CN203562759U - Leakage inductance protection structure of distribution transformer - Google Patents

Abstract

The utility model provides a leakage inductance protection structure of a distribution transformer, which includes a distribution transformer, a communication antenna, a display screen, a main power switch, a power line, a casing, a leakage induction circuit and an alarm component; the communication antenna is arranged on the distribution transformer The top of the top; the display screen, main power switch and alarm components are embedded in the front end of the distribution transformer, one end of the power cord passes through the distribution transformer and is connected to the main power switch, and the other end of the power cord is connected to an external power supply; the housing is set on the distribution transformer Inside, the leakage sensing circuit includes multiple leakage sensing pins, current amplifiers, voltage divider resistors, electromagnets and sensing magnets; multiple leakage sensing pins are evenly distributed on the housing, and one end of the current amplifier, voltage dividing resistors and electromagnets is located on the housing. In the body, the induction magnet is arranged on one side of the electromagnet, and the induction magnet is connected with the main power switch. The utility model can quickly detect whether the distribution transformer is leaking, can prompt externally, and can prevent the distribution transformer itself from being electrified.

Description

Leakage Inductance Protection Structure of Distribution Transformer

technical field

The utility model relates to a distribution transformer auxiliary equipment, in particular to a leakage inductance protection structure of a distribution transformer.

Background technique

Distribution transformer is a kind of static electrical equipment used in power distribution system to transform AC voltage and current according to the law of electromagnetic induction and transmit AC power. Once a distribution transformer leaks, it will cause personal injury such as electric shock. If it is not found in time, will lead to unpredictable consequences.

Utility model content

In view of the defects and various deficiencies of the prior art described above, the technical problem to be solved by the utility model is to provide a leakage inductance protection structure of a distribution transformer, which can quickly detect whether the distribution transformer is leaking.

In order to achieve the above purpose, the utility model provides a leakage inductance protection structure of a distribution transformer, including a distribution transformer, a communication antenna, a display screen, a main power switch, a power cord, a casing, a leakage induction circuit and an alarm assembly; The communication antenna is set on the top of the distribution transformer; the display screen, the main power switch and the alarm component are respectively embedded in the front end of the distribution transformer, and the display screen and the leakage induction circuit connection, one end of the power cord passes through the distribution transformer and is connected to the main power switch, and the other end of the power cord is connected to an external power supply; the housing is set on the distribution transformer Inside, the leakage sensing circuit includes a plurality of leakage sensing pins, a current amplifier, a voltage dividing resistor, an electromagnet and a sensing magnet; the plurality of leakage sensing pins are evenly distributed on the housing, and the current The amplifier, the voltage dividing resistor and one end of the electromagnet are located in the housing, the plurality of leakage sensing pins are respectively connected to the input terminals of the current amplifier, and the output terminals of the current amplifier are connected to the alarm component connection, the alarm component is connected to one end of the voltage dividing resistor, and the other end of the voltage dividing resistor bypasses the electromagnet and is connected to the plurality of leakage sensing pins, and the sensing The magnet is arranged on one side of the electromagnet, and the induction magnet is connected with the main power switch.

Preferably, the alarm component includes a warning light and a buzzer.

Further, an insulating layer is provided on the inner wall of the distribution transformer.

Preferably, a drain pin is provided at the bottom of the side wall of the distribution transformer, and the drain pin is grounded.

The leakage inductance protection structure of the distribution transformer involved in the utility model has the following beneficial effects:

The utility model can quickly detect whether the distribution transformer is leaking, the detection result is accurate, the response is sensitive, and it can prompt the outside through the sound, the lamp tube and the communication antenna to prevent personal injury and prevent the distribution transformer itself from being charged.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the patent is described below with preferred embodiments of the utility model and accompanying drawings. Detailed description.

Description of drawings

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

FIG. 2 is an internal structural diagram of FIG. 1 .

Component designation description

1 distribution transformer

2 communication antenna

3 display

4 main power switch

5 power cord

6 shell

7 Leakage sensor pin

8 current amplifier

9 Voltage divider resistor

10 energized electromagnets

11 induction magnet

12 warning lights

13 buzzer

14 insulation layer

15 drainage needle

Detailed ways

Preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, the utility model provides a leakage inductance protection structure of a distribution transformer, including a distribution transformer 1, a communication antenna 2, a display screen 3, a main power switch 4, a power cord 5, and a housing 6 , leakage sensing circuit and alarm assembly; the communication antenna 2 is arranged on the top of the distribution transformer 1, and is used for communicating with the outside world during an alarm; the display screen 3, the main power switch 4 and the alarm assembly are respectively Embedded in the front end of the distribution transformer 1, the display screen 3 is connected to the leakage induction circuit, the display screen 3 is used to display leakage information, and one end of the power line 5 passes through the distribution The electric transformer 1 is connected to the main power switch 4, and the other end of the power line 5 is connected to an external power supply; the casing 6 is arranged in the distribution transformer 1, and the leakage induction circuit includes multiple A leakage sensing needle 7, a current amplifier 8, a voltage dividing resistor 9, an electromagnet 10 and an induction magnet 11; the plurality of leakage sensing needles 7 are evenly distributed on the housing 6 for inductive distribution transformer 1 Whether there is leakage, one end of the current amplifier 8, the voltage dividing resistor 9 and the electromagnet 10 is located in the housing 6, and the plurality of leakage sensing pins 7 are respectively connected to the input terminals of the current amplifier 8 , the output end of the current amplifier 8 is connected to the alarm component, the alarm component is connected to one end of the voltage dividing resistor 9, and the other end of the voltage dividing resistor 9 bypasses the The electromagnet 10 is connected with the plurality of leakage induction pins 7, the induction magnet 11 is arranged on one side of the electromagnet 10, and the induction magnet 11 is connected with the main power switch 4, when When the leakage current is sensed by the leakage induction needle 7, it is amplified by the current amplifier 8, and the alarm component starts an alarm. After the magnetic field is generated around the electromagnet 10, it generates an attraction force to the induction magnet 11, so that it is disconnected from the main power switch 4 to achieve power-off. Purpose.

Preferably, the alarm component includes a warning light 12 and a buzzer 13, which can play the role of sound and light prompting at the same time.

Further, the inner wall of the distribution transformer 1 is provided with an insulating layer 14, which can prevent accidents of electric shock when inadvertently touched.

Preferably, the bottom of the side wall of the distribution transformer 1 is provided with a drain pin 15, and the drain pin 15 is grounded, which can effectively prevent the distribution transformer 1 from being electrified.

To sum up, the utility model can quickly detect whether the distribution transformer is leaking, the detection result is accurate, the response is sensitive, and it can prompt the outside through the sound, the lamp tube and the communication antenna, so as to prevent personal injury and prevent the distribution transformer from being damaged. Charge itself. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.

The leakage inductance protection structure of a distribution transformer provided by the embodiment of the utility model has been introduced in detail above. For those of ordinary skill in the art, according to the idea of the embodiment of the utility model, both the specific implementation method and the scope of application There will be changes. In summary, the content of this specification should not be understood as a limitation to the utility model, and any changes made according to the design concept of the utility model are within the protection scope of the utility model.

Claims (4)

1. A leakage inductance protection structure of a distribution transformer, characterized in that: it comprises a distribution transformer, a communication antenna, a display screen, a main power switch, a power cord, a casing, a leakage induction circuit and an alarm assembly; the communication antenna It is arranged on the top of the distribution transformer; the display screen, the main power switch and the alarm component are respectively embedded in the front end of the distribution transformer, and the display screen is connected to the leakage induction circuit, and the One end of the power cord passes through the distribution transformer and is connected to the main power switch, and the other end of the power cord is connected to an external power supply; the housing is arranged in the distribution transformer, and the The leakage sensing circuit includes multiple leakage sensing pins, current amplifiers, voltage divider resistors, electromagnets and induction magnets; the multiple leakage sensing pins are evenly distributed on the housing, and the current amplifier, splitter One end of the piezoresistor and the electromagnet is located in the housing, the multiple leakage sensing pins are respectively connected to the input ends of the current amplifiers, and the output ends of the current amplifiers are connected to the alarm components, The alarm component is connected to one end of the voltage dividing resistor, and the other end of the voltage dividing resistor is connected to the plurality of leakage sensing pins by bypassing the electromagnet, and the sensing magnet is set at One side of the electromagnet, the induction magnet is connected with the main power switch. 2 . The leakage inductance protection structure of a distribution transformer according to claim 1 , wherein the alarm component includes a warning light and a buzzer. 3 . 3. The leakage inductance protection structure of a distribution transformer according to claim 1, characterized in that: an insulating layer is provided on the inner wall of the distribution transformer. 4. The leakage inductance protection structure of a distribution transformer according to claim 1, characterized in that: a drain pin is provided at the bottom of the side wall of the distribution transformer, and the drain pin is grounded.

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