Graphite/metal valve seal assembly for high temperature control valves
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-025/00
F16K-003/24
출원번호
US-0208389
(2014-03-13)
등록번호
US-9360128
(2016-06-07)
발명자
/ 주소
Grabau, Ted D.
출원인 / 주소
FISHER CONTROLS INTERNATIONAL LLC
대리인 / 주소
Marshall, Gerstein & Borun LLP
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A sliding stem control valve includes a valve body, a seat ring located within the valve body and a valve plug slidably mounted within the valve body, the valve plug and the valve seat cooperating to control fluid flow through the control valve. A seal assembly is located between the valve plug and
A sliding stem control valve includes a valve body, a seat ring located within the valve body and a valve plug slidably mounted within the valve body, the valve plug and the valve seat cooperating to control fluid flow through the control valve. A seal assembly is located between the valve plug and the valve seat, the seal assembly including a metal/graphite seal ring located between a first backup ring and a second backup ring. A biasing element is located adjacent the second backup ring and a retainer ring is located adjacent the biasing element to maintain the biasing element adjacent the second backup ring.
대표청구항▼
1. A sliding stem control valve comprising: a valve body having an inlet and an outlet fluidly connected through a passageway;a seat ring mounted in the passageway,a control element slidably disposed within the valve body, the control element and the valve seat cooperating to control fluid flow thro
1. A sliding stem control valve comprising: a valve body having an inlet and an outlet fluidly connected through a passageway;a seat ring mounted in the passageway,a control element slidably disposed within the valve body, the control element and the valve seat cooperating to control fluid flow through the valve body; anda seal assembly having a metal/graphite seal ring located between a first backup ring and a second backup ring, a biasing element located adjacent the second backup ring, and a retainer ring holding the biasing element adjacent to the second backup ring,wherein the metal/graphite seal ring includes a graphite ring and a metal envelope at least partially surrounding the graphite ring, the metal envelope including a bottom side, an inner side wall and an outer side wall, and the second backup ring is at least partially disposed within the metal envelope. 2. The sliding stem control valve of claim 1, wherein the metal envelope surrounds the graphite ring on three sides. 3. The sliding stem control valve of claim 2, wherein metal envelope has a thickness of between about 0.001 in and about 0.005 in. 4. The sliding stem control valve of claim 1, wherein the inner side wall and the outer side wall extend upward substantially perpendicular to the bottom side forming a “U” shape. 5. The sliding stem control valve of claim 4, wherein the inner side wall and the outer side wall each have a height that is greater than a thickness of the graphite ring. 6. The sliding stem control valve of claim 1, wherein the second backup ring has a smaller radial dimension than the first backup ring. 7. The sliding stem control valve of claim 1, wherein the metal envelope is formed from one of N07718, N07750, aluminum, copper, and bronze. 8. The sliding stem control valve of claim 1, wherein the metal envelope is coated with silver plating. 9. A seal assembly for a high temperature control valve, the seal assembly comprising: a metal/graphite seal ring located between a first backup ring and a second backup ring;a biasing element located adjacent to the second backup ring; anda retainer ring holding the biasing element against the second backup ring,wherein the metal/graphite seal ring includes a graphite ring and a metal envelope at least partially surrounding the graphite ring, the metal envelope including a bottom side, an inner side wall and an outer side wall, and the second backup ring is at least partially disposed within the metal envelope. 10. The seal assembly of claim 9, wherein the metal envelope surrounds the graphite ring on three sides. 11. The seal assembly of claim 10, wherein metal envelope has a thickness of between about 0.001 in and about 0.005 in. 12. The seal assembly of claim 11, wherein the inner side wall and the outer side wall extending upward substantially perpendicular to the bottom side forming a “U” shape. 13. The seal assembly of claim 12, wherein the inner side wall and the outer side wall each have a height that is greater than a thickness of the graphite ring. 14. The seal assembly of claim 9, wherein the second backup ring has a smaller radial dimension than the first backup ring. 15. The seal assembly of claim 9, wherein the metal envelope is formed from one of N07718, N07750, aluminum, copper, and bronze. 16. The seal assembly of claim 9, wherein the metal envelope is coated with silver plating.
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이 특허에 인용된 특허 (4)
Sahba Bahman (Warwick RI) Champlin ; Jr. Harry C. (Hopkinton RI) Cory John M. (Old Lyme CT), All-metal, valve sealing mechanism.
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