金福彩票

宁波昊瑞液压是专业销售摆线马达,摆线液压马达液压马达厂家

液压系统元件选型要点分析

液压系统元件选型要点分析


一、液压泵的确定与所需功率的计算

1.液压泵的确定

金福彩票(1)QUEDINGYEYABENGDEZUIDAGONGZUOYALI。YEYABENGSUOXUGONGZUOYALIDEQUEDING,ZHUYAOGENJUYEYAGANGZAIGONGZUOXUNHUANGEJIEDUANSUOXUZUIDAYALIp1,ZAIJIASHANGYOUBENGDECHUYOUKOUDAOGANGJINYOUKOUCHUZONGDEYALISUNSHIΣΔp,JIpB=p1+ΣΔp,ΣΔp BAOKUOYOUYELIUJINGLIULIANGFAHEQITAYUANJIANDEJUBUYALISUNSHI、GUANLUYANCHENGSUNSHIDENG,ZAIXITONGGUANLUWEISHEJIZHIQIAN,KEGENJUTONGLEIXITONGJINGYANGUJI,YIBANGUANLUJIANDANDEJIELIUFADIAOSUXITONG?ΣΔpWEI (2~5)×105Pa,YONGDIAOSUFAJIGUANLUFUZADEXITONGΣΔpWEI(5~15)×105Pa,ΣΔpYEKEZHIKAOLVLIUJINGGEKONGZHIFADEYALISUNSHI,ERJIANGGUANLUXITONGDEYANCHENGSUNSHIHULVEBUJI,GEFADEEDINGYALISUNSHIKECONGYEYAYUANJIANSHOUCEHUOCHANPINYANGBENZHONGCHAZHAO,YEKECANZHAOXIABIAOXUANQU。

常用中、低压各类阀的压力损失(Δpn)


金福彩票(2)QUEDINGYEYABENGDELIULIANGqB。BENGDELIULIANGqBGENJUZHIXINGYUANJIANDONGZUOXUNHUANSUOXUZUIDALIULIANGqmaxHEXITONGDEXIELOUQUEDING。


①DUOYEYAGANGTONGSHIDONGZUOSHI,YEYABENGDELIULIANGYAODAYUTONGSHIDONGZUODEJIGEYEYAGANG(HUOMADA)SUOXUDEZUIDALIULIANG,BINGYINGKAOLVXITONGDEXIELOUHEYEYABENGMOSUNHOURONGJIXIAOLVDEXIAJIANG,JIqB≥K(Σq)max(m3/s),SHIZHONG:KWEIXITONGXIELOUXISHU,YIBANQU1.1~1.3,DALIULIANGQUXIAOZHI,XIAOLIULIANGQUDAZHI;(Σq)maxWEITONGSHIDONGZUODEYEYAGANG(HUOMADA)DEZUIDAZONGLIULIANG(m3/s)。


②CAIYONGCHADONGYEYAGANGHUILUSHI,YEYABENGSUOXULIULIANGWEI:qB≥K(A1-A2)vmax(m3/s),SHIZHONG:A 1,A 2WEIFENBIEWEIYEYAGANGWUGANQIANGYUYOUGANQIANGDEYOUXIAOMIANJI(m2);vmaxWEIHUOSAIDEZUIDAYIDONGSUDU(m/s)。


③DANGXITONGSHIYONGXUNENGQISHI,YEYABENGLIULIANGANXITONGZAIYIGEXUNHUANZHOUQIZHONGDEPINGJUNLIULIANGXUANQU,JIqB= ViK/Ti,SHIZHONG:ViWEIYEYAGANGZAIGONGZUOZHOUQIZHONGDEZONGHAOYOULIANG(m3);TiWEIJIQIDEGONGZUOZHOUQI(s);ZWEIYEYAGANGDEGESHU。


金福彩票(3)XUANZEYEYABENGDEGUIGE:GENJUSHANGMIANSUOJISUANDEZUIDAYALIpBHELIULIANGqB,CHAYEYAYUANJIANCHANPINYANGBEN,XUANZEYUPBHEqBXIANGDANGDEYEYABENGDEGUIGEXINGHAO。


SHANGMIANSUOJISUANDEZUIDAYALIpBSHIXITONGJINGTAIYALI,XITONGGONGZUOGUOCHENGZHONGCUNZAIZHEGUODUGUOCHENGDEDONGTAIYALI,ERDONGTAIYALIWANGWANGBIJINGTAIYALIGAODEDUO,SUOYIBENGDEEDINGYALIpBYINGBIXITONGZUIGAOYALIDA25%~60%,SHIYEYABENGYOUYIDINGDEYALICHUBEI。RUOXITONGSHUYUGAOYAFANWEI,YALICHUBEIQUXIAOZHI;RUOXITONGSHUYUZHONGDIYAFANWEI,YALICHUBEIQUDAZHI。


(4)QUEDINGQUDONGYEYABENGDEGONGLV。

金福彩票①DANGYEYABENGDEYALIHELIULIANGBIJIAOHENGDINGSHI,SUOXUGONGLVWEI:p=pBqB/103ηB (kW)SHIZHONG:pBWEIYEYABENGDEZUIDAGONGZUOYALI(N/m2);qBWEIYEYABENGDELIULIANG(m3/s);ηBWEIYEYABENGDEZONGXIAOLV,GEZHONGXINGSHIYEYABENGDEZONGXIAOLVKECANKAOXIABIAOGUQU,YEYABENGGUIGEDA,QUDAZHI,FANZHIQUXIAOZHI,DINGLIANGBENGQUDAZHI,BIANLIANGBENGQUXIAOZHI。


YEYABENGDEZONGXIAOLV


②ZAIGONGZUOXUNHUANZHONG,BENGDEYALIHELIULIANGYOUXIANZHUBIANHUASHI,KEFENBIEJISUANCHUGONGZUOXUNHUANZHONGGEGEJIEDUANSUOXUDEQUDONGGONGLV,RANHOUQIUQIPINGJUNZHI,JIp=

SHIZHONG:t1,t2,…,tnWEIYIGEGONGZUOXUNHUANZHONGGEJIEDUANSUOXUDESHIJIAN(s);P1,P2,…,PnWEIYIGEGONGZUOXUNHUANZHONGGEJIEDUANSUOXUDEGONGLV(kW)。

金福彩票ANSHANGSHUGONGLVHEBENGDEZHUANSU,KEYICONGCHANPINYANGBENZHONGXUANQUBIAOZHUNDIANDONGJI,ZAIJINXINGYANSUAN,SHIDIANDONGJIFACHUZUIDAGONGLVSHI,QICHAOZAILIANGZAIYUNXUFANWEINEI。


二、阀类元件的选择

1.选择依据

XUANZEYIJUWEI:EDINGYALI,ZUIDALIULIANG,DONGZUOFANGSHI,ANZHUANGGUDINGFANGSHI,YALISUNSHISHUZHI,GONGZUOXINGNENGCANSHUHEGONGZUOSHOUMINGDENG。


2.选择阀类元件应注意的问题

(1)YINGJINLIANGXUANYONGBIAOZHUNDINGXINGCHANPIN,CHUFEIBUDEYISHICAIZIXINGSHEJIZHUANYONGJIAN。

金福彩票(2)FALEIYUANJIANDEGUIGEZHUYAOGENJULIUJINGGAIFAYOUYEDEZUIDAYALIHEZUIDALIULIANGXUANQU。XUANZEYILIUFASHI,YINGANYEYABENGDEZUIDALIULIANGXUANQU;XUANZEJIELIUFAHEDIAOSUFASHI,YINGKAOLVQIZUIXIAOWENDINGLIULIANGMANZUJIQIDISUXINGNENGDEYAOQIU。

(3)YIBANXUANZEKONGZHIFADEEDINGLIULIANGYINGBIXITONGGUANLUSHIJITONGGUODELIULIANGDAYIXIE,BIYAOSHI,YUNXUTONGGUOFADEZUIDALIULIANGCHAOGUOQIEDINGLIULIANGDE20%。


三、蓄能器的选择

金福彩票1.XUNENGQIYONGYUBUCHONGYEYABENGGONGYOUBUZUSHI,QIYOUXIAORONGJIWEI:V=ΣAiLiK-qBt(m3)

金福彩票SHIZHONG:AWEIYEYAGANGYOUXIAOMIANJI(m2);LWEIYEYAGANGXINGCHENG(m);KWEIYEYAGANGSUNSHIXISHU,GUSUANSHIKEQUK=1.2;qBWEIYEYABENGGONGYOULIULIANG(m3/s);tWEIDONGZUOSHIJIAN(s)。


2.XUNENGQIZUOYINGJINENGYUANSHI,QIYOUXIAORONGJIWEI:V=ΣAiLiK(m3)

DANGXUNENGQIYONGYUXISHOUMAIDONGHUANHEYEYACHONGJISHI,YINGJIANGQIZUOWEIXITONGZHONGDEYIGEHUANJIEYUQIGUANLIANBUFENYIQIZONGHEKAOLVQIYOUXIAORONGJI。

金福彩票GENJUQIUCHUDEYOUXIAORONGJIBINGKAOLVQITAYAOQIU,JIKEXUANZEXUNENGQIDEXINGSHI。


四、管道的选择

1.油管类型的选择

金福彩票YEYAXITONGZHONGSHIYONGDEYOUGUANFENYINGGUANHERUANGUAN,XUANZEDEYOUGUANYINGYOUZUGOUDETONGLIUJIEMIANHECHENGYANENGLI,TONGSHI,YINGJINLIANGSUODUANGUANLU,BIMIANJIZHUANWANHEJIEMIANTUBIAN。


金福彩票(1)GANGGUAN:ZHONGGAOYAXITONGXUANYONGWUFENGGANGGUAN,DIYAXITONGXUANYONGHANJIEGANGGUAN,GANGGUANJIAGEDI,XINGNENGHAO,SHIYONGGUANGFAN。


金福彩票(2)TONGGUAN:ZITONGGUANGONGZUOYALIZAI6.5~10?MPaYIXIA,YIBIANQU,BIANYUZHUANGPEI;HUANGTONGGUANCHENGSHOUYALIJIAOGAO,DA25MPa,BURUZITONGGUANYIWANQU。TONGGUANJIAGEGAO,KANGZHENNENGLIRUO,YISHIYOUYEYANGHUA,YINGJINLIANGSHAOYONG,ZHIYONGYUYEYAZHUANGZHIPEIJIEBUFANGBIANDEBUWEI。


(3)RUANGUAN:YONGYULIANGGEXIANGDUIYUNDONGJIANZHIJIANDELIANJIE。GAOYAXIANGJIAORUANGUANZHONGJIAYOUGANGSIBIANZHIWU;DIYAXIANGJIAORUANGUANZHONGJIAYOUMIANXIANHUOMAXIANBIANZHIWU;NILONGGUANSHIRUBAISEBANTOUMINGGUAN,CHENGYANENGLIWEI2.5~8MPa,DUOYONGYUDIYAGUANDAO。YINRUANGUANDANXINGBIANXINGDA,RONGYIYINQIYUNDONGBUJIANPAXING,SUOYIRUANGUANBUYIZHUANGZAIYEYAGANGHEDIAOSUFAZHIJIAN。


2.油管尺寸的确定

(1)YOUGUANNEIJINGdANXIASHIJISUAN:d=

SHIZHONG:qWEITONGGUOYOUGUANDEZUIDALIULIANG(m3/s);vWEIGUANDAONEIYUNXUDELIUSU(m/s)。YIBANXIYOUGUANQU0.5~5(m/s);YALIYOUGUANQU2.5~5(m/s);HUIYOUGUANQU1.5~2(m/s)。


(2)YOUGUANBIHOUδANXIASHIJISUAN:δ≥p?d/2〔σ〕

SHIZHONG:pWEIGUANNEIZUIDAGONGZUOYALI;〔σ〕WEIYOUGUANCAILIAODEXUYONGYALI,〔σ〕=σb/n;σbWEICAILIAODEKANGLAQIANGDU;nWEIANQUANXISHU,GANGGUANp<7MPaSHI,QUn=8;p<17.5MPaSHI,QUn=6;p>17.5MPaSHI,QUn=4。

GENJUJISUANCHUDEYOUGUANNEIJINGHEBIHOU,CHASHOUCEXUANQUBIAOZHUNGUIGEYOUGUAN。


五、油箱的设计

金福彩票YOUXIANGDEZUOYONGSHICHUYOU,SANFAYOUDERELIANG,CHENDIANYOUZHONGZAZHI,YICHUYOUZHONGDEQITI。QIXINGSHIYOUKAISHIHEBISHILIANGZHONG:KAISHIYOUXIANGYOUYEYEMIANYUDAQIXIANGTONG;BISHIYOUXIANGYOUYEYEMIANYUDAQIGEJUE。KAISHIYOUXIANGYINGYONGJIAODUO。


1.油箱设计要点

金福彩票(1)YOUXIANGYINGYOUZUGOUDERONGJIYIMANZUSANRE,TONGSHIQIRONGJIYINGBAOZHENGXITONGZHONGYOUYEQUANBULIUHUIYOUXIANGSHIBUSHENCHU,YOUYEYEMIANBUYINGCHAOGUOYOUXIANGGAODUDE80%。

(2)XIXIANGGUANHEHUIYOUGUANDEJIANJUYINGJINLIANGDA。

(3)YOUXIANGDIBUYINGYOUSHIDANGXIEDU,XIEYOUKOUZHIYUZUIDICHU,YIBIANPAIYOU。

金福彩票(4)ZHUYOUQISHANGYINGZHUANGLVWANG。

(5)YOUXIANGDEXIANGBIYINGTUNAIYOUFANGXIUTULIAO。


2.油箱容量计算油箱的有效容量V可近似用液压泵单位时间内排出油液的体积确定。V=KΣq

金福彩票SHIZHONG:KWEIXISHU,DIYAXITONGQU2~4,ZHONG、GAOYAXITONGQU5~7;ΣqWEITONGYIYOUXIANGGONGYOUDEGEYEYABENGLIULIANGZONGHE 。


六、滤油器的选择

金福彩票XUANZELVYOUQIDEYIJUYOUYIXIAJIDIAN:

金福彩票(1)CHENGZAINENGLI:ANXITONGGUANLUGONGZUOYALIQUEDING。

(2)GUOLVJINGDU:ANBEIBAOHUYUANJIANDEJINGDUYAOQIUQUEDING,XUANZESHIKECANYUEXIABIAO。

(3)TONGLIUNENGLI:ANTONGGUOZUIDALIULIANGQUEDING。

(4)ZULIYAJIANG:YINGMANZUGUOLVCAILIAOQIANGDUYUXISHUYAOQIU。


LVYOUQIGUOLVJINGDUDEXUANZE