KR102647275B1 - Arc emission device for switchgear - Google Patents

Abstract

The present invention relates to an arc discharge device for a switchboard, which separates and collects arcs from adjacent first and second function rooms that are mutually isolated by a partition, and has a first outlet at the upper edge that discharges the arcs from the first function room. and a collection unit having a second outlet for discharging the arc of the second function room, and a collector unit which is vertically coupled to both sides of the upper surface of the collection unit to separate and transport the arc discharged through the first outlet and the second outlet. It may include an arc transfer unit having a pair of vertical apertures, and a discharge unit each coupled to an upper part of the arc transfer unit and having an outlet area larger than the inlet area.

Description

Arc emission device for switchgear}

The present invention relates to an arc discharge device for a switchboard, and more particularly, to an arc discharge device for a high voltage switchboard.

In general, a switchboard receives high-voltage electricity, reduces the pressure to suit the load of each customer, and then distributes it. Switchgear, relays, transformers, circuit breakers, disconnectors, etc. are used to monitor and control electrical devices or circuits, and busbars. The facility is concentrated in one location.

In order to secure arc-resistant performance, such a switchgear (MCSG; Metal Clad SwitchGear) requires an arc discharge structure that can withstand the pressure, gas, and heat energy caused by the arc in the switchgear enclosure, as well as effectively discharge the arc.

Normally, arc discharge is done through the upper surface of the switchboard enclosure, as described in registered patent 10-1252626 (registered on April 3, 2013, high- and low-voltage switchboard, motor control panel, and distribution board with arc-blocking protection structure forming an arc-extinguishing discharge port). It is done through the side.

In particular, conventional arc discharge devices include Publication Patent No. 10-2019-0017693 (published on February 20, 2019, high-voltage switchboard enclosure device with enhanced arc discharge function), Japanese Patent Publication 4703426 (registered on March 18, 2011, switch As described in Gear, etc., it includes an emission path that discharges radiation from each isolated function room to the outside of the arc pole.

In this way, when a path for arc discharge is provided in the breaker room where the circuit breaker is located and the bus bar room where the bus bar including the busbar is located, there was a problem in that the degree of integration was lowered.

Taking this problem into consideration, it is possible to consider a structure in which multiple rooms share a discharge path such as an arc discharge tube. However, when an arc generated in a specific room is discharged, the arc flows into other rooms that share the path. Because this phenomenon may occur, it is not easy to design an appropriate emission path.

The problem to be solved by the present invention in consideration of the above problems is to provide an arc discharge device that can share the arc discharge path of each functional room in the distribution board where arcs may occur.

In addition, another object of the present invention is to provide an arc discharge device that can prevent arcs emitted from a specific functional room from affecting other functional rooms while sharing the arc discharge path.

In particular, the present invention provides an arc discharge device that uses a common arc discharge structure and can improve temperature performance by allowing each function room to circulate with external air.

The arc discharge device of the present invention to solve the above technical problem separates and collects arcs from adjacent first and second functional rooms that are mutually isolated by a partition, and discharges the arcs of the first functional room at the upper edge. A collection unit having a first outlet and a second outlet for discharging the arc of the second function room, and vertically coupled to both sides of the upper surface of the collection unit to separate the arc discharged through the first outlet and the second outlet. It may include an arc transfer unit having a pair of vertical through holes for transporting the arc, and a discharge unit each coupled to an upper part of the arc transfer unit and having an outlet area larger than the inlet area.

In an embodiment of the present invention, the collection part is located in the center and is located between the first function room and the second function room, and includes an upper surface and a front surface, where the upper surface is closed and the front is open, and the air flow blocking part. A side part coupled to both ends of the unit and having a first outlet for discharging the arc of the first functional chamber and a second outlet for discharging the arc of the second functional chamber at the upper part, and downward from the central lower side of the upper surface of the airflow blocking unit. A vertical blocking plate that extends to block between the first and second discharge ports, and an inclined blocking plate that extends obliquely from the end of the vertical blocking plate to the lower edge of the side portion to block between the first and second functional rooms. may include.

In an embodiment of the present invention, the arc transfer unit includes a central partition protruding vertically at the center of one side of the first side plate, a first side plate protruding vertically from an edge of one side of the first side plate, and , a second side plate forming part of the enclosure of the switchboard, and a second side plate protruding from one edge of the second side plate toward the first side plate, between the first side plate, the second side plate, and the central bulkhead. It may be done by combining the first side plate and the second side plate so that it is located at .

The present invention has the effect of improving the degree of integration of the switchboard and ensuring convenience of design by sharing the arc emission path of functional rooms where arcs are likely to occur.

In addition, the present invention has the effect of ensuring safety performance by sharing the arc emission path but using structural features to prevent arcs emitted from a specific functional room from affecting other functional rooms.

In addition, the present invention has the effect of improving cooling performance by allowing outdoor air to circulate easily in each functional room sharing the arc discharge path.

Figure 1 is a perspective view of an arc discharge device of a switchboard according to a preferred embodiment of the present invention.
Figure 2 is an exploded perspective view of Figure 1.
Figure 3 is a cross-sectional view of the combined state of the present invention.
Figure 4 is an explanatory diagram explaining the arc emission direction of the present invention.

In order to fully understand the configuration and effects of the present invention, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms and various changes can be made. However, the description of this embodiment is provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the present invention of the scope of the invention. In the attached drawings, components are shown enlarged in size for convenience of explanation, and the proportions of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various components, but the components should not be limited by the above terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, the 'first component' may be named 'the second component' without departing from the scope of the present invention, and similarly, the 'second component' may also be named 'the first component'. You can. Additionally, singular expressions include plural expressions, unless the context clearly dictates otherwise. Unless otherwise defined, terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art.

Hereinafter, an arc discharge device for a switchboard according to an embodiment of the present invention will be described in detail with reference to the drawings.

Figure 1 is a partial perspective view of an arc discharge device of a switchboard according to a preferred embodiment of the present invention, and Figure 2 is a partial exploded perspective view of Figure 1.

Referring to Figures 1 and 2, the arc discharge device of the present invention collects air currents (hereinafter collectively referred to as arcs) caused by arc generation in each neighboring function room, but the effect of the arc generated in a specific function room is not affected by other neighboring functions. A collection unit 110 that blocks things from affecting the thread, a pair of arc transfer units 120 that can separate the airflow collected on both sides of the upper surface of the collection unit 110 and discharge it upward, and It includes an exhaust unit 130 provided at the top of each transfer unit 120 to increase the cross-sectional area of the airflow outlet side to ensure smooth exhaust.

Hereinafter, the structure and operation of the present invention configured as described above will be described in more detail.

Figure 3 is a cross-sectional configuration diagram of the present invention in an installed state.

Referring to this, the arc discharge device 100 of the present invention is used in a distribution board divided into a lower layer 10 and an upper layer 20, when an arc occurs in the first functional room 11 and the second functional room 12 of the lower layer. The generated air current is discharged to the top of the switchboard.

In particular, it is possible to provide an airflow structure in which the first functional room 11 and the second functional room 12 are separated from each other without using additional opening and closing means.

The first functional room 11 may be a busbar room to which a busbar is connected, and the second functional room 12 may be a circuit breaker room. The present invention is not limited thereto, and the present invention is not limited thereto, and is located adjacent to each other and has the possibility of arc generation. It can be applied to fields.

The present invention can be applied to a switchboard structure in which functional rooms are stacked top and bottom, but is not necessarily applicable only to a stacked switchboard structure.

In order to prevent the first functional room 11 and the second functional room 12 from influencing each other, such as arc generation, the collection unit 110 is provided to the first functional room 11 and the second functional room 12. A separate space is provided that communicates with each.

Specifically, the collection unit 110 is located in the center and is installed between the first function room 11 and the second function room 12, the upper surface 117a is closed, and the front surface 117b is closed. ) is an open airflow blocking portion 117, and a first outlet 112 and a second functional chamber that are coupled to both ends of the airflow blocking portion 117 and discharge the arc of the first functional chamber 11 at the top. The side portion 116 is formed with the second outlet 113 for discharging the arc of (12), and extends downward from the central lower side of the upper surface 117a of the air flow blocking portion 117, and the first outlet 112 and a vertical blocking plate 114 that blocks the space between the second outlet 113 and the vertical blocking plate 114, which extends obliquely from the end of the vertical blocking plate 114 to the lower edge of the side portion 116 to form a space between the first function room 11 and the second outlet 113. It is configured to include an inclined blocking plate (115) that blocks the space between the two function rooms (12).

The lower end of the inclined blocking plate 115 is in contact with the upper end of the partition wall 13 between the first functional room 11 and the second functional room 12.

Due to the shape of the collection part 110, the arc generated in the first function room 11 is discharged to the first outlet 112 through the space formed by the side part 116 and the upper surface of the inclined blocking plate 115. , the arc generated in the second function room 12 is discharged to the second outlet 113 through the space formed by the side part 116 and the lower surface of the inclined blocking plate 115.

In other words, it is possible to separate and collect arcs generated in two different functional rooms through the single-configuration collection unit 110, and in particular, the influence of arcs generated in the first functional room 11 is reduced by the second functional room 12. ), and conversely, it is possible to prevent the influence of the arc generated in the second functional room (12) from affecting the first functional room (11).

An arc transfer unit 120 having an elongated vertical shape is coupled to the upper part of the collection unit 110. The lower ends of the arc transfer unit 120 may be connected to each other.

The arc transfer unit 120 has a structure that separates airflows discharged from each of the first outlet 112 and the second outlet 113 and moves them upward. That is, a pair of vertical holes A and B separated from each other are provided, and each vertical hole corresponds to the first outlet 112 and the second outlet 113.

Specifically, the arc transfer unit 120 includes a central partition 123 protruding vertically at the center of one side of the first side plate 121, and a central partition 123 protruding vertically from the side edge of the first side plate 121. A first side plate 124, a second side plate 122 forming part of the enclosure of the distribution board, and a second side plate 125 protruding from one edge of the second side plate 122 toward the first side plate 121. ) may be configured to include.

In addition, the lower part of the vertically elongated structure at both ends of the upper part of the collection part 110 is communicated with each other by the communication part 126, and the communication at this time is between the first outlet 112 and the second outlet ( 113), and the first outlet 112 and the second outlet 113 do not communicate with each other.

The first side plate 121 and the second side plate 122 are coupled to each other so that the first side plate 124, the central partition 123, and the second side plate 125 are located between them, and thus the first side plate 122 A vertical hole B defined by 124 and the central partition 123 and a vertical hole A defined by the second side plate 125 and the central partition 123 are formed.

Accordingly, the arc discharged through each of the first outlet 112 and the second outlet 113 can be discharged without affecting the function room on the opposite side.

The second side plate 122 may be part of the switchboard enclosure.

The upper part of the second side plate 122 may form one side of the discharge portion 130.

A discharge unit 130 is coupled to the upper part of the pair of arc transfer units 120, respectively.

The shape of the discharge portion 130, which is formed along with a part of the switchboard enclosure, is hollow and has an open upper and lower surfaces. In particular, the open area of the upper side is larger than the open area of the lower side.

In this structure, the first functional room 11 is connected to the outside air through the discharge unit 130, the vertical hole A of the arc transfer unit 120, and the first outlet 112, and the second functional room ( 12) is connected to the outside air through the discharge unit 130, the vertical hole B of the arc transfer unit 120, and the second discharge port 113.

In this way, by allowing the air inside the first functional room (11) and the second functional room (12) to circulate with the air outside the switchboard, the heat generated in the first functional room (11) and the second functional room (12) can effectively dissipate heat.

Figure 4 is an explanatory diagram for explaining the flow of air exhausted by the present invention.

Referring to FIG. 4, the airflow generated under the influence of the arc in the first functional room 11 or the second functional room 12 does not affect other adjacent functional rooms due to the inclined blocking plate 115, and the airflow It is collected at 110 and discharged to the arc transfer unit 120 through the first outlet 112 or the second outlet 113 formed on both sides of the upper surface of the collection unit 110. Reference numeral 30 is the exhaust port of the switchboard.

The pipe diameter of the arc transfer unit 120 is relatively narrow, and the discharge of airflow can be accelerated.

In addition, because the shape of the discharge unit 130 has a larger opening area on the upper side than the opening area in contact with the arc transfer unit 120 on the lower side, rapid discharge of the arc pressurized while passing through the arc transfer unit 120 is possible. It becomes possible.

In this way, the present invention can discharge air currents caused by arcs generated in different functional rooms using a single device, and can prevent arcs generated in a specific functional room from affecting other functional rooms.

In addition, according to the present invention, during normal operation in which no arc occurs, each functional room is always in communication with the outside air, thereby improving the heat dissipation performance of each functional room.

Although embodiments according to the present invention have been described above, they are merely illustrative, and those skilled in the art will understand that various modifications and equivalent scope of embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: Lower floor 11: First function room
12:Second Function Room 110:Collection Department
120: Arc transfer unit 130: Discharge unit

Claims (3)

The arcs of the adjacent first and second functional rooms, which are mutually isolated by a partition, are separated and collected, and at the upper edge there is a first outlet that discharges the arcs of the first functional room and a second outlet that discharges the arcs of the second functional room. a collection unit having an outlet;
an arc transfer unit vertically coupled to both sides of the upper surface of the collection unit and having a pair of vertical holes for separating and transferring the arc discharged through the first discharge port and the second discharge port; and
Each is coupled to the upper part of the arc transfer unit and includes a discharge unit whose outlet area is larger than the inlet area,
The collection department,
An airflow blocking portion located in the center, located between the first functional room and the second functional room, including the upper surface and the front, with the upper surface closed and the front open;
A side portion coupled to both ends of the airflow blocking portion and having a first outlet for discharging arcs from the first functional chamber and a second outlet for discharging arcs from the second functional chamber at the upper portion;
a vertical blocking plate extending downward from the central lower side of the upper surface of the airflow blocking unit and blocking a space between the first outlet and the second outlet; and
An arc discharge device for a switchboard including an inclined blocking plate that extends obliquely from an end of the vertical blocking plate to a lower edge of the side portion to block a space between a first functional room and a second functional room. delete According to paragraph 1,
The arc transfer unit,
A central partition protruding vertically at the center of one side of the first side plate;
a first side plate protruding in the vertical direction from an edge of one side of the first side plate;
a second side plate forming part of the enclosure of the switchboard;
Including a second side plate protruding from one edge of the second side plate toward the first side plate,
An arc discharge device for a switchboard, characterized in that the first side plate and the second side plate are combined so that the first side plate, the second side plate, and the central partition are positioned between the first side plate and the central bulkhead.

Images