CA2184620C - Garniture d'etancheite a faible frottement - Google Patents

Garniture d'etancheite a faible frottement Download PDF

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Publication number
CA2184620C
CA2184620C CA002184620A CA2184620A CA2184620C CA 2184620 C CA2184620 C CA 2184620C CA 002184620 A CA002184620 A CA 002184620A CA 2184620 A CA2184620 A CA 2184620A CA 2184620 C CA2184620 C CA 2184620C
Authority
CA
Canada
Prior art keywords
packing
operating member
ptfe
rings
fluid
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CA002184620A
Other languages
English (en)
Other versions
CA2184620A1 (fr
Inventor
Michel K. Lovell
Randall S. Jackson
Ronald R. Brestel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisher Controls International LLC
Original Assignee
Fisher Controls International LLC
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
Priority claimed from US08/204,637 external-priority patent/US5593166A/en
Application filed by Fisher Controls International LLC filed Critical Fisher Controls International LLC
Publication of CA2184620A1 publication Critical patent/CA2184620A1/fr
Application granted granted Critical
Publication of CA2184620C publication Critical patent/CA2184620C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)
  • Details Of Valves (AREA)

Abstract

L'invention concerne un système de garniture d'étanchéité utilisé sous une charge active, résistante au feu, en deux parties, à faible frottement et étanche aux émissions volatiles (moins de 500 ppm) pour une tige de vanne fonctionnant à des températures allant jusqu'à 450 ~F (232 ~C). Un joint d'étanchéité annulaire inférieur disposé autour de la tige de vanne présente des rondelles en PTFE prises en sandwich entre des anneaux en graphite flexible, ce qui fournit un ensemble résistant au feu et à faible frottement. Un joint d'étanchéité annulaire supérieur disposé autour de la tige de vanne est plus proche de la source de la charge active et il comporte des joints en PTFE en forme de V pour assurer une étanchéité fiable contre les émissions volatiles et un faible frottement. La charge active est optimisée pour maintenir une étanchéité au niveau du joint d'étanchéité supérieur afin que les fuites soient inférieures à 500 ppm, pour réduire au minimum le frottement des joints d'étanchéité supérieur et inférieur, et pour assurer l'étanchéité du joint d'étanchéité inférieur, au cours d'essais de résistance au feu.
CA002184620A 1994-03-02 1995-02-09 Garniture d'etancheite a faible frottement Expired - Lifetime CA2184620C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/204,637 US5593166A (en) 1994-03-02 1994-03-02 Low friction packing
US08/204,637 1994-03-02
PCT/US1995/001617 WO1995023935A1 (fr) 1994-03-02 1995-02-09 Garniture d'etancheite a faible frottement

Publications (2)

Publication Number Publication Date
CA2184620A1 CA2184620A1 (fr) 1995-09-08
CA2184620C true CA2184620C (fr) 2006-09-19

Family

ID=37056968

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002184620A Expired - Lifetime CA2184620C (fr) 1994-03-02 1995-02-09 Garniture d'etancheite a faible frottement

Country Status (1)

Country Link
CA (1) CA2184620C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3779251A1 (fr) * 2019-08-16 2021-02-17 Oliver Twinsafe Valves Limited Soupape dotée d'un système d'étanchéité
US20220235865A1 (en) * 2021-01-22 2022-07-28 Allegheny Valve & Coupling, Inc. Gate valve arrangement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108006314A (zh) * 2017-12-01 2018-05-08 中国寰球工程有限公司 低温球阀逸散性组合填料结构
CN109827005A (zh) * 2019-03-29 2019-05-31 湖北泰和石化设备有限公司 一种超低温阀门逸散性组合填料结构及密封方法
CN120991137B (zh) * 2025-10-21 2026-02-13 东辰智能科技有限公司 一种防泄漏旁路排放阀的密封结构
CN121047998B (zh) * 2025-11-04 2026-03-20 宁波市天基隆智控技术有限公司 基于三阀杆协同承载与双级密封的pds高频球阀结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3779251A1 (fr) * 2019-08-16 2021-02-17 Oliver Twinsafe Valves Limited Soupape dotée d'un système d'étanchéité
US20220235865A1 (en) * 2021-01-22 2022-07-28 Allegheny Valve & Coupling, Inc. Gate valve arrangement

Also Published As

Publication number Publication date
CA2184620A1 (fr) 1995-09-08

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MKEX Expiry

Effective date: 20150209