Flexible fireproof power cable with intelligent early warning function

Abstract

The invention relates to an intelligent early-warning flexible fireproof power cable applied to the field of fireproof cables, which comprises a sheath, a filling layer arranged on the inner side of the sheath and a flame-retardant layer arranged on the inner side of the filling layer, and a plurality of external temperature sensing assemblies are fixedly connected between the sheath and the filling layer. A plurality of inner temperature sensing assemblies are fixedly connected between the filling layer and the flame-retardant layer, through cooperation of the outer temperature sensing assemblies, the inner temperature sensing assemblies and an intelligent early warning system, the monitoring effect on the whole application environment of the cable body can be effectively achieved, different triggering states of inner and outer temperature sensing data are utilized, abnormal signal transmission is timely and effective, and the cable is protected. According to the invention, the method can effectively achieve the intelligent grading early warning function while reducing the early warning false alarm rate and promoting the accuracy and reliability of abnormal early warning, assists maintenance personnel in judging abnormal causes, and promotes the subsequent maintenance personnel to make timely and effective response measures for abnormal early warning, thereby guaranteeing the safety and stability of the continuous application of the cable body.

Description

TECHNICAL FIELD

[0001] The present application relates to a fireproof power cable, in particular to a flexible fireproof power cable with intelligent early warning applied in the field of fireproof cables. BACKGROUND

[0002] The flexible fireproof power cable is an industrial fireproof cable with copper conductor as the core material, high-temperature-resistant inorganic mineral insulation tape and copper sheath as the outer protective structure, mainly applied in fire-fighting systems, high-rise buildings and subways with high fireproof requirements. There are two major problems in the prior art flexible fireproof power cable: first, the cable lacks intelligent early warning function, leading to delayed emergency response of staff when a fire occurs; second, the cable body is easily damaged when a fire occurs, seriously affecting its fire resistance and application safety.

[0003] In view of the above problems, Chinese patent application CN119480248A discloses a fire warning emergency fireproof cable. When a small fire source appears near the cable, the protective block melts and releases fire extinguishing agent, and at the same time the diaphragm ruptures to form an agent eruption channel, and precise fire extinguishing is achieved through the spout. It effectively solves the technical defects of traditional cables that cannot independently suppress fire at the initial stage of fire, significantly reducing the risk of fire spreading and the probability of cable body damage. Chinese patent CN115881359B discloses an environmentally friendly flame-retardant fireproof intelligent cable, which realizes fire warning by monitoring the operating temperature of the cable in real time. It solves the problems of traditional cables that cannot monitor the operating state, information transmission lag at the initial stage of fire, and difficulty in dealing with remote fires.

[0004] Although the prior art improves the fireproof warning performance of the cable through temperature monitoring and active fire extinguishing mechanism, the temperature monitoring mechanism inside the flexible fireproof power cable is easily disturbed by the environment, and is easily triggered to false alarm in extreme environments such as high temperature in summer or strong sunlight, leading to a decrease in the accuracy of the warning signal. Therefore, how to promote the environmental interference resistance of the intelligent early warning system of the flexible fireproof power cable to avoid false alarms or missed alarms and ensure its safety and effectiveness in application is one of the problems to be solved. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the present application is how to promote the environmental interference resistance of the intelligent early warning system of the flexible fireproof power cable to avoid false alarms or missed alarms and ensure its safety and effectiveness in application.

[0006] In order to solve the above problems, the application provides a flexible fireproof power cable with intelligent early warning, which comprises a sheath, a filling layer arranged inside the sheath, and a flame-retardant layer arranged inside the filling layer, a plurality of outer temperature sensing components are fixedly connected between the sheath and the filling layer, a plurality of inner temperature sensing components are fixedly connected between the filling layer and the flame-retardant layer, and the inner temperature sensing components are arranged in correspondence with the outer temperature sensing components; The outer temperature sensing components and the inner temperature sensing components are signal-connected with an intelligent early warning system carried on a cable maintenance platform, the intelligent early warning system comprises an early warning sensing processing unit, the input end of the early warning sensing processing unit is connected with a temperature sensing trigger unit and a meteorological data acquisition unit, and the output end of the early warning sensing processing unit is connected with a hierarchical early warning unit. The input end of the temperature sensing trigger unit is signal-connected with the outer temperature sensing components and the inner temperature sensing components respectively, the input end of the meteorological data acquisition unit is signal-connected with a meteorological station through the cable maintenance platform, and the output end of the hierarchical early warning unit is signal-connected with an alarm, a display and a cable control end arranged on the cable maintenance platform.

[0007] In the flexible fireproof power cable with intelligent early warning, through cooperation of the outer temperature sensing components, the inner temperature sensing components and the intelligent early warning system, the cable body can be effectively monitored in the whole environment, different trigger states of the inner and outer temperature sensing data can be utilized to reduce the false alarm rate and effectively realize the intelligent hierarchical early warning function, so as to assist maintenance personnel to judge abnormal causes and promote subsequent maintenance personnel to take timely and effective response measures for abnormal early warning.

[0008] As a further improvement of the application, the outer temperature sensing component comprises an outer sensing ring fixedly arranged between the sheath and the filling layer, a plurality of outer arc guide pieces are fixedly connected in the outer sensing ring and uniformly distributed along the circumferential direction of the outer sensing ring, and an outer elastic strip is fixedly connected to the inner end of the outer arc guide piece and extends into the filling layer. An outer sensing cavity is formed in the outer elastic strip, two inner wall surfaces of the outer sensing cavity perpendicular to the radial direction of the outer sensing ring are fixedly connected with outer separation guide columns, an outer temperature change strip is fixedly connected between the two inner wall surfaces of the outer sensing cavity perpendicular to the radial direction of the outer sensing ring and slidably arranged outside the outer separation guide columns, and the input end of the temperature sensing trigger unit is signal-connected with the outer separation guide columns.

[0009] As a further improvement of the application, the inner temperature sensing component comprises an inner sensing ring fixedly arranged between the filling layer and the flame-retardant layer, a plurality of inner arc guide pieces are fixedly connected in the inner sensing ring and uniformly distributed along the circumferential direction of the inner sensing ring, and an inner elastic strip is fixedly connected to the outer end of the inner arc guide piece and extends into the filling layer. The inner elastic strip is internally provided with an inner induction cavity, two inner walls of the inner induction cavity perpendicular to the radial direction of the inner induction ring are fixedly connected with inner separation guide columns, and two inner walls of the inner induction cavity perpendicular to the radial direction of the inner induction ring are fixedly connected with an inner temperature change strip which is slidably sleeved outside the inner separation guide columns.

[0010] As a further improvement of the present application, the two adjacent outer arc guide pieces are fixedly connected with an outer balance strip, and the two adjacent inner arc guide pieces are fixedly connected with an inner balance strip. In the normal state, the outer elastic strip and the inner elastic strip are in a contracted state, and the two matched outer separation guide columns are in abutting contact, and the two matched inner separation guide columns are in abutting contact.

[0011] As a further improvement of the present application, the filling layer is embedded with a plurality of isolation induction sleeves which are uniformly distributed along the circumferential direction of the filling layer, and the outer elastic strip, the inner elastic strip and the isolation induction sleeve are one-to-one corresponding, and the outer elastic strip and the inner elastic strip are extended into the isolation induction sleeve at one end close to each other, and are in sliding fit with the filling layer and the isolation induction sleeve. The outer elastic strip is fixedly connected with an outer touch block at one end close to the inner elastic strip, the inner elastic strip is fixedly connected with an inner touch block at one end close to the outer elastic strip, and the outer touch block and the inner touch block are arranged in the isolation induction sleeve, and the input end of the temperature sensing trigger unit is signal connected with the outer touch block and the inner touch block.

[0012] As a further improvement of the present application, the temperature sensing trigger unit comprises an outer separation induction module, an inner separation induction module and a double trigger induction module, the input ends of the outer separation induction module, the inner separation induction module and the double trigger induction module are connected with a temperature sensing trigger processing module, and the output end of the temperature sensing trigger processing module is connected with an outer temperature abnormality module, an inner temperature abnormality module and a pre-warning abnormality module. The input end of the outer separation induction module is signal connected with the outer separation guide column, the input end of the inner separation induction module is signal connected with the inner separation guide column, the input end of the double trigger induction module is signal connected with the outer touch block and the inner touch block, and the output ends of the outer temperature abnormality module, the inner temperature abnormality module and the pre-warning abnormality module are signal connected with a pre-warning induction processing unit.

[0013] As a further improvement of the present application, the hierarchical pre-warning unit comprises a no-abnormality display module, a first-level pre-warning display module, a second-level pre-warning trigger module, a third-level pre-warning trigger module and an emergency pre-warning trigger module, the input ends of the no-abnormality display module, the first-level pre-warning display module, the second-level pre-warning trigger module, the third-level pre-warning trigger module and the emergency pre-warning trigger module are signal connected with the pre-warning induction processing unit. The output ends of the no-abnormality display module and the first-level pre-warning display module are connected with a display signal arranged on the cable maintenance platform, the output ends of the second-level pre-warning trigger module and the third-level pre-warning trigger module are respectively connected with an alarm and a display on the cable maintenance platform, and the output end of the emergency pre-warning trigger module is respectively connected with an alarm, a display and a cable control end signal arranged on the cable maintenance platform. When the outer-temperature abnormality module, the inner-temperature abnormality module and the pre-warning abnormality module do not transmit abnormal signals to the pre-warning sensing processing unit, the pre-warning sensing processing unit controls the no-abnormality display module to display no-abnormality data. When only the outer-temperature abnormality module transmits an abnormal signal to the pre-warning sensing processing unit, the pre-warning sensing processing unit controls the first-level pre-warning display module to display first-level abnormality data. When only the inner-temperature abnormality module transmits an abnormal signal to the pre-warning sensing processing unit, the pre-warning sensing processing unit controls the second-level pre-warning trigger module to display second-level abnormality data and alarm reminding. When the outer-temperature abnormality module and the inner-temperature abnormality module transmit abnormal signals to the pre-warning sensing processing unit, and the pre-warning abnormality module does not transmit an abnormal signal to the pre-warning sensing processing unit, the pre-warning sensing processing unit controls the third-level pre-warning trigger module to display third-level abnormality data and alarm reminding. When the outer-temperature abnormality module, the inner-temperature abnormality module and the pre-warning abnormality module all transmit abnormal signals to the pre-warning sensing processing unit; or the outer-temperature abnormality module and the pre-warning abnormality module both transmit abnormal signals to the pre-warning sensing processing unit, and the inner-temperature abnormality module does not transmit an abnormal signal to the pre-warning sensing processing unit; or the inner-temperature abnormality module and the pre-warning abnormality module both transmit abnormal signals to the pre-warning sensing processing unit, and the outer-temperature abnormality module does not transmit an abnormal signal to the pre-warning sensing processing unit; the pre-warning sensing processing unit controls the emergency pre-warning trigger module to display emergency pre-warning data, alarm reminding and autonomous cut-off protection.

[0014] As a further improvement of the present application, the input end of the pre-warning sensing processing unit is further connected with a cable application parameter setting unit, the input end of the cable application parameter setting unit is connected with a data input end signal arranged on the cable maintenance platform, the output end of the pre-warning sensing processing unit is further connected with a cable life prediction unit, and the output end of the cable life prediction unit is connected with a display signal arranged on the cable maintenance platform.

[0015] As a further improvement of the present application, a plurality of outer-temperature accompanying sleeves are fixedly connected between the sheath and the filling layer, and the outer-temperature sensing assembly and the outer-temperature accompanying sleeves are arranged at intervals; and a plurality of inner-temperature accompanying sleeves are fixedly connected between the filling layer and the flame-retardant layer, and the inner-temperature sensing assembly and the inner-temperature accompanying sleeves are arranged at intervals.

[0016] As a further improvement of the present application, the outer temperature sleeve and the inner temperature sleeve are fixedly connected with a heating conductor, and the outer temperature sleeve and the inner temperature sleeve are also filled with a mineral powder insulation filler wrapped around the heating conductor, the signal of the early warning sensing processing unit is connected with a self-calibration verification unit, and the output end of the self-calibration verification unit is connected with the heating conductor.

[0017] In summary, through the cooperation of the outer temperature sensing assembly, the inner temperature sensing assembly and the intelligent early warning system, the full environmental monitoring of the cable body can be effectively realized, the different trigger states of the inner and outer temperature sensing data are used for timely and effective abnormal signal transmission, the false alarm rate is reduced, the accuracy and reliability of the abnormal early warning are promoted, and the intelligent grading early warning function is also effectively realized, which assists the maintenance personnel to judge the abnormal inducement and promotes the subsequent maintenance personnel to take timely and effective response measures for the abnormal early warning, so as to ensure the safety and stability of the continuous application of the cable body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The cable body is the first to the third embodiment of the present application; Figure 2 The intelligent early warning system control logic diagram of the first to the third embodiment of the present application; Figure 3 The cable body is the first to the third embodiment of the present application; Figure 4 The cable body is the first to the third embodiment of the present application; Figure 5 The cable body is the first to the third embodiment of the present application; Figure 6 The cable body is the first to the third embodiment of the present application; Figure 5 The local enlarged view of A in the above figure; Figure 7 The cable body is the first to the third embodiment of the present application; Figure 8 The cable body is the first to the third embodiment of the present application; Figure 9 The cable body is the first to the third embodiment of the present application.

[0019] Explanation of figure mark: 1. Cable body; 11. Sheath; 12. Filler layer; 13. Flame retardant layer; 2. External temperature sensing assembly; 21. External sensing ring; 22. External arc guide plate; 23. External elastic strip; 231. External separation guide post; 232. External temperature change strip; 24. External contact block; 25. External equalization strip; 3. External temperature accompanying sleeve; 4. Internal temperature sensing assembly; 41. Internal sensing ring; 42. Internal arc guide plate; 43. Internal elastic strip; 431. Internal separation guide post; 432. Internal temperature change strip; 44. Internal contact block; 45. Internal equalization strip; 5. Internal temperature accompanying sleeve; 6. Isolation sensing sleeve. Detailed Implementation

[0020] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0021] Implementation method 1: Figure 1 - Figure 9 The flexible fireproof power cable with intelligent early warning includes a sheath 11, a filling layer 12 disposed inside the sheath 11, and a flame-retardant layer 13 disposed inside the filling layer 12. Multiple external temperature sensing components 2 are fixedly connected between the sheath 11 and the filling layer 12, and multiple internal temperature sensing components 4 are fixedly connected between the filling layer 12 and the flame-retardant layer 13. The internal temperature sensing components 4 are arranged in a corresponding manner to the external temperature sensing components 2. The external temperature sensing component 2 and the internal temperature sensing component 4 are signal connected to an intelligent early warning system mounted on the cable maintenance platform. The intelligent early warning system includes an early warning sensing and processing unit. The input end of the early warning sensing and processing unit is connected to a temperature triggering unit and a meteorological data acquisition unit. The output end of the early warning sensing and processing unit is connected to a graded early warning unit. The input terminals of the temperature-sensing trigger unit are connected to the external temperature sensing component 2 and the internal temperature sensing component 4 respectively. The input terminal of the meteorological data acquisition unit is connected to the meteorological station through the cable maintenance platform. The output terminal of the graded early warning unit is connected to the alarm, display and cable control terminal set on the cable maintenance platform. Through the cooperation of the external temperature sensing component 2, the internal temperature sensing component 4 and the intelligent early warning system, the monitoring of the entire application environment of the cable body 1 can be effectively realized. By utilizing the different triggering states of the internal and external temperature sensing data, timely and effective abnormal signal transmission can be achieved, reducing the false alarm rate of the early warning and promoting the accuracy and reliability of the abnormal early warning. At the same time, it can also effectively realize the intelligent graded early warning function, assist maintenance personnel in judging the abnormal causes, and promote subsequent maintenance personnel to make timely and effective response measures to the abnormal early warning, thereby ensuring the safety and stability of the continuous application of the cable body 1. Furthermore, the external temperature sensing component 2 and the internal temperature sensing component 4 are both set on the outside of the flame-retardant layer 13, which can play an effective early warning and protection role for the cable body 1. Combined with the fireproof effect of the flame-retardant layer 13, it can effectively avoid the continuous damage of fire to the cable body 1 and ensure the stability of the communication of the cable body 1 in emergency situations.

[0022] Figure 5 - Figure 9 The outer temperature sensing assembly 2 comprises an outer sensing ring 21 fixed between the sheath 11 and the filling layer 12, a plurality of outer arc guide pieces 22 are fixedly connected in the outer sensing ring 21 and uniformly distributed along the circumferential direction of the outer sensing ring 21, and an outer elastic strip 23 extending into the filling layer 12 is fixedly connected to the inner end of the outer arc guide piece 22; An outer sensing cavity is formed in the outer elastic strip 23, and outer separation guide columns 231 are fixedly connected to the two inner wall surfaces of the outer sensing cavity perpendicular to the radial direction of the outer sensing ring 21, and an outer temperature variable strip 232 slidingly sleeved outside the outer separation guide columns 231 is fixedly connected between the two inner wall surfaces of the outer sensing cavity perpendicular to the radial direction of the outer sensing ring 21, the input end of the temperature sensing triggering unit is signal connected with the outer separation guide columns 231, the outer temperature variable strip 232 can generate corresponding temperature change actions through the external temperature data conducted by the outer arc guide piece 22, and can transmit corresponding disconnection triggering data to the temperature sensing triggering unit through the outer separation guide columns 231, so that the early warning sensing processing unit can determine the application state of the cable body 1 at this time, and through the measures of independent monitoring and sensing inside and outside, in combination with the setting of the meteorological data acquisition unit, the alarm caused by external environmental factors can be effectively eliminated or maintained, so as to avoid the situation of missing report or false report, and promote the accuracy and reliability of the early warning.

[0023] Figure 5 - Figure 9 The inner temperature sensing assembly 4 comprises an inner sensing ring 41 fixed between the filling layer 12 and the flame-retardant layer 13, a plurality of inner arc guide pieces 42 are fixedly connected in the inner sensing ring 41 and uniformly distributed along the circumferential direction of the inner sensing ring 41, and an inner elastic strip 43 extending into the filling layer 12 is fixedly connected to the outer end of the inner arc guide piece 42; An inner sensing cavity is formed in the inner elastic strip 43, and inner separation guide columns 431 are fixedly connected to the two inner wall surfaces of the inner sensing cavity perpendicular to the radial direction of the inner sensing ring 41, and an inner temperature variable strip 432 slidingly sleeved outside the inner separation guide columns 431 is fixedly connected between the two inner wall surfaces of the inner sensing cavity perpendicular to the radial direction of the inner sensing ring 41, the input end of the temperature sensing triggering unit is signal connected with the inner separation guide columns 431, the inner temperature variable strip 432 can generate corresponding temperature change actions through the internal temperature data conducted by the inner arc guide piece 42, and can transmit corresponding disconnection triggering data to the temperature sensing triggering unit through the inner separation guide columns 431, so that the early warning sensing processing unit can determine the internal environment state of the cable body 1 at this time, and timely send an early warning reminder to the maintenance personnel, so that the maintenance personnel can timely investigate the cause of the high temperature inside the cable body 1 and handle and maintain it, so as to ensure the stability and safety of the continuous communication of the cable body 1 and ensure the effectiveness of the subsequent continuous application.

[0024] Figure 5 -Figure 9 The outer equalizing strip 25 is fixedly connected between two adjacent outer arc guiding pieces 22, and the inner equalizing strip 45 is fixedly connected between two adjacent inner arc guiding pieces 42. The cooperation of the outer equalizing strip 25 and the inner equalizing strip 45 can realize the uniformity of temperature conduction, so as to realize the full-trigger transmission of data in the single outer temperature sensing assembly 2 or the inner temperature sensing assembly 4, ensure the strength of the digital signal, and improve the collection efficiency and collection accuracy of the temperature sensing trigger unit. In the normal state, the outer elastic strip 23 and the inner elastic strip 43 are in a contracted state, and the two cooperated outer separation guide columns 231 are in an abutting state, the two cooperated inner separation guide columns 431 are in an abutting state, the outer temperature variable strip 232 and the inner temperature variable strip 432 are in a contracted state. The outer temperature variable strip 232 and the inner temperature variable strip 432 are made of shape memory alloy with multiple temperature variable points, or are made of multiple sections of shape memory alloy composite with no temperature variable points. The error value of the temperature variable point of the shape memory alloy is ±2℃, which can produce temperature sensing deformation within a certain temperature range, and further produce corresponding deformation according to the temperature data sensed, so as to effectively realize the effective sensing and data transmission of the safety of the cable body 1, fully ensure the effectiveness and reliability of the data sensing of the cable body 1, make it continuously and repeatedly produce sensing data in the cable body 1, effectively adapt to the durability of the cable body 1, and further ensure the reliability of the data monitoring and sensing of the cable body 1.

[0025] Figure 1 And Figure 2 The input end of the early warning sensing processing unit is also connected with a cable application parameter setting unit, the input end of the cable application parameter setting unit is signal connected with a data input end arranged on the cable maintenance platform, the output end of the early warning sensing processing unit is also connected with a cable life prediction unit, the output end of the cable life prediction unit is signal connected with a display arranged on the cable maintenance platform. The setting of the cable application parameter setting unit and the cable life prediction unit can further promote the accuracy of the early warning sensing processing unit in judging the state of the cable body 1 in the application process, promote the accuracy and sensitivity of the early warning signal response, ensure the effectiveness of the monitoring and maintenance of the cable body 1, and the setting of the cable life prediction unit can predict and analyze the life of the cable body 1 under the actual application state in combination with the generation of the early warning signal, assist the maintenance personnel in monitoring, and take effective measures before the life failure of the cable body 1, which can not only reduce the maintenance difficulty of the cable body 1, but also ensure the safety of the communication in the application place.

[0026] Figure 1 - Figure 9In the process of application of the cable body 1, the maintenance personnel transmits parameter data about the application of the cable body 1 to the cable application parameter setting unit through the data input end, the parameter data including data such as the application site of the cable body 1, the ventilation effect, the ambient temperature, the communication rating, the rated service life and the related abnormal loss, the early warning sensing processing unit can receive, analyze and store the data transmitted by the cable application parameter setting unit, the early warning sensing processing unit can collect the environmental data of the current application of the cable body 1 according to the meteorological data acquisition unit, and calculate the service life of the cable body 1 according to the actual application time of the cable body 1 and the subsequent abnormal loss, and then display the countdown of the service life of the cable body 1 through the display, so that the maintenance personnel can replace the cable body 1 reaching the rated service life in time, thereby ensuring the stability and safety of subsequent communication.

[0027] In the process of application of the cable body 1, the flame-retardant layer 13, the inner temperature sensing assembly 4, the inner temperature accompanying sleeve 5, the filling layer 12, the outer temperature sensing assembly 2, the outer temperature accompanying sleeve 3 and the sheath 11 can maintain normal temperature conduction, effectively realizing the heat dissipation effect of the cable body 1 in the application process, avoiding the problem of performance damage of the cable body 1 caused by high internal temperature due to poor heat dissipation.

[0028] When the external temperature continuously rises and is higher than the internal temperature, the external temperature is first conducted to the outer temperature accompanying sleeve 3 and the outer sensing ring 21 through the sheath 11, and then the outer arc conducting piece 22 directly conducts it to the outer temperature variable strip 232 in the outer elastic strip 23. When the external temperature continuously rises to the corresponding deformation temperature of the outer temperature variable strip 232, the outer temperature variable strip 232 will produce a certain elongation deformation, which in turn drives the outer elastic strip 23 to produce elongation deformation, so that the two abutting outer separation guide columns 231 are in a disconnected state, thereby enabling the data transmission of the temperature sensing trigger unit triggered by the external temperature; When the external temperature continuously rises to the deformation temperature of the outer temperature variable strip 232, the outer temperature variable strip 232 will produce complete elongation deformation, which in turn drives the outer elastic strip 23 to produce elongation deformation, so that the two abutting outer separation guide columns 231 are in a disconnected state, thereby enabling the data transmission of the temperature sensing trigger unit triggered by the external temperature; With the continuous conduction of the external temperature to the internal temperature, when the inner temperature variable strip 432 senses the external temperature, it needs to be conducted to the inner temperature sensing assembly 4 and the inner temperature accompanying sleeve 5 through the filling layer 12, and then conducted to the inner temperature variable strip 432 through the inner arc conducting piece 42. After the continuous conduction of the temperature, the heat loss effect will in turn cause the temperature sensing deformation of the inner temperature variable strip 432 to be lagging behind the temperature sensing deformation of the outer temperature variable strip 232, or the inner temperature variable strip 432 does not produce temperature sensing deformation, so that the outer temperature variable strip 232 can timely and effectively drive the outer separation guide column 231 to disconnect to sense and transmit data of the external temperature change.

[0029] When the internal temperature continues to rise, the internal temperature first conducts to the inner induction ring 41 and the inner temperature accompanying sleeve 5 through the flame-retardant layer 13, and then the inner arc conducting piece 42 directly conducts it to the inner temperature variable strip 432 in the inner elastic strip 43. When the internal temperature continues to rise to the corresponding deformation temperature of the inner temperature variable strip 432, the inner temperature variable strip 432 will produce a certain elongation deformation, which in turn drives the inner elastic strip 43 to produce elongation deformation, so that the two abutting inner separation guide columns 431 are in a disconnected state, thereby enabling the internal temperature triggering of the temperature sensing triggering unit to transmit data. When the internal temperature continues to rise to the deformation temperature of the inner temperature variable strip 432, the inner temperature variable strip 432 will produce complete elongation deformation, which in turn drives the inner elastic strip 43 to produce elongation deformation, so that the two abutting inner separation guide columns 431 are in a disconnected state, thereby enabling the internal temperature triggering of the temperature sensing triggering unit to transmit data. With the continuous conduction of the internal temperature to the outside, when the outer temperature variable strip 232 senses the internal temperature, it needs to conduct to the outer temperature sensing assembly 2 and the outer temperature accompanying sleeve 3 through the filling layer 12, and then conduct to the outer temperature variable strip 232 through the outer arc conducting piece 22. After the continuous conduction of the temperature, the heat loss effect will in turn cause the temperature sensing deformation of the outer temperature variable strip 232 to be hysteresis compared to the temperature sensing deformation of the inner temperature variable strip 432, or the outer temperature variable strip 232 does not produce temperature sensing deformation. Therefore, the inner temperature variable strip 432 can timely and effectively drive the inner separation guide column 431 to disconnect to sense the change of the internal temperature and transmit data.

[0030] The early warning sensing processing unit can effectively display the application state of the cable body 1 according to the signal transmission of the temperature sensing triggering unit, and transmit the relevant application state data, early warning data and alarm signal to the maintenance personnel through the hierarchical early warning unit, display and alarm, so that the maintenance personnel can take timely and effective response measures according to the corresponding data, ensure the safety of the application of the cable body 1 and the stability of the communication, and effectively avoid the false alarm and missed alarm of the early warning by independent sensing and monitoring of the internal and external temperature data combined with the meteorological data of the environment, improve the accuracy and reliability of the early warning signal.

[0031] The second embodiment: Figure 1 - Figure 9The flexible fireproof power cable with intelligent early warning is shown. The filling layer 12 is embedded with a plurality of isolation induction sleeves 6 uniformly distributed along the circumferential direction thereof. The isolation induction sleeves 6 are made of temperature insulation materials, so that the outer temperature change strip 232 in the outer elastic strip 23 can only generate temperature sensing deformation through the temperature conduction of the outer arc guide piece 22, and the inner separation guide column 431 in the inner elastic strip 43 can only generate temperature sensing deformation through the temperature conduction of the inner arc guide piece 42, thereby ensuring the effectiveness of the internal and external temperature sensing transmission. The outer elastic strip 23, the inner elastic strip 43 and the isolation induction sleeve 6 are one-to-one corresponding. The outer elastic strip 23 and the inner elastic strip 43 extend into the isolation induction sleeve 6 at one end close to each other, and are in sliding fit with the filling layer 12 and the isolation induction sleeve 6. The outer elastic strip 23 is fixedly connected with an outer contact block 24 at one end close to the inner elastic strip 43. The inner elastic strip 43 is fixedly connected with an inner contact block 44 at one end close to the outer elastic strip 23. The outer contact block 24 and the inner contact block 44 are arranged in the isolation induction sleeve 6. The input ends of the temperature sensing trigger unit are signal connected with the outer contact block 24 and the inner contact block 44. The arrangement of the outer contact block 24 and the inner contact block 44 can sense and feed back the deformation degree of the outer temperature change strip 232 and the inner temperature change strip 432, effectively adapt the data feedback of the outer separation guide column 231 and the inner separation guide column 431, comprehensively transmit the data of the application state of the cable body 1 to the temperature sensing trigger unit, further improve the judgment accuracy of the early warning sensing processing unit, thereby ensuring the reliability of the subsequent hierarchical early warning data, ensuring the early warning accuracy, promoting the effectiveness of the maintenance measures, and ensuring the safety and sustainability of the application of the cable body 1.

[0032] Figure 1 And Figure 2 The temperature sensing trigger unit includes an outer separation induction module, an inner separation induction module and a double trigger induction module. The input ends of the outer separation induction module, the inner separation induction module and the double trigger induction module are connected with a temperature sensing trigger processing module. The output end of the temperature sensing trigger processing module is connected with an outer temperature abnormality module, an inner temperature abnormality module and a pre-warning abnormality module. The input end of the outer separation induction module is signal connected with the outer separation guide column 231. The input end of the inner separation induction module is signal connected with the inner separation guide column 431. The input end of the double trigger induction module is signal connected with the outer contact block 24 and the inner contact block 44. The output ends of the outer temperature abnormality module, the inner temperature abnormality module and the pre-warning abnormality module are signal connected with the early warning sensing processing unit. Through the cooperation of each module, the data of the outer separation guide column 231, the inner separation guide column 431, the outer contact block 24 and the inner contact block 44 can be independently collected and the subsequent abnormal data can be collected. While ensuring the data collection efficiency and reducing the data classification and identification difficulty, the difficulty of the early warning sensing processing unit in operating and analyzing the sensing collected data can also be effectively reduced, the efficiency of the abnormal response can be promoted, the early warning signal can be quickly and accurately sent when the abnormality occurs, and the safety of the cable body 1 can be ensured.

[0033] Figure 1 and Figure 2 The hierarchical early warning unit is shown to include an abnormality-free display module, a first-level early warning display module, a second-level early warning triggering module, a third-level early warning triggering module, and an emergency early warning triggering module. The input ends of the abnormality-free display module, the first-level early warning display module, the second-level early warning triggering module, the third-level early warning triggering module, and the emergency early warning triggering module are all in signal connection with the early warning sensing and processing unit; The output ends of the abnormality-free display module and the first-level early warning display module are both in signal connection with a display arranged on the cable maintenance platform. The output ends of the second-level early warning triggering module and the third-level early warning triggering module are both in signal connection with an alarm and a display on the cable maintenance platform, respectively. The output end of the emergency early warning triggering module is in signal connection with an alarm, a display, and a cable control end arranged on the cable maintenance platform, respectively. The arrangement of each early warning module can form a modular signal feedback channel for different abnormal states, thereby simplifying the data processing difficulty, improving the early warning efficiency, realizing timely and effective early warning signal transmission, improving the response efficiency of the maintenance personnel, reducing the difficulty of the maintenance personnel to take corresponding response measures, promoting the development of early warning measures towards standardization and standardization, thereby ensuring the effectiveness of the maintenance of the cable body 1, reducing the abnormal processing difficulty, and improving the durability of the cable body 1.

[0034] Figure 1 - Figure 9When the internal and external temperatures are both in normal state, neither the external temperature variable bar 232 nor the internal temperature variable bar 432 reaches any temperature variable temperature, and the external temperature variable bar 232 and the internal temperature variable bar 432 remain in a continuous contraction state, driving the external elastic bar 23 and the internal elastic bar 43 to remain in a contraction state, the external separation guide column 231 located in the same external elastic bar 23 remains in a continuous abutting state, the internal separation guide column 431 located in the same internal elastic bar 43 remains in a continuous abutting state, and due to the contraction state of the external elastic bar 23 and the internal elastic bar 43, the external contact block 24 and the internal contact block 44 are in a separated state in the isolation induction sleeve 6, and at this time, the external separation induction module transmits data transmission that the external separation guide column 231 does not generate a disconnection trigger to the temperature sensing trigger processing module, the internal separation induction module transmits data transmission that the internal separation guide column 431 does not generate a disconnection trigger to the temperature sensing trigger processing module, and the double trigger induction module transmits separation data of the external contact block 24 and the internal contact block 44 to the temperature sensing trigger processing module, and the temperature sensing trigger processing module does not transmit an abnormal signal to the early warning induction processing unit through the external temperature abnormality module, the internal temperature abnormality module and the early warning abnormality module, the early warning induction processing unit judges that the cable body 1 is in a normal state at this time, and then controls the no-abnormality display module to display no-abnormality data, and the maintenance personnel maintains the communication operation of the cable body 1 according to the displayed data, and the early warning induction processing unit also transmits the normal state data of the cable body 1 to the cable life prediction unit, the cable life prediction unit predicts and calculates the service life of the cable body 1 according to the normal loss of the cable body 1, and then displays the life countdown to the maintenance personnel through the display.

[0035] When the external temperature gradually increases and reaches a certain temperature deformation temperature of the external temperature deformation strip 232 under temperature conduction, the external temperature deformation strip 232 drives the external elastic strip 23 to produce a certain elongation deformation, causing the two external separation guide columns 231 inside the external elastic strip 23 to separate and break off, and during the continuous conduction of the external temperature, the internal temperature deformation strip 432 does not reach the temperature deformation temperature, the internal temperature deformation strip 432 drives the internal elastic strip 43 to keep the continuous contraction deformation, and then the external separation sensing module transmits the break-off trigger data of the external separation guide column 231 to the temperature trigger processing module, the internal separation sensing module transmits the data transmission that the internal separation guide column 431 does not produce break-off trigger to the temperature trigger processing module, and the double-trigger sensing module transmits the separation data of the external touch block 24 and the internal touch block 44 to the temperature trigger processing module. The temperature trigger processing module only transmits the external temperature abnormal signal to the early warning sensing processing unit through the external temperature abnormal module, the early warning sensing processing unit processes and judges the signal, then controls the first-level early warning display module to display the first-level abnormal data, and the maintenance personnel processes the application environment of the cable body 1 according to the displayed data and related meteorological data, such as cooling or shading, to avoid the damage of the continuous high temperature of the external environment to the communication stability of the cable body 1, and the early warning sensing processing unit also transmits the external temperature abnormal data of the cable body 1 to the cable life prediction unit. The cable life prediction unit predicts and calculates the service life of the cable body 1 according to the normal loss and external temperature abnormal loss of the cable body 1, and then displays the life countdown to the maintenance personnel through the display.

[0036] When the internal temperature gradually increases and reaches a certain temperature deformation temperature of the internal temperature deformation strip 432 under temperature conduction, the internal temperature deformation strip 432 drives the internal elastic strip 43 to produce a certain elongation deformation, causing the two internal separation guide columns 431 inside the internal elastic strip 43 to separate and break off, and in the process of continuous temperature conduction, the internal temperature does not reach the temperature deformation temperature of the external temperature deformation strip 232, the external temperature deformation strip 232 drives the external elastic strip 23 to maintain continuous contraction deformation, and then the internal separation sensing module transmits the break-off trigger data of the internal separation guide column 431 to the temperature trigger processing module, the external separation sensing module transmits the data transmission that the external separation guide column 231 does not produce break-off trigger to the temperature trigger processing module, and the double-trigger sensing module transmits the separation data of the external contact block 24 and the internal contact block 44 to the temperature trigger processing module. The temperature trigger processing module only transmits the internal temperature abnormal signal to the early warning sensing processing unit through the internal temperature abnormal module, the early warning sensing processing unit processes and judges the signal, and then controls the secondary early warning trigger module to display and alarm the secondary abnormal data, the maintenance personnel checks and maintains the communication environment of the cable body 1 according to the displayed data and alarm signal, shunts the more communication data, or cuts off the communication of the cable body 1, checks or maintains the joint, or replaces it, and the early warning sensing processing unit also transmits the internal temperature abnormal data of the cable body 1 to the cable life prediction unit. The cable life prediction unit predicts and calculates the service life of the cable body 1 according to the normal loss and internal temperature abnormal loss of the cable body 1, and then displays the life countdown to the maintenance personnel through the display.

[0037] When the external temperature gradually increases, causing the external temperature deformation strip 232 to drive the external elastic strip 23 to produce a certain elongation deformation, and drive the two external separation guide columns 231 inside the external elastic strip 23 to separate and break off, the continuous conduction of the temperature will cause the internal temperature deformation strip 432 to drive the internal elastic strip 43 to also produce a certain elongation deformation, and drive the two internal separation guide columns 431 inside the internal elastic strip 43 to separate and break off, the external separation sensing module transmits the break-off trigger data of the external separation guide column 231 to the temperature trigger processing module, and the internal separation sensing module transmits the break-off trigger data of the internal separation guide column 431 to the temperature trigger processing module, but because the elongation deformation of the external temperature deformation strip 232 and the internal temperature deformation strip 432 cannot drive the external contact block 24 and the internal contact block 44 to abut, and then the double-trigger sensing module transmits the separation data of the external contact block 24 and the internal contact block 44 to the temperature trigger processing module, at this time the trigger signal of the external separation sensing module is transmitted to the temperature trigger processing module before the trigger signal of the internal separation sensing module; Or after the internal temperature gradually rises, causing the inner temperature variable strip 432 to drive the inner elastic strip 43 to produce a certain elongation deformation, and drive the two inner separation guide columns 431 located in the inner elastic strip 43 to separate and break, and the continuous conduction of the temperature causes the outer temperature variable strip 232 to drive the outer elastic strip 23 to also produce a certain elongation deformation, and drive the two outer separation guide columns 231 located in the outer elastic strip 23 to separate and break, the inner separation sensing module transmits the breakage trigger data of the inner separation guide column 431 to the temperature sensing trigger processing module, and the outer separation sensing module transmits the breakage trigger data of the outer separation guide column 231 to the temperature sensing trigger processing module, but because the elongation deformation of the outer temperature variable strip 232 and the inner temperature variable strip 432 cannot drive the outer contact block 24 and the inner contact block 44 to abut, the double-trigger sensing module transmits the separation data of the outer contact block 24 and the inner contact block 44 to the temperature sensing trigger processing module, at this time, the trigger signal of the inner separation sensing module is earlier than the trigger signal of the outer separation sensing module to the temperature sensing trigger processing module; The temperature sensing trigger processing module sends the internal and external temperature abnormal data to the early warning sensing processing unit through the outer temperature abnormal module and the inner temperature abnormal module, the early warning sensing processing unit controls the three-level early warning trigger module to display and alarm the three-level abnormal data according to the received abnormal data and the abnormal inducement judged according to the priority order of the abnormal feedback, the maintenance personnel reduces the temperature or sunshade treatment of the application environment of the cable body 1 according to the displayed data and alarm signal, and the weather data, or checks the communication state and joint state of the cable body 1, then judges the effectiveness of the measures according to the subsequent feedback data, and takes the appropriate response measures according to the feedback data, and the early warning sensing processing unit also transmits the internal and external temperature abnormal data of the cable body 1 to the cable life prediction unit, the cable life prediction unit predicts and calculates the service life of the cable body 1 according to the normal loss of the application of the cable body 1 and the total loss of the internal and external temperature abnormalities, and then displays the life countdown to the maintenance personnel through the display.

[0038] When the external temperature gradually rises, causing the outer temperature variable strip 232 to drive the outer elastic strip 23 to produce complete elongation deformation, and drive the two outer separation guide columns 231 located in the outer elastic strip 23 to separate and break, and the complete elongation deformation of the outer elastic strip 23 can drive the outer contact block 24 to abut against the inner contact block 44, then the outer separation sensing module transmits the breakage trigger data of the outer separation guide column 231 to the temperature sensing trigger processing module, and the double-trigger sensing module transmits the abutment trigger data of the outer contact block 24 and the inner contact block 44 to the temperature sensing trigger processing module, so that the temperature sensing trigger processing module transmits the external temperature abnormal data and the double-trigger abnormal data to the early warning sensing processing unit through the outer temperature abnormal module and the early warning abnormal module; Or when the internal temperature gradually increases, causing the internal temperature variable strip 432 to drive the internal elastic strip 43 to produce complete elongation deformation, and drive the two internal separation guide columns 431 located in the internal elastic strip 43 to separate and disconnect, and the complete elongation deformation of the internal elastic strip 43 can drive the internal contact block 44 to abut against the external contact block 24, and then the internal separation sensing module transmits the disconnection trigger data of the internal separation guide column 431 to the temperature trigger processing module, the double-trigger sensing module transmits the abutment trigger data of the external contact block 24 and the internal contact block 44 to the temperature trigger processing module, so that the temperature trigger processing module transmits the internal temperature abnormal data and the double-trigger abnormal data to the early warning sensing processing unit through the internal temperature abnormal module and the early warning abnormal module; Or under the action of temperature conduction, the external temperature variable strip 232 drives the external elastic strip 23 to produce a certain elongation deformation, and drives the two external separation guide columns 231 located in the external elastic strip 23 to separate and disconnect, and after the internal temperature variable strip 432 drives the internal elastic strip 43 to produce a certain elongation deformation, and drives the two internal separation guide columns 431 located in the internal elastic strip 43 to separate and disconnect, the elongation deformation of the external elastic strip 23 and the internal elastic strip 43 can promote the external contact block 24 and the internal contact block 44 to abut against each other, and then the external separation sensing module transmits the disconnection trigger data of the external separation guide column 231 to the temperature trigger processing module, the internal separation sensing module transmits the disconnection trigger data of the internal separation guide column 431 to the temperature trigger processing module, and the double-trigger sensing module transmits the abutment trigger data of the external contact block 24 and the internal contact block 44 to the temperature trigger processing module, so that the temperature trigger processing module transmits the internal and external temperature abnormal data and the double-trigger abnormal data to the early warning sensing processing unit through the external temperature abnormal module, the internal temperature abnormal module and the early warning abnormal module; The early warning sensing processing unit analyzes and processes the data received by it, judges the abnormal inducement, and then controls the emergency early warning trigger module to display data, alarm and remind, and autonomously cut off protection. The emergency early warning caused by the continuous increase of the external temperature can transmit the early warning with fire to the maintenance personnel, and the emergency early warning caused by the continuous increase of the internal temperature can transmit the early warning with the overloading of the cable body 1 or the short circuit to the maintenance personnel. The maintenance personnel generates emergency response measures for the application environment and communication state of the cable body 1 according to the displayed data and alarm signals, as well as meteorological data, which include but are not limited to fire prevention and extinguishing, cooling, signal cutting and switching communication channel, etc. The early warning sensing processing unit also transmits the internal and external temperature abnormal data of the cable body 1 to the cable life prediction unit. After the cable body 1 is continuously applied and the communication is reconnected, the cable life prediction unit predicts and calculates the service life of the cable body 1 according to the normal loss of the application and the total loss of the internal and external temperature abnormalities, and then displays the life countdown to the maintenance personnel through the display.

[0039] The third embodiment: Figure 1 -Figure 9 The flexible fireproof power cable with intelligent early warning, a plurality of outer temperature accompanying sleeves 3 are fixedly connected between the sheath 11 and the filling layer 12, and the outer temperature sensing assembly 2 and the outer temperature accompanying sleeve 3 are arranged at intervals, a plurality of inner temperature accompanying sleeves 5 are fixedly connected between the filling layer 12 and the flame-retardant layer 13, and the inner temperature sensing assembly 4 and the inner temperature accompanying sleeve 5 are arranged at intervals.

[0040] Figure 1 - Figure 3 The outer temperature accompanying sleeve 3 and the inner temperature accompanying sleeve 5 are fixedly connected with the heat conductor, and the outer temperature accompanying sleeve 3 and the inner temperature accompanying sleeve 5 are also filled with the mineral powder insulation filler wrapping the heat conductor. The signal of the early warning sensing processing unit is connected with the self-calibration verification unit, and the output end of the self-calibration verification unit is connected with the heat conductor. Through the setting of the self-calibration unit and the heat conductor, the temperature sensing conduction and the temperature sensing deformation of the outer temperature sensing assembly 2 and the inner temperature sensing assembly 4 can be effectively calibrated in the application process, the temperature sensing error caused by application loss is reduced, and the self-operation compensation can be performed when there is error, the continuous effectiveness and accuracy of the inner and outer temperature sensing early warning are effectively improved, and the false alarm or missed alarm of the abnormality is avoided.

[0041] Figure 1 - Figure 9When the cable body 1 is continuously applied, the maintenance personnel inputs the self-calibration verification parameter data and the self-verification periodicity into the early warning sensing processing unit through the cable application parameter setting unit according to the maintenance period. The self-verification periodicity can be set as an interval of two maintenance periods or three maintenance periods, thereby reducing the maintenance difficulty and cost while ensuring the accuracy of early warning monitoring, and promoting the economic benefits of the cable body 1 application. Then, the early warning sensing processing unit will periodically send a self-calibration control instruction to the self-calibration verification unit according to the parameter data when the cable body 1 is in a normal state, so that the self-calibration verification unit will pass current into the heating conductor, which will continuously heat up under the action of its own resistance, and then transfer heat energy to the outer temperature sensing assembly 2 and the inner temperature sensing assembly 4 cooperating with it. The self-calibration verification unit can judge the temperature control state according to the temperature feedback of the heating conductor, and timely adjust and control according to the feedback, so as to ensure the calibration effect of the temperature sensing deformation of the outer temperature variable strip 232 and the inner temperature variable strip 432, thereby avoiding the inaccuracy caused by the loss of long-term application. After the self-calibration program of the self-calibration verification unit is completed, it will feed back the calibration data to the early warning sensing processing unit, so that the early warning sensing processing unit can calculate the temperature sensing deformation state and temperature sensing deformation error of the outer temperature variable strip 232 and the inner temperature variable strip 432 according to the feedback calibration data and the trigger data generated by the outer temperature sensing assembly 2 and the inner temperature sensing assembly 4, and perform self-compensation calculation on the error in the subsequent application trigger process to avoid false positives and omissions after long-term application, and ensure the continuous and effective early warning effect of the application safety of the cable body 1.

[0042] And the self-calibration verification unit controls the heating conductor in the outer temperature accompanying sleeve 3 and the inner temperature accompanying sleeve 5 independently when performing the self-calibration program, thereby pre-controlling the heating conductor in the outer temperature accompanying sleeve 3, calibrating the separation trigger of the outer temperature variable strip 232 in the outer temperature sensing assembly 2 driving the outer separation guide column 231 at a certain temperature, and the trigger data of the outer contact block 24 and the inner contact block 44 when the outer elastic strip 23 is fully stretched. The early warning sensing processing unit can receive this data through each module of the temperature sensing trigger unit. After the calibration of the outer temperature variable strip 232 is completed, the self-calibration verification unit can control the heating conductor in the inner temperature accompanying sleeve 5 after the cable body 1 is cooled down by itself, and calibrate the separation trigger of the inner temperature variable strip 432 in the inner temperature sensing assembly 4 driving the inner separation guide column 431 at a certain temperature, and the trigger data of the inner contact block 44 and the outer contact block 24 when the inner elastic strip 43 is fully stretched. The early warning sensing processing unit can receive this data through each module of the temperature sensing trigger unit, and then calculate the temperature sensing deformation state and temperature sensing deformation error of the outer temperature variable strip 232 and the inner temperature variable strip 432 according to the feedback data of the self-calibration.

[0043] The above-mentioned embodiments of the present application are combined with the current actual demand, the protection scope is not limited to this, various changes made within the knowledge range of the person skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A flexible fireproof power cable with intelligent early warning, comprising a sheath (11), a filling layer (12) arranged inside the sheath (11), and a fire-retardant layer (13) arranged inside the filling layer (12), characterized in that: A plurality of outer temperature sensing components (2) are fixedly connected between the sheath (11) and the filling layer (12), a plurality of inner temperature sensing components (4) are fixedly connected between the filling layer (12) and the flame-retardant layer (13), and the inner temperature sensing components (4) are correspondingly arranged with the outer temperature sensing components (2); The outer temperature sensing components (2) and the inner temperature sensing components (4) are signal-connected with an intelligent early warning system carried on the cable maintenance platform, the intelligent early warning system comprises a warning sensing processing unit, an input end of the warning sensing processing unit is connected with a temperature sensing triggering unit and a meteorological data acquisition unit, and an output end of the warning sensing processing unit is connected with a hierarchical warning unit; The input end of the temperature sensing triggering unit is signal-connected with the outer temperature sensing components (2) and the inner temperature sensing components (4) respectively, the input end of the meteorological data acquisition unit is signal-connected with a weather station through the cable maintenance platform, and the output end of the hierarchical warning unit is signal-connected with an alarm, a display and a cable control end arranged on the cable maintenance platform.

2. A flexible fire resistant power cable with intelligent early warning according to claim 1, characterized in that: The outer temperature sensing components (2) comprise an outer sensing ring (21) fixedly arranged between the sheath (11) and the filling layer (12), a plurality of outer arc guiding pieces (22) are fixedly connected in the outer sensing ring (21) and uniformly distributed along the circumferential direction of the outer sensing ring (21), and outer elastic strips (23) extending into the filling layer (12) are fixedly connected to the inner ends of the outer arc guiding pieces (22). An outer sensing cavity is formed in the outer elastic strip (23), outer separation guide columns (231) are fixedly connected to the two inner wall surfaces of the outer sensing cavity which are perpendicular to the radial direction of the outer sensing ring (21), and an outer temperature variable strip (232) is fixedly connected between the two inner wall surfaces of the outer sensing cavity which are perpendicular to the radial direction of the outer sensing ring (21) and slidably sleeved outside the outer separation guide columns (231), and the input end of the temperature sensing triggering unit is signal-connected with the outer separation guide columns (231).

3. A flexible fire resistant power cable with intelligent early warning according to claim 2, characterized in that: The inner temperature sensing components (4) comprise an inner sensing ring (41) fixedly arranged between the filling layer (12) and the flame-retardant layer (13), a plurality of inner arc guiding pieces (42) are fixedly connected in the inner sensing ring (41) and uniformly distributed along the circumferential direction of the inner sensing ring (41), and inner elastic strips (43) extending into the filling layer (12) are fixedly connected to the outer ends of the inner arc guiding pieces (42). An inner sensing cavity is formed in the inner elastic strip (43), inner separation guide columns (431) are fixedly connected to the two inner wall surfaces of the inner sensing cavity which are perpendicular to the radial direction of the inner sensing ring (41), and an inner temperature variable strip (432) is fixedly connected between the two inner wall surfaces of the inner sensing cavity which are perpendicular to the radial direction of the inner sensing ring (41) and slidably sleeved outside the inner separation guide columns (431), and the input end of the temperature sensing triggering unit is signal-connected with the inner separation guide columns (431).

4. A flexible fire resistant power cable with intelligent early warning according to claim 3, characterized in that: The filling layer (12) is embedded with a plurality of isolation induction sleeves (6) uniformly distributed along the circumferential direction thereof, and the outer elastic strips (23), the inner elastic strips (43) and the isolation induction sleeves (6) are arranged in one-to-one correspondence, the outer elastic strips (23) and the inner elastic strips (43) are extended into the isolation induction sleeves (6) at one end close to each other, and are in sliding fit with the filling layer (12) and the isolation induction sleeves (6); The outer elastic strips (23) are fixedly connected with outer touch blocks (24) at one end close to the inner elastic strips (43), the inner elastic strips (43) are fixedly connected with inner touch blocks (44) at one end close to the outer elastic strips (23), and the outer touch blocks (24) and the inner touch blocks (44) are arranged in the isolation induction sleeves (6), and the input ends of the temperature sensing triggering unit are signal connected with the outer touch blocks (24) and the inner touch blocks (44) respectively.

5. A flexible fire resistant power cable with intelligent early warning according to claim 4, characterized in that: The temperature sensing triggering unit comprises an outer separation induction module, an inner separation induction module and a double-trigger induction module, the input ends of the outer separation induction module, the inner separation induction module and the double-trigger induction module are connected with a temperature sensing triggering processing module, and the output end of the temperature sensing triggering processing module is connected with an outer temperature abnormality module, an inner temperature abnormality module and a pre-warning abnormality module; The input end of the outer separation induction module is signal connected with an outer separation guide column (231), the input end of the inner separation induction module is signal connected with an inner separation guide column (431), the input end of the double-trigger induction module is signal connected with the outer touch blocks (24) and the inner touch blocks (44) respectively, and the output ends of the outer temperature abnormality module, the inner temperature abnormality module and the pre-warning abnormality module are signal connected with a pre-warning induction processing unit.

6. A flexible fire resistant power cable with intelligent early warning according to claim 3, characterized in that: Adjacent two of the outer arc guide pieces (22) are fixedly connected with outer balance strips (25), and adjacent two of the inner arc guide pieces (42) are fixedly connected with inner balance strips (45). In a normal state, the outer elastic strips (23) and the inner elastic strips (43) are in a contracted state, and the two outer separation guide columns (231) in cooperation are in abutting contact, and the two inner separation guide columns (431) in cooperation are in abutting contact.

7. A flexible fire resistant power cable with intelligent early warning according to claim 1, characterized in that: The hierarchical pre-warning unit comprises a no-abnormality display module, a first-level pre-warning display module, a second-level pre-warning triggering module, a third-level pre-warning triggering module and an emergency pre-warning triggering module, the input ends of the no-abnormality display module, the first-level pre-warning display module, the second-level pre-warning triggering module, the third-level pre-warning triggering module and the emergency pre-warning triggering module are signal connected with the pre-warning induction processing unit; The output ends of the no-abnormality display module and the first-level pre-warning display module are signal connected with a display arranged on a cable maintenance platform, the output ends of the second-level pre-warning triggering module and the third-level pre-warning triggering module are signal connected with an alarm and a display on the cable maintenance platform respectively, and the output end of the emergency pre-warning triggering module is signal connected with an alarm, a display and a cable control end arranged on the cable maintenance platform respectively.

8. A flexible fire resistant power cable with intelligent early warning according to claim 1, characterized in that: The input end of the early warning sensing processing unit is also connected with a cable application parameter setting unit, the input end of the cable application parameter setting unit is signal connected with a data input end arranged on the cable maintenance platform, the output end of the early warning sensing processing unit is also connected with a cable life prediction unit, and the output end of the cable life prediction unit is signal connected with a display arranged on the cable maintenance platform.

9. A flexible fire resistant power cable with intelligent early warning according to claim 1, characterized in that: A plurality of outer temperature accompanying sleeves (3) are fixedly connected between the sheath (11) and the filling layer (12), and the outer temperature accompanying sleeves (3) and the outer temperature sensing assembly (2) are arranged at intervals; a plurality of inner temperature accompanying sleeves (5) are fixedly connected between the filling layer (12) and the flame-retardant layer (13), and the inner temperature accompanying sleeves (5) and the inner temperature sensing assembly (4) are arranged at intervals.

10. A flexible fire resistant power cable with intelligent early warning according to claim 9, characterized in that: The outer temperature accompanying sleeves (3) and the inner temperature accompanying sleeves (5) are fixedly connected with heating conductors, and are also filled with mineral powder insulation fillers wrapping the heating conductors; the early warning sensing processing unit is also signal connected with a self-calibration verification unit, and the output end of the self-calibration verification unit is signal connected with the heating conductors.

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