A composite double-insulated photovoltaic line with AC and DC

Abstract

The invention discloses an AC / DC composite double-insulated photovoltaic line, and relates to the technical field of photovoltaic cables. The outer ends of the AC core and the DC core are both sleeved with insulating heat-conducting sleeves, and the side ends of the insulating heat-conducting sleeves are equidistantly embedded with a plurality of speed-increasing heat-conducting strips. The outer ends of the insulating heat-conducting sleeves and the plurality of speed-increasing heat-conducting strips are sleeved with an inner ring protruding sleeve, and the outer end of the inner ring protruding sleeve is bonded with a matching outer row pipe, and the outer end of the matching outer row pipe is equidistantly clamped with a plurality of isolation protection strips, and the outer ends of the plurality of isolation protection strips are bonded with a closed compacting tube. The problem in the prior art that the AC / DC cables inside the cable cannot be coordinated, resulting in the inability to effectively balance the internal temperature when the single core is working, and elastic components are added to reduce the impact force and deformation degree on the inside when bent and impacted, thereby improving the stability of the cable operation and extending the service life of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cables, in particular to an AC / DC composite double-insulated photovoltaic line. Background Art

[0002] AC and DC photovoltaic cables are cables designed specifically for photovoltaic power generation systems. They can transmit electricity between photovoltaic modules and other equipment. DC photovoltaic cables are mainly used to connect the cables between photovoltaic modules and inverters, and are responsible for transmitting the DC power generated by solar panels. AC photovoltaic cables are mainly used to connect the cables between inverters and power grids or loads, and are responsible for transmitting the AC power converted by the inverter.

[0003] However, current AC / DC composite photovoltaic cables directly isolate and place the AC / DC cables, resulting in one group of single-core cables being in a high-temperature working state and the other group being in a low-temperature processing state when the single-core cables are working. In addition, no heat exchange components are provided, resulting in a large temperature difference inside the cable, affecting the internal environment of the cable and the service life of the cable. At the same time, because no elastic folding components are provided inside the cable and no elastic components are provided outside the cable, effective buffering cannot be performed when bent or impacted, affecting the stable operation of the cable. Summary of the invention

[0004] The present invention provides an AC / DC composite double-insulated photovoltaic line, which can effectively solve the problem proposed in the above background technology that the existing AC / DC composite photovoltaic cable directly isolates the AC / DC cables, resulting in one group of single-cores being in a high-temperature working state and the other group being in a low-temperature processing state when the cables are working, and no heat exchange component is provided, resulting in a large temperature difference inside the cable, affecting the internal environment of the cable and the service life of the cable. At the same time, because no elastic folding component is provided inside the cable and no elastic component is provided outside the cable, effective buffering cannot be performed when the cable is bent or impacted, affecting the stable operation and processing of the cable.

[0005] To achieve the above object, the present invention provides the following technical solution: an AC / DC composite double-insulated photovoltaic line, comprising an AC core, a DC core is arranged on one side of the AC core, and a combined switching component is arranged at the side end of the AC core;

[0006] The combined switching assembly includes an insulating heat-conducting sleeve;

[0007] The outer ends of the AC core and the DC core are both sleeved with insulating heat-conducting sleeves, and the side ends of the insulating heat-conducting sleeves are equidistantly embedded with a plurality of speed-increasing heat-conducting strips, and the outer ends of the insulating heat-conducting sleeves and the plurality of speed-increasing heat-conducting strips are sleeved with an inner ring protruding sleeve, and the outer ends of the inner ring protruding sleeves are bonded with a matching outer row pipe, and the outer ends of the matching outer row pipes are equidistantly clamped with a plurality of isolation protection strips, and the outer ends of the plurality of isolation protection strips are bonded with a closed tight tube, and the outer ends of the closed tight tubes are sleeved with an outer row elastic sleeve;

[0008] The top and bottom ends of the closed and compacted tube are both bonded with elastic support strips, and the side ends of the closed and compacted tube are fixed with special-shaped matching strips at positions corresponding to the elastic support strips, and the side ends of the plurality of elastic support strips and special-shaped matching strips are clamped with T-shaped three-way frames, and the inner side of the T-shaped three-way frame is sleeved with an internal support column, and a plurality of hollow telescopic plates are equidistantly fixed to the inner side of the T-shaped three-way frame, and the outer ends of the T-shaped three-way frame, the special-shaped matching strips and the elastic support strips are fixed with inner insulating sleeves;

[0009] Several outer shielding strips are equidistantly bonded to the outer end of the inner insulating sleeve, and several outer shielding strips are sleeved with load-bearing hard sleeves at their outer ends. An arc-shaped elastic recovery strip is bonded to the outer end of the load-bearing hard sleeve, and an elliptical elastic strip is symmetrically installed at one end of the arc-shaped elastic recovery strip. A reset arc strip is slidably connected between two of the elliptical elastic strips, and elastic extrusion sleeves are bonded to the outer ends of multiple reset arc strips. Bottom hole embedded strips are fixed at the positions of the arc-shaped elastic recovery strips at the outer end of the load-bearing hard sleeve corresponding to the reset arc strips at the inner end of the elastic extrusion sleeve corresponding to the reset arc strips. Several anti-puncture winding strips are wrapped around the outer end of the elastic extrusion sleeve, and thickened wear-resistant tubes are sleeved at the outer ends of several of the anti-puncture winding strips.

[0010] According to the above technical scheme, a number of locking springs are equidistantly connected to the side ends of the outer row of elastic sleeves, an exchange bonding plate is fixed to one end of the several locking springs, a heated airbag is symmetrically installed at one end of the outer row of elastic sleeves, one end of two heated airbags are bonded with T-shaped entry and exit strips, one end of the T-shaped entry and exit strips is bonded with a heat exchange strip, and the end of the heat exchange strip away from the T-shaped entry and exit strip is bonded with an isolation blocking strip, a number of lifting springs are fixed to the inside of the heated airbags, and a number of elastic compression chambers are equidistantly opened on the inside of the outer row of elastic sleeves.

[0011] According to the above technical solution, the side ends of the inner ring raised sleeve are respectively bonded to the matching outer row pipe, the isolation protection strip and the closed tight tube side ends, one end of the inner ring raised sleeve is slidably fitted with one end of the heated airbag, and the multiple T-shaped entry and exit strips, heat exchange strips and isolation blocking strips are slidably fitted with each other.

[0012] According to the above technical solution, one end of the T-shaped inlet and outlet strip, the heat exchange strip and the isolation barrier strip is slidably connected to one end of the inner ring raised sleeve, and both ends of the T-shaped inlet and outlet strip are slidably connected to one end of two closed and tightened tubes respectively.

[0013] According to the above technical solution, the exchange bonding plate is rotatably mounted on one end of the outer row of elastic sleeves, and one end of the exchange bonding plate is bonded to one end of the two outer row of elastic sleeves.

[0014] According to the above technical solution, the exchange laminating plate is rotatably embedded in the side end of the elastic support strip, and the hollow telescopic plate is adhesively connected to the elastic support strip.

[0015] According to the above technical solution, the adjacent arc-shaped elastic restoring strips are sleeved and connected with the reset arc-shaped strips, and the bottom hole embedding strips are placed on the side ends of the arc-shaped elastic restoring strips and the reset arc-shaped strips.

[0016] According to the above technical solution, a double protection component is provided at the outer end of the thickened wear-resistant pipe;

[0017] The double protection assembly includes an L-shaped combination block;

[0018] An L-shaped assembly block is symmetrically bonded to the outer end of the thickened wear-resistant tube, a bottom support arc plate is sleeved between multiple L-shaped assembly blocks, and a clamping support block is symmetrically welded to the side end of the bottom support arc plate. A clamping support hole is provided at one end of the L-shaped assembly block and the clamping support block, and a clamping pin is sleeved on the inner side of the clamping support hole. A number of bending grooves are equidistantly provided at the bottom of the side end of the bottom support arc plate, and a clamping closing block is symmetrically welded to the top of the L-shaped assembly block. A number of protective arc clamping plates are sleeved on the top of the plurality of clamping closing blocks, and a number of clamping closing grooves are equidistantly provided at the bottom end of the protective arc clamping plate, and a number of supporting anti-collision strips are bonded to the top of the outer end of the thickened wear-resistant tube.

[0019] According to the above technical solution, the clamping support block is sleeved on the inner side of the L-shaped combination block, the top of the side end of the bottom support arc plate is fitted with the bottom of the side end of the thickened wear-resistant tube, and the clamping closing block is sleeved on the inner side of the clamping closing groove.

[0020] According to the above technical solution, the bottom end of the protective arc clamp is fitted with the top end of the L-shaped combination block, and the outer end of the supporting anti-collision strip is fitted with the inner end of the protective arc clamp.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. A combined switching component is provided, which gradually conducts heat outward through an insulating heat-conducting sleeve, a speed-up heat-conducting strip, an inner ring protruding sleeve, a matching outer discharge pipe, an isolation protection strip and a closed tight tube, and gradually increases the heat dissipation area to accelerate the heat discharge speed. The inner ring protruding sleeve is used to conduct heat to the heated airbag, and the heated airbag and the lifting spring drive the T-shaped inlet and outlet strip to rise and fall, change the position between the two groups of heat exchange strips and the isolation barrier strips, and the T-shaped inlet and outlet strip pushes the exchange bonding plate to cooperate with the locking spring to realize the combined heat exchange of the two groups of outer discharge elastic sleeves. Multiple groups of heat exchange components cooperate with each other to realize that when a single group of internal cables is working, the cables that are not working can be converted into heat exchange components, thereby improving the efficiency of internal heat exchange and heat dissipation. The heat exchange state is changed according to the operation of the internal cables, and internal linkage heat exchange is realized to reduce the probability of abnormal deformation and heat damage of the cables due to temperature difference. In addition, multiple isolation stages are used to avoid mutual influence between AC and DC, balance the internal temperature, reduce the probability of cable damage, stabilize the internal environment of the cable, and extend the service life of the cable.

[0023] The interior is elastically supported by elastic support strips, special-shaped matching strips and T-shaped three-way frames, and the interior is squeezed and contracted by the hollow telescopic plate. The arc-shaped elastic strips, elliptical elastic strips and reset arc strips are mutually squeezed and deformed, and the arc-shaped elastic strips and reset arc strips are supported and restricted by the load-bearing hard sleeve and the elastic extrusion sleeve to achieve internal and external compression restriction at the same time. The elastic support is used to reduce the damage to the interior of the cable when it is bent and impacted, and the protection of the interior of the cable is improved. The inner insulating sleeve, outer shielding strip, anti-puncture winding strip and thickened wear-resistant tube are used to protect and support the outside, reduce the damage to the outside of the cable by external hard materials, and further improve the safety and stability of the cable;

[0024] Through the cooperation between the internal cores and the use of temperature to switch the internal heat exchange state, the elastic support components support and limit the inside and outside, and cooperate with the external hard protection to gradually protect the cable from the outside to the inside, which effectively solves the problem in the prior art that the AC and DC cables inside the cable cannot cooperate with each other, resulting in the inability to effectively balance the internal temperature when the single core is working. In addition, elastic components are added to reduce the impact force and deformation degree on the inside when bending and impacting, thereby improving the stability of the cable operation and extending the service life of the cable.

[0025] 2. A double protection component is provided, and the L-shaped combination block is bonded to the side end of the thickened wear-resistant pipe by an adhesive, and the clamping pin is used to clamp the clamping support block and the L-shaped combination block, and the bottom support arc plate is clamped to the bottom of the side end of the thickened wear-resistant pipe, and the clamping closing groove at the bottom end of the protective arc card plate is clamped and connected with the clamping closing block at the top of the L-shaped combination block, so as to realize the clamping connection between the L-shaped combination block and the protective arc card plate, and the bottom support arc plate and the protective arc card plate are used to perform different protections on the outer end of the thickened wear-resistant pipe, and the bottom support arc plate is used to support the bottom end to prevent the bottom end of the cable from directly contacting the soil and causing corrosion and damage to the cable surface, and the top side end is protected by the protective arc card plate, and the top end is buffered and supported in conjunction with the support anti-collision strip, so as to reduce the damage to the cable surface caused by impact, improve the safety of the cable during operation, and reduce the damage to the cable by ultraviolet rays by the top support buffering and sunshade protection, and reduce the corrosion damage to the cable by the soil by the bottom support restriction, thereby extending the service life of the cable.

[0026] In summary, by combining the switching components and the double protection components to cooperate with each other, through internal thermal conductivity balancing treatment, central elastic support, external elastic limitation and external double support protection, the damage to the cable due to overheating, pressure and impact can be reduced, and the corrosion and aging speed of the cable caused by the external environment can be reduced. Through the cooperation of multiple components, the working environment of the cable can be stabilized and the service life of the cable can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0028] In the attached picture:

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 is a schematic diagram of the structure of the combined switching assembly of the present invention;

[0031] Figure 3 It is a schematic diagram of the installation structure of the T-shaped inlet and outlet strip of the present invention;

[0032] Figure 4 It is a schematic diagram of the installation structure of the inner insulating sleeve of the present invention;

[0033] Figure 5 The present invention Figure 4 A magnified schematic diagram of the structure of A;

[0034] Figure 6 It is a schematic diagram of the installation structure of the elastic support strip of the present invention;

[0035] Figure 7It is a schematic diagram of the installation structure of the matching external discharge pipe of the present invention;

[0036] Figure 8 The present invention Figure 7 A magnified schematic diagram of the B structure;

[0037] Fig. 9 It is a schematic diagram of the installation structure of the heat exchange strip of the present invention;

[0038] Fig.10 It is a schematic structural diagram of the double protection assembly of the present invention;

[0039] Fig.11 It is a schematic diagram of the installation structure of the locking pin of the present invention;

[0040] Numbers in the figure: 1, AC core; 2, DC core;

[0041] 3. Combined switching assembly; 301. Insulated heat-conducting sleeve; 302. Speed-up heat-conducting strip; 303. Inner ring raised sleeve; 304. Matching outer row pipe; 305. Isolation protection strip; 306. Closed tight tube; 307. Outer row elastic sleeve; 308. Clamping spring; 309. Exchange laminating plate; 310. Heated airbag; 311. T-shaped inlet and outlet strip; 312. Heat exchange strip; 313. Isolation blocking strip; 314. Lifting spring; 315. Elastic Compression chamber; 316, elastic support strip; 317, special-shaped matching strip; 318, T-shaped three-way frame; 319, internal support column; 320, hollow telescopic plate; 321, inner insulating sleeve; 322, outer shielding strip; 323, load-bearing hard sleeve; 324, arc-shaped elastic strip; 325, elliptical elastic strip; 326, reset arc strip; 327, elastic extrusion sleeve; 328, bottom hole embedded strip; 329, anti-thorn winding strip; 330, thickened wear-resistant pipe;

[0042] 4. Double protection assembly; 401. L-shaped combination block; 402. Bottom support arc plate; 403. Snap-in support block; 404. Snap-in support hole; 405. Snap-in pin; 406. Bending groove; 407. Snap-in closing block; 408. Protective arc clamping plate; 409. Snap-in closing groove; 410. Support anti-collision strip. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0044] Example: Figure 1-11 As shown, the present invention provides a technical solution, an AC / DC composite double-insulated photovoltaic line, comprising an AC core 1, a DC core 2 is arranged on one side of the AC core 1, and a combined switching component 3 is arranged at the side end of the AC core 1;

[0045] The combined switching component 3 includes an insulating heat-conducting sleeve 301, a speed-up heat-conducting strip 302, an inner ring protruding sleeve 303, a matching outer row pipe 304, an isolation protection strip 305, a closed tight tube 306, an outer row elastic sleeve 307, a locking spring 308, an exchange bonding plate 309, a heated air bag 310, a T-shaped inlet and outlet strip 311, a heat exchange strip 312, an isolation blocking strip 313, a lifting spring 314, an elastic compression chamber 315, an elastic support strip 316, a special-shaped matching strip 317, a T-shaped three-way frame 318, an internal support column 319, a hollow telescopic plate 320, an inner insulating sleeve 321, an outer shielding strip 322, a load-bearing hard sleeve 323, an arc-shaped elastic recovery strip 324, an elliptical elastic strip 325, a reset arc strip 326, an elastic extrusion sleeve 327, a bottom hole embedding strip 328, an anti-puncture winding strip 329 and a thickened wear-resistant tube 330;

[0046] The outer ends of the AC core 1 and the DC core 2 are both sleeved with an insulating heat-conducting sleeve 301, and a plurality of speed-increasing heat-conducting strips 302 are equidistantly embedded and clamped at the side ends of the insulating heat-conducting sleeve 301. The outer ends of the insulating heat-conducting sleeve 301 and the plurality of speed-increasing heat-conducting strips 302 are sleeved with an inner ring protruding sleeve 303, and the side ends of the inner ring protruding sleeve 303 are respectively bonded and fitted with the side ends of the matching outer row pipe 304, the isolation protection strip 305 and the closed tight tube 306 to achieve steady support and fixation, and complete the overall fixed connection. The outer end of the inner ring protruding sleeve 303 is bonded with the matching outer row pipe 304, and the outer end of the matching outer row pipe 304 is equidistantly A plurality of isolation protection strips 305 are clamped, and a closed firming tube 306 is bonded to the outer end of the plurality of isolation protection strips 305. An outer row elastic sleeve 307 is sleeved on the outer end of the closed firming tube 306. One end of the inner ring raised sleeve 303 is slidably fitted with one end of the heated airbag 310 to achieve steady guiding support positioning and limit the moving direction of the outer row elastic sleeve 307. A plurality of clamping springs 308 are equidistantly clamped on the side end of the outer row elastic sleeve 307. An exchange fitting plate 309 is fixed to one end of the plurality of clamping springs 308. The exchange fitting plate 309 is rotatably installed on one end of the closed firming tube 306. One end of the plate 309 is fitted with one end of the two closed tight tubes 306, and the exchange fitting plate 309 is rotatably installed on one end of the outer elastic sleeve 307. One end of the exchange fitting plate 309 is fitted with one end of the two outer elastic sleeves 307. One end of the outer elastic sleeve 307 is symmetrically installed with a heated air bag 310. One end of the two heated air bags 310 is bonded with a T-shaped inlet and outlet strip 311. Multiple T-shaped inlet and outlet strips 311, heat exchange strips 312 and isolation blocking strips 313 are slidably fitted, and one end of the T-shaped inlet and outlet strips 311, heat exchange strips 312 and isolation blocking strips 313 is slidably connected with one end of the inner ring raised sleeve 303, so that The heat exchange process can be operated steadily, the heat exchange state can be switched according to the thermal environment, and the AC and DC cable isolation process can be realized. The two ends of the T-shaped inlet and outlet strip 311 are respectively slidably connected with one end of the two closed and compacted tubes 306 to realize the movement and transposition process of the T-shaped inlet and outlet strip 311. A heat exchange strip 312 is bonded to one end of the T-shaped inlet and outlet strip 311, and an isolation blocking strip 313 is bonded to the end of the heat exchange strip 312 away from the T-shaped inlet and outlet strip 311. A plurality of lifting springs 314 are fixed to the inner side of the heated airbag 310, and a plurality of elastic compression chambers 315 are equidistantly opened on the inner side of the outer row elastic sleeve 307.

[0047] The top and bottom ends of the closed and tightened tube 306 are both bonded with elastic support strips 316, and the exchange laminating plate 309 is rotatably embedded in the side end of the elastic support strip 316, so that it can be stably supported when rotating and fitting, and a special-shaped matching strip 317 is fixed at the side end of the closed and tightened tube 306 corresponding to the position of the elastic support strip 316, and the side ends of multiple elastic support strips 316 and special-shaped matching strips 317 are clamped with T-shaped three-way frames 318, and the inner side of the T-shaped three-way frame 318 is sleeved with internal support columns 319, and a number of hollow telescopic plates 320 are equidistantly fixed to the inner side of the T-shaped three-way frame 318, and the hollow telescopic plates 320 are bonded and connected to the elastic support strip 316, so that it can be elastically folded when the inner side is bent and contracted, and the outer ends of the T-shaped three-way frame 318, the special-shaped matching strip 317 and the elastic support strip 316 are fixed with inner insulating sleeves 321;

[0048] The outer end of the inner insulating sleeve 321 is bonded with a plurality of outer shielding strips 322 at equal intervals, and the outer ends of the plurality of outer shielding strips 322 are sleeved with a load-bearing hard sleeve 323, and the outer end of the load-bearing hard sleeve 323 is bonded with an arc-shaped elastic restoring strip 324, and an elliptical elastic strip 325 is symmetrically installed at one end of the arc-shaped elastic restoring strip 324, and a reset arc-shaped strip 326 is slidably connected between the two elliptical elastic strips 325, and the adjacent arc-shaped elastic restoring strips 324 are sleeved and connected with the reset arc-shaped strips 326, and the bottom hole embedding strip 328 is placed between the arc-shaped elastic restoring strip 324 and the reset arc-shaped strip 326. The side ends of the reset arc strips 326 achieve steady elastic support and ensure the stability of the elastic limit in multiple positions. The outer ends of the multiple reset arc strips 326 are bonded with elastic extrusion sleeves 327. The outer ends of the load-bearing hard sleeves 323 correspond to the arc-shaped elastic recovery strips 324, and the inner ends of the elastic extrusion sleeves 327 correspond to the reset arc strips 326. A bottom hole embedding strip 328 is fixed at the position. The outer end of the elastic extrusion sleeve 327 is wrapped with a number of anti-puncture wrapping strips 329, and the outer ends of the several anti-puncture wrapping strips 329 are sleeved with thickened wear-resistant tubes 330.

[0049] The outer end of the thickened wear-resistant pipe 330 is provided with a double protection component 4;

[0050] The double protection assembly 4 includes an L-shaped assembly block 401, a bottom support arc plate 402, a clamping support block 403, a clamping support hole 404, a clamping pin 405, a bending groove 406, a clamping closing block 407, a protective arc clamping plate 408, a clamping closing groove 409 and a supporting anti-collision strip 410;

[0051] The outer end of the thickened wear-resistant tube 330 is symmetrically bonded with an L-shaped assembly block 401, and a bottom support arc plate 402 is sleeved between the multiple L-shaped assembly blocks 401. The top of the side end of the bottom support arc plate 402 fits with the bottom of the side end of the thickened wear-resistant tube 330 to ensure the stable processing of the bottom protection support. The side end of the bottom support arc plate 402 is symmetrically welded with a clamping support block 403, and the clamping support block 403 is sleeved on the inner side of the L-shaped assembly block 401, so that it can be steadily connected and positioned when it is sleeved and clamped. A clamping support hole 404 is opened at one end of the L-shaped assembly block 401 and the clamping support block 403, and a clamping pin 405 is sleeved inside the clamping support hole 404. A plurality of equidistant bottoms are opened at the side end of the bottom support arc plate 402. A bending groove 406 is provided, and a snap-in closing block 407 is symmetrically welded on the top of the L-shaped combination block 401. A protective arc clamping plate 408 is sleeved on the top of the multiple snap-in closing blocks 407. The bottom end of the protective arc clamping plate 408 is fitted with the top of the L-shaped combination block 401 to achieve alignment and fit, thereby ensuring the stability of the support. A plurality of snap-in closing grooves 409 are equidistantly provided at the bottom end of the protective arc clamping plate 408. The snap-in closing blocks 407 are sleeved on the inner side of the snap-in closing grooves 409 to achieve steady snap-in limiting. A plurality of supporting anti-collision strips 410 are bonded to the top of the outer end of the thickened wear-resistant tube 330. The outer end of the supporting anti-collision strip 410 is fitted with the inner end of the protective arc clamping plate 408, thereby effectively positioning the support when bearing load.

[0052] The working principle and use process of the present invention are as follows: when the cable is laid in an environment directly in contact with the soil such as grass or mud, the L-shaped assembly block 401 is bonded to the side end of the thickened wear-resistant tube 330 by using an adhesive, the clamping support block 403 at the side end of the bottom support arc plate 402 is embedded into the inner side end of the L-shaped assembly block 401, the clamping pin 405 is embedded into the inner side of the clamping support hole 404, and the clamping support block 403 and the L-shaped assembly block 401 are clamped and positioned by using the clamping pin 405, so that the bottom support arc plate 402 is clamped to the bottom of the side end of the thickened wear-resistant tube 330. After the clamping is completed, the clamping closed groove 409 at the bottom end of the protective arc clamping plate 408 is aligned with the L-shaped The clamping closure block 407 at the top of the assembly block 401 is aligned, and the clamping closure block 407 is embedded into the inner side of the clamping closure groove 409, so that the L-shaped assembly block 401 is clamped and connected with the protective arc clamp plate 408, and the bottom support arc plate 402 and the protective arc clamp plate 408 are used to provide different protections for the outer end of the thickened wear-resistant tube 330, and the bottom support arc plate 402 is used to support the bottom end to prevent the bottom end of the cable from directly contacting the soil and causing the cable surface to be corroded and damaged, and the top side end is protected by the protective arc clamp plate 408, and the top end is supported and limited by the support anti-collision strip 410, so as to reduce the damage to the cable surface caused by impact and improve the safety of the cable during operation;

[0053] When the cable is running, AC and DC are transmitted through the AC core 1 and the DC core 2. During the transmission process, the insulating heat-conducting sleeve 301 is used to insulate the AC core 1 and the DC core 2, and the heat in the conductive process of the core is discharged to stabilize the resistance of the internal core, thereby avoiding the vicious cycle of continuous temperature rise caused by continuous conduction leading to internal heat rise, and internal heat rise leading to increased resistance value. The heat is transferred to the position of the inner ring protruding sleeve 303 through the insulating heat-conducting sleeve 301 and the speed-up heat-conducting strip 302, and then to the outer matching outer exhaust pipe 303 through the inner ring protruding sleeve 303. 04. The heat is conducted at the positions of the isolation protection strip 305, the closed tight tube 306 and the outer elastic sleeve 307, and the heat is gradually discharged. In the process of the discharge, the heat dissipation area is gradually increased to improve the heat dissipation speed. The heat at the position of the inner ring protrusion sleeve 303 is introduced into the position of the outer elastic sleeve 307 by contact heat exchange. When a single group of wire cores is working, the hot air in the outer elastic sleeve 307 is expanded to push the heated air bag 310 to move along the outer elastic sleeve 307, and the fitting position of the two groups of T-shaped inlet and outlet strips 311 and the heat exchange strip 312 is changed to increase the heat exchange area and transfer the heat to the other group that is not working. The heat exchange area is further increased and the stability of the internal operation is improved. When both groups of cores are working, the heat of the two groups of cores is introduced to the positions of the two groups of heated air bags 310 by using the two groups of inner ring raised sleeves 303. The two groups of heated air bags 310 are used to drive the T-shaped inlet and outlet strips 311, the heat exchange strips 312 and the isolation blocking strips 313 to slide, and the side ends of the two isolation blocking strips 313 are fitted with the inner ring raised sleeves 303. The isolation blocking strips 313 are used to isolate the heat conduction of the AC core 1 and the DC core 2. When the two groups of isolation blocking strips 313 are fitted, the T-shaped inlet and outlet strips 311 promote the exchange fitting. The plate 309 rotates upward, and cooperates with the locking spring 308 to drive the exchange laminating plate 309 to rotate and reset, and switches the combination state of the exchange laminating plate 309 and the side end of the outer row elastic sleeve 307 to achieve heat exchange isolation of the two groups of cores, reduce the impact between the two groups of cores, and ensure internal stable operation. The lifting spring 314 is used to drive the heated airbag 310 to reset and cooperate with the heat to expand the air, so as to achieve the expansion and contraction of the heated airbag 310, the T-shaped inlet and outlet strip 311, the heat exchange strip 312 and the isolation blocking strip 313, improve the heat exchange stability, and switch the heat exchange state and the isolation state according to the working state to improve the stability of the core operation;

[0054] The elastic compression cavity 315 is used to elastically support the outer elastic sleeve 307, so that the cable can be steadily folded and replaced when it is bent, and a steady support process is achieved. The elastic support strip 316 and the special-shaped matching strip 317 are used to support and integrate multiple groups of wire cores to achieve internal elastic support, ensure the reset stability of the wire core and the straightness of the cable when it is laid. The T-shaped three-way frame 318 is used to isolate the multiple groups of wire cores with different functions inside, and the internal support column 319 is used to support and limit the center point to avoid the cable from collapsing inward during the placement process, thereby improving the stability of the overall support. At the same time, when the cable is bent, the internal hollow expansion plate 320 is used to perform elastic compression and deformation buffering to improve the stability of the overall support, avoid excessive extrusion inside, and achieve internal multi-core fixed processing;

[0055] The inner insulating sleeve 321 is used to insulate the multiple groups of internal cores, and the interior is fixed and limited. The outer shielding strip 322 is used to isolate the inside and the outside to prevent external electromagnetic equipment from interfering with the normal operation of the cable. The load-bearing hard sleeve 323 is used to provide hard support to the outside to reduce the occurrence of large deformation inside due to external elastic impact. When the cable is impacted by external force, the external pressure pushes the thickened wear-resistant tube 330, and the thickened wear-resistant tube 330 is used to squeeze inward. At this time, the thickened wear-resistant tube 330 pushes the anti-puncture winding strip 329 and the elastic extrusion sleeve 327 to Internal extrusion, at this time, the arc-shaped elastic strip 324 and the reset arc-shaped strip 326 are squeezed and expanded along the elliptical elastic strip 325, and the internal load-bearing hard sleeve 323 is used to support and limit the arc-shaped elastic strip 324. At this time, the bottom hole embedding strip 328 moves synchronously, and the desiccant on the inside of the bottom hole embedding strip 328 is used to dry the arc-shaped elastic strip 324 and the reset arc-shaped strip 326 to ensure the stability of the arc-shaped elastic strip 324 and the reset arc-shaped strip 326, avoid internal damage and collapse due to moisture and rust, and improve the stability of the internal elastic support.

[0056] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An AC / DC composite double-insulated photovoltaic line, comprising an AC line core (1), characterized in that: A DC core (2) is provided on one side of the AC core (1), and a combined switching component (3) is provided on the side end of the AC core (1); The combined switching component (3) comprises an insulating heat-conducting sleeve (301); The outer ends of the AC line core (1) and the DC line core (2) are both sleeved with an insulating heat-conducting sleeve (301), and a plurality of speed-increasing heat-conducting strips (302) are equidistantly embedded and clamped into the side ends of the insulating heat-conducting sleeve (301), and the outer ends of the insulating heat-conducting sleeve (301) and the plurality of speed-increasing heat-conducting strips (302) are sleeved with an inner ring protruding sleeve (303), and the outer ends of the inner ring protruding sleeve (303) are bonded with a matching outer row pipe (304), and the outer ends of the matching outer row pipe (304) are clamped with a plurality of isolation protection strips (305) at equal intervals, and the outer ends of the plurality of isolation protection strips (305) are bonded with a closed tight tube (306), and the outer ends of the closed tight tube (306) are sleeved with an outer row elastic sleeve (307); The top and bottom ends of the closed and compacted tube (306) are both bonded with elastic support strips (316); a special-shaped matching strip (317) is fixed at the side end of the closed and compacted tube (306) at a position corresponding to the elastic support strip (316); a plurality of the elastic support strips (316) and the special-shaped matching strips (317) are clamped with a T-shaped three-way frame (318) at the side ends; an internal support column (319) is sleeved on the inner side of the T-shaped three-way frame (318); a plurality of hollow telescopic plates (320) are equidistantly fixed on the inner side of the T-shaped three-way frame (318); and an inner insulating sleeve (321) is fixed to the outer ends of the T-shaped three-way frame (318), the special-shaped matching strip (317) and the elastic support strip (316); The outer end of the inner insulating sleeve (321) is bonded with a plurality of outer shielding strips (322) at equal intervals, the outer ends of the plurality of outer shielding strips (322) are sleeved with a load-bearing hard sleeve (323), the outer end of the load-bearing hard sleeve (323) is bonded with an arc-shaped elastic recovery strip (324), one end of the arc-shaped elastic recovery strip (324) is symmetrically mounted with an elliptical elastic strip (325), a reset arc-shaped strip (326) is slidably connected between two of the elliptical elastic strips (325), and the plurality of the elastic recovery strips (324) are connected to each other. An elastic extrusion sleeve (327) is bonded to the outer end of the arc strip (326); a bottom hole embedding strip (328) is fixed at the outer end of the load-bearing hard sleeve (323) corresponding to the arc spring strip (324) and the inner end of the elastic extrusion sleeve (327) corresponding to the reset arc strip (326); a plurality of puncture-proof wrapping strips (329) are wrapped around the outer end of the elastic extrusion sleeve (327); and a thickened wear-resistant tube (330) is sleeved on the outer ends of the plurality of puncture-proof wrapping strips (329).

2. The AC / DC composite double-insulated photovoltaic line according to claim 1, characterized in that: A plurality of locking springs (308) are equidistantly clamped to the side end of the outer elastic sleeve (307); an exchange bonding plate (309) is fixed to one end of the plurality of locking springs (308); a heated airbag (310) is symmetrically mounted to one end of the outer elastic sleeve (307); a T-shaped entry and exit strip (311) is bonded to one end of two heated airbags (310); a heat exchange strip (312) is bonded to one end of the T-shaped entry and exit strip (311); an isolation blocking strip (313) is bonded to one end of the heat exchange strip (312) away from the T-shaped entry and exit strip (311); a plurality of lifting springs (314) are fixed to the inner side of the heated airbag (310); and a plurality of elastic compression chambers (315) are equidistantly provided on the inner side of the outer elastic sleeve (307).

3. The AC / DC composite double-insulated photovoltaic line according to claim 2, characterized in that: The side ends of the inner ring raised sleeve (303) are respectively bonded to the side ends of the outer row pipe (304), the isolation protection strip (305) and the closed tight tube (306); one end of the inner ring raised sleeve (303) is slidably fitted to one end of the heated airbag (310); and the plurality of T-shaped inlet and outlet strips (311), the heat exchange strips (312) and the isolation blocking strips (313) are slidably fitted to each other.

4. The AC / DC composite double-insulated photovoltaic line according to claim 2, characterized in that: One end of the T-shaped inlet and outlet strip (311), the heat exchange strip (312) and the isolation blocking strip (313) is slidably connected to one end of the inner ring protruding sleeve (303), and both ends of the T-shaped inlet and outlet strip (311) are slidably connected to one end of two closed and compacted tubes (306).

5. The AC / DC composite double-insulated photovoltaic line according to claim 2, characterized in that: The exchange laminating plate (309) is rotatably mounted on one end of the outer row of elastic sleeves (307), and one end of the exchange laminating plate (309) is in contact with one end of the two outer row of elastic sleeves (307).

6. The AC / DC composite double-insulated photovoltaic line according to claim 2, characterized in that: The exchange laminating plate (309) is rotatably embedded in the side end of the elastic support strip (316), and the hollow telescopic plate (320) is adhesively connected to the elastic support strip (316).

7. The AC / DC composite double-insulated photovoltaic line according to claim 1, characterized in that: The adjacent arc-shaped elastic recovery strips (324) are sleeved and connected with the reset arc-shaped strips (326), and the bottom hole embedding strip (328) is placed on the side ends of the arc-shaped elastic recovery strips (324) and the reset arc-shaped strips (326).

8. The AC / DC composite double-insulated photovoltaic line according to claim 1, characterized in that: The outer end of the thickened wear-resistant pipe (330) is provided with a double protection component (4); The double protection assembly (4) comprises an L-shaped assembly block (401); An L-shaped assembly block (401) is symmetrically bonded to the outer end of the thickened wear-resistant tube (330), a bottom support arc plate (402) is sleeved between the plurality of L-shaped assembly blocks (401), a clamping support block (403) is symmetrically welded to the side end of the bottom support arc plate (402), a clamping support hole (404) is provided at one end of each of the L-shaped assembly block (401) and the clamping support block (403), a clamping pin (405) is sleeved inside the clamping support hole (404), and the bottom support arc plate (402) is symmetrically welded to the side end of the bottom support arc plate (402). The bottom of the side end of the bottom support arc plate (402) is equidistantly provided with a plurality of bending grooves (406); the top of the L-shaped assembly block (401) is symmetrically welded with a clamping closure block (407); the tops of the plurality of clamping closure blocks (407) are sleeved with a protective arc clamping plate (408); the bottom of the protective arc clamping plate (408) is equidistantly provided with a plurality of clamping closure grooves (409); and the top of the outer end of the thickened wear-resistant tube (330) is bonded with a plurality of supporting anti-collision strips (410).

9. The AC / DC composite double-insulated photovoltaic line according to claim 8, characterized in that: The clamping support block (403) is sleeved on the inner side of the L-shaped assembly block (401), the top of the side end of the bottom support arc plate (402) is in contact with the bottom of the side end of the thickened wear-resistant tube (330), and the clamping closing block (407) is sleeved on the inner side of the clamping closing groove (409).

10. The AC / DC composite double-insulated photovoltaic line according to claim 8, characterized in that: The bottom end of the protective arc clamping plate (408) is fitted with the top end of the L-shaped assembly block (401), and the outer end of the supporting anti-collision strip (410) is fitted with the inner end of the protective arc clamping plate (408).

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