Ko kari MPP Electrical Ducting don Kable

Zabi na MPP Power Conduit: Maisu Farkon Kudin da Al'adun Yadda Ake Amfani Da Su

A lokacin da aka zabi MPP (Modified Polypropylene) power conduits, yana da kyau a duba kudin da dama masu muhimmanci kamar hanyoyin amfani da su, abubuwan da za a bukata, al'adun gina, tushen bayanai, da kuma ingantaccen birnin. Tare da bayanai mai zurfi:

1. Hanyoyin Amfani da Su da Misalai

Daraja ta Tsari da Nau'o'in Kabel

• Kabel mai tsari mai yawa (daga 10 kV zuwa): Zabi MPP pipes da kofin dukki mai yawa da kuma daraja mai yawa a kammala wani abu a kan iya haifar da shi saboda aikinsu ko fayansu a lokacin da kabel ya yi aiki.

• Kabel mai tsari mai hagu ko kabel mai wasar labaran: Yana iya amfani da MPP models da kofin dukki mai hagu da kuma mai karfi don kawo rasa.

• Kabel mai haske (misali, kabel mai haske ko kabel mai tsari mai yawa): Tambayi da MPP conduits da sauran darajonin mai haske (misali, Class B1) ko kuma daraja mai yawa a fayansu.

Al'adun Inganta

• Ingantaccen tsari mai yawa: A wurare da tsari mai yawa a ranar yamma ko kabilu mai fayansu, zabi MPP pipes da heat deflection temperature mai yawa (tsohon ≥120°C).

• Ingantaccen tsari mai ruwa ko tsarin da ke kafuwar ruwa: A wurare da jihohin mai ruwa, kasashen kimiyar, ko kabilu mai ruwa mai yawa, hakuri da MPP conduit yana da chemical resistance mai yawa don kawo rasa.

• Al'adun gina: A wurare da jihohin da ke da tsakiyar rubutu mai hagu ko jihohin da ke da sakamako, zabi MPP pipes da anti-settlement performance mai yawa, ko kuma zaka sai pipe diameter ko burial depth.

2. Abubuwan da Za Bu Barguta

Abubuwan da Musamman

• Ring Stiffness (SN Rating): Yana nuna damar pipe a kammala wani abu a kan iya haifar da pressure daga baya. Darajonin masu suna SN4 (4 kN/m²) da SN8 (8 kN/m²).

• SN8 ko daidai yana da kyau a wurare da shallow burial ko high-load areas (misali, under roads).

• SN4 yana da kyau a wurare da deeper burial ko low-load areas (misali, under greenbelts).

• Compressive Strength: Yana da kyau a kammala overburden soil pressure da kuma live surface loads (misali, vehicles, equipment). Ana bukata hanyoyin kula ko kuma reference to standards.

• Impact Resistance: A wurare da wurare da mechanical impact (misali, near construction sites), zabi MPP pipes da impact resistance mai yawa.

Abubuwan da Musamman a Fayanu

• Heat Deflection Temperature: Yana da kyau a kawo rasa maximum operating temperature of the cable (tsohon 90°C for conductor). Yana kammala deformation saboda thermal expansion.

• Coefficient of Linear Expansion: A wurare da wurare da large temperature variations (misali, high day-night differentials), account for thermal expansion/contraction by installing expansion joints or flexible couplings.

Abubuwan da Musamman a Tsarin Kirkiro

• Insulation Resistance: Hakuri da inner walls da suke da kyau don kawo rasa damage a kable a lokacin da ake amfani da su. Conduit itself must have good electrical insulation.

• Dielectric Strength: For high-voltage applications, verify that the MPP conduit’s dielectric strength meets operational requirements.

3. Al'adun Gina

Hanyoyin Amfani da Su

• Direct Burial: Use thick-walled, high-ring-stiffness MPP pipes. Consider burial depth (typically ≥0.7 m) and backfill material compaction (e.g., fine sand).

• Trenchless Installation (e.g., horizontal directional drilling): Choose flexible, high-tensile-strength MPP pipes to avoid breakage during pulling.

• Bridge or Tunnel Installation: Consider fire resistance (e.g., flame-retardant rating) and vibration resistance.

Hanyoyin Amfani da Su

• Hot-Melt Butt Welding: Suitable for large-diameter pipes requiring long-term sealing. High joint strength but requires professional equipment.

• Socket Joint (with seal ring): Easy to install; requires high-quality gaskets. Suitable for small-diameter pipes or emergency repairs.

• Electrofusion Joining: Ideal for complex terrain or confined spaces. Reliable but higher cost.

Kara da Bayanai da Rasa

• Fast Installation: For tight schedules, select easy-to-install MPP pipes (e.g., pre-assembled sections) and connection methods (e.g., socket joints).

• Lifecycle Cost: Evaluate material cost, installation, maintenance, and service life. Avoid low upfront cost leading to frequent replacements.

4. Standards and Regulations

Industry Standards

• Refer to standards such as Code for Design of Cables in Electrical Engineering (GB 50217) and Buried Polypropylene (PP) Structured Wall Pipe Systems (GB/T 32439) to ensure compliance with ring stiffness, compressive strength, and thermal performance.

• Confirm that the pipe meets national certifications (e.g., CCC, fire safety certification).

Project-Specific Requirements

• For special needs (e.g., UV resistance, anti-aging), select MPP pipes meeting relevant standards or request customized products from manufacturers.

5. Rasa da Ingantaccen Birnin

Bayanai Mai Tsauri

• Compare prices of MPP pipes with different diameters and SN ratings. Include installation costs (excavation, connections, backfill).

• Consider transportation costs, especially for large-diameter or long-distance deliveries.

Ingantaccen Birnin Mai Tsauri

• Choose corrosion-resistant, anti-aging MPP pipes to reduce inspection and replacement frequency.

• Confirm manufacturer warranty (e.g., 10+ years) to minimize long-term risks.

6. Misalai na Amfani da Su a Dunia

• Urban Grid Upgrade: For high-voltage cable undergrounding, SN8-grade MPP pipes are typically used, connected via hot-melt welding, with a burial depth of 1.2 m to withstand vehicle loads.

• Industrial Park Power Supply: In chemical or corrosive environments, use chemically resistant MPP pipes with increased wall thickness for enhanced compression resistance.

• Mountainous Power Transmission: In complex terrains, flexible MPP pipes are installed using trenchless technology to minimize environmental impact.