KR100970892B1 - ELB trip alarm system for piping heating device - Google Patents

Abstract

The present invention is provided in the pipe freeze protection and temperature maintenance device (hereinafter referred to as "pipe heating device") to know that the ELB (Earth Circuit Breaker) tripped for various reasons, such as electrical reasons such as a short circuit and artificial operation of the breaker switch. The present invention relates to an ELB (leakage circuit breaker) trip alarm system for a pipe heating device, which is capable of quickly responding, and more particularly, an MG (electronic switch) that is connected to a power input terminal and controls power supply. Connected to an output terminal of the switch) and detecting at least one leakage circuit breaker on the load side, and connected to an output terminal of the MG (electronic circuit breaker) and at least one ELB (leakage circuit breaker), respectively. AC-DC converter converting to DC power, MG (electronic switch) converted by the AC-DC converter and at least one ELB A judgment control unit which extracts a DC voltage value or a DC current value from each DC power source and compares the values with each other, and an alarm lamp display unit indicating whether the ELB (earth leakage breaker) has been tripped by the control of the determination control unit. And an ELB trip LED display for informing the ELB (leakage circuit breaker) tripped by the control of the judgment control section, and a tripping of the ELB (leakage circuit breaker) and the tripped ELB (leakage circuit breaker) by the control of the judgment control section. A communication unit for sending a signal to a communication unit of a management operator of the device system, a DRY contact output unit for applying a voltage-free contact signal that does not apply a voltage signal under the control of the decision control unit, and a DC power supply for supplying power to the decision control unit. By including the supply part, the output side of the MG (electronic switchgear) to control the power input applied from the outside and the ELB (leakage circuit breaker) connected to each heating device By extracting the DC voltage value or DC current value from the controller, the value is calculated by the control unit, and the operator of the piping heating device system is notified of the ELB trip as an alarm signal, so that the operator responds quickly to the short-circuit situation. As a result, the present invention relates to an ELB trip alarm system for a piping heating device, which can prevent economic loss or human injury caused by not dealing with the situation occurring shortly after the short circuit is interrupted.

Piping heating device, ELB, earth leakage breaker, DC voltage value, DC current value, electronic switch

Description

ELB trip alarm system for piping heating device

The present invention provides an ELB tripping alarm system for a pipe heating device that promptly responds by informing that an ELB (leakage circuit breaker) has tripped due to various reasons such as electrical leakage and artificial operation of a breaker switch. In more detail, at least one or more MG (electronic switch) connected to the power input terminal to control whether the power supply is input, and at least one connected to the output terminal of the MG (electronic switch) to detect the occurrence of a short circuit break on the load side An AC-DC converter connected to an output terminal of an ELB (leakage circuit breaker), the MG (electronic switchgear) and at least one ELB (leakage circuit breaker) to convert AC power into DC power, and the AC-DC converter DC voltage value or DC current value is extracted from each DC power source of the MG (electromagnetic switch) and at least one ELB (leakage circuit breaker) converted by A judgment control unit comparing each other, an alarm lamp display unit indicating whether or not there is an ELB (leakage circuit breaker) tripped by the control of the judgment control unit, and an ELB trip indicating an ELB (leakage circuit breaker) tripped by the control of the judgment control unit. An LED display unit, a communication unit for signaling the tripping of the ELB (earth leakage breaker) and the tripped ELB (earth leakage breaker) by the control of the judgment control unit to the communication unit of the management operator of the pipe heating device, and the voltage under the control of the determination control unit. MG (electronic switch) for controlling the power input applied from the outside, comprising a DRY contact output unit for applying a voltage-free contact signal that does not apply a signal, and a DC power supply unit for supplying power to the determination control unit. The DC voltage value or DC current value is extracted from the output power of the ELB (Earth Leakage Circuit Breaker) connected to each heating device, and the value is calculated by the judgment controller. By alerting the thermal device operator to the ELB trip as an alarm signal, the operator can quickly respond effectively to the ELB trip situation (recovery of the piping heating device), and as a result, respond quickly to the event that occurs after the ELB trip occurs. The present invention relates to an ELB trip alarm system for a pipe heating device that can prevent economic loss or personal injury caused by not doing so.

For example, in order to prevent freezing and freezing of pipes due to fluid flowing inside various pipe pipes (for example, water pipes, etc.) that are exposed to the outdoors such as a parking lot or a roof during winter, old clothes outside the pipe Or wrap the insulation for insulation such as styrofoam.

In households, the faucet is slightly opened during the winter to keep water flowing out to prevent water from freezing.

Such freezing prevention method has a problem in that it is not possible to prevent the freezing of various pipe pipes exposed to the outdoors due to insufficient heat retention in cold weather when the temperature drops sharply, and causes waste that continuously drains tap water. All.

In order to solve this problem, a pipe freeze protection system has been established to provide a heating device to the pipe. The pipe freeze protection system is fixed to the outside surface of a pipe through a pipe through which fluid flows and a tie. Heating device for heating the pipe when power is supplied from the outside, and the heating device connected to the heating device according to the atmospheric temperature (for example, 5 ℃ or less) detected by a temperature sensor (installed inside the piping pipe) And a control unit for supplying power to prevent freezing of the pipe pipe, and a power plug for supplying power to the control unit from the outside.

In the heating device that is fixed to the outer surface of the piping pipe and heats the pipe, if the insulation of wiring or heating device is incomplete, and a short circuit occurs, electricity flows to a part of the body, causing an electric shock or overcurrent flowing to the heating device, such as insulation. ELB (Earth Leakage Circuit Breaker) is provided to prevent heat supply to the material and large fire.

Conventionally, when an electric leakage occurs due to incomplete insulation of a wiring or a heating device, the ELB (Earth Circuit Breaker) for blocking an electric leakage in a state where an MG (electronic switch) is turned on cannot be recognized even if the ELB (Earth Circuit Breaker) is tripped. After tripping), power is not supplied to the heating device, causing the pipe pipe to freeze, causing waste to continuously drain tap water, and causing economic losses due to freezing.

Accordingly, the present invention is to quickly recognize the ELB (earth leakage breaker) trip (trip), so that the response according to the ELB (earth leakage breaker) trip (trip) can be made quickly.

Therefore, the present invention is connected to a power input terminal MG (electronic switchgear) for controlling the introduction of power, and connected to the MG (electronic switchgear) at least one or more ELB (leakage circuit breaker) for detecting the occurrence of a short circuit breaker, and An AC-DC converter which is connected to an output terminal of an MG (electronic switch) and at least one ELB (leakage circuit breaker) and converts AC power into DC power, and MG (electronic switch) converted by the AC-DC converter And a decision control unit for comparing the DC voltage and current of at least one ELB (leakage circuit breaker) to each other, or connected to an output terminal of the MG (electronic switchgear) and at least one ELB (leakage circuit breaker), respectively, to extract an AC signal from the non-calculated signal. The control unit to compare each other with each other, an alarm lamp display unit indicating whether or not there is an ELB (leakage circuit breaker) tripped by the control of the determination control unit, and An ELB trip LED display unit for indicating an ELB (leakage circuit breaker) and a tripping of the ELB (leakage circuit breaker) and a tripped tripped ELB (leakage circuit breaker) under the control of the judgment control unit to send a signal to the communication operator of the management operator of the piping heating device. ELB trip for piping heating apparatus comprising a communication unit, a DRY contact output unit for applying a voltage-free contact signal that does not apply a voltage signal under the control of the determination control unit, and a DC power supply unit for supplying power to the determination control unit. It is an object of the present invention to solve a conventional problem by providing an alarm system.

As described above, according to the ELB trip alarm system for a pipe heating device of the present invention, a direct current voltage at the output side power supply of an MG (electronic switch) controlling an externally applied power supply and an ELB (leakage circuit breaker) connected to each heating device. Extract the value or DC current value and calculate the value in the judgment control unit or connect to the output terminal of MG (electronic switch) and at least one ELB (leakage circuit breaker), extract AC signal from non-calculated signal, and compare and calculate By alerting the heating device operator to the ELB trip as an alarm signal, the operator can quickly respond effectively to a short circuit situation (recovery of the piping heating device system), and as a result, respond quickly to a situation that occurs after the short circuit shutdown. New and effective to prevent economic loss or personal injury caused by A Vaughan invention.

In order to achieve the above object, the present invention is to configure an ELB (leakage circuit breaker) trip alarm system for a pipe heating device,

An MG (electronic switch) 10 connected to the power input terminal to control whether power is input;

At least one ELB (leakage circuit breaker) connected to an output terminal of the MG (electronic switch) to sense whether a ground fault interruption on the load side occurs;

An AC-DC conversion unit 30 connected to the output terminals of the MG (electronic switch) 10 and at least one ELB (leakage circuit breaker) 20 to convert AC power into DC power;

A determination controller 40 for comparing the DC voltages of the MG (electronic switch) 10 and at least one ELB (leakage circuit breaker) 20 converted by the AC-DC converter 30 with each other;

An alarm lamp display unit (50) informing the presence or absence of the ELB (leakage circuit breaker) 20 tripped by the control of the determination controller 40;

An ELB trip LED display unit 60 for informing the ELB (leakage circuit breaker) 20 tripped by the control of the determination controller 40;

A communication unit 70 for transmitting a signal of the ELB (leakage circuit breaker) 20 and controlling the tripped ELB (leakage circuit breaker) 20 to the communication unit of the management operator of the pipe heat generating device under the control of the determination controller 40;

A DRY contact output unit 80 for applying a voltage-free contact signal not applying a voltage signal by the control of the determination controller 40;

It comprises a DC power supply unit 90 for supplying power to the determination control unit 40.

And a determination control unit for extracting a DC current value from each DC power source of the MG (electronic switch) converted by the AC-DC converter and at least one ELB (leakage circuit breaker) and comparing the values with each other.

And connected to the power input terminal MG (electronic switch) for controlling the power supply;

At least one ELB (leakage circuit breaker) connected to the MG (electronic switchgear) to detect whether an earth leakage circuit occurs;

A determination control unit connected to the output terminals of the MG (electronic switch) and at least one ELB (leakage circuit breaker) to extract abnormal signals from an AC power source and compare the values with each other;

An alarm lamp display unit for indicating the presence or absence of an ELB (leakage circuit breaker) tripped by the control of the determination controller;

An ELB trip LED display for informing an ELB (leakage circuit breaker) tripped by the control of the decision controller;

A communication unit for signaling a trip of the ELB (leakage circuit breaker) and the tripped tripped ELB (leakage circuit breaker) to the communication unit of the management operator of the pipe heat generating device by the control of the judgment control unit;

A DRY contact output unit for applying a voltage-free contact signal not applying a voltage signal by the control of the determination controller;

It comprises a DC power supply for supplying power to the determination control unit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the MG (electronic switch) 10 is connected to a power input terminal to control whether power is input.

And the ELB (leakage circuit breaker) 20 is connected to the at least one or more MG (electronic switchgear) 10 according to the number of loads to detect whether the ground fault interruption occurs for the leakage occurring after the output terminal when the ground fault occurs Shut off power to the load side.

In addition, the AC-DC converter 30 may extract the voltage value and current value of the DC power supply from the decision controller 40, and the MG (electronic switch) 10 and at least one ELB (leakage circuit breaker) 20. It is connected to each output terminal of and converts AC power into DC and applies DC power to the rear stage.

In addition, the determination controller 40 may be configured to generate a DC voltage value or a DC current at a DC power supply of the MG (electronic switch) 10 and at least one ELB (leakage circuit breaker) 20 converted by the AC-DC converter 30. Each of the values is extracted. A system (not shown) for measuring a DC voltage or a DC current is provided inside the determination controller 40 to extract a DC voltage value or a DC current value.

Each of the extracted voltage value or current value is compared with a DC voltage value or a DC current value of the MG (electronic switch) 10 to a DC voltage value or DC current value of at least one ELB (leakage circuit breaker) 20. A trip of the ELB (earth leakage breaker) 20 is sensed.

In addition, the alarm lamp display unit 50 informs the presence or absence of the ELB (earth leakage breaker) 20 tripped by the determination (operation value) of the determination control unit 40, and the determination control unit 40 in the MG (electronic switch) A trip of the ELB 20 is detected by comparing the DC voltage value or the DC current value of 10 to the DC voltage value or the DC current value of at least one ELB (leakage circuit breaker) 20. When the lamp signal is applied to the lamp display unit 50, the lamp display unit is turned on.

 The ELB trip LED display unit 60 configures the corresponding LED according to the number of the ELBs (leakage circuit breakers), and corresponding ELBs (leakage circuit breakers) according to the trip determination (operation value) of the determination controller 40. The control signal is applied to turn on the corresponding LED, and the LED corresponding to the tripped ELB (leakage circuit breaker) 20 is turned on to inform the tripped ELB (leakage circuit breaker) 20.

In addition, the communication unit 70 controls the operator of the tripped ELB (leakage circuit breaker) 20 pipe pipe freezing system when a tripped ELB (leakage circuit breaker) 20 occurs according to the determination (operation value) of the decision control unit 40. Send a signal to the communication unit.

The DRY contact output unit 80 applies a voltage-free contact signal that does not apply a voltage signal by the determination (operation value) of the determination controller 40.

In addition, the DC power supply unit 90 receives the AC power, converts the AC power applied through the AC power supply into the DC power, and supplies the DC power to the determination controller.

Looking at an embodiment of the present invention with reference to the drawings as follows.

First, a pipe heat generating device to which the ELB trip alarm system is applied is constructed, and all the heating devices A to the heating device C, which are configured on the outer surface of the pipe pipe by heating the MG (electronic switch), heat the pipe.

At this time, the ELB (leakage circuit breaker) A (20a), ELB (leakage circuit breaker) B (20b), ELB (connected to the heating device C in the MG (electronic switch) 10 and the heating device A by the ELB trip alarm system. Connected to the output terminal of the earth leakage breaker C20c, respectively, converts AC power into DC and applies DC power to the determination controller 40 at the rear stage, and the determination controller 40 applies the voltage value and current of each DC power supply. Extract the value.

Therefore, the judgment controller 40 determines the DC power supply voltage and current value of the MG (electronic switchgear) 10, ELB (leakage circuit breaker) A (20a), ELB (leakage circuit breaker) B (20b), ELB (leakage circuit breaker) C ( The trip of the ELB (earth leakage breaker) can be determined by comparing the DC power supply voltage and the current value of 20c) with each other.

For example, if the DC power supply voltage and current value of the MG (electronic switchgear) 10 is 1, and the DC power supply voltage and current value of the ELB (leakage circuit breaker) 20 is 1, the ELB (leakage circuit breaker) 20 is not tripped. If the DC power supply voltage and current value of the ELB (leakage circuit breaker) 20 are 0, the ELB (leakage circuit breaker) 20 has tripped.

If the wiring insulation of the heating device A and the insulation of the heating device A are incomplete, a leakage current occurs, and the ELB (leakage circuit breaker) A 20a connected to the heating device A trips to block a short circuit.

At this time, the DC power supply voltage and current value of the MG (electronic switchgear) 10 is 1, the value 0 at the ELB (leakage circuit breaker) A (20a), ELB (leakage circuit breaker) B (20b), ELB (leakage current) The breaker) C (20c) is 1, the decision control unit 40, the ELB (earth leakage breaker) A (20a) that is different from the DC power supply voltage and current value of the MG (electronic switch) 10 is tripped. Determine.

As described above, when the ELB (Earth Circuit Breaker) A 20a is tripped, the determination controller 40 applies a lighting signal to the alarm lamp display unit 50 so that the alarm lamp is turned on, and the ELB trip LED display unit 60 has a corresponding ELB ( The control signal is applied so that the LED corresponding to the earth leakage breaker) turns on, and the LED corresponding to the tripped ELB (earth leakage breaker) 20 is turned on, and the voltage-free voltage is not applied to the DRY contact output unit 80. The contact signal is applied, and information is sent to the communication unit of the management operator of the pipe-pipe freezing system that the ELB (earth leakage breaker) 20 has tripped and to the tripped ELB (earth leakage breaker).

When the management operator of the pipe heating device recognizes the trip of the ELB (leakage circuit breaker) 20 to the communication unit, the corresponding response is made.

As described above, the present invention extracts a voltage or current value from a DC power source of an MG (electronic switchgear) and an ELB (leakage circuit breaker), and compares the extracted voltage or current value with each other to generate an alarm signal when a trip of the ELB (leakage circuit breaker) occurs. Printing to the operator is the basic technical idea.

In addition, a sensor (not shown) for extracting an AC power signal is formed in the determination controller 40, and the output terminals of the MG (electronic switch) and at least one ELB (leakage circuit breaker) are respectively provided to the determination controller 40. It is a technical idea to extract an abnormal signal from the output AC power source, compare the values, and output an alarm signal to an operator when an ELB (earth leakage breaker) trip occurs.

As described above, the rights of the present invention are limited to the above-described embodiment of the pipe heating apparatus, but are not limited thereto, and are defined by the claims, and those of ordinary skill in the art of the present invention It is obvious that various modifications and adaptations can be made within the scope of the rights described.

1 is a block diagram showing a configuration according to the present invention

<Explanation of symbols for each major part of drawing>

        10: MG (Electronic Switch) 20: ELB (Earth Circuit Breaker)

        30: AC-DC converter 40: decision control unit

        50: alarm lamp display 60: ELB trip LED display

        70: communication unit 80: DRY contact output unit

        90: DC power supply

Claims (3)

In constructing an ELB tripping alarm system for piping heating devices, An MG (electronic switch) connected to a power input terminal for controlling power input; At least one ELB (leakage circuit breaker) connected to an output terminal of the MG (electronic switch) to sense whether a ground fault interruption on the load side occurs; An AC-DC conversion unit connected to an output terminal of the MG (electronic switch) and at least one ELB (leakage circuit breaker) to convert AC power into DC power; A determination controller for extracting a DC voltage value from each DC power source of the MG (electronic switch) converted by the AC-DC converter and at least one ELB (leakage circuit breaker) and comparing the values with each other; An alarm lamp display unit for indicating the presence or absence of an ELB (leakage circuit breaker) tripped by the control of the determination controller; An ELB trip LED display for informing an ELB (leakage circuit breaker) tripped by the control of the decision controller; A communication unit for signaling a trip of the ELB (leakage circuit breaker) and the tripped tripped ELB (leakage circuit breaker) to the communication unit of the management operator of the pipe heat generating device by the control of the judgment control unit; A DRY contact output unit for applying a voltage-free contact signal not applying a voltage signal by the control of the determination controller; An ELB trip alarm system for a piping heating device, characterized in that it comprises a DC power supply for supplying power to the judgment control unit. The method according to claim 1, And a determination control unit for extracting a DC current value from each DC power source of the MG (electronic switch) converted by the AC-DC converter and at least one ELB (leakage circuit breaker) and comparing the values with each other. ELB trip alarm system for piping heating device. In constructing an ELB tripping alarm system for piping heating devices, An MG (electronic switch) connected to a power input terminal for controlling power input; At least one ELB (leakage circuit breaker) connected to the MG (electronic switchgear) to detect whether an earth leakage circuit occurs; A determination control unit connected to the output terminals of the MG (electronic switch) and at least one ELB (leakage circuit breaker) to extract abnormal signals from an AC power source and compare the values with each other; An alarm lamp display unit for indicating the presence or absence of an ELB (leakage circuit breaker) tripped by the control of the determination controller; An ELB trip LED display for informing an ELB (leakage circuit breaker) tripped by the control of the decision controller; A communication unit for signaling a trip of the ELB (leakage circuit breaker) and the tripped tripped ELB (leakage circuit breaker) to the communication unit of the management operator of the pipe heat generating device by the control of the judgment control unit; A DRY contact output unit for applying a voltage-free contact signal not applying a voltage signal by the control of the determination controller; And a DC power supply unit for supplying power to the determination control unit.

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