CN102032389B - 能形成自紧密封的填料内压自密封阀门 - Google Patents

能形成自紧密封的填料内压自密封阀门 Download PDF

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CN102032389B
CN102032389B CN 201010618706 CN201010618706A CN102032389B CN 102032389 B CN102032389 B CN 102032389B CN 201010618706 CN201010618706 CN 201010618706 CN 201010618706 A CN201010618706 A CN 201010618706A CN 102032389 B CN102032389 B CN 102032389B
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valve
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CN102032389A (zh
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董霞
陈清流
乐精华
朱瑞芳
盖广平
杨效礼
张娜
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LANZHOU HIGH PRESSURE VALVE CO Ltd
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Abstract

本发明公开了一种能形成自紧密封的填料内压自密封阀门,包括阀体、填料箱和阀杆,填料箱上设置有填料压紧机构,阀杆上依次套装有支撑环、填料垫和填料,填料与填料垫相接触,填料垫朝向填料的端面为凸起的第一V形面,填料朝向填料垫的端面为凹陷的第二V形面,第一V形面两斜面间的夹角大于第二V形面两斜面间的夹角;支撑环为带孔支撑圈。本发明自密封阀门的填料和填料垫之间采用相啮合的V形面,能够在压力作用下产生变形,形成自紧密封,密封可靠,有效改善了阀门的密封性能。

Description

能形成自紧密封的填料内压自密封阀门
技术领域
本发明属于阀门制造技术领域,涉及一种用于高压临氢装置及高硫天然气气田集输工程等复杂工况下的阀门,包括楔式闸阀、截止阀、平板闸阀等各类阀门,具体涉及一种能形成自紧密封的填料内压密封阀门。
背景技术
高压临氢装置及高硫天然气气田集输工程等复杂工况中使用的阀门,即楔式闸阀、截止阀、止回阀、平板闸阀等各类阀门,采用由填料箱、密封圈、压环、四开环构成的内压自密封结构,该内压自密封结构中的填料垫与填料平面接触,在介质的作用下,填料垫、阀杆与填料之间不能形成自紧密封,导致阀门填料处密封效果不好,易引发安全事故和危害。
发明内容
为了克服上述现有技术中存在的问题,本发明的目的是提供一种能形成自紧密封的填料内压自密封阀门,在介质的作用下,形成自紧密封,改善阀门的密封效果。
为实现上述目的,本发明采取的技术方案是:
一种能形成自紧密封的填料内压自密封阀门,包括阀体、填料箱和阀杆,填料箱上设置有填料压紧机构,阀杆上依次套装有支撑环、填料垫和填料,填料与填料垫相接触,填料垫朝向填料的端面为凸起的第一V形面,填料朝向填料垫的端面为凹陷的第二V形面,第一V形面两斜面间的夹角大于第二V形面两斜面间的夹角;支撑环为带孔支撑圈。
所述的第一V形面两斜面间的夹角与第二V形面两斜面间的夹角之差为8°~12°。
所述的带孔支撑圈包括环形的带孔支撑圈本体,带孔支撑圈本体的内壁和外壁上均加工有密封圈槽,带孔支撑圈本体的一个端面上加工有压力槽。
本发明自密封阀门的填料和填料垫之间采用相啮合的V形面,能够在压力作用下产生变形,形成自紧密封,密封更可靠,有效改善了阀门的密封性能。 
附图说明
图1是本发明自密封阀门的结构示意图;
图2是图1中I处的局部放大图;
图3是本发明自密封阀门中带孔支撑圈的结构示意图;
图4是图3的仰视图。
图中:1.阀杆,2.填料箱,3.填料,4.填料垫,5.带孔支撑圈,6.螺杆,7.螺母,8.填料压板,9.填料压套,10.第一V形面,11.第二V形面,12.O形密封圈,13.带孔支撑圈本体,14.压力槽。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细说明。
如图1和图2所示,本发明自密封阀门的结构,包括安装于阀体内的填料箱2,填料箱2内设置有阀杆1,阀杆1与填料箱2之间设置有填料腔。阀杆1上、沿阀杆1的轴向依次套装有带孔支撑圈5、填料垫4、填料3、填料压套9和填料压板8,填料压板8通过螺母7和螺杆6与填料箱2相连接;带孔支撑圈5位于填料腔的底部,填料垫4与填料3相接触,填料垫4朝向填料3的端面为凸起的第一V形面10;填料3朝向填料垫4的端面为凹陷的第二V形面11,第一V形面10两斜面之间的夹角大于第二V形面11两斜面间的夹角,第一V形面10两斜面间的夹角与第二V形面11两斜面间的夹角之差为8°~12°。
第一V形面10和第二V形面11相啮合,在V形面的尖部形成相应的接触应力。
螺杆6、螺母7、填料压板8和填料压套9构成填料压紧机构。
如图3和图4所示,本发明自密封阀门中带孔支撑圈5的结构,包括环形的带孔支撑圈本体13,带孔支撑圈本体13的内壁和外壁上均加工有密封圈槽,本体14的一个端面上加工有压力槽14。
调节填料压紧机构中的螺母7,使填料3保持向下的压紧状态。当阀体内腔压力升高时,阀体内的介质进入带孔支撑圈5的压力槽14中,推动带孔支撑圈5整体向上移动,带孔支撑圈5推动填料垫4移动,填料垫4在移动过程中向上挤压填料3,而填料3在填料压紧机构的作用下,不能向上移动,此时,第二V形面11在压力的作用下发生变形向两侧分开,紧贴在阀杆1上,实现自紧密封。
本发明自密封阀门能实现自紧密封,有效改善了填料的密封状况,使得阀门的密封性能更可靠。本自密封阀门能广泛应用于高压临氢装置高硫天然气气田集输工程等复杂工况介质管道中。
以上所述的仅是本发明专利的优选实例。应当指出对于阀门技术领域的普通技术人员来说,在本发明专利所提供的技术启示下,还可以做出其它等同变型和改进,也应视为本发明专利的保护范围。

Claims (2)

1.一种能形成自紧密封的填料内压自密封阀门,包括阀体、填料箱和阀杆,填料箱上设置有填料压紧机构,阀杆上依次套装有支撑环、填料垫和填料,其特征在于:所述的填料与填料垫相接触,填料垫朝向填料的端面为凸起的第一V形面,填料朝向填料垫的端面为凹陷的第二V形面,第一V形面两斜面间的夹角大于第二V形面两斜面间的夹角;所述的支撑环为带孔支撑圈,它包括环形的带孔支撑圈本体,带孔支撑圈本体的内壁和外壁上均加工有密封圈槽,带孔支撑圈本体的一个端面上加工有压力槽。
2.根据权利要求1所述的自密封阀门,其特征在于:所述的第一V形面两斜面间的夹角与第二V形面两斜面间的夹角之差为8°~12°。
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CN107575614A (zh) * 2017-10-24 2018-01-12 兰州高压阀门有限公司 一种具有间接防止物料泄漏的多功能连接支架
CN114440000A (zh) * 2021-12-24 2022-05-06 合肥通用机械研究院有限公司 一种用于超高压氢能源阀门的复合填料密封系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531537A (en) * 1980-04-21 1985-07-30 Xomox Corporation Plug valve for reduced leakage
CN2625672Y (zh) * 2003-06-27 2004-07-14 林峰 带可调式组合闸板的闸阀
CN201306517Y (zh) * 2008-12-09 2009-09-09 山东菲特自控阀门制造有限公司 阀杆密封装置
CN201909103U (zh) * 2010-12-31 2011-07-27 兰州高压阀门有限公司 能形成自紧密封的填料内压自密封阀门

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531537A (en) * 1980-04-21 1985-07-30 Xomox Corporation Plug valve for reduced leakage
CN2625672Y (zh) * 2003-06-27 2004-07-14 林峰 带可调式组合闸板的闸阀
CN201306517Y (zh) * 2008-12-09 2009-09-09 山东菲特自控阀门制造有限公司 阀杆密封装置
CN201909103U (zh) * 2010-12-31 2011-07-27 兰州高压阀门有限公司 能形成自紧密封的填料内压自密封阀门

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