CN216719545U

CN216719545U - Metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for coal mining machine

Info

Publication number: CN216719545U
Application number: CN202122861595.8U
Authority: CN
Inventors: 钱章兴; 刘春艳
Original assignee: Shanghai Lanhao Electric Co ltd
Current assignee: Shanghai Lanhao Electric Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-06-10
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine, which comprises: the cable core and wrap up at the outside interior sheath, enhancement layer, the outer jacket of cable core in proper order, the cable core includes: the optical fiber module comprises a power wire core, an optical fiber assembly and a monitoring wire core; the power wire core and the monitoring wire core are formed by twisting by taking the optical fiber assembly as a circle center, and the power wire core is tightly attached to the monitoring wire core; the monitoring wire core is composed of a control wire core and a monitoring wire core, and the control wire core is arranged in the center of the monitoring wire core. This cable has the control sinle silk and the supervision sinle silk of high security performance of high shielding effect, and compound can be able to bear or endure the crooked super flexible optic fibre of small radius simultaneously, has realized that anti-interference control signal transmission and light signal transmission coexist, and enhancement layer structural design makes this cable realize anti torsion performance, greatly increased cable life.

Description

Metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for coal mining machine

Technical Field

The utility model relates to the field of cables, in particular to a metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine.

Background

Along with the development of science and technology, mine coal mining equipment develops in the direction of intellectualization and safety, products matched with the coal mining equipment also necessarily develop in the direction of intellectualization and safety, otherwise the coal mining equipment is gradually eliminated, the mine cable is not only scratched by gangue and foreign matters due to complex working conditions of a coal mining surface in the use process, but also has the conditions of frequent bending, torsion and the like in the use process, the complex working conditions are easy to cause the damage of a control wire core and a power wire core of the coal mining machine cable, the cable has larger leakage current under the condition that a cable insulating layer is damaged but not completely broken down, if the system does not monitor the leakage current in time, the insulating layer can generate the conditions of aging and even burning under the continuous action of the leakage current, the insulation damage is more and more serious, and finally the insulating layer is completely broken down, so that a circuit can not be switched on, the unable normal operating of equipment causes very big loss to the colliery, and the cable takes place the short circuit in the twinkling of an eye simultaneously, still can produce the spark, causes gas explosion, influences the coal mine safety.

With the development of coal mine unmanned and intelligent, optical fiber communication is more and more applied to underground coal mines, but cables used in coal mining and other movement and mobile fields need to be frequently bent in the using process and need to be subjected to the comprehensive action of various mechanical external forces such as dragging, pressing and smashing, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine, which is provided with a control wire core with high shielding effect and a monitoring wire core with high safety performance, and is compounded with an ultra-flexible optical fiber capable of resisting small-radius bending, so that the coexistence of anti-interference control signal transmission and optical signal transmission is realized, and the structural design of a reinforcing layer enables the cable to realize anti-torsion performance, thereby greatly prolonging the service life of the cable.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine comprises: the cable core and wrap up at the outside interior sheath, enhancement layer, the outer jacket of cable core in proper order, the cable core includes: the optical fiber module comprises a power wire core, an optical fiber assembly and a monitoring wire core; the power wire core and the monitoring wire core are formed by twisting by taking the optical fiber assembly as a circle center, and the power wire core is tightly attached to the monitoring wire core; the monitoring wire core is composed of a control wire core and a monitoring wire core, and the control wire core is arranged in the center of the monitoring wire core.

Furthermore, three power wire cores, one optical fiber assembly and three monitoring wire cores are arranged in the cable core.

Furthermore, the stranding pitch diameter ratio of the power wire core and the monitoring wire core is 2-16 times.

Further, the control wire core comprises: a control line conductor and a control line insulating layer coated outside the control line conductor.

Further, the monitoring core comprises: the monitoring wire comprises a monitoring wire conductor and a semi-conducting layer coated outside the monitoring wire conductor, wherein the monitoring wire conductor is wound outside a control wire insulating layer by adopting a tinned copper wire bundle with the diameter not more than 0.21mm, and the transition resistance of the semi-conducting layer is not more than 3000 omega.

Further, the power core includes: the power line conductor, the power line insulating layer coated outside the power line conductor and the metal shielding layer outside the power line insulating layer.

Furthermore, the optical fiber assembly is composed of an optical fiber core and an optical fiber protective layer coated on the optical fiber core, and the optical fiber assembly can resist bending of 180 degrees.

Further, the optical fiber core is a multimode optical fiber or a single mode optical fiber.

Further, the reinforcing layer is of a winding type structure or a weaving type structure.

Compared with the prior art, the nonmetal shielding monitoring reinforced optical fiber composite flexible cable for the coal mining machine adopting the technical scheme has the following beneficial effects: the cable core insulation layer is damaged and timely gives an alarm by monitoring the cable core in the cable, blasting and even gas explosion conditions caused by cable leakage are avoided, and meanwhile, the problem of optical fiber vitrification and easy breakage can be perfectly solved by the super-flexible optical fiber in the cable, and interference-free signal transmission is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

reference numerals: 1. a control wire core; 11. a control line conductor; 12. a control line insulating layer; 2. a power wire core; 21. a power line conductor; 22. a power line insulating layer; 23. a metal shielding layer; 3. an optical fiber assembly; 4. monitoring the wire core; 41. monitoring the core conductor; 42. a semiconducting layer; 5. an inner protective layer; 6. a reinforcing layer; 7. an outer jacket.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, a metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine comprises: the cable core and wrap up at the outside interior sheath 5 of cable core, enhancement layer 6, outer jacket 7 in proper order, the cable core includes: the power wire core 2, the optical fiber assembly 3 and the monitoring wire core; the power wire core 2 and the monitoring wire core are formed by twisting by taking the optical fiber assembly 3 as a circle center, and the power wire core 2 is tightly attached to the monitoring wire core; the monitoring wire core is composed of a control wire core 1 and a monitoring wire core 4, and the control wire core 1 is arranged in the center of the monitoring wire core 4.

In this example, further, be equipped with power core 2 three, 3 optical fiber component, three of control sinle silk in the cable core.

In the embodiment, the twisting pitch ratio of the power wire core 2 and the monitoring wire core is 2-16 times.

Further in this example, the control wire core 1 comprises: a control line conductor 11 and a control line insulating layer 12 covering the control line conductor 11.

Further in this example, the monitoring wire core 4 comprises: the monitoring wire comprises a monitoring wire core 4 conductor and a semi-conductive layer 42 coated outside the monitoring wire conductor, wherein the monitoring wire conductor is wound outside a control wire insulating layer 12 by adopting a tinned copper wire bundle with the diameter of not more than 0.21mm, and the semi-conductive layer 42 has the transition resistance of not more than 3000 omega.

Further in this example, the power wire core 2 comprises: a power line conductor 21, a power line insulating layer 22 covering the outside of the power line conductor 21, and a metal shield layer 23 outside the power line insulating layer 22.

In this embodiment, the optical fiber assembly 3 is composed of an optical fiber core and an optical fiber sheath coated on the optical fiber core, and the optical fiber sheath is composed of high strength fiber and FEP, and can achieve 180 ° bending resistance.

Further in this example, the optical fiber core is a multimode optical fiber or a single mode optical fiber.

In this embodiment, the reinforcing layer 6 is of a winding type structure or a weaving type structure, wherein the pitch-diameter ratio of the winding type structure is 2-8 times, and the coverage rate is not less than 45%; the woven structure can be formed by weaving a plurality of strands of high-strength fibers or other flexible materials, and also can be formed by weaving a galvanized steel wire and a tinned copper wire, and the weaving coverage rate is not less than 45%.

The inner protective layer and the outer protective layer are made of high molecular polymers, the tensile strength of the inner protective layer and the outer protective layer is not less than 20Mpa, the elongation is not less than 500%, and the tear strength is not less than 10N/mm.

A metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine is suitable for use occasions with small-radius bending and torsion resistant requirements. Meanwhile, the damage of a core insulating layer in the cable can be found in time through the monitoring core 4 in the cable, an alarm is sent out in time, and the blasting condition or even the gas explosion condition caused by cable leakage is avoided. Meanwhile, the super-flexible optical fiber in the cable can perfectly solve the problems of optical fiber vitrification and easy breakage, and the interference-free transmission of signals is realized.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims

1. A metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for a coal mining machine comprises: the cable core and wrap up at the outside interior sheath, enhancement layer, the outer jacket of cable core in proper order, its characterized in that: the cable core includes: the optical fiber module comprises a power wire core, an optical fiber assembly and a monitoring wire core; the power wire core and the monitoring wire core are formed by stranding by taking the optical fiber assembly as a circle center, and the power wire core and the monitoring wire core are tightly attached; the monitoring wire core is composed of a control wire core and a monitoring wire core, and the control wire core is arranged in the center of the monitoring wire core.

2. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 1, characterized in that: the cable core is internally provided with three power cores, one optical fiber assembly and three monitoring cores.

3. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 2, characterized in that: the stranding pitch diameter ratio of the power wire core and the monitoring wire core is 2-16 times.

4. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 2, characterized in that: the control line core includes: the control line conductor and the control line insulating layer coated outside the control line conductor.

5. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 4, characterized in that: the monitoring wire core comprises: the monitoring cable comprises a monitoring cable conductor and a semi-conducting layer coated outside the monitoring cable conductor, wherein the monitoring cable conductor is wound outside a control line insulating layer by adopting a tinned copper wire bundle with the diameter not larger than 0.21mm, and the transition resistance of the semi-conducting layer is not larger than 3000 omega.

6. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 1, characterized in that: the power line core comprises: the power line conductor, the power line insulating layer coated outside the power line conductor and the metal shielding layer outside the power line insulating layer.

7. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 1, characterized in that: the optical fiber component consists of an optical fiber core and an optical fiber protective layer coated on the optical fiber core, and can resist 180-degree bending.

8. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 7, characterized in that: the optical fiber core is a multimode optical fiber or a single mode optical fiber.

9. The metal shielding monitoring reinforced optical fiber composite rubber jacketed flexible cable for the coal mining machine according to claim 7, characterized in that: the reinforcing layer is of a winding type structure or a weaving type structure.