Cable heat dissipation system and control method thereof

Abstract

The application relates to a cable heat dissipation system and a control method thereof. The system comprises a preparation mechanism for preparing cooling water, a control mechanism comprising a driving assembly and a flow control assembly, a first end of the driving assembly being connected with a first end of the preparation mechanism, a second end of the driving assembly being connected with a first end of the flow control assembly, a first end of a heat absorption mechanism being connected with a second end of the flow control assembly, and a second end of the heat absorption mechanism being connected with a second end of the preparation mechanism, wherein the preparation mechanism, the driving assembly, the flow control assembly and the heat absorption mechanism constitute a heat dissipation loop, and the driving assembly is used for driving the cooling water to flow in the heat dissipation loop in a preset direction. The system can improve the cable heat dissipation efficiency.

Description

Technical Field

[0001] This application relates to the field of cable heat dissipation enhancement technology, and in particular to a cable heat dissipation system and its control method. Background Technology

[0002] With the continuous growth in electricity demand, the requirements for power transmission reliability and cable transmission capacity are constantly increasing, making cable laying methods crucial. Among various laying methods, cable tunnels are gradually becoming the mainstream choice due to their ability to effectively protect cables, accommodate a large number of circuits, provide large transmission capacity, and facilitate operation and maintenance. Therefore, their technological optimization has become a focus of industry attention.

[0003] To address the heat dissipation problem of multi-circuit cables in cable tunnels, the existing solution is to use fans for ventilation and heat dissipation. This method utilizes airflow to remove heat, ensuring stable cable cooling and current carrying capacity. However, the presence of tunnel safety doors increases ventilation resistance, reduces effective cooling airflow, and lowers heat dissipation efficiency, failing to meet the heat dissipation requirements of multi-circuit cables and resulting in low overall cooling efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a cable heat dissipation system and its control method that can improve the heat dissipation efficiency of cables, addressing the aforementioned technical problems.

[0005] In a first aspect, this application provides a cable heat dissipation system, comprising:

[0006] Preparation mechanism, used to prepare cooling water;

[0007] A control mechanism includes a drive component and a flow control component; a first end of the drive component is connected to a first end of the preparation mechanism, and a second end of the drive component is connected to a first end of the flow control component.

[0008] The heat absorption mechanism has its first end connected to the second end of the flow control component, and its second end connected to the second end of the preparation mechanism. The preparation mechanism, the driving component, the flow control component, and the heat absorption mechanism together form a heat dissipation loop. The driving component is used to drive cooling water to flow in the heat dissipation loop in a preset direction.

[0009] In one embodiment, the preparation mechanism includes:

[0010] Preparation of components for the preparation of cooling water;

[0011] The storage component includes a first storage element and a second storage element; a first end of the first storage element is connected to a first end of the preparation component, and a second end of the second storage element is connected to a second end of the preparation component; wherein, a first end of the driving component is connected to a second end of the first storage element, and a second end of the driving component is connected to a first end of the flow control component; a first end of the heat absorption mechanism is connected to a second end of the flow control component, and a second end of the heat absorption mechanism is connected to a first end of the second storage element.

[0012] In one embodiment, the flow control component includes:

[0013] A first control element, the first end of which is connected to the second end of the drive assembly;

[0014] The second control element has its first end connected to the second end of the drive assembly.

[0015] In one embodiment, the heat-absorbing mechanism includes:

[0016] A first heat-absorbing component, the first end of which is connected to the second end of the first control component, and the second end of which is connected to the first end of the second storage component;

[0017] The second heat-absorbing component has a first end connected to the second end of the first control component and a second end connected to the first end of the second storage component.

[0018] In one embodiment, the first heat-absorbing component includes:

[0019] A water inlet component, the first end of which is connected to the second end of the first control component;

[0020] The water outlet component has a first end connected to the second end of the water inlet component, and the second end of the water outlet component is connected to the first end of the second storage component. The water inlet component and the water outlet component are sandwiched on both sides of the cable. The water inlet component is used to transport cooling water to absorb the heat transmitted by the cable. The water outlet component is used to transport the cooled water after absorbing heat to the second storage component.

[0021] In one embodiment, the water inlet component includes:

[0022] Cooling water pipes are used to transport cooling water;

[0023] Phase change material, fitted outside the cooling water pipe, is used to absorb the heat transmitted by the cable and transfer the heat to the cooling water;

[0024] The outer tube is fitted over the phase change material.

[0025] Thermally conductive material is used to fill the gaps between the phase change material and the cooling water pipe and the outer pipe; wherein, the first and second ends of the water inlet component are sealed by encapsulation material to form a sealing layer.

[0026] In one embodiment, the system further includes:

[0027] The monitoring unit, located on the side of the water inlet component, is used to detect the surface temperature of the cable.

[0028] Secondly, this application provides a control method for a cable heat dissipation system, including:

[0029] Obtain the first and second electricity costs corresponding to the first and second preset time periods respectively, and determine the working period of the cable heat dissipation system based on the electricity cost difference between the first and second electricity costs.

[0030] Obtain the current cable surface temperature;

[0031] Control the operation of the cable heat dissipation system when the cable is currently in operation or when the cable surface temperature exceeds the preset temperature.

[0032] Stop the cable cooling system when it is not currently in operation or when the cable surface temperature does not exceed the preset temperature.

[0033] In one embodiment, the steps of controlling the operation of the cable heat dissipation system include:

[0034] The control assembly, drive assembly, and flow control assembly are activated to deliver cooling water to the heat absorption mechanism, which dissipates heat from the cable and allows the phase change material to store the remaining cold energy in the cooling water.

[0035] In one embodiment, the step of stopping the operation of the cable cooling system includes:

[0036] The control assembly, drive assembly, and flow control assembly are stopped to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0037] Thirdly, this application also provides a control device for a cable heat dissipation system, comprising:

[0038] The time period determination module is used to obtain the first electricity cost and the second electricity cost corresponding to the first preset time period and the second preset time period respectively, and determine the working time period of the cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost.

[0039] Temperature acquisition module, used to acquire the current cable surface temperature;

[0040] The first control module is used to control the operation of the cable heat dissipation system when the current working period is underway or when the cable surface temperature exceeds the preset temperature.

[0041] The second control module is used to stop the operation of the cable heat dissipation system when it is not currently in a working period or when the cable surface temperature does not exceed the preset temperature.

[0042] Fourthly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method steps of any one of the second aspects.

[0043] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method steps of any one of the second aspects.

[0044] In a sixth aspect, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the method steps of any one of the second aspects.

[0045] The aforementioned cable heat dissipation system and its control method, through a heat dissipation loop composed of a preparation mechanism, a drive component, a flow control component, and a heat absorption mechanism, stabilizes and controls the cable temperature through liquid cooling circulation, thereby improving the cable's heat dissipation stability, achieving precise and efficient directional point-to-point cooling, ensuring that heat is absorbed quickly, improving heat dissipation efficiency and density, and thus increasing the cable's allowable current carrying capacity. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a structural block diagram of a cable heat dissipation system in one embodiment;

[0048] Figure 2 This is a schematic diagram of the axial structure of the water inlet component in one embodiment;

[0049] Figure 3 This is a schematic diagram of the radial structure of the water inlet component in one embodiment;

[0050] Figure 4 This is a flowchart illustrating the control method of a cable heat dissipation system in one embodiment;

[0051] Figure 5 This is a structural block diagram of the control device for a cable heat dissipation system in one embodiment;

[0052] Figure 6 This is an internal structural diagram of a computer device in one embodiment.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100 - Preparation mechanism, 110 - Preparation component, 120 - Storage component, 121 - First storage component, 122 - Second storage component, 200 - Control mechanism, 210 - Drive component, 220 - Flow control component, 221 - First control component, 222 - Second control component, 300 - Heat absorption mechanism, 310 - First heat absorption component, 311 - Water inlet component, 312 - Water outlet component, 320 - Second heat absorption component, 3111 - Cooling water pipe, 3112 - Phase change material, 3113 - Outer pipe, 3114 - Thermally conductive material, 3115 - Sealing layer, 400 - Monitoring mechanism. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application 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 and not intended to limit the scope of this application.

[0056] In the description of this application, it should be understood that if terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] Currently, implementing overhead line burial projects and laying underground cables to create a safe, stable, and fully functional underground power network is a trend in urban development. Compared to underground power cables, overhead lines are more susceptible to severe weather conditions such as strong winds, heavy snow, torrential rain, and lightning, leading to line faults and compromising residents' power supply. Furthermore, because overhead cables are exposed to the air for extended periods, they are highly vulnerable to mechanical damage, and their surface contamination increases over time, posing certain safety hazards. Underground power cables offer significant advantages: they simplify urban road access and provide reliable power supply. Compared to direct burial, duct laying, and cable trench laying methods, cable tunnels better protect cables from environmental corrosion. Their larger space can accommodate more cable loops, providing greater transmission capacity and facilitating inspection and maintenance by maintenance personnel.

[0061] Currently, research is combining the bottleneck problem of transmission capacity and heat dissipation measures for multi-circuit cables laid in tunnels, proposing a novel green and environmentally friendly heat dissipation enhancement system. Because multiple cables are laid closely together, the heat emitted by each cable heats the surrounding air and adjacent cables, forming a "heat island." This makes the ambient temperature much higher than the ambient air temperature, severely weakening the cable's heat dissipation capacity. Furthermore, tunnels are relatively enclosed spaces with poor air circulation, making heat easily accumulate. These two factors combined constitute a bottleneck in the current carrying capacity of tunnel cables. The most commonly used heat dissipation measure is fan ventilation, but the presence of tunnel safety doors increases ventilation resistance, reduces effective cooling airflow, and lowers heat dissipation efficiency. At the same time, dead zones that airflow cannot reach are easily created at cable supports, joint shafts, and bends, causing localized temperature increases. In practice, using fans for ventilation is not an effective way to reduce cable temperature.

[0062] Based on this, this application provides a cable heat dissipation enhancement system and its control method based on phase change cold storage material. Based on the cold storage function of phase change material, the cable can be effectively cooled. A dual-mode intelligent control strategy based on time-of-use electricity pricing and real-time temperature monitoring is set up, thereby significantly improving the cable current carrying capacity while achieving efficient and energy-saving operation of the system.

[0063] In one exemplary embodiment, such as Figure 1 As shown, a cable heat dissipation system is provided, including: a preparation mechanism 100, a control mechanism 200, and a heat absorption mechanism 300. The preparation mechanism 100 is used to prepare cooling water; the control mechanism 200 includes a drive component 210 and a flow control component 220; a first end of the drive component 210 is connected to a first end of the preparation mechanism 100, and a second end of the drive component 210 is connected to a first end of the flow control component 220; a first end of the heat absorption mechanism 300 is connected to a second end of the flow control component 220, and a second end of the heat absorption mechanism 300 is connected to a second end of the preparation mechanism 100; wherein the preparation mechanism 100, drive component 210, flow control component 220, and heat absorption mechanism 300 constitute a heat dissipation loop; the drive component 210 is used to drive the cooling water to flow in a preset direction within the heat dissipation loop.

[0064] The preparation mechanism 100 is a cooling water preparation system, with its first end connected to the drive component 210 and its second end connected to the heat absorption mechanism 300, forming a closed loop for cooling water circulation supply and recovery. The control mechanism 200 includes a drive component 210 and a flow control component 220. One end of the drive component 210 is connected to the preparation mechanism 100, and the other end is connected to the flow control component 220. The other end of the flow control component 220 is connected to the heat absorption mechanism 300, realizing the driving and flow regulation of cooling water flow. The heat absorption mechanism 300 is connected to the flow control component 220 and the preparation mechanism 100 at both ends, forming a complete heat dissipation loop of "preparation mechanism - drive component - flow control component - heat absorption mechanism". When the system starts to dissipate heat, the preparation mechanism 100 cools the warm water to provide a cold source for the system. In the control mechanism 200, the drive component 210 drives the cooling water to flow along the loop, and the flow control component 220 adjusts the cooling water flow rate in conjunction with the environmental monitoring module data. The heat absorption mechanism 300 is close to the cable, absorbs the heat of the cable and carries it away through the cooling water, realizing intelligent temperature control.

[0065] In this embodiment, a heat dissipation loop is formed by a preparation mechanism, a driving component, a flow control component, and a heat absorption mechanism. The cable temperature is stably controlled by liquid cooling circulation, which improves the heat dissipation stability of the cable and achieves precise and efficient directional point-to-point cooling. This ensures that heat is absorbed quickly, improves heat dissipation efficiency and density, and thus increases the allowable current carrying capacity of the cable.

[0066] In one exemplary embodiment, it remains as follows Figure 1 As shown, the preparation mechanism 100 includes a preparation component 110 and a storage component 120. The preparation component 110 is used to prepare cooling water; the storage component 120 includes a first storage element 121 and a second storage element 122; a first end of the first storage element 121 is connected to a first end of the preparation component 110, and a second end of the second storage element 122 is connected to a second end of the preparation component 110; a first end of a driving component 210 is connected to a second end of the first storage element 121, and a second end of the driving component 210 is connected to a first end of a flow control component 220; a first end of a heat absorption mechanism 300 is connected to a second end of the flow control component 220, and a second end of the heat absorption mechanism 300 is connected to a first end of the second storage element 122.

[0067] The preparation component 110 is a compressor, and the storage component 120 has a first storage unit 121 that is a cooling water storage tank and a second storage unit 122 that is a return water tank. The first end of the first storage unit 121 is connected to the first end of the preparation component 110, and the second end of the second storage unit 122 is connected to the second end of the preparation component 110, forming a closed-loop supply chain for cooling water "preparation-storage-recovery-re-preparation". The drive component 210 is a water pump, and the flow control component 220 is a smart water valve. The first end of the drive component 210 is connected to the second end of the first storage unit 121, and the second end is connected to the first end of the flow control component 220, realizing the power delivery and flow regulation of cooling water from the storage unit to the heat absorption mechanism. The heat absorption mechanism 300 is a phase change heat absorption pipe. The first end of the heat absorption mechanism 300 is connected to the second end of the flow control component 220, and the second end is connected to the first end of the second storage component 122. This completes the recovery and reflux of the cooling water after heat absorption, and finally forms a complete heat dissipation loop of "preparation component - first storage component - drive component - flow control component - heat absorption mechanism - second storage component - preparation component".

[0068] During startup, the preparation component 110 cools the warm water recovered from the second storage unit 122 into cooling water, which is then transported to the first storage unit 121 for storage and backup. The driving component 210 drives the cooling water in the first storage unit 121, and after the flow rate is adjusted by the flow control component 220, it flows into the heat absorption mechanism 300. The phase change material of the heat absorption mechanism 300 is in close contact with the cable and absorbs the heat from the cable. At the same time, the cooling water carries away the heat from the phase change material. The heated cooling water flows back to the second storage unit 122, achieving efficient utilization of cooling capacity and precise temperature control.

[0069] In this embodiment, the continuous production and caching of cooling water is achieved through the fabrication component and the dual storage component, avoiding interruption of cooling capacity. At the same time, the phase change heat absorption pipe of the heat absorption mechanism is closely attached to the cable point-to-point, and combined with the high thermal conductivity filling material, the heat transfer is direct and efficient, improving the heat dissipation efficiency of the cable.

[0070] In one exemplary embodiment, it remains as follows Figure 1 As shown, the flow control component 220 includes a first control element 221 and a second control element 222. The first end of the first control element 221 is connected to the second end of the drive component 210; the first end of the second control element 222 is also connected to the second end of the drive component 210.

[0071] In this flow control component 220, both the first control element 221 and the second control element 222 are intelligent water valves. Their first ends are connected in parallel to the second end of the drive component 210, and both second ends are connected to the water inlet pipe of the heat absorption mechanism 300. The drive component 210 extracts cooling water from the first storage unit 121 and distributes it to the first control element 221 and the second control element 222. When the temperature of a single cable is excessively high, the corresponding control element can be activated individually to increase the flow rate. When the overall temperature is stable, the two control elements work together to limit the flow, coordinating with the phase change material to store and release cold, thus optimizing the matching between flow rate and cooling capacity. Through the parallel design of the two control elements, differentiated flow distribution can be achieved for different sections of the cable and different temperature conditions, avoiding the problem of lag or insufficient accuracy in adjustment by a single control element, further improving point-to-point cooling efficiency. Furthermore, the two control elements serve as backups for each other; if either control element fails, the other can immediately take over, ensuring the continuous operation of the heat dissipation loop.

[0072] In one exemplary embodiment, it remains as follows Figure 1 As shown, the heat absorption mechanism 300 includes a first heat absorption component 310 and a second heat absorption component 320. The first end of the first heat absorption component 310 is connected to the second end of the first control component 221, and the second end of the first heat absorption component 310 is connected to the first end of the second storage component 122; the first end of the second heat absorption component 320 is connected to the second end of the first control component 221, and the second end of the second heat absorption component 320 is connected to the first end of the second storage component 122.

[0073] In this heat-absorbing mechanism 300, both the first heat-absorbing component 310 and the second heat-absorbing component 320 are phase-change heat-absorbing pipes. Their first ends are connected in parallel to the second end of the first control component 221, and their second ends are connected in parallel to the first end of the second storage component 122. The two heat-absorbing components cover the cable heat dissipation area in parallel, forming a redundant heat dissipation link. The cooling water delivered by the drive component 210 is regulated by the first control component 221 and then diverted to the first heat-absorbing component 310 and the second heat-absorbing component 320. Both heat-absorbing components are closely attached to the upper and lower sides of the cable laid in a triangular pattern (each component is attached to two cables). Cooling is provided by the inner layer cooling water pipe, the middle layer phase-change material stores and releases cold, and the high thermal conductivity material enhances heat transfer, directly absorbing the heat of the cable.

[0074] In this embodiment, by bonding multiple circuit cables in parallel with dual components, the heat dissipation contact area is maximized, avoiding the local heat island problem caused by incomplete coverage by a single component, ensuring uniform temperature across the entire line, further improving heat dissipation density, and thus increasing the cable current carrying capacity.

[0075] In one exemplary embodiment, it remains as follows Figure 1As shown, the first heat-absorbing component 310 includes a water inlet component 311 and a water outlet component 312. The first end of the water inlet component 311 is connected to the second end of the first control component 221; the first end of the water outlet component 312 is connected to the second end of the water inlet component 311, and the second end of the water outlet component 312 is connected to the first end of the second storage component 122; the water inlet component 311 and the water outlet component 312 are sandwiched between two sides of the cable; the water inlet component 311 is used to transport cooling water to absorb the heat transmitted by the cable; the water outlet component 312 is used to transport the cooled water after absorbing heat to the second storage component 122.

[0076] In this design, the first end of the water inlet component 311 of the first heat absorption component 310 is connected to the second end of the first control component 221, the first end of the water outlet component 312 is connected to the second end of the water inlet component 311, and the second end of the water outlet component 312 is connected to the first end of the second storage component 122, forming an independent heat dissipation branch of "control component-water inlet component-water outlet component-storage component". The water inlet component 311 and the water outlet component 312 are symmetrically sandwiched on both sides of the triangular cable. Both are phase change heat absorption pipes, which are in close contact with the cable surface to maximize contact heat dissipation.

[0077] The cooling water, regulated by the first control component 221, first flows into the cooling water pipe of the inlet component 311. Through the pipe wall and the high thermal conductivity material, it transfers cooling energy to the intermediate phase change material. Simultaneously, the phase change material absorbs the heat emitted by the cable. The cooled water, having absorbed heat, flows along the inlet component 311 to the outlet component 312, where it continues to carry away any remaining heat from the phase change material, further completing the heat exchange. The heated cooling water then flows back to the second storage component 122 through the outlet component 312, awaiting re-cooling and circulation. By adjusting the opening and closing degree of the first control component 221, the cooling water flow rate of the inlet component 311 is controlled. This, combined with the phase change material's cold storage and release, achieves a closed-loop, efficient operation of "cold energy transfer - heat absorption - water recycling." It is understood that the second heat-absorbing component 320 has the same structure as the first heat-absorbing component 310, also including an inlet component and an outlet component. For the specific structure, please refer to the description of the first heat-absorbing component 310 above; it will not be repeated here.

[0078] In this embodiment, by sandwiching the water inlet and outlet components on both sides of the cable, a bidirectional wrap-around heat dissipation is formed, avoiding uneven temperature caused by unilateral heat dissipation. Combined with high thermal conductivity materials, the heat transfer efficiency is improved, thereby improving the heat dissipation efficiency of the cable.

[0079] In one exemplary embodiment, such as Figure 2 and Figure 3As shown, the water inlet component 311 includes: a cooling water pipe 3111, a phase change material 3112, an outer pipe 3113, and a heat-conducting material 3114. The cooling water pipe 3111 is used to transport cooling water; the phase change material 3112 is fitted over the cooling water pipe 3111 to absorb heat transmitted by the cable and transfer it to the cooling water; the outer pipe 3113 is fitted over the phase change material 3112; the heat-conducting material 3114 fills the gaps between the phase change material 3112, the cooling water pipe 3111, and the outer pipe 3113; and the first and second ends of the water inlet component 311 form a sealing layer 3115 through an encapsulation material.

[0080] The water inlet component 311 has a four-layer nested and sealed structure. The core is the cooling water pipe 3111, which is surrounded by phase change material 3112, heat-conducting material 3114, and outer pipe 3113. Both ends are sealed with encapsulation material to form a sealing layer 3115 to prevent leakage of phase change material and overflow of cooling water. The overall structure fits tightly to the cable surface. The first end of the cooling water pipe 3111 is connected to the first control component 221, and the second end is connected to the water outlet component 312, forming the core channel for cooling water transportation and heat exchange.

[0081] The cooling water pipe 3111 receives cooling water after flow control and serves as the core carrier for cold energy transfer. The heat generated by the cable operation is transferred to the heat-conducting material 3114 through the outer pipe 3113. The high thermal conductivity of the heat-conducting material 3114 quickly conducts the heat to the phase change material 3112. After absorbing the heat, the phase change material 3112 undergoes a phase change and stably transfers the heat to the cooling water in the cooling water pipe 3111. At the same time, it stores excess cold energy. The cooling water that has absorbed the heat flows along the cooling water pipe 3111 to the water outlet component 312. The sealing layer 3115 ensures the structural seal and prevents leakage of the phase change material and loss of cold energy.

[0082] Preferably, the outer tube 3113 is a flame-retardant PVC outer sleeve with a diameter of 75 mm and a wall thickness of 2.4 mm; the middle layer is a phase change material 3112 encapsulated in a plastic film. The phase change material 3112 is based on calcium chloride hexahydrate, modified with nucleating agents and thickeners, with a phase change temperature of 23±1℃, a phase change enthalpy greater than or equal to 170 J / g, and a cycle life greater than 5000 cycles; the innermost layer is a cooling water pipe 3111 with a diameter of 25 mm and a wall thickness of 2 mm; to ensure smooth heat transfer, aluminum nitride, a high thermal conductivity material, is used to fill the gaps formed between the encapsulated phase change material 3112, the outer tube 3113, and the cooling water pipe 3111; finally, at the heat absorption pipe opening, polyethylene encapsulation technology is used to encapsulate the phase change material 3112 within high molecular weight polyethylene to prevent material leakage, increase the heat exchange surface area, and improve the rate of cold release. It is understood that the water outlet component 312 has the same structure as the water inlet component 311, and also includes cooling water pipe, phase change material, outer pipe and heat-conducting material. For the specific structure, please refer to the above description of the water inlet component 311, which will not be repeated here.

[0083] In this embodiment, by filling the gaps with a high thermal conductivity material, thermal resistance dead zones are eliminated. Combined with the efficient heat storage and release characteristics of the phase change material, the heat transfer rate and cooling accuracy are improved. The phase change material can stably store cold energy to ensure continuous heat dissipation.

[0084] In one exemplary embodiment, it remains as follows Figure 1 As shown, the system also includes a monitoring mechanism 400. The monitoring mechanism 400 is located on one side of the water inlet component 311 and is used to detect the surface temperature of the cable.

[0085] The monitoring unit 400 is a tunnel environment monitoring module composed of thermocouple sensor modules, installed every 200m on one side of the water inlet component 311, close to the cable. Its signal output terminal is electrically connected to the control units of the intelligent water valve, water pump, and compressor, forming a closed-loop control link of "temperature detection - signal transmission - intelligent regulation," integrated into the overall heat dissipation loop. The thermocouple sensors of the monitoring unit 400 detect the cable surface temperature in real time, accurately capturing temperature changes in different sections of the multi-loop cable, avoiding the omission of localized heat islands. Upon system startup, the sensors transmit temperature data to the control system in real time. The control system, combined with preset temperature thresholds and operating modes, dynamically determines heat dissipation needs. If the temperature is within a safe range, priority is given to utilizing the cooling capacity stored in the phase change material, eliminating the need to start the cooling equipment. If the temperature exceeds the threshold or the cooling capacity is depleted, the intelligent water valve is opened wider, the water pump is accelerated, and the compressor is started to replenish cooling water and enhance heat dissipation. Based on segmented monitoring data, the cooling water volume of the corresponding water inlet component can be precisely adjusted for high-temperature sections, achieving differentiated temperature control.

[0086] In one exemplary embodiment, such as Figure 4As shown, a control method for a cable heat dissipation system is provided. Wherein:

[0087] S402: Obtain the first electricity cost and the second electricity cost corresponding to the first preset time period and the second preset time period respectively, and determine the working period of the cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost.

[0088] The first preset time period corresponds to the off-peak electricity price period at night, when electricity costs are low, and is recorded as the first electricity cost. The second preset time period corresponds to the peak electricity price period during the day, when electricity costs are high, and is recorded as the second electricity cost. By calculating the difference in electricity costs between the two periods, it is determined that nighttime is the optimal working period for low-cost cold storage.

[0089] S404: Get the current cable surface temperature.

[0090] Among them, through the environmental monitoring module, sensors are distributed every 200m to collect cable surface temperature data in real time, accurately capture local heat islands and overall temperature changes, and provide key data support for system operation.

[0091] S406: Control the operation of the cable heat dissipation system when the cable is currently in operation or when the cable surface temperature exceeds the preset temperature.

[0092] If it is currently nighttime working hours, the system will be activated to circulate cooling water and store cold energy in the phase change material; if the cable surface temperature exceeds the preset safety threshold, the system will be activated regardless of whether it is working hours to replenish cooling water and enhance heat dissipation, ensuring continuous heat dissipation.

[0093] S408: Stop the operation of the cable cooling system when it is not currently in operation or when the cable surface temperature does not exceed the preset temperature.

[0094] If it is daytime and not a working period, and the cable temperature does not exceed the preset value, the cooling equipment and water pump will be stopped, and the heat dissipation will rely on the phase change material to release the cold energy stored at night; if the cable temperature is within a safe range, no additional heat dissipation is required, and the system will stop operating to reduce energy consumption and balance safety and economy.

[0095] In the control method of the above-mentioned cable heat dissipation system, by obtaining the first and second electricity costs corresponding to the first and second preset time periods respectively, and determining the working period of the cable heat dissipation system based on the electricity cost difference between the first and second electricity costs, and obtaining the current cable surface temperature, the cable heat dissipation system is controlled to operate when it is currently in the working period or when the cable surface temperature exceeds the preset temperature, and the cable heat dissipation system is stopped when it is not currently in the working period or when the cable surface temperature does not exceed the preset temperature. This can reduce operating electricity costs, alleviate peak grid pressure, avoid cable faults caused by excessive temperature, and at the same time, efficiently utilize cooling capacity, ensure stable cable temperature, and improve cable operation reliability.

[0096] In an exemplary embodiment, the steps of controlling the operation of the cable heat dissipation system include: controlling the start-up of the preparation component, the drive component and the flow control component to deliver cooling water to the heat absorption mechanism, dissipating heat from the cable through the cooling water, and causing the phase change material to store the remaining cold energy in the cooling water.

[0097] In response to off-peak electricity prices at night or trigger signals indicating cable overheating, the control system simultaneously activates the preparation component, drive component, and flow control component, establishing a complete "preparation-transportation-heat dissipation" chain. The preparation component cools the warm water in the return tank into cooling water and stores it. The drive component provides power, and the flow control component adjusts the opening to precisely deliver the cooling water to the heat absorption mechanism. The cooling water exchanges heat with the phase change material through the inner layer of the pipe, indirectly removing the heat generated by the cable and achieving active liquid cooling. After absorbing the heat from the cable, the phase change material undergoes a phase change, simultaneously capturing the remaining cold energy in the cooling water that has not been fully released. Its high phase change enthalpy value can stably store the cold energy, completing the spatiotemporal transfer of "cold energy capture-storage," ready for subsequent cooling release.

[0098] In this embodiment, by controlling the start-up of the preparation component, the drive component, and the flow control component, cooling water is delivered to the heat absorption mechanism. The cooling water dissipates heat from the cable and allows the phase change material to store the remaining cold energy in the cooling water. This reduces the operation of the refrigeration equipment during peak hours, lowers operating electricity costs, avoids wasting cold energy, extends the heat dissipation range, and further reduces energy consumption.

[0099] In one exemplary embodiment, the step of stopping the operation of the cable heat dissipation system includes: controlling the preparation component, the drive component, and the flow control component to stop so as to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0100] In response to peak daytime electricity prices or temperature targets, the control system simultaneously shuts down the preparation, drive, and flow control components, cutting off the active cooling water circulation link to avoid high-cost energy consumption during peak periods. Previously, during system operation, the phase change material stored sufficient cooling capacity, and its phase change temperature matched the cable's safe operation requirements. After the components stop, the phase change material releases the stored cooling capacity through a reverse phase change, which is quickly transferred to the cable surface via a highly thermally conductive material, continuously absorbing the heat generated by the cable's operation. The PVC outer pipe of the phase change heat absorption pipe and the polyethylene sealing layer form a sealed structure, reducing cooling capacity loss and ensuring that the stored cooling capacity is concentrated on cooling the cable until the cooling capacity is exhausted or the next startup conditions are triggered.

[0101] In this embodiment, by controlling the preparation component, driving component and flow control component to stop, the remaining cold energy stored in the phase change material is used to dissipate heat from the cable, which can reduce operating costs, effectively reduce cable temperature, reduce equipment start-up and shutdown frequency and operating time, reduce equipment wear, extend component life and reduce maintenance costs.

[0102] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0103] Based on the same inventive concept, this application also provides a control device for a cable heat dissipation system for implementing the control method of the cable heat dissipation system described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the control device for the cable heat dissipation system provided below can be found in the limitations of the control method for the cable heat dissipation system described above, and will not be repeated here.

[0104] In one exemplary embodiment, such as Figure 5 As shown, a control device for a cable heat dissipation system is provided, comprising: a time period determination module 502, a temperature acquisition module 504, a first control module 506, and a second control module 508, wherein:

[0105] The time period determination module 502 is used to obtain the first electricity cost and the second electricity cost corresponding to the first preset time period and the second preset time period respectively, and determine the working time period of the cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost.

[0106] Temperature acquisition module 504 is used to acquire the current cable surface temperature.

[0107] The first control module 506 is used to control the operation of the cable heat dissipation system when the current working period is underway or when the cable surface temperature exceeds the preset temperature.

[0108] The second control module 508 is used to stop the operation of the cable heat dissipation system when it is not currently in a working period or when the cable surface temperature does not exceed the preset temperature.

[0109] In an exemplary embodiment, the first control module 506 is further configured to control the start-up of the preparation component, the drive component, and the flow control component to deliver cooling water to the heat absorption mechanism, dissipate heat from the cable through the cooling water, and enable the phase change material to store the remaining cold energy in the cooling water.

[0110] In an exemplary embodiment, the second control module 508 is further configured to control the preparation component, the drive component, and the flow control component to stop, so as to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0111] Each module in the control device of the aforementioned cable heat dissipation system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0112] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown, the computer device includes a processor, memory, input / output interfaces, a communication interface, a display unit, and an input device. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a control method for a cable cooling system. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0113] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0114] In one exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps: obtaining a first electricity cost and a second electricity cost corresponding to a first preset time period and a second preset time period, respectively; determining the working period of a cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost; obtaining the current cable surface temperature; controlling the operation of the cable heat dissipation system when the current working period is in effect or the cable surface temperature exceeds a preset temperature; and stopping the operation of the cable heat dissipation system when the current working period is not in effect or the cable surface temperature does not exceed the preset temperature.

[0115] In one embodiment, the operation of a control cable cooling system involved in the processor executing a computer program includes: activating a control preparation component, a drive component, and a flow control component to deliver cooling water to a heat absorption mechanism, dissipating heat from the cable through the cooling water, and causing a phase change material to store the remaining cold energy in the cooling water.

[0116] In one embodiment, stopping the operation of the cable cooling system when the processor executes a computer program includes: controlling the preparation components, drive components, and flow control components to stop in order to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0117] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it performs the following steps: obtaining a first electricity cost and a second electricity cost corresponding to a first preset time period and a second preset time period, respectively; determining the working period of the cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost; obtaining the current cable surface temperature; controlling the operation of the cable heat dissipation system when the current working period is in effect or the cable surface temperature exceeds a preset temperature; and stopping the operation of the cable heat dissipation system when the current working period is not in effect or the cable surface temperature does not exceed the preset temperature.

[0118] In one embodiment, when the computer program is executed by the processor, the operation of the control cable heat dissipation system includes: activating a control preparation component, a drive component, and a flow control component to deliver cooling water to the heat absorption mechanism, dissipating heat from the cable through the cooling water, and causing the phase change material to store the remaining cold energy in the cooling water.

[0119] In one embodiment, the computer program, when executed by a processor, involves stopping the operation of the cable cooling system, including: controlling the preparation components, drive components, and flow control components to stop in order to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0120] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps: obtaining a first electricity cost and a second electricity cost corresponding to a first preset time period and a second preset time period, respectively; determining the operating period of the cable heat dissipation system based on the electricity cost difference between the first electricity cost and the second electricity cost; obtaining the current cable surface temperature; controlling the operation of the cable heat dissipation system when the current operating period is in effect or the cable surface temperature exceeds a preset temperature; and stopping the operation of the cable heat dissipation system when the current operating period is not in effect or the cable surface temperature does not exceed the preset temperature.

[0121] In one embodiment, when the computer program is executed by the processor, the operation of the control cable heat dissipation system includes: activating a control preparation component, a drive component, and a flow control component to deliver cooling water to the heat absorption mechanism, dissipating heat from the cable through the cooling water, and causing the phase change material to store the remaining cold energy in the cooling water.

[0122] In one embodiment, the computer program, when executed by a processor, involves stopping the operation of the cable cooling system, including: controlling the preparation components, drive components, and flow control components to stop in order to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

[0123] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0124] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0125] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A cable heat dissipation system, characterized in that, include: Preparation mechanism, used to prepare cooling water; Control mechanism, including drive components and flow control components; The first end of the driving component is connected to the first end of the preparation mechanism, and the second end of the driving component is connected to the first end of the flow control component; A heat-absorbing mechanism is provided, wherein a first end of the heat-absorbing mechanism is connected to a second end of the flow control component, and a second end of the heat-absorbing mechanism is connected to a second end of the preparation mechanism; wherein the preparation mechanism, the driving component, the flow control component, and the heat-absorbing mechanism constitute a heat dissipation loop; the driving component is used to drive the cooling water to flow in the heat dissipation loop in a preset direction.

2. The cable heat dissipation system according to claim 1, characterized in that, The preparation mechanism includes: A preparation component for preparing cooling water; A storage component includes a first storage element and a second storage element; a first end of the first storage element is connected to a first end of the preparation component, and a second end of the second storage element is connected to a second end of the preparation component; wherein, a first end of a driving component is connected to the second end of the first storage element, and a second end of the driving component is connected to a first end of the flow control component; a first end of a heat absorption mechanism is connected to the second end of the flow control component, and a second end of the heat absorption mechanism is connected to the first end of the second storage element.

3. The cable heat dissipation system according to claim 2, characterized in that, The flow control component includes: A first control element, wherein a first end of the first control element is connected to a second end of the drive assembly; The second control element has a first end connected to the second end of the drive assembly.

4. The cable heat dissipation system according to claim 3, characterized in that, The heat absorption mechanism includes: A first heat-absorbing component, wherein a first end of the first heat-absorbing component is connected to a second end of the first control component, and a second end of the first heat-absorbing component is connected to a first end of the second storage component; The second heat-absorbing component has a first end connected to the second end of the first control component and a second end connected to the first end of the second storage component.

5. The cable heat dissipation system according to claim 4, characterized in that, The first heat-absorbing component includes: A water inlet component, wherein a first end of the water inlet component is connected to a second end of the first control component; A water outlet component, wherein a first end of the water outlet component is connected to a second end of the water inlet component, and the second end of the water outlet component is connected to a first end of the second storage component; wherein the water inlet component and the water outlet component are sandwiched between two sides of the cable; the water inlet component is used to transport the cooling water to absorb the heat transmitted by the cable; the water outlet component is used to transport the cooled water after absorbing heat to the second storage component.

6. The cable heat dissipation system according to claim 5, characterized in that, The water inlet component includes: Cooling water pipes are used to transport the cooling water; A phase change material is fitted over the outside of the cooling water pipe to absorb the heat transmitted by the cable and transfer the heat to the cooling water. The outer tube is fitted over the outside of the phase change material; A thermally conductive material is used to fill the gap between the phase change material, the cooling water pipe, and the outer pipe; wherein the first and second ends of the water inlet component are sealed with a sealing layer formed by an encapsulating material.

7. The cable heat dissipation system according to claim 5, characterized in that, Also includes: A monitoring device, located on one side of the water inlet component, is used to detect the surface temperature of the cable.

8. A control method for a cable heat dissipation system, characterized in that, Applied to the cable heat dissipation system according to any one of claims 1-7; the method includes: The first and second electricity costs corresponding to the first and second preset time periods are obtained respectively. Based on the electricity cost difference between the first and second electricity costs, the working period of the cable heat dissipation system is determined. Obtain the current cable surface temperature; When the cable is currently in the specified working period or when the cable surface temperature exceeds the preset temperature, the cable heat dissipation system is controlled to operate. If the current working period is not in effect, or if the cable surface temperature does not exceed the preset temperature, the cable heat dissipation system shall be stopped.

9. The method according to claim 8, characterized in that, The control of the cable heat dissipation system includes: The control assembly, drive assembly, and flow control assembly are activated to deliver cooling water to the heat absorption mechanism, through which the cooling water dissipates heat from the cable, and allows the phase change material to store the remaining cold energy in the cooling water.

10. The method according to claim 9, characterized in that, The step of stopping the operation of the cable heat dissipation system includes: The preparation component, the driving component, and the flow control component are stopped to dissipate heat from the cable using the remaining cold energy stored in the phase change material.

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