CN205900117U

CN205900117U - Improved generation metallic shield keeps watch on mining fire resisting cable of moulded coal

Info

Publication number: CN205900117U
Application number: CN201620672958.XU
Authority: CN
Inventors: 杨凤霞; 余新强; 毛林林
Original assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Current assignee: JIANGSU ZHUYING SPECIAL CABLE CO Ltd
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2017-01-18
Anticipated expiration: 2026-06-30

Abstract

The utility model discloses an improved generation metallic shield keeps watch on mining fire resisting cable of moulded coal, including a cable core, the cable core form by three insulation core and the transposition of monitoring core, its characterized in that fills the glass silk in the space of cable core department, is cable core crowded package thickness outward 2.65 3.65mm the flame retardant coating, flame retardant coating crowded package thickness outward is 2 are are 4mm's metal conductive tube, metal conductive tube equipped with thickness outward and 3 6mm's oversheath, the oversheath in still be equipped with reserve monitoring core. The utility model has the advantages of very strong refractiveness, the external diameter is little, light in weight is small, distort the radius little, from load -carrying properties is strong, the bendability good.

Description

A kind of improved metal shielding monitors moulded coal mine fire-resistant cable

Technical field

This utility model is related to electric wire field, specifically refers to a kind of improved metal shielding and monitors moulded coal mine fire-resistant Cable.

Background technology

At present, the power supply connection of underground moving transformator and similar devices uses metal shield monitoring type rubber using colliery substantially Sleeve flexible cable, such screen layer having conductive material to make outside every phase core insulation, this screen layer again with ground heart yearn It is tightly coupled, therefore, when cable core insulation is subject to wound to damage, conductive heart yearn is inevitable first to contact screen layer, then By this conductive screen layer, heart yearn make leakage relay protection act, voluntarily cut off the electricity supply.Thus shielded cable just plays The effect cut off the electricity supply in advance.Avoid the alternate accident that is short-circuited of cable, also can prevent person electric shock, reduce and draw because of electric spark The coal dust rising and the danger of gas explosion.In addition to meeting shielded cable structural requirement, cable also have one supervision layer, monitor line by Tin metal silk forms, and its effect is can to find cable and electrical equipment potential safety hazard operationally in time, timely will Hidden danger feeds back control room on well, increased the safety in utilization of cable.

And prior art is there is a problem in that colliery metal shield monitoring type cable is compared with other with pressing grades, With the mine cable in section, its external diameter, weight, volume, bending radius are all larger, during using, laying, have certain Difficulty.Power with coal mine equipment increases, and the colliery for super large-scale is also existed with the demand of metal shield monitoring type cable Increase, and when producing the type cable of super large-scale, its production difficulty is larger, need large-scale cable-former, large-scale is continuous Curing line, if producing such cable of long length, its weight weight, beyond the production capacity of existing equipment；In addition, it is existing Supervision moulded coal mine cable there is no fire resistance, once there is fire, supervision core cannot normally work, bring very Big inconvenience.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of use, lay conveniently, and the production cycle is little, produces into This is low, and also saves the use of raw material, saves the metal shield monitoring type coal rubber sheathed flexible cable for mine of energy use, And such cable also has, and external diameter is little, lightweight, small volume, distort that radius is little, long service life the features such as.

A kind of improved metal shielding described in the utility model monitors moulded coal mine fire-resistant cable, including cable core, described Cable core be to be formed by three insulated wire cores and supervision core are stranded；In the gap filling glass silk of cable core, outside cable core Extrude the flame retardant coating that thickness is 2.65-3.65mm, outside flame retardant coating, extrude the metallic conduction pipe that thickness is 2-4mm, metallic conduction pipe It is externally provided with the oversheath that thickness is 3-6mm；It is additionally provided with reserve monitor core in described oversheath.

Improve further, described insulated wire cores are by aluminium alloy conductor, wrapped semi-conductive cloth tape outside aluminium alloy conductor And the insulating barrier being extruded in outside semi-conductive cloth tape is constituted.

Improve further, described supervision core by optical fiber, wrapped metal screen layer outside optical fiber and is extruded in gold The first glass tape belonging to outside screen layer is constituted.

Improve further, described reserve monitor core by optical fiber and is extruded in the second glass tape structure outside optical fiber Become.

Improve further, in described aluminium alloy conductor, be provided with steel wire strengthening core.

The beneficial effects of the utility model are:

Compared with prior art, this utility model patent cable core is formed by insulated wire cores and supervision core are stranded, then in cable Extrude flame retardant coating outside core, using this class formation, there is very strong fire resistance, external diameter is little, lightweight, small volume, distortion radius is little, When producing the cable of big specification it is not necessary to use main equipment, do not reduce level of security simultaneously, substantially reduce life simultaneously yet In the product cycle, reduce production cost, decrease using and decreasing using of the energy of raw material.

Filling of the present utility model using glass fiber and adopts glass tape, and glass fiber is inorganic matters, does not burn, will not Produce harmful substance, and protect optical fiber；This utility model have very strong from load-carrying properties, the conductor central layer of cable has one Root center strengthening core, the stress point of conductor concentrates on the strengthening core of center, and cable, in folding and unfolding winding process, protects conductor to move back Fiery copper wire, and be not easily broken.

This utility model is provided with reserve monitor core it is ensured that in the case that supervision core is damaged in cable core, having individual standby With it is ensured that cable can normally use.

Metallic conduction pipe compressive property of the present utility model is good, moistureproof and good airproof performance, and embossing can improve its bendability Energy.

Brief description

Fig. 1 is structural representation of the present utility model.

Specific embodiment

As shown in figure 1, a kind of improved metal shielding described in the utility model monitors moulded coal mine fire-resistant cable, including Cable core, described cable core is to be formed by three insulated wire cores and supervision core are stranded；Described insulated wire cores are by aluminium alloy Conductor 1, wrapped in the semi-conductive cloth tape 2 outside aluminium alloy conductor and the insulating barrier 3 that is extruded in outside semi-conductive cloth tape is constituted；Described Supervision core by optical fiber 4, wrapped in the metal screen layer 5 outside optical fiber and be extruded in the first glass fiber outside metal screen layer Band 6 composition.

Then, in the gap filling glass silk 8 of cable core, outside cable core, extrude the flame retardant coating 9 that thickness is 2.65-3.65mm, The metallic conduction pipe 10 that thickness is 2-4mm is extruded, metallic conduction pipe is externally provided with the oversheath 11 that thickness is 3-6mm outside flame retardant coating； It is additionally provided with reserve monitor core, described reserve monitor core by optical fiber 4 and is extruded in outside optical fiber in described oversheath Second glass tape 7 is constituted.

Very strong it is provided with steel wire strengthening core 12 in order to have from load-carrying properties, described aluminium alloy conductor.

This utility model concrete application approach is a lot, the above be only preferred implementation of the present utility model it should Point out, for those skilled in the art, on the premise of without departing from this utility model principle, can also make Go out some improvement, these improvement also should be regarded as protection domain of the present utility model.

Claims

1. a kind of improved metal shielding monitors moulded coal mine fire-resistant cable, and including cable core, described cable core is by three eradication edge Core and supervision core is stranded forms；It is characterized in that, in the gap filling glass silk of cable core, outside cable core, extrude thickness Flame retardant coating for 2.65-3.65mm, extrudes the metallic conduction pipe that thickness is 2-4mm outside flame retardant coating, metallic conduction pipe is externally provided with thickness Spend the oversheath for 3-6mm；It is additionally provided with reserve monitor core in described oversheath.

2. improved metal according to claim 1 shielding monitors moulded coal mine fire-resistant cable it is characterised in that described Insulated wire cores by aluminium alloy conductor, wrapped in the semi-conductive cloth tape outside aluminium alloy conductor and be extruded in exhausted outside semi-conductive cloth tape Edge layer is constituted.

3. improved metal according to claim 1 shielding monitors moulded coal mine fire-resistant cable it is characterised in that described Supervision core by optical fiber, wrapped in the metal screen layer outside optical fiber and be extruded in the first glass tape structure outside metal screen layer Become.

4. improved metal according to claim 1 shielding monitors moulded coal mine fire-resistant cable it is characterised in that described By optical fiber and the second glass tape of being extruded in outside optical fiber is constituted reserve monitor core.

5. improved metal according to claim 2 shielding monitors moulded coal mine fire-resistant cable it is characterised in that described It is provided with steel wire strengthening core in aluminium alloy conductor.