冷却塔配套中频炉的系统故障可分为四大类，结合实际运行场景的FAQ如下：
一、热交换效能类故障
- 冷却水温过高：环境Temperature超标、循环水Flow Rate不足、盘管结垢堵塞，导致换热效率骤降，中频炉超温报警、被迫降Power运行。
- 喷淋系统堵塞：喷淋头被水垢、杂质堵住，无法均匀覆盖冷凝盘管，局部形成“干点”，加速钙镁离子沉积结垢，进一步恶化散热效果。
- 盘管腐蚀穿孔：长期未做水质处理，盘管被腐蚀出现渗漏，循环水混入杂质，直接威胁中频炉感应线圈的运行安全。
二、通风动力类故障
- Fan Air Volume不足：Fan叶片角度偏移、积灰损坏，或Motor轴承磨损，导致进风不畅，冷却塔散热能力大幅下降。
- Water Pump异常Noise/空转：Motor轴承磨损、进出口管道堵塞，或泵体内混入空气，造成水压不稳、水流中断，触发中频炉低水压联锁停机。
三、管路与结构类故障
- 塔体/管道漏水：冷却塔密封件老化失效、管道连接处垫片破损，或喷头堵塞引发局部水压过载，出现跑水漏液，系统储水量快速流失。
- 布水系统失效：布水管弯曲变形、腐蚀穿孔，布水转头卡滞不转动，冷却水分布不均，部分换热区域完全无法接触到喷淋水。
- 回水管频繁爆裂：水质杂质堵塞管路导致水压骤升、水压设置超出管材承压上限，或橡胶/金属软管长期老化磨损，引发爆管漏水。
四、水质与控制类故障
- 水质劣化结垢：长期未添加阻垢缓蚀药剂，循环水滋生藻类、悬浮物超标，不仅堵塞填料和管路，还会加速盘管、冷却通道的结垢，大幅降低换热效率。
- 控制系统失灵：Temperature/Flow Rate传感器漂移、电动调节阀卡涩，导致PID调节参数失准，无法自动调控FanSpeed和喷淋水量，水温持续失控。
- 填料堵塞失效：尘埃、水垢附着在填料表面，通风阻力增大，换热面积大幅缩减，冷却效率下降30%以上，还会增加Fan电耗。
Written by: Zhongliang Yiji Technical Department · 15 Years of Cooling Tower Selection Experience | Last Updated：2026-10-17
FAQ
How to choose between a closed-circuit and an open cooling tower?
For working conditions that demand clean water (such as vacuum furnaces, high-frequency furnaces, and injection machine hydraulic oil cooling), a closed-circuit tower is preferred: the cooled medium circulates inside the coil without direct contact with air, so it resists scaling, algae and particle contamination, with stable heat transfer and low maintenance. For ordinary recirculating water scenarios with tight water budgets or cost sensitivity, an open tower costs less upfront but requires supporting water treatment.
What are the footprint and connections of a 100 t closed-circuit cooling tower?
Taking a standard 100 m3/h closed-circuit tower as an example: overall dimensions are approximately 3500 x 1500 x 2800 mm with a footprint of about 5.25 m2; inlet and outlet piping is typically DN100, with a 5-10 C temperature drop under standard conditions. Refer to the product specification table for details; non-standard dimensions can be customised on site.
How do I size the pump and head for a cooling tower?
Pump flow is selected according to the rated circulating water volume of the cooling tower; head must account for pipeline friction losses, local resistance, equipment elevation difference and the necessary margin. Pressure-bearing equipment such as injection machines also requires reserve for the working pressure. It is recommended to hand the operating data (flow, temperature difference, installation height, pipe diameter and length) to technical staff for calculation, to avoid an undersized pump or excessive head that wastes energy.
What water treatment does a closed-circuit cooling tower need?
The outer circulating water of a closed-circuit tower still contacts air, so softened make-up water, periodic corrosion and scale inhibitor dosing, and control of the concentration ratio are recommended. The inner circulating medium should be softened water, antifreeze or pure water according to process requirements; outdoor installation in winter requires freeze protection (electric tracing or draining).
