¿Puede la tubería de PE usar cable de alta tensión?

2025-08-19

En construcción e ingeniería municipal, las tuberías de PE se utilizan ampliamente en suministro de agua y drenaje, comunicación y otros campos debido a sus ventajas de resistencia a la corrosión, buena flexibilidad y construcción conveniente. Pero muchos usuarios preguntarán: ¿Se pueden utilizar tuberías de PE para la protección de roscado de cables de alta tensión? Como proveedor profesional de soluciones para tuberías, AD Pipeline lo analizará en detalle desde la perspectiva de las características de los materiales y las especificaciones de ingeniería. Análisis de viabilidad de las tuberías de

PE a través de cables de alta tensión Las tuberías de

PE (tuberías de polietileno) tienen buenas propiedades de aislamiento y su resistividad al volumen suele ser superior a 10 ¬ Ω · cm, que funciona bien en el tendido de cables de media y baja tensión. Sin embargo, para cables de alta tensión con una tensión nominal de 10kV y superior, se debe prestar atención a los siguientes factores:

1. Resistencia del aislamiento: La resistencia a la ruptura en frecuencia de potencia de la tubería de PE ordinaria es de aproximadamente 20-30 kV / mm, aunque cumple con los requisitos básicos de aislamiento, pero la descarga parcial generada por el funcionamiento a largo plazo del cable de alta tensión puede acelerar el envejecimiento del material

2. Estabilidad térmica: La temperatura de uso continuo de la tubería de PE es generalmente de -40 ℃ ~ 60 ℃. Cuando el cable de alta tensión está sobrecargado, el aumento de temperatura puede exceder su rango de tolerancia, lo que resulta en la deformación de la tubería

3. Propiedades mecánicas: La colocación de cables de alta tensión suele ir acompañada de una gran tracción. Es necesario asegurarse de que la tubería de PE tenga suficiente rigidez anular (se recomiendan grados SN8 y superiores)

Asesoramiento profesional para tuberías AD

Como participante estándar de la industria, se recomiendan tuberías AD en proyectos de protección de cables de alta tensión:

1. División de grado de voltaje: se pueden utilizar tuberías de alimentación de PE engrosadas (como tuberías de PE modificadas con AD MPP) para cables de menos de 10 kV, y se recomiendan bujes de potencia especiales

2 para 20 kV y más. Adaptación del entorno de colocación: se requiere una prueba del coeficiente de resistencia térmica del suelo durante la colocación directa de entierro para garantizar que la temperatura de trabajo de la tubería no supere el umbral de diseño

3. Requisitos de tratamiento especiales: En un entorno de campo eléctrico fuerte, se deben utilizar tuberías de PE modificadas con formulaciones especiales. Las tuberías de PE antiestáticas de las tuberías AD se pueden controlar a 10-10Ω · cm añadiendo masterbatch de negro de carbón, eliminando eficazmente la acumulación de electricidad estática

Precauciones de implementación del proyecto

1. Selección de tubería: debe estar de acuerdo con con el "Estándar de diseño de cable de ingeniería de energía eléctrica" GB50217, elija cumplir con el estándar GB / T 15558,1 de tubería de PE, AD Pipeline para proporcionar las especificaciones de tuberías de alimentación de 110-φ 200 mm a través de la prueba de tipo

2. Especificaciones de construcción:

- profundidad superior enterrada de tubería de no menos de 0,7 m, a través de la sección se debe instalar protección de carcasa

- cuando se usa tecnología sin zanjas, control de velocidad de tracción dentro de 1,5 m / min

- interfaz para hacer tratamiento de sellado, se recomienda utilizar AD especial máquina de acoplamiento de fusión en caliente para garantizar la calidad de soldadura

3. Post-mantenimiento: inspección regular de la resistencia a tierra de la tubería (debe ser inferior a 10Ω), encontró que las grietas o la decoloración de la tubería a tiempo para reemplazar

Conclusión 11727 AD Pipeline recuerda a los usuarios que se deben preferir tuberías especiales como tuberías de energía MPP o tuberías de energía CPVC en proyectos de alto voltaje de 110kV y más. Si tiene alguna pregunta sobre el plan de proyecto específico, puede comunicarse con el Centro de Servicio Técnico de AD Pipeline para obtener soluciones personalizadas para garantizar el funcionamiento seguro y estable del sistema de transmisión de energía.


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