当电缆在运行中因过载而 “发烧”，不仅威胁电力传输，更可能引发火灾隐患。作为电缆的 “散热盔甲”，网格桥架在应对这一问题时，若能通过科学优化，将散热效率提升 70%，就能有效为电缆 “退烧”。从根源解决过载问题，到挖掘桥架散热潜力，每个环节都藏着突破的关键。

　　When cables become overheated due to overload during operation, it not only threatens the safety of power transmission but may also pose a fire hazard. As the "heat dissipation armor" of cables, grid trays can effectively reduce cable overheating by increasing heat dissipation efficiency by 70% through scientific optimization when addressing this issue. From solving the overload problem at the root to tapping into the heat dissipation potential of the bridge, there are key breakthroughs hidden in every link.

　　一、追根溯源：找准电缆过载的 “病根”

　　1、 Tracing back to the source: Identifying the root cause of cable overload

　　电缆过载发热，首要任务是排查根源。先检查用电设备是否超出电缆额定承载功率，例如老旧线路接入过多大功率电器，或新设备安装未匹配合适规格电缆。再查看电缆是否存在短路、接触不良等故障，这些问题会导致局部电流异常增大，产生大量热量。此外，电缆长期高负荷运行，绝缘层老化也会加剧发热情况。只有精准定位过载原因，才能对症下药 —— 若是功率超标，需及时更换更大规格的电缆；若因故障导致，必须立即断电检修，修复后再恢复供电。

　　The primary task for cable overload heating is to investigate the root cause. First, check if the electrical equipment exceeds the rated carrying capacity of the cable, such as connecting too many high-power electrical appliances to old lines, or installing new equipment without matching suitable cable specifications. Re check if there are any faults such as short circuits or poor contacts in the cable, which can cause abnormal increase in local current and generate a large amount of heat. In addition, long-term high load operation of cables and aging of insulation layers can also exacerbate heating conditions. Only by accurately identifying the cause of overload can we prescribe the right medicine - if the power exceeds the standard, it is necessary to replace the cable with a larger specification in a timely manner; If it is caused by a malfunction, the power must be immediately cut off for maintenance, and the power supply must be restored after repair.

　　二、桥架改造：释放网格桥架的 “散热潜能”

　　2、 Bridge renovation: unleashing the "heat dissipation potential" of grid bridge structures

　　网格桥架的开放式结构本就具备天然散热优势，想要进一步提升效率，可从布局与设计着手。优化桥架安装位置，将其设置在通风良好的区域，避免靠近热源或封闭角落。同时调整桥架走向，减少不必要的弯曲与缠绕，确保空气能在桥架内自由流通。对于多层桥架，层间需保持少 20 厘米的间距，防止下层电缆产生的热量向上堆积。还可在桥架底部加装导流板，引导冷空气从底部进入，热空气从顶部排出，形成定向对流通道，加速热量散发。通过这些改造，网格桥架的散热效率将获得显著提升。

　　The open structure of grid bridge already has natural heat dissipation advantages. To further improve efficiency, we can start with layout and design. Firstly, optimize the installation position of the bridge and place it in a well ventilated area, avoiding proximity to heat sources or enclosed corners. At the same time, adjust the direction of the bridge to reduce unnecessary bending and entanglement, ensuring that air can freely circulate inside the bridge. For multi-layer cable trays, a minimum distance of 20 centimeters should be maintained between layers to prevent the heat generated by the lower cables from accumulating upwards. A guide plate can also be installed at the bottom of the bridge to guide cold air to enter from the bottom and hot air to be discharged from the top, forming a directional convection channel to accelerate heat dissipation. Through these modifications, the heat dissipation efficiency of the grid bridge will be significantly improved.

　　三、辅助散热：为电缆 “降温” 加把力

　　3、 Auxiliary heat dissipation: adding strength to the "cooling" of cables

　　除了桥架自身优化，搭配辅助散热措施能事半功倍。在电缆表面涂刷散热涂料，这种特殊涂料可增大电缆表面的散热面积，加速热量传导。在桥架周围安装轴流风扇，强制空气流动，带走电缆散发的热量。对于关键线路或发热严重的区域，可采用热管散热技术，将电缆的热量快速传导远处，降低局部温度。此外，在电缆密集处填充相变材料，当温度升高时，相变材料吸收热量发生物态变化，从而稳定环境温度，缓解电缆发热问题。

　　In addition to optimizing the bridge structure itself, using auxiliary heat dissipation measures can achieve twice the result with half the effort. Brushing heat dissipation coating on the surface of the cable can increase the heat dissipation area of the cable surface and accelerate heat conduction. Install axial fans around the cable tray to force air flow and remove the heat emitted by the cables. For critical circuits or areas with severe heat generation, heat pipe heat dissipation technology can be used to quickly transfer the heat of cables to distant locations and reduce local temperatures. In addition, phase change materials are filled in densely populated areas of cables. When the temperature rises, the phase change materials absorb heat and undergo a change in state, thereby stabilizing the ambient temperature and alleviating the problem of cable heating.

　　四、智能监测：实时掌握电缆 “健康状态”

　　4、 Intelligent monitoring: Real time monitoring of the "health status" of cables

　　引入智能监测系统，为电缆运行装上 “千里眼”。在电缆关键节点安装温度传感器，实时监测电缆表面温度，一旦超过预设阈值，立即发出警报。利用红外热成像技术，定期扫描电缆与桥架，直观呈现温度分布，快速定位发热点。将监测数据接入智能管理平台，通过数据分析预测电缆过载风险，提前采取措施。例如，根据历史温度数据与用电负荷变化，动态调整用电分配，避免电缆长时间处于高负荷状态。

　　Introduce an intelligent monitoring system and install a "thousand mile eye" for the safe operation of cables. Install temperature sensors at key nodes of the cable to monitor the surface temperature of the cable in real-time. Once the preset threshold is exceeded, an alarm will be immediately triggered. Using infrared thermal imaging technology, regularly scanning cables and cable trays to visually present temperature distribution and quickly locate hotspots. Connect monitoring data to the intelligent management platform, predict cable overload risks through data analysis, and take measures in advance. For example, based on historical temperature data and changes in electricity load, dynamically adjust electricity allocation to avoid cables being in a high load state for a long time.

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