Constant voltage oil sealing method for thermal shrinkage cable head

A cable head, heat shrinking technology, applied in the direction of air-filled/oil-filled cable accessories, etc., to eliminate oil leakage, improve safety factor, and increase pressure

Inactive Publication Date: 2012-11-14
CAIHONG COLOUR KINESCOPE GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide a constant pressure oil sealing method for heat-shrinkable cable head, which can completely eliminate the phenomenon of oil leakage of the cable head caused by the shrinkage performance of the heat-shrinkable tube, and effectively improve the The safety factor of grid operation

Method used

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  • Constant voltage oil sealing method for thermal shrinkage cable head
  • Constant voltage oil sealing method for thermal shrinkage cable head
  • Constant voltage oil sealing method for thermal shrinkage cable head

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Embodiment Construction

[0010] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0011] Such as figure 1 , figure 2 with image 3 As shown, the following is a detailed description of the heat shrinkable manufacturing process of the oil-impregnated paper cable end:

[0012] Step 1: Strip the outer sheath and weld the ground wire: fix the cable vertically, measure 760mm from the end, then peel off the outer sheath of the quilt, measure up the 50mm steel armor, lashing wire, and the rest from the fracture of the outer sheath Strip off the steel armor, tear off the inner protective layer layer by layer (if necessary, use a blowtorch to evenly bake), clean the surface of the lead bag about 200mm upwards from the armour fracture, and then roughen the surface of the lead bag by 120~200mm from the armour fracture. Weld the ground wire to the armored place (according to the welding standard), keep the 120mm lead package upward from the armo...

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Abstract

Disclosed is a constant voltage oil sealing method for a thermal shrinkage cable head. During cable head manufacturing, a plurality of strands of reinforcing cotton ropes with 3mm diameters are tightly wound for 10-15 rounds around a gluing gauze belt at the position of each sealing port, closing positions of the cotton ropes are firmly bound, and then a next process is performed. According to the constant voltage oil sealing method for the thermal shrinkage cable head, a pressure of the sealing port can be effectively increased and can be kept for a long time only if the closing positions of the cotton ropes are firmly bound, an elasticity pressure of a thermal shrinkage pipe can be converted to a constancy pressure, the phenomenon that oil of the cable head is leaked out due to the reduction of shrinkage performances of the thermal shrinkage pipe is thoroughly eliminated, the safety coefficient for power grid operating is effectively improved, and safe and stable power supplying capabilities of power grids are improved.

Description

Technical field [0001] The invention relates to an oil sealing method for a heat shrinkable cable head, in particular to a constant pressure oil sealing method for a heat shrinkable cable head. Background technique [0002] The heat-shrinkable cable head materials have been widely used in power supply systems because of their stable electrical performance, no filling agent, convenient operation, short construction period, reasonable structure, and convenient disassembly and assembly tests. However, the oil-immersed power cable heads made of heat-shrinkable materials at present, after a period of operation, often have oil leakage of the cable heads, which causes moisture intrusion, reduces the cable insulation, and the cable heads are also prone to breakdown, which seriously affects the power grid. Safe operation. Summary of the invention [0003] In order to solve the above-mentioned problems in the prior art, the purpose of the present invention is to provide a method for consta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/23
Inventor 陈永泰王小栋肖新娜
Owner CAIHONG COLOUR KINESCOPE GENERAL FACTORY
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