CN111637236A - 一种超高声速风洞用正圆三偏心蝶阀 - Google Patents

一种超高声速风洞用正圆三偏心蝶阀 Download PDF

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CN111637236A
CN111637236A CN202010631967.5A CN202010631967A CN111637236A CN 111637236 A CN111637236 A CN 111637236A CN 202010631967 A CN202010631967 A CN 202010631967A CN 111637236 A CN111637236 A CN 111637236A
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valve
eccentric
flow channel
sealing
valve plate
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齐大伟
吴斌
陈德江
唐志共
李远明
张孙敏
李泽龙
吕德润
任海军
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Ultra High Speed Aerodynamics Institute China Aerodynamics Research and Development Center
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Ultra High Speed Aerodynamics Institute China Aerodynamics Research and Development Center
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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
    • 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
    • F16K1/16—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
    • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • 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
    • 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
    • F16K1/42—Valve seats

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

本发明公开了一种超高声速风洞用正圆三偏心蝶阀。该正圆三偏心蝶阀密封面回转轴线e为函数曲线，密封面为不规则的斜圆锥，用任意一个垂直于流道及阀门中心线c的平面去截斜圆锥所得图形截面形状为正圆，即半轴A等于半轴B。该正圆三偏心蝶阀可在满足阀门强度刚度、密封比压及不造成运动干涉这三个前提条件下设计不同的函数曲线，获得更合理的啮合角β，使得三偏心蝶阀更易于开启，同时，为了与啮合角β匹配，偏心2尺寸可以设计得更小，从而减小由偏心2带来的偏距，大大降低三偏心蝶阀的开启扭矩，达到减小阀板密封圈与阀体密封座密封面之间的磨损，延长三偏心蝶阀使用寿命的目的。

Description

一种超高声速风洞用正圆三偏心蝶阀
技术领域
本发明属于超高速风洞试验设备技术领域，具体涉及一种超高声速风洞用正圆三偏心蝶阀。
背景技术
超高声速风洞试验设备通常是采用高压下吹、真空排气的方式维持试验的进行，真空排气通常是试验前将真空容器抽吸到指定的真空压力，之后开始试验，试验过程中真空容器压力不断升高，直至升高到一个无法维持风洞试验进行的压力时，试验停止。
随着超高声速风洞设备的发展，试验气体流量越来越大，要求越来越高，如继续采用真空容器的方式将会建设规模巨大的真空容器才能维持试验的进行，无论从成本还是可行性都不是最好的选择。为此提出了组合排气的方式，组合排气方式由真空系统和排气系统两部分组成，其中真空系统提供试验流场建设所需的压力，并维持试验短时间进行。排气系统用来维持风洞试验的长时间进行。
组合排气的方式需要在试验进行过程中快速将真空系统与排气系统联通，维持试验的不间断进行。由于管道直径较大，该快速切换阀门又需具备快速开启功能，因此一般采用三偏心蝶阀。
三偏心蝶阀的阀杆垂直于流道方向的径向轴线a与阀板密封面中心线b沿流道轴向的偏距为偏心1；阀杆回转轴线d与阀体及流道中心线c沿流道径向的偏距为偏心2；密封面回转轴线e与阀体及流道中心线c沿流道径向的偏角α为偏心3，密封面在空间上的结构为以密封面回转轴线e为法线，密封面边界为素线的正圆锥，该正圆锥法线与阀体及流道中心线c成固定偏角α，因此，用任意一个垂直于流道及阀门中心线c的平面去截斜圆锥所得图形截面形状为椭圆，即半轴A不等于半轴B，密封面空间形状可理解成一个以固定轴线回转的正圆锥。阀板密封圈转动轨迹的切线与阀体密封座密封面之间的夹角为啮合角β，固定偏角α会带来固定的啮合角β。
偏心蝶阀的发展从最初的单偏心蝶阀(即中线蝶阀)到双偏心蝶阀，再到三偏心蝶阀是一个开启扭矩不断减小，开启更容易的过程，相较于单偏心蝶阀和双偏心蝶阀，三偏心蝶阀的开启扭矩已大大减小，但是三偏心蝶阀存在的缺点在于不能通过不同工况自由设计合理的啮合角β，从而导致啮合角β偏大，阀板密封圈与阀体密封座密封面不易脱离，增大开启扭矩，尤其在超高速风洞中所使用的三偏心蝶阀通径一般在DN2000以上，开启扭矩一般会高达数十万N·m，执行器的制造成本甚至远高于三偏心蝶阀本身，同时，阀板密封圈与阀体密封座密封面不易脱离也会造成阀板密封圈与阀体密封座密封面间磨损严重，降低三偏心蝶阀使用寿命，传统结构的三偏心蝶阀已不能够适应超高速风洞的要求。
当前，亟需发展一种超高声速风洞用正圆三偏心蝶阀。
发明内容
本发明所要解决的技术问题是提供一种超高声速风洞用正圆三偏心蝶阀。
本发明的超高声速风洞用正圆三偏心蝶阀，包括阀体、阀板、阀板密封圈、压板、内六角螺钉和阀杆；阀体与流道同轴，阀体的密封座上设置有与阀板的密封圈匹配密封面；阀板安装在阀杆上，阀板绕阀杆在阀体内转动；阀板密封圈通过压板压装在阀板上，并通过均布在阀板边缘的内六角螺钉固定，阀板密封圈与阀体密封座上的密封面形成锥面配合，作为阀门的主密封副；其特点是，所述的正圆三偏心蝶阀的阀杆垂直于流道方向的径向轴线a与阀板密封面中心线b沿流道轴向的偏距为偏心1；阀杆回转轴线d与阀体及流道中心线c沿流道径向的偏距为偏心2；密封面回转轴线e与阀体及流道中心线c沿流道径向的偏角α为偏心3；阀板密封圈转动轨迹的切线与阀体密封座密封面之间的夹角为啮合角β；密封面回转轴线e为函数曲线，密封面为不规则的斜圆锥，用任意一个垂直于流道及阀门中心线c的平面去截斜圆锥所得图形截面形状为正圆，即半轴A等于半轴B。
所述的阀板的转动角度范围为0°～90°。
本发明的超高声速风洞用正圆三偏心蝶阀将密封面回转轴线e从固定轴线变为函数曲线，可在满足阀门强度刚度、密封比压及不造成运动干涉这三个前提条件下设计不同的函数曲线，获得更合理的啮合角β，使得三偏心蝶阀更易于开启，同时，为了与啮合角β匹配，偏心2尺寸可以设计得更小，从而减小由偏心2带来的偏距，大大降低三偏心蝶阀的开启扭矩，达到减小阀板密封圈与阀体密封座密封面之间的磨损，延长三偏心蝶阀使用寿命的目的。
附图说明
图1为本发明的超高声速风洞用正圆三偏心蝶阀的立体示意图；
图2为本发明的超高声速风洞用正圆三偏心蝶阀的原理图。
图中，1.阀体 2.阀板 3.阀板密封圈 4.压板 5.内六角螺钉 6.阀杆；
a为阀杆垂直于流道方向的径向轴线；
b为阀板密封面中心线；
c为阀体及流道中心线；
d为阀杆回转轴线；
e为密封面回转轴线；
α为密封面回转轴线e与阀体及流道中心线c沿流道径向的偏角；
β为阀板密封圈转动轨迹的切线与阀体密封座密封面之间的夹角，即啮合角。
具体实施方式
下面结合附图和实施例详细说明本发明。
如图1、图2所示，本发明的超高声速风洞用正圆三偏心蝶阀，包括阀体1、阀板2、阀板密封圈3、压板4、内六角螺钉5和阀杆6；阀体1与流道同轴，阀体1的密封座上设置有与阀板2的密封圈3匹配密封面；阀板2安装在阀杆6上，阀板2绕阀杆6在阀体1内转动；阀板密封圈3通过压板4压装在阀板2上，并通过均布在阀板2边缘的内六角螺钉5固定，阀板密封圈3与阀体1密封座上的密封面形成锥面配合，作为阀门的主密封副；其特征在于，所述的正圆三偏心蝶阀的阀杆6垂直于流道方向的径向轴线a与阀板2密封面中心线b沿流道轴向的偏距为偏心1；阀杆回转轴线d与阀体及流道中心线c沿流道径向的偏距为偏心2；密封面回转轴线e与阀体及流道中心线c沿流道径向的偏角α为偏心3；阀板密封圈3转动轨迹的切线与阀体1密封座密封面之间的夹角为啮合角β；密封面回转轴线e为函数曲线，密封面为不规则的斜圆锥，用任意一个垂直于流道及阀门中心线c的平面去截斜圆锥所得图形截面形状为正圆，即半轴A等于半轴B。
所述的阀板2的转动角度范围为0°～90°。
实施例1
本实施例将正圆三偏心蝶阀应用在超高速风洞中，在满足阀门强度刚度、密封比压及不造成运动干涉这三个前提条件下设计的密封面回转轴线e具有更合理的啮合角β，偏心2的尺寸相较于三偏心蝶阀的偏心2可减小30％～50％，实现了使用较小扭矩开启正圆三偏心蝶阀的目的。

Claims (2)

1.一种超高声速风洞用正圆三偏心蝶阀，包括阀体(1)、阀板(2)、阀板密封圈(3)、压板(4)、内六角螺钉(5)和阀杆(6)；阀体(1)与流道同轴，阀体(1)的密封座上设置有与阀板(2)的密封圈(3)匹配密封面；阀板(2)安装在阀杆(6)上，阀板(2)绕阀杆(6)在阀体(1)内转动；阀板密封圈(3)通过压板(4)压装在阀板(2)上，并通过均布在阀板(2)边缘的内六角螺钉(5)固定，阀板密封圈(3)与阀体(1)密封座上的密封面形成锥面配合，作为阀门的主密封副；其特征在于，所述的正圆三偏心蝶阀的阀杆(6)垂直于流道方向的径向轴线a与阀板(2)密封面中心线b沿流道轴向的偏距为偏心1；阀杆回转轴线d与阀体及流道中心线c沿流道径向的偏距为偏心2；密封面回转轴线e与阀体及流道中心线c沿流道径向的偏角α为偏心3；阀板密封圈(3)转动轨迹的切线与阀体(1)密封座密封面之间的夹角为啮合角β；密封面回转轴线e为函数曲线，密封面为不规则的斜圆锥，用任意一个垂直于流道及阀门中心线c的平面去截斜圆锥所得图形截面形状为正圆，即半轴A等于半轴B。
2.据权利要求1所述的阀板(2)的转动角度范围为0°～90°。
CN202010631967.5A 2020-07-02 2020-07-02 一种超高声速风洞用正圆三偏心蝶阀 Pending CN111637236A (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008256150A (ja) * 2007-04-06 2008-10-23 Kitz Corp 偏心形バタフライバルブ
CN101893103A (zh) * 2009-05-22 2010-11-24 吴树源 一种弹力限位偏心轴蝶阀
CN102865375A (zh) * 2011-07-08 2013-01-09 孙杰 三偏心蝶阀及其制造方法
CN106958665A (zh) * 2017-05-22 2017-07-18 西华大学 正圆截面三偏心蝶阀的设计方法
KR20170108284A (ko) * 2016-03-17 2017-09-27 주식회사 프로발 삼중 편심형 버터플라이밸브
CN212226019U (zh) * 2020-07-02 2020-12-25 中国空气动力研究与发展中心超高速空气动力研究所 一种超高声速风洞用正圆三偏心蝶阀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008256150A (ja) * 2007-04-06 2008-10-23 Kitz Corp 偏心形バタフライバルブ
CN101893103A (zh) * 2009-05-22 2010-11-24 吴树源 一种弹力限位偏心轴蝶阀
CN102865375A (zh) * 2011-07-08 2013-01-09 孙杰 三偏心蝶阀及其制造方法
KR20170108284A (ko) * 2016-03-17 2017-09-27 주식회사 프로발 삼중 편심형 버터플라이밸브
CN106958665A (zh) * 2017-05-22 2017-07-18 西华大学 正圆截面三偏心蝶阀的设计方法
CN212226019U (zh) * 2020-07-02 2020-12-25 中国空气动力研究与发展中心超高速空气动力研究所 一种超高声速风洞用正圆三偏心蝶阀

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