CN103994236A - 截止阀耐高温、耐腐蚀密封结构 - Google Patents

截止阀耐高温、耐腐蚀密封结构 Download PDF

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Publication number
CN103994236A
CN103994236A CN201310050920.XA CN201310050920A CN103994236A CN 103994236 A CN103994236 A CN 103994236A CN 201310050920 A CN201310050920 A CN 201310050920A CN 103994236 A CN103994236 A CN 103994236A
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CN
China
Prior art keywords
valve
corrosion
resistant
stop valve
spherical seal
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
CN201310050920.XA
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English (en)
Inventor
田江
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.)
Jiang Suhai Reaches Ship Valve Industry Co Ltd
Original Assignee
Jiang Suhai Reaches Ship Valve Industry Co Ltd
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Filing date
Publication date
Application filed by Jiang Suhai Reaches Ship Valve Industry Co Ltd filed Critical Jiang Suhai Reaches Ship Valve Industry Co Ltd
Priority to CN201310050920.XA priority Critical patent/CN103994236A/zh
Publication of CN103994236A publication Critical patent/CN103994236A/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
    • 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
    • F16K1/14—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 ball-shaped 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
    • 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
    • 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 seat
    • F16K25/04—Arrangements for preventing erosion, not otherwise provided for

Abstract

本发明公开了一种截止阀耐高温、耐腐蚀密封结构，它设置在截止阀阀瓣、阀座之间；阀瓣接在阀杆的下端，阀座嵌装在阀体内；阀瓣凸形球形密封面与阀座凹形球形密封面紧密配合，形成球形密封面密封；阀瓣凸形球形密封面上设有耐腐蚀复合层；阀座凹形球形密封面上设有合金金属层。本发明密封结构合理，不仅耐腐蚀，而且耐高温，特别适合应用在输送高温腐蚀性介质的截止阀上。

Description

截止阀耐高温、耐腐蚀密封结构
技术领域
本发明涉及一种用于截止阀密封结构。
背景技术
现有截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，密封面与阀体材料相同。这种截止阀密封性好，密封面间磨擦力小，因此，被广泛地应用地各种工业管网中。但现有截止阀的密封结构在应用于高温腐蚀性介质的管道中时，高温腐蚀性介质会腐蚀密封面，使得截止阀密封性变差，产生泄漏，影响截止阀的正常使用。
发明内容
本发明针对现有技术的不足，提出一种耐高温、耐腐蚀的截止阀耐高温、耐腐蚀密封结构。
本发明通过下述技术方案实现技术目标。
截止阀耐高温、耐腐蚀密封结构，它设置在截止阀阀瓣、阀座之间；所述阀瓣接在阀杆的下端，阀座嵌装在阀体内；其改进之处在于：所述阀瓣凸形球形密封面与阀座凹形球形密封面紧密配合，形成球形密封面密封；所述阀瓣凸形球形密封面上设有耐腐蚀复合层；所述阀座凹形球形密封面上设有合金金属层。
作为本发明进一步的改进，所述耐腐蚀复合层为聚四氟乙烯复合层。
作为本发明更进一步的改进，所述合金金属层为硬质合金金属层。
本发明与现有技术相比，具有以下积极效果：
1、采用球形密封面密封，密封面积大，密封效果好。
2、阀瓣凸形球形密封面上设有耐腐蚀复合层，阀座凹形球形密封面上设有合金金属层，使得密封结构不仅耐腐蚀，而且耐高温，介质温度可达到600℃。
3、阀座凹形球形密封面上设有硬质合金金属层，显著提高阀座密封面的耐磨性。
附图说明
图1为本发明具体结构示意图。
图2为图1中Ⅰ部分局部放大图。
具体实施方式
下面根据附图并结合实施例对本发明作进一步说明。
    附图所示截止阀耐高温、耐腐蚀密封结构，它设置在截止阀阀瓣3、阀座2之间；阀瓣3连接在阀杆4的下端，阀座2嵌装在阀体1内；阀瓣3凸形球形密封面与阀座2凹形球形密封面紧密配合，形成球形密封面密封；阀瓣3凸形球形密封面上设有耐腐蚀复合层6，本实施例中，耐腐蚀复合层6为聚四氟乙烯复合层；阀座2凹形球形密封面上设有合金金属层5，本实施例中，合金金属层5为硬质合金金属层，焊接在阀座2上。

Claims (3)

1.一种截止阀耐高温、耐腐蚀密封结构，它设置在截止阀阀瓣（3）、阀座（2）之间；所述阀瓣（3）连接在阀杆（4）的下端，阀座（2）嵌装在阀体（1）内；其特征在于：所述阀瓣（3）凸形球形密封面与阀座（2）凹形球形密封面紧密配合，形成球形密封面密封；所述阀瓣（3）凸形球形密封面上设有耐腐蚀复合层（6）；所述阀座（2）凹形球形密封面上设有合金金属层（5）。
2.根据权利要求1所述的截止阀耐高温、耐腐蚀密封结构，其特征在于：所述耐腐蚀复合层（6）为聚四氟乙烯复合层。
3.根据权利要求1或2所述的截止阀耐高温、耐腐蚀密封结构，其特征在于：所述合金金属层（5）为硬质合金金属层。
CN201310050920.XA 2013-02-16 2013-02-16 截止阀耐高温、耐腐蚀密封结构 Pending CN103994236A (zh)

Priority Applications (1)

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CN201310050920.XA CN103994236A (zh) 2013-02-16 2013-02-16 截止阀耐高温、耐腐蚀密封结构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310050920.XA CN103994236A (zh) 2013-02-16 2013-02-16 截止阀耐高温、耐腐蚀密封结构

Publications (1)

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CN103994236A true CN103994236A (zh) 2014-08-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840848A (zh) * 2016-04-29 2016-08-10 江苏海达船用阀业有限公司 耐腐蚀快关阀
CN106641372A (zh) * 2015-10-29 2017-05-10 江苏中昊船用阀门制造有限公司 耐高压抗腐蚀快关阀
CN106641292A (zh) * 2015-10-28 2017-05-10 江苏海达船用阀业有限公司 耐高温快关阀

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106641292A (zh) * 2015-10-28 2017-05-10 江苏海达船用阀业有限公司 耐高温快关阀
CN106641372A (zh) * 2015-10-29 2017-05-10 江苏中昊船用阀门制造有限公司 耐高压抗腐蚀快关阀
CN105840848A (zh) * 2016-04-29 2016-08-10 江苏海达船用阀业有限公司 耐腐蚀快关阀

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Application publication date: 20140820