WO2018058753A1 - 一种阀门密封面防冲蚀结构 - Google Patents

一种阀门密封面防冲蚀结构 Download PDF

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Publication number
WO2018058753A1
WO2018058753A1 PCT/CN2016/105621 CN2016105621W WO2018058753A1 WO 2018058753 A1 WO2018058753 A1 WO 2018058753A1 CN 2016105621 W CN2016105621 W CN 2016105621W WO 2018058753 A1 WO2018058753 A1 WO 2018058753A1
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WO
WIPO (PCT)
Prior art keywords
valve
sealing surface
sleeve
core
valve seat
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Application number
PCT/CN2016/105621
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English (en)
French (fr)
Inventor
李岑文达
李伟
Original Assignee
李岑文达
李伟
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.)
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Publication date
Application filed by 李岑文达, 李伟 filed Critical 李岑文达
Priority to US15/744,897 priority Critical patent/US10563785B2/en
Publication of WO2018058753A1 publication Critical patent/WO2018058753A1/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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/04—Arrangements for preventing erosion, not otherwise provided for
    • 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
    • F16K1/16—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
    • F16K1/24—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 valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the 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
    • 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
    • F16K3/246—Combination of a sliding valve and a lift valve
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/445—Mechanical actuating means with exterior sleeve

Definitions

  • the invention relates to a valve sealing surface anti-erosion structure
  • the present invention relates to the technical field of regulating valve sealing structures, and more particularly to a valve sealing surface anti-erosion structure.
  • the medium continuously erodes the sealing surface of the valve core through the orifice of the valve sleeve, causing non-uniform erosion on the sealing surface of the valve core end, and is eroded after the valve is closed A gap occurs between the portion of the sealing surface of the valve plug and the sealing surface of the valve seat.
  • the existing regulating valve has the following defects: (1) The valve adjusts the medium ⁇ , the front end of the valve core changes the throttle area, and the medium parameter is adjusted, and the sealing surface of the front end of the valve core is always in the high-speed throttling medium. In the strong impact, the sealing surface of the valve core will be damaged by erosion after a period of use, and the erosion damage of the sealing surface is uneven. The valve is closed and the part is washed away. A gap is formed in the seat sealing surface, resulting in an internal leak. (2) Due to the occurrence of internal leakage and the large differential pressure, the sealing surfaces of the valve plug and the seat will be severely damaged at the same time, and the valve can no longer be sealed.
  • the object of the present invention is to overcome the shortcomings of the prior art and to provide a regulating medium that is not only safe and reliable.
  • the flow rate and can ensure the valve sealing surface anti-erosion structure with high adjustment precision, tight closing and greatly prolonging the service life of the valve after long-term use.
  • a valve sealing surface anti-erosion structure comprising a valve body, a valve seat, a valve core, a valve sleeve and a valve stem, wherein the valve body is provided with a cavity
  • the left end portion and the lower end portion of the valve body are respectively provided with a medium inlet and a medium outlet, and a valve seat mounting hole is arranged in the valve body between the medium outlet and the cavity, and a valve seat is arranged in the valve seat mounting hole, and the valve seat top is arranged
  • the surface is provided with an annular table, and the outer side surface of the annular table is a sealing surface A disposed at an angle with the horizontal plane.
  • the valve body is further provided with a valve sleeve extending from the top to the bottom, and the lower end surface of the valve sleeve is fixed to the valve seat.
  • a plurality of orifices are uniformly distributed on the cylinder surface of the valve sleeve and at the lower end portion of the valve sleeve, and the valve core is disposed in the valve sleeve, and the outer wall of the valve core is in contact with the inner wall of the valve sleeve, the valve core
  • the bottom of the bottom portion is provided with an annular flange on the outer side thereof, and the inner side surface of the annular flange is a sealing surface B disposed at an angle with the horizontal plane, and the sealing surface B and the sealing surface A are both in a ring shape, and the sealing surface B and the sealing surface
  • the angle difference between A is 2 ⁇ 5°
  • the valve stem is disposed in the valve sleeve and above the valve core, and the valve stem is connected to the valve core.
  • valve seat The upper surface of the valve seat is welded with a cemented carbide layer.
  • the lower surface of the valve core is welded with a cemented carbide layer.
  • valve stem is flexibly connected to the valve core.
  • the present invention has the following advantages: (1) The present invention completely solves the problem that the inner leakage of the regulating valve occurs after a period of use, and the leakage flow increases as the turn of the turn increases. (2) It fully satisfies the requirement that the regulating valve can close the tight working condition after long-term use, and the utility model can significantly prolong the service life of the valve, greatly reduce the maintenance and repair of the valve, avoid the loss caused by the leakage of the medium and replace it. The cost of valves and spare parts.
  • the invention can be widely applied in very severe situations (such as boiler feed water pump recirculation minimum flow regulating valve, steam turbine high and low pressure bypass regulating valve, high pressure difference reheater desuperheating water regulating valve, etc.), in the actual operation of the power plant
  • very severe situations such as boiler feed water pump recirculation minimum flow regulating valve, steam turbine high and low pressure bypass regulating valve, high pressure difference reheater desuperheating water regulating valve, etc.
  • FIG. 1 is a schematic structural view of a valve of the present invention in a snoring state
  • FIG. 2 is a schematic structural view of the valve of the present invention in a closed state
  • FIG. 3 is a partial enlarged view of a portion I of FIG. 1;
  • FIG. 4 is a partially enlarged schematic view of a portion II of FIG. 2; [0013] FIG.
  • FIG. 5 is a schematic structural view of a conventional regulating valve
  • a valve sealing surface anti-erosion structure includes a valve body 1, a valve seat 2, a valve body 3, a valve sleeve 4, and a valve stem 5, which is inside the valve body 1
  • a cavity 6 is provided, and a left end portion and a lower end portion of the valve body 1 are respectively provided with a medium inlet 7 and a medium outlet 8, and a valve seat mounting hole is provided in the valve body 1 between the medium outlet 8 and the cavity 6,
  • the valve seat A valve seat 2 is disposed in the mounting hole, and a top surface of the valve seat 2 is provided with an annular table 9, and an outer surface of the annular table 9 is a sealing surface A10 disposed at an angle with a horizontal plane, and the valve body 1 is further provided with an upper surface
  • the lower end surface of the valve sleeve 4 is fixed to the outer edge of the valve seat 2, and the plurality of orifices 11 are evenly distributed on the cylinder surface of the valve sleeve 4 at the lower end of the valve
  • the bottom of the valve body 3 and on the outer side thereof are provided with an annular flange 12, which is inside the annular flange 12.
  • the side surface is a sealing surface B13 disposed at an angle with the horizontal plane, and the sealing surface B13 and the sealing surface A1 0 are both ring-shaped and sealed.
  • the angle difference between B13 and the sealing surface A10 is 2 ⁇ 5°.
  • valve seat 2 The upper surface of the valve seat 2 is welded with a cemented carbide layer; the lower surface of the valve core 3 is welded with a cemented carbide layer.
  • the valve stem 5 is disposed in the valve sleeve 4 and above the valve core 3, and the valve stem 5 is flexibly connected with the valve core 3 to ensure that the valve core is freely aligning when the valve is closed, so that the valve core 3 is Sealing surface B13 and valve seat 2 dense
  • the cover A10 is tightly coupled to ensure a tight seal.
  • the working process of the present invention is as follows:
  • the regulating valve is used to adjust the medium flow rate ⁇ , when the valve core 3 is moved upward, the number of the throttle holes 11 that are turned on increases, and most of the medium passes through the orifice 11 and the valve sleeve 4 in sequence.
  • the inner hole, the valve seat 2, and the medium outlet 8 flow out; when the valve core 3 is moved downward, the number of the throttle holes 11 that are turned on is reduced, and only a small portion of the medium passes through the orifice 11, the inner hole of the valve sleeve 4, and the valve.
  • the seat 2, the medium outlet 8 flows out, thereby adjusting the medium parameters.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Abstract

一种阀门密封面防冲蚀结构，它包括阀体(1)、阀座(2)、阀芯(3)、阀套(4)和阀杆(5)，阀体(1)内且位于介质出口(8)和型腔(6)之间设置有阀座安装孔，阀座安装孔内设置有阀座(2)，阀座(2)的顶表面设置有环形台(9)，环形台(9)外侧面为与水平面呈夹角设置的密封面A(10)，阀芯(3)的底部且位于其外侧上设置有环形凸缘(12)，环形凸缘(12)的内侧面为与水平面呈夹角设置的密封面B(13)，阀杆(5)设置于阀套(4)内且位于阀芯(3)的上方。该阀门密封面防冲蚀结构不仅能安全可靠的调节介质流量，而且能确保阀门在长期使用后仍具有高调节精度，其关闭严密，极大延长了阀门使用寿命。

Description

说明书 发明名称：一种阀门密封面防冲蚀结构 技术领域
[0001] 本发明涉及调节阀密封结构的技术领域， 特别是一种阀门密封面防冲蚀结构。
背景技术
[0002] 目前， 大多数火力发电厂和石化企业所选用的调节阀对阀门关闭后密封要求都 不高即允许阀门有小量的泄漏， 但对于要求关闭严密的工况的调节阀， 国内外 阀门制造厂家也没有找到保护、 防止密封面被损坏的有效的措施和方法， 都是 直接用阀芯下端面外侧和阀座的斜表面作为密封面， 如图 5所述为现有调节阀的 密封结构， 在阀门调节过程中， 介质经过阀套的节流孔连续不断地冲蚀阀芯端 部密封面， 对阀芯端部密封面产生非均匀冲蚀， 在阀门关闭吋， 被冲蚀的阀芯 密封面部分与阀座密封面之间就会出现间隙。
[0003] 由此可知现有调节阀存在以下缺陷： （1) 阀门在调节介质吋， 阀芯前端起到 改变节流面积， 调节介质参数的作用， 阀芯前端密封面一直处于高速节流介质 的强烈冲击之中， 阀芯密封面在使用一段吋间后， 就会被冲蚀损坏， 而这种密 封面冲蚀损坏是不均匀的， 阀门在关闭吋， 被冲蚀部分与原有的阀座密封面就 会形成间隙， 导致出现内漏。 （2) 由于出现内漏而且此吋压差很大， 阀芯和阀 座密封面将同吋被严重冲坏， 从此阀门再也不能密封。 （3) 由于节流调节部分 损坏， 阀门不能进行正常调节， 影响系统的正常运行。 （4) 由于阀门在使用很 短吋间就出现泄漏， 并随着使用吋间的增加， 泄漏量也随着增大， 这种情况一 直要持续到机组一个小修期的吋间， 才能对阀门进行处理， 这将给用户带来很 大的经济损失 （高温高压介质流失， 并增加锅炉补水） ， 其损失将远远超过阀 门自身的价值。 （5) 由于选用阀门的结构不适合此种使用工况， 即使更换新的 备件， 也不能根治此种事情的出现， 阀门将承受很大的损坏， 这将增加阀门的 维修量、 更换阀门和备件的工作量以及其它费用。
技术问题
[0004] 本发明的目的在于克服现有技术的缺点， 提供一种不仅能安全可靠的调节介质 流量， 而且能确保阀门在长期使用后仍具有高调节精度、 关闭严密、 极大延长 阀门的使用寿命的阀门密封面防冲蚀结构。
问题的解决方案
技术解决方案
[0005] 本发明的目的通过以下技术方案来实现： 一种阀门密封面防冲蚀结构， 它包括 阀体、 阀座、 阀芯、 阀套和阀杆， 所述的阀体内设置有型腔， 阀体的左端部和 下端部分别设置有介质入口和介质出口， 阀体内且位于介质出口和型腔之间设 置有阀座安装孔， 阀座安装孔内设置有阀座， 阀座的顶表面设置有环形台， 环 形台外侧面为与水平面呈夹角设置的密封面 A， 所述的阀体内还设置有由上往下 贯穿型腔的阀套， 阀套的下端面固定于阀座外边缘上， 阀套的柱面上且位于阀 套的下端部均匀分布有多个节流孔， 所述的阀芯设置于阀套内， 阀芯的外壁与 阀套的内壁接触， 阀芯的底部且位于其外侧上设置有环形凸缘， 环形凸缘的内 侧面为与水平面呈夹角设置的密封面 B， 密封面 B和密封面 A均呈环形状， 且密 封面 B与密封面 A之间的角度差为 2~5°， 所述的阀杆设置于阀套内且位于阀芯的 上方， 阀杆与阀芯连接。
[0006] 所述的阀座的上表面堆焊有硬质合金层。
[0007] 所述的阀芯的下表面堆焊有硬质合金层。
[0008] 所述的阀杆与阀芯柔性连接。
发明的有益效果
有益效果
[0009] 本发明具有以下优点： （1) 本发明彻底地解决了调节阀在使用一段吋间后就 会出现内漏， 并随着吋间的增长， 漏流量越大的问题。 （2) 完全满足了调节阀 在长期使用后都能关闭严密的工况要求， 同吋显著延长阀门的使用寿命， 极大 减少阀门的维护和维修量， 避免了介质漏流产生的损失以及更换阀门和备件的 费用。 （3) 本发明能够广泛应用在十分恶劣的场合 （如锅炉给水泵再循环最小 流量调节阀、 汽轮机高低压旁路调节阀、 高压差再热器减温水调节阀等） ， 经 在电厂的实际使用， 完全达到了电厂提出的性能要求， 现一直还在运行使用， 性能很好。 对附图的简要说明
附图说明
[0010] 图 1为本发明阀门处于打幵状态的结构示意图；
[0011] 图 2为本发明阀门处于关闭状态的结构示意图；
[0012] 图 3为图 1的 I部局部放大视图；
[0013] 图 4为图 2的 II部局部放大示意图；
[0014] 图 5为现有调节阀的结构示意图；
[0015] 图中， 1-阀体， 2-阀座， 3-阀芯， 4-阀套， 5-阀杆， 6-型腔， 7-介质入口， 8-介 质出口， 9-环形台， 10-密封面 A， 11-节流孔， 12-环形凸缘， 13-密封面 B。
本发明的实施方式
[0016] 下面结合附图对本发明做进一步的描述， 本发明的保护范围不局限于以下所述
[0017] 如图 1~4所示， 一种阀门密封面防冲蚀结构， 它包括阀体 1、 阀座 2、 阀芯 3、 阀 套 4和阀杆 5， 所述的阀体 1内设置有型腔 6， 阀体 1的左端部和下端部分别设置有 介质入口 7和介质出口 8， 阀体 1内且位于介质出口 8和型腔 6之间设置有阀座安装 孔， 阀座安装孔内设置有阀座 2， 阀座 2的顶表面设置有环形台 9， 环形台 9外侧 面为与水平面呈夹角设置的密封面 A10， 所述的阀体 1内还设置有由上往下贯穿 型腔 6的阀套 4， 阀套 4的下端面固定于阀座 2外边缘上， 阀套 4的柱面上且位于阀 套 4的下端部均匀分布有多个节流孔 11， 所述的阀芯 3设置于阀套 4内， 阀芯 3的 外壁与阀套 4的内壁接触， 阀芯 3的底部且位于其外侧上设置有环形凸缘 12， 环 形凸缘 12的内侧面为与水平面呈夹角设置的密封面 B13， 密封面 B13和密封面 A1 0均呈环形状， 且密封面 B13与密封面 A10之间的角度差为 2~5°， 当阀门关闭吋， 所有的节流孔 11被阀芯 3截断， 而环形凸缘 12与密封面 B13所形成的顶尖与密封 面 A10紧密接触， 形成密封可靠的线密封， 防止了介质泄露。
[0018] 所述的阀座 2的上表面堆焊有硬质合金层； 所述的阀芯 3的下表面堆焊有硬质合 金层。 所述的阀杆 5设置于阀套 4内且位于阀芯 3的上方， 阀杆 5与阀芯 3柔性连接 ， 以保证阀门在关闭吋， 阀芯 3能自由调心， 使阀芯 3的密封面 B13和阀座 2的密 封面 A10紧密结合， 从而确保阀门密封严密。
[0019] 本发明的工作过程如下： 调节阀进行调节介质流量吋， 当向上移动阀芯 3吋， 导通的节流孔 11数量增加， 大部分介质顺次经节流孔 11、 阀套 4内孔、 阀座 2、 介质出口 8流出； 当向下移动阀芯 3吋， 导通的节流孔 11数量减少， 仅少部分介 质顺次经节流孔 11、 阀套 4内孔、 阀座 2、 介质出口 8流出， 从而调节介质参数。 在这两种调节状态下， 由于阀芯 3外侧的环形凸缘 12起到防止节流介质对密封面 的冲蚀作用， 介质始终冲击不到阀芯 3密封面 B13， 因此阀芯 3的密封面 B13在阀 门进行调节介质吋不会被冲蚀或汽蚀等破坏， 不会阀座 2与阀芯 3之间不会形成 间隙， 当调节阀关闭吋就能实现严密关闭， 同吋， 由于密封面 B13得到有效的保 护而不会被损坏， 显著的延长调节阀的使用寿命， 同吋， 确保调节阀的调节精 度。
[0020] 以上所述仅是本发明的优选实施方式， 应当理解本发明并非局限于本文所披露 的形式， 不应看作是对其他实施例的排除， 而可用于各种其他组合、 修改和环 境， 并能够在本文所述构想范围内， 通过上述教导或相关领域的技术或知识进 行改动。 而本领域人员所进行的改动和变化不脱离本发明的精神和范围， 则都 应在本发明所附权利要求的保护范围内。

Claims

权利要求书
[权利要求 1] 一种阀门密封面防冲蚀结构， 其特征在于： 它包括阀体 （1) 、 阀座
(2) 、 阀芯 (3) 、 阀套 （4) 和阀杆 (5) ， 所述的阀体 ( 1) 内设 置有型腔 （6) ， 阀体 （1) 的左端部和下端部分别设置有介质入口 （ 7) 和介质出口 （8) ， 阀体 （1) 内且位于介质出口 （8) 和型腔 （6
) 之间设置有阀座安装孔， 阀座安装孔内设置有阀座 （2) ， 阀座 (2 ) 的顶表面设置有环形台 （9) ， 环形台 （9) 外侧面为与水平面呈夹 角设置的密封面 A ( 10) ， 所述的阀体 （1) 内还设置有由上往下贯 穿型腔 （6) 的阀套 （4) ， 阀套 （4) 的下端面固定于阀座 （2) 外边 缘上， 阀套 （4) 的柱面上且位于阀套 （4) 的下端部均匀分布有多个 节流孔 （11) ， 所述的阀芯 （3) 设置于阀套 （4) 内， 阀芯 （3) 的 外壁与阀套 （4) 的内壁接触， 阀芯 （3) 的底部且位于其外侧上设置 有环形凸缘 （12) ， 环形凸缘 （12) 的内侧面为与水平面呈夹角设置 的密封面 B ( 13) ， 密封面 B ( 13) 和密封面 A ( 10) 均呈环形状， 且 密封面 B ( 13) 与密封面 A ( 10) 之间的角度差为 2~5°， 所述的阀杆 (5) 设置于阀套 （4) 内且位于阀芯 （3) 的上方， 阀杆 （5) 与阀芯
(3) 连接。
[权利要求 2] 根据权利要求 1所述的一种阀门密封面防冲蚀结构， 其特征在于： 所 述的阀座 （2) 的上表面堆焊有硬质合金层。
[权利要求 3] 根据权利要求 1所述的一种阀门密封面防冲蚀结构， 其特征在于： 所 述的阀芯 （3) 的下表面堆焊有硬质合金层。
[权利要求 4] 根据权利要求 1所述的一种阀门密封面防冲蚀结构， 其特征在于： 所 述的阀杆 （5) 与阀芯 （3) 柔性连接。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110805713A (zh) * 2019-11-26 2020-02-18 上海发电设备成套设计研究院有限责任公司 一种调节阀分体式自保护密封面结构
CN113404869A (zh) * 2021-06-11 2021-09-17 无锡市亚迪流体控制技术有限公司 一种套筒式调节阀

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3530874B1 (en) * 2018-02-26 2020-10-14 CCI Italy S.r.l. Erosion monitoring system
CN109654242A (zh) * 2019-02-19 2019-04-19 成都乘风阀门有限责任公司 高压角式节流阀
CN113404926B (zh) * 2021-05-19 2024-04-05 陕煤电力信阳有限公司 一种高旁减压阀防内漏改进方法
CN113309490A (zh) * 2021-07-06 2021-08-27 成都百胜野牛科技有限公司 天然气井智能流量调节器的防冲蚀结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618026A (en) * 1995-02-13 1997-04-08 General Signal Corporation Hybrid rotary control valve assembly
CN202074047U (zh) * 2011-05-17 2011-12-14 方圆阀门集团有限公司 一种节流截止放空阀
CN103244748A (zh) * 2013-05-09 2013-08-14 哈尔滨松林电站设备有限公司 抗气蚀疏水调节阀
CN204226669U (zh) * 2014-11-18 2015-03-25 自贡自高阀门有限公司 改进型节流截止放空阀
CN204739235U (zh) * 2015-05-29 2015-11-04 马鞍山当涂发电有限公司 一种保护阀芯密封面的低压旁路阀门
CN206036257U (zh) * 2016-09-29 2017-03-22 李岑文达 一种阀门密封面防冲蚀结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815698A (en) * 1988-05-02 1989-03-28 Strahman Valves, Inc. Hard seated valve
DE9109272U1 (zh) * 1991-07-26 1991-09-26 Paul Pleiger Maschinenfabrik Gmbh & Co Kg, 5810 Witten, De
SE9401306L (sv) * 1994-04-15 1995-05-15 Btg Kaelle Inventing Ab Anordning vid en reglerventil
FR2727734B1 (fr) * 1994-12-06 1997-01-17 Control Valves Sarl Vannes de reglage a double debit
US6805162B2 (en) * 2002-08-15 2004-10-19 Control Components, Inc. Erosion reducing valve plug and seat ring
CN101504078B (zh) * 2009-03-07 2011-05-25 无锡智能自控工程有限公司 拧入锻式高压笼式平衡型调节切断角阀
CN101806363B (zh) * 2010-04-30 2011-08-10 南京理工大学 一种高温高压双向平衡截止阀
CN202834105U (zh) * 2012-09-26 2013-03-27 成都欣国立低温科技有限公司 流体介质切断阀
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
CN204784776U (zh) * 2015-07-22 2015-11-18 浙江金锋自动化仪表有限公司 高温高压先导式切断阀
CN205534294U (zh) * 2016-03-29 2016-08-31 无锡卓尔阀业有限公司 单座套筒防颗粒高压放空角阀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618026A (en) * 1995-02-13 1997-04-08 General Signal Corporation Hybrid rotary control valve assembly
CN202074047U (zh) * 2011-05-17 2011-12-14 方圆阀门集团有限公司 一种节流截止放空阀
CN103244748A (zh) * 2013-05-09 2013-08-14 哈尔滨松林电站设备有限公司 抗气蚀疏水调节阀
CN204226669U (zh) * 2014-11-18 2015-03-25 自贡自高阀门有限公司 改进型节流截止放空阀
CN204739235U (zh) * 2015-05-29 2015-11-04 马鞍山当涂发电有限公司 一种保护阀芯密封面的低压旁路阀门
CN206036257U (zh) * 2016-09-29 2017-03-22 李岑文达 一种阀门密封面防冲蚀结构

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110805713A (zh) * 2019-11-26 2020-02-18 上海发电设备成套设计研究院有限责任公司 一种调节阀分体式自保护密封面结构
CN113404869A (zh) * 2021-06-11 2021-09-17 无锡市亚迪流体控制技术有限公司 一种套筒式调节阀
CN113404869B (zh) * 2021-06-11 2023-09-22 无锡市亚迪流体控制技术有限公司 一种套筒式调节阀

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