CN116072338B - Submarine ultrahigh-voltage cable with temperature measuring unit - Google Patents
Submarine ultrahigh-voltage cable with temperature measuring unit Download PDFInfo
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- CN116072338B CN116072338B CN202310353879.7A CN202310353879A CN116072338B CN 116072338 B CN116072338 B CN 116072338B CN 202310353879 A CN202310353879 A CN 202310353879A CN 116072338 B CN116072338 B CN 116072338B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/14—Submarine cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/428—Heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention discloses a submarine ultrahigh voltage cable with a temperature measuring unit, which relates to the technical field of ultrahigh voltage cables and comprises a central oil duct, wherein the outer side of the central oil duct is sequentially coated with a power transmission wire, a polyethylene conductor shield, an insulating shield, a protective lead sleeve, a CPVC lining layer, a fiber reinforcing layer, a protective inner layer, a protective middle layer and a protective outer layer from inside to outside.
Description
Technical Field
The invention relates to the technical field of ultrahigh voltage cables, in particular to a submarine ultrahigh voltage cable with a temperature measuring unit.
Background
Along with the rapid development of economic construction, the high-voltage long-distance large-area cable is increasingly widely applied, the ultra-high-voltage cable refers to a cable with a voltage transmission range of 275kV to 800kV, the ultra-high-voltage cable is generally used for ultra-high-voltage power transmission, the ultra-high-voltage cable is used as an important carrier for transmitting power, the action range of the ultra-high-voltage cable is large, and once the ultra-high-voltage cable fails, the transmission of power is stopped, the affected range is also large, so that the ultra-high-voltage cable needs to be ensured to stably and safely operate continuously;
however, in the use process of the existing ultra-high voltage cable, due to the lack of a corresponding convenience temperature detection unit, the phenomenon that the ultra-high voltage cable is damaged due to the fact that the ultra-high voltage cable cannot be found in time when abnormal heating occurs, and the original problem is continuously updated, so that the maintenance cost of the ultra-high voltage cable is increased, and the use safety of the ultra-high voltage cable is reduced.
Disclosure of Invention
The invention provides a submarine ultrahigh voltage cable with a temperature measuring unit, which can effectively solve the problems that the ultrahigh voltage cable cannot be found in time when the ultrahigh voltage cable generates abnormal heat due to the lack of a corresponding convenience temperature detecting unit in the use process of the ultrahigh voltage cable, the original small problem is continuously updated to cause the damage of the ultrahigh voltage cable, the maintenance cost of the ultrahigh voltage cable is increased, and the use safety of the ultrahigh voltage cable is reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions: the submarine ultrahigh voltage cable with the temperature measuring unit comprises a central oil duct, wherein the outside of the central oil duct is sequentially coated with a power transmission wire, a polyethylene conductor shield, an insulation shield, a protective lead sleeve, a CPVC inner liner layer, a fiber reinforced layer, a protective inner layer, a protective middle layer and a protective outer layer from inside to outside;
an inner groove is formed between the protective inner layer and the protective middle layer, an edge arc groove is formed between the protective inner layer and the protective middle layer, clamping silicon rubber strips are filled in the inner groove, a circular mounting groove is formed between the two clamping silicon rubber strips, mounting side holes are formed in the side faces of the clamping silicon rubber strips, bonding flat grooves are formed in the two sides of the clamping silicon rubber strips, and clamping arc grooves are uniformly formed in the side faces of the clamping silicon rubber strips at equal intervals corresponding to the positions inside the bonding flat grooves;
the laminating flat groove is inside to bond has the laminating flat bar, laminating flat bar one side is provided with spacing protruding grain, inside interlude of centre gripping silica gel strip has fiber signal wire, fiber signal wire outside is connected with temperature sensor, two clamping limit groove has all been seted up to centre gripping silica gel strip side, the equal joint in centre gripping silica gel strip both sides has the heat conduction arc board.
Preferably, two align between the centre gripping silica gel strip, and closely laminate each other between two centre gripping silica gel strips, closely laminate between laminating flat bar inboard and the laminating flat groove inner wall, and laminate between flat bar side and the centre gripping silica gel strip side flush each other, spacing protruding grain corresponds each other and looks joint each other with joint arc groove position, and closely slide the laminating between spacing protruding grain outside and the joint arc groove inner wall.
Preferably, the temperature sensor outside is closely laminated with the installation side opening inner wall between, and flushes each other between temperature sensor terminal surface and the centre gripping silica gel strip side, fibre signal wire tip and external control ware interconnect, the heat conduction arc board outside is located limit arc inslot portion.
Preferably, storage round boxes are uniformly arranged at the middle position of one side of the outer part of the protection layer at equal intervals, clamping arc boxes are fixedly connected to the positions of two sides of each storage round box, corresponding to the outer side of the outer part of the protection layer, two adjacent storage round box sides are fixedly connected through a data connecting belt, a data connecting flexible wire is fixedly connected to one side of the inner part of each clamping arc box, a suspension sensor is fixedly connected to the position of the tail end of each data connecting flexible wire, corresponding to the top of each storage round box, a buoyancy round block is sleeved on the outer side of each suspension sensor, and a storage guide groove is formed in the middle of the bottom surface of each buoyancy round block in a penetrating manner;
the inner side of the clamping arc-shaped box is symmetrically and fixedly bonded with a sealed telescopic airbag at one end close to the storage round box, the tail ends of the two sealed telescopic airbags are jointly bonded with a connecting tail piece, and a wire winding belt is fixedly connected to the middle part of one side of the connecting tail piece at the position corresponding to the position between the two sealed telescopic airbags.
Preferably, the buckle structure is constituteed jointly to round receiver and centre gripping arc box, and closely laminates between round receiver bottom surface and the centre gripping arc box inboard, the temperature of detectable sea water of suspension sensor.
Preferably, the buoyancy circle piece is made by light anti-corrosion material, and the top surface shape of buoyancy circle piece is the same with the terminal surface shape of holding circle box inner chamber, sealed flexible gasbag can be followed the centre gripping arc box inner chamber and is stretched out and drawn back, two the equal activity of receipts line area end cup joints in the data connection patchcord outside.
Preferably, the protection middle layer and the protection outer layer directly run through along the circumferencial direction equidistance and have seted up outer channel, the protection outer layer outside corresponds outer channel outside position department along circumferencial direction equidistance and has seted up the arc draw-in groove, the inside packing of outer channel has the protection flexible rubber tube, the equidistant even bonding in protection flexible rubber tube one side middle part has a installation side section of thick bamboo, the inside one side of installation side section of thick bamboo bonds and has had the transmission flat ribbon, the inside equidistant fixedly connected with luminescent light pearl that corresponds installation side section of thick bamboo tip position department in transmission flat ribbon one side middle part, the inside packing of transmission flat ribbon one side position department of protection flexible rubber tube has spacing adhesive tape, the location circular slot has all been seted up to spacing adhesive tape side corresponds installation side section of thick bamboo tip position department joint has transparent round box, transparent round box inner wall outside bonds and has frivolous net piece, the inside bonding of arc draw-in groove has transparent isolation strip.
Preferably, the outer side of the protective flexible rubber tube is tightly attached to the inner wall of the arc-shaped clamping groove, and the end part of the power transmission flat belt is connected with external power supply equipment.
Preferably, the transparent round box is internally filled with supersaturated sodium acetate solution, and a large amount of sodium acetate crystals exist in the transparent round box at normal temperature, and the outer cambered surface of the transparent isolating strip and the outer cambered surface of the protective layer are mutually flush.
Preferably, the round storage box and the arc clamping box can be freely disassembled according to requirements, and the output ends of the temperature sensor and the suspension sensor are connected with an external receiving device.
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 installation mode of the fiber signal wire and the temperature sensor is optimized through the mutual matching between the clamping silica gel strips and the components connected with the clamping silica gel strips, the structural strength of splicing between the two clamping silica gel strips is effectively improved through the mutual matching between the bonding flat grooves, the clamping arc grooves, the bonding flat strips and the limiting convex particles, the clamping silica gel strips can be tightly coated outside the fiber signal wire and the temperature sensor, the fiber signal wire and the temperature sensor can be protected through the clamping silica gel strips, the limiting clamping is carried out on the temperature sensor through the installation side holes, the integral structural strength of the fiber signal wire and the temperature sensor is effectively improved, the resistance of the fiber signal wire and the temperature sensor to external mechanical impact is improved, the fiber signal wire and the temperature sensor can be normally used in the operation process of the ultra-high voltage cable, and the operation stability of the fiber signal wire and the temperature sensor is improved;
simultaneously, utilize centre gripping silica gel strip and the strong characteristic of heat conduction arc board heat conductivity, make the inside heat realization evenly distributed of superhigh pressure cable in the operation in-process, thereby effectually prevent the inside heating point of superhigh pressure cable and keep away from the phenomenon that can't detect fast when temperature sensor happens, and then effectually enlarged temperature sensor's detection range, improved the inside temperature detection's of superhigh pressure cable accuracy, when making the inside unusual heating phenomenon that appears of superhigh pressure cable, can pass through the cooperation of fiber signal wire and temperature sensor, realized the inside quick detection and the location of heating point to superhigh pressure cable, and then make maintainer can in time maintain when the superhigh pressure cable appears temperature anomaly, the effectual maintenance cost who reduces superhigh pressure cable.
2. The installation process of the suspension sensor is optimized through the mutual matching of the storage round box, the clamping arc box and each component on the storage round box, each component is clamped to the outer side of the protection layer through the clamping structure formed by the storage round box and the clamping arc box, and the expansion characteristic of the sealed expansion air bag is utilized, so that when the clamping arc box is positioned above the water surface, the connecting tail piece and the wire collecting belt are propped to one side far away from the storage round box through the expansion of the sealed expansion air bag, the data connecting flexible wire is pulled and pulled into an S shape through the wire collecting belt, the data connecting flexible wire is further stored in the two clamping arc boxes, the buoyancy round block can be further stored in the storage round box, the phenomenon that the data connecting flexible wire and the suspension sensor are mutually wound in the operation process of the storage round box is further effectively prevented, the sealed expansion air bag is gradually compressed in the sinking process through water pressure, the data connecting flexible wire and the suspension sensor are gradually released in the sinking process of the ultrahigh voltage cable, and the installation convenience of the ultrahigh voltage cable peripheral temperature measuring element is further effectively improved;
meanwhile, through the mutual coordination between the data connection flexible wire and the suspension sensor, the characteristic that the data connection flexible wire and the suspension sensor can shake freely along with water flow is utilized, and then the environment temperature of the water area outside the ultra-high voltage cable can be detected through the suspension sensor, the data detected by the suspension sensor and the temperature sensor can be compared, whether the abnormal high temperature of the ultra-high voltage cable is caused by internal factors or external factors can be rapidly determined, so that an overhaul scheme can be remotely formulated by an overhaul staff, meanwhile, when the periphery of the ultra-high voltage cable is impacted by foreign objects or attacked by fishes, the abnormal damage position can be rapidly positioned through the damage of the data connection flexible wire and the suspension sensor, and then the overhaul staff can timely detect the outer side of the ultra-high voltage cable at the damaged position of the data connection flexible wire and the suspension sensor, so that the tiny damage on the periphery of the ultra-high voltage cable can not be timely removed to develop into serious damage, and the use safety of the ultra-high voltage cable is further improved.
3. The flexible hose and the installation side barrel are protected, and all components in the installation side barrel are matched with each other, so that the positioning process of a maintainer on a heating point is optimized, the light-emitting lamp beads and the transparent round box are installed and limited through the flexible hose and the installation side barrel, so that the alignment between the light-emitting lamp beads and the transparent round box can be always kept, the end part of the installation side barrel is protected through the transparent isolating strip, the external smooth characteristic of the transparent isolating strip is adopted, the dirt of the water bottom is effectively prevented from being firmly attached to the side surface of the transparent isolating strip, the transparent state of the outer side of the transparent isolating strip can be recovered only by simple flushing, and then the light emitted by the light-emitting lamp beads can smoothly penetrate the transparent round box, the light mesh and the transparent isolating strip and be observed by the maintainer, so that the positioning flow process of the heating point is ensured to be normally carried out;
meanwhile, the characteristics of supersaturated sodium acetate solution filled in the transparent round box are utilized, so that the solubility of sodium acetate in the transparent round box is different in different temperature environments, the sodium acetate crystallization position in the transparent round box is guided through the light and thin net sheet, the light transmittance of the transparent round box in a low temperature area is reduced under the influence of sodium acetate crystallization, sodium acetate in the transparent round box in a high temperature area is completely dissolved in the solution, the transparent round box in the high temperature area has good light transmittance, the brightness of a luminous lamp bead in the high temperature area observed by an maintainer from the outside of an ultrahigh voltage cable is higher than that of the low temperature area, and the heating point is rapidly positioned by observing the light brightness generated by the luminous lamp bead, so that the convenience of the ultrahigh voltage cable maintenance engineering is effectively improved.
In summary, through the mutual cooperation between each subassembly inside the superhigh pressure cable, the inside temperature detection of superhigh pressure cable, the outside waters temperature detection of cable and the process of generating heat point location have been optimized, through the mutual cooperation between temperature sensor, suspension sensor, luminous lamp pearl and the transparent circle box, make the superhigh pressure cable can long-range monitor its inside temperature in the use, and when detecting superhigh pressure cable outside ambient temperature through suspension sensor, through temperature sensor and the suspension sensor of contrast relevant position department in order to confirm the reason that generates heat of superhigh pressure cable, and through the mutual cooperation between luminous lamp pearl and the transparent circle box, make maintainer can fix a position the generating heat point of superhigh pressure cable fast, and then effectual smoothness and convenience that has improved superhigh pressure cable monitoring maintenance.
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 structure of the end face of the present invention;
FIG. 3 is a schematic view of the structure of the present invention for clamping the installation of the silica gel strip;
FIG. 4 is a schematic view of the structure of the outer channel position of the present invention;
FIG. 5 is a schematic view of the structure of the temperature sensor installation of the present invention;
FIG. 6 is a schematic view of the structure of the data connection cord installation of the present invention;
FIG. 7 is a schematic view of the construction of the transparent round box installation of the present invention;
reference numerals in the drawings: 1. a central oil passage; 2. a power transmission wire; 3. a polyethylene conductor shield; 4. an insulating layer; 5. an insulating shield; 6. protecting the lead sleeve; 7. a CPVC inner liner; 8. a fiber reinforced layer; 9. a protective inner layer; 10. a protective middle layer; 11. a protective outer layer;
12. an inner channel; 13. a side arc groove; 14. clamping a silica gel strip; 15. a circular mounting channel; 16. installing side holes; 17. attaching the flat groove; 18. clamping the arc-shaped groove; 19. attaching a flat bar; 20. limiting convex particles; 21. a fiber signal conductor; 22. a temperature sensor; 23. a clamping edge groove; 24. a thermally conductive arc plate;
25. a round storage box; 26. clamping the arc-shaped box; 27. a data connection strip; 28. a data connection cord; 29. a suspension sensor; 30. a buoyancy knob; 31. a storage guide groove; 32. sealing the telescopic air bag; 33. connecting tail pieces; 34. a wire winding belt;
35. an outer channel; 36. an arc-shaped clamping groove; 37. protecting the flexible rubber tube; 38. installing a side barrel; 39. a power transmission flat belt; 40. a light emitting lamp bead; 41. a limiting adhesive tape; 42. positioning the round groove; 43. a transparent round box; 44. a thin mesh; 45. transparent isolating strips.
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. 1-7, the invention provides a technical scheme, which comprises a central oil duct 1, wherein a power transmission wire 2 is coated on the outer side of the central oil duct 1, a polyethylene conductor shield 3 is tightly coated on the power transmission wire 2, an insulating layer 4 is coated on the outer side of the polyethylene conductor shield 3, an insulating shield 5 is tightly wound on the outer side of the insulating layer 4, a protective lead sleeve 6 is tightly sleeved on the outer side of the insulating shield 5, a CPVC lining layer 7 is tightly coated on the outer side of the protective lead sleeve 6, a fiber reinforced layer 8 is wound on the outer side of the CPVC lining layer 7, a protective inner layer 9 is coated on the outer side of the fiber reinforced layer 8, a protective middle layer 10 is coated on the outer side of the protective inner layer 9, and a protective outer layer 11 is coated on the protective middle layer 10;
an inner groove 12 is formed in the position between the inner protective layer 9 and the middle protective layer 10 at equal intervals along the circumferential direction, side arc grooves 13 are uniformly formed in the position between the inner protective layer 9 and the middle protective layer 10 corresponding to the two sides of the inner groove 12 at equal intervals along the axial direction, clamping silica gel strips 14 are symmetrically filled in the inner groove 12, circular mounting grooves 15 are formed in the positions between the two clamping silica gel strips 14 in a penetrating mode, mounting side holes 16 are uniformly formed in the middle of the side faces of the clamping silica gel strips 14 in a penetrating mode at equal intervals, bonding flat grooves 17 are formed in the two side edges of the clamping silica gel strips 14, and clamping arc grooves 18 are uniformly formed in the positions, corresponding to the inner positions of the bonding flat grooves 17, of the side faces of the clamping silica gel strips 14 at equal intervals;
the inside of the laminating flat groove 17 is tightly adhered with a laminating flat bar 19, a limiting convex particle 20 is arranged at the position of one side of the laminating flat bar 19 corresponding to the inside position of the clamping arc groove 18, two clamping silica gel strips 14 are aligned, the two clamping silica gel strips 14 are tightly adhered to each other, the inner side of the laminating flat bar 19 is tightly adhered to the inner wall of the laminating flat groove 17, the side surface of the laminating flat bar 19 is flush with the side surface of the clamping silica gel strip 14, the limiting convex particle 20 corresponds to the position of the clamping arc groove 18 and is mutually clamped, the outer side of the limiting convex particle 20 is tightly and slidingly adhered to the inner wall of the clamping arc groove 18, a fiber signal wire 21 is inserted into the inner wall of the clamping silica gel strip 14 corresponding to the inside of the circular mounting groove 15, a temperature sensor 22 is fixedly connected to the inner position of the outer side surface of the fiber signal wire 21 corresponding to the mounting side hole 16, clamping edge grooves 23 are symmetrically arranged at the side edges of the side surfaces of the two clamping silica gel strips 14, the heat conduction arc plates 24 are clamped at the positions of the two sides of the clamping silica gel strip 14 corresponding to the inner positions of the clamping side grooves 23, the outer sides of the temperature sensors 22 are tightly attached to the inner walls of the mounting side holes 16, the end faces of the temperature sensors 22 are mutually flush with the side faces of the clamping silica gel strip 14, the end parts of the fiber signal wires 21 are mutually connected with an external controller, the outer sides of the heat conduction arc plates 24 are positioned in the side arc grooves 13, the mounting mode of the fiber signal wires 21 and the temperature sensors 22 is optimized through the mutual fit between the clamping silica gel strips 14 and the components connected with the clamping silica gel strip 14, the structural strength of the splicing between the two clamping silica gel strips 14 is effectively improved through the mutual fit between the attaching flat grooves 17, the clamping arc grooves 18, the attaching flat strips 19 and the limiting convex particles 20, the clamping silica gel strips 14 can be tightly coated outside the fiber signal wires 21 and the temperature sensors 22, the outside of the fiber signal wire 21 and the temperature sensor 22 can be protected by clamping the silica gel strip 14, and the temperature sensor 22 is limited and clamped by mounting the side hole 16, so that the integral structural strength of the fiber signal wire 21 and the temperature sensor 22 is effectively improved, the resistance of the fiber signal wire 21 and the temperature sensor 22 to external mechanical impact is improved, the fiber signal wire 21 and the temperature sensor 22 can be normally used in the running process of the ultra-high voltage cable, and the running stability of the fiber signal wire 21 and the temperature sensor 22 is improved;
meanwhile, by utilizing the characteristic that the clamping silica gel strip 14 and the heat conduction arc plate 24 are strong in heat conductivity, the heat in the ultra-high voltage cable can be rapidly and uniformly distributed in the operation process, so that the phenomenon that the heating point in the ultra-high voltage cable cannot be rapidly detected when the heating point is just far away from the temperature sensor 22 is effectively prevented, the detection range of the temperature sensor 22 is effectively enlarged, the accuracy of the temperature detection in the ultra-high voltage cable is improved, when the abnormal heating phenomenon occurs in the ultra-high voltage cable, the rapid detection and positioning of the heating point in the ultra-high voltage cable can be realized through the cooperation of the fiber signal wire 21 and the temperature sensor 22, and maintenance personnel can timely maintain the ultra-high voltage cable when the temperature abnormality occurs, and the maintenance cost of the ultra-high voltage cable is effectively reduced;
the middle part of one side of the outer part of the protection layer 11 is uniformly provided with a storage round box 25 at equal intervals, two sides of the storage round box 25 are fixedly connected with a clamping arc box 26 corresponding to the outer side of the outer part of the protection layer 11, the side surfaces of two adjacent storage round boxes 25 are fixedly connected through a data connection belt 27, one side of the inner part of the clamping arc box 26 is fixedly connected with a data connection flexible wire 28, the tail end of the data connection flexible wire 28 is fixedly connected with a suspension sensor 29 corresponding to the top part of the storage round box 25, the storage round box 25 and the clamping arc box 26 can be freely disassembled according to requirements, the output ends of the temperature sensor 22 and the suspension sensor 29 are mutually connected with external receiving equipment, the outer side of the suspension sensor 29 is sleeved with a buoyancy round block 30, the middle part of the bottom surface of the buoyancy round block 30 is provided with a storage guide groove 31 in a penetrating way, the storage round box 25 and the clamping arc box 26 jointly form a buckle structure, the bottom surface of the storage round box 25 is tightly attached to the inner side of the clamping arc box 26, the suspension sensor 29 can detect the temperature of seawater, the installation process of the suspension sensor 29 is optimized through the mutual matching of the storage round box 25 and the clamping arc box 26 and each component on the storage round box, each component is clamped to the outer side of the protective outer layer 11 through a clamping structure formed by the storage round box 25 and the clamping arc box 26, when the clamping arc box 26 is positioned above the water surface by utilizing the expansion and contraction characteristics of the sealing expansion air bag 32, the connecting tail piece 33 and the wire collecting belt 34 are propped to the side far away from the storage round box 25 through the expansion of the sealing expansion air bag 32, the data connecting flexible wire 28 is pulled and pulled into an S shape through the wire collecting belt 34, the data connecting flexible wire 28 is further stored into the two clamping arc boxes 26, and the buoyancy round block 30 can be stored into the storage round box 25, the phenomenon that the data connection flexible wires 28 and the suspension sensors 29 are mutually wound in the running process of the storage round box 25 is effectively prevented, the sealing telescopic air bags 32 are gradually compressed in the sinking process by water pressure, the data connection flexible wires 28 and the suspension sensors 29 are gradually released in the laying sinking process of the ultra-high voltage cable, and therefore the installation convenience of the temperature measuring elements on the periphery of the ultra-high voltage cable is effectively improved;
meanwhile, through the mutual coordination between the data connection flexible wire 28 and the suspension sensor 29 and the characteristic that the data connection flexible wire 28 and the suspension sensor 29 can shake freely along with water flow, the environment temperature of the periphery of the ultra-high voltage cable can be detected through the suspension sensor 29, whether the abnormal high temperature of the ultra-high voltage cable is caused by internal factors or external factors can be rapidly determined through the comparison of the data detected by the suspension sensor 29 and the temperature sensor 22, an overhaul scheme can be conveniently and remotely formulated by an overhaul personnel, meanwhile, when the periphery of the ultra-high voltage cable is impacted by foreign objects or attacked by fish by utilizing the fragile structural characteristics of the data connection flexible wire 28 and the suspension sensor 29, the abnormal damage position can be rapidly positioned through the damage of the data connection flexible wire 28 and the suspension sensor 29, and further, the outside of the ultra-high voltage cable at the damaged position of the data connection flexible wire 28 and the suspension sensor 29 can be timely detected, so that tiny damage of the periphery of the ultra-high voltage cable can not be timely removed and developed into serious damage can be prevented, and the use safety of the ultra-high voltage cable is further improved;
the inner side of the clamping arc box 26 is symmetrically and fixedly adhered with a sealed telescopic airbag 32 near one end of the storage round box 25, the tail ends of the two sealed telescopic airbags 32 are jointly adhered with a connecting tail piece 33, a wire collecting belt 34 is fixedly connected to the middle part of one side of the connecting tail piece 33 corresponding to the position between the two sealed telescopic airbags 32, the buoyancy round block 30 is made of a light anti-corrosion material, the top surface shape of the buoyancy round block 30 is the same as the shape of the end face of the inner cavity of the storage round box 25, the sealed telescopic airbags 32 can stretch along the inner cavity of the clamping arc box 26, and the tail ends of the two wire collecting belts 34 are movably sleeved on the outer side of the data connecting flexible wire 28;
the protective middle layer 10 and the protective outer layer 11 are directly penetrated and provided with an outer channel 35 along the circumferential direction at equal intervals, the outer side of the protective outer layer 11 is provided with an arc clamping groove 36 along the circumferential direction at equal intervals corresponding to the position of the outer side of the outer channel 35, the inside of the outer channel 35 is filled with a protective flexible rubber tube 37, the middle part of one side of the protective flexible rubber tube 37 is uniformly adhered with a mounting side cylinder 38 at equal intervals, one side of the inside of the mounting side cylinder 38 is adhered with a power transmission flat belt 39, the outer side of the protective flexible rubber tube 37 is tightly adhered with the inner wall of the arc clamping groove 36, the end part of the power transmission flat belt 39 is mutually connected with external power supply equipment, the middle part of one side of the power transmission flat belt 39 is fixedly connected with a luminous lamp bead 40 at equal intervals corresponding to the position of the end part of the mounting side cylinder 38, the position of one side of the protective flexible rubber tube 37 is filled with a limiting rubber tube 41 corresponding to the end part of the mounting side cylinder 38 is provided with a positioning round groove 42, the end of the positioning round groove 42 is clamped with a transparent round box 43 corresponding to the inner position of the installation side barrel 38, the outer side of the inner wall of the transparent round box 43 is adhered with a light and thin net sheet 44, the inside of the arc-shaped clamping groove 36 is adhered with a transparent isolation strip 45, the inside of the transparent round box 43 is filled with supersaturated sodium acetate solution, a large amount of sodium acetate crystals exist in the transparent round box 43 at normal temperature, the outer cambered surface of the transparent isolation strip 45 and the outer cambered surface of the protective outer layer 11 are mutually flush, the positioning process of a maintainer on a heating point is optimized through the mutual cooperation between the protective flexible rubber tube 37 and the installation side barrel 38 and the components inside the protective flexible rubber tube, the installation limit of the luminous lamp beads 40 and the transparent round box 43 is carried out through the protective flexible rubber tube 37 and the installation side barrel 38, so that the luminous lamp beads 40 and the transparent round box 43 can be always aligned, the end of the installation side barrel 38 is protected through the transparent isolation strip 45, the transparent isolation strip 45 is characterized in that the outside of the transparent isolation strip 45 is smooth, so that dirt at the water bottom is effectively prevented from being firmly attached to the side surface of the transparent isolation strip 45, the outside of the transparent isolation strip 45 can be restored to a transparent state only by simple flushing, and further, the light rays emitted by the luminous lamp beads 40 can smoothly penetrate through the transparent round box 43, the light and thin net sheet 44 and the transparent isolation strip 45 and be observed by an maintainer, and further, the normal running of the heating point positioning flow is ensured;
meanwhile, the characteristic of supersaturated sodium acetate solution filled in the transparent round box 43 is utilized, so that the solubility of sodium acetate in the transparent round box 43 is different in different temperature environments, the sodium acetate crystallization position in the transparent round box 43 is guided through the light and thin net sheet 44, the light transmittance of the transparent round box 43 in a low temperature area is reduced under the influence of sodium acetate crystallization, sodium acetate in the transparent round box 43 in a high temperature area is completely dissolved in the solution, the transparent round box 43 in the high temperature area has good light transmittance, and therefore the brightness of the luminous lamp beads 40 in the high temperature area observed by an maintainer from the outside of the ultra-high voltage cable is higher than that in the low temperature area, and the heating point is rapidly positioned by observing the light brightness generated by the luminous lamp beads 40, so that the convenience of the ultra-high voltage cable maintenance engineering is effectively improved.
The working principle and the using flow of the invention are as follows: in the long-time use process of the ultra-high voltage cable, insulating oil is supplemented to the inside of the ultra-high voltage cable through the central oil duct 1, so that gaps generated by thermal expansion and cold contraction caused by load change in the ultra-high voltage cable are compensated through the insulating oil, the outer side of the ultra-high voltage cable is shielded through the polyethylene conductor shield 3 and the insulating shield 5, the influence on the surrounding environment in the transmission process of the ultra-high voltage cable is reduced, and meanwhile, the outer side of the ultra-high voltage cable is protected through the insulating layer 4, the protective lead sleeve 6, the CPVC lining layer 7 and the fiber reinforcement layer 8, so that the overall structural strength of the ultra-high voltage cable is effectively improved;
in the transmission process of the ultra-high voltage cable, heat is continuously generated in the ultra-high voltage cable, an additional mounting cavity is formed between the protective inner layer 9 and the protective middle layer 10 through the inner groove 12 and the side arc groove 13, then the clamping silica gel strip 14 is mounted between the protective inner layer 9 and the protective middle layer 10 through the inner groove 12, the bonding flat strip 19 and the limiting convex particle 20 are bonded to the lateral surface of the clamping silica gel strip 14 through the bonding flat groove 17, after the clamping arc groove 18 and the limiting convex particle 20 are mutually buckled, the two clamping silica gel strips 14 are fixedly limited through a mechanical limiting structure formed by the clamping arc groove 18 and the limiting convex particle 20, the buckling tightness degree between the two clamping silica gel strips 14 is further improved, the outer sides of the fiber signal wire 21 and the temperature sensor 22 are coated and protected through the clamping silica gel strip 14, the outer sides of the temperature sensor 22 are positioned through the mounting side holes 16, the temperature sensor 22 can still be equidistantly mounted and connected to the outer sides of the fiber signal wire 21 in the transmission process of the ultra-high voltage cable, the stability in the installation process of the fiber signal wire 21 and the temperature sensor 22 is ensured, the clamping side surface of the thermal conductive plate 24 is also connected to the lateral surface of the thermal conductive plate 24 through the clamping arc groove 23 and the thermal conductive plate 24, and the thermal conductive plate 24 can be correspondingly buckled with the end part of the thermal conductive plate 24 and the thermal conductive plate 24;
the heat in the ultra-high voltage cable is axially absorbed and conducted through the clamping silica gel strips 14, and is conducted in the circumferential direction through the heat conducting arc plates 24, so that the heat in the ultra-high voltage cable can be uniformly transferred to the outer side of the temperature sensor 22, temperature data at the corresponding position in the ultra-high voltage cable are collected through the temperature sensor 22, the temperature data are transferred to the data receiving equipment through the fiber signal wires 21, and the remote detection of the temperature in the ultra-high voltage cable is realized;
when the ultra-high voltage cable is used, the temperature sensor 22 is used for detecting the inside of the ultra-high voltage cable in real time, the environment of the water area around the ultra-high voltage cable is required to be monitored in an auxiliary mode, according to the path of the water area where the ultra-high voltage cable is paved, the storage round box 25 and components connected to the storage round box are clamped to the outer side of the ultra-high voltage cable through the clamping arc box 26, the suspension sensor 29 is connected to the side face of the storage round box 25 through the data connection flexible wires 28, and the storage round boxes 25 are connected through the data connection belts 27, so that the data connection belts 27 can be directly communicated with each other, and further the data collected by the suspension sensor 29 can be smoothly sent to the data receiving end;
according to the environmental characteristics of an ultra-high voltage cable laying water area, the storage round box 25 and the clamping arc box 26 are clamped to the outer side of the ultra-high voltage cable on the water surface, in the sinking process of the ultra-high voltage cable from top to bottom, along with the continuous rising of the external water pressure of the sealing telescopic air bag 32, the sealing telescopic air bag 32 continuously contracts towards the storage round box 25 under the action of the water pressure, the connecting tail piece 33 and the wire winding belt 34 are synchronously driven to approach the storage round box 25 in the contracting process of the sealing telescopic air bag 32, the restraint of the data connecting flexible wire 28 is gradually released in the moving process of the wire winding belt 34 towards the storage round box 25, meanwhile, the suspension sensor 29 drives the data connecting flexible wire 28 to gradually depart from the storage round box 25 under the action of the buoyancy generated by the buoyancy round block 30, so that the suspension sensor 29 can suspend on the periphery of the ultra-high voltage cable, the data connecting flexible wire 28 and the suspension sensor 29 freely swing along with the water flow, and the ambient temperature of the water area around the ultra-high voltage cable is further detected through the suspension sensor 29;
when the temperature abnormality phenomenon of the ultra-high voltage cable is found remotely and an overhaul worker is required to overhaul an abnormal ultra-high voltage cable section, the abnormal heating position of the ultra-high voltage cable needs to be quickly positioned, the protective flexible rubber tube 37, the installation side barrel 38 and the internal components thereof are installed between the protective middle layer 10 and the protective outer layer 11 through the outer groove 35, and meanwhile, the transparent isolation strip 45 is installed at the end part of the installation side barrel 38 through the arc-shaped clamping groove 36, so that the opening part of the end part of the installation side barrel 38 and the periphery of the protective outer layer 11 are kept smooth, and the dirt at the water bottom is prevented from being firmly adsorbed to the outer side of the transparent isolation strip 45 to reduce the transparency of the transparent isolation strip 45;
after the inspector reaches the vicinity of the abnormal heating point, the power transmission flat belt 39 supplies power to the light-emitting lamp beads 40, so that the light-emitting lamp beads 40 generate an obvious light source at the water bottom, the light source generated by the light-emitting lamp beads 40 can penetrate through the transparent round box 43, the light and thin net sheet 44 and the transparent isolating strip 45 to diffuse outwards, the temperature of the supersaturated sodium acetate solution in the transparent round box 43 near the abnormal heating point of the ultra-high voltage cable is increased by utilizing the characteristic of the supersaturated sodium acetate solution in the transparent round box 43, the solubility of sodium acetate is improved, and then the sodium acetate crystals attached to the periphery of the light and thin net sheet 44 in the transparent round box 43 are dissolved, so that the supersaturated solution in the transparent round box 43 is changed into a clear solution, and the light source generated by the light-emitting lamp beads 40 at the high temperature point is more clearly observed outside the ultra-high voltage cable, so that the inspector is assisted in rapidly positioning the abnormal heating point.
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. Submarine ultrahigh voltage cable with temperature measurement unit, including central oil duct (1), its characterized in that: the outside of the central oil duct (1) is sequentially coated with a power transmission wire (2), a polyethylene conductor shield (3), an insulating shield (5), a protective lead sleeve (6), a CPVC inner liner layer (7), a fiber reinforced layer (8), a protective inner layer (9), a protective middle layer (10) and a protective outer layer (11) from inside to outside;
an inner groove (12) is formed between the protective inner layer (9) and the protective middle layer (10), an edge arc groove (13) is formed between the protective inner layer (9) and the protective middle layer (10), clamping silicon rubber strips (14) are filled in the inner groove (12), circular mounting grooves (15) are formed between the two clamping silicon rubber strips (14), mounting side holes (16) are formed in the side faces of the clamping silicon rubber strips (14), bonding flat grooves (17) are formed in two sides of the clamping silicon rubber strips (14), and clamping arc grooves (18) are uniformly formed in the side faces of the clamping silicon rubber strips (14) at equal intervals corresponding to the inner positions of the bonding flat grooves (17);
laminating flat groove (17) inside bonding has laminating flat bar (19), laminating flat bar (19) one side is provided with spacing protruding grain (20), inside interlude of circular mounting channel (15) of centre gripping silica gel strip (14) inner wall corresponds has fiber signal wire (21), fiber signal wire (21) outside is connected with temperature sensor (22), two joint limit groove (23) have all been seted up to centre gripping silica gel strip (14) side, equal joint in centre gripping silica gel strip (14) both sides has heat conduction arc board (24).
2. The submarine ultrahigh voltage cable with the temperature measuring unit according to claim 1, wherein two clamping silica gel strips (14) are aligned, the two clamping silica gel strips (14) are tightly attached to each other, the inner sides of the attaching flat strips (19) are tightly attached to the inner walls of the attaching flat grooves (17), the side surfaces of the attaching flat strips (19) are flush with the side surfaces of the clamping silica gel strips (14), the limiting convex particles (20) are in mutual correspondence with the clamping arc grooves (18) in position and are clamped with each other, and the outer sides of the limiting convex particles (20) are tightly and slidably attached to the inner walls of the clamping arc grooves (18).
3. The submarine ultrahigh voltage cable with the temperature measurement unit according to claim 1, wherein the outer side of the temperature sensor (22) is tightly attached to the inner wall of the installation side hole (16), the end face of the temperature sensor (22) is flush with the side face of the clamping silica gel strip (14), the end portion of the fiber signal wire (21) is connected with an external controller, and the outer side of the heat conducting arc plate (24) is located inside the side arc groove (13).
4. The submarine ultrahigh voltage cable with the temperature measurement unit according to claim 1, wherein storage round boxes (25) are uniformly arranged at the middle position of one side of the outer part of the protective outer layer (11) at equal intervals, clamping arc boxes (26) are fixedly connected at the positions of the two sides of each storage round box (25) corresponding to the outer side of the protective outer layer (11), two adjacent storage round box (25) side surfaces are fixedly connected through a data connection belt (27), a data connection flexible wire (28) is fixedly connected at one side of the inner part of each clamping arc box (26), a suspension sensor (29) is fixedly connected at the position of the tail end of each data connection flexible wire (28) corresponding to the top of each storage round box (25), buoyancy round blocks (30) are sleeved on the outer sides of the suspension sensors (29), and storage guide grooves (31) are formed in the middle of the bottom surfaces of the buoyancy round blocks (30) in a penetrating mode;
the inner side of the clamping arc-shaped box (26) is symmetrically and fixedly adhered with sealing telescopic air bags (32) at one end close to the storage round box (25), connecting tail pieces (33) are jointly adhered at the tail ends of the sealing telescopic air bags (32), and a wire collecting belt (34) is fixedly connected at the position, corresponding to the middle part of one side of each connecting tail piece (33), between the two sealing telescopic air bags (32).
5. The submarine ultrahigh voltage cable with the temperature measuring unit according to claim 4, wherein the storage round box (25) and the clamping arc box (26) form a clamping structure together, the bottom surface of the storage round box (25) is tightly attached to the inner side of the clamping arc box (26), and the suspension sensor (29) can detect the temperature of seawater.
6. The submarine ultrahigh voltage cable with the temperature measurement unit according to claim 4, wherein the buoyancy round block (30) is made of a light anti-corrosion material, the top surface of the buoyancy round block (30) is identical to the end surface of the inner cavity of the storage round box (25), the sealed telescopic airbag (32) can be telescopic along the inner cavity of the clamping arc box (26), and the tail ends of the two wire collecting belts (34) are movably sleeved on the outer side of the data connecting flexible wire (28).
7. The submarine ultrahigh-voltage cable with the temperature measuring unit according to claim 1, wherein the protective middle layer (10) and the protective outer layer (11) directly penetrate through the protective middle layer along the circumferential direction equidistance to form an outer channel (35), arc clamping grooves (36) are formed in the position corresponding to the outer channel (35) on the outer side of the protective outer layer (11) along the circumferential direction equidistance, flexible protection rubber pipes (37) are filled in the outer channel (35), installation side barrels (38) are uniformly bonded on one side of the protective flexible rubber pipes (37) at equal intervals, a power transmission flat belt (39) is bonded on one side of the installation side barrels (38), luminescent lamp beads (40) are fixedly connected to the position corresponding to the end position of the installation side barrels (38) on one side of the power transmission flat belt (39) at equal intervals, limiting rubber pipes (41) are filled in one side positions corresponding to the end position of the installation side barrels (38), positioning round grooves (42) are formed in the position corresponding to the end position of the installation side barrels (38), transparent net pieces (43) are bonded on the outer sides of the transparent net pieces (43), and the transparent net pieces (43) are bonded on the outer sides of the transparent net pieces (45).
8. The submarine ultrahigh voltage cable with the temperature measurement unit according to claim 7, wherein the outer side of the protective flexible rubber tube (37) is tightly attached to the inner wall of the arc-shaped clamping groove (36), and the end of the power transmission flat belt (39) is connected with external power supply equipment.
9. The submarine ultrahigh voltage cable with the temperature measurement unit according to claim 7, wherein supersaturated sodium acetate solution is filled in the transparent round box (43), a large amount of sodium acetate crystals exist in the transparent round box (43) at normal temperature, and the outer cambered surface of the transparent isolating strip (45) and the outer cambered surface of the protective outer layer (11) are mutually flush.
10. The submarine ultrahigh voltage cable with the temperature measuring unit according to claim 4, wherein the round storage box (25) and the arc-shaped clamping box (26) can be freely disassembled according to requirements, and the output ends of the temperature sensor (22) and the suspension sensor (29) are mutually connected with external receiving equipment.
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| CN101587760A (en) * | 2009-05-07 | 2009-11-25 | 中国石油辽河油田钻采工艺研究院 | Cable of downhole monitoring system of horizontal steam injection well and preparation method thereof |
| CN115762894A (en) * | 2023-01-06 | 2023-03-07 | 京缆电缆有限公司 | Safe type 110kV high tension cable convenient to connect |
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| KR102468594B1 (en) * | 2017-07-07 | 2022-11-17 | 엘에스전선 주식회사 | Shaped Filler For Cable And Submarine Cable Having The Same |
| CN208753041U (en) * | 2018-09-25 | 2019-04-16 | 山东大学 | The cooling charging cable of liquid and electric vehicle rapid charging equipment |
| NO345360B1 (en) * | 2018-12-04 | 2020-12-21 | Aker Solutions As | Power umbilical with impact protection |
| CN209358220U (en) * | 2019-03-25 | 2019-09-06 | 上海伟泰实业发展有限公司 | A kind of solid wall buckle-type cable protection pipe and its connector |
| CN209515236U (en) * | 2019-04-08 | 2019-10-18 | 宁波东方电缆股份有限公司 | A kind of packing for sea cable |
| CN111261330A (en) * | 2020-03-17 | 2020-06-09 | 东方交联电力电缆有限公司 | Oil-filled 500kV ultrahigh-voltage submarine cable |
| CN111768913B (en) * | 2020-07-09 | 2021-11-16 | 安徽凌宇电缆科技有限公司 | Photovoltaic cable convenient to disconnect |
| CN111739680A (en) * | 2020-07-21 | 2020-10-02 | 江苏亨通高压海缆有限公司 | Multifunctional landing submarine cable |
| CN113161069A (en) * | 2021-04-28 | 2021-07-23 | 四川鑫电电缆有限公司 | Copper pipe cooling high current-carrying cable |
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| CN101587760A (en) * | 2009-05-07 | 2009-11-25 | 中国石油辽河油田钻采工艺研究院 | Cable of downhole monitoring system of horizontal steam injection well and preparation method thereof |
| CN115762894A (en) * | 2023-01-06 | 2023-03-07 | 京缆电缆有限公司 | Safe type 110kV high tension cable convenient to connect |
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