Underground cable protection pipe

A technology for underground cables and protective tubes, applied in the field of power cables, can solve problems such as poor flame retardancy and mechanical properties that need to be improved, and achieve the effect of prolonging the service life

Pending Publication Date: 2021-01-29
国网河南省电力公司邓州市供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two protective tubes can protect the cables to a certain extent, but the flame retardancy is poor, and the mechanical properties need to be improved

Method used

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  • Underground cable protection pipe

Examples

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Effect test

Embodiment 1

[0023] An underground cable protection tube includes a metal mesh and rubber layers wrapped on both sides of the metal mesh.

[0024] The rubber layer is made of the following raw materials in parts by weight: 25 parts of ethylene-propylene rubber, 12 parts of styrene-butadiene rubber, 4 parts of hydrogenated rosin glyceride, 1.5 parts of white carbon black, 0.8 parts of flame retardant, and 5.5 parts of attapulgite , 80 parts of acetone, 1.8 parts of filler. The flame retardant is triphenyl phosphate. The filler is zinc oxide. The particle size of the attapulgite is 200 mesh.

Embodiment 2

[0026] An underground cable protection tube includes a metal mesh and rubber layers wrapped on both sides of the metal mesh.

[0027] The rubber layer is made of the following raw materials in parts by weight: 27 parts of ethylene-propylene rubber, 15 parts of styrene-butadiene rubber, 6 parts of hydrogenated rosin glyceride, 1.8 parts of white carbon black, 1 part of flame retardant, and 6 parts of attapulgite , 85 parts of acetone, 2 parts of filler.

[0028] The flame retardant is ammonium polyphosphate.

[0029] The filler is a mixture of silicon nitride, nanometer titanium dioxide and zinc oxide, and the weight ratio of silicon nitride: nanometer titanium dioxide: zinc oxide is 1:0.3:2. The particle size of the attapulgite is 200 mesh.

Embodiment 3

[0031] An underground cable protection tube includes a metal mesh and rubber layers wrapped on both sides of the metal mesh.

[0032] The rubber layer is made of the following raw materials in parts by weight: 28 parts of ethylene-propylene rubber, 16 parts of styrene-butadiene rubber, 7 parts of hydrogenated rosin glyceride, 2.2 parts of white carbon black, 1.2 parts of flame retardant, and 7 parts of attapulgite , 90 parts of acetone, 2.2 parts of filler.

[0033] The flame retardant is triphenyl phosphate or ammonium polyphosphate.

[0034] The filler is a mixture of silicon nitride, nanometer titanium dioxide and zinc oxide, and the weight ratio of silicon nitride: nanometer titanium dioxide: zinc oxide is 1:0.4:2.5. The particle size of the attapulgite is 300 mesh.

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Abstract

The invention discloses an underground cable protection pipe, and belongs to the technical field of the power cable. The underground cable protection pipe comprises a metal net and rubber layers wrapping two sides of the metal net. The rubber layer is prepared from the following raw materials in parts by weight: 25-30 parts of ethylene propylene rubber, 12-18 parts of butadiene styrene rubber, 4-8parts of hydrogenated rosin glyceride, 1.5-2.5 parts of white carbon black, 0.8-1.5 parts of a flame retardant, 5.5-8 parts of attapulgite, 80-100 parts of acetone and 1.8-2.5 parts of filler. The rubber material shows good comprehensive properties: the tensile strength is 21.7-24MPa, the elongation is 655%-739%, the impact strength is 354-362 J / m < 3 >, the oxygen index is 38-42, the cable can be well protected, and the service life of the cable is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to an underground cable protection tube. Background technique [0002] With the rapid development of urbanization, life is becoming more and more intelligent, so more electricity needs to be consumed. In order to avoid the huge impact of power outages on life, many cables have also moved from the original overhead to more and more underground. Due to the increase of load, self-aging, and some construction units' weak awareness of the protection of power facilities during the construction process, the brutal construction leads to frequent failures of the cable and the normal power supply and other factors. The hidden danger of external damage has always threatened the safe operation of the cable line. . The existing cable protection tubes have poor mechanical properties and corrosion resistance. They are easily corroded or damaged if they are buried deep underground for a long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L9/06C08L93/04C08L97/02C08K13/04C08K7/14C08K7/26C08K3/34C08K3/22
CPCC08L23/16C08K2201/005C08K2201/011C08K2003/2241C08K2003/2296C08L2203/202C08L2201/08C08L2201/14C08L9/06C08L93/04C08L97/02C08K13/04C08K7/14C08K7/26C08K3/34C08K3/22
Inventor 翁倩王喜明
Owner 国网河南省电力公司邓州市供电公司
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