DTX-PLA002
DTX-PLA002
DTX-PLA002
DTX-PLA002
《聯系人;歐先生》
在系統的低壓電氣控制中,對于爐定設備還是采用傳統的控制方式,即配電室配電及控制,現場操作。而對于熱風爐、布袋除塵、框槽配料采用配電室配電,現場控制及操作。在這種方法下,原來的控制室一般設兩個柜子:系統電源柜和現場分項配電柜。而原來放在控制室的電磁控制系統根據功能組進行區分放在現場,實現現場電磁控制。
1:現場控制柜的設計
2:現場控制柜的安裝
2.1工程中電氣柜的安裝地點設計:
2.1.1布袋系統:該系統的控制柜包含10臺布袋箱體控制柜、1臺總管閥門控制柜、1臺出灰控制柜。
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現場控制柜采用雙層密封門結構,設計成操作區、電磁控制區、PLC控制區。其中操作區設計在柜門上,并采用防塵原件或是進行防塵防水處理?刂茀^設計在柜內,其又分割成兩個區:電磁控制區和PLC控制區。兩個區完全隔離,以保證PLC系統的電磁兼容要求以及電氣安全要求。同時為了維護、維修、檢修方便,柜內設低壓照明燈和檢修插座。
操作區:用于設計控制柜安放出的設備的手動操作元件(其他的設備控制仍然采用就地箱就近控制)
電磁控制區:完成子系統中電磁設備的一次配電和二次電磁控制。
PLC控制區:完成PLC系統模塊及供電、輸入輸出隔離。為減少電磁干擾,PLC供電點采用直流方式,同時進行隔離變壓器進行電磁隔離;對于輸入輸出采用繼電器隔離,對于模擬量根據需要進行隔離(因為現場一次元件直接進入現場控制柜,干擾小,因此可以酌情處離)。
現場控制柜的安裝應該考慮現場的空間要求因為現場空間以及設備的分布。在設計中首先考慮到現場設備的維修方便,而后才是電氣自身的要求。電氣控制首先在空間上應該讓位于機械操作的便捷,圍繞著機械操作便捷展開。因此在空間上應該選擇寬敞的地方。如果空間合適而不是和電氣的安全防護要求,則在電氣柜或其他方面采取措施。在空間的基礎上再考慮盡量接近設備最集中的地方。
(1)布袋箱體控制柜:設計安裝在布袋系統的第二層平臺。也就是中間灰斗平臺。同時布袋箱體卸灰系統設備的就地操作設計在柜體上。而布袋箱體的其他設備(支氣管到閥門、方散閥門)單獨設計現場就地箱控制并引入布袋箱體控制柜。
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