8 results about "Epoxy insulators" patented technology

The invention discloses a GIL / GIS epoxy insulator residual stress suppression method and device based on sound field assisted post-curing, and the main steps are as follows: after the epoxy insulator is cured at a first stage, the curing degree is gt; and the temperature of the liquid medium in the container filled with the liquid medium and the ultrasonic vibration auxiliary curing time are regulated and controlled, and the post-curing process of the GIL / GIS epoxy insulating part is completed, so that the residual stress at the bonding position of the insulator epoxy and the metal is effectively inhibited, and the mechanical property of the epoxy resin insulator is remarkably improved. The mechanical performance of the epoxy insulating part in the gas insulated switchgear under the complex operation condition is improved.

The invention discloses a modified epoxy insulator for reducing surface charge accumulation and a preparation method thereof, and the method comprises the following steps: (1) dissolving dried nano Al2O3 particles in a curing agent, and dispersing to obtain a nano particle curing agent solution; (2) mixing the nano particle curing agent solution, epoxy resin and an accelerant in a vacuum environment, and curing to obtain a nano modified insulator sample; and (3) carrying out ultrasonic treatment on the nano-modified insulator sample by adopting absolute ethyl alcohol, drying, and then carrying out ozone treatment to obtain the modified epoxy insulator capable of reducing surface charge accumulation. According to the invention, material body transport capability can be reduced, charge accumulation through body transport is inhibited, insulator surface conductance is enhanced, and surface charge dissipation is accelerated.

The utility model relates to the technical field of circuit breakers, in particular to a mining high-voltage vacuum circuit breaker, which comprises a case, a conductive sliding seat, a grounding seat, a linear driving assembly, a conductive sliding block B, a reciprocating driving assembly and a transmission assembly. An epoxy insulator is arranged on the case, and a tulip contact and a vacuum tube are arranged in the epoxy insulator; a conductive sliding block A is arranged on the conductive sliding seat, the conductive sliding block A is connected with a movable contact, and an insulating seat is arranged on the movable contact; the grounding seat is arranged in the epoxy insulator; the linear driving assembly is in driving connection with the insulating seat; one end of the conductive sliding block B is connected with the other end of the conductive sliding seat and the movable end of the vacuum tube; the reciprocating driving assembly is in driving connection with the conductive sliding block B; the transmission assembly is in transmission connection with the linear driving assembly and the reciprocating driving assembly. According to the utility model, grounding of the load end is realized through the three-phase vacuum tube arc extinguish chamber, the safety coefficient is high, and the operation is simple and convenient.

The present invention relates to an epoxy insulator and a preparation method thereof, comprising an epoxy insulator body, wherein the surface of the epoxy insulator body is provided with a bottom layer, an intermediate layer and a surface layer stacked sequentially from the inside to the outside, wherein, by mass, the raw material composition of the bottom layer comprises 2-4 parts of nano-scale Al2O3 particles, 8-12 parts of epoxy resin, 6-7 parts of a first thermal curing agent, and 0.2-0.4 parts of a first silane coupling agent, the raw material composition of the intermediate layer comprises 1-2 parts of nano-scale Al2O3 particles, 0.5-0.7 parts of nano-scale SiO2 particles, 8-12 parts of epoxy resin, 6-7 parts of a second thermal curing agent, and 0.1-0.3 parts of a second silane coupling agent, and the raw material composition of the surface layer comprises 1-3 parts of nano-scale SiO2 particles, 8-12 parts of epoxy resin, and 6-7 parts of a third thermal curing agent. The epoxy insulator of the present invention has good surface electric field uniformity, high flashover voltage and excellent insulation performance.

The high-creeper voltage transformer comprises an epoxy insulator and a shell, the shell is sleeved on the epoxy insulator, a first umbrella skirt is arranged at the sleeve of the high-voltage end of the shell, and a second umbrella skirt is arranged at the low-voltage end of the shell, the first umbrella skirt is made of silicon rubber, and self-repairing capsules are arranged at positions, which are not more than 2 mm away from the surface, in the interiors of the first umbrella skirt and the second umbrella skirt, the self-repairing capsules comprise a capsule body, the capsule body contains a curing agent, the capsule body is a plastic film capsule body, the self-repairing capsules in the first umbrella skirt adopt a combined structure integrally formed with the first umbrella skirt, and the curing agent in the capsule body is a curing agent mixed with a volatile conductive solvent. Through the self-repairing capsules and the carbon nanotube heating film, after the sensor senses local discharge, the produced cracks and conductive channels can be repaired, further damage can be avoided, and the safety and stability are effectively improved.

The application discloses a kind of epoxy resin insulator insulation deterioration analysis and fault diagnosis method and system, belong to insulator deterioration analysis technical field, including: the appearance of the deteriorated insulator is detected;The whole set of insulation of the deteriorated insulator is measured, leakage current test and initial discharge voltage test are carried out to insulation resistance, interlayer insulation is measured to insulation resistance;From the deteriorated insulator, insulator sample and dirt are taken, microtopography observation and infrared spectrum analysis are carried out to sample, and dirt is analyzed by energy spectrum and pH value;According to the above detection analysis result, the deteriorated insulator is analyzed, and the deterioration level and reason are obtained.The level and reason of insulation deterioration are determined in multiple aspects, so that the epoxy resin insulator is prevented and maintained specifically, and the occurrence of insulator insulation deterioration problem is effectively prevented.

The present invention relates to a prefabricated joint and, more specifically, to an integrated insulator having a structure in which a unit used as an insulating material and an insulating container are integrally formed, and a prefabricated joint. An integrated insulator of a prefabricated joint according to the present invention comprises: an epoxy unit in which a conductive metal center electrode to which a conductor of a power cable is coupled is formed in the center, an epoxy insulator is molded on the outer periphery of the center electrode, flanges are formed at both ends for fastening with adjacent components, respectively, and the inner surface is interfacially bonded to a rubber stress cone; and an insulating container integrally molded on the outer periphery of one side of the epoxy unit and having a screw tap formed thereon for fastening with adjacent components.

The invention relates to an epoxy insulator and a preparation method thereof, the epoxy insulator comprises an epoxy insulator body, and the surface of the epoxy insulator body is provided with a bottom layer, a middle layer and a surface layer which are sequentially stacked from inside to outside. The bottom layer is prepared from the following raw materials in parts by weight: 2-4 parts of nanoscale Al2O3 particles, 8-12 parts of epoxy resin, 6-7 parts of a first heat curing agent and 0.2-0.4 part of a first silane coupling agent, and the middle layer is prepared from the following raw materials in parts by weight: 1-2 parts of nanoscale Al2O3 particles, 0.5-0.7 part of nanoscale SiO2 particles, 8-12 parts of epoxy resin, 6-7 parts of a second heat curing agent and 0.1-0.3 part of a second silane coupling agent. The surface layer is prepared from the following raw materials in parts by weight: 1-3 parts of nanoscale SiO2 particles, 8-12 parts of epoxy resin and 6-7 parts of a third thermal curing agent. The epoxy insulator disclosed by the invention has good surface electric field uniformity, high flashover voltage and excellent insulating property.