Glue sealing process for magnetic induction sunken mutual inductor

Abstract

The invention discloses a glue sealing process for a magnetic induction sunken type mutual inductor, and belongs to the field of mutual inductors, the glue sealing process for the magnetic induction sunken type mutual inductor is characterized in that a layer of sunken magnetic balls is laid on an epoxy resin outer layer, and then the sunken magnetic balls can be effectively guided to sink inwards through a magnetic plate, so that longitudinal stirring in the epoxy resin outer layer is realized, therefore, the overflow of bubbles in the epoxy resin outer layer is effectively accelerated, the quantity of gaps of the glue sealing layer is remarkably reduced, and cracks during use are effectively avoided. On the other hand, when cracks are generated in the epoxy resin outer layer after pouring or use for a period of time, iron powder is faster than epoxy resin in heat absorption and heat conduction, and the melting or softening time difference between the glue sealing layer and the sinking magnetic ball is increased, so that the crystal glue in the sinking magnetic ball overflows and infiltrates into the crack when the glue sealing layer is not melted, the repair of the internal crack is realized, the repair difficulty is effectively reduced, and meanwhile, the utilization rate of the mutual inductor is effectively improved.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a glue sealing process for magnetically induced indented transformers. Background technique [0002] In order to transmit electric energy, the power system often uses AC voltage and high current circuits to send electric power to users, which cannot be directly measured by instruments. The function of the transformer is to reduce the AC voltage and large current proportionally to the value that can be directly measured by the instrument, which is convenient for the instrument to measure directly, and at the same time provide power for the relay protection and automatic devices. The transformer for power system is a special transformer that transmits the information of high voltage and high current of the power grid to the secondary side of low voltage and small current for metering, measuring instruments, relay protection and automatic devices. The contact element, its primary windin...

AI Technical Summary

Problems solved by technology

[0003] The windings of the existing transformers are generally potted with epoxy resin and the shell, but during the glue sealing, there are likely to be air bubbles inside the epoxy resin layer, resulting in certain gaps in the formed glue seal layer, resulting in easy Cracks lead to potential safety hazards in the transformer, and when cracks occur inside the glue seal layer, it is difficult to repair, resulting in a reduction in the service life and utilization of the transformer

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