CN113488234A

CN113488234A - Novel colliery frequency conversion device is with removing rubber cover flexible cable

Info

Publication number: CN113488234A
Application number: CN202110629506.9A
Authority: CN
Inventors: 李万松; 丁运生
Original assignee: Hefei University of Technology; Anhui Lingyu Cable Technology Co Ltd
Current assignee: Hefei University of Technology; Anhui Lingyu Cable Technology Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-10-08

Abstract

The invention relates to a novel movable rubber jacketed flexible cable for a coal mine frequency conversion device, which relates to the technical field of movable rubber jacketed flexible cables for coal mines, and comprises a tensile outer sheath and an inner sheath positioned in the tensile outer sheath, wherein the outer wall of the tensile outer sheath is provided with a ceramic sheet which is assembled for improving the wear resistance of the cable, a wrapping tape for protecting the inner sheath is arranged between the tensile outer sheath and the inner sheath, and the novel movable rubber jacketed flexible cable for the coal mine frequency conversion device is disclosed, can protect the tensile outer sheath and prolong the service life of the cable, strengthens the wear resistance of the cable through the ceramic sheet when in use, avoids the wear of the tensile outer sheath, protects an internal circuit structure, can improve the tensile property of the cable, and has good deformability due to the fact that a Kevlar fiber layer is made of a fiber composite material, so that the cable has high breaking elongation and avoids the exposure of an internal circuit caused by the breakage of the tensile outer sheath, the practical effect of the cable is poor, and the inner sheath is protected by the wrapping tape, so that the gasket and the buffering effect are achieved.

Description

Novel colliery frequency conversion device is with removing rubber cover flexible cable

Technical Field

The invention relates to the technical field of novel movable rubber jacketed flexible cables for coal mine frequency conversion devices, in particular to a novel movable rubber jacketed flexible cable for coal mine frequency conversion devices.

Background

The long-term allowable working temperature of a cable conductor is-40 to +50 ℃; the monthly average maximum relative humidity is 95% (+ 25 ℃), and the allowable laying and installation temperature of the cable is not lower than-10 ℃.

According to patent No. 201210304820.0, a mobile rubber jacketed flexible cable for coal mines is disclosed, which is composed of a tin-plated soft copper conductor, a conductor shielding layer, an insulating shielding layer, a semi-conductive tape lapping layer, a tin-plated copper wire braid layer, a wire core, a cable core, an inner sheath, an inner semi-conductive cloth tape, a monitoring wire core, an outer semi-conductive cloth tape and an outer sheath; uniformly extruding a conductor shielding layer, an insulating layer and an insulating shielding layer on a tinned soft copper conductor in a three-layer co-extrusion mode, wrapping a semi-conductive tape wrapping layer around the insulating shielding layer, and weaving a tinned copper wire braided layer on the semi-conductive tape wrapping layer to form a wire core; a plurality of wire cores are twisted into a cable core, an inner sheath is extruded on the cable core, an inner semi-conductive cloth belt and an outer semi-conductive cloth belt are wound on the inner sheath, a monitoring wire core is longitudinally placed between the inner semi-conductive cloth belt and the outer semi-conductive cloth belt, and an outer sheath is extruded on the outer semi-conductive cloth belt.

The shortcoming of prior art lies in that, after long-time the use, the cable oversheath can be damaged at the removal in-process to make outer semi-conductive layer wearing and tearing, lead to the shielding effect to weaken, when serious, can be with wearing and tearing inner sheath and filling layer, make the internal circuit expose, lead to the practical function of this cable not good, can make the cable take place to curl at the removal in-process simultaneously, make the oversheath of cable break.

Disclosure of Invention

The invention aims to provide a novel movable rubber jacketed flexible cable for a coal mine frequency conversion device, which can protect a tensile outer sheath, prolong the service life of the cable, improve the tensile property of the cable and protect an inner sheath.

Technical scheme

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme: the utility model provides a novel colliery frequency conversion device is with removing rubber cover flexible cable, include the tensile oversheath and be located inner sheath in the tensile oversheath, be provided with the potsherd on the outer wall of tensile oversheath, the potsherd is assembled and is used for improving the wearability of cable, the tensile oversheath with be provided with between the inner sheath and be used for the protection the inner sheath around the band

Preferably, the tensile outer sheath comprises a polyvinyl chloride layer and a Kevlar fiber layer, and the Kevlar fiber layer is arranged on the inner wall of the polyvinyl chloride layer.

Preferably, a plurality of rubber seats are fixedly installed on the outer wall of the polyvinyl chloride layer, and ceramic plates are embedded on the outer sides of the rubber seats.

Preferably, an outer semiconductor layer is arranged between the wrapping tape and the Kevlar fiber layer.

Preferably, the inner sheath is filled with a filling layer, a ground wire and a power wire are arranged in the filling layer, and the ground wire and the power wire are annularly arrayed in the inner sheath.

Preferably, the power line comprises a power line core conductor, a power line core conductor shielding layer, a power line core insulating layer and an insulation shielding layer, wherein the insulation shielding layer is positioned in the inner sheath, the power line core insulating layer is sleeved in the insulation shielding layer, the power line core conductor shielding layer is sleeved in the power line core insulating layer, and the power line core conductor is sleeved in the power line core conductor shielding layer.

Preferably, the ground wire comprises a ground wire core conductor and a semi-conductive shielding layer, the semi-conductive shielding layer is located in the inner sheath, and the ground wire core conductor is sleeved in the semi-conductive shielding layer.

Compared with the prior art, the novel movable rubber jacketed flexible cable for the coal mine frequency conversion device provided by the embodiment of the invention has the following beneficial effects:

1. the ceramic chip type cable protection device can protect the tensile outer sheath, prolong the service life of the cable, enhance the abrasion resistance of the cable through the ceramic chip when in use, and avoid the abrasion of the tensile outer sheath.

2. The invention can improve the tensile resistance of the cable, and the Kevlar fiber layer is a fiber composite material, has good deformability and high fracture elongation in use.

3. According to the invention, the inner sheath is protected by the wrapping tape, so that the padding and buffering functions are realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic view of the outer structure of the tensile outer sheath of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic view of the inner cross-sectional structure of the tensile outer sheath of the present invention;

FIG. 4 is a schematic view of the overall cross-sectional structure of the present invention;

fig. 5 is a schematic view of the overall internal structure of the present invention.

In the figure: 1. a tensile outer sheath; 2. a rubber seat; 3. a ceramic plate; 4. an outer semiconductor layer; 5. an inner sheath; 6. wrapping a tape; 7. a filling layer; 8. a ground wire; 9. a power line; 11. a polyvinyl chloride layer; 12. a Kevlar fiber layer; 81. a ground core conductor; 82. a semiconductive shield layer; 91. a power core conductor; 92. a power core conductor shielding layer; 93. a power wire core insulating layer; 94. and an insulating shielding layer.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure will be more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in fig. 1 to 5, the novel movable rubber jacketed flexible cable for the coal mine frequency conversion device provided by the invention comprises a tensile outer jacket 1 and an inner jacket 5 positioned in the tensile outer jacket 1, wherein a ceramic sheet 3 is arranged on the outer wall of the tensile outer jacket 1, the ceramic sheet 3 is assembled to improve the wear resistance of the cable, a wrapping tape 6 for protecting the inner jacket 5 is arranged between the tensile outer jacket 1 and the inner jacket 5, the tensile outer jacket 1 is protected by the ceramic sheet 3 during use, the tensile outer jacket 1 is prevented from being excessively worn in the cable moving process, and an internal circuit structure is protected.

As shown in fig. 1, 2, 4 and 5, a plurality of rubber seats 2 are fixedly mounted on the outer wall of the polyvinyl chloride layer 11, the ceramic sheet 3 is embedded in the rubber seats 2 to prevent the filling layer 7 from being exposed, and partial discharge between the tensile outer sheath 1 and the tensile inner sheath 5 can be prevented through the outer semiconductor layer 4.

As shown in fig. 3, the ground wire 8 includes a ground core conductor 81 and a semi-conductive shielding layer 82, the ground core conductor 81 is protected by the semi-conductive shielding layer 82, electric field concentration is avoided, the power line 9 includes a power core conductor 91, a power core conductor shielding layer 92, a power core insulating layer 93 and an insulating shielding layer 94, since the power core conductor 91 is formed by twisting a plurality of strands of copper wires, the electric field generated by the power line is uneven, the power core conductor shielding layer 92, the power core insulating layer 93 and the insulating shielding layer 94 protect the power core conductor 91, and the electric field is homogenized.

The first embodiment is as follows:

further, as shown in fig. 3, the tensile outer sheath 1 comprises a polyvinyl chloride layer 11 and a kevlar fiber layer 12, the kevlar belongs to a liquid crystalline rod-shaped molecule, and has very good thermal stability, fire resistance, chemical resistance, insulativity, high strength and modulus, the tensile property of the cable can be improved through 12, because the kevlar fiber layer 12 is a novel aramid fiber composite material and has good deformability, the kevlar fiber layer has very high fracture elongation when in use, and meanwhile, the polyvinyl chloride layer 11 has certain wear resistance, so that the circuit structure inside the tensile outer sheath 1 is further protected.

Example two:

further, as shown in fig. 3, a wrapping tape 6 is wound on the outer wall of the inner sheath 5, concentric wrapping is adopted, each wrapping head is covered by one layer, and the whole wrapping process can be divided into rotary motion and linear motion. The tape 6 area dish is along with the bag aircraft nose around doing rotary motion at inner sheath 5, just twines on the outer wall at inner sheath 5 around the tape 6, through protecting inner sheath 5 around the tape 6, plays liner and cushioning effect.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a novel colliery frequency conversion device is with removing rubber cover flexible cable, includes tensile oversheath (1) and is located inner sheath (5) in tensile oversheath (1), its characterized in that: be provided with ceramic wafer (3) on the outer wall of tensile oversheath (1), ceramic wafer (3) are assembled and are used for improving the wearability of cable, tensile oversheath (1) with be provided with between inner sheath (5) and be used for the protection the wrapping band (6) of inner sheath (5).

2. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 1 is characterized in that: the tensile outer sheath (1) comprises a polyvinyl chloride layer (11) and a Kevlar fiber layer (12), and the Kevlar fiber layer (12) is arranged on the inner wall of the polyvinyl chloride layer (11).

3. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 2 is characterized in that: the outer wall of the polyvinyl chloride layer (11) is fixedly provided with a plurality of rubber seats (2), and the outer side of each rubber seat (2) is inlaid with a ceramic plate (3).

4. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 1 is characterized in that: an outer semiconductor layer (4) is arranged between the wrapping tape (6) and the Kevlar fiber layer (12).

5. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 1 is characterized in that: the inner sheath (5) is filled with a filling layer (7), a ground wire (8) and a power wire (9) are arranged in the filling layer (7), and the ground wire (8) and the power wire (9) are annularly arrayed in the inner sheath (5).

6. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 5 is characterized in that: power line (9) are including power core conductor (91), power core conductor shielding layer (92), power core insulating layer (93) and insulation shielding layer (94), insulation shielding layer (94) are located inner sheath (5), power core insulating layer (93) have cup jointed in insulation shielding layer (94), power core conductor shielding layer (92) have cup jointed in power core insulating layer (93), power core conductor shielding layer (92) have cup jointed in power core conductor shielding layer (92), power core conductor shielding layer (91) have cup jointed in power core conductor shielding layer (92).

7. The novel movable rubber jacketed flexible cable for the coal mine frequency conversion device according to claim 5 is characterized in that: the ground wire (8) comprises a ground wire core conductor (81) and a semi-conductive shielding layer (82), the semi-conductive shielding layer (82) is located in the inner sheath (5), and the ground wire core conductor (81) is connected in the semi-conductive shielding layer (82) in a sleeved mode.