CN108194653A - 一种万向浮动阀座高温球阀 - Google Patents

一种万向浮动阀座高温球阀 Download PDF

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Publication number
CN108194653A
CN108194653A CN201711210599.1A CN201711210599A CN108194653A CN 108194653 A CN108194653 A CN 108194653A CN 201711210599 A CN201711210599 A CN 201711210599A CN 108194653 A CN108194653 A CN 108194653A
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Prior art keywords
ring
sealing
floating
valve seat
valve
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CN201711210599.1A
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English (en)
Inventor
应建忠
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Yongjia Xincheng Technology Service Co Ltd
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Yongjia Xincheng Technology Service Co Ltd
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Priority to CN201711210599.1A priority Critical patent/CN108194653A/zh
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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
    • F16K5/061—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 knee-joint
    • 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
    • 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

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

Abstract

本发明涉及一种万向浮动阀座高温球阀，包括阀体、阀座、球体、阀杆、密封件和安装件，球体与阀座具有相互配合的球面密封面；主要是阀座采用万向浮动组合式阀座，所述万向浮动组合式阀座由密封环、浮动环、卡环和压板组成，卡环嵌装在阀体通道内壁的环形槽内，环形槽的轴向宽度大于卡环的轴向厚度，浮动环和压板由螺钉固定安装在卡环两侧，浮动环外圆面与阀体通道内孔壁动密封配合，密封环的两侧端面动密封安装在压板与浮动环的内台阶之间，密封环外圆直径小于浮动环内孔直径，密封环左内侧具有与球体相互配合的球面密封面。在球体关闭过程中，自动调整球体球面密封面与密封环球面密封面的同心度，具有密封性能好、生产成品率高、产品使用寿命长等特点。

Description

一种万向浮动阀座高温球阀
技术领域
本发明属于阀门领域，尤其涉及一种浮动阀座球阀。
背景技术
球阀具有全通径流通、流阻小、启闭方便等优点，广泛应用于国民经济各领域的介质输送管道，其结构主要包括阀体、阀盖、阀座、阀芯、阀杆，阀芯由阀杆安装与阀体内腔，阀芯与阀座组成相互配合的球面密封副，阀座外圆面与阀体通道内孔之间密封配合，由传动装置通过阀杆带动球体90°旋转，实现阀门的启闭操作。其主要缺点是：阀座径向固定安装在阀体通道内壁，阀座中心线理论上固定在阀体通道中心线上，但是，阀芯安装在阀体内腔后，其密封面球心位置与阀座中心线之间或多或少存在着偏差，而且阀芯球面和阀座球面密封面都存在加工误差，导致阀芯球面与阀座球面密封面的同心度存在偏差，使阀芯与阀座配合时密封副圆周方向的密封比压不一致，制约了阀门的密封性能的提高，误差较大时出现泄漏，这是造成现有硬密封球阀出厂压力试验合格率低的主要原因。而且在使用过程中增加球体与阀座密封面的磨损，降低产品使用寿命。
发明内容
本发明的目的是针对现有技术存在的缺点，提供一种能够自动调整球体与阀座配合同心度，密封副圆周密封比压一致性好，密封性能好，产品成品率高，产品使用寿命长的万向浮动阀座高温球阀。
本发明的技术方案包括阀体、阀座、球体、阀杆、密封件和安装件，球体与阀座具有相互配合的球面密封面；主要是阀座采用万向浮动组合式阀座，所述万向浮动组合式阀座由密封环、浮动环、卡环和压板组成，卡环嵌装在阀体通道内壁的环形槽内，环形槽的轴向宽度大于卡环的轴向厚度，浮动环和压板由螺钉固定安装在卡环两侧，浮动环外圆面与阀体通道内孔壁动密封配合，密封环的两侧端面动密封安装在压板与浮动环的内台阶之间，密封环外圆直径小于浮动环内孔直径，密封环左内侧具有与球体相互配合的球面密封面。
本发明的优点是在阀座采用万向浮动组合式阀座，在球体关闭过程中，自动调整球体球面密封面与密封环球面密封面的同心度，使两者球面密封面同心密封配合，达到密封副圆周密封比压均匀一致，具有密封性能好、生产成品率高、产品使用寿命长等特点。
附图说明
图1是本发明的结构示意图。
具体实施方式
如图1所示的万向浮动阀座高温球阀，包括阀体1、阀座、球体10、阀杆、密封件和安装件，球体10与阀座具有相互配合的球面密封面，球体10上固定安装一球面密封环9与阀座组成相互配合的密封副，也可以采用全球体、半球体、V型球体的球面密封面与阀座组成相互配合的密封副；阀座采用万向浮动组合式阀座，所述万向浮动组合式阀座由密封环8、浮动环3、卡环5和压板6组成，卡环5嵌装在阀体1通道内壁的环形槽内，环形槽的轴向宽度大于卡环5的轴向厚度，使卡环5的径向平面与环形槽之间形成轴向浮动腔4，卡环5可以在环形槽内轴向移动，浮动环3和压板6由螺钉12固定安装在卡环5两侧，浮动环3外圆面与阀体1通道内孔壁动密封配合，使浮动环3、压板6和卡环5构成一体在环形槽内轴向移动，浮动环3外圆面与阀体1通道内壁之间采用环形密封圈13密封，密封环8的两侧端面动密封安装在压板6与浮动环3的内台阶之间，密封环8外圆直径小于浮动环3内孔直径，两者之间形成径向浮动腔7，使密封环8可以相对浮动环3径向移动，密封环8左内侧具有与球体10相互配合的球面密封面。密封环8与浮动环3的内台阶之间安装密封圈11，实现两者之间的密封，密封环8与浮动环3的内台阶之间以及密封环8与压板6之间也可以采用镜面硬密封，提高耐高温性能。浮动环3左侧端面与阀体1通道内的径向台阶之间具有与轴向浮动腔4的轴向宽度相等的轴向间隙2。

Claims (1)

1.一种万向浮动阀座高温球阀，包括阀体（1）、阀座、球体（10）、阀杆、密封件和安装件，球体（10）上固定安装一球面密封环（9）与阀座组成相互配合的密封副；其特征是阀座采用万向浮动组合式阀座，所述万向浮动组合式阀座由密封环（8）、浮动环（3）、卡环（5）和压板（6）组成，卡环（5）嵌装在阀体（1）通道内壁的环形槽内，环形槽的轴向宽度大于卡环（5）的轴向厚度，卡环（5）可以在环形槽内轴向移动，浮动环（3）和压板（6）由螺钉（12）固定安装在卡环（5）两侧，浮动环（3）外圆面与阀体（1）通道内孔壁动密封配合，密封环（8）的两侧端面动密封安装在压板（6）与浮动环（3）的内台阶之间，密封环（8）外圆直径小于浮动环（3）内孔直径，两者之间形成径向浮动腔（7），密封环（8）左内侧具有与球体（10）相互配合的球面密封面，密封环（8）与浮动环（3）的内台阶之间以及密封环（8）与压板（6）之间采用镜面硬密封。
CN201711210599.1A 2017-11-28 2017-11-28 一种万向浮动阀座高温球阀 Withdrawn CN108194653A (zh)

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