WO2008141545A1 - Robinet-vanne piloté à pression moyenne-haute - Google Patents

Robinet-vanne piloté à pression moyenne-haute Download PDF

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Publication number
WO2008141545A1
WO2008141545A1 PCT/CN2008/070509 CN2008070509W WO2008141545A1 WO 2008141545 A1 WO2008141545 A1 WO 2008141545A1 CN 2008070509 W CN2008070509 W CN 2008070509W WO 2008141545 A1 WO2008141545 A1 WO 2008141545A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pilot
gate
high pressure
pressure
Prior art date
Application number
PCT/CN2008/070509
Other languages
English (en)
French (fr)
Inventor
Liyan Zhu
Zuoyi Wang
Original Assignee
Liyan Zhu
Zuoyi Wang
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 Liyan Zhu, Zuoyi Wang filed Critical Liyan Zhu
Priority to JP2010600016U priority Critical patent/JP3160465U/ja
Priority to US12/601,528 priority patent/US20110266471A1/en
Priority to KR2020097000022U priority patent/KR20100002164U/ko
Publication of WO2008141545A1 publication Critical patent/WO2008141545A1/zh

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
    • F16K3/02—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 flat sealing faces; Packings therefor
    • F16K3/16—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/18—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
    • F16K3/188—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of hydraulic forces
    • 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
    • F16K3/02—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 flat sealing faces; Packings therefor
    • F16K3/16—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/18—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
    • 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
    • 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
    • F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves

Definitions

  • the present invention relates to a gate valve with a pilot valve for a large diameter in the medium and high pressure field.
  • the purpose of the invention is to provide a pilot-type medium-high pressure gate valve, which effectively reduces valve opening difficulty and pressure wear due to fluid pressure by means of pilot unloading, and eliminates cavitation damage technical solution.
  • the pilot type medium and high pressure gate valve comprises: a valve stem connecting the shutter and a valve body, wherein the lower part of the valve stem is provided with a pilot pressure relief valve, and the lower part of the pilot pressure relief valve has a balance The cavity, the valve core installed in the balance chamber is located between the valve body and the back pressure spring, and the valve core has a damping hole communicating with the valve inlet and the balance chamber.
  • the pilot type medium and high pressure gate valve wherein the side of the sealing surface of the valve core is a spherical surface, a tapered surface or a plane.
  • the pilot type medium high pressure gate valve, the pilot pressure relief valve comprises a pilot spool and a pilot back pressure spring
  • valve stem In contact with the other side of the pilot back pressure spring is the valve stem.
  • the pilot type medium-high pressure gate valve the bottom of the valve body has a concentric limit gear corresponding to the gate plate and/or the gate plate or the pilot pressure relief valve has a gate plate displacement slide.
  • the upper pilot unloading valve 6 pressure is at the valve inlet pressure ⁇ , the pilot unloading valve 6 opens the overflow, so that the spool opens quickly and relieves pressure, at the same time, the spool 8
  • the pressure fluid in the balance chamber is quickly relieved due to the inward retraction due to the differential pressure. After the pressure is released, the pressure wear caused by the large pressure on one side is eliminated. Without the side pressure, the valve stem body 9 and the valve core 8 are driven upward by the valve stem 4 to make the valve easy to open.
  • the invention reduces or even eliminates the pressure between the gate and the valve body caused by the fluid, thereby effectively solving the problem that the gate valve opening force and the cavitation damage have not been solved for many years, so that the present invention creates the medium-high pressure fluid on-off control. In terms of aspect, it shows a remarkable technical superiority.
  • the extension slide is moved in the opposite direction to the spool 8, pressed toward the valve outlet, and the spool 8
  • Figure 1 is a schematic view of the structure of the product. Among them: 1. Flat nut, 2. Handwheel assembly, 3. Gland, 4.
  • Valve stem 5. valve body, 6 pilot pressure relief valve, 7. back pressure spring, 8. valve core, 9. gate, 10. Sealing ⁇ , 11. Concentric limit gear, 12. Bolt, 13. Spool damping hole.
  • Pilot-type medium-high pressure gate valve the composition of which includes: valve stem connecting the gate 9 4, valve body 5
  • the lower part of the valve stem is equipped with a pilot pressure relief valve 6
  • the lower part of the valve stem and the bottom of the pilot pressure relief valve have a balance chamber 14
  • the spool 8 installed in the balance chamber is located between the valve body 5 and the back pressure spring 7, and the spool 8 has a orifice 13 communicating with the valve inlet and the balance chamber 14.
  • one side of the sealing surface of the valve core is a spherical surface, a tapered surface or a plane.
  • the pilot type medium high pressure gate valve, the pilot pressure relief valve comprises a pilot spool and a pilot back pressure spring
  • valve stem In contact with the other side of the pilot back pressure spring is the valve stem.
  • the gate or pilot pressure relief valve is displaced along the slide along the opposite direction of the spool.
  • Pilot-type medium-high pressure gate valve the composition of which includes: valve body 5, the conventional accessories of valve body 5 also include: flat nut
  • Handwheel assembly 2. Gland 3.
  • Sealing ports 10 are also provided between the mating surfaces. Bolts for the gland and body connection 12
  • the spool has a spool damping hole 13, and the valve body 5
  • the bottom has a concentric limit 11 for limiting the spool body.
  • the hand wheel assembly 2 is mounted on the gland 3 by a flat nut 1 Upper, the gland 3 is mounted on the valve body by bolts, the valve stem 4 and the hand wheel assembly 2
  • valve stem Connected, the lower end of the valve stem is sequentially connected with the pilot pressure relief valve and the gate, and the balance chamber in the shutter is equipped with a back pressure spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Details Of Valves (AREA)
  • Sliding Valves (AREA)

Description

说明书 先导式中高压闸阀
技术领域
[1] 本发明创造涉及一种中高压领域大通径的带有先导阀的闸阀。
背景技术
[2] 目前， 闸阀绝大多数均以楔式闸板或平行闸板依靠流体压力及楔紧力对闸门进 出口密封为主。 因为其运动方向与流体垂直， 因而当压力较高， 通径较大吋， 在一侧压力的作用下， 摩擦力很大， 所以在开启瞬间需要比较大的操纵力大， 密封面也损害较快。 由于磨损导致阀的泄漏， 直接影响了阀的寿命和工程的安 全使用周期。 闸阀的压力磨损， 是自有闸阀以来一直无法解决的问题， 人们认 为， 一侧流体有压力， 闸板就会被推向阀体， 克服压力下摩擦力的启动扭矩变 大是不可避免的， 压力存在下发生的闸板和阀体之间的磨损也是不可避免的。 并且阀的通径越大、 压力越高， 当然压力磨损和气蚀就越严重， 这也是闸阀的 寿命终结主要原因。
[3] 同吋， 传统的阀板在开启瞬间因流体汽蚀而影响寿命。 为此， 有很多专利技术 釆用了在阀板和阀口堆焊不同的高硬材料等方法， 伹仍不能有效地解决上述问 题。
对发明的公开
技术问题
[4] 本发明创造的目的是提供一种先导式中高压闸阀， 该阀通过先导卸荷的方式， 有效地减轻了由于流体压力造成的阀门开启困难和压力磨损， 消除了汽蚀损害 技术解决方案
[5] 先导式中高压闸阀， 其组成包括： 连接闸板的阀杆、 阀体， 所述的阀杆下部装 有先导卸压阀、 所述的先导卸压阀下部的闸板中具有平衡腔， 装在平衡腔中的 阀芯位于所述的阀体和背压弹簧之间， 所述的阀芯上具有连通阀入口和所述的 平衡腔的阻尼孔。 [6] 所述的先导式中高压闸阀， 所述的阀芯密封面一侧为球面、 锥面或平面。
[7] 所述的先导式中高压闸阀， 所述的先导卸压阀包括先导阀芯及其先导背压弹簧
， 与所述的先导背压弹簧的另一侧接触的是所述的阀杆。
[8] 所述的先导式中高压闸阀， 所述的阀体的底部具有与所述的闸板对应的同心限 位档和 /或所述的闸板或者先导卸压阀上具有闸板位移滑道。
有益效果
[9] 1. 当阀杆 4向上运动吋， 先导阀的阀体内背压簧压力减氐， 当阀芯体 9
上先导卸荷阀 6压力氐于阀门进口压力吋， 先导卸荷阀 6开启溢流， 使阀芯迅速打开卸压， 同吋， 阀芯 8
由于压差作用下向内缩回， 平衡腔内的压力流体迅速泄压。 泄压后， 消 除了一侧较大压力造成的压力磨损， 没有侧压力的情况下， 随着阀杆 4 带动阀芯体 9和阀芯 8向上使阀门轻松打开。
减轻甚至消除了流体带来的闸板和阀体之间侧压力的从而有效地解决了 多少年来一直未能解决的闸阀开启力大和汽蚀损坏问题， 使得本发明创 造在中高压流体通断控制方面， 更显现出显著的技术优越性。
[10] 1. 当阀杆 4向下运动吋， 闸板 9到达阀体同心限位档 11
处， 由阀杆提供的力通过先导背压弹簧使先导卸荷阀 6 关闭。 压力流体通过阀芯阻尼孔 13进入闸板 9
中的平衡腔。 在流体压力和预压弹簧 7力的作用下， 闸板 9
延滑道做与阀芯 8反向移动， 压向阀门出口， 阀芯 8
压向阀门入口一侧的密封面， 从而使阀门控制的压力流体隔断。 对于不 设滑道的阀门， 由同心限位档限定闸板位置。
[11] 1. 通过阀杆控制先导阀的开启和关闭， 实现闸板工作全过程的压力平衡， 消除了压力磨损。
2.
附图说明
[12] 附图 1是本产品的结构示意图。 其中： 1.扁螺母、 2.手轮总成、 3.压盖、 4.
阀杆、 5.阀体、 6先导卸压阀、 7.背压弹簧、 8.阀芯、 9.闸板、 10. 密封圏、 11.同心限位档、 12.螺栓、 13.阀芯阻尼孔。
本发明的最佳实施方式
[13] 先导式中高压闸阀， 其组成包括： 连接闸板 9的阀杆 4、 阀体 5
、 所述的阀杆下部装有先导卸压阀 6
、 所述的阀杆下部并且是先导卸压阀底部的闸板中具有平衡腔 14
， 装在平衡腔中的阀芯 8位于所述的阀体 5和背压弹簧 7之间， 所述的阀芯 8 上具有连通阀入口和所述的平衡腔 14的阻尼孔 13。
本发明的实施方式
[14] 实施例 2：
[15] 实施例 1
所述的先导式中高压闸阀， 所述的阀芯密封面一侧为球面、 锥面或平面。
[16] 实施例 3：
[17] 实施例 1或 2
所述的先导式中高压闸阀， 所述的先导卸压阀包括先导阀芯及其先导背压弹簧
， 与所述的先导背压弹簧的另一侧接触的是所述的阀杆。
[18] 实施例 4：
[19] 以上实施例所述的先导式中高压闸阀， 所述的阀体的底部具有与所述的闸板对 应的同心限位档 11。
[20] 所述的闸板与先导阀结合部或者先导阀与阀杆结合部具有滑道， 当阀门关闭吋
， 闸板或者先导卸压阀沿着滑道做与阀芯相反方向的位移。
[21] 这两种结构都能保证不会偏压， 能减轻阀杆的弯矩， 改善受力状态。
[22] 实施例 5：
[23] 先导式中高压闸阀， 其组成包括： 阀体 5， 阀体 5的常规附件还包括： 扁螺母
1、 手轮总成 2、 压盖 3。 与其连接的阀杆 4， 安装在阀杆 4底部的先导卸压阀 6、 安装在先导卸压阀底部的闸板 9、 阀芯 8装在背压弹簧 7和阀体 5
之间、 各配合面上还装有密封圏 10。 压盖和阀体连接的螺栓 12
。 所述的阀芯上具有阀芯阻尼孔 13， 阀体 5
的底部带有对阀芯体限位的同心限位档 11。 手轮总成 2由扁螺母 1装在压盖 3 上， 压盖 3由螺栓装在阀体上， 阀杆 4与手轮总成 2
连接， 所述的阀杆下端顺次与先导卸压阀及闸板连接， 闸板中的平衡腔内装有 背压弹簧。

Claims

权利要求书 一种先导式中高压闸阀， 其组成包括： 连接闸板的阀杆、 阀体， 其特征是 ： 所述的阀杆下部装有先导卸压阀、 所述的先导卸压阀下部的闸板中具有 平衡腔， 装在平衡腔中的阀芯位于所述的阀体和背压弹簧之间， 所述的阀 芯上具有连通阀入口和所述的平衡腔的阻尼孔。
2.根据权利要求 1
所述的先导式中高压闸阀， 其特征是： 所述的阀芯密封面一侧为球面、 锥 面或平面。
3 . 根据权利要求 1或 2
所述的先导式中高压闸阀， 其特征是： 所述的先导卸压阀包括先导卸压阀 芯及其先导背压弹簧， 与所述的先导背压弹簧的另一侧接触的是所述的阀 杆。
4 . 根据权利要求 1或 2
所述的先导式中高压闸阀， 其特征是： 所述的阀体的底部具有与所述的闸 板对应的同心限位档和 /或所述的闸板或者先导阀上具有闸板位移滑道。
5 . 根据权利要求 3
所述的先导式中高压闸阀， 其特征是： 所述的阀体的底部具有与所述的闸 板对应的同心限位档和 /或所述的闸板或者先导阀上具有闸板位移滑道。
PCT/CN2008/070509 2007-05-24 2008-03-16 Robinet-vanne piloté à pression moyenne-haute WO2008141545A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2010600016U JP3160465U (ja) 2007-05-24 2008-03-16 パイロット中高圧力ゲートバルブ
US12/601,528 US20110266471A1 (en) 2007-05-24 2008-03-16 Piloted middle-high pressure gate valve
KR2020097000022U KR20100002164U (ko) 2007-05-24 2008-03-16 선도식 중고압 게이트 밸브

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720116291.6 2007-05-24
CNU2007201162916U CN201028020Y (zh) 2007-05-24 2007-05-24 先导式中高压闸阀

Publications (1)

Publication Number Publication Date
WO2008141545A1 true WO2008141545A1 (fr) 2008-11-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/070509 WO2008141545A1 (fr) 2007-05-24 2008-03-16 Robinet-vanne piloté à pression moyenne-haute

Country Status (5)

Country Link
US (1) US20110266471A1 (zh)
JP (1) JP3160465U (zh)
KR (1) KR20100002164U (zh)
CN (1) CN201028020Y (zh)
WO (1) WO2008141545A1 (zh)

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CN101865342A (zh) * 2010-07-27 2010-10-20 浙江瑞格铜业有限公司 表前阀中伸缩管与阀体的连接结构及连接方法

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CN201028020Y (zh) * 2007-05-24 2008-02-27 朱力艳 先导式中高压闸阀
DE102009005318B3 (de) * 2009-01-16 2010-09-30 Schwing, Friedrich, Dipl.-Ing. Verfahren zur Förderung breiiger Massen und Pumpvorrichtung zur Förderung breiiger Massen
KR101234687B1 (ko) * 2010-07-19 2013-02-19 키밸브기술 주식회사 자동 압력평형 조절 기구
CN102094986B (zh) * 2011-01-23 2013-06-12 邱金全 超高压微扭矩无泄漏阀门
CN102155572B (zh) * 2011-04-27 2012-09-05 北京众博达石油科技有限公司 用于电磁阀的阀芯阻尼装置
CN102537392B (zh) * 2012-03-06 2013-03-20 苏州道森钻采设备股份有限公司 先导式闸阀
CN102954241B (zh) * 2012-11-14 2014-02-12 张建伟 压力密封先导式超高压闸阀
CN103925382B (zh) * 2014-03-25 2016-06-29 南通市电站阀门有限公司 一种先导式电站闸阀
CN104534114B (zh) * 2015-01-26 2017-08-01 浙江德卡控制阀仪表有限公司 先导式双向双闸板高压闸阀
GB2540371B (en) * 2015-07-14 2017-07-05 Hawa Valves (India) Private Ltd Pressure balancing gate valve
CN107061776A (zh) * 2017-04-25 2017-08-18 重庆科特工业阀门有限公司 强制双密封平板闸阀
KR102046148B1 (ko) * 2018-08-27 2019-11-18 스피나 시스템즈 주식회사 강의 요약본을 제공하는 전자칠판

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