68 results about "Filled cable" patented technology

The invention relates to the technical field of power cables, and particularly discloses a high-strength corrosion-resistant power cable and a preparation method thereof, the high-strength corrosion-resistant power cable comprises a central tube made of ceramic silicone rubber, and the high-strength corrosion-resistant power cable also comprises a sheath layer. In a normal working state, the conductors are in a dispersed state, the overall temperature of the cable during working is greatly reduced through the dispersed conductors, and in combination with the working environment of the cable, the low-temperature state of the cable during working is further ensured through mutual cooperation of water flow and the dispersed conductors, so that the service life of the cable is greatly prolonged; the problem that water enters the interior of the cable due to expansion and fracture of the sheath layer due to uneven heat and cold caused by the fact that the cable is in a high-temperature working environment for a long time is avoided, meanwhile, when the cable works, the injection cavity is filled with insulating oil, the flowing cavity in the sheath layer is also filled with the insulating oil through the communicating pipe, and the insulating oil can fill gaps in the cable to form a liquid insulating layer; the insulation performance of the cable is improved, and moisture and corrosive substances are prevented from invading.

The invention relates to the technical field of fire-resistant cables in a dynamic environment, and provides a fire-resistant cable suitable for a floating power generation ship in a dynamic environment, which comprises a cable core and a cable outer protection layer, a plurality of cable cores are arranged in the cable outer protection layer, after the cable cores are arranged in the cable outer protection layer, a filling layer is arranged in gaps among the cable cores, and the filling layer is formed by fixedly filling a plurality of strands of filling ropes in the gaps through a water-blocking material; the filling layer can effectively fill gaps among the cable cores, the multiple strands of filling ropes are fixedly filled in the gaps through the water-blocking material, and the filling ropes in the filling layer can absorb water and expand to fill the gaps, so that the water-blocking performance is further improved, and the service life of the cable is prolonged. Through the structure, the structural stability of the cable can be enhanced, the tensile and bending resistance performance is improved, the fireproof performance of the cable is improved, and the water-blocking, moisture-proof and anti-corrosion performance is enhanced.

The utility model provides a cabin-penetrating cable tube assembly and a ship with the cabin-penetrating cable tube assembly, the cabin-penetrating cable tube assembly comprises a cabin-penetrating tube, two ends of the cabin-penetrating tube are both provided with first waterproof sealing members capable of expanding when encountering water, the first waterproof sealing members are used for filling a gap between a cable and the tube wall of the cabin-penetrating tube, and a filler cavity is defined by the cabin-penetrating tube and the two first waterproof sealing members; and the filling cavity is used for being filled with a waterproof sizing material, the waterproof sizing material located in the filling cavity forms a second waterproof sealing piece after being cured, and injection holes and exhaust holes which are distributed at intervals are formed in the pipe wall of the cabin penetrating pipe and communicate with the filling cavity. According to the cabin-penetrating cable pipe assembly and the ship with the cabin-penetrating cable pipe assembly, the watertight performance of the cabin-penetrating pipe is improved, meanwhile, the whole cabin-penetrating pipe does not need to be filled with filler, the using amount of the filler and the filling operation difficulty of the filler in the cabin-penetrating pipe are reduced, and then the waterproof sealing cost of the cabin-penetrating pipe is reduced.

The invention relates to the technical field of cables, in particular to a composite shielding cable which comprises a plurality of wires used for transmitting signals. The filling layer is used for filling gaps in the cable; the composite shielding layer is used for homogenizing an electric field and isolating external electromagnetic interference; the reinforcing layer is used for improving the mechanical strength of the cable; the outer protective layer is used for enhancing the mechanical property of the cable; the composite shielding layer is of a metal and fiber multi-axial mixed braided structure; the reinforcing layer is formed by weaving ultra-high molecular weight polyethylene fibers and para-aramid fibers. According to the composite shielding cable, the composite shielding layer can reduce the weight and thickness of the cable and realize light weight, and the reinforcing layer can realize high temperature resistance and reduce the cost. Through a double-braided structure of the composite shielding layer and the reinforcing layer, a traditional shielding layer and glass fiber reinforcing structure can be replaced, on the basis of ensuring high shielding performance, the mechanical strength of the cable is effectively improved, and meanwhile, the safety of a cable production and processing environment is ensured.

A method, system, medium and product for analyzing oil leakage at an oil-filled cable terminal relate to the field of electrical digital data processing. In implementing this application, the detection system collects the temperature values ​​of each sensor based on the sensor array arranged longitudinally on the inner side of the closed structure of the oil-filled cable terminal, calculates the temperature difference sequence, and extracts the characteristic parameters of the temperature field in the closed structure. The detection system corrects the finite element simulation results in combination with the current ambient temperature and the current load current, and obtains the corresponding relationship between the oil leakage temperature under actual working conditions, thereby accurately reflecting the oil leakage situation under actual working conditions. This oil leakage analysis method based on the corresponding relationship between the temperature field characteristic parameters and the oil leakage temperature under actual working conditions avoids the limitations of traditional detection methods that rely solely on oil level gauges and float switches for detection, improves the perception ability of slow leakage and the accuracy of quantitative analysis, can timely and accurately discover oil leakage hazards, prevent accidents, and improve the accuracy and reliability of oil leakage detection.

The invention discloses a piezoelectric circular tube transducer which comprises a piezoelectric ceramic circular tube. The pre-amplifier is arranged in the fixed structural member; the fixing structural member is filled with an elastic material so as to elastically fix the pre-amplifier; the fixed structural member is arranged in the piezoelectric ceramic circular tube, the fixed structural member is sealed at one end of the piezoelectric ceramic circular tube, and the other end of the piezoelectric ceramic circular tube is sealed by an end cover; the first metal lead terminal is inserted into the lead terminal jack of the fixed structural member, and a signal output lead of the pre-amplifier is electrically connected with the first metal lead terminal; a second metal lead terminal is inserted into a corresponding lead terminal jack of the fixed structural member, and a power supply lead of the pre-amplifier is electrically connected with the second metal lead terminal; an input lead of the pre-amplifier is connected with a positive electrode lead of the piezoelectric ceramic circular tube; and a negative lead of the pre-amplifier is connected with a negative electrode lead of the piezoelectric ceramic circular tube. External electromagnetic noise can be effectively isolated.

The present invention relates to the technical field of cable preparation, and particularly relates to a water-resistant aluminum alloy core photovoltaic cable and its preparation process. The preparation process includes the following steps: preparing modified epoxy resin; preparing a copolymer from hydroxypivalic acid neopentyl glycol monoester and butyl glycidyl ether; preparing cable sheath filler; and preparing a water-resistant aluminum alloy core photovoltaic cable. In the present invention, a copolymer is prepared from hydroxypivalic acid neopentyl glycol monoester and butyl glycidyl ether. After the two are combined and participate in the curing reaction, it not only improves the flexibility of the epoxy resin, but also significantly improves its impact strength and heat resistance. The highly flexible filler fills the voids inside the cable, reduces air gaps, and prevents them, thereby improving the overall insulation performance of the cable. The good heat resistance of the filler enables it to maintain good mechanical properties in the high-temperature environment caused by the long-term use of the cable, and extends the service life of the cable.

The utility model relates to an underwater oil leakage first-aid repair device applied to an oil-filled cable, and belongs to the technical field of cable first-aid repair, the underwater oil leakage first-aid repair device comprises an upper oil tank shell, a lower oil tank shell, an upper glue pouring shell, a lower glue pouring shell, a glue injection port, an oil discharge port and a sealing mechanism, the upper oil tank shell is arranged on the cable, the lower oil tank shell is detachably arranged on the upper oil tank shell, and the lower oil tank shell is detachably arranged on the lower oil tank shell. The upper glue filling shell flange is arranged on the upper oil tank shell, the upper glue filling shell is located at the cable oil seepage position, the lower glue filling shell flange is arranged on the lower oil tank shell, the glue filling opening is formed in the upper glue filling shell in a communicating mode, and the oil discharging opening is formed in the upper oil tank shell in a communicating mode. And the sealing mechanism is arranged on the lower glue filling shell and is used for sealing the upper glue filling shell and the lower glue filling shell. According to the invention, the problem that the marine environment is polluted due to the fact that the oil-filled cable is difficult to maintain underwater is solved.

The invention discloses an umbilical cable sealing end cover component and a submarine optical cable connector box, which are used for solving the problems of difficult assembly, poor sealing performance and insufficient pressure resistance of connection of an umbilical cable and an oil-filled cable in a deep sea environment. The end cover component comprises a connecting sleeve with a front cavity and a rear cavity, the rear cavity is provided with a tensile fixing assembly, axial stress is dispersed through slope self-locking, and a center pipe sealing assembly is installed to achieve high-pressure sealing through conical thread pressing. A two-stage outer sheath sealing assembly is arranged in the front cavity and is fixed by a sealing nut or a pressing piece; the optical fiber passes through the support to protect the steel pipe fiber outlet. According to the connector box, the outer cylinder body and the end cover part are rapidly assembled through the locking part, and the connector box is matched with an oil-filled cable end cover sealing part, so that multi-layer compression-resistant sealing, optimized stress distribution and stable optical signal transmission are realized.

This invention provides a water-filled cable trench and its laying structure, comprising: a main shell disposed in a mudflat section, the main shell having a receiving cavity; a wiring hole disposed on the main shell, the wiring hole communicating with the receiving cavity, through which the submarine cable passes through the main shell; and a water inlet disposed on the main shell, communicating with the receiving cavity, and the water inlet being located above the wiring hole. This design uses the main shell to form a receiving cavity for the submarine cable to pass through. During high tide, seawater submerges the main shell, and seawater enters the receiving cavity through the water inlet. The submarine cable passing through the receiving cavity is in direct contact with the seawater, which absorbs the heat emitted by the cable, thus aiding in heat dissipation. During low tide, the seawater leaves the mudflat section, but a certain amount of seawater remains in the receiving cavity. Therefore, the submarine cable remains surrounded by seawater and can still maintain effective heat dissipation through the seawater.

To provide a diagnostic method for highly accurately evaluating a degree of risk of abnormality occurrence of an oil-filled cable.SOLUTION: A diagnostic method includes: a step 1 of creating a trend graph; a step 2 of obtaining a maximum amount of copper dissolved in oil; and a step 3 of obtaining an amount of reduction from the maximum amount of copper dissolved in oil, and evaluates a degree of risk of abnormality occurrence from evaluation results of at least characteristic values (a) to (c) based on preset respective reference values in an oil-filled cable evaluated as in need of diagnosis. The diagnostic method has a step 1 of preparing a trend graph, and evaluates the degree of risk of the abnormality occurrence by evaluation results of evaluating at least characteristic values (f) to (i) based on respective preset reference values in the oil-filled cable evaluated as in need of diagnosis.SELECTED DRAWING: Figure 1

The invention discloses an oil-filled cable terminal oil leakage analysis method and system, a medium and a product, and relates to the field of electric digital data processing. According to the application, the detection system collects the temperature value of each sensor according to the sensor array longitudinally arranged at the inner side of the oil-filled cable terminal closed structure and calculates the temperature difference sequence so as to extract the temperature field characteristic parameters in the closed structure. And the detection system corrects the finite element simulation result by combining the current environment temperature and the current load current to obtain the corresponding relation of the oil leakage temperature under the actual working condition, so that the oil leakage condition under the actual working condition is accurately reflected. According to the oil leakage analysis method based on the corresponding relation between the temperature field characteristic parameters and the actual working condition oil leakage temperature, the limitation that detection only depends on an oil level gauge and a float switch in a traditional detection method is avoided, the slow leakage sensing capacity and quantitative analysis precision are improved, oil leakage hidden dangers can be accurately found in time, accidents are prevented, and the oil leakage detection efficiency is improved. And the accuracy and the reliability of oil leakage detection are improved.

The application relates to the technical field of power cables, and particularly discloses a high-strength corrosion-resistant power cable and a preparation method thereof, which comprises a center tube made of ceramic silicone rubber and a sheath layer. In a normal working state, the conductor is in a dispersed state, the overall temperature of the cable during work is greatly reduced through the dispersed conductor, the working environment of the cable is combined, water flow and the dispersed conductor are mutually cooperative, the working state of the cable is further ensured to be low-temperature, the service life of the cable is greatly improved, the problem that the sheath layer is broken due to uneven expansion caused by cold and heat, and water enters the inside is avoided, when the cable works, the cavity is filled with insulating oil, the flowing cavity in the sheath layer is also filled with insulating oil through the communicating pipe, the insulating oil can fill the gaps in the inside of the cable, a liquid insulation layer is formed, the insulation performance of the cable is improved, and water and corrosive substances are prevented from invading.

The utility model relates to a photoelectric composite cable suitable for an unmanned aerial vehicle platform. The photoelectric composite cable comprises a wrapping layer formed by wrapping a covering film, an accommodating space is formed in the wrapping layer, a two-core electric unit and a one-core single-mode optical fiber are respectively placed in the accommodating space, and a plurality of aramid fiber filling cabling are distributed in the accommodating space; an insulating layer is distributed on the electric unit, an outer wrapping layer is distributed on the single-mode optical fiber, and the insulating layer, the outer wrapping layer and the covering film are all made of high-temperature-resistant fluoroplastic formed by ethylene-tetrafluoroethylene copolymer; the thickness of the covering film is 0.05 mm, and the total thickness after wrapping is 0.10 mm + / -0.02 mm; the outer diameter of the photoelectric composite cable is 2.2 mm + / -0.1 mm, and the total weight per meter is smaller than or equal to 12 g. Therefore, the whole photoelectric composite cable has better high temperature resistance, can meet high tensile strength under the condition of light weight, can realize low-loss signal transmission, and has better heat dissipation effect.

The invention provides a novel B1-level fire-resistant and high-temperature-resistant flexible cable and a production method thereof, the novel B1-level fire-resistant and high-temperature-resistant flexible cable comprises a flexible conductor, the appearance of the flexible conductor is a surrounding type fixed wire diameter of which the cross section is provided with two straight edges and an arc-shaped edge, the flexible conductor is externally coated with ceramic silicone rubber, the ceramic silicone rubber is externally coated with a silicone rubber insulating tape in an attached manner, and the silicone rubber insulating tape is provided with a sheath. A glass fiber tape is arranged outside the silicone rubber insulating tape, and a B1-level protective sleeve is fixedly arranged outside the glass fiber tape in a wrapping manner; the flexible conductors are made of one of class 5 copper, tinned copper or aluminum alloy conductor materials, the flexible conductors with the sector-like external sections are arranged, B1-level optimization requirements of fire resistance and flexibility of a single-phase filling cable and a four-phase filling cable are met, and the cable can be applied to use scenes with high-level fireproof safety.

The utility model discloses an oil-filled cable, and particularly relates to the technical field of cables, the oil-filled cable comprises an oil-filled cable body used for a high-frequency computer, and a supporting assembly used for avoiding abrasion is arranged outside the oil-filled cable body; the supporting assembly comprises a plurality of fixing pieces, the fixing pieces are all arranged outside the oil-filled cable body, and a plurality of supporting pieces distributed at intervals are installed on the sides, away from the oil-filled cable body, of the fixing pieces; each supporting piece comprises two fixing plates, a fixing shaft and a roller, and the rollers are arranged outside the fixing shafts in a sleeving mode. According to the utility model, the oil-filled cable body can be supported and lifted through the arrangement of the plurality of supporting pieces on the fixing piece, meanwhile, the oil-filled cable body can be conveniently pulled to move from multiple directions by a worker through the rollers which are obliquely arranged on the supporting pieces, and the friction between the oil-filled cable body and the outside can be reduced; damage to the outside of the oil-filled cable body due to excessive friction is avoided, and the integrity and the use effect of the oil-filled cable body are ensured.

The invention relates to the technical field of high-voltage submarine cables, and discloses an oil-filled cable freezing span and freezing time control method which comprises the following steps: acquiring basic parameters such as a cable system, field working conditions and freezing conditions; for a given freezing span, acquiring key thermodynamic parameters based on the parameters, including radial thermal resistance, longitudinal thermal resistance, total heat capacity including latent heat of solidification and heat carried by oil flow; establishing a heat balance differential model for describing the temperature change of the freezing center point based on the thermodynamic parameters; and solving the model to obtain an expression that the temperature changes along with time, and deducing the freezing time corresponding to the given freezing span by setting the final temperature as an oil freezing point. According to the method, the thermodynamic model which introduces the experimental calibration correction coefficient is constructed and solved, so that accurate quantitative calculation of the freezing operation core parameters is realized, freezing failure is effectively avoided, and resource consumption is optimized.

The invention discloses a portable calibration device for an oil-filled cable, and relates to the technical field of calibration equipment for the oil-filled cable, which comprises a sensor body, a connector and a connecting wire, a base body is mounted at the bottom of a wall body in the sensor body, a diaphragm is mounted at the top of the base body, a silicone oil piece is connected to the diaphragm, and an adhesive is arranged on the upper surface of the base body on two sides of the silicone oil piece. The silicon wafer is fixed on the upper surface of the base body in the sensor body through adhesive, the circuit board is installed on the end face of the silicon wafer, the signal line base is arranged on the end face of the circuit board, the anti-collision buffering piece arranged through double-faced adhesive tape in an adhesive mode can protect the sensor body, and the phenomenon that the sensor body is damaged by external factors is further avoided. Through the combined use of a buffer shock absorption layer and buffer cotton in the anti-collision buffer piece, when the sensor body is subjected to external impact force, the impact force is reduced, and the force is absorbed and dispersed, so that components in the sensor body cannot be damaged under the action of the impact force.

The invention relates to a method for manufacturing a cable comprising a core wire covered with an inner layer of several inner wires and an outer layer of several outer wires, the method comprising the steps of: - unwinding the core wire from a core wire reel and introducing it into an initial assembly device, this initial assembly device comprising a feeding pod mounted between two rotating flywheels and an assembly bead, the inner wire reels and the assembly bead being supported by the feeding pod, - assembling the inner wires of the inner layer and the core wire with the initial assembly device, - extracting from the initial assembly device the semi-finished cable comprising the core wire assembled with the inner wires, - introducing said semi-finished cable into a final assembly device, said final assembly device comprising a fixed rack supporting the outer wire reels.An assembly unit and a finished cable receiving device comprising a receiving pod mounted between two rotating flywheels and supporting a finished cable receiving reel; assembling the outer wires of the outer layer to the semi-finished cable with the assembly unit of the final assembly device; winding the finished cable onto the receiving reel. Figure in the abstract: none.

Deep sea oil-filled cable connected pressure compensation pressure battery and compensation method, including a plurality of parallel arranged pressure battery module, the structure of a single pressure battery module is: including battery unit, its outside is provided with battery module pressure shell, insulation oil cavity is formed between the outer wall of battery unit and the inner wall of battery module pressure shell, insulation oil is injected in the insulation oil cavity, the compensation oil bag is installed in one end of the battery module pressure shell and communicates with the insulation oil cavity, the other end of the battery module pressure shell is connected with the oil-filled cable flange connector through bolt, the adjacent two pressure battery modules are connected by cable, the outside of the cable is provided with rubber hose, the energy supply of deep sea submersible at any depth is realized and the pressure compensation self-balancing is realized, the specific energy of the battery pack is improved, the deep sea submersible can carry more energy under the same conditions, the endurance and operation ability of the deep sea submersible are improved, and the pressure bearing reliability is high, and the battery safety is high.

SOLUTION: Techniques described herein relate to systems and methods for obtaining a high temperature superconducting (HTS) cable assembly and filling the HTS cable assembly with a molten metal, such as solder.SELECTED DRAWING: Figure 1A

The invention relates to the technical field of high-voltage cable operation and maintenance management, and discloses a method and a system for acquiring a temperature rise time constant of an oil-filled cable, and the method comprises the steps: building a current rising and temperature measuring system, an oil pressure and oil flow system and a temperature control system, synchronously regulating and controlling the current, oil flow rate, oil pressure and environment temperature of the oil-filled cable, and obtaining the temperature rise time constant of the oil-filled cable. And acquiring temperature data of the oil-filled cable, and calculating a temperature rise time constant after fitting. The system corresponds to the method. According to the invention, by synchronously controlling current, oil flow, oil pressure and environment temperature and simulating real scenes of the oil-filled cable under different operation conditions, the temperature rise rule of each part of the cable can be comprehensively captured, and by synchronously collecting temperature data of multiple parts, the temperature rise time constant can be accurately calculated, so that a reliable basis is provided for quantitative evaluation of the thermal stability of the cable; and the safety of the testing process is ensured through the design of a sealed heat preservation box, sealed thermocouple leading-out and a closed-loop oil flow loop.

The invention relates to an oil-filled-cable adapter comprising: a transition sleeve having an open end for connecting the oil-filled-cable adapter to an oil-filled cable, and a threaded end opposite the open end; a hose element, a first section of the hose element surrounding at least the open end; a first clamp which secures the first section of the hose element to the transition sleeve; and a second clamp for securing a second section of the hose element to the oil-filled cable. The invention also relates to an oil-filled cable which is connected to an oil-filled-cable adapter, and to a system for cleaning an oil-filled cable.

The invention relates to the technical field of cable terminals, and provides a stress cone and capacitance cone split type terminal device of an oil-filled cable and an installation method, and the terminal device comprises a stress cone and a capacitance cone which are split. The stress cone is formed by wrapping a plurality of paper tubes with different preset heights on site, the preset height of the paper tube on the innermost layer is the longest, and the preset height of the paper tube on the outermost layer is the shortest; the upper conical surface of the stress cone is an inclined surface and is tightly combined with the capacitance cone; the lower conical surface of the stress cone is a set stress curved surface, and the surface of the set stress curved surface is covered with a metal ground screen and is connected with a capacitance cone end screen and a cable lead layer. The capacitor cone is formed by rolling a whole piece of insulation paper, and a preset number of aluminum foils or capacitive screens are arranged every preset layers of insulation paper during rolling; and insulating oil is filled outside the stress cone and the capacitance cone to form an insulating filling area. The maintenance cost of the cable terminal is reduced, and the maintenance efficiency of the cable terminal is improved.

The utility model relates to the technical field of cables, and discloses a low-heat-release B2-grade polyvinyl chloride insulated cable for buildings, which comprises a plurality of conductors, insulating layers are fixedly connected outside the plurality of conductors, a same filling layer is fixedly connected outside the plurality of insulating layers, a wrapping tape is fixedly connected outside the filling layer, and the wrapping tape is fixedly connected outside the plurality of conductors. The outside of the wrapping tape is fixedly connected with an anti-puncture layer, the outside of the anti-puncture layer is fixedly connected with a buffer layer, and the outside of the buffer layer is fixedly connected with a sheath. According to the utility model, the conductors are isolated through the insulating layers to prevent current leakage and reduce heat release in case of fire, the filling layer fills gaps of the cable to enhance mechanical properties and heat dissipation, and the puncture-proof layer prevents the cable from being punctured, so that a stable and safe power transmission effect is realized, the safety risk in the power transmission process is reduced, and the fire hazard is reduced; the adaptive capacity of the cable in a complex environment is enhanced, and reliable operation of the cable in a building is guaranteed.

The cable lean management and control method and platform based on the one-stop display of maintenance information includes step 1: data collection, collecting cable load data, cable infrared temperature measurement data, ambient temperature, ambient humidity and cable rated voltage at the current and historical moments; step 2: data processing, building a database, matching and filling the cable real load data for the moment when the cable load data is missing; step 3: model construction, building a cable temperature prediction model; step 4: temperature prediction, calculating the predicted normal temperature of the cable at the current moment, and the predicted normal temperature range of the cable; step 5: defect judgment, comparing whether the infrared temperature measurement data of the cable at the current moment falls within the predicted normal temperature range of the cable; step 6: defect management, combining the power outage plan to complete the cable defect maintenance. The present invention realizes the deep intelligent arrangement of key information of cable maintenance, which can effectively assist the first-line maintenance of cable production to make accurate decisions and improve the quality and efficiency of work.

This invention discloses a method, equipment, and medium for simulating and calculating the surface temperature and conductor temperature of cables. The invention constructs a first temperature calculation model for cables operating under DC conditions and a second temperature calculation model for cables operating under AC conditions. Depending on the cable's operating condition, the surface temperature and conductor temperature of the cable are calculated in real time using either the first or second temperature calculation model. The calculated values ​​are then compared and verified using actual measured values ​​of the cable's surface and conductor temperatures. This invention constructs temperature calculation models corresponding to different operating conditions for cables, enabling dynamic simulation calculation of the internal conductor and surface temperatures of cables during load operation and power changes. The calculated values ​​are then compared and verified using actual measured values ​​of the surface and conductor temperatures, thereby achieving accurate temperature calculation and condition assessment for oil-filled cables.

The utility model discloses a high-flame-retardant fireproof multi-cable-core control cable which sequentially comprises an outer sheath, an oxygen isolation layer, an aluminum-plastic composite belt wrapping layer, a second shielding layer, a second wrapping layer, a first shielding layer and a first wrapping layer from outside to inside, a center supporting rope and a plurality of first cable cores are arranged in the first wrapping layer, a center tensile rope is arranged in the center of the center supporting rope, and a plurality of second cable cores are arranged in the center tensile rope. A plurality of second cable cores and a plurality of filling cables are arranged in the second wrapping layer, the filling cables are made of low-smoke halogen-free flame-retardant materials, and the oxygen isolation layer is a low-smoke halogen-free oxygen isolation layer. The control cable disclosed by the utility model has relatively good flame-retardant performance and fire-resistant performance, and is suitable for places with relatively high fire-fighting requirements; the multi-layer shielding layer structure enables the cable to have good shielding performance; the number of the first cable cores and the number of the second cable cores are large, so that the information transmission quantity of the cable is effectively increased, the number of the filling cables can be selected, and the number of the second cable cores can be selected and controlled during production.

The invention provides an accelerated degradation test device and method for an insulating material of a high-voltage oil-filled cable terminal, researches, designs and simulates a detachable high-voltage cable oil-filled terminal and a matched monitoring device, and creates an oil-filled terminal inner cavity environment with voltage, current, temperature and pressure higher than normal operation voltage, current, temperature and pressure and high humidity, high temperature and high oxygen through manual adjustment. And the surface temperature and pressure change conditions of the stress cone are monitored across the air, so that accelerated degradation and damage tests can be carried out in a short time, the damage conditions of other component structures in the oil-filled terminal can be detected in time, and the defect that the prior art cannot test the oil-filled terminal of a high-voltage cable, especially high voltage and ultrahigh voltage of 220kV and above, and the like is overcome. The device can effectively monitor and screen products and suppliers such as a stress cone, an insulation wrapping tape, insulation paint, other insulation assemblies and a conducting rod in an extra-high voltage cable oil-filled terminal, and has important significance for ensuring safe operation of the high voltage cable oil-filled terminal in reality.

The invention provides a conductor temperature measurement method and system, terminal equipment and a storage medium. The method comprises the steps that an optical fiber sensor is arranged in a conductor oil duct of a to-be-measured oil-filled cable in advance; wherein the optical fiber sensor comprises an optical fiber and a sensor probe, and the sensor probe is located at the tail end of the conductor oil duct; a pulse light signal with a preset wavelength is transmitted to the near end of the optical fiber sensor, so that the pulse light signal is transmitted to the sensor probe through the optical fiber; wherein the tail end of the oil-filled cable to be detected is provided with transmission isolation control equipment which is connected with the optical fiber sensor; acquiring a feedback light signal of the sensor probe based on the pulse light signal, and converting the feedback light signal into a real-time temperature value of the oil-filled cable to be detected according to a pre-calibrated light-temperature relation curve; wherein the light-temperature relation curve is a relation curve that the light intensity is attenuated along with time. According to the invention, the conductor temperature measurement accuracy under the application scene of the oil-filled cable can be improved.