Antifreeze for subway pipelines and fire protection-TXLP heating cable electric heating technology

Published on:

2022-09-08 13:03

The non-freezing of pipelines in winter in the northern region has always been a serious problem for builders. The Shandong Huanning Electric Heating System, used in the Shijiazhuang Line 4 Station Water Pipe Freezing Protection Project, has solved this problem well and provided a good way to completely solve such problems.

The purpose of pipeline insulation and antifreeze is to compensate for the heat loss caused by the temperature difference inside and outside the pipeline shell. To achieve the purpose of protecting the pipeline from freezing and preserving heat, it is only necessary to provide the heat lost by the pipeline and maintain the heat balance of the fluid in the pipeline to keep the temperature of the device basically unchanged. The insulation system of the heating cable pipes is designed to ensure the heat loss of the pipeline, and the temperature of the supporting device is basically unchanged.

Antifreeze electric heating pipeline project, that is, low temperature heating cable heating system, heating system using electrical energy directly converted to thermal energy. The electric heating system of pipelines consists of three parts: a heating cable power system, a pipeline heating system with a non-freezing cable, and an intelligent control and alarm system for the pipeline's electric heating. The heating cable unit includes a thermostat, a temperature sensor, an air switch, and a decoupling AC limit overpass alarm. Chains such as the heating cable disconnect sensor, the working state display, the sound fault signal, and the transformer are used to monitor, ventilate and adjust the working state of the electric heating.

In working condition, the temperature sensor is placed on the heated pipeline, and its temperature can be measured at any time. The thermostat detects the set temperature, compares it to the temperature measured by the temperature sensor, isolates the transmission through the air switch in the control unit of the heating cable and the alarm over the AC limit, and shuts off the power supply in time with Jiatong to achieve the purpose of heating and antifreeze.

Based on a comprehensive review of the actual engineering situation and the efficiency of the pipeline system, Shijiazhuang Metro Line 4 selected our TXLP series two core heating cable. It has a long service life of heating material. Metal protective shell can eliminate magnetic field, harmless to human body, metal waterproof shell 100% prevents water leakage, etc. D., And also has a metal reinforced shell with high tensile and compression strength.

Using heating cables to provide heat, the success of pipe insulation and anti-freezing has the following advantages:

Safe, reliable and responsive.
Uniform temperature, economy and energy saving.
It is easy to install and does not require maintenance.
Environmental protection, intelligent alarm.

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