A low-voltage power cable resistant to ultraviolet aging

Abstract

The present invention discloses a low-voltage power cable resistant to ultraviolet aging, which relates to the technical field of cables, including a fixed wire core, the fixed wire core is provided with a buffer processing component, the buffer processing component includes an inner limiting insulating sleeve, the outer side of the fixed wire core is sleeved with the inner limiting insulating sleeve, the outer end of the inner limiting insulating sleeve is equidistantly provided with a plurality of snap-in connection grooves, the outer end of the inner limiting insulating sleeve is equidistantly snap-connected with a plurality of heat exchange integration frames, the outer end of the inner limiting insulating sleeve and one end of the inner side of the heat exchange integration frame are paved with a raised snap-in frame, the present invention effectively solves the problem of high-temperature aging caused by uneven heat generation and poor thermal conductivity efficiency inside the cable in the prior art, and reduces the different internal deformations caused by different thermal expansion and contraction at different positions by heat uniformity, and cooperates with elastic expansion and contraction and elastic support to further reduce the problem of dislocation damage inside the cable, thereby effectively improving the stability of cable operation and the service life of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, in particular to a low-voltage power cable resistant to ultraviolet aging. Background Art

[0002] Cables are conductors covered with insulation layers, protective layers, shielding layers, etc., used to transmit electricity or signal currents and signal voltages. According to voltage, they can be divided into high-voltage cables and low-voltage cables. Although low-voltage cable lines are more expensive and more difficult to lay and maintain than low-voltage overhead lines and low-voltage overhead insulated lines, they have the characteristics of reliable operation, no need for poles, no ground occupation, no obstruction of sight, and less affected by the outside world.

[0003] However, when the cable is in operation, the cable core will generate heat, and the internal heat of the cable core is different, resulting in different thermal expansion and contraction between different positions. The different internal deformation will cause misalignment and damage inside the cable. In addition, during the use of the cable, due to uneven heating and continuous high temperature inside, the aging of internal components is accelerated, which greatly affects the service life of the cable. Summary of the Invention

[0004] The present invention provides a low-voltage power cable that is resistant to ultraviolet aging, which can effectively solve the problem raised in the above background technology that when the cable is in operation, the cable core generates heat, and the internal heat generation of the cable core is different, resulting in different thermal expansion and contraction between different positions. The different internal deformations may cause dislocation and damage inside the cable, and during the use of the cable, due to uneven heating and continuous high temperature inside, the aging of internal components is accelerated, which greatly affects the service life of the cable.

[0005] To achieve the above object, the present invention provides the following technical solution: a low-voltage power cable resistant to ultraviolet aging, comprising a fixed core provided with a buffer processing assembly;

[0006] The buffer processing assembly includes an inner limiting insulating sleeve;

[0007] The outer side of the fixed wire core is sleeved with an inner limiting insulating sleeve, the outer end of the inner limiting insulating sleeve is provided with a plurality of engaging connecting grooves at equal intervals, and the outer end of the inner limiting insulating sleeve is clamped with a plurality of heat exchange integration frames at equal intervals;

[0008] A raised snap-fit ​​frame is laid on the outer end of the inner limiting insulation sleeve and one end of the inner side of the heat exchange integration frame. A plurality of contact heat exchange plates are equidistantly sleeved on the side end of the raised snap-fit ​​frame. A plurality of support exchange plates are symmetrically bonded to the inner side of the heat exchange integration frame.

[0009] A bonding assembly strip is bonded to the middle of the outer end of the heat exchange integrated frame, and a Z-shaped telescopic plate is bonded to the outer end of the bonding assembly strip. A plurality of telescopic fixing holes are equidistantly opened at one end of the Z-shaped telescopic plate, and a plurality of connecting reinforcement ribs are equidistantly embedded and installed at one end of the Z-shaped telescopic plate.

[0010] The outer ends of the multiple Z-shaped telescopic plates are sleeved with a closed buffer sleeve, one end of the closed buffer sleeve is equidistantly provided with a plurality of telescopic processing holes, and the outer end of the closed buffer sleeve is equidistantly provided with a plurality of inner shielding strips.

[0011] According to the above technical solution, the bottom of the side end of the heat exchange integration frame is inserted into the inner side of the locking connection groove, the side end of the contact heat exchange plate is fitted with the side end of the heat exchange integration frame, and the side end of the support exchange plate is fitted with the side end of the contact heat exchange plate.

[0012] According to the above technical solution, the longitudinal sections of the heat exchange integration frame, the contact heat exchange plates and the support exchange plates are all arc-shaped, and the longitudinal section of the raised engagement frame is T-shaped.

[0013] According to the above technical solution, the inner end of the Z-shaped expansion and contraction plate is fitted with the outer ends of the plurality of contact heat exchange plates, and two adjacent Z-shaped expansion and contraction plates are connected by sliding and sheathing.

[0014] According to the above technical solution, the outer ends of the plurality of inner shielding strips are sleeved with a raised sliding frame, one end of the raised sliding frame is bonded with an outer guide limit plate, one end of the raised sliding frame is slidably connected with an integrated connecting strip, an inner limit groove column is welded between the plurality of integrated connecting strips, the side ends of the raised sliding frame and the outer guide limit plate are bonded with a buffer integrated sleeve, a plurality of filling mounting blocks are equidistantly installed on the side ends of the inner limit groove column, and a plurality of circulation air holes are equidistantly opened on the side ends of the filling mounting blocks;

[0015] A plurality of outer shielding strips are evenly laid on the outer side of the filling installation block, and outer heat insulation sheets are evenly bonded to the side ends of the plurality of outer shielding strips, and integrated insulating sleeves are installed on the side ends of the plurality of outer heat insulation sheets.

[0016] According to the above technical solution, the outer diameter of the Z-shaped telescopic plate is equal to the inner diameter of the closed buffer sleeve, and the side end of the raised sliding frame is slidably fitted with the side end of the inner limiting groove column.

[0017] According to the above technical solution, the side end of the buffer integration sleeve is in contact with the side end of the filling installation block, and the side end of the buffer integration sleeve is in contact with the side end of the inner limit groove column.

[0018] According to the above technical solution, an isolation component is provided at the outer end of the integrated insulating sleeve;

[0019] The isolation assembly includes a position-limiting thermal insulation pad;

[0020] The outer end of the integrated insulation sleeve is equidistantly bonded with a plurality of limiting heat insulation pads, the outer end of the limiting heat insulation pad is bonded with an outer reflective strip, the outer end of the integrated insulation sleeve is symmetrically bonded with a double-sided anti-slip strip, and the side ends of two of the double-sided anti-slip strips are bonded with a special-shaped integrated plate;

[0021] The side ends of the special-shaped integrated plates are installed with telescopic isolation strips, and the inner ends of the telescopic isolation strips are evenly installed with several arc-shaped thermal insulation pads. Fitting thermal insulation pads are laid at the positions of the integrated insulation sleeves corresponding to the side ends of the two special-shaped integrated plates.

[0022] According to the above technical solution, the longitudinal section of the special-shaped integrated plate is L-shaped, and the inner end of the fitted thermal insulation pad fits with the outer end of the integrated insulating sleeve.

[0023] According to the above technical solution, the longitudinal section of the double-sided anti-slip strip is arc-shaped, and the inner diameter of the position-limiting thermal insulation pad is equal to the outer diameter of the integrated insulating sleeve.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. A buffer processing component is provided to generate heat by fixing the wire core. The heat is then conducted outward along the inner limit insulating sleeve, the heat exchange integration frame, the contact heat exchange plate and the raised snap-fit ​​frame. In addition, through a multi-section connection combination, multiple heat exchange positions are connected in series to evenly distribute the heat to various positions, achieving thermal balance. At the same time, with the help of heat conduction, the heat dissipation area is increased, and heat transfer from the inside to the outside is achieved, achieving rapid internal cooling. The internal and external temperatures are the same, reducing the rapid aging of some areas of the cable due to uneven heating and local high temperatures.

[0026] By sliding and displacing the Z-shaped expansion and contraction plates against each other, deformation dislocation is achieved. The expansion and contraction fixing holes and the expansion and contraction processing holes provide buffer support for the Z-shaped expansion and contraction plates and the closed buffer sleeve. The connection reinforcement ribs are used to elastically press the interior to achieve internal elastic support limitation. The raised sliding frame and the outer guide limit plate are combined with the integrated connecting strip and the inner limit groove column for sliding displacement. The buffer integrated sleeve is used for buffering and pressing. The multi-stage expansion and contraction combination and the fine-tuning components are used to achieve internal overall buffering support. This reduces the internal dislocation of the cable caused by thermal expansion and contraction due to temperature, thereby improving the stability of the internal structure of the cable. At the same time, it can provide steady buffering when subject to external extrusion restrictions and the cable's own bending and extrusion. This improves the internal tightness of the cable while achieving steady protection.

[0027] Through the coordination of multiple internal heat exchanges, heat is conducted from the inside to the outside, and internal self-circulating heat conduction is achieved to achieve thermal balance and heat dissipation treatment. Through multiple sets of elastic limits and elastic extrusion, internal overall buffer support is achieved, thereby effectively solving the problem of high-temperature aging caused by uneven heat production and poor thermal conductivity efficiency inside the cable in the existing technology. The different internal deformations caused by different thermal expansion and contraction at different positions are reduced by heat uniformity. Combined with elastic expansion and contraction and elastic support, the situation of misalignment and damage inside the cable is further reduced, thereby effectively improving the stability of cable operation and the service life of the cable.

[0028] 2. An isolation component is provided, and the double-sided anti-slip strip is bonded to the side end of the integrated insulation sleeve, the curved thermal insulation pad is bonded to the inner side of the special-shaped integrated board, and the fitted thermal insulation pad is bonded between the two special-shaped integrated boards. The special-shaped integrated board, the telescopic isolation strip, the curved thermal insulation pad and the fitted thermal insulation pad are simultaneously fixed to the outer end of the integrated insulation sleeve to achieve protection treatment at the bend;

[0029] By bending the cable, the fitted thermal insulation pad and the curved thermal insulation pad are elastically bent and deformed simultaneously. At this time, the telescopic isolation strip near the inside of the bend is pressed inward, and the telescopic isolation strip near the outside of the bend is stretched outward. Through elastic deformation, stable protection of the cable bend is achieved, and the straight strips are isolated in conjunction with the external reflective strips. The integrated insulating sleeve is insulated in conjunction with the curved thermal insulation pad, the fitted thermal insulation pad and the limiting thermal insulation pad. The external thermal insulation limiting and isolation treatment is used to achieve cable anti-ultraviolet treatment, while reducing the occurrence of accelerated aging of the external insulation layer due to thermal expansion and contraction, thereby reducing the aging rate of the cable and increasing its service life.

[0030] To sum up, by cooperating with each other, the buffering treatment components and the isolation components, utilizing the internal heat uniformity and internal elastic buffering treatment, cooperating with the external heat insulation treatment and the external anti-ultraviolet treatment, the internal and external anti-aging treatment can be achieved simultaneously, which reduces the aging speed of the cable operation, improves the stability of the cable operation, and extends the operating life of the cable. Through the cooperation of multiple components, the cable operation protection is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] In the attached figure:

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 is a schematic structural diagram of the buffer processing assembly of the present invention;

[0035] Figure 3Schematic diagram of the installation structure of the Z-shaped telescopic plate of the present invention;

[0036] Figure 4 It is a schematic diagram of the installation structure of the snap-fit ​​connection groove of the present invention;

[0037] Figure 5 Schematic diagram of the installation structure of the inner shielding strip of the present invention;

[0038] Figure 6 It is a schematic diagram of the installation structure of the raised sliding frame of the present invention;

[0039] Figure 7 is a schematic structural diagram of the isolation assembly of the present invention;

[0040] Figure 8 Schematic diagram of the installation structure of the position-limiting thermal insulation pad of the present invention;

[0041] Figure 9 This is a schematic diagram of the installation structure of the double-sided anti-slip strip of the present invention;

[0042] Numbers in the figure: 1, fixed wire core;

[0043] 2. Buffering treatment assembly; 201. Inner limiting insulating sleeve; 202. Snap-fit ​​connection groove; 203. Heat exchange integration frame; 204. Raised snap-fit ​​frame; 205. Contact heat exchange plate; 206. Support exchange plate; 207. Adhesive assembly strip; 208. Z-shaped telescopic plate; 209. Telescopic fixing hole; 210. Connecting reinforcement rib; 211. Closed buffer sleeve; 212. Telescopic treatment hole; 213. Inner shielding strip; 214. Raised sliding frame; 215. Outer guide limiting plate; 216. Integrated connection strip; 217. Inner limiting groove column; 218. Filling mounting block; 219. Circulating air hole; 220. Outer shielding strip; 221. Outer thermal insulation sheet; 222. Integrated insulating sleeve; 223. Buffering integration sleeve;

[0044] 3. Isolation component; 301. Position-limiting thermal insulation pad; 302. External reflective strip; 303. Double-sided anti-slip strip; 304. Special-shaped integration board; 305. Telescopic isolation strip; 306. Curved thermal insulation pad; 307. Laminating thermal insulation pad. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described below with reference to 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.

[0046] Example: Figure 1-9 As shown, the present invention provides a technical solution, a low-voltage power cable resistant to ultraviolet aging, comprising a fixed core 1, the fixed core 1 being provided with a buffer processing component 2;

[0047] The buffer processing assembly 2 includes an inner limiting insulating sleeve 201, a snap-fit ​​connection groove 202, a heat exchange integration frame 203, a raised snap-fit ​​frame 204, a contact heat exchange plate 205, a support exchange plate 206, an adhesive assembly strip 207, a Z-shaped telescopic plate 208, a telescopic fixing hole 209, a connecting reinforcement rib 210, a closed buffer sleeve 211, a telescopic processing hole 212, an inner shielding strip 213, a raised sliding frame 214, an outer guide limiting plate 215, an integrated connecting strip 216, an inner limiting groove column 217, a filling mounting block 218, a circulating air hole 219, an outer shielding strip 220, an outer thermal insulation sheet 221, an integrated insulating sleeve 222, and a buffer integration sleeve 223.

[0048] The outer side of the fixed core 1 is sleeved with an inner limiting insulating sleeve 201, and a plurality of snap-fit ​​connection grooves 202 are equidistantly provided at the outer end of the inner limiting insulating sleeve 201. A plurality of heat exchange integration frames 203 are equidistantly snap-fitted at the outer end of the inner limiting insulating sleeve 201. A raised snap-fit ​​frame 204 is laid on the outer end of the inner limiting insulating sleeve 201 and one end of the inner side of the heat exchange integration frame 203. A plurality of contact heat exchange plates 205 are equidistantly sleeved on the side end of the raised snap-fit ​​frame 204. The bottom of the side end of the heat exchange integration frame 203 is inserted into the inner side of the snap-fit ​​connection groove 202, and the side end of the contact heat exchange plate 205 is connected to the heat exchange integration frame 203. The side ends are fitted together, and the side ends of the support exchange plate 206 are fitted together with the side ends of the contact heat exchange plate 205, realizing multi-stage steady heat exchange processing, and the multiple sections can be connected in coordination with each other to realize internal and external heat exchange and uniform internal heat treatment, thereby improving the stability of the internal environment. Several support exchange plates 206 are symmetrically bonded to the inner side of the heat exchange integration frame 203. The longitudinal sections of the heat exchange integration frame 203, the contact heat exchange plate 205 and the support exchange plate 206 are all arc-shaped, and the longitudinal section of the raised engaging frame 204 is T-shaped, realizing fitting limit and support positioning, thereby ensuring the stability of the internal structure;

[0049] The middle of the outer end of the heat exchange integration frame 203 is bonded with a bonding assembly strip 207, and the outer end of the bonding assembly strip 207 is bonded with a Z-shaped expansion plate 208. One end of the Z-shaped expansion plate 208 is equidistantly provided with a plurality of expansion fixing holes 209. One end of the Z-shaped expansion plate 208 is equidistantly embedded with a plurality of connecting reinforcement ribs 210. The outer ends of the multiple Z-shaped expansion plates 208 are sleeved with a closed buffer sleeve 211. The inner ends of the Z-shaped expansion plates 208 are fitted with the outer ends of multiple contact heat exchange plates 205. The adjacent two The Z-shaped expansion plates 208 are slidably connected to each other. The outer diameter of the Z-shaped expansion plate 208 is equal to the inner diameter of the closed buffer sleeve 211, realizing internal elastic buffering, so that the internal environment can be effectively expanded and contracted when the cable is bent, ensuring overall tightness, while avoiding internal separation of the cable, which affects thermal balance and thermal cycle processing. A plurality of expansion holes 212 are equidistantly opened at one end of the closed buffer sleeve 211, and a plurality of inner shielding strips 213 are equidistantly laid at the outer end of the closed buffer sleeve 211;

[0050] The outer ends of multiple inner shielding strips 213 are sleeved with a raised sliding frame 214, one end of the raised sliding frame 214 is bonded with an outer guide limit plate 215, one end of the raised sliding frame 214 is slidably connected with an integrated connecting strip 216, and an inner limit groove column 217 is welded between the multiple integrated connecting strips 216. The side ends of the raised sliding frame 214 and the outer guide limit plate 215 are bonded with a buffer integration sleeve 223, the side end of the raised sliding frame 214 is slidably fitted with the side end of the inner limit groove column 217, the side end of the buffer integration sleeve 223 is fitted with the side end of the filling mounting block 218, and the side end of the buffer integration sleeve 223 is fitted with the side end of the inner limit groove column 217, so as to achieve steady restriction of different equipment at different internal positions, and achieve fitting buffering and connection buffering. A number of filling mounting blocks 218 are equidistantly installed on the side end of the inner limit groove column 217, and a number of circulation air holes 219 are equidistantly opened on the side end of the filling mounting block 218;

[0051] Several outer shielding strips 220 are evenly laid on the outer end of the filling installation block 218 , and outer heat insulation sheets 221 are evenly bonded to the side ends of the multiple outer shielding strips 220 , and integrated insulating sleeves 222 are installed on the side ends of the multiple outer heat insulation sheets 221 .

[0052] An isolation component 3 is provided at the outer end of the integrated insulating sleeve 222;

[0053] The isolation assembly 3 includes a position-limiting thermal insulation pad 301, an outer reflective strip 302, a double-sided anti-slip strip 303, a special-shaped integration plate 304, a telescopic isolation strip 305, a curved thermal insulation pad 306, and a fitted thermal insulation pad 307;

[0054] The outer end of the integrated insulating sleeve 222 is equidistantly bonded with a number of limiting thermal insulation pads 301. The inner diameter of the limiting thermal insulation pad 301 is equal to the outer diameter of the integrated insulating sleeve 222, so as to achieve a steady fit limit. The outer end of the limiting thermal insulation pad 301 is bonded with an outer reflective strip 302. The outer end of the integrated insulating sleeve 222 is symmetrically bonded with a double-sided anti-slip strip 303. The longitudinal section of the double-sided anti-slip strip 303 is arc-shaped to ensure the stability of the connection. The side ends of the two double-sided anti-slip strips 303 are bonded with special-shaped integrated plates 304. The longitudinal section of the special-shaped integration plate 304 is L-shaped, which realizes limited support and ensures the stability of the support connection. The side end of the special-shaped integration plate 304 is installed with a telescopic isolation strip 305, and the inner end of the telescopic isolation strip 305 is equidistantly installed with a number of arc-shaped thermal insulation pads 306. The side ends of the two special-shaped integration plates 304 are laid with fitting thermal insulation pads 307 corresponding to the positions of the integrated insulation sleeves 222. The inner ends of the fitting thermal insulation pads 307 are fitted with the outer ends of the integrated insulation sleeves 222 to achieve alignment isolation and ensure the thermal insulation effect.

[0055] The working principle and usage process of the present invention are as follows: When laying the cable, workers adhere multiple double-sided anti-slip strips 303 to the side ends of the integrated insulation sleeve 222 according to the bending position of the cable, adhere the curved thermal insulation pad 306 to the inner side of the special-shaped integrated plate 304, and adhere the fitting thermal insulation pad 307 between the two special-shaped integrated plates 304 to achieve internal filling and sealing. The special-shaped integrated plates 304 are then adhered to the side ends of the double-sided anti-slip strips 303 using an adhesive, thereby simultaneously fixing the special-shaped integrated plates 304, the telescopic isolation strips 305, the curved thermal insulation pad 306, and the fitting thermal insulation pad 307 to the outer end of the integrated insulation sleeve 222, thereby achieving protection for the bending position.

[0056] At this time, when the staff bends the cable, the fitted thermal insulation pad 307 is elastically bent and deformed along the integrated insulating sleeve 222. At the same time, the telescopic isolation strip 305 near the inside of the bend is pressed inward, and the telescopic isolation strip 305 near the outside of the bend is stretched outward. Through elastic deformation, stable protection is achieved for the cable bend. The arc-shaped thermal insulation pad 306 and the fitted thermal insulation pad 307 are used to insulate the inside and outside to achieve bending insulation. The integrated insulating sleeve 222 is insulated by the limiting thermal insulation pad 301, and the outer reflective strip 302 is used for reflective treatment. The telescopic isolation strip 305 is used to isolate the integrated insulating sleeve 222 from ultraviolet rays, thereby achieving anti-ultraviolet treatment of the cable and reducing its aging rate.

[0057] When the cable is running, the fixed core 1 is used for conducting electricity. When conducting electricity, the fixed core 1 generates heat. The heat is conducted outward along the inner limit insulating sleeve 201 to the heat exchange integration frame 203 in the snap connection groove 202. The heat at the position of the inner limit insulating sleeve 201 is conducted outward through the heat exchange integration frame 203, the contact heat exchange plate 205 and the protruding snap connection frame 204. In addition, through a multi-section connection combination, multiple heat exchange positions are connected in series to evenly distribute the heat to various positions, achieving thermal balance. The contact heat exchange plate 205 is supported and divided by the support exchange plate 206, and at the same time, heat conduction is combined to increase the heat dissipation area, thereby achieving heat transfer from the inside to the outside.

[0058] When the cable is laid and bent, the two sets of Z-shaped expansion plates 208 slide and exchange positions with each other to achieve deformation dislocation. In addition, through the compression treatment of the expansion fixing holes 209, the expansion processing holes 212 provide buffer support for the closed buffer sleeve 211. The Z-shaped expansion plates 208, the connecting reinforcement ribs 210 and the closed buffer sleeve 211 provide elastic compression support for the interior, thereby ensuring the tightness of the internal structure.

[0059] The interior is isolated by the inner shielding strip 213, and the heat is conducted outward by the raised slide 214 and the outer guide limit plate 215 to achieve heat discharge again. The internal air flow is driven by the circulating air holes 219 in the filling mounting block 218, and the heat circulation is driven by the air flow to achieve cooling and heat circulation treatment of the raised slide 214 and the outer guide limit plate 215. The raised slide 214 and the outer guide limit plate 215 are buffered by the buffer integration sleeve 223, and the raised slide 214 slides along the integrated connecting strip 216 and the inner limit groove column 217 to achieve internal overall buffer support. The internal and external environments are isolated by the outer heat insulation sheet 221, and the internal fixed wire core 1 is electromagnetically isolated by the outer shielding strip 220 to achieve internal protection and cooling treatment. The interior is insulated by the integrated insulating sleeve 222 to ensure isolation and maintenance of the cable.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment 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 will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A low-voltage power cable resistant to ultraviolet aging, comprising a fixed core (1), characterized in that: The fixed wire core (1) is provided with a buffer processing component (2); The buffer processing assembly (2) comprises an inner limiting insulating sleeve (201); The outer side of the fixed wire core (1) is sleeved with an inner limiting insulating sleeve (201), the outer side end of the inner limiting insulating sleeve (201) is provided with a plurality of engaging connection grooves (202) at equal intervals, and the outer side end of the inner limiting insulating sleeve (201) is clamped with a plurality of heat exchange integration frames (203) at equal intervals; A raised snap-fit ​​frame (204) is provided on the outer end of the inner limiting insulating sleeve (201) and one inner end of the heat exchange integration frame (203); a plurality of contact heat exchange plates (205) are equidistantly sleeved on the side end of the raised snap-fit ​​frame (204); and a plurality of support exchange plates (206) are symmetrically bonded to the inner side of the heat exchange integration frame (203); A bonding assembly strip (207) is bonded to the middle of the outer end of the heat exchange integration frame (203), a Z-shaped telescopic plate (208) is bonded to the outer end of the bonding assembly strip (207), a plurality of telescopic fixing holes (209) are equidistantly opened at one end of the Z-shaped telescopic plate (208), and a plurality of connecting reinforcement ribs (210) are equidistantly embedded and installed at one end of the Z-shaped telescopic plate (208); The outer ends of the plurality of Z-shaped telescopic plates (208) are sleeved with a closed buffer sleeve (211), one end of the closed buffer sleeve (211) is provided with a plurality of telescopic processing holes (212) at equal intervals, and the outer end of the closed buffer sleeve (211) is provided with a plurality of inner shielding strips (213) at equal intervals.

2. The low-voltage power cable resistant to ultraviolet aging according to claim 1, characterized in that: The bottom of the side end of the heat exchange integration frame (203) is inserted into the inner side of the snap connection groove (202), the side end of the contact heat exchange plate (205) is fitted with the side end of the heat exchange integration frame (203), and the side end of the support exchange plate (206) is fitted with the side end of the contact heat exchange plate (205).

3. The low-voltage power cable resistant to ultraviolet aging according to claim 1, characterized in that: The longitudinal sections of the heat exchange integration frame (203), the contact heat exchange plate (205) and the support exchange plate (206) are all arc-shaped, and the longitudinal section of the protruding engagement frame (204) is T-shaped.

4. The low-voltage power cable resistant to ultraviolet aging according to claim 1, characterized in that: The inner end of the Z-shaped expansion and contraction plate (208) is fitted with the outer ends of a plurality of the heat-contacting plates (205), and two adjacent Z-shaped expansion and contraction plates (208) are connected by sliding engagement.

5. The low-voltage power cable resistant to ultraviolet aging according to claim 1, characterized in that: The outer ends of the plurality of inner shielding strips (213) are sleeved with a raised sliding frame (214), one end of the raised sliding frame (214) is bonded with an outer guide limit plate (215), one end of the raised sliding frame (214) is slidably connected with an integrated connecting strip (216), an inner limit groove column (217) is welded between the plurality of integrated connecting strips (216), the side ends of the raised sliding frame (214) and the outer guide limit plate (215) are bonded with a buffer integrated sleeve (223), the side ends of the inner limit groove column (217) are equidistantly mounted with a plurality of filling mounting blocks (218), and the side ends of the filling mounting blocks (218) are equidistantly provided with a plurality of circulation air holes (219); A plurality of outer shielding strips (220) are equidistantly laid on the outer end of the filling installation block (218), outer heat insulation sheets (221) are equidistantly bonded to the side ends of the plurality of outer shielding strips (220), and integrated insulating sleeves (222) are installed on the side ends of the plurality of outer heat insulation sheets (221).

6. The low-voltage power cable resistant to ultraviolet aging according to claim 5, characterized in that: The outer diameter of the Z-shaped telescopic plate (208) is equal to the inner diameter of the closed buffer sleeve (211), and the side end of the raised sliding frame (214) is slidably fitted with the side end of the inner limiting groove column (217).

7. The low-voltage power cable resistant to ultraviolet aging according to claim 5, characterized in that: The side end of the buffer integration sleeve (223) is fitted with the side end of the filling installation block (218), and the side end of the buffer integration sleeve (223) is fitted with the side end of the inner limiting groove column (217).

8. The low-voltage power cable resistant to ultraviolet aging according to claim 5, characterized in that: An isolation component (3) is provided at the outer end of the integrated insulating sleeve (222); The isolation assembly (3) includes a position-limiting thermal insulation pad (301); The outer end of the integrated insulating sleeve (222) is equidistantly bonded with a plurality of position-limiting heat-insulating pads (301), the outer end of the position-limiting heat-insulating pad (301) is bonded with an outer reflective strip (302), the outer end of the integrated insulating sleeve (222) is symmetrically bonded with a double-sided anti-slip strip (303), and the side ends of two of the double-sided anti-slip strips (303) are bonded with a special-shaped integrated plate (304); A telescopic isolation strip (305) is installed at the side end of the special-shaped integration plate (304), and a plurality of arc-shaped thermal insulation pads (306) are installed at equal intervals at the inner end of the telescopic isolation strip (305). Fitting thermal insulation pads (307) are laid at the positions of the integrated insulation sleeves (222) corresponding to the side ends of the two special-shaped integration plates (304).

9. The low-voltage power cable resistant to ultraviolet aging according to claim 8, characterized in that: The longitudinal section of the special-shaped integration plate (304) is L-shaped, and the inner end of the fitting thermal insulation pad (307) fits with the outer end of the integrated insulation sleeve (222).

10. The low-voltage power cable resistant to ultraviolet aging according to claim 8, characterized in that: The longitudinal section of the double-sided anti-slip strip (303) is arc-shaped, and the inner diameter of the position-limiting heat-insulating pad (301) is equal to the outer diameter of the integrated insulating sleeve (222).

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