Kabulu mai Yadi
Takaitaccen
Cable mai shanu shi ne yaɗa cewa oil da kowace gaji ya fi kan bayanin cable ko kuma a ciki na pipe. Idan an yi aiki da zama-zama, oil a cikin cable yana fi kan gasarwa a cikin paper mai shanu. A tarihin, suna amfani da mineral oils, amma a baya, alkylates masu kyau kamar linear decyl benzene da branched nonyl benzene sun samu karfi. Wannan shine saboda gajinta gaji da suka da ita da kyau don abincin wuya mai shanu.
Ake amfani da cables mai shanu a hanyar tsari da aiki masu yawan lokaci ko kuma a wurare da ake iya amfani da aerial cables, kamar a cikin ruwan (misali, a cikin manyan ruwa), a cikin plants masu mafi ruwa, ko kuma a cikin power substations da ke da matsaloli.
Fadada Cables Mai Shanu
Tsarin da a cikin cable ya ba ake yanke ta a fada da tank mai shanu. Don in yanke tsari, channel mai shanu ana kan a matsayin lokacin da take koyar da tank mai shanu. Tsari mai shanu yana taimaka waɗanda ake gina gasarwa a cikin insulator. Amma a matsayin solid cables, cables mai shanu suna da fadada:
Sun zama da dielectric stress mai yawa.
Sunana da temperature mai yawa da capacity mai yawa ga current.
Quality mai shanu suna da kyau saboda solid cables.
Impregnation zai iya a yi har zuwa bayan sheathing process.
Gasarwa ba zai faru ba.
Sunana da cikin mai yawa da solid-filled cables saboda layer mai yawa mai shanu.
Abubuwa zai iya canzawa da oil leakage.
Abun Cables Mai Shanu
Cables mai shanu suna da abun uku:
Self-contained Circular Type Oil Cable
Self-contained Flat Type Cable
Pipeline Cable
Self-Contained Oil-filled Cable
Don self-contained oil-filled cables, area mai tsari mai tsakiyar conductor yana cikin 150-180 square millimeters da ake yi daga tin. Diameter mai ducts mai shanu a cikin wannan cables yana cikin 12 mm. Wannan abun cable yana amfani da shi a matsayin voltages masu 110-220 kV.
Fadada Self-contained Oil-filled Cables
Amma a matsayin oil-filled cables mafi, self-contained oil-filled cables suna da fadada:
Presence mai ducts mai shanu yana ba da size mai yawa ga conductor.
Installation yana da kyau.
Costs suna da kyau.
Ko da pumps, kawai tanks mai shanu ne ake buƙata don operation.
Saboda wannan fadada, self-contained oil-filled cables suna amfani sosai.
Flat Type Oil-filled Cable
A flat type oil-filled cables, three insulated cores suna haɗa a cikin horizontal side by side. Ba ake iya filter material, kawai space yana kan shanu da pressure. Flat sides of the lead sheath suna haɗa da hard metallic tapes ko bands and winding wires. Supporting bands suna haɗa da flutes don in yanke flexibility cable.
Idan cable yana kan load, temperature yake zama mai yawa, wanda yake zama oil ya zama mai yawa da yake zama flat sides of the sheath. Idan load yake zama, oil yake zama mai gaba, kuma resilient bands suna haɗa deflections. Wannan yana yanke gasarwa a cikin dielectric idan yake zama mai gaba.
Wannan cables suna da ducts mai shanu da suka da shanu da kowace. Oil yana kan pressure, da strength of 180 kV/cm. A cikin wannan abun cable, duk free space bayan cores yana da shi don flow shanu. Oil yana kan free spaces a cikin insulation, wanda yake yanke strength insulation.
Oil storage tanks suna haɗa a matsayin intervals masu daidai a cikin route cable don in yanke thermal expansion and contraction. Idan cable yana kan load, heat yake zama, wanda yake zama oil ya zama mai yawa daga cable zuwa tanks mai shanu. Kafin load yake zama, oil yake zama mai gaba a cikin cable. Wannan mechanism yana yanke gasarwa.
Pipe-Type Oil-filled Cables
Pipe-type oil-filled cable yana da three individual paper-insulated screen cores da ake haɗa a cikin steel pipe. Pipe yana kan insulation oil da ake yanke pressure ranging from 1.38×10⁶ to 1.725×10⁶ N/m². High-pressure oil yana da dual purpose: yana yanke gasarwa da kuma in yanke heat daga cable. Notably, a cikin wannan abun cable, conductor oil duct ba zai buƙata ba.
