30results about How to "Anti-pollution flashover" patented technology

The invention discloses an anti-icing voltage-sharing plate. The anti-icing voltage-sharing plate comprises a cylindrical connecting metal fitting (1) and an umbrella-like disc (2), wherein the disc (2) is fixedly sheathed on the connecting metal fitting (1). The external end face of the connecting metal fitting (1) is provided with a spherical concave body (11), and the inner end of the connecting metal fitting (1) is provided with a spherical end (12); and the disc (2) is provided with a disc body (21), the edge of the disc body (21) is an annular body (22), a drain hole (23) is distributed in the annular body (22), and a lower edge drain hole (24) is distributed on the lower bottom surface of the annular body (22). The voltage-sharing plate has the advantages that 1) the voltage-sharing plate can delay the icing time by more than 10-15 times in a heavily polluted region of a power transmission line, and enhance icing flashover voltage by 18%-25%; 2) the voltage-sharing plate can prevent filthy on the top of a tower from forming a rain curtain to cause rain flashover; 3) the formation of the rain flashover of bird droppings can be prevented; 4) the flashover voltage of lightning strokes can be enhanced; 5) and the size of a pole tower window and line corridors can be reduced, and further, the investment is saved.

The invention provides an antifouling flashover paint for electrical equipment and a preparation method thereof, belonging to the technical field of paint compositions. An antifouling flashover coating for electrical equipment, prepared from the following raw materials in parts by weight: 30-45 parts of room temperature vulcanized silicone rubber, 6-15 parts of fluorinated modified silicone resin, 5-10 parts of n-butanol, cyclic 5-15 parts of hexanone, 10-20 parts of dimethyl carbonate, 0.5-1.2 parts of bis(γ-trimethoxysilylpropyl)amine, 8-16 parts of filler and 0.2-1.0 parts of auxiliary agent. The anti-fouling flashover coating of the present invention can form a super-hydrophobic surface when coated on the surface of electrical equipment, has good self-cleaning ability, and effectively prevents the occurrence of pollution flashover of electrical equipment.

The invention discloses a method for optimal selection and configuration of power transmission and transformation insulators, and relates to methods for insulator manufacturing or insulator selection, in particular to a method for optimal selection and configuration of power transmission and transformation insulators of an extra-high voltage alternate current and direct current transmission line. The method comprises the steps of establishing an aerodynamic characteristic simulation model of typical power transmission and transformation insulators; carrying out computer simulation on air vortex and air pressure on the surface layers of the typical power transmission and transformation insulators, the contamination property and the deposition property of contamination particles; giving the contamination property, including the contamination quantity, contamination distribution and the saturation contamination degree, of the typical power transmission and transformation insulators; establishing a computer simulation electric arc dynamic model of contamination insulator arc-over; carrying out computer simulation on flashover performance of the typical insulators under different contamination conditions; selecting optimal selection and configuration parameters of the power transmission and transformation insulators or giving advice on the periodicity of an electric transmission line and seeking ameliorative measures for preventing pollution flashover according to results of contamination simulation and flashover simulation.

The invention discloses a ceramic material for preventing corona discharge and pollution flashover on the surface of high-voltage lines, which is composed of TiO2 and auxiliary material Y2O3, and the TiO2 includes rutile phase TiO2 and anatase phase TiO2. The invention also discloses a spraying method thereof. Firstly, a mechanical powder mixer is used to mix the above-mentioned weighed components evenly to obtain ceramic material powder; , after cooling. The present invention uses TiO2 powders of different crystal forms as raw materials, adopts a mechanical mixing method to prepare ceramic material powders, and then conducts plasma spraying on the surface of aluminum transmission lines to prepare functional TiO2 coatings. The thickness of the coatings is 0.1 to 0.2 mm. The layer has the advantages of good surface wettability, high insulation, and photocatalytic performance in the transmission line process, and can prevent corona discharge and pollution flashover on the surface of high-voltage lines.

The invention provides a 500 KV electric transmission line insulator electrification water washing method. The method mainly comprises the steps of setting the water resistivity of water and adjusting pressure of a hydraulic giant; judging the wind direction and wind power on a tower and adjusting the length of a water column according to the wind direction and the wind power; placing the hydraulic giant at a given position and washing triphase insulators of 500 KV electric transmission lines in sequence from bottom to top; washing insulator chains on the downwind side firstly and then washing insulator chains on the weather side during insulator chain washing, and washing piece by piece from bottom to top and washing by starting from the wire side in sequence for suspension insulator chains; and judging whether phenomena of sewage dripping and partial arcing striking appear for washed insulators, and rewashing corresponding insulators if the phenomena appear. The 500 KV electric transmission line insulator electrification water washing method enables electrification water washing to be achievable for most of the 500 KV electric transmission lines, line outrage is reduced, pollution flashover is avoided, safety and stability of power grids are ensured, and good economic and social benefits are created.

An anti-vibration hammer for a trolley, which includes a trolley, the anti-vibration hammer is suspended at the bottom of the trolley, and the interior of the trolley includes a first chamber and a second chamber. The second perforation passed through, the first perforation is provided on the side wall of the first chamber, and the pull wire mechanism is fixed in the first chamber, one end of the pulling rope is connected with the pull wire mechanism, and the other end is connected from the inside of the first chamber to the outside. And pass through the first through hole; a wire pulley is provided in the second chamber, and the wire pulley is used to drive the pulley to move on the overhead power transmission wire. The purpose of the present invention is to solve the problem that when the position of the existing anti-vibration hammer needs to be adjusted on the overhead power transmission conductor, the workload is heavy, which is likely to bring threats to human safety, and the adjusted position is likely to have a large error, which cannot meet the requirements. Technical issues concerning the anti-vibration requirements of the actual overhead transmission conductors.

The invention provides a 220 KV and below 220 KV electric transmission line insulator electrification water washing method. The method mainly comprises the steps of setting the water resistivity of water and adjusting pressure of a hydraulic giant; judging the wind direction and wind power on a tower and adjusting the length of a water column according to the wind direction and the wind power; placing the hydraulic giant at a given position and washing triphase insulators of 220 KV and below 220 KV electric transmission lines in sequence from bottom to top; washing insulator chains on the downwind side firstly and then washing insulator chains on the weather side during insulator chain washing, and washing piece by piece from bottom to top and washing by starting from the wire side in sequence for suspension insulator chains; and judging whether phenomena of sewage dripping and partial arcing striking appear for washed insulators, and rewashing corresponding insulators if the phenomena appear. The 220 KV and below 220 KV electric transmission line insulator electrification water washing method enables electrification water washing to be achievable for most of the 220 KV and below 220 KV electric transmission lines, line outrage is reduced, pollution flashover is avoided, safety and stability of power grids are ensured, and good economic and social benefits are created.

A fiber-optic temperature sensing system suitable for outdoor high-voltage contacts, which includes a fiber-optic rotating reflective temperature measurement module and a high-voltage isolation string. The high-voltage isolation string consists of a glass fiber tube with plugs at both ends and a coaxial sleeve It is composed of a plurality of insulating disks outside the glass fiber tube, and one end of the glass fiber tube is fixedly connected to the metal frame of the power station through a flange; The plugs passing through the glass fiber tube and its two ends are connected with the photoelectric converter of the temperature monitoring instrument. The invention has good wind resistance, rain resistance, snow resistance, frost resistance and ice resistance, can operate safely and stably under various harsh natural conditions, effectively improves the reliability of the monitoring system, and ensures the safe operation of the power system .

The invention relates to the field of motor trains, in particular to a motor train roof composite insulator with anti-fouling umbrella skirts. The motor train roof composite insulator with the anti-fouling umbrella skirts comprises a supporting body. The axially-arranged umbrella skirts are arranged around the side wall of the supporting body. The slant angle of the upper surfaces, relative to the radial section of the supporting body, of the umbrella skirts ranges from 8.5 degrees to 9.5 degrees. The slant angle, relative to the radial section of the supporting body, of the lower surfaces of the umbrella skirts ranges from -0.8 degree to -1.2 degrees. The umbrella skirts have the efficient anti-fouling capacity and has the good fouling accumulation characteristic under the dynamic environment, it is effectively ensured that the surfaces of the umbrella skirts are clean, pollution flashover is prevented, the motor train roof composite insulator is completely suitable for safe operation of the motor trains under the high wind speed condition, and meanwhile the phenomenon that rain flashover is caused due to the fact that the rainwater is easily connected into a chain shape when it rains heavily or intensely through the dense umbrella skirt structural design is avoided.

The invention relates to an antifouling flashover superhydrophobic self-cleaning coating, which is characterized in that it comprises the following components: silicone glass glue, polyvinylidene fluoride powder particles, photocatalyst, anti-arc agent and organic solvent, the silicon The ketone glass glue is 5-20wt% of the organic solvent, the polyvinylidene fluoride powder particles are 10-50wt% of the silicone glass glue, and the photocatalyst is 10-50wt% of the silicone glass glue , the anti-arcing agent is 5-20wt% of the silicone glass glue. The surface contact angle of the coating formed by using this coating is greater than 150°, has good insulation, and the breakdown voltage is greater than 15kV / mm.