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一、煤安礦用防爆開關型電動裝置基本介紹

ZB系(xi)列(lie)煤礦用隔爆型(xing)(xing)閥(fa)(fa)(fa)門(men)(men)電動執(zhi)行器，又稱(cheng)為(wei)ZB 型(xing)(xing)隔爆型(xing)(xing)閥(fa)(fa)(fa)門(men)(men)電動裝置。適用于啟(qi)閉件做直(zhi)線(xian)運(yun)動的閥(fa)(fa)(fa)門(men)(men)，如閘(zha)閥(fa)(fa)(fa)、截止(zhi)閥(fa)(fa)(fa)、隔膜(mo)閥(fa)(fa)(fa)、水閘(zha)閥(fa)(fa)(fa)等(deng)。如增(zeng)加 二級減(jian)速后可用于蝶閥(fa)(fa)(fa)、風(feng)門(men)(men)和風(feng)道(dao)閥(fa)(fa)(fa)等(deng)。用于閥(fa)(fa)(fa)門(men)(men)的開啟(qi)、關閉或調節，是實現閥(fa)(fa)(fa)門(men)(men)遠控(kong)(kong)、集控(kong)(kong)的驅動裝置。

ZB 系列隔爆(bao)型閥門電動裝置，必須和(he)相對應的 KXBC隔爆(bao)型控制(zhi)箱配套(tao)使用(yong)。

ZB 系列隔(ge)爆型(xing)閥門電動裝置(zhi)的(de)性能(neng)不僅執行JB/T8528-1997《普通(tong)(tong)型(xing)閥門電動裝置(zhi)技(ji)(ji)術要求》的(de)規(gui) 定而且執行GB3836.1-2000《型(xing)氣體環(huan)境用電氣設備第1部分：通(tong)(tong)用要求》，GB3836.2-2000《氣體環(huan)境用電氣設備第2部分：隔(ge)爆型(xing)“d"》及Q/320412BSK001－2007《礦用閥門電動裝置(zhi)技(ji)(ji)術條件》 的(de)規(gui)定。

防爆型(xing)式為(wei)：礦用隔爆型(xing)，防爆標(biao)志為(wei) Ex dⅠ。

二、煤安礦用防爆開關型電動裝置特點

參數電源：380V、660V（額定電壓）

控制電壓：24V、36V

工 作 制：為短時10分鐘

工作環(huan)境(jing)：a.海拔不大(da)于(yu)(yu)2000m；b.環(huan)境(jing)溫(wen)度(du)：-20～+40℃；c.相對(dui)濕度(du)：≤95%（+25℃時）；d.用(yong)于(yu)(yu)含有(you)煤塵(chen)爆炸性危險(xian)氣體(ti)的(de)煤礦井下（采掘工作面除外）；

ZB10-24礦用防(fang)爆電動執行器操(cao)作方式

ZB型(xing)電動(dong)裝(zhuang)置(zhi)由(you)電動(dong)機、減速機構(gou)(gou)、力矩(ju)控(kong)制機構(gou)(gou)、行程(cheng)控(kong)制機構(gou)(gou)、開度指(zhi)示機構(gou)(gou)、手-電動(dong)切換機構(gou)(gou)、手輪及電氣部分(fen)組成。

電動機：取得MA證的閥(fa)門(men)電動裝置用(yong)隔爆型三相異步(bu)電動機

減(jian)速(su)機(ji)構：由一(yi)對直齒輪(lun)和蝸輪(lun)副(fu)兩(liang)級傳動(dong)(dong)組成；電動(dong)(dong)機(ji)的動(dong)(dong)力(li)經減(jian)速(su)機(ji)構傳遞(di)給(gei)輸出軸(zhou)。

力矩控制(zhi)機(ji)構：當輸(shu)(shu)出(chu)(chu)軸上受到一定轉矩后，蝸桿(gan)除(chu)旋轉外還產生軸向位移(yi)(yi)，帶(dai)(dai)動曲拐，曲拐通過(guo)撞塊帶(dai)(dai)動支(zhi)架產生角(jiao)位移(yi)(yi)；當輸(shu)(shu)出(chu)(chu)軸上的轉矩增大到整定轉矩時，則(ze)支(zhi)架產生的位移(yi)(yi)量使(shi)力矩開關動作(zuo)，從而切斷電(dian)(dian)機(ji)電(dian)(dian)源，電(dian)(dian)動機(ji)停轉。以(yi)此實現(xian)對電(dian)(dian)動裝置輸(shu)(shu)出(chu)(chu)轉矩的控制(zhi)，達到保護電(dian)(dian)動閥門(men)的目(mu)的。

行程控(kong)(kong)(kong)制(zhi)機構(gou)(gou)：采用十(shi)進制(zhi)計數(shu)(shu)器原理(li)，又稱為計數(shu)(shu)器，控(kong)(kong)(kong)制(zhi)精(jing)度高，其工(gong)作原理(li)為：由減速箱內(nei)的(de)一對(dui)大(da)小(xiao)(xiao)傘齒(chi)輪帶動(dong)中(zhong)傳(chuan)小(xiao)(xiao)齒(chi)輪，再帶動(dong)行程控(kong)(kong)(kong)制(zhi)機構(gou)(gou)工(gong)作。如果行程控(kong)(kong)(kong)制(zhi)機構(gou)(gou)按閥(fa)門開、關的(de)位置(zhi)已調(diao)整好(hao)，當行程控(kong)(kong)(kong)制(zhi)機構(gou)(gou)隨輸(shu)出(chu)軸轉動(dong)到預先調(diao)整好(hao)的(de)位置(zhi)（圈(quan)數(shu)(shu)）時，則凸輪將向行程開關轉動(dong)，迫使(shi)行程開關動(dong)作，切斷(duan)電(dian)動(dong)機電(dian)源，電(dian)動(dong)機停轉，從而實(shi)現(xian)對(dui)電(dian)動(dong)裝置(zhi)行程（轉圈(quan)數(shu)(shu)）的(de)控(kong)(kong)(kong)制(zhi)。

開度指(zhi)(zhi)示機構：輸入齒輪由計數器個(ge)位(wei)(wei)齒輪帶(dai)動(dong)(dong)(dong)，經減速(su)后(hou)，指(zhi)(zhi)示盤(pan)隨閥門的開關(guan)過程(cheng)同(tong)時(shi)轉(zhuan)(zhuan)動(dong)(dong)(dong)，以(yi)指(zhi)(zhi)示閥門的開關(guan)量，電(dian)位(wei)(wei)器軸和指(zhi)(zhi)示盤(pan)同(tong)步轉(zhuan)(zhuan)動(dong)(dong)(dong)，供(gong)遠傳開度指(zhi)(zhi)示用。移動(dong)(dong)(dong)轉(zhuan)(zhuan)圈(quan)數調整齒輪可以(yi)改變轉(zhuan)(zhuan)圈(quan)數。開度指(zhi)(zhi)示機構內設一(yi)微(wei)動(dong)(dong)(dong)開關(guan)和凸輪，當電(dian)動(dong)(dong)(dong)裝置(zhi)運轉(zhuan)(zhuan)時(shi)，旋轉(zhuan)(zhuan)凸輪周期(qi)性地使微(wei)動(dong)(dong)(dong)開關(guan)動(dong)(dong)(dong)作，其(qi)頻率為輸出軸轉(zhuan)(zhuan)動(dong)(dong)(dong)一(yi)圈(quan)動(dong)(dong)(dong)作一(yi)次或二次，可供(gong)閃光信號使用。

手(shou)-電(dian)(dian)動(dong)(dong)(dong)(dong)切(qie)換(huan)(huan)(huan)：為(wei)(wei)半自(zi)動(dong)(dong)(dong)(dong)切(qie)換(huan)(huan)(huan)，手(shou)動(dong)(dong)(dong)(dong)時(shi)需扳動(dong)(dong)(dong)(dong)手(shou)柄(bing)切(qie)換(huan)(huan)(huan)，手(shou)動(dong)(dong)(dong)(dong)狀(zhuang)(zhuang)態轉(zhuan)(zhuan)變為(wei)(wei)電(dian)(dian)動(dong)(dong)(dong)(dong)時(shi)則自(zi)動(dong)(dong)(dong)(dong)運行。它由手(shou)柄(bing)、切(qie)換(huan)(huan)(huan)件、直(zhi)立(li)桿(gan)、離(li)合器、壓(ya)簧(huang)等組成(cheng)。需手(shou) 作時(shi)，將手(shou)柄(bing)向手(shou)動(dong)(dong)(dong)(dong)方向推動(dong)(dong)(dong)(dong)，切(qie)換(huan)(huan)(huan)件使離(li)合器抬高(gao)，并壓(ya)迫壓(ya)簧(huang)。當手(shou)柄(bing)推到一定位置(zhi)時(shi)，離(li)合器即(ji)脫離(li)蝸輪(lun)(lun)(lun)而與手(shou)輪(lun)(lun)(lun)嚙(nie)合，同(tong)(tong)時(shi)直(zhi)立(li)桿(gan)在扭簧(huang)作用(yong)下(xia)(xia)直(zhi)立(li)于(yu)蝸輪(lun)(lun)(lun)端(duan)(duan)面(mian)，支(zhi)(zhi)撐住離(li)合器不致下(xia)(xia)落，切(qie)換(huan)(huan)(huan)完成(cheng)即(ji)可(ke)放(fang)開手(shou)柄(bing)，使用(yong)手(shou)輪(lun)(lun)(lun)進行操作。需要電(dian)(dian)動(dong)(dong)(dong)(dong)操作時(shi)，電(dian)(dian)動(dong)(dong)(dong)(dong)機將帶(dai)動(dong)(dong)(dong)(dong)蝸輪(lun)(lun)(lun)轉(zhuan)(zhuan)動(dong)(dong)(dong)(dong)，支(zhi)(zhi)承于(yu)蝸輪(lun)(lun)(lun)端(duan)(duan)面(mian)的直(zhi)立(li)桿(gan)即(ji)倒下(xia)(xia)，在壓(ya)簧(huang)作用(yong)下(xia)(xia)離(li)合器迅速(su)向蝸輪(lun)(lun)(lun)方向移動(dong)(dong)(dong)(dong)，并與蝸輪(lun)(lun)(lun)嚙(nie)合，同(tong)(tong)時(shi)與手(shou)輪(lun)(lun)(lun)脫開，自(zi)動(dong)(dong)(dong)(dong)實現手(shou)動(dong)(dong)(dong)(dong)到電(dian)(dian)動(dong)(dong)(dong)(dong)狀(zhuang)(zhuang)態的轉(zhuan)(zhuan)換(huan)(huan)(huan)。