CN103994241B - 一种控制阀外切口新型密封结构 - Google Patents

一种控制阀外切口新型密封结构 Download PDF

Info

Publication number
CN103994241B
CN103994241B CN201410202746.0A CN201410202746A CN103994241B CN 103994241 B CN103994241 B CN 103994241B CN 201410202746 A CN201410202746 A CN 201410202746A CN 103994241 B CN103994241 B CN 103994241B
Authority
CN
China
Prior art keywords
annular boss
spool
ring
lower sleeve
control valve
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.)
Active
Application number
CN201410202746.0A
Other languages
English (en)
Other versions
CN103994241A (zh
Inventor
马玉山
李虎生
庞忠荣
杨克富
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.)
Wuzhong Instrument Co Ltd
Original Assignee
Wuzhong Instrument 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.)
Filing date
Publication date
Application filed by Wuzhong Instrument Co Ltd filed Critical Wuzhong Instrument Co Ltd
Priority to CN201410202746.0A priority Critical patent/CN103994241B/zh
Publication of CN103994241A publication Critical patent/CN103994241A/zh
Application granted granted Critical
Publication of CN103994241B publication Critical patent/CN103994241B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/243—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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

本发明涉及一种控制阀外切口新型密封结构。包括上套筒(1)、下套筒(4)和阀芯(2)，其特点是：在所述上套筒(1)的下端面上靠近阀芯(2)的一侧设有第一环状凸台，所述下套筒(4)的上端面卡在该环状凸台上，并且在该下套筒(4)的上端面旁的内壁上设有第二环状凸台，该第二环状凸台和前述的第一环状凸台均与所述的阀芯(2)接触从而形成密封腔，在该密封腔内安装有环状的金属密封圈(3)，该金属密封圈(3)的横截面为半圆弧形，并且该半圆弧形的开口背向阀芯(2)。经过试用证明，控制阀采用本发明的密封结构后，控制阀整机控制阀泄漏等级很容易满足ANSI B16.104V级要求。

Description

一种控制阀外切口新型密封结构
技术领域
本发明涉及一种控制阀外切口新型密封结构。
背景技术
如图1所示，传统的套筒控制阀结构主要是靠控制活塞密封环的张力和套筒内壁的紧密配合以及阀芯套筒内壁的粗糙度来实现泄漏量的控制，在高温介质通过阀芯和套筒密封面以及活塞密封环的开口处产生一定的泄漏量，如果活塞密封环的张力小了或套筒以及阀芯密封面的粗糙度、形位公差没有达到要求，其泄漏量很难满足ANSIB16.104Ⅳ级要求，V级更就实现不了。而图2所示结构为阀芯套筒之间采用特氟龙材料制成的平衡密封圈结构密封，该结构可以实现ANSIB16.104V级要求，但是由于平衡密封圈材料使用温度只能到260℃，当介质温度更高时，满足不了工况要求。
发明内容
本发明的目的是提供一种控制阀外切口新型密封结构，能够实现控制阀在高温及高压差时严密切断并且具有较高的泄漏等级。
一种控制阀外切口新型密封结构，包括上套筒、下套筒和阀芯，其特别之处在于：在所述上套筒的下端面上靠近阀芯的一侧设有第一环状凸台，所述下套筒的上端面卡在该环状凸台上，并且在该下套筒的上端面旁的内壁上设有第二环状凸台，该第二环状凸台和前述的第一环状凸台均与所述的阀芯接触从而形成密封腔，在该密封腔内安装有环状的金属密封圈，该金属密封圈的横截面为半圆弧形，并且该半圆弧形的开口背向阀芯。
其中金属密封圈的横截面为半圆形，其材质为镍基高温合金。
其中第一环状凸台与上套筒的轴线之间平行，而第二环状凸台与下套筒的轴线之间垂直。
其中在下套筒上开有通孔，并且该通孔的一端与密封腔连通。
经过试用证明，控制阀采用本发明的密封结构后，控制阀整机控制阀泄漏等级很容易满足ANSIB16.104V级要求，采用该外切口U形密，经过试验可以用在温度425℃，压差4.5MPa的高温高压蒸汽压力调节控制阀中可靠工作。
附图说明
附图1为本发明背景技术的结构示意图；
附图2为本发明背景技术的结构示意图；
附图3为本发明的结构示意图；
附图4为图3中A处的局部放大图。
具体实施方式
如图3、4所示，本发明是一种控制阀外切口新型密封结构，包括上套筒1、下套筒4和阀芯2，在所述上套筒1的下端面上靠近阀芯2的一侧设有第一环状凸台，所述下套筒4的上端面卡在该环状凸台上，并且在该下套筒4的上端面旁的内壁上设有第二环状凸台，该第二环状凸台和前述的第一环状凸台均与所述的阀芯2接触从而形成密封腔，在该密封腔内安装有环状的金属密封圈3，该金属密封圈3的横截面为半圆弧形，并且该半圆弧形的开口背向阀芯2(即朝向图4中右侧)。
其中在下套筒4上开有通孔，并且该通孔的一端与密封腔连通。通过下套筒4上的通孔，可以将阀前压力引入金属密封圈3开口中，促使密封圈产生变形，从而为密封圈密封提供密封比压。
其中金属密封圈3的横截面为半圆形，其材质为Inconel(X-)750。另外第一环状凸台与上套筒1的轴线之间平行，而第二环状凸台与下套筒4的轴线之间垂直。
本发明的工作原理是：
当控制阀关闭时，高温介质从控制阀右侧进入，经过阀芯2、套筒时，阀芯2密封凡尔线与内切口U形的金属密封圈3内侧接触，而内切口U形的金属密封圈3其U形口内受到高压介质的压力作用，产生弹性变形，实现阀芯2与套筒之间的严密切断。

Claims (1)

1.一种控制阀外切口新型密封结构，包括上套筒（1）、下套筒（4）和阀芯（2），其特征在于：在所述上套筒（1）的下端面上靠近阀芯（2）的一侧设有第一环状凸台，所述下套筒（4）的上端面卡在该环状凸台上，并且在该下套筒（4）的上端面旁的内壁上设有第二环状凸台，该第二环状凸台和前述的第一环状凸台均与所述的阀芯（2）接触从而形成密封腔，在该密封腔内安装有环状的金属密封圈（3），该金属密封圈（3）的横截面为半圆形，并且该半圆形的开口背向阀芯（2）；
其中金属密封圈（3）的材质为镍基高温合金；
其中第一环状凸台与上套筒（1）的轴线之间平行，而第二环状凸台与下套筒（4）的轴线之间垂直；
其中在下套筒（4）上开有通孔，并且该通孔的一端与密封腔连通。
CN201410202746.0A 2014-05-14 2014-05-14 一种控制阀外切口新型密封结构 Active CN103994241B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410202746.0A CN103994241B (zh) 2014-05-14 2014-05-14 一种控制阀外切口新型密封结构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410202746.0A CN103994241B (zh) 2014-05-14 2014-05-14 一种控制阀外切口新型密封结构

Publications (2)

Publication Number Publication Date
CN103994241A CN103994241A (zh) 2014-08-20
CN103994241B true CN103994241B (zh) 2016-07-06

Family

ID=51308496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410202746.0A Active CN103994241B (zh) 2014-05-14 2014-05-14 一种控制阀外切口新型密封结构

Country Status (1)

Country Link
CN (1) CN103994241B (zh)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8820708B2 (en) * 2009-07-17 2014-09-02 Fisher Controls International Llc Seal assemblies for use with fluid valves
CN201779286U (zh) * 2010-08-10 2011-03-30 上海阀特流体控制阀门有限公司 平衡式阀芯的自密封硬双阀座
CN201779292U (zh) * 2010-08-10 2011-03-30 上海阀特流体控制阀门有限公司 气动迷宫式调节阀
CN202520971U (zh) * 2011-12-29 2012-11-07 苏州德兰能源科技有限公司 一种阀门用套筒组合
CN202901456U (zh) * 2012-11-22 2013-04-24 浙江贝尔控制阀门有限公司 套筒组合多级降压调节阀
CN203258146U (zh) * 2013-05-24 2013-10-30 上海铂嘉控制阀门有限公司 套筒调节阀

Also Published As

Publication number Publication date
CN103994241A (zh) 2014-08-20

Similar Documents

Publication Publication Date Title
CN204717039U (zh) 无摩擦启闭固定球阀
MX343428B (es) Sello en suspensión para alta temperatura, aplicaciones de alta presión.
GB201319946D0 (en) Valve stem seal arrangement
CN103994241B (zh) 一种控制阀外切口新型密封结构
CN102954275A (zh) 一种顶尖式蒸汽电磁阀
JP6021702B2 (ja) 漏洩防止シール、原子炉冷却材ポンプ
CN203906850U (zh) 高温严密切断控制阀外切口u形密封结构
CN203906849U (zh) 高温严密切断控制阀内切口u形密封结构
CN104265917B (zh) 无泄漏阀门
CN103994234A (zh) 一种控制阀内切口新型密封结构
CA2886065C (en) High-pressure valve
CN203906810U (zh) 高温高压严密切断控制阀轴向u形金属密封结构
CN103994243A (zh) 一种控制阀的新型密封结构
RU2013106582A (ru) Кожух газовой турбины, газовая турбина и способ уплотнения элементов кожуха газовой турбины
CN204805591U (zh) 高温耐磨平板闸阀
CN103994242A (zh) 一种控制阀的轴向密封结构
CN203628011U (zh) 防外漏自密封阀门
CN201896953U (zh) 一种轴流式调节阀
CN203906811U (zh) 活塞式动密封高温严密切断控制阀金属u形密封结构
CN205743833U (zh) 一种高压vr堵
CN107202184B (zh) 活塞式旋启止回阀
CN104976363A (zh) 一种高压阀门
CN103994233A (zh) 一种单座阀
CN205155179U (zh) 膜片式双向密封硬密封蝶阀
CN204253505U (zh) 一种防止液压机活塞杆渗油的密封装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant