An energy-saving copper alloy conductor power cable

Abstract

This invention discloses an energy-saving copper alloy conductor power cable, applicable to the field of power cables. Through the composite heat dissipation design of the cable body, a three-dimensional heat dissipation system can be formed inside the cable body, avoiding insulation aging caused by local overheating of the cable, and forming a core transmission link of low resistance, high insulation and fast heat dissipation, reducing heat loss and insulation aging risk in power transmission. Through the designed pressure-bearing structure, a positive pressure environment is formed by dry gas to prevent moisture intrusion. Combined with the mechanical buffer of the deformation adaptation component and the real-time early warning of the pressure sensing component, a three-dimensional protection system of physical protection, environmental isolation and fault monitoring is constructed to adapt to complex laying environments.

Description

Technical Field

[0001] This invention belongs to the field of power cables, and specifically relates to an energy-saving copper alloy conductor power cable. Background Technology

[0002] With the rapid development of the social economy, the demand for electricity continues to grow, which puts forward higher requirements for the efficiency and energy saving of power transmission. In the power transmission system, power cables are key components, and their performance directly affects the efficiency and quality of power transmission.

[0003] While traditional copper conductor power cables have good conductivity, they have certain limitations in terms of resource utilization and energy saving. Aluminum conductor cables can alleviate the copper resource shortage to some extent, but they have many performance defects such as low current carrying capacity and poor aging resistance. At present, common improvement methods, such as using new copper alloys with high conductivity, can improve conductivity to some extent, but there is still much room for improvement in further reducing resistance, improving heat dissipation efficiency, and enhancing the overall performance of the cable.

[0004] Furthermore, in the field of power transmission, the operating environment of power cables is becoming increasingly complex, often facing problems such as mechanical external force compression, bending, and erosion in humid environments. The protective structure of traditional cables is mostly rigid or simple elastic structure, which is difficult to effectively buffer when subjected to large external forces, easily leading to damage to the internal insulation layer, conductors, etc., thereby affecting the electrical performance and service life of the cable. Moreover, in humid environments, external moisture and humidity can easily penetrate into the cable, causing a decrease in insulation performance and increasing safety hazards such as leakage and short circuits. Summary of the Invention

[0005] The purpose of this invention is to address an existing energy-saving copper alloy conductor power cable. Its advantages include a composite heat dissipation design in the cable body, which forms a three-dimensional heat dissipation system inside the cable body, avoiding insulation aging caused by local overheating, and forming a core transmission link of low resistance, high insulation, and fast heat dissipation, reducing heat loss and insulation aging risks during power transmission. Furthermore, the designed pressure-bearing structure uses dry gas to create a positive pressure environment to prevent moisture intrusion. Combined with the mechanical buffer of the deformation adaptation component and the real-time early warning of the pressure sensing component, a three-dimensional protection system of physical protection, environmental isolation, and fault monitoring is constructed to adapt to complex laying environments.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an energy-saving copper alloy conductor power cable, comprising a cable body, the cable body comprising a shielding layer, a heat dissipation layer disposed inside the shielding layer, and a main insulation layer disposed inside the heat dissipation layer, the main insulation layer comprising a plurality of sub-insulation layers disposed inside the main insulation layer, and a conductor structure disposed inside the sub-insulation layers, and a pressure-bearing structure disposed on the surface of the shielding layer;

[0007] The pressure-bearing structure includes an inner sheath and an outer sheath. The inner sheath is disposed on the surface of the shielding layer, and dry gas is filled between the inner and outer sheaths to form a positive pressure environment. Several connecting rings are sleeved on the top and bottom of the surface of the inner sheath, and a connecting plate is disposed between the several connecting rings. A snap-fit ​​component is disposed on one side of the connecting plate, and the snap-fit ​​component is connected to the outer sheath. A deformation-adaptive component is disposed between the snap-fit ​​component and the connecting plate. Several pressure sensing components are bolted to the side of the connecting plate near the snap-fit ​​component.

[0008] By adopting the above technical solution, a pressure-bearing structure is set up, and dry gas (such as nitrogen) is filled between the inner and outer sheaths to form a slight positive pressure. The pressure difference is used to prevent external moisture and humidity from entering the cable through gaps, thus eliminating the risk of insulation moisture from the source. When the cable is squeezed or bent, the force on the outer sheath is transmitted to the connecting plate through the snap-fit ​​component, driving the deformation adaptation component to move in tandem. The impact energy is absorbed through spring deformation and linkage mechanism, avoiding the transmission of rigid stress to the cable body. The pressure sensing component senses the gas pressure change between the inner and outer sheaths and monitors the gas pressure in real time. It can trigger an alarm for pressure abnormalities (leakage or overpressure), and can work without power supply, making it suitable for power-free or explosion-proof scenarios.

[0009] The invention is further configured such that: the deformation adaptation component includes two sliders, which are slidably connected inside the connecting plate; damping rods are bolted to opposite sides of the two sliders, and the damping rods are connected to the inner wall of the connecting plate on the side closer to the inner wall; a first spring is sleeved on the surface of the damping rod, and the first spring is connected to both the slider and the inner wall of the connecting plate on the side closer to the slider and the inner wall of the connecting plate, respectively; a telescopic rod is snapped into the bottom of the snap-fit ​​component, and the bottom of the telescopic rod is connected to the inner wall of the connecting plate; a connecting sleeve is sleeved on the bottom of the surface of the telescopic rod, and connecting rods are rotatably connected to the front and rear sides inside the connecting sleeve; the other end of the connecting rod is rotatably connected to the slider; a second spring is sleeved on the surface of the telescopic rod, and the top and bottom of the second spring are connected to the connecting sleeve and the inner wall of the connecting plate, respectively.

[0010] By adopting the above technical solution, when the outer sheath is compressed, the locking component pushes the telescopic rod, causing the telescopic rod to be compressed and shortened, and simultaneously driving the connecting sleeve to move downward. At the same time, the connecting rod pulls the slider to slide towards each other in the sliding groove, compressing the first spring and the second spring. The spring deformation absorbs energy, and the damping rod provides motion damping to reduce the impact speed. The deformation adaptation component adopts a double spring plus connecting rod mechanism to achieve bidirectional buffering. The damping rod suppresses the vibration amplitude and avoids the sheath rupture caused by instantaneous impact.

[0011] The present invention is further configured such that: a sliding groove is provided inside the connecting plate, the slider is located inside the sliding groove, and limit protrusions are provided on both sides of the slider, and the surface of the limit protrusions slides in contact with the inner wall of the connecting plate.

[0012] By adopting the above technical solution, the cooperation between the limiting protrusion and the sliding groove ensures the accuracy of the slider movement, prevents jamming or structural failure caused by lateral offset, and improves the durability of the deformation-adaptive component.

[0013] The present invention is further configured such that: the snap-fit ​​assembly includes a reinforcing rib, the top of the reinforcing rib is connected to the outer sheath and is integrally formed with the outer sheath, the bottom of the reinforcing rib is provided with a snap-fit ​​protrusion, a fixing plate is sleeved on the surface of the snap-fit ​​protrusion, a plurality of toothed blocks are provided on both sides inside the fixing plate, a toothed groove is opened on one side of the snap-fit ​​protrusion corresponding to the toothed block for cooperating with the toothed block, the toothed block is located inside the toothed groove, an elastic plate is provided on the side of the toothed block near the inner wall of the fixing plate, a moving rod is provided between the plurality of elastic plates, and abutment plates are provided on both sides inside the snap-fit ​​protrusion, the front end of the abutment plate is fixedly connected to the snap-fit ​​protrusion, and the other end is a free end.

[0014] By adopting the above technical solution and setting up a snap-fit ​​assembly, during the installation of the outer sheath, the snap-fit ​​protrusion of the reinforcing rib can be aligned with the fixing plate and moved in the preset groove inside it. During the movement, the abutment plate first presses against the toothed block. Utilizing the elasticity of the elastic plate, the toothed block deforms inward toward the fixing plate, facilitating the subsequent movement of the toothed groove to the position of the toothed block. After the abutment plate separates from the toothed block, the toothed block is elastically deformed under pressure and then embedded in the toothed groove. The elastic plate provides a restoring force to ensure that the toothed block and the toothed groove are tightly engaged, realizing the connection between the reinforcing rib and the fixing plate and preventing axial displacement of the outer sheath. During disassembly, pushing the two moving rods to move in opposite directions causes the elastic plate to flatten again inward toward the fixing plate, causing the toothed block to disengage from the toothed groove, thus separating the snap-fit ​​protrusion from the fixing plate. The mechanical engagement of the toothed block and the toothed groove provides a high-strength connection, and the elastic plate ensures that it will not loosen under long-term vibration.

[0015] The present invention is further configured such that: the reinforcing rib is T-shaped and distributed axially along the inner wall of the outer sheath; a positioning protrusion is provided on the front side inside the fixing plate; and the inner wall of the snap-fit ​​protrusion contacts the positioning protrusion.

[0016] By adopting the above technical solution, the T-shaped structure enhances the bending resistance of the reinforcing ribs, reduces the indentation deformation of the outer sheath under stress, and the positioning protrusion ensures the installation accuracy of the snap-fit ​​components, avoids connection failure caused by misalignment of the toothed blocks and toothed grooves, and enhances structural stability.

[0017] The present invention is further configured such that: a clearance groove is provided inside the fixed plate on one side corresponding to the elastic plate, and both the moving rod and the elastic plate are inside the clearance groove; the front end of the elastic plate is connected to the inner wall of the clearance groove, and the other end is a movable end.

[0018] By adopting the above technical solution, the space provided by the clearance groove for the elastic plate is used to ensure the smooth extension and contraction of the toothed block, avoiding damage caused by rigid contact. The elastic restoring force of the elastic plate ensures the continuous tight engagement between the toothed block and the tooth groove, preventing loosening caused by vibration or impact, and improving the reliability of the connection.

[0019] The invention is further configured such that: the pressure sensing component includes a fixed column, the fixed column is bolted to one side near the connecting plate, micro switches are provided at the top and bottom of both sides inside the fixed column, an abutment block is slidably disposed inside the fixed column, the abutment block is used in conjunction with the micro switches, a guide rod is bolted to one side of the abutment block, and a pressure cap is connected to the side of the guide rod away from the abutment block, an elastic metal diaphragm is in contact with the side of the pressure cap near the guide rod, and the edge of the elastic metal diaphragm is connected to the inner wall of the fixed column, and one end of the guide rod slides through the interior of the elastic metal diaphragm.

[0020] Using the above technical solution, by setting a pressure sensing component, the dry gas between the inner and outer sheaths is maintained at a set positive pressure, the elastic metal diaphragm maintains its initial shape, the contact block and the micro switch maintain a safe distance, and the alarm circuit is disconnected. In the case of a gas pressure drop (such as a leak), due to the decrease in gas pressure, the elastic metal diaphragm overcomes the gas pressure and pushes the pressure cap upward, simultaneously causing the guide rod to move the contact block, so that the contact block contacts the micro switch at the top, thereby triggering a signal and transmitting the signal to the outside. In the case of an abnormally high pressure (such as a cable being squeezed), the pressure between the inner and outer sheaths increases, the pressure cap transmits the pressure to the elastic metal diaphragm, and the guide rod pushes the contact block downward, contacting the micro switch at the bottom, which can trigger an overpressure alarm. This allows the built-in warning structure to transmit to the outside. Through the elastic metal diaphragm's sensitivity to pressure changes and the micro switch's response threshold, a mechanical trigger alarm for leakage or overpressure is achieved.

[0021] The present invention is further configured such that: the inner wall of the pressure cap is provided with a plurality of flow channels in a ring shape, and the flow channels are arranged radially and extend from the center to the edge.

[0022] By adopting the above technical solution, the pressure is evenly applied to the diaphragm through radial guide grooves, which improves the pressure sensing accuracy, avoids diaphragm fatigue damage caused by local high pressure, extends the service life of the pressure sensing component, and ensures the reliability of the alarm system.

[0023] The present invention is further configured such that: the heat dissipation layer includes a graphene braided tape, the graphene braided tape is wrapped around the surface of the total insulating layer, and a plurality of heat dissipation fins are distributed along the axial direction on the surface of the graphene braided tape.

[0024] By adopting the above technical solution, the heat generated by the conductor structure is conducted to the graphene braided tape through the total insulation layer by setting a heat dissipation layer. The high thermal conductivity of graphene quickly transfers the heat along the axial direction. The heat dissipation fins increase the surface area, and the longitudinal heat dissipation channels promote air convection and accelerate heat dissipation. The three-dimensional heat dissipation structure improves heat dissipation efficiency, avoids the increase in resistance and insulation aging caused by long-term high temperature of the conductor, extends the service life of the cable, and reduces the environmental heat load.

[0025] The present invention is further configured such that: the surface of the total insulating layer is provided with a plurality of recesses in a ring shape, and the recesses and the graphene braided tape form a longitudinal heat dissipation channel.

[0026] By adopting the above technical solution and setting the recessed part, when the cable body is running, the heat can be quickly conducted away along the longitudinal heat dissipation channel, effectively reducing the temperature of the cable body and improving the service life of the total insulation layer. At the same time, the recessed part can also increase the flexibility of the total insulation layer, making the cable body bend better.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. The cable body is composed of a shielding layer, a heat dissipation layer, a main insulation layer, sub-insulation layers, and a conductor structure. The copper alloy conductor adopts a multi-strand stranded structure. The sub-insulation layers isolate the single-core conductors, and the main insulation layer wraps around to form overall insulation, reducing eddy current losses and interphase interference. The heat dissipation layer tightly wraps around the main insulation layer, and its two-dimensional heat conduction network quickly dissipates the conductor heat. Combined with axial heat dissipation fins and longitudinal heat dissipation channels, a three-dimensional heat dissipation system is formed to avoid insulation aging caused by local overheating. The shielding layer is made of highly conductive metal material, which effectively blocks external electromagnetic interference and serves as the mechanical support foundation for the pressure-bearing structure, improving the overall rigidity of the cable.

[0029] 2. By setting up a pressure-bearing structure, dry gas (such as nitrogen) is filled between the inner and outer sheaths to form a slight positive pressure. The pressure difference prevents external moisture and humidity from entering the cable through gaps, eliminating the risk of insulation moisture from the source. When the cable is squeezed or bent, the force on the outer sheath is transmitted to the connecting plate through the snap-fit ​​component, driving the deformation adaptation component to move in tandem. The impact energy is absorbed through spring deformation and linkage mechanism, avoiding the transmission of rigid stress to the cable body. The pressure sensing component senses the gas pressure change between the inner and outer sheaths and monitors the gas pressure in real time. It can trigger an alarm for abnormal pressure (leakage or overpressure). It can work without power supply and is suitable for power-free or explosion-proof scenarios. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the pressure-bearing structure of the present invention;

[0032] Figure 3 This is a schematic diagram showing the connection between the deformation-adaptive component, the snap-fit ​​component, and the connecting plate of the present invention;

[0033] Figure 4 This is a schematic diagram of the snap-fit ​​assembly structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the pressure sensing component structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the main cable structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection between the overall insulation layer and the heat dissipation layer of the present invention.

[0037] Reference numerals: 1. Cable body; 11. Shielding layer; 12. Heat dissipation layer; 121. Graphene braided tape; 122. Heat dissipation fins; 13. Total insulation layer; 14. Sub-insulation layer; 15. Conductor structure; 2. Pressure-bearing structure; 21. Inner sheath; 22. Outer sheath; 23. Connecting collar; 24. Connecting plate; 25. Snap-fit ​​assembly; 251. Reinforcing rib; 252. Snap-fit ​​protrusion; 253. Fixing plate; 254. Toothed block; 255. Toothed groove; 256. Elastic plate; 257. 258. Moving rod; 26. Contact plate; 27. Deformation adaptation component; 28. Slider; 29. ​​Damping rod; 20. First spring; 20. Telescopic rod; 21. Connecting sleeve; 22. Linkage rod; 23. Second spring; 24. Pressure sensing component; 255. Fixed column; 26. Micro switch; 276. Contact block; 277. Guide rod; 278. Pressure cap; 29. ​​Elastic metal diaphragm; 20. Limiting protrusion; 20. Relief groove; 20. Flow guide groove; 21. Recess. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Example 1:

[0040] refer to Figure 1 , 67. An energy-saving copper alloy conductor power cable includes a cable body 1, which includes a shielding layer 11. A heat dissipation layer 12 is disposed inside the shielding layer 11, and a main insulation layer 13 is disposed inside the heat dissipation layer 12. A plurality of sub-insulation layers 14 are disposed inside the main insulation layer 13, and conductor structures 15 are disposed inside the sub-insulation layers 14. A pressure-bearing structure 2 is disposed on the surface of the shielding layer 11. The cable body 1 is thus composed of the shielding layer 11, the heat dissipation layer 12, the main insulation layer 13, the sub-insulation layers 14, and the conductor structures 15. The copper alloy conductor adopts a multi-strand stranded structure, with a single-core conductor isolated by an insulation layer 14, and a total insulation layer 13 wrapping it to form overall insulation, reducing eddy current loss and interphase interference. The heat dissipation layer 12 tightly wraps around the total insulation layer 13, and its two-dimensional heat conduction network quickly dissipates the conductor's heat. Combined with the axial heat dissipation fins 122 and the longitudinal heat dissipation channels, a three-dimensional heat dissipation system is formed to avoid insulation aging caused by local overheating. The shielding layer 11 is made of highly conductive metal material, which effectively blocks external electromagnetic interference and also serves as the mechanical support foundation for the pressure-bearing structure 2, improving the overall rigidity of the cable.

[0041] like Figure 7 As shown, the heat dissipation layer 12 includes a graphene braided tape 121, which is wrapped around the surface of the total insulation layer 13. Several heat dissipation fins 122 are distributed axially on the surface of the graphene braided tape 121. By setting the heat dissipation layer 12, the heat generated by the conductor structure 15 is conducted to the graphene braided tape 121 through the total insulation layer 13. The high thermal conductivity of graphene quickly transfers the heat axially. The heat dissipation fins 122 increase the surface area, and the longitudinal heat dissipation channel promotes air convection and accelerates heat dissipation. The three-dimensional heat dissipation structure improves heat dissipation efficiency, avoids the increase in resistance and insulation aging caused by long-term high temperature of the conductor, extends the service life of the cable, and reduces the environmental heat load.

[0042] like Figure 7 As shown, the surface of the total insulation layer 13 is provided with a number of recesses 6 in a ring shape, and the recesses 6 and the graphene braided tape 121 form a longitudinal heat dissipation channel. By providing the recesses 6, when the cable body 1 is running, the heat can be quickly conducted away along the longitudinal heat dissipation channel, effectively reducing the temperature of the cable body 1 and improving the service life of the total insulation layer 13. At the same time, the recesses 6 can also increase the flexibility of the total insulation layer 13, making the cable body 1 have better bending performance.

[0043] Brief description of usage: When the cable is connected to the power system, current begins to be transmitted through conductor structure 15. Conductor structure 15 is made of copper alloy material, which effectively reduces resistance loss during power transmission due to its excellent conductivity. Individual insulation layers 14 tightly wrap each conductor to achieve electrical isolation and prevent phase-to-phase short circuits. The total insulation layer 13 completely covers all individual insulation layers 14, further enhancing insulation performance and ensuring that current is transmitted in a safe electrical environment. Conductor structure 15 generates heat when transmitting power. This heat is first conducted to the total insulation layer 13. The recessed portion 6 on the surface of the total insulation layer 13 and the graphene braided tape 121 wrapped around it form a longitudinal heat dissipation channel, and the heat is conducted through the total insulation layer 13 to the graphene braided tape 121. 1. Utilizing the high thermal conductivity of graphene, heat is rapidly transferred along the axial direction. Simultaneously, the heat dissipation fins 122 distributed axially on the surface of the graphene braided tape 121 increase the heat dissipation area. When the cable is running, air can flow within the longitudinal heat dissipation channel, promoting air convection and accelerating heat dissipation into the surrounding environment, thereby reducing the internal temperature of the cable and preventing increased conductor resistance and insulation aging due to high temperature. The shielding layer 11, wrapped around the heat dissipation layer 12, is made of a highly conductive metal material, which can effectively block external electromagnetic interference and prevent external electromagnetic fields from affecting the internal current transmission of the cable, ensuring the stability of power transmission. At the same time, the shielding layer 11 also provides a mechanical support foundation for the pressure-bearing structure 2, enhancing the overall rigidity and compressive strength of the cable.

[0044] Example 2:

[0045] refer to Figure 2-5The pressure-bearing structure 2 includes an inner sheath 21 and an outer sheath 22. The inner sheath 21 is disposed on the surface of the shielding layer 11, and dry gas is filled between the inner sheath 21 and the outer sheath 22 to form a positive pressure environment. Several connecting rings 23 are sleeved on the top and bottom of the surface of the inner sheath 21, and connecting plates 24 are disposed between the several connecting rings 23. A snap-fit ​​component 25 is disposed on one side of the connecting plate 24, and the snap-fit ​​component 25 is connected to the outer sheath 22. A deformation-adaptive component 26 is disposed between the snap-fit ​​component 25 and the connecting plate 24. Several pressure-sensing components 27 are bolted to the side of the connecting plate 24 near the snap-fit ​​component 25. By setting the pressure-bearing structure 2, the inner sheath... The space between the inner sheath 21 and the outer sheath 22 is filled with dry gas (such as nitrogen) to form a slight positive pressure. The pressure difference prevents external moisture and humidity from entering the cable through the gaps, eliminating the risk of insulation moisture from the source. When the cable is squeezed or bent, the force on the outer sheath 22 is transmitted to the connecting plate 24 through the snap-fit ​​component 25, driving the deformation adaptation component 26 to move in coordination. The impact energy is absorbed through the spring deformation and linkage mechanism, preventing rigid stress from being transmitted to the cable body 1. The pressure sensing component 27 senses the gas pressure change between the inner sheath 21 and the outer sheath 22 and monitors the gas pressure in real time. It can trigger an alarm for abnormal pressure (leakage or overpressure). It can work without power and is suitable for power-free or explosion-proof scenarios.

[0046] like Figure 3 As shown, the deformation adaptation component 26 includes two sliders 261, which are slidably connected to the inside of the connecting plate 24. Damping rods 262 are bolted to opposite sides of each slider 261, with the side of the damping rod 262 closest to the inner wall of the connecting plate 24 connected to it. A first spring 263 is sleeved on the surface of the damping rod 262, and the side of the first spring 263 closest to both the slider 261 and the inner wall of the connecting plate 24 is connected to both. A telescopic rod 264 is snapped into the bottom of the snap-fit ​​component 25, and the bottom of the telescopic rod 264 is connected to the inner wall of the connecting plate 24. A connecting sleeve 265 is sleeved on the bottom of the surface of the telescopic rod 264, and connecting rods 266 are rotatably connected to the front and rear sides of the connecting sleeve 265. The other end of the connecting rod 266 rotates with the slider 261. The telescopic rod 264 is connected to a second spring 267, with the top and bottom of the second spring 267 connected to the inner walls of the connecting sleeve 265 and the connecting plate 24, respectively. By setting the deformation adaptation component 26, when the outer sheath 22 is compressed, the locking component 25 pushes the telescopic rod 264, causing the telescopic rod 264 to be compressed and shortened, and simultaneously driving the connecting sleeve 265 to move down. At the same time, the connecting rod 266 pulls the slider 261 to slide towards each other in the sliding groove, compressing the first spring 263 and the second spring 267. The spring deformation absorbs energy, and the damping rod 262 provides motion damping to reduce the impact speed. The deformation adaptation component 26 adopts a double spring and connecting rod mechanism to achieve bidirectional buffering, and the damping rod 262 suppresses the vibration amplitude to avoid the sheath rupture caused by instantaneous impact.

[0047] like Figure 3 As shown, the connecting plate 24 has a sliding groove inside, and the slider 261 is located inside the sliding groove. Both sides of the slider 261 are provided with limiting protrusions 3, and the surface of the limiting protrusions 3 slides in contact with the inner wall of the connecting plate 24. The cooperation between the limiting protrusions 3 and the sliding groove ensures the movement accuracy of the slider 261, prevents jamming or structural failure caused by lateral offset, and improves the durability of the deformation adaptation component 26.

[0048] like Figure 4 As shown, the snap-fit ​​assembly 25 includes a reinforcing rib 251. The top of the reinforcing rib 251 is connected to the outer sheath 22 and is integrally formed with the outer sheath 22. The bottom of the reinforcing rib 251 is provided with a snap-fit ​​protrusion 252. A fixing plate 253 is sleeved on the surface of the snap-fit ​​protrusion 252. Several toothed blocks 254 are provided on both sides inside the fixing plate 253. The snap-fit ​​protrusion 252 has a toothed groove 255 on one side corresponding to the toothed block 254, which is used to cooperate with the toothed block 254. Inside the tooth groove 255, an elastic plate 256 is provided on the side of the tooth block 254 near the inner wall of the fixing plate 253. A moving rod 257 is provided between several elastic plates 256. Both sides of the inside of the snap-fit ​​protrusion 252 are provided with abutment plates 258, and the front end of the abutment plate 258 is fixedly connected to the snap-fit ​​protrusion 252, while the other end is a free end. By setting the snap-fit ​​assembly 25, when the outer sheath 22 is installed, the snap-fit ​​protrusion 252 of the reinforcing rib 251 can be aligned with the fixing plate 253. 53 moves within its preset slot. During this movement, the abutment plate 258 first presses against the toothed block 254. Utilizing the elasticity of the elastic plate 256, the toothed block 254 deforms inward toward the fixed plate 253, facilitating the subsequent movement of the toothed groove 255 to the position of the toothed block 254. After the abutment plate 258 separates from the toothed block 254, the toothed block 254, under pressure, elastically deforms and embeds into the toothed groove 255. The elastic plate 256 provides a restoring force to ensure a tight fit between the toothed block 254 and the toothed groove 255. The meshing mechanism connects the reinforcing rib 251 to the fixing plate 253 and prevents axial displacement of the outer sheath 22. During disassembly, the two moving rods 257 are pushed to move in opposite directions, causing the elastic plate 256 to flatten again towards the inside of the fixing plate 253, so that the toothed block 254 disengages from the tooth groove 255. This separates the snap-fit ​​protrusion 252 from the fixing plate 253. The mechanical meshing of the toothed block 254 and the tooth groove 255 provides a high-strength connection, and the elastic plate 256 ensures that it does not loosen under long-term vibration.

[0049] like Figure 4As shown, the reinforcing rib 251 is T-shaped and distributed axially along the inner wall of the outer sheath 22. The front side of the fixed plate 253 is provided with a positioning protrusion. The inner wall of the snap-fit ​​protrusion 252 contacts the positioning protrusion. The T-shaped structure improves the bending resistance of the reinforcing rib 251, reduces the indentation deformation of the outer sheath 22 under stress, and ensures the installation accuracy of the snap-fit ​​component 25, avoiding connection failure caused by misalignment of the tooth block 254 and the tooth groove 255, thus enhancing the structural stability.

[0050] like Figure 4 As shown, the fixed plate 253 has a relief groove 4 inside on the side corresponding to the elastic plate 256, and both the moving rod 257 and the elastic plate 256 are inside the relief groove 4. The front end of the elastic plate 256 is connected to the inner wall of the relief groove 4, and the other end is the movable end. The relief groove 4 provides deformation space for the elastic plate 256, ensuring the smooth extension and retraction of the tooth block 254 and avoiding damage caused by rigid contact. The elastic restoring force of the elastic plate 256 ensures the continuous tight engagement between the tooth block 254 and the tooth groove 255, preventing loosening caused by vibration or impact and improving the reliability of the connection.

[0051] like Figure 5 As shown, the pressure sensing component 27 includes a fixed post 271, which is bolted to the side near the connecting plate 24. Microswitches 272 are installed at the top and bottom of both sides inside the fixed post 271. An abutment block 273 is slidably disposed inside the fixed post 271, cooperating with the microswitches 272. A guide rod 274 is bolted to one side of the abutment block 273, and a pressure cap 275 is connected to the side of the guide rod 274 away from the abutment block 273. An elastic metal diaphragm 276 contacts the side of the pressure cap 275 near the guide rod 274, and the edge of the elastic metal diaphragm 276 is connected to the inner wall of the fixed post 271. One end of the guide rod 274 slides through the interior of the elastic metal diaphragm 276. By setting the pressure sensing component 27, the dry gas between the inner sheath 21 and the outer sheath 22 maintains a set positive pressure, the elastic metal diaphragm 276 maintains its initial shape, and the abutment block 273... 3. Maintain a safe distance from the micro switch 272, and the alarm circuit is disconnected. In the event of a decrease in gas pressure (such as a leak), the elastic metal diaphragm 276 overcomes the gas pressure and pushes the pressure cap 275 upward due to the decrease in gas pressure. Simultaneously, the guide rod 274 drives the contact block 273 to move, causing the contact block 273 to contact the micro switch 272 at the top, thereby triggering a signal and transmitting the signal to the outside. In the event of an abnormal increase in pressure (such as a cable being squeezed), the pressure between the inner sheath 21 and the outer sheath 22 increases. The pressure cap 275 transmits the pressure to the elastic metal diaphragm 276, and the guide rod 274 pushes the contact block 273 downward, contacting the micro switch 272 at the bottom. This can trigger an overpressure alarm, allowing the built-in warning structure to transmit the alarm to the outside. The elastic metal diaphragm 276 is sensitive to pressure changes, and the micro switch 272 responds to the threshold, realizing a mechanical trigger alarm for leakage or overpressure.

[0052] like Figure 5 As shown, the inner wall of the pressure cap 275 is provided with a number of flow guide grooves 5 in a ring shape, and the flow guide grooves 5 are arranged radially and extend from the center to the edge. The radial flow guide grooves 5 make the pressure act evenly on the diaphragm, improve the pressure sensing accuracy, avoid diaphragm fatigue damage caused by local high pressure, extend the service life of the pressure sensing component 27, and ensure the reliability of the alarm system.

[0053] Brief description of the usage process: The connecting ring 23 is fitted between the inner sleeves 21 and secured tightly with bolts. Then, the snap-fit ​​protrusion 252 of the reinforcing rib 251 is aligned with the fixing plate 253 and moved within its pre-set groove. During this movement, the abutment plate 258 first presses against the toothed block 254. Utilizing the elasticity of the elastic plate 256, the toothed block 254 deforms inwards towards the fixing plate 253, facilitating the subsequent movement of the toothed groove 255 to the position of the toothed block 254. After the abutment plate 258 separates from the toothed block 254, the toothed block 254, under pressure, elastically deforms and embeds into the toothed groove 255. 5. The elastic plate 256 provides a restoring force to make the toothed block 254 and the toothed groove 255 mesh tightly, realizing the connection between the reinforcing rib 251 and the fixing plate 253; after the installation is completed, the space between the inner sheath 21 and the outer sheath 22 is filled with dry gas (such as nitrogen) through a special air filling device to form a slightly positive pressure environment. During the operation of the cable, if there is moisture or humidity in the external environment, due to the pressure difference between the inner sheath 21 and the outer sheath 22, the external moisture and humidity are difficult to penetrate into the cable through the gaps, thereby eliminating the risk of insulation moisture from the source and protecting the insulation layer and conductor structure 15 inside the cable; when When the cable is subjected to external compression or bending, the outer sheath 22 is stressed first. This pressure is transmitted to the fixing plate 253 through the reinforcing rib 251 integrally formed with the outer sheath 22. Under pressure, the snap-fit ​​protrusion 252 at the bottom of the reinforcing rib 251 pushes the telescopic rod 264 downward. The telescopic rod 264 is compressed and shortened, simultaneously causing the connecting sleeve 265 on its surface to move downward. During the downward movement of the connecting sleeve 265, the connecting rod 266, which is internally rotatably connected, pulls the two sliders 261 in the connecting plate 24 to slide towards each other in the sliding groove. When the sliders 261 slide, they compress the first spring 26 on the surface of the damping rod 262. 3. The second spring 267 on the surface of the telescopic rod 264, the deformation of the first spring 263 and the second spring 267 absorbs the impact energy, while the damping rod 262 provides motion damping, slows down the sliding speed of the slider 261, and thus slows down the transmission speed and force of the pressure of the outer sheath 22 to the cable body 1, avoiding the direct action of rigid stress on the cable body 1, protecting the internal structure of the cable from damage. When the external force disappears, under the elastic restoring force of the first spring 263 and the second spring 267, the slider 261, the connecting sleeve 265 and the telescopic rod 264 reset, and the outer sheath 22 also returns to its initial state.Under normal conditions, the dry gas between the inner sheath 21 and the outer sheath 22 maintains a set positive pressure, the elastic metal diaphragm 276 maintains its initial shape, and the contact block 273 and the microswitches 272 on both sides of the fixed post 271 maintain a safe distance. The alarm circuit is in the off state. When a gas pressure drop occurs (such as gas leakage due to damage to the outer sheath 22), the pressure difference between the inside and outside decreases, the elastic metal diaphragm 276 overcomes the internal gas pressure and deforms upward, pushing the pressure cap 275 upward. The pressure cap 275 drives the contact block 273 to move upward synchronously through the guide rod 274. When the contact block 273 moves to the position of the contact block 273, the pressure difference decreases. When the top microswitch 272 is engaged, it closes, triggering an alarm signal and transmitting it to an external alarm device, indicating a potential cable leak. In cases of abnormally high pressure (such as when the cable is subjected to severe compression), the pressure between the inner sheath 21 and the outer sheath 22 increases. The pressure cap 275 transmits this pressure to the elastic metal diaphragm 276, causing it to deform downwards. This deformation pushes the contact block 273 downwards via the guide rod 274. When the contact block 273 contacts the bottom microswitch 272, an overpressure alarm is triggered. The built-in warning structure transmits the alarm signal to the outside, alerting personnel to take timely action.

[0054] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An energy-saving copper alloy conductor power cable, comprising a cable body (1), characterized in that: The cable body (1) includes a shielding layer (11), a heat dissipation layer (12) is provided inside the shielding layer (11), a total insulation layer (13) is provided inside the heat dissipation layer (12), a plurality of sub-insulation layers (14) are provided inside the total insulation layer (13), and a conductor structure (15) is provided inside the sub-insulation layers (14). A pressure-bearing structure (2) is provided on the surface of the shielding layer (11). The pressure-bearing structure (2) includes an inner sheath (21) and an outer sheath (22). The inner sheath (21) is disposed on the surface of the shielding layer (11), and dry gas is filled between the inner sheath (21) and the outer sheath (22) to form a positive pressure environment. Several connecting rings (23) are sleeved on the top and bottom of the surface of the inner sheath (21). A connecting plate (24) is disposed between the several connecting rings (23). A snap-fit ​​component (25) is disposed on one side of the connecting plate (24), and the snap-fit ​​component (25) is connected to the outer sheath (22). A deformation adaptation component (26) is disposed between the snap-fit ​​component (25) and the connecting plate (24). Several pressure sensing components (27) are bolted to the side of the connecting plate (24) near the snap-fit ​​component (25). The deformation adaptation component (26) includes two sliders (261), which are slidably connected to the inside of the connecting plate (24). Damping rods (262) are bolted to opposite sides of both sliders (261), and the damping rods (262) are connected to the inner wall of the connecting plate (24) on the side closest to it. A first spring (263) is sleeved on the surface of the damping rod (262), and the first spring (263) is connected to both the slider (261) and the inner wall of the connecting plate (24) on the side closest to them respectively. The bottom of the snap-fit ​​component (25) snaps into place. There is a telescopic rod (264), and the bottom of the telescopic rod (264) is connected to the inner wall of the connecting plate (24). A connecting sleeve (265) is sleeved on the bottom of the surface of the telescopic rod (264), and a connecting rod (266) is rotatably connected to the front and rear sides inside the connecting sleeve (265). The other end of the connecting rod (266) is rotatably connected to the slider (261). A second spring (267) is sleeved on the surface of the telescopic rod (264), and the top and bottom of the second spring (267) are respectively connected to the connecting sleeve (265) and the inner wall of the connecting plate (24). The connecting plate (24) has a sliding groove inside, the slider (261) is inside the sliding groove, and the slider (261) has a limiting protrusion (3) on both sides, and the surface of the limiting protrusion (3) slides in contact with the inner wall of the connecting plate (24). The snap-fit ​​assembly (25) includes a reinforcing rib (251). The top of the reinforcing rib (251) is connected to the outer sheath (22) and is integrally formed with the outer sheath (22). The bottom of the reinforcing rib (251) is provided with a snap-fit ​​protrusion (252). A fixing plate (253) is sleeved on the surface of the snap-fit ​​protrusion (252). Both sides of the inside of the fixing plate (253) are provided with a plurality of toothed blocks (254). The snap-fit ​​protrusion (252) has a toothed block (254) on one side corresponding to the toothed block (254). The toothed groove (255) is used in conjunction with the toothed block (254). The toothed block (254) is located inside the toothed groove (255). An elastic plate (256) is provided on the side of the toothed block (254) near the inner wall of the fixed plate (253). A moving rod (257) is provided between several elastic plates (256). Both sides of the inside of the snap-fit ​​protrusion (252) are provided with abutment plates (258). The front end of the abutment plate (258) is fixedly connected to the snap-fit ​​protrusion (252), and the other end is a free end. The heat dissipation layer (12) includes a graphene braided tape (121), which is wrapped around the surface of the total insulation layer (13), and a number of heat dissipation fins (122) are distributed along the axial direction on the surface of the graphene braided tape (121). The surface of the total insulating layer (13) is provided with a number of recesses (6) in a ring shape, and a longitudinal heat dissipation channel is formed between the recesses (6) and the graphene braided tape (121).

2. The energy-saving copper alloy conductor power cable according to claim 1, characterized in that: The reinforcing rib (251) is T-shaped and distributed axially along the inner wall of the outer sheath (22). The front side of the inside of the fixing plate (253) is provided with a positioning protrusion, and the inner wall of the snap-fit ​​protrusion (252) is in contact with the positioning protrusion.

3. The energy-saving copper alloy conductor power cable according to claim 1, characterized in that: The fixed plate (253) has a relief groove (4) on the side corresponding to the elastic plate (256), and the moving rod (257) and the elastic plate (256) are both inside the relief groove (4). The front end of the elastic plate (256) is connected to the inner wall of the relief groove (4), and the other end is a movable end.

4. The energy-saving copper alloy conductor power cable according to claim 1, characterized in that: The pressure sensing component (27) includes a fixed post (271), which is bolted to one side near the connecting plate (24). Microswitches (272) are provided at the top and bottom of both sides inside the fixed post (271). A contact block (273) is slidably provided inside the fixed post (271). The contact block (273) works in conjunction with the microswitches (272). A guide rod (274) is bolted to one side of the contact block (273), and a pressure cap (275) is connected to the side of the guide rod (274) away from the contact block (273). An elastic metal diaphragm (276) is in contact with the side of the pressure cap (275) near the guide rod (274), and the edge of the elastic metal diaphragm (276) is connected to the inner wall of the fixed post (271). One end of the guide rod (274) slides through the interior of the elastic metal diaphragm (276).

5. The energy-saving copper alloy conductor power cable according to claim 4, characterized in that: The inner wall of the pressure cap (275) is provided with a number of flow channels (5) in a ring shape, and the flow channels (5) are arranged radially and extend from the center to the edge.

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