An insulator with core rod monitoring function

Abstract

The invention discloses an insulator with a core rod monitoring function, and relates to the technical field of insulator core rods, including core rods. The invention facilitates detection of whether the load of a cable exceeds a threshold value through the cooperation of a sleeve and a tension sensor, thereby giving an early warning and improving the connection effect of the core rod. Through the cooperation of the insulator and a current transformer, it is convenient to detect changes in electric field distribution around the core rod and whether local discharge occurs, thereby improving the safety of the insulator. Through the cooperation of a temperature sensor and a heat-conducting sleeve, it is convenient to monitor the temperature change of the core rod in real time, thereby preventing insulator failure caused by overheating and even affecting the safety of the entire transmission line. Through the temperature conduction formula and the collected multi-faceted temperature data, calculation and comparison are performed, and only when it is determined that the abnormality is caused by non-environmental factors, a corresponding level of warning is issued, thereby effectively avoiding false alarms caused by ambient temperature fluctuations and greatly reducing the number of unnecessary alarms for operation and maintenance personnel.

Description

Technical Field

[0001] The invention relates to the technical field of insulator core rods, and in particular to an insulator with a core rod monitoring function. Background Art

[0002] Insulators can block the path of current in electrical systems, ensuring that current is transmitted along the established route to avoid leakage. In addition, they play an important role in stabilizing and supporting the electrical system, maintaining the reasonable position and state of related electrical components. The outer surface structure and characteristics of insulators help reduce electrical faults caused by the attachment of environmental pollutants.

[0003] When the insulator is used for a long time, the core rod may be damp, or there may be tiny cracks inside, which may damage the insulation. This may cause the electric field distribution around the core rod to change and local discharge to occur, thus reducing the safety of the line.

[0004] In the prior art, when monitoring the core rod inside the insulator, after determining that the detection data is abnormal, the operation and maintenance personnel are often directly notified to go for maintenance operations. When some abnormal situations are caused by abnormal monitoring data due to changes in ambient temperature, the operation and maintenance personnel are directly notified to go for maintenance operations, which not only wastes the time and energy of the operation and maintenance personnel, but also may cause the operation and maintenance personnel to become fatigued by the alarm signal, thereby ignoring the real problem and increasing the risk of missed detection;

[0005] Therefore, improvements need to be made based on the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to provide an insulator with a core rod monitoring function.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: an insulator with a core rod monitoring function, comprising a core rod, a plurality of insulators are installed at equal distances on the outer side of the core rod, and mounting grooves are opened at the upper and lower ends of the outer side of the core rod, a threaded barrel is arranged in the mounting groove, and an annular rubber pad is arranged at one end of each of the two threaded barrels, and the annular rubber pad is located in the mounting groove;

[0008] A monitoring component for monitoring the core rod inside the insulator is installed inside the insulator control box, and the monitoring component also includes a collection module, an analysis module and an execution module;

[0009] The acquisition module detects the temperature data of the core rod and the insulator, as well as the ambient temperature data, and transmits the detected temperature data to the analysis module;

[0010] The analysis module detects the temperature data transmitted by the acquisition module, and after eliminating the abnormal values ​​of the detected temperature data, determines the size of the temperature change, and determines the number of abnormal temperature locations to determine whether it is caused by detection errors. It then issues graded warnings based on the number, and transmits the generated warning signal to the execution module; it then determines whether the temperature abnormality is caused by changes in the ambient temperature;

[0011] The execution module, after receiving the first-level warning signal, promptly notifies the operation and maintenance personnel through text messages and pop-up windows of the monitoring system; after receiving the second-level warning signal, it sends out an audible and visual alarm through the audible and visual alarm to inform the operation and maintenance personnel in the nearby supervision area, and notifies the operation and maintenance personnel by phone.

[0012] Preferably, a mounting opening is formed through the top surface of the core rod, and a sleeve is formed at the upper and lower ends of the core rod, a thread is formed on the inner wall of the sleeve, and the sleeve is threadedly connected to the threaded barrel.

[0013] Preferably, one end of each of the two sleeves is provided with a connecting seat, the connecting seat is mounted on the sleeve by bolts, and a current transformer is provided on the outer side of the connecting seat, and the current transformer is mounted on the sleeve by bolts.

[0014] Preferably, a plurality of equidistant positioning rings are vertically arranged in the installation port, the positioning rings are installed on the inner wall of the core rod, one end of the two positioning rings at the upper and lower ends are provided with a battery, one end of the two batteries are provided with a connecting ring, the connecting ring is installed on the inner wall of the core rod, one end of the two connecting rings are provided with a tension sensor, one end of the tension sensor is installed on the connecting ring, and the other end of the tension sensor is installed on the inner wall of the sleeve.

[0015] Preferably, a plurality of equidistant heat-conducting sleeves are vertically arranged inside the core rod, the heat-conducting sleeves are placed between two adjacent positioning rings, and the cross-section of the heat-conducting sleeves is H-shaped.

[0016] Preferably, a plurality of equidistant guide openings are provided through the circumference of the inner bottom surface of the heat-conducting sleeve, and a temperature sensor is installed in the middle of the inner bottom surface of the heat-conducting sleeve.

[0017] Preferably, the analysis module determines temperature anomaly as follows:

[0018] Step 1: retrieve the historical temperature data of the mandrel, process multiple temperature data collected at the same time, calculate the mean a and standard deviation b of the multiple temperature data collected at the same time, set the fluctuation range of the temperature data to [a-2b, a+2b] according to the calculated mean a and standard deviation b, mark the temperature data that is not within the set temperature fluctuation range among the multiple temperature data collected at the same time as abnormal temperature data, and after eliminating the abnormal temperature data, calculate the average value of the remaining temperature data, and record the calculated temperature average value as the temperature data corresponding to the moment;

[0019] Step 2: Sort the temperature data at the corresponding time according to the collection time, and draw the corresponding coordinate points in the coordinate system constructed by the temperature and the collection time, then connect the adjacent coordinate points and calculate the slope of the connecting line segment, take the absolute value of the calculated slope, and compare the absolute value with the preset slope threshold. If the absolute value of the slope is greater than the preset slope threshold, it means that the temperature data change rate at the detection position exceeds the preset value during the time period corresponding to the absolute value of the slope, and the temperature change is determined to be abnormal.

[0020] Preferably, the analysis module determines the impact of ambient temperature as follows:

[0021] Step 1: Ambient temperature data at the insulator location Test, the temperature conduction formula between the environment and the core rod, the distance from the center of the core rod Temperature data at the location , is the temperature data of the core rod surface, is the thermal conductivity, is the outer diameter of the insulator; the total heat of composite heat transfer , is the insulator surface temperature, is the composite heat transfer coefficient; ;

[0022] Step 2: Detect the surface temperature data of the core rod and insulator, and substitute the detected temperature data into the formula In the middle, according to the distance from the center of the mandrel The detected temperature data at the position can be used to calculate the corresponding ambient temperature data. If the ratio of the calculated ambient temperature data to the detected ambient temperature data exceeds a preset threshold, it is determined that the temperature anomaly is not caused by ambient temperature changes; otherwise, it is determined to be caused by ambient temperature changes.

[0023] Preferably, the steps of the analysis module for performing graded warning are as follows:

[0024] Step 1: Expand the mandrel surface into a plane, mark the circular detection range of the temperature sensor, draw a square with the largest side length within the circular detection range, and use the square as the monitoring area of ​​the temperature sensor. Then, divide the mandrel expansion plane according to the size of the temperature sensor monitoring area, and record the number of detection blocks after division, and then record the number of detection blocks judged as abnormal temperature changes in the divided detection blocks;

[0025] Step 2: If the preset comparison threshold is 1 , it is determined that there are few abnormal temperature areas inside the core rod, a first-level warning signal is generated, and the first-level warning signal is transmitted to the execution module; if the preset comparison threshold is , it is determined that there are many abnormal temperature areas inside the core rod, a secondary warning signal is generated, and the secondary warning signal is transmitted to the execution module.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Through the cooperation of the threaded barrel and barrel sleeve with the annular rubber pad, the connection of the core rod is convenient and the firmness of the connection is improved. Through the cooperation of the barrel sleeve and the tension sensor, it is convenient to detect whether the load on the cable exceeds the threshold, so as to give an early warning and improve the connection effect of the core rod; through the cooperation of the insulator and the current transformer, it is convenient to detect the changes in the electric field distribution around the core rod and whether there is partial discharge, thereby improving the safety of the insulator; through the cooperation of the temperature sensor and the thermal conductive sleeve, it is convenient to monitor the temperature change of the core rod in real time to prevent the insulator failure caused by overheating and even affect the safety of the entire transmission line;

[0028] 2. Calculation and comparison are performed through the temperature conduction formula and the collected temperature data from various aspects. The corresponding level of warning is issued only when it is determined that the abnormality is caused by non-environmental factors, which effectively avoids false alarms caused by ambient temperature fluctuations and greatly reduces the number of unnecessary alarms for operation and maintenance personnel, allowing them to focus on the problems that really need to be dealt with. And through the graded warning mechanism, the operation and maintenance resources are reasonably allocated according to the differentiated treatment methods according to the severity of the abnormality, which greatly improves the efficiency of the operation and maintenance work, ensuring a rapid response when facing a truly serious core rod problem and ensuring the safety of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 It is a schematic diagram of the overall three-dimensional structure proposed by the present invention;

[0031] Figure 2It is a schematic diagram of the overall cross-sectional three-dimensional structure proposed by the present invention;

[0032] Figure 3 This is a schematic diagram of the three-dimensional structure of the mandrel and the threaded barrel proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the cross-sectional three-dimensional structure of the heat-conducting sleeve proposed by the present invention;

[0034] Figure 5 The present invention proposes Figure 2 A schematic diagram of the enlarged structure of the middle A part;

[0035] Figure 6 It is a system flow chart of the present invention.

[0036] Serial numbers in the figure: 1. core rod; 2. insulator; 3. threaded barrel; 4. ring-shaped rubber pad; 5. barrel sleeve; 6. connecting seat; 7. current transformer; 8. positioning ring; 9. battery; 10. connecting ring; 11. tension sensor; 12. thermal conductive sleeve; 13. temperature sensor. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Example: See Figure 1-6 An insulator with a core rod monitoring function in the present invention comprises a core rod 1, a plurality of equidistant insulators 2 are installed on the outer side of the core rod 1, and installation grooves are provided at the upper and lower ends of the outer side of the core rod 1, and threaded barrels 3 are provided in the installation grooves, and an annular rubber pad 4 is provided at one end of the two threaded barrels 3, and the annular rubber pad 4 is located in the installation groove; the insulator 2 is conveniently installed through the core rod 1; the barrel sleeve 5 is conveniently connected through the threaded barrel 3; the friction force is increased by the annular rubber pad 4, so that the barrel sleeve 5 is conveniently connected to the threaded barrel 3; the top surface of the core rod 1 is provided with an installation opening, and the upper and lower ends of the core rod 1 are provided with barrel sleeves 5, The inner wall of the sleeve 5 is provided with threads, and the sleeve 5 is threadedly connected to the threaded sleeve 3; the sleeve 5 is used to facilitate the installation of the connecting seat 6 and the current transformer 7; one end of each of the two sleeves 5 is provided with a connecting seat 6, which is installed on the sleeve 5 by bolts, and a current transformer 7 is provided on the outer side of the connecting seat 6, which is installed on the sleeve 5 by bolts; the connection of the core rod 1 is facilitated by the connecting seat 6; the current transformer 7 is used to facilitate the detection of changes in the electric field distribution around the core rod 1 and whether local discharge occurs, and the model of the current transformer 7 is LZZBJ9-10.

[0039] A monitoring component for monitoring the core rod 1 inside the insulator 2 is installed inside the control box of the insulator 2, and the monitoring component also includes a collection module, an analysis module and an execution module;

[0040] Retrieve the historical temperature data of the core rod 1, process multiple temperature data collected at the same time, calculate the mean a and standard deviation b of the multiple temperature data collected at the same time, set the fluctuation range of the temperature data to [a-2b, a+2b] according to the calculated mean a and standard deviation b, mark the temperature data that is not within the set temperature fluctuation range among the multiple temperature data collected at the same time as abnormal temperature data, and after eliminating the abnormal temperature data, calculate the average value of the remaining temperature data, and record the calculated temperature average value as the temperature data corresponding to the moment;

[0041] The temperature data at the corresponding time is sorted according to the collection time, and the corresponding coordinate points are drawn in the coordinate system constructed by the temperature and the collection time, and then the adjacent coordinate points are connected, and the slope of the connecting line segment is calculated. The calculated slope is taken as an absolute value, and the absolute value is compared with the preset slope threshold. If the absolute value data of the slope is greater than the preset slope threshold, it means that the temperature data change speed at the detection position exceeds the preset value in the time period corresponding to the absolute value of the slope, and the temperature change is determined to be abnormal;

[0042] Ambient temperature data at insulator 2 Test, the temperature conduction formula between the environment and the core rod 1, the distance from the center of the core rod 1 Temperature data at the location , is the temperature data of the surface of core rod 1, is the thermal conductivity, is the outer diameter of insulator 2; total heat of composite heat transfer , is the insulator surface temperature, is the composite heat transfer coefficient; ;

[0043] The surface temperature data of core rod 1 and insulator 2 are detected, and the detected temperature data are substituted into the formula In the middle, according to the distance from the center of mandrel 1 The detected temperature data at the position can be used to calculate the corresponding ambient temperature data. If the ratio of the calculated ambient temperature data to the detected ambient temperature data exceeds a preset threshold, it is determined that the temperature abnormality is not caused by the ambient temperature change; otherwise, it is determined to be caused by the ambient temperature change, and a signal is transmitted to control the ventilation equipment installed at the position of the insulator 2 to work, speed up the air flow rate, take away the heat at the position of the core rod 1, and reduce the temperature of the core rod 1;

[0044] For temperature anomalies caused by non-ambient temperature changes, the degree of urgency is divided; the surface of the core rod 1 is expanded into a plane, the circular detection range of the temperature sensor 13 is marked, and then a square with the largest side length is drawn within the circular detection range, and the square is used as the monitoring area of ​​the temperature sensor 13. Then, the expanded plane of the core rod 1 is divided according to the size of the monitoring area of ​​the temperature sensor 13, and the number of detection blocks after division is recorded. Then, the number of detection blocks judged as abnormal temperature changes in the detection blocks after division is recorded. If the preset comparison threshold is , it is determined that the temperature abnormality inside the core rod 1 is small, a first-level warning signal is generated, and the first-level warning signal is transmitted to the execution module, and the execution module promptly notifies the operation and maintenance personnel through SMS and monitoring system pop-up windows; if the preset comparison threshold is , it is determined that there are many abnormal temperature areas inside the core rod 1, and a secondary warning signal is generated and transmitted to the execution module. The execution module sends an audible and visual alarm through an audible and visual alarm to inform the operation and maintenance personnel in the nearby supervision area, and notifies the operation and maintenance personnel by telephone.

[0045] In the present invention, a plurality of equally spaced positioning rings 8 are vertically arranged in the installation opening, and the positioning rings 8 are installed on the inner wall of the core rod 1. One end of the two positioning rings 8 at the upper and lower ends is provided with a battery 9, and one end of the two batteries 9 is provided with a connecting ring 10, which is installed on the inner wall of the core rod 1. One end of the two connecting rings 10 is provided with a tension sensor 11, and one end of the tension sensor 11 is installed on the connecting ring 10, and the other end of the tension sensor 11 is installed on the inner wall of the cylinder sleeve 5; the positioning ring 8 is convenient for installing the battery 9 and the heat-conducting sleeve 12; the battery 9 is convenient for providing power; the connecting ring 10 is convenient for installing the tension sensor sensor 11; the tension sensor 11 is used to evaluate whether its mechanical properties are in a normal state, and the model of the tension sensor 11 is NQ1; a plurality of equidistant heat-conducting sleeves 12 are vertically arranged inside the core rod 1, the heat-conducting sleeve 12 is placed between two adjacent positioning rings 8, and the cross-section of the heat-conducting sleeve 12 is H-shaped; a plurality of equidistant guide openings are opened through the circumference of the inner bottom surface of the heat-conducting sleeve 12, and a temperature sensor 13 is installed in the middle of the inner bottom surface of the heat-conducting sleeve 12; the heat-conducting sleeve 12 is used to absorb the heat generated by the insulator 2; the temperature sensor 13 is used to monitor the temperature value change in real time and prompt the operation and maintenance personnel to conduct further investigation.

[0046] Working principle: When the present invention is used, firstly, a plurality of insulators 2 are installed on the outside of the core rod 1, then the threaded barrel 3 is fixed, and then the barrel sleeve 5 is threadedly connected with the threaded barrel 3. When the barrel sleeve 5 is installed at the upper and lower ends of the core rod 1, the tension sensors 11 at the upper and lower ends of the core rod 1 are connected to the barrel sleeve 5, and then the current transformer 7 is installed on the barrel sleeve 5, and then the connecting seat 6 is installed on the barrel sleeve 5, and then the core rod 1 and the cable are installed through the connecting seat 6; when the wind force is too strong, the cable will pull the connecting seat 6, thereby pulling the barrel sleeve 5, and the tension sensor 11 will monitor whether the tension is within the threshold. During the value period, the core rod 1 is prevented from being damaged due to long-term excessive stress or the like; if the core rod 1 is locally overheated during operation, the temperature sensor 13 can monitor the temperature value change in real time. Once the temperature exceeds the normal operating temperature range, an early warning signal can be issued in time to prompt the operation and maintenance personnel to conduct further investigation to prevent the insulator 2 from failing due to overheating and even affecting the safety of the entire transmission line; the electric field distribution changes around the core rod 1 and whether local discharge occurs are monitored through the current transformer 7. When a problem is found in the monitoring, an early warning can be issued in time.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insulator with a core rod monitoring function, comprising a core rod (1), characterized in that: A plurality of equidistant insulators (2) are mounted on the outside of the core rod (1), and mounting grooves are provided at the upper and lower ends of the outside of the core rod (1), a threaded barrel (3) is provided in the mounting groove, and an annular rubber pad (4) is provided at one end of each of the two threaded barrels (3), and the annular rubber pad (4) is located in the mounting groove; A monitoring component for monitoring the core rod (1) inside the insulator (2) is installed inside the control box of the insulator (2), and the monitoring component also includes a collection module, an analysis module and an execution module; A collection module detects temperature data of the core rod (1) and the insulator (2), as well as ambient temperature data, and transmits the detected temperature data to the analysis module; The analysis module detects the temperature data transmitted by the acquisition module, and after eliminating the abnormal values ​​of the detected temperature data, determines the magnitude of the temperature change, and determines the number of abnormal temperature locations to determine whether it is caused by a detection error. It then makes a graded warning based on the number, and transmits the generated warning signal to the execution module; it then determines whether the temperature abnormality is caused by a change in the ambient temperature; The analysis module determines the impact of ambient temperature as follows: Step 1: The ambient temperature data at the insulator (2) position The temperature conduction formula between the environment and the core rod (1) is measured at a distance from the center of the core rod (1). Temperature data at the location , is the temperature data of the surface of the mandrel (1), is the thermal conductivity, is the outer diameter of the insulator (2); the total heat of the composite heat transfer , is the insulator surface temperature, is the composite heat transfer coefficient; ; Step 2: Detect the surface temperature data of the core rod (1) and the insulator (2), and substitute the detected temperature data into the formula In the middle, according to the distance from the center of the mandrel (1) The detected temperature data at the position can be used to calculate the corresponding ambient temperature data. If the ratio of the calculated ambient temperature data to the detected ambient temperature data exceeds a preset threshold, it is determined that the temperature anomaly is not caused by ambient temperature changes; otherwise, it is determined to be caused by ambient temperature changes; The execution module, after receiving the first-level warning signal, promptly notifies the operation and maintenance personnel through text messages and pop-up windows of the monitoring system; after receiving the second-level warning signal, it sends out an audible and visual alarm through the audible and visual alarm to inform the operation and maintenance personnel in the nearby supervision area, and notifies the operation and maintenance personnel by phone.

2. The insulator with core rod monitoring function according to claim 1, characterized in that: The top surface of the core rod (1) is provided with a mounting opening, and the upper and lower ends of the core rod (1) are provided with a sleeve (5), the inner wall of the sleeve (5) is provided with a thread, and the sleeve (5) is threadedly connected to the threaded barrel (3).

3. The insulator with core rod monitoring function according to claim 2, characterized in that: One end of each of the two sleeves (5) is provided with a connection seat (6), the connection seat (6) being mounted on the sleeve (5) by means of bolts, and a current transformer (7) being provided outside the connection seat (6), the current transformer (7) being mounted on the sleeve (5) by means of bolts.

4. The insulator with core rod monitoring function according to claim 3, characterized in that: A plurality of equidistant positioning rings (8) are vertically arranged in the installation opening, the positioning rings (8) are installed on the inner wall of the core rod (1), one end of the two positioning rings (8) at the upper and lower ends are provided with a battery (9), one end of the two batteries (9) are provided with a connecting ring (10), the connecting ring (10) is installed on the inner wall of the core rod (1), one end of the two connecting rings (10) are provided with a tension sensor (11), one end of the tension sensor (11) is installed on the connecting ring (10), and the other end of the tension sensor (11) is installed on the inner wall of the cylinder sleeve (5).

5. The insulator with core rod monitoring function according to claim 4, characterized in that: A plurality of equidistant heat-conducting sleeves (12) are vertically arranged inside the core rod (1); the heat-conducting sleeves (12) are placed between two adjacent positioning rings (8), and the cross-section of the heat-conducting sleeves (12) is H-shaped.

6. The insulator with core rod monitoring function according to claim 5, characterized in that: A plurality of equidistant guide openings are provided through the circumference of the inner bottom surface of the heat-conducting sleeve (12), and a temperature sensor (13) is installed in the middle of the inner bottom surface of the heat-conducting sleeve (12).

7. The insulator with core rod monitoring function according to claim 1, characterized in that: The analysis module determines temperature anomalies as follows: Step 1: retrieve the historical temperature data of the core rod (1), process multiple temperature data collected at the same time, calculate the mean a and standard deviation b of the multiple temperature data collected at the same time, set the fluctuation range of the temperature data to [a-2b, a+2b] according to the calculated mean a and standard deviation b, mark the temperature data that is not within the set temperature fluctuation range among the multiple temperature data collected at the same time as abnormal temperature data, remove the abnormal temperature data, calculate the average value of the remaining temperature data, and record the calculated temperature average value as the temperature data corresponding to the time; Step 2: Sort the temperature data at the corresponding time according to the collection time, and draw the corresponding coordinate points in the coordinate system constructed by the temperature and the collection time, then connect the adjacent coordinate points and calculate the slope of the connecting line segment, take the absolute value of the calculated slope, and compare the absolute value with the preset slope threshold. If the absolute value of the slope is greater than the preset slope threshold, it means that the temperature data change rate at the detection position exceeds the preset value during the time period corresponding to the absolute value of the slope, and the temperature change is determined to be abnormal.

8. The insulator with core rod monitoring function according to claim 7, characterized in that: The steps for the analysis module to perform graded warning are as follows: Step 1: unfolding the surface of the core rod (1) into a plane, marking the circular detection range of the temperature sensor (13), then drawing a square with the largest side length within the circular detection range, with the square being the monitoring area of ​​the temperature sensor (13), then dividing the unfolded plane of the core rod (1) according to the size of the monitoring area of ​​the temperature sensor (13), and recording the number of detection blocks after division, and then recording the number of detection blocks determined to have abnormal temperature changes among the detection blocks after division; Step 2: If the preset comparison threshold is 1 , it is determined that the core rod (1) has fewer internal temperature anomalies, a first-level warning signal is generated, and the first-level warning signal is transmitted to the execution module; if the preset comparison threshold is , it is determined that there are many abnormal temperature locations inside the core rod (1), a secondary warning signal is generated, and the secondary warning signal is transmitted to the execution module.

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