KR102533840B1 - Distributin board for prevention of electric fire - Google Patents

Abstract

The present invention is a monitoring target of at least one of a conductor and an insulator, a fire sign displaying material capable of generating gas by heat generated from the monitoring target, a sensor unit equipped with a gas detection function, and the fire sign displaying material or monitoring target Disclosed is an electrical facility for preventing electrical fires, including a control unit that determines the level of fire symptoms with gas, wherein the control unit can discriminate the level of fire symptoms in stages using a fire symptom displaying material and a monitoring object.

Description

Distribution board for electrical fire prevention {DISTRIBUTIN BOARD FOR PREVENTION OF ELECTRIC FIRE}

The present invention relates to electrical facilities for preventing electrical fires, and more particularly, to a technology for monitoring or discriminating signs of electrical fires by using a fire sign displaying material, a gas generated from a conductor or an insulator.

Electrical equipment includes various parts, typically conductors and insulators. The electrical regulations stipulate the temperature rise limit and maximum allowable temperature for each electrical device or part. In addition, the electrical regulations stipulate the ambient temperature of the conductor and the measured temperature of the conductor.

Conventionally, as in the patent literature described in the prior art, a gas sensor was used to detect gas generated from an insulator, and signs of an electrical fire were found by detecting gas generated from incomplete combustion of the insulator. However, in the prior art, there are various problems as follows.

<Absence of display material that shows signs of fire near the maximum allowable temperature>

Since the insulator basically has a function of not passing electricity or heat, thermal decomposition does not occur even when the maximum permissible temperature is reached. For example, the maximum permissible temperature of 600V polyethylene insulated wire is 75 ° C, the melting point is about 137 ° C, and the ignition temperature is about 350 ° C.

Accordingly, in the prior art, since no gas is generated in the insulator at the maximum allowable temperature, it may be difficult to detect signs of fire using a gas sensor at the maximum allowable temperature of the insulator.

In addition, in the prior art, heat may be generated at a low temperature and then a sudden temperature rise may occur, and the time from the time of gas generation of the insulator to the time of ignition may be very short due to the rapid temperature rise, so fire can be prevented in advance only by detecting the gas of the insulator. It can be difficult to do.

<Limits of insulators that show signs of fire>

Insulators covering conductors generally contain halogen elements, generate halogen gases in the process of incomplete combustion, suppress combustion by reacting with additives, and release toxic gases such as dioxin or hydrogen chloride in the process of incomplete combustion, Corrosion of electrical equipment may occur.

However, conventionally, it is not possible to develop an insulator that does not generate various types of gases by minimizing emission of toxic gases and corrosion of conductors, and considering the selectivity or sensitivity of a gas sensor.

Korean Patent Registration No. 10-1691164

In order to solve the above problems, the present invention provides an electric facility for preventing electrical fires that monitors or determines signs of electrical fires using gas generated from a fire sign displaying material, conductor or insulator.

Electrical facilities for preventing electrical fires according to the first embodiment of the present invention for the above object to be solved include a monitoring target including an insulator for insulating a conductor; A fire sign displaying material 100 having a lower melting point than the insulator; Including a sensor unit 320 equipped with a gas detection function and a control unit 330 that determines the level of fire symptoms by the gas generated from the fire symptom expressing material or insulator, the control unit uses the fire symptom expressing material and the insulator in stages It is characterized in that it is possible to determine the level of fire signs.

An electrical facility for electrical fire prevention according to a second embodiment of the present invention includes a monitoring target including an insulator for insulating a conductor; A fire sign displaying material having a lower melting point than the insulator; Including a sensor unit composed of a first gas sensor for detecting the gas generated from the fire symptom display material and a second gas sensor for detecting the gas generated from the insulator and a control unit for determining the level of the fire symptom using the sensor unit, The first gas sensor is capable of detecting gas generated in an insulator, and the second gas sensor is characterized in that it detects a gas different from a gas detected as a target by the first gas sensor.

An electrical facility for preventing electrical fires according to a third embodiment of the present invention includes at least one monitoring target of a conductor and an insulator; A fire sign display material capable of generating gas by heat generated from the monitoring object; Including a sensor unit equipped with a gas detection function and a control unit that determines the level of fire symptoms by the gas generated from the fire symptom display material or monitoring target, the control unit detects fire symptoms step by step using the fire symptom display material and monitoring target. It is characterized in that it is possible to determine the level of.

An electrical facility for preventing electrical fires according to a fourth embodiment of the present invention includes at least one monitoring target of a conductor and an insulator; A fire sign display material capable of generating gas by heat generated from the monitoring object; It includes a sensor unit having a gas detection function and a control unit that uses the sensor unit to determine the level of a fire symptom, wherein the controller can determine the level of a fire symptom based on the type of gas.

An electric facility for preventing electrical fires according to a fifth embodiment of the present invention includes a conductor and an insulator with different gases generated as targets; Includes a sensor unit that detects gas generated by oxidation of the conductor or arc discharge, and a control unit capable of discriminating the level of fire signs based on the type of gas generated as a target and a sensor unit that detects gas generated by deterioration of an insulator It is characterized by doing.

Electrical facilities for preventing electrical fires according to a sixth embodiment of the present invention include a first gas sensor for detecting gas generated from a fire sign display material formed on a conductor or an insulator, and a second gas sensor for detecting gas generated from an insulator. A sensor unit composed of a sensor unit and a third gas sensor that detects gas generated from a conductor and a control unit that uses the sensor unit to determine the level of a fire sign, the sensor unit measures each gas sensor in consideration of the environment of the monitoring area. It is possible to attach or detach or deactivate the gas sensor, and the control unit sets a reference concentration for determining the fire symptom level for each gas sensor.

The present invention can install a gas sensor suitable for the monitoring target in consideration of the environment of the electrical facility, it is possible to determine the level of the fire sign in each step using the fire sign display material and the monitoring target, and the accuracy of the discrimination level of the fire sign Or it can improve efficiency.

1 shows an electrical facility for preventing electrical fires according to an embodiment of the present invention.
2 is an example showing the chemical properties of each synthetic resin.
3 shows the criterion for the temperature pattern method.
Figure 4 shows the maximum permissible temperature of the insulation class.
5 illustrates a connection body for preventing electrical fires according to an embodiment of the present invention.
6 illustrates a connection body for preventing electrical fires according to another embodiment of the present invention.
7 illustrates a cap for preventing electrical fires according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited by the embodiments.

1 shows an electrical facility for preventing electrical fires according to an embodiment of the present invention, and the electrical facility 10 means a facility including electrical equipment, and is representative of a transmission station, a substation, a power plant, a switchboard, Or is the divisional board. Electrical facilities 10 may refer to facilities existing in household, industrial, or buildings.

Electric equipment is divided into heavy electric equipment, home appliances and industrial equipment. Heavy electric equipment can have the name of power equipment and means equipment used for production, transportation or conversion of electrical energy. Heavy electric machines can transmit electrical energy through conductors. Home appliances and industrial devices refer to devices that are driven using electrical energy.

Electric devices can be classified into various devices such as transformers, disconnectors, bus-bars such as conductors, terminal blocks, wires and fixed winding resistors, and connections such as bolts and nuts for connection between conductors such as transmission of electric energy. may contain a sieve.

The electrical facility 10 includes a monitoring target, a fire sign display material 100 and a monitoring device 300. The subject to be monitored includes at least one of a conductor and an insulator as a subject that causes an electrical fire.

A conductor may transmit electrical energy and may be included in a part of an electric device. The insulator prevents electricity or heat from passing through, may be formed by surrounding conductors, may be formed at connection points between conductors, and may be included in parts of electric devices. The fire sign displaying material 100 is formed on a target to be monitored and can generate gas when heated by the target to be monitored.

2 is an example of chemical properties of each synthetic resin. Looking at the molecular structure, polyethylene, polypropylene, and polystyrene have only two types of atoms, carbon and hydrogen, and emit only hydrocarbon-based gas and water vapor during combustion. PVC has a molecular structure similar to polyethylene, but instead of one hydrogen, chlorine is located, and toxic gases of chlorine are generated during combustion.

Melting point means the temperature at which synthetic resin melts from solid to liquid, and at this time, gas is generated by thermal decomposition. Ignition temperature means the lowest temperature at which ignition or explosion occurs when heat is applied to the synthetic resin.

Figure 3 shows the criterion of the temperature pattern method, and Figure 4 shows the maximum permissible temperature of the insulation class. In addition, the electrical regulations stipulate the ambient temperature of the conductor and the measured temperature of the conductor. The criterion of the temperature pattern method may further include various devices such as molded transformers, condensers, MCCBs, power fuses (COS, PF) or instrument transformers (PT, CT) as well as the devices described in FIG. 3 .

Referring to Figures 2 and 3, the maximum permissible temperature of the 600V polyethylene insulated wire is 75 °C, the melting point is about 137 °C, and the ignition temperature is about 350 °C. More specifically, the polyethylene-based insulator does not generate gas at the maximum permissible temperature and may generate gas at the melting point.

The polyethylene-based insulator has insulating properties and can be manufactured with a thickness set to have a melting point of about 137°C. The fire symptom display material 100 may also be made of polyethylene, and instead may be made of a much thinner thickness than the insulator in order to have a melting point in the vicinity of the maximum permissible temperature of the insulator.

In the present invention, the exposure material 100 can be manufactured with a material having a lower melting point than the insulator, and the exposure material 100 can be manufactured by referring to the temperature rise limit and the standard of the maximum allowable temperature of the conductor or insulator. In addition, according to the present invention, the exposure material 100 can be made of a material that generates gas at a temperature between the maximum permissible temperature and the melting point of the insulator. The material of the display material 100 to be described later is an example, and various materials other than the example may be used.

The display material 100 may include a synthetic resin. Synthetic resin is commonly referred to as plastic, and the manufacturing method of synthetic resin is to make a monomer with a small molecular weight from petroleum, natural gas or coal, etc., and to perform polymerization, poly-addition, and polycondensation ), addition-condensation, and other polymerization reactions to polymerize small molecules.

Synthetic resins are typically polyethylene (PE: polyethylene), polystyrene (PS: polystyrene), polypropylene (PP: polypropylene), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene (ABS), and polymethyl methacrylate. (PMMA: polymethyl methacrylate) It is classified as polyethylenetere phthalate.

In the present invention, the melting point or ignition temperature may be low depending on the type of synthetic resin, and since the maximum permissible temperature of the conductor must be satisfied, a flame retardant that suppresses combustion of the synthetic resin can be used.

In the present invention, a non-halogen or inorganic flame retardant may be used in consideration of the selectivity of gas generated by thermal decomposition or incomplete combustion of an insulating material and human health.

The present invention can manufacture an exposing material 100 containing a synthetic resin and a flame retardant, and can manufacture a plurality of exposing materials 100 having different reference temperatures, and through a combustion test according to the heating temperature of the insulating material, the exposing material 100 ) can be produced. The combustion test is a test on the type and concentration of gas according to the heating temperature.

Since the gas generation time may vary according to the area or thickness of the exposure material 100, the present invention may perform a combustion test of the exposure material 100 in consideration of the area or thickness.

The main raw material of the surface material 100 may be a material having a low thermal decomposition temperature, and is typically ammonium carbonate or paraffin. When ammonium carbonate is thermally decomposed, ammonia gas is generated. When paraffin is thermally decomposed, hydrocarbon-based gas is generated.

Paraffin is a main material required for manufacturing candles, and may be used to manufacture candles by mixing beef tallow, stearic acid, or hydrogenated oil together, or by adding fragrances or odorants harmless to the human body, such as aroma.

Conventionally, since gases harmful to the human body rapidly increase when a candle is turned on or off, a candle warmer using the heat of a lamp has been released for the health of the human body. In the present invention, gas can be released from the display material 100 by using the heat of an insulator or conductor, like the method of operating a candle warmer.

In the present invention, a fragrance harmless to the human body can be added to the display material 100, and a worker can detect signs of an electrical fire by smelling the fragrance. In the present invention, the display material 100 can be manufactured in consideration of the maximum permissible temperature of the subject to be monitored, and materials capable of generating gas at a set reference temperature can be used in addition to the above-mentioned materials.

The display material 100 can generate a small amount of gas if the heat is continuously maintained even if it does not receive heat that does not reach the set reference temperature, and the monitoring device 300 determines the standard according to the amount of gas generated by the display material 100 this should be set The criterion for discrimination according to the amount of gas generated can be obtained through a thermal decomposition experiment of the display material.

The monitoring device 300 includes a sensor unit 320 and a control unit 330. The sensor unit 320 has a gas detection function and is formed adjacent to the monitoring target 100 . The control unit 330 uses the sensor unit 320 to monitor signs of electrical fire.

The sensor unit 320 includes a gas sensor for detecting gas generated from the display material 100 . The sensor unit 320 may include a temperature and humidity sensor for error correction of gas concentration.

As shown in FIG. 2 , the sensor unit 320 and the control unit 330 may be manufactured integrally, or may be manufactured separately in consideration of the monitoring area where the monitoring target is located. The monitoring device 300 may further include a case 310 housing the sensor unit 320 and the control unit 330 to be integrally manufactured.

The sensor unit 320 includes a first gas sensor for detecting gas generated from the fire sign displaying material 100 formed on the conductor or insulator, a second gas sensor for detecting gas generated by deterioration of the insulator, and oxidation or oxidation of the conductor. It may be configured as a third gas sensor for detecting gas generated by arc discharge.

The exposure material 100 may not contain toxic halogen elements, and insulators such as wires may contain halogen elements to reduce the rate of dielectric breakdown. The first gas sensor may detect a hydrocarbon-based gas as a target, and the second gas sensor may detect a halogen-based gas as a target.

Since the conductor is oxidized by heat and moisture to release hydrogen gas and emits ozone by arc discharge, the third gas sensor can detect hydrogen gas or ozone.

Since the display material 100 may be composed of only carbon and hydrogen atoms, and a ready-made insulator may include carbon, hydrogen, and halogen elements, the first gas sensor may detect gas generated from the insulator.

The first gas sensor can also detect gas generated from an insulator, and the second gas sensor detects a gas different from a gas detected as a target by the first gas sensor. For example, the first gas sensor detects carbonization-based gas, and the second gas sensor detects halogen-based gas.

The sensor unit 320 can be attached or detached or deactivated for each gas sensor in consideration of the environment of the monitoring area, and the control unit 330 sets a reference concentration for determining the fire sign level for each gas sensor.

The control unit 330 may classify the fire sign levels into caution, danger, and very danger, and may classify them into more subdivided levels. The controller 330 may set a reference value or reference concentration for determining signs of electrical fire for each gas sensor. For example, the control unit 330 uses the first gas sensor for a caution or initial stage of an electric fire sign, uses the second gas sensor for a dangerous stage, and utilizes a third gas sensor for a very dangerous stage.

In the case of the first gas sensor, since it can detect the carbonization-based gas generated from the exposure material 100 and the insulator, the control unit 330 can set a reference concentration for the carbonization-based gas concentration, and the exposure material 100 It is possible to set the reference concentration for each of the insulator and For example, the control unit 330 utilizes the first gas sensor, and sets the fire sign level based on the gas concentration as caution (setting the reference concentration as a small amount), dangerous (setting the reference concentration as a weight), and very dangerous (setting the reference concentration as a weight). can be distinguished by setting the high amount). Setting the standard concentration to a small amount is to set the gas detection standard from the display material 100, and setting the standard concentration to the weight and high amount is to set the gas detection standard from the insulator.

The control unit 330 determines the level of the fire symptom by the gas generated from the fire symptom displaying material 100 or the insulator. The control unit 330 can determine the level of the fire sign in stages using the fire sign display material 100 and the insulator.

The control unit 330 uses the sensor unit 320 to determine the fire symptom level. More specifically, the control unit 330 compares the concentration of each gas included in the sensor data of the sensor unit 320 with a set reference concentration to determine the level of the fire sign.

The control unit 330 determines the level of the fire symptom by the gas generated from the fire symptom displaying material 100, the insulator or the conductor. The controller 330 can determine the level of the fire sign in stages using the fire sign display material 100, an insulator or a conductor.

5 shows a connection body for preventing electrical fires according to an embodiment of the present invention, FIG. 6 shows a connection body for preventing electrical fires according to another embodiment of the present invention, and FIG. 7 illustrates the present invention. It shows a cap for preventing electrical fires according to an embodiment of.

The exposure material 100 may be manufactured by being included in a connector 400 for connection between conductors, a cap 500 covering the conductors, or a pad attached to an electric device.

The connecting body 400 includes a body 410, a groove 420, and an exposing material 100. The body 410 is for connecting or fixing a conductor, and may have the same or similar properties as the conductor.

The groove 420 is formed at a set position of the body 410. For example, the groove 420 is formed on the outer circumferential surface of the body 410 as shown in FIG. 5 or formed on the upper surface of the body 410 as shown in FIG. 6 . The connecting body 400 may be a bolt or nut. The connection body 400 may be manufactured in the form of a terminal block.

The present invention can create an algorithm for determining the warning level indicating signs of electrical fire through the maximum allowable temperature for each part of the conductor, the type of synthetic resin, the combination ratio of synthetic resin and flame retardant, the area or thickness of the insulation material, and the result of the combustion test. And, it is possible to manufacture the optimized display material 100, and the algorithm can be applied to the control unit 330.

The present invention may include a plurality of display materials 100 having different reference temperatures and different target gases. For example, as shown in FIG. 6 , the exposing material 100 includes a first exposing material 100-1 and a second exposing material 100-2 having different melting points or reference temperatures. The first exposure material 100-1 may have a lower reference temperature than the second exposure material 100-2, and may have a reference temperature corresponding to the maximum permissible temperature of the conductor. For example, the reference temperature corresponds to the maximum permissible temperature or is higher than the maximum permissible temperature. The first exposing material 100-1 may have a lower melting point, mass, and gas generation amount than the second exposing material 100-2.

When the control unit 330 detects the target gas generated from the first exposure material 100-1, it can determine the initial level of the fire sign, and when detecting the target gas generated from the second exposure material 100-2, the fire It can be determined by the symptom risk level. The control unit 330 analyzes the amount of gas concentration generated in the first exposing material 100-1 and the second exposing material 100-2 to discriminate the warning level of the fire sign in more detail. Different target gases may be determined by the type of synthetic resin or the added flame retardant.

It can also be used as a visual inspection to find out the fire sign level of the first exposure material 100-1 and the second exposure material 100-2. For example, the operator can find out that the fire sign level is in the initial stage when the mass change occurs only in the first display material 100-1, and when the mass change occurs up to the second display material 100-2, the fire sign level It can be found that it is between this early and dangerous stage.

The fire sign display material 100 is formed on a conductor or insulator included in the monitoring target, and when heated to a reference temperature related to the maximum allowable temperature of the monitoring target, gas can be generated, and the gas is reduced in mass by the gas generation. Signs of fire are expressed by occurrence and mass loss.

The cap 500 shown in FIG. 7 may include a support 510 and a display material 100 . The support part 510 provides a function of supporting the exposed material 100 while being fixed to an insulator or conductor. The cap 500 may be mainly formed at an end of a wire or may be formed at a conductor connected to a terminal block.

The display material of the present invention can be manufactured in various forms, and can be manufactured in a form required for home appliances or industrial devices. For example, the display material is formed on a household power strip.

The present invention provides the display material 100 that generates gas when the standard temperature in consideration of the maximum permissible temperature of the conductor is exceeded, so that it is possible to accurately find out the signs of fire by gas detection, the disappearance state of the display material 100, or Workers can recognize signs of fire through the smell of gas.

The present invention includes a plurality of display materials 100 having different reference temperatures, the target gas generated from each display material 100 is different, and a warning level indicating signs of electrical fire based on the type of target gas. By discriminating, it is possible to further improve the accuracy of determining fire signs by gas detection.

In the present invention, by installing the display material 100 on the conductor of the electrical device, even if the sensor unit 320 or the control unit 330 is not provided, the operator can visually identify the display material 100 or identify the smell of the fire sign. level can be judged. For example, the worker visually identifies the disappearance of the display material 100 or recognizes the smell of gas from the display material 100, re-tightens the existing connector 400 and replaces it with a new display material 100, or replaces the existing connector 400 with a new connector 100. Remove the sieve 400 and replace it with a new connecting body 400.

According to the present invention, a worker can easily find the loose connector 400 through the naked eye or smell without a device such as a temperature sensor, and there is no need to use a pen for separate marking.

The control unit 330 may determine the warning level to control the electric device, and generate notification information for notifying the manager or server terminal of the warning level. For example, control of electric devices controls control means, and transmission of notification information uses communication protocols such as IEC 61850 or DNP 3.0. The control means is a power controller, switch or current breaker. For example, a current breaker is a fuse. Although fuses cannot be reused when blown, they are very inexpensive and provide a reliable current blocking operation, so they are used by many electrical workers.

Although the display material 100 of the present invention cannot be reused when deterioration or thermal decomposition occurs like a fuse, it can be manufactured at a very low cost, and can provide various tests such as visual inspection, odor inspection and gas inspection, and various inspections. Through this, it is possible to maximize the accuracy or efficiency of monitoring signs of electrical fires.

In the present invention, a cable or terminal block can be manufactured using a material included in the display material 100. For example, a cable or terminal block uses a synthetic resin composed of carbon and hydrogen atoms, and the sensor unit 320 detects a carbonized gas in consideration of selectivity or sensitivity.

The display material 100 may include a fragrance or odorant that is distinguished from the smell of carbonized gas or the smell of toxic gas of halogen elements.

The odorant may be a sulfur-free odorant without the aforementioned aroma or sulfur component. Sulfur-free odorants enhance the strength and physical properties of synthetic resins, are harmless to the human body, and have low corrosiveness to metals. According to the present invention, a smell is generated in the combustion process through a sulfur-free odorant, so that the operator can detect signs of an electrical fire by smell, and by generating hydrocarbon-based gas, the selectivity of the gas sensor can be improved, and the gas evaporation A change in the appearance of the display material 100 occurs so that the operator can visually detect signs of an electrical fire.

The sulfur-free odorant may be isovaleraldehyde or acrylate. Isovaleraldehyde is available naturally in over 180 plant species, including foods such as bananas, apples, carrots, cacao and coffee. Isovaleraldehyde is a substance used in the manufacture of amino acids, antiviral protection, central nervous system disease drugs or as an excipient.

Acrylates do not contain sulfur components and may generate a peculiar odor. Acrylates can be classified into methyl, ethyl, butyl, 2-ethylhexyl acrylate, acrylic acid, and methyl methacrylate. Since acrylate has transparency, UV stability, elongation, solvent resistance and water resistance, it is a material used for various purposes such as paints, fibers, adhesives, coating agents or inks. In particular, methyl acrylate forms a copolymer with acrylic ester monomers to provide a function of enhancing strength or physical properties of synthetic resins. The sulfur-free odorant may include alkyl isovalate, an ester-based organic compound, and alkyl acrylate or alkyl pyrazine, an acryl-based organic compound.

Conventionally, a discoloration pigment having a discoloration temperature range of 0 to 70° C. was coated on an insulator. However, conventionally, there is a problem in that it is difficult to use the discoloration pigment for the purpose of monitoring fire signs because the deterioration of the display material 100 may occur at about 80 ° C. or higher in consideration of the maximum allowable temperature of the insulator.

Conventionally, in order to widen the discoloration temperature range of the pigment, it was mixed with flame retardant additives such as halogen, but there is a problem in that gas corroding the conductor is generated during thermal decomposition, and other gases other than hydrocarbon-based gases are generated, reducing the selectivity of the gas sensor. There are problems that could be.

The display material 100 may include a thermochromic polymer that provides color change by heat. The thermochromic polymer may be referred to as a thermochromic layer. The thermochromic layer is to solve the problems of conventional color-changing pigments, and may be mixed with synthetic resin or formed in a set region of an insulating layer made of synthetic resin.

Thermochromic polymers are generally used to manufacture biosensors, and their main component is polydiacetylene, and they can provide very fast color change up to 200°C by introducing a peptide side chain into the polymer. Thermochromic polymers are irreversibly damaged when subjected to heat of 200 ° C or higher, and thermochromic properties no longer exist. Thermochromic polymers can provide color change at various temperature conditions in response to the amount of polydiacetylene.

Polydiacetylene has a molecular formula of C ₄ H ₂ and is composed of hydrogen and carbon atoms. When heated above the ignition temperature, polydiacetylene generates hydrocarbon-based gas and can be used to enhance physical properties of synthetic resins. The thermochromic polymer has a wider temperature range according to color change than a color-changing pigment, and has a range between a temperature at which deterioration of an insulator occurs and a temperature at which complete combustion occurs. Since the thermochromic polymer is composed of hydrogen and carbon atoms, it is possible to minimize the emission of gas related to corrosion of the conductor in case of incomplete combustion, and improve the selectivity of the first gas sensor for detecting a hydrocarbon-based target gas.

Synthetic resins and thermochromic polymers are composed of carbon and hydrogen atoms, and may generate hydrocarbon-based target gases during incomplete combustion. Odorants are also composed of carbon, hydrogen, and oxygen atoms, and may generate hydrocarbon-based target gases during incomplete combustion.

The present invention can manufacture an insulator containing the material of the display material 100, and the insulator can absorb moisture generated by combustion to further improve the sensitivity of a sensor for detecting corrosion or gas of a conductor. can include The absorbent may be a synthetic polymer material having a function of absorbing moisture, and is, for example, SAP (Super Absorbent Polymer), SAM (Super Absorbency Material), or AGM (Absorbent Gel Material), and is used as a diaper or sanitary napkin product. . The absorbent may also be a mixture comprising an acrylic acid polymer and a sodium salt that reacts with moisture to provide swelling.

The sensor unit 320 may further include a temperature/humidity sensor to correct concentration or detect an error of the gas sensor.

10: electrical facilities 100: display material
100-1: First exposure material 100-2: Second exposure material
300: monitoring device 310: case
320: sensor unit 330: control unit
400: connection body 410: body
420: groove 500: cap
510: support

Claims (6)

monitoring object including an insulator that insulates the conductor;
A fire sign displaying material 100 having a lower melting point than the insulator;
A sensor unit 320 having a gas detection function and
Including a control unit 330 that determines the level of fire signs with the gas generated from the fire sign expression material or the insulator, the control unit can determine the level of the fire sign in stages using the fire sign expression material and the insulator,
The insulator contains a halogen element,
The display material does not contain a halogen element and has a lower melting point than the insulator,
The display material contains carbon and hydrogen or includes carbon, hydrogen and oxygen, thereby minimizing the emission of gases related to toxicity and gases related to corrosion of conductors during incomplete combustion, and improving the selectivity of the sensor unit. Switchboard for fire protection. delete delete Monitoring objects including conductors and insulators;
A fire sign display material capable of generating gas by heat generated from the monitoring object;
A sensor unit equipped with a function of detecting gas generated from conductors, insulators, and fire sign display materials, and
Including a control unit that determines the level of the fire symptom using the sensor unit, the control unit can determine the level of the fire symptom based on the type of gas,
The insulator contains a halogen element,
The display material does not contain a halogen element and has a lower melting point than the insulator,
The conductor emits hydrogen gas when oxidation occurs by heat and moisture, and emits ozone when arc discharge occurs,
The display material contains carbon and hydrogen or contains carbon, hydrogen and oxygen, thereby minimizing the emission of gases related to toxicity and gases related to corrosion of conductors during incomplete combustion, improving the selectivity of the sensor unit,
The switchboard for preventing electrical fires, characterized in that the control unit allows the gas generated from the conductor to have a higher fire symptom level than the gas generated from the insulator. Conductors and insulators with different gases generated as targets;
A sensor unit provided with a plurality of sensors for detecting gas generated by oxidation of the conductor and arc discharge, and detecting gas generated by deterioration of the insulator; and
It includes a control unit capable of discriminating the level of fire signs based on the type of gas generated as a target,
The insulator contains a halogen element,
The conductor emits hydrogen gas when oxidation occurs by heat and moisture, and emits ozone when arc discharge occurs,
The control unit ensures that the gas generated from the conductor has a higher fire symptom level than the gas generated from the insulator,
The switchboard for preventing electrical fires, characterized in that the sensor unit is provided with a sensor deactivation function in consideration of the environment of the monitoring area. delete

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