Tightened high-altitude overhead line

Abstract

The invention discloses a stringed high-altitude overhead line, and relates to the technical field of overhead lines, the outer side of a fixed wire core is sleeved with an insulating isolation sleeve, a plurality of [-shaped pressing air bags are fixed at the outer side end of the insulating isolation sleeve at equal intervals, and a plurality of elastic reinforcing ribs are connected to the inner sides of the [-shaped pressing air bags at equal intervals in a penetrating manner; a plurality of pressing springs are fixed to the top end of the inner side of the n-shaped pressing air bag at equal intervals, hard pressing pieces are fixed to the bottom ends of the pressing springs, buffering pressing pieces are bonded to the bottoms of the side ends of the hard pressing pieces, and a plurality of elastic pressing strips are bonded to the outer side of the insulating isolation sleeve at equal intervals. The problems that heat exchange treatment is directly carried out on the internal and external environments, the internal temperature is greatly influenced by the outside, high temperature and low temperature occur in the cable, the insulating property is reduced, and the sealing effect is reduced are solved, and the stability of the internal environment of the cable is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead lines, and specifically to a high-altitude overhead line for tightening wires. Background Technique

[0002] An overhead cable is an overhead conductor equipped with an insulating layer and a protective outer skin, a special cable manufactured using a production process similar to that of cross-linked cables, and is a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core and have the main characteristics of high power supply reliability, good power supply safety, convenient erection and maintenance, and reasonable economy.

[0003] However, when the current overhead cable is in operation, since heat exchange is directly carried out inside and outside it and no isolation and adjustment components are provided, it remains continuously low-temperature inside in a low-temperature environment and continuously high-temperature inside in a high-temperature environment. As a result, the cable is greatly affected by temperature inside, and it is easy to have a situation where the insulation performance deteriorates and the sealing effect decreases. At the same time, the core and the insulating layer are prone to separation due to thermal expansion and contraction inside, which greatly affects the stable operation of the cable. Summary of the Invention

[0004] The present invention provides a high-altitude overhead line for tightening wires, which can effectively solve the problem proposed in the above background technique that when the current overhead cable is in operation, since heat exchange is directly carried out inside and outside it and no isolation and adjustment components are provided, it remains continuously low-temperature inside in a low-temperature environment and continuously high-temperature inside in a high-temperature environment. As a result, the cable is greatly affected by temperature inside, and it is easy to have a situation where the insulation performance deteriorates and the sealing effect decreases. At the same time, the core and the insulating layer are prone to separation due to thermal expansion and contraction inside, which greatly affects the stable operation of the cable.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-altitude overhead line for tightening wires, including a fixed core, and a self-pressing assembly is provided on the fixed core; The self-pressing assembly includes an insulating isolation sleeve; An insulating isolation sleeve is sleeved outside the fixed core, and a number of U-shaped pressing air bags are equidistantly fixed at the outer end of the insulating isolation sleeve, and a number of elastic reinforcing ribs are equidistantly penetrated and connected inside the U-shaped pressing air bags; A number of pressing springs are equidistantly fixed at the top end inside the U-shaped pressing air bags, a hard pressing piece is fixed at the bottom ends of the plurality of pressing springs, a buffer pressing piece is bonded to the bottom side of the hard pressing piece, and a number of elastic pressing strips are equidistantly bonded to the outside of the insulating isolation sleeve; The outer ends of the plurality of U-shaped pressing air bags are fixedly connected to a flexible integration sleeve, a number of telescopic positioning holes are equidistantly opened at one end of the flexible integration sleeve, a number of combined limiting holes are equidistantly opened at a position near the telescopic positioning holes at one end of the flexible integration sleeve, and an isolation support piece is fixedly connected inside the combined limiting holes; A heat-absorbing telescopic airbag is fixed to the outer end of the flexible integration sleeve, and a number of heat-conducting limiting strips are equidistantly fixed to the outer end of the heat-absorbing telescopic airbag.

[0006] According to the above technical solution, the side ends of the hard pressing sheet and the buffer pressing sheet are slidably sleeved with the side ends of the elastic pressing strip; The hard pressing sheet and the buffer pressing sheet are placed inside the U-shaped pressing airbag.

[0007] According to the above technical solution, a number of heat-conducting special-shaped plates are equidistantly bonded to the outer end of the heat-absorbing telescopic airbag at positions corresponding to the heat-conducting limiting strips, and a heat-insulating limiting pad is bonded to the outer side of the heat-conducting special-shaped plate; The outer ends of a plurality of the heat-insulating limiting pads are slidably sleeved with narrow-edge double-guide sleeves, and guiding support sheets are fixed to one ends of two of the heat-insulating limiting pads; The outer end of the narrow-edge double-guide sleeve is fixedly connected with an inner pressure limiting sleeve, a number of press-fitting air cavities are equidistantly arranged inside the inner pressure limiting sleeve, and a number of shielding strips are equidistantly laid on the outer end of the inner pressure limiting sleeve; The outer ends of a plurality of the shielding strips are fixed with an outer insulating sleeve, and a number of insertion connection holes are equidistantly arranged at positions corresponding to the elastic reinforcing ribs on the side end of the U-shaped pressing airbag.

[0008] According to the above technical solution, the side ends of two adjacent U-shaped pressing airbags are adhesively combined, and the longitudinal sections of the hard pressing sheet, the buffer pressing sheet, the elastic pressing strip, the isolation support sheet, the heat-conducting limiting strip, the heat-insulating limiting pad and the shielding strip are all arc-shaped.

[0009] According to the above technical solution, the longitudinal section of the heat-conducting special-shaped plate is Z-shaped, and two adjacent heat-conducting special-shaped plates are slidably connected to each other.

[0010] According to the above technical solution, the inner end of one side of the heat-conducting special-shaped plate is slidably sleeved with the outer end of one side of the heat-conducting limiting strip, and the inner side of the narrow-edge double-guide sleeve is slidably connected with the outer side of the guiding support sheet.

[0011] According to the above technical solution, the longitudinal section of the narrow-edge double-guide sleeve is semi-circular, and the diameter of the insertion connection hole is equal to the diameter of the elastic reinforcing rib.

[0012] According to the above technical solution, a protection component is arranged on the outer side of the outer insulating sleeve; The protection component includes a convex load-bearing block; A number of convex load-bearing blocks are equidistantly bonded to the outer side of the outer insulating sleeve, an inner concave insertion groove is formed at one end of the convex load-bearing block, a number of integrated bonding strips are equidistantly bonded inside the inner concave insertion groove, a protection and heat-insulating cover is bonded to the outer ends of a plurality of the integrated bonding strips, and diversion limiting strips are fixed to both ends of the protection and heat-insulating cover; Both ends of the raised load-bearing block are welded with load-bearing matching strips. A number of inner pressure buffer pads are equidistantly fixed inside the protective heat-insulating cover, and an anti-corrosion isolation film is laid on the outer side end of the protective heat-insulating cover.

[0013] According to the above technical solution, the load-bearing matching strip is adhesively installed on the outer side end of the outer insulating sleeve, and the inner side end of the protective heat-insulating cover fits with the outer side end of the raised load-bearing block.

[0014] According to the above technical solution, the side end of the inner pressure buffer pad is adhesively combined with the outer side end of the outer insulating sleeve, and the longitudinal sections of the protective heat-insulating cover and the flow guiding restriction strip are arc-shaped.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. There is a self-pressing component. The cable interior is heated by the internal wire core for power supply and heat generation. The U-shaped pressing airbag expands bidirectionally. At this time, the pressing spring presses and combines in both directions on the hard pressing piece, the buffer pressing piece, the elastic pressing strip and the U-shaped pressing airbag. The insulating isolation sleeve is extruded and restricted by the pressing spring, the hard pressing piece and the buffer pressing piece. And the U-shaped pressing airbag expands outwards and extrudes with the soft and fine integration sleeve. It cooperates with the heat absorption expansion airbag to absorb heat and expand bidirectionally. By using the simultaneous internal and external extrusion and expansion, it cooperates with the telescopic positioning holes for buffering support, and cooperates with the superimposed double-layer isolation support pieces for middle support restriction, so that when the interior dissipates heat outwards, it can effectively cooperate with the internal components to achieve self-pressing inside. And when the external temperature drops, the interior can still use its own generated heat and its own elastic pressing structure to form a steady pressing, ensuring the internal compactness; The heat absorption expansion airbag pushes the heat conduction special-shaped plate to move along the heat conduction restriction strip, adjusts the distance between the two heat conduction special-shaped plates and the contact position between the heat conduction restriction strip and the heat conduction special-shaped plate, and cooperates with the heat insulation restriction pad for two-way heat insulation treatment. When the external temperature is high, the inner pressure restriction sleeve and the pressing air cavity expand due to heat and push the narrow-edge double-guide sleeve to slide along the guiding support piece, squeezing and limiting the whole interior, reducing the internal and external heat exchange contact area, thereby reducing the influence of the external high temperature on the interior. When the external temperature is low, the narrow-edge double-guide sleeve and the guiding support piece are elastically supported, limiting and supporting the exterior, and at the same time separating from the interior, reducing the efficiency of the internal heat dissipation to the outside, and cooperating with the heat conduction special-shaped plate to adjust the heat dissipation area and heat dissipation efficiency under the self-expansion and contraction operation of the heat absorption expansion airbag, controlling the internal temperature, and reducing the occurrence of situations such as reduced insulation performance, increased resistance and reduced sealing effect caused by high temperature and low temperature; Through internal heat-absorbing elastic expansion and contraction, coordinated with multiple sets of internal elastic displacement and pressing supports, central heat-absorbing bidirectional pressing treatment, coordinated with the support and fixation of the central isolation support piece and the telescopic positioning hole, coordinated with external elastic support and hot and cold elastic adjustment, it effectively solves the problem in the prior art that no isolation components are set, resulting in direct heat exchange between the internal and external environments, causing the internal temperature to be greatly affected by the outside, resulting in high and low temperatures inside, resulting in reduced insulation performance and reduced sealing effect. The stability of the internal environment of the cable is effectively improved, and internal elastic heat extrusion and elastic adjustment are used to achieve internal stable pressing, ensure the tightness of the cable inside, improve the stability of the cable operation, and extend its service life.

[0016] When overhead cables are in operation, heat exchange is carried out directly inside and outside without isolation and adjustment components. When operating in a low-temperature environment, the internal temperature remains low, and when operating in a high-temperature environment, the internal temperature remains high. As a result, the internal part of the cable is greatly affected by temperature, and the insulation performance is easily reduced, the conductive resistance is increased, and the sealing effect is reduced. At the same time, the core and the insulation are easily separated due to thermal expansion and contraction, which greatly affects the stable operation of the cable.

[0017] 2. A protective component is provided, and the raised load-bearing block and the load-bearing matching strip are bonded to the side end of the outer insulating sleeve, and the integrated adhesive strip is inserted into the inner side of the concave insertion groove, so that the protective insulation cover is fixed to the outer end of the raised load-bearing block, and the inner pressure buffer pad is pressed and connected with the outer insulating sleeve to achieve multi-section steady connection, thereby ensuring steady support and restriction of the protective insulation cover. The protective insulation cover is supported and protected by the raised load-bearing block, the integrated adhesive strip, the load-bearing matching strip and the inner pressure buffer pad, reducing the pressure damage to the cover caused by wind and birds in the high-altitude environment and improving its service life. The protective insulation cover and the anti-corrosion isolation film are used for insulation and waterproofing, reducing the rapid rise in cable temperature caused by direct sunlight in the external environment, and can reduce the corrosion of the cable by rain and light, thereby extending the service life of the cable and ensuring the stability of the use environment.

[0018] To sum up, through the cooperation between the self-pressing components and the protection components, the cooperation between the internal multi-stage temperature adjustment pressing components and the internal telescopic contact heat exchange components, and the coordinated operation of external contact protection and isolation protection, the internal and external coordinated protection is realized, and the aging and damage rate of the cable caused by high temperature, low temperature, rain, snow and light is reduced. Through self-correction and adjustment, the stability of the internal environment of the cable during operation is effectively improved, the mutual influence between the inside and the outside is reduced, and the service life of the cable is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] In the drawings: Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic structural diagram of the self-pressing assembly of the present invention; Figure 3 is a schematic installation structure diagram of the C-shaped pressing airbag of the present invention; Figure 4 is a schematic installation structure diagram of the insulating isolation sleeve of the present invention; Figure 5 is of the present invention Figure 4 A structure enlarged schematic diagram; Figure 6 is of the present invention Figure 4 B structure enlarged schematic diagram; Figure 7 is a schematic structural diagram of the protection component of the present invention; Figure 8 is a schematic installation structure diagram of the flow guiding limiting strip of the present invention; Fig. 9 is of the present invention Figure 8 C structure enlarged schematic diagram; Reference numerals in the figure: 1, fixed wire core; 2, self-pressing assembly; 201, insulating isolation sleeve; 202, C-shaped pressing airbag; 203, elastic reinforcing rib; 204, pressing spring; 205, hard pressing piece; 206, buffer pressing piece; 207, elastic pressing strip; 208, flexible integration sleeve; 209, telescopic positioning hole; 210, combined limiting hole; 211, isolation support piece; 212, heat absorption telescopic airbag; 213, heat conduction limiting strip; 214, heat conduction special-shaped plate; 215, heat insulation limiting pad; 216, narrow-edge double guide sleeve; 217, guiding support piece; 218, inner pressure limiting sleeve; 219, pressing air cavity; 220, shielding strip; 221, outer insulating sleeve; 222, insertion connection hole; 3, protection component; 301, convex load-bearing block; 302, concave insertion groove; 303, integration bonding strip; 304, protection heat insulation cover; 305, flow guiding limiting strip; 306, load-bearing cooperation strip; 307, inner pressure buffer pad; 308, anti-corrosion isolation film. Detailed implementation manners

[0021] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0022] Embodiment: As Figure 1-9 shown, the present invention provides a technical solution, a high-altitude overhead line for tightening wires, including a fixed wire core 1, and the fixed wire core 1 is provided with a self-pressing assembly 2; The self - pressing component 2 includes an insulating isolation sleeve 201, a U - shaped pressing airbag 202, an elastic reinforcing rib 203, a pressing spring 204, a rigid pressing sheet 205, a buffer pressing sheet 206, an elastic pressing strip 207, a flexible integration sleeve 208, a telescopic positioning hole 209, a combined limiting hole 210, an isolation support sheet 211, a heat - absorbing telescopic airbag 212, a heat - conducting limiting strip 213, a heat - conducting special - shaped plate 214, a heat - insulating limiting pad 215, a narrow - side double - guide sleeve 216, a guiding support sheet 217, an inner - pressure limiting sleeve 218, a pressing air cavity 219, a shielding strip 220, an outer insulating sleeve 221, and an insertion connection hole 222; An insulating isolation sleeve 201 is sleeved outside the fixed wire core 1. A number of U - shaped pressing airbags 202 are fixedly arranged at equal intervals on the outer side end of the insulating isolation sleeve 201. The side ends of two adjacent U - shaped pressing airbags 202 are bonded and combined to achieve stable support positioning and limitation, ensuring the overall inward pressing and support positioning treatment. A number of elastic reinforcing ribs 203 are connected through the inner side of the U - shaped pressing airbag 202 at equal intervals. A number of pressing springs 204 are fixedly arranged at equal intervals at the top end of the inner side of the U - shaped pressing airbag 202. A rigid pressing sheet 205 is fixed at the bottom ends of the multiple pressing springs 204. A buffer pressing sheet 206 is bonded to the bottom of the side end of the rigid pressing sheet 205. A number of elastic pressing strips 207 are adhesively arranged at equal intervals on the outer side of the insulating isolation sleeve 201. The side ends of the rigid pressing sheet 205 and the buffer pressing sheet 206 are slidably sleeved with the side ends of the elastic pressing strip 207. The rigid pressing sheet 205 and the buffer pressing sheet 206 are placed inside the U - shaped pressing airbag 202 to achieve multi - segment pressing alignment support and pressing limit treatment, ensuring the stability of the overall fixed limitation and the steady operation of the inward pressing; The outer side ends of the multiple U - shaped pressing airbags 202 are fixedly connected with a flexible integration sleeve 208. A number of telescopic positioning holes 209 are arranged at equal intervals at one end of the flexible integration sleeve 208. A number of combined limiting holes 210 are arranged at equal intervals at a position close to the telescopic positioning holes 209 at one end of the flexible integration sleeve 208. An isolation support sheet 211 is fixedly connected inside the combined limiting holes 210. A heat - absorbing telescopic airbag 212 is fixed at the outer side end of the flexible integration sleeve 208. A number of heat - conducting limiting strips 213 are fixedly arranged at equal intervals at the outer side end of the heat - absorbing telescopic airbag 212; A number of heat-conducting special-shaped plates 214 are adhesively bonded at equal intervals at the position corresponding to the heat-conducting limit strip 213 on the outer side end of the heat-absorbing telescopic airbag 212. The longitudinal section of the heat-conducting special-shaped plate 214 is Z-shaped. Two adjacent heat-conducting special-shaped plates 214 are slidably connected to each other. The inner end of the heat-conducting special-shaped plate 214 is slidably sleeved with the outer end of the heat-conducting limit strip 213, realizing a steady coordinated linkage of heat-conducting adjustment, and realizing a steady operation of sliding transposition and fine adjustment correction. An insulating limit pad 215 is adhesively bonded to the outer side of the heat-conducting special-shaped plate 214. The outer side ends of a plurality of insulating limit pads 215 are slidably sleeved with a narrow-edge double guide sleeve 216. One end of each of two insulating limit pads 215 is fixed with a guiding support piece 217. The inner side of the narrow-edge double guide sleeve 216 is slidably connected to the outer side of the guiding support piece 217. The longitudinal section of the narrow-edge double guide sleeve 216 is semicircular, realizing telescopic movement and transposition adjustment, and ensuring a steady operation of internal pressing correction and pressing limit; The outer side end of the narrow-edge double guide sleeve 216 is fixedly connected with an internal pressure limit sleeve 218. The materials of the U-shaped pressing airbag 202, the flexible integration sleeve 208, the heat-absorbing telescopic airbag 212 and the internal pressure limit sleeve 218 are all heat-conducting silica gel. A number of pressing air cavities 219 are equidistantly opened on the inner side of the internal pressure limit sleeve 218. A number of shielding strips 220 are equidistantly laid on the outer side end of the internal pressure limit sleeve 218. The longitudinal sections of the hard pressing piece 205, the buffer pressing piece 206, the elastic pressing strip 207, the isolation support piece 211, the heat-conducting limit strip 213, the insulating limit pad 215 and the shielding strip 220 are all arc-shaped, realizing a steady connection and fitting, and ensuring the stability of the overall alignment support. The outer side ends of a plurality of shielding strips 220 are fixed with an outer insulating sleeve 221. A number of insertion connection holes 222 are equidistantly opened at the position corresponding to the elastic reinforcing rib 203 on the side end of the U-shaped pressing airbag 202. The diameter of the insertion connection hole 222 is equal to the diameter of the elastic reinforcing rib 203, ensuring the fixed effect of connection alignment and connection limit.

[0023] An outer insulating sleeve 221 is provided with a protection component 3 on its outer side; The protection component 3 includes a convex load-bearing block 301, a concave insertion groove 302, an integrated adhesive strip 303, a protection and heat-insulating cover 304, a diversion limit strip 305, a load-bearing cooperation strip 306, an internal pressure buffer pad 307 and an anti-corrosion isolation film 308; A plurality of raised load-bearing blocks 301 are bonded equidistantly to the outside of the outer insulating sleeve 221. A concave insertion groove 302 is provided at one end of the raised load-bearing block 301. A plurality of integrated bonding strips 303 are bonded equidistantly to the inside of the concave insertion groove 302. A protective heat-insulating cover 304 is bonded to the outer end of the plurality of integrated bonding strips 303. The protective heat-insulating cover 304 is made of aerogel. The inner end of the protective heat-insulating cover 304 is fitted with the outer end of the raised load-bearing block 301 to ensure stable support and fixation of the support buffer and the connection limit. Both ends of the protective heat-insulating cover 304 are fixedly connected with the diversion limiting strips 305. The longitudinal sections of the protective insulation cover 304 and the guide limiting strip 305 are arc-shaped to ensure alignment, fit and steady support. Load-bearing matching strips 306 are welded at both ends of the raised load-bearing block 301. The load-bearing matching strips 306 are bonded and installed on the outer end of the outer insulating sleeve 221 to achieve fit support and connection stability. A number of internal pressure buffer pads 307 are equidistantly fixed on the inner side of the protective insulation cover 304. The side ends of the internal pressure buffer pads 307 are bonded and combined with the outer end of the outer insulating sleeve 221 to achieve buffer support and buffer positioning. The outer end of the protective insulation cover 304 is covered with an anti-corrosion isolation film 308.

[0024] The working principle and use process of the present invention are as follows: when laying the overhead cable, the cable is laid and fixed on the power transmission equipment, and the fixed wire core 1 is installed on the transformer equipment and the power supply equipment to realize the laying of the overhead line. When the overhead cable is laid, the raised load-bearing block 301 and the load-bearing matching strip 306 are bonded to the outer insulating sleeve 221 by adhesive, and the integrated adhesive strip 303 is inserted into the inner side of the concave insertion groove 302, and the integrated adhesive strip 303 and the raised load-bearing block 301 are bonded and connected by adhesive, so that the protective heat-insulating cover 304 is fixed to the outer end of the raised load-bearing block 301. At this time, the internal pressure buffer pad 307 will be pressed onto the outer insulating sleeve 221 to realize multi-section steady connection, thereby ensuring steady support and restriction on the protective heat-insulating cover 304. After multiple protective heat-insulating covers 304 are fixed After completion, the anti-corrosion isolation film 308 is bonded and laid to the outer end of the protective heat-insulating cover 304 to achieve protection treatment. The protective heat-insulating cover 304 is supported and protected by the raised load-bearing block 301, the integrated adhesive strip 303, the load-bearing matching strip 306 and the internal pressure buffer pad 307 to reduce the pressure damage to the protective heat-insulating cover 304 caused by wind and birds in the high-altitude environment and increase its service life. The protective heat-insulating cover 304 and the anti-corrosion isolation film 308 are used for heat insulation and waterproofing. When it rains, the rainwater flows along the arc-shaped diversion of the protective heat-insulating cover 304 and the diversion limiting strip 305, and the rainwater is discharged to both sides, reducing the amount of rainwater contacting the cable surface, reducing the rapid rise in cable temperature caused by direct exposure to the external environment, and can reduce the corrosion of the cable by rainwater and light, extend the service life of the cable, and ensure the stability of the use environment; During the operation of the cable, the fixed core 1 is used for conducting electricity. During the continuous conduction process, the fixed core 1 will generate heat, and the heat will be conducted outwards along the fixed core 1 and the insulating isolation sleeve 201. The heat is transferred to the C-shaped pressing airbag 202 through air heat conduction and heat exchange between the insulating isolation sleeve 201 and the C-shaped pressing airbag 202. The C-shaped pressing airbag 202 expands. At this time, the pressing spring 204 drives the hard pressing piece 205 and the buffer pressing piece 206 to press against the side end of the insulating isolation sleeve 201 along the elastic pressing strip 207. The two ends of the C-shaped pressing airbag 202 expand simultaneously. At this time, the elastic reinforcing rib 203 supports the C-shaped pressing airbag 202 and undergoes elastic deformation. When expanding inward, it squeezes the pressing spring 204. At this time, the pressing spring 204 is squeezed bidirectionally by the hard pressing piece 205 and the buffer pressing piece 206. The pressing spring 204 pushes the hard pressing piece 205 and the buffer pressing piece 206 to squeeze towards the insulating isolation sleeve 201 along the elastic pressing strip 207, pushing the insulating isolation sleeve 201 to squeeze towards the side end of the fixed core 1, realizing multi-segment internal extrusion; When expanding outwards, the C-shaped pressing airbag 202 pushes the flexible integration sleeve 208 to extrude outwards. At this time, the entire telescopic positioning hole 209 deforms, its rectangular cross-section length becomes longer and the width becomes narrower. The isolation support piece 211 and the combined limiting hole 210 press and limit the flexible integration sleeve 208 as a whole. Through external overall limiting and segmented support and superimposed limiting by the isolation support piece 211, overall support and positioning are realized. At the same time, the internal heat is conducted along the insulating isolation sleeve 201, the C-shaped pressing airbag 202 and the flexible integration sleeve 208 to the position of the heat-absorbing telescopic airbag 212. At this time, the air at the position of the heat-absorbing telescopic airbag 212 is heated, causing the heat-absorbing telescopic airbag 212 to expand both inwards and outwards. The flexible integration sleeve 208 and the heat-absorbing telescopic airbag 212 are squeezed simultaneously in both directions, restricting the interior, realizing middle extrusion and fixation, and cooperating with the isolation support piece 211 for positioning support and limiting fixation to ensure the stability of middle fixation and support; When the heat-absorbing telescopic airbag 212 expands, it pushes the heat-conducting special-shaped plate 214 to slide along the heat-conducting limiting strip 213. At the same time, the two heat-conducting special-shaped plates 214 slide and change positions, changing the heat dissipation area of the heat-conducting special-shaped plate 214, and isolating and restricting through the heat-insulating limiting pad 215, realizing internal high-temperature internal and external heat exchange. The internal heat is conducted outwards along the heat-conducting limiting strip 213 and the heat-conducting special-shaped plate 214, and is isolated and limited through the heat-insulating limiting pad 215. At the same time, the heat-conducting special-shaped plate 214 pushes the narrow-side double-guide sleeves 216 on both sides to move along the guiding support piece 217, changing the distance between the two narrow-side double-guide sleeves 216, thereby adjusting the contact area between the guiding support piece 217 and the narrow-side double-guide sleeves 216 and increasing the internal heat-conducting heat exchange area; When the internal temperature is normal and the external temperature is low, the internal heat is transferred to the position of the internal pressure limiting sleeve 218. At this time, the air in the pressed air cavity 219 is heated and expanded, and the external support and limitation are performed through the outer insulating sleeve 221 and the shielding strip 220. At this time, the internal pressure limiting sleeve 218 is squeezed inward, pushing the guide support plate 217 to reset, reducing the internal heat conduction area, thereby reducing the efficiency of internal and external heat exchange, and adjusting the internal and external heat conduction areas according to the internal and external temperatures, thereby realizing thermal conductivity regulation, and the overall cable integration processing can be realized through the three-stage internal and external extrusion, ensuring the tightness of the internal extrusion of the cable in different environments, and ensuring the stability of the cable pressing.

[0025] 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. A tight-wire overhead line, comprising a fixed wire core (1), characterized in that: The fixed wire core (1) is provided with a self - pressing component (2); The self - pressing component (2) includes an insulating isolation sleeve (201); An insulating isolation sleeve (201) is sleeved outside the fixed wire core (1). A number of U - shaped pressing air bags (202) are fixedly arranged at equal intervals at the outer end of the insulating isolation sleeve (201). A number of elastic reinforcing ribs (203) are connected through the inner side of the U - shaped pressing air bags (202) at equal intervals; A number of pressing springs (204) are fixedly arranged at equal intervals at the top end inside the U - shaped pressing air bags (202). A hard pressing piece (205) is fixed at the bottom ends of the plurality of pressing springs (204). A buffer pressing piece (206) is adhered to the bottom of the side end of the hard pressing piece (205). A number of elastic pressing strips (207) are adhered to the outside of the insulating isolation sleeve (201) at equal intervals; The outer ends of the plurality of U - shaped pressing air bags (202) are fixedly connected with a flexible integration sleeve (208). A number of telescopic positioning holes (209) are arranged at equal intervals at one end of the flexible integration sleeve (208). A number of combined limiting holes (210) are arranged at equal intervals at a position close to the telescopic positioning holes (209) at one end of the flexible integration sleeve (208). An isolation support piece (211) is fixedly connected inside the combined limiting holes (210); An endothermic telescopic air bag (212) is fixed at the outer end of the flexible integration sleeve (208). A number of heat - conducting limiting strips (213) are fixedly arranged at equal intervals at the outer end of the endothermic telescopic air bag (212).

2. The tight-wire overhead line according to claim 1, characterized in that: The side ends of the hard pressing piece (205) and the buffer pressing piece (206) are slidably sleeved with the side ends of the elastic pressing strips (207); The hard pressing piece (205) and the buffer pressing piece (206) are placed inside the U - shaped pressing air bags (202).

3. The tight-wire overhead line according to claim 1, characterized in that: A number of heat - conducting special - shaped plates (214) are adhered to the outer end of the endothermic telescopic air bag (212) corresponding to the position of the heat - conducting limiting strips (213). A heat - insulating limiting pad (215) is adhered to the outside of the heat - conducting special - shaped plates (214); The outer ends of the plurality of heat - insulating limiting pads (215) are slidably sleeved with a narrow - side double - conducting sleeve (216). Guide support pieces (217) are fixed at one end of two of the heat - insulating limiting pads (215); The outer end of the narrow - side double - conducting sleeve (216) is fixedly connected with an inner - pressure limiting sleeve (218). A number of pressing air cavities (219) are arranged at equal intervals inside the inner - pressure limiting sleeve (218). A number of shielding strips (220) are laid at equal intervals at the outer end of the inner - pressure limiting sleeve (218); The outer ends of the plurality of shielding strips (220) are fixed with an outer insulating sleeve (221). A number of insertion connection holes (222) are arranged at equal intervals at the side end of the U - shaped pressing air bags (202) corresponding to the position of the elastic reinforcing ribs (203).

4. The tight-wire overhead line according to claim 3, characterized in that: The side ends of two adjacent U - shaped pressing air bags (202) are adhered and combined. The longitudinal sections of the hard pressing piece (205), the buffer pressing piece (206), the elastic pressing strip (207), the isolation support piece (211), the heat - conducting limiting strip (213), the heat - insulating limiting pad (215) and the shielding strip (220) are all arc - shaped.

5. The tight-wire overhead line according to claim 3, characterized in that: The longitudinal section of the heat-conducting special-shaped plate (214) is Z-shaped, and two adjacent heat-conducting special-shaped plates (214) are slidably connected to each other.

6. The tight-wire overhead line according to claim 3, characterized in that: An inner end of the heat-conducting special-shaped plate (214) is slidably fitted with an outer end of the heat-conducting limiting strip (213), and an inner side of the narrow-edge double guide sleeve (216) is slidably connected with an outer side of the guide support sheet (217).

7. The tight-wire overhead line according to claim 3, characterized in that: The longitudinal section of the narrow-side double guide sleeve (216) is semicircular, and the diameter of the insertion connection hole (222) is equal to the diameter of the elastic reinforcing rib (203).

8. The tight-wire overhead line according to claim 3, characterized in that: A protective component (3) is arranged outside the outer insulating sleeve (221); The protection component (3) comprises a raised load-bearing block (301); A plurality of raised load-bearing blocks (301) are bonded at equal intervals to the outside of the outer insulating sleeve (221); a concave insertion groove (302) is provided at one end of the raised load-bearing block (301); a plurality of integrated bonding strips (303) are bonded at equal intervals to the inside of the concave insertion groove (302); a plurality of the integrated bonding strips (303) are bonded at outer ends to protective heat-insulating covers (304); and both ends of the protective heat-insulating cover (304) are fixedly connected to flow-guiding limiting strips (305); The two ends of the raised load-bearing block (301) are welded with load-bearing matching strips (306), a plurality of internal pressure buffer pads (307) are fixed at equal intervals on the inner side of the protective heat-insulating cover (304), and an anti-corrosion isolation film (308) is laid on the outer end of the protective heat-insulating cover (304).

9. The tight-wire overhead line according to claim 8, characterized in that: The load-bearing matching strip (306) is bonded and installed on the outer end of the outer insulating sleeve (221), and the inner end of the protective heat-insulating cover (304) is fitted with the outer end of the raised load-bearing block (301).

10. The tight-wire overhead line according to claim 8, characterized in that: The side end of the internal pressure buffer pad (307) is bonded and assembled with the outer end of the outer insulating sleeve (221); the longitudinal sections of the protective heat insulation cover (304) and the flow guide limiting strip (305) are arc-shaped.

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