797results about "Insulated cables" patented technology

An electrical or optical cable with at least one insulated conductor and an inner sheath layer incorporates an adhesion regulator composition that enables a reproducible stripping force value during cable manufacturing and eliminates the need for powder in the cable. The adhesion regulator composition is integrated into the conductor insulation and / or the inner sheath layer and comprises poly(organo)siloxane compounds and fatty acid amides. The cable optionally has an outer sheath layer that is free of the adhesion regulator composition.

The utility model provides a kind of deicing wind-resistant double-insulated overhead transmission cable, it is characterized by including steel wire tensioning element, inner insulation layer, aluminum alloy conductor layer, outer insulation layer;Utilize steel wire tensioning element to pass through aluminum alloy conductor layer, steel wire tensioning element inductive heat generation, heat is radiated to cable surface through the inner insulation layer with certain thermal conductivity, aluminum alloy conductor layer and outer insulation layer, can continuously generate heat to melt cable surface icing. Real-time heating cable surface, substantially reduce the possibility of cable surface icing in low-temperature freezing weather, reduce cable icing hazards, while the surface is designed wind channel structure, reduce the synergistic hazards of icing and strong wind, deicing efficiency is high, compared with other deicing methods efficiency is higher while cost is lower, beneficial to the development of industry, to improve power grid operation efficiency in turn, with popularization and utilization value.

Disclosed in the present disclosure are an electric energy transmission system and an automobile. The electric energy transmission system includes at least one electric connection skeleton, an insulating layer sleeved on an outer wall of the electric connection skeleton, and connectors provided at two ends of the electric connection skeleton, and the electric connection skeleton is provided with at least one bent portion, and in at least a portion of the bent portion, at least one cavity is provided between an inner wall of the insulating layer and a periphery of the electric connection skeleton. The arrangement of this structure can ensure that the safety of the electric energy transmission system is greatly improved.

The application discloses a kind of high-conductivity cable overhead line manufacturing method, including S1, substrate preparation treatment;S2, single wire drawing forming;S3, axial groove structure processing;S4, conductor annealing treatment;S5, conductive layer coating treatment;S6, multi-wire stranding forming.A kind of high-conductivity cable overhead line includes, conductor, conductive layer, insulating layer, shielding layer and outer sheath;The outer surface of the conductor is provided with multiple axial grooves along its axial direction.The application is coated by conductive layer, multiple circular pores in the interior of metal particles enable binder to enter particle, form mechanical interlocking structure, enhance the binding force between metal particles and binder, which makes the conductive layer not easy to fall off from the surface of the conductor after solidification, even if subjected to slight mechanical friction or vibration, conductive layer can still keep intact, in addition, circular pore structure makes metal particles form more compact accumulation inside conductive layer, reduce the gap inside conductive layer, improve the overall structural stability of conductive layer.

The application discloses a kind of superflexible low smoke flame retardant cable and preparation method thereof, the superflexible low smoke flame retardant cable is by internal multiple strand twisted copper conductor and protective layer, protective layer is coated in the multiple strand twisted copper conductor outer surface, from inside to outside successively include: inner sheath layer, thickness is 0.5mm-1.5mm, is made of first polymer composite material;Outer sheath layer, thickness is 0.8mm-2.0mm, is made of second polymer composite material;Inner protective layer is tightly coated multiple strand twisted copper conductor outer surface, outer sheath layer is coated in the outer surface of inner sheath layer, and outer sheath layer inside is coated with several groups of coated inner sheath layer multiple strand twisted copper conductor;The first polymer composite material and second polymer composite material are prepared by 100-120 parts of organic silicon modified polyolefin resin, 12-25 parts of modified nanometer montmorillonite, 40-70 parts of halogen-free flame-retardant synergist combination, 0.5-3 parts of platinum complex catalytic crosslinking agent and 8-20 parts of superflexible plasticizer by mass fraction.

This utility model discloses a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, the four isolation walls of the cross-shaped frame having different wall thicknesses, a buffer groove provided at the top of the isolation wall, and a folded groove aligned with the bottom of the buffer groove on the outer wall of the isolation wall, a filling rope and a set of twisted core wires arranged in the cavity between two adjacent isolation walls, aluminum-plastic composite tape wrapped around the twisted core wires, and tinned copper wire braided tape woven on the cross-shaped frame, the tinned copper wire braided tape being in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abutting against the twisted core wires and compressing the buffer groove, the groove wall of the buffer groove bending along the folded groove and abutting against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape wrapped around the tinned copper wire braided tape, and a sheath extruded onto the wrapping tape. This utility model has a simple structure and excellent signal shielding performance both internally and externally.

This invention discloses an ultra-high voltage cable with an aluminum-pressed sheath, relating to the field of cable technology. It includes an outer sheath, inside which a cable core is installed. An insulating shielding sleeve is fitted over the outer wall of the cable core. An inner nesting sleeve is fitted over the outer side of the insulating shielding sleeve. A reinforcing strip is symmetrically wound around the outer wall of the inner nesting sleeve. Several arc pads are installed at equal angles along the circumferential direction on the outer side of the reinforcing strip. A support sleeve is fitted over the outer side of each arc pad. This invention effectively integrates spiral limiting, multi-dimensional gradient buffering, flexible protection, and rigid support. It not only forms multiple radial and axial stress relief networks, achieving multi-level stress dispersion and efficient buffering of mechanical stress, providing reliable flexibility for ultra-high voltage cables, but also forms a radially dominant, multi-axially auxiliary heat conduction network while ensuring mechanical strength, effectively improving the cable's heat dissipation capacity and simultaneously meeting the cable's requirements for mechanical strength and heat dissipation performance.

The utility model discloses a low resistance's electric motor car power harness, including cable, the cable outer wall is equipped with the protective sleeve, and cable outer wall is installed with the hoop, and the hoop outer wall is provided with the floating mechanism, and cable one end electric connection has the plug, and the plug outer surface is provided with the locking mechanism, and the connecting plate fixed connection is in the hoop outer surface, and the floating plate is fixed in connecting plate one side, and the floating box sliding connection is in the floating plate outer wall, and the connecting block fixed connection is in the floating box outer surface, and two springs one respectively fixed connection is in the floating plate top and bottom, and two springs one another end respectively with floating box inner wall top and bottom fixed connection. The utility model discloses through the floating mechanism can y effectively prevent the looseness that appears because of the body vibration, through through the locking mechanism can guarantee the plug and the stable connection of the spout, to this guarantee plug and the conductive contact of interface close adhesion, control contact resistance at extremely low level.

This disclosure provides a liquid-cooled charging pile, belonging to the field of charging technology. The charging cable of the liquid-cooled charging pile includes a first cooling pipe and a second cooling pipe, which respectively house the positive and negative electrode wires. The liquid-cooled charging pile alternately operates in a first mode and a second mode. In the first mode, the coolant in the first cooling pipe circulates, while the coolant in the second cooling pipe is sealed within the second cooling pipe. In the second mode, the coolant in the second cooling pipe circulates, while the coolant in the first cooling pipe is sealed within the first cooling pipe. By alternating between the first and second modes, the heat from the positive and negative electrode wires is alternately carried away by the coolant, achieving heat dissipation of the entire charging cable. Furthermore, in both the first and second modes, the coolant in the first cooling pipe and the coolant in the second cooling pipe are isolated, eliminating the risk of continuity between the positive and negative electrode wires through the coolant.

A wire harness includes a tubular member, an electric wire member, a cover member, and a holder. The electric wire member includes electric wires connected to each other. The electric wires each have a core wire covered by an insulation sheath. The cover member covers a circumference of a connected part of the electric wires. The electric wire member is inserted through the tubular member. The holder is tubular and is arranged at an end part of the tubular member to protect the electric wire member at a part where the cover member is arranged. The electric wire member includes a double-insulation portion where the core wire is covered by the insulation sheath and the cover member. The holder includes a hollow portion in a part where the double-insulation portion is located.

The application relates to the technical field of cable material manufacturing, and discloses a light-weight flexible wear-resistant electrical equipment connecting cable, a sheath of the connecting cable being made of raw materials including the following: polyester type thermoplastic polyurethane elastomer, styrene-acrylonitrile copolymer, maleic anhydride grafted polyolefin elastomer, blocked isophorone diisocyanate, wear-resistant premixed solution containing a catalyst, slow-release foaming master batch and functional additives; wherein the wear-resistant premixed solution containing the catalyst contains hydroxyl-terminated polydimethylsiloxane and a bismuth octoate catalyst, the slow-release foaming master batch contains modified azodicarbonamide foaming agent and carrier resin, and the functional additives contain antioxidants and carbodiimide hydrolysis stabilizers. According to the application, the hydroxyl-terminated polydimethylsiloxane containing the catalyst and the blocked isocyanate are introduced into the polyurethane matrix in cooperation through a reaction extrusion process, the isocyanate groups are unblocked at high temperature, and the organic silicon chain segment is chemically bonded with the matrix resin.

This invention relates to the field of power cable technology and discloses a wear-resistant modified PE sheathed power cable with a braided reinforcement layer. From the inside out, the invention comprises a conductor, an insulation layer, a filler layer, a metal shielding layer, an inner sheath layer, a buffer layer, an armor layer, a double-gradient braided layer, and an outer sheath layer. The buffer layer is filled with nano-magnesium hydroxide particles and hollow glass microspheres to enhance buffering energy absorption and flame retardant performance, resisting external impacts and fire risks. The double-gradient braided layer uses a blended fiber design to enhance tensile strength and dynamic friction reduction, adapting to dragging and stretching conditions. The outer sheath layer, with its helical interlocking structure and graphene molybdenum disulfide modified ridge surface, enhances wear resistance and load-bearing capacity, resisting wear in complex environments. The synergistic effect of each functional layer comprehensively improves the overall performance of the cable.

This invention relates to a high-voltage cable for smart grids, applied in the field of cable technology. It includes a cable body and a heat monitoring mechanism. The heat monitoring mechanism comprises a monitoring cable segment cut from the cable body, a sealed monitoring cylinder positioned between the cable body and the monitoring cable segment, and a movable monitoring plate slidably and sealed to the sealed monitoring cylinder. An upper heat-conducting rod and a lower heat-conducting rod are respectively embedded at both ends of the sealed monitoring cylinder. A distance sensor is fixedly installed inside the sealed monitoring cylinder. The heat monitoring mechanism also includes a monitoring and analysis system. The heat monitoring mechanism can directly monitor the heat generation of the conductor in real time and automatically issue an alarm when abnormal heat generation is detected. Compared to the traditional method of monitoring cable temperature using temperature sensors, it effectively eliminates the interference and influence of environmental factors on monitoring, greatly improving the accuracy and reliability of monitoring, and thus significantly enhancing the safety of the high-voltage cable.

The utility model discloses a gourd type special cable structure of signal line with power four in one, including cable main part, the cable main part includes two steel wire ropes, two the steel wire rope both ends all are installed with a connecting assembly, the connecting assembly includes bottom plate and pressing plate, the pressing plate is hinged in bottom plate one end, the outer wall of bottom plate and pressing plate is close to all be equipped with two contact grooves, the steel wire rope passes two contact grooves, bottom plate and pressing plate movable end outside all are fixedly connected with an extension card, two the extension card is installed with same fixed structure, the fixed structure includes screw rod and locking cap, two the extension card inside all are equipped with a recess, the utility model discloses a connecting assembly can be set up, can hold up the steel wire rope fast and firmly, guarantees that the steel wire rope will not happen loosening at will, is favorable to improve the convenience of connecting process, and the dismounting process is also enough convenient, uses more convenient.

A flat wire having a rectangular cross section in a direction perpendicular to the axial direction, the flat wire comprising a flat conductor having a rectangular cross section in a direction perpendicular to the axial direction, and a coating film of an insulating coating material that directly covers the entire circumference of the flat conductor, wherein: the cross-sectional area of the flat conductor is 2.0 mm2 or more; the average thickness of the coating film of the insulating coating material is 10 to 500 μm; the insulating coating material contains a fluorine-containing polymer; the tensile modulus of elasticity of the insulating coating material is 60 to 2900 MPa; and, in the cross section of the flat wire, when a distance between a corner portion of the flat conductor and a corner portion of the coating film of the insulating coating material closest to the corner portion of the flat conductor is defined as RA, and a distance between one side of the outer periphery of the flat conductor and one side of the outer periphery of the coating film of the insulating coating material closest to the one side of the outer periphery of the flat conductor is defined as RB, RA > RB is satisfied.

The present application relates to a kind of communication cables, including including core wire and the sheath that is covered outside core wire, it is related to cable technical field, sheath is formed by gradient temperature cooling process, gradient temperature cooling process includes the three stages of high-temperature zone cooling (80 ℃±5 ℃), medium-temperature zone cooling (30 ℃±2 ℃) and low-temperature zone cooling (‑78 ℃±3 ℃) in turn;Sheath material is low-temperature modified material, when using polyvinyl chloride material, the low-temperature embrittlement temperature of polyvinyl chloride material is not less than-48 ℃, when using polyethylene material, polyethylene material still keeps good toughness at-78 ℃;Interface adhesion between core wire and sheath is optimized by gradient temperature control.The gradient cooling mechanism of the present application makes the interface molecular chain between sheath and core wire fully relaxed, and crystallization behavior is controllable, thereby realizes the high uniformity of adhesion on the length of whole cable, and peeling force is accurately controlled in the ideal interval of 0.5-2N / mm.

In one aspect, the insulating composition is an insulating composition including solids in an amount of 35% by weight or less based on the total weight, wherein the solids include inorganic particles and a polymer material, and the insulating composition has a viscosity of 4,000 mPa·s or more at a shear rate of 0.0251 s-1 and a viscosity of 400 mPa·s or less at a shear rate of 251 s-1. The insulating composition has low viscosity at high shear rates and high viscosity at low shear rates, thereby providing excellent coating processability and enabling formation of a narrow insulation width by minimizing sliding portions during insulating layer formation, which can prevent the problem of reversal of the positive electrode / negative electrode capacity ratio that may occur due to sliding portions.

The application provides a halogen-free flame-retardant cable sheath resin composition and a preparation method thereof, and belongs to the technical field of polymer composites for cables, and the preparation method comprises the following steps: S1, raw material grading pretreatment and core parameter accurate determination; S2, gradient pre-dispersion and uniformity feedback regulation; S3, stepwise grafting compatibility and grafting rate feedback regulation; S4, dynamic flame-retardant regulation and melt blending; S5, gradient cooling granulation and finished product performance verification. In the two key links of gradient pre-dispersion and dynamic melt blending, two groups of algorithms, an improved fruit fly optimization algorithm-self-adaptive fuzzy neural network and an improved sparrow search algorithm-kernel extreme learning machine, are respectively embedded, the two groups of algorithms are bidirectionally interacted and fused, the problems of empirical setting of traditional process parameters and large performance fluctuation are solved, and the uniformity, flame-retardant performance and mechanical performance of the resin composition are synergistically improved.

The application relates to the technical field of cables, and discloses a high-voltage cable with high safety performance. The cable comprises, from inside to outside, a conductor, a conductor shielding layer, an insulation layer, an insulation shielding layer, an inner buffer layer, a protective layer, a reinforcing steel cable, an outer buffer layer and an outer protective layer; the protective layer is composed of multiple groups of protective units arranged in an axial array, each protective unit is formed into a circular ring structure by multiple protective sheets arranged in a circumferential direction, the cross section of the protective sheet is in a prismatic shape, the inner and outer walls are in arc shapes, steel cable grooves are arranged on the two sides, and a hollow groove is arranged in the interior; the multiple protective units are staggered and connected to form a continuous spiral winding structure; and the reinforcing steel cable is spirally wound and embedded in the spiral channel formed by the steel cable grooves of the protective sheets. The application realizes uniform conversion and dispersion of axial tension into radial stress, and combines the design of the rhombic protective sheet and the hollow groove, so that the tensile resistance, extrusion resistance, impact resistance and cutting resistance of the cable are significantly improved, and the cable is suitable for complex laying environments.

A water-swellable semiconducting material is provided, comprising a semiconducting layer and a semiconducting water-swellable polymer layer on which the semiconducting layer is arranged. The semiconducting water-swellable polymer layer consists of conductive particles dispersed in a crosslinked superabsorbent polymer matrix. This material can be formed into tapes or other structures for insulating and protecting cables. The water-swellable semiconducting material can be applied to cables or other conductive materials to insulate them and protect the cables from water ingress.

This utility model relates to a self-supporting composite optical cable, belonging to the field of composite optical cable technology. It includes an optical cable with a connecting layer fixedly connected to its top surface. A reinforcing layer is fixedly connected to the top surface of the connecting layer. Limiting grooves are formed on both the left and right sides of the connecting layer. A limiting component for restricting the optical cable is provided on the reinforcing layer. The limiting component includes two limiting blocks, each placed inside a limiting groove. A connecting block is fixedly connected to the side of each limiting block away from the connecting layer. This self-supporting composite optical cable conveniently restricts the optical cable through the cooperation between the clamping plate and the locking plate. The sliding connection between the limiting blocks and the limiting grooves allows the mounting frame to move, adjusting its position and improving the stability of the optical cable. Simultaneously, the fit between the positioning plate and the positioning groove restricts the mounting frame, further improving its stability.

To provide an insulated wire including a coat that is thin but has excellent insulation performance and a method for producing the same, and a production method that can produce such an insulated wire at a firing temperature of 250°C or lower while reducing the environmental load and cost.SOLUTION: An insulated wire includes a conductor wire, and an insulation film that coats the conductor wire. The insulation film comprises a cured product of an aromatic (poly)ether compound comprising bisphenol A and benzophenone.SELECTED DRAWING: None

The utility model is suitable for cable technical field provides a kind of rare earth high iron aluminium alloy cable, including multiple cable core, multiple cable core is by rare earth high iron aluminium alloy conductor and first insulating layer composition, multiple first insulating layer is located multiple rare earth high iron aluminium alloy conductor's outside respectively;Filler layer being arranged at the outer wall of cable core, the anti-puncture mechanism for protecting cable core is arranged on the filler layer;Second insulating layer being arranged at the outside of anti-puncture mechanism.The rare earth high iron aluminium alloy cable provided in the scheme solves the problem of insufficient puncture resistance, cable core damage and use risk caused by sharp object collision in existing rare earth high iron aluminium alloy cable.

The utility model discloses a kind of liquid cooling charging cable, charging gun and charging pile, by including quilt, positive liquid copper tube, negative liquid copper tube, independent pipe and at least one auxiliary cooling pipe, since at least one auxiliary cooling pipe is arranged in the inner cavity of liquid cooling charging cable, and it is in structure respectively with the outer surface of positive liquid copper tube, negative liquid copper tube and independent pipe Contact abutment, to build out multiple path parallel cooling structure, increase the cross-sectional area of cooling liquid flow passage, reduce the flow resistance of liquid cooling gun internal cooling pipe, to improve cooling liquid flow, finally improve liquid cooling heat dissipation effect. That is, in the technical scheme of the application, the auxiliary cooling pipe serves as an independent cooling path (indirect cooling method), and cooperates with the main cooling flow channel (direct cooling method of the positive and negative liquid copper tube). The heat in the high-current channel of the cable can be shared, the unit cross-sectional heat density is effectively reduced, the heat dissipation uniformity is enhanced, and the stability is higher in high-power scenarios.

The application relates to the field of crosslinked polyethylene insulated power cables, and particularly discloses a water treeing resistant crosslinked polyethylene insulated power cable and a preparation method thereof. The power cable comprises a cable core and a sheath layer from inside to outside, the cable core comprises a conductor, an inner non-metal semi-conductive shielding layer, a crosslinked polyethylene insulation layer, an outer non-metal semi-conductive shielding layer and a metal shielding layer from inside to outside, and the sheath layer comprises a polyvinyl chloride sheath layer and a polyvinyl chloride outer coating layer from inside to outside; the crosslinked polyethylene insulation layer is prepared by extrusion of water treeing resistant composite masterbatch and DCP crosslinking agent. The preparation method comprises the following steps: preparing the water treeing resistant composite masterbatch; preparing the cable core; and preparing the sheath layer. The water treeing resistant crosslinked polyethylene insulated power cable can resist water treeing and simultaneously maintain good tensile strength and elongation at break.

The application relates to a high-performance aluminum-clad steel-core composite heat-resistant stranded cable, and belongs to the technical field of aluminum-clad steel-core composite heat-resistant stranded cables.The aluminum-clad steel-core composite heat-resistant stranded cable comprises a wire main body, the wire main body comprises a hollow supporting core pipe and a reinforcing stranded wire layer sleeved on the surface of the hollow supporting core pipe, two layers of conductive aluminum wire layers are wound on the surface of the reinforcing stranded wire layer, check valve bodies are equidistantly arranged in the hollow supporting core pipe, the check valve bodies are made of carbon fiber reinforced polymers, the hollow supporting core pipe is filled with helium, a supporting spiral pipe is fixedly installed on the surface of the wire main body, and compensation assemblies are arranged at the two ends of the wire main body.The application distributes the force generated by sag on the main body, reduces the structural quality while increasing the overall tensile strength, effectively reduces the fatigue micro-crack problem caused by the sag problem to the whole device, ensures the uniform distribution of the current on the outer layer of the device, and avoids the increase of line loss.

The utility model discloses a kind of steel band embossed fireproof cable, from inside to outside sequentially include core, filling layer, glass fibre layer, flame-retardant coating and sheath layer;Core from inside to outside sequentially include conductor, shielding layer and insulating layer, sheath layer includes embossed steel sheath and outer sheath.The utility model of a kind of steel band embossed fireproof cable provides multilayer protection, and the part of fireproof is not easy to be damaged, improves compression resistance and fireproof performance.

This invention discloses a fire-resistant and flame-retardant medium-voltage fireproof cable, comprising a copper tightly compressed stranded conductor, a concentrically arranged inner semiconductive shielding layer surrounding the copper tightly compressed stranded conductor, an outer semiconductive shielding layer covered by a wrapped shielding layer composed of multiple copper wires, a concentrically arranged ceramicized silicone rubber extruded isolation layer surrounding the wrapped shielding layer, an inorganic fire-resistant oxygen barrier layer concentrically arranged on the outer side of the continuous and dense covering structure, a flame-retardant glass fiber tape concentrically arranged around the outer side of the inorganic fire-resistant oxygen barrier layer to form a circumferential constraint, a corrugated metal sheath fireproof layer concentrically arranged around the flame-retardant glass fiber tape to form a sealed fit with the inorganic fire-resistant oxygen barrier layer, a low-smoke halogen-free flame-retardant outer sheath concentrically arranged around the corrugated metal sheath fireproof layer, a low-smoke halogen-free flame-retardant outer sheath concentrically arranged around the low-smoke halogen-free flame-retardant outer sheath, and a halogen-free flame-retardant nylon outer sheath concentrically arranged around the low-smoke halogen-free flame-retardant outer sheath. In summary, this invention has the advantages of excellent fire resistance and heat insulation performance, high stability of continuous protective structure, good electromagnetic shielding performance, and reliable electrical operation.

Provided in the embodiments of the present application is a megawatt parallel pipe type charging pile cable, specifically: the cable comprises a sheath assembly, a main power line, cooling pipes and core wires; wherein the cooling pipes are at least 4 in number; the sheath assembly covers the main power line, the cooling pipes and the core wires; the cooling pipes are arranged in close contact with the sheath assembly, and the cable is centrally provided with the core wires; the cooling pipes are distributed at equal intervals; the main power line comprises positive power lines and negative power lines, and the positive power lines and the negative power lines are arranged in one-to-one correspondence and symmetry; the positive power lines and the corresponding negative power lines are arranged in close contact with different cooling pipes, respectively. The present application adopts a multi-core split design for the main power line comprising positive power lines and negative power lines, each independent core wire is closely attached to the outer wall of the cooling pipe, heat conduction is strengthened through direct contact, and heat is efficiently transferred vertically to the cooling liquid.