CN207611623U

CN207611623U - A kind of mineral insulation metal shield monitoring type coal mine fireproof cable

Info

Publication number: CN207611623U
Application number: CN201721682654.2U
Authority: CN
Inventors: 杨凤霞; 薛洪亮; 周冬花; 宋青林
Original assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Current assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Priority date: 2017-12-06
Filing date: 2017-12-06
Publication date: 2018-07-13
Anticipated expiration: 2027-12-06

Abstract

The utility model discloses a kind of mineral insulation metal shield monitoring type coal mine fireproof cable, including cable core, the cable core is twisted by two mineral insulation cores and a monitoring core；In the gap filled glass fiber silk of cable core, inorganic thermal insulation fireprotection layer is extruded outside cable core, third mineral insulation is extruded outside inorganic thermal insulation fireprotection layer, it is externally provided with metallic conduction pipe in third mineral insulation, wrapped non-woven fabrics after coating coating fireprotection layer, is externally provided with aluminium foil tinfoil, the wrapped two-sided synthetic mica tape outside aluminium foil tinfoil in non-woven fabrics outside metallic conduction pipe, oversheath finally is extruded in the outermost layer of cable, and fire-proof mud is coated in the outer surface of oversheath.The utility model has good conductive property, outside mechanical and physical performance, fire resistance, and also there is good noninflammability, this cable can not only ensure that the fire-fighting in fire life is powered in case of fire, will not also prolong combustion, not generate toxic smog.

Description

A kind of mineral insulation metal shield monitoring type coal mine fireproof cable

Technical field

The utility model is related to electric wire fields, and in particular to a kind of mineral insulation aluminium sheath flexible fire-proof cable.

Background technology

Fire refers to the disaster caused by out of control burning over time and space.In various disasters, fire is Most frequently, one of the major casualty of public security and social development is most generally threatened.

Currently, the connection of the power supply of underground moving transformer and similar devices uses coal mine with metal shield monitoring type rubber substantially Sleeve flexible cable, such shielded layer for thering is conductive material to make outside every phase core insulation, the shielded layer again with ground core wire It is tightly coupled, therefore, when cable core insulation is damaged by wound, conductive core wire necessarily first contacts shielded layer, then By this conductive shielded layer, core wire make leakage relay protection act, voluntarily cut off the power.Thus shielded cable just plays The effect cut off the power in advance.The alternate generation short circuit accident of cable is avoided, personal electric shock can be also prevented, is reduced because electric spark draws The danger of the coal dust and gas explosion that rise.In addition to meeting shielded cable structural requirement, cable there are one monitor layer, monitoring line by Tin metal silk forms, and effect is can to find the security risk of cable and electrical equipment at runtime in time, timely will Hidden danger is fed back in control room on well, and the safety in utilization of cable is increased.

And fireproof cable currently on the market can be divided into two kinds of rigidity and flexibility by architectural characteristic.Since rigid mineral are exhausted Edge cable rigidity mineral insulated cable（Mineral Insulated Cable）Abbreviation MI cables are in reliability, production and laying The defect of aspect, gradually quits listing in European and American developed countries, and flexible mineral insulation fireproof cable becomes the mainstream electricity of fire protection field Cable product.General cable metal set uses copper sheathing, and the process is more complicated, and efficiency is low, and cost is higher, separation layer pass through frequently with by The hot lower material of temperature, can not form isolation so that isolation material is heated by broken meeting, frequently results in phenomena such as cable is short-circuit. In addition, existing monitoring moulded coal mine cable fire line is too poor, once fire occurs, monitoring core cannot normally work, Bring big inconvenience.

Utility model content

In order to overcome the deficiencies in the prior art, a kind of mineral insulation metal shield monitoring type coal mine fire prevention is provided Cable.

To achieve the above object, the utility model provides a kind of anti-thermoelectricity of mineral insulation metal shield monitoring type coal mine Cable, including cable core, the cable core are twisted by two mineral insulation cores and a monitoring core；In the gap of cable core Locate filled glass fiber silk, inorganic thermal insulation fireprotection layer is extruded outside cable core, it is exhausted that third mineral are extruded outside inorganic thermal insulation fireprotection layer Edge layer is externally provided with metallic conduction pipe in third mineral insulation, and wrapped nonwoven after coating fireprotection layer is coated outside metallic conduction pipe Cloth is externally provided with aluminium foil tinfoil in non-woven fabrics, the wrapped two-sided synthetic mica tape outside aluminium foil tinfoil, is finally squeezed in the outermost layer of cable Packet oversheath, and it is coated with fire-proof mud in the outer surface of oversheath.

Preferably, the mineral insulation core is by copper conductor, the first mineral insulation being extruded in outside copper conductor, overlapping Two-sided synthetic mica tape outside the first mineral insulation and the semi-conductive screen being extruded in outside two-sided synthetic mica tape Layer is constituted.

Preferably, the monitoring core by optical fiber, the second mineral insulation outside optical fiber and is extruded in Glass fiber inhibiting tape outside two mineral insulations is constituted.

Preferably, the third mineral insulation is made of Environmental-protective fire-proof nanometer mineral insulation material.

Preferably, first mineral insulation is made of Environmental-protective fire-proof nanometer mineral insulation material.

Preferably, second mineral insulation is made of Environmental-protective fire-proof nanometer mineral insulation material.

Compared with prior art, the beneficial effects of the utility model are：

1, the cable core of the utility model is twisted by mineral insulation core and monitoring core, to insulated wire cores and monitoring line Core has all carried out flameproof protection, has very strong fire resistance using this class formation.

2, glass fiber is just used in filling, and glass fiber is inorganic matter, does not burn, not will produce harmful substance.

3, the metallic conduction pipe compressive property of the utility model is good, and moisture-proof and good airproof performance, embossing can improve its bending Performance.

4, it is equipped with mineral insulation and adds inorganic thermal insulation fireprotection layer so that cable has fire-proof insulation from inside to outside, obtains Multiple flameproof protection is arrived；And using Environmental-protective fire-proof nanometer mineral insulation material constitute, under rated voltage can 2.5 times of excess load and As usual insulating effect is played；Long-term service temperature range is：It -40 degrees Celsius to 1200 degrees Celsius, insulate as usual；800- It is not short-circuit in 1.5 hours under the ablation of 1200 degrees Celsius of open fires, do not cause electrical fire, it more will not be combustion-supporting；In open fire ablation process In, not only fire retardant nonflame, but also no longer releasing asphyxia toxic gas has low cigarette, nontoxic, Halogen, fire-retardant characteristic；It is bearing When mechanical external force, electromagnetism interference；At low cost, good performance indexes；Insulating layer suitable for various electric wires.

5, the cable is equipped with the fireprotection layer of multilayer different structure from inside to outside so that cable has good conductive property, Outside mechanical and physical performance, fire resistance, also there is good noninflammability, this cable can not only ensure fire in case of fire Fire-fighting power supply in calamity perdurabgility, will not also prolong combustion, not generate toxic smog.

6, it is coated with fire-proof mud in oversheath superficies so that cable has fire endurance high, and oil resistant is water-fast, corrosion-resistant, Smoke amount is low, and compressive resistance is big.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Specific implementation mode

In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for Illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, art technology Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.

As shown in Figure 1, the utility model provides a kind of mineral insulation metal shield monitoring type coal mine fireproof cable, including Cable core, the cable core are twisted by two mineral insulation cores and a monitoring core；The mineral insulation core By the two-sided conjunction of copper conductor 1, the first mineral insulation 2 being extruded in outside copper conductor, overlapping outside the first mineral insulation It is constituted at mica tape 3 and the semiconductive shielding layer being extruded in outside two-sided synthetic mica tape 4；The monitoring core by optical fiber 5, The second mineral insulation 6 outside optical fiber and the glass fiber inhibiting tape 7 being extruded in outside the second mineral insulation are constituted； The gap filled glass fiber silk 8 of cable core, extrudes inorganic thermal insulation fireprotection layer 9 outside cable core, is squeezed outside inorganic thermal insulation fireprotection layer Packet third mineral insulation 10 is externally provided with metallic conduction pipe 11 in third mineral insulation, coating is coated outside metallic conduction pipe Wrapped non-woven fabrics 12 after fireprotection layer is externally provided with aluminium foil tinfoil 13 in non-woven fabrics, the wrapped two-sided synthetic mica tape outside aluminium foil tinfoil 14, finally extrude oversheath 15 in the outermost layer of cable, and fire-proof mud 16 is coated in the outer surface of oversheath, the cable from it is interior to It is externally provided with the fireprotection layer of multilayer different structure so that cable has good conductive property, mechanical and physical performance, fire resistance Outside, also there is good noninflammability, this cable can not only ensure that the fire-fighting in fire life supplies in case of fire Electricity will not also prolong combustion, not generate toxic smog.

The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill people of this field For member, without departing from the principle of this utility model, several variations and modifications can also be made, these also should be regarded as belonging to In the scope of protection of the utility model.

Claims

1. a kind of mineral insulation metal shield monitoring type coal mine fireproof cable, including cable core, it is characterised in that：The cable core It is twisted by two mineral insulation cores and a monitoring core；In the gap filled glass fiber silk of cable core, in cable Inorganic thermal insulation fireprotection layer is extruded outside core, third mineral insulation is extruded outside inorganic thermal insulation fireprotection layer, in third mineral insulation It is externally provided with metallic conduction pipe, wrapped non-woven fabrics after coating fireprotection layer is coated outside metallic conduction pipe, aluminium foil is externally provided in non-woven fabrics Tinfoil, the wrapped two-sided synthetic mica tape outside aluminium foil tinfoil, finally extrudes oversheath, and in oversheath in the outermost layer of cable Outer surface is coated with fire-proof mud.

2. mineral insulation metal shield monitoring type coal mine fireproof cable according to claim 1, it is characterised in that：It is described Mineral insulation core by copper conductor, the first mineral insulation being extruded in outside copper conductor, overlapping around the first mineral insulation Two-sided synthetic mica tape and the semiconductive shielding layer that is extruded in outside two-sided synthetic mica tape outside layer are constituted.

3. mineral insulation metal shield monitoring type coal mine fireproof cable according to claim 1, it is characterised in that：It is described Monitoring core by optical fiber, the second mineral insulation outside optical fiber and the glass being extruded in outside the second mineral insulation Silk inhibiting tape is constituted.

4. mineral insulation metal shield monitoring type coal mine fireproof cable according to claim 1, it is characterised in that：It is described Third mineral insulation be made of Environmental-protective fire-proof nanometer mineral insulation material.

5. mineral insulation metal shield monitoring type coal mine fireproof cable according to claim 2, it is characterised in that：It is described The first mineral insulation be made of Environmental-protective fire-proof nanometer mineral insulation material.

6. mineral insulation metal shield monitoring type coal mine fireproof cable according to claim 3, it is characterised in that：It is described The second mineral insulation be made of Environmental-protective fire-proof nanometer mineral insulation material.