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Manufacturing process of oil-resistant cable for heading shield equipment

A manufacturing process and equipment technology, which is applied in the field of manufacturing process of oil-resistant cables for tunneling shield equipment, can solve the problems of ordinary shield machine cables with poor tensile strength, low temperature resistance and aging resistance, different application environments, mine Use the short service life of the cable to achieve the effects of improving bending flexibility, twisting and tearing resistance, good mechanical properties, and high cross-linking density

Inactive Publication Date: 2019-02-19
JIANGSU HENGTONG POWER CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cables used in excavation tunnels or outdoor heavy-duty mobile equipment are often used in harsh environmental conditions. The cables are frequently subjected to harsh environments such as excessive bending, stretching, torsion, and mechanical external force impacts for a long time; they are also used outdoors. Long-term exposure to natural conditions such as day and night cold, frost and snow, ultraviolet rays, ozone and other natural conditions, the performance declines relatively quickly and the service life is relatively short
[0003] Ordinary shield machine cables are generally designed and produced according to the design and production of rubber-sheathed soft cables for coal mines in China, and the service life of mining cables is relatively short, and the application and use environments are not exactly the same, so the tensile strength and low temperature resistance of ordinary shield machine cables , aging resistance and other properties are relatively poor

Method used

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  • Manufacturing process of oil-resistant cable for heading shield equipment
  • Manufacturing process of oil-resistant cable for heading shield equipment
  • Manufacturing process of oil-resistant cable for heading shield equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0048] Embodiments 1 to 4: A manufacturing process of an oil-resistant cable for tunneling shield equipment, the oil-resistant cable for tunneling shield equipment includes several power line conductors 1, several ground wire conductors 6, and an outer sheath 10, and the power line The outer circumference of the conductor 1 is co-extruded from the inside to the outside and covered with a semi-conductive conductor shielding layer 2, an insulating layer 3 and a semi-conductive insulating shielding layer 4, and the outer circumference of the semi-conductive insulating shielding layer 4 is covered with a mixed braiding layer 5 to form a power line Core, the outer periphery of the ground wire conductor 6 is extruded with a semi-conductive rubber layer 7 to form a ground wire core;

[0049]The power core and the ground core are twisted together to form a cable core, the gap between the power core and the ground core is filled with a semi-conductive rubber material filling layer 8, an...

Embodiment 1

[0054] The halogen-free flame retardant in embodiment 1 is melamine polyphosphate, the halogen-free flame retardant in embodiment 2 is piperazine phosphate, the halogen-free flame retardant in embodiment 3 is tricresyl phosphate, and the halogen-free flame retardant in embodiment 4 The flame retardant is a mixture obtained by mixing melamine polyphosphate and piperazine phosphate in a ratio of 1.5:1 by weight.

[0055] The maleic anhydride-grafted nitrile rubber is obtained through the following steps: respectively dissolving nitrile rubber, maleic anhydride and initiator in a solvent at a ratio of 1:1.5:0.1 by weight, and heating the nitrile rubber solution to 60-70 After ℃, slowly add the mixed solution of maleic anhydride and initiator dropwise, react at constant temperature for 8 to 12 hours, then add a precipitant, separate the maleic anhydride grafted nitrile rubber, wash with distilled water, and dry to obtain the maleic anhydride Grafted nitrile rubber.

[0056] The m...

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PUM

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Abstract

The invention discloses a manufacturing process of an oil-resistant cable for heading shield equipment. The oil-resistant cable for the heading shield equipment comprises a plurality of power line conductors, a plurality of ground line conductors and an outer sheath, a semi-conductive conductor shielding layer, an insulating layer and a semi-conductive insulation shielding layer are co-extruded onthe periphery of each power line conductor from inside to outside, the periphery of each semi-conductive insulation shielding layer is coated with a mixed braided layer to form a power line core, a semi-conductive rubber layer is extruded on the periphery of each ground line conductor to form a ground line core, the power line cores and the ground line cores are mutually stranded to form a cablecore, gaps among the power line cores and the ground line cores are filled with semi-conductive rubber material filling layers, a braided reinforced layer is arranged on the periphery of the cable core, and the outer sheath is extruded on the periphery of the braided reinforced layer and embedded into the gap between the cable core and the braided reinforced layer. The cable prepared by the manufacturing process has good mechanical performance and weather resistance, and has long service life under severe external conditions.

Description

technical field [0001] The invention relates to the technical field of cables for tunneling shield equipment, in particular to a manufacturing process of an oil-resistant cable for tunneling shield equipment. Background technique [0002] Cables used in excavation tunnels or outdoor heavy-duty mobile equipment are often used in harsh environmental conditions. The cables are frequently subjected to harsh environments such as excessive bending, stretching, torsion, and mechanical external force impacts for a long time; they are also used outdoors. Long-term erosion by natural conditions such as day and night, frost and snow, ultraviolet rays, ozone, etc., the performance declines relatively quickly and the service life is relatively short. [0003] Ordinary shield machine cables are generally designed and produced according to the design and production of rubber-sheathed soft cables for coal mines in China, and the service life of mining cables is relatively short, and the app...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B7/04H01B7/17H01B7/18H01B7/22H01B7/28C08L23/16C08L51/04C08L91/06C08K13/06C08K3/22C08K3/36C08K3/34
CPCH01B7/0045C08K2003/2241C08K2003/2296C08K2201/011C08L23/16C08L2203/202C08L2205/025C08L2205/035H01B7/041H01B7/17H01B7/183H01B7/1865H01B7/187H01B7/228H01B7/28C08L51/04C08L91/06C08K13/06C08K3/22C08K3/36C08K3/346
Inventor 廉果钱江伟江斌斌
Owner JIANGSU HENGTONG POWER CABLE