CN102927072A - 一种带阀芯位置检测的电液伺服阀 - Google Patents

一种带阀芯位置检测的电液伺服阀 Download PDF

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CN102927072A
CN102927072A CN2012104773118A CN201210477311A CN102927072A CN 102927072 A CN102927072 A CN 102927072A CN 2012104773118 A CN2012104773118 A CN 2012104773118A CN 201210477311 A CN201210477311 A CN 201210477311A CN 102927072 A CN102927072 A CN 102927072A
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spool
valve
amplifying device
valve core
valve body
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CN102927072B (zh
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李涛
杜桂林
李腾飞
张荣禄
殷盛江
孙中国
高树伟
孙文庆
孟娅
厉彦亮
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Shandong Kerui Oil And Gas Engineering Group Co ltd
SHANDONG KERUI PETROLEUM EQUIPMENT CO LTD
Shandong Shengli Petroleum Equipment Industry Technology Research Institute
Weifei Marine Equipment Manufacturing Co ltd
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李涛
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Abstract

一种带阀芯位置检测的电液伺服阀，由永久磁铁、导磁体、衔铁、弹簧管、喷嘴、磁环、固定磁芯、电气放大装置、信号线、阀芯、下阀体、滤油器、反馈弹簧杆、线圈、上阀体、阀芯位移显示器组成，线圈安装在衔铁上，衔铁安装在导磁体上，导磁体放置在上阀体的内部，弹簧管和反馈弹簧杆安装在衔铁上，衔铁被永久磁铁包围，弹簧管处于喷嘴中间，反馈弹簧杆的顶端处于阀芯的中部，磁环安装在阀芯中部的右侧，固定磁芯固定在电气放大装置上，电气放大装置固定在下阀体上，滤油器安装在电液伺服阀的阀芯下部，信号线将电气放大装置和阀芯位移显示器连接在一起。该发明的有益之处是实现阀芯位移监测。

Description

一种带阀芯位置检测的电液伺服阀
技术领域
本发明涉及一种带阀芯位置检测的电液伺服阀，具体地说是应用电磁感应原理，将电液伺服阀阀芯的位移量转化为电信号，经过放大电路的转化变为数字信号显示到显示器上，方便检测电液伺服阀阀芯的移动情况，属于自动化装置领域。
背景技术
电液伺服阀在现代液压装置中的应用越来越广泛，在系统调试和正常运行时都迫切需要了解电液伺服阀的运行状况。但是电液伺服阀一旦出现故障，就需要返回原厂进行试验测试检查故障，十分的不方便。电液伺服阀的故障一般表现在阀芯的移动状况上，通过检测电液伺服阀阀芯在特种情况下的位移量就可以判断伺服阀的运行状态。但是目前市场上的电液伺服阀缺乏阀芯位移量的检测。
发明内容
针对上述不足，本发明提供了一种带阀芯位置检测的电液伺服阀。
本发明是通过以下技术方案实现的：一种带阀芯位置检测的电液伺服阀，由永久磁铁、导磁体、衔铁、弹簧管、喷嘴、磁环、固定磁芯、电气放大装置、信号线、阀芯、下阀体、滤油器、反馈弹簧杆、线圈、上阀体、阀芯位移显示器组成，线圈安装在衔铁上，衔铁安装在导磁体上，导磁体放置在上阀体的内部，弹簧管和反馈弹簧杆安装在衔铁上，衔铁被永久磁铁包围，弹簧管处于喷嘴中间，反馈弹簧杆的顶端处于阀芯的中部，磁环安装在阀芯中部的右侧，固定磁芯固定在电气放大装置上，电气放大装置固定在下阀体上，滤油器安装在电液伺服阀的阀芯下部，信号线将电气放大装置和阀芯位移显示器连接在一起。
该发明的有益效果是：能够实现阀芯位移监测，便于人们了解伺服阀的运行状态。
附图说明
图1为该发明的阀体部分结构图，图2为阀芯位移显示器部分图。
图中：1永久磁铁、2导磁体、3衔铁、4弹簧管、5喷嘴、6磁环、7固定磁芯、8电气放大装置、9信号线、10阀芯、11下阀体、12滤油器、13反馈弹簧杆、14线圈、15上阀体、16阀芯位移显示器
具体实施方式
一种带阀芯位置检测的电液伺服阀，由永久磁铁1、导磁体2、衔铁3、弹簧管4、喷嘴5、磁环6、固定磁芯7、电气放大装置8、信号线9、阀芯10、下阀体11、滤油器12、反馈弹簧杆13、线圈14、上阀体15、阀芯位移显示器16组成，线圈14安装在衔铁3上，衔铁3安装在导磁体2上，导磁体2放置在上阀体15的内部，弹簧管4和反馈弹簧杆13安装在衔铁3上，衔铁3被永久磁铁1包围，弹簧管4处于两个喷嘴5中间，反馈弹簧杆13的顶端处于阀芯10的中部，磁环6安装在阀芯10中部偏右，固定磁芯7固定在右半部分阀芯10上，固定磁芯7的一端固定在电气放大装置8上，电气放大装置8固定在下阀体11上，滤油器12安装在电液伺服阀的阀芯10下部，信号线将电气放大装置8和阀芯位移显示器16连接在一起。
外部电信号通过线圈14驱动弹簧管4产生一定的角位移，进而改变通过两个喷嘴5的液压油的流量，阀芯10左侧油腔和右侧油腔的压力发生变化，阀芯10产生一定的位移，反馈弹簧杆13在阀芯10的作用下向相反的方向产生一定的角位移，并将角位移反馈到弹簧管4，经过一段时间，最终系统达到平衡，此时，阀芯10有一定的位移量，磁环6也产生相应的位移，在电磁感应作用下，固定磁芯7将电磁感应产生的电流传递到电气放大装置8，此电信号在电气放大装置8的作用下产生相应的数字信号，通过信号线9将电气放大装置8产生的数字信号传送到阀芯位移显示器。

Claims (1)

1.一种带阀芯位置检测的电液伺服阀，其特征为：由永久磁铁、导磁体、衔铁、弹簧管、喷嘴、磁环、固定磁芯、电气放大装置、信号线、阀芯、下阀体、滤油器、反馈弹簧杆、线圈、上阀体、阀芯位移显示器组成，线圈安装在衔铁上，衔铁安装在导磁体上，导磁体放置在上阀体的内部，弹簧管和反馈弹簧杆安装在衔铁上，衔铁被永久磁铁包围，弹簧管处于喷嘴中间，反馈弹簧杆的顶端处于阀芯的中部，磁环安装在阀芯中部的右侧，固定磁芯固定在电气放大装置上，电气放大装置固定在下阀体上，滤油器安装在电液伺服阀的阀芯下部，信号线将电气放大装置和阀芯位移显示器连接在一起。
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Publication number Priority date Publication date Assignee Title
CN104567686A (zh) * 2013-10-18 2015-04-29 北京精密机电控制设备研究所 偏转板位移测量装置
CN104897380A (zh) * 2015-04-09 2015-09-09 中国第一汽车股份有限公司无锡油泵油嘴研究所 共轨管限压阀偶件保压行程的检测装置和测量方法
CN109556854A (zh) * 2018-11-28 2019-04-02 中国航空工业集团公司西安飞行自动控制研究所 旋转直接驱动伺服阀的副阀芯检测结构
CN112604863A (zh) * 2020-12-28 2021-04-06 广州媛爱贸易有限公司 一种电液伺服阀喷嘴自动压入设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104567686A (zh) * 2013-10-18 2015-04-29 北京精密机电控制设备研究所 偏转板位移测量装置
CN104897380A (zh) * 2015-04-09 2015-09-09 中国第一汽车股份有限公司无锡油泵油嘴研究所 共轨管限压阀偶件保压行程的检测装置和测量方法
CN104897380B (zh) * 2015-04-09 2017-12-12 中国第一汽车股份有限公司无锡油泵油嘴研究所 共轨管限压阀偶件保压行程的检测装置和测量方法
CN109556854A (zh) * 2018-11-28 2019-04-02 中国航空工业集团公司西安飞行自动控制研究所 旋转直接驱动伺服阀的副阀芯检测结构
CN109556854B (zh) * 2018-11-28 2021-09-14 中国航空工业集团公司西安飞行自动控制研究所 旋转直接驱动伺服阀的副阀芯检测结构
CN112604863A (zh) * 2020-12-28 2021-04-06 广州媛爱贸易有限公司 一种电液伺服阀喷嘴自动压入设备

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