Heat dissipation temperature control system and temperature control method for densely laid cable trough

Abstract

The invention belongs to the technical field of cable heat dissipation, and relates to a heat dissipation temperature control system and temperature control method for a densely laid cable trough. The system comprises an earth surface water collecting tank, a buffer well and a gutter which are sequentially connected, the water collecting well and the gutter are arranged beside a cable trough and are separated by a partition plate, and a plurality of heat pipes penetrate through the partition plate; one end of the heat pipe is a hot end evaporation section, and the other end is a condensation section; the heat pipe comprises a pipe shell with a hollow cavity, and a liquid absorbing core is distributed in the pipe shell; the hollow cavity is used as an air chamber; the area controlled by each heat pipe is a heat dissipation unit, the heat dissipation unit located at the tail end of the gutter collects temperature information, water level information and water temperature information of the cable trough, and the other heat dissipation units are used for collecting the temperature information of the cable trough and transmitting the temperature information to a master control center; the master control center is used for collecting and processing data and then feeding the data back to the buffer well and the water collecting well, and temperature regulation and control and accurate fault positioning are achieved. The problems of low heat dissipation efficiency, poor adaptability and lack of intelligent regulation and control in the prior art are solved.

Description

Technical Field

[0001] This invention belongs to the field of cable heat dissipation technology, specifically relating to a heat dissipation and temperature control system and method for densely laid cable troughs. Background Technology

[0002] In the field of power transmission, cables are often densely laid in enclosed / semi-enclosed spaces such as underground cable trays and dedicated cable trays in industrial plants. The densely running cables generate a large amount of Joule heat, and the enclosed structure of the cable trays severely restricts the natural dissipation of heat, leading to rapid heat accumulation. This not only accelerates the aging of the cable insulation and shortens its service life but also easily causes overheating faults, threatening the safe and stable operation of the system. Therefore, efficient heat dissipation and temperature control in densely laid cable trays has become a critical issue that the industry urgently needs to address.

[0003] Existing cable cooling technologies have many shortcomings and are difficult to adapt to the needs of densely laid cable troughs: natural cooling technologies rely on air convection or soil heat conduction, but due to the extremely small gaps between cables in dense cable troughs, poor air circulation, and the tendency for "heat accumulation zones" to form in the soil, the heat exchange efficiency is extremely low, and it cannot effectively remove a large amount of heat; forced air cooling technologies enhance heat dissipation by blowing air through fans, but this further reduces the available space in dense cable troughs, and the blowing air can easily introduce impurities that affect insulation. In addition, air has a low specific heat capacity and limited heat carrying capacity, so it does not significantly improve heat dissipation for high-load, densely laid cables, and also suffers from high energy consumption and high noise; ordinary heat dissipation... While pipe-based heat dissipation technology utilizes the phase change of the working fluid for heat transfer, it suffers from poor thermal coupling with multiple densely packed cables, low heat collection efficiency, and a lack of continuous and efficient cold source replenishment at the cold end. When the cables generate a large amount of heat, the temperature at the cold end tends to rise rapidly, the heat transfer temperature difference narrows, and the heat dissipation capacity decreases quickly. Conventional water circulation heat dissipation technology relies on the high specific heat capacity of water, but it lacks an efficient heat transfer medium between the cable and the densely packed cables, resulting in low efficiency of heat transfer from the cable to the circulating water. Furthermore, because water circulation is mostly controlled in a coarse manner, it cannot be intelligently adjusted according to the real-time heating of the cables, which can easily lead to "excessive" or "insufficient" heat dissipation, wasting energy and making it difficult to guarantee temperature control.

[0004] In summary, existing technologies suffer from low heat dissipation efficiency, poor spatial adaptability, or lack of intelligent control in scenarios with densely laid cable troughs, making it impossible to achieve efficient and stable temperature control. Summary of the Invention

[0005] The purpose of this invention is to provide a heat dissipation and temperature control system and method for densely laid cable troughs, which solves the problems of low heat dissipation efficiency, poor spatial adaptability, and lack of intelligent control in existing densely laid cable trough scenarios, all of which cannot achieve efficient and stable temperature control.

[0006] This invention is achieved through the following technical solution: This invention discloses a heat dissipation and temperature control system for densely laid cable troughs, including a surface water collection tank, a buffer well, a water diversion trough, a water collection well, and a central control center; The surface water collection tank is connected to the buffer well via a pipe. The buffer well is connected to the water intake channel via a water pump and a pipe. The water intake channel is located next to the cable trench laying area. The water collection well is located at the end of the water intake channel. The water collection well collects the water after heat dissipation and transports it back to the surface water collection tank via a power pump and a pipe. The water inlet trough and the cable trough are separated by a partition. Multiple heat pipes for heat dissipation are installed through the partition. One end of the heat pipe is located in the cable trough and the other end is located in the water inlet trough. The end of the heat pipe that extends into the cable trough is the hot end evaporation section, and the end that extends into the water inlet is the condensation section; the heat pipe includes a hollow tube shell, inside which are arranged liquid wicks for the transfer of liquid working fluid; the hollow cavity serves as a gas chamber. Each heat pipe controls an area that constitutes a heat dissipation unit. The heat dissipation unit located at the end of the water inlet channel is used to collect temperature information, water level information, and water temperature information of the cable channel and transmit them to the central control center. The remaining heat dissipation units are used to collect temperature information of the cable channel and transmit it to the central control center. The central control center collects and processes the data and then feeds it back to the buffer well and the water collection well to achieve temperature regulation and precise fault location.

[0007] Furthermore, fins are provided at both ends of the heat pipe.

[0008] Furthermore, a cross-fixed metal support structure is provided in the water intake channel. The metal support structure has an openable hoop, and a movable plate is hinged at the opening of the hoop. The heat pipe is clamped into the clamp ring.

[0009] Furthermore, a support frame is provided at the bottom of the heat pipe, and the metal support structure is located above the support frame and above the maximum water level of the water inlet tank; The support frame is fixed to the bottom of the water inlet channel.

[0010] Furthermore, a protective sleeve is fitted at the bottom of the heat pipe, and a cushioning component is provided in the protective sleeve.

[0011] Furthermore, a support rod perpendicular to the cable trough is installed in the cable trough, and the top of the support rod has a pre-made flared groove for clamping the heat pipe.

[0012] Furthermore, a temperature sensor is installed in the cable trough, and the probe of the temperature sensor is tied next to the heat pipe.

[0013] Furthermore, a thermoelectric power generation module for powering the temperature sensor is installed on the surface of the heat pipe on one side of the water inlet tank. The hot end of the thermoelectric power generation module is the surface of the heat pipe, and the cold end is the air inside the water inlet tank.

[0014] Furthermore, the temperature sensor is connected to a wireless data transmission module, which is connected to the central control center.

[0015] The present invention also discloses a temperature control method for the aforementioned heat dissipation and temperature control system, comprising the following steps: The surface water collection pool collects natural rainwater or is artificially replenished. The surface water collection pool delivers water to the buffer well through pipelines. The water in the buffer well is then pumped and piped to the water diversion channel in the downstream cable area. The water in the water diversion channel flows from upstream to downstream. During the flow, it passes through multiple heat dissipation units, which transfer heat from the cable trough to the water diversion channel for heat dissipation. The water temperature of the flowing water rises, and it flows into the collection well at the end of the water diversion channel. The collection well collects the water after absorbing heat and pumps it back to the surface water collection pool through an internal power pump and pipeline. This cycle repeats continuously. The heat dissipation unit transfers heat from the cable tray to the water inlet for cooling, specifically as follows: The liquid working fluid in the hot-end evaporation section evaporates into a gaseous state upon heating, absorbing a large amount of heat in the process. The gaseous working fluid enters the gas chamber and transfers the heat to the condensation section. In the condensation section, the gaseous working fluid condenses upon cooling, releasing a large amount of heat in the process. The gaseous working fluid returns to a liquid state, and the liquid working fluid is absorbed by the wick and diffuses under the drive of capillary force to the hot-end evaporation section. The entire process is repeated, realizing the transfer of heat from the cable trough to the water inlet tank. During the heat dissipation process, the heat dissipation unit located at the end of the water inlet channel collects the temperature information, water level information, and water temperature information of the cable trough and transmits them to the central control center; the remaining heat dissipation units collect the temperature information of the cable trough and transmit it to the central control center. After collecting and processing the data, the central control center feeds it back to the buffer well and the collection well to achieve temperature regulation. When a cable tray malfunctions or overheats, the faulty sub-area can be located promptly based on the transmitted abnormal data.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: This invention provides a heat dissipation and temperature control system for densely laid cable troughs. Heat pipes with absorbent cores are directly connected to the cable troughs and water inlets. The heat pipes achieve highly efficient heat transfer through the phase change of the working fluid (the heat transfer efficiency is far higher than ordinary heat conduction). Simultaneously, the water in the water inlets comes from a surface rainwater collection tank, which collects rainwater and utilizes the open water surface for heat dissipation during circulation, providing a continuous low-temperature cold source. The surface rainwater collection tank can also be designed as a fountain-like landscape, without affecting the aesthetics of the ground facilities. Compared to the problems of insufficient cold source and easy heat dissipation attenuation in existing ordinary heat pipes, this system, through the combination of enhanced heat transfer via heat pipes and a continuous cold source from the water, can quickly conduct and remove the heat from the densely packed cables, ensuring that the temperature inside the cable trough is stably controlled within a safe range, preventing heat accumulation even when the cables are operating under high load.

[0017] The technology of this invention has strong spatial adaptability and can be well compatible with scenarios with dense underground cable laying. The water diversion channel and cable channel adopt a parallel excavation design, and the two are arranged compactly without occupying a large area of ​​additional space. It also avoids the problem of "spatial conflict" between conventional large heat dissipation equipment and dense cables. It is especially suitable for scenarios with limited space, such as underground pipe corridors and industrial plants. It can complete the construction of heat dissipation system without changing the original cable laying density, making it highly practical.

[0018] Furthermore, in order to secure the heat pipe, it is firmly fixed on the side of the water inlet channel. A cross-fixed metal support structure is installed on one side of the water inlet channel. The metal support structure is equipped with a hoop. The heat pipe is snapped into the hoop, and then the movable plate is closed to restrict and fix the lateral displacement of the heat pipe.

[0019] Furthermore, to prevent the metal support structure from rusting due to prolonged immersion in water, it is fixed above the maximum water level of the water inlet trough.

[0020] Furthermore, a thermoelectric power generation module is installed on the surface of the heat pipe on one side of the water intake channel. Using thermoelectric power generation technology, it is possible to achieve wireless transmission and collection of decentralized fixed-point information, and to accurately locate the fault area based on the information, so as to facilitate timely emergency rescue and treatment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the heat dissipation and temperature control system for densely laid cable troughs according to the present invention; Figure 2 This is a schematic diagram of the installation of the cable trough and water diversion trough of the present invention, wherein Figure a is a top view and Figure b is a side view; Figure 3a This is a schematic diagram of the external structure of a heat pipe with a wick. Figure 3b A schematic diagram of the internal structure of a heat pipe with a wick. Figure 4a Top view showing details of heat pipe installation in the water inlet tank; Figure 4b Side view showing details of heat pipe installation in the water inlet tank; Figure 5 The installation sequence of the heat pipes in the water inlet tank is shown in Figure a. Figure a shows a detailed view of the installation positions of the thermoelectric generator module and sensor. Figure b shows the effect of the thermoelectric generator module installed on the side of the water inlet tank. Figure 6 This is a schematic diagram showing the installation location of the thermoelectric power generation module in this invention; Figure 7 This is a schematic diagram showing the support of the heat pipe inside the cable trough of the present invention; Figure 8 This is a schematic diagram illustrating the principle of wireless sensing information transmission and collection in this invention.

[0022] The components include: 1. Surface water collection tank; 2. Buffer well; 3. Cable; 4. Water diversion channel; 5. Water collection well; 6. Central control center; 7. Cable trough; 8. Support frame; 9. Fins; 10. Heat pipe; 11. Partition plate; 12. Soil; 13. Cover plate; 14. Thermoelectric power generation module; 15. Temperature sensor; 16. Wireless data transmission module. 101. Hot end evaporation section; 102. Condensation section; 103. Liquid suction core; 104. Tube shell; 105. Gas chamber; 41. Metal support structure; 42. Hoop; 43. Movable plate; 44. Support frame; 45. Protective sleeve; 46. Buffer component; 71. Support rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0024] The components described and illustrated in the accompanying drawings and embodiments of this invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely to illustrate one selected embodiment of the invention. All other embodiments obtained by those skilled in the art based on the accompanying drawings and embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0025] To achieve temperature control of the cable trough 7 by cooling with cold water, this invention designs as follows: Figure 1 The heat dissipation and temperature control system for densely laid cable troughs shown includes a surface water collection tank 1, a buffer well 2, a water diversion channel 4, a water collection well 5, and also includes a water pump providing power within the well, a central control center 6, etc. The water diversion channel 4 is located in the laying area of ​​the cable trough 7.

[0026] Specifically, the surface water collection tank 1 is used to collect natural rainwater or for artificial water replenishment. The surface water collection tank 1 is naturally connected to the buffer well 2 via pipes, and relying on the principle of communicating vessels, the surface water collection tank and the buffer well 2 achieve natural water level balance. A water pump is installed in the buffer well 2, and the water in the buffer well 2 is transported to the downstream cable area's water intake channel 4 through the pump and pipes. Water in the water intake channel 4 generally flows naturally from upstream to downstream. A collection well 5 is installed at the end of the water intake channel 4. The collection well 5 collects the water after heat dissipation and transports it back to the surface water collection tank 1 through an internal power pump and externally connected pipes. The cooling water system circulates in this way. In the surface water collection tank 1, its open water surface allows for natural cooling of the returned water after heat dissipation, ensuring that the water temperature remains at a low level during circulation.

[0027] To facilitate construction and ensure the effective implementation of the heat dissipation system, this invention adopts the following... Figure 2 The water inlet trough 4 and cable trough 7 are arranged in parallel as shown. Specifically, as... Figure 2 As shown in Figure a, a water diversion channel 4 and a cable trench 7 are excavated in parallel within the soil mass 12. The water diversion channel 4 and the cable trench 7 are independently separated by a partition 11 or other waterproofing measures to ensure that the cable trench 7 remains dry. The cable trench 7 has a support 8 for placing cables, on which several cables 3 are placed and fixed according to the cable laying specifications.

[0028] To transfer heat from the cable trough 7 to the water inlet trough 4 and dissipate the heat using flowing water, a heat pipe 10 with fins 9 is connected between the water inlet trough 4 and the cable trough 7. Specifically, multiple heat pipes 10 are installed through the partition 11, with one end of each heat pipe 10 located inside the cable trough 7 and the other end located inside the water inlet trough 4.

[0029] like Figure 2 As shown in Figure b, fins 9 are provided at both ends of the heat pipe 10.

[0030] Under normal circumstances, such as Figure 2 As shown in Figure b, a cover plate 13 also needs to be installed on the upper part of the water inlet trough 4 and the cable trough 7 to isolate the cable trough 7 from the external environment and ensure the safe operation of the cable 3.

[0031] In addition, it should be noted that each heat pipe 10 controls an area that constitutes a heat dissipation unit. Each heat dissipation unit transmits temperature data to the central control center 6 via wireless feedback. The central control center 6 collects and processes this signal data and feeds it back to the water pumps in the buffer well 2 and the collection well 5 for precise control. That is, based on the temperature information, it judges the current heat generation level in the cable trough and precisely controls the water pumps to achieve flow matching and heat dissipation balance. It should also be noted that the water in the water inlet trough 4 is in a natural flow state. Therefore, the downstream end heat dissipation unit should also transmit back information such as the current water level and water temperature in the water inlet trough 4.

[0032] More preferably, in order to achieve heat transfer that overcomes the influence of gravity, a heat pipe 10 with a wick 103 is used. This heat pipe 10 with a wick 103 can overcome gravity to transfer heat. Its external structure is as follows: Figure 3a As shown, the internal structure is as follows Figure 3b As shown.

[0033] Specifically, such as Figure 3b As shown, the heat pipe 10 includes a hollow tube shell 104, inside which is a wick 103 for transporting liquid working fluid; the hollow cavity serves as a gas chamber 105 for transporting gaseous working fluid; one end of the heat pipe 10 extending into the cable trough 7 is the hot-end evaporation section 101, and the other end extending into the water inlet trough 4 is the condensation section 102. The liquid working fluid in the hot-end evaporation section 101 evaporates into a gaseous state upon heating, absorbing a large amount of heat in the process. The gaseous working fluid enters the gas chamber 105 and transfers heat to the condensation section 102. In the condensation section 102, the gaseous working fluid condenses upon cooling, releasing a large amount of heat in the process. The gaseous working fluid returns to a liquid state, is absorbed by the wick 103, and diffuses back to the hot-end evaporation section 101 under capillary action. The entire process repeats continuously, realizing the migration and removal of heat in the cable trough 7.

[0034] To secure the heat pipe 10 and ensure the stability of the device, the heat pipe 10 is firmly fixed to the side of the water inlet tank 4. Generally, a large number of cables need to be installed in the cable trough 7, so it is inconvenient to install too many heat dissipation auxiliary components in the cable trough 7. Therefore, the heat pipe 10 is firmly fixed to the water inlet tank 4.

[0035] Specifically, such as Figure 4a As shown, the water inlet trough 4 has a cross-fixed metal support structure 41 with an openable clamping ring 42. The opening / closing of the clamping ring 42 is achieved by a movable plate 43. Generally, the heat pipe 10 is a custom-made component. Therefore, during installation, the movable plate 43 is opened, the heat pipe 10 is inserted into the clamping ring 42, and then the movable plate 43 is closed, thereby restricting and fixing the lateral displacement of the heat pipe 10. The metal support structure 41 is fixed to the two side walls of the water inlet trough 4 by bolts or screws.

[0036] Furthermore, such as Figure 4b As shown, to prevent the metal support structure 41 from rusting due to long-term immersion in water, it is generally fixed above the maximum water level of the water inlet tank 4. In addition, a support frame 44 should be provided at the bottom of the heat pipe 10, and the support frame 44 is still fixed by bolts or screws, such as self-tapping screws.

[0037] Considering that the end of the heat pipe 10 is generally a vulnerable part, a protective sleeve 45 is fitted over the end of the heat pipe 10. A buffer component 46 may be provided in the protective sleeve 45 as needed. The buffer component 46 may be made of sponge or spring.

[0038] Construction sequence and details of the fixed structure in water intake channel 4 Figure 5 Specifically, such as Figure 5 As shown in Figure a, the installation position of the cross-fixed metal support structure 41 should be determined first to prevent it from being submerged in water and corroding. After determining a suitable installation position, it should be fixed with bolts or screws. To facilitate the installation of the heat pipe 10, a groove needs to be left in the water inlet trough 4 structure to hold the heat pipe 10 in place; after the metal support structure 41 is installed, the movable plate 43 is opened, the heat pipe 10 is inserted, and then the movable plate 43 is closed. After completing the above steps, as shown in Figure a, the installation position of the cross-fixed metal support structure 41 should be determined first to prevent it from being submerged in water and corroding. Figure 5 As shown in Figure b, the protective sleeve 45 is finally firmly fixed to the bottom of the water inlet trough 4 by the support frame 44.

[0039] To effectively secure the heat pipe 10, a similar design was also incorporated on one side of the cable tray 7. Figure 7 The support structure shown is designed to ensure the safety and stability of the heat pipe 10 structure. Specifically, a support rod 71 perpendicular to the cable trough 7 is installed in the cable trough 7. The top of the support rod 71 has a flared groove structure that can hold the heat pipe 10 in place and maintain its stability.

[0040] A temperature sensor 15 is installed in the cable trough 7. The probe of the temperature sensor 15 can be tied next to the heat pipe 10. Considering the characteristic that hot air rises when heated, the probe is generally located in the upper space of the cable trough 7.

[0041] After the heat pipe 10 is fixedly installed, in order to power the temperature sensor 15, a thermoelectric generator module 14 needs to be installed on the surface of the heat pipe 10 on one side of the water inlet tank 4, such as... Figure 6As shown. In addition, the cable of the temperature sensor 15 needs to be passed through the groove. After completing the above steps, the gaps in the groove should generally be filled with a waterproof material to ensure that the water inlet trough 4 and the cable trough 7 are completely isolated at the physical level. Specifically, the hot end of the thermoelectric power generation module 14 is the surface of the heat pipe 10, and the cold end is the air inside the water inlet trough 4; due to the high thermal conductivity of the heat pipe 10, the temperature of the surface of the heat pipe 10 can be kept approximately the same as the temperature of the air in the cable trough 7, so it can be used as the hot end of the thermoelectric power generation module 14. The air temperature inside the water inlet trough 4 is often lower than the surface temperature of the heat pipe 10, so it serves as the cold end of the thermoelectric power generation module 14. The temperature difference between the hot and cold ends will generate electrical energy to power the output of the sensor module, such as... Figure 6 As shown, when a fault occurs in a certain part of the cable trough 7, the temperature rises sharply. At this time, the temperature of the hot end of the thermoelectric generator module 14 also rises sharply, the output power of the module increases accordingly, the available power also increases, and the signal transmission capability is also enhanced, thereby enabling precise fault location.

[0042] To achieve wireless transmission of information data, the electrical energy generated by the thermoelectric generator module 14 must be supplied to the wireless data transmission module 16. The implementation method is as follows: Figure 6 As shown. Specifically, the positive and negative terminals of the thermoelectric generator module 14 are connected to the positive and negative input terminals of the wireless data transmission module 16; in order to collect temperature and water level information, the temperature sensor 15 should also be connected to the wireless data transmission module 16, as detailed in [link to documentation]. Figure 6 As shown. After installation, a cover plate 13 must be applied on top to isolate the external environment from the underground trench. Finally, to facilitate fault location and repair, a nameplate with location information is installed on the surface of the cover plate 13; when a fault occurs, the corresponding cover plate can be quickly located and opened for emergency repairs.

[0043] This invention primarily aims to solve the heat dissipation and temperature control problem of cable troughs 7, and is particularly suitable for densely laid cable troughs 7. The principles of information transmission and collection technology throughout the system are as follows: Figure 8 As shown. Specifically, it includes thermoelectric power generation technology, wireless sensing technology, fault monitoring and location technology. By dividing the heat dissipation unit corresponding to each heat pipe 10 into a sub-region, thermoelectric power generation technology powers the wireless transmission module of each sub-region; the heat dissipation unit located at the end of the water inlet trough 4 needs to collect not only the temperature information of the cable trough 7, but also the water level information and water temperature information; this information is transmitted back to the central control center 6, which monitors the operation of the cable trough 7 in real time and automatically based on this information; and formulates a suitable water inlet strategy for the water inlet trough 4 (mainly water flow control) according to the actual situation; when the cable trough 7 malfunctions and heats up abnormally, the faulty sub-region is located in time according to the transmitted abnormal data, and a rapid emergency rescue response is achieved based on the location information nameplate on the surface of the cover plate 13.

[0044] This invention enables intelligent energy saving and precise, controllable regulation. The central control center 6 can receive real-time temperature information from each temperature control unit node of the cable trough 7, as well as monitoring data such as water level and temperature in the water inlet trough 4, and automatically adjust the start / stop of the water pump and the water flow rate according to a preset strategy. Compared with the shortcomings of existing water circulation systems, which suffer from "extensive control and energy waste" and natural heat dissipation, which suffers from "lack of regulation and excessive or insufficient heat dissipation," this system can achieve "on-demand heat dissipation": when the cable heat generation is low, the water flow rate is reduced to lower energy consumption; when the heat generation is high, the circulation efficiency is increased in a timely manner, ensuring heat dissipation while avoiding energy waste, thus balancing practicality and economy.

[0045] Meanwhile, the system boasts high stability and reliability. On one hand, the heat pipe 10 with the liquid-absorbing core 103 has strong resistance to external interference; on the other hand, the buffer well 2 can balance the water level in the water inlet tank 4, avoiding unstable heat dissipation caused by water fluctuations. Moreover, the water itself has a large specific heat capacity and a gradual temperature change, which can reduce the impact of cold source fluctuations on the heat dissipation effect. This solves the problems of "easy dust accumulation" in existing forced air cooling and "poor heat dissipation stability" in ordinary heat pipes, and can adapt to the continuous operation requirements of dense cables for a long time.

[0046] This invention also boasts advantages such as convenient construction and wide adaptability to various scenarios. From a construction logic perspective, the water diversion channel 4 and cable channel 7 are excavated in parallel, and the heat pipe 10, pipelines, and monitoring elements can be modularly installed without requiring extensive modifications to the existing cable laying structure. Combined with the water circulation path of "surface water collection pool 1—buffer well 2—water collection well 5," it can well adapt to underground enclosed environments. This system can flexibly match different dense cable laying scenarios, reducing construction difficulty and modification costs.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A heat dissipation and temperature control system for densely laid cable troughs, characterized in that, Includes surface water collection pool (1), buffer well (2), water diversion channel (4), water collection well (5), and central control center (6); The surface water collection tank (1) is connected to the buffer well (2) through a pipe. The buffer well (2) is connected to the water inlet channel (4) through a water pump and a pipe. The water inlet channel (4) is located on the side of the cable trough (7) laying area. The water collection well (5) is located at the end of the water inlet channel (4). The water collection well (5) collects the water after heat dissipation and transports it back to the surface water collection tank (1) through a power pump and a pipe. The water inlet trough (4) and the cable trough (7) are separated by a partition (11). Multiple heat pipes (10) for heat dissipation are installed through the partition (11). One end of the heat pipe (10) is located in the cable trough (7) and the other end is located in the water inlet trough (4). The heat pipe (10) extends into the cable trough (7) at one end, which is the hot end evaporation section (101), and into the water inlet trough (4), which is the condensation section (102). The heat pipe (10) includes a hollow tube shell (104), and the tube shell (104) is equipped with a liquid wick (103) for the transfer of liquid working fluid. The hollow cavity serves as a gas chamber (105). Each heat pipe (10) controls an area that is a heat dissipation unit. The heat dissipation unit located at the end of the water inlet trough (4) is used to collect temperature information, water level information and water temperature information of the cable trough (7) and transmit them to the central control center (6); the remaining heat dissipation units are used to collect temperature information of the cable trough (7) and transmit it to the central control center (6); the central control center (6) is used to collect and process the data and then feed it back to the buffer well (2) and the water collection well (5) to achieve temperature regulation and accurate fault location.

2. The heat dissipation and temperature control system for densely laid cable troughs according to claim 1, characterized in that, Fins (9) are provided at both ends of the heat pipe (10).

3. The heat dissipation and temperature control system for densely laid cable troughs according to claim 1, characterized in that, A cross-fixed metal support structure (41) is provided in the water inlet channel (4). The metal support structure (41) has an openable hoop (42), and a movable plate (43) is hinged at the opening of the hoop (42). The heat pipe (10) is clamped in the clamp ring (42).

4. The heat dissipation and temperature control system for densely laid cable troughs according to claim 3, characterized in that, A support frame (44) is provided at the bottom of the heat pipe (10), and a metal support structure (41) is located above the support frame (44) and above the maximum water level of the water inlet tank (4); The support frame (44) is fixed to the bottom of the water inlet trough (4).

5. The heat dissipation and temperature control system for densely laid cable troughs according to claim 1, characterized in that, A protective sleeve (45) is fitted at the bottom of the heat pipe (10), and a buffer component (46) is provided in the protective sleeve (45).

6. The heat dissipation and temperature control system for densely laid cable troughs according to claim 3, characterized in that, A support rod (71) perpendicular to the cable trough (7) is installed in the cable trough (7), and the top of the support rod (71) has a flared groove for snapping the heat pipe (10).

7. The heat dissipation and temperature control system for densely laid cable troughs according to claim 1, characterized in that, A temperature sensor (15) is installed in the cable trough (7), and the probe of the temperature sensor (15) is tied next to the heat pipe (10).

8. The heat dissipation and temperature control system for densely laid cable troughs according to claim 7, characterized in that, A thermoelectric power generation module (14) for powering a temperature sensor (15) is installed on the surface of a heat pipe (10) on one side of the water inlet tank (4). The hot end of the thermoelectric power generation module (14) is the surface of the heat pipe (10), and the cold end is the air inside the water inlet tank (4).

9. A heat dissipation and temperature control system for densely laid cable troughs according to claim 7, characterized in that, The temperature sensor (15) is connected to a wireless data transmission module (16), which is connected to the central control center (6).

10. The temperature control method of the heat dissipation and temperature control system according to any one of claims 1-9, characterized in that, Includes the following processes: The surface water collection pool (1) collects natural rainwater or provides artificial water replenishment. The surface water collection pool (1) delivers water to the buffer well (2) through a pipeline. The water in the buffer well (2) is delivered to the water diversion channel (4) in the downstream cable area through a water pump and pipeline. The water in the water diversion channel (4) flows from upstream to downstream. During the flow, it passes through multiple heat dissipation units to transfer the heat in the cable trough (7) to the water diversion channel (4) for heat dissipation. The water temperature of the flowing water rises and flows into the water collection well (5) at the end of the water diversion channel (4). The water collection well (5) collects the water after absorbing heat and delivers it back to the surface water collection pool (1) through an internal power pump and pipeline. This cycle repeats continuously. The heat dissipation unit transfers heat from the cable tray (7) to the water inlet tray (4) for heat dissipation, specifically as follows: The liquid working fluid in the hot-end evaporation section (101) evaporates into a gaseous state when heated, absorbing a large amount of heat in the process. The gaseous working fluid enters the gas chamber (105) and transfers the heat to the condensation section (102). In the condensation section (102), the gaseous working fluid condenses when cooled, releasing a large amount of heat in the process. The gaseous working fluid turns back into a liquid state, and the liquid working fluid is absorbed by the liquid-absorbing core (103) and diffuses under the drive of capillary force to the hot-end evaporation section (101). The whole process is repeated, realizing the transfer of heat from the cable trough (7) to the water inlet tank (4). During the heat dissipation process, the heat dissipation unit located at the end of the water inlet tank (4) collects the temperature information, water level information and water temperature information of the cable trough (7) and transmits them to the central control center (6); the other heat dissipation units collect the temperature information of the cable trough (7) and transmit it to the central control center (6). The central control center (6) collects and processes the data and then feeds it back to the buffer well (2) and the water collection well (5) to achieve temperature control. When a cable trough (7) malfunctions or overheats, the faulty sub-area is located in a timely manner based on the abnormal data transmitted back.

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