KR20220028974A - Apparatus for ventilating arc inside distribution panel - Google Patents

Abstract

The present invention discloses an apparatus for discharging an arc in a distributing board, including: a distributing board body (110) forming an outer shape of a distributing board enclosure; a plurality of first compartments (120) partitioned by a partition wall (111) on one inner side of the distributing board body (110) and vertically stacked to isolate and store power distribution-related unit circuits; a compartment arc discharge duct (130) coupled to a side surface of each of the first compartments (120) to communicate with the first compartments (120) through an inner arc chamber (131), and formed in a vertical direction to guide an arc generated in the first compartment (120) to a first arc chamber (132) communicating with an upper end of the distributing board body (110) and discharge the arc to an outside of the distributing board body (110); and a second compartment (140) partitioned by a partition wall at an upper end of an uppermost first compartment (120) of the distributing board body (110) to store the power distribution-related unit circuit, and configured to guide an arc generated inside the second compartment (140) to the outside of the distributing board body (110) through a second arc chamber (141), wherein the compartment arc discharge duct (130) is separately configured and mounted inside the distributing board body (110). Accordingly, the compartment arc discharge duct (130) damaged by instantaneous arc generation is able to be separated and repaired so as to be reused.

Description

Arc evacuation device in switchboard {APPARATUS FOR VENTILATING ARC INSIDE DISTRIBUTION PANEL}

The present invention relates to an arc discharge device in a switchboard that can separate and repair the compartment arc discharge duct damaged by instantaneous arc generation by separately mounting the arc discharge duct inside the switchboard body to make it recyclable.

In general, a switchboard is a device used for monitoring, control, and protection of the power system of a power plant or substation, and various distribution-related unit circuits such as a circuit breaker, a protection relay, an instrument current transformer or a load switch are insulated and housed.

In the distribution-related unit circuit in such a switchboard, a high-temperature and high-pressure arc may be generated due to a short circuit, a ground fault, or an insulation breakdown when the line is opened and closed.

On the other hand, as a related prior art, Korean Patent Application Laid-Open No. 10-2019-0140740 is disclosed, and the conventional arc discharge system of a multi-stage switchboard includes a first compartment 12 installed in the first stage, the first stage The second compartment 13 installed in the second stage disposed on the upper side, the side arc discharge chamber provided on one side of the first compartment 12 and the second compartment 13, and the first compartment 12 and the second It is installed between the compartments 13 and is configured to include an intermediate arc induction chamber 20 that communicates with the side arc discharge chamber, so that an intermediate arc induction chamber is provided between the upper and lower compartments so that the arc generated in the lower compartment is transferred to the upper We want to avoid damaging the compartment.

However, when an arc is generated, the self-structure of the side arc discharge chamber or the intermediate arc induction chamber may be deformed due to the high temperature heat generated by the flame and the high pressure discharge pressure. In this case, only the side arc discharge chamber or the intermediate arc induction chamber There is a problem that cannot be maintained.

Accordingly, there is a need for a technology capable of separating and repairing a compartment arc discharge duct damaged by instantaneous arc generation by separately mounting the arc discharge duct inside the switchboard body to make it recyclable.

Korean Patent Application Laid-Open No. 10-2019-0140740 (Arc exhaust system of multi-stage switchgear, 2019.12.20) Korean Patent Publication No. 10-1933104 (Container-type switchgear for pressure relief, 2018.12.27)

The technical problem to be achieved by the idea of the present invention is to separate and repair the arc discharge duct damaged by the instantaneous arc generation by separately installing the arc discharge duct inside the switchboard body to make it possible to recycle the arc discharge in the switchboard. to provide the device.

In order to achieve the above object, the present invention, a switchboard body forming the outer shape of the switchboard enclosure; a plurality of first compartments partitioned by partition walls inside one side of the switchboard body and stacked in a vertical direction to isolate and receive power distribution-related unit circuits; It is coupled to the side surface of each of the first compartments to communicate through the internal arc chamber, and is formed in a vertical direction to guide the arc generated in the first compartment to the first arc chamber formed in communication with the upper end of the switchboard body, and the switchboard body venting to the outside, the compartment arc exhaust duct; and a second compartment partitioned by a partition wall at the upper end of the first compartment at the top of the switchboard body to accommodate a power distribution-related unit circuit, and for guiding the arc generated therein to the outside of the switchboard body through a second arc chamber; It provides an arc discharge device in the switchboard, which separately configures and mounts the compartment arc discharge duct inside the switchboard body.

Here, the compartment arc discharge duct may be composed of a main arc discharge duct outside, and a module discharge duct that is modularized inside the main arc discharge duct and coupled in the vertical direction.

In addition, an elastic body for shock absorption may be interposed between the main arc discharge duct and the module discharge duct.

In addition, the inner arc chamber may be elastically hinged at an opening angle of 45° in the arc discharge direction from the first compartment to the compartment arc discharge duct by arc pressure.

In addition, it may further include a stopper for limiting the hinge rotation of the inner arc chamber at an opening angle of 45 °.

In addition, by forming an inner space in a vertical direction inside the other side of the switchboard body, a vertical bus room for accommodating a metal strip or a metal bar electrically connected to the distribution-related unit circuit of the first compartment is partitioned and formed, A main bus room accommodating a metal strip or a metal bar electrically connected to the distribution-related unit circuit of the two compartments may be partitioned and formed.

In addition, the module exhaust duct may be individually modularized to correspond to the number of the first compartments.

In addition, a plurality of radiating fins for cooling heat generated during arc induction may be spaced apart from each other around the outer surface of the main arc discharge duct.

In addition, the first arc chamber and the second arc chamber may be elastically hinge-rotated at an opening angle of 30° to 45° in the arc discharge direction.

In addition, a torsion blade may be formed inside the module discharge duct to swirl and discharge when the arc flows, and to prevent structural deformation of the module discharge duct.

According to the present invention, there is an effect that the compartment arc discharge duct is separately mounted inside the switchboard body to separate and repair the compartment arc discharge duct damaged by instantaneous arc generation so that it can be recycled.

In addition, the arc discharge duct is composed of a double bulkhead structure with the main arc discharge duct on the outside and a plurality of module discharge ducts on the inside that are modularized and vertically coupled to separate and replace only the damaged module discharge duct among the plurality of module discharge ducts. It has the effect of performing quick maintenance.

Furthermore, it is configured to elastically hinge the inner arc chamber at an opening angle of 45° in the arc discharge direction and to limit the hinge rotation angle, so that the arc can be naturally guided in the vertical direction to the upper first arc chamber. It works.

1 illustrates an arc discharge system of a multi-stage switchboard according to the prior art.
2 is a front view, a side view, and a plan view of an arc discharge device in a switchboard according to an embodiment of the present invention, respectively.
3 is a view showing a compartment arc discharge duct area of the arc discharge device in the switchboard of FIG. 2 .
4 is a view showing the separation of the upper area of the arc discharge duct of the compartment of FIG. 2 .
FIG. 5 shows a busroom area of the compartment arc discharge duct of FIG. 2 .
Figure 6 is a view showing the separation of the module exhaust duct of the arc exhaust duct of the compartment of Figure 2.
FIG. 7 illustrates the hinge rotation of the inner arc chamber of the arc discharge duct of the compartment of FIG. 2 .

Hereinafter, embodiments of the present invention having the above-described characteristics will be described in more detail with reference to the accompanying drawings.

The arc discharge device in the switchboard according to the embodiment of the present invention is divided by the switchboard body 110, which forms the outer shape of the switchboard enclosure, and a partition wall 111 inside one side of the switchboard body 110 to isolate the distribution-related unit circuit. A plurality of first compartments 120 stacked in the vertical direction to receive, coupled to the side surfaces of each first compartment 120 to communicate through the inner arc chamber 131, are formed in the vertical direction to receive the first compartment 120 Compartment arc discharge duct 130, and the switchboard body 110, which guides the arc generated in the first arc chamber 132 to be communicated with the upper end of the switchboard body 110 and discharges it to the outside of the switchboard body 110 A second compartment 140 that is partitioned by a partition at the upper end of the uppermost first compartment 120 to accommodate a power distribution-related unit circuit, and guides an arc generated therein to the outside of the switchboard body 110 through the second arc chamber 141 ), by separately configuring and mounting the compartment arc discharge duct 130 inside the switchboard body 110, to separate and repair the compartment arc discharge duct 130 damaged by instantaneous arc generation to make it recyclable make the gist

Hereinafter, with reference to FIGS. 1 to 7, the arc discharge device in the switchboard of the above configuration will be described in detail as follows.

First, the switchboard body 110 forms the outer shape of the switchboard enclosure, and supports the first compartment 120 and the compartment arc discharge duct 130 and the second compartment 140 formed therein.

Next, as shown in FIG. 2 , the first compartment 120 is partitioned by an insulated partition wall 111 in the horizontal direction inside one side of the switchboard body 110, and is vertical to isolate and accommodate the distribution-related unit circuits. Multiple layers are formed in the direction.

Next, the compartment arc discharge duct 130 is an arc induction chamber, as shown in FIGS. 2 and 3, is coupled to the side surface of each first compartment 120 and communicates through the internal arc chamber 131, vertical formed in the direction of the arc generated by a short or ground or dielectric breakdown in any one of the first compartments 120, that is, the arc gas is formed in communication with the upper end of the switchboard body 110 It is guided to the first arc chamber 132 and discharged to the outside of the switchboard body 110 along the arc discharge path (A) through the opening of the first arc chamber 132 through the discharge pressure of the arc.

Here, the compartment arc discharge duct 130 has a double bulkhead structure so that only the inner bulkhead is damaged by absorbing the arc, that is, the high temperature and high pressure of the arc gas. The arc exhaust duct 133 and the main arc exhaust duct 133 are modularized inside and are composed of a plurality of module exhaust ducts 134 coupled in the vertical direction, so that the damaged of the module exhaust duct 134 inside the arc is generated during arc generation. By removing and replacing only the module discharge duct 134, quick maintenance can be performed.

On the other hand, the module exhaust duct 134 may be individually modularized to correspond to the number of the first compartment 120 and formed to correspond to 1:1.

In addition, an elastic body 135 of a spring or sponge or elastic pad for shock absorption is interposed between the main arc discharge duct 133 and the module discharge duct 134, so that the elastic body 135 is separated from the module discharge duct 134. It is also possible to absorb the shock transmitted to the main arc discharge duct 133 to minimize damage to the main arc discharge duct (133).

In addition, referring to FIG. 6 , a plurality of heat dissipation fins 136 for cooling heat generated during induction of a high-temperature and high-pressure arc are spaced apart and formed in plurality around the outer surface of the main arc discharge duct 133, so that when the arc passes By discharging the high temperature of the arc to the outside to cool it, it may serve to minimize the deformation of the main arc discharge duct 133 or the module discharge duct 134 due to the high temperature.

In addition, as shown in FIG. 7 , the internal arc chamber 131 has an arc discharge direction from the first compartment 120 to the compartment arc discharge duct 130 by the pressure of the arc generated inside the first compartment 120 . It is configured to hinge rotationally elastically at an opening angle of 45 °, so that the arc introduced in the horizontal direction into the arc discharge duct 130 in the compartment can be naturally guided in the vertical direction to the first arc chamber 132 above. Accordingly, when an arc is generated in any one of the first compartments 120 among the plurality of first compartments 120, the arc is induced only upward to correspond to the first compartment 120 in which the lower arc is not generated. Compartment arc discharge duct 130 can be to minimize the influence of the arc so as not to flow back into the space.

Here, the inner arc chamber 131 is formed to be hinged elastically by the coil spring 131a, is elastically opened by the pressure of the generated arc, and the arc is discharged from the inside of the first compartment 120 . Upon completion, it can be closed resiliently to prevent backflow of the arc.

On the other hand, it is possible to limit the hinge rotation of the inner arc chamber 131 at an opening angle of 45 ° by the elastic force of the coil spring (131a) itself, but a separate stopper (not shown) is configured to remove the inner arc chamber 131 . It can also be limited to hinge rotation with an opening angle of 45°.

In addition, the same as the hinge rotation structure of the inner arc chamber (131). 4, the first arc chamber 132 and the second arc chamber 141 are elastically formed by the coil springs 132a and 141a at an opening angle of 30° to 45° in the arc discharge direction. By rotating the hinge, the arc is discharged naturally by the pressure of the arc, and the arc is closed by the restoring force of the coil springs 132a and 141a to prevent the reverse flow of the arc.

Next, the second compartment 140 is partitioned by a partition wall 111 at the upper end of the first compartment 120 at the top of the switchboard main body 110 to accommodate the unit circuit related to power distribution, and the arc generated therein is transferred to the second arc chamber ( 141) (refer to FIG. 4) to guide and discharge the switchboard body 110 to the outside.

On the other hand, FIG. 5 shows the bus room area of the arc discharge duct of the compartment of FIG. 2 . Referring to this, an internal space is formed in the other side of the switchboard body 110 in a vertical direction, and the first compartment 120 of FIG. A vertical bus room 150 accommodating a metal strip or a metal bar electrically connected to the distribution-related unit circuit is partitioned and formed, and a metal strip or a metal bar electrically connected to the distribution-related unit circuit of the second compartment 140 is accommodated. The main bus room 160 is divided so as not to be affected by the arc generated inside the first compartment 120 or the second compartment 140, and the electrical connection configuration with the distribution-related unit circuit can be protected. .

In addition, referring to FIG. 6 , a torsion blade 137 is formed inside the module discharge duct 134 to swirl and discharge when the arc flows, and to prevent structural deformation of the module discharge duct 134 , so that the arc By rotating the flow to lower the flow rate, it is possible to minimize damage or deformation of the arc discharge duct 130 in the compartment due to the high pressure of the arc, and to cool it by uniformly mixing with air.

Therefore, by the configuration of the arc discharge device in the switchboard as described above, the compartment arc discharge duct is separately mounted inside the switchboard body to separate and repair the arc discharge duct damaged by the instantaneous arc generation so that it can be recycled, and the arc The exhaust duct is composed of a double bulkhead structure with the main arc exhaust duct on the outside and the module exhaust duct on the inside that is modularized and vertically combined, so that only the damaged module exhaust duct is separated and replaced for quick maintenance is configured to elastically hinge the inner arc chamber at an opening angle of 45° in the arc discharge direction and to limit the hinge rotation angle, so that the arc is naturally induced in the vertical direction to the upper first arc chamber can do.

The embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be water and variations.

110: switchboard body 111: bulkhead
120: first compartment 130: compartment arc exhaust duct
131: inner arc chamber 132: first arc chamber
133: main arc exhaust duct 134: module exhaust duct
135: elastic body 136: heat dissipation fin
137: torsion blade 140: second compartment
141: second arc chamber 150: vertical bus room
160 : main bus room

Claims (10)

a switchboard body forming the outer shape of the switchboard enclosure;
a plurality of first compartments partitioned by partition walls inside one side of the switchboard body and stacked in a vertical direction to isolate and receive power distribution-related unit circuits;
It is coupled to the side surface of each of the first compartments to communicate through the internal arc chamber, and is formed in a vertical direction to guide the arc generated in the first compartment to the first arc chamber formed in communication with the upper end of the switchboard body, and the switchboard body venting to the outside, the compartment arc exhaust duct; and
A second compartment divided by a partition wall at the upper end of the first compartment at the top of the switchboard body to accommodate a power distribution-related unit circuit, and to guide an arc generated therein to the outside of the switchboard body through a second arc chamber; Containing, the An arc exhaust device in a switchboard that is separately configured and mounted in the compartment arc exhaust duct inside the switchboard body.
The method of claim 1,
The arc discharge duct in the compartment is characterized in that it is composed of a main arc discharge duct on the outside, and a module discharge duct that is modularized and vertically coupled inside the main arc discharge duct, the arc discharge device in the switchboard.
3. The method of claim 2,
An arc discharge device in a switchboard, characterized in that an elastic body for shock absorption is interposed between the main arc discharge duct and the module discharge duct.
The method of claim 1,
The arc discharge device in a switchboard, characterized in that the internal arc chamber is elastically hinged at an opening angle of 45° in the arc discharge direction from the first compartment to the compartment arc discharge duct by the pressure of the arc.
5. The method of claim 4,
The arc discharge device in the switchboard, characterized in that it further comprises a stopper for limiting the hinge rotation of the inner arc chamber at an opening angle of 45 °.
The method of claim 1,
By forming an inner space in a vertical direction inside the other side of the switchboard body, a vertical bus room for accommodating a metal strip or a metal bar electrically connected to the power distribution-related unit circuit of the first compartment is partitioned and formed,
An arc discharge device in a switchboard, characterized in that the main bus room accommodating a metal strip or a metal bar electrically connected to the distribution-related unit circuit of the second compartment is partitioned and formed.
4. The method of claim 3,
The module discharge duct is individually modularized in accordance with the number of the first compartment, characterized in that the arc discharge device in the switchboard.
The method of claim 1,
An arc discharge device in a switchboard, characterized in that a plurality of heat dissipation fins for cooling the heat generated during arc induction are spaced apart from each other around the outer surface of the main arc discharge duct.
The method of claim 1,
The arc discharge device in a switchboard, characterized in that the first arc chamber and the second arc chamber are elastically hinged at an opening angle of 30° to 45° in the arc discharge direction.
8. The method of claim 7,
An arc discharge device in a switchboard, characterized in that a torsion blade is formed inside the module discharge duct to swirl and discharge when the arc flows, and to prevent structural deformation of the module discharge duct.

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