801 results about "Porcelain insulator" patented technology

The invention provides a porcelain insulator pulse excitation detection method based on multi-mode coupling analysis, and belongs to the technical field of intelligent detection of power equipment, and the method comprises the following steps: applying a mechanical pulse excitation signal with an adjustable amplitude; collecting a vibration response signal and constructing a temperature-frequency compensation model; separating the vibration mode of each section: constructing an equivalent mass-rigidity-damping model of a plurality of sections of insulators; extracting instantaneous frequency from the separated multi-mode signal, capturing the non-stationary characteristic of the vibration signal, and capturing the local rigidity change; and calculating a crack quantitative index and outputting a diagnosis result, including establishing a crack depth-frequency offset mapping database, and acquiring an actual bending form of the vibration mode by identifying the position of the crack. The method has the advantages that the three-dimensional characteristic spectrum of the crack is constructed through joint analysis of multi-dimensional data such as the vibration mode, the instantaneous frequency and the curvature distribution, the limitation of traditional single parameter detection is broken through, and refined distinguishing of defect property cracks, aging and the like is achieved.

The invention discloses an antifouling self-cleaning line column type porcelain insulator and a detection method thereof, and relates to the field of insulators, a connecting bin is provided with a positioning rotating member, two ends of a movable sleeve block are provided with one-way drawing units connected with a piston rod, and a gas storage bin is provided with a rotating exhaust member. By arranging a position adjusting rotating part, a rotating exhaust part and a one-way pulling unit, when wind blows a fan blade plate, a reversing bevel gear can drive a transmission shaft to rotate clockwise so as to enable a reciprocating lead screw to rotate clockwise, and when a transmission gear ring rotates anticlockwise, the reversing bevel gear drives the transmission shaft to rotate clockwise so as to enable the reciprocating lead screw to rotate anticlockwise so as to enable the reciprocating lead screw to rotate anticlockwise. Therefore, when the second pawl rotates, the reciprocating screw rod rotates clockwise all the time, one-way rotation of the reciprocating screw rod can be achieved, then the rotating exhaust part and the one-way pulling unit are matched, the surface of the insulator body can be cleaned through airflow, and the self-cleaning effect is achieved.

The invention relates to a distribution line mixed pillar porcelain insulator injection molding whole process optimization method and an on-line monitoring method, and belongs to the field of mixed pillar porcelain insulator injection molding process optimization. As the mixed insulator is a new product, research on the compounding process of the high-temperature vulcanized silicone rubber and the porcelain piece is less at present. How to effectively compound high-temperature vulcanized silicone rubber and a mixed porcelain post insulator to obtain an optimal forming process of a novel mixed porcelain post insulator is a key point of consideration. Glue injection simulation analysis and online monitoring of the actual glue injection process are combined, comprehensive analysis is carried out on the composite process of the mixed insulator, and therefore the most suitable injection scheme is obtained. According to the method, the problem of determining important parameters in the whole process of injecting the high-temperature vulcanized silicone rubber on the surface of the porcelain part is solved, and the problems of actual feedback and dynamic adjustment in the rubber injection process are also solved.

The invention discloses a porcelain insulator defect detection system and a detection method thereof, and relates to the technical field of porcelain insulator defect detection. According to the porcelain insulator defect detection method, the mechanical strength, the electrical performance, the vibration response and the temperature response data of the porcelain insulator are obtained, all the data are comprehensively analyzed, all the defect evaluation indexes are obtained and compared with the preset defect evaluation interval, and defect marking processing is carried out. According to the invention, through comprehensive analysis of measurement data of mechanical strength, electrical performance, vibration response and temperature response, the health condition of the porcelain insulator can be evaluated more accurately, and compared with a traditional single detection method, the multi-dimensional evaluation can identify more types of defects, so that the detection accuracy is improved. According to the method, potential faults caused by tiny physical damage, electrical performance abnormity and temperature change are eliminated, and through comparative analysis of multiple indexes, the possibility of misjudgment and missed judgment is reduced, so that the detection process is more refined, and long-term stable operation of the porcelain insulator in a complex environment is guaranteed.

The invention belongs to the technical field of insulator detection equipment, particularly relates to a tension testing device for an electric porcelain insulator, and aims to solve the problem that only a radial tension test is carried out in the existing insulator tension test, and provides the following scheme: the tension testing device comprises a mainframe box, and limiting sliding rods are fixed on two sides of the mainframe box; a bottom tooth plate block is fixed to the bottom of the main machine box, a bottom tooth plate is fixed to the top of the bottom tooth plate block, an annular frame is arranged in the middle of the main machine box, and the annular frame, the limiting sliding rods on the two sides and the bottom tooth plate block at the bottom are installed in a sliding and sleeving mode. According to the invention, the locking claws lock the insulator body, in the testing process, the threaded sleeve driving motors at the two ends drive the threaded sleeve driving gears to rotate, then the tension lead screws at the two sides are driven to stretch and extrude the insulator body in the middle, and different tension tests are applied to the insulator body. The positions of the test end boxes on the two sides are adjusted to enable the insulator body to generate different bending states.

The invention discloses a porcelain insulator zero value detection method based on voltage distribution and a related device. The method comprises the following steps: acquiring voltage effective value data of each insulator to be detected; drawing a curve according to the acquired voltage data of each insulator to be detected by taking the serial number of the insulator as a horizontal coordinate and taking the effective value of the voltage as a vertical coordinate; and analyzing whether a zero-value insulator exists in the to-be-detected insulator string according to the waveform trend of the curve. The step-down circuit with the core device being the capacitor is arranged in front of the input end of the voltage detection device, and the capacitor is connected to the porcelain insulator to be detected in parallel, so that the input voltage is effectively reduced, and the voltage detection device is protected from being damaged by overhigh voltage; the effective value of the measured voltage is obtained, the actual effect of the measured voltage can be reflected more accurately, the calculation process is simplified, and the efficiency is improved.

The invention belongs to the technical field of insulators, and discloses an antifouling self-cleaning pillar electric porcelain insulator, which comprises an insulator assembly, a pneumatic cleaning arm assembly is arranged on the insulator assembly, and the pneumatic cleaning arm assembly forms a pneumatic driving type cleaning arm structure for the insulator on the insulator assembly. The pneumatic cleaning arm assembly forms a cleaning arm structure capable of rotating annularly and rotating on the insulator assembly, in the annular cleaning process, a fixed-point self-folding cleaning arm structure and a through-point self-unfolding cleaning arm structure are formed on the pneumatic cleaning arm assembly, and the annular rotating and rotating structure is formed in the annular bin through the gear moving gear. At the moment, the pneumatic cleaning arm assembly forms a cleaning driving structure which rotates annularly and automatically on the insulator assembly, that is, on the basis that the pneumatic cleaning arm assembly rotates annularly and automatically, one-time cleaning of the supporting column electric porcelain insulator through the cleaning brush is achieved, and on the basis that the pneumatic cleaning arm assembly rotates annularly and automatically, one-time cleaning of the supporting column electric porcelain insulator through the cleaning brush is achieved. And secondary cleaning of annular motion and autorotation of the pillar electric porcelain insulator by the air outlet groove hole is realized.

The invention relates to the technical field of flaw detection equipment accessory devices, in particular to a flaw detection robot and a flaw detection method for a post porcelain insulator of a transformer substation, and provides the flaw detection robot and the flaw detection method for the post porcelain insulator of the transformer substation, the detection probe performs reciprocating detection on the insulator so as to provide equipment detection flexibility, the equipment is hoisted to a voltage tower, a clamping mechanism of the equipment is clamped with a gap between two groups of disc bodies of the insulator so as to fix the equipment on the insulator, and the bottom displacement device rotates and is folded, so that the detection flexibility of the equipment is improved. And the clamp can be clamped through a gap between the clamp and an insulator disc body.

The invention discloses a disc-shaped suspension type porcelain insulator processing device, and relates to the field of disc-shaped suspension type porcelain insulator processing, and the disc-shaped suspension type porcelain insulator processing device comprises a workbench, the top end of the workbench is rotatably connected with a supporting shaft, the outer side of the supporting shaft is fixedly provided with a first rotating disc and a second rotating disc, and the second rotating disc is arranged above the first rotating disc. A first electric push rod is fixed to the edge of the top end of the first rotating disc, a supporting disc is fixed to the top end of the first electric push rod, a fixing groove is formed in the edge of the second rotating disc, pug enters the position between the supporting disc and the upper mold, the pug can be stored in the forming groove, and a rough insulator-shaped pug blank is formed; due to the fact that the electric heating wires are arranged in the upper mold and the supporting disc, an insulator-shaped mud blank can be heated through a sealed environment, on one hand, the mud blank can be preliminarily dried through drying, an insulator can be shaped, and on the other hand, adhesion between the outer side of the mud blank and the upper mold and between the outer side of the mud blank and the supporting disc can be avoided through heating, so that mud blank demolding is easier.

The invention discloses a method for calculating an internal water pressure rejection threshold value of a disc type suspension porcelain insulator, which comprises the following steps of: (1) extracting n samples of the porcelain insulator, performing a destructive internal water pressure test, and sorting the water pressure values of the damaged samples from small to large; (2) estimating a probability value of the destroyed water pressure to obtain a data set of a destroyed sample; (3) products with the proportion of the first k% destroying water pressure are set as defective products, the first k% of data are removed from the data set D0, and a data set Dk of qualified products is obtained; (4) calculating the saliency Pr (k) of the data set Dk of the qualified products; (5) selecting different k%, repeating the step (3) and the step (4), calculating corresponding Pr (k), and finding out kbest; and (6) calculating a water pressure rejection threshold value Sth selected on the production line. According to the method, inferior-quality products and qualified products are divided according to the saliency of Weibull distribution fitting correlation coefficients, and the rejection threshold value of the water pressure test in the disc type suspension porcelain insulator is determined. According to the method, defective products are scientifically removed, and the quality of outgoing products is improved.

The invention discloses a porcelain insulator nondestructive testing device and method based on chirp modulation photoacoustic spectroscopy. The device comprises a signal generator, a signal processing module and a signal processing module, the laser is connected with the signal generator; the power amplifier is connected with the laser; the laser collimator is connected with the power amplifier; and the signal collector collects the sound wave signals, converts the sound wave signals into electric signals, transmits the electric signals to the computer through a cable for data processing, obtains a spectrogram of the sound wave signals, and judges whether defects exist in the porcelain insulator or not according to the spectrogram. According to the porcelain insulator nondestructive testing device adopting chirp modulation and photoacoustic spectroscopy, characteristic frequency scanning is achieved through chirp modulation, a porcelain insulator acoustic signal spectrogram is obtained through the solid photoacoustic effect, non-power-cut nondestructive testing of porcelain insulators can be achieved, and the detection efficiency of porcelain insulator defects is greatly improved.

The invention relates to the technical field of defect detection, and discloses a device for detecting crack defects of a porcelain insulator, which solves the problems that a fixing clamp shields the porcelain insulator and the shielded part of the porcelain insulator needs to be secondarily detected in the later stage, and comprises an operation table, the bottom of the operation table is fixedly connected with a plurality of supporting legs, and the supporting legs are fixedly connected with the fixing clamp. A detection camera is arranged above the operation table, an adjusting unit used for adjusting the position of the detection camera is installed on the operation table, a plurality of rectangular frames are arranged above the operation table, and a rotary switching mechanism matched with the rectangular frames is installed on the operation table; two carrying seats are arranged in the rectangular frame, and accommodating grooves for accommodating the end parts of the porcelain insulators are respectively formed in one sides, close to each other, of the two adjacent carrying seats; and the shielded part of the porcelain insulator can be shot without secondary detection, so that the detection efficiency and convenience are improved.

The utility model relates to the technical field of porcelain insulators, and discloses a disc-shaped suspension type porcelain insulator, which comprises an insulating umbrella skirt and a connecting hardware fitting, the top of the insulating umbrella skirt is fixedly provided with the connecting hardware fitting, and the disc-shaped suspension type porcelain insulator blows a wind cup through high-altitude wind power to drive a cross rod and a lantern ring to rotate synchronously, so that the cross rod and the lantern ring can rotate synchronously. Meanwhile, a triangular block can be driven to rotate in cooperation with a sliding block, a sliding rod, a wave groove, a rack, a gear and a rotating shaft, sunlight can be refracted through rotation of the triangular block in cooperation with a reflective mirror, the sunlight refracted by the reflective mirror is utilized to stimulate surrounding flying poultry animals, and the flying poultry animals fly away from the insulating umbrella skirt after being disturbed by the sunlight; according to the porcelain insulator, long-time staying of birds on the insulating umbrella skirts is avoided, so that corrosion of an enamel layer on the surface of the porcelain insulator caused by falling of excrement of the birds on the insulating umbrella skirts can be avoided, and the service life of the porcelain insulator is prolonged.

The invention belongs to the technical field of porcelain insulator detection in a power system, and provides a porcelain insulator live detection method and system based on mechanical pulse excitation, and the method comprises the steps: S1, building an insulator detection result database through vibration response simulation; s2, detecting the insulator to be detected: performing the same excitation operation on the insulator to be detected, and detecting and extracting voiceprint feature data of the insulator to be detected; s3, contrastive analysis: inputting the extracted feature values into a pre-trained deep BP neural network model, adding at least one hidden layer to the model on the basis of a standard BP neural network, and improving the model by using a ReLU activation function and a dropout strategy; and outputting a detection result through the deep BP neural network model, and judging the state of the insulator. According to the scheme, on-line, rapid and accurate detection of the porcelain insulator is realized, meanwhile, the detection cost and time are reduced, the operation condition can be grasped in time, and power failure accidents are avoided.

The invention provides a porcelain insulator quality evaluation system based on multi-physics field coupling analysis, and relates to the technical field of rod-column porcelain insulator data processing.The porcelain insulator quality evaluation system adopts an electricity-heat-force multi-physics field joint simulation model to comprehensively reflect the heat accumulation and stress deformation effect caused by electric field concentration; an electric field concentration coefficient, a temperature rise trend coefficient and a stress gradient coefficient at a sharp point can be accurately captured, and degradation path prediction in a real operation environment is formed; according to the technology, the thread coupling abnormal index F alpha i of the ith rod-type column porcelain insulator is constructed, whether the thread structure has the risk of partial discharge, flashover or breakdown or not can be dynamically evaluated, and by introducing equivalent dielectric layer simulation of various environmental media, the simulation of the influence of various pollutants, attachments and climates on electric field concentration in reality is promoted; quantitative evaluation of the corona discharge risk of the sharp point is realized, and the reliability of the structural design of the insulator is promoted and improved.

The invention relates to the field of insulating materials, in particular to a preparation method of a ceramic insulator, which comprises the following steps: ball-milling cryolite, kaolin, quartzite, thiourea intercalation layered bimetallic oxide, glass powder, sodium tungstate, ferrous sulfate and deionized water, uniformly mixing, adding a binder, uniformly stirring to obtain glaze, applying the glaze to a ceramic matrix to obtain a rough blank, and sintering to obtain the ceramic insulator. And drying the rough blank, putting the rough blank into a muffle furnace, heating to 1100-1200 DEG C, and sintering for 1-5h. The ceramic insulator prepared by the invention has excellent photocatalytic self-cleaning performance and anti-pollution flashover performance, can ensure safe and stable operation of a power transmission line, and reduces the maintenance cost of line operation.

The invention discloses a temperature curve splicing method and system for an ultra-long string disc-shaped suspension porcelain insulator, and belongs to the technical field of power transmission lines. The method comprises the following steps: acquiring a first infrared image and a second infrared image corresponding to a first target position and a second target position in the ultra-long string disc-shaped suspension porcelain insulator; pre-processing the first infrared image and the second infrared image to obtain a first binary image and a second binary image corresponding to the first infrared image and the second infrared image; acquiring a corresponding first temperature curve and a second temperature curve; optimizing the first temperature curve and the second temperature curve to obtain a corresponding first optimized temperature curve and a corresponding second optimized temperature curve; a splicing point between the first optimized temperature curve and the second optimized temperature curve is calculated according to a window variance algorithm, and the first optimized temperature curve and the second optimized temperature curve are spliced according to the splicing point; and the splicing points are searched through a window variance algorithm, so that the spliced temperature curve is more accurate.

The invention relates to a detection robot, and discloses an insulator detection robot and an operation method thereof. The insulator detection robot comprises a robot main body, wherein the robot main body comprises a bottom mounting seat and a metal clamping jaw which can be clamped at a metal connecting section of an insulator; a zero value detector and a quick short circuit device are further arranged on the bottom mounting base, the quick short circuit device comprises a double-swing-arm assembly and a single-swing-arm assembly which are arranged on the two sides of the bottom mounting base respectively, and each of the double-swing-arm assembly and the single-swing-arm assembly comprises a metal short circuit rod which can swing to make contact with the metal connecting section of the insulator. According to the invention, air breakdown discharge possibly generated between the robot and the steel foot and the steel cap of the to-be-tested porcelain insulator can be avoided, the robot is in an equipotential operation state in the operation process, no current introduced due to a voltage difference between the robot and the to-be-tested insulator passes through the robot, and the safety of the robot body is protected.

The invention provides a porcelain insulator crack defect identification method and system based on non-contact laser ultrasound, and the method comprises the steps: extracting a forking angle and a forking length of a porcelain insulator tree-shaped crack from a porcelain insulator crack network expansion speed multiple, and carrying out the time domain analysis of multiple peak values of an echo signal, obtaining a numerical sequence of peak amplitude changing along with time; according to the numerical value sequence of the peak amplitude changing along with time, the echo energy loss degree at the bifurcation point is identified, a tail end weak reflection signal of the tree-shaped structure is analyzed, and the tail end depth value of the porcelain insulator tree-shaped crack is determined; the obtained porcelain insulator tree-shaped crack tail end depth value is combined with the rate relation that the number of branches is increased along with time, and the critical moment when the porcelain insulator crack is converted from a linear state to a tree shape is judged; and generating an early warning signal for identifying the crack defect of the porcelain insulator based on non-contact laser ultrasound according to the critical moment when the crack of the porcelain insulator is transformed from the linear state to the tree state.

The invention discloses fine grinding equipment and a grinding method for porcelain insulators, and relates to the field of insulator production, the fine grinding equipment comprises a pug refining barrel and a grinding box, the bottom end of the grinding box communicates with the top end of the pug refining barrel, two grinding rollers are rotationally connected into the grinding box, the two grinding rollers are arranged in a mutually attached mode, and the two grinding rollers are arranged in a matched mode. A heating roller is rotatably connected to the interior of the pug refining barrel, a protruding end is fixed to the outer side of the heating roller, and the two grinding rollers rotate oppositely, so that falling pug is subjected to primary grinding, large particles in the pug are ground, bubbles in the pug are discharged through extrusion, extrusion and re-grinding are conducted in the pug refining barrel, and the pug refining efficiency is improved. During secondary grinding, the vacuum pump continuously extracts air, keeps a vacuum environment, absorbs bubbles and moisture in the pug and discharges the bubbles and moisture out of the pug cylinder, so that the fineness and the purity of the pug are improved, and meanwhile, through primary grinding, the working pressure of the pug cylinder can be reduced, and the service life of the pug cylinder can be prolonged.

The utility model relates to the technical field of insulators, and discloses a pin type porcelain insulator, which comprises a main body, a mounting seat and a mounting structure, the top of the main body is fixedly connected with a supporting rod, the top of the main body is provided with the mounting structure, the bottom of the main body is provided with a fixing structure, and the mounting structure comprises an auxiliary block, a fixing block and a fixing block. An auxiliary block is fixedly connected to the end, away from the main body, of the supporting rod, a clamping groove is formed in the side wall of the auxiliary block, and an auxiliary groove is formed in the bottom of the auxiliary block. According to the pin-type porcelain insulator, through the arrangement of the mounting structure, the pin-type insulator can be quickly fixed on the mounting seat only by moving the pin-type insulator upwards towards the notch in the surface of the mounting seat through the mounting structure, so that the time for mounting the pin-type insulator is saved; and therefore, the safety risk of a worker during the installation of the pin insulator can be reduced, and the use effect of the pin insulator can be better.

The invention discloses a suspension type porcelain insulator detection method and equipment for detection of the method, and relates to the technical field of insulator detection, the suspension type porcelain insulator detection equipment comprises a mounting table, one end of a positioning block is provided with a distance adjusting traction piece connected with a movable guide block, and the other end of a tension sensor is provided with a bending detection piece connected with the distance adjusting traction piece. According to the suspension type porcelain insulator bending detection device, the bending detection part is arranged, the telescopic air cylinder is started, the positioning rod swings relative to the positioning block through extension of the inclined connecting rod, so that the suspension type porcelain insulator is bent, and when the telescopic air cylinder contracts, an aqueous solution in a second piston barrel can be extracted through cooperation of a first piston barrel and a first piston rod; the worm drives the worm gear to rotate, so that the mounting base can drive the suspension type porcelain insulator to rotate, the suspension type porcelain insulator is bent in different directions through repeated stretching and retracting of the telescopic air cylinder, and the accuracy of detection data is improved.

The invention provides an anti-fouling porcelain insulator and a preparation method thereof, the anti-fouling porcelain insulator comprises a porcelain insulator matrix and an anti-fouling glaze layer, and the anti-fouling glaze layer is composed of nano silicon dioxide, a modified nano titanium dioxide photocatalyst, a silane coupling agent, an antibacterial agent, a thickening agent, organic silicon resin and an organic solvent in specific parts by weight. Wherein the antibacterial agent is prepared by mixing nano-silver, alliin and cashew nut shell oil according to a specific proportion. The preparation method comprises the following steps: preparing the photocatalyst, preparing the nano antifouling paint, modifying the porcelain insulator matrix, coating and the like. The performance of the product is improved by applying pulsed magnetic field oscillation when the nano titanium dioxide is stirred, and performing surface cleaning, photoresist treatment, etching and other operations on the porcelain insulator substrate. The antifouling porcelain insulator has good antifouling performance, insulating performance and weather resistance, can be coated in a spraying, brush coating or dip coating mode and the like, and provides reliable guarantee for stable operation of an electric power system.

The invention discloses ceramic insulator visual defect detection equipment, and relates to the field of defect detection, the ceramic insulator visual defect detection equipment comprises a base and a threaded rod arranged in the left side of the base, the upper end of the threaded rod is provided with a handle, the surface of the threaded rod is provided with a lifting plate, and the right end of the lifting plate is provided with a detection camera. According to the ceramic insulator visual defect detection equipment, when the pressing plate reciprocates, the pressing plate reciprocates to drive the toothed plate to move left and right, when the toothed plate moves left and right, the toothed plate can drive the gear rod meshed with the toothed plate, and the gear rod rotates along with the reciprocating motion of the toothed plate; the input end of a power supply generator can be driven to rotate through a belt wheel and a second belt, at the moment, the power supply generator converts rotating force into electric power through itself, the electric power is transmitted to a light supplementing lamp through a connecting wire, the light supplementing lamp can be powered, workers do not need to manually replace a battery, and resource consumption can also be saved; the practicability of the device is improved.

The invention discloses a high-strength ceramic insulator processing method, which is characterized in that diatomite and silicon powder are added into a blank of an insulator, the diatomite has good adiabaticity, the service life of the ceramic insulator can be prolonged, the performance of the ceramic insulator can be improved, and meanwhile, pores of the diatomite can be filled with silicon powder particles so as to reduce the porosity of the diatomite; on the other hand, the surface of the green body is subjected to ozone treatment during glazing, so that a glassy-state-like # imgabs0 # film and more hydrophilic groups # imgabs1 # can be generated on the surface of the green body to facilitate glazing, the bonding strength of the glaze and the green body is improved, and the strength of the insulator is improved; meanwhile, soluble impurities in kieselguhr in the glaze are removed through weak acidity of boric acid, boric oxide is generated through thermal decomposition reaction of boric acid, and boric oxide can react with aluminum oxide in the glaze to generate aluminum borate whiskers in the firing process after a green body is glazed; the aluminum borate whisker can be used as a reinforcing agent in the firing process of the insulator, so that the strength of the insulator is further improved.

The invention belongs to the field of insulator detection, and particularly relates to a porcelain insulator degradation detection method based on a photoelectric field sensing technology, which comprises the following steps: carrying out analogue simulation on a 35kV-500kV line porcelain insulator string through COMSOL, and establishing models by analogue simulation including a non-degradation model and a degradation model; the live detection of the porcelain insulator string is realized, firstly, the porcelain insulator string is simulated under two conditions of non-degradation and degradation, field intensity change reference thresholds of a high section, a middle section and a low section of the porcelain insulator string are confirmed, and during detection, a broadband electric field sensor based on a Pockels electro-optical effect is used for detecting the field intensity change reference thresholds of the high section, the middle section and the low section of the porcelain insulator string. Each insulator, between the high-voltage end and the low-voltage end, of the to-be-detected porcelain insulator string in the axial direction is detected, the detected field intensity data generates an axial field intensity distribution curve through the pre-simulated reference curvature, the fault position is visually displayed and the fault piece is confirmed in a curve comparison mode, and the detection accuracy is improved in a segmented comparison mode.

The invention provides a suspension type porcelain insulator, which is characterized by comprising an insulating body, a steel cap and a steel pin, the steel cap is fixedly connected to the upper portion of the insulation body, the steel foot is installed in the steel cap, and the bottom of the steel foot penetrates through the insulation body. The installation assembly is arranged in the steel cap, the adjusting groove is formed between the two sets of clamping tables, and the adjusting ball head can be placed in the adjusting groove; meanwhile, a fixing piece and an elastic piece are arranged outside the connecting rod, the clamping table is bonded to the bottom of the insulating body through an adhesive, and the steel foot can be steered through a horn groove and an adjusting groove, so that damage caused by overall vibration of the porcelain insulator in the gale weather can be effectively reduced, and after an insulator string is formed, damage to the insulator string is reduced in the gale weather. When a group of porcelain insulators deflect, the porcelain insulators below the group of porcelain insulators are forced to reset vertically under the action of gravity, namely, the porcelain insulators in the insulator string are integrated and are mutually independent, so that the wind resistance of the insulator string is effectively enhanced.

The invention discloses a porcelain insulator zero value rapid detection method and device based on impulse current characteristics. The method comprises the steps that high-voltage pulses are applied to the two ends of a to-be-detected porcelain insulator; an impact current signal in an insulator loop is sensed by using a magnetic ring, and the impact current signal is converted into an integral voltage signal through an integral circuit; the integral voltage signal is compared with a preset threshold value, if the integral voltage signal is higher than the preset threshold value, it is judged that the insulator is a zero-value insulator with the internal breakdown defect, and the preset threshold value is predetermined according to the given multiple of the integral voltage measured by a normal insulator under the same condition. By detecting the integral voltage signal of the breakdown current, misjudgment and missed judgment caused by different surface states or internal defect types of the insulator are effectively avoided, the detection accuracy and reliability are improved, and a new effective means is provided for rapid detection of the porcelain insulator.

The invention discloses a porcelain insulator and assembly in full-sealed connection, and relates to the technical field of porcelain insulators, the porcelain insulator comprises an insulator main body, the top end of the insulator main body is clamped with a U-shaped clamp, the U-shaped clamp is matched with a clamping plate, and the U-shaped clamp is in threaded connection with a fastening nut for positioning the clamping plate; vertical plates are fixedly connected to the two sides of the top of the U-shaped clamp, a supporting plate with the adjustable angle is arranged between the two vertical plates, and a sealing plate is arranged on the top of the supporting plate in a matched mode. A first threaded rod is rotationally arranged at the bottom end of the supporting plate, a pressing block is rotationally connected to the clamping plate, and a second threaded rod is fixedly connected to the pressing block. According to the porcelain insulator and the assembly in full-sealed connection, the supporting plate, the threaded sleeve, the cross rod and the limiting strip are arranged, the supporting plate is installed in an assembling mode, the inclination angle of the supporting plate is flexibly adjusted, meanwhile, the anti-rotation resistance of the fastening nut and the threaded sleeve is improved, the risk of slight looseness caused by wind vibration is reduced, and the use stability of the porcelain insulator is guaranteed.

The invention relates to the technical field of insulator installation, in particular to an extra-high voltage porcelain insulator supporting auxiliary assembly and an installation method.The other end of a second pull rope pulls a third pull rope, and a rotating rod assembly comprises an intermediate shaft wound around the second pull rope and rubber rods symmetrically distributed at the two ends of the intermediate shaft; the rubber rod is provided with a first pull rope connected with the clamping hoop, and the rotating rod assembly is provided with a limiting assembly for limiting the rotating angle. Through the arrangement of the pull rod structure, supporting connection of the insulator is achieved, through connection of the rotating rod assembly to the insulator is matched, and therefore it is guaranteed that the insulator falls off from a telegraph pole; and meanwhile, three groups of pull rope structures and rotating rod assemblies are arranged to be matched to form a stable supporting structure, when single-side traction stretching occurs, the insulator can deviate from one side, and in the deviation process, the clamping fixation of the hoop to the cable is further increased, so that the power transmission cable is always bound on the insulator, and the power transmission cable is prevented from falling down.