WO2018053666A1 - 核岛用阀体分开焊接角式止回门 - Google Patents

核岛用阀体分开焊接角式止回门 Download PDF

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Publication number
WO2018053666A1
WO2018053666A1 PCT/CN2016/000536 CN2016000536W WO2018053666A1 WO 2018053666 A1 WO2018053666 A1 WO 2018053666A1 CN 2016000536 W CN2016000536 W CN 2016000536W WO 2018053666 A1 WO2018053666 A1 WO 2018053666A1
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Prior art keywords
valve body
valve
guide post
nuclear island
spring
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PCT/CN2016/000536
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English (en)
French (fr)
Inventor
陈金京
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陈金京
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Application filed by 陈金京 filed Critical 陈金京
Priority to PCT/CN2016/000536 priority Critical patent/WO2018053666A1/zh
Publication of WO2018053666A1 publication Critical patent/WO2018053666A1/zh

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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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members

Definitions

  • the utility model relates to the field of a check valve, in particular to a valve body for welding a corner of a nuclear island.
  • Valves are a type of pipeline control equipment commonly used in industry.
  • the check gate controls the backflow of the medium and the unidirectional flow direction to realize the system protection control requirements.
  • the existing check valve body and the valve cover are flanged or screwed, and the valve cavity is a tank-shaped volume as a whole, so that the weight of the valve body is increased, the volume is increased, and the cost is high; the positioning of the valve flap in the valve cavity is guided by the valve.
  • the support structure of the rod and the valve body is completed, and the structure is complicated and the components are many. Since the valve flap is heavy, the resistance of the medium circulation is large, the guide sleeve is easy to wear, and the valve flap is returned to the valve seat to cause a point deviation, which is easy to crush the sealing surface.
  • the check gate can only be used in systems with infrequent use and stable differential pressure.
  • the project is to overcome the deficiencies of the prior art, and provides a valve body separately welded angle type check gate, which is small in volume and low in cost through the welding of the upper and lower valve bodies, and is suitable for frequent work, and the pressure at both ends of the inlet and the outlet is stable.
  • the nuclear island system allows media to enter in both directions, reducing the number of valve installations.
  • the nuclear island uses a valve body to separate the welded angle check gate, which comprises an upper valve body, a lower valve body, a valve flap and a spring.
  • the upper end of the upper valve body is an outlet flow passage, and the lower end of the upper valve body is a valve flap cavity, and the valve flap
  • the valve disc includes a valve disc and a guide post. The upper end of the guide post is located in the circular hole, and the lower end of the guide post is connected with the valve.
  • the lower end of the upper valve body is welded to the upper end of the lower valve body, and the lower valve body is provided with a valve seat, and the lower part of the valve disc is located on the valve seat.
  • the lower end of the circular hole of the homogenizer has an annular step, and the outer side of the guide post is provided with a spring, the upper end of the spring is placed on the annular step, and the lower end of the spring is placed on the upper side of the valve disc.
  • the lower valve body is an angular valve body, and the lower valve body is designed with two inlet flow passages, and the two inlet flow passages are at right angles.
  • Both the upper valve body and the lower valve body are made of WB36 steel.
  • the sealing surface contacting the valve seat at the lower end of the valve disc is welded with a layer of cemented carbide.
  • the utility model has the advantages that the medium can enter from two directions and reduce the number of valve installations;
  • the original valve body design is a flange connection, which is large in volume and heavy in weight.
  • the valve body design is butt welding connection, the volume is smaller, the weight is lighter;
  • the original valve body material is 25 steel, which is suitable for ordinary units of electric power system.
  • the valve body material WB36 is suitable for high-voltage units of nuclear power systems; the original design has guide sleeves, valve stems and other components.
  • the valve disc and the valve stem are designed as a whole, and are guided by a spring, which is low in manufacturing cost.
  • Figure 1 is a schematic view of the present invention.
  • FIG. 2 is a top plan view of the homogenizer of the present invention.
  • FIG 3 is a schematic view of a valve flap of the present invention.
  • Figure 4 is a partial enlarged view of the utility model.
  • valve body of the nuclear island is separated by a welded angle check gate, which comprises an upper valve body 1, a lower valve body 2, a valve flap 3, a spring 4, and an upper end of the upper valve body 1 is an outlet flow passage.
  • the middle of the lower end of the upper valve body 1 is a valve disc cavity, and the valve disc cavity is designed with a homogenizer 5, a circular hole 51 in the middle of the homogenizer 5, and a plurality of uniform holes 52 are designed around the circular hole 51, and the valve disc 3 includes a The valve disc 31 and the guide post 32, the upper end of the guide post 32 is located in the circular hole 51, the lower end of the guide post 32 is connected to the valve disc 31, and the lower end of the upper valve body 1 is welded to the upper end of the lower valve body 2,
  • the valve body 2 is provided with a valve seat 6 on the upper side thereof, and the valve disc 31 is located on the valve seat 6 below.
  • the lower end of the circular hole 51 of the homogenizer 5 is provided with an annular step 53.
  • the outer side of the guide post 32 is provided with a spring 4, and the upper end of the spring 4 is placed on the annular step 53 and the lower end of the spring 4 is placed on the upper surface of the valve disc 31.
  • the lower valve body 2 is an angular valve body, and the lower valve body 2 is designed with two inlet flow passages, and the two inlet flow passages are at right angles.
  • Both the upper valve body 1 and the lower valve body 2 are made of WB36 steel.
  • a cemented carbide 33 is deposited on the sealing surface of the lower end of the valve disc 31 in contact with the valve seat 6.
  • the medium enters from the two inlet flow passages of the lower valve body, and the valve flap is opened under the action of the medium pressure, and the valve is opened.
  • the valve flap is reset under the action of the spring, the valve The valve is sealed on the valve seat to prevent backflow of the medium.
  • the design of the homogenizer not only ensures that the valve flap is stable up and down, but also can guide the flow.

Landscapes

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

Abstract

一种核岛用阀体分开焊接角式止回门，包括上阀体（1）、下阀体（2）、阀瓣（3）、弹簧（4），上阀体（1）上端中间是出口流道，上阀体（1）下端中间是阀瓣腔，阀瓣腔内设计有一个均布器（5），均布器（5）中间一个圆孔（51），圆孔（51）四周设计有若干均布孔（52），阀瓣（3）包括一个阀盘（31）和导向柱（32），导向柱（32）上端位于圆孔（51）内，导向柱（32）下端连接阀盘（31）上，上阀体（1）下端焊接在下阀体（2）上端，下阀体（2）上面装有阀座（6），阀盘（31）下面位于阀座（6）上。采用该装置，介质可以从两个方向进入，减少阀门安装数量；该装置是对焊连接，体积变小、重量变轻；该装置适用于核电系统的高压机组；该装置阀瓣与阀杆为整体，用弹簧导向，制造成本低。

Description

核岛用阀体分开焊接角式止回门 技术领域
本实用新型涉及止回阀领域，具体涉及一种核岛用阀体分开焊接角式止回门。
背景技术
阀门是工业上常用的一种管道控制设备。止回门控制介质的倒流，单向流向，实现系统保护控制要求。现有的止回门阀体与阀盖为法兰或螺纹连接，阀腔整体为罐状容积，使得阀体重量增大、体积变大、成本高；阀瓣在阀腔的定位导向是由阀杆和阀体内的支撑结构来完成，结构复杂、部件多。由于阀瓣重，介质流通的阻力大，导向套容易磨损，阀瓣回位阀座时产生点偏差，容易压伤密封面。止回门只能适用在使用不频繁，压差稳定的系统使用。
发明内容
本项目的是克服现有技术的不足，提供一种阀体分开焊接角式止回门，通过上、下阀体的焊接，体积小，成本低，适用于工作频繁，进出口两端压力稳定的核岛系统，介质可以从两个方向进入，减少阀门安装数量。
为了达到上述发明目的，本实用新型提出以下技术方案：
核岛用阀体分开焊接角式止回门，它包括上阀体、下阀体、阀瓣、弹簧，上阀体上端中间是出口流道，上阀体下端中间是阀瓣腔，阀瓣腔内设计有一个均布器，均布器中间一个圆孔，圆孔四周设计有若干均布孔，阀瓣包括一个阀盘和导向柱，导向柱上端位于圆孔内，导向柱下端连接阀盘上，上阀体下端焊接在下阀体上端，下阀体上面装有阀座，阀盘下面位于阀座上。
所述的均布器的圆孔下端开有环形台阶，导向柱外侧套装有弹簧，弹簧上端顶在环形台阶上，弹簧下端顶在阀盘上面。
所述的下阀体是角状阀体，下阀体设计有两个进口流道，两个进口流道呈直角状。
所述的上阀体和下阀体都采用WB36钢。
所述的阀盘下端与阀座接触的密封面上堆焊一层硬质合金。
本实用新型的优点是介质可以从两个方向进入，减少阀门安装数量；原阀体设计是法兰连接，体积大、重量较重。现阀体设计是对焊连接，体积变小、重量变轻；原阀体材料25钢，适用于电力系统的普通机组等。现阀体材料WB36，适用于核电系统的高压机组；原设计有导向套、阀杆等部件。现设计阀瓣与阀杆为整体，用弹簧导向，制造成本低。
附图说明
图1是本实用新型的示意图。
图2是本实用新型的均布器俯视图。
图3是本实用新型的阀瓣的示意图。
图4是本实用新型的局部放大图。
具体实施方式
参照附图1-4，核岛用阀体分开焊接角式止回门，它包括上阀体1、下阀体2、阀瓣3、弹簧4，上阀体1上端中间是出口流道，上阀体1下端中间是阀瓣腔，阀瓣腔内设计有一个均布器5，均布器5中间一个圆孔51，圆孔51四周设计有若干均布孔52，阀瓣3包括一个阀盘31和导向柱32，导向柱32上端位于圆孔51内，导向柱32下端连接阀盘31上，上阀体1下端焊接在下阀体2上端，下 阀体2上面装有阀座6，阀盘31下面位于阀座6上。
所述的均布器5的圆孔51下端开有环形台阶53，导向柱32外侧套装有弹簧4，弹簧4上端顶在环形台阶53上，弹簧4下端顶在阀盘31上面。
所述的下阀体2是角状阀体，下阀体2设计有两个进口流道，两个进口流道呈直角状。
所述的上阀体1和下阀体2都采用WB36钢。
所述的阀盘31下端与阀座6接触的密封面上堆焊一层硬质合金33。
本实用新型使用时，介质从下阀体两个进口流道进入，在介质压力的作用下把阀瓣顶开，阀门就打开了，当介质不流动时，阀瓣在弹簧作用下复位，阀瓣密封于阀座上，防止介质回流，均布器设计不但保证了阀瓣上下平稳，而且能够导流。

Claims (5)

  1. 核岛用阀体分开焊接角式止回门，它包括上阀体、下阀体、阀瓣、弹簧，其特征是上阀体上端中间是出口流道，上阀体下端中间是阀瓣腔，阀瓣腔内设计有一个均布器，均布器中间一个圆孔，圆孔四周设计有若干均布孔，阀瓣包括一个阀盘和导向柱，导向柱上端位于圆孔内，导向柱下端连接阀盘上，上阀体下端焊接在下阀体上端，下阀体上面装有阀座，阀盘下面位于阀座上。
  2. 根据权利要求1所述的核岛用阀体分开焊接角式止回门，其特征是所述的均布器的圆孔下端开有环形台阶，导向柱外侧套装有弹簧，弹簧上端顶在环形台阶上，弹簧下端顶在阀盘上面。
  3. 根据权利要求1所述的核岛用阀体分开焊接角式止回门，其特征是所述的下阀体是角状阀体，下阀体设计有两个进口流道，两个进口流道呈直角状。
  4. 根据权利要求1所述的核岛用阀体分开焊接角式止回门，其特征是所述的上阀体和下阀体都采用WB36钢。
  5. 根据权利要求1所述的核岛用阀体分开焊接角式止回门，其特征是所述的阀盘下端与阀座接触的密封面上堆焊一层硬质合金。
PCT/CN2016/000536 2016-09-22 2016-09-22 核岛用阀体分开焊接角式止回门 WO2018053666A1 (zh)

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CN109404067A (zh) * 2018-12-17 2019-03-01 杭州杭氧膨胀机有限公司 一种透平膨胀机蜗壳

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CN204239821U (zh) * 2014-10-28 2015-04-01 蒋瑾 一种板式连接的直角单向阀
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US20160245414A1 (en) * 2015-02-25 2016-08-25 Purity (Xiamen) Sanitary Ware Co., Ltd. Anti-siphon one-way valve
CN205654918U (zh) * 2016-05-19 2016-10-19 南通国电电站阀门股份有限公司 核岛用阀体分开焊接角式止回门

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Publication number Priority date Publication date Assignee Title
CN102878329A (zh) * 2012-10-13 2013-01-16 南通国电电站阀门有限公司 超临界对接焊柱体立式逆止阀
US20150059885A1 (en) * 2013-09-05 2015-03-05 Caterpillar Global Mining Europe Gmbh Valve assembly
CN204140999U (zh) * 2014-09-17 2015-02-04 浙江良一阀门制造有限公司 一种关断阀
CN204239821U (zh) * 2014-10-28 2015-04-01 蒋瑾 一种板式连接的直角单向阀
US20160245414A1 (en) * 2015-02-25 2016-08-25 Purity (Xiamen) Sanitary Ware Co., Ltd. Anti-siphon one-way valve
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109404067A (zh) * 2018-12-17 2019-03-01 杭州杭氧膨胀机有限公司 一种透平膨胀机蜗壳
CN109404067B (zh) * 2018-12-17 2024-03-12 杭州杭氧膨胀机有限公司 一种透平膨胀机蜗壳

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