CN211045184U - Current transformer - Google Patents

Abstract

The utility model discloses a current transformer, including the heat dissipation shell, the equal fixedly connected with hangers in left side of heat dissipation shell, the top fixedly connected with current transformer body of heat dissipation shell inner wall, the top electricity of current transformer body is connected with the terminal, the inside packing of bottom fixedly connected with of current transformer body has the heat-conducting layer of heat conduction silicone grease, the inside embedding of heat-conducting layer is connected with a plurality of heat conduction post, the surface of heat conduction post is rotated through the bearing and is connected with radiator unit, the bottom fixedly connected with radiator fan of the inner wall of heat dissipation shell. The utility model discloses an above-mentioned isotructure's cooperation has realized that radiator fan rotates the convection velocity who has accelerated air in the heat dissipation shell and outside air, and radiator fan rotates simultaneously, can blow radiating vane and drive the heat dissipation post and rotate for the air flow of heat-conducting layer below has further improved the radiating effect.

Description

Current transformer

Technical Field

The utility model relates to a current transformer technical field specifically is a current transformer.

Background

The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. Therefore, all current of a line always flows through the current transformer, the number of turns of the secondary winding is large, the secondary winding is connected in series in the measuring instrument and the protection loop, and a secondary side loop of the current transformer is always closed when the current transformer works, so that the impedance of a series coil of the measuring instrument and the protection loop is small, and the working state of the current transformer is close to a short circuit. The current transformer converts a large current into a secondary small current for measurement.

For example, chinese patent publication No. CN205692686U discloses a current transformer, in which a casing of the transformer is formed by joining an upper casing and a lower casing, the lower casing is provided with three secondary outgoing line terminals, the upper casing and the lower casing are respectively provided with two primary cable holes for a primary cable to pass through, two secondary coils are provided in the casing, one secondary outgoing line of one secondary coil is connected to a first secondary outgoing line terminal of the lower casing, the other outgoing line is connected to a third secondary outgoing line terminal of the lower casing, one outgoing line of the other secondary coil is connected to a second secondary outgoing line terminal of the lower casing, and the other outgoing line is connected to a third secondary outgoing line terminal of the lower casing. The utility model relates to a current transformer.

Because this current transformer does not set up heat radiation structure for the heat that current transformer surface produced is difficult to timely dispel after long-time the use, leads to the temperature on current transformer body surface too high easily, and causes the harm to internal device, influences current transformer's normal use, consequently needs to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a current transformer, possess the setting of heat-conducting layer, radiator unit, fresh air inlet and exhaust vent for the radiating effect of current transformer body is better, and radiator fan rotates the convection velocity who has accelerated the air in the heat dissipation shell and outside air, and radiator fan rotates simultaneously, can blow radiating vane and drive the heat dissipation post and rotate, has accelerated the air flow of heat-conducting layer below, has further improved the advantage of radiating effect, has solved the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a current transformer, includes the heat dissipation shell, the equal fixedly connected with hangers of the left and right sides of heat dissipation shell, the top fixedly connected with current transformer body of heat dissipation shell inner wall, the top electricity of current transformer body is connected with the terminal, the inside heat-conducting layer that has heat conduction silicone grease that fills of the bottom fixedly connected with of current transformer body, the inside embedding of heat-conducting layer is connected with a plurality of heat conduction post, the surface of heat conduction post is rotated through the bearing and is connected with radiator unit, the bottom fixedly connected with radiator fan of the inner wall of heat dissipation shell, the fresh air inlet has been seted up to the bottom of heat dissipation shell, the exhaust vent has all been seted up to the bottom of the left and right sides that is.

Preferably, still include temperature sensor and controller, temperature sensor fixed connection is on the lower surface of heat-conducting layer, controller fixed connection is on the left side of heat dissipation shell inner wall, temperature sensor's output and the input signal connection of controller, the output and the radiator fan signal connection of controller.

Preferably, the left side and the right side of the heat dissipation shell close to the top of the heat dissipation shell are fixedly connected with heat dissipation fins, and the heat dissipation fins are serrated.

Preferably, the heat dissipation assembly comprises a heat dissipation column, the heat dissipation column is rotatably connected to the surface of the heat conduction column through a bearing, and the circumferential surface of the heat dissipation column is fixedly connected with heat dissipation blades.

Preferably, the number of the heat radiation fans is three, the three heat radiation fans are distributed on the bottom of the inner wall of the heat radiation shell at equal intervals, and filter screens are connected to the air inlet and the air outlet in a specified mode.

Compared with the prior art, the beneficial effects of the utility model are that: the heat that the current transformer body produced is transmitted to the heat conduction post in through the heat-conducting layer, accelerate the dissipation of heat in the heat conduction post through heat dissipation post and radiator vane, simultaneously when the temperature on current transformer body surface is too high, the heat is transmitted to on the heat-conducting layer, temperature sensor reacts, temperature sensor sends a signal to the controller, controller control radiator fan starts, radiator fan rotates the convection velocity who has accelerated air and outside air in the heat dissipation shell, radiator fan rotates simultaneously, can blow radiator vane and drive the heat dissipation post and rotate, the flow of air has been accelerated, thereby the radiating effect has further been improved.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a front cross-sectional view of the present invention;

fig. 3 is an enlarged view of the structure of the present invention at a.

In the figure: the current transformer comprises a heat dissipation shell 1, a current transformer body 2, a binding post 3, a heat conduction layer 4, a heat conduction column 5, a heat dissipation fan 6, a vent hole 7, a temperature sensor 8, a controller 9, a heat dissipation fin 10, a heat dissipation column 11, a heat dissipation blade 12, a filter screen 13 and a hanging lug 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a current transformer, includes heat dissipation shell 1, the equal fixedly connected with hangers 14 of the left and right sides of heat dissipation shell 1, the top fixedly connected with current transformer body 2 of the 1 inner wall of heat dissipation shell.

Further, still include temperature sensor 8 and controller 9, temperature sensor 8 fixed connection is on the lower surface of heat-conducting layer 4, controller 9 fixed connection is on the left side of 1 inner wall of heat dissipation shell, temperature sensor 8's output and controller 9's input signal connection, controller 9's output and 6 signal connection of radiator fan, when the temperature on 2 surfaces of current transformer body is too high, heat transfer is to heat-conducting layer 4 on, temperature sensor 8 reacts, temperature sensor 8 sends a signal to controller 9, controller 9 controls radiator fan 6 and starts.

Furthermore, the left side and the right side of the heat dissipation shell 1 close to the top of the heat dissipation shell are fixedly connected with the heat dissipation fins 10, the heat dissipation fins 10 are zigzag, the contact area between the heat dissipation shell 1 and the outside air is increased through the heat dissipation fins 10, and dissipation of the surface heat of the heat dissipation shell 1 is accelerated.

The top electricity of current transformer body 2 is connected with terminal 3, the inside heat-conducting layer 4 that has heat conduction silicone grease that fills of bottom fixedly connected with of current transformer body 2, the inside embedding of heat-conducting layer 4 is connected with a plurality of heat conduction post 5, the surface of heat conduction post 5 is rotated through the bearing and is connected with radiator unit, the heat that current transformer body 2 produced is transmitted in heat conduction post 5 through heat-conducting layer 4, accelerate the dissipation of heat in the heat conduction post 5 through heat dissipation post 11 and radiating fin 12, ventilation hole 7 makes the inside and outside air of heat dissipation shell 1 form the convection current, radiator fan 6 rotates the convection velocity of air and the outside air that has accelerated in the heat dissipation shell 1, accelerate the radiating effect.

Further, the heat dissipation assembly comprises a heat dissipation column 11, the heat dissipation column 11 is connected to the surface of the heat conduction column 5 through a bearing in a rotating mode, the circumferential surface of the heat dissipation column 11 is fixedly connected with heat dissipation blades 12, the convection speed of air and outside air in the heat dissipation shell 1 is accelerated through the rotation of the heat dissipation fan 6, meanwhile, the heat dissipation fan 6 rotates, the heat dissipation blades 12 can be blown to drive the heat dissipation column 11 to rotate, the flowing of the air is accelerated, the heat dissipation effect is further improved, and the heat dissipation column 5, the heat dissipation column 11 and the heat dissipation blades 12 are made of copper materials or aluminum materials with good heat dissipation performance.

The bottom fixedly connected with radiator fan 6 of the inner wall of heat dissipation shell 1, the bottom of the left and right sides that is close to its bottom on heat dissipation shell 1 has all seted up ventilation hole 7.

Further, radiator fan 6's quantity is three, and quantity is the equidistant distribution of three radiator fan 6 on the bottom of radiating shell 1 inner wall, and the inner wall fixedly connected with filter screen 13 of ventilation hole 7, filter screen 13 have then effectively avoided external dust to get into radiating shell 1 in, through the setting of three radiator fan 6 for can blow the scope more extensive, can blow radiating column 11 and rotate, accelerate the flow of air.

The working principle is as follows: when the current transformer is used, heat generated by a current transformer body 2 is transmitted into a heat conduction column 5 through a heat conduction layer 4, the dissipation of the heat in the heat conduction column 5 is accelerated through a heat dissipation column 11 and heat dissipation blades 12, air inside and outside a heat dissipation shell 1 forms convection through ventilation holes 7, the convection speed of the air in the heat dissipation shell 1 and outside air is accelerated through the rotation of a heat dissipation fan 6, the heat dissipation effect is accelerated, external dust is effectively prevented from entering the heat dissipation shell 1 through a filter screen 13, meanwhile, when the temperature of the surface of the current transformer body 2 is overhigh, the heat is transmitted to the heat conduction layer 4, a temperature sensor 8 reacts, the temperature sensor 8 sends a signal to a controller 9, the controller 9 controls the heat dissipation fan 6 to be started, the convection speed of the air in the heat dissipation shell 1 and the outside air is accelerated through the rotation of the heat dissipation fan 6, and the heat dissipation blades 12 are blown to drive the heat, the air flow is accelerated, and the heat dissipation effect is further improved.

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 (5)

1. The utility model provides a current transformer, includes heat dissipation shell (1), the equal fixedly connected with hangers (14) of the left and right sides of heat dissipation shell (1), its characterized in that: the heat dissipation shell (1) is characterized in that the top fixedly connected with current transformer body (2) of the inner wall of the heat dissipation shell (1), the top electric connection of the current transformer body (2) is provided with a binding post (3), the inside of the bottom fixedly connected with of the current transformer body (2) is filled with a heat conduction layer (4) of heat conduction silicone grease, the inside of the heat conduction layer (4) is embedded and connected with a plurality of heat conduction columns (5), the surface of each heat conduction column (5) is connected with a heat dissipation assembly in a rotating mode through a bearing, the bottom fixedly connected with heat dissipation fan (6) of the inner wall of the heat dissipation shell (1), and the bottom of the left side and the bottom of the heat dissipation.

2. A current transformer according to claim 1, wherein: still include temperature sensor (8) and controller (9), temperature sensor (8) fixed connection is on the lower surface of heat-conducting layer (4), controller (9) fixed connection is on the left side of radiating shell (1) inner wall, the output of temperature sensor (8) and the input signal connection of controller (9), the output and the radiator fan (6) signal connection of controller (9).

3. A current transformer according to claim 1, wherein: the left side and the right side of the heat dissipation shell (1) close to the top of the heat dissipation shell are fixedly connected with heat dissipation fins (10), and the heat dissipation fins (10) are zigzag.

4. A current transformer according to claim 1, wherein: the heat dissipation assembly comprises a heat dissipation column (11), the heat dissipation column (11) is rotatably connected to the surface of the heat conduction column (5) through a bearing, and heat dissipation blades (12) are fixedly connected to the circumferential surface of the heat dissipation column (11).

5. A current transformer according to claim 1, wherein: the quantity of radiator fan (6) is three, and quantity is equidistant distribution of three radiator fan (6) on the bottom of radiating shell (1) inner wall, the inner wall fixedly connected with filter screen (13) of ventilation hole (7).

Images