CN216697937U

CN216697937U - High life fire prevention mining cable

Info

Publication number: CN216697937U
Application number: CN202123429839.1U
Authority: CN
Inventors: 陈成州; 陈娇; 黄冰玉
Original assignee: Shanghai Shangli Special Cable Co ltd
Current assignee: Shanghai Shangli Special Cable Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-07
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a long-life fireproof mine cable, which belongs to the technical field of power cables and comprises an inner core, wherein an inner liner is coated outside the inner core, a water-blocking layer is coated outside the inner liner, a flame-retardant layer is coated outside the water-blocking layer, a plurality of groups of fixing frames are arranged between the water-blocking layer and the flame-retardant layer, a vacuum cavity is arranged between the plurality of groups of fixing frames and the water-blocking layer as well as the flame-retardant layer, an armor layer is coated outside the flame-retardant layer and comprises an inner armor layer and an outer armor layer, an outer sheath is coated outside the armor layer, an elastic body is arranged between the outer sheath and the armor layer, the inner core comprises a shielding layer, an insulating layer and a conductor core, the conductor core is coated with an insulating layer, a hemispherical layer is coated outside the insulating layer, the tensile property and the twisting resistance of the cable are enhanced through a copper strip and a steel strip, the inner core is prevented from being broken, the strength of the cable is improved, and elastic restoring force is provided through a rubber block of the hemispherical body, when the outer sheath is extruded, the inner core is protected, and the service life of the cable is further prolonged.

Description

Long-life fireproof mine cable

Technical Field

The utility model belongs to the technical field of power cables, and particularly relates to a long-life fireproof mine cable.

Background

The mining cable generally refers to wire and cable products for ground equipment and underground equipment used in the coal mining industry, and the wire and cable products comprise cables for communication, illumination and signal equipment on a coal mining machine and a conveyor, power cables for electric drill cables, cap lamp wires, power cables for underground mobile substations and the like. And because the environment under the mine is very abominable to and need often frequent collision and drag, traditional novel mining cable tensile strength is low, life is short, can not satisfy the condition of modern borehole operation basically, therefore mining cable's intensity is urgent to be improved, and mining cable must possess fire behavior when using simultaneously, and then improves the life of cable.

SUMMERY OF THE UTILITY MODEL

In order to improve the tensile strength and prolong the service life of the mining cable conveniently, the utility model provides a long-life fireproof mining cable.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a high life fire prevention mining cable, includes the inner core, the outer cladding of inner core has the inner liner, the outer cladding of inner liner has the water blocking layer, the outer cladding of water blocking layer has fire-retardant layer, be provided with the multiunit mount between water blocking layer and the fire-retardant layer, the multiunit be provided with the vacuum cavity between mount and water blocking layer and the fire-retardant layer, the outer cladding of fire-retardant layer has the armor, the armor includes interior armor and outer armor, interior armor is located outer armor inboard, the outer cladding of armor has the oversheath, be provided with the elastomer between oversheath and the armor, the inner core includes shielding layer, insulating layer and conductor core, the outer cladding of conductor core has the insulating layer, the outer cladding of insulating layer has the shielding layer.

Preferably, the inner core is provided with threely, just be provided with the filling layer between inner core and the inner liner, the filling layer is graphite alkene layer, can accelerate the inner core heat dissipation for the inside temperature of inner core can not be too high.

Preferably, the flame retardant layer is filled with inorganic mineral materials, the inorganic mineral materials have good heat insulation and fire resistance, and the fireproof and heat insulation performance of the cable is further improved by matching with the vacuum cavity.

Preferably, the inner armor layer is formed by tightly winding a copper strip spiral, the outer armor layer is formed by tightly winding a steel strip spiral, the spiral winding directions of the inner armor layer and the outer armor layer are opposite, and the copper strip and the steel strip can enhance the tensile resistance and the distortion resistance of the cable and prevent the inner core from being broken.

Preferably, the elastomer is a hemisphere, and the elastomer is a rubber block, and the rubber block has good elasticity and is insulating.

Preferably, the elastic body is fixedly connected with the outer wall of the armor layer, a gap is reserved between the elastic body and the outer sheath, the elastic body is provided with a plurality of groups, the plurality of groups of elastic bodies are distributed between the outer sheath and the armor layer in an annular array mode, elastic restoring force is provided through the rubber blocks of the hemispheroids, and when the outer sheath is extruded, the inner core is protected.

Preferably, the water-blocking layer is a water-blocking tape, and water and moisture are blocked through the water-blocking tape.

Compared with the prior art, the utility model has the following beneficial effects:

1. the tensile property and the distortion resistance of the cable are enhanced through the copper strips and the steel strips by arranging the armor layer and the elastomer, the inner core is prevented from being broken, the strength of the cable is improved, the elastic restoring force is provided through the hemispherical rubber blocks, and when the outer sheath is extruded, the inner core is protected, so that the service life of the cable is prolonged;

2. through setting up fire-retardant layer, vacuum cavity and water blocking layer, the fire-retardant intussuseption is filled with inorganic mineral substance material, makes the thermal-insulated fire behavior of cable better to cooperation vacuum cavity further improves cable fire prevention and heat insulation performance, and the water blocking layer is the hosepipe, blocks water the dampproofing to the inner core through the hosepipe.

Drawings

Fig. 1 is a schematic structural diagram of an overall long-life fireproof mining cable provided by the utility model;

FIG. 2 is an overall sectional view of a long-life fireproof mining cable provided by the utility model;

FIG. 3 is a schematic structural diagram of a cable core part for a long-life fireproof mine, provided by the utility model;

fig. 4 is a schematic structural diagram of a cable armor layer part for a long-life fireproof mine, which is provided by the utility model.

In the figure: 1. an inner core; 2. an inner liner layer; 3. a water resistant layer; 4. a flame retardant layer; 5. a fixed mount; 6. a vacuum chamber; 7. an armor layer; 8. an inner armor layer; 9. an outer armor layer; 10. an outer sheath; 11. a shielding layer; 12. an insulating layer; 13. a conductor core; 14. an elastomer; 15. and (6) filling the layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a long-life fireproof mining cable comprises an inner core 1, wherein an inner liner 2 is coated outside the inner core 1, the inner liner 2 adopts a wrapping structure, a waterproof layer 3 is coated outside the inner liner 2, the waterproof layer 3 is a waterproof tape, water and moisture are blocked through the waterproof tape, a flame retardant layer 4 is coated outside the waterproof layer 3, an inorganic mineral material is filled in the flame retardant layer 4, the inorganic mineral material has better heat insulation and fire resistance, a plurality of groups of fixing frames 5 are arranged between the waterproof layer 3 and the flame retardant layer 4, a vacuum cavity 6 is arranged between the groups of fixing frames 5 and the waterproof layer 3 and the flame retardant layer 4, the fireproof and heat insulation performance is further improved through the vacuum cavity 6, the inner core 1 comprises a shielding layer 11, an insulating layer 12 and a conductor core 13, the insulating layer 12 is coated outside the insulating layer 12, the shielding layer 11 is coated outside the insulating layer 1, three inner cores 1 are provided, and a filling layer 15 is arranged between the inner core 1 and the inner liner 2, the filling layer 15 is a graphene layer, so that heat dissipation can be accelerated, and the internal temperature of the inner core 1 cannot be too high.

Referring to fig. 2, an outer sheath 10 is wrapped outside an armor layer 7, the outer sheath 10 is in contact with the outside, an elastic body 14 is arranged between the outer sheath 10 and the armor layer 7, the elastic body 14 is a hemisphere, the elastic body 14 is a rubber block which is good in elasticity and insulating, the elastic body 14 is fixedly connected with the outer wall of the armor layer 7, a gap is reserved between the elastic body 14 and the outer sheath 10, the elastic body 14 is provided with a plurality of groups, the plurality of groups of elastic bodies 14 are distributed between the outer sheath 10 and the armor layer 7 in an annular array mode, elastic restoring force is provided through the rubber block of the hemisphere, and when the outer sheath 10 is extruded, the inner core 1 is protected.

Referring to fig. 1 and 4, the flame retardant layer 4 is coated with an armor layer 7, the armor layer 7 comprises an inner armor layer 8 and an outer armor layer 9, the inner armor layer 8 is located on the inner side of the outer armor layer 9, the inner armor layer 8 is formed by tightly winding a copper strip spiral, the outer armor layer 9 is formed by tightly winding a steel strip spiral, the spiral winding directions of the inner armor layer 8 and the outer armor layer 9 are opposite, the copper strip and the steel strip can enhance the stretch-resistant and distortion-resistant performance of the cable, the inner core 1 is prevented from being broken, and the strength of the cable is improved.

The operating principle of the present invention will now be described as follows: through being filled with inorganic mineral substance material in fire-retardant layer 4, it is better to make the thermal-insulated fire behavior of cable, and cooperation vacuum cavity 6, further improve cable fire-proof heat-proof properties, water blocking layer 3 is the water blocking tape, block water and prevent damp to inner core 1 through the water blocking tape, filling layer 15 is graphite alkene layer, can dispel the heat with higher speed, make 1 inside temperature of inner core too high, inner armor 8 is formed by the inseparable winding of copper strips spiral, outer armor 9 is formed by the inseparable winding of steel strip spiral, cable stretch-proofing and antitorque performance can be strengthened to copper strips and steel strip, prevent the fracture of inner core 1, improve cable intensity, the block rubber through the hemisphere, provide the elastic restoring force, when oversheath 10 receives the extrusion, protect inner core 1, and then improve cable life.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a long-life fire prevention mining cable, includes inner core (1), its characterized in that, inner core (1) outer cladding has inner liner (2), inner liner (2) outer cladding has water blocking layer (3), water blocking layer (3) outer cladding has fire-retardant layer (4), be provided with multiunit mount (5) between water blocking layer (3) and fire-retardant layer (4), multiunit be provided with vacuum chamber (6) between mount (5) and water blocking layer (3) and fire-retardant layer (4), fire-retardant layer (4) outer cladding has armor (7), armor (7) include interior armor (8) and outer armor (9), interior armor (8) are located outer armor (9) inboard, armor (7) outer cladding has oversheath (10), be provided with elastomer (14) between oversheath (10) and armor (7), the inner core (1) comprises a shielding layer (11), an insulating layer (12) and a conductor core (13), wherein the insulating layer (12) is coated outside the conductor core (13), and the shielding layer (11) is coated outside the insulating layer (12).

2. A long-life fire-proof mining cable according to claim 1, characterized in that the number of the inner cores (1) is three, and a filling layer (15) is arranged between the inner cores (1) and the inner liner (2).

3. A long-life fire-proof mining cable according to claim 1, characterized in that the fire-retardant layer (4) is filled with inorganic mineral material.

4. A long-life fire-proof mining cable according to claim 1, characterized in that the inner armor layer (8) is formed by tightly winding a copper strip spiral, the outer armor layer (9) is formed by tightly winding a steel strip spiral, and the spiral winding directions of the inner armor layer (8) and the outer armor layer (9) are opposite.

5. A long-life fire-proof mining cable according to claim 1, characterized in that the elastomer (14) is a hemisphere and the elastomer (14) is a rubber block.

6. A long-life fireproof mine cable according to claim 5, wherein the elastomer (14) is fixedly connected with the outer wall of the armor layer (7), a gap is reserved between the elastomer (14) and the outer sheath (10), the elastomer (14) is provided with a plurality of groups, and the plurality of groups of the elastomer (14) are distributed between the outer sheath (10) and the armor layer (7) in an annular array.

7. A long-life fire-resistant mining cable according to claim 1, characterized in that the water-resistant layer (3) is a water-resistant tape.