A green and environmentally friendly composite cable

Abstract

The present invention relates to a green and environment-friendly composite cable applied in the field of cables, comprising a cable body consisting of an outer protective layer, an environment-friendly insulating layer arranged on the inner side of the outer protective layer, and a conductive core layer arranged on the inner side of the environment-friendly insulating layer. By adopting the above-mentioned air strip set and pressure connector, during the application of the cable body, on the one hand, the effect of air pressure buffering can be utilized to promote the mechanical strength of the cable body, increase its pressure resistance and durability during the application process, and on the other hand, under the effect of air pressure buffering, the flexibility of the cable body can be promoted, so that when the cable body is laid in an irregular space, it can be effectively adapted to the spatial form, and under the dual effects of air pressure buffering and airflow conduction, the laying bending position can be buffered and maintained, thereby effectively improving the service life of the cable body, reducing the frequency of replacement and maintenance, reducing the loss rate of the cable body, and further promoting the green and environmental protection effect of the cable body.

Description

Technical Field

[0001] The present invention relates to a composite cable, in particular to a green and environment-friendly composite cable used in the field of cables. Background Art

[0002] Composite cable is a cable that integrates multiple transmission media and can transmit power and data signals at the same time. Green composite cable is a cable that meets environmental standards and is designed to reduce pollution and harm to the environment. This cable is designed with halogen-free, low-smoke, low-toxin, and heavy metal-free materials to ensure that it has a low environmental impact during production, use, and even disposal.

[0003] The structure of green and environmentally friendly composite cables mainly includes environmentally friendly insulation materials, conductive core wires and external protective layers. This structural design not only ensures the basic transmission function of the cable, but also emphasizes minimizing the impact on the environment during production and use.

[0004] Although the environmentally friendly insulating materials of the green and environmentally friendly composite cables in the prior art, such as polypropylene, have good insulation and environmental protection, their mechanical strength and flexibility still need to be improved to promote the durability of the green and environmentally friendly composite cables in irregular spaces or outdoor exposed environments. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to improve the mechanical strength and flexibility of the green and environmentally friendly composite cable to promote its durability in irregular spaces or outdoor exposed environments.

[0006] In order to solve the above problems, the present invention provides a green and environmentally friendly composite cable, including a cable body composed of an external protective layer, an environmentally friendly insulating layer arranged on the inner side of the external protective layer, and a conductive core layer arranged on the inner side of the environmentally friendly insulating layer. A plurality of air strip sets connected end to end along the axial direction of the cable body are also arranged between the external protective layer and the environmentally friendly insulating layer. A pressure connecting plate is fixedly connected between two adjacent air strip sets, a plurality of connecting air holes are opened on the pressure connecting plate, and a pressure connecting flap is fixedly connected in the connecting air hole.

[0007] In the above-mentioned green and environmentally friendly composite cable, the dual functions of air pressure buffering and air flow conduction formed by the air strip set and the pressure connecting plate can effectively improve the mechanical strength and flexibility of the cable body, promote its durability in irregular spaces and outdoor exposure environments, reduce the damage rate of the cable body, and promote its green and environmental protection function.

[0008] As a supplement to the present application, a buffer air cavity is provided in the arc-shaped air strip, and two adjacent buffer air cavities along the circumferential direction of the cable body are connected through an annular guide tube, and two adjacent buffer air cavities along the axial direction of the cable body are connected through a pressure connecting plate.

[0009] As a further improvement of the present application, the air strip set is composed of a plurality of arc-shaped air strips fixedly connected along the circumferential direction of the cable body, an annular guide tube is fixedly connected between two adjacent arc-shaped air strips, and a guide flap is fixedly connected to the inner wall of the annular guide tube.

[0010] As a further improvement of the present application, electromagnetic repulsion plates are fixedly connected to the two inner walls of the buffer air cavity along the radial direction of the cable body, a trigger column is fixedly connected to one end of the two electromagnetic repulsion plates, the input end of the electromagnetic repulsion plates is connected to a pressure resistance unit, the output end of the trigger column is connected to a high-voltage trigger unit, and the input end of the pressure resistance unit and the output end of the high-voltage trigger unit are both connected to the signal of the cable status processing unit in the cable status monitoring system mounted on the cable maintenance platform.

[0011] As a further improvement of the present application, the air strip set is made of magnetically isolating elastic material.

[0012] As a further improvement of the present application, the sum of the heights of the two trigger posts is greater than the width of the pressure contact piece.

[0013] As another improvement of the present application, the input end of the cable status processing unit is also connected to the pressure detection unit inside the set, and the input end of the pressure detection unit inside the set is connected to the signal of the pressure detection head set in the buffer air cavity, and the pressure detection head is set in any buffer air cavity in the same air strip set.

[0014] As another improved supplement of the present application, the input end of the cable status processing unit is also connected to a cable parameter acquisition unit, and the output end of the cable status processing unit is also connected to a monitoring display unit and an alarm unit, the input end of the cable parameter acquisition unit is connected to the cable maintenance platform signal, the output end of the monitoring display unit is connected to the display signal on the cable maintenance platform, and the output end of the alarm unit is connected to the alarm signal set on the cable maintenance platform.

[0015] As another improvement of the present application, the buffer gas cavity is filled with an inert gas, and the filling amount saturation is 70% to 80%.

[0016] In summary, through the arrangement of the air strip set and the pressure connecting piece, during the application of the cable body, on the one hand, the effect of air pressure buffering can be utilized to promote the mechanical strength of the cable body, increase its pressure resistance and durability during the application process, and form an air flow conduction effect when the local pressure is too large, further buffer the local compressed position, and promote its durability in the outdoor exposure environment; on the other hand, under the effect of air pressure buffering, the flexibility of the cable body can be promoted, so that the cable body can be effectively adapted to the spatial form when laid in an irregular space, and under the dual effects of air pressure buffering and air flow conduction, the laying bending position can be buffered and maintained, effectively improving the durability of the cable body when laid in an irregular space, effectively improving the service life of the cable body, reducing the frequency of replacement and maintenance, reducing the loss rate of the cable body, and further promoting the green environmental protection effect of the cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axonometric diagram of the cable body of the first and second embodiments of the present application;

[0018] Figure 2 This is a control logic diagram of a cable status monitoring system according to the second embodiment of the present application;

[0019] Figure 3 Exploded diagram of the cable body of the first and second embodiments of the present application;

[0020] Figure 4 It is a left side cross-sectional view of the cable body of the first and second embodiments of the present application;

[0021] Figure 5 For the first and second embodiments of this application Figure 4 A partial enlarged view of the middle part;

[0022] Figure 6 Axonometric cross-sectional views of the cable body of the first and second embodiments of the present application;

[0023] Figure 7 It is an axonometric cross-sectional view of the cable body of the first and second embodiments of the present application;

[0024] Figure 8 This is a rear side view of the cable body of the second embodiment of the present application when used in an irregular space;

[0025] Fig. 9 This is a diagram of the compressed state of the gas strip sheath assembly when the cable body according to the second embodiment of the present application is used in an irregular space.

[0026] Description of the numbers in the figure:

[0027] 1 cable body, 11 external protective layer, 12 environmentally friendly insulation layer, 13 conductive core layer, 2 gas strip set, 21 buffer air cavity, 22 arc-shaped gas strip, 3 pressure lead sheet, 31 pressure lead flap, 4 annular guide tube, 41 guide flap. DETAILED DESCRIPTION

[0028] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0029] The first implementation method:

[0030] Figure 1 and Figure 3 - Fig. 9 A green and environmentally friendly composite cable is shown, comprising a cable body 1 consisting of an external protective layer 11, an environmentally friendly insulating layer 12 arranged on the inner side of the external protective layer 11, and a conductive core layer 13 arranged on the inner side of the environmentally friendly insulating layer 12. A plurality of air strip sets 2 connected end to end along the axial direction of the cable body 1 are also arranged between the external protective layer 11 and the environmentally friendly insulating layer 12. A pressure lead sheet 3 is fixedly connected between two adjacent air strip sets 2. A plurality of lead air holes are opened on the pressure lead sheet 3. A pressure lead flap 31 is fixedly connected in the lead air hole. Through the arrangement of the air strip set 2 and the pressure lead sheet 3, during the application of the cable body 1, the effect of air pressure buffering can be utilized to promote the mechanical strength of the cable body 1 and increase its application The pressure resistance and durability during the process can also form an airflow conduction effect when the local pressure is too large, further buffer the local compressed position, and promote its durability in outdoor exposure environment. On the other hand, it can promote the flexibility of the cable body 1 under the effect of air pressure buffering, so that the cable body 1 can be effectively adapted to the spatial form when laid in an irregular space, and under the dual effects of air pressure buffering and airflow conduction, the laying bending position is buffered and maintained, effectively improving the durability of the cable body 1 when laid in an irregular space, effectively improving the service life of the cable body 1, reducing the frequency of replacement and maintenance, reducing the loss rate of the cable body 1, and further promoting the green environmental protection effect of the cable body 1.

[0031] Figure 1 and Figure 3 - Fig. 9It is shown that a buffer air cavity 21 is opened in the arc-shaped air strip 22, and two adjacent buffer air cavities 21 along the circumferential direction of the cable body 1 are connected by an annular guide tube 4, and two adjacent buffer air cavities 21 along the axial direction of the cable body 1 are connected by a pressure connecting plate 3. The setting of the buffer air cavity 21 and the annular guide tube 4 can preferentially promote the annular circulation of the airflow when the cable body 1 is compressed or bent, thereby promoting the airflow buffering and pressure unblocking effects at the position where the cable body 1 is compressed or deformed, effectively increasing the durability and applicability of the cable body 1, and can cooperate with the conduction of the pressure connecting plate 3 along the axial direction to further promote the buffering and unblocking effects of the internal and external pressures of the cable body 1, effectively reducing the pressure loss of the cable body 1 by increasing the pressure conduction area, improving the mechanical strength of the cable body 1, and improving the durability of the cable body 1.

[0032] Figure 1 and Figure 3 - Fig. 9 It is shown that the air strip set 2 is composed of a plurality of arc-shaped air strips 22 fixedly connected along the circumferential direction of the cable body 1, an annular guide tube 4 is fixedly connected between two adjacent arc-shaped air strips 22, and a guide flap 41 is fixedly connected to the inner wall of the annular guide tube 4. The split setting of the arc-shaped air strips 22 can not only reduce the difficulty of preparation thereof, but also increase the mechanical strength and flexibility of the cable body 1, promote the durability and applicability of the cable body 1, expand the application scope of the cable body 1, and promote the economic benefits of the cable body 1.

[0033] It should be noted that the pressure guide flap 31 and the guide flap 41 are both circular elastic sheets, and a cross slot is provided on the elastic sheet, which can cause the cross slot to deform when compressed, thereby forming a conduction effect, and the stiffness coefficient of the pressure guide flap 31 is limited to be greater than the stiffness coefficient of the guide flap 41, that is, the pressure required for the guide flap 41 to produce deformation and conduction is less than the pressure required for the pressure guide flap 31 to produce deformation and conduction.

[0034] Figure 1 and Figure 3 - Fig. 9 It is shown that the buffer air cavity 21 is filled with inert gas, and the filling amount saturation is 70% to 80%. The setting of the unsaturated inert gas filling amount can ensure that it has a certain buffering effect while also effectively ensuring its supporting strength and the mechanical strength of the cable body 1. The setting of the inert gas can also play a role in heat dissipation and adsorption, and promote heat dissipation. When the cable body 1 is caught in a fire, the inert gas can be emitted to dilute the oxygen content around the cable body 1, thereby effectively suppressing the spread of fire, effectively avoiding and preventing the combustion of the cable body 1, playing a good protective role, further reducing the gas emissions generated by the combustion of the cable body 1, and promoting the green environmental protection effect of the cable body 1.

[0035] Figure 1 and Figure 3 - Fig. 9 It is shown that when the cable body 1 is used in an outdoor exposed environment, if the outer end of the cable body 1 is subjected to external pressure such as trampling, heavy objects, rolling, etc., the pressure will be transmitted to the gas strip set 2 through the external protective layer 11, and the arc-shaped gas strip 22 that is subjected to local pressure will, after being compressed, cause the inert gas in its buffer air cavity 21 to transmit pressure to the four walls, and then the guide flap 41 will be turned on under the pressure squeeze, and the inert gas will flow through the guide flap 41 and the annular guide tube 4 to the adjacent buffer air cavity 21 that is not subjected to external pressure, playing the role of annular air flow pressure distribution, and changing the direction of vertical pressure transmission through the gas circulation uniformity, thereby reducing the damage caused by the pressure to the environmentally friendly insulation layer 12 and the conductive core layer 13 If the pressure is too high or continues to increase, the inert gas in the buffer air cavity 21 is continuously pressurized. After the multiple arc-shaped air strips 22 on the same air strip set 2 are all turned on, the pressure continues to be transmitted, which will cause the pressure guide flap 31 to be turned on, and then the inert gas will flow into the buffer air cavity 21 in the axial direction, further expanding the pressure distribution range, reducing the damage caused by pressure concentration, and ensuring the safety of the cable body 1. Under the isolation of the inert gas in the buffer air cavity 21, it can effectively avoid the damage of the environmental insulation layer 12 and the arc-shaped air strip 22 caused by external pressure, and can also play a supporting role under the action of the annular airflow pressure distribution, thereby improving the mechanical strength of the cable body 1 and promoting the durability of the cable body 1.

[0036] When the cable body 1 is used in an irregular space, during the laying and bending process of the cable body 1, the small radius bending on the inner side will form a stress extrusion effect on the environmentally friendly insulating layer 12 and the conductive core layer 13. The setting of the arc-shaped gas strip 22 will form a ring-shaped conduction through the inert gas in the buffer air cavity 21 breaking through the guide flap 41 during bending and extrusion. On the one hand, it can decompose the extrusion force at the small radius bend, and on the other hand, it can increase the protection of the large radius bend during the gas flow. The inert gas in the buffer air cavity 21 breaks through the pressure guide flap 31 to flow in the axial direction of the cable body 1, which plays an effective pressure relief role, avoids the damage of the environmentally friendly insulating layer 12 and the conductive core layer 13 caused by the concentration of pressure during continuous use, and can effectively reduce the bending resistance of the cable body 1 through the action of air flow, promote the flexibility of the cable body 1, and enable the cable body 1 to be effectively used in irregular spaces.

[0037] Moreover, during the application of the cable body 1, the inert gas in the buffer air cavity 21 can also adsorb the heat generated by the conductive core layer 13, and after the inert gas in a single buffer air cavity 21 is heated and continuously expands to increase its pressure in the buffer air cavity 21, it can still break through the guide flap 41 and the pressure guide flap 31 to generate gas flow, thereby achieving auxiliary heat dissipation, avoiding local overheating of the cable body 1, and effectively improving the safety of the application of the cable body 1. If a fire occurs during the application of the cable body 1, after the cable body 1 is damaged, the gas strip set 2 is continuously damaged, so that the inert gas in the buffer air cavity 21 is released. On the one hand, the inert gas can play an insulating role, and on the other hand, it can dilute the oxygen concentration around the cable body 1 after being released, thereby effectively suppressing and blocking the fire, further increasing the safety of the application of the cable body 1 and promoting its green environmental protection.

[0038] Second implementation method:

[0039] Figure 1 - Fig. 9 A green and environmentally friendly composite cable is shown, in which the two inner walls of the buffer air cavity 21 along the radial direction of the cable body 1 are fixedly connected with electromagnetic repulsion plates, and a trigger column is fixedly connected to one end of the two electromagnetic repulsion plates. The input end of the electromagnetic repulsion plate is connected to a pressure resistance unit, and the output end of the trigger column is connected to a high-voltage trigger unit. The input end of the pressure resistance unit and the output end of the high-voltage trigger unit are both connected to the cable status processing unit signal connection in the cable status monitoring system carried on the cable maintenance platform. The setting of the pressure resistance unit can effectively increase the functionality and intelligence of the cable body 1, and can be adjusted according to the application environment of the cable body 1. The applicability adjusts the mechanical strength and flexibility of the gas strip set 2, promotes the application scope of the cable body 1, and the setting of the electromagnetic repulsion plate can also effectively ensure the spatial thickness of the buffer air cavity 21, to avoid direct damage to the environmentally friendly insulation layer 12 and the conductive core layer 13 due to the compression and crushing of the arc-shaped gas strip 22, thereby forming a further protective barrier for the cable body 1. The setting of the high-voltage trigger unit can be triggered after the two trigger columns located in the same buffer air cavity 21 are abutted, thereby realizing the monitoring of the local pressure position of the cable body 1, effectively realizing the detection of the application safety of the cable body 1, and assisting in maintenance.

[0040] Figure 1 - Fig. 9 It is shown that the air strip set 2 is made of magnetically isolating elastic material. The arrangement of the magnetically isolating material can ensure the effectiveness of the electromagnetic repulsion plate in the buffer air cavity 21 while also ensuring the communication and data transmission performance of the cable body 1, effectively avoiding interference of the magnetic field on the cable body 1 and ensuring the effectiveness of the operation of the cable body 1.

[0041] Figure 4 and Figure 5It is shown that the sum of the heights of the two trigger columns is greater than the width of the pressure lead-in plate 3. The limitation of the height of the trigger columns can prevent the pressure lead-in plate 3 from being damaged due to the subsequent damage of the cable body 1 or abnormal pressure causing the trigger columns to abut. This effectively ensures the function of gas drainage and conduction, forms a continuous evacuation pressure through gas circulation, and reduces the degree of damage to the cable body 1.

[0042] Figure 1 - Fig. 9 It is shown that the input end of the cable status processing unit is also connected to the pressure detection unit in the set, and the input end of the pressure detection unit in the set is connected to the signal of the pressure detection head set in the buffer air cavity 21, and the pressure detection head is set in any buffer air cavity 21 in the same air strip set 2. The setting of the pressure detection unit can effectively assist maintenance personnel to detect the application status of the cable body 1, especially for the cable body 1 laid in an irregular space. It can effectively predict the pressure state of the cable body 1 according to the change of pressure data, and can timely judge the abnormal problem and deal with the abnormality when the cable body 1 has an abnormality, so as to ensure the safety of the application of the cable body 1.

[0043] Figure 2 It is shown that the input end of the cable status processing unit is also connected to a cable parameter acquisition unit, and the output end of the cable status processing unit is also connected to a monitoring display unit and an alarm unit. The input end of the cable parameter acquisition unit is connected to the cable maintenance platform signal, the output end of the monitoring display unit is connected to the display signal on the cable maintenance platform, and the output end of the alarm unit is connected to the alarm signal arranged on the cable maintenance platform. The detection and performance effects of the cable body 1 can be effectively combined with the cable maintenance platform, further promoting the intelligent function of the cable body 1, effectively realizing the unmanned monitoring and management function of the cable body 1, and reducing the difficulty of maintenance of the cable body 1.

[0044] Figure 1 - Fig. 9It is shown that when the cable body 1 is used in conjunction with the cable maintenance platform, the cable maintenance platform will input the basic parameter data of this section of the cable body 1 to the cable parameter acquisition unit, including the wire diameter of the cable body 1, the laying bending shape, the filling amount saturation of the inert gas in the buffer air cavity 21, the compressive state limit state and other data, and then the cable parameter acquisition unit transmits the cable data to the cable state processing unit. After receiving the data, the cable state processing unit transmits the electromagnetic resistance control data to the pressure resistance unit, so that the pressure resistance unit controls the current delivered to the electromagnetic repulsion plate, so that the two electromagnetic repulsion plates located in the same buffer air cavity 21 produce a stable electromagnetic repulsion effect, and the inert gas in the auxiliary buffer air cavity 21 ensures the support strength of the buffer air cavity 21. When the cable body 1 is used in an outdoor exposed environment, the current passed through the electromagnetic repulsion plate can be appropriately increased to make its electromagnetic repulsion larger, which can have a certain resistance effect and increase the mechanical strength of the cable body 1. When the cable body 1 is used in an irregular space, the current passed through the electromagnetic repulsion plate can be appropriately reduced to make its electromagnetic repulsion smaller. This can not only ensure the supporting effect, avoid the problem of large flow of inert gas in the buffer air cavity 21 due to the small bending angle of the cable body 1, resulting in a small thickness of the arc air strip 22 at this time, and ensure the protective effect of the arc air strip 22, but also increase the flexibility of the cable body 1 by reducing the deformation resistance of the cable body 1, promote the freedom of application of the cable body 1 in irregular spaces, and play an effective applicability effect.

[0045] Then, during the continuous use of the cable body 1, the pressure detection head located in the buffer air cavity 21 transmits the detected pressure data to the pressure detection unit in the set, and then the pressure detection unit in the set transmits the pressure data to the cable status processing unit. The cable status processing unit judges the status of the cable body 1 according to the pressure data in each gas strip set 2, the laying status of the cable body 1 and the pressure data change in the buffer air cavity 21, and judges whether the cable body 1 is damaged, whether it is under pressure, etc., and when the cable body 1 is in good condition, the cable status processing unit will transmit the status data of the cable body 1 to the display of the cable maintenance platform through the monitoring display unit to provide data reference for maintenance personnel;

[0046] If the pressure data of most of the air strip sets 2 remain basically unchanged, but a few pressure data keep decreasing, then it is judged that the arc-shaped air strip 22 at the position where the pressure data keeps decreasing is broken, so the cable status processing unit controls the alarm of the cable maintenance platform through the alarm unit to start, and transmits the status data of the cable body 1 to the cable maintenance platform through the monitoring display unit, so that the maintenance personnel can judge the status of the cable body 1 according to the status data and the alarm signal, and assist the maintenance personnel in judging the damage of the cable body 1, especially at the bending position of the cable body 1 in the irregular space, it can be judged that it is subjected to the bending pressure to form fatigue damage, and it needs to be maintained;

[0047] If the pressure of most of the air strip sets 2 remains basically unchanged, and the pressure data of a few of the air strip sets 2 continues to increase, it is judged that the cable body 1 may be in a state of being subjected to external pressure or being locally overheated and causing thermal expansion. Then the cable state processing unit detects the data of the high-voltage trigger unit. When the cable body 1 is subjected to external pressure, the arc-shaped air strip 22 at the position subjected to pressure will be deformed concavely under the action of the external pressure, causing the two electromagnetic repulsion plates to approach each other, causing the trigger column to abut and trigger, so that the cable state processing unit can receive the trigger signal transmitted by the high-voltage trigger power supply;

[0048] At this time, when the cable status processing unit receives the abutment signal transmitted by the pressure-sensitive trigger unit, it determines that the cable body 1 is in a state of local external pressure. The cable status processing unit will control the alarm of the cable maintenance platform through the alarm unit to start, make an abnormal reminder, and transmit the abnormal status data to the display of the cable maintenance platform through the monitoring display unit to assist the maintenance personnel in determining the cause of the abnormality and deal with the abnormality in time. If the cable body 1 is used in an outdoor exposed environment, check whether the abnormality can be repaired automatically. If it cannot be repaired automatically, maintenance personnel are required to arrive at the site to deal with the abnormality and eliminate the external pressure on the cable body 1. If the cable body 1 is used in an irregular space, maintenance personnel are required to rush to the site immediately to check the equipment structure in the maintenance space and eliminate the external pressure on the cable body 1 at this time, so as to avoid continuous damage to the cable body 1 and ensure the continuity of stable application of the cable body 1.

[0049] At this time, when the cable status processing unit does not receive the contact signal transmitted by the pressure-sensitive trigger unit, it is determined that the cable body 1 is in a state of local overheating. The cable status processing unit will control the alarm of the cable maintenance platform through the alarm unit to start, make an abnormal reminder, and transmit the abnormal status data to the display of the cable maintenance platform through the monitoring display unit to assist the maintenance personnel in determining the cause of the abnormality, and then observe whether the overheating abnormality will be eliminated autonomously. If it cannot be eliminated autonomously, it will be processed in time, and the safety of the application of the cable body 1 will be ensured by adjusting the working states of different cable bodies 1, or by physical cooling. It can effectively increase the functionality of the cable body 1, promote the intelligence of the cable body 1, effectively ensure the safety of the application of the cable body 1 through the role of autonomous monitoring, promote the durability of the cable body 1, reduce the consumption rate of the cable body 1, and further improve the green environmental protection role of the cable body 1.

[0050] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A green and environmentally friendly composite cable, characterized in that: The cable body (1) comprises an outer protective layer (11), an environmentally friendly insulating layer (12) arranged on the inner side of the outer protective layer (11), and a conductive core layer (13) arranged on the inner side of the environmentally friendly insulating layer (12); a plurality of air strip sets (2) connected end to end along the axial direction of the cable body (1) are arranged between the outer protective layer (11) and the environmentally friendly insulating layer (12); a pressure lead plate (3) is fixedly connected between two adjacent air strip sets (2); a plurality of lead air holes are formed on the pressure lead plate (3), and a pressure lead flap (31) is fixedly connected inside the lead air hole; The air strip set (2) is composed of a plurality of arc-shaped air strips (22) fixedly connected along the circumferential direction of the cable body (1), an annular guide tube (4) is fixedly connected between two adjacent arc-shaped air strips (22), a guide flap (41) is fixedly connected to the inner wall of the annular guide tube (4), a buffer air cavity (21) is provided in the arc-shaped air strip (22), and two adjacent buffer air cavities (21) along the circumferential direction of the cable body (1) are connected via the annular guide tube (4), and two adjacent buffer air cavities (21) along the axial direction of the cable body (1) are connected via a pressure connecting piece (3).

2. The green and environmentally friendly composite cable according to claim 1, characterized in that: The buffer air cavity (21) has electromagnetic repulsion plates fixedly connected to both inner walls along the radial direction of the cable body (1); a trigger column is fixedly connected to one end of the two electromagnetic repulsion plates; the input end of the electromagnetic repulsion plates is connected to a pressure resistance unit; the output end of the trigger column is connected to a high-voltage trigger unit; the input end of the pressure resistance unit and the output end of the high-voltage trigger unit are both connected to the signal connection of the cable status processing unit in the cable status monitoring system mounted on the cable maintenance platform.

3. A green and environmentally friendly composite cable according to claim 2, characterized in that: The sum of the heights of the two trigger columns is greater than the width of the pressure contact piece (3).

4. The green and environmentally friendly composite cable according to claim 2, characterized in that: The input end of the cable status processing unit is also connected to the in-set pressure detection unit, and the input end of the in-set pressure detection unit is signal-connected to a pressure detection head disposed in a buffer air cavity (21), and the pressure detection head is disposed in any buffer air cavity (21) in the same air bar set (2).

5. The green and environmentally friendly composite cable according to claim 2, characterized in that: The input end of the cable status processing unit is also connected to a cable parameter acquisition unit, and the output end of the cable status processing unit is also connected to a monitoring display unit and an alarm unit. The input end of the cable parameter acquisition unit is connected to the cable maintenance platform signal, the output end of the monitoring display unit is connected to the display signal on the cable maintenance platform, and the output end of the alarm unit is connected to the alarm signal set on the cable maintenance platform.

6. The green and environment-friendly composite cable according to claim 1, characterized in that: The buffer gas cavity (21) is filled with an inert gas, and the filling amount saturation is 70% to 80%.

7. The green and environment-friendly composite cable according to claim 1, characterized in that: The air strip set (2) is made of magnetically isolating elastic material.

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