Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fire-resistant-1100 DEG C mineral low-voltage cable and preparation method thereof

A low-voltage cable and mineral technology, applied in the field of mineral cables and their preparation, can solve the problems of easy moisture absorption of MgOH2, melting of copper sheath, and easy failure, and achieve long preparation time, reduce smoke, and delay burning. Effect

Inactive Publication Date: 2021-02-23
JIANGSU HENGTONG POWER CABLE
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The petrochemical fire protection system requires the cable to withstand a temperature of 1093 degrees and keep the line intact for 30 minutes. The performance of the fireproof cables currently on the market cannot meet the petrochemical requirements, because the melting point of copper is 1083 degrees, so the copper sheath has melted at this temperature, and at the same time MgOH2 It is also easy to absorb moisture, and it is prone to failure at the joints, which cannot meet their needs
At present, customers use mineral insulated cables such as magnesium oxide, and then use secondary protection methods for fire prevention treatment, such as wrapping with fireproof isolation cloth, so the overall cost of installation and laying is very high, and the space for laying is greatly limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fire-resistant-1100 DEG C mineral low-voltage cable and preparation method thereof
  • Fire-resistant-1100 DEG C mineral low-voltage cable and preparation method thereof
  • Fire-resistant-1100 DEG C mineral low-voltage cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0044] Embodiments 1-3: A fire-resistant 1100°C mineral low-voltage cable, including multiple conductors 1 distributed in a ring shape, and each conductor 1 is provided with a fire-resistant wrapping tape 2 and an insulating layer 3 in turn. A first wrapping tape 5 is provided on the outside of the multiple conductors 1, and an alkali-free glass fiber filling rope 4 is filled between the first wrapping tape 5 and the plurality of conductors 1, and spacers are arranged on the outside of the first wrapping tape 5 in turn Oxygen layer 6, refractory layer 7 and second tape 8, the first tape 5 and the second tape 8 are alkali-free glass fiber tapes, and an outer sheath 9 is provided on the outside of the second tape 8;

[0045] The preparation method of the oxygen barrier layer comprises the following steps:

[0046] S1. Put 40~80 parts of ethylene-vinyl acetate copolymer resin, 30~50 parts of polyolefin elastomer, 15~30 parts of polyester plasticizer and 2~4 parts of maleic anhydr...

Embodiment 2

[0054] The content of vinyl acetate in the ethylene-vinyl acetate copolymer resin in Example 2 is 48%, and the addition ratio of 2-phenylbenzimidazole-5-sulfonic acid and octyl p-methoxycinnamate is 2:1, The ratio of tetrabutyl titanate to triallyl isocyanurate is 1:1, the ratio of aluminum hydroxide, pentaerythritol, and red phosphorus is 4:2:1, and the silane coupling agent is methyltrimethoxysilane ;

Embodiment 3

[0055] The content of vinyl acetate in the ethylene-vinyl acetate copolymer resin in Example 3 is 50%, and the addition ratio of 2-phenylbenzimidazole-5-sulfonic acid to octyl p-methoxycinnamate is 2:1. The addition ratio of tetrabutyl ester to triallyl isocyanurate is 2:1, the addition ratio of aluminum hydroxide, pentaerythritol, and red phosphorus is 4:2:1, and the silane coupling agent is phenyltrimethoxysilane.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a fire-resistant-1100 DEG C mineral low-voltage cable and a preparation method thereof; the fire-resistant-1100 DEG C mineral low-voltage cable comprises a plurality of conductors, the plurality of conductors are annularly distributed, the outer side of each conductor is sequentially provided with a fire-resistant wrapping tape and an insulating layer, the outer sides of the plurality of conductors are provided with a first wrapping tape, and alkali-free glass fiber filling ropes are filled between the first wrapping tape and the conductors. An oxygen barrier layer, afireproof layer and a second wrapping tape are sequentially arranged on the outer side of the first wrapping tape, the first wrapping tape and the second wrapping tape are alkali-free glass fiber tapes, and an outer sheath is arranged on the outer side of the second wrapping tape. The cable is excellent in fireproof effect, slow in combustion and low in release, and heat dissipation of the cable and improvement of the current-carrying capacity are facilitated.

Description

technical field [0001] The invention relates to a cable, in particular to a 0.61kV and below refractory 1100°C mineral cable and a preparation method thereof. Background technique [0002] With the increasing scale of petrochemical plants and the higher level of automation, the safety of cables used in petrochemical plants has also attracted more and more attention from relevant parties. In petrochemical installations, cables are used in a large amount, with many specifications and varieties, and are widely distributed and irradiated. In terms of fire prevention and control, cables have the characteristics of universality, flammability, and series ductility. Once a fire occurs, the consequences will be disastrous. According to the investigation and statistics of the causes of fires in domestic petrochemical installations in recent years, 60% to 70% of fires are caused by electrical equipment accidents, and most electrical equipment insulation problems occur on cables. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/29H01B7/18H01B3/44C08L23/08C08L23/00C08L67/00C08L51/06C08K13/06C08K9/06C08K3/22C08K5/053C08K3/02C08K5/42C08K5/10C08K5/3492C08K5/101
CPCC08K2003/026C08K2003/2227C08L23/00C08L23/0853C08L2201/02C08L2203/202C08L2205/035H01B3/441H01B7/1875H01B7/29H01B7/295C08L67/00C08L51/06C08K13/06C08K9/06C08K3/22C08K5/053C08K3/02C08K5/42C08K5/10C08K5/34924C08K5/101C08K5/3492C08L23/08H01B3/44H01B7/18
Inventor 李永志陈骁琦刘海峰
Owner JIANGSU HENGTONG POWER CABLE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products