液動執行(xing)器

液動執(zhi)行器以(yi)液壓(ya)傳遞為動力，其顯著特點是(shi)推動力大，但(dan)體型(xing)笨(ben)重，只適用于需(xu)要大推動力的(de)特定場合，如三峽(xia)的(de)船閥。那么(me)讓我們一(yi)起來看(kan)一(yi)看(kan)液動執行器的優缺(que)點有哪(na)些！他(ta)又有哪(na)些用途呢？

優(you)點：液動(dong)執行器的輸(shu)出推(tui)動(dong)力要高(gao)于和(he)，且液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)的(de)(de)輸出力矩可以根據要求進行(xing)(xing)(xing)精(jing)(jing)確的(de)(de)調整，并將其通過液(ye)壓(ya)(ya)儀表反應(ying)出來。液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)的(de)(de)傳動(dong)(dong)(dong)(dong)(dong)更為(wei)平穩可靠(kao)，有(you)緩沖無撞擊現(xian)象，適(shi)用(yong)于(yu)(yu)對傳動(dong)(dong)(dong)(dong)(dong)要求較(jiao)高(gao)的(de)(de)工作(zuo)環(huan)境(jing)。液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)的(de)(de)調節精(jing)(jing)度高(gao)、響應(ying)速度快(kuai)，能(neng)(neng)(neng)實現(xian)高(gao)精(jing)(jing)確度控制。液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)是使用(yong)液(ye)壓(ya)(ya)油驅動(dong)(dong)(dong)(dong)(dong)，液(ye)體本身有(you)不可壓(ya)(ya)縮的(de)(de)特性，因此液(ye)壓(ya)(ya)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)能(neng)(neng)(neng)輕易獲得(de)較(jiao)好的(de)(de)抗偏離能(neng)(neng)(neng)力。液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)本身配備有(you)蓄能(neng)(neng)(neng)器(qi)(qi)(qi)，在發生(sheng)動(dong)(dong)(dong)(dong)(dong)力故障時，可以進行(xing)(xing)(xing)一次(ci)以上(shang)的(de)(de)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)操作(zuo)，減少緊(jin)急情況(kuang)對生(sheng)產(chan)系統造(zao)成的(de)(de)破壞和影響，特別適(shi)用(yong)于(yu)(yu)長(chang)輸送管路自(zi)動(dong)(dong)(dong)(dong)(dong)控制。液(ye)動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)使用(yong)液(ye)壓(ya)(ya)方式驅動(dong)(dong)(dong)(dong)(dong)，由于(yu)(yu)在操作(zuo)過程中(zhong)不會出現(xian)電動(dong)(dong)(dong)(dong)(dong)設備常見(jian)的(de)(de)打火現(xian)象，因此防爆性能(neng)(neng)(neng)要高(gao)于(yu)(yu)電動(dong)(dong)(dong)(dong)(dong)執(zhi)(zhi)(zhi)行(xing)(xing)(xing)器(qi)(qi)(qi)。

液動執(zhi)行器缺(que)點：液(ye)動執(zhi)行器的(de)工(gong)作需要(yao)外部的(de)液(ye)壓系統(tong)支持，運行液(ye)壓執(zhi)行器要(yao)配備(bei)液(ye)壓站(zhan)和輸油(you)管路，這(zhe)造成液(ye)壓執(zhi)行器相對電動執(zhi)行器和氣動執(zhi)行器來(lai)說，一(yi)次性(xing)投資更大(da)，安裝工(gong)程(cheng)量也更多(duo)，因此只有在較(jiao)大(da)的(de)工(gong)作場合才使用液(ye)動執(zhi)行器。

液動執(zhi)行器用途：液(ye)動執(zhi)行(xing)器的(de)安裝特(te)性決定了它只(zhi)適用(yong)于一(yi)些對執(zhi)行(xing)器控制要求(qiu)較高(gao)的(de)特(te)殊工況。液(ye)動執(zhi)行(xing)器只(zhi)有在大(da)型的(de)電廠(chang)、石(shi)化廠(chang)等企業才有應用(yong)。