186 results about "Ceramic insulators" patented technology

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 high-power corona preionization excimer laser, which is characterized in that a laser discharge cavity is arranged in a shell, a main discharge electrode is arranged in the laser discharge cavity, and the main discharge electrode comprises a main discharge cathode and a main discharge anode; corona rods capable of conducting discharge preionization on working gas are arranged in the laser discharge cavity and located on one side of the main discharge cathode at intervals, each corona rod comprises a preionization electrode and a ceramic insulator, gaps are formed between the peripheral face of each ceramic insulator and the outer side wall of the main discharge cathode and the inner side wall of the insulation cavity, and the preionization electrodes and the main discharge anode are grounded. The main discharge cathode is connected with a negative high-voltage pulse, and when the excimer laser works, the driving voltage pulse of the corona rod is the same as the driving voltage pulse of the main discharge electrode. Corona discharge preionization is carried out through the corona rod, the main discharge electrode cannot be corroded, discharge dust cannot be generated, and it is ensured that the main discharge electrode carries out uniform glow discharge to generate high-quality laser.

The invention discloses an induction type suspension ceramic insulator zero value detection method and system, and relates to the technical field of power system detection.The method comprises the steps that an electric signal and an optical signal at the two ends of an insulator are collected through an induction assembly, and the collection sensitivity is adjusted in real time to adapt to environment changes; the signal processing unit is used for carrying out noise reduction and feature extraction on the collected signals, and the insulation performance state is judged by analyzing feature values; and generating a detection report according to an analysis result, and evaluating the potential risk of the insulation performance to generate a maintenance suggestion. According to the method, the insulation performance state of the insulator is accurately judged, the judgment accuracy of the insulation performance state is improved, reliable data support is provided for maintenance decision, the maintenance efficiency and the response speed are improved, potential risks of the insulation performance are evaluated in combination with environmental parameters, and a scientific basis is provided for preventive maintenance.

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 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 is suitable for the technical field of electrical equipment detection, and provides a ceramic insulator intelligent evaluation method based on spectral feature analysis, and the method comprises the steps: obtaining spectral data through 120 GHz high-frequency laser, synchronously collecting environment and electrical parameters, extracting 10-dimensional spectral features, and fusing the 10-dimensional spectral features into a multi-modal feature vector; training is carried out by using an integrated learning model fused by a random forest and XGBoost and an LSTM time sequence model, and a dynamic weight updating mechanism is combined to adapt to environmental changes; outputting aging grade probability distribution, aging trend prediction in the future 6 months and a risk value gt; and 3.0, early warning is triggered. According to the scheme, evaluation precision, dynamic adaptability and prediction capability are improved, and reliable support is provided for operation and maintenance of a power system.

The invention relates to the field of insulators, in particular to an anti-pollution flashover ceramic insulator and a preparation method thereof. The glaze layer is prepared from the following raw materials in parts by weight: 40-50 parts of potassium feldspar, 10-15 parts of Suzhou clay, 10-15 parts of calcite, 15-20 parts of quartz, 1-5 parts of aluminum oxide, 1-5 parts of magnesium oxide and 5-10 parts of modified halloysite nanotubes; the ceramic insulator is characterized in that a modified halloysite nanotube is loaded with a dialkyl dithiocarbamic acid metal salt-amino triazine copolymer, the glaze layer is the key for long-term use of the ceramic insulator in a severe environment, and the ceramic insulator is endowed with certain antifouling performance and photocatalytic performance, so that the service life of the insulator is prolonged, the service life of the ceramic insulator is prolonged, and the service life of the ceramic insulator is prolonged. The safe and stable operation of the power transmission line is ensured, and the maintenance cost of line operation is reduced.

The invention belongs to the technical field of ceramic insulator processing, and discloses a lightning protection ceramic insulator product processing glaze spraying device and method.The lightning protection ceramic insulator product processing glaze spraying device comprises a workbench, the top of the workbench is fixedly connected with a mechanical arm glaze sprayer, one end of the workbench is fixedly connected with a square box, the top of the square box is fixedly connected with a fixed box, and the lightning protection ceramic insulator product processing glaze spraying device further comprises a glaze spraying device, a glaze spraying processing mechanism and a cross sleeve rod drive a lifting disc and the ceramic insulator to rotate, a mechanical arm glaze spraying device can conveniently conduct all-dimensional glaze spraying work on the outer wall of the ceramic insulator, in the process that two flexible sleeve plates extrude an inner cavity of the ceramic insulator, it can be ensured that the ceramic insulator stably rotates, and the glaze spraying efficiency is improved. And the glaze spraying accuracy of the mechanical arm glaze sprayer on the ceramic insulator is improved. In general, when glaze spraying work is carried out on more ceramic insulators at the same time, the rotation of the multiple ceramic insulators can be more stable due to the dead weight of the multiple ceramic insulators, and glaze spraying of the mechanical arm glaze spraying device on the outer walls of the ceramic insulators is more accurate.

The invention relates to the technical field of power equipment state detection, in particular to an insulator pollution degree classification method based on a double-attention multi-scale enhancement network, which comprises the steps of preparing ceramic insulator samples of different pollution grades, collecting hyperspectral image data of the samples, constructing a double-attention multi-scale enhancement network framework model, and classifying the pollution degree of the ceramic insulator samples. The model comprises a double-branch spectrum enhancement module and a multi-scale spatial spectrum feature extraction module. A local area with a target pixel as the center is extracted from hyperspectral image data to serve as network input, spectrum related features are captured through a double-branch spectrum enhancement module, and multi-scale dirty area features and channel attention features are extracted and fused through a multi-scale spatial spectrum feature extraction module; and outputting a ceramic insulator pollution grade classification result by using global average pooling and a full connection layer. According to the method, high-precision pixel-level classification of the pollution degree of the ceramic insulator is realized, and the method is suitable for monitoring and evaluating the pollution state of the ceramic insulator of an actual power system.

The invention discloses a ceramic insulator production conveying line which comprises a conveying frame, an injection molding mechanism, a mounting mechanism and a spraying mechanism. Conveying rollers are rotationally connected to the left side and the right side in the conveying frame through bearings, the two conveying rollers are in transmission connection through a conveying belt, a base is placed on the left side of the upper end of the conveying belt, and a mounting box is arranged on the left side of the lower end of the conveying frame; the injection molding mechanism comprises mounting rods, transmission plates and limiting rods, the mounting rods are arranged on the right side of the bottom wall of the mounting box, the upper sides of the outer arc surfaces of the mounting rods are rotationally connected with the transmission plates through bearings, and the limiting rods are arranged on the left sides of the upper ends of the transmission plates. The positions of the two mold bases can be adjusted at the same time, the whole process can be completed only through one motor, the mounting column can be limited and fixed through the adjusting base, assembly and disassembly are convenient, the spraying area of a spraying gun can be increased, and spraying dead corners are further reduced.

The invention relates to the technical field of high-voltage equipment detection, and particularly discloses a detection device for a ceramic insulator in a high-voltage environment and a control method of the detection device.The detection device comprises a plurality of single detection modules, and each single detection module comprises an arc-shaped connecting part, an overturning part, a three-dimensional ultrasonic information collecting device and a wireless transmission device; the wireless transmission device is used for wirelessly transmitting three-dimensional ultrasonic information to terminal equipment arranged outside the safety distance of the ceramic insulator, the detection device is modularly designed to adapt to ceramic insulators of different sizes, stable clamping and axial rotation are achieved through the limiting driving structure, wireless data transmission is supported, and the detection device is convenient to use. According to the ceramic insulator detection device, an operator is ensured to be out of a safe distance, the risk of electric shock of the detector due to a high-voltage environment is avoided, a limiting driving structure is arranged to drive the single detection modules to integrally move up and down through rotation, detection of a plurality of grooves of a ceramic insulator is further realized, and manual movement of the detection device is avoided.

The utility model provides an anti-icing ceramic insulator. The anti-icing ceramic insulator comprises umbrella skirts and a ceramic core rod, and a fluorosilicone resin anti-icing coating is compounded on the surface of the umbrella skirt. According to the anti-icing ceramic insulator provided by the utility model, the fluorosilicone resin super-hydrophobic anti-icing coating is compounded on the surface of the umbrella skirt, so that the adhesive force between ice and the umbrella skirt of the insulator is greatly reduced, and the hydrophobicity of the surface is improved. And the rough surface of the super-hydrophobic anti-icing coating can reduce the effective contact area between the coating and dirt, water drops have an opportunity to take away most dirt on the surface when rolling down to the super-hydrophobic surface, and the anti-fouling effect can be achieved to a certain extent. According to the anti-icing ceramic insulator provided by the utility model, the reduction of flashover voltage of the insulator caused by icing and the occurrence of ice disaster emergency repair are greatly reduced, the occurrence of aging, cracking and slag falling caused by the fact that the ceramic insulator is exposed to wind, sand, wind and the sun can also be reduced, and the anti-icing ceramic insulator is simple in structure and convenient to use. The method is more suitable for large-scale popularization and application.

The utility model relates to the field of insulators, in particular to a ceramic insulator for a high-low voltage power transmission line, which comprises an insulator and a chassis, the bottom of the insulator is provided with the chassis, the upper end face of the chassis is provided with through holes in a front-back symmetrical manner, the upper end face of the chassis is provided with a fixing groove, and the left end face in the fixing groove is rotatably provided with an adjusting lead screw through a bearing. Adjusting sliding blocks are installed on the outer side wall of the adjusting lead screw in a bilateral symmetry mode, a fixing plate is installed on the upper end face of each adjusting sliding block, a plurality of limiting frames are installed at the inner side end of each fixing plate from top to bottom, and a fixing screw rod is installed at the bottom of the base plate. And the limiting frame is used for clamping and fixing the winding part, so that the winding and mounting stability is ensured, and the phenomenon that the binding rope is easy to break and fall off after being used for a long time during binding rope fixing is avoided.

The utility model relates to the technical field of medical disinfection equipment, in particular to a plasma electric field generator with a double-layer protection function, which comprises a reaction cavity frame, four preformed holes which are vertically symmetrical are formed in the left part and the right part of the reaction cavity frame and are used for circuit connection, and 11 dust collection plates are connected between the front part and the rear part of the reaction cavity frame. 10 groups of corona electrodes which are symmetrical up and down are connected between the front part and the rear part of the reaction cavity frame, each group comprises two pieces, and the corona electrodes on the upper layer and the lower layer are arranged at equal intervals. The utility model provides a gradient double-layer protection structure, through differentiated material combination and space reconstruction, while the compactness of equipment is maintained, the insulation effect of a ceramic insulator is realized, the phenomena of current leakage and short circuit are effectively prevented, a physical isolation space reserved between layers can effectively block a breakdown arc diffusion path, and the service life of the equipment is prolonged. In addition, the shell forms final safety redundancy, and continuous and safe operation of equipment is ensured.

The application discloses a flash connecting method of ceramic insulators, which comprises the following steps: abutting the joint surfaces of the ceramic insulators coated with conductive colloid; abutting the conductive rings against the joint surfaces of the ceramic insulators; applying super high voltage or super high current to the conductive rings to force the conductive colloid to conduct electricity and cause the flash connection of the ceramic insulators; cutting off the power supply; and removing the conductive rings after the ceramic insulators are cooled to room temperature. By abutting the conductive rings against the joint surfaces of the two insulators, the super high voltage or super high current of the super capacitor is used to heat the conductive colloid on the joint surfaces of the insulators, so that the mass transfer effect of the insulators on the two sides is caused, and the instant flash connection is realized. The connecting temperature is significantly reduced, and the connecting time is shortened. The two ceramic insulators can be connected in seconds by using the method, the energy consumption can be reduced by using the super capacitor, and the application can be widely applied to the field of super large size power porcelain.

The utility model discloses a low-stress lead ceramic insulator sealing structure, which comprises a ceramic insulator and a lead, an inner sealing ring is arranged at the left end of the ceramic insulator, an outer sealing ring is arranged at the right end of the ceramic insulator, the inner sealing ring is conical, the outer sealing ring is cylindrical, a sealing hole is arranged in the ceramic insulator, and the lead is arranged in the sealing hole. The lead is installed in the sealing hole and connected with the inner sealing ring and the outer sealing ring respectively, and the inner sealing ring and the outer sealing ring are welded to the two ends of the ceramic insulator with the lead as the axis. Through the structure, the metalized layer, the inner sealing ring, the outer sealing ring and the lead are connected with one another to form a symmetrical sealing structure, the sealing stress is small, the sealing strength is high, the service life of a product is prolonged, and the safety of the product is enhanced.

The invention relates to the technical field of ceramic insulator production, and particularly discloses a ceramic insulator production mud blank shaping device which comprises a machining table, a rotary storage barrel, an internal knife rest mounting table, an internal fettling knife assembly, a driving reset assembly, a supporting table structure and an external fettling knife assembly, and a bearing is fixedly mounted in the middle of one side of the machining table; according to the mud blank shaping device for ceramic insulator production, through cooperation of the rotary storage barrel, the internal fettling cutter assembly, the supporting table structure, the external fettling cutter assembly and the drilling structure, it is guaranteed that the exterior and the interior of a mud blank can be fettled and drilled at the same time while it is guaranteed that the mud blank can rotate smoothly; therefore, secondary fettling operation does not need to be carried out after the green body is pressed and formed, the operation that the green body is turned over and the exterior of the green body is fettled after the fettling operation on the interior of the green body is completed is avoided, then the time needed by procedure switching is avoided, and the fettling efficiency is improved.

The invention discloses a large-size electronic packaging shell and a manufacturing method thereof, and belongs to the technical field of electronic packaging. The packaging shell comprises a metal shell body and a metal cover body, wherein the metal shell body is made of 4J29 kovar alloy or carbon structural steel with the carbon content ranging from 0.08% to 1.3%; the sealing insulator is embedded in the bottom of the metal shell and comprises a hollow cylindrical ceramic body, and a tungsten composite metal layer and a metal coating are sequentially formed on the inner surface and the outer surface of the ceramic body from inside to outside; the ceramic body is made of aluminum nitride or silicon nitride; and the leading pin is inserted into the ceramic insulator, and the material of the leading pin is beryllium bronze. According to the packaging shell, the problems of stress deformation of the leading-out end and damage to the sealing area caused by thermal mismatch are avoided, so that the device failure caused by the stress deformation is avoided, and the sealing performance and long-term reliability of the device are ensured.

The application belongs to the technical field of insulator assembly and manufacturing, and particularly relates to a ceramic insulator automatic pin insertion machine and a working method thereof. The space between two adjacent insulators is limited, which leads to inconvenient pin insertion. The two insulators need to be spread apart by an assembler during pin insertion, which affects the pin insertion efficiency. Meanwhile, the insufficient operation space may cause damage to the insulators during assembly. The following scheme is proposed, which comprises a pin insertion base provided with two installation side plates. The ceramic insulator automatic pin insertion machine and the working method thereof have the effect of improving the pin insertion assembly efficiency of the ceramic insulator string. During the pin insertion connection of the ceramic insulator, the device can spread one of the adjacent insulators to one side to increase the operation space during pin insertion. Meanwhile, the device does not need to be assisted by an assembler, which increases the use effect of the device. Moreover, the increase of the operation space can also avoid damage to the insulators during assembly.

The utility model relates to the technical field of insulators, and provides an assembled electric porcelain insulator, which comprises a plurality of groups of mutually matched ceramic insulators and connecting rods, the connecting rods are arranged at the lower ends of the ceramic insulators, the bottom ends of the connecting rods are fixedly connected with chucks, the top ends of the ceramic insulators are internally provided with mounting cavities, and the mounting cavities are fixedly connected with the chucks. A clamping cavity is formed in the middle of the mounting cavity, three evenly-distributed sliding grooves are formed in the periphery of the mounting cavity, sliding clamping plates are slidably connected into the sliding grooves, sliding pins are fixedly connected to the rear ends of the sliding clamping plates, a rotating disc is rotatably connected to the top end of the mounting cavity, and arc-shaped guide grooves are formed in the positions, corresponding to the sliding pins, of the rotating disc. The sliding pins are slidably connected into the arc-shaped guide grooves corresponding to the sliding pins. According to the utility model, the operation is simple and fast during connection, installation and disassembly, and the installation time and labor cost can be reduced.

The utility model relates to the technical field of metal packaging shells, and discloses a ceramic sealing structure of a high-current-carrying square cross-section pin, which comprises a metal packaging shell and a square cross-section pin, a metalized frame is arranged on the side surface of the metal packaging shell, pin packaging openings are equidistantly arranged on the metalized frame, and the square cross-section pin is arranged on the metalized frame. And a ceramic insulator is packaged on the square cross section pin. According to the utility model, the ceramic insulator is packaged and installed on the square cross section pin, the ceramic insulator and the square cross section pin are sealed and connected together through the sealing installation inner ring, the anti-oxidation packaging outer ring and the sealing installation inner ring are made of kovar soldering lug materials, the bearing strength is high, and the ceramic insulator has an insulation characteristic, so that the requirements of insulation resistance and dielectric voltage resistance are met; the whole shell is made of metal materials, the packaging strength is good, durability is excellent, the device is provided with the metal packaging shell and the ceramic pin packaging structure, the packaging strength is high, the requirements of insulation resistance and dielectric voltage resistance are met, and assembling and positioning are convenient.

The present invention discloses a porcelain insulator string zero value detection auxiliary device, which is used to solve the problem of low efficiency and long time consumption of the insulation resistance method used for porcelain insulators in the prior art. It includes: each insulator sheet is connected to both ends of the insulation resistance meter after being connected in parallel; two insulator sheets form a group, and each group of insulator sheets is connected in parallel and sequentially connected to a current sampling circuit, a comparison circuit and a light alarm circuit, and the output end of each comparison circuit is connected to a sound alarm circuit, and the current sampling circuit, the comparison circuit, the light alarm circuit and the sound alarm circuit are all connected to a power module. Beneficial effects include: through the use of a special auxiliary device for zero value detection of porcelain insulator strings in substations, the test time is greatly shortened while also reducing the workload of maintenance personnel, greatly improving the accuracy and reliability of receiving test signals, improving the work efficiency of operators, and reducing operation time.

The invention discloses a high-reliability metal shell for a gyroscope, which is characterized by comprising a metal shell substrate made of iron-nickel alloy; the ceramic insulator is fixedly arranged in the through hole of the metal shell base body; the metal lead penetrates through the ceramic insulator and is electrically isolated from the ceramic insulator; wherein a plurality of adaptive structures for mounting chips are arranged in the metal shell base body, and flange holes for assembling and positioning are formed in the outer part of the metal shell base body.

An internally grounded filter feedthrough having a filter capacitor connected to a feedthrough is described. The feedthrough comprises an insulator having an active conductive pathway extending to its device and body fluid sides, and a ground conductive pathway extending part-way through the insulator thickness from the insulator device side. An undercut extending into the insulator sidewall communicates with the ground conductive pathway but does not extend to the insulator device or body fluid sides or to the active conductive pathway. A braze seals the insulator sidewall to the ferrule and extends into the undercut so that the braze contacts the ground conductive pathway. That way, the braze provides a ground electrical path from a capacitor ground via to the ground conductive pathway in the insulator connected to the braze sealed to the ferrule.

The present invention relates to the technical field of insulators, and specifically relates to a high-strength porcelain insulator. A lower clamp for fixedly clamping a power transmission cable in cooperation with an upper mounting member is rotatably installed on a limiting cross beam. A lower insertion block for inserting and cooperating with an insulating column is provided on the upper mounting member. A hook groove is provided on the lower insertion block. A plug rod assembly that is laterally inserted into the insulating column and cooperates with and is sleeved in the hook groove is provided. After the upper mounting member is turned and rotated along the limiting cross beam, the hook groove on the lower insertion block can be clamped on the upper cross beam. The beneficial effects are as follows: By providing an upper mounting member with a hook groove, during the disassembly and replacement process, by reversely rotating and hanging on the upper cross beam, the purpose of temporarily supporting the power transmission cable is achieved. At the same time, a plug rod assembly is provided to cooperate with the hook groove of the lower insertion block, which not only fixes the upper mounting member but also realizes the fixed installation of the insulating column. Moreover, the plug rod assembly is inserted inside the insulator and is not easily affected by the environment, ensuring the installation strength and stability of the insulator.

The present invention provides an environmentally friendly iron removal device for the production of ceramic power insulators, and relates to the field of power ceramic insulator equipment. The environmentally friendly iron removal device for the production of ceramic power insulators comprises an external protection box, and a slag discharge plate and a slurry discharge plate are respectively installed on both sides of the bottom of the external protection box, the slag discharge plate corresponds to the slurry discharge plate and is both connected to the inside of the external protection box, an iron removal assembly is installed at the upper end of the external protection box, a slurry compression assembly is installed in the middle of the external protection box, and also includes a sorting assembly installed at the bottom of the external protection box. The environmentally friendly iron removal device for the production of ceramic power insulators has a better processing effect by setting the iron removal assembly and the slurry compression assembly, and the piston is almost in contact with the bottom of the magnetic column, so the precipitated iron filings will also be adsorbed by the magnetic column, thereby in a processing flow, the iron filings in the mud can be basically completely removed, and by setting the scraping magnet group and the magnetic column, the porcelain scraping effect is good and not easy to wear.

The present disclosure relates to a pod propulsion unit. A pod propulsion unit 1 is proposed comprising: a housing (2); a support arm (3); a propeller shaft (5) rotatably supported within the housing by at least a first bearing arrangement (6) having a first bearing housing (7); a first fastening arrangement (11) for fastening the first bearing housing (7) to the housing (2). The first bearing housing (7) and the housing (2) are spaced apart from each other by a first electrically insulating arrangement (13) arranged between the first bearing housing (7) and the housing (2) and configured to electrically insulate the first bearing housing (7) from the housing (2). The first electrically insulating arrangement (13) comprises a first ceramic insulator (42) and the first ceramic insulator (42) contacts the first bearing housing (7) and the housing (2) so as to space the first bearing housing (7) and the housing (2) apart from each other.

The invention belongs to the technical field of insulators, and particularly relates to a green body filling device for electric porcelain insulator cementing, which is characterized in that the green body filling device comprises a base, a moving mechanism is arranged on one side of the top of the base, a supporting seat is arranged on one side of the top of the moving mechanism, and a supporting mechanism is arranged on the top of the supporting seat; the filling mechanism is arranged on one side of the top of the base, the supporting mechanism comprises a supporting plate, a rotating disc, two supporting plates, a support, a limiting bolt, a pressing plate and a fixing assembly, supporting legs are connected between the supporting plate and a supporting seat through bolts, a through hole is formed in the top of the supporting plate in a penetrating mode, and a rotating rod is rotationally connected to the inner wall of the through hole through a bearing. And the bottom of the supporting seat is connected with a second motor through a bolt. According to the invention, the stability of porcelain piece filling is improved, and the influence on the cementing of the electric porcelain insulator due to the deviation of the fitting between the metal accessory and the porcelain piece caused by the shaking of the porcelain piece in the rotating process is prevented.

The utility model relates to the technical field of polishing equipment, in particular to an electroceramic insulator surface polishing device which comprises a replaceable polishing head used for polishing the surface of an electroceramic insulator and a handheld rod, a polishing motor is embedded in the center of one end of the handheld rod, and a storage battery providing electric energy for the polishing motor is installed in the handheld rod. The replaceable polishing head is matched with the positioning ring sleeves at the two ends and the mounting screw holes and the mounting bolts on the inserting shafts, so that the polishing head can be conveniently mounted and dismounted, and polishing heads of different specifications or abraded polishing heads can be conveniently replaced; a polishing motor and a storage battery are embedded in a handheld rod, so that the whole device is convenient to hold and operate and has independent electric energy supply, and an external power supply is not needed; the rotating operation of the polishing head is conveniently controlled through the control switch; and the output end of the polishing motor is connected with the rotating shaft and then connected with the inserting shaft, finally, the replaceable polishing head is driven to rotate, and efficient polishing operation on the surface of the electric porcelain insulator is achieved.