46 results about "Composite insulators" patented technology

The application belongs to the field of power devices, and discloses an optical fiber composite insulator sample, a preparation method thereof, a partial discharge test system and a method, which comprise a transparent shell, a filling paste injection hole is formed in the transparent shell, a first optical fiber passing hole and a second optical fiber passing hole are respectively formed at two ends of the transparent shell, an optical fiber, one end of the optical fiber passes through the first optical fiber passing hole and the second optical fiber passing hole in sequence, and a filling paste, the filling paste is filled in the transparent shell through the filling paste injection hole, and a cavity with a preset structure is arranged in a preset region between the filling paste and the optical fiber. A simulation structure simulating a core rod of an optical fiber composite insulator is formed through the transparent shell, the optical fiber and the filling paste, partial discharge tests can be carried out under laboratory conditions, not only discharge signals can be detected, but also a partial discharge process can be visually observed, and the problem that the existing optical fiber composite insulator cannot be directly used for laboratory partial discharge tests can be effectively solved.

The application discloses an HTV silicone rubber material and application thereof, and the HTV silicone rubber material comprises the following components in parts by weight: methyl vinyl silicone rubber 100 parts; reinforcing agent 25-40 parts; aluminum hydroxide 70-90 parts; and other additives 11-23 parts. The HTV silicone rubber material is prepared by compounding the specific content of the methyl vinyl silicone rubber, the reinforcing agent and the specific content of the compounding aluminum hydroxide with different particle sizes and surface activities, and supplemented by the specific content of the other additives. Compared with the existing HTV silicone rubber material applied to the extra-high voltage composite insulator under high humidity and heat working conditions, the glue content of the prepared HTV silicone rubber material is obviously improved, the water absorption and dielectric loss are obviously reduced, the wet heat aging resistance is excellent, and the abnormal heating phenomenon of the extra-high voltage composite insulator under high humidity and heat working conditions is effectively prevented.

This invention discloses a composite insulator skirt design method that adapts to different icing zones and coordinates with hot water jet de-icing, relating to the field of transmission line insulator technology. Addressing the problems of fixed umbrella shape parameters, poor adaptability to different icing zones, and susceptibility to ice flashover caused by icing bridging in existing composite insulators, this invention employs a modular, graded, and adjustable umbrella skirt assembly in its main composite insulator structure. Differentiated umbrella diameter, tilt angle, and spacing parameters adapt to the icing characteristics of light, medium, and heavy icing zones, while simultaneously coupling and adapting with the parameters of hot water jet de-icing technology. This invention achieves coordinated icing suppression and hot water jet de-icing in different icing zones, delaying icing bridging, increasing ice flashover field strength, and reducing operation and maintenance costs through modular design, ensuring the safe and stable operation of transmission lines in icing areas.

This invention discloses a method for detecting and analyzing insulator defects based on ultrasonic non-destructive testing, comprising the following analytical steps: S1, obtaining simulated insulator defect samples through experimental simulation; S2, acquiring ultrasonic testing data of the simulated insulator defect samples; S3, performing noise reduction and signal enhancement processing; S4, constructing an insulator defect detection model for complex feature extraction and pattern recognition; S5, detecting live insulators to obtain defect classification and identification results; S6, calculating defect depth and lateral positioning using the T-ultrasonic velocity model, and estimating defect size by combining amplitude information; S7, performing high-resolution visualization imaging of internal defects in the insulator. This invention significantly reduces equipment downtime and lowers the risks associated with working at heights and in strong electric field environments through non-contact, live-line detection, thereby significantly improving the efficiency and safety of composite insulator defect detection.

The application belongs to the technical field of power equipment insulation, and is especially a composite insulator for power overhead line, which comprises a core rod, the core rod is rigidly arranged, and the two ends of the core rod are fixedly connected with a first fitting and a second fitting respectively, the first fitting is used for being connected with a tower, and the second fitting is used for hanging a conductor, a full-peripheral sealing patch is fixedly attached to the outer surface of the core rod along the length direction; and an umbrella skirt body, the umbrella skirt body is a one-piece molding structure of silicon rubber, and the inner side wall of the umbrella skirt body is adapted to the outer surface of the full-peripheral sealing patch. The application has the advantages of reliable sealing performance, high mechanical strength, good pollution flashover resistance, convenient installation and maintenance, and can effectively prevent water, dust and corrosive medium from invading, improve the stability and service life of the insulator in complex environment, and meet the high performance requirements of the power overhead line on the insulating components.

The present application relates to composite insulator production technical field, especially a kind of composite insulator forming compact device, including machine body, the machine body top is provided with working plate, lower mould and upper mould, it further includes self-adapting adjusting frame, symmetrically set in the top left and right sides of working plate.The present application, support block and its ball are installed on the self-adapting adjusting frame formed by four connecting rods hinged, utilize the weight of mandrel directly as leveling driving force: when mandrel is placed to support block top by limiting plate, the controlled deformation settlement of parallelogram is generated by the depression of weight side, and the parallelogram mechanism itself ensures that its top bearing plane and bottom plane continuously maintain parallel posture, so the front and rear ends of mandrel reach the same height reference surface matched with lower mould inner mould groove at the end of settlement, automatically complete the coaxial centering of mandrel axis relative to mould groove, fundamentally reduce the initial posture error of one end sinking, improve the coaxiality of compact and wall thickness uniformity.

The utility model relates to insulator technical field especially is a wireless energy transmission device of application composite insulator, it includes insulator body, electricity taking connection subassembly and electricity connection subassembly, one end of insulator body is provided with first fitting, the other end of insulator body is provided with second fitting, insulator body is spaced apart with a plurality of coil board along its length direction, and each coil board is encapsulated with coil body, electricity taking connection subassembly includes electricity taking support and the electricity taking cable of installing on electricity taking support, and electricity connection subassembly includes electricity taking support, electricity cable and electric energy storage device. The utility model novel structure, clever design, through along the coil board of the length direction interval arrangement of multiple embedded coils of insulator body, form distributed magnetic resonance coupling path, realize high voltage side to low voltage side's non -contact energy transmission, solve the problem that traditional technology frequently replaces battery, power supply stability is influenced by weather or is power supply power limited.

This invention discloses a method for process optimization and performance prediction of composite insulator silicone rubber, comprising the following steps: S1. Obtaining performance parameters of silicone rubber with the same composition as the silicone rubber to be predicted under different vulcanization times, temperatures, and pressures; S2. Based on the performance parameters obtained in step S1, determining the optimal vulcanization process conditions within the experimental range; S3. Obtaining a first silicone rubber performance prediction model using the least squares method based on the performance parameters, and then introducing the Arrhenius equation into the first silicone rubber performance prediction model to obtain a second silicone rubber performance prediction model; S4. Based on the first and second silicone rubber performance prediction models, inputting the vulcanization conditions to complete the silicone rubber performance prediction. This invention provides theoretical guidance for production processes and achieves accurate performance prediction.

The utility model relates to die structure technical field especially is a kind of crimping die of adaptation multi-size composite insulator pillar, it includes upper die component and lower die component, lower die component includes lower die pressing plate, fixed assembly and adjusting assembly, fixed assembly is installed in the one end on lower die pressing plate, adjusting assembly is movably arranged on the other end on lower die pressing plate, fixed assembly and adjusting assembly are in direct opposite setting, composite insulator pillar positioning is placed between fixed assembly and adjusting assembly, adjusting assembly is used to adjust the spacing between fixed assembly and adjusting assembly, a row of spacing is provided with several limit slots on lower die pressing plate, and locking assembly is detachably installed on one limit slot;Upper die component includes upper die pressing plate, and the two ends of composite insulator pillar are crimped by the cooperation of upper die pressing plate and lower die pressing plate.The utility model structure is novel, improves use flexibility and universality, can reduce die changing time, is favorable for improving production efficiency to reduce production cost.

This invention relates to the field of intelligent power line inspection technology, and particularly to a method, system, electronic device, and medium for identifying the type of thermal defects in composite insulators. The method includes: acquiring infrared image data of a target composite insulator; performing insulator target detection and semantic segmentation to obtain the main outline of the insulator; extracting a heating region from the main outline of the insulator, and determining whether a thermal defect exists based on a comparison of the temperature characteristics of the heating region with a preset threshold; if a thermal defect exists, calculating positional parameters based on the spatial relationship between the heating region and the end region of the insulator; and determining the type of thermal defect based on the positional parameters. This approach solves the problem of insufficient accuracy in identifying the type of thermal defects in composite insulators in existing technologies for UAV inspection scenarios, improving the accuracy of thermal defect identification and the reliability of risk classification.

The application discloses a kind of multispectral image fusion composite insulator operating state evaluation method and system, method includes: according to insulator structure parameter and operating voltage to construct standard state atlas;From ultraviolet image, extract actual discharge distribution, from infrared image, extract actual temperature distribution, from visible light image, extract actual water droplet distribution;Actual atlas is compared with standard atlas point by point, calculate discharge deviation degree, temperature deviation degree and hydrophobic deviation degree;Three kinds of deviation degrees are carried out spatial superposition analysis, identify high co-occurrence area, moderate co-occurrence area and isolated deviation area;According to co-occurrence mode, the deterioration type is reversed, including end pollution accumulation type, grading ring failure type, internal defect type, overall aging type and local damage type;Output deterioration type, deviation degree spatial distribution and risk level.The physical interpretable inversion of deterioration type is realized, and the problem that the prior art evaluation lacks benchmark and cannot distinguish deterioration type is solved.

The application discloses a lightweight suspension string for extra-high voltage AC transmission lines, belongs to the field of electric power fittings, and is used for electric power transmission. The suspension string comprises a suspension clamp, a conductor cover is located at the connection position of a conductor and the suspension clamp and extends along the conductor for a certain distance, the suspension clamp is arranged on a suspension link plate, the suspension link plate is arranged at the two ends of a link plate C, the link plate C is connected with a voltage grading ring through a bowl head hanging plate, the voltage grading ring is connected with a ball head hanging plate through a composite insulator, the ball head hanging plate is connected with a right-angle hanging plate B through a link plate B, the link plate B is connected with the bottom two ends of a link plate A through a parallel hanging plate, the top two ends of the link plate A are respectively connected with right-angle hanging plates A, and the right-angle hanging plates A are connected with trunnion hanging plates. The suspension link plate is further provided with a weight piece at the position close to the bottom. The application realizes lightweight design of the suspension string, so that the stability and reliability of the connecting piece are improved while the stability of the extra-high voltage transmission is ensured.

This invention discloses a method and system for judging thermal defects in composite insulators based on a combination of large and small models. The method includes: extracting the global temperature of an acquired infrared image containing composite insulators, detecting and segmenting the composite insulators, calculating the minimum bounding rectangle of the segmented composite insulator regions, extracting temperature sequences and sharpening temperature values ​​to obtain the sharpened minimum bounding rectangle; constructing a structured multimodal feature set; inputting the core rod temperature feature matrix and its trend graph into a fine-tuned large multimodal model to determine if thermal defects exist; inputting the core rod temperature feature matrix into a trained convolutional neural network small model to determine if thermal defects exist and their intensity; and combining the thermal defect judgment results from the large model and the small model to obtain the final thermal defect result. This invention achieves intelligent, rapid, and accurate identification of thermal defects in composite insulators.

The present application relates to the technical field of high-voltage electrical equipment manufacturing, in particular to an intelligent gradient injection method and mold, equipment and medium for a hard composite insulator, the method provided by the present application mainly comprises obtaining temperature data, pressure data and gel detection data collected by a sensor arranged in the insulator; sending an execution signal for glue injection based on the temperature data and the pressure data; when the filling is completed, sending a pressure maintaining signal based on the first dielectric sensing data and the second dielectric sensing data. Through the interaction feedback and dynamic interlocking of hardware and software, the forming process is accurately controlled, thereby systematically solving the appearance and internal quality problems of the epoxy resin hard composite insulator in the APG forming.

This utility model relates to a stainless steel and tantalum composite insulator, comprising a stainless steel shell as a conductive cathode, an mounting position for a tantalum tube anode inside the stainless steel shell, an axially mounted tantalum tube anode inside the mounting position, and a microcrystalline glass layer forming an insulating medium at the connection between the tantalum tube anode and the stainless steel shell; the tantalum content of the tantalum tube anode is 99% or more by mass, with the remainder being impurities; the conductive cathode is either 316L or 2205 duplex stainless steel. By using the tantalum tube anode and stainless steel as the conductive cathode, and the microcrystalline glass forming the insulating layer, a matching seal can be achieved with the stainless steel and tantalum tube, ensuring electrical isolation. The tantalum tube anode can withstand boiling concentrated sulfuric acid, hydrochloric acid, and other strong acids, with a lifespan far exceeding that of traditional electrodes; ensuring the corrosion resistance of the stainless steel and tantalum composite insulator. The stainless steel cathode undergoes surface modification to avoid brittle fracture caused by long-term hydrogen evolution, increasing its conductive stability.

The application discloses an insulator selective jet flow modification and gradient coating spraying integrated method and system, and relates to the field of high-voltage outer insulation material surface treatment technology. The method comprises the following steps: dividing a composite insulator into regions to obtain composite insulators in each sub-region; determining composite insulators in a modified region and composite insulators in an unmodified region from the composite insulators in each sub-region; shielding the composite insulators in the modified region, and pre-treating the surface of the composite insulators in the unmodified region by using atmospheric pressure plasma; spraying a fluorine-containing or silane-containing nano coating on the surface of the pre-treated composite insulator, and performing temperature curing to form a composite hydrophobic layer, so as to obtain modified composite insulators; and measuring performance parameters of the modified composite insulators, and determining the performance of the modified composite insulators according to the measured performance parameters. The application can improve the hydrophobic performance and pollution flashover resistance of the insulating material.

This application relates to the field of fault diagnosis technology and provides a composite insulator detection system and method based on terahertz technology. The composite insulator detection system includes a host computer, a drone equipped with a terahertz time-domain spectroscopy module, a robotic arm connected to the drone, and a terahertz transceiver array connected to the robotic arm. A wireless network data transmission channel is established between the host computer and the drone. The terahertz transceiver array includes a ring-shaped base and multiple terahertz transceiver units evenly distributed along the circumference of the ring-shaped base. The host computer processes the time-frequency domain information and imaging results of the composite insulator to generate an identification result. When the identification result indicates that the composite insulator is defect-free, the coordinates of the aging area are stored. When the identification result indicates that the composite insulator has defects, a defect status report is generated. This application can improve the detection efficiency of composite insulators in terms of aging and defects.

The application discloses a kind of composite insulator core rod and sheath interface fatigue test and life prediction method and system, belong to insulator life assessment technical field.The method of the present application comprises: obtaining the hourly wind speed data of the running area environment of composite insulator, based on the hourly wind speed data to determine the stress amplitude of glue joint layer;Based on the stress amplitude of the glue joint layer, electro-hydraulic servo fatigue test and accelerated test are carried out for the core rod and sheath interface of composite insulator, and test data are obtained;Introducing environmental correction factor to correct the test data, obtain correction data, based on the correction data, the life of composite insulator is predicted.The present application significantly improves the evaluation efficiency and objectivity through automatic data processing and multi-source information fusion, reduces the interference of human factors, and provides innovative technical means for power equipment anti-aging design, differentiated operation and replacement cycle optimization.

1. The name of the design product: composite insulator for drainage. 2. The use of the design product: used for high-voltage transmission line drainage insulation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 2.

This invention belongs to the technical field of composite insulators for high-voltage transmission lines in high-altitude areas. It provides a high-strength composite insulator suitable for high-altitude regions, comprising a core rod, top connecting hardware, bottom connecting hardware, shed assembly, and a sealing structure. The shed assembly consists of large and small sheds. The core rod and shed assembly are made of high-strength fiber-reinforced resin-based composite material and high-altitude aging-resistant polymer insulating material, respectively. The large and small sheds are arranged alternately along the core rod axis. A sealing structure is provided at the connection end between the hardware and the core rod, and the interface between the shed assembly and the core rod is reinforced. This insulator is suitable for extreme high-altitude environments, improves overall mechanical and insulation performance, and ensures the safe and stable operation of high-voltage transmission lines in high-altitude areas.

This utility model belongs to the technical field of power system insulation material testing and research, specifically a composite stress aging device for composite insulators. A first motor is fixedly connected to the side wall of the workbench near the workbench; a first lead screw is rotatably connected to the output end of the first motor; two symmetrically arranged supports are slidably connected to the middle of the first lead screw; a limit frame is fixedly connected to the top of the supports; two symmetrically arranged limit bolts are slidably connected to the middle of the limit frame; and a spring clamp is fixedly connected to the middle of the limit frame near the limit bolts. Through the above structure, the combined use of the limit bolts and the spring clamp can accurately position the composite insulator in the test position, ensuring that the insulator is in the correct stress state during testing, improving the accuracy of the test, and avoiding slippage or displacement of the insulator during tensile testing, which would lead to uneven stress on the insulator during tensile testing and thus affect the accuracy of the test results.

This application provides a multi-stage wireless power transfer coil structure and parameter design method to address the severe cross-coupling problem caused by the coaxial arrangement of multi-stage power transfer coils within existing composite insulators. The structure includes three parallel resonant coils, which are sequentially spaced along the same direction. These sequentially spaced resonant coils are defined as the first to the second resonant coils, with the central axis of the first resonant coil coinciding with the central axis of the third resonant coil. The offset between the central axis of the second resonant coil and the central axis of the third resonant coil is denoted by , where: is the number of resonant coils, , . This application significantly increases the effective distance between non-adjacent coils by radially staggering the resonant coils, and reduces the cross-coupling mutual inductance of non-adjacent coils by utilizing the inverse cube of the mutual inductance and distance.

The utility model provides a kind of composite insulator, including core rod and several umbrella skirts, and several first plug-in fittings are arranged on the outer peripheral wall of core rod with axial interval;Several umbrella skirts are set one by one with several first plug-in fittings, the top of umbrella skirt has the mounting sleeve of being set on the outer periphery of core rod, the inner peripheral wall of mounting sleeve is equipped with the first slot for being inserted with plug-in fitting, and the aperture for being passed through by core rod is equipped on umbrella skirt and mounting sleeve;Wherein, the top surface of umbrella skirt and the outer peripheral wall of mounting sleeve are coated with sealing protective layer.The composite insulator provided by the utility model can be quickly disassembled and replaced on the spot when corresponding damaged umbrella skirt, without disassembling whole insulator for factory repair, time and effort are saved, and cost is saved.

This invention discloses a gradient dielectric constant DC bushing core and its preparation method. The core includes a central conductive rod and a composite insulator covering it. The composite insulator is formed by winding and curing a continuous composite base tape with multiple dielectric constant partitions along its length. The preparation method involves a segmented sequential impregnation process. First, the entire roll of reinforcing material base tape is impregnated with a resin with the lowest dielectric constant. Then, resins with higher dielectric constants are used to partially impregnate the reinforcing material base tape from low to high. This selectively coats and pre-cures only the base tape segments, thereby forming gradient partitions with varying dielectric constants along the length of a single base tape. After the base tape is wound and cured in the partitioned sequence, an insulating core with radially decreasing dielectric constant is formed. This invention achieves precise gradient control of the dielectric properties of the insulating material, can actively optimize the electric field distribution of the DC bushing, and improve its insulation strength, reliability, and compactness.

The application relates to the technical field of infrared insulator detection, in particular to a composite insulator slender target lightweight detection method based on LF-YOLO and thermal imaging, which comprises the following steps: adding a C2PSA_LSKA attention fused with LSKA after a YOLO main stem SPPF, enhancing a global receptive field and highlighting weak edge features; using FreqFusion to reweight high-frequency and low-frequency information between each layer of the YOLO neck, and then performing bidirectional multi-scale fusion through BiFPN; in the YOLO neck, a lightweight GSConv is matched with VoVGSCSP to form a Slim_Neck, which significantly reduces the neck calculation and parameter scale while maintaining efficient multi-scale feature transmission. Under the premise of not significantly increasing the parameters and calculation, the application enlarges the effective receptive field, enhances the attention degree to key defect features, thereby reducing the missed detection and false detection, improving the precision rate, recall rate and overall reliability.

This invention provides a safety interlocking device, a safety interlocking method, and a UAV laser obstacle removal system. The device includes: an acquisition unit for acquiring images of a laser-guided area; an identification unit for determining whether composite insulators exist in the image; and a closed-loop self-testing unit for driving a diffractive reference plate to alternately switch between a fully transparent first state and a second state projecting a standard feature map of composite insulators at a predetermined frequency to generate a self-test image. The acquisition unit is also used to acquire the self-test image. The identification unit is configured to, in self-test mode, determine whether the safety interlocking device is functioning correctly based on the matching relationship between the switching state of the diffractive reference plate and the image recognition result of the self-test image, thereby controlling the on / off state of the execution unit. This invention has the advantages of dedicated composite insulator identification, real-time closed-loop self-testing, and millisecond-level active interlocking, avoiding accidental damage to composite insulators during operation.

The application discloses a composite insulator positioning and pressing tool and belongs to the technical field of insulator processing. The tool comprises a base and an insulator processing piece. The insulator processing piece is arranged at the top end of the base. A processing frame is fixedly installed at the top end of the base. A pressing mechanism with a screw rod is arranged in the middle of the processing frame. The pressing mechanism comprises a screw rod rotatably installed on the surface of the processing frame and used for pressing and moving a pressing assembly. The pressing assembly comprises a gas collecting plate arranged on the surface of the screw rod. A cover plate is sealingly installed at the top end of the gas collecting plate. The tool is inflated by a gas pump. The pressure of the gas is used to synchronously press and extrude the pressure rods in the sleeves. The insulator processing piece is uniformly pressed. The sliding plate in the sleeve cooperates with the limiting spring. The opening size of the top end of the sleeve can be automatically adjusted when the gas pressure is unbalanced. The gas pressure in each sleeve is balanced. The pressure applied by each pressure rod is uniform. The pressing quality and the service life of the insulator are remarkably improved.

The application relates to the technical field of milling processing and discloses a three-station milling cavity device special for composite insulator ball socket fittings, which comprises a machine body, a rotary table rotatably connected to the top of the machine body and a milling structure slidably connected to the top of the machine body; the outer surface of the milling structure is fixedly connected with a fixing frame, the outer surface of the fixing frame is fixedly connected with an electric sliding rail, the inner part of the electric sliding rail is slidably connected with an electric sliding block, the outer surface of the electric sliding block is rotatably connected with a turnover block, the outer surface of the turnover block is rotatably connected with a spiral milling cutter, the top of the fixing frame is fixedly connected with a fixing cylinder, and the circumferential outer surface of the fixing cylinder is provided with a fixing sliding rail. The three-station milling cavity device special for composite insulator ball socket fittings can effectively solve the problem that, in the prior art, the actual cutting position and cutting thickness of a tool and a workpiece are changed by a built-up edge, the cutting precision of the milling cutter on the workpiece is reduced, and the relative position precision of the ball socket fitting is reduced.

The utility model relates to a kind of anti-drop composite insulator device with spring leaf, by hardware, spring leaf I, spring leaf II, stop ring I, stop ring II and composite insulator core rod, hardware is hollow circular hollow pipe, length is 70~90 millimeters, one end is equipped with connecting pull handle, the other end opening, it is equipped with circular groove II on the inner circular surface of hardware opening end, width is 5~10 millimeters, depth is 1.0~5.0 millimeters, it is equipped with groove I on the outer circular surface of composite insulator core rod, width is 5~10 millimeters, depth is 1.0~5.0 millimeters, stop ring is by stop ring I and stop ring II, spring leaf is by spring leaf I and spring leaf II, stop ring I and spring leaf I are combined and fixed together to become semicircle ring I, stop ring II and spring leaf II are combined and fixed together to become semicircle ring II, semicircle ring I, semicircle ring II are embedded in groove I and groove II, hardware, semicircle ring I, semicircle ring II and composite insulator core rod are integrated, increase mechanical resistance.