JPH0970445A - Electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress smoke generation or firing and to prevent a smoke component from influencing other healthy electric apparatuses by detecting the temperature of the electric apparatus by a temperature sensor and supplying inert gas from an inert gas supply means to the inside of a container housing the electric apparatus when the detected temperature exceeds a prescribed value. SOLUTION: The temperature sensors 25 and 26 are installed for the electric apparatuses 23 and 24 respectively housed in case bodies 21 and 22. The electric apparatuses 23 and 24 housed in the respective case bodies 21 and 22 are independently or cooperatively operated. At the time, for instance, when a control means 27 judges the temperature of the electric apparatus 23 detected by the temperature sensor 25 as abnormal heat generation, a gas supply selection means 29 is commanded and the inert gas of a cylinder 28 is supplied through a gas supply port 21a to the case body 21. Thus, the smoke generation or the generation of flame from the electric apparatus when a high temperature section is generated by the abnormal heat generation is suppressed. A mixed gas kind of the smoke component and the inert gas generated inside the case body 21 is discharged from a discharge port 21b through a duct or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device for preventing accidents due to abnormal overheating of electric equipment.

[0002]

2. Description of the Related Art FIG. 4 shows, for example, Japanese Patent Publication No. 55-43720.
The present invention relates to a fire extinguisher described in Japanese Patent Publication No. FIG.
In, the infrared rays of the object 1 are guided to the first infrared detecting element 3 through the light receiving lens 2. Then, the room temperature is guided to the second infrared detecting element 5 through the light receiving lens 4. further,
The electric signals obtained by the two infrared detection elements 3 and 5 are input to the comparison circuit 7 via the differential amplifier 6. The comparison circuit 7 compares the reference voltage 8 with the output of the differential amplifier 6, and when the output of the differential amplifier is larger than the reference voltage 8, the switch 9
The actuating valve 10 is driven by, for example, a non-combustible gas such as halon gas or carbon dioxide gas, or a cylinder 11 containing a high-pressure fire extinguishing liquid is injected through the nozzle 12 to the object 1 to automatically extinguish the fire.

[0003]

Since the conventional automatic fire extinguisher is constructed as described above, when the object to be extinguished is an electric device, the smoke component generated by the fire is a high voltage of the electric device. There is a problem that the accident may spread due to the deterioration of the electric insulation property when attached to the applied portion.

[0004]

According to a first aspect of the present invention, there is provided an electric device in which an electric device is housed in a plurality of closed containers, the temperature of the electric device is detected by a temperature sensor, and the temperature is detected. When the temperature detected by the sensor exceeds a predetermined value, the inert gas is supplied from the inert gas supply means into the container accommodating the electric device that exceeds the predetermined value.

According to another aspect of the present invention, there is provided an electric device in which an electric device is housed in each of a plurality of closed containers, and each container is supported by an insulating member. The temperature sensor detects the temperature of the electric device, and when the temperature detected by the temperature sensor exceeds a predetermined temperature, a hollow part of the insulating member is placed inside the container containing the electric device whose temperature exceeds the predetermined temperature. The inert gas is supplied from the inert gas supply means via the above.

According to a third aspect of the present invention, in the electric device according to the second aspect, the temperature sensor indirectly measures the temperature of the electric device by measuring the temperature of the container.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. FIG. 1 is a configuration diagram of the first embodiment. In FIG. 1, reference numerals 21 and 22 denote closed or semi-closed enclosures, which are provided with inert gas supply ports 21a and 22a and exhaust ports 21b and 22b. 23 and 24 are electric devices housed in housings 21 and 22, respectively, and 25 and 26.
Is a temperature sensor for detecting the temperature by infrared rays of the electric devices 23 and 24, and 27 is a control means to which the detection signals of the temperature sensors 25 and 26 are input, which indicates which of the electric devices 23 and 24 has caused abnormal heat generation. After confirmation, the air supply selection means 29, which will be described later, is instructed. A cylinder 28 stores an inert gas such as halon gas, carbon dioxide gas, and nitrogen gas. Reference numeral 29 is a supply air supply means connected to the cylinder 28, and supplies the inert gas of the cylinder 28 to the housing in which abnormal heat generation has been detected in response to a command from the control means 27. The inert gas supply means 30 is composed of 27 to 29.

Next, the operation will be described. In FIG. 1, the electric devices 23 normally housed in the housings 21 and 22 are
24 are operating independently or jointly. In this case, for example, when the control unit 27 determines that the temperature of the electric device 23 detected by the temperature sensor 25 is abnormal heat generation, the air supply selection unit 29 is instructed to supply the inert gas of the cylinder 28 to the air supply port 2.
It is supplied to the housing 21 via 1a. A large amount of local molecular materials such as insulating coating materials and insulating varnishes are used in electric equipment. However, when an inert gas is introduced into the housing 21, smoke is generated even if a high temperature area is generated due to abnormal heat generation. Or suppress the generation of flames. The smoke components generated in the housing 21 and the mixed gas with the inert gas are discharged from the exhaust port 21b through a duct (not shown) or the like so as not to affect the surroundings. In addition, when the electric device 24 abnormally generates heat, the inert gas is supplied to the housing 22 through the air supply port 22a by the air supply selection means 29.

Embodiment 2 FIG. 2 is a configuration diagram of the second embodiment. In FIG. 2, 27 to 29 are the same as those in the first embodiment. 31 is a lower structural material, 32 is an upper structural material arranged in parallel with the lower structural material 31, 33-36
Is an insulator or an FRP insulating member fixed by a fixture 37 between both structural members 31 and 32, and has a hollow portion whose upper part is closed. Numerals 38 to 43 are closed or semi-closed containers that contain thyristor modules. Air supply ports 38a to 43a and exhaust ports 38b to 43b are provided. The exhaust ports 38b to 43b are opened at positions apart from other structures so as not to contact the other structures. Reference numeral 44 indicates each container 38 to 43 and each insulating member 33.
To 36 are fixed members, 45 to 50 are insulating members 33 to
It is a connecting pipe made of an insulating material that connects the hollow portion of 36 and the inside of each of the containers 38 to 43. The thyristor valve 51 is composed of 31 to 50. Reference numeral 52 denotes a temperature sensor using infrared rays, which measures the temperature of each container 38 to 43. The inert gas supply means 53 is composed of 27 to 29 and 52. Reference numerals 54 and 55 are pipes that connect the air supply selecting means 29 and the hollow portions of the insulating members 34 and 35, respectively.
Deliver 8 inert gases.

Next, the operation will be described. In FIG. 2, containers 38 to 43 accommodating thyristor modules each composed of a thyristor element and an element of an auxiliary circuit are further stacked via insulating members 33 to 36 to form a thyristor valve 51. During operation of the thyristor valve 51, the temperature sensor 52 measures the intensity of infrared rays radiated from the surfaces of the containers 38 to 43 and monitors the temperature distribution. Therefore, when the temperature sensor 52 detects an abnormal heat generation in a high temperature area, for example, the container 39, the air supply selecting means 29 is activated by a command from the control means 27, and the inert gas in the cylinder 28 is insulated from the insulating member 34 via the pipe 54. To send to.
Further, the inert gas is supplied from the insulating member 34 into the container 39 through the connecting pipe 46 to prevent smoking or ignition in the container 39. The inert gas after extinguishing the fire is discharged from the exhaust port 39b. At the same time, the inert gas is also fed to the respective containers 38, 40, but as it is, the respective exhaust ports 38b, 40
b.

As described above, smoke or ignition is prevented in the container 39 that has generated abnormal heat, and the inert gas used therefor does not come into contact with other thyristor modules. You can

Embodiment 3. FIG. 3 is a configuration diagram of the third embodiment. In FIG. 3, 27 to 29 are the same as those in the first embodiment, and 31 to 37, 44, 52 to 55 are the same as those in the second embodiment. Reference numerals 56 to 61 denote thyristor modules each composed of a thyristor element and an element of an auxiliary circuit, which are fixed to the insulating members 33 to 36 by a fixing tool 44. Reference numerals 62 and 63 denote closed or semi-closed containers, which are thyristor modules 56 to 58 and 59 to.
61 are housed respectively. Reference numerals 64 and 65 are connecting pipes made of an insulating material that connect the hollow portions of the insulating members 34 and 35 and the lower portions of the containers 62 and 63, respectively, and 66 and 67 are exhaust pipes connected to the upper portions of the containers 62 and 63, respectively. . Note that 31
˜37,44,56˜67 constitute a thyristor valve 68.

Next, the operation will be described. In FIG. 3, the thyristor modules 56 to 61 are connected to the insulating members 34 to
A thyristor valve 68 is formed by stacking the thyristor valves 68. During operation of the thyristor valve 68, the temperature sensor 52 measures the intensity of infrared rays radiated from the surface of each container 62, 63 and monitors the temperature distribution. Therefore, when the temperature sensor 52 detects an abnormal heat generation in a high temperature area, for example, the container 62, the air supply selection means 29 is activated by a command from the control means 27, and the inert gas in the cylinder 28 is insulated from the insulating member 34 via the pipe 54. To send to. Further, the inert gas is supplied from the insulating member 34 into the container 62 via the connecting pipe 64 to prevent smoking or ignition in the container 62.
The extinguished inert gas is discharged from the exhaust pipe 66 so as not to come into contact with the structure such as the insulating member 33.

As described above, smoke or ignition is prevented in the abnormally heated container 62, and the inert gas used therefor does not come into contact with other structures, so that the influence on the electrical insulation characteristics can be avoided. it can.

[0015]

According to the first aspect of the present invention, when the electric device abnormally generates heat and exceeds a predetermined temperature, smoke or ignition is suppressed by supplying an inert gas into the container accommodating the electric device. Therefore, it is possible to prevent the smoke component from affecting other healthy electric devices.

According to the second aspect of the present invention, when the electric device abnormally heats up and exceeds a predetermined temperature, it is inactive in the container accommodating the electric device through the hollow portion of the insulating member supporting the electric device. By supplying gas, smoke or ignition is suppressed, so that it is possible to prevent smoke components from affecting other healthy electric devices.

According to the invention of claim 3, in the electric device of claim 1 or 2, the temperature of the electric device is indirectly measured through a container and an inert gas is supplied into the container. Smoke or ignition can be suppressed.

[Brief description of drawings]

FIG. 1 is a configuration diagram according to a first embodiment.

FIG. 2 is a configuration diagram according to a second embodiment.

FIG. 3 is a configuration diagram according to a third embodiment.

FIG. 4 is a configuration diagram of a conventional fire extinguisher.

[Explanation of symbols]

21,22,38-43,62,63 container, 23,2
4 electrical equipment, 25, 26, 52 temperature sensor, 30,
53 Inert gas supply means, 33-36 Insulation member.

Claims (3)

[Claims] 1. In an electric device in which electric equipment is housed in a plurality of closed containers, the temperature of the electric equipment is detected by a temperature sensor, and when the detected temperature of the temperature sensor exceeds a predetermined value, An electric device, characterized in that an inert gas is supplied from an inert gas supply means into the container containing the electric device exceeding a predetermined value. 2. An electric device in which an electric device is housed in each of a plurality of closed containers, and each container is supported by an insulating member, wherein a hollow portion connected to the inside of the container is formed in the insulating member, The temperature of the electric device is detected by a temperature sensor, and when the detected temperature of the temperature sensor exceeds a predetermined temperature, the hollow portion of the insulating member is inserted into the container containing the electric device whose temperature exceeds the predetermined temperature. An electric device characterized in that an inert gas is supplied from an inert gas supply means. 3. The electric device according to claim 1, wherein the temperature sensor indirectly measures the temperature of the electric device by measuring the temperature of the container.