CN210015761U - High-efficient heat dissipation type current transformer - Google Patents

Abstract

The utility model discloses a high-efficiency heat dissipation type current transformer. The iron core is fixedly installed in a casing through a support, the winding coil is wound on the outside of the iron core, and the insulating protective layer is wrapped around the iron core and the winding coil. On the outer side, a base is arranged at the bottom of the casing, the pair of terminals are fixedly installed on the base, the two ends of the winding coil are respectively electrically connected to the pair of terminals, and the cooling pipe is fixedly installed in the casing, The cooling pipe is spirally wound on the outside of the insulating protective layer, the two ends of the cooling pipe are respectively protruded from the casing, and one end of the cooling pipe is communicated with the water outlet of the water pump. The advantages of the utility model are: The cooling pipe is spirally wound on the outside of the insulating protective layer, thereby significantly increasing the heat exchange area, further improving the cooling effect, and providing a good working environment for the normal operation of the current transformer body.

Description

High-efficiency heat dissipation current transformer

technical field

The utility model relates to the technical field of electric power measuring instruments, in particular to the technical field of current transformers.

Background technique

A current transformer is an electrical device that converts a large primary current into a small secondary current through a certain transformation ratio based on the principle of electromagnetic induction for protection or measurement purposes. The current transformer is generally composed of closed iron. It consists of a core, a winding coil and a shell. When the current transformer is working, current flows in the winding coil of the secondary side, so it will generate a certain amount of heat to different degrees. The current transformer is usually fixedly installed in the power distribution cabinet, and the power distribution cabinet is ventilated at the same time. It is not smooth, and the winding coil and iron core of the current transformer are encapsulated inside the casing, so that the heat inside the current transformer cannot be discharged in time, which will adversely affect the normal and stable operation of the current transformer, and easily lead to the aging of the casing. Deformed, and even burnt in severe cases.

Utility model content

The purpose of the utility model is to solve the above shortcomings and provide a high-efficiency heat dissipation current transformer with simple structure, reasonable design, good heat dissipation and cooling effect, and can make up for the insufficient heat dissipation capacity of traditional current transformers.

The technical solutions adopted by the present invention in order to solve the above-mentioned technical problems are as follows:

The high-efficiency heat dissipation current transformer includes a current transformer body and a heat dissipation mechanism. The current transformer body includes a shell, an iron core, a winding coil, an insulating protective layer, a pair of terminals and a cooling pipe. The iron core is fixedly installed in the casing through the support, the winding coil is wound on the outside of the iron core, the insulating protective layer is wrapped around the iron core and the outside of the winding coil, and a base is arranged at the bottom of the casing. The terminal is fixedly installed on the base, and the two ends of the winding coil are respectively electrically connected with the paired terminal. The two ends respectively protrude from the casing. The heat dissipation mechanism includes a water pump, a liquid storage tank, a radiator and a fan. One end of the cooling pipe is communicated with the water outlet of the water pump. A water inlet and a first water outlet, the first water outlet of the liquid storage tank is communicated with the water inlet of the water pump, the fan is composed of a fan blade, a motor and a frame, the motor is fixed on the frame through a bracket, the The fan blade is fixedly installed on the output shaft of the motor, and the radiator is fixedly installed on the frame. The radiator is composed of a water inlet cavity, a water outlet cavity, a heat dissipation channel and fins, and is provided on the side wall of the water inlet cavity. There is a second water inlet, and a second water outlet is opened on the side wall of the water outlet cavity. The heat dissipation channels are fixedly installed between the water inlet chamber and the water outlet chamber in a row, and are respectively connected with the water inlet chamber and the water outlet chamber. The fins are fixedly installed between adjacent heat dissipation channels in a row, the first water inlet of the liquid storage tank is communicated with the second water outlet of the water outlet cavity, and the other end of the cooling pipe is connected to the water inlet cavity. connected to the second water inlet.

The casing is made of plastic material, the insulating protective layer is made of rubber material, and the iron core is made of silicon steel sheet material.

The beneficial effects that the utility model can achieve by adopting the above technical solutions are: when the high-efficiency heat-dissipating current transformer is in use, the heat-dissipating mechanism is installed outside the power distribution cabinet, and the cooling liquid in the liquid storage tank is pumped through the water pump to the In the cooling pipe, the inside of the shell is cooled, the cooling liquid after heat exchange enters the radiator, the cooling liquid flowing through the cooling channel of the radiator is radiated by air convection, and the cooled cooling liquid enters the liquid storage tank for circulating flow , which has a good cooling effect on the inside of the shell, and the cooling pipe is spirally wound on the outside of the insulating protective layer, thereby significantly increasing the heat exchange area, further improving the cooling effect, and ensuring the normal operation of the current transformer body. Provides a good working environment.

Description of drawings

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

Fig. 2 is the sectional structure schematic diagram of the current transformer body in Fig. 1;

FIG. 3 is a schematic structural diagram of a right side view of the heat sink in FIG. 1 .

Detailed ways

As shown in Figures 1 and 2, the high-efficiency heat dissipation current transformer includes a current transformer body and a heat dissipation mechanism. The current transformer body includes a casing 2, an iron core 3, a winding coil 4, and an insulating protective layer. 5. Pairs of terminals 6 and cooling pipes 1, the iron core 3 is fixedly installed in the casing 2 through the support 7, the iron core 3 is made of silicon steel sheet material, the casing 2 is made of plastic material, the winding coil 4 is wound on the outside of the iron core 3, and the insulating protective layer 5 is wrapped on the outside of the iron core 3 and the winding coil 4. The insulating protective layer 5 is made of rubber, and a base 8 is provided at the bottom of the casing 2. The paired The terminal 6 is fixedly installed on the base 8, the two ends of the winding coil 4 are respectively electrically connected with the paired terminal 6, the cooling pipe 1 is fixedly installed in the housing 2, and the cooling pipe 1 is spirally wound On the outside of the insulating protective layer 5 , both ends of the cooling pipe 1 protrude out of the casing 2 respectively. The heat dissipation mechanism includes a water pump 9 , a liquid storage tank 10 , a radiator and a fan. One end 12 of the cooling pipe 1 is communicated with the water outlet 13 of the water pump 9 , and the liquid storage tank 10 is provided with a first water inlet. 14 and the first water outlet 15, the first water outlet 15 of the liquid storage tank 10 is communicated with the water inlet 16 of the water pump 9, the fan is composed of a fan blade 17, a motor 18 and a frame 19, and the motor 18 passes through the bracket 20. It is fixedly installed on the frame 19, the fan blade 17 is fixedly installed on the output shaft 21 of the motor 18, and the radiator is fixedly installed on the frame 19. As shown in FIG. 3, the radiator consists of a water inlet cavity 22, a water outlet The cavity 23, the heat dissipation channel 24 and the fins 25 are formed. A second water inlet 26 is opened on the side wall of the water inlet cavity 22, and a second water outlet 27 is opened on the side wall of the water outlet cavity 23. The radiating channels 24 are fixedly installed between the water inlet cavity 22 and the water outlet cavity 23 in a row, and communicate with the water inlet cavity 22 and the water outlet cavity 23 respectively, and the fins 25 are fixedly installed in the adjacent radiating channels 24 in a row. In between, the first water inlet 14 of the liquid storage tank 10 communicates with the second water outlet 27 of the water outlet cavity 23 , and the other end 28 of the cooling pipe 1 communicates with the second water inlet 26 of the water inlet cavity 22 .

When the high-efficiency heat-dissipating current transformer is in use, the current transformer body is fixedly installed in the power distribution cabinet through the base 8 of the housing 2 , the heat dissipation mechanism is installed outside the power distribution cabinet, and the liquid storage tank 10 is installed through the water pump 9 . The cooling liquid is pumped into the cooling pipe 1 to cool the inside of the casing 2, the cooling liquid after heat exchange enters the radiator, and the cooling liquid flowing through the cooling channel 24 of the radiator is radiated by air convection through the fan. The cooling liquid enters the liquid storage tank 10 for circulating flow.

Claims (2)

1. High-efficient heat dissipation type current transformer, its characterized in that: the current transformer comprises a current transformer body and a heat dissipation mechanism, wherein the current transformer body comprises a shell, an iron core, a winding coil, an insulating protective layer, paired binding posts and a cooling pipe, the iron core is fixedly arranged in the shell through a support, the winding coil is wound outside the iron core, the insulating protective layer is wrapped outside the iron core and the winding coil, a base is arranged at the bottom of the shell, the paired binding posts are fixedly arranged on the base, two end parts of the winding coil are respectively and electrically connected with the paired binding posts, the cooling pipe is fixedly arranged in the shell, the cooling pipe is spirally wound outside the insulating protective layer, two end parts of the cooling pipe respectively penetrate out of the shell, the heat dissipation mechanism comprises a water pump, a liquid storage tank, a radiator and a fan, one end part of the cooling pipe is communicated with a water outlet of the water pump, and the liquid storage tank is provided, the first delivery port of liquid reserve tank is linked together with the water inlet of water pump, the fan comprises flabellum, motor and frame, the motor passes through support fixed mounting on the frame, flabellum fixed mounting is on the output shaft of motor, radiator fixed mounting is on the frame, and this radiator comprises intake antrum, play water cavity, heat dissipation channel and fin set up the second water inlet on the lateral wall of intake antrum set up the second delivery port on the lateral wall of play water cavity, heat dissipation channel is row fixed mounting between intake antrum and play water cavity to be linked together with intake antrum and play water cavity respectively, the fin is row fixed mounting between adjacent heat dissipation channel, the first water inlet of liquid reserve tank is linked together with the second delivery port of a water cavity, and another tip of cooling tube is linked together with the second water inlet of intake antrum.

2. The high efficiency heat dissipating current transformer of claim 1, wherein: the shell is made of plastic, the insulating protective layer is made of rubber, and the iron core is made of silicon steel sheets.

Images