Electronic tube plate electrode blocking capacitor

Abstract

The invention relates to a capacitor and particularly relates to an electronic tube plate electrode blocking capacitor which is used for an electronic tube plate electrode of high-frequency high-power transmission equipment. The electronic tube plate electrode blocking capacitor comprises a polytetrafluoroethylene barrel, inner and outer polar plates arranged on the inner and outer surfaces of the polytetrafluoroethylene barrel, a connection corner and a connection plate which are welded on the polar plate on the outer surface, an annular contact reed which is electrically connected with the electronic tube plate electrode and is arranged on the inner polar plate, and a cooling air pipe arranged under the polytetrafluoroethylene barrel, wherein the inner polar plate is a thin-wall metal inner barrel, and the thin-wall metal inner barrel used as the inner polar plate is combined with the polytetrafluoroethylene barrel through interference fit; the outer polar plate is a thin-wall metal outer barrel; and the thin-wall metal outer barrel used as the outer polar plate is combined with the polytetrafluoroethylene barrel through interference fit, and circular-arc-shaped corona rings are arranged at the two ends of the thin-wall metal outer barrel used as the outer polar plate. With the adoption of the electronic tube plate electrode blocking capacitor, the problem that the connection corner and a connection plate lamp are welded on the polar plates so that the insulation performance of part of the polytetrafluoroethylene barrel is reduced is solved.

Description

technical field [0001] The invention relates to a capacitor, in particular to an electron tube plate DC blocking capacitor (hereinafter referred to as a DC blocking capacitor) used for the electron tube plate of high-frequency and high-power transmission equipment. Background technique [0002] DC blocking capacitor is the core component of high-frequency and high-power (electron tube) transmission equipment, and occupies an important position in transmission equipment. The existing DC blocking capacitor used for 500kW shortwave transmitter is a cylindrical capacitor, and its structure is as follows figure 1 As shown, it includes: polytetrafluoro cylinder 01, the inner and outer surfaces of the polytetrafluoro cylinder 01 are coated with metal silver-plated layers 09 and 010 as the inner and outer plates of the capacitor, and the metal silver-plated layer 010 of the outer plate is A connecting angle 02 and a connecting plate 04 are welded, and a supporting angle 03 is welde...

AI Technical Summary

Problems solved by technology

[0005] 2. In order to ensure the withstand voltage requirements of the capacitor, the two ends of the polytetrafluoro cylinder are set as arc-shaped outward flanging, which will cause the complexity of the processing and manufacturing of the polytetrafluoro cylinder and increase the cost

[0006] 3. Copper cooling air duct is heavy and expensive

[0007] 4. The electrical connection between piece 1 and the electronic tube is connected by the connecting ring of the piece. The connecting ring is composed of the ring body and the reeds located inside and outside the ring. The inner wall is in contact with electricity, and under the condition of high current, the reed often has poor contact, heat, or even burns out.

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