CN101886706A - 介质力自密封闸板阀门 - Google Patents

介质力自密封闸板阀门 Download PDF

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Publication number
CN101886706A
CN101886706A CN2009100669518A CN200910066951A CN101886706A CN 101886706 A CN101886706 A CN 101886706A CN 2009100669518 A CN2009100669518 A CN 2009100669518A CN 200910066951 A CN200910066951 A CN 200910066951A CN 101886706 A CN101886706 A CN 101886706A
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China
Prior art keywords
flashboard
medium
chamber
pressure
valve
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Pending
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CN2009100669518A
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English (en)
Inventor
朱玉璞
杨绍华
张国莉
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CHANG CHUN HIGH MEDIUM PRESSURE VALVE LIMITED-LIABILITY Co
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CHANG CHUN HIGH MEDIUM PRESSURE VALVE LIMITED-LIABILITY Co
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Priority to CN2009100669518A priority Critical patent/CN101886706A/zh
Publication of CN101886706A publication Critical patent/CN101886706A/zh
Pending legal-status Critical Current

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Abstract

本发明涉及介质力自密封闸板阀门，在阀体两平行密封面之间，采用由进口闸板、出口闸板、内闸板和阻尼装置组成的可密封腔体，腔体可沿管道轴向微量伸缩，进口和出口闸板上开有介质流通孔，内闸板可将出口闸板介质流通孔密封。闸板关闭到位后腔体内介质压强产生的力使腔体伸长，阀体密封面和闸板密封面紧密接确，因闸板内腔的侧面面积比管道截面面积大，形成密封比压，切断介质。阀门开启时内闸板先开启出口闸板介质流通孔，内腔压强下降，在外压强作用下腔体缩短，密封面分离，闸板提起，介质流通。

Description

介质力自密封闸板阀门
技术领域：机械，流体控制
背景技术：原阀门都是靠人力、电力和气力或其它外加力实现密封比压，发明改变了力的来源，利用管道内介质自身压力形成密封比压，实现阀门的内密封。
发明内容：在阀体两平行密封面之间，采用由进口闸板、出口闸板、内闸板和阻尼装置组成的可密封腔体，腔体可沿管道轴向微量伸缩，进口和出口闸板上开有介质流通孔，内闸板可将出口闸板介质流通孔密封。阻尼装置使阀门关闭到位后内闸板密封住出口闸板介质流通孔，闸板腔内产生与管道介质相等的压强，阀门开启时内闸板先开启出口闸板介质流通孔，闸板腔内瞬间压强下降。闸板关闭到位后腔体内介质压强产生的力使腔体伸长，阀体密封面和闸板密封面紧密接触，因闸板内腔的侧面面积比管道截面面积大，形成密封比压，切断介质。阀门开启时内闸板先开启出口闸板介质流通孔，内腔压强下降，在外压强作用下腔体缩短，密封面分离，闸板提起，介质流通。该阀门开关过程中密封面是分离状态，无接触磨擦力，开关力小，密封面磨损小。
附图说明：附图只画出阀体部分，其它部分与通用阀门相同。附图所画状态是阀门关闭状态。附图中A阀体；B阀杆；C O型密封圈；D O型密封圈；E出口闸板；F进口闸板；G内闸板架；H内闸板；I O型密封圈；J弹簧阻尼装置。
具体实施方式：由进口闸板和出口闸板组成的可密封腔体，是两金属材料的园柱形壳体，壳体间用O形密封圈密封，出口闸板介质流通孔腔内侧有密封面与内闸板密封面配合实现密封。阻尼装置采用弹簧阻尼。

Claims (1)

1.介质力自密封闸板阀门：阀体是两平行密封面结构，闸板是由进口闸板、出口闸板和内闸板组成的可密封腔体，腔体可沿管道轴向微量伸缩，闸板关闭到位后腔体内介质压强产生的力使腔体伸长，阀体密封面和闸板密封面紧密接触，形成密封比压，切断介质。
CN2009100669518A 2009-05-14 2009-05-14 介质力自密封闸板阀门 Pending CN101886706A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100669518A CN101886706A (zh) 2009-05-14 2009-05-14 介质力自密封闸板阀门

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100669518A CN101886706A (zh) 2009-05-14 2009-05-14 介质力自密封闸板阀门

Publications (1)

Publication Number Publication Date
CN101886706A true CN101886706A (zh) 2010-11-17

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CN2009100669518A Pending CN101886706A (zh) 2009-05-14 2009-05-14 介质力自密封闸板阀门

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CN (1) CN101886706A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954241A (zh) * 2012-11-14 2013-03-06 张建伟 压力密封先导式超高压闸阀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102954241A (zh) * 2012-11-14 2013-03-06 张建伟 压力密封先导式超高压闸阀
CN102954241B (zh) * 2012-11-14 2014-02-12 张建伟 压力密封先导式超高压闸阀

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Addressee: Changchun high and medium pressure valve Co., Ltd. Zhu Yupu

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Application publication date: 20101117