HYDAC賀德克溢流閥PWK12120-W-01-C-V-45

HYDAC賀德克溢流閥PWK12120-W-01-C-V-45

液壓閥簡(jian)介

液(ye)(ye)壓(ya)控制閥（簡稱液(ye)(ye)壓(ya)閥）在(zai)(zai)液(ye)(ye)壓(ya)系(xi)統(tong)中的功(gong)用是通過(guo)(guo)控制調(diao)節液(ye)(ye)壓(ya)系(xi)統(tong)中油液(ye)(ye)的流(liu)向(xiang)、壓(ya)力和流(liu)量，使(shi)執行(xing)器及(ji)其驅動(dong)的工作(zuo)機構獲得所(suo)需的運動(dong)方(fang)(fang)向(xiang)、推力（轉矩）及(ji)運動(dong)速度（轉速）等。任(ren)何一個(ge)(ge)液(ye)(ye)壓(ya)系(xi)統(tong)，不論其如(ru)何簡單，都不能缺少(shao)液(ye)(ye)壓(ya)閥；同(tong)一工藝目的的液(ye)(ye)壓(ya)機械設備，通過(guo)(guo)液(ye)(ye)壓(ya)閥的不同(tong)組合(he)(he)使(shi)用，可以組成油路結(jie)構截然不同(tong)的多種(zhong)液(ye)(ye)壓(ya)系(xi)統(tong)方(fang)(fang)案。因(yin)此，液(ye)(ye)壓(ya)閥是液(ye)(ye)壓(ya)技術中品種(zhong)與規格(ge)多、應用泛(fan)、的部分(fen)（元件）；一個(ge)(ge)新設計或(huo)正(zheng)在(zai)(zai)運轉的液(ye)(ye)壓(ya)系(xi)統(tong)，能否(fou)按照(zhao)既(ji)定要求正(zheng)常可靠地運行(xing)，在(zai)(zai)很大程度上(shang)取決于其中所(suo)采用的各種(zhong)液(ye)(ye)壓(ya)閥的性(xing)能優劣及(ji)參數(shu)匹(pi)配是否(fou)合(he)(he)理 [1]  。

按(an)用(yong)途分為溢(yi)流閥(fa)(fa)(fa)、減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)和順(shun)(shun)序(xu)閥(fa)(fa)(fa)。①溢(yi)流閥(fa)(fa)(fa)：能(neng)(neng)(neng)(neng)控(kong)制液壓(ya)(ya)系統在達(da)到調定(ding)壓(ya)(ya)力(li)(li)時保(bao)(bao)持恒定(ding)狀態(tai)。用(yong)于過載(zai)保(bao)(bao)護(hu)的(de)溢(yi)流閥(fa)(fa)(fa)稱(cheng)為安(an)(an)全閥(fa)(fa)(fa)。當系統發生故障，壓(ya)(ya)力(li)(li)升高到可(ke)能(neng)(neng)(neng)(neng)造成破壞的(de)限(xian)定(ding)值(zhi)時，閥(fa)(fa)(fa)口會(hui)打開而(er)溢(yi)流，以(yi)(yi)保(bao)(bao)證系統的(de)安(an)(an)全。②減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)：能(neng)(neng)(neng)(neng)控(kong)制分支(zhi)回路(lu)得(de)到比主回路(lu)油(you)壓(ya)(ya)低的(de)穩定(ding)壓(ya)(ya)力(li)(li)。減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)按(an)它(ta)所控(kong)制的(de)壓(ya)(ya)力(li)(li)功(gong)能(neng)(neng)(neng)(neng)不同，又可(ke)分為定(ding)值(zhi)減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)（輸(shu)出(chu)壓(ya)(ya)力(li)(li)為恒定(ding)值(zhi)）、定(ding)差(cha)減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)（輸(shu)入與輸(shu)出(chu)壓(ya)(ya)力(li)(li)差(cha)為定(ding)值(zhi)）和定(ding)比減(jian)(jian)壓(ya)(ya)閥(fa)(fa)(fa)（輸(shu)入與輸(shu)出(chu)壓(ya)(ya)力(li)(li)間(jian)保(bao)(bao)持一定(ding)的(de)比例(li)）。③順(shun)(shun)序(xu)閥(fa)(fa)(fa)：能(neng)(neng)(neng)(neng)使一個執行元(yuan)件(jian)（如液壓(ya)(ya)缸、液壓(ya)(ya)馬達(da)等(deng)）動(dong)作以(yi)(yi)后,再按(an)順(shun)(shun)序(xu)使其他執行元(yuan)件(jian)動(dong)作 [2]  

液壓(ya)閥簡介

液(ye)(ye)壓(ya)(ya)控制閥(fa)(fa)（簡(jian)稱(cheng)液(ye)(ye)壓(ya)(ya)閥(fa)(fa)）在液(ye)(ye)壓(ya)(ya)系統(tong)(tong)中(zhong)的(de)(de)(de)功用(yong)是通過控制調節(jie)液(ye)(ye)壓(ya)(ya)系統(tong)(tong)中(zhong)油液(ye)(ye)的(de)(de)(de)流向、壓(ya)(ya)力和流量，使(shi)執(zhi)行(xing)器及(ji)其(qi)驅動的(de)(de)(de)工作機構獲(huo)得所(suo)需的(de)(de)(de)運(yun)動方向、推(tui)力（轉矩(ju)）及(ji)運(yun)動速度（轉速）等。任何一個(ge)(ge)液(ye)(ye)壓(ya)(ya)系統(tong)(tong)，不論其(qi)如(ru)何簡(jian)單，都不能(neng)缺(que)少液(ye)(ye)壓(ya)(ya)閥(fa)(fa)；同(tong)一工藝目(mu)的(de)(de)(de)的(de)(de)(de)液(ye)(ye)壓(ya)(ya)機械設備(bei)，通過液(ye)(ye)壓(ya)(ya)閥(fa)(fa)的(de)(de)(de)不同(tong)組(zu)合使(shi)用(yong)，可以組(zu)成油路結構截然不同(tong)的(de)(de)(de)多(duo)種(zhong)(zhong)液(ye)(ye)壓(ya)(ya)系統(tong)(tong)方案(an)。因此，液(ye)(ye)壓(ya)(ya)閥(fa)(fa)是液(ye)(ye)壓(ya)(ya)技術中(zhong)品種(zhong)(zhong)與規格(ge)多(duo)、應(ying)用(yong)泛、的(de)(de)(de)部分(fen)（元件）；一個(ge)(ge)新設計或正在運(yun)轉的(de)(de)(de)液(ye)(ye)壓(ya)(ya)系統(tong)(tong)，能(neng)否按照既定要求正常可靠地運(yun)行(xing)，在很大程度上取決于其(qi)中(zhong)所(suo)采用(yong)的(de)(de)(de)各種(zhong)(zhong)液(ye)(ye)壓(ya)(ya)閥(fa)(fa)的(de)(de)(de)性(xing)能(neng)優劣(lie)及(ji)參數匹配(pei)是否合理 [1]  。

按用途分為(wei)溢流(liu)閥(fa)(fa)、減壓(ya)(ya)閥(fa)(fa)和(he)順(shun)序閥(fa)(fa)。①溢流(liu)閥(fa)(fa)：能控(kong)制液(ye)(ye)壓(ya)(ya)系統在達到調定(ding)(ding)壓(ya)(ya)力(li)(li)(li)時(shi)保(bao)持恒定(ding)(ding)狀(zhuang)態(tai)。用于過(guo)載(zai)保(bao)護的溢流(liu)閥(fa)(fa)稱(cheng)為(wei)安全閥(fa)(fa)。當系統發生故障，壓(ya)(ya)力(li)(li)(li)升高到可能造成(cheng)破壞的限定(ding)(ding)值(zhi)時(shi)，閥(fa)(fa)口(kou)會(hui)打開(kai)而溢流(liu)，以保(bao)證系統的安全。②減壓(ya)(ya)閥(fa)(fa)：能控(kong)制分支回(hui)路(lu)得到比主回(hui)路(lu)油壓(ya)(ya)低的穩定(ding)(ding)壓(ya)(ya)力(li)(li)(li)。減壓(ya)(ya)閥(fa)(fa)按它(ta)所控(kong)制的壓(ya)(ya)力(li)(li)(li)功能不同，又可分為(wei)定(ding)(ding)值(zhi)減壓(ya)(ya)閥(fa)(fa)（輸(shu)出(chu)(chu)壓(ya)(ya)力(li)(li)(li)為(wei)恒定(ding)(ding)值(zhi)）、定(ding)(ding)差(cha)(cha)減壓(ya)(ya)閥(fa)(fa)（輸(shu)入(ru)與(yu)輸(shu)出(chu)(chu)壓(ya)(ya)力(li)(li)(li)差(cha)(cha)為(wei)定(ding)(ding)值(zhi)）和(he)定(ding)(ding)比減壓(ya)(ya)閥(fa)(fa)（輸(shu)入(ru)與(yu)輸(shu)出(chu)(chu)壓(ya)(ya)力(li)(li)(li)間(jian)保(bao)持一定(ding)(ding)的比例）。③順(shun)序閥(fa)(fa)：能使一個執(zhi)(zhi)行元件(jian)（如液(ye)(ye)壓(ya)(ya)缸、液(ye)(ye)壓(ya)(ya)馬(ma)達等）動作(zuo)以后(hou),再按順(shun)序使其他執(zhi)(zhi)行元件(jian)動作(zuo) [2]