CN102403111A - Outdoor box-type 10-20kV/220V transformer - Google Patents

Abstract

The present invention is an outdoor box-type 10-20kV/220V transformer, comprising a high-voltage insulating bushing, a metal box body, a transformer body, a transformer secondary winding outlet terminal board, and channel steel; the high-voltage insulating bushing passes through the The upper end surface of the metal box is fixed, and a certain space distance is maintained between the transformer body and the metal box. On the steel; the outdoor box-type 10-20kV/220V transformer is developed according to the actual needs of the distribution network site and is used for power distribution lines, transformer site intelligent control, protection devices and switch automatic operation mechanisms, which can avoid oil immersion Type transformer leakage oil, epoxy resin casting type transformer aging and cracking defects; its application can improve the safe operation of the distribution network system, improve the reliability of power supply, reduce the damage of the transformer, increase the power supply, and increase the number of enterprises and social benefits.

Description

Outdoor box type 10～20kV/220V transformer

technical field

The invention relates to an outdoor box-type 10-20kV/220V transformer, which is a power supply applied to distribution network lines, on-site intelligent control of transformers, protection devices and automatic switch operation mechanisms.

Background technique

At present, with the rapid development of industrial and agricultural production, the rapid improvement of the national economy, the continuous improvement of people's living standards, the unprecedented development of the power industry, and the rapid development of the national smart grid construction. The power of the power grid is transformed and delivered to thousands of households through the distribution network and distribution transformers. The current operating distribution network lines, on-site intelligent control of transformers, protection devices and automatic switch operation mechanism power supplies use oil-immersed transformers. , Epoxy resin casting type; the disadvantage of oil-immersed transformers is that it is easy to leak oil, insulation is difficult to guarantee, and often fails; the disadvantage of epoxy resin casting type transformers is that epoxy resin is easy to age and crack when exposed to wind and sun, causing power outages ACCIDENT. If the outdoor box-type transformer is used, the above defects can be avoided.

Contents of the invention

The invention provides an outdoor box-type 10-20kV/220V transformer, which can avoid the oil leakage failure of the oil-immersed transformer and the aging, cracking and power failure accidents of the epoxy resin pouring transformer.

Outdoor box-type 10-20kV/220V transformer, including high-voltage insulating bushing, metal box body, transformer body, transformer secondary winding outlet terminal board, and channel steel; the high-voltage insulating bushing passes through the upper end surface of the metal box body Fixed, keep a certain space distance between the transformer body and the metal box body, the outlet terminal board of the secondary winding of the transformer is installed outside the lower end of one side of the metal box body, and the upper end of the outlet terminal board is equipped with a rain cover , the transformer body and the metal box are installed on the channel steel.

The metal box is in a three-dimensional shape, six sides are metal plates, and there are two holes on it for installing high-voltage insulating bushings. The transformer body is installed in the metal box, and the metal box is installed on the channel steel. The outer side of the lower end of one side of the box body is installed with the outlet terminal board of the secondary winding of the transformer.

The transformer body includes an iron core, a primary winding, a secondary winding, and epoxy resin; the iron core is O-shaped, the primary winding is placed on one side of the O-shaped iron core, and the secondary winding is placed on the iron core O The other side of the font; the epoxy resin is used to cast the transformer body, and the overall casting package is tightly adhered; the two ends of the primary winding are respectively connected to the high-voltage two-phase line through the high-voltage insulating bushing; the two ends of the secondary winding The terminal is connected to the distribution network line, the on-site intelligent control of the transformer, the protection device and the switch automatic operation mechanism circuit.

The outdoor box-type 10-20kV/220V transformer is developed according to the actual needs of the site and is used for distribution network lines, transformer site intelligent control, protection devices and switch automatic operating mechanism power supply. Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the outdoor box-type 10-20kV/220V transformer is designed reasonably, and ideally realizes the on-site intelligent control and protection device of power distribution lines and transformers. And switch automatic operation mechanism power supply. It will play a positive role in guaranteeing the intelligent construction of distribution network power supply. The specific advantages of this outdoor box-type 10-20kV/220V transformer are as follows:

The invention provides an outdoor box-type 10-20kV/220V transformer, which can avoid the oil leakage failure of the oil-immersed transformer and the aging and cracking defects of the epoxy resin pouring transformer due to wind and sun exposure.

The application of outdoor box-type 10-20kV/220V transformers can reduce the occurrence of intelligent control and protection device accidents in distribution network and distribution transformer systems, increase power supply, and increase corporate and social benefits.

The application of outdoor box-type 10-20kV/220V transformers can improve the safe operation of the distribution network system, improve the reliability of power supply, reduce the damage of transformers, and reduce the investment in distribution network system equipment. It will play a positive role in guaranteeing the intelligent construction of distribution network power supply.

Description of drawings

Fig. 1 is the structural schematic diagram of outdoor box type 10～20kV/220V transformer of the present invention;

Fig. 2 is a schematic diagram of the metal box structure of the present invention;

Fig. 3 is a composition diagram of the transformer body of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is the outdoor box-type 10～20kV/220V transformer structure schematic diagram of the present invention, comprises high-voltage insulation bushing 1, metal box body 2, transformer body 3, transformer secondary winding outlet wiring board 4, transformer installation channel steel 5; The high-voltage insulating bushing is fixed through the upper end surface of the metal box, and a certain space distance is maintained between the transformer body and the metal box, and the outlet terminal board of the secondary winding of the transformer is installed outside the lower end of one side of the metal box , the upper end of the outlet wiring board is equipped with a rain cover, and the transformer body and the metal box are installed on the channel steel. The transformer body is installed in a metal box to prevent the transformer from being exposed to wind and sun. A certain space distance is maintained between the transformer body and the metal box. For heat dissipation and ventilation, the two ends of the primary winding of the outdoor box-type transformer pass through the upper two high-voltage insulation The bushing and lead-out wires are respectively connected to the high-voltage two-phase line, and the outgoing wire of the secondary winding of the transformer is connected to the distribution line, the on-site intelligent control of the transformer, the protection device and the switch automatic operation mechanism circuit.

Fig. 2 is a schematic diagram of the structure of the metal box of the present invention, the metal box is a three-dimensional shape, six sides are metal plates 2, and two holes 21 are arranged on the upper end surface; it is used to install a high-voltage insulating bushing, and a transformer body is installed in the metal box. The metal box is installed on the channel steel 5, and the transformer secondary winding outgoing line terminal board 4 is installed outside the lower end of one side of the metal box body, and the rainproof cover is adorned on the top of the outgoing line terminal board. The metal box is used to protect the transformer from wind and sun.

Fig. 3 is a composition diagram of the transformer body of the present invention, the transformer body includes an iron core 32, a primary winding 31, a secondary winding 33, and epoxy resin 34; the iron core is O-shaped, and the primary winding is sleeved on the iron core On one side of the O-shape, the secondary winding is set on the other side of the O-shape of the iron core; the epoxy resin is used to cast the transformer body, cast as a whole, tightly wrapped and glued, the purpose is to prevent moisture and keep the transformer body well insulated. The two terminals L1 and L2 of the primary winding pass through the two high-voltage insulating bushings at the upper end, and the lead wires are respectively connected to the high-voltage two-phase line; the two terminals K1 and K2 of the secondary winding are connected to the power distribution line, the on-site intelligent control of the transformer, Protection device and switch automatic operation mechanism circuit.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (3)

1. An outdoor box-type 10-20kV/220V transformer, characterized in that it includes a high-voltage insulating bushing, a metal box body, a transformer body, a transformer secondary winding outlet terminal board, and channel steel; the high-voltage insulating bushing wears The upper end surface of the metal box is fixed, and a certain space distance is maintained between the transformer body and the metal box. The secondary winding outlet terminal board of the transformer is installed outside the lower end of one side of the metal box. A rainproof cover is installed on the top of the outlet wiring board, and the transformer body and the metal box are installed on the channel steel. 2. The outdoor box-type 10-20kV/220V transformer according to claim 1, characterized in that: the metal box is a three-dimensional shape, six sides are metal plates, and there are two holes on it for installing high-voltage insulating bushings , the transformer body is installed in the metal box, the metal box is installed on the channel steel, and the secondary winding outlet terminal board of the transformer is installed outside the lower end of one side of the metal box. 3. The outdoor box-type 10-20kV/220V transformer according to claim 1, characterized in that: the transformer body includes an iron core, a primary winding, a secondary winding, and epoxy resin; the iron core is O-shaped, The primary winding is set on one side of the O-shaped iron core, and the secondary winding is set on the other side of the O-shaped iron core; the epoxy resin is used to cast the transformer body, and the overall casting package is tightly glued; the two primary windings The ends are connected to the high-voltage two-phase line through the high-voltage insulating bushing respectively; the two ends of the secondary winding are connected to the distribution network line, the on-site intelligent control of the transformer, the protection device and the switch automatic operation mechanism circuit.

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