CN114864242A

CN114864242A - Anti-arc safety photovoltaic transformer

Info

Publication number: CN114864242A
Application number: CN202210586717.3A
Authority: CN
Inventors: 孙国平; 李云
Original assignee: Zhenjiang Tianli Transformer Ltd corp
Current assignee: Zhenjiang Tianli Transformer Ltd corp
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-08-05

Abstract

The invention discloses an arc-preventing safety photovoltaic transformer which comprises a transformer body, wherein a binding post is arranged on the transformer body, an iron core is arranged in the transformer body, a winding is arranged on the iron core, an arc-preventing mechanism is arranged between the winding and the binding post, the arc-preventing mechanism comprises a protective shell, two groups of telescopic rods are fixedly connected in the protective shell, and the end parts of the two groups of telescopic rods are fixedly connected with movable conductive blocks; according to the invention, the arc-preventing mechanism is arranged, when an arc occurs in the transformer body, a large amount of gas is generated in the transformer body, the gas enters the connecting gas pipe from the gas inlet pipe, and then is inflated into the plurality of telescopic gas pipes through the connecting gas pipe, the telescopic gas pipes are extended after being ventilated to push the insulating base to move, and the insulating base moves to drive the two movable conducting blocks to be separated and disconnected, so that the connection between the winding and the binding post can be disconnected, a good arc-preventing effect is achieved, and the safety is effectively improved.

Description

Anti-arc safety photovoltaic transformer

Technical Field

The invention relates to the technical field of photovoltaic transformers, in particular to an arc-proof safety photovoltaic transformer.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, main components are a primary coil, a secondary coil and an iron core (magnetic core), the transformer is basic equipment for power transmission and distribution, the transformer is widely applied to the fields of industry, agriculture, traffic, urban communities and the like, and the transformer is needed to carry out power transmission and distribution in a photovoltaic system.

In the prior art, application number CN202120959600.6 discloses a high-stability photovoltaic transformer with good heat dissipation performance, which utilizes a first heat dissipation mechanism and a second heat dissipation mechanism to perform heat dissipation synchronously, so as to ensure good heat dissipation effect, but during the use process, the inside of the transformer is easy to generate electric arc, and the safety is not ideal enough.

Disclosure of Invention

The invention aims to provide an arc-proof safety photovoltaic transformer to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an arc-preventing safety photovoltaic transformer comprises a transformer body, wherein a binding post is installed on the transformer body, an iron core is installed in the transformer body, a winding is arranged on the iron core, and an arc-preventing mechanism is arranged between the winding and the binding post;

prevent that electric arc mechanism includes protective housing, two sets of telescopic links of the inside fixedly connected with of protective housing, it is two sets of the equal fixedly connected with activity conducting block of telescopic link tip, the cover is equipped with reset spring on the telescopic link, two the equal fixedly connected with insulator of a side surface that the activity conducting block is relative, fixedly connected with trachea on the insulator, it is a plurality of fixedly connected with connecting pipe between the trachea to stretch out and draw back, connecting pipe one end is connected with the intake pipe, intake pipe internally mounted has the check valve, the connecting pipe keeps away from the one end fixedly connected with bleed pipe of intake pipe, threaded connection has sealed lid on the bleed pipe.

As a further preferable mode of the present invention, the binding post is connected to one of the movable conductive blocks, and the winding is connected to the other movable conductive block.

As a further preferred aspect of the present technical solution, the two insulating bases on the movable conductive block are connected through a telescopic air tube, and the plurality of telescopic air tubes are communicated through a connecting air tube.

As a further preferred option of the technical solution, one end of the air inlet pipe is communicated with the inside of the transformer body, and the air discharge pipe penetrates through the protective casing and is communicated with the outside.

As a further preferred option of the technical solution, the protective casing is made of an insulating material, and the protective casing is fixedly connected with a mounting seat, on which a mounting bolt is arranged.

As a further preferred aspect of this technical scheme, all be equipped with screwed joint on connecting trachea and the intake pipe, be connected through screwed joint between connecting trachea and the intake pipe.

As a further preferred aspect of the present technical solution, the transformer body is fixedly connected with a plurality of heat dissipation fins, a plurality of heat dissipation frames are fixedly mounted at end portions of the heat dissipation fins, and heat dissipation fans are mounted inside the heat dissipation frames.

The invention provides an arc-proof safety photovoltaic transformer, which has the following beneficial effects:

(1) according to the invention, the arc-preventing mechanism is arranged, when an arc occurs in the transformer body, a large amount of gas is generated in the transformer body, the gas enters the connecting gas pipe from the gas inlet pipe, and then is inflated into the plurality of telescopic gas pipes through the connecting gas pipe, the telescopic gas pipes are extended after being ventilated to push the insulating base to move, and the insulating base moves to drive the two movable conducting blocks to be separated and disconnected, so that the connection between the winding and the binding post can be disconnected, a good arc-preventing effect is achieved, and the safety is effectively improved.

(2) According to the transformer, the protective shell can be conveniently detached and installed through the installation base by arranging the radiating fins, so that the maintenance is convenient, the transformer body can be well radiated through the plurality of radiating fins, the air flow around the radiating fins is promoted by using the radiating fan, and the radiating effect is effectively improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2A according to the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 2 at B in accordance with the present invention;

in the figure: 1. a transformer body; 2. a binding post; 3. a winding; 4. an iron core; 5. an arc prevention mechanism; 6. a protective housing; 7. a telescopic rod; 8. a movable conductive block; 9. a return spring; 10. an insulating base; 11. a telescopic air pipe; 12. connecting an air pipe; 13. an air inlet pipe; 14. a one-way valve; 15. discharging the air pipe; 16. a sealing cover; 17. a mounting seat; 18. installing a bolt; 19. a threaded joint; 20. a heat dissipating fin; 21. a heat dissipation frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

The invention provides the technical scheme that: as shown in fig. 2, in this embodiment, an arc-preventing safety type photovoltaic transformer includes a transformer body 1, a terminal 2 is installed on the transformer body 1, an iron core 4 is installed inside the transformer body 1, a winding 3 is arranged on the iron core 4, an arc-preventing mechanism 5 is arranged between the winding 3 and the terminal 2, a large amount of gas is generated inside when an arc occurs, the gas enters the arc-preventing mechanism 5, and the arc-preventing mechanism 5 triggers to disconnect the connection between the terminal 2 and the winding 3, so that a good arc-preventing effect can be achieved, and the safety is effectively improved.

As shown in fig. 2 and 3, the arc prevention mechanism 5 comprises a protective casing 6, two sets of telescopic rods 7 are fixedly connected inside the protective casing 6, the end parts of the two sets of telescopic rods 7 are fixedly connected with movable conductive blocks 8, the binding post 2 is connected with one movable conductive block 8, the winding 3 is connected with the other movable conductive block 8, a reset spring 9 is sleeved on the telescopic rod 7, so that the two movable conductive blocks 8 can be tightly attached to each other, thereby achieving a good conductive effect, an insulating seat 10 is fixedly connected on the surface of one side of each of the two movable conductive blocks 8 opposite to each other, thereby achieving a good insulating effect, a telescopic air pipe 11 is fixedly connected on the insulating seat 10, a connecting air pipe 12 is fixedly connected between a plurality of telescopic air pipes 11, and the insulating seats 10 on the two movable conductive blocks 8 are connected through the telescopic air pipes 11, the plurality of the telescopic air pipes 11 are communicated with each other through the connecting air pipe 12, one end of the connecting air pipe 12 is connected with the air inlet pipe 13, the one-way valve 14 is installed inside the air inlet pipe 13, so that air can enter the air inlet pipe 13 without backflow, meanwhile, air with dust enters the inside of the transformer body 1, one end of the connecting air pipe 12, which is far away from the air inlet pipe 13, is fixedly connected with the air discharge pipe 15, one end of the air inlet pipe 13 is communicated with the inside of the transformer body 1, the air discharge pipe 15 penetrates through the protective shell 6 and is communicated with the outside, the air discharge pipe 15 is in threaded connection with the sealing cover 16, when electric arcs occur in the transformer body 1, a large amount of air is generated inside the transformer body 1, the air enters the connecting air pipe 12 through the air inlet pipe 13 and then inflates the plurality of the telescopic air pipes 11, and the telescopic air pipes 11 are extended to push the insulating base 10 to move after ventilation, the insulating seat 10 moves to drive the two movable conductive blocks 8 to be separated and disconnected, so that the connection between the winding 3 and the wiring terminal 2 can be disconnected, a good arc-proof effect is achieved, and the safety is effectively improved.

As shown in fig. 4, protective housing 6 is made by insulating material, can effectively prevent the electric leakage, plays fine guard action to inside activity conducting block 8, fixedly connected with mount pad 17 on protective housing 6, be equipped with construction bolt 18 on the mount pad 17, can conveniently dismantle and install protective housing 6, conveniently overhaul, all be equipped with screwed joint 19 on connecting trachea 12 and the intake pipe 13, be connected through screwed joint 19 between connecting trachea 12 and the intake pipe 13, can conveniently be connected connecting trachea 12 and intake pipe 13 and demolish.

As shown in fig. 1, a plurality of heat dissipation fins 20 are fixedly connected to the surface of the transformer body 1, a plurality of heat dissipation frames 21 are fixedly mounted at the end portions of the heat dissipation fins 20, and heat dissipation fans are mounted inside the heat dissipation frames 21, so that the transformer body 1 can be well cooled by the heat dissipation fins 20, and the heat dissipation fans can promote air flow around the heat dissipation fins 20, thereby effectively improving the heat dissipation effect.

The invention provides an arc-proof safety photovoltaic transformer, which has the following specific working principle:

when the invention is used practically, electric arc is generated inside the transformer body 1, a large amount of gas is generated inside the transformer body, the gas enters the connecting gas pipe 12 from the gas inlet pipe 13, the connecting gas pipe 12 inflates the plurality of telescopic gas pipes 11, the telescopic gas pipes 11 are extended after being ventilated to push the insulating base 10 to move, the insulating base 10 moves to drive the two movable conductive blocks 8 to be separated and disconnected, so that the connection between the winding 3 and the wiring terminal 2 can be disconnected, a good electric arc prevention effect is achieved, the safety is effectively improved, the sealing cover 16 can be opened for deflation after maintenance, and the movable conductive blocks 8 are reconnected by using the reset spring 9 to form a passage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-arc safety type photovoltaic formula transformer, includes transformer body (1), its characterized in that: the transformer comprises a transformer body (1), a wiring terminal (2) is installed on the transformer body (1), an iron core (4) is installed inside the transformer body (1), a winding (3) is arranged on the iron core (4), and an arc prevention mechanism (5) is arranged between the winding (3) and the wiring terminal (2);

the arc prevention mechanism (5) comprises a protective shell (6), two groups of telescopic rods (7) are fixedly connected in the protective shell (6), the end parts of the two groups of telescopic rods (7) are fixedly connected with movable conductive blocks (8), the telescopic rod (7) is sleeved with a return spring (9), the surfaces of the opposite sides of the two movable conductive blocks (8) are fixedly connected with insulating seats (10), the insulating seat (10) is fixedly connected with a telescopic air pipe (11), a plurality of connecting air pipes (12) are fixedly connected among the telescopic air pipes (11), one end of the connecting air pipe (12) is connected with an air inlet pipe (13), a one-way valve (14) is arranged in the air inlet pipe (13), one end of the connecting air pipe (12) far away from the air inlet pipe (13) is fixedly connected with an air discharging pipe (15), and a sealing cover (16) is in threaded connection with the air discharging pipe (15).

2. The arc-resistant safety photovoltaic transformer of claim 1, wherein: the binding post (2) is connected with one movable conductive block (8), and the winding (3) is connected with the other movable conductive block (8).

3. The arc-resistant safety photovoltaic transformer of claim 1, wherein: the insulating seats (10) on the two movable conducting blocks (8) are connected through telescopic air pipes (11), and the telescopic air pipes (11) are communicated through connecting air pipes (12).

4. The arc-resistant safety photovoltaic transformer of claim 1, wherein: one end of the air inlet pipe (13) is communicated with the interior of the transformer body (1), and the air discharge pipe (15) penetrates through the protective shell (6) and is communicated with the outside.

5. The arc-resistant safety photovoltaic transformer of claim 1, wherein: the protective shell (6) is made of an insulating material, a mounting seat (17) is fixedly connected to the protective shell (6), and a mounting bolt (18) is arranged on the mounting seat (17).

6. The arc-resistant safety photovoltaic transformer of claim 1, wherein: all be equipped with screwed joint (19) on connecting trachea (12) and intake pipe (13), be connected through screwed joint (19) between connecting trachea (12) and intake pipe (13).

7. The arc-resistant safety photovoltaic transformer of claim 1, wherein: the transformer body (1) fixed surface is connected with a plurality of radiating fins (20), and is a plurality of radiating fin (20) tip fixed mounting has heat dissipation frame (21), heat dissipation frame (21) internally mounted has radiator fan.