CN203224515U - An inflation assembly type high-voltage grading ring - Google Patents

Abstract

The utility model discloses an inflatable assembled high-voltage equalizing ring, which solves the problem of large volume and inconvenient transportation existing in the existing equalizing ring. Including a metal connection ring (4) sleeved on the general cap (3), a conductive ring (5) on the metal cloth is arranged directly above the metal connection ring (4), and a conductive ring (5) on the metal cloth is arranged under the conductive ring (5) on the metal cloth. There are three upper nuts (11) arranged at equal intervals on the surface, one end of the upper stud bolt (7) is screwed with the upper nut (11), and the other end of the upper stud bolt (7) is connected with the upper threaded hole (8 ) screw connection, a conductive ring under metal cloth (6) is arranged directly under the metal connecting ring (4), and three lower nuts (12) are arranged at equal intervals on the upper surface of the conductive ring under metal cloth (6), respectively. One end of the lower stud bolt (10) is screwed with the lower nut, and the upper and lower conductive rings of the metal cloth are all provided with an in-line upper inflation nozzle. The utility model is suitable for use in high-voltage partial discharge and withstand voltage tests.

Description

An inflatable assembled high voltage equalizing ring

technical field

The present invention relates to a device used in partial discharge and withstand voltage tests of high-voltage equipment, in particular to an inflatable high-voltage equalizing ring for measuring partial discharge of transformers.

Background technique

The high-voltage equalizing ring is an important auxiliary equipment in the high-voltage test. In the partial discharge and withstand voltage test of the high-voltage equipment on site, it is necessary to install a high-voltage equalizing ring on the high-voltage terminal according to the requirements. However, due to the high-voltage level of the high-voltage equipment The required pressure equalizing ring is large in size and heavy in weight, which causes problems such as inconvenient storage and transportation, difficulty in on-site installation, and damage to high-voltage bushings.

Contents of the invention

The invention provides an inflatable assembled high-voltage equalizing ring, which solves the technical problems of large volume, heavy storage and inconvenient transportation existing in the existing equalizing rings.

The present invention solves the above problems through the following technical solutions:

An inflatable assembled high-voltage equalizing ring, including a transformer, a transformer bushing is fixedly arranged on the transformer, a general cap is arranged on the top of the transformer bushing, a metal connecting ring is sleeved on the general cap, and the metal connecting ring Three upper threaded holes are arranged at equal intervals on the upper surface of the metal connecting ring, three lower threaded holes are arranged on the lower surface of the metal connecting ring at equal intervals, and a conductive ring on the metal cloth is arranged directly above the metal connecting ring , on the lower surface of the conductive ring on the metal cloth, three upper nuts are arranged at equal intervals in arcs, one end of the upper stud bolt is screwed with the upper nut, and the other end of the upper stud bolt is screwed with the upper threaded hole. At the same time, a conductive ring under the metal cloth is arranged directly under the metal connecting ring, and three lower nuts are arranged at equal intervals on the upper surface of the conductive ring under the metal cloth, and one end of the lower stud bolt is screwed together with the lower nut. The other end of the lower stud bolt is screwed together with the lower threaded hole, an embedded upper inflation nozzle is arranged on the upper conductive ring of the metal cloth, and an embedded lower inflation nozzle is arranged on the lower conductive ring of the metal cloth.

A movable metal cloth upper cover is arranged on the embedded upper gas charging nozzle, and a movable metal cloth lower cover is arranged on the embedded lower charging nozzle, and the transformer bushing is a transformer high voltage side bushing or a transformer low voltage side bushing Tube.

The invention solves the problem that the high-voltage equalizing ring is so large and wide that it is inconvenient to store and transport, it is not easy to install, and it is easy to cause high-voltage sleeves by using the assembled and disassembled metal ring fasteners and the inflatable conductive circular objects The problem of tube damage, the inflatable high-voltage equalizing ring is mainly used for high-voltage partial discharge and temporary voltage equalization and shielding in withstand voltage tests. Due to its light weight, it reduces the bearing capacity of the bushing and reduces the damage rate of the bushing ; Its specifications can be realized from 110kV to 1000kV.

Description of drawings

Fig. 1 is the structural representation under the use state of the present invention;

Fig. 2 is a schematic structural view of the present invention in a top view direction;

Fig. 3 is a schematic diagram of the structure of the present invention in the direction of the front view.

Detailed ways

An inflatable assembled high-voltage equalizing ring, including a transformer 1, a transformer bushing 2 is fixedly installed on the transformer 1, a general cap 3 is arranged on the top of the transformer bushing 2, and a metal connection is sleeved on the general cap 3 The ring 4 is provided with three upper threaded holes 8 at equal intervals on the upper surface of the metal connection ring 4, and three lower threaded holes 9 are respectively arranged on the lower surface of the metal connection ring 4 at equal intervals. A conductive ring 5 on the metal cloth is arranged directly above the ring 4, and three upper nuts 11 are arranged at equal intervals on the lower surface of the conductive ring 5 on the metal cloth, and one end of the upper stud bolt 7 is screwed to the upper nut 11. Together, the other end of the upper stud bolt 7 is screwed together with the upper threaded hole 8, and a conductive ring 6 under the metal cloth is arranged directly below the metal connecting ring 4, and the upper surface of the conductive ring 6 under the metal cloth is equally spaced by arcs. Three lower nuts 12 are respectively arranged on the ground, one end of the lower stud bolt 10 is screwed together with the lower nut 12, the other end of the lower stud bolt 10 is screwed together with the lower threaded hole 9, and the conductive ring 5 on the metal cloth An embedded upper inflation nozzle 13 is arranged on the top, and an embedded lower inflation nozzle 14 is arranged on the conductive ring 6 under the metal cloth.

A movable metal cloth upper cover is provided on the embedded upper charging nozzle 13, and a movable metal cloth lower cover is provided on the embedded lower charging nozzle 14. The transformer bushing 2 is a transformer high-voltage side bushing or a transformer bushing. Low pressure side bushing.

The present invention first connects the lower conductive ring 6 of the upper metal cloth and the upper conductive ring 5 of the metal cloth with the metal connecting ring 4 by connecting stud bolts, nuts and gaskets to ensure reliable and stable connection; The nozzle inflates the conductive ring 6 under the metal cloth and the conductive ring 5 on the metal cloth to ensure that the upper and lower pressure equalizing rings are in the shape of a ring after inflation. The assembled and inflated inflatable high-voltage equalizing ring is installed on the transformer bushing, and can also be fixed with metal fasteners.

Claims (2)

1. inflate assembly type high voltage grading ring for one kind, comprise transformer (1), be set with bushing shell for transformer (2) at transformer (1), be provided with army cap (3) on the top of bushing shell for transformer (2), it is characterized in that, army cap (3) is being socketed with metal abutment ring (4), on the upper surface of metal abutment ring (4), uniformly-spaced be respectively arranged with three upper screwed holes (8) radian, on the lower surface of metal abutment ring (4), uniformly-spaced be respectively arranged with three following threaded holes (9) radian, directly over metal abutment ring (4), be provided with conducting ring on the hardware cloth (5), on the lower surface of conducting ring on the hardware cloth (5), uniformly-spaced be respectively arranged with three top nuts (11) radian, one end of last stud bolt (7) is screwed onto with top nut (11), the other end of last stud bolt (7) is screwed onto with upper screwed hole (8), under metal abutment ring (4), be provided with conducting ring under the hardware cloth (6), uniformly-spaced be respectively arranged with three lower nuts (12) on the upper surface of conducting ring under hardware cloth (6) radian, one end of following stud bolt (10) is screwed onto with lower nut (12), the other end of following stud bolt (10) is screwed onto with following threaded hole (9), conducting ring on the hardware cloth (5) is provided with the embedded charging connector (13) of going up, and conducting ring under the hardware cloth (6) is provided with embedded charging connector (14) down.

2. a kind of inflation assembly type high voltage grading ring according to claim 1, it is characterized in that, charging connector on embedded (13) is provided with movable hardware cloth loam cake, embedded charging connector (14) down is provided with movable hardware cloth lower cover, and described bushing shell for transformer (2) is transformer high-voltage side sleeve pipe or step down side sleeve pipe.

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