A cable with built-in monitoring function

Abstract

The utility model discloses a built -in monitoring function cable, including a plurality of inner core, a plurality of the inner core middle is provided with monitoring line, and a plurality of inner core outside is equipped with the filling layer, the filling layer outer surface is provided with the wrapping tape, the wrapping tape outer surface is provided with the middle insulating layer, the middle insulating layer outer surface is provided with the outer shield layer, the outer shield layer outer surface is provided with the armour layer, the armour layer outer surface is provided with the insulation monitoring layer. In the utility model, setting up inner core, monitoring line, first protective layer, outer shield layer, armour layer and second protective layer, through setting up temperature monitoring line outside the conductor, utilizing monitoring line real -time monitoring conductor layer temperature, can find the temperature abnormal situation in the cable operation process in time. Once temperature exceeds the set threshold value, the monitoring system can immediately send the alarm, reminds the staff to take measures, avoids the fire and so on accident caused by cable overheating, has improved the security of cable operation greatly.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a cable with built-in monitoring function. Background Technology

[0002] Currently, power cables typically consist of a conductor, insulation layer, shielding layer, and outer sheath. The conductor is often made of copper or aluminum, while the insulation layer commonly uses cross-linked polyethylene or ethylene propylene rubber to improve electrical performance and heat resistance. The shielding layer is primarily used to distribute the electric field evenly, while the outer sheath provides mechanical and environmental protection. Some high-voltage cables also have a metallic armor layer to enhance tensile strength.

[0003] However, existing cables have the following drawbacks: Firstly, they lack real-time temperature monitoring. During prolonged high-load operation, traditional cables are prone to localized overheating due to the heat generated by current flow. Existing cables typically lack built-in temperature monitoring devices, making it impossible to detect abnormal temperatures in a timely manner. Excessive temperature can lead to serious accidents such as fires, posing significant safety hazards. Secondly, the cable insulation layer may be damaged over time due to external wear and aging. Damage to the insulation layer not only affects the normal use of the cable but may also lead to leakage accidents, threatening personal safety and the stable operation of equipment. Traditional cables cannot provide real-time monitoring and early warning of insulation damage; problems can only be detected through periodic manual inspections, which is inefficient and delayed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cable with built-in monitoring function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cable with built-in monitoring function, comprising multiple inner cores, a monitoring line disposed in the middle of the multiple inner cores, and a filling layer disposed on the outside of the multiple inner cores. A wrapping tape is disposed on the outer surface of the filling layer, a middle insulation layer is disposed on the outer surface of the wrapping tape, an outer shielding layer is disposed on the outer surface of the middle insulation layer, an armor layer is disposed on the outer surface of the outer shielding layer, an insulation monitoring layer is disposed on the outer surface of the armor layer, and an outer insulation layer is disposed on the outer surface of the insulation monitoring layer.

[0006] Furthermore, the inner core includes a conductor, and an inner shielding layer is provided on the outer surface of the conductor, and an inner insulating layer is provided on the outer surface of the inner shielding layer.

[0007] Furthermore, the inner insulation layer, middle insulation layer, and outer insulation layer are all made of cross-linked polyethylene.

[0008] Furthermore, both the inner and outer shielding layers are made of semi-conductive materials.

[0009] Furthermore, the monitoring line uses temperature-sensing optical fiber, which is spirally wound or arranged in parallel along the cable axis to monitor the temperature distribution of the entire line in real time.

[0010] Furthermore, the insulating monitoring layer consists of a conductive fiber braided mesh and an alarm signal line.

[0011] The beneficial effects of this utility model are:

[0012] 1. In use, this utility model relates to a cable with built-in monitoring function, comprising an inner core, monitoring wires, a first protective layer, an outer shielding layer, an armor layer, and a second protective layer. By installing temperature monitoring wires outside the conductor, the temperature of the conductor layer can be monitored in real time, enabling timely detection of temperature anomalies during cable operation. Once the temperature exceeds a set threshold, the monitoring system can immediately issue an alarm, reminding personnel to take measures to prevent accidents such as fires caused by cable overheating, greatly improving the safety of cable operation.

[0013] 2. In use, this utility model provides a cable with built-in monitoring functionality. An insulation monitoring layer is provided, and the conductive fiber braided mesh of the insulation monitoring layer can monitor the integrity of the outer insulation layer in real time. When damage occurs to the outer insulation layer, the monitoring system can quickly detect changes in resistance and issue an early warning. This changes the outdated method of relying solely on manual inspection to detect damage to the outer insulation layer in traditional cables. It achieves real-time monitoring and timely early warning of outer insulation layer damage, effectively reducing the probability of leakage accidents and ensuring personal safety and stable equipment operation. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 : Overall perspective view of this utility model;

[0016] Figure 2 : Overall sectional view of this utility model.

[0017] The attached figures are labeled as follows:

[0018] 1. Inner core; 101. Conductor; 102. Inner shielding layer; 103. Inner insulation layer; 2. Monitoring line; 3. Filler layer; 4. Wrapping tape; 5. Middle insulation layer; 6. Outer shielding layer; 7. Armoring layer; 8. Insulation monitoring layer; 9. Outer insulation layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-2 As shown, a cable with built-in monitoring function is disclosed, comprising multiple inner cores 1, a monitoring line 2 disposed in the middle of the multiple inner cores 1, and a filling layer 3 disposed on the outside of the multiple inner cores 1. A wrapping tape 4 is disposed on the outer surface of the filling layer 3, a middle insulation layer 5 is disposed on the outer surface of the wrapping tape 4, an outer shielding layer 6 is disposed on the outer surface of the middle insulation layer 5, an armor layer 7 is disposed on the outer surface of the outer shielding layer 6, an insulation monitoring layer 8 is disposed on the outer surface of the armor layer 7, and an outer insulation layer 9 is disposed on the outer surface of the insulation monitoring layer 8.

[0021] The inner core 1 includes a conductor 101, and an inner shielding layer 102 is provided on the outer surface of the conductor 101, and an inner insulating layer 103 is provided on the outer surface of the inner shielding layer 102.

[0022] In this embodiment, the inner shielding layer 102 can shield the conductor 101, and the inner insulation layer 103 can provide individual insulation for each conductor 101.

[0023] The inner insulation layer 103, the middle insulation layer 5, and the outer insulation layer 9 are all made of cross-linked polyethylene.

[0024] Cross-linked polyethylene (XLPE), used as a cable insulation layer, forms a three-dimensional network structure through molecular chain cross-linking, which significantly improves its heat resistance, mechanical strength, and electrical performance. It can operate at 90℃ for a long time and withstand high voltage electric fields. It has excellent dielectric strength, low dielectric loss, and resistance to environmental stress cracking, making it an ideal insulation material for medium and high voltage cables.

[0025] Both the inner shielding layer 102 and the outer shielding layer 6 are made of semi-conductive materials.

[0026] The semiconductor shielding layer uniformly distributes the electric field on the surface of the conductor 101 and the insulation layer in the cable, preventing partial discharge and corona generation. Its resistivity is between that of the conductor 101 and the insulator. By tightly wrapping the interface between the conductor 101 and the insulation, it eliminates air gaps, improves electric field distortion, enhances interface bonding strength, and suppresses space charge accumulation.

[0027] Monitoring line 2 uses temperature-sensing optical fiber, which is spirally wound or arranged in parallel along the cable axis to monitor the temperature distribution of the entire line in real time.

[0028] The temperature-sensing optical fiber is tightly bonded to the surface of the inner core 1, enabling it to sense real-time temperature changes in the conductor 101 of the inner core 1. The signal transmission line transmits the temperature signal collected by the temperature-sensing optical fiber to external monitoring equipment.

[0029] The insulation monitoring layer 8 consists of a conductive fiber braided mesh and an alarm signal line.

[0030] Conductive fiber braided mesh is evenly distributed on the outside of the insulation layer. When the insulation layer is damaged, the external environment comes into contact with the conductive fiber braided mesh, causing a change in its resistance value. An alarm signal line transmits the resistance change signal to the monitoring system. The monitoring system determines whether the insulation layer is damaged based on a preset threshold and issues a warning signal in a timely manner.

[0031] Working principle: This cable transmits electrical energy through the inner core conductor 101. A temperature-sensing optical fiber monitors the temperature changes of conductor 101 in real time, and the signal is transmitted to external equipment. The conductive fiber mesh of the insulation monitoring layer 8 senses damage to the outer insulation layer 9, and changes in resistance trigger an alarm. Multi-layer cross-linked polyethylene insulation ensures heat resistance and electrical strength, while the armor layer 7 provides mechanical protection, enabling comprehensive real-time monitoring of the cable's operating status and fault early warning.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cable with built-in monitoring function, comprising multiple inner cores (1), characterized in that: A monitoring line (2) is provided in the middle of multiple inner cores (1), and a filling layer (3) is provided on the outside of multiple inner cores (1). A wrapping tape (4) is provided on the outer surface of the filling layer (3). A middle insulation layer (5) is provided on the outer surface of the wrapping tape (4). An outer shielding layer (6) is provided on the outer surface of the middle insulation layer (5). An armor layer (7) is provided on the outer surface of the outer shielding layer (6). An insulation monitoring layer (8) is provided on the outer surface of the armor layer (7). An outer insulation layer (9) is provided on the outer surface of the insulation monitoring layer (8). The insulation monitoring layer (8) is composed of a conductive fiber braided mesh and an alarm signal line.

2. The cable with built-in monitoring function according to claim 1, characterized in that: The inner core (1) includes a conductor (101), and an inner shielding layer (102) is provided on the outer surface of the conductor (101), and an inner insulating layer (103) is provided on the outer surface of the inner shielding layer (102).

3. The cable with built-in monitoring function according to claim 2, characterized in that: The inner insulation layer (103), the middle insulation layer (5) and the outer insulation layer (9) are all made of cross-linked polyethylene.

4. A cable with built-in monitoring function according to claim 2, characterized in that: Both the inner shielding layer (102) and the outer shielding layer (6) are made of semi-conductive materials.

5. A cable with built-in monitoring function according to claim 1, characterized in that: The monitoring line (2) uses a temperature-measuring optical fiber, which is spirally wound or arranged in parallel along the cable axis to monitor the temperature distribution of the entire line in real time.

Images