煙囪彩繪 煙筒項目
穿好的導線須進行絕緣搖測,照明線路的絕緣電阻應大于 兆歐,動力線路的絕緣電阻應大于 兆歐。
電纜敷設
煙囪美化煙囪美化流程:煙囪彩繪 煙筒項目
電纜敷設前應先按照圖紙對電纜進行詳細檢查,規(guī)格型號截面電壓等級均要符合設計要求,外觀無扭曲壞損現(xiàn)象,并進行絕緣搖測或耐壓試驗,絕緣電阻應大于 兆歐。
電纜敷設的具體方式見附圖:煙囪粉刷煙囪工程。
電纜圖紙插圖
在橋架上敷設多根電纜時,應根據(jù)現(xiàn)場實際情況提前以表格或圖表的形式畫出電纜的排列,以減少電纜交叉。煙囪油漆煙囪項目
敷設電纜時,應按先大后小、先長后短的原則進行,排列在底部的先敷設。不同電壓等級的電纜應分層敷設,高壓電纜應敷設在上層。煙囪油漆煙囪項目
電纜沿橋架水平敷設時,應單層敷設,排列整齊,轉(zhuǎn)角處以大截面電纜允許彎曲半徑為準。
電纜在豎井內(nèi)敷設時,應采用電纜梯敷設,相同截面的電纜應自下而上敷設。電纜敷設后,用塑料扎帶與梯級橋架綁扎固定,綁扎距離應小于;當電線電纜敷設在天花板或地板上時,應采用金屬管、金屬線槽或金屬托盤敷設。
在下列情況下敷設電纜時,應采取防火和封堵措施:
電纜穿過不同的防火區(qū);
電纜沿豎井垂直敷設,穿過樓板;
電纜隧道、電纜溝、電纜間的隔墻;煙囪油漆煙囪項目
穿越建筑物外墻;
至建筑物入口,或至配電室控制室外的通道入口。
電纜引至電氣柜面板或控制面板的開口處。
標志應規(guī)格一致,防腐牢固,并標明電纜編號、規(guī)格、型號和電壓等級。
開關插座的安裝
煙囪美化煙囪美化流程圖:煙囪粉刷煙囪工程
妨礙安裝的模板腳手架必須拆除,墻體門窗等裝修工作完成后,才能插入煙囪進行美化。
開關應控制相線;插座接線見下圖:
燈具和開關的安裝應特別注意觀感質(zhì)量,標高位置應正確可靠,接線盒應清潔無雜物,表面應潔凈無變形,開關蓋板應緊貼建筑物表面。
明裝開關插座的底板與暗裝開關插座的面板并排安裝時,開關插座的高度差應小于面板垂直度差。
同一場合開關或插座的高度差小于。
防雷接地系統(tǒng)的安裝
煙囪美化煙囪美化流程圖:
自然基礎接地體的安裝
The main reinforcement in the pile foundation and pile cap of the building is used as grounding device. This chimney beautification adopts the common grounding type, and the lightning protection grounding electrical equipment protects the grounding. The functional grounding of the elevator control system, the computer function grounding, the equipotential connection and the grounding share the same grounding device. Using two welded Ф steel bars in the foundation outer ring lintel as the ring-shaped grounding connector, according to the requirements of drawing size and position, lap weld the four corner steel bars of each group of pile foundation, and then weld them with the main bar of the column (not less than the root, and below the outdoor ground, embed the grounding connection plate of the main bar, remove the coating, and mark the two main bars with colored paint to facilitate extraction and inspection, and make hidden records at the same time.
Installation of lightning protection downlead
The down lead must be disconnected with clips or test points at a distance of ~ from the ground. The diameter of bolts used for disconnecting clips shall not be less than, and galvanized washers and galvanized spring washers shall be added. When the main reinforcement is used as the down lead, find out all the main reinforcement positions according to the design requirements, mark them well, weld them in series with the reinforcement layer by layer to the top floor, and make hidden records after the chimney beautification.
Installation of lightning protection zone chimney painted chimney project
在屋頂女兒墻上設置環(huán)形避雷帶。避雷帶采用φ鍍鋅圓鋼。避雷帶安裝應平直牢固,不應有起伏和彎曲現(xiàn)象,距建筑物的距離應一致,每個檢查區(qū)段的平整度允許偏差為/,但總長度不應超過。彎曲半徑不得小于圓鋼直徑的兩倍,焊接跨接線長度不得小于圓鋼直徑的兩倍。雙面焊或焊接時損壞的鍍鋅層應刷銀粉或鍍鋅兩遍。
均壓環(huán)安裝煙囪油漆煙囪工程
每層與結構圈梁中的水平鋼筋(ф)焊接貫通,閉合壓扁,與柱鋼筋引下線焊接成一體。煙囪油漆煙囪項目