CN204792424U - Capacitor - Google Patents

Abstract

The utility model discloses a capacitor, be provided with stairstepping electric capacity core between high voltage electrode and insulating cylinder and the metallic shield pipe, be provided with two-layer semiconductor polar plate on the electric capacity core, can make through electric capacity partial pressure along the voltage distribution on insulating cylinder surface even to the evenly distributed of electric field has been guaranteed, the insulating cylinder is inside to set up middle potential shield cover, can push away middle potential to insulating cylinder middle part position to make the outer electric field distribution of sleeve pipe tend to more even, outer electric field distribution improves, the insulating cylinder outside is provided with the ground potential shield ring, has solved the inhomogeneous problem of marginal electric field distribution, and this capacitor has the even advantage of electric field strength, has wide market prospect.

Description

a capacitor

technical field

The utility model relates to the field of capacitor equipment, in particular to a capacitor.

Background technique

A capacitor is a device that holds an electric charge. Capacitors are one of the most widely used electronic components in electronic equipment, and are widely used in DC blocking, coupling, bypass, filtering, tuning loops, energy conversion, control, etc. in circuits. With the rapid development of electronic information technology, the upgrading speed of digital electronic products is getting faster and faster. The production and sales of consumer electronic products, mainly flat-panel TVs (LCD and PDP), notebook computers, digital cameras and other products, continue to grow, driving Capacitor industry growth. At present, the advantages of capacitors are that the internal electrode structure of the insulating cylinder is simple, the weight of the product is light, the processing and manufacturing of parts is relatively easy, and there is no need to invest in special manufacturing equipment, such as casing core winding machines and core drying processing equipment. The distribution of the electric field along the surface of the insulating cylinder is extremely uneven, and it is an extremely uneven electric field. The electric field intensity near the outer surface of the insulating cylinder at the lower end of the high-voltage electrode is much higher than that of other parts, even reaching or exceeding the ionization of the air. field strength value. A capacitor is needed to solve the problem of electric field strength.

Utility model content

The purpose of the utility model is to provide a capacitor, which optimizes the traditional capacitor and has the advantage of uniform electric field intensity.

In order to achieve the above purpose, the utility model provides the following technical solutions: a capacitor is composed of a base, an insulating cylinder, a low-voltage electrode, and a high-voltage electrode. The insulating cylinder is fixed on the base by screws, and the low-voltage electrode is As a rigid support, it is installed inside the insulating cylinder. The high-voltage electrode is wrapped on the outside of the low-voltage electrode. The two ends of the high-voltage electrode are provided with high-voltage electrode closing rings. The top of the insulating cylinder is provided with a ring under the anti-corona The upper ring is covered, and the lower ring of the anti-halation cover and the upper ring of the anti-halation cover are connected by a bracket.

Preferably, a stepped capacitor core is arranged between the high-voltage electrode, the insulating cylinder and the metal shielding tube.

Preferably, two layers of semiconductor plates are arranged on the capacitor core.

Preferably, an intermediate potential shielding cover is arranged inside the insulating cylinder, and the intermediate potential shielding cover is arranged outside the metal shielding tube.

Preferably, a ground potential shielding ring is provided outside the insulating cylinder, and the ground potential shielding ring is fixed on the side wall of the insulating cylinder through insulating supports.

The beneficial effects of adopting the above technical solutions are: the utility model provides a capacitor, a ladder-shaped capacitor core is arranged between the high-voltage electrode, the insulating cylinder and the metal shielding tube, and two layers of semiconductor capacitors are arranged on the capacitor core. The pole plate can make the voltage distribution along the surface of the insulating cylinder uniform through capacitive voltage division, thereby ensuring the uniform distribution of the electric field. The intermediate potential shield is set inside the insulating cylinder, which can push the intermediate potential to the middle of the insulating cylinder, so that The distribution of the electric field outside the bushing tends to be more uniform, and the distribution of the external electric field is improved. The ground potential shielding ring is arranged on the outside of the insulating cylinder, which solves the problem of uneven distribution of the edge electric field. The capacitor has the advantage of uniform electric field strength and has a wide range of market expectation.

Description of drawings

Fig. 1 is the structural representation of a kind of capacitor of the utility model;

Fig. 2 is a schematic structural view of a ladder-shaped capacitor core;

Among them: 1-base, 2-insulation cylinder, 3-low-voltage electrode, 4-high-voltage electrode, 5-screw, 6-metal shielding tube, 7-high-voltage electrode closing ring, 8-ring under anti-corona cover, 9- Ring on anti-corona cover, 10-bracket, 11-ladder capacitor core, 12-semiconductor plate, 13-intermediate potential shielding cover, 14-ground potential shielding ring, 15-insulation support.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Figure 1, a capacitor is composed of a base 1, an insulating cylinder 2, a low-voltage electrode 3, and a high-voltage electrode 4. 6 is installed inside the insulating cylinder 2 as a rigid support, the high-voltage electrode 4 is wrapped on the outside of the low-voltage electrode 3, the two ends of the high-voltage electrode 4 are provided with a high-voltage electrode closing ring 7, and the top of the insulating cylinder 2 is provided with an anti-corona The lower ring 8 of the anti-halation cover and the upper ring 9 of the anti-halation cover are connected by a bracket 10 between the lower ring 8 of the anti-halation cover and the upper ring 9 of the anti-halation cover.

In addition, as shown in FIG. 2, a ladder-shaped capacitor core 11 is arranged between the high-voltage electrode 4, the insulating cylinder 2 and the metal shielding tube 6, and two layers of semiconductor plates 12 are arranged on the capacitor core 11. An intermediate potential shielding cover 13 is arranged inside the insulating cylinder 2, and the intermediate potential shielding cover 13 is arranged on the outside of the metal shielding tube 6, and a ground potential shielding ring 14 is arranged on the outside of the insulating cylinder 2, and the ground potential shielding ring 14 passes through the insulation The support 15 is fixed on the side wall of the insulating cylinder 2 .

Based on the above, the utility model provides a capacitor. A ladder-shaped capacitor core is arranged between the high-voltage electrode, the insulating cylinder and the metal shielding tube. The capacitor core is provided with two layers of semiconductor plates, which can pass the capacitor Divide the voltage to make the voltage distribution along the surface of the insulating cylinder uniform, thereby ensuring the uniform distribution of the electric field. The intermediate potential shield is set inside the insulating cylinder, which can push the intermediate potential to the middle of the insulating cylinder, so that the electric field distribution outside the bushing tends to be In order to be more uniform, the distribution of the external electric field is improved. The outer side of the insulating cylinder is provided with a ground potential shielding ring, which solves the problem of uneven distribution of the edge electric field. The capacitor has the advantage of uniform electric field strength and has broad market prospects.

It can be known from technical knowledge that the utility model can be realized through other implementations without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the utility model or within the range equivalent to the utility model are included in the utility model.

Claims (5)

1. A capacitor, characterized in that: it is composed of a base, an insulating cylinder, a low-voltage electrode, and a high-voltage electrode, the insulating cylinder is fixed on the base by screws, and the low-voltage electrode is arranged on the insulating cylinder as a rigid support through a metal shielding tube Inside, the high-voltage electrode is wrapped on the outside of the low-voltage electrode, the two ends of the high-voltage electrode are provided with high-voltage electrode closing rings, and the top of the insulating cylinder is provided with a ring under the anti-corona cover and an upper ring of the anti-corona cover. The ring under the halo mask and the upper ring of the anti-halo mask are connected by a bracket. 2 . The capacitor according to claim 1 , wherein a stepped capacitor core is arranged between the high voltage electrode, the insulating cylinder and the metal shielding tube. 3 . 3. A capacitor according to claim 2, characterized in that two layers of semiconductor plates are arranged on the capacitor core. 4 . The capacitor according to claim 1 , wherein an intermediate potential shielding cover is arranged inside the insulating cylinder, and the intermediate potential shielding cover is arranged outside the metal shielding tube. 5 . The capacitor according to claim 1 , wherein a ground potential shielding ring is provided outside the insulating cylinder, and the ground potential shielding ring is fixed on the side wall of the insulating cylinder through an insulating support.