CN103821949A - 级联阀瓣式调节阀 - Google Patents

级联阀瓣式调节阀 Download PDF

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Publication number
CN103821949A
CN103821949A CN201410063487.8A CN201410063487A CN103821949A CN 103821949 A CN103821949 A CN 103821949A CN 201410063487 A CN201410063487 A CN 201410063487A CN 103821949 A CN103821949 A CN 103821949A
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CN
China
Prior art keywords
valve
flap
clack
valve clack
auxiliary
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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
CN201410063487.8A
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English (en)
Inventor
邹世浩
万胜军
郑红丽
娄冬梅
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HARBIN POWER PLANT VALVE CO Ltd
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HARBIN POWER PLANT VALVE CO Ltd
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Priority to CN201410063487.8A priority Critical patent/CN103821949A/zh
Publication of CN103821949A publication Critical patent/CN103821949A/zh
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F16K3/26—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 with fluid passages in 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
    • 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

Landscapes

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

Abstract

本发明是一种级联阀瓣式调节阀，属于火电、核电阀门领域。级联阀瓣式调节阀安装在火电、核电机组水汽系统管道，是调节介质流量、压力、温度的重要设备。级联阀瓣式调节阀由阀瓣、弹簧、辅助阀瓣、阀杆、阀瓣压盖等组成，辅助阀瓣与阀杆为一体式结构。阀门开启时，辅助阀瓣先开启，阀瓣上下腔联通，阀瓣变为平衡结构，阀杆通过阀瓣压盖、弹簧带动阀瓣上下移动；阀门关闭时，阀杆压缩弹簧，辅助阀瓣压紧阀瓣内密封面，阀瓣下部密封面压紧阀座密封面，并实现两道密封面密封，阀瓣变为非平衡结构。本发明有效减小了阀门开启力，提高了阀门关闭时的密封性。

Description

级联阀瓣式调节阀
技术领域
本发明涉及一种级联阀瓣式调节阀，属于火电、核电阀门领域。
背景技术
级联阀瓣式调节阀安装在火电、核电机组水汽系统管道，是调节介质流量、压力、温度的重要设备。
目前，大口径或高压差调节阀为减小执行机构操作力均采用平衡式阀瓣结构，该结构会增加阀门关闭时的泄漏量，并且套筒上的密封圈会磨损，降低阀门使用寿命。有的调节阀为提高密封等级，采用非平衡式阀瓣，这会增加阀门操作力，增加成本。
发明内容
针对上述技术问题，本发明的目的是提供一种级联阀瓣式调节阀，关闭时密封严密，开启时大大降低阀门操作力。
为实现上述目的，本发明提供了一种级联阀瓣式调节阀，它包括阀体(1)、阀座(2)、节流套(3)、阀瓣(4)、弹簧(5)、辅助阀瓣(6)、阀杆(7)、阀瓣压盖(8)等。
所述级联阀瓣式调节阀的阀瓣中心钻有内流道孔，阀瓣内孔上部加工有密封面，密封面堆焊钴基硬质合金。
所述级联阀瓣式调节阀的阀杆与辅助阀瓣为一体式结构，阀杆头部堆焊钴基硬质合金，加工有密封面。
所述级联阀瓣式调节阀关闭时，阀杆压缩弹簧，辅助阀瓣压紧阀瓣内密封面，阀瓣下部密封面压紧阀座密封面，并实现两道密封面密封，阀瓣变为非平衡阀瓣。
所述级联阀瓣式调节阀开启时，阀杆即辅助阀瓣先开启，阀瓣上下腔联通，阀瓣变为平衡阀瓣，阀杆通过阀瓣压盖、弹簧带动阀瓣上下移动。
本发明的有益效果是：阀门开启时，辅助阀瓣先开启，阀瓣变为平衡式结构，减小了阀门操作力；阀门关闭时，辅助阀瓣压紧阀瓣内密封面，阀瓣变为非平衡式结构，提高了阀门密封等级。
附图说明
图是级联阀瓣式调节阀的结构示意图；
图中，1.阀体，2.阀座，3.节流套，4.阀瓣，5.弹簧，6.辅助阀瓣，7.阀杆，8.阀瓣压盖
具体实施方式
在图所示实施例中，阀瓣4中心钻有内流道孔，上部加工有密封面，阀杆7与辅助阀瓣6为一体式结构，阀瓣4、弹簧5通过阀瓣压盖8与阀杆7连接。阀门关闭时，阀杆7压缩弹簧5，辅助阀瓣6压紧阀瓣4内密封面，阀瓣4下部密封面压紧阀座2密封面，实现两道密封面密封，阀瓣4变为非平衡结构；阀门开启时，即辅助阀瓣6先开启，阀瓣4上下腔联通，阀瓣4变为平衡结构，阀杆7通过阀瓣压盖8、弹簧5带动阀瓣4上下移动。

Claims (5)

1.级联阀瓣式调节阀，其特征在于：它包括阀体(1)、阀座(2)、节流套(3)、阀瓣(4)、弹簧(5)、辅助阀瓣(6)、阀杆(7)、阀瓣压盖(8)等，阀体(1)与阀座(2)活动连接，辅助阀瓣(6)与阀杆(7)为一体式结构，阀瓣(4)、弹簧(5)通过阀瓣压盖(8)与阀杆(7)连接。
2.根据权利要求1所述的级联阀瓣式调节阀，其特征在于：阀瓣(4)中心钻有内流道孔，阀瓣(4)内孔上部加工有密封面，密封面堆焊钴基硬质合金。
3.根据权利要求1所述的级联阀瓣式调节阀，其特征在于：阀杆(7)与辅助阀瓣(6)为一体式结构，阀杆(7)头部堆焊钴基硬质合金，加工有密封面。
4.根据权利要求1所述的级联阀瓣式调节阀，其特征在于：阀门关闭时，阀杆(7)压缩弹簧(5)，辅助阀瓣(6)压紧阀瓣(4)内密封面，阀瓣(4)下部密封面压紧阀座(2)密封面，并实现两道密封面密封，阀瓣(4)变为非平衡结构。
5.根据权利要求1所述的级联阀瓣式调节阀，其特征在于：阀门开启时，阀杆(7)及辅助阀瓣(6)先开启，阀瓣(4)上下腔联通，阀瓣(4)变为平衡结构，阀杆(7)通过阀瓣压盖(8)、弹簧(5)带动阀瓣(4)上下移动。
CN201410063487.8A 2014-02-19 2014-02-19 级联阀瓣式调节阀 Pending CN103821949A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104653797A (zh) * 2015-02-12 2015-05-27 宣达实业集团有限公司 高压自平衡自密封活塞式调节节流截止阀
CN105351583A (zh) * 2015-12-01 2016-02-24 杭州杭氧工装泵阀有限公司 一种先导平衡型笼式调节阀阀瓣结构
CN110030412A (zh) * 2019-03-08 2019-07-19 哈电集团哈尔滨电站阀门有限公司 一种大口径多级先导式安全阀
CN114198506A (zh) * 2021-12-03 2022-03-18 北京航天石化技术装备工程有限公司 一种变调节特性的先导式阀芯结构

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* Cited by examiner, † Cited by third party
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CN85204171U (zh) * 1985-09-19 1986-11-19 沈阳高中压阀门厂 自压式截止阀主、副阀瓣组合件
CN202510790U (zh) * 2012-03-31 2012-10-31 浙江三方控制阀股份有限公司 一种先导式笼式单座调节阀
CN202545915U (zh) * 2012-02-06 2012-11-21 江苏宇达电站辅机阀门制造有限公司 弹簧抑震零泄漏调节阀
CN202733095U (zh) * 2012-07-24 2013-02-13 镇江市铸造阀门厂有限公司 平衡式高压差调节阀
CN203272830U (zh) * 2013-06-03 2013-11-06 方圆阀门集团有限公司 双作用节流截止阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85204171U (zh) * 1985-09-19 1986-11-19 沈阳高中压阀门厂 自压式截止阀主、副阀瓣组合件
CN202545915U (zh) * 2012-02-06 2012-11-21 江苏宇达电站辅机阀门制造有限公司 弹簧抑震零泄漏调节阀
CN202510790U (zh) * 2012-03-31 2012-10-31 浙江三方控制阀股份有限公司 一种先导式笼式单座调节阀
CN202733095U (zh) * 2012-07-24 2013-02-13 镇江市铸造阀门厂有限公司 平衡式高压差调节阀
CN203272830U (zh) * 2013-06-03 2013-11-06 方圆阀门集团有限公司 双作用节流截止阀

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104653797A (zh) * 2015-02-12 2015-05-27 宣达实业集团有限公司 高压自平衡自密封活塞式调节节流截止阀
CN105351583A (zh) * 2015-12-01 2016-02-24 杭州杭氧工装泵阀有限公司 一种先导平衡型笼式调节阀阀瓣结构
CN110030412A (zh) * 2019-03-08 2019-07-19 哈电集团哈尔滨电站阀门有限公司 一种大口径多级先导式安全阀
CN110030412B (zh) * 2019-03-08 2024-06-04 哈电集团哈尔滨电站阀门有限公司 一种大口径多级先导式安全阀
CN114198506A (zh) * 2021-12-03 2022-03-18 北京航天石化技术装备工程有限公司 一种变调节特性的先导式阀芯结构

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Application publication date: 20140528