Valve trim apparatus having a cavity to receive contaminates from a sealing surface
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-001/38
F16K-001/42
F16K-003/24
F16K-025/04
F16K-025/00
출원번호
US-0700106
(2010-05-25)
등록번호
US-9115814
(2015-08-25)
국제출원번호
PCT/CN2010/073212
(2010-05-25)
§371/§102 date
20121126
(20121126)
국제공개번호
WO2011/147078
(2011-12-01)
발명자
/ 주소
Sun, Zhimin
Gao, Chun
Chen, Zhengyu
출원인 / 주소
EMERSON PROCESS MANAGEMENT (TIANJIN) VALVE CO., LTD.
대리인 / 주소
Marshall, Gerstein & Borun LLP
인용정보
피인용 횟수 :
1인용 특허 :
5
초록▼
A valve trim apparatus comprises a valve seat (216) and a closure member (214) to operatively engage the valve seat (216). One of the closure member (214) and the valve seat (216) includes a plurality of annular ribs (222), and at least one of the valve seat (216) and the closure member (214) define
A valve trim apparatus comprises a valve seat (216) and a closure member (214) to operatively engage the valve seat (216). One of the closure member (214) and the valve seat (216) includes a plurality of annular ribs (222), and at least one of the valve seat (216) and the closure member (214) defines at least one groove (218) to be positioned between at least two of the annular ribs (222) to receive material from a sealing surface (220) between the closure member (214) and the valve seat (216) when the closure member (214) is sealingly engaged with the valve seat (216).
대표청구항▼
1. A valve trim apparatus comprising: a valve seat;a closure member movable along a longitudinal axis to operatively engage the valve seat, wherein one of the closure member or valve seat includes a plurality of annular ribs, the one of the valve seat or closure member defines at least one groove po
1. A valve trim apparatus comprising: a valve seat;a closure member movable along a longitudinal axis to operatively engage the valve seat, wherein one of the closure member or valve seat includes a plurality of annular ribs, the one of the valve seat or closure member defines at least one groove positioned between at least two of the annular ribs to receive material from a sealing surface of the other one of the closure member or valve seat when the closure member is sealingly engaged with the valve seat, and each of the at least two annular ribs possesses a raised surface angled relative to the longitudinal axis prior to engagement of the closure member and the valve seat;an angle of the sealing surface being substantially similar to an angle of the at least two raised surfaces such that the sealing surface sealingly engages the at least two raised surfaces to provide a tight shut-off; anda cage operatively coupled to the plug so that fluid flow through the cage is substantially blocked as the closure member moves toward the valve seat and before the closure member is sealingly engaged with the valve seat. 2. A valve trim apparatus as defined in claim 1, wherein the annular ribs are structured to provide redundant sealing surfaces. 3. A valve trim apparatus as defined in claim 1, wherein the material comprises at least one of particulate or a relatively high viscosity fluid in contact with the sealing surface of the valve seat or closure member prior to being received in the at least one groove. 4. A valve trim apparatus as defined in claim 1, wherein the valve seat is a seat ring and the plurality of annular ribs are integral with the seat ring. 5. A valve trim apparatus as defined in claim 4, wherein the seat ring is clamped adjacent an outlet port of a valve body. 6. A valve trim apparatus as defined in claim 1, wherein each of the raised surfaces is configured to facilitate collection of material in the at least one groove. 7. A valve trim apparatus as defined in claim 6, wherein each of the raised surfaces is angled at about sixty degrees relative to the longitudinal axis. 8. A valve trim apparatus as defined in claim 1, wherein one of the closure member or valve seat comprises metal, carbide or ceramic and the other one of the closure member or valve seat comprises a different material. 9. A valve trim apparatus as defined in claim 1, wherein the raised surfaces are angled in the same direction relative to the longitudinal axis. 10. A valve trim apparatus comprising: a valve seat;a valve closure member, wherein the valve closure member and the valve seat cooperatively engage to define a cavity and move contaminate from a sealing surface of the valve closure member to the cavity as the valve closure member moves along a longitudinal axis toward a sealing engagement with the valve seat, and the cavity is bounded on opposite sides by a first annular protrusion and a second annular protrusion extending from the valve seat, the first annular protrusion possessing a first raised surface configured to engage the valve closure member, the second annular protrusion possessing a second raised surface configured to engage the valve closure member, the first and second raised surfaces being angled in the same direction relative to the longitudinal axis prior to engagement of the closure member and the valve seat;an angle of the sealing surface being substantially similar to an angle of the first raised surface and an angle of the second raised surface such that the sealing surface sealingly engages the first and second raised surfaces to provide a tight shut-off; anda cage configured to provide a flow dead-band zone to protect the sealing surface from erosion, wherein the dead-band zone restricts particulate suspended in a fluid flow prior to engagement of the closure member and the valve seat. 11. A valve trim apparatus as defined in claim 10, wherein the cavity comprises an annular groove on the valve seat. 12. A valve trim apparatus as defined in claim 10, wherein the valve closure member is a plug and the valve seat is a seat ring. 13. A valve trim apparatus as defined in claim 10, wherein the contaminate comprises a relatively high viscosity fluid or a particulate suspended in the fluid. 14. A valve trim apparatus as defined in claim 10, wherein the first annular protrusion and the second annular protrusion are configured to move the contaminate from the sealing surface of the valve seat to the cavity. 15. A valve trim apparatus as defined in claim 14, wherein the annular protrusions are structured to provide redundant sealing surfaces. 16. A valve trim apparatus, comprising: means to control a flow of fluid through a valve; andmeans to remove contaminate from a first sealing surface of the valve as the valve is closed, the means to remove contaminate including a second sealing surface angled relative to a longitudinal axis of the valve;means to collect the removed contaminate, the means to collect the removed contaminate being positioned between a first annular rib having a first raised surface and a second annular rib having a second raised surface, wherein the means to remove the contaminate and the means to collect the removed contaminate are operatively engaged as the valve is closed, and wherein the first and second raised surfaces are angled relative to a longitudinal axis of the valve prior to engagement of the means to remove the contaminate and the means to collect the removed contaminate;an angle of the second sealing surface being substantially similar to an angle of the first raised surface and an angle of the second raised surface such that the second sealing surface sealingly engages the first and second raised surfaces to provide a tight shut-off; andmeans to provide a fluid flow dead-band zone prior to when the valve is closed. 17. A valve trim apparatus as defined in claim 16, wherein the means to remove the contaminate and the means to collect the removed contaminate are integral features of a structure separate from the means to control. 18. A valve trim apparatus comprising: a valve seat;a closure member movable along a longitudinal axis to operatively engage the valve seat, wherein one of the closure member or valve seat includes a plurality of annular ribs, at least one of the valve seat or closure member defines at least one groove positioned between at least two of the annular ribs to receive material from a sealing surface of the closure member or valve seat when the closure member is sealingly engaged with the valve seat, and each of the at least two annular ribs possesses a raised surface angled relative to the longitudinal axis prior to engagement of the closure member and the valve seat;wherein each of the raised surfaces is configured to facilitate collection of material in the at least one groove; andwherein each of the raised surfaces is angled at about sixty degrees relative to the longitudinal axis.
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