CN216016432U

CN216016432U - Automatic switch-on controller

Info

Publication number: CN216016432U
Application number: CN202122382221.8U
Authority: CN
Inventors: 肖立强
Original assignee: Shaanxi Tujin Power Equipment Co ltd
Current assignee: Shaanxi Tujin Power Equipment Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-03-11
Anticipated expiration: 2031-09-29

Abstract

The utility model provides an automatic switching-on controller, which comprises a casing, wherein the casing comprises a sealed shell and a switching door arranged on the shell, a circuit breaker body is arranged in the casing, a switching-on button is externally connected with the circuit breaker body, and the switching-on button is arranged outside the switching door; the lower opening of the circuit breaker body is also provided with a three-phase voltage sensor, and the three-phase voltage sensor collects voltage signals and is connected with the single chip microcomputer; the single chip microcomputer is also connected with a relay, the relay is provided with an output dry contact, and the dry contact is connected to two ends of a breaker closing button on a switch door of the shell in parallel; the automatic switching-on controller can automatically judge whether the low-voltage side of the transformer is electrified or not, can automatically detect whether a generator reversely transmits power or not at the lower port of the circuit breaker, can arbitrarily set automatic switching-on waiting time by setting delay time, can quickly recover power supply, and can avoid short circuit caused by manual operation to the reverse power transmission negligence of the lower port.

Description

Automatic switch-on controller

Technical Field

The utility model relates to a power supply technical field, especially an automatic closing controller.

Background

The conventional circuit breaker of present electric wire netting terminal configuration all has decompression dropout function and other protection tripping operation functions, no automatic combined floodgate function, when high-tension line trouble or maintenance have a power failure, no voltage in transformer both sides, low pressure side main circuit breaker decompression tripping operation, need resume the power supply after the electric wire netting is called for again or the trouble is eliminated, low pressure main circuit breaker needs artifical combined floodgate, especially residential quarter power consumption, to power supply bureau, it is extensive to relate to the region, every district power transmission combined floodgate need invest a large amount of manpowers and time, it is slow to resume the power supply, customer experience is felt badly, complain many, in order to solve this pain point problem of quick recovery power supply, it reduces the maloperation incident and takes place to need an automatic combined floodgate controller urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic switching-on controller, to prior art's shortcoming, this automatic switching-on controller can judge automatically whether electrified transformer low pressure side, whether can the automated inspection circuit breaker end opening have the power generation machine to send electricity backward, through setting delay time, can set for automatic combined floodgate latency wantonly, not only can the quick recovery power supply, can also avoid the manual operation to the short circuit that end opening is to the power transmission negligence and cause, especially operate at night or rainy day, can also avoid the emergence of incident.

For solving the technical problem, the utility model discloses the technical scheme who adopts as follows: an automatic switching-on controller comprises a shell, wherein the shell comprises a sealed shell and a switching door arranged on the shell, a circuit breaker body is arranged in the shell, a switching-on button is externally connected with the circuit breaker body, and the switching-on button is arranged on the outer side of the switching door; the lower opening of the circuit breaker body is also provided with a three-phase voltage sensor, and the three-phase voltage sensor collects voltage signals and is connected with the single chip microcomputer; the single chip microcomputer is also connected with a relay, the relay is provided with an output dry contact, and the dry contact is connected to two ends of a breaker closing button on a switch door of the shell in parallel; the circuit breaker body still includes control circuit, control circuit includes power supply unit, voltage detection unit and signal output unit, power supply unit, voltage detection unit and signal output unit all with single-chip microcomputer line connection.

The improvement of the automatic switching-on controller is that the power supply unit comprises a PWM power supply chip, an input side rectifying and filtering circuit, a switching capacitor circuit, an overload protection circuit and a low-voltage rectifying and filtering circuit, wherein 220V of alternating current is converted into 24V of direct current, and a more stable power supply is provided for the relay.

The improvement of the automatic switching-on controller is that the voltage detection unit comprises three-phase voltage sensors DY1, DY2, DY3 and integrated amplifiers IC4, IC5 and IC6, wherein the three-phase voltage sensors DY1, DY2 and DY3 convert strong voltage into weak voltage signals respectively, and the weak voltage signals are input into the single chip microcomputer for data processing through the integrated amplifiers IC4, IC5 and IC 6.

The improvement of the automatic switching-on controller is that the signal output unit comprises a relay and a switching-on coil, the relay is connected with two ends of the switching-on coil in parallel, and the single chip microcomputer drives the relay to be closed by the output signal and drives the circuit breaker to be automatically switched on.

The improvement of the automatic closing controller is that the single chip microcomputer adopts an STC8H single chip microcomputer.

The improvement of the automatic switching-on controller is that the relay output dry contact is also connected with a light alarm or a buzzer.

Owing to adopted above-mentioned technical scheme, the utility model discloses the technological progress who gains as follows: the automatic switching-on controller can automatically judge whether the low-voltage side of the transformer is electrified or not, can automatically detect whether a generator reversely transmits power or not at the lower port of the circuit breaker, can randomly set automatic switching-on waiting time by setting delay time, not only can quickly recover power supply, but also can avoid short circuit caused by manual operation to the reverse power transmission negligence at the lower port, particularly operate at night or in rainy days, and can also avoid safety accidents.

Drawings

Fig. 1 is a schematic diagram of an automatic switching-on controller of the present invention;

FIG. 2 is a schematic block diagram of a power supply unit of the present invention;

FIG. 3 is a schematic block diagram of a voltage detecting unit of the present invention;

fig. 4 is a schematic block diagram of a signal output unit of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

An automatic switching-on controller comprises a shell 1, wherein the shell 1 comprises a sealed shell 2 and a switching door 3 arranged on the shell, a circuit breaker body 4 is arranged in the shell, a switching-on button 5 is externally connected with the circuit breaker body 4, and the switching-on button is arranged on the outer side of the switching door; the lower opening of the circuit breaker body is also provided with a three-phase voltage sensor 6, and the three-phase voltage sensor collects voltage signals and is connected with the single chip microcomputer; the single chip microcomputer is also connected with a relay, the relay is provided with an output dry contact, and the dry contact is connected to two ends of a breaker closing button on a switch door of the shell in parallel; the circuit breaker body still includes control circuit, control circuit includes power supply unit, voltage detection unit and signal output unit, power supply unit, voltage detection unit and signal output unit all with single-chip microcomputer line connection.

The power supply unit comprises a PWM power supply chip, an input side rectifying and filtering circuit, a switching capacitor circuit, an overload protection circuit and a low-voltage rectifying and filtering circuit, wherein alternating current 220V is converted into direct current 24V, and a more stable power supply is provided for the relay.

The voltage detection unit comprises three-phase voltage sensors DY1, DY2, DY3, integrated amplifiers IC4, IC5 and IC6, wherein the three-phase voltage sensors DY1, DY2 and DY3 convert three-phase voltages from strong current signals into weak current signals respectively, and the weak current signals are input into the single chip microcomputer for data processing through the integrated amplifiers IC4, IC5 and IC 6.

The signal output unit comprises a relay and a closing coil, the relay is connected to two ends of the closing coil in parallel, and the single chip microcomputer drives the relay to close in an attraction mode through the output signal and drives the circuit breaker to close automatically.

The single chip microcomputer is an STC8H single chip microcomputer.

And a light alarm or a buzzer is also connected to the relay output dry contact.

Description of automatic closing process: working power supply 220V AC, also gather the judgement power of circuit breaker suitable for reading for the device, it is electrified when transformer low pressure side winding, this device begins to work, gather circuit breaker suitable for reading three-phase voltage through three-phase voltage sensor, if the suitable for reading does not have the voltage, the passive dry contact of delay time drive 30A relay output through customer setting, with dry contact and the circuit breaker on the door plant close button both ends, the action of imitative artificial operating button, make the circuit breaker close a floodgate, after the circuit breaker closes a floodgate, the disconnection of relay dry contact, the action of closing a floodgate is accomplished, withdraw from.

During the operation of the circuit breaker, a three-phase voltage sensor is used for continuously acquiring operation voltage signals and tracking and judging a single chip microcomputer, once the detected voltage value is lower than a set value of a client, the system overvoltage is judged, the single chip microcomputer sends a command in a delayed mode, a dry contact is output through an intermediate relay, the client can insert the dry contact into alarm equipment such as lamplight and a buzzer according to the needs of the client, the dry contact can be arranged at two ends of a brake separating button of the circuit breaker to enable the circuit breaker to automatically trip, the measurement, the judgment and the relay suction disconnection of the voltage signals are carried out, the delay time is calculated and executed through the single chip microcomputer on a circuit board, an STC8H single chip processor is adopted to detect the voltage of the whole system, set the time, set the voltage value and comprehensively process action commands, and the reliable operation of the system is ensured.

A power supply unit: converting alternating current 220V into direct current 24V; the PWM power supply chip can realize the protection of overpower, overvoltage, temperature and output short circuit of a circuit, and provides a more stable power supply for a rear-end drive relay through the capacitor; and the DC24V is converted into 5V voltage required by the singlechip and the display screen again through a voltage reduction loop.

A voltage detection unit: before the system is started or in normal operation, the three-phase voltage is converted from a strong current signal into a weak current signal through three-phase voltage sensors DY1, DY2 and DY3, and then the weak current signals are input to a single chip microcomputer for data processing through an integrated amplifier IC4, an IC5 and an IC 6.

A signal output unit: closing detection unit: whether the incoming line end of the circuit breaker is electrified or not; and detecting whether the generator reversely supplies power at the outlet end of the circuit breaker, if the closing condition is met, outputting a signal by the singlechip to drive the relay to suck and output a closing contact.

After the feedback condition of the detection unit is met, closing time B (delay time is 1-999 seconds) which can be set is sucked through a settable delay time A (delay time is 1-999 seconds), and a dry contact is output through a 30A relay and is connected in parallel with two ends of a closing coil of the circuit breaker to drive the circuit breaker to automatically close; in the same way, if the voltage detection circuit detects that the system has overvoltage, undervoltage and phase failure, the single chip microcomputer outputs an alarm or trip signal by sending a signal to the driving relay to act.

Claims

1. An automatic switching-on controller comprises a shell, wherein the shell comprises a sealed shell and a switching door arranged on the shell, and is characterized in that a circuit breaker body is arranged in the shell, a switching-on button is externally connected with the circuit breaker body, and the switching-on button is arranged on the outer side of the switching door; the lower opening of the circuit breaker body is also provided with a three-phase voltage sensor, and the three-phase voltage sensor collects voltage signals and is connected with the single chip microcomputer; the single chip microcomputer is also connected with a relay, the relay is provided with an output dry contact, and the dry contact is connected to two ends of a breaker closing button on a switch door of the shell in parallel; the circuit breaker body still includes control circuit, control circuit includes power supply unit, voltage detection unit and signal output unit, power supply unit, voltage detection unit and signal output unit all with single-chip microcomputer line connection.

2. The automatic closing controller according to claim 1, wherein the power supply unit comprises a PWM power supply chip, an input side rectifying and filtering circuit, a switched capacitor circuit, an overload protection circuit and a low voltage rectifying and filtering circuit, which convert ac 220V into dc24V, so as to provide a more stable power supply for the relay.

3. The automatic switching-on controller of claim 1, wherein the voltage detection unit comprises three-phase voltage sensors DY1, DY2, DY3 and integrated amplifiers IC4, IC5 and IC6, and the three-phase voltage sensors DY1, DY2 and DY3 convert the three-phase voltage from a strong electric signal to a weak electric signal respectively and input the weak electric signal to the single chip microcomputer for data processing through the integrated amplifiers IC4, IC5 and IC 6.

4. The automatic switching-on controller according to claim 1, wherein the signal output unit comprises a relay and a switching-on coil, the relay is connected in parallel with two ends of the switching-on coil, and the single chip microcomputer drives the relay to be switched on by the output signal to drive the circuit breaker to be automatically switched on.

5. The automatic closing controller of claim 1, wherein the single chip microcomputer is an STC8H single chip microcomputer.

6. The automatic closing controller of claim 1, wherein the relay output dry contact is further connected with a light alarm or a buzzer.