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柴油發電機組選購鑒別

發布時(shi)間(jian):2019/8/16 0:00:00

來源://cgzxw.cn/news783233.html

記者經過調查發現,目前國內知名的柴油發電機組品牌市場上幾乎都有假冒。怎樣才能鑒別真偽?為此記者專門走訪了柴油發電機組行業十強企業揚州正馳動力設備有限公司,采訪了正馳動力的高級工程師蔡總,拿到了柴油發電機組選購鑒別的一手資料,下面與大家分享。

一般柴油發電機組主要分為四大部分:柴油機、發電機、控制系統、附屬件。

1、柴油機

柴油(you)機(ji)是整個機(ji)組的(de)(de)動力輸出部分,占到柴油(you)發電機(ji)組成本的(de)(de)70%,是一些不良廠家喜歡(huan)弄虛做假(jia)的(de)(de)環節。

1.1 套牌假機

目前市場上知名的柴油機(ji)幾(ji)乎都有仿(fang)制廠(chang)(chang)家(jia),一些廠(chang)(chang)家(jia)使用(yong)這些外形一樣的仿(fang)制機(ji)冒充名,采用(yong)做假銘牌、打(da)真編號、印刷假出廠(chang)(chang)資料等手(shou)段套(tao)牌,以假亂真,達到(dao)大幅(fu)降低成本的目的。要分(fen)辨套(tao)牌機(ji),不(bu)是專業人員很難做到(dao)。

1.2 翻(fan)新舊機(ji)

各品牌都有翻(fan)新舊機,不(bu)是專業(ye)人員可(ke)能也很難分辨(bian)。

但是翻新機還(huan)有一些破(po)綻的,例如油漆(qi),特別是死角(jiao)油漆(qi),很難做到(dao)和原廠一致的。

1.3 以(yi)相(xiang)近(jin)廠名混淆視聽

這(zhe)些廠(chang)家屬于投機(ji)取巧的(de),不敢做(zuo)套牌、翻新,就(jiu)在廠(chang)名(ming)(ming)與柴油(you)機(ji)名(ming)(ming)上做(zuo)名(ming)(ming)堂,以相(xiang)近廠(chang)名(ming)(ming)來和柴油(you)機(ji)名(ming)(ming)混淆視聽。

例(li)如某些廠(chang)家(jia)用(yong)(yong)拼音(yin)或同(tong)音(yin)字乃至用(yong)(yong)相同(tong)字來(lai)注(zhu)冊自(zi)己的(de)品牌,例(li)如:某某康明(ming)斯(si)發(fa)電(dian)(dian)機(ji)組(zu)公(gong)司、KMS發(fa)電(dian)(dian)機(ji)組(zu)等等,實際(ji)上和康明(ming)斯(si)發(fa)動機(ji)沒有任(ren)何關聯,只是注(zhu)冊了某某發(fa)電(dian)(dian)機(ji)有限(xian)公(gong)司這(zhe)個名(ming)稱而已(yi),和“康明(ming)斯(si)”商標(biao)沒有一(yi)絲關系,這(zhe)些廠(chang)家(jia)外購回的(de)各種雜牌柴油機(ji)配置的(de)發(fa)電(dian)(dian)機(ji)組(zu)一(yi)律對外稱某某康明(ming)斯(si)發(fa)電(dian)(dian)機(ji)組(zu)。

1.4 小馬拉(la)大車

混淆KVA和KW的關系。把(ba)(ba)KVA當成KW夸(kua)大(da)功率(lv),賣給客戶。實際上KVA是(shi)(shi)視在功率(lv),KW是(shi)(shi)有效功率(lv),他們(men)之間的關系為1KVA=0.8KW。進口機組一(yi)般用KVA表(biao)示功率(lv)單(dan)位,而國(guo)內用電設備一(yi)般都用KW表(biao)示,所以核算功率(lv)時(shi)應(ying)把(ba)(ba)KVA打8折換算成KW。

不講長(chang)行(xing)(額定)功(gong)(gong)率(lv)和備(bei)用功(gong)(gong)率(lv)的關(guan)系(xi),僅說一(yi)個“功(gong)(gong)率(lv)”,把(ba)備(bei)用功(gong)(gong)率(lv)當作長(chang)行(xing)功(gong)(gong)率(lv)賣(mai)給客戶。實際上,后備(bei)功(gong)(gong)率(lv)=1.1x長(chang)行(xing)(額定)功(gong)(gong)率(lv)。而(er)且,后備(bei)功(gong)(gong)率(lv)只能在(zai)12小時(shi)連續運行(xing)中使用1小時(shi)。

2、發電機部(bu)分

發電(dian)(dian)機的(de)作用是將柴油機的(de)動力轉(zhuan)化為電(dian)(dian)能,直接關系到輸出電(dian)(dian)力的(de)質量與穩(wen)定。

2.1 定子線圈

定(ding)子(zi)線(xian)(xian)(xian)圈(quan)原先(xian)采(cai)用的均是(shi)全(quan)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)(xian),但隨著制(zhi)線(xian)(xian)(xian)技(ji)術的提高,出現了銅(tong)(tong)(tong)(tong)(tong)包(bao)(bao)鋁(lv)(lv)(lv)芯(xin)線(xian)(xian)(xian)。區別于鍍銅(tong)(tong)(tong)(tong)(tong)鋁(lv)(lv)(lv)線(xian)(xian)(xian),銅(tong)(tong)(tong)(tong)(tong)包(bao)(bao)鋁(lv)(lv)(lv)芯(xin)線(xian)(xian)(xian)是(shi)采(cai)用特殊模(mo)具在(zai)拉線(xian)(xian)(xian)成型時銅(tong)(tong)(tong)(tong)(tong)包(bao)(bao)鋁(lv)(lv)(lv),銅(tong)(tong)(tong)(tong)(tong)層比鍍銅(tong)(tong)(tong)(tong)(tong)厚的多。發電機定(ding)子(zi)線(xian)(xian)(xian)圈(quan)采(cai)用銅(tong)(tong)(tong)(tong)(tong)包(bao)(bao)鋁(lv)(lv)(lv)芯(xin)線(xian)(xian)(xian)在(zai)性能上并無太大區別,只是(shi)使用壽命比全(quan)銅(tong)(tong)(tong)(tong)(tong)線(xian)(xian)(xian)定(ding)子(zi)線(xian)(xian)(xian)圈(quan)短的多。

2.2勵磁方式

發(fa)電(dian)機(ji)勵(li)(li)(li)(li)磁(ci)方式分為(wei)相復勵(li)(li)(li)(li)式和無(wu)刷自勵(li)(li)(li)(li)磁(ci)式。無(wu)刷自勵(li)(li)(li)(li)磁(ci)式以勵(li)(li)(li)(li)磁(ci)穩定、維護簡(jian)單的優勢已成為(wei)主流,但(dan)仍有一些廠家出于成本考慮在300KW以下(xia)的發(fa)電(dian)機(ji)組內配置相復勵(li)(li)(li)(li)式的發(fa)電(dian)機(ji)。

3、控制系統

普通標準型(xing)機組需(xu)(xu)人工(gong)倒閘(zha),從停電(dian)到柴油發電(dian)機組啟動送電(dian),一(yi)般需(xu)(xu)要10至30分鐘。

柴油(you)發(fa)(fa)電(dian)(dian)機組自(zi)動(dong)(dong)(dong)(dong)化控(kong)制分為半(ban)自(zi)動(dong)(dong)(dong)(dong)和全(quan)自(zi)動(dong)(dong)(dong)(dong)無人值(zhi)守型。半(ban)自(zi)動(dong)(dong)(dong)(dong)為發(fa)(fa)電(dian)(dian)機組停(ting)電(dian)(dian)時(shi)自(zi)動(dong)(dong)(dong)(dong)啟動(dong)(dong)(dong)(dong)、來電(dian)(dian)時(shi)自(zi)動(dong)(dong)(dong)(dong)停(ting)機,省去了啟動(dong)(dong)(dong)(dong)停(ting)機的(de)(de)時(shi)間,但還(huan)是(shi)需要人工倒閘。正馳動(dong)(dong)(dong)(dong)力生產的(de)(de)全(quan)自(zi)動(dong)(dong)(dong)(dong)無人值(zhi)守控(kong)制屏加(jia)裝ATS雙電(dian)(dian)源(yuan)切換(huan)開關,直接自(zi)動(dong)(dong)(dong)(dong)檢測市(shi)電(dian)(dian)信號,自(zi)動(dong)(dong)(dong)(dong)切換(huan),同時(shi)控(kong)制發(fa)(fa)電(dian)(dian)機組自(zi)動(dong)(dong)(dong)(dong)啟動(dong)(dong)(dong)(dong)與(yu)停(ting)機,實(shi)現了全(quan)自(zi)動(dong)(dong)(dong)(dong)無人值(zhi)守運行,切換(huan)時(shi)間3-7秒可(ke)調。

醫院、軍隊、消防及其它須及時送(song)電場所(suo),須配全自動控制屏。

知名(ming)品牌控制器有如(ru)下品牌:

DSE:英(ying)國深海控制器;

科邁(mai):原裝進口捷克控制器(qi);

凱迅,香(xiang)港(gang)凱迅,廣州(zhou)生(sheng)產

眾(zhong)智,河南鄭(zheng)州(zhou)生產(chan)。

儀(yi)表(biao)、熔斷器(qi)正馳動(dong)力(li)均選用知名品(pin)牌,例如西門(men)子、康比利(li)、歐姆龍。

4、附屬件

正規柴(chai)(chai)油(you)發(fa)電(dian)機組(zu)附(fu)屬標配件由 散熱水箱、油(you)箱、底盤、蓄電(dian)池、電(dian)池導線、消音(yin)器(qi)(qi)、減震墊、空氣(qi)濾清器(qi)(qi)、柴(chai)(chai)油(you)濾清器(qi)(qi)、機油(you)濾清器(qi)(qi)、波紋管、連接法蘭(lan)、油(you)管組(zu)成。附(fu)屬件可(ke)作假部分也有(you)很多。


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