Electric heating cable and buried pipe of PetroChina

CNPC's buried pipelines play a key role in energy transportation, but they face many challenges. As an effective solution, electric heating cables are gradually playing an important role in the field of CNPC's buried pipelines. Let's take a deeper look at how electric heating cables can cope with these challenges and protect oil transportation.

Challenges faced by CNPC buried pipelines

CNPC buried pipelines need to transport various petroleum products and encounter many problems under different climatic conditions. In cold regions, low temperatures can easily cause the oil in the pipeline to solidify, affecting the transportation efficiency and even causing blockages. In addition, because the soil is moist and corrosive, buried pipelines are susceptible to corrosion, reducing their service life and safety.

Working principle of electric heating tape

Electric heating tape is a heating device that converts electrical energy into thermal energy. It is usually composed of a conductive core wire, an insulating layer, a metal shielding layer and an outer sheath. When current passes through the conductive core wire, heat is generated due to resistance. This heat is transferred to the outer sheath through the insulating layer and the metal shielding layer, and then to the object to be heated.

Application of electric heating tape in buried pipes of CNPC

1. Preventing oil from solidifying

In cold areas, electric heating tape can be installed on the outer wall of CNPC buried pipelines to prevent oil from solidifying by heating the pipelines and ensure normal transportation. Electric heating tape can be customized according to the length and diameter of the pipeline so that the entire pipeline is heated evenly.

2. Anti-corrosion protection

Electric heating tape can increase the temperature of the pipeline and reduce the corrosion rate of the soil on the pipeline. It can also be combined with anti-corrosion coatings to further improve the anti-corrosion performance of the pipeline and extend its service life.

3. Pipeline monitoring

Electric heating tape can be combined with temperature sensors and monitoring systems to achieve real-time monitoring of pipeline temperature. Once the temperature is abnormal, the monitoring system can issue an alarm in time to remind the staff to handle it and ensure the safe operation of the pipeline.

Precautions for using electric heating cables

1. Choose the right electric heating cables

According to the specific conditions of the buried pipelines of PetroChina, such as length, diameter, and temperature requirements of the conveying medium, choose the right type and specification of electric heating cables. At the same time, choose products with reliable quality and stable performance to ensure long-term stable operation.

2. Correctly install the electric heating cables

It should be installed by professionals and strictly follow the installation instructions to ensure that the electric heating cables fit tightly with the pipeline to avoid gaps and heat loss. Also pay attention to the wiring method and grounding protection to ensure safe and reliable installation.

3. Regular maintenance and inspection

During use, it is necessary to regularly check whether the electric heating cable is damaged, whether the wiring is loose, whether the temperature is normal, etc. If problems are found, they should be dealt with in time to ensure normal operation.

Conclusion

In short, electric heating cables provide a reliable solution for CNPC buried pipelines. By correctly selecting, installing and maintaining electric heating cables, it can effectively prevent oil solidification, provide anti-corrosion protection and realize pipeline monitoring. It is believed that in the future, electric heating cables will play a greater role in the field of CNPC buried pipelines.