CN116031017A - High-strength cold-type cable for railway - Google Patents
High-strength cold-type cable for railway Download PDFInfo
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- CN116031017A CN116031017A CN202310314681.8A CN202310314681A CN116031017A CN 116031017 A CN116031017 A CN 116031017A CN 202310314681 A CN202310314681 A CN 202310314681A CN 116031017 A CN116031017 A CN 116031017A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention discloses a high-strength cold-type cable for a railway, which relates to the technical field of cables, wherein the surfaces of three cores are sleeved with inner insulating layers, the surfaces of the inner insulating layers are respectively wound with a shielding winding layer, the surfaces of the shielding winding layers are sleeved with inner insulating layers, the middle parts of the three cores are equidistantly provided with supporting shafts, and rubber soft columns are fixedly connected between the adjacent supporting shafts.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-strength cold region cable for a railway.
Background
The cable is an electric energy or signal transmission device, usually consists of several or several groups of wires, the cable is provided with a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like, and the cable is composed of single strand or multiple strands of wires and an insulating layer and is used for connecting circuits, electric appliances and the like, the city in cold region is a special city group distributed in the northern hemisphere, namely the city which brings adverse effect to urban life due to long winter and severe weather, the average temperature of 1 month is below-18 ℃, and most of cables for railways are along railway flat cables and are exposed in the air, and the requirement on the cables in cold environment is high;
however, the existing cable lacks an elastic supporting mechanism, the structural strength of the cable cannot be improved, and meanwhile, the cable has enough bending performance, so that electric energy is easy to break, and the cable is easy to collapse or bend when being subjected to external pressure, so that the cable is damaged.
Disclosure of Invention
The invention provides a high-strength cold-type cable for a railway, which can effectively solve the problems that the prior cable in the background technology lacks an elastic supporting mechanism, cannot improve the structural strength of the cable and has enough bending property, so that electric energy is easy to break, and the cable is easy to collapse or bend when being subjected to external pressure, so that the cable is damaged.
In order to achieve the above purpose, the present invention provides the following technical solutions: the high-strength cold-type cable for the railway comprises a core body, wherein supporting shafts are arranged in the middle of the three core bodies at equal intervals, rubber soft columns are connected between the adjacent supporting shafts, connecting columns are fixedly connected to the surfaces of the supporting shafts at equal intervals along the circumferential direction, and arc-shaped positioning blocks are connected to two sides of each connecting column;
the outer sides of the three cores are sleeved with shaping layers, annular grooves are formed in the surfaces of the shaping layers at equal intervals, clamping grooves are symmetrically formed in the annular grooves, arc-shaped supporting blocks are symmetrically embedded in the annular grooves, connecting clamping blocks are connected between the corresponding two ends of the arc-shaped supporting blocks in a fit mode, and an inner heat insulation layer is sleeved on the outer sides of the shaping layers;
the surface of the inner heat insulation layer is connected with an arc-shaped limiting block, the outer side of the inner heat insulation layer is sleeved with an outer heat insulation layer, heating wires are fixedly arranged on the inner side of the outer heat insulation layer at equal intervals, and bending wires are arranged in the middle of the heating wires at equal intervals;
the outside of the outer heat insulation layer is provided with a metal ring and a metal filament.
According to the technical proposal, the surfaces of the three cores are sleeved with the inner insulating layers, the surfaces of the inner insulating layers are wound with the shielding winding layers, the surfaces of the shielding winding layers are sleeved with the inner insulating layers,
filling a filler in a gap inside the shaping layer;
the outer insulating layer is sleeved on the outer side of the outer insulating layer, the outer insulating layer is fixedly arranged on the surface of the outer insulating layer, an antifreezing coating is smeared on the surface of the outer insulating layer, metal rings are fixedly embedded in the outer insulating layer at equal intervals in the axial direction, and metal filaments are fixedly installed in the outer insulating layer at equal intervals along the circumferential direction.
According to the technical scheme, the shielding winding layer is in a ribbon shape, the shielding winding layer is uniformly wound on the surface of the inner insulating layer, gaps cannot appear when the shielding winding layer is wound, and the three cores are distributed on the outer side of the supporting shaft at equal intervals in the circumferential direction.
According to the technical scheme, the number of the connecting columns is three, the connecting columns and the three cores are distributed in a staggered mode, the ends of the adjacent arc-shaped positioning blocks are mutually attached, and the inner insulating layers on the outer sides of the cores are in contact with the attached positions of the ends of the arc-shaped positioning blocks.
According to the technical scheme, the filler is formed by filling glass fiber ropes, and the filler is wrapped on the surfaces of the three inner isolation layers and the outer sides of the supporting shafts, the connecting columns and the arc-shaped positioning blocks.
According to the technical scheme, the inner side of the inner heat insulation layer is embedded in the outer side of the arc-shaped supporting blocks, the connecting clamping blocks are protruding blocks fixedly connected between the two arc-shaped supporting blocks, and the inner side of the connecting clamping blocks is embedded in the clamping grooves.
According to the technical scheme, the quantity of arc stopper and heater strip is six, the position of arc stopper and heater strip corresponds each other, the heater strip laminating is inboard in the arc of arc stopper, six arc grooves have been seted up to the inboard equidistance of outer insulating layer, and the arc groove wraps up heater strip and arc stopper.
According to the technical scheme, the inside equidistance fixed mounting of outer insulating layer has first shelves heating intercommunication circle, the inside of outer insulating layer is located first shelves heating intercommunication circle one side position department equidistance fixed mounting and has second shelves heating intercommunication circle, the equal fixedly connected with intercommunication department of the inboard of first shelves heating intercommunication circle and second shelves heating intercommunication circle, the inside of outer insulating layer and first shelves heating intercommunication circle and second shelves heating intercommunication circle correspond position department and set up the space, the inside of outer insulating layer and crooked silk correspond position department and set up flutedly.
According to the technical scheme, the metal filaments are fixedly connected with the metal rings, the metal rings and the metal filaments are mutually staggered to form a network to wrap the outer side of the outer isolation layer, and the metal rings and the metal filaments are both connected with the high-strength metal wires;
the three intercommunications on the inner side of the first-gear heating communication ring are respectively connected with the three heating wires in dislocation, and the three intercommunications on the inner side of the second-gear heating communication ring are respectively connected with the other three heating wires.
According to the technical scheme, the first-gear heating communication ring and the second-gear heating communication ring are positioned in the gap, the bending wire is the same heating guide wire as the heating wire, and the bending wire is embedded into the groove.
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 cable is provided with the supporting shaft, the rubber soft column, the connecting column, the arc-shaped positioning block, the shaping layer, the annular groove, the clamping groove, the arc-shaped supporting block and the connecting clamping block, the middle part of the cable is provided with the shaping supporting function through the cooperation of the supporting shaft and the rubber soft column, so that the cable is stronger in structural strength, the rubber soft column is soft and is a connecting piece between adjacent supporting shafts, the cable has certain bending property, the inner fracture caused by bending when snow pressure or cable installation and winding displacement is prevented, meanwhile, the connecting column and the arc-shaped positioning block are arranged on the outer side of the supporting shaft, a plurality of cores are separated, the cores are prevented from being mutually contacted, the cores are prevented from being mutually affected when being wound and staggered together to cause operation, and the cores are positioned when being installed, so that the cores are not dislocated, and great convenience is provided for subsequent division and connection;
shaping layer and filler are wrapped up the core for cable inside can not rock the dislocation, and the outside on shaping layer has the arc supporting shoe, and two arc supporting shoes are fixed the back card in the outside on shaping layer, have played the effect of supporting the protection to shaping layer, make shaping layer can not by flattening deformation, and then the cable inside the core can not warp, prevent to receive external pressure after the cable by flattening and lead to the core to warp dislocation unable normal use, arc supporting shoe and connection fixture block imbeds in the inside of ring channel and draw-in groove respectively, make arc supporting shoe and connection fixture block also can not misplace, the structural strength of cable has been improved.
2. Be provided with interior insulating layer, the arc stopper, heater strip and outer insulating layer, through the use of heater strip, heat the cable inside when weather is cold, improve the inside temperature of cable, make snow can not pile up at the cable surface, reduce the influence of external low temperature to inside core, make the cable can use under the cold region environment, prevent that the core can't electrically conductive influence normal use under the cold region ultralow temperature environment, the application range of cable has been improved, reduce the influence of external environmental factor to the cable, and the heater strip is located the inside of arc stopper, the arc stopper is fixed a position to the heater strip, make many heater strips all keep parallel can not the laminating of mutual staggering, interior insulating layer and outer insulating layer are with the heater strip parcel clamp in the centre, make the heat that its heater strip produced can not too much inwards transfer, prevent that the inside heat of cable from too much influencing the core normally electrically conducts, the heat forms the heat preservation in the middle of insulating layer and the outer insulating layer, the influence of the core of isolated low temperature to the cable inside.
3. Be provided with first gear heating intercommunication circle, second gear heating intercommunication circle, intercommunication department and space, through the cooperation of first gear heating intercommunication circle and second gear heating intercommunication circle use, utilize intercommunication department to be connected with three heater strips respectively, divide into two parts with six heater strips, and the heater strip start and the operation of two parts all mutually separate, can control the quantity of heater strip operation according to external environment demand, can start first gear heating intercommunication circle earlier when cooling for three heater strips start the operation, can carry out the heating heat preservation of first gear to the cable, wait until the temperature again drops by a wide margin after, start second gear heating intercommunication circle, make remaining three heater strips start the operation, start control respectively can reduce the waste of the energy, judge to start the heating according to the demand of ambient temperature change and cable heat preservation, the operation is more nimble with the use.
4. Be provided with the bending wire on the heater strip for the heater strip has certain extensibility, and when the cable received the external pressure influence under crooked, the part of bending wire can be prolonged and spread on the heater strip, and then the length of extension heater strip makes it can satisfy the crooked demand of cable, leads to the heater strip to be torn when preventing that the cable from being pressed or the installation winding displacement is crooked, and the bending wire all inlays in the inside of recess, makes the bending wire can not be fixed, has enough space to buckle smoothly when crooked.
5. Be provided with interior insulating layer, outer insulating layer, the metal coil, metal filament and anti-freezing coating, through the cooperation of interior insulating layer and outer insulating layer use, the effect of shielding has all been played in the inboard of cable and be close to the outside, reduce the influence between the core respectively or external environment is to the influence of cable, and metal coil and metal filament crisscross fixed connection each other, form the network parcel inside the outer insulating layer, the effect of protection fixed has been played to the inside of cable, the structural strength of cable has been improved, make the cable can not fracture easily, and the anti-freezing coating of the surface coating of outer insulating layer, the cold resistance of outer insulating layer has been improved, prevent that the cable surface from cracking at cold environment.
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 mounting structure of the outer insulation layer of the present invention;
FIG. 3 is a schematic view of the mounting structure of the eyelet of the present invention;
FIG. 4 is a schematic view of the mounting structure of the bending wire of the present invention;
FIG. 5 is a schematic view of the mounting structure of the second-stage heating communication ring of the present invention;
FIG. 6 is a schematic view of the mounting structure of the arc-shaped support block of the present invention;
FIG. 7 is a schematic view of the installation structure of the connecting fixture block of the present invention;
FIG. 8 is a schematic view of the mounting structure of the inner insulation layer of the present invention;
FIG. 9 is a schematic view of the mounting structure of the rubber soft column of the present invention;
reference numerals in the drawings: 1. a core; 2. an inner insulating layer; 3. shielding the winding layer; 4. an inner insulating layer; 5. a support shaft; 6. a connecting column; 7. an arc-shaped positioning block; 8. shaping the layer; 9. a filler; 10. an annular groove; 11. a clamping groove; 12. an arc-shaped supporting block; 13. connecting a clamping block; 14. an inner insulating layer; 15. an arc-shaped limiting block; 16. a heating wire; 17. bending the wire; 18. a first-gear heating communication ring; 19. a second-gear heating communication ring; 20. an intercommunication place; 21. an outer insulation layer; 22. a void; 23. a groove; 24. an outer insulating layer; 25. an outer insulating layer; 26. a metal ring; 27. a metal filament; 28. an anti-freezing coating; 29. rubber soft column.
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 to 9, the invention provides a technical scheme, the high-strength cold-type cable for railways, which comprises three core bodies 1, wherein the surfaces of the three core bodies 1 are sleeved with an inner insulating layer 2, the surfaces of the inner insulating layer 2 are wound with a shielding winding layer 3, the surfaces of the shielding winding layer 3 are sleeved with an inner insulating layer 4, the middle parts of the three core bodies 1 are equidistantly provided with supporting shafts 5, the shielding winding layer 3 is in a ribbon shape, the shielding winding layer 3 is uniformly wound on the surfaces of the inner insulating layer 2, gaps are not formed when the shielding winding layer 3 is wound, the three core bodies 1 are uniformly distributed on the outer sides of the supporting shafts 5 in the circumferential direction, rubber soft columns 29 are fixedly connected between adjacent supporting shafts 5, the surfaces of the supporting shafts 5 are fixedly connected with connecting columns 6 in the circumferential direction at equal intervals, two sides of the connecting columns 6 are fixedly connected with arc-shaped positioning blocks 7, the number of the connecting columns 6 is three, the three connecting columns 6 and the three cores 1 are distributed in a staggered way, the end parts of the adjacent arc-shaped positioning blocks 7 are mutually attached, the inner isolation layers 4 at the outer sides of the three cores 1 are in contact with the attachment parts of the end parts of the arc-shaped positioning blocks 7, the outer sides of the three cores 1 are sleeved with the shaping layers 8, the gaps inside the shaping layers 8 are filled with fillers 9, the fillers 9 are filled with glass fiber ropes, the fillers 9 are wrapped on the surfaces of the three inner isolation layers 4 and the outer sides of the supporting shafts 5, the connecting columns 6 and the arc-shaped positioning blocks 7, annular grooves 10 are formed in the surfaces of the shaping layers 8 at equal intervals, clamping grooves 11 are symmetrically formed in the annular grooves 10, arc-shaped supporting blocks 12 are symmetrically embedded in the inner parts of the annular grooves 10, connecting clamping blocks 13 are fixedly connected between the end parts of the corresponding two arc-shaped supporting blocks 12 in an attached mode, the outer sides of the shaping layers 8 are sleeved with inner heat insulation layers 14, the inner side of the inner heat insulation layer 14 is embedded into the outer side of the arc-shaped supporting block 12, the connecting clamping blocks 13 are protruding blocks in the process of fixedly connecting the two arc-shaped supporting blocks 12, the inner sides of the connecting clamping blocks 13 are embedded into the clamping grooves 11, the middle of a cable is subjected to a shaping supporting effect through the matching of the supporting shafts 5 and the rubber soft columns 29, the cable is stronger in structural strength, the rubber soft columns 29 are soft and are connecting pieces between the adjacent supporting shafts 5, the cable has certain bending performance, the inner fracture caused by bending when snow pressure or cables are installed and arranged, meanwhile, the connecting columns 6 and the arc-shaped positioning blocks 7 are arranged on the outer sides of the supporting shafts 5, the cores 1 are separated, the cores 1 cannot be contacted with each other, the cores 1 are prevented from being wound and staggered together to cause mutual influence in operation, and the cores 1 are positioned in the installation process, so that the cores 1 cannot be dislocated, and great convenience is provided for the subsequent cutting and connecting;
the shaping layer 8 and the filler 9 wrap the core body 1, so that the cable cannot shake and misplace, an arc-shaped supporting block 12 is arranged on the outer side of the shaping layer 8, the two arc-shaped supporting blocks 12 are clamped on the outer side of the shaping layer 8 after being fixed, the shaping layer 8 is supported and protected, the shaping layer 8 cannot be flattened and deformed, the core body 1 in the cable cannot be deformed, the cable cannot be flattened to cause the deformation and misplacement of the core body 1 to be used normally after being subjected to external pressure, and the arc-shaped supporting blocks 12 and the connecting clamping blocks 13 are respectively embedded into the annular grooves 10 and the clamping grooves 11, so that the arc-shaped supporting blocks 12 and the connecting clamping blocks 13 cannot misplace, and the structural strength of the cable is improved;
the surface of the inner heat insulation layer 14 is fixedly connected with an arc-shaped limiting block 15 along the circumferential direction at equal intervals, the outer side of the inner heat insulation layer 14 is sleeved with an outer heat insulation layer 21, the inner side of the outer heat insulation layer 21 is fixedly provided with heating wires 16 at equal intervals, the number of the arc-shaped limiting blocks 15 and the number of the heating wires 16 are six, the positions of the arc-shaped limiting blocks 15 and the positions of the heating wires 16 correspond to each other, the heating wires 16 are attached to the arc inner sides of the arc-shaped limiting blocks 15, six arc-shaped grooves are formed in the inner sides of the outer heat insulation layer 21 at equal intervals, the arc-shaped grooves wrap the heating wires 16 and the arc-shaped limiting blocks 15, the middle of the heating wires 16 is provided with bending wires 17 at equal intervals, the outer side of the outer heat insulation layer 21 is sleeved with an outer insulation layer 24, the inner insulation layer 4 and the outer insulation layer 24 are made of insulating soft rubber, the inner part of a cable is heated in the cold weather, the inner part of the cable is heated by the heating wires 16, the temperature of the cable is increased, and snow cannot be accumulated on the surface of the cable, the influence of external low temperature on the internal core body 1 is reduced, the cable can be used in cold regions, the core body 1 is prevented from being incapable of conducting in the cold region ultra-low temperature environment to influence normal use, the use range of the cable is improved, the influence of external environment factors on the cable is reduced, the heating wires 16 are positioned in the arc-shaped limiting blocks 15, the arc-shaped limiting blocks 15 position the heating wires 16, the heating wires 16 are kept parallel and can not be mutually staggered and laminated, the internal heat insulation layer 14 and the external heat insulation layer 21 wrap the heating wires 16 in the middle, the heat generated by the heating wires 16 is prevented from being transmitted inwards excessively, the heat in the cable is prevented from forming a heat preservation layer in the middle of the internal heat insulation layer 14 and the external heat insulation layer 21, the influence of external low temperature on the core body 1 in the cable is isolated, the inner heat insulation layer 14 and the outer heat insulation layer 21 are made of glass fiber mats;
the surface of the outer insulating layer 24 is fixedly provided with the outer insulating layer 25, metal rings 26 are fixedly embedded in the outer insulating layer 25 at equal intervals in the axial direction, metal filaments 27 are fixedly embedded in the outer insulating layer 25 along the circumferential direction, the metal filaments 27 are fixedly connected with the metal rings 26, the metal rings 26 and the metal filaments 27 are mutually staggered to form a network to wrap the outer side of the outer insulating layer 24, the metal rings 26 and the metal filaments 27 are both coated with an anti-freezing coating 28 together with high-strength metal wires, the inner insulating layer 2 and the outer insulating layer 25 are matched for use, the effect of shielding is achieved on the inner side and the outer side close to the outer side of a cable, the influence of the external environment on the cable is reduced, the metal rings 26 and the metal filaments 27 are mutually staggered and fixedly connected to form the network to wrap the inner side of the outer insulating layer 25, the effect of protecting and fixing is achieved on the inner side of the cable, the cable is improved in structural strength, the cable is prevented from being easily broken, the anti-freezing coating 28 is coated on the surface of the outer insulating layer 25, the cold-resistant performance of the outer insulating layer 25 is improved, and the cable surface is prevented from cracking in the cold environment;
the first grade heating communicating ring 18 is fixedly arranged in the outer heat insulating layer 21 at equal intervals, the second grade heating communicating ring 19 is fixedly arranged in the outer heat insulating layer 21 at equal intervals at the position of one side of the first grade heating communicating ring 18, the intercommunicating parts 20 are fixedly connected with the inner sides of the first grade heating communicating ring 18 and the second grade heating communicating ring 19, three intercommunicating parts 20 at the inner sides of the first grade heating communicating ring 18 are respectively connected with the dislocated three heating wires 16, the three intercommunicating parts 20 at the inner sides of the second grade heating communicating ring 19 are respectively connected with the other three heating wires 16, the first grade heating communicating ring 18 and the second grade heating communicating ring 19 are all conductive metals, a gap 22 is formed between the inner part of the outer heat insulating layer 21 and the position corresponding to the first grade heating communicating ring 18 and the second grade heating communicating ring 19, a groove 23 is formed between the inner part of the outer heat insulating layer 21 and the position corresponding to the bending wire 17, the first-grade heating communication ring 18 and the second-grade heating communication ring 19 are positioned in the gap 22, the bending wire 17 is a heating guide wire identical to the heating wire 16, the bending wire 17 is embedded into the groove 23, the inner heat insulation layer 14 and the outer heat insulation layer 21 are made of heat-resistant insulating materials, the first-grade heating communication ring 18 and the second-grade heating communication ring 19 are matched for use, the intercommunicating part 20 is utilized to be respectively connected with the three heating wires 16 to divide the six heating wires 16 into two parts, the starting and the running of the heating wires 16 of the two parts are mutually separated, the running quantity of the heating wires 16 can be controlled according to the external environment requirement, the first-grade heating communication ring 18 can be started firstly when the temperature is reduced, the three heating wires 16 are started to run, the first-grade heating and heat preservation can be carried out on a cable, after the temperature is greatly reduced again, the second-grade heating communication ring 19 is started, the rest three heating wires 16 are started to run, the waste of energy sources can be reduced by respectively starting control, the starting heating is judged according to the requirements of environmental temperature change and cable heat preservation, and the operation and the use are more flexible;
be provided with the bending wire 17 on heater strip 16 for heater strip 16 has certain extensibility, and when the cable received the external pressure influence to bend, the part of bending wire 17 on heater strip 16 can prolong to expand, and then the length of extension heater strip 16 makes it can satisfy the crooked demand of cable, prevents that the cable from being pressed or lead to heater strip 16 to be torn when installing the winding displacement crooked, and the inside at recess 23 is all inlayed to bending wire 17, makes bending wire 17 can not be fixed, has sufficient space to buckle smoothly when crooked.
The working principle and the using flow of the invention are as follows: firstly, the outer side of a core body 1 is sleeved with an inner insulating layer 2, so that the independent insulation of the core bodies 1 is kept, the mutual influence is avoided, a shielding winding layer 3 is uniformly wound on the outer side of the inner insulating layer 2, the core body 1 is wrapped and isolated, an inner insulating layer 4 is positioned on the outer side of the shielding winding layer 3, a fixed pressing effect is achieved on the shielding winding layer 3, the shielding winding layer 3 cannot be loosened, then three connecting columns 6 and six arc-shaped positioning blocks 7 form three arc-shaped grooves on the outer side of a supporting shaft 5, the three core bodies 1 are respectively aligned with the three arc-shaped grooves, the arc-shaped positioning blocks 7 and the connecting columns 6 isolate the three core bodies 1, so that the three core bodies cannot be mutually contacted and misplaced when being installed and used, the plurality of supporting shafts 5 are connected through soft rubber soft columns 29, when a cable is bent, the soft rubber soft columns 29 can be bent towards the bending direction, and when the cable is bent, the bending wire 17 can be stretched in the groove 23, so that the heating wire 16 can be prolonged, and the heating wire 16 can be prevented from being broken when the cable is bent;
the ends of the corresponding arc-shaped supporting blocks 12 are attached, and the connecting fixture blocks 13 are arranged at the connecting positions, so that the two arc-shaped supporting blocks 12 are clamped at the outer sides of the shaping layer 8, the arc-shaped supporting blocks 12 and the connecting fixture blocks 13 are respectively embedded in the annular groove 10 and the clamping groove 11, the arc-shaped supporting blocks 12 play a role in supporting and stabilizing the cable, so that the cable cannot be deformed when external pressure is pressed on the cable, meanwhile, the metal rings 26 and the metal filaments 27 are fixedly connected in a staggered mode to form grids in the outer insulating layer 25, the cable is protected, the structural strength of the cable is further improved, the cable cannot be easily broken, and an anti-freezing coating 28 is formed by anti-freezing coating sprayed on the surface of the outer insulating layer 25, so that the cable surface cannot be broken in a low-temperature environment;
when the temperature of the cable is reduced to a certain extent in a cold environment and exceeds the low temperature range which can be borne by the core body 1 in the cable, the normal power transmission of the cable can be influenced, a worker starts and electrifies the first-grade heating communication ring 18, the first-grade heating communication ring 18 is connected with three heating wires 16 through an intercommunication part 20, the three heating wires 16 are started to generate heat, the three heating wires 16 are equidistantly distributed in the cable, the generated heat can form an insulating layer to isolate the low temperature of the external environment, the core body 1 in the cable is protected, if the temperature is reduced to a certain extent again, the second-grade heating communication ring 19 is started and electrifies, the second-grade heating communication ring 19 is connected with the other three heating wires 16 through the intercommunication part 20, so that the rest three heating wires 16 are started, the six heating wires 16 run simultaneously, the generated heat forms a stronger heat preservation layer, the core body 1 can not be influenced by the low temperature of the external environment, the electric energy can be normally transmitted, the three heating wires 16 started firstly and the three heating wires 16 started later are distributed in a staggered way, the heat generated by the two-time starting is uniformly distributed in the cable, uneven heating can not be caused, the heating wires 16 are limited by the arc limiting block 15, the heating wires 16 are more convenient to install and move along the arc limiting block 15, the heating wires 16 can not touch each other, meanwhile, the heating wires 16, the first-gear heating communication ring 18 and the second-gear heating communication ring 19 are all wrapped in the middle of the inner heat insulation layer 14 and the outer heat insulation layer 21, the generated heat can not be excessively transmitted inwards to influence the running of the core body 1, the heat can not be excessively transmitted outwards, so that the heat is dissipated too quickly to cause waste.
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 (10)
1. The utility model provides a high strength cold electric cable for railway, includes core (1), its characterized in that: the middle parts of the three cores (1) are equidistantly provided with supporting shafts (5), rubber soft columns (29) are connected between the adjacent supporting shafts (5), the surfaces of the supporting shafts (5) are fixedly connected with connecting columns (6) along the circumferential direction at equal intervals, and two sides of each connecting column (6) are connected with arc-shaped positioning blocks (7);
the three outer sides of the core body (1) are sleeved with shaping layers (8), annular grooves (10) are formed in the surfaces of the shaping layers (8) at equal intervals, clamping grooves (11) are symmetrically formed in the annular grooves (10), arc-shaped supporting blocks (12) are symmetrically embedded in the annular grooves (10), connecting clamping blocks (13) are connected between the ends of the corresponding two arc-shaped supporting blocks (12) in a fit mode, and an inner heat insulation layer (14) is sleeved on the outer sides of the shaping layers (8);
the surface of the inner heat insulation layer (14) is connected with an arc-shaped limiting block (15), an outer heat insulation layer (21) is sleeved on the outer side of the inner heat insulation layer (14), heating wires (16) are fixedly arranged on the inner side of the outer heat insulation layer (21) at equal intervals, and bending wires (17) are arranged in the middle of the heating wires (16) at equal intervals;
the outer side of the outer heat insulation layer (21) is provided with a metal ring (26) and metal filaments (27).
2. The high-strength cold-zone cable for railways according to claim 1, wherein the surfaces of the three cores (1) are sleeved with inner insulating layers (2), the surfaces of the inner insulating layers (2) are wound with shielding winding layers (3), the surfaces of the shielding winding layers (3) are sleeved with inner insulating layers (4),
a filler (9) is filled in the gap inside the shaping layer (8);
the outer insulating layer (24) has been cup jointed in the outside of outer insulating layer (21), the fixed surface mounting of outer insulating layer (24) has outer insulating layer (25), the surface of outer insulating layer (25) is paintd and is had anti-freezing coating (28), metal ring (26) are installed in the inside of outer insulating layer (25) in axial equidistance fixed embedding, the inside of outer insulating layer (25) is along circumference direction equidistance embedding fixed mounting have metal filament (27).
3. The high-strength cold-zone cable for railway according to claim 2, wherein the shielding winding layer (3) is in a ribbon shape, the shielding winding layer (3) is uniformly wound on the surface of the inner insulating layer (2), no gap is formed when the shielding winding layer (3) is wound, and the three cores (1) are equidistantly distributed on the outer side of the supporting shaft (5) in the circumferential direction.
4. The high-strength cold-zone cable for railways according to claim 2, wherein the number of the connecting columns (6) is three, the three connecting columns (6) and the three cores (1) are distributed in a staggered manner, the end parts of the adjacent arc-shaped positioning blocks (7) are mutually attached, and the inner isolation layers (4) on the outer sides of the three cores (1) are in contact with the attaching parts of the end parts of the arc-shaped positioning blocks (7).
5. The high-strength cold-zone cable for railways according to claim 2, wherein the filler (9) is formed by filling glass fiber ropes, and the filler (9) is wrapped on the surfaces of the three inner insulating layers (4) and the outer sides of the supporting shafts (5), the connecting columns (6) and the arc-shaped positioning blocks (7).
6. The high-strength cold-zone cable for railways according to claim 2, wherein the outer side of the arc-shaped supporting blocks (12) is embedded into the inner side of the inner heat insulation layer (14), the connecting clamping blocks (13) are protruding blocks in the process of fixedly connecting the two arc-shaped supporting blocks (12), and the inner sides of the connecting clamping blocks (13) are embedded into the clamping grooves (11).
7. The high-strength cold-zone cable for railways according to claim 2, wherein the number of the arc-shaped limiting blocks (15) and the number of the heating wires (16) are six, the positions of the arc-shaped limiting blocks (15) and the positions of the heating wires (16) correspond to each other, the heating wires (16) are attached to the inner side of the arc-shaped limiting blocks (15), six arc-shaped grooves are formed in the inner side of the outer heat insulation layer (21) at equal intervals, and the arc-shaped grooves wrap the heating wires (16) and the arc-shaped limiting blocks (15).
8. The high-strength cold-zone cable for railways according to claim 1, wherein first-grade heating communication rings (18) are fixedly installed inside the outer heat insulation layer (21) at equal intervals, second-grade heating communication rings (19) are fixedly installed inside the outer heat insulation layer (21) at equal intervals at one side of the first-grade heating communication rings (18), communicating parts (20) are fixedly connected inside the first-grade heating communication rings (18) and the second-grade heating communication rings (19), gaps (22) are formed in positions, corresponding to the first-grade heating communication rings (18) and the second-grade heating communication rings (19), of the inner part of the outer heat insulation layer (21), and grooves (23) are formed in positions, corresponding to bending wires (17), of the inner part of the outer heat insulation layer (21).
9. The high-strength cold-zone cable for railway according to claim 8, wherein the metal filaments (27) are fixedly connected with the metal rings (26), the metal rings (26) and the metal filaments (27) are mutually staggered to form a network to be wrapped on the outer side of the outer insulating layer (24), and the metal rings (26) and the metal filaments (27) are both connected with the high-strength metal filaments;
the three intercommunicating parts (20) on the inner side of the first-gear heating communication ring (18) are respectively connected with the three heating wires (16) which are staggered, and the three intercommunicating parts (20) on the inner side of the second-gear heating communication ring (19) are respectively connected with the other three heating wires (16).
10. The high-strength cold-zone cable for railway according to claim 8, wherein the first-stage heating communication ring (18) and the second-stage heating communication ring (19) are positioned inside the gap (22), the bending wire (17) is a heating guide wire identical to the heating wire (16), and the bending wire (17) is embedded inside the groove (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310314681.8A CN116031017B (en) | 2023-03-29 | 2023-03-29 | High-strength cold-type cable for railway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310314681.8A CN116031017B (en) | 2023-03-29 | 2023-03-29 | High-strength cold-type cable for railway |
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| Publication Number | Publication Date |
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| CN116031017A true CN116031017A (en) | 2023-04-28 |
| CN116031017B CN116031017B (en) | 2023-05-26 |
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| CN202310314681.8A Active CN116031017B (en) | 2023-03-29 | 2023-03-29 | High-strength cold-type cable for railway |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393218A (en) * | 2023-11-15 | 2024-01-12 | 飞鹏电缆有限公司 | Environment-friendly nontoxic flexible fireproof cable and manufacturing method thereof |
| CN117612775A (en) * | 2023-12-06 | 2024-02-27 | 哈尔滨交联电力电缆制造有限公司 | Cable suitable for photovoltaic power generation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200029394A1 (en) * | 2018-07-19 | 2020-01-23 | Schluter Systems, LP | Heating Cable |
| CN115206599A (en) * | 2022-09-16 | 2022-10-18 | 亚星线缆集团有限公司 | Medium-voltage fire-resistant cable and preparation method thereof |
| CN217606603U (en) * | 2022-06-14 | 2022-10-18 | 江苏宏飞光电集团有限公司 | Flexible fireproof cable with good bending resistance |
-
2023
- 2023-03-29 CN CN202310314681.8A patent/CN116031017B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200029394A1 (en) * | 2018-07-19 | 2020-01-23 | Schluter Systems, LP | Heating Cable |
| CN217606603U (en) * | 2022-06-14 | 2022-10-18 | 江苏宏飞光电集团有限公司 | Flexible fireproof cable with good bending resistance |
| CN115206599A (en) * | 2022-09-16 | 2022-10-18 | 亚星线缆集团有限公司 | Medium-voltage fire-resistant cable and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393218A (en) * | 2023-11-15 | 2024-01-12 | 飞鹏电缆有限公司 | Environment-friendly nontoxic flexible fireproof cable and manufacturing method thereof |
| CN117393218B (en) * | 2023-11-15 | 2024-03-26 | 飞鹏电缆有限公司 | Environment-friendly nontoxic flexible fireproof cable and manufacturing method thereof |
| CN117612775A (en) * | 2023-12-06 | 2024-02-27 | 哈尔滨交联电力电缆制造有限公司 | Cable suitable for photovoltaic power generation |
| CN117612775B (en) * | 2023-12-06 | 2024-05-07 | 哈尔滨交联电力电缆制造有限公司 | Cable suitable for photovoltaic power generation |
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| Publication number | Publication date |
|---|---|
| CN116031017B (en) | 2023-05-26 |
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