CN117790067B - 35KV cable for power generation of wind energy - Google Patents

Abstract

The invention discloses a 35kV cable for power generation of wind energy, which relates to the technical field of cables and comprises three central conductors distributed along the circumferential direction, wherein an inner polyethylene protective layer is wrapped on the outer side of each central conductor, an inner metal shielding layer is tightly wrapped on the outer side of each inner polyethylene protective layer, an inner rubber protective layer is tightly wrapped on the outer side of each inner metal shielding layer, fiber limiting layers are jointly wrapped on the outer sides of the three inner rubber protective layers, and an outer braiding shielding layer is tightly wrapped on the outer sides of the fiber limiting layers.

Description

35KV cable for power generation of wind energy

Technical Field

The invention relates to the technical field of cables, in particular to a 35kV cable for generating electricity by wind power.

Background

The cable is an electric energy or signal transmission device, and is generally a cable similar to a rope formed by twisting several or several groups of wires (at least two wires in each group), wherein the wires in each group are mutually insulated and are often twisted around a center, the whole outside of the cable is covered with a high-insulation covering layer, the cable has the characteristics of inner power supply and outer insulation, and the cable is required to be used in the wind power discharge process;

But the current wind power generation cable is limited by the use environment in the use process, so that the cable is usually installed in a vertical installation mode in the installation process, and a large number of hoops are required to be used for fixing the side surfaces of the cable in the cable installation process, so that the complexity of cable fixing is increased, and the convenience of subsequent replacement and overhaul of the cable is reduced.

Disclosure of Invention

The invention provides a 35kV cable for power generation of wind energy, which can effectively solve the problems that the wind power generation cable provided in the background art is limited by the use environment in the use process, the cable is usually installed in a vertical installation mode in the installation process, a large number of hoops are required to be used for fixing the side surfaces of the cable in the cable installation process, the complexity of cable fixing is further increased, and the convenience of subsequent replacement and overhaul of the cable is reduced.

In order to achieve the above purpose, the present invention provides the following technical solutions: the 35kV cable for power generation of the wind power source comprises three central conductors distributed along the circumferential direction, wherein an external rubber protection layer is arranged on the outer side of each central conductor, a side expansion limiting mechanism is arranged on the outer side of each external rubber protection layer, and each side expansion limiting mechanism comprises an external mounting sleeve;

The outer side of the outer rubber protective layer is tightly covered with an outer mounting sleeve, limit expansion arc-shaped bags are uniformly arranged on the outer side of the outer mounting sleeve at equal intervals along the circumferential direction, independent expansion liquid bags are adhered to one side of the inner part of each limit expansion arc-shaped bag, connecting films are arranged at the end parts of two adjacent limit expansion arc-shaped bags, a central liquid guide flat groove is formed in the middle of the end face of each connecting film in a penetrating manner, and liquid guide side holes are formed in two sides of the end face of each connecting film in a penetrating manner;

A connecting flat belt is adhered to the middle part of the cambered surface of the inner ring of the connecting film, heat conduction side pieces are adhered to two sides of the cambered surface of the inner ring of the connecting flat belt, and a telescopic cylindrical bag is embedded and installed at the middle part of the cambered surface of the outer side of the connecting flat belt;

The end part of the limiting expansion arc-shaped bag at the tail end is fixedly connected with a sealing end bag, the middle part of the outer side of the sealing end bag is fixedly connected with a connecting side pipe, the outer side of the limiting expansion arc-shaped bag is tightly covered with an elastic constraint sleeve, the outer side of the elastic constraint sleeve is covered with an isolation rubber sleeve, wear-resistant rubber sheets are uniformly and fixedly bonded on the outer side of the isolation rubber sleeve along the circumferential direction at equal intervals, and an elastic filling sheet is filled in a gap part between the corresponding wear-resistant rubber sheets on the outer side of the isolation rubber sleeve;

The side expansion limiting mechanism is used for carrying out quick dynamic adjustment on the outer diameter of the cable, so that after the cable is installed inside the installation pipeline, the cable is fixed through friction between the outer side of the cable and the inner wall of the pipeline, and the stability of cable installation is improved.

According to the technical scheme, the outside cladding of center conductor has inside polyethylene inoxidizing coating, inside polyethylene inoxidizing coating outside closely twines has inside metal shielding layer, inside metal shielding layer outside closely cladding has inside rubber inoxidizing coating, three inside rubber inoxidizing coating outside cladding has the fibre spacing layer jointly, the outside closely cladding of fibre spacing layer has outside braided shield, outside braided shield outside cladding has outside rubber inoxidizing coating.

According to the technical scheme, the cambered surface of the inner ring of the limiting expansion arc-shaped bag is tightly attached to the outer side of the external mounting sleeve, the expansion solution is filled in the independent expansion liquid bag, and the two ends of the connecting film are respectively and fixedly connected with the two corresponding limiting expansion arc-shaped bags;

The two ends of the connecting flat belt are fixedly connected with the corresponding end faces of the two corresponding limiting expansion arc-shaped bags respectively, and the connecting flat belt and the inner arc surface of the heat-conducting side piece are tightly attached to the outer side of the external mounting sleeve.

According to the technical scheme, heated expansion liquid is filled in the telescopic cylindrical bag, and the diameter of the end face of the telescopic cylindrical bag is larger than the width of the side face of the central liquid guide flat groove.

According to the technical scheme, the wear-resistant rubber sheet is made of hard rubber, wear-resistant particles are uniformly arranged on the outer side of the wear-resistant rubber sheet, and the outer cambered surface of the wear-resistant rubber sheet and the outer cambered surface of the elastic filling sheet are mutually flush.

According to the technical scheme, a gap telescopic heat transfer mechanism is arranged on the outer side of the outer mounting sleeve, and the gap telescopic heat transfer mechanism comprises a limiting long groove;

A limiting long groove is formed in the outer side of the outer mounting sleeve, corresponding to the side surface of the outer mounting sleeve, a filling arc groove is uniformly formed in the inner cambered surface of the limiting long groove, a heat conducting arc piece is tightly filled in the filling arc groove, a heat conducting elastic bag is arranged in the limiting long groove, corresponding to the outer side of the heat conducting arc piece, two ends of the heat conducting elastic bag are respectively provided with an inner embedded sleeve, a connecting elastic rubber block is arranged between two adjacent heat conducting elastic bags, and a telescopic liquid rod is installed in the middle of the inner side of the connecting elastic rubber block in a penetrating manner, corresponding to the inner embedded sleeve;

The gap telescopic heat transfer mechanism is used for dynamically conducting heat on the outer side of the cable, so that the heat on the outer side of the cable is distributed more uniformly, and the overall heat dissipation performance of the cable is improved.

According to the technical scheme, the outer cambered surface of the heat conduction arc piece is flush with the inner cambered surface of the limiting long groove, the outer cambered surface of the heat conduction elastic bag is flush with the outer cambered surface of the external mounting sleeve, and the two ends of the connecting elastic rubber block are fixedly connected with the end surfaces of the two corresponding heat conduction elastic bags respectively.

According to the technical scheme, inert gas is filled in the heat conduction elastic bag, the outside of the inner mosaic sleeve is tightly attached to the telescopic liquid rod, and heat conduction solution is filled in the telescopic liquid rod.

According to the technical scheme, the inner constraint shaping mechanism is arranged on the outer side of the inner rubber protective layer and comprises a central mounting sleeve;

A central mounting sleeve is uniformly arranged at the gap between the outer side of the inner rubber protective layer and the fiber limiting layer along the circumferential direction at equal intervals, a polygonal sleeve is uniformly sleeved at the outer side of the central mounting sleeve at equal intervals, an outer mounting belt is correspondingly arranged at the position of the outer side of the polygonal sleeve corresponding to the inner side of the fiber limiting layer, an elastic side belt is bonded between the side surface of the polygonal sleeve and the inner side of the outer mounting belt, filling rubber strips are respectively embedded at the positions of the two sides of the inner side of the fiber limiting layer corresponding to the outer mounting belt, and reinforcing thin ropes are arranged in the middle of the inner side of the filling rubber strips in a penetrating manner;

The internal constraint shaping mechanism is used for isolating and supporting the inside of the cable, so that the internal rubber protection layer can reset under the action of elasticity after being displaced.

According to the technical scheme, a gap is formed between two adjacent elastic side belts, and the outer side face of the filling rubber strip is respectively and tightly attached to the inner side of the inner rubber protection layer, the outer mounting belt and the inner side of the fiber limiting layer.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. The side expansion limiting mechanism is arranged, the installation and fixation process of the wind power cable is optimized through the mutual coordination among all components in the side expansion limiting mechanism, through the structural design of the expansion limiting arc-shaped bag, the elastic constraint sleeve and the isolation rubber sleeve which can expand and retract outside the cable, the cable can be integrally fixed only by conveying filling liquid into the expansion limiting arc-shaped bag through the connecting side pipe after penetrating into the installation pipeline, the filling liquid is stopped to be added after the internal pressure of the expansion limiting arc-shaped bag reaches a preset value, the tail end of the connecting side pipe is sealed, the cable is fixed through the friction force between the wear-resistant rubber sheet and the inner wall of the installation pipeline, the installation and fixation mode of the cable is effectively simplified, the stress mode of the cable is effectively improved, the distribution of all parts outside the cable is more uniform, the installation stability of the cable is effectively improved, and when the cable is required to be overhauled and replaced, the limitation between the cable and the installation pipeline is rapidly canceled, and the convenience of the cable is further improved;

Simultaneously through independent inflation liquid bag and the inside independent seal design of flexible cylinder bag, make the cable in the in-process that the circular telegram was used, through the expansion of independent inflation liquid bag strengthen the frictional force between cable outside wear-resisting rubber sheet and the installation pipeline inner wall, and then effectually improved the reliability of cable integral erection, and can keep apart between the spacing inflation arc bag through the inflation of flexible cylinder bag, and then effectually prevented that the inside filling liquid of spacing inflation arc bag from concentrating downwards under the effect of gravity, and then effectually improved cable installation rate and installation stability.

2. The gap expansion heat transfer mechanism is arranged, the components are tightly arranged on the side face of the limiting expansion arc-shaped bag through the limiting long groove and the filling arc groove by mutually matching the components in the gap expansion heat transfer mechanism, and the heat in the cable is transferred axially and radially through the heat conducting arc-shaped sheet matched with the heat conducting elastic bag and the expansion liquid rod, so that the heat is distributed more uniformly on the outer side of the cable, and the cable can also transfer the heat in the cable rapidly after being used for a long time;

Simultaneously through the elastic design of heat conduction elastic bag, when making spacing inflation arc bag take place to expand or cable receive outside extrusion, the cable outside can carry out abundant elastic deformation, and then effectually prevents that the cable from appearing breaking after receiving the extrusion, and then the effectual whole barrier propterty in the cable outside that has improved.

3. The internal constraint shaping mechanism is arranged, the mutual coordination among all components in the internal constraint shaping mechanism is realized, the overall stress condition of the cable is improved, the outer belt and the elastic side belt can be conveniently installed inside the cable through the polygonal sleeve, meanwhile, the elastic structure design of the elastic side belt enables the external force borne by the cable to be quickly reset after being removed, the unrecoverable deformation of the cable when the external force acts is effectively avoided, the overall structural resistance of the cable is effectively improved, and the service life of the cable is prolonged.

In conclusion, through the mutual cooperation between each inside subassembly of side expansion stop gear, flexible heat transfer mechanism in clearance and inside constraint shaping mechanism, through the flexible structural design of spacing expansion arc bag, heat conduction elastic bag and elasticity side area, improved the holistic barrier property of cable, effectually prevented that the cable from receiving external force and appearing the phenomenon of deformation in the use, ensured the whole integrality of cable, and then effectually avoided the cable to receive the damage and influence the installation in the transportation, and then effectually improved the whole life of cable.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.

In the drawings:

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the construction of the mounting of the external mounting sleeve of the present invention;

FIG. 3 is a schematic view of the structure of the end of the present invention;

FIG. 4 is a schematic view of a side expansion limiter mechanism according to the present invention;

FIG. 5 is a schematic illustration of the construction of the independent inflatable bladder of the present invention;

FIG. 6 is a schematic view of the telescopic cylindrical bladder of the present invention;

FIG. 7 is a schematic view of the structure of the present invention for attachment film installation;

FIG. 8 is a schematic view of the configuration of the gap telescoping heat transfer mechanism of the present invention;

FIG. 9 is a schematic view of the structure of the inside of the heat conductive elastic bladder of the present invention;

FIG. 10 is a schematic view of the internal restraint shaping mechanism of the present invention;

FIG. 11 is a schematic structural view of the elastic side band installation of the present invention;

Reference numerals in the drawings: 1. a center conductor; 2. an inner polyethylene protective layer; 3. an inner metal shielding layer; 4. an inner rubber protective layer; 5. a fiber limiting layer; 6. an outer braided shield; 7. an outer rubber protective layer;

8. A side expansion limiting mechanism; 801. an external mounting sleeve; 802. limiting and expanding the arc-shaped bag; 803. independently expanding the liquid bags; 804. connecting films; 805. a central liquid guide flat groove; 806. a liquid guiding side hole; 807. connecting the flat belts; 808. a heat conductive side sheet; 809. a telescoping cylindrical bladder; 810. sealing the end capsule; 811. connecting the side pipes; 812. an elastic constraining sleeve; 813. an isolation rubber sleeve; 814. a wear-resistant rubber sheet; 815. an elastic filler sheet;

9. A gap expansion heat transfer mechanism; 901. a limiting long groove; 902. filling the arc-shaped groove; 903. a thermally conductive arc sheet; 904. a thermally conductive elastic bladder; 905. nesting is carried out inside; 906. connecting an elastic rubber block; 907. a telescopic liquid rod;

10. an internal restraint shaping mechanism; 1001. a central mounting sleeve; 1002. polygonal sleeve; 1003. installing an outer belt; 1004. an elastic side belt; 1005. filling adhesive tape; 1006. reinforcing the lanyard.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

Examples: as shown in fig. 1-11, the invention provides a technical scheme, namely a 35kV cable for generating electricity of wind power energy, which comprises three central conductors 1 distributed along the circumferential direction, wherein the outer sides of the central conductors 1 are coated with an inner polyethylene protective layer 2, the outer sides of the inner polyethylene protective layers 2 are tightly wound with an inner metal shielding layer 3, the outer sides of the inner metal shielding layers 3 are tightly coated with an inner rubber protective layer 4, the outer sides of the three inner rubber protective layers 4 are jointly coated with a fiber limiting layer 5, the outer sides of the fiber limiting layers 5 are tightly coated with an outer braided shielding layer 6, and the outer sides of the outer braided shielding layers 6 are coated with outer rubber protective layers 7;

The outer side of the external rubber protection layer 7 is provided with a side expansion limiting mechanism 8, and the side expansion limiting mechanism 8 is used for rapidly and dynamically adjusting the outer diameter of the cable, so that after the cable is installed in the installation pipeline, the cable is fixed through friction between the outer side of the cable and the inner wall of the pipeline, and the installation stability of the cable is improved;

The side expansion limiting mechanism 8 comprises an external mounting sleeve 801, a limiting expansion arc-shaped bag 802, an independent expansion liquid bag 803, a connecting film 804, a central liquid guide flat groove 805, a liquid guide side hole 806, a connecting flat belt 807, a heat conducting side piece 808, a telescopic cylindrical bag 809, a sealing end bag 810, a connecting side pipe 811, an elastic constraint sleeve 812, an isolating rubber sleeve 813, a wear-resistant rubber piece 814 and an elastic filling piece 815;

The outer side of the outer rubber protective layer 7 is tightly covered with an outer mounting sleeve 801, the outer side of the outer mounting sleeve 801 is uniformly provided with limit expansion arc-shaped bags 802 along the circumferential direction at equal intervals, one side of the inside of each limit expansion arc-shaped bag 802 is adhered with an independent expansion liquid bag 803, the end parts of two adjacent limit expansion arc-shaped bags 802 are provided with connecting films 804, the middle part of the end face of each connecting film 804 is provided with a central liquid guide flat groove 805 in a penetrating way, two sides of the end face of each connecting film 804 are provided with liquid guide side holes 806 in a penetrating way, the inner arc surface of each limit expansion arc-shaped bag 802 is tightly attached to the outer side of the outer mounting sleeve 801, expansion liquid bags 803 are filled with expansion solution, the expansion solution is insulating oil, and two ends of each connecting film 804 are fixedly connected with two corresponding limit expansion arc-shaped bags 802;

A connecting flat belt 807 is adhered to the middle part of the inner arc surface of the connecting film 804, heat conducting side pieces 808 are adhered to two sides of the inner arc surface of the connecting flat belt 807, two ends of the connecting flat belt 807 are fixedly connected with the corresponding end surfaces of the two corresponding limit expansion arc-shaped bags 802 respectively, the inner arc surfaces of the connecting flat belt 807 and the heat conducting side pieces 808 are tightly adhered to the outer side of the external mounting sleeve 801, and the heat conducting side pieces 808 have good heat conducting performance;

The middle part of the outer cambered surface of the connecting flat belt 807 is embedded and provided with a telescopic cylindrical bag 809, the inside of the telescopic cylindrical bag 809 is filled with heated expansion liquid, the two ends of the telescopic cylindrical bag 809 are made of hard materials, the middle part of the telescopic cylindrical bag 809 is made of elastic materials, and the diameter of the end face of the telescopic cylindrical bag 809 is larger than the width of the side face of the central liquid guide flat groove 805;

The end part of the limiting expansion arc-shaped bag 802 positioned at the tail end is fixedly connected with a sealing end bag 810, the middle part of the outer side of the sealing end bag 810 is fixedly connected with a connecting side tube 811, the outer side of the limiting expansion arc-shaped bag 802 is tightly covered with an elastic constraint sleeve 812, the outer side of the elastic constraint sleeve 812 is covered with an isolating rubber sleeve 813, the outer side of the isolating rubber sleeve 813 is uniformly fixed and adhered with a wear-resistant rubber sheet 814 in an equidistant mode along the circumferential direction, gaps between the corresponding wear-resistant rubber sheets 814 on the outer side of the isolating rubber sleeve 813 are filled with elastic filling sheets 815, the elastic constraint sleeve 812, the isolating rubber sleeve 813 and the elastic filling sheets 815 are good in ductility, the wear-resistant rubber sheet 814 is made of hard rubber, wear-resistant particles are uniformly arranged on the outer side of the wear-resistant rubber sheet 814, the outer cambered surfaces of the wear-resistant rubber sheet 814 and the outer cambered surfaces of the elastic filling sheets 815 are mutually flush, through mutual matching among components in the side expansion limiting mechanism 8, the installation and fixation process of the wind power cable is optimized, through the structural design of the expandable and retractable limit expansion arc-shaped bag 802, the elastic constraint sleeve 812 and the isolation rubber sleeve 813 at the outer side of the cable, the cable can be integrally fixed only by conveying filling liquid into the limit expansion arc-shaped bag 802 through the connecting side pipe 811 after being inserted into the installation pipeline, the filling liquid is insulating oil, the filling liquid is stopped to be added and the tail end of the connecting side pipe 811 is sealed after the internal pressure of the limit expansion arc-shaped bag 802 reaches a preset value, the cable is fixed through the friction force between the wear-resistant rubber sheet 814 and the inner wall of the installation pipeline, the installation and fixation mode of the cable is effectively simplified, the stress mode of the cable is effectively improved, the distribution of all parts at the outer side of the cable is more uniform, the installation stability of the cable is effectively improved, and when the cable is required to be overhauled and replaced, only the filling liquid in the limiting expansion arc-shaped bag 802 is discharged, so that the limitation between the cable and the installation pipeline can be rapidly canceled, and the convenience of cable installation is further improved;

Meanwhile, through the independent sealing design in the independent expansion liquid bags 803 and the telescopic cylindrical bags 809, the friction force between the inner walls of the installation pipelines of the wear-resistant rubber sheets 814 on the outer sides of the cables is enhanced through the expansion of the independent expansion liquid bags 803 in the process of electrifying and using the cables, so that the reliability of the integral installation of the cables is effectively improved, the spacing expansion arc-shaped bags 802 can be isolated through the expansion of the telescopic cylindrical bags 809, and further, the downward concentration of filling liquid in the spacing expansion arc-shaped bags 802 under the action of gravity is effectively prevented, and the installation speed and the installation stability of the cables are effectively improved;

The outside of the external mounting sleeve 801 is provided with a gap telescopic heat transfer mechanism 9, and the gap telescopic heat transfer mechanism 9 is used for dynamically conducting heat outside the cable, so that the heat outside the cable is distributed more uniformly, and the overall heat dissipation performance of the cable is improved;

The gap telescopic heat transfer mechanism 9 comprises a limiting long groove 901, a filling arc groove 902, a heat conducting arc piece 903, a heat conducting elastic bag 904, an embedded nest 905, a connecting elastic rubber block 906 and a telescopic liquid rod 907;

A limiting long groove 901 is formed in the outer side of the outer mounting sleeve 801 corresponding to the side surface of the outer mounting sleeve 801, a filling arc groove 902 is uniformly formed in the inner cambered surface of the limiting long groove 901, a heat conducting arc piece 903 is tightly filled in the filling arc groove 902, a heat conducting elastic bag 904 is arranged in the limiting long groove 901 corresponding to the outer side of the heat conducting arc piece 903, inner embedded sleeves 905 are arranged at two ends of the inner part of the heat conducting elastic bag 904, a connecting elastic rubber block 906 is arranged between two adjacent heat conducting elastic bags 904, the outer cambered surface of the heat conducting arc piece 903 and the inner cambered surface of the limiting long groove 901 are mutually flush, the outer cambered surface of the heat conducting elastic bag 904 and the outer cambered surface of the outer mounting sleeve 801 are mutually flush, and two ends of the connecting elastic rubber block 906 are respectively fixedly connected with the end surfaces of the two corresponding heat conducting elastic bags 904;

The middle part of the inner side of the connecting elastic glue block 906 is provided with a telescopic liquid rod 907 in a penetrating way at the position corresponding to the inner position of the inner embedded sleeve 905, inert gas is filled in the heat conducting elastic bag 904, the inert gas is helium, the outer side of the inner embedded sleeve 905 is tightly attached to the telescopic liquid rod 907, the telescopic liquid rod 907 is filled with a heat conducting solution, the components are tightly arranged on the side face of the limiting expansion arc-shaped bag 802 through the mutual matching between the components in the gap telescopic heat transfer mechanism 9, the heat conducting arc-shaped piece 903 is matched with the heat conducting elastic bag 904 and the telescopic liquid rod 907 to transfer the heat in the cable axially and radially, so that the heat is distributed more uniformly on the outer side of the cable, and the heat in the cable can be quickly transferred after the cable is used for a long time;

Meanwhile, through the elastic design of the heat-conducting elastic bag 904, when the limiting expansion arc-shaped bag 802 expands or the cable is extruded from the outer side, the outer side of the cable can be fully elastically deformed, so that the phenomenon that the cable is broken after being extruded is effectively prevented, and the overall protective performance of the outer side of the cable is effectively improved;

the outside of the inner rubber protection layer 4 is provided with an inner constraint shaping mechanism 10, and the inner constraint shaping mechanism 10 is used for isolating and supporting the inside of the cable, so that the inner rubber protection layer 4 can reset under the action of elasticity after being displaced;

The internal restraint shaping mechanism 10 includes a center mounting sleeve 1001, a polygonal sleeve 1002, a mounting outer band 1003, an elastic side band 1004, a bead filler 1005, and a reinforcing cord 1006;

The inside rubber protection layer 4 outside and the equal distance of fibre spacing layer 5 space department along the circumferencial direction evenly is provided with center installation sleeve 1001, center installation sleeve 1001 outside equidistance has evenly cup jointed polygon sleeve 1002, polygon sleeve 1002 outside corresponds fibre spacing layer 5 inside position department correspondence is provided with installation outer band 1003, it has elasticity side band 1004 to bond between polygon sleeve 1002 side and the installation outer band 1003 inboard, fibre spacing layer 5 inboard corresponds installation outer band 1003 both sides position department all inlays and has the joint strip 1005, the reinforcing fine rope 1006 is installed to joint strip 1005 inboard middle part, be provided with the clearance between adjacent two elasticity side bands 1004, joint strip 1005 lateral surface respectively with inside rubber protection layer 4, install outside band 1003 and fibre spacing layer 5 inboard between closely laminating, through the cooperation between inside constraint shaping mechanism 10 inside each subassembly, the whole atress condition inside the cable has been improved, through polygon sleeve 1002 can be with install outside band 1003 and elasticity side band 1004 inside the cable, simultaneously through the elastic structure design of elasticity side band 1004, alright quick reset after the external force that makes the cable receive is removed, the cable has effectively not received the external force's effect has been avoided the cable to resume, and the whole life-span structure that can't has improved and has improved the cable life span.

The working principle and the using flow of the invention are as follows: in the use process of the cable, the central conductor 1 is used for conducting electricity, the outer side of the central conductor 1 is directly protected through the inner polyethylene protective layer 2, the inner metal shielding layer 3 and the inner rubber protective layer 4, and the outer parts of the cables are synchronously limited and protected through the fiber limiting layer 5, the outer woven shielding layer 6 and the outer rubber protective layer 7;

When a cable is required to be installed, the cable to be installed is required to be pulled through the inside of an installation pipeline, the cable is temporarily fixed into the inside of the installation pipeline, then a connecting side pipe 811 at the side surface of a sealing end bag 810 at two ends of the installation section is connected with external liquid supply equipment, external filling liquid is led into the inside of the sealing end bag 810 through the connecting side pipe 811, filling liquid is added into the inside of a limiting expansion arc-shaped bag 802 through a central liquid guide flat groove 805 and a liquid guide side hole 806 in the inside of a connecting film 804, the filling liquid led into the sealing end bag 810 can be uniformly distributed into the inside of a group of limiting expansion arc-shaped bags 802, the pressure in the inside of the limiting expansion arc-shaped bag 802 is continuously increased and gradually and outwards expanded, the expansion of the limiting expansion arc-shaped bag 802 drives an elastic constraint sleeve 812 and an isolation rubber sleeve 813 synchronously outwards, the outside of the isolation rubber sleeve 813 is driven to be tightly attached to the inner wall of the installation pipeline in the process of outwards expanding, gaps of the side surface of the wear-resistant rubber piece 814 are filled through the wear-resistant rubber piece 814, and further the integrity of the outside structure of the cable is ensured, and the friction between the outside of the cable and the outside of the installation pipeline is uniformly distributed through the friction between the inner walls of the wear-resistant rubber piece 814 and the outside of the installation pipeline;

The heat can be naturally and outwards emitted in the use process of the cable, the independent expansion liquid bags 803 can be naturally expanded after absorbing heat, so that the bonding strength between the outer side of the cable and the inner wall of the installation pipeline is further improved, the heat in the cable can be uniformly transferred to the inside of the telescopic cylindrical bag 809 through the connection flat belts 807 and the heat conduction side pieces 808, the heat is absorbed by the telescopic cylindrical bag 809 and outwards expanded and stretched, and the central liquid guide flat grooves 805 and the liquid guide side holes 806 can be extruded and flattened through the expansion of the telescopic cylindrical bag 809, so that the inner space between the limiting expansion arc bags 802 is isolated, and further the filling liquid is effectively prevented from being concentrated in the bottom cable due to long-time vertical installation of the cable, so that the overall stability of the cable is improved;

When the outer side of the cable is required to be uniformly radiated, the heat-conducting arc sheets 903 can be uniformly arranged on the outer side of the external mounting sleeve 801 through the limiting long grooves 901 and the filling arc grooves 902, the telescopic liquid rods 907 are arranged inside the heat-conducting elastic bags 904 through the connecting elastic rubber blocks 906, the heat inside the cable can be uniformly conducted outwards through the heat-conducting arc sheets 903, the heat on the heat-conducting arc sheets 903 is continuously conducted outwards through inert gas inside the heat-conducting elastic bags 904, so that the heat inside the cable is radiated, the heat between two adjacent heat-conducting elastic bags 904 is axially conducted through the telescopic liquid rods 907, the heat distribution inside the heat-conducting elastic bags 904 is more uniform, and the friction between the telescopic liquid rods 907 and the heat-conducting elastic bags 904 is increased through the inner embedded sleeves 905;

When each component in the cable is required to be limited and supported, the polygonal sleeve 1002 and each component on the polygonal sleeve are installed on the side surface of the inner rubber protective layer 4 through the central installation sleeve 1001, the installation outer belt 1003 is installed on the side surface of the inner rubber protective layer 4 through the elastic side belt 1004, meanwhile, gaps in the fiber limiting layer 5 are filled through the filling rubber strips 1005, the integral structural strength of the inside of the filling rubber strips 1005 is increased through the reinforcing thin ropes 1006, when the cable is subjected to torsional bending extrusion, the stress applied to the cable is absorbed through the elastic side belt 1004, after the pressure on the outer side of the cable is removed, the cable shape can be reset through the elastic deformation of the elastic side belt 1004, and the integral form integrity of the cable is maintained.

Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. 35KV cable for generating electricity of wind power source, including three central conductor (1) that distribute along the circumferencial direction, its characterized in that: an outer rubber protective layer (7) is arranged on the outer side of the central conductor (1), a side expansion limiting mechanism (8) is arranged on the outer side of the outer rubber protective layer (7), and the side expansion limiting mechanism (8) comprises an outer mounting sleeve (801);

The outer side of the outer rubber protective layer (7) is tightly covered with an outer mounting sleeve (801), the outer side of the outer mounting sleeve (801) is uniformly provided with limiting expansion arc-shaped bags (802) along the circumferential direction at equal intervals, one side of the inner part of each limiting expansion arc-shaped bag (802) is adhered with an independent expansion liquid bag (803), two adjacent limiting expansion arc-shaped bags (802) are provided with connecting films (804), the middle part of the end face of each connecting film (804) is penetrated and provided with a central liquid guide flat groove (805), and two sides of the end face of each connecting film (804) are penetrated and provided with liquid guide side holes (806);

A connecting flat belt (807) is adhered to the middle part of the cambered surface of the inner ring of the connecting film (804), heat conduction side pieces (808) are adhered to two sides of the cambered surface of the inner ring of the connecting flat belt (807), and a telescopic cylindrical bag (809) is embedded and installed at the middle part of the cambered surface of the outer side of the connecting flat belt (807);

The end part of the limiting expansion arc-shaped bag (802) at the tail end is fixedly connected with a sealing end bag (810), the middle part of the outer side of the sealing end bag (810) is fixedly connected with a connecting side pipe (811), the outer side of the limiting expansion arc-shaped bag (802) is tightly covered with an elastic constraint sleeve (812), the outer side of the elastic constraint sleeve (812) is covered with an isolation rubber sleeve (813), wear-resistant rubber sheets (814) are uniformly and fixedly bonded on the outer side of the isolation rubber sleeve (813) along the circumferential direction at equal intervals, and an elastic filling sheet (815) is filled in a gap part between the corresponding wear-resistant rubber sheets (814) on the outer side of the isolation rubber sleeve (813);

The inner ring cambered surface of the limiting expansion arc-shaped bag (802) is tightly attached to the outer side of the external mounting sleeve (801), an expansion solution is filled in the independent expansion liquid bag (803), and two ends of the connecting film (804) are fixedly connected with the two corresponding limiting expansion arc-shaped bags (802) respectively;

the inside of the telescopic cylindrical bag (809) is filled with heated expansion liquid, and the diameter of the end face of the telescopic cylindrical bag (809) is larger than the width of the side face of the central liquid guide flat groove (805);

the side expansion limiting mechanism (8) is used for quickly and dynamically adjusting the outer diameter of the cable, so that after the cable is installed in the installation pipeline, the cable is fixed through friction between the outer side of the cable and the inner wall of the pipeline, and the stability of the installation of the cable is improved;

a gap telescopic heat transfer mechanism (9) is arranged on the outer side of the outer mounting sleeve (801), and the gap telescopic heat transfer mechanism (9) comprises a limiting long groove (901);

A limiting long groove (901) is formed in the outer side of the outer mounting sleeve (801) corresponding to the side position of the outer mounting sleeve (801), a filling arc groove (902) is uniformly formed in the inner arc surface of the limiting long groove (901), a heat conducting arc piece (903) is tightly filled in the filling arc groove (902), a heat conducting elastic bag (904) is arranged in the limiting long groove (901) corresponding to the outer side position of the heat conducting arc piece (903), inert gas is filled in the heat conducting elastic bag (904), inner embedded sleeves (905) are respectively arranged at two ends of the inner part of the heat conducting elastic bag (904), a connecting elastic rubber block (906) is arranged between two adjacent heat conducting elastic bags (904), and a telescopic liquid rod (907) is installed in the middle part of the inner side of the connecting elastic rubber block (906) corresponding to the inner embedded sleeves (905) in a penetrating mode;

the gap telescopic heat transfer mechanism (9) is used for dynamically conducting heat outside the cable, so that the heat outside the cable is distributed more uniformly, and the overall heat dissipation performance of the cable is improved;

An internal constraint shaping mechanism (10) is arranged on the outer side of the internal rubber protection layer (4), and the internal constraint shaping mechanism (10) comprises a central mounting sleeve (1001);

the novel fiber reinforced plastic composite material is characterized in that central installation sleeves (1001) are uniformly arranged at intervals between the outer side of the inner rubber protective layer (4) and the fiber limiting layer (5) along the circumferential direction at equal intervals, polygonal sleeves (1002) are uniformly sleeved at the outer sides of the central installation sleeves (1001) at equal intervals, outer installation belts (1003) are correspondingly arranged at positions, corresponding to the inner sides of the fiber limiting layer (5), of the outer sides of the polygonal sleeves (1002), elastic side belts (1004) are bonded between the side surfaces of the polygonal sleeves (1002) and the inner sides of the outer installation belts (1003), filling rubber strips (1005) are respectively embedded at positions, corresponding to the two sides of the outer installation belts (1003), of the inner sides of the filling rubber strips (1005) are provided with reinforcing thin ropes (1006) in a penetrating mode;

The internal constraint shaping mechanism (10) is used for isolating and supporting the inside of the cable, so that the internal rubber protection layer (4) can reset under the action of elasticity after being displaced.

2. The 35kV cable for power generation of a wind power source according to claim 1, wherein an inner polyethylene protective layer (2) is coated on the outer side of the central conductor (1), an inner metal shielding layer (3) is tightly wound on the outer side of the inner polyethylene protective layer (2), an inner rubber protective layer (4) is tightly coated on the outer side of the inner metal shielding layer (3), fiber limiting layers (5) are jointly coated on the outer sides of the three inner rubber protective layers (4), an outer woven shielding layer (6) is tightly coated on the outer sides of the fiber limiting layers (5), and an outer rubber protective layer (7) is coated on the outer sides of the outer woven shielding layers (6).

3. The 35kV cable for power generation of a wind power source according to claim 2, wherein two ends of the connecting flat belt (807) are fixedly connected with the corresponding end surfaces of the two corresponding limit expansion arc-shaped bags (802), and the inner arc surfaces of the connecting flat belt (807) and the heat conduction side piece (808) are tightly attached to the outer side of the external mounting sleeve (801).

4. The 35kV cable for power generation of wind power according to claim 2, wherein the wear-resistant rubber sheet (814) is made of hard rubber, wear-resistant particles are uniformly arranged on the outer side of the wear-resistant rubber sheet (814), and the outer cambered surface of the wear-resistant rubber sheet (814) is mutually flush with the outer cambered surface of the elastic filling sheet (815).

5. The 35kV cable for power generation of a wind power source according to claim 1, wherein the outer arc surface of the heat conducting arc piece (903) is flush with the inner arc surface of the limiting long groove (901), the outer arc surface of the heat conducting elastic bag (904) is flush with the outer arc surface of the external mounting sleeve (801), and two ends of the connecting elastic rubber block (906) are fixedly connected with the end surfaces of the two corresponding heat conducting elastic bags (904) respectively.

6. The 35kV cable for power generation of a wind power source according to claim 5, wherein the outer side of the inner embedded sleeve (905) is tightly attached to the telescopic liquid rod (907), and the telescopic liquid rod (907) is internally filled with a heat conductive solution.

7. The 35kV cable for power generation of a wind power source according to claim 1, wherein a gap is arranged between two adjacent elastic side belts (1004), and the outer side surface of the filling rubber strip (1005) is respectively tightly attached to the inner side of the inner rubber protection layer (4), the outer mounting belt (1003) and the inner side of the fiber limiting layer (5).