CN205491644U - Abnormal shape shield assembly - Google Patents

Abstract

The utility model discloses a special-shaped shielding device, which comprises a left shielding body, a right shielding body and a clamp. The left shielding body and the right shielding body are both hollow and irregular hemispherical as a whole, and are hollow irregular spheres after fastening. The two sides of the sphere are provided with conductive rod through-holes with inwardly curved surfaces, and the bottom of the sphere is provided with operating holes with inwardly curved surfaces. The edges of the through-holes of the conductive rods on both sides are provided with clamps. The left shield and the right The shielding body is connected to the conductive rod through a clamp. The utility model can effectively solve the shielding problem of the three-dimensional or multi-dimensional electric field of AC and DC ultra-high voltage electrical equipment, has simple structure, convenient installation and disassembly, greatly reduces working hours and improves efficiency.

Description

A special-shaped shielding device

technical field

The utility model relates to a shielding device, in particular to a three-dimensional or multi-dimensional electric field shielding device for AC and DC ultra-high voltage electrical equipment, and belongs to the technical field of electronic equipment.

Background technique

With the continuous improvement of the transmission voltage level, the anti-corona and partial discharge problems of AC and DC UHV electrical products have become increasingly prominent. Traditional shielding is difficult to shield against three-dimensional or multi-dimensional electric fields, and installation is also difficult.

Contents of the invention

The technical problem to be solved by the utility model is to provide a special-shaped shielding device to solve the problem of shielding three-dimensional or multi-dimensional electric fields in view of the defects existing in the prior art.

In order to solve this technical problem, the utility model provides a special-shaped shielding device, including a left shielding body, a right shielding body and a clamp. The back is a hollow irregular sphere, the two sides of the sphere are provided with through-holes for the conductive rods with inwardly curved surfaces, and the bottom is provided with operating holes with inwardly curved surfaces, and the edges of the through-holes for the conductive rods on both sides are provided with clips. The hoop, the left shield and the right shield are connected to the conductive rod through the hoop.

The top surface and side of the left shielding body are provided with an outwardly extending connecting plate, and the connecting plate is provided with threaded holes; the top surface and sides of the right shielding body are provided with countersunk heads concentric with the threaded holes on the connecting plate holes; the left shield and the right shield are fastened with screws through the connecting plate and the counterbore.

The top surface and the side of the left shielding body are provided with an outwardly extending connecting plate, and the connecting plate is provided with threaded holes; matched; the left shield and the right shield are fastened and connected through the connecting plate and the slot.

The connection between the connecting plate and the card slot is a buckle connection, a bolt connection or a screw connection.

The clamp is directly welded to the left shield and the right shield; or it is a separate structure with the left shield and the right shield, and is connected through a connecting piece.

The left shielding body, the right shielding body and the hoop are made of sheet metal parts.

The surface of the sheet metal part is coated with insulating varnish.

Beneficial effects: the utility model can effectively solve the shielding problem of the three-dimensional or multi-dimensional electric field of AC and DC UHV electrical equipment, has a simple structure, is convenient to install and disassemble, greatly reduces working hours, and improves efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the utility model left shielding body;

Fig. 3 is the structural representation of the utility model right shielding body;

Fig. 4 is a schematic cross-sectional view of the combined assembly of the utility model;

Fig. 5 is an enlarged schematic diagram of part A in Fig. 4 of the present utility model.

In the figure: 1 left shield body, 2 right shield body, 3 clamp, 4 connection plate, 5 countersunk hole, 6 threaded hole, 7 conductive rod through hole, 8 operation hole.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Shown in Fig. 1 is the structural representation of the utility model.

Figure 4 is a schematic cross-sectional view of the combined assembly of the present utility model.

The utility model comprises a left shielding body 1, a right shielding body 2 and a hoop 3.

The left shielding body 1 and the right shielding body 2 are both hollow irregular hemispherical as a whole, and they are hollow irregular spheres after fastening. The two sides of the sphere are provided with conductive rod through holes 7 with inwardly curved surfaces. An operating hole 8 with an inwardly curved surface is provided.

Clamps 3 are provided on the edges of the through holes 7 of the conductive rods on both sides, and the left shield 1 and the right shield 2 are connected to the conductive rods through the clamps 3 .

The clamp 3 is a split structure, and can be connected with the left shield body 1 and the right shield body 2 through connectors;

The clamp 3 can be directly welded on the left shield 1 or the right shield 2, and then connected through a connector and fixed on the conductor;

Figure 2 is a schematic structural view of the left shielding body of the present invention.

FIG. 3 is a schematic structural view of the right shielding body of the present invention.

Fig. 5 is an enlarged schematic diagram of part A in Fig. 4 of the present utility model.

The top surface and the side of the left shielding body 1 are provided with an outwardly extending connecting plate 4, and the connecting plate 4 is provided with a threaded hole 6; The threaded hole 6 is concentric with the counterbore 5; the left shield 1 and the right shield 2 are fastened with the counterbore 5 through the connecting plate 4 and fastened with screws.

The top surface and the side of the left shielding body 1 are provided with an outwardly extending connecting plate 4, and the connecting plate 4 is provided with a threaded hole 6; the top surface and the side of the right shielding body 2 are provided with a card slot, the The slot matches the connecting plate 4; the left shield body 1 and the right shielding body 2 are fastened and connected by the connecting plate 4 and the slot.

The connection between the connecting plate 4 and the slot is a buckle connection, a bolt connection or a screw connection.

The joints between the connecting plates 4 and the slots of the left shielding body 1 and the right shielding body 2 are rounded.

The left shielding body 1, the right shielding body 2 and the clip 3 are made of sheet metal parts.

The surface of the sheet metal part is coated with insulating varnish, which has the functions of surface protection and insulation.

Working principle of the utility model:

When a metal conductor passes through a high voltage or an extra high voltage, in an electrostatic equilibrium state, no matter it is a hollow conductor or a solid conductor; it must be an equipotential body, and its internal field strength is zero. But the electric field intensity will be generated on its surface, and the electric field intensity depends on the insulation medium and the radius of curvature of the metal conductor. Under normal conditions, the insulating medium is a given parameter, so the design of the appearance shape of the metal conductor is the key to controlling the electric field intensity. In an open space, it is not necessary to consider the difficulty of installation and space control; and the current miniaturization design of high-voltage electrical appliances by users and the pursuit of stable performance. This requires that the field strength control and installation process requirements of the electrode conductors of high-voltage electrical appliances be solved in a small space. However, the present invention can maximize the radius of curvature of the metal conductor in a very small gas chamber, so that the electric field intensity on its surface can be controlled within the range of the design allowable value. The invention adopts two or more equal parts cutting and stress relief technology, and then assembles and uses, not only the assembly process is simple, but also the electric field intensity shielding effect is very good. Especially suitable for irregular multi-dimensional field strength shielding formed by the interlacing of various objects;

The invention can effectively solve the shielding problem of the three-dimensional or multi-dimensional electric field of AC and DC ultra-high voltage electrical equipment, has a simple structure, is convenient to install and disassemble, greatly reduces man-hours, and improves efficiency.

The above-mentioned embodiments of the utility model are only examples, not the only ones, and all changes within the scope of the utility model or equivalent to the scope of the utility model are surrounded by the utility model.

Claims (7)

1. A special-shaped shielding device, characterized in that: it comprises a left shielding body (1), a right shielding body (2) and a clip (3), and the left shielding body (1) and the right shielding body (2) are integrally It is a hollow irregular hemispherical shape, and after fastening, it becomes a hollow irregular sphere. On both sides of the sphere, there are conductive rod through holes (7) with an inwardly curved surface, and an operating hole (7) with an inwardly curved surface is provided at the bottom of the sphere 8), the edges of the through holes (7) of the conductive rods on both sides are provided with clamps (3), and the left shield (1) and the right shield (2) are connected to the conductive rods through the clamps (3). 2. The special-shaped shielding device according to claim 1, characterized in that: the top and side surfaces of the left shield (1) are provided with an outwardly extending connecting plate (4), and the connecting plate (4) is provided with There are threaded holes (6); the top and side surfaces of the right shielding body (2) are provided with countersunk holes (5) concentric with the threaded holes (6) on the connecting plate (4); the left shielding body (1 ) and the right shield (2) are fastened with screws through the connecting plate (4) and the counterbore (5). 3. The special-shaped shielding device according to claim 1, characterized in that: the top and side surfaces of the left shield (1) are provided with an outwardly extending connecting plate (4), and the connecting plate (4) is provided with There are threaded holes (6); the top surface and side of the right shielding body (2) are provided with card slots, and the card slots match the connecting plate (4); the left shielding body (1) and the right shielding body (2) Fastened and connected through the connecting plate (4) and the card slot. 4. The special-shaped shielding device according to claim 3, characterized in that: the connection between the connecting plate (4) and the slot is a buckle connection, a bolt connection or a screw connection. 5. The special-shaped shielding device according to claim 1, characterized in that: the clamp (3) is directly welded to the left shield (1) and the right shield (2); or connected to the left shield (1) It is a separate structure with the right shielding body (2), and is connected by a connector. 6. The special-shaped shielding device according to any one of claims 1-5, characterized in that: the left shield (1), the right shield (2) and the clamp (3) are made of sheet metal. 7. The special-shaped shielding device according to claim 6, characterized in that: the surface of the metal sheet is coated with insulating varnish.