KR20230149545A - Electric wire leakage current monitoring unit - Google Patents

Abstract

The present invention relates to an electric line leakage current monitoring unit;
The purpose of implementing the technology is to monitor abnormal overheating of electrical wiring and power cables or microcurrents leaking from them in real time with visual information through the luminous effect of the status display lamp, and to detect abnormal overheating and current leakage through such monitoring function. The aim is to provide an electric line leakage current monitoring unit that can greatly increase functionality, safety, and efficiency of use by preventing malfunctions and causes of fixation of various electrical appliances that occur due to .
Therefore, specific means of the present invention for achieving the above object include:
A temperature measurement unit formed of a first noise filter having a first wire fastening hole, a temperature detection sensor, and a temperature signal ground pin;
A leakage current measurement unit formed of a second noise filter having a second wire fastening hole, a current detection sensor, and a current signal ground pin;
It is formed of a detection information display unit consisting of a fixed body with a wire insertion hole and a detection circuit board, wherein the detection circuit board is formed of an information display window, a temperature signal ground clip, a current signal ground clip, and an electromagnetic induction unit. do.

Description

Electric wire leakage current monitoring unit}

The present invention relates to a means for detecting leakage current, and more specifically, to electrical wiring installed in switchboards and distribution boards, as well as power cables of various electrical appliances used for connection to outlets, etc., to prevent overheating and leakage of the electrical wiring and power cables. It monitors microcurrents in real time as a visual information display by emitting a lamp, and also minimizes the negative effects of unnecessary electrical hazards such as ground loops and power harmonics that occur due to current leakage, causing abnormalities in various electrical appliances. It relates to an electric line leakage current monitoring unit that prevents operation or malfunction as well as the risk of safety accidents such as electric shock and fire.

The switchboard is a means of accommodating and installing various relays and switches and controlling the current by the installed relays and switches. For example, it converts extra-high voltages of tens of thousands of volts into low voltages of hundreds of volts for apartments, buildings, schools, and factories. This refers to a device that supplies power to consumers, such as a power supply, etc., and is generally manufactured with a capacity of about 100kW to 1000kW.

In other words, the distribution board converts the high voltage electricity transmitted from the power plant into an appropriate voltage that can be used by consumers, and distributes and supplies the converted voltage to the distribution board for each use location within the facility through the main line.

On the other hand, in indoor wiring, a distribution board is a means in which switches for each branch are installed where the main line branches off into branch circuits. For example, the distribution board distributes the power supplied from the distribution board to lights or electric power loads installed in buildings, factories, houses, etc. This refers to a device that does this, and earth leakage circuit breakers and circuit breakers are installed as essential components in these switchboards and distribution boards.

In addition, various electric devices and electric appliances used in industrial sites or at home are connected by power cables for necessary operation, for example, by connecting to outlets that are distributed and connected from the above-mentioned switchboard or distribution board, etc. to provide the power necessary for operation. will be supplied.

Here, the earth leakage breaker installed in the switchboard and distribution board functions to quickly detect the leakage phenomenon and automatically cut off electricity when a leakage occurs in indoor wiring or various electrical appliances.

In addition, the molded circuit breaker installed in the switchboard and distribution board, etc., uses one circuit breaker for one electric circuit and performs the function of automatically cutting off electricity when an overcurrent exceeding the allowable current per circuit flows.

In other words, various circuit breakers installed and used in switchboards or distribution boards are generally designed to turn off at a set amount of current or more, for example, a leakage current of 15 mA or more and 30 mA or less.

Therefore, when the current leaking from the electrical wiring is less than the designed current amount, for example, in a small amount, the circuit breaker remains in the ON state without detecting this and is left defenseless against the leakage of the small current, In this way, the microcurrent that leaks when left unattended ultimately has a significant negative impact on the operation of electrical wiring and various electrical appliances.

In addition, various circuit breakers installed and used in switchboards or distribution boards not only have the problem of not detecting leakage of microcurrent, but also have the conflicting disadvantage of malfunctioning due to microcurrent.

For example, even if a circuit breaker is designed and used to automatically turn off within a set current amount range, a certain range of design errors inevitably exist in the circuit breaker used. Therefore, if the current leaking from the electrical wiring is in a high range that does not exceed the designed current amount, for example, if the current leaks in an amount close to the set value, this is sometimes recognized as overcurrent and the circuit breaker is shut down unnecessarily. In particular, the shutdown phenomenon of circuit breakers causes malfunctions in precision equipment such as measuring equipment, communication equipment, and imaging equipment, and even acts as a cause of fixation of these precision equipment.

Republic of Korea Patent Registration No. 1836949 (registered on March 5, 2018) Republic of Korea Patent Registration No. 1129254 (registered on March 15, 2012)

The present invention was created to solve the general problems of conventional microcurrent detection means that leak from electrical wiring;

The purpose of the present invention is to use electric wiring and power cables of various electric appliances installed to distribute and supply electricity to lighting fixtures, electric appliances, and power connectors in other partitioned indoor spaces. Overheating and leakage of micro-current are monitored in real time with visual information through the luminous action of the status display lamp, and such monitoring function prevents malfunctions and fixing causes of various electrical appliances caused by abnormal overheating and current leakage in advance. The goal is to provide an electric line leakage current monitoring unit that can greatly increase functionality, safety, and use efficiency by preventing leakage current.

The purpose of the present invention is not only to provide a simple means of monitoring leakage current, but also to stably eliminate unnecessary electrical hazards such as ground loops, power harmonics, and noise generated by electrical wiring and power cables through the ferrite core function. Electric line leakage current is used to safely protect precious life and property by offsetting such harmful factors and preventing abnormal operation or breakdown of electrical equipment as well as the risk of safety accidents such as electric shock and fire through the offsetting effect of such harmful factors. It provides a surveillance unit.

Therefore, specific means of the electric line leakage current monitoring unit according to the present invention to achieve the above object include:

A temperature measurement unit formed of a first noise filter having a first wire fastening hole, a temperature detection sensor, and a temperature signal ground pin;

A leakage current measurement unit formed of a second noise filter having a second wire fastening hole, a current detection sensor, and a current signal ground pin;

It is formed of a detection information display unit consisting of a fixed body with a wire insertion hole and a detection circuit board, wherein the detection circuit board is formed of an information display window, a temperature signal ground clip, a current signal ground clip, and an electromagnetic induction unit. do.

As described above, the electric line leakage current monitoring unit according to the present invention, from the electric wiring installed to distribute and supply electricity to various power cables, detects abnormal overheating and leakage of microcurrent from the electric wiring and power cables to the display lamp. It monitors in real time through the luminescent effect, and through such monitoring function, malfunctions and causes of fixation of various electrical appliances caused by abnormal overheating and current leakage are prevented. This has the effect of increasing functionality, safety, and efficiency of use. to provide.

Alternatively, the electric line leakage current monitoring unit according to the present invention eliminates unnecessary electrical hazards such as ground loops, power harmonics, and noise generated by electrical wiring and power cables according to the material characteristics of the unit body. It is stably offset by the ferrite core function, and the offsetting effect of such harmful factors prevents the risk of safety accidents such as abnormal operation or breakdown of electrical equipment as well as electric shock and fire, which protects precious life and property. It provides very useful expected effects, such as providing safe protection.

Figure 1 is a perspective view of the combined installation state of the electric line leakage current monitoring unit according to the present invention.
Figure 2 is a cross-sectional view of the combined installation state of the electric line leakage current monitoring unit according to the present invention.
Figure 3 is a cross-sectional diagram of the temperature measurement unit and current measurement unit applied to the present invention.
Figure 4 is a cross-sectional configuration diagram of the sensing information display unit applied to the present invention.
Figure 5 is a main cross-sectional view of this embodiment of the electric line leakage current monitoring unit according to the present invention.
Figure 6 is a main sectional view of three embodiments of the electric line leakage current monitoring unit according to the present invention.

Hereinafter, the configuration of a preferred embodiment of the electric line leakage current monitoring unit according to the present invention will be described in detail based on the attached drawings.

Looking at the schematic configuration of the electric line leakage current monitoring unit according to the present invention with reference to the attached drawings, it consists of a temperature measurement unit (1), a leakage current measurement unit (2), and a detection information display unit (3). .

Here, first, the temperature measuring unit 1 is a means for measuring and detecting abnormal overheating of electric wiring installed in switchboards and distribution boards, as well as power cables of various electrical appliances used to connect to outlets, etc., such as electric wires.

As shown in FIGS. 1 to 3, the temperature measurement unit 1 has a circular block configuration and has a central portion penetrated, for example, a first noise filter 11 provided with a first wire fastening hole 111. ) and forms a temperature sensing sensor 12 of a circular band structure coupled to the inner diameter surface of the first wire fastening hole 111, and a temperature sensing sensor 12 of FIG. 2 is attached to one side of the temperature sensing sensor 12. It is preferable to form a temperature signal ground pin 13 that is connected and extends horizontally as shown in the partially enlarged view.

At this time, in the temperature measurement unit 1, the first noise filter 11 is formed using a ceramic of a magnetic material containing iron oxide, for example, a ferrite material that is excellent in filtering electrical noise, and the first noise filter In (11), the first wire fastening hole 111 is used as a means to prevent the inserted temperature sensing sensor 12 from sliding outward when the temperature sensing sensor 12 is coupled to the insertion structure. As shown in FIG. 2, a temperature sensor separation prevention bump 112 is formed, and a temperature ground pin guide hole ( P1) is further formed as shown in the enlarged view of part A of FIG. 2.

In addition, the current measuring unit 1 is a means for measuring and detecting microcurrents leaking from electrical wiring installed in switchboards and distribution boards, as well as power cables of various electrical appliances used for connection to outlets, etc., such as electric wires.

This leakage current measurement unit 2 has a circular block configuration as shown in FIGS. 1 to 3 and has a central portion penetrated, for example, a second noise filter 21 provided with a second wire fastening hole 211. ) and forms a current sensing sensor 22 of a circular band structure coupled to the inner diameter surface of the second wire fastening hole 211, and B of FIG. 2 on one side of the current sensing sensor 22. It is preferable to form a current signal ground pin 23 that is connected and extends horizontally as shown in the partially enlarged view.

At this time, in the current measurement unit 2, the second noise filter 21 is formed using a ceramic of a magnetic material containing iron oxide, for example, a ferrite material that is excellent in filtering electrical noise, and the second noise filter In (21), the second wire fastening hole 211 is used as a means to prevent the inserted current sensing sensor 22 from sliding outward when the current sensing sensor 22 is coupled to the insertion structure. As shown in Figure 2, a current sensor separation prevention bump 212 is formed, and in addition, a current ground pin guide hole (current ground pin guide hole) is provided on one side of the current sensor separation prevention bump 212 as a means of guiding the above-described current signal ground pin 23. P2) is further formed as shown in the enlarged view of part B of FIG. 2.

Finally, the detection information display unit 3 transmits a real-time change signal for the heating temperature and leakage current amount of the wire 100 measured and detected by the temperature measurement unit 1 and the leakage current measurement unit 2 described above. It is a means for visually identifying and determining the current state of the heating temperature and leakage current of the wire 100.

This monitoring information display unit 3 has a circular block configuration as shown in FIG. 1 or 2 and has a central portion penetrated, for example, forming a fixed body 31 provided with a wire insertion hole 311. , It is preferable to form a sensing circuit board 32 coupled to the outer surface of the fixing body 31 in a close insertion structure as shown in FIG. 4.

At this time, in the sensing information display unit 3, the sensing circuit board 32 forms an exposed information display window 321 on the surface of the sensing circuit board 32, as shown in Figure 2 or Figure 4. do.

In addition, it protrudes from one side of the sensing circuit board 32 and forms a temperature signal ground clip 322 that is connected to the ground with the temperature signal ground pin 13 described above as shown in the enlarged view of portion A of FIG. 2.

In addition, it protrudes from the other side of the sensing circuit board 32 and forms a current signal ground clip 323 that is connected to the ground with the current signal ground pin 23 described above.

In addition, an electromagnetic induction unit 324 is attached to the rear portion of the winding circuit board 32 and is in close contact with the covering surface of the wire 100 and guides the microcurrent flowing out of the wire 100 into an electric energy source necessary for operating the information display window 321. ) to form.

In addition, the sensing circuit board 32 is formed by mounting a circuit element (not shown) in which numerical information ranging from the normal range to the dangerous range with respect to the heating temperature and leakage current amount of the wire 100 is set as preset information. .

In particular, in the sensing circuit board 32, the information display window 321 displays the heating temperature of the wire 100 detected by the above-described temperature detection sensor 12 and the electric wire detected by the current detection sensor 22. Depending on the change in leakage current of (100), it is divided into normal, caution, warning, and danger stages, and lights up in different colors according to the stage. For example, colorless for normal, yellow for caution, orange for warning, etc. In case of a dangerous situation, it can be formed with multiple luminous display lamps (R) that light up in red.

Therefore, looking at the installation and use relationship of the electric line leakage current monitoring unit according to the present invention, which consists of a series of configurations as described above;

First, insert the wire 100 into the first wire fastening hole 111, the wire insertion hole 311, and the second wire fastening hole 211 in the order shown in FIG. 1 or 2, The temperature measurement unit (1) and the leakage current measurement unit (3) are brought into close contact with the left and right sides of the sensing information display unit (3), centering on the sensing information display unit (3), by inserting the wires according to that order. .

At this time, in the above adhesion process, the temperature signal ground pin 13 of the temperature measurement unit 1 is connected to the temperature signal ground clip 322 of the sensing circuit board 32 in an insertion structure, and the leakage current measurement unit ( By connecting the current signal ground pin 23 of 2) to the current signal ground clip 323 of the sensing circuit board 32 through an insertion structure to achieve a combined installation state as shown in FIG. 2, according to the present invention. Implement an electric line leakage current monitoring unit.

Accordingly, as described above, the electric line leakage current monitoring unit according to the present invention having an installation connection state measures and detects the heating temperature of the electric wire by the temperature detection sensor 12 coupled to the temperature measurement unit 1, and detects the leakage. The leakage current of the wire is measured and detected by the current detection sensor 12, which is formed by combining the current measurement unit 2, and the heat generation temperature and leakage current amount of the detected wire are measured through the temperature signal ground pin 13 and the current signal ground pin ( 23), it is transmitted to the detection circuit board 32 formed as a monitoring information display unit.

Afterwards, the sensing circuit board 32 transmits the heating temperature and leakage current amount of the wire received from the temperature measurement unit 1 and the leakage current measurement unit 2 to a circuit element (not shown) set to preset numerical information. and lights up in distinct colors such as normal, caution, warning, and danger through the luminous display lamp (R) of the information display window 321 in accordance with the read information, allowing the user to check the overheating state of the wire 100. Allows you to check the current leakage status.

At this time, in the series of installation and use relationships as described above, the first noise filter 11 of the temperature measurement unit 1 and the second noise filter 21 of the leakage current measurement unit 2 are ferrite. As it is formed from a material, it has the additional function of filtering out high-frequency signals of the wire 100, for example, canceling out electrical noise that acts as a harmful factor in various electrical appliances.

Meanwhile, Figure 5 shows a main cross-sectional view of this embodiment of the electric line leakage current monitoring unit according to the present invention.

As described above, the present invention as an embodiment closely couples the temperature sensing sensor 12 to the first elastic compression member having an arc-shaped cross-section in the configuration of the above-described embodiment, and the temperature sensing sensor 12 coupled as such is provided. It is preferable to install and couple the first elastic compression member 15 to the temperature sensor separation prevention bump 112 formed by the first wire fastening hole 111 in a locking structure as shown in FIG. 5.

In addition, in the configuration of the above-described embodiment, the current sensing sensor 22 is closely coupled to the second elastic compression member having an arc-shaped cross-section, and the current sensing sensor 22 and the second elastic compression member thus coupled are ( 25) is preferably installed and coupled to the current sensor separation prevention bump 212 formed by the second wire fastening hole 211 in a locking structure as shown in FIG. 5.

Therefore, in this embodiment of the present invention, in inserting and coupling the wire 100 into the first wire fastening hole 111 and the second wire fastening hole 211, the first elastic compression member 15 whose cross-section is raised in an arc shape ) and the second elastic compression member 25 serves to double the installation fixing force of the temperature measurement unit 1 and the leakage current measurement unit 2 by strongly elastically compressing the outer surface of the wire 100.

Alternatively, Figure 6 shows a main sectional view of three embodiments of the electric line leakage current monitoring unit according to the present invention.

The present invention as three embodiments further forms a first fire prevention member 14 around the outer surface of the first noise filter 11 in the configuration of the above-described embodiment, and the inner surface of the first fire prevention member 14 It is preferable to further form a first fire extinguishing hole (141) in which the fire extinguishing agent (E) is filled and accommodated in a sealed structure in a divided circular arrangement configuration.

In addition, in the configuration of the above-described embodiment, a second fire prevention member 24 is further formed around the outer surface of the second noise filter 21, and the second fire prevention member 24 is arranged in a divided circular shape on the inner surface. It is preferable to further form a second fire extinguishing hole (241) filled with fire extinguishing agent (E) in a sealed structure.

Therefore, the present invention as these three embodiments does not detect abnormal overheating or overcurrent phenomenon, and when a fire occurs in the wire 100 due to abnormal overheating or overcurrent phenomenon that was not detected, the first fire is caused by the generated fire heat. The prevention member 14 and the second fire prevention member 24 melt and leak the fire extinguishing agent (E) filled in the first fire extinguishing hole 141 and the second fire extinguishing hole 141, thereby causing the wire 100 It performs the function of extinguishing fires caused by fire at an early stage.

1: Temperature measurement unit 2: Leakage current measurement unit
3: Sensing information display unit 11: First noise filter
12: Temperature detection sensor 13: Temperature signal ground pin
14: first fire prevention member 15: first elastic compression member
21: second noise filter 22: current detection sensor
23: Current signal ground pin 24: Second fire prevention member
25: second elastic compression member 31: fixed body
32: Sensing circuit board

Claims (5)

A first noise filter 11 through which a first wire fastening hole 111 is formed in the central portion, a temperature sensing sensor 12 coupled to the inner diameter surface of the first wire fastening hole 111, and the temperature sensing sensor. A temperature measurement unit (1) formed by a temperature signal ground pin (13) connected to one side of (12) and extending in a horizontal structure;
A second noise filter 21 through which a second wire fastening hole 211 is formed in the center, a current sensing sensor 22 coupled to the inner diameter surface of the second wire fastening hole 211, and the current sensing sensor ( It is connected to one side of 22) and includes a leakage current measurement unit (2) formed by a current signal ground pin (23) extending in a horizontal structure;
A sensing information display unit (3) is further formed consisting of a fixing body (31) with a wire insertion hole formed in the center, and a sensing circuit board (32) coupled to one outer surface of the fixing body (31), wherein the sensing circuit board ( 32) includes an information display window 321 exposed to the surface, a temperature signal ground clip 322 that protrudes from one side of the sensing circuit board 32 and is connected to the ground with the temperature signal ground pin 13, and a sensing circuit board 32. The current signal grounding clip 323 is formed to protrude from the other side of the circuit board 32 and is connected to the ground with the current signal grounding pin 23, and is in close contact with the wire covering surface to induce the micro current flowing from the wire into an electric energy source. An electric line leakage current monitoring unit characterized by being formed of an electromagnetic induction unit 324.
According to claim 1;
The first wire fastening hole 111 of the first noise filter 11 couples the temperature sensor 12 into an insertion structure and prevents the insertion-coupled temperature sensor 12 from being separated. 112) to form;
The second wire fastening hole 211 of the second noise filter 21 combines the current sensing sensor 22 with an insertion structure, and the current sensor departure prevention bump 212 prevents the insertion-coupled current sensing sensor 22 from being separated. ), including those formed;
A temperature ground pin guide hole (P1) is further formed on one side of the temperature sensor separation prevention bump (112) to guide the temperature signal ground pin (13);
An electric line leakage current monitoring unit, characterized in that a current ground pin guide hole (P2) is further formed on one side of the current sensor separation prevention bump (212) to guide the current signal ground pin (23).
According to claim 1;
The information display window 321 of the sensing circuit board 32 displays normal or caution depending on the temperature of the wire detected by the temperature detection sensor 12 and the change in the amount of leakage current of the wire detected by the current detection sensor 22. An electric line leakage current monitoring unit that is divided into , warning, and danger stages and is composed of a plurality of light-emitting display lamps (R) that light up in different colors according to the stages.
According to claim 1;
The temperature sensor 12 is installed in a structure in which it is closely coupled to a first elastic compression member having an arc-shaped cross-section and is fixed to the temperature sensor separation prevention bump 112 formed by the first wire fastening hole 111;
The current sensing sensor 22 is closely coupled to the second elastic compression member having an arc-shaped cross-section and is installed in a structure that is fixed to the current sensor separation prevention bump 212 formed by the second wire fastening hole 211. Electric line leakage current monitoring unit.
According to claim 1;
The first noise filter 11 further forms a first fire prevention member 14 around the outer surface, and the first fire prevention member 14 forms a divided circular arrangement structure and contains a fire extinguishing agent (E). It is formed as a first fire extinguishing hole (141) filled and accommodated in a sealed structure;
The second noise filter 21 further forms a second fire prevention member 24 around the outer surface, and the second fire prevention member 24 forms a divided circular arrangement structure and contains a fire extinguishing agent (E). An electric line leakage current monitoring unit, characterized in that it is formed by a second fire extinguishing hole (241) filled and housed in a sealed structure.

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