CN111095702A - Switchboard and arc energy interruption device - Google Patents
Switchboard and arc energy interruption device Download PDFInfo
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- CN111095702A CN111095702A CN201880059129.6A CN201880059129A CN111095702A CN 111095702 A CN111095702 A CN 111095702A CN 201880059129 A CN201880059129 A CN 201880059129A CN 111095702 A CN111095702 A CN 111095702A
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- Prior art keywords
- internal
- cover
- vent
- ventilation
- arc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The distribution board (1) is provided with a metal shell (3). The internal separator (7) is disposed at a position spaced apart from a back plate (4) forming a part of the metal case (3) by a predetermined interval, and a decompression space (10) is formed between the internal separator (7) and the back plate (4). A ventilation channel (6) is provided on the ventilation opening (2) of the back plate (4), and an air intake duct (5) is provided outside the back plate (4) to cover the ventilation opening (2). An arc energy interruption means (11) is provided to cover the internal vent (7a) formed in the internal divider (7). The arc energy interruption device (11) is provided with a box-shaped internal ventilation member (12), a cover (14) capable of covering a slit (12b) of the internal ventilation member (12), and a support member (13) for supporting the cover (14) on the internal ventilation member (12). When an internal arc fault occurs, the support member (13) is deformed, and the cover (14) covers the slit (12b) of the internal ventilation member (12).
Description
Technical Field
The present invention relates to a switchboard. In particular, the present invention relates to the structure of the air intake of a closed electrical panel.
Background
A switchboard is, for example, an assembly device in which electrical devices such as switches, buses and connecting conductors are accommodated in a grounded metal box. In order to suppress a temperature rise due to heat generation of the equipment, for example, the distribution board is provided with an intake port for introducing outside air in the vicinity of a lower portion of the periphery of the metal box, and an outlet portion for discharging the introduced outside air is provided at a top portion thereof.
In the case of an internal arc accident in the switchboard, the occurrence of the arc may cause an increase in pressure in the switchboard, followed by the ejection of arc gas (a generic term for gases containing air expanded by the arc, pyrolysis products such as metal powder formed by arc melting of parts and bushings, etc.) from the inlet or outlet of the metal box.
In some cases, the worker who performs maintenance and inspection may be on the front side of the metal box. Therefore, it is necessary to prevent the arc gas from being discharged from the gas inlet formed on the front side of the metal case. Therefore, a protection plate that moves by an increase in pressure in the metal case is provided at the air inlet formed on the front side of the metal case. When an arc occurs, the protection plate closes the gas inlet and maintains the state until the pressure is reduced to prevent the arc gas from being ejected from the gas inlet (for example, patent publication 1).
The arc gas occurring in the event of an internal arc accident does not necessarily push the protection plate in the direction of closing the gas inlet. For example, not only the shield plate may be horizontally pressed, but also the arc gas may flow around from above and below the shield plate. If the closing of the shield plate is insufficient or the arc gas flows around from above and below the shield plate, there is a risk that the arc gas is ejected from the gas inlet to the outside of the metal case.
Prior art publications
Disclosure of the patent
Patent publication 1: JP patent application publication 2009-017756
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique of preventing or suppressing the ejection of arc gas from an intake port when an internal arc accident occurs in a switchboard.
A power distribution panel of an aspect of the present invention for achieving the above object includes:
a case housing electrical equipment;
an inner partition located inside the cabinet and disposed at a predetermined distance from an outer panel forming the cabinet;
a vent hole formed in the outer panel and introducing external air into the case;
an internal vent formed in the inner partition and introducing external air into the case; and
an arc energy barrier capable of sealing the internal vent when an internal arc accident occurs in the tank,
wherein, the outer plate and the inner partition plate form a pressure release space.
In the above power distribution panel, a power distribution panel of another aspect of the present invention for achieving the above object includes:
an intake duct formed outside the outer plate of the case and covering the vent hole; and
a ventilation channel formed at the ventilation port,
wherein the ventilation passage includes a guide plate which guides the airflow upward toward the outside of the case,
wherein the intake port of the intake section duct is formed at a lower end portion of the intake section duct.
In the above-described switchboard, another aspect of the present invention for achieving the above-described object is a switchboard in which the arc energy blocking device includes:
a box-shaped internal ventilation member provided to protrude toward the inside of the inner partition to cover the internal ventilation port, an opening portion for introducing external air into the box body being formed in an end face on one side of the protrusion of the internal ventilation member;
a cover capable of sealing the opening of the internal ventilation component; and
a support member for supporting the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and an end surface on which the internal ventilation member protrudes,
wherein the support portion is deformed according to an increase of an internal pressure of the case,
wherein the opening of the internal ventilation member is closed by the cover according to the deformation of the support portion.
To achieve the above object, a power distribution panel according to another aspect of the present invention includes:
a case housing electrical equipment;
an outer plate forming a box body;
a vent hole formed on the outer panel and introducing external air into the case;
an intake duct formed on an outer side of an outer plate of the case and covering the vent; and
a ventilation channel formed at the ventilation port,
wherein the ventilation passage includes a guide plate which guides the airflow upward toward the outside of the case,
wherein the intake port of the intake section duct is formed at a lower end portion of the intake section duct.
An arc energy blocking apparatus of an aspect of the present invention for achieving the above object is formed at a vent hole through which external air flowing in a switchboard passes, the arc energy blocking apparatus being capable of closing the vent hole when an internal arc accident occurs within the switchboard and including:
a box-shaped internal ventilation member formed with a first opening portion connected to the ventilation port;
a second opening portion formed on a surface opposite to the surface of the first opening portion on which the internal ventilation member is formed;
a cover capable of closing the second opening; and
a support member for supporting the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and a surface in which the second opening portion is formed,
wherein the support part deforms according to the increase of the internal pressure of the switchboard,
wherein the second opening is closed by the cover according to the deformation of the support portion.
The above invention makes it possible to prevent or suppress the ejection of arc gas from the intake port.
Drawings
Fig. 1 is an exploded sectional view showing an outline of a metal box of a distribution board according to an embodiment of the present invention;
fig. 2 is an exploded sectional view of a main part of a distribution board according to an embodiment of the present invention;
fig. 3 is an exploded perspective view of a main part of the switchboard according to the embodiment of the present invention;
fig. 4 is an enlarged cross-sectional view of a main portion of the distribution board according to the embodiment of the present invention;
fig. 5 is an explanatory view illustrating a cover supporting state of the distribution board according to the embodiment of the present invention;
fig. 6 is an explanatory view explaining a flow of external air flowing into the distribution board according to the embodiment of the present invention; and
fig. 7 is an explanatory view explaining a flow of an air current at the time of occurrence of an internal arc accident of the switchboard according to the embodiment of the present invention.
Detailed Description
A distribution board and an arc energy blocking apparatus according to an embodiment of the present invention are explained in detail based on the accompanying drawings.
As shown in fig. 1, a distribution board 1 according to an embodiment of the present invention is provided with a metal box 3 (box body, the same applies hereinafter) formed with a vent 2. Electrical equipment (not shown in the figure) such as switches, buses and connecting conductors are received in the metal box 3.
The vent 2 is formed, for example, at a lower portion of a back plate 4 (outer plate, hereinafter the same) forming a part of the metal case 3. An intake duct 5 is provided outside the back plate 4 so as to cover the vent port 2. The intake duct 5 is formed at a lower end thereof with an intake port 5a, and draws in outside air from the intake port 5 a. Furthermore, the vent 2 is provided with a vent passage 6.
As shown in fig. 2, the ventilation passage 6 is provided with a plurality of opening portions 6a, which are formed in the form of slits and allow the outside air to flow therethrough, and guide plates 6b, which are provided at the lower end portions of the respective opening portions 6 a. The opening portion 6a has, for example, a rectangular shape long in the horizontal direction and is aligned in the vertical direction. At least one row of the openings 6a is formed. The guide plate 6b is provided, for example, to be inclined upward in a direction from the lower end portion of the opening portion 6a toward the outside of the metal case 3, thereby guiding the arc gas ejected from the metal case 3 upward. Although not shown in fig. 1 and 2, pyrolysis products caused by the arc are prevented from being directly released to the outside of the metal case, for example, by providing a stainless steel mesh (mesh of IP 4X) having an open pore size of 1.0mm or less at the ventilation passage 6 (or the vent 2). IP4X is a dustproof grade for electrical equipment and the like, and exhibits a protective ability in a range that can prevent solid matter having a diameter of 1.0mm or more from passing therethrough.
In the metal box 3, the inner partition 7 is disposed at a position at a predetermined distance from the back plate 4. The inner partition 7 has, for example, almost the same size as the back plate 4, and is disposed opposite to the back plate 4. In practice, an insulator fixing plate 9 for fixing an insulator 8 is provided on the metal middle box 3 opposite to the back plate 4, above and below which the inner partition plate 7 is provided. In this way, the inner partition plate 7 may be formed not only of one plate but also of a plurality of plates using the insulator fixing plate 9. Although not shown in the drawings, each side end of the inner partition 9 is provided with a fixing portion extending from the end in a direction toward the outside of the metal case 3. The fixing portion and the side plate of the metal case 3 are fixed together by a bolt or the like, thereby fixing the inner partition 7 in the metal case 3. The inner partition 7 is arranged away from the back plate 4 to form a pressure relief space 10 between the inner partition 7 and the back plate 4. The pressure relief space 10 is a space that communicates with the outside of the metal case 3 through the intake duct 5 and the vent 2. This space communicates with the space in which the electrical equipment is disposed through the internal vent 7a and the internal vent member 12, which will be described in detail below. The size and the arrangement position of the inner partition 7 are not limited to this embodiment as long as the pressure release space 10 can be formed. Further, as the pressure relief space 10 becomes larger, the arc gas pressure relief effect becomes higher.
An internal vent 7a is formed at the lower portion of the inner partition 7. On the inner side of the inner partition 7 (the side of the space in which the electric equipment is provided), an arc energy blocking device 11 is provided at a portion where the inner vent 7a is formed.
When an internal arc accident occurs in the switchboard 1, the arc energy blocking device 11 prevents the arc gas from being ejected from the internal vent 7 a. The arc energy barrier 11 is provided with an inner breather member 12, a support member 13, and a cover 14.
As shown in fig. 3, the internal vent member 12 is provided inside the inner partition 7 to cover the internal vent 7 a. The internal ventilation member 12 is, for example, rectangular parallelepiped box-shaped, and is fixed to the inside of the inner partition 7 by bolts or the like so as to cover the internal ventilation opening 7 a. That is, the internal ventilation member 12 is provided so as to protrude from the inner partition 7 into the metal case 3. The internal ventilation member 12 has an opening 12a connected to the internal ventilation opening 7a formed on the outer side (the side opposite to the internal partition) of the metal box 3. In addition, the internal ventilation member 12 is formed with a slit 12b on an end face (a surface on a side of a space in which the electric equipment is provided, or a surface opposite to the surface on which the opening 12a is formed) protruding into the metal case 3, for introducing external air into the metal case 3. The slits 12b may have any shape as long as they can introduce external air into the metal case 3. For example, the internal vent member 12 is formed with two-stage vertically long slits 12b arranged in the horizontal direction. The internal venting member 12 is provided with a lid 14 by means of a support member 13.
The lid 14 is a member capable of closing the slit 12b formed in the internal ventilation member 12. The cover 14 is provided with a cover portion 14a capable of closing the slit 12b formed in the internal ventilation member 12, a pair of supported portions standing from the upper and lower ends of the cover portion 14a, and an edge portion 14c provided at the end of the supported portion 14 b.
As shown in fig. 4, the cover 14 is supported by the support member 13 with the main surface (cover portion 14a) of the cover 14 being a predetermined distance from the surface on which the slit 12b of the interior ventilation member 12 is formed. The fixing portion 13b of the support member 13, which will be described in detail later, is fixed to the supported portion 14b of the cover 14 by bolts or the like. The length of the supported portion 14b is substantially the same as the thickness of the internal ventilation member 12 (the portion protruding from the inner partition 7). When an internal arc accident occurs in the metal case 3, the cover 14 is brought into contact with the surface where the slit 12b of the internal venting member 12 is formed (and/or with the internal partition 7) to block the movement of air to the outside of the metal case 3. Further, as shown in fig. 3, a pair of cover support members 15 are provided near the side end portions of the cover 14 to sandwich the cover 14, thereby preventing the cover 14 from falling.
As shown in fig. 4, the pair of support members 13 are disposed above and below the inner vent member 12 to support the cover 14. The support member 13 is provided with a fixing portion 13a to be fixed to the internal breather member 12, a fixing portion 13b to be fixed to the cover 14, and a bearing portion 13c to be provided between the fixing portions 13a, 13 b.
The fixing portion 13a is a plate-shaped member fixed to the upper surface or the lower surface of the internal breather member 12 by bolts or the like, and is provided to extend from one end of the supporting portion 13c in a direction toward the internal partition 7.
The fixing portion 13b is a plate-like member fixed to the supported portion 14b of the cover 14 by bolts or the like, and is provided to extend from the other end of the supporting portion 13c in a direction opposite to the extending direction of the fixing portion 13 a.
As shown in fig. 5, a pair of the supporting portions 13c is provided between the fixing portion 13a and the fixing portion 13 b. The support portion 13c is provided to form a space between the fixed portion 13a and the fixed portion 13b so that the flow of the outside air can be allowed between the fixed portion 13a and the fixed portion 13 b. Any arrangement of the support portion 13c may be provided as long as the outside air is allowed to flow between the fixed portion 13a and the fixed portion 13 b. For example, at least three support portions 13c may be provided between the fixing portion 13a and the fixing portion 13 b. Further, as mentioned in detail below, the support member 13 is a member having rigidity to support the cover 14 and being deformable in accordance with an increase in pressure in the metal case 3.
As shown in fig. 3, the cover support member 15 is provided to stand on the inner side of the inner partition 7. By sandwiching the lid 14 between the pair of lid support members 15, the lid 14 is supported so as to be slidable in a direction toward the inner vent member 12. The cover support member 15 is provided at one end thereof with a fixing portion 15a, the fixing portion 15a being fixed to the inner partition 7. Further, the cover support member 15 is provided with an engaging portion 15b at the other end. The engaging portion 15b is provided to extend from an end of the cover support member 15 in a direction toward the opposite cover support member 15. The engagement of the lid portion 14a of the lid 14 with these engaging portions 15b prevents the falling of the lid 14 disposed between the lid support members 15.
Next, referring to fig. 6 and 7, the movement of gas in the distribution board 1 according to the embodiment of the present invention is explained in detail.
As shown in fig. 6, in a normal condition, external air is sucked into the distribution board 1 from the air inlet 5a of the air inlet portion duct 5 to cool the electric equipment (not shown in the figure) installed in the interior of the distribution board 1. As shown by the arrows in the drawing, the outside air sucked from the air inlet 5a of the air intake duct 5 passes through the opening portion 6a of the ventilation passage 6, the pressure release space 10, and the internal ventilation member 12, and then flows into the space where the equipment is mounted from between the edge portion 14c of the cover 14 and the internal partition 7. Then, the outside air drawn into the inside of the distribution board 1 through the ventilation path passes through the vicinity of the electrical equipment in the metal box 3 to cool the electrical equipment, and is then discharged from a vent hole (not shown in the figure) formed in the top of the distribution board 1.
In the case where an internal arc accident occurs in the switchboard 1, an arc is generated and the internal pressure of the switchboard 1 increases.
As shown in fig. 7, when the internal pressure of the distribution board 1 increases, the pressure thereof is applied to the cover 14. When pressure is applied to the cover 14, the support member 13 deforms. That is, the cover 14 is moved in a direction toward the inner vent member 12 by arc gas generated by an internal arc accident, and then the cover 14 closes the slit 12b formed in the inner vent member 12. Specifically, the lid portion 14a of the lid 14 is brought into contact with the protruding end face of the internal vent member 12 to close the slit 12b of the internal vent member 12 by the lid 14, thereby preventing the arc gas from being ejected from the internal vent 7a into the pressure relief space 10 (eventually, from being ejected from the intake port 5a of the intake section duct 5 to the outside of the metal case 3). Further, the edge portion 14c of the cover 14 is brought into contact with the inner partition 7 to prevent the arc gas from being ejected from the internal port 7a into the pressure relief space 10 (eventually, from being ejected from the inlet port 5a of the inlet portion duct 5 to the outside of the metal case 3).
If the arc gas has been ejected from the internal vent 7a, the pressure of the arc gas is released in the pressure release space 10 because the pressure release space 10 is provided between the inner partition 7 and the back plate 4. Therefore, the energy of the arc gas injected from the intake opening 5a of the intake-portion duct 5 to the outside of the metal case 3 is reduced.
Further, the arc gas injected from the vent holes 2 formed in the back plate 4 is guided upward in the intake portion duct 5 by the guide plate 6b provided at the ventilation passage 6. The arc gas ejected from the gas vent 2 is thus guided upward in the gas intake portion duct 5, and then ejected from the gas intake port 5a formed at the lower end portion of the gas intake portion duct 5. Thus, the energy of the arc gas ejected from the inlet port 5a of the inlet duct 5 is reduced. Further, the provision of the stainless steel net at the vent 2 prevents high-temperature particles having high kinetic energy from being directly discharged to the outside of the switchboard 1.
That is, the distribution board 1 has a structure capable of preventing or suppressing the arc gas generated at the time of an internal arc accident from being ejected from the vent port 2 (or the inlet port 5 a). This makes it possible to protect the safety of the personnel approaching the switchboard 1.
As described above, the distribution board 1 according to the embodiment of the present invention can release the pressure of the arc gas by providing the pressure release space 10 between the inner partition 7 and the back plate 4 even in the case where the arc gas has been ejected from the internal vent 7a after passing through the arc energy blocking means 11. Therefore, the pressure of the arc gas ejected from the inlet port 5a of the inlet duct 5 can be reduced. Further, providing the pressure relief space 10 reduces the pressure to the back plate 4, thereby suppressing gas from being ejected from the gaps between the bolts that fix the back plate 4. Therefore, the fastening distance of the bolts fixing the back plate 4 can be increased. This can reduce the cost of the switchboard 1. Further, since the gas pressure is released by the pressure release space 10, the back plate 4 can be made into the outermost cover having the thinnest thickness and being inexpensive.
Further, providing the arc energy blocking means 11 makes it possible to prevent the arc gas from being ejected to the outside from the gas inlet 5a of the metal case 3. That is, the cover 14 is supported by the support member 13 deformed by the arc gas. Thus, the cover 14 can cover the slit 12b of the inner vent member 12 when an internal arc accident occurs. In particular, the cross section of the support member 13 is formed in a Z-shape. Thereby, the cover 14 can be surely moved in the direction toward the internal ventilation member 12 by the deformation of the support member 13.
Further, the ventilation passage 6 and the intake portion duct 5 are provided so that the arc gas collides in the intake portion duct 5. This makes it possible to reduce the energy of the arc gas discharged from the gas inlet 5a of the gas inlet portion duct 5. Further, the arc gas is guided upward in the inlet duct 5 by the ventilation passage 6, and then discharged from the bottom of the inlet duct 5. This lengthens the flow path of the arc gas, and can lower the temperature of the arc gas discharged from the gas inlet duct 5.
As described above, the distribution board and the arc energy blocking apparatus of the present invention have been explained by showing a specific embodiment, but the distribution board and the arc energy blocking apparatus of the present invention are not limited to this embodiment. Appropriate modifications can be made within a range not to impair the characteristics thereof. The modified contents also belong to the technical scope of the present invention.
For example, it is also possible to manufacture a switchboard separately provided with a part of the technical characteristics of the switchboard according to an embodiment of the invention (internal partition 7, arc energy blocking means 11, ventilation channel 6, intake portion duct 5, etc.). In that case, some of the advantageous effects of the switchboard according to the embodiment of the present invention can be obtained. In the case where the distribution board is provided with only the inner partition 7, the following aspect may be made: the protection plate of the conventional switchboard is used as an arc energy blocking means to close the internal vent 7 a.
In the description of the present embodiment, the arc energy blocking device 11 (the inner ventilation member 12, the cover 14, and the like) is provided on the inner partition 7, but the arc energy blocking device 11 may be provided on the back plate 4. Further, the arc energy blocking means 11 may be provided on a partition plate (a portion on which a vent hole of the partition plate is formed) partitioning the inside of the distribution board.
In the present embodiment, the ventilation port 2 is formed in the back plate 4 forming the metal box 3, but the ventilation port 2 may be formed in any outer plate (any one of outer plates standing to surround the distribution board 1) forming the front plate, the side plate, and the back plate 4 of the metal box 3. Further, the inner partition 7 is not limited to being provided so as to oppose the back plate 4, but may be provided so as to oppose an outer plate in which the vent hole is formed. However, the inspector may be on the front side of the switchboard 1. Therefore, by forming the air vent 2 in the back plate 4 of the distribution board 1, the inspector can be protected more safely.
Further, not only the support members 13 are disposed at the upper and lower ends of the inner vent member 12, but they may be disposed at both side ends of the inner vent member 12. In this case, the cover support members 15 are provided in the vicinity of both the upper end portion and the lower end portion.
The claims (modification according to treaty clause 19)
1. A power panel, comprising:
a case housing electrical equipment;
an inner partition located inside the cabinet and disposed at a predetermined distance from an outer panel forming the cabinet;
a vent formed on the outer panel and introducing external air into the case;
an internal vent formed on the inner partition and introducing external air into the tank; and
an arc energy barrier capable of sealing the internal vent when an internal arc accident occurs within the tank,
wherein a pressure release space is formed by the outer plate and the inner partition plate,
characterized in that said arc energy blocking means comprises:
a box-shaped internal ventilation member provided so as to protrude toward the inside of the internal partition to cover the internal ventilation port, an opening portion for introducing external air into the box body being formed in an end face on one side of the protrusion of the internal ventilation member;
a cover capable of closing the opening of the internal ventilation member; and
a support member that supports the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and the end face on which the internal vent member protrudes,
wherein the support portion is deformed according to an increase in internal pressure of the case,
wherein the opening portion of the internal ventilation member is closed by the cover according to deformation of the support portion.
2. The panelboard of claim 1, further comprising:
an intake duct formed on an outer side of the outer panel of the case and covering the vent; and
a ventilation passage formed at the ventilation port,
wherein the ventilation passage includes a guide plate that guides the airflow upward toward the outside of the case,
wherein the intake port of the intake section duct is formed at a lower end portion of the intake section duct.
3. An arc energy blocking device formed at a vent hole through which external air flowing in a switchboard passes, the arc energy blocking device being capable of closing the vent hole when an internal arc accident occurs in the switchboard,
characterized in that said arc energy blocking means comprises:
a box-shaped internal ventilation member formed with a first opening portion connected to the ventilation port;
a second opening portion formed in a surface opposite to a surface of the first opening portion in which the internal ventilation member is formed;
a cover capable of closing the second opening; and
a support member that supports the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and a surface in which the second opening portion is formed,
wherein the support portion is deformed according to an increase in internal pressure of the distribution board,
wherein the second opening portion is closed by the cover according to deformation of the support portion.
Claims (5)
1. A power panel, comprising:
a case housing electrical equipment;
an inner partition located inside the cabinet and disposed at a predetermined distance from an outer panel forming the cabinet;
a vent formed on the outer panel and introducing external air into the case;
an internal vent formed on the inner partition and introducing external air into the tank; and
an arc energy barrier capable of sealing the internal vent when an internal arc accident occurs within the tank,
wherein a pressure relief space is formed by the outer plate and the inner partition plate.
2. The panelboard of claim 1, further comprising:
an intake duct formed on an outer side of the outer panel of the case and covering the vent; and
a ventilation passage formed at the ventilation port,
wherein the ventilation passage includes a guide plate that guides the airflow upward toward the outside of the case,
wherein the intake port of the intake section duct is formed at a lower end portion of the intake section duct.
3. The panelboard of claim 1 or 2, wherein the arc energy blocking device comprises:
a box-shaped internal ventilation member provided so as to protrude toward the inside of the internal partition to cover the internal ventilation port, an opening portion for introducing external air into the box body being formed in an end face on one side of the protrusion of the internal ventilation member;
a cover capable of closing the opening of the internal ventilation member; and
a support member that supports the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and the end face on which the internal vent member protrudes,
wherein the support portion is deformed according to an increase in internal pressure of the case,
wherein the opening portion of the internal ventilation member is closed by the cover according to deformation of the support portion.
4. A power panel, comprising:
a case housing electrical equipment;
forming an outer plate of the box body;
a vent formed on the outer panel and introducing external air into the case;
an intake duct formed on an outer side of the outer panel of the case and covering the vent; and
a ventilation passage formed at the ventilation port,
wherein the ventilation passage includes a guide plate that guides the airflow upward toward the outside of the case,
wherein the intake port of the intake section duct is formed at a lower end portion of the intake section duct.
5. An arc energy blocking device formed at a vent through which external air flowing in a switchboard passes, the arc energy blocking device being capable of closing the vent in the event of an internal arc accident in the switchboard, and comprising:
a box-shaped internal ventilation member formed with a first opening portion connected to the ventilation port;
a second opening portion formed in a surface opposite to a surface of the first opening portion in which the internal ventilation member is formed;
a cover capable of closing the second opening; and
a support member that supports the cover, wherein,
wherein the support member includes a support portion that supports the cover to prevent contact between the cover and a surface in which the second opening portion is formed,
wherein the support portion is deformed according to an increase in internal pressure of the distribution board,
wherein the second opening portion is closed by the cover according to deformation of the support portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017176258A JP6439841B1 (en) | 2017-09-14 | 2017-09-14 | Switchboard and arc energy cutoff device |
| JP2017-176258 | 2017-09-14 | ||
| PCT/JP2018/020259 WO2019053955A1 (en) | 2017-09-14 | 2018-05-28 | Distribution board and arc energy interrupting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111095702A true CN111095702A (en) | 2020-05-01 |
| CN111095702B CN111095702B (en) | 2021-04-02 |
Family
ID=64668568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880059129.6A Active CN111095702B (en) | 2017-09-14 | 2018-05-28 | Switchboard and arc energy interruption device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6439841B1 (en) |
| CN (1) | CN111095702B (en) |
| MY (1) | MY183268A (en) |
| WO (1) | WO2019053955A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102160052B1 (en) * | 2019-03-15 | 2020-09-25 | 엘에스일렉트릭(주) | Arc Ventilation System of Distrbuting Board |
| US11631968B2 (en) | 2019-03-15 | 2023-04-18 | Ls Electric Co., Ltd. | Arc ventilation system of distributing board |
| CN112425016B (en) * | 2019-06-03 | 2023-04-28 | 东芝三菱电机产业系统株式会社 | Explosion-proof structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011004530A (en) * | 2009-06-18 | 2011-01-06 | Toshiba Corp | Ventilation device for switch gear |
| CN104604053A (en) * | 2012-10-10 | 2015-05-06 | 三菱电机株式会社 | Switchgear |
| CN105340142A (en) * | 2013-07-17 | 2016-02-17 | 施耐德电气美国股份有限公司 | Internal arc management and ventilation for electrical equipment |
| CN106030943A (en) * | 2014-02-28 | 2016-10-12 | 株式会社明电舍 | Enclosed switchboard |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000295721A (en) * | 1999-04-02 | 2000-10-20 | Hitachi Service & Engineering (East) Ltd | Waterproof structure of control board |
| MY163573A (en) * | 2007-06-25 | 2017-09-29 | Mitsubishi Electric Corp | Metal close type switch gear |
| JP5286210B2 (en) * | 2009-09-28 | 2013-09-11 | 株式会社東芝 | Metal closed switchgear |
| JP6340311B2 (en) * | 2014-12-18 | 2018-06-06 | 株式会社東芝 | Metal Closed Switchgear Ventilator |
-
2017
- 2017-09-14 JP JP2017176258A patent/JP6439841B1/en active Active
-
2018
- 2018-05-28 CN CN201880059129.6A patent/CN111095702B/en active Active
- 2018-05-28 WO PCT/JP2018/020259 patent/WO2019053955A1/en active Application Filing
- 2018-05-28 MY MYPI2020001214A patent/MY183268A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011004530A (en) * | 2009-06-18 | 2011-01-06 | Toshiba Corp | Ventilation device for switch gear |
| CN104604053A (en) * | 2012-10-10 | 2015-05-06 | 三菱电机株式会社 | Switchgear |
| CN105340142A (en) * | 2013-07-17 | 2016-02-17 | 施耐德电气美国股份有限公司 | Internal arc management and ventilation for electrical equipment |
| CN106030943A (en) * | 2014-02-28 | 2016-10-12 | 株式会社明电舍 | Enclosed switchboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111095702B (en) | 2021-04-02 |
| JP2019054605A (en) | 2019-04-04 |
| MY183268A (en) | 2021-02-18 |
| JP6439841B1 (en) | 2018-12-19 |
| WO2019053955A1 (en) | 2019-03-21 |
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