Preparation method of discharge electrode high-strength insulation structure

Abstract

The invention provides a preparation method of a discharge electrode high-strength insulation structure. The preparation method includes grooving on the surface of an inner electrode blank, dipping insulating fiber into insulating resin under vacuum pressure, and twining the insulating fiber crossly on the inner electrode blank under vacuum pressure to form an integrated insulating structure blank; putting the blank with the integrated insulating structure into a forming mold, dipping and encapsulating under vacuum pressure; curing and solidifying to form an integrated insulating structure; and at last, processing threads on the outer surface of the insulating layer of the integrated insulating structure. Since the preparation method of grooving on the inner electrode surface and twining the insulating fiber crossly on the inner electrode is adopted,, the insulating layer and the inner electrode are less prone to delaminating, and cementation is good. The vacuum encapsulating and solidifying method is adopted to enhance shock resistance of the insulating layer, so that air bubbles between insulating layers are reduced, rapid aging of the insulating layers is avoided, fissures in the insulating layers is not easy to happen, and reliability of the discharge electrode is further improved.

Description

technical field [0001] The invention relates to a preparation method of a high-strength insulating structure of a discharge electrode. Background technique [0002] Underwater plasma sound source is a pulse sound source that uses underwater high-voltage discharge to generate underwater shock waves. It has a series of advantages such as large sound power emission, narrow pulse, and wide frequency band. It has a wide range of applications in fields such as disinfection and sewage treatment, marine exploration and target detection. The discharge electrode is the core component of the electro-acoustic conversion that converts the electrical energy of the system into mechanical energy in the underwater plasma sound source, and directly determines the acoustic efficiency and working performance of the sound source. With the rapid development and wide application of pulse power technology, underwater plasma sound sources are developing towards higher voltage, high energy, and high...

AI Technical Summary

Problems solved by technology

However, during the continuous high-voltage pulse discharge process of electrodes with this structure, the central copper rod is easy to fall off from the filled insulating material under the action of shock waves, so that the insulating structure is no longer reliable. At the same time, after a period of discharge, the discharge electrode is seriously damaged Ablation without the ability to renew the center copper rod, only the entire electrode can be replaced

The patent "a plug-in EDM vibration source emission probe" (CN 201673264 U) adopts a high-voltage sealing and high-voltage insulation structure design between the cable connector and the EDM plug, which solves the problems of high-voltage sealing, high-voltage insulation, and easy installation Disassembly and other issues, but this insulation structure design cannot adapt to high-power and high-current underwater pulse discharge

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