RU2015156472A - Изолирующие втулки исполнительного привода со встроенными уплотнениями - Google Patents

Изолирующие втулки исполнительного привода со встроенными уплотнениями Download PDF

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RU2015156472A
RU2015156472A RU2015156472A RU2015156472A RU2015156472A RU 2015156472 A RU2015156472 A RU 2015156472A RU 2015156472 A RU2015156472 A RU 2015156472A RU 2015156472 A RU2015156472 A RU 2015156472A RU 2015156472 A RU2015156472 A RU 2015156472A
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flexible
insulating sleeve
paragraphs
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RU2015156472A
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RU2672535C2 (ru
Inventor
Мередит БЕЛЛ
Трентон Фрэнк ДЖЕКСОН
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Фишер Контролз Интернешнел Ллс
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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
    • 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
    • F16J15/56—Other sealings for reciprocating rods
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/08—Arrangements for covering or protecting the ways
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/2078—Sealing means for the axis of rotation
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/48—Attaching valve members to screw-spindles
    • F16K1/482—Attaching valve members to screw-spindles with a collar on the spindle or a groove in the spindle, by which a fixing element is supported, the spindle reaching into the valve member
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0457—Packings
    • F16K5/0485—Spindle sealing
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0694—Spindle sealings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Sealing Devices (AREA)

Claims (26)

1. Устройство, содержащее:
изолирующую втулку, обладающую центральным отверстием для размещения штока; и
кольцевой паз на одном конце изолирующей втулки, окружающий отверстие, которое вмещает гибкое кольцо для образования уплотнения вокруг штока.
2. Устройство по п. 1, отличающееся тем, что кольцевой паз предназначен для получения жидкости под давлением.
3. Устройство по п. 1, отличающееся тем, что кольцевой паз предназначен для содержания пружины.
4. Устройство по п. 2, отличающееся тем, что кольцевой паз содержит углубление для удерживания пружины.
5. Устройство по п. 1, дополнительно содержащее наружную поверхность, имеющую приподнятый кольцевой элемент для формирования уплотнения вокруг отверстия хомута.
6. Устройство по п. 5, отличающееся тем, что приподнятая кольцевая часть неразрывно связана с изолирующей втулкой.
7. Устройство по любому из пп. 1-6, отличающееся тем, что гибкое кольцо - коническое, для осуществления контакта по кромке со штоком.
8. Устройство по любому из пп. 1-6, отличающееся тем, что гибкое кольцо имеет соответствующую форму для образования поверхностного контакта со штоком.
9. Устройство по любому из пп. 1-6, отличающееся тем, что гибкое кольцо должно содержать рельефный уступ для увеличения гибкости гибкого кольца.
10. Устройство, содержащее:
изолирующую втулку, обладающую центральным отверстием для размещения штока;
встроенный гибкий элемент, установленный неподвижно на одном конце изолирующей втулки и окружающий отверстие; и
паз, окружающий гибкий элемент, причем паз присутствует, чтобы получить силу для отклонения гибкого элемента по направлению к штоку.
11. Устройство по п. 10, отличающееся тем, что упомянутая сила обеспечивается давлением жидкости.
12. Устройство по п. 10, отличающееся тем, что упомянутая сила обеспечивается пружиной.
13. Устройство по п. 10, отличающееся тем, что паз содержит углубление для удержания пружины.
14. Устройство по п. 10, дополнительно содержащее наружную поверхность, имеющую приподнятый кольцевой элемент для формирования уплотнения вокруг отверстия хомута.
15. Устройство по п. 14, отличающееся тем, что приподнятая кольцевая часть неразрывно связана с изолирующей втулкой.
16. Устройство по любому из пп. 10-15, отличающееся тем, что гибкий элемент - конусообразный.
17. Устройство по любому из пп. 10-15, отличающееся тем, что гибкий элемент содержит шарнирный участок.
18. Устройство, содержащее:
средства для направления штока, причем средства направления штока обладают встроенным гибким механизмом для уплотнения вокруг поверхности штока.
19. Устройство по п. 18, отличающееся тем, что средства для уплотнения содержат средства для восприятия силы.
20. Устройство по п. 18, дополнительно содержащее средства для уплотнения хомута.
RU2015156472A 2013-06-10 2014-06-10 Уплотнительная сборка для исполнительного привода (варианты) RU2672535C2 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/914,080 US10260639B2 (en) 2013-06-10 2013-06-10 Actuator bushings having integral seals
US13/914,080 2013-06-10
PCT/US2014/041640 WO2014200967A1 (en) 2013-06-10 2014-06-10 Actuator bushings having integral seals

Publications (2)

Publication Number Publication Date
RU2015156472A true RU2015156472A (ru) 2017-07-14
RU2672535C2 RU2672535C2 (ru) 2018-11-15

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Country Status (6)

Country Link
US (1) US10260639B2 (ru)
EP (1) EP3008353B1 (ru)
CN (3) CN203979630U (ru)
CA (1) CA2914931C (ru)
RU (1) RU2672535C2 (ru)
WO (1) WO2014200967A1 (ru)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10260639B2 (en) * 2013-06-10 2019-04-16 Fisher Controls International Llc Actuator bushings having integral seals
WO2018075221A1 (en) * 2016-10-17 2018-04-26 Fisher Controls International Llc Yoke for rotary valve
IT201700060646A1 (it) * 2017-06-01 2018-12-01 Ali Group Srl Carpigiani Valvola ad azionamento pneumatico per una macchina per la produzione di prodotti alimentari liquidi o semiliquidi e macchina comprendente detta valvola.
JP7464398B2 (ja) * 2020-02-13 2024-04-09 住友重機械工業株式会社 極低温冷凍機およびシール部品
CN117018915A (zh) * 2023-06-15 2023-11-10 深圳市尚水智能股份有限公司 混料装置及包覆机

Family Cites Families (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB219042A (en) * 1923-02-20 1924-07-21 Durham Duplex Razor Co Improvements in knife grinding
US2903011A (en) * 1956-07-09 1959-09-08 Nat Tank Co Reversible motor valves
US3039489A (en) * 1959-07-01 1962-06-19 Buckeye Iron & Brass Works Valve structure
US3108615A (en) 1960-10-03 1963-10-29 Bendix Corp Reaction valve construction
US4171792A (en) * 1974-12-23 1979-10-23 Dresser Industries, Inc. High pressure diaphragm valves
US4354666A (en) * 1980-06-12 1982-10-19 Kerotest Manufacturing Corp. High pressure packless metal diaphragm valve
EP0050949A1 (en) 1980-10-29 1982-05-05 JAMES WALKER & COMPANY LIMITED Combined seal, bearing and wiper/scraper ring
US4351512A (en) * 1981-10-09 1982-09-28 Siver Chester A Valve with yoke and captive gland wrench
FR2549928B1 (fr) 1983-07-29 1987-12-11 Outillage Air Comprime Dispositif de guidage d'etancheite et de raclage de tige de verin
US4867043A (en) 1986-06-30 1989-09-19 Tayco Developments, Inc. End cap for fluid cylinder
US4878677A (en) * 1988-12-15 1989-11-07 Hydrochem Developments Ltd. Shut off seal about a shaft of a device having a side entry into a tank
EP0438285A3 (en) 1990-01-19 1991-12-27 Butterworth Jetting Systems, Inc. Valve assembly for high pressure water shut-off gun
US5230498A (en) * 1990-10-09 1993-07-27 Fisher Controls International, Inc. Live load packing system
US5290010A (en) * 1992-06-12 1994-03-01 Cashco, Inc. Multiple thrust range live loade packing system for stems, shafts, etc.
US5503406A (en) * 1993-11-26 1996-04-02 Neles-Jamesbury Assembly for live loading or valve packings
IL118083A (en) 1996-04-30 1999-11-30 Dorot Valve Manufacturers Multi purpose valve
US5730415A (en) * 1996-09-06 1998-03-24 Sloan Valve Company Flush valve triple seal handle packing
IL126845A (en) * 1997-11-05 2001-10-31 Saginomiya Seisakusho Inc Rotary channel-selector valve
US6050572A (en) 1998-03-09 2000-04-18 Bal Seal Engineering Company, Inc. Rotary cartridge seals with retainer
GB0003462D0 (en) * 2000-02-15 2000-04-05 Control Components Valves
US6664572B2 (en) * 2001-07-23 2003-12-16 Hp&T Products, Inc. Valve seal assemblies and methods
US20030089875A1 (en) * 2001-11-15 2003-05-15 Hall Randy Jerold Control valve stem split guide bushing
US6749174B2 (en) * 2002-09-06 2004-06-15 Delphi Technologies, Inc. Exhaust gas recirculation valve having low drag
RU36718U1 (ru) * 2003-12-08 2004-03-20 Общество с ограниченной ответственностью производственно-научная фирма "ЛГ автоматика" Мембранный привод клапана
TWM253725U (en) * 2004-03-18 2004-12-21 Tzeng-Yuan Chen Airtight packing
CN1563769B (zh) * 2004-04-14 2010-09-29 王培望 阀类的密封装置
US7562859B2 (en) * 2004-08-20 2009-07-21 Stream-Flo Industries Ltd. Gate valve with tongue and groove or bridging seal to annular seat elements
DE102004058302A1 (de) * 2004-09-17 2006-03-23 Bosch Rexroth Aktiengesellschaft Dichtbuchse, hydraulisches Gerät und Rückschlagventil
US7607635B2 (en) * 2005-08-25 2009-10-27 Sloan Valve Company Flush valve handle assembly providing dual mode operation
US20070246677A1 (en) * 2006-04-21 2007-10-25 Bircann Raul A Exhaust gas recirculation valve having self-centering bushing
JP2008045654A (ja) 2006-08-15 2008-02-28 Nok Corp バルブステム用オイルシール
JP2009257366A (ja) 2008-04-14 2009-11-05 Starlite Co Ltd シール付き滑り軸受及びその製造方法
US8205890B2 (en) * 2008-07-08 2012-06-26 Worldwide Oilfield Machine, Inc. Resilient high pressure metal-to-metal seal and method
US8251373B2 (en) 2009-07-17 2012-08-28 GM Global Technology Operations LLC Seal performance for hydrogen storage and supply systems
US20130206538A1 (en) 2009-12-18 2013-08-15 Robert Pecak Actuator Seal with Lubricating Gaps
US8281797B2 (en) * 2009-12-18 2012-10-09 Fisher Controls International Llc Control valve having live loaded packing follower with leak-off and independent secondary seal
US8336849B2 (en) * 2010-02-11 2012-12-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Conical seat shut off valve
CN201973277U (zh) * 2010-12-10 2011-09-14 苏州科迪流体控制设备有限公司 密封衬套旋塞阀结构
US8656942B2 (en) * 2011-03-02 2014-02-25 Fmc Technologies, Inc. Length-adjustable pressure-retaining piping components
CN202266741U (zh) * 2011-08-29 2012-06-06 骆文玲 组合填料密封压套
US10260639B2 (en) * 2013-06-10 2019-04-16 Fisher Controls International Llc Actuator bushings having integral seals
CN203413222U (zh) * 2013-07-12 2014-01-29 北京北高阀门有限公司 用于蝶阀阀轴的密封装置

Also Published As

Publication number Publication date
RU2672535C2 (ru) 2018-11-15
US20140361207A1 (en) 2014-12-11
CN110410574B (zh) 2022-10-14
CN104235486A (zh) 2014-12-24
EP3008353A1 (en) 2016-04-20
CA2914931C (en) 2022-05-10
CA2914931A1 (en) 2014-12-18
CN203979630U (zh) 2014-12-03
CN110410574A (zh) 2019-11-05
WO2014200967A1 (en) 2014-12-18
EP3008353B1 (en) 2019-08-07
US10260639B2 (en) 2019-04-16

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