昆明惠博廠家分享電纜橋架的布置

水泥廠電纜橋架的布置
電纜橋架的布置是水泥廠電氣設計中很重要的一部分，但經常會出現與現場情況不相符或布置不合理，電纜橋架路徑不通，橋架寬度不是太窄就是過寬，橋架層數不夠或過多，信號電纜與電力電纜間距不正確或布置不合理造成信號干擾，電纜橋架敷設路徑遭遇障礙物等等情況，不僅影響工期且造成浪費。這種現象往往是忽視電纜橋架的寬度計算及分層布置造成的。電纜橋架要分層布置，水泥廠的電纜一般有兩大類：控制電纜和動力電纜，控制電纜又可細分為電氣控制電纜和儀表弱電信號控制電纜，動力電纜又細分為低壓動力電纜和高壓動力電纜。這4種電纜按規范盡量分層布置，某種電纜一層放不下則增多層數，電纜橋架的排序按電壓等級從大到小、自下到上排列。電纜橋架多層置時，其層間距離一般為：控制電纜間不應小于0.20 m；電力電纜間不應小于0.30 m；弱電電纜與電力電纜間不應小于0.50 m；橋架上部距頂棚或其他障礙物不應小于0.30 m。某些只有很少設備的平面，電纜根數很少，為了節約成本，低壓動力電纜與控制電纜可以共用一個橋架，但是相互間宜設置隔板。

為了合理布置，節省橋架及其他附件的數量，電纜布置時應該注意以下事項:

（1）對于水泥磨磨房車間，磨房內有自動噴水系統，油站也有進水口，這樣磨房地面就有水的存在。考慮到長期的電纜維護方便，我們最好
選用電纜橋架敷設方式。

（2）橋架布置在車間內應盡量借助柱子、墻壁、欄桿等。在兩車間之間或是空地上，橋架的跨距超過6 m的情況下，就要建立柱支撐。

（3）橋架從電氣室引到其他工藝平面，要注意上引的位置，上引的位置不要靠近在吊物孔，如果某平面的梁下有電動葫蘆，最好不要在電動
葫蘆的運動軌跡范圍內，上引的橋架盡量按直線豎直上行。

（4）橋架在最頂層平面穿過預留孔到頂層平面的設備，為了防止雨雪天雨水沿預留孔灌到橋架電纜內，預留孔的堵塞工作一定要做好。在實
際設計中，電纜橋架的布置應與土建，工藝及相關專業密切配合，以確定最佳的布置，盡量做到選型準確、布局合理、材料節省且美觀，便于安裝維護。

Less, in order to save cost, low voltage power cable and control cable can share a bridge, but separate partitions should be set up for each other.

In order to avoid the electromagnetic interference of the power loop, the weak electric signal cable and power cable should be far away from the power cable. Some signal cables are equipped with shielding layer, and the ground processing is done as far as possible.

3 points of attention to the arrangement of cable bridge

In order to arrange rationally and save the number of bridge and other accessories, we should pay attention to the following items in cable layout.

(1) for the cement mill workshop, there is an automatic sprinkler system in the mill, and the oil station also has an inlet, so that there is water on the ground floor. Considering the convenience of long term cable maintenance, we'd better choose the way of cable bridge installation.

(2) bridge layout should be done with columns, walls, rails and so on in the workshop. In the two workshop or between the open space and the span of the bridge is more than 6 m, the column support shall be established.

(3) the bridge frame from the electric room to other craft plane, should pay attention to the position of the lead, the position of the top should not be close to the hole in the crane, if there is an electric hoist under the beam of a plane, it is better not in the range of the motion of the electric hoist, the overhead bridge is as straight as straight up in line.

(4) a device that passes through the reserved hole to the top plane in the top level plane. In order to prevent the rain and snow water from filling the bridge cable along the reserved hole, the plugging work of the reserved hole must be done well.

In the actual design, the layout of the cable bridge should be closely coordinated with the civil construction, technology and related specialties to determine the best arrangement, as far as possible, as far as possible, the selection is accurate, the layout is reasonable, the material is saved and beautiful, so it is easy to install and maintain.