5 results about "Silicone rubber insulators" patented technology

The invention relates to a silicone rubber insulator laser cleaning parameter optimization method based on multi-physics field simulation. The method comprises the following steps that 1, a multi-physics field coupling finite element model of a pulse laser cleaning silicone rubber surface aging layer is established; step 2, calculating a temperature field evolution curve and a thermal stress field evolution curve of the key area of the aging layer under different laser power parameters based on the multi-physics field coupling finite element model constructed in the step 1; and step 3, based on the temperature field and thermal stress field evolution curves of the key area of the aging layer under different laser powers obtained in the step 2, analyzing a synergistic effect relationship between vibration and an ablation mechanism, obtaining time-space distribution characteristics of the temperature and thermal stress of the silicone rubber aging layer under the action of pulse laser, and screening out the silicone rubber aging layer which can realize initial stripping of the aging layer through thermal stress. And thorough removal can be realized through thermal decomposition, and a power interval in which a matrix is damaged due to too high energy is avoided. According to the method, evolution of a transient temperature field and a thermal stress field can be accurately simulated, and the space-time synergistic effect of vibration and an ablation mechanism is quantitatively analyzed, so that a safe and efficient process parameter window is predetermined, and scientific guidance is provided for actual cleaning production.

The application belongs to the technical field of insulator production, and particularly relates to a synthetic silicon rubber insulator and a processing method thereof. In view of the problem that too much excess silicon rubber mud is extruded on a table top in the process of manufacturing a silicon rubber insulator, resulting in serious waste of the mud and inconvenience of recycling, the following scheme is proposed, which comprises a core rod, the two ends of the core rod are reserved with end column with a diameter larger than the middle diameter, and the middle of the core rod is wrapped with a plurality of outer layer insulating strings connected in a disc shape, and the outer layer insulating strings are pressure die cast from synthetic silicon rubber material. The application can not only reserve a large space when the core rod wrapped with raw materials is placed and the synthetic silicon rubber insulator body is taken, so as to facilitate operation, but also can be supplemented by the operation of a supplementing barrel for supplementing if there is a gap in the mold cavity in the first round of pressure die casting, so as to ensure that the mold cavity is completely filled, so that the amount of silicon rubber mud extruded outside in the traditional way can be greatly reduced, and waste can be reduced.

This invention belongs to the field of high voltage and insulation technology, and provides a method for evaluating the deflection of silicone rubber insulator skirts based on bidirectional fluid-structure interaction. The method includes: establishing a model with air as the fluid domain and the insulator as the structural field; simulating the inlet boundary conditions and parameters of the airflow field in the fluid domain, then dividing the fluid domain into a fluid domain mesh and dividing the skirt surface into several moving mesh regions, and reconstructing these moving mesh regions in real time using an automatic mesh reconstruction method; setting the skirt material parameters, skirt and core rod structural parameters in the structural field, then dividing the skirt into a solid domain mesh, and using the skirt edge displacement as the skirt deflection; dynamically exchanging skirt surface pressure and structural deformation data bidirectionally, setting the calculation step size and total time, and iteratively solving the skirt edge deflection data through bidirectional fluid-structure interaction. This invention addresses the problem of insufficient research on the deflection of silicone rubber insulator skirts.

This invention relates to the field of high-voltage insulation technology, specifically disclosing a method for improving the external insulation performance and weather resistance of a DC through-wall bushing, comprising the following steps: (1) performing ultraviolet grafting and sol-gel coating pretreatment on the silicone rubber insulator of the bushing assembly; (2) performing gradient fluorination on the pretreated silicone rubber, and then performing gradient drying of the entire bushing assembly from low temperature to high temperature; (3) performing drying pretreatment on the metal parts, then performing co-assembly of the metal parts and the bushing assembly, and finally encapsulating SF6 gas to achieve a synergistic improvement in the interface insulation performance of the DC bushing. This invention forms a molecular-level fluorine atom pre-assembled layer on the surface of silicone rubber through a specific pretreatment process. This structure effectively reduces the crack density of the fluorinated layer, increases the flashover voltage, reduces interfacial charge accumulation, and significantly enhances the hydrophobicity, electrical erosion resistance, and anti-pollution flashover capability of the material surface.

The invention discloses an antimicrobial composite material for ultra-high voltage power transmission in a humid and hot environment and a preparation method thereof, the material takes vinyl-terminated polydimethylsiloxane (V-PDMS) as a matrix, and the material comprises the following components in parts by weight: 100 parts of V-PDMS, 3-5 parts of hydrogen-containing silicone oil, 0.8-1.5 parts of a platinum catalyst, 0.01-0.15 part of a nano-silver / zirconium phosphate silver-loaded composite antibacterial agent and 10-15 parts of a fumed silica reinforcing agent. The preparation method comprises the steps of matrix pretreatment, antibacterial agent nano-dispersion, vacuum blending vulcanization and segmented curing molding. Through composite antibacterial components and a synergistic cross-linking system, the problems that an existing silicone rubber insulator is insufficient in anti-microbial performance and prone to biological aging in a high-temperature and high-humidity environment are solved, long-acting efficient antibacterial performance is achieved, meanwhile, excellent thermal stability, electrical insulation performance and mechanical strength of the material are completely kept, and the service life of the material is prolonged. The cable is especially suitable for outdoor insulation equipment of ultra-high voltage transmission lines in hot and humid areas.