CN108240486A - 一种超低温球阀阀座与阀体的密封结构 - Google Patents

一种超低温球阀阀座与阀体的密封结构 Download PDF

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Publication number
CN108240486A
CN108240486A CN201810225803.5A CN201810225803A CN108240486A CN 108240486 A CN108240486 A CN 108240486A CN 201810225803 A CN201810225803 A CN 201810225803A CN 108240486 A CN108240486 A CN 108240486A
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CN
China
Prior art keywords
lip
sealing ring
groups
arrangement spring
valve body
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.)
Pending
Application number
CN201810225803.5A
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English (en)
Inventor
张清双
茅岭峰
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.)
Jiangsu Shentong Valve Co Ltd
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Jiangsu Shentong Valve 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.)
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Publication date
Application filed by Jiangsu Shentong Valve Co Ltd filed Critical Jiangsu Shentong Valve Co Ltd
Priority to CN201810225803.5A priority Critical patent/CN108240486A/zh
Publication of CN108240486A publication Critical patent/CN108240486A/zh
Pending legal-status Critical Current

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    • 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
    • F16K5/0673—Composite packings
    • 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
    • F16K5/0689—Packings between housing and plug
    • 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
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

本发明公开了一种超低温球阀阀座与阀体的密封机构，包括支撑块、V形弹簧、三组唇形密封圈和密封座，三组唇形密封圈分为上密封圈、中密封圈、下密封圈，中密封圈尾部固定于下密封圈开口，上密封圈尾部固定于中密封开口，三组唇形密封圈收尾相接安装于密封座上，形成一个整体，V形弹簧安装于上密封圈开口沟槽内，支撑块卡在V形弹簧上，V形弹簧提供一个稳定的弹力给唇形密封圈，使唇型密封圈在弹力作用下上下唇面紧压于金属表面。本发明与金属表面共能形成三道密封，且介质压力越高，所能提供的密封能力越强，消除了泄漏的可能性。

Description

一种超低温球阀阀座与阀体的密封结构
技术领域
本发明涉及一种密封结构。
背景技术
目前常用超低温球阀阀座与球体的密封结构为泛塞结构，其由唇形密封圈加弹簧组成，弹簧安装于唇口凹槽内，开口朝向高压侧，经过试验验证，此种结构于金属表面仅能提供一道密封，在长期使用过程中，唇口易发生变形，导致泛塞在沟槽内产生倾斜现象，仍存在泄漏的危险。
发明内容
本发明解决的问题是常用的球阀阀座与球体的密封结构唇口易发生变形，导致泛塞在沟槽内产生倾斜现象，存在泄漏的危险。
为解决上述问题，本发明提供了一种超低温球阀阀座与阀体的密封机构，包括支撑块、V形弹簧、三组唇形密封圈和密封座，三组唇形密封圈分为上密封圈、中密封圈、下密封圈，中密封圈尾部固定于下密封圈开口，上密封圈尾部固定于中密封开口，三组唇形密封圈收尾相接安装于密封座上，形成一个整体，V形弹簧安装于上密封圈开口沟槽内，支撑块卡在V形弹簧上，V形弹簧提供一个稳定的弹力给唇形密封圈，使唇型密封圈在弹力作用下上下唇面紧压于金属表面。
作为本发明的进一步改进，唇型密封圈的材料是聚四氟乙烯。
本发明的球阀阀座与阀体的密封结构与金属表面间共形成三道密封，即使因长期使用过程中第一道密封产生失效，第二第三道密封仍可在压力作用下与金属表面形成良好的密封，大大增强了球阀在超低温工况下的密封性能。本发明的球阀阀座与阀体的密封结构安装于与阀体径向密封处，唇形密封组件开口朝向高压侧，使得压力可以张紧密封唇口，同时补充了弹簧力，增加了唇口与金属表面的接触压力，此结构与金属表面共能形成三道密封，且介质压力越高，所能提供的密封能力越强，消除了泄漏的可能性。
附图说明
图1为球阀阀座与阀体的密封结构示意图
图1中1是支撑块、2是V形弹簧、3是上密封圈、4是中密封圈、5是下密封圈、6是密封座。
具体实施方式
图1示出了本发明的实施方式，一种超低温球阀阀座与阀体的密封机构，包括支撑块、V形弹簧、三组唇形密封圈和密封座，三组唇形密封圈分为上密封圈、中密封圈、下密封圈，中密封圈尾部固定于下密封圈开口，上密封圈尾部固定于中密封开口，三组唇形密封圈收尾相接安装于密封座上，形成一个整体，V形弹簧安装于上密封圈开口沟槽内，支撑块卡在V形弹簧上，V形弹簧提供一个稳定的弹力给唇形密封圈，使唇型密封圈在弹力作用下上下唇面紧压于金属表面。作为本发明的进一步改进，唇型密封圈的材料是聚四氟乙烯。本发明的球阀阀座与阀体的密封结构安装于与阀体径向密封处，唇形密封组件开口朝向高压侧，使得压力可以张紧密封唇口，同时补充了弹簧力，增加了唇口与金属表面的接触压力，此结构与金属表面共能形成三道密封。

Claims (2)

1.一种超低温球阀阀座与阀体的密封结构，包括支撑块、V形弹簧、三组唇形密封圈和密封座，其特征在于：三组唇形密封圈分为上密封圈、中密封圈、下密封圈，中密封圈尾部固定于下密封圈开口，上密封圈尾部固定于中密封开口，三组唇形密封圈首尾相接安装于密封座上，形成一个整体，V形弹簧安装于上密封圈开口沟槽内，支撑块卡在V形弹簧上，V形弹簧提供一个稳定的弹力给唇形密封圈，使唇型密封圈在弹力作用下上下唇面紧压于金属表面。
2.根据权利要求1所述的超低温球阀阀座与阀体的密封结构，其特征在于：唇型密封圈的材料是聚四氟乙烯。
CN201810225803.5A 2018-03-19 2018-03-19 一种超低温球阀阀座与阀体的密封结构 Pending CN108240486A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854308A1 (de) * 1997-01-18 1998-07-22 Argus Gesellschaft mbH Kugelhahn
CN201934669U (zh) * 2011-03-10 2011-08-17 广州宝力特液压密封有限公司 剖分式v形组合圈
CN203717927U (zh) * 2014-02-26 2014-07-16 北京裕泰行新材料科技有限公司 密封圈
CN204459168U (zh) * 2015-01-30 2015-07-08 凯氟隆（厦门）密封件有限公司 一种组合泛塞密封圈
CN208041208U (zh) * 2018-03-19 2018-11-02 江苏神通阀门股份有限公司 一种超低温球阀阀座与阀体的密封结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854308A1 (de) * 1997-01-18 1998-07-22 Argus Gesellschaft mbH Kugelhahn
CN201934669U (zh) * 2011-03-10 2011-08-17 广州宝力特液压密封有限公司 剖分式v形组合圈
CN203717927U (zh) * 2014-02-26 2014-07-16 北京裕泰行新材料科技有限公司 密封圈
CN204459168U (zh) * 2015-01-30 2015-07-08 凯氟隆（厦门）密封件有限公司 一种组合泛塞密封圈
CN208041208U (zh) * 2018-03-19 2018-11-02 江苏神通阀门股份有限公司 一种超低温球阀阀座与阀体的密封结构

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