[특허]Fluid end with carbide valve seat and adhesive dampening interface

[미국특허] Fluid end with carbide valve seat and adhesive dampening interface 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-025/00 F04B-053/00 F04B-053/10 F04B-053/16 F16K-001/42 F16K-015/06
출원번호	US-0014594 (2013-08-30)
등록번호	US-9435454 (2016-09-06)
발명자 / 주소	Blume, George H
출원인 / 주소	Blume, George H
대리인 / 주소	Hamilton, Gary W.
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록 ▼

A tungsten carbide seat for high-pressure oilfield well service pumps is disclosed. A bonding agent, in conjunction with an interference tapered fit between the valve seat and fluid end housing eliminates stresses created in prior art interference fits. Three interface embodiments are disclosed: a shallow taper combined with a shoulder, a steep taper without a shoulder, and a compound surface in which the seat has an external concave surface and the housing surface that mates with the seat has a convex surface.

대표청구항 ▼

1. A fluid end assembly comprising: a fluid end housing;a valve body;a valve seat, wherein said valve seat is formed with a cemented tungsten carbide;wherein: said valve body comprises a first mating surface configured to be received in a nested position against a second mating surface on said valve seat in response to compressive fluid pressure;said valve seat further comprises a third mating surface that is secured by a bonding agent to a fourth mating surface on said fluid end housing, wherein said third and fourth mating surfaces comprise first and second complementary tapers, respectively, and wherein said bonding agent is evenly distributed between said third and fourth tapered mating surfaces by pressure applied to said valve seat during insertion of said valve seat into said fluid end housing; andsaid bonding agent is operable to absorb a portion of said compressive fluid pressure on said valve body when said valve body is compressed in said nested position by said compressive fluid pressure. 2. The fluid end assembly of claim 1 wherein said epoxy bonding agent comprises layer of epoxy between said third and fourth mating surfaces, said layer having a thickness of between 0.001 and 0.010 inches. 3. The fluid end assembly of claim 2, wherein said layer of epoxy is formed by a method comprising: applying a layer of epoxy between said third and fourth mating surfaces, said layer having an initial thickness in excess of 0.010 inches;applying pressure to squeeze a portion of said layer of epoxy out of the space between said third and fourth mating surfaces to form a layer of epoxy having a thickness of between 0.001 and 0.010 inches. 4. A fluid end assembly of claim 1 in which the interface angle between said third mating surface of said seat and said fourth mating surface of said housing does not exceed 2.5 inches taper per foot on the diameter. 5. The fluid end assembly of claim 1 in which the interface angle between said third mating surface of said seat and said fourth mating surface of said housing exceeds 2.5 inches taper per foot on the diameter. 6. A fluid end assembly of claim 5, wherein the interface between said fluid end housing and said valve seat further includes and internal shoulder in said fluid housing that shoulders with the bottom of the valve seat. 7. The fluid end assembly of claim 1, wherein said bonding agent comprises cured epoxy bonding agent. 8. The fluid end assembly of claim 7, wherein said epoxy bonding agent comprises a multi-part adhesive. 9. The fluid end assembly of claim 7, wherein said epoxy bonding agent comprises a single-part adhesive. 10. A fluid end assembly of claim 1 wherein the interface between said fluid end housing and said valve seat further includes and internal shoulder in said fluid housing that shoulders with the bottom of the valve seat. 11. The fluid end assembly of claim 10 wherein said valve seat is formed with a tungsten carbide. 12. The fluid end assembly of claim 10, wherein said bonding agent comprises cured epoxy bonding agent. 13. The fluid end assembly of claim 12 wherein said epoxy bonding agent comprises layer of epoxy between said third and fourth mating surfaces, said layer having a thickness of between 0.001 and 0.010 inches. 14. The fluid end assembly of claim 12, wherein said layer of epoxy is formed by a method comprising: applying a layer of epoxy between said third and fourth mating surfaces, said layer having an initial thickness in excess of 0.010 inches;applying pressure to squeeze a portion of said layer of epoxy out of the space between said third and fourth mating surfaces to form a layer of epoxy having a thickness of between 0.001 and 0.010 inches. 15. A fluid end assembly comprising: a fluid end housing;a valve body;a valve seat, wherein said valve seat is formed with a cemented tungsten carbide;wherein: said valve body comprises a first mating surface configured to be received in a nested position against a second mating surface on said valve seat in response to compressive fluid pressure;said valve seat further comprises a third convex mating surface that is secured by a bonding agent to a fourth concave mating surface on said fluid end housing, wherein said third convex mating surface and fourth concave mating surfaces comprise first and second complementary tapers, respectively, and wherein said bonding agent is evenly distributed between said third convex mating surface and said fourth concave mating surface by pressure applied to said valve seat during insertion of said valve seat into said fluid end housing; andsaid bonding agent is operable to absorb a portion of said compressive fluid pressure on said valve body when said valve body is compressed in said nested position by said compressive fluid pressure.

이 특허에 인용된 특허 (35) 인용/피인용 타임라인 분석

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Frankenberg Alfred A., Bellows balanced valve.
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Toshiya Kamae JP; Hiroki Oosedo JP; Shunsaku Noda JP; Shinji Kouchi JP; Ryuji Sawaoka JP, Epoxy resin compositions, epoxy resin compositions for fiber-reinforced composite materials, and fiber-reinforced composite materials comprising the same.
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Mittleman ; Herbert, Fluid transfer device.
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Wilkinson Bruce S. (Gloucester MA) Bristol John M. (Rye NH), High pressure homogenizer pump.
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Pacht Amos, High pressure pump.
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Stachowiak J. Edward (P.O. Box 79731 Houston TX 77024), High pressure reciprocating pump and valve assembly therefor.
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Stachowiak J. Edward (P.O. Box 79731 Houston TX 77024), High pressure reciprocating pump apparatus.
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Mullaney John J. (Warwick RI), High-speed easy-maintenance split seal.
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Elliott Robert E. (2045 S. Holiday Hill Rd. Midland TX 79703), Liquid end structure for reciprocating pump.
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Crump Joseph B. (Duncan OK) Maddox William K. (Duncan OK), Protective cover assembly with reverse buckling disc.
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Allred Danny K., Pump valve.
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McDuffie Thomas E. (Henderson TX) Bergthold Paul H. (Longview TX), Radially-valve compressor with adjustable clearance.
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Redwine Fletcher H. (Garland TX) Thompson James E. (Richardson TX), Reciprocable pump.
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Redwine Fletcher H. (Garland TX) Thompson James E. (Richardson TX), Reciprocable pump having axially pivotable manifold to facilitate valve inspection.
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Kemp Willard E. (Blue Springs MO), Sealing assembly for valve member.
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Kugelev,Vladimir; Matzner,Mark D., System, method, and apparatus for valve stop assembly in a reciprocating pump.
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Morvant John D., V-shaped seal with anti-extrusion section.
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Korner Jorg P. (Hagen DEX), Valve assembly for high-pressure pumps.
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Blume, George H., Valve guide and spring retainer assemblies.
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Surjaatmadja Jim B. (Duncan OK), Valve having convex sealing surface and concave seating surface.
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Calhoun Carl R. (6200 S. County Rd. 1210 Midland TX 79703), Valve seat and method of repair.
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Adachi Shuhei (Iwata JPX) Inami Junichi (Iwata JPX), Valve seat insert.
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Adachi Shuhei,JPX ; Sakai Hiroyuki,JPX, Valve seat-bonding area structures and valve seat-bonded cylinder head with the structures.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Fluid end with carbide valve seat and adhesive dampening interface 원문보기

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[미국특허] Fluid end with carbide valve seat and adhesive dampening interface 원문보기

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