CN108035923B - 一种非相似余度电液伺服阀 - Google Patents

一种非相似余度电液伺服阀 Download PDF

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CN108035923B
CN108035923B CN201711113175.3A CN201711113175A CN108035923B CN 108035923 B CN108035923 B CN 108035923B CN 201711113175 A CN201711113175 A CN 201711113175A CN 108035923 B CN108035923 B CN 108035923B
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pilot stage
stage
valve
hydraulic servo
baffle
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CN108035923A (zh
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邹小舟
陈元章
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Avic Nanjing Servo Control System Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603Multiple-way valves
    • F16K31/061Sliding valves
    • F16K31/0613Sliding valves with cylindrical slides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/124Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Servomotors (AREA)

Abstract

本发明属于液压控制领域,涉及一种非相似余度电液伺服阀,采用喷嘴挡板先导级和射流偏导板先导级作为控制级,以驱动第二级滑阀级,从而实现了电液伺服阀的非相似余度控制。喷嘴挡板先导级集成了一对喷嘴、一对节流孔,一个挡板和力矩马达;射流偏导板先导级集成了一个射流片、一个偏导板和力矩马达。两种先导级作用于共同的第二级,喷挡式先导控制级两腔安装有单向阀,开启压力不高于0.08MPa。即利用了喷嘴挡板级输出的大驱动力、高动态特性,也兼顾了射流先导级抗污染能力强的优点。

Description

一种非相似余度电液伺服阀
技术领域
本发明属于液压领域,涉及一种非相似余度电液伺服阀。
背景技术
常见的电液伺服阀结构一般分为喷嘴挡板电液伺服阀、射流式电液伺服阀和直接驱动电液伺服阀,喷嘴挡板电液伺服阀具有输出压差大、动态响应高,但抗污染能力等特点;射流式电液伺服阀和直接驱动电液伺服阀虽然动态响应低,但抗污染能力强。一般的电液伺服阀为单一结构的电液伺服阀,要么射流式、要么喷挡式或者直驱式,难以兼顾多种各自的优点。
发明内容
本发明目的:提供了一种非相似余度电液伺服阀。
本发明的技术方案是:一种非相似余度电液伺服阀,包括阀体1、偏导射流先导级2和喷嘴挡板先导级3,偏导射流先导级2和喷嘴挡板先导级3分别通过安装螺钉固定在阀体上。阀体1内安装有滑阀4、油滤5和一对单向阀6;偏导射流先导级2集成一个射流片7、偏导板8、第一反馈杆9和第一力矩马达10;偏导板(8)与第一反馈杆(9)一体刚性连接,并穿过射流片(7),第一力矩马达(10)通过紧固件固定于偏导射流先导级(2);喷嘴挡板先导级3集成一对喷嘴11、一对节流孔12,一个挡板13、第二反馈杆14和第二力矩马达15。第一反馈杆9与偏导板8一体化设计,并与滑阀4铰接在一起;第二反馈杆14与挡板13连接,并与滑阀4铰接在一起。
所述的非相似余度电液伺服阀,采用射流偏导板先导级2和喷嘴挡板先导级3作为控制级,以驱动第二级滑阀级,从而实现了电液伺服阀的非相似余度控制;
所述的非相似余度电液伺服阀,射流偏导板先导级2和喷嘴挡板先导级3共用滑阀4。
所述的非相似余度电液伺服阀,阀体1内部集成了一对单向阀6;
所述的非相似余度电液伺服阀,单向阀6安装在阀体1中喷嘴挡板先导级3的控制油路上;
所述的非相似余度电液伺服阀,单向阀6开启压力不大于0.08MPa。
本发明的有益效果:本发明采用喷嘴挡板先导级和射流偏导板先导级作为控制级,以驱动第二级滑阀级,从而实现了电液伺服阀的非相似余度控制。即利用了喷嘴挡板级输出压差大、动态响应高的特性,也兼顾了射流先导级抗污染能力强的优点。
附图说明
图1是本发明非相似余度电液伺服阀的结构示意图;
图2是本发明非相似余度电液伺服阀图1的A-A剖切结构示意图;
图3是本发明非相似余度电液伺服阀图1的B-B剖切展开结构示意图。
其中,1-阀体、2-偏导射流先导级、3-喷嘴挡板先导级、4-滑阀、5-油滤、6-单向阀、7-射流片、8-偏导板、9-反馈杆、10-力矩马达、11-喷嘴、12-节流孔、13-挡板、14-反馈杆、15-力矩马达
具体实施方式
为更好的说明本发明,下面结合附图具体说明。
请参阅图1~图3,其是本发明结构示意图及结构实施方式。
一种非相似余度电液伺服阀,包括阀体1、偏导射流先导级2和喷嘴挡板先导级3,偏导射流先导级2和喷嘴挡板先导级3分别通过安装螺钉固定在阀体上。阀体1内安装有滑阀4、油滤5和一对单向阀6;偏导射流先导级2集成一个射流片7、偏导板8、反馈杆9和力矩马达10;和喷嘴挡板先导级3集成一对喷嘴11、一对节流孔12,一个挡板13、反馈杆14和力矩马达15。反馈杆9与偏导板8一体化设计,并与滑阀4铰链在一起;反馈杆14与挡板13连接,并与滑阀4铰链在一起。
所述的非相似余度电液伺服阀,采用射流偏导板先导级2和喷嘴挡板先导级3作为控制级,以驱动第二级滑阀级,从而实现了电液伺服阀的非相似余度控制;
所述的非相似余度电液伺服阀,射流偏导板先导级2和喷嘴挡板先导级3共用滑阀4。
所述的非相似余度电液伺服阀,阀体1内部集成了一对单向阀6;
所述的非相似余度电液伺服阀,单向阀6安装在阀体1中喷嘴挡板先导级3的控制油路上;
所述的非相似余度电液伺服阀,单向阀6开启压力不大于0.08MPa。
当偏导射流先导级2工作时,喷嘴挡板先导级3处于非工作状态。当系统压力建立、力矩马达10接收控制信号,产生一电磁力矩,驱动偏导板8移动,改变射流片7两侧接收腔流量,从而改变滑阀4两侧的压力,滑阀4移动,同时带动与滑阀4铰链的反馈杆9移动,当反馈杆9产生的反馈力矩与电磁力矩相等时,滑阀4停止移动,并且滑阀4与阀体1之间形成一定的液压开度,输出与控制信号成正比的流量。
当喷嘴挡板先导级3,处于偏导射流先导级2工作时非工作状态。当系统压力建立、力矩马达15接收控制信号,产生一电磁力矩,驱动挡板13偏转,改变两喷嘴11和两节流孔12之间的压力差,此压力差开启单向阀6作用在滑阀4两侧,从而驱动滑阀4移动,同时带动与滑阀4铰链的反馈杆14移动,当反馈杆14产生的反馈力矩与电磁力矩相等时,滑阀4停止移动,并且滑阀4与阀体1之间形成一定的液压开度,输出与控制信号成正比的流量。
本双余度电液伺服阀,采用喷嘴挡板先导级和射流偏导板先导级作为控制级,以驱动第二级滑阀级,从而实现了电液伺服阀的非相似余度控制。即利用了喷嘴挡板级输出的大驱动力、高动态特性,也兼顾了射流先导级抗污染能力强的优点。

Claims (4)

1.一种非相似余度电液伺服阀,其特征在于,包括阀体(1)、偏导射流先导级(2)和喷嘴挡板先导级(3);
偏导射流先导级(2)和喷嘴挡板先导级(3)分别通过安装螺钉固定在阀体上;阀体(1)内安装有滑阀(4)、油滤(5)和一对单向阀(6);偏导射流先导级(2)集成一个射流片(7)、偏导板(8)、第一反馈杆(9)和第一力矩马达(10),偏导板(8)与第一反馈杆(9)一体刚性连接,并穿过射流片(7),第一力矩马达(10)通过紧固件固定于偏导射流先导级(2);喷嘴挡板先导级(3)集成一对喷嘴(11)、一对节流孔(12),一个挡板(13)、第二反馈杆(14)和第二力矩马达(15),喷嘴(11)过盈压合于喷嘴挡板先导级(3)中,节流孔(12)通过密封装置安装于喷嘴挡板先导级(3),挡板(13)和第二反馈杆(14)压合于第二力矩马达(15),并穿过喷嘴(11),第二力矩马达(15)通过紧固件固定于喷嘴挡板先导级(3);第一反馈杆(9)与偏导板(8)一体化设计,并与滑阀(4)铰接在一起;第二反馈杆(14)与挡板(13)连接,并与滑阀(4)铰接在一起;
采用偏导射流先导级(2)和喷嘴挡板先导级(3)作为控制级,以驱动第二级滑阀级,实现电液伺服阀的非相似余度控制。
2.根据权利要求1所述的非相似余度电液伺服阀,其特征在于:偏导射流先导级(2)和喷嘴挡板先导级(3)共用滑阀(4)。
3.根据权利要求1所述的非相似余度电液伺服阀,其特征在于:单向阀(6)安装在阀体(1)中喷嘴挡板先导级(3)的控制油路上。
4.根据权利要求3所述的非相似余度电液伺服阀,其特征在于:单向阀(6)开启压力不大于0.08MPa。
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CN108547823A (zh) * 2018-05-24 2018-09-18 同济大学 一种反弹射流式偏导板电液伺服阀
CN108533559B (zh) * 2018-05-24 2019-09-27 同济大学 一种带静压支承的反弹射流式偏导板电液伺服阀
CN108716489B (zh) * 2018-08-07 2020-04-10 上海航天控制技术研究所 一种电液压力伺服阀功率级结构
CN112196854A (zh) * 2020-09-19 2021-01-08 安徽工程大学 一种两级电液伺服阀

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