CN108317288A - 蝶阀式安全切断阀 - Google Patents

蝶阀式安全切断阀 Download PDF

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Publication number
CN108317288A
CN108317288A CN201710027971.9A CN201710027971A CN108317288A CN 108317288 A CN108317288 A CN 108317288A CN 201710027971 A CN201710027971 A CN 201710027971A CN 108317288 A CN108317288 A CN 108317288A
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China
Prior art keywords
valve
shaft
valve body
plate
valve plate
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
CN201710027971.9A
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English (en)
Inventor
刘维洲
赵伟
王贝贝
李东明
石杰
南海军
李翔
黄楠
王福明
张军
郭亚闯
徐智明
张玲
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.)
BEST ENERGY EQUIPMENT (TIANJIN) Co Ltd
TIANJIN BTER FLUID CONTROL VALVE Co Ltd
Original Assignee
BEST ENERGY EQUIPMENT (TIANJIN) Co Ltd
TIANJIN BTER FLUID CONTROL 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.)
Filing date
Publication date
Application filed by BEST ENERGY EQUIPMENT (TIANJIN) Co Ltd, TIANJIN BTER FLUID CONTROL VALVE Co Ltd filed Critical BEST ENERGY EQUIPMENT (TIANJIN) Co Ltd
Priority to CN201710027971.9A priority Critical patent/CN108317288A/zh
Publication of CN108317288A publication Critical patent/CN108317288A/zh
Pending legal-status Critical Current

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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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

本发明涉及一种蝶阀式安全切断阀，包括：阀体、阀轴、阀板，所述阀体内为轴流式结构通道，上下两端各设置一个偏离阀体中心的轴套，阀体内加工有阀座，所述阀轴穿过轴套和阀板安装在阀体上，阀板与阀轴用卡箍固定，可相对于阀体旋转，阀板与阀座为锥度配合面，采用密封圈密封，所述阀轴上端与切断机构相连，正常工作时，切断机构会卡住阀轴使阀板处在开启状态，工作异常时，切断机构会松开卡住阀轴，在弹簧力的作用下，阀板旋转与阀座贴合，使阀门关闭。有益效果是：轴流式结构通道流通能力强，阀轴处在偏离阀体中心位置能够扩大阀板的转动角度，阀板和阀座锥度面密封可补偿因磨损而造成的泄漏，密封效果好，且便于安装和在线维修。

Description

蝶阀式安全切断阀
技术领域
本发明涉及一种燃气输送设备，尤其涉及一种蝶阀式安全切断阀。
背景技术
天然气输气站压力控制系统主要由安全切断阀、监控调压阀、工作调压阀组成。安全切断阀的阀体是通过法兰与监控调压阀前的管道相连接，阀体上的切断机构（导阀）通过引压信号导管与工作调压阀后的管道相连接，接收下游反馈控制压力信号，控制安全切断阀的开关，将下游压力控制在设定范围之内，保证工作调压阀为下游提供正常工作压力。目前安全切断阀结构多为旋启翻板式或套筒活塞式，由于安全切断阀的频繁工作，这两种形式的不足之处便表现出来，旋启翻板式的缺点是在翻板落下时，在翻板自重和弹簧力作用下，会对密封圈冲击非常大，特别是大口径阀门，极易造成密封圈、翻板及阀座损坏，使安全切断阀可靠性降低、寿命缩短；套筒活塞式虽然没有冲击力，但其最大缺点是切断动作响应时间比较长，反应慢，不利于管道和设备的安全。
发明内容
本发明的目的在于克服上述技术的不足，针对上述问题，提供一种能够降低冲击力和缩短反应时间的蝶阀式安全切断阀。
本发明为实现上述目的，采用以下技术方案：包括：阀体、阀轴、阀板，所述阀体内为轴流式结构通道，上下两端各设置一个偏离阀体中心的轴套，阀体内加工有阀座，所述阀轴穿过轴套和阀板安装在阀体上，阀板与阀轴用卡箍固定，可相对于阀体旋转，阀板与阀座为锥度配合面，采用密封圈密封，所述阀轴上端与切断机构相连，正常工作时，切断机构会卡住阀轴使阀板处在开启状态，工作异常时，切断机构会松开卡住阀轴，在弹簧力的作用下，阀板旋转与阀座贴合，使阀门关闭。其特征是：所述阀体为轴流式结构通道，阀轴偏离阀体中心安装能够扩大阀板的转动角度，阀座与阀体为一体式结构，阀板与阀座两个圆锥表面的配合可实现硬密封，且具有磨损补偿功能。
有益效果是：轴流式结构通道流通能力强，阀轴处在偏离阀体中心位置能够扩大阀板的转动角度，阀板和阀座锥度面密封可补偿因磨损而造成的泄漏，密封效果好，结构简单，便于安装和在线维修。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是蝶阀式安全切断阀示意图。
图2是带有切断机构的蝶阀式安全切断阀示意图。
图3是蝶阀式安全切断阀开启时示意图。
图4是蝶阀式安全切断阀开关闭示意图。
图中：1.阀体，2.阀轴，3.阀板，4.弹簧，5.卡箍，6.密封圈，7.密封圈，8.上轴套，9.阀板密封圈，10. 下轴套，11. 底盖，12. 切断机构。
具体实施方式
下面结合较佳实施例详细说明本发明的具体实施方式。
实施例
详见附图1，一种蝶阀式安全切断阀，包括阀体（1）、阀轴（2）、阀板（3）、弹簧（4）、卡箍（5）、密封圈（6）、密封圈（7）、上轴套（8）、阀板密封圈（9）、下轴套（10）、底盖（11）、切断机构（12）。所述下轴套（10）安装在阀体（1）下端部，用底盖（11）固定，上轴套（8）安装在阀体（1）上端部，阀轴（2）穿过上轴套（8）和阀板（3）安装在下轴套（10）内，下面由底盖（11）定位，阀板（3）与阀轴（2）用卡箍（5）固定在一起，可相对于阀体（1）旋转，阀轴（2）上端部与切断机构（12）相连接，切断机构（12）控制阀轴（2）旋转，阀板（3）与阀座为锥度配合面，采用阀板密封圈（9）密封。工作正常时，手动旋转阀轴至开启位置，此时切断机构会锁紧阀轴使阀板处在开启状态，阀门打开，工作异常时，气体压力或其它外部力量会促使切断机构打开，松开锁紧装置，阀轴在弹簧力的作用下，带动阀板旋转与阀座贴合，使阀门关闭，切断下游气体，保证下游设备安全。
本发明的优选方案是，所述轴流式结构通道流通能力强，阀轴偏离阀体中心安装能够扩大阀板的转动角度，使流通面积增大。
本发明的优选方案是，所述阀板与阀座均为圆锥形面，可补偿锥度密封面和阀板密封圈密封因磨损而造成的泄漏。
本发明的优选方案是，所述阀板安装有密封圈，与阀座形成软密封，阀板与阀座均为圆锥形面可以形成硬密封，软、硬密封相结合，密封效果更好，结构简单，便于安装和在线维修。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的结构作任何形式上的限制。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化和变动，这里无法对所有的实施方式予以穷举。凡是依据本发明的技术实质对以上实施例所作的任何修改、等同变化与修饰，均仍属于本发明的技术方案的范围内。

Claims (6)

1.一种蝶阀式安全切断阀，包括：阀体、阀轴、阀板，所述阀体上下两端各设置一个偏离阀体中心的轴套，阀体内加工有阀座，所述阀轴穿过轴套和阀板安装在阀体上，阀板与阀轴用卡箍固定，可相对于阀体旋转，阀板与阀座为锥度配合面，采用密封圈密封，所述阀轴上端延伸至阀体外部，与切断机构相连。
2.根据权利要求1所述的蝶阀式安全切断阀，其特征是：所述阀轴偏离阀体中心安装能够扩大阀板的转动角度。
3.根据权利要求1所述的蝶阀式安全切断阀，其特征是：所述阀体是轴流式结构通道。
4.根据权利要求1所述的蝶阀式安全切断阀，其特征是：所述阀座与阀体为一体式结构。
5.根据权利要求1所述的蝶阀式安全切断阀，其特征是：所述当密封圈损坏时，阀板与阀座两个圆锥表面的配合实现硬密封。
6.根据权利要求1所述的蝶阀式安全切断阀，其特征是：所述阀板与阀座圆锥表面具有磨损补偿功能。
CN201710027971.9A 2017-01-16 2017-01-16 蝶阀式安全切断阀 Pending CN108317288A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111350833A (zh) * 2020-03-26 2020-06-30 陈少同 一种蝶阀
CN111350830A (zh) * 2020-03-26 2020-06-30 陈少同 一种蝶阀

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4977926A (en) * 1988-09-21 1990-12-18 Stockham Valve Australia Pty. Ltd. Check valve
CN2557762Y (zh) * 2002-06-18 2003-06-25 吴忠仪表股份有限公司 一种偏心蝶阀
CN1884887A (zh) * 2005-06-22 2006-12-27 大丰市燃气设备有限责任公司 智能安全切断机构总成
CN201934738U (zh) * 2011-01-13 2011-08-17 天津市益斯达燃气设备有限公司 一种超压切断阀
CN103671955A (zh) * 2014-01-07 2014-03-26 天津贝特尔流体控制阀门有限公司 天然气旋启式轴流安全切断阀
CN204592323U (zh) * 2015-02-10 2015-08-26 诸暨市博拉什阀门有限公司 一种截断阀
CN206409690U (zh) * 2017-01-16 2017-08-15 天津贝特尔流体控制阀门有限公司 蝶阀式安全切断阀

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4977926A (en) * 1988-09-21 1990-12-18 Stockham Valve Australia Pty. Ltd. Check valve
CN2557762Y (zh) * 2002-06-18 2003-06-25 吴忠仪表股份有限公司 一种偏心蝶阀
CN1884887A (zh) * 2005-06-22 2006-12-27 大丰市燃气设备有限责任公司 智能安全切断机构总成
CN201934738U (zh) * 2011-01-13 2011-08-17 天津市益斯达燃气设备有限公司 一种超压切断阀
CN103671955A (zh) * 2014-01-07 2014-03-26 天津贝特尔流体控制阀门有限公司 天然气旋启式轴流安全切断阀
CN204592323U (zh) * 2015-02-10 2015-08-26 诸暨市博拉什阀门有限公司 一种截断阀
CN206409690U (zh) * 2017-01-16 2017-08-15 天津贝特尔流体控制阀门有限公司 蝶阀式安全切断阀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111350833A (zh) * 2020-03-26 2020-06-30 陈少同 一种蝶阀
CN111350830A (zh) * 2020-03-26 2020-06-30 陈少同 一种蝶阀

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Application publication date: 20180724