WO2018210037A1 - 一种微扭矩球阀 - Google Patents

一种微扭矩球阀 Download PDF

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Publication number
WO2018210037A1
WO2018210037A1 PCT/CN2018/078431 CN2018078431W WO2018210037A1 WO 2018210037 A1 WO2018210037 A1 WO 2018210037A1 CN 2018078431 W CN2018078431 W CN 2018078431W WO 2018210037 A1 WO2018210037 A1 WO 2018210037A1
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WO
WIPO (PCT)
Prior art keywords
valve
ball
seat
torque
micro
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PCT/CN2018/078431
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English (en)
French (fr)
Inventor
茅岭峰
张清双
施健海
徐志新
Original Assignee
江苏神通阀门股份有限公司
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Publication of WO2018210037A1 publication Critical patent/WO2018210037A1/zh

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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
    • 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
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K27/12—Covers for housings
    • 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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/06—Devices for relieving the pressure on the sealing faces for taps or cocks
    • 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
    • F16K5/0647—Spindles or actuating means
    • 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
    • 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
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus

Definitions

  • the present invention relates to a ball valve, and more particularly to a micro-torque ball valve.
  • the ball valve Due to its small size, simple structure and convenient maintenance, the ball valve is often in contact with the sealing surface of the valve seat and is not easily eroded by the medium and has a long service life. It is widely used in various industries.
  • the existing fixed ball valve has a large torque when it is opened and closed, which affects the operation, and wear and tear at the sealing surface due to long-term friction, which affects the sealing performance.
  • the present invention provides a micro-torque ball valve having a small opening and closing torque and a reliable seal.
  • a micro-torque ball valve comprising a valve body, a ball body is arranged in the valve body cavity, and a valve stem that is interlocked with the ball body and protrudes from above the valve body is disposed in the valve body, the valve The rod is supported and restrained by the valve cover.
  • the ball body is provided with a valve seat on both axial sides of the valve body, a sealing member is arranged radially between the valve seat and the valve body, and an accumulating original is arranged axially, and a sealing is also arranged on the valve seat.
  • a one-way valve is also installed in the valve body, the one-way valve penetrates the valve body and the valve cover, the valve stem can drive the opening and closing of the one-way valve, and the left valve chamber and the right valve chamber of the one-way valve respectively
  • the medium inlet and the cavity of the valve body communicate with each other, and the ball body is fixedly connected with the transmission device, and when the ball rotates, the valve seat can be pushed open instantaneously, so that the valve seat is separated from the ball body.
  • the transmission device is composed of a disc and a steel ball, and the steel ball is installed in the spherical mounting groove on the first end surface of the valve seat, and the pair of mounting grooves are arranged at the corresponding positions of the disc side and the spherical mounting groove, and the steel ball and the mating mounting groove are Pick up.
  • the steel ball is mounted in a mating mounting groove on the side of the disc, and the steel ball abuts the spherical mounting groove.
  • the pressure accumulating original is a spring assembly including a spring seat and a spring mounted between the spring seat and the valve seat.
  • a medium passage is arranged on the valve body, and the medium passage connects the medium inlet with the left valve chamber of the one-way valve, and the pressure relief hole is opened on the one-way valve, and the pressure relief hole connects the right valve chamber of the one-way valve with the middle chamber of the valve body .
  • a groove is arranged on the valve stem to abut the plunger of the one-way valve, and the rotation of the valve stem can push the plunger, thereby opening the one-way valve.
  • the bottom of the valve stem is arranged as a diamond-like boss, and cooperates with a rectangular hole on the sphere, and the angle of the valve stem freely rotating in the rectangular hole of the sphere is ⁇ .
  • the one-way valve is opened, the medium enters the one-way valve from the medium passage and enters the middle cavity from the pressure relief hole, thereby achieving the pressure balance between the medium inlet and the valve body cavity, which is greatly reduced.
  • the force on the valve seat at the entrance of the medium is reduced, and the torque when the valve is opened is reduced; at the same time, the disc in the transmission pushes the valve seat to disengage the ball from the valve seat, and in the subsequent rotation of the ball, The friction between the valve seat and the ball is reduced, and the torque during valve opening is reduced.
  • valve stem Further set the bottom of the valve stem to a diamond-like boss, which cooperates with the rectangular hole on the ball.
  • the valve stem rotates.
  • the ball rotates together.
  • the valve stem simultaneously pushes the ejector rod of the check valve to open the check valve, thereby realizing the function of first releasing the pressure in the middle chamber and rotating the ball behind the ball.
  • This structure further ensures the whole opening process of the valve.
  • the middle chamber is in a state of pressure relief, including the initial moment when the valve is opened, and the above structure can further realize the micro torque opening and closing of the valve.
  • Figure 1 is a schematic structural view of an embodiment
  • a micro-torque ball valve includes a valve body 11 in which a ball body 12 is disposed in a cavity of the valve body 11, and a valve stem 2 that is coupled with the ball body 12 and protrudes from above the valve body 11 is disposed in the valve body 11, and the valve stem 2 passes through the valve
  • the cover 1 is supported and limited.
  • the ball 12 is provided with a valve seat 10 on both axial sides of the valve body 11.
  • a sealing member 13 is arranged radially between the valve seat 10 and the valve body 11, and an accumulator is arranged axially, and the pressure is accumulated.
  • the original component is a spring assembly, including a spring seat 14 and a spring 15 mounted between the spring seat 14 and the valve seat 10; a sealing surface 16 is also disposed on the valve seat 10 to form a sealing pair with the ball 12;
  • the check valve 17 penetrates the valve body 11 and the valve cover 1, the valve stem 2 can drive the opening and closing of the one-way valve 17, the valve body 11 is provided with a medium passage 7, and the medium passage 7 connects the medium inlet 18 and the check valve
  • the left valve chamber 8 is connected, and the valve rod 2 is provided with a groove 6 which abuts against the ejector rod 3 of the one-way valve, and the valve rod 2 rotates to push the ejector rod 3, thereby opening the one-way valve 17, and the one-way valve is opened and vented.
  • the pressure hole 5 and the pressure release hole 5 communicate the check valve right valve chamber 9 with the valve body middle chamber 19, and after the check valve 17 is opened, the medium can enter the medium passage 7 from the medium inlet 18, and then pass the check valve left valve chamber. 8 and the check valve right valve chamber 9 enters the valve body cavity 19; the upper and lower end faces of the ball body 12 are fixedly connected to the transmission device, and when the ball rotates, the valve seat 10 can be pushed open instantaneously, so that the valve seat 10 is separated from the ball body 12, and the transmission device is rounded.
  • the disk 20 and the steel ball 22 are assembled.
  • the steel ball 22 is mounted in the spherical mounting groove 21 on the first end surface 4 of the valve seat 10.
  • the side of the disk 20 is provided with a mating mounting groove 23 at a position corresponding to the spherical mounting groove 21, and the steel ball 22 is paired with the ball.
  • the groove abuts 23, and the steel ball 22 may be attached to the mating mounting groove 23 on the side of the disc, and the steel ball 22 abuts against the spherical mounting groove 21.
  • the bottom of the valve stem 2 is arranged as a diamond-like boss, and cooperates with a rectangular hole on the ball 12, and the angle of the valve stem 2 freely rotating in the rectangular hole of the ball 11 is ⁇ .
  • the valve stem 2 starts to rotate, the valve stem 2 first rotates, and at the same time pushes the plunger 3 of the one-way valve 17 to open the check valve 17, and the medium enters the cavity 19 of the valve body to realize the medium inlet 18 and the valve body cavity.
  • the pressure balance of 19, after rotating the ⁇ angle drives the ball 11 to rotate together, and simultaneously drives the disk 20 to rotate.
  • the steel ball 22 installed in the spherical mounting groove 21 is separated from the mating mounting groove 23, thereby The valve seat 10 is disengaged from the ball 12 to reduce the opening torque of the valve.
  • the valve seat 10 has no contact with the ball 12, and the valve stem 2 continues to rotate until the valve is closed, and the jack 3 enters the recess 6, so that the check valve 17 is closed.

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

Abstract

一种微扭矩球阀，阀体（11）内设置单向阀（17），球体（12）上固定连接传动装置，当球体转动时可瞬时推开阀座（10），使得阀座与球体脱离。在阀杆（2）转动带动阀门开启的过程中，单向阀打开，实现中腔（19）泄压，传动装置可使得阀座与球体脱离，避免密封面摩擦，保证密封性能的同时减小了阀门启闭扭矩。

Description

一种微扭矩球阀 技术领域
本发明涉及一种球阀，特别涉及微扭矩球阀。
 背景技术
球阀由于具有体积小、结构简单、维修方便等特点且阀座密封面与球体密封面常在接触状态，不易被介质冲蚀，使用寿命长，在各行业中得到广泛应用。
目前现有固定式球阀启闭时扭矩偏大，影响操作，且密封面处由于长期摩擦，产生磨损，影响其密封性能。
 技术问题
为了克服现有球阀的上述缺点，本发明提供一种启闭扭矩小、密封可靠的微扭矩球阀。
 技术解决方案
本发明解决其技术问题所采用的技术方案是，一种微扭矩球阀，包括阀体，阀体内腔中设置球体，阀体内还设置有与球体联动并从阀体上方伸出的阀杆,阀杆通过阀盖进行支撑和限位，球体在阀体的轴向两侧设置有阀座，阀座与阀体之间径向设置密封件,轴向设置蓄压原件,阀座上还设置密封面,与球体形成密封副；阀体内还安装一单向阀，单向阀贯穿阀体与阀盖，阀杆可驱动单向阀的启闭，单向阀的左阀腔与右阀腔分别于介质入口以及阀体中腔连通，球体上固定连接传动装置，当球体转动时可瞬时推开阀座，使得阀座与球体脱离。
进一步的，传动装置由圆盘和钢珠组成，钢珠安装在阀座的第一端面上球形安装槽内，圆盘侧面与球形安装槽对应位置上设置配对安装槽，所述钢珠与配对安装槽抵接。
或者，钢珠安装在圆盘侧面的配对安装槽内，钢珠与球形安装槽抵接。
进一步的，蓄压原件为弹簧组件，包括弹簧座以及安装在弹簧座与阀座之间的弹簧。
进一步的，阀体上设置介质通道，介质通道将介质入口与单向阀左阀腔连通，单向阀上开有泄压孔，泄压孔将单向阀右阀腔与阀体中腔连通。
进一步的，阀杆上设置凹槽，与单向阀的顶杆抵接，阀杆转动可推动顶杆，进而开启单向阀。
进一步的，传动装置有了两个，分别固定安装在球体的上下端面。
进一步的，阀杆底部设置为类菱形凸台，与球体上的矩形孔相配合，阀杆在球体的矩形孔内自由转动的角度为α。
 有益效果
本发明的有益效果是：
1、在阀杆转动带动球体开启的过程中，单向阀打开，介质从介质通道进入单向阀并从泄压孔中进入中腔，实现介质入口与阀体中腔的压力平衡，大大减小了介质入口处对阀座的作用力，减小了阀门开启时的扭矩；同时，传动装置中的圆盘推开阀座，使得球体与阀座脱离，在之后的球体转动过程中，减小了阀座与球体之间的摩擦，同时减小了阀门开启过程中的扭矩。
2、进一步的将阀杆底部设置为类菱形凸台，与球体上的矩形孔相配合，在阀杆刚开始转动时，阀杆自转，当转过α角度后再带动球体一起转动，在阀杆自转α角的过程中，阀杆同时推动单向阀的顶杆使得单向阀打开，实现中腔先泄压，球体后转动的功能，这样的结构进一步保证了在阀门整个开启的过程中中腔均是泄压状态，包括阀门开启的初始瞬间，上述结构可以进一步的实现阀门微扭矩启闭。
 附图说明
图1是实施例的结构示意图；
图中：1. 阀盖； 2. 阀杆； 3. 顶杆；4.第一端面；5. 泄压孔；6. 凹槽；7. 介质通道；8. 单向阀左阀腔；9. 单向阀右阀腔；10.阀座； 11.阀体；12.球体；13.密封件；14.弹簧座；15.弹簧；16.密封面；17.单向阀；18.介质入口；19.阀体中腔；20.圆盘；21. 球形安装槽；22.钢珠；23. 配对安装槽。
 本发明的最佳实施方式
一种微扭矩球阀，包括阀体11，阀体11内腔中设置球体12，阀体11内还设置有与球体12联动并从阀体11上方伸出的阀杆2,阀杆2通过阀盖1进行支撑和限位，球体12在阀体11的轴向两侧设置有阀座10，阀座10与阀体11之间径向设置密封件13,轴向设置蓄压原件, 蓄压原件为弹簧组件，包括弹簧座14以及安装在弹簧座14与阀座10之间的弹簧15；阀座10上还设置密封面16,与球体12形成密封副；阀体11内还安装一单向阀17，单向阀17贯穿阀体11与阀盖1，阀杆2可驱动单向阀17的启闭，阀体11上设置介质通道7，介质通道7将介质入口18与单向阀左阀腔8连通，阀杆2上设置凹槽6，与单向阀的顶杆3抵接，阀杆2转动可推动顶杆3，进而开启单向阀17，单向阀上开有泄压孔5，泄压孔5将单向阀右阀腔9与阀体中腔19连通，开启单向阀17后介质可从介质入口18进入介质通道7，进而通过单向阀左阀腔8以及单向阀右阀腔9进入阀体中腔19；球体12上下端面固定连接传动装置，当球体转动时可瞬时推开阀座10，使得阀座10与球体12脱离，传动装置由圆盘20和钢珠22组成，钢珠22安装在阀座10的第一端面4上的球形安装槽21内，圆盘20侧面与球形安装槽21对应位置上设置配对安装槽23，钢珠22与配对安装槽抵接23，也可以将钢珠22安装在圆盘侧面的配对安装槽23内，钢珠22与球形安装槽21抵接。
进一步的，阀杆2底部设置为类菱形凸台，与球体12上的矩形孔相配合，阀杆2在球体11的矩形孔内自由转动的角度为α。在阀杆2刚开始转动时，阀杆2先进行自转，同时推动单向阀17的顶杆3使得单向阀17打开，介质进入阀体中腔19，实现介质入口18与阀体中腔19的压力平衡，当转过α角度后再带动球体11一起转动，同时带动圆盘20转动，随着圆盘20的转动，安装在球形安装槽21内的钢珠22脱离配对安装槽23，进而使得阀座10与球体12脱离，减小阀门的开启扭矩。同理，在阀门关闭的过程中，阀座10与球体12无接触，直至阀门关到位后阀杆2继续自转，顶杆3进入凹槽6，使得单向阀17关闭。

Claims (9)

  1. 一种微扭矩球阀，包括阀体，阀体内腔中设置球体，所述阀体内还设置有与球体联动并从阀体上方伸出的阀杆,阀杆通过阀盖进行支撑和限位，所述球体在阀体的轴向两侧设置有阀座，阀座与阀体之间径向设置密封件,轴向设置蓄压原件,所述阀座上还设置密封面,与球体形成密封副；阀体内还安装一单向阀，所述单向阀贯穿阀体与阀盖，所述阀杆可驱动单向阀的启闭，所述单向阀的左阀腔与右阀腔分别于介质入口以及阀体中腔连通，其特征在于：球体上固定连接传动装置，当球体转动时可瞬时推开阀座，使得阀座与球体脱离。
  2. 如权利要求1所述的微扭矩球阀，其特征在于：所述传动装置由圆盘和钢珠组成，所述钢珠安装在阀座的第一端面上球形安装槽内，所述圆盘侧面与球形安装槽对应位置上设置配对安装槽，所述钢珠与配对安装槽抵接。
  3. 如权利要求2所述的上装式微扭矩球阀，其特征在于：所述钢珠安装在圆盘侧面的配对安装槽内，所述钢珠与球形安装槽抵接。
  4. 如权利要求1所述的微扭矩球阀，其特征在于：所述蓄压原件为弹簧组件，包括弹簧座以及安装在弹簧座与阀座之间的弹簧。
  5. 如权利要求1所述的微扭矩球阀，其特征在于：所述阀体上设置介质通道，所述介质通道将介质入口与单向阀左阀腔连通，所述单向阀上开有泄压孔，所述泄压孔将单向阀右阀腔与阀体中腔连通。
  6. 如权利要求1所述的微扭矩球阀，其特征在于：所述阀杆上设置凹槽，与单向阀的顶杆抵接，阀杆转动可推动顶杆，进而开启单向阀。
  7. 如权利要求1-6中任一项所述的微扭矩球阀，其特征在于：所述传动装置有了两个，分别固定安装在球体的上下端面。
  8. 如权利要求1-6中任一项所述的微扭矩球阀，其特征在于：阀杆底部设置为类菱形凸台，与球体上的矩形孔相配合，阀杆在球体的矩形孔内自由转动的角度为α。
  9. 在阀杆刚开始转动时，阀杆先进行自转，同时推动单向阀的顶杆使得单向阀打开，介质进入阀体中腔，实现介质入口与阀体中腔的压力平衡，当转过α角度后再带动球体一起转动，同时带动圆盘转动，随着圆盘的转动，安装在球形安装槽内的钢珠脱离配对安装槽，进而使得阀座与球体脱离，减小阀门的开启扭矩；同理，在阀门关闭的过程中，阀座与球体无接触，直至阀门关到位后阀杆继续自转，顶杆进入凹槽，使得单向阀关闭。
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CN107830199A (zh) * 2017-10-20 2018-03-23 上海阀门厂股份有限公司 一种阀门撑开机构
CN108561579A (zh) * 2018-03-19 2018-09-21 江苏神通阀门股份有限公司 一种金属密封固定球阀密封副无相对运动的阀座脱离结构
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