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摘 要 :(1)滿足增安型防爆(bao)電(dian)機的要求,采(cai)取(qu)一(yi)系(xi)列可靠(kao)的防止火花、電(dian)弧和危險(xian)高溫的措(cuo)施,可以安全運行于2區爆(bao)炸危險(xian)場所。 (2)采(cai)用無(wu)(wu)刷勵(li)磁(ci),設(she)置旋(xuan)轉整(zheng)流(liu)盤和靜態勵(li)磁(ci)柜(ju),勵(li)磁(ci)控制系(xi)統可靠(kao);順極性轉差(cha)投(tou)勵(li)準確(que),無(wu)(wu)沖擊(ji);勵(li)磁(ci)系(xi)統失步保護可靠(kao),再整(zheng)步能力強;線路設(she)計合(he)理,放電(dian)電(dian)阻在(zai)
2020-12-18 -
摘 要 :高(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)機(ji)是(shi)指(zhi)(zhi)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)高(gao)低來(lai)區分的(de)(de)。如通常1000V以上(shang)認為是(shi)高(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)機(ji),380V、660V為低壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)機(ji)。普通電(dian)(dian)(dian)(dian)機(ji)指(zhi)(zhi)的(de)(de)是(shi)相對特殊電(dian)(dian)(dian)(dian)機(ji)。如拖動(dong)水泵、風機(ji)、壓(ya)(ya)(ya)縮(suo)機(ji)、破碎機(ji)等的(de)(de)電(dian)(dian)(dian)(dian)動(dong)機(ji)。 高(gao)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)機(ji)是(shi)指(zhi)(zhi)額定電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)在1000V以上(shang)電(dian)(dian)(dian)(dian)動(dong)機(ji)。常使用的(de)(de)是(shi)6000V和10000V電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),由于(yu)國外的(de)(de)電(dian)(dian)(dian)(dian)網
2020-12-18 -
摘 要 :電(dian)(dian)(dian)機(ji)(ji)(英文:Electric machinery,俗(su)稱“馬達(da)”)是(shi)指依據電(dian)(dian)(dian)磁(ci)感應定律實現電(dian)(dian)(dian)能(neng)轉(zhuan)換或傳遞的一種(zhong)電(dian)(dian)(dian)磁(ci)裝置。 電(dian)(dian)(dian)機(ji)(ji)在電(dian)(dian)(dian)路中是(shi)用字(zi)母M(舊標準用D)表(biao)示,它(ta)的主要作(zuo)用是(shi)產生(sheng)驅動(dong)轉(zhuan)矩,作(zuo)為(wei)用電(dian)(dian)(dian)器(qi)或各種(zhong)機(ji)(ji)械(xie)的動(dong)力源(yuan),發(fa)電(dian)(dian)(dian)機(ji)(ji)在電(dian)(dian)(dian)路中用字(zi)母G表(biao)示,它(ta)的主要作(zuo)用是(shi)利用機(ji)(ji)
2020-12-18 -
摘 要 :1、在(zai)一些具(ju)有爆炸(zha)危險的場所,當氣(qi)體或粉(fen)(fen)塵遇(yu)著點火源或高溫,就(jiu)會發生(sheng)燃燒或爆炸(zha)。而(er)電(dian)機(ji)在(zai)運行中,可(ke)能會發生(sheng)電(dian)弧或電(dian)火花(hua),這些都是(shi)強點火源,遇(yu)到爆炸(zha)性的粉(fen)(fen)塵或氣(qi)體,就(jiu)可(ke)能要發生(sheng)爆炸(zha)。 2、隔爆型電(dian)機(ji)的防爆原理是(shi):將電(dian)機(ji)的帶電(dian)部件放在(zai)特制的外殼(ke)內,該外殼(ke)具(ju)有將殼(ke)內電(dian)氣(qi)部件
2020-12-18 -
摘 要(yao) :直流無(wu)(wu)刷電(dian)動(dong)機(ji)(ji)與一般直流電(dian)動(dong)機(ji)(ji)具有(you)相同的(de)(de)工作原理和應用(yong)特性,而其組成(cheng)是不一樣的(de)(de)。除了電(dian)機(ji)(ji)本身(shen)(shen)外,前者(zhe)還多(duo)一個換(huan)(huan)向(xiang)電(dian)路(lu),電(dian)機(ji)(ji)本身(shen)(shen)和換(huan)(huan)向(xiang)電(dian)路(lu)緊密結合在(zai)一起。許(xu)多(duo)小(xiao)功率(lv)電(dian)動(dong)機(ji)(ji)的(de)(de)電(dian)機(ji)(ji)本身(shen)(shen)是與換(huan)(huan)向(xiang)電(dian)路(lu)合成(cheng)一體,從外觀上看直流無(wu)(wu)刷電(dian)動(dong)機(ji)(ji)與直流電(dian)動(dong)機(ji)(ji)完全一樣。 直流無(wu)(wu)刷電(dian)動(dong)機(ji)(ji)的(de)(de)電(dian)機(ji)(ji)本身(shen)(shen)是機(ji)(ji)
2020-12-18 -
摘(zhai) 要 :一、高(gao)(gao)壓(ya)電動(dong)(dong)機的(de)優點是(shi)功率大(da),承受沖擊能(neng)力強(qiang) 二、高(gao)(gao)壓(ya)電動(dong)(dong)機的(de)缺點是(shi)慣性大(da),啟動(dong)(dong)和制動(dong)(dong)都困難。 三、高(gao)(gao)壓(ya)電動(dong)(dong)機可用(yong)于礦山、石油化(hua)工(gong)企業中 四、高(gao)(gao)壓(ya)電動(dong)(dong)機可分為(wei)高(gao)(gao)壓(ya)同步式;高(gao)(gao)壓(ya)異步式;高(gao)(gao)壓(ya)異步繞(rao)線式;高(gao)(gao)壓(ya)鼠籠型等等。 五、高(gao)(gao)壓(ya)電動(dong)(dong)機的(de)
2020-12-18 -
摘(zhai) 要 :步(bu)進(jin)電(dian)(dian)機(ji)是一種離散運動(dong)(dong)的(de)(de)裝(zhuang)置,它和現代數(shu)(shu)字(zi)(zi)控(kong)制(zhi)(zhi)技術有著本質的(de)(de)聯系。在目(mu)前國內的(de)(de)數(shu)(shu)字(zi)(zi)控(kong)制(zhi)(zhi)系統(tong)中,步(bu)進(jin)電(dian)(dian)機(ji)的(de)(de)應用十分(fen)廣泛。隨著全(quan)數(shu)(shu)字(zi)(zi)式交流伺(si)服(fu)系統(tong)的(de)(de)出現,交流伺(si)服(fu)電(dian)(dian)機(ji)也越來越多(duo)地應用于數(shu)(shu)字(zi)(zi)控(kong)制(zhi)(zhi)系統(tong)中。為了適應數(shu)(shu)字(zi)(zi)控(kong)制(zhi)(zhi)的(de)(de)發展(zhan)趨勢,運動(dong)(dong)控(kong)制(zhi)(zhi)系統(tong)中大多(duo)采用步(bu)進(jin)電(dian)(dian)機(ji)或全(quan)數(shu)(shu)字(zi)(zi)式交流伺(si)服(fu)電(dian)(dian)機(ji)作為
2020-12-18 -
摘 要 :功率相(xiang)同的(de)(de)低壓(ya)電機和高壓(ya)電機的(de)(de)區(qu)別:高壓(ya)電機的(de)(de)繞組線(xian)徑較(jiao)細、扎數較(jiao)多、流過的(de)(de)電流較(jiao)小;而低壓(ya)的(de)(de)則剛好相(xiang)反。 1、電機(英文:Electric machinery,俗稱(cheng)“馬達(da)”)是指(zhi)依據電磁感應定律實(shi)現電能轉換或傳遞的(de)(de)一種電磁裝置。在電路中用(yong)字母M(舊(jiu)標(biao)準用(yong)D)表示。
2020-12-18 -
摘 要 :我們知(zhi)道稱重傳(chuan)感(gan)器實際上(shang)是一種(zhong)將(jiang)質量信(xin)號(hao)轉變為(wei)可(ke)測量的電信(xin)號(hao)輸出的傳(chuan)感(gan)裝置。稱重傳(chuan)感(gan)器按(an)轉換方法分為(wei)8類之多,以(yi)電阻應(ying)變式使用最廣。對于(yu)稱重傳(chuan)感(gan)器來說,最重要的無非就(jiu)是其準確性是否可(ke)靠。所以(yi)一定(ding)不(bu)能夠出現(xian)角(jiao)(jiao)差(cha)現(xian)象(xiang)。那么什么是角(jiao)(jiao)差(cha)現(xian)象(xiang)現(xian)象(xiang)呢?面(mian)對這個問題和現(xian)象(xiang)的出現(xian)我們又應(ying)該怎樣去(qu)
2020-12-18 -
摘 要 :(一) 量(liang)身(shen)定制: 根據(ju)不同的(de)客(ke)戶(hu)要求(qiu)及(ji)計量(liang)的(de)實際情(qing)況,為客(ke)戶(hu)量(liang)身(shen)定做,依(yi)據(ju)客(ke)戶(hu)的(de)具體(ti)工作流(liu)程開(kai)(kai)發符合(he)客(ke)戶(hu)實際情(qing)況及(ji)要求(qiu)的(de)無人值守(shou)汽車衡智能(neng)(neng)稱(cheng)重(zhong)系(xi)統(tong)。 (二(er)) 稱(cheng)重(zhong)數(shu)據(ju)采(cai)集模塊: 無人值守(shou)智能(neng)(neng)稱(cheng)重(zhong)系(xi)統(tong)采(cai)用開(kai)(kai)放型接口協(xie)議(yi)設計,滿(man)足國內廠礦企(qi)業海(hai)關
2020-12-18