Needle-plate electrode medium space charge and partial-discharge ultrahigh-frequency signal synchronous measurement device
An ultra-high frequency signal, medium space technology, applied in the field of electrical variable measurement
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[0023] Such as figure 1 As shown, this embodiment includes: metal pressure equalizing ball 1, needle electrode 2, inner insulator 3, outer insulator 4, height adjustment gear 5, shielding cylinder 6, sensing and measuring antenna 7, lower electrode 8, piezoelectric film 9. The sound wave absorbing layer 10 and the shielding box 11, wherein: the metal pressure equalizing ball 1 is connected to the upper end of the needle electrode 2, the needle electrode 2 passes through the through hole in the middle of the inner insulating member 3, and the inner insulating member 3 passes through the outer insulating member 4 The through hole of the height adjustment gear 5 is matched with the tooth structure on the outer insulator 4, and the relative position of the inner insulator 3 and the outer insulator 4 can be adjusted by rotating the height adjustment gear 5 to select a suitable needle-plate distance. The surface of the lower electrode 8 is provided with a concentric T-shaped groove ...
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