Low-temperature-resistant cable suitable for high-cold regions

Abstract

This invention relates to a low-temperature resistant cable suitable for use in cold regions, applied in the field of cable technology. The cable includes a low-temperature resistant cable body with an icing detection mechanism. The icing detection mechanism includes a cable support cylinder with a sliding sealing partition inside, the top of which is fixedly connected to an ice detection plate. Below the sliding sealing partition are a heater and a lower air pressure sensor fixedly installed on the inner wall of the cable support cylinder. Above the sliding sealing partition are an upper air pressure sensor and a distance sensor fixedly installed on the inner wall of the cable support cylinder. When ice forms on the cable surface, the icing detection mechanism monitors the thickness of the ice layer and automatically issues an alarm when the ice layer reaches a certain thickness. This prompts relevant technicians to promptly address the ice layer on the cable surface, effectively improving the reliability and safety of the cable when used in cold regions.

Description

Technical Field

[0001] This invention relates to a low-temperature resistant cable, and more particularly to a low-temperature resistant cable suitable for use in cold regions, applied in the field of cable technology. Background Technology

[0002] In high-altitude and frigid regions, due to their unique geographical and climatic characteristics, extreme low temperatures and even frigid weather are often encountered. Low-temperature environments have a significant impact on cable performance, so cables used in outdoor environments in high-altitude and frigid regions need to have good low-temperature resistance.

[0003] In the prior art, a common method to improve the low-temperature resistance of cables is to improve the materials. For example, Chinese Patent No. CN118262956B discloses a low-temperature resistant medium-voltage power cable, and Chinese Patent No. CN113539559B discloses a low-temperature resistant crack-resistant cable.

[0004] While improving materials can effectively enhance the low-temperature resistance of cables, the challenges they face in high-altitude and frigid outdoor environments extend beyond just low temperatures. Low temperatures also easily lead to ice formation on the cable surface. When the ice layer reaches a certain thickness, timely manual intervention is necessary to properly treat the ice layer; otherwise, it may cause mechanical damage, decreased insulation performance, or even cable failure. Adding a function to monitor ice thickness and provide early warnings to existing low-temperature resistant cables would significantly improve their reliability and safety in high-altitude and frigid regions. Therefore, we propose a low-temperature resistant cable suitable for high-altitude and frigid regions. Summary of the Invention

[0005] The technical problem to be solved by the present invention in view of the above-mentioned prior art is: how to monitor the thickness of the ice layer when the cable surface is icy, and to issue an alarm when the ice layer thickness reaches a certain threshold.

[0006] To address the aforementioned problems, this invention provides a low-temperature resistant cable suitable for cold regions, comprising a low-temperature resistant cable body with an icing detection mechanism. The icing detection mechanism includes a cable support cylinder through which the low-temperature resistant cable body passes and is sealed and fixedly connected. A sliding sealing partition is slidably and sealed within the cable support cylinder. The low-temperature resistant cable body passes through the sliding sealing partition and is slidably and sealed thereto. An ice detection plate is fixedly connected to the top of the sliding sealing partition. The ice detection plate is shaped like an arc matching the low-temperature resistant cable body, and its inner diameter is larger than the diameter of the low-temperature resistant cable body. The plate penetrates the top outer wall of the cable support cylinder and is slidably and sealingly connected to it. Below the sliding seal plate, a heater and a lower air pressure sensor are fixedly installed on the inner wall of the cable support cylinder. Above the sliding seal plate, an upper air pressure sensor and a distance sensor are fixedly installed on the inner wall of the cable support cylinder. The distance sensor is located directly above the sliding seal plate. An elastic pull rope is fixedly connected between the sliding seal plate and the bottom inner wall of the cable support cylinder. The icing detection and alarm mechanism also includes an icing detection intelligent control system, which includes an icing detection setting module, an icing detection control module, an icing detection analysis module, and a remote early warning module.

[0007] In the aforementioned low-temperature resistant cables suitable for cold regions, when ice forms on the cable surface, the icing detection and alarm mechanism can monitor the thickness of the ice layer on the cable surface, and will automatically issue an alarm when the ice layer reaches a certain thickness.

[0008] As a further improvement of this application, the ice detection setting module is signal-connected to the ice detection control module and the ice detection analysis module. The ice detection control module is signal-connected to the heater, the lower air pressure sensor, the upper air pressure sensor, the distance sensor, and the ice detection analysis module. The distance sensor is signal-connected to the ice detection analysis module, and the ice detection analysis module is signal-connected to the remote early warning module.

[0009] As a further improvement of this application, a temperature sensor is also provided below the sliding seal partition and fixedly installed on the inner wall of the cable support cylinder, and the ice detection control module is connected to the temperature sensor signal.

[0010] As a further improvement of this application, both sides of the ice detection plate are provided with matching hot plate strips. The hot plate strips consist of a fast guide section and a slow guide section that matches the fast guide section. The slow guide section is fixedly installed at the bottom end of the fast guide section. The slow guide section passes through the sliding seal partition and is slidably sealed to it. The top end of the fast guide section is fixedly connected to the inner wall of the top end of the cable support cylinder.

[0011] As a further improvement of this application, both the fast conduction section and the slow conduction section are made of thermally conductive materials, and the thermal conductivity of the slow conduction section is better than that of the fast conduction section.

[0012] As a further improvement of this application, the top of the ice detection plate is flush with the top of the cable support cylinder, and both the cable support cylinder and the sliding seal partition are made of heat insulation material.

[0013] As a further improvement of this application, the icing detection mechanism also includes a straightening ring fixedly sleeved on the low-temperature resistant cable body. A straightening rod is fixedly connected between the straightening ring and the cable support cylinder. The straightening ring is located above the cable support cylinder, and the portion of the low-temperature resistant cable body between the straightening ring and the cable support cylinder is straight.

[0014] As a further improvement of this application, a pressure relief pipe is connected to the side wall of the cable support cylinder, and a pressure relief cylinder is connected to the end of the pressure relief pipe away from the cable support cylinder. An elastic pressure relief membrane is embedded through the outer wall of the end of the pressure relief cylinder away from the pressure relief pipe, and the pressure relief pipe is located above the sliding seal partition.

[0015] As another improvement of this application, the icing detection and alarm mechanism also includes a weather detection and alarm component, which includes a weather support cylinder, which is fixedly connected to the cable support cylinder. A humidity sensor is fixedly installed on the outer wall of the weather support cylinder. A temperature measuring contact and an alarm button are fixedly installed inside the humidity sensor. A trigger plate is fixedly connected to the end of the temperature measuring contact near the alarm button. The icing detection intelligent control system also includes an analysis and alarm module.

[0016] As a supplement to another improvement of this application, the weathering support cylinder is made of thermally conductive material, the temperature measuring contact is made of shape memory alloy material with two-way memory effect, the temperature measuring contact is in the high-temperature phase state, the length of the low-temperature phase state of the temperature measuring contact is greater than the length of its high-temperature phase state, the phase transition temperature of the temperature measuring contact is ℃, the start button and the ice detection analysis module are both signal connected to the analysis start module, and the analysis start module is signal connected to the humidity sensor and the ice detection control module.

[0017] In summary, this application, through the installation of an icing detection and alarm mechanism, allows for monitoring of the ice thickness on the cable surface when ice forms. When the ice reaches a certain thickness, an automatic alarm is triggered, prompting relevant technicians to promptly address the ice layer and effectively improving the reliability and safety of cables used in cold regions. Furthermore, the combined installation of weather-measuring and analysis-based detection modules ensures that the icing detection and alarm mechanism only monitors the ice thickness on the cable surface when climatic conditions meet the requirements for icing. This improves the effectiveness of monitoring, avoids ineffective or unnecessary monitoring, reduces energy consumption, increases the operational endurance of the icing detection and alarm mechanism, and significantly enhances its practicality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0019] Figure 2This is a front view structural diagram of the first embodiment of this application;

[0020] Figure 3 This is a front cross-sectional view of the cable support cylinder in the first embodiment of this application;

[0021] Figure 4 This is a top view of the cross-sectional structure of the cable support cylinder in the first embodiment of this application;

[0022] Figure 5 This is a cross-sectional view of the pressure relief cylinder in the first embodiment of this application;

[0023] Figure 6 This is a system structure block diagram of the ice detection intelligent control system in the first embodiment of this application;

[0024] Figure 7 This is a three-dimensional structural diagram of the second embodiment of this application;

[0025] Figure 8 This is a cross-sectional view of the weathering support cylinder in the second embodiment of this application;

[0026] Figure 9 This is a system structure block diagram of the ice detection intelligent control system in the second embodiment of this application.

[0027] Explanation of the labels in the diagram:

[0028] 001. Low-temperature resistant cable body; 201. Cable support cylinder; 202. Sliding seal partition; 203. Ice detector plate; 204. Heater; 205. Lower air pressure sensor; 206. Upper air pressure sensor; 207. Elastic pull rope; 208. Distance sensor; 209. Temperature sensor; 210. Heating plate; 101. Fast conductor section; 102. Slow conductor section; 211. Straightening ring; 212. Straightening rod; 213. Pressure relief pipe; 214. Pressure relief cylinder; 215. Elastic pressure relief diaphragm; 301. Weathering support cylinder; 302. Humidity sensor; 303. Temperature measuring contact element; 304. Trigger plate; 305. Starter button. Detailed Implementation

[0029] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0030] First implementation method:

[0031] Figures 1-6This invention illustrates a low-temperature resistant cable suitable for high-altitude and cold regions, comprising a low-temperature resistant cable body 001 (the low-temperature resistant cable body 001 adopts existing technology, and its specific structure is not described in detail here). An icing detection mechanism is provided on the low-temperature resistant cable body 001. The icing detection mechanism includes a cable support cylinder 201, through which the low-temperature resistant cable body 001 passes and is sealed and fixedly connected. A sliding sealing partition 202 is provided inside the cable support cylinder 201 and is slidably and sealed therewith. The low-temperature resistant cable body 001 passes through the sliding sealing partition 202 and is slidably and sealed therewith. An ice detection plate 203 is fixedly connected to the top of the sliding sealing partition 202. The ice detection plate 203 is configured in an arc shape matching the low-temperature resistant cable body 001, and the inner diameter of the ice detection plate 203 is larger than that of the low-temperature resistant cable body 001. The diameter of 01, the ice detection plate 203 penetrates the top outer wall of the cable support cylinder 201 and is slidably and sealingly connected to it, the lower part of the sliding seal partition 202 is provided with a heater 204 and a lower air pressure sensor 205 fixedly installed on the inner wall of the cable support cylinder 201, the upper part of the sliding seal partition 202 is provided with an upper air pressure sensor 206 and a distance sensor 208 fixedly installed on the inner wall of the cable support cylinder 201, the distance sensor 208 is located directly above the sliding seal partition 202, the lower part of the sliding seal partition 202 and the bottom inner wall of the cable support cylinder 201 are fixedly connected with an elastic pull rope 207, the ice detection alarm mechanism also includes an ice detection intelligent control system, the ice detection intelligent control system includes an ice detection setting module, an ice detection control module, an ice detection analysis module and a remote early warning module.

[0032] Based on the actual situation and the performance of the low-temperature resistant cable 001, a reasonable ice thickness warning threshold is set (when the ice thickness on the surface of the low-temperature resistant cable 001 reaches the warning threshold, an alarm needs to be triggered). Let the warning threshold be L, the diameter of the low-temperature resistant cable 001 be D1, and the inner diameter of the ice detection plate 203 be D2. Then, half of the difference between D2 and D1 matches L. The detection cycle, air pressure difference threshold, and distance threshold are reasonably set through the ice detection analysis module. The ice detection control module will periodically perform the operation of detecting the ice thickness on the surface of the low-temperature resistant cable 001 according to the detection cycle. During the detection, the ice detection analysis module will activate the heater 204, the lower air pressure sensor 205, the upper air pressure sensor 206, and the distance sensor 208. The heater 204 is used to heat the air in the area below the sliding seal partition 202, causing the air pressure below the sliding seal partition 202 to increase. The lower air pressure sensor 205... 05. The upper air pressure sensor 206 is used to monitor the air pressure in the area below the sliding seal partition 202 and the area above the sliding seal partition 202, respectively. The air pressure data monitored by the lower air pressure sensor 205 and the upper air pressure sensor 206 are transmitted to the ice detection control module in real time. The distance sensor 208 is used to monitor the distance between itself and the sliding seal partition 202. The distance data monitored by the distance sensor 208 is transmitted to the ice detection analysis module in real time. When the air pressure difference between the area below the sliding seal partition 202 and the area above the sliding seal partition 202 reaches the air pressure difference threshold, the ice detection control module will turn off the heater 204 to stop heating. At the same time, the ice detection control module will send a signal to the ice detection analysis module, so that the ice detection analysis module records the distance data monitored by the distance sensor 208 at this time as the measured distance. The measured distance is compared with the distance threshold to determine whether the ice thickness has reached the warning threshold.

[0033] If the ice thickness does not reach the distance threshold, under the influence of the air pressure difference, the ice detection plate 203 can smoothly slide outward from the cable support cylinder 201, and the distance moved by the ice detection plate 203 will be relatively long. Ultimately, the distance between the ice detection plate 203 and the distance sensor 208 will be relatively small, so the measured distance will be less than the distance threshold. Conversely, if the ice thickness has reached the alarm threshold, the ice layer will hinder the sliding of the ice detection plate 203, making it difficult for the ice detection plate 203 to slide outward from the cable support cylinder 201. In this case, the distance moved by the ice detection plate 203 will be relatively short, or even zero. 3. The distance between the ice layer sensor 208 and the distance sensor 208 will be relatively large, so the measured distance will be greater than the distance threshold. Therefore, the ice detection analysis module can determine whether the ice layer thickness has reached the alarm threshold by comparing the measured distance with the distance threshold. When the judgment result is that the ice layer thickness has reached the alarm threshold, the ice detection analysis module will control the remote warning module to send an alarm signal to relevant technical personnel (remote warning is existing technology and will not be described in detail here). After the judgment is completed, the detection ends, and the ice detection control module will automatically shut down the lower air pressure sensor 205, the upper air pressure sensor 206, and the distance sensor 208.

[0034] Therefore, by setting up an icing detection and alarm mechanism, when ice forms on the cable surface, the mechanism can monitor the thickness of the ice layer. When the ice layer reaches a certain thickness, it will automatically issue an alarm, prompting relevant technicians to promptly address the ice layer on the cable surface. This effectively improves the reliability and safety of the cable when used in cold regions. In addition, after the test, the heat generated during the test will gradually be transferred along the low-temperature resistant cable body 001, which can heat the low-temperature resistant cable body 001 to a certain extent. On the one hand, this can reduce the damage to the cable caused by low temperature and icing to a certain extent; on the other hand, it can indirectly and further improve the low-temperature resistance of the cable to a certain extent.

[0035] The ice detection setting module is signal-connected to the ice detection control module and the ice detection analysis module. The ice detection control module is signal-connected to the heater 204, the lower air pressure sensor 205, the upper air pressure sensor 206, the distance sensor 208, and the ice detection analysis module. The distance sensor 208 is signal-connected to the ice detection analysis module, and the ice detection analysis module is signal-connected to the remote early warning module. A temperature sensor 209 is also fixedly installed on the inner wall of the cable support cylinder 201 below the sliding seal partition 202. The ice detection control module is signal-connected to the temperature sensor 209. A reasonable temperature threshold is set through the ice detection analysis module. During detection, the sliding seal partition 202 activates the heater 204, the lower air pressure sensor 205, etc., and also activates the temperature sensor 209. The temperature sensor 209 is used to monitor the temperature in the area below the sliding seal partition 202, and the temperature data monitored by the temperature sensor 209 is transmitted in real time. Under normal circumstances, when the air pressure difference between the upper and lower sides of the sliding seal partition 202 reaches the air pressure difference threshold, the temperature in the area below the sliding seal partition 202 should be lower than the temperature threshold. However, when abnormal situations such as malfunction of the lower air pressure sensor 205 or the upper air pressure sensor 206 occur, the temperature in the area below the sliding seal partition 202 may rise abnormally. To prevent the low-temperature resistant cable 001 from being damaged or even catching fire due to excessive temperature, the ice detection control module will promptly shut down the heater 204 to stop heating when the temperature data exceeds the temperature threshold. At the same time, the ice detection control module will also send a signal to the ice detection analysis module, which will control the remote early warning module to send corresponding alarm information to relevant technicians, prompting them to come and maintain the ice detection alarm mechanism. This improves the reliability and safety of the ice detection alarm mechanism, and further enhances the reliability and safety of the cable.

[0036] The top of the ice detection plate 203 is flush with the top of the cable support cylinder 201 to prevent ice from forming on the inner wall of the ice detection plate 203 near the low-temperature resistant cable body 001, which would affect the accuracy of the detection. The cable support cylinder 201 and the sliding seal partition 202 are both made of heat insulation materials, which can reduce heat loss.

[0037] The icing detection mechanism also includes a straightening ring 211 fixedly sleeved on the low-temperature resistant cable body 001. A straightening rod 212 is fixedly connected between the straightening ring 211 and the cable support cylinder 201. The straightening ring 211 is located above the cable support cylinder 201, and the part of the low-temperature resistant cable body 001 between the straightening ring 211 and the cable support cylinder 201 is straight to avoid bending of the part of the low-temperature resistant cable body 001 between the straightening ring 211 and the cable support cylinder 201, which would affect the accuracy of the detection.

[0038] Both sides of the ice detection plate 203 are equipped with matching hot plate strips 210. Each hot plate strip 210 consists of a fast-conducting section 101 and a slow-conducting section 102 matching the fast-conducting section 101. The slow-conducting section 102 is fixedly installed at the bottom end of the fast-conducting section 101, and passes through the sliding seal partition 202 and is slidably and sealingly connected to it. The top end of the fast-conducting section 101 is fixedly connected to the inner wall of the top end of the cable support cylinder 201. Both the fast-conducting section 101 and the slow-conducting section 102 are made of thermally conductive material, and the thermal conductivity of the slow-conducting section 102 is superior to that of the fast-conducting section 101. During the detection process, when the heater 204 heats the area below the sliding seal partition 202, the slow-conducting section 102 can transfer some of the heat to the ice detection plate 203 at a relatively fast speed, thereby heating the ice detection plate 203 to a certain extent. This allows the ice to be dissipated to a certain degree if there is ice at the top of the ice detection plate 203. To prevent the ice at the top of the ice detector plate 203 from melting, thus avoiding the ice at the top of the ice detector plate 203 preventing it from sliding out of the cable support cylinder 201 and thus avoiding affecting the accuracy of the detection. As heating proceeds, the sliding seal partition 202 will drive the ice detector plate 203 to move upward. When the bottom of the sliding seal partition 202 is higher than the bottom of the fast conductor section 101, that is, after part of the ice detector plate 203 has slid out of the cable support cylinder 201, the fast conductor section 101 will transfer heat to the ice detector plate 203 at a relatively slow speed. This can prevent the ice on the surface of the ice detector plate 203 from freezing and making it difficult for the ice detector plate 203 to return to its original position during the process of the ice detector plate 203 extending out of the cable support cylinder 201. In addition, since the heat transfer speed is relatively slow at this time, it is difficult to completely melt the ice on the surface of the low temperature resistant cable body 001, thus ensuring the accuracy of the detection.

[0039] A pressure relief pipe 213 is connected to the side wall of the cable support cylinder 201. The end of the pressure relief pipe 213 away from the cable support cylinder 201 is connected to a pressure relief cylinder 214. An elastic pressure relief diaphragm 215 is embedded through the outer wall of the end of the pressure relief cylinder 214 away from the pressure relief pipe 213. The pressure relief pipe 213 is located above the sliding seal partition 202. The heat conduction of the slow conduction section 102 and the fast conduction section 101 will affect the formation of the air pressure difference between the upper and lower sides of the sliding seal partition 202 to a certain extent. When the air pressure in the area above the sliding seal partition 202 increases, the elastic pressure relief diaphragm 215 will bulge outward from the pressure relief cylinder 214, thereby playing a pressure relief role, which is conducive to the formation of the air pressure difference between the upper and lower sides of the sliding seal partition 202 and ensures that the test can be carried out smoothly.

[0040] Second implementation method:

[0041] Figures 7-9 This invention discloses a low-temperature resistant cable suitable for high-altitude and cold regions. Unlike the first embodiment, the icing detection alarm mechanism further includes a weathering detection component. This component includes a weathering support cylinder 301, which is fixedly connected to a cable sheathing support cylinder 201. A humidity sensor 302 is fixedly installed on the outer wall of the weathering support cylinder 301. A temperature sensing contact 303 and a starter button 305 are fixedly installed inside the humidity sensor 302. A trigger plate 304 is fixedly connected to one end of the temperature sensing contact 303 near the starter button 305. The icing detection intelligent control system also includes an analysis detection module. The weathering support cylinder 301 is made of heat-conducting material. The temperature sensing contact 303 is made of a shape memory alloy material with a two-way memory effect. The temperature sensing contact 303 is in a high-temperature phase state, and the length of the low-temperature phase state of the temperature sensing contact 303 is greater than the length of its high-temperature phase state. The phase transition temperature of the temperature sensing contact 303 is preferably 0℃ (the phase transition temperature of the temperature sensing contact 303 can be appropriately adjusted according to the actual situation, for example, the phase transition temperature of the temperature sensing contact 303 can be adjusted to be slightly higher than 0℃). The start button 305 and the ice detection analysis module are both connected to the analysis start detection module. The analysis start detection module is also connected to the humidity sensor 302 and the ice detection control module.

[0042] Generally, ice formation on cable surfaces is only possible when the temperature is below zero and the humidity reaches a certain level. By setting a humidity threshold using the ice detection analysis module, the temperature-sensing extension element 303 monitors the temperature. When the ambient temperature is low, causing the temperature-sensing extension element 303 to drop below zero, it will elongate due to its transition to a low-temperature phase, causing the trigger plate 304 to press the trigger start button 305. At this time, the analysis and detection module will activate the humidity sensor 302 to monitor the ambient humidity. The humidity data monitored by the temperature-sensing extension element 303 will be transmitted to the analysis and detection module in real time. When the humidity exceeds the humidity threshold, it indicates that the climatic conditions meet the requirements for ice formation. At this point, the analysis and detection module will send a start monitoring signal to the ice detection control module, which will then periodically perform the operation of detecting the thickness of the ice layer on the surface of the low-temperature cable 001 (in this embodiment, the analysis...). Before the start-up monitoring module sends a start-up signal to the icing detection control module, the icing detection control module will not periodically perform detection operations. Additionally, when the ambient humidity is below the humidity threshold, or when the ambient temperature rises causing the temperature sensing contact 303 to revert to its high-temperature phase shape, causing the starter button 305 to de-trigger (the starter button 305 is a self-resetting button), the analysis start-up module will send a stop-monitoring signal to the icing detection control module, causing the icing detection control module to stop periodically performing detection operations. Therefore, through the combined setup of the weather-sensing start-up component and the analysis start-up module, the icing detection alarm mechanism will only monitor the ice thickness on the cable surface periodically when the climatic conditions meet the requirements for icing. This improves the effectiveness of monitoring, avoids ineffective and unnecessary monitoring, reduces the energy consumption of the icing detection alarm mechanism, increases its endurance, and greatly enhances its practicality.

[0043] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A low-temperature resistant cable suitable for cold regions, comprising a low-temperature resistant cable body (001), characterized in that, An icing detection mechanism is provided on the low-temperature resistant cable body (001). The icing detection mechanism includes a cable support cylinder (201). The low-temperature resistant cable body (001) passes through the cable support cylinder (201) and is sealed and fixedly connected to it. A sliding sealing partition (202) is provided inside the cable support cylinder (201) and is slidably and sealed to it. The low-temperature resistant cable body (001) passes through the sliding sealing partition (202) and is slidably and sealed to it. An ice detection plate (203) is fixedly connected to the top of the sliding sealing partition (202). The ice detection plate (203) is set in an arc shape that matches the low-temperature resistant cable body (001), and the inner diameter of the ice detection plate (203) is larger than the diameter of the low-temperature resistant cable body (001). The ice detection plate (203) passes through the cable support cylinder (201). The top outer wall is slidably sealed to it. Below the sliding seal partition (202) are a heater (204) and a lower air pressure sensor (205) fixedly installed on the inner wall of the cable support cylinder (201). Above the sliding seal partition (202) are an upper air pressure sensor (206) and a distance sensor (208) fixedly installed on the inner wall of the cable support cylinder (201). The distance sensor (208) is located directly above the sliding seal partition (202). An elastic pull rope (207) is fixedly connected between the sliding seal partition (202) and the bottom inner wall of the cable support cylinder (201). The icing detection alarm mechanism also includes an icing detection intelligent control system. The icing detection intelligent control system includes an icing detection setting module, an icing detection control module, an icing detection analysis module, and a remote early warning module. The ice detection setting module is signal-connected to the ice detection control module and the ice detection analysis module. The ice detection control module is signal-connected to the heater (204), the lower air pressure sensor (205), the upper air pressure sensor (206), the distance sensor (208), and the ice detection analysis module. The distance sensor (208) is signal-connected to the ice detection analysis module. The ice detection analysis module is signal-connected to the remote early warning module. The ice detection alarm mechanism is used to detect the thickness of the ice layer on the cable surface and to issue an alarm when the detected ice layer reaches the alarm threshold.

2. The low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, Below the sliding seal partition (202), a temperature sensor (209) is also provided, which is fixedly installed on the inner wall of the cable support cylinder (201). The ice detection control module is connected to the temperature sensor (209) via signal.

3. The low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, Both sides of the ice detection plate (203) are provided with matching hot plate strips (210). The hot plate strip (210) consists of a fast conducting section (101) and a slow conducting section (102) that matches the fast conducting section (101). The slow conducting section (102) is fixedly installed at the bottom end of the fast conducting section (101). The slow conducting section (102) passes through the sliding sealing partition (202) and is slidably and sealingly connected to it. The top end of the fast conducting section (101) is fixedly connected to the inner wall of the top end of the cable support cylinder (201).

4. A low-temperature resistant cable suitable for cold regions according to claim 3, characterized in that, Both the fast conduction section (101) and the slow conduction section (102) are made of thermally conductive materials, and the thermal conductivity of the slow conduction section (102) is better than that of the fast conduction section (101).

5. A low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, The top of the ice detection plate (203) is flush with the top of the cable support cylinder (201), and both the cable support cylinder (201) and the sliding seal partition (202) are made of heat insulation material.

6. A low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, The icing detection mechanism also includes a straightening ring (211) fixedly sleeved on the low-temperature resistant cable body (001). A straightening rod (212) is fixedly connected between the straightening ring (211) and the cable support cylinder (201). The straightening ring (211) is located above the cable support cylinder (201), and the portion of the low-temperature resistant cable body (001) between the straightening ring (211) and the cable support cylinder (201) is straight.

7. A low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, The side wall of the cable support cylinder (201) is connected to a pressure relief pipe (213), and the end of the pressure relief pipe (213) away from the cable support cylinder (201) is connected to a pressure relief cylinder (214). An elastic pressure relief membrane (215) is embedded through the outer wall of the end of the pressure relief cylinder (214) away from the pressure relief pipe (213). The pressure relief pipe (213) is located above the sliding seal partition (202).

8. A low-temperature resistant cable suitable for cold regions according to claim 1, characterized in that, The icing detection and alarm mechanism also includes a weather detection and alarm component, which includes a weather support cylinder (301) and a cable support cylinder (201) fixedly connected. A humidity sensor (302) is fixedly installed on the outer wall of the weather support cylinder (301). A temperature measuring contact (303) and an alarm button (305) are fixedly installed inside the humidity sensor (302). A trigger plate (304) is fixedly connected to one end of the temperature measuring contact (303) near the alarm button (305). The icing detection intelligent control system also includes an analysis and alarm module.

9. A low-temperature resistant cable suitable for cold regions according to claim 8, characterized in that, The weathering support cylinder (301) is made of thermally conductive material, and the temperature measuring extension (303) is made of shape memory alloy material with two-way memory effect. The temperature measuring extension (303) is in a high-temperature phase state. The length of the low-temperature phase state of the temperature measuring extension (303) is greater than the length of its high-temperature phase state. The phase transition temperature of the temperature measuring extension (303) is 0°C. The start button (305) and the ice detection analysis module are both signal connected to the analysis start module. The analysis start module is also signal connected to the humidity sensor (302) and the ice detection control module.

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