CN203760303U - Voltage transformer for GIS (gas insulated switchgear) - Google Patents

Abstract

The utility model discloses a voltage transformer for a GIS (gas insulated switchgear). The voltage transformer has an innovation point that the effect of sharing one casing by a three-phase device body of a 220kV voltage transformer is realized, and in addition, the three-phase device body and three basin type isolators are in l-shaped arrangement. The voltage transformer mainly and structurally comprises a base, a casing, basin type isolators, a conducting tube, a high-low-voltage coil component, an iron core, an inflating valve, bottom feet and a pressure release device, wherein the high-low-voltage coil component, the iron core, the conducting tube and the basin type isolators are arranged in the casing, the iron core is distributed inside the casing in a 1 shape, the high-low-voltage component is wound on the iron core, the three basin-type isolators are arranged on the top end of the casing in the 1 shape, the conducting tube is arranged in the center of the basin type isolators, downwards extends and is connected with the high-low voltage component. The three-phase device body of the voltage transformer shares one casing, and in addition, the three-phase device body and the three basin type isolators are all in 1-shaped arrangement, so the voltage transformer for the GIS has the advantages that the structure is more compact, the dimension of the GIS is greatly reduced, and the cost of the GIS is reduced.

Description

GIS voltage transformer

Technical field

The utility model relates to a kind of voltage transformer, is specifically related to a kind of GIS voltage transformer of compact conformation.

Background technology

Voltage transformer is the indispensable a kind of electrical equipment of the transmission of electricity such as power plant, electric substation and electric power system.It is mainly for to the power supply of measuring instrument and protective relaying device, is used for voltage, power and the electric energy of measurement circuitry, or is used for the expensive equipment in protection circuit, motor and transformer in the time of line failure.Cubicle Gas-Insulated Switchgear (GIS) is little with its floor space, and all components and parts are completely enclosed within metal shell, and external environmental interference is little, reliability is high, the advantages such as maintenance aspect is easy for installation, and operating cost is low obtain applying more and more widely in bulk of worldwide electricity industry.

At present, generally use JDQXFH-220 type single-phase potential transformer on existing market, three single-phase potential transformers are arranged on GIS above side by side, take up room large, and installation and repairing inconvenience, and be unfavorable for GIS miniaturization.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of 220kV GIS three-phase in one tank type voltage mutual of compact conformation.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of GIS voltage transformer, its innovative point is: the three-phase device body of having realized 220kV voltage transformer shares a housing, and three-phase device body and three disc insulators are all yi word pattern arranges, and primary structure comprises base, housing, disc insulator, contact tube, high-voltage coil and low-voltage coil parts, iron core, charge valve, footing and pressure relief device;

Described floor installation is on footing, and base lower end is provided with charge valve and pressure relief device, and pressure relief device is installed on middle part, base lower end, and charge valve is installed on base lower end one side;

Described housing is fixed on base upper end, and housing upper end and protective cover are tightly connected, and hull outside wall line segment is provided with secondary terminal box, fills sulfur hexafluoride gas in housing; In housing, be also provided with high-voltage coil and low-voltage coil parts, iron core, contact tube and disc insulator;

Described unshakable in one's determination one has three, is in-line and is arranged in enclosure interior, and iron core is fixed on base, is wound with high-voltage coil and low-voltage coil parts on iron core;

The quantity of described disc insulator is three, is yi word pattern and is arranged in the top of housing, and be positioned at the top of housing iron core, and disc insulator center is provided with contact tube, and contact tube, to downward-extension, is connected with high-voltage coil and low-voltage coil parts.

The beneficial effects of the utility model: the disc insulator that three yi word patterns are arranged is set by the housing top at voltage transformer, disc insulator below correspondence arranges the iron core that three yi word patterns are arranged, on iron core, be wound with high-voltage coil and low-voltage coil parts, disc insulator center arranges contact tube and is connected with high-voltage coil and low-voltage coil parts, GIS is compacter by the structure of voltage transformer, greatly reduce the size of GIS, saved the cost of GIS.

Brief description of the drawings

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

Fig. 2 is front view of the present utility model.

Fig. 3 is end view of the present utility model.

Fig. 4 is vertical view of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated.

GIS voltage transformer as Figure 1-4, mainly comprises base 7, housing 4, disc insulator 1, contact tube 2, high-voltage coil and low-voltage coil parts 5, iron core 6, charge valve 8, footing 9 and pressure relief device 10.

Base 7 is arranged on footing 9, and base 7 lower ends are provided with charge valve 8 and pressure relief device 10, and pressure relief device 10 is installed on base 7 middle parts, lower end, and charge valve 8 is installed on base 7 lower end one sides; Housing 4 is fixed on base 7 upper ends, and housing 4 upper ends and protective cover 11 are tightly connected, and housing 4 lateral wall line segments are provided with secondary terminal box 12, the interior filling sulfur hexafluoride gas 3 of housing 4; In housing 4, be also provided with high-voltage coil and low-voltage coil parts 5, iron core 6, contact tube 2; Unshakable in one's determination 6 have 3, are in-line and are arranged in housing 4 inside, and unshakable in one's determination 6 are fixed on base 7; Unshakable in one's determination 6 is C type structure, on iron core 6, is wound with high-voltage coil and low-voltage coil parts 5; The quantity of disc insulator 1 is three, is yi word pattern and is arranged in the top of housing 4, and be positioned at the top of housing 4 iron cores 6, and disc insulator 1 center is provided with contact tube 2, and contact tube, to 2 downward-extensions, is connected with high-voltage coil and low-voltage coil parts 5.

More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. a GIS voltage transformer, it is characterized in that: the three-phase device body of 220kV voltage transformer shares a housing, and three-phase device body and three disc insulators are all yi word pattern arranges, and primary structure comprises base, housing, disc insulator, contact tube, high-voltage coil and low-voltage coil parts, iron core, charge valve, footing and pressure relief device;

Described floor installation is on footing, and base lower end is provided with charge valve and pressure relief device, and pressure relief device is installed on middle part, base lower end, and charge valve is installed on base lower end one side;

Described housing is fixed on base upper end, and housing upper end and protective cover are tightly connected, and hull outside wall line segment is provided with secondary terminal box, fills sulfur hexafluoride gas in housing; In housing, be also provided with high-voltage coil and low-voltage coil parts, iron core, contact tube and disc insulator;

Described unshakable in one's determination one has three, is in-line and is arranged in enclosure interior, and iron core is fixed on base, is wound with high-voltage coil and low-voltage coil parts on iron core;

The quantity of described disc insulator is three, is yi word pattern and is arranged in the top of housing, and be positioned at the top of housing iron core, and disc insulator center is provided with contact tube, and contact tube, to downward-extension, is connected with high-voltage coil and low-voltage coil parts.