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CN-121983376-A - Mining cable with fault early warning function and early warning method

CN121983376ACN 121983376 ACN121983376 ACN 121983376ACN-121983376-A

Abstract

The invention discloses a mining cable with a fault early warning function and an early warning method, and relates to the technical field of cables. The cable comprises a cable main body, wherein the cable main body is used for underground mine power transmission and signal transmission, and the cable main body is sequentially and coaxially provided with a conductor, an insulating layer and a sheath from inside to outside. According to the invention, through the integrated design of the distributed miniature sensing units and the cable main body, the problem that the traditional mining cable lacks real-time state monitoring capability is solved, the miniature sensing units are embedded between the cable insulating layer and the sheath at intervals, and can synchronously acquire multidimensional operation parameters such as temperature, strain, partial discharge and the like, so that real-time sensing of potential faults such as cable insulation aging, local overheating, mechanical damage and the like is realized, a passive mode of checking after the traditional faults is broken, early warning signals are sent in advance, safety accidents caused by sudden faults such as short circuit, leakage and the like are effectively avoided, and powerful guarantee is provided for life safety and production order of underground mine operators.

Inventors

  • JIANG AIXIANG
  • JIANG ZIXUAN
  • JIANG MING

Assignees

  • 江苏泰祥电线电缆有限公司

Dates

Publication Date
20260505
Application Date
20260127

Claims (10)

  1. 1. The utility model provides a mining cable that possesses trouble early warning function, includes cable body (1), its characterized in that: The cable main body (1) is used for underground mine power transmission and signal transmission, and the cable main body (1) is sequentially and coaxially provided with a conductor (11), an insulating layer (12) and a sheath (13) from inside to outside; The miniature sensing units (14) are embedded between the insulating layer (12) and the sheath (13) in a distributed mode, are arranged at intervals along the length direction of the cable main body (1) and are used for collecting the running state information of the cable in real time; the miniature sensing unit (14) is made of flexible packaging materials matched with the cable main body (1), original flexibility and mechanical strength of the cable are guaranteed, and the miniature sensing unit (14) is electrically connected or in signal connection with a data transmission module and used for transmitting acquired state information to a remote monitoring terminal.
  2. 2. The mining cable with fault pre-warning function according to claim 1, wherein the miniature sensing unit (14) comprises at least one group of functional sensors, and the functional sensors are selected from one or more combinations of fiber bragg grating sensors and nano-composite sensors.
  3. 3. The mining cable with fault pre-warning function according to claim 1, wherein when the functional sensor in the miniature sensing unit (14) comprises a fiber bragg grating sensor, the fiber bragg grating sensor is used for collecting temperature parameters and strain parameters of the cable main body (1), and when the functional sensor comprises a nanocomposite sensor, the nanocomposite sensor is used for collecting partial discharge parameters of the cable main body (1).
  4. 4. The mining cable with the fault early warning function according to claim 1, wherein the arrangement interval of the miniature sensing units (14) along the length direction of the cable main body (1) is 50-60cm, and all the miniature sensing units (14) pre-store unique position identification information.
  5. 5. The mining cable with the fault early warning function according to claim 1, wherein the conductor (11) is formed by twisting a plurality of strands of copper conductors, the insulating layer (12) is made of flame-retardant crosslinked polyethylene, and the sheath (13) is made of neoprene.
  6. 6. The mining cable with the fault early warning function according to claim 1, wherein the data transmission module is integrated at the end part of the cable main body (1) or an external matched device, and the transmission process adopts encryption protocol processing to ensure the data transmission safety.
  7. 7. The method for early warning the mining cable with the fault early warning function according to any one of claims 1 to 6, which is characterized by comprising the following steps: S1, acquiring running state information, wherein a micro sensing unit (14) acquires one or more running state information of temperature, strain and partial discharge of a cable main body (1) in real time according to a preset period; s2, preprocessing data, namely performing noise reduction, filtering and standardization processing on the collected running state information, and improving the accuracy of the data; S3, data transmission, wherein the preprocessed information is transmitted to a remote monitoring terminal in an encrypted manner through a data transmission module; s4, carrying out exception analysis, wherein the remote monitoring terminal compares the received information with a preset threshold value and judges whether the data exceeds the threshold value range; s5, early warning positioning, if abnormality is judged to exist, calculating and determining the accurate position of the fault point by combining the position identification information of the micro sensing unit (14) corresponding to the abnormal data; and S6, early warning output, generation of fault early warning information and fault point positioning results, and pushing to the appointed terminal.
  8. 8. The method for early warning a mining cable with a fault early warning function according to claim 7, wherein the preset period in the step S1 is 1-30 minutes, and the method can be adaptively adjusted according to the complexity of the underground environment and the load condition of the cable.
  9. 9. The method for pre-warning the mining cable with the fault pre-warning function according to claim 7, wherein the preset threshold in the step S4 comprises a temperature threshold, a strain threshold and a local discharge capacity threshold, and the thresholds are calibrated in advance according to the type of the cable, the rated parameter and the underground environment parameter and stored in the remote monitoring terminal.
  10. 10. The method for early warning the mining cable with the fault early warning function according to claim 7, wherein in the step S6, the early warning information is synchronously pushed to the underground operation terminal while being pushed to the remote monitoring terminal, so that the fault type, the risk level and the fault point position are clearly marked, and the staff is guided to overhaul in time.

Description

Mining cable with fault early warning function and early warning method Technical Field The invention belongs to the technical field of cables, and particularly relates to a mining cable with a fault early warning function and an early warning method. Background The mining cable is used as core supporting equipment of mining industries of coal mines and various metal and nonmetal mines and bears key tasks such as power transmission, signal transmission, equipment control and safety monitoring. The mine underground environment is extremely complex, the problems of high humidity, high dust, strong mechanical friction, acid-base corrosion and the like exist, electromagnetic interference, narrow space and potential fire risks are accompanied, the mine cable is required to have severe special performance, the requirements of wear resistance, corrosion resistance, electromagnetic interference resistance, mechanical impact resistance and the like are met besides the core flame retardant property, and all products are required to pass through the strict authentication of the national mine safety supervision department, so that the running stability and the running safety under the severe environment are ensured. In the underground environment with high humidity, dust, mechanical impact and strong electromagnetic interference, the mine cable is easy to cause faults such as short circuit, electric leakage and the like due to insulation aging, local overheating, mechanical damage and the like, the traditional cable lacks real-time state monitoring capability, and the faults are easy to burst and difficult to position in time, so that production stopping and even safety accidents can be caused. Therefore, the mining cable with the fault early warning function and the early warning method are provided for solving the problems. Disclosure of Invention The invention aims to provide a mining cable with a fault early warning function and an early warning method, and solves the problems that the mining cable in the prior art lacks real-time state monitoring capability, faults are sudden and difficult to locate in time, and production stoppage and even safety accidents can be caused by the cooperation of a cable main body and a miniature sensing unit. In order to solve the technical problems, the invention is realized by the following technical scheme. The invention relates to a mining cable with a fault early warning function, which comprises a cable main body, The cable main body is used for underground mine power transmission and signal transmission, and is sequentially and coaxially provided with a conductor, an insulating layer and a sheath from inside to outside; The miniature sensing units are embedded between the insulating layer and the sheath in a distributed manner, are arranged at intervals along the length direction of the cable main body and are used for collecting the running state information of the cable in real time; the miniature sensing unit adopts the flexible packaging material with cable main part adaptation, ensures original pliability and the mechanical strength of cable, and miniature sensing unit electricity is connected or signal connection has data transmission module for with the state information transmission of gathering to the remote monitoring terminal. The invention further provides that the miniature sensing unit comprises at least one group of functional sensors, and the functional sensors are selected from one or more combinations of fiber bragg grating sensors and nano composite sensors. The invention is further arranged that when the functional sensor in the miniature sensing unit comprises a fiber bragg grating sensor, the fiber bragg grating sensor is used for collecting temperature parameters and strain parameters of the cable main body, and when the functional sensor comprises a nano composite sensor, the nano composite sensor is used for collecting partial discharge parameters of the cable main body. The invention is further arranged that the arrangement interval of the micro sensing units along the length direction of the cable main body is 50-60cm, and all the micro sensing units pre-store unique position identification information. The invention is further provided that the conductor is formed by twisting a plurality of strands of copper conductors, the insulating layer is made of flame-retardant crosslinked polyethylene, and the sheath is made of neoprene. The invention further provides that the data transmission module is integrated at the end part of the cable main body or an external matched device, and the transmission process adopts encryption protocol processing, so that the data transmission safety is ensured. A mining cable early warning method with a fault early warning function comprises the following steps: S1, acquiring running state information, wherein a micro sensing unit acquires one or more running state information of temperature, strain and partial discharge