WO2014012496A1 - Dispositif de scellement installé dans une vanne et vanne le comportant - Google Patents

Dispositif de scellement installé dans une vanne et vanne le comportant Download PDF

Info

Publication number
WO2014012496A1
WO2014012496A1 PCT/CN2013/079547 CN2013079547W WO2014012496A1 WO 2014012496 A1 WO2014012496 A1 WO 2014012496A1 CN 2013079547 W CN2013079547 W CN 2013079547W WO 2014012496 A1 WO2014012496 A1 WO 2014012496A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
sealing
sealing device
convex portion
concave portion
Prior art date
Application number
PCT/CN2013/079547
Other languages
English (en)
Inventor
Le Wang
Original Assignee
Fisher Jeon Gas Equipment (Chengdu) Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. filed Critical Fisher Jeon Gas Equipment (Chengdu) Co., Ltd.
Priority to RU2015104759A priority Critical patent/RU2639825C2/ru
Priority to BR112015001067A priority patent/BR112015001067A2/pt
Publication of WO2014012496A1 publication Critical patent/WO2014012496A1/fr
Priority to IN58MUN2015 priority patent/IN2015MN00058A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing

Definitions

  • the present invention generally relates to a valve, and more particularly to a sealing device in the valve.
  • the valve is generally used in an industry controlling system to control the flow of the fluid in the system.
  • a typical valve includes a valve stem and a valve seat, wherein a valve port is defined on the valve seat, and the valve stem may move relative to the valve seat so as to control the open, closure or the opening degree of the valve port.
  • a sealing device is needed to be arranged between the valve stem and the valve seat so as to prevent the undesired pressure leakage.
  • Fig.l illustrates a known sealing device 10.
  • the sealing device 10 includes a valve stem 11, a valve seat 12 and an annular groove 13 arranged on the outer surface of the valve stem 11.
  • a sealing member such as an O-ring is positioned into the annular groove 13, thus the sealing member forms a sealing between the valve stem 11 and the valve seat 12 during the operation.
  • the sealing device 10 of Fig.l may have a problem: since the groove structure is formed on the valve stem 11, the manufacturing process of the valve stem 11 is relatively complex and thus has a high cost. Additionally, the groove structure formed on the valve stem 11 reduces the structural integrity of the valve stem 11.
  • Fig.2 illustrates another known sealing device 20.
  • the sealing device 20 includes a valve stem 21 coupled to a diaphragm 26 by coupling members 24 and 25, and a valve seat 22.
  • the valve seat 22 is provided with a groove 23 and the coupling member 24 is provided with a projection 27.
  • the projection 27 restricts a sealing member 28 such as an O-ring into the groove 23, thus the sealing member 28 forms a sealing between the valve stem 21 and the valve seat 22 during the operation.
  • the sealing device 20 of Fig.2 may have a problem: as shown in Fig.2, the gap between the lower surface of the coupling member 24 and the upper surface of the valve seat 22 is relatively large, and the gap between the side surface of the coupling member 24 and the side surface of the valve seat 22 is also relatively large, thus the fluid pressure may be discharged through the gaps due to the failure of the sealing member 28, for example, the aging of the O-ring, which is not desired.
  • the present invention provides a sealing device in a valve, comprising: a first member having a convex portion, a second member having a concave portion and a sealing member; wherein the convex portion of the first member is mated with the concave portion of the second member, and the convex portion of the first member is configured to be received into the concave portion of the second member; the sealing member is arranged between the convex portion of the first member and the concave portion of the second member; and the convex portion of the first member is mated with the concave portion of the second member dynamically and oppositely.
  • the convex portion of the first member being mated with the concave portion of the second member dynamically and oppositely means that one of the first member and the second member is fixed, and the other is movably mated, or both of the first member and the second member are movably mated with each other.
  • the convex portion of the first member has a first circumferential outer surface, a first annular end surface extending radially inward from the edge of the first circumferenti l outer surface and a second circumferential outer surface extending from the inner edge of the first annular end surface towards a direction away from the first circumferential outer surface; and the concave portion of the second member has a first circumferential inner surface, a second annular end surface extending radially inward from the edge of the first circumferential inner surface and a second circumferential inner surface extending from the inner edge of the second annular end surface towards a direction away from the first circumferential inner surface; wherein the first circumferential outer surface and the first circumferential inner surface are sized to form a clearance fit, and the second circumferential outer surface and the second circumferential inner surface are sized to form a clearance fit.
  • the sealing member is an O-ring.
  • the first member is a valve stem and the second member is a valve seat.
  • valve comprising the sealing device in a valve of the present invention.
  • Fig.l shows a known sealing device
  • Fig.2 shows another known sealing device
  • Fig.3 is an exploded view of one embodiment of the sealing device in the valve according to the present invention.
  • Fig.4 is an assembly view of the sealing device of Fig.3;
  • Fig.5 is a sectional view of one embodiment of the valve according to the present invention.
  • Fig.6 shows the pressure difference curve of the known valve
  • Fig.7 shows the pressure difference curve of the valve of Fig.5.
  • the present invention provides a sealing device in a valve, comprising: a first member having a convex portion, a second member having a concave portion and a sealing member; wherein the convex portion of the first member is mated with the concave portion of the second member, and the convex portion of the first member is configured to be received into the concave portion of the second member; the sealing member is arranged between the convex portion of the first member and the concave portion of the second member; and the convex portion of the first member is mated with the concave portion of the second member dynamically and oppositely.
  • the convex portion of the first member being mated with the concave portion of the second member dynamically and oppositely means that, one of the first member and the second member is fixed, and the other is movably mated, or both of the first member and the second member are movably mated with each other.
  • Fig.3 illustrates an exploded view of one embodiment of the sealing device 30 in the valve according to the present invention.
  • the sealing device 30 comprises a first member 31, a second member 32 and a sealing member 39.
  • the first member 31 has a first outer surface 33 arranged in an axial direction (Y-direction as shown in the drawing), a second outer surface 35 arranged inward in a lateral direction (X-direction as shown in the drawing) relative to the first outer surface 33, and a third outer surface 34 arranged between the first outer surface 33 and the second outer surface
  • the second member 32 has a first inner surface 36 arranged in the axial direction (Y-direction as shown in the drawing), a second inner surface 38 arranged inward in the lateral direction (X-direction as shown in the drawing) relative to the first inner surface 36, and a third inner surface 37 arranged between the first inner surface 36 and the second inner surface 38 in the lateral direction.
  • Fig.4 illustrates the assembly view of the sealing device of Fig.3. As shown in Fig.4, when assembled, the sealing member 39 is located in a gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37 so as to provide a sealing.
  • the sealing member 39 is surrounded around the second outer surface 35 of the first member 31, and then the first member 31 together with the sealing member 39 are installed into the second member 32.
  • the first member 31 and the second member 32 may axially move relative to each other, thus the size of the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37 is changed accordingly, but the sealing member 39 is still restricted in the gap.
  • the sealing device 30 of Figs.3 and 4 may have one or more of the following advantages.
  • the manufacturing process of the first member 31 is simple, and the processing cost is relatively low.
  • the first member 31 does not need a groove structure thereon for accommodating the sealing member, the structure integrity of the first member 31 is good, and the working life is relatively long. Additionally, since the first outer surface 33 and the first inner surface 36 form a clearance fit therebetween, and the second outer surface 35 and the second inner surface 38 form a clearance fit therebetween, the fluid pressure can not be discharged between the first outer surface 33 and the first inner surface 36 or between the second outer surface 35 and the second inner surface 38 even in the case of the failure of the sealing member 39. Additionally, the sealing member of Fig.1 has the possibility of disengaging from the groove 13, and the sealing member of Fig.2 trends to disengage from the groove 23 when the first member 21 moves upwards too much relative to the second member 22.
  • the sealing member 39 would not disengage since the sealing member 39 is always restricted in the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37 during the relative movement of the first member 31 and the second member 32.
  • sealing device 30 may be assembled and maintained simply.
  • first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 are cylindrical.
  • the outer diameter of the first outer surface 33 is larger than that of the second outer cylindrical 35, and the inner diameter of the first inner surface 36 is larger than that of the second inner surface 38.
  • the sealing member 39 is an O-ring.
  • first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 may have any suitable shape.
  • the first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 may also be square, rectangular or oval, and so on.
  • the outer diameter of the first outer surface 33 may also be smaller than that of the second outer surface 35, and the inner diameter of the first inner surface 36 may also be smaller than that of the second inner surface 38 accordingly, thus the sealing member 39 is still restricted in the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37.
  • sealing member 39 may have any other structures and materials.
  • the sealing member 3 may be X-ring or PTFE -ring.
  • the lateral direction is perpendicular to the axial direction. In another example, the lateral direction is not perpendicular to the axial direction, for example, the lateral direction has an angle of 85 ° relative to the axial direction.
  • sealing device of the present invention may be used in any application in which a sealing, especially a dynamic sealing, is required.
  • the following will explain the embodiment in which the sealing device is used in a valve.
  • Fig.5 illustrates a sectional view of one embodiment of the valve 50 according to the present invention.
  • the valve 50 is shown as a directing valve, and comprises a diaphragm 51 fixed between a valve body 52 and a valve cover 53, a valve stem 31 coupled to the diaphragm 51, a chamber 54 arranged on one side of the diaphragm 51, a valve seat 32 fixed to the valve body 52 in which a valve port 57 is defined by the valve seat 32, and a valve port gasket 55 biased by a biasing member 56 towards the valve port 57.
  • the valve stem 31 can move relative to the valve seat 32 so as to control the opening degree of the valve port 57.
  • the valve stem 31 has a first outer surface 33 arranged in an axial direction, a second outer surface 35 arranged inward in a lateral direction relative to the first outer surface 33, and a third outer surface 34 arranged in the lateral direction between the first outer surface 33 and the second outer surface 35.
  • the valve seat 32 has a first inner surface 36 arranged in the axial direction, a second inner surface 38 arranged inward in the lateral direction relative to the first inner surface 36, and a third inner surface 37 arranged in the lateral direction between the first inner surface 36 and the second inner surface 38.
  • the sealing member 39 when assembled, is located in the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37 so as to provide a sealing.
  • the first outer surface 33 and the first inner surface 36 form a clearance fit therebetween, and the second outer surface 35 and the second inner surface 38 form a clearance fit therebetween.
  • the sealing member 39 is surrounded around the second outer surface 35 of the valve stem 31, and then the valve stem 31 together with the sealing member 3 are installed into the valve seat 32.
  • valve stem 31 and the valve seat 32 may axially move relative to each other, thus the size of the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37 is changed accordingly, but the sealing member 39 is still restricted in the gap.
  • the valve comprising the sealing device 30 of Figs.3 and 4 may have one or more of the following advantages.
  • valve stem 31 does not need a groove structure thereon for accommodating the sealing member, the manufacturing process of the valve stem 31 is simple, and the processing cost is relatively low;
  • valve stem 31 does not need a groove structure thereon for accommodating the sealing member, the structure integrity of the valve stem 31 is good, and the working life is relatively long. Additionally, since the first outer surface 33 and the first inner surface 36 form a clearance fit therebetween, and the second outer surface 35 and the second inner surface 38 form a clearance fit therebetween, the fluid pressure can not discharge between the first outer surface 33 and the first inner surface 36 or between the second outer surface 35 and the second inner surface 38 even in the case of the failure of the sealing member 39.
  • the amount of the leaking fluid therebetween may be arranged by adjusting the gap between the first outer surface 33 and the first inner surface 36 or between the second outer surface 35 and the second inner surface 38. The smaller the gap is, the smaller the amount of the leaking fluid is.
  • the sealing member of Fig.1 has the possibility of disengaging from the groove 13, and the sealing member of Fig.2 trends to disengage from the groove 23 when the first member 21 moves upwards too much relative to the second member 22.
  • the sealing member 39 would not disengage since the sealing member 39 is always restricted in the gap formed by the second outer surface 35, the first inner surface 36, the third'outer surface 34 and the third inner surface 37 during the relative movement of the valve stem 31 and the valve seat 32.
  • valve 50 comprising the sealing device 30 may be assembled and maintained simply.
  • valve 50 comprising the sealing device 30 has a small pressure difference.
  • Fig.6 shows the pressure difference curve of a known valve. As shown in the drawing, the pressure difference is about 1 psig (pounds per square inch gage) when the flowing speed is 130000 scfh (standard cubic foot per hour).
  • Fig.7 shows the pressure difference curve of the valve of Fig.5.
  • the pressure difference is about 0.5 psig (pounds per square inch gage) when the flowing speed is 130000 scfh (standard cubic foot per hour), which is 50% smaller than that of Fig.6.
  • the reason is that, when the valve stem 31 moves downwards, the friction diameter of the sealing member 39 is on the first inner surface 36 of the valve seat 32, and when the valve stem 31 moves upwards, the sealing member 39 will move upwards together with the valve stem 31 under the action of the pushing movement of the high pressure fluid or remains immobile, thus the friction diameter of the sealing member 39 is on the valve stem 31, thereby the friction force of the valve stem 31 moving downwards is larger than that of the valve stem 31 moving upwards.
  • first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 are cylindrical.
  • the outer diameter of the first outer surface 33 is larger than that of the second outer surface 35, and the inner diameter of the first inner surface 36 is larger than that of the second inner surface 38.
  • the sealing member 39 is an O-ring.
  • first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 may have any suitable shape.
  • the first outer surface 33, the second outer surface 35, the first inner surface 36 and the second inner surface 38 may also be square, rectangular or oval, and so on.
  • the outer diameter of the first outer surface 33 may also be smaller than that of the second outer cylindrical 35, and the inner diameter of the first inner surface 36 may also be smaller than of the second inner surface 38 accordingly, thus the sealing member 39 is still restricted in the gap formed by the second outer surface 35, the first inner surface 36, the third outer surface 34 and the third inner surface 37.
  • sealing member 39 may have any other structures and materials.
  • the sealing member 39 may be X-ring or PTFE -ring.
  • the lateral direction is perpendicular to the axial direction. In another example, the lateral direction is not perpendicular to the axial direction, for example, the lateral direction has an angle of 85 ° relative to the axial direction.
  • valve is the directing valve 50, but the valve according to the present invention may be any other valve in which a sealing is required between the valve stem and the valve seat, for example, a main valve coupled to an actuator.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Check Valves (AREA)

Abstract

La présente invention concerne un dispositif de scellement installé dans une vanne et une vanne le comportant. Le dispositif de scellement installé dans la vanne comprend : un premier élément ayant une partie convexe, un second élément ayant une partie concave et un élément de scellement, la partie convexe du premier élément étant appariée à la partie concave du second élément et la partie convexe du premier élément étant conçue pour être reçue dans la partie concave du second élément ; et l'élément de scellement est agencé entre la partie convexe du premier élément et la partie concave du second élément ; et la partie convexe du premier élément est appariée à la partie concave du second élément, dynamiquement et de façon opposée.
PCT/CN2013/079547 2012-07-20 2013-07-17 Dispositif de scellement installé dans une vanne et vanne le comportant WO2014012496A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU2015104759A RU2639825C2 (ru) 2012-07-20 2013-07-17 Уплотнительное устройство в клапане и клапан с таким уплотнительным устройством
BR112015001067A BR112015001067A2 (pt) 2012-07-20 2013-07-17 dispositivo de vedação em uma válvula, e, válvula
IN58MUN2015 IN2015MN00058A (fr) 2012-07-20 2015-01-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201220359196.X 2012-07-20
CN 201220359196 CN202790876U (zh) 2012-07-20 2012-07-20 阀内的密封装置以及阀

Publications (1)

Publication Number Publication Date
WO2014012496A1 true WO2014012496A1 (fr) 2014-01-23

Family

ID=47818139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/079547 WO2014012496A1 (fr) 2012-07-20 2013-07-17 Dispositif de scellement installé dans une vanne et vanne le comportant

Country Status (5)

Country Link
CN (1) CN202790876U (fr)
BR (1) BR112015001067A2 (fr)
IN (1) IN2015MN00058A (fr)
RU (1) RU2639825C2 (fr)
WO (1) WO2014012496A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113074156A (zh) * 2021-04-15 2021-07-06 华北电力大学 一种加装接触密封的液压换向阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202790876U (zh) * 2012-07-20 2013-03-13 费希尔久安输配设备(成都)有限公司 阀内的密封装置以及阀
DE102015207619A1 (de) * 2015-04-27 2016-10-27 Schaeffler Technologies AG & Co. KG Regelventil zur Regelung eines Fluidflusses

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767086A (en) * 1971-06-15 1973-10-23 Vca Corp Aerosol valve construction for dispensing two fluids
US4530373A (en) * 1983-02-22 1985-07-23 Nupro Company Pressure relief valve
CN2115431U (zh) * 1991-12-11 1992-09-09 富阳电动仪表厂 变节流长度型调节阀
US6575431B2 (en) * 1999-09-14 2003-06-10 Spears Manufacturing Co. Weir-type diaphragm valve with raised arcuate bead
CN202790876U (zh) * 2012-07-20 2013-03-13 费希尔久安输配设备(成都)有限公司 阀内的密封装置以及阀

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367086A (en) * 1964-05-28 1968-02-06 Robert H. Ganz Package forming machine
CN2259528Y (zh) * 1996-04-08 1997-08-13 杨铁立 自密封式阀门
DE10354192B4 (de) * 2003-11-20 2006-06-29 Danfoss A/S Heizkörperventil
CN201739613U (zh) * 2010-08-18 2011-02-09 武昌船舶重工有限责任公司 液压控制通气阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767086A (en) * 1971-06-15 1973-10-23 Vca Corp Aerosol valve construction for dispensing two fluids
US4530373A (en) * 1983-02-22 1985-07-23 Nupro Company Pressure relief valve
CN2115431U (zh) * 1991-12-11 1992-09-09 富阳电动仪表厂 变节流长度型调节阀
US6575431B2 (en) * 1999-09-14 2003-06-10 Spears Manufacturing Co. Weir-type diaphragm valve with raised arcuate bead
CN202790876U (zh) * 2012-07-20 2013-03-13 费希尔久安输配设备(成都)有限公司 阀内的密封装置以及阀

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113074156A (zh) * 2021-04-15 2021-07-06 华北电力大学 一种加装接触密封的液压换向阀

Also Published As

Publication number Publication date
IN2015MN00058A (fr) 2015-10-16
RU2015104759A (ru) 2016-09-10
BR112015001067A2 (pt) 2017-06-27
RU2639825C2 (ru) 2017-12-22
CN202790876U (zh) 2013-03-13

Similar Documents

Publication Publication Date Title
EP2809979B1 (fr) Ensemble de contrôle de débit avec un ensemble anti-rotation pour utilisation avec des vannes de fluide
US9010729B2 (en) Membrane valve
KR20150095754A (ko) 전자 팽창밸브
US8141585B2 (en) Rocker type diaphragm valve
KR20200032266A (ko) 용접된 다이어프램 시트 캐리어를 갖는 다이어프램 밸브
US10877495B2 (en) Pressure loaded regulator with dual diaphragm and redundant seal
WO2015072248A1 (fr) Joint mécanique
CN104358884B (zh) 用于流体阀的密封组件
US20170184204A1 (en) Valve element and high-temperature-oriented valve
WO2014012496A1 (fr) Dispositif de scellement installé dans une vanne et vanne le comportant
JP2015055311A (ja) 制御弁
US10385982B2 (en) Robust in-line valve
JP5369065B2 (ja) 三方弁
US9046098B2 (en) Face sealing annular valve for a fluid-working machine
EP3143316B1 (fr) Clapet
US10253894B2 (en) Fuel tank check valve
WO2011024523A1 (fr) Dispositif d’étanchéité aux agents de contamination
JP2009243522A (ja) 安全弁及びシール構造
JP5483376B2 (ja) コンタミ用シール装置
JP6384246B2 (ja) 空圧作動バルブ
CA2886065A1 (fr) Vanne a haute pression
JP5369136B2 (ja) 弁のシール構造
KR20170086866A (ko) 감압밸브
US20190368418A1 (en) Pressure relief valve
US20160109027A1 (en) Valve seat and valve disc with cascaded geometries

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13820388

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2015104759

Country of ref document: RU

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112015001067

Country of ref document: BR

122 Ep: pct application non-entry in european phase

Ref document number: 13820388

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 112015001067

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20150116