and a second end of the closure member opposite the first end to pressure balance the closure member, the conduit being fluidly coupled to the channel. 11. An apparatus as defined in claim 10, wherein an axis of the conduit is substantially perpendicular to an axis of the channel. 12. An apparatus for use with a fluid valve comprising: a valve plug having a seal gland and a passage in fluid communication with the seal gland, the passage to fluidly couple a fluid flow passageway of a valve body and the seal gland when the valve plug is coupled to the valve body and the valve plug is in a closed position to prevent the flow of fluid through the valve body; anda seal assembly positioned in the seal gland, the seal assembly including: a first seal having a first leg and a second leg forming a first cavity therebetween;a second seal having a third leg and a fourth leg forming a second cavity therebetween; anda spacer ring disposed between the first and second seals to maintain the first and second seals in spaced apart relation to prevent the first and second seals from contacting each other, the spacer ring being at least partially positioned within the first cavity such that the spacer ring and the first leg define a first portion of the first cavity and the spacer ring and the second leg define a second portion of the first cavity, and the spacer ring being at least partially positioned within the second cavity such that the spacer ring and the third leg define a third portion of the second cavity and the spacer ring and the fourth leg define a fourth portion of the second cavity, the spacer ring including an aperture positionable adjacent and in fluid communication with the passage of the valve plug to enable pressurized fluid to flow between the first and third portions of the respective first and second cavities and the second and fourth portions of the respective first and second cavities to pressure assist the seal assembly. 13. An apparatus as defined in claim 12, wherein the spacer ring is sized to not contact a cage or the valve plug when the seal assembly is positioned within a valve body of the fluid valve. 14. An apparatus as defined in claim 12, wherein the first and second seals are spring-loaded seals. 15. An apparatus as defined in claim 12, further comprising a back-up ring adjacent the first and second seals and a piston ring adjacent the back-up ring. 16. An apparatus for use with a fluid valve, comprising: means for controlling fluid flow between an inlet and an outlet of the fluid valve, the means for controlling fluid flow including means for receiving a means for sealing, the means for controlling fluid flow including means for venting in fluid communication with the means for receiving the means for sealing such that the means for venting fluidly couples the means for sealing and a fluid flow passageway of the fluid valve when the means for closing is in a closed position to prevent fluid flow between an inlet and an outlet of the fluid valve, the means for sealing including: first means for sealing and second means for sealing opposite the first means for sealing, the first and second means for sealing to sealingly engage the means for controlling fluid flow and a sealing surface opposite the means for controlling fluid flow; andmeans for spacing the first means for sealing away from the second means for sealing to prevent the first and second means for sealing from contacting each other, the means for spacing being sized so that the means for spacing does not contact the means for controlling fluid flow or the sealing surface, the means for spacing including means for allowing fluid flow through the means for spacing between a first side of the means for spacing and a second side of the means for spacing opposite the first side of the means for spacing, the means for allowing fluid flow through the means for spacing being in fluid communication with the means for venting to enable fluid to flow between the first side and the second side of the means for spacing. 17. An apparatus as defined in claim 1, wherein the seal gland of the closure member is to be in continuous fluid communication with the inlet via the channel when the closure member is coupled to the fluid valve. 18. An apparatus as defined in claim 16, wherein the means for venting enables pressurized fluid flow between the inlet and the means for receiving the means for sealing when the means for controlling fluid flow is in a closed position to prevent fluid flow between the inlet and the outlet. 19. The apparatus as defined in claim 1, wherein the fluid in the seal gland is to reduce friction between the seal assembly and the sealing surface when the closure member moves relative to the sealing surface. 20. The apparatus as defined in claim 12, further comprising a valve body defining a housing and a fluid flow passageway, wherein the valve plug is positioned in the fluid flow passageway and is movable relative to the housing and a valve seat of the fluid flow passageway to control fluid flow between an inlet and an outlet of the fluid flow passageway.
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이 특허에 인용된 특허 (20)
Freudenthal Merton L. (P.O. Box 1400 Gretna LA 70053), Annular lip type sealing ring with pre-loaded lip portions.
Lev, Leonid C.; Podorashi, Dimitri A.; Lukitsch, Michael J.; Michler, Thorsten; Xiao, Xingcheng, Seal performance for hydrogen storage and supply systems.
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