KR100583791B1 - High integrated metal clad - Google Patents

Abstract

The present invention relates to a water distribution panel, and more specifically, to install a horizontal bulkhead inside the closed power panel to spatially separate the mother compartment and the equipment room and electromagnetic shielding, using a plurality of vertical bushings installed in the horizontal bulkhead The electrical connection between the busbar of the busbar and the equipment of the equipment room prevents flashover accidents, and in the event of an explosion, it quickly discharges the gas or vapor of high temperature and high pressure through the gas outlet installed in the busbar. The present invention relates to a highly integrated closed switchgear capable of preventing the gas from spreading and breaking, and efficiently reducing the size of the high-pressure platen by efficiently using the inner space of the closed switchgear.

 The high-density closed power panel according to the present invention is installed inside the closed power switchboard and partitioned into a mother room where a plurality of busbars are installed and an equipment room where various power devices are installed, and the pressure inside the equipment room may rise above a certain level. A horizontal partition wall fixed so as to be separated to the mother compartment when the bus is separated; A plurality of vertical bushings installed perpendicular to the horizontal bulkhead to electrically connect the bus bar installed in the bus chamber and the power devices installed in the device chamber; It is configured to include a plurality of gas discharge device in communication with the bus chamber, the high temperature and high pressure gas or flame generated in the equipment room through the air circulation hole of the horizontal bulkhead and the gas discharge device of the mother compartment high integration closed switchboard While rapidly discharging to the outside, the hot or high pressure gas or flame generated in the neighboring high density closed switch board is blocked by the horizontal partition wall and is not introduced into the equipment room.

Power panel, high voltage panel, special high voltage panel, closure, switchboard, discharge port

Description

Highly Integrated Closed Power Board {HIGH INTEGRATED METAL CLAD}

1 is a disconnection diagram showing a general male switchgear;

Figure 2 is a schematic perspective view showing an example of the extra high platen according to the prior art,

Figure 3 is a front sectional view showing an example of a high-integration closed power panel according to the present invention,

Figure 4 is a side cross-sectional view of a highly integrated closed power panel according to the present invention,

5 is a partially enlarged view showing a bus chamber of the high-density closed power board according to the present invention;

Figure 6 is a perspective view showing an example of the extra high platen composed of a highly integrated closed power panel according to the present invention,

Figure 7 is a front sectional view of a special high pressure plate composed of a highly integrated closed power panel according to the present invention,

8 is a plan view of a special high platen composed of a highly integrated closed power panel according to the present invention;

9 is a perspective view showing a moisture and contaminant removing apparatus according to the present invention;

10 is a plan view of the moisture and dirt removal apparatus according to the present invention,

11 is an exploded perspective view of a moisture and contaminant removing device according to the present invention;

12 is a partially enlarged cross-sectional view showing a horizontal partition wall in which a plurality of air circulation holes are punctured according to the present invention;

13 is a partially enlarged cross-sectional view showing an example of a gas discharge device according to the present invention;

14 is a partially enlarged cross-sectional view showing another embodiment of the gas discharge device according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

2: High pressure power panel (LBS panel) 3: Special high voltage panel

4: Transformer transformer foundation (MOF panel) 6: Instrument transformer transformer (PT panel)

8: Special high blocking base (VCB panel) 10: Highly integrated closed panel

11: cabinet 12: horizontal bulkhead

13 bus bar 14, 16: vertical bushing

15: equipment room 17, 19: bus

30: moisture and dirt removal device 41: control room

50: support bracket 55, 75: plastic bolt

56: air circulation hole 60: valve body

70: gas discharge device

The present invention relates to a water distribution panel, and more specifically, to install a horizontal bulkhead inside the closed power panel to spatially separate the mother compartment and the equipment room and electromagnetic shielding, using a plurality of vertical bushings installed in the horizontal bulkhead The electrical connection between the busbar of the busbar and the equipment of the equipment room prevents flashover accidents, and in the event of an explosion, it quickly discharges the gas or vapor of high temperature and high pressure through the gas outlet installed in the busbar. The present invention relates to a highly integrated closed power panel that can prevent gas from being broken and to reduce the size of the special high pressure plate by efficiently using the internal space of the highly integrated closed power panel.

In general, an electrical room provided in a building, a factory, or an apartment is provided with a power distribution panel for receiving high voltage or extra high voltage electricity supplied by a power company and distributing it to the load of each customer. 1 is a disconnection diagram showing a general male switchgear, and FIG. 2 is a schematic perspective view showing an example of a special high platen according to the related art. As shown, generally, the water distribution panel 100 is largely divided into a high voltage plate (or high voltage plate) 300, a transformer panel 500, and a low voltage plate 700 according to the power supply procedure and voltage of the power system. . The extra high pressure plate 300 receives electricity of a high pressure or a special high pressure supplied from the outside, the transformer panel 500 decompresses the high pressure or special high pressure electricity to the load of the consumer, and the low platen 700 ) Performs the function of sending low voltage electricity to multiple loads.

1 and 2, the special high pressure plate 300 is a high pressure power panel (LBS panel: 300-1), a transformer transformer transformer base (MOF panel: 300-2), a transformer transformer base ( PT panel: 300-3), special high-blocking base (VCB panel: 300-4) is composed of four power panels (110). The low pressure panel 700 includes a plurality of switchboards 700-1 and 700-2 installed with a circuit breaker, a condenser, a low voltage transformer, a current transformer, and a power panel 700-including a circuit breaker, a charger, and a battery. It consists of 3).

As shown in FIG. 1, the high voltage switchboard 300-1 includes a load switch (LBS) 130-1 and an arrester (LA) 130-2 inside a switchboard 110 having a predetermined size. The instrument transformer current transformer 300-2 is provided with a transformer transformer current transformer (MOF) 130-3 and a power fuse (PF) 130-4. And instrument transformer (PT) (130-5) is installed on the transformer transformer base (300-3), the vacuum breaker (VCB) (130-6) on the special high-frequency cut-off base (VCB) (130-4) And CT current transformer (CT) 130-7 and surge absorber (SA) 130-8 are respectively installed.

However, since the extra high pressure plate 300 according to the related art has a structure in which four power panels 110 are arranged in a line, an electric chamber having a relatively large area is required. In addition, the conventional power panel 110 is made of a single space, and the power circuit such as a circuit breaker, disconnector, and the control circuit and the bus line are installed together, so arc or flash of the power system (Flash) When a failure or an accident accompanying Over occurs, the power panel 110 may be damaged or the device or circuit therein may be damaged by the high temperature and high pressure gas or steam generated inside the power panel 110. In addition, the conventional high-pressure plate 300, the four power panel 110 is communicated with each other through the opening formed through the bus bar so that the high-pressure gas generated in any one of the power panel 110 to the other power panel 110. There was a problem that the entire special high platen 300 is broken by diffusion.

The present invention has been made to solve this problem, the main object of the present invention is the high-temperature, high-pressure gas or steam generated in any one closed power panel in the event of a power system failure or accident sequentially spread throughout the special high pressure plate In order to prevent it from happening, horizontal bulkheads are installed in each closed switchgear to divide the mother compartment and the equipment compartment, and a gas outlet communicating with the busbar compartment is installed to quickly discharge high-temperature, high-pressure gas or vapor to the outside in any one equipment compartment. It is to provide a highly integrated closed power board that prevents accidents from damaging power equipment, buses, supervisory control equipment and auxiliary equipment in other equipment rooms.

The present invention also provides a plurality of vertical bushings installed on the horizontal bulkhead installed inside the closed power board to electrically connect the bus bar of the bus bar and the bus bar of the equipment room to prevent spreading of fire and the like through the bus bar and the horizontal metal In addition to shortening the separation distance between phases by using a partition wall, the purpose of the present invention is to minimize the size of the highly integrated closed switch board by increasing the flashover voltage by installing a device for removing moisture and contaminants inside the equipment room.

In order to achieve this object, the high-density closed switchboard according to the present invention, in a closed switchgear provided with an internal space and a power device such as a circuit breaker, a disconnector, and a control circuit and a bus line,

It is installed inside the closed power board and partitioned into a bus room where a plurality of buses are installed and a device room where various power devices are installed, and fixed to be separated to the bus room when the pressure inside the equipment room rises above a certain level. Horizontal bulkheads; A plurality of vertical bushings installed perpendicular to the horizontal bulkhead to electrically connect the bus bar installed in the bus chamber and the power devices installed in the device chamber; It is configured to include a plurality of gas discharge device in communication with the bus chamber, the high temperature and high pressure gas or spark generated in the equipment room through the air circulation hole of the horizontal bulkhead and the gas discharge device of the mother compartment outside the closed power panel. On the other hand, the gas or flame of the high temperature and high pressure generated in the adjacent closed power board is blocked by the horizontal partition wall and is not introduced into the equipment room.

In addition, in the present invention, the horizontal bulkhead is fixed to the upper surface of the bent portion of the support bracket installed in the closed power panel using a plastic bolt that is broken when pressure is applied, and is separated from the mother compartment only by the internal pressure generated in the equipment room. It is characterized by.

In addition, the vertical bushing, the upper bushing portion made of corrugated porcelain or plastic insulation cylinder protruding toward the busbar chamber and enclosing the center conductor, and the corrugated porcelain or plastic insulation casing protruding toward the machine room through the vertical bulkhead and enclosing the center conductor The lower bushing unit is integrally formed, and a support member for fixing the vertical bushing is installed integrally with the vertical bulkhead.

In addition, the horizontal bulkhead has a through hole in which a plurality of vertical bushings are installed, and is drilled to be spaced apart from the through hole to allow air in the mother compartment and the equipment chamber to circulate, while maintaining a spatial and electromagnetic shielding of the mother compartment and the equipment chamber. It characterized in that a plurality of air circulation holes having.

Subsequently, the gas discharge device includes a discharge port formed to communicate with the busbar chamber, a pressure plate having a size capable of closing the discharge port, and a pressure bolt installed at the discharge port, and broken by pressure. It is configured to include, characterized in that the pressure plate is released to the outside by the increased internal pressure of the bus chamber to discharge the high-pressure gas inside the bus chamber quickly to the outside.

And inside the equipment room, the air is cooled by using a heat absorbing plate installed on the heat absorbing surface of the thermoelectric element to remove moisture, and the air cooled by using a heat generating plate installed on the heat generating surface of the thermoelectric element, the heat absorbing plate Moisture and decontamination apparatus is further installed to remove moisture and contaminants contained in the air by using the condensate generated.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the high-density closed power panel according to the present invention.

First, Figure 3 is a front sectional view showing an example of a highly integrated closed power board according to the present invention, Figure 4 is a side cross-sectional view of a highly integrated closed power board according to the invention, Figure 5 is a highly integrated closed power board according to the present invention 6 is a perspective view showing an example of a special high pressure plate composed of a highly integrated closed power panel according to the present invention, and FIG. 7 is a definition of a special high pressure plate composed of a highly integrated closed power panel according to the present invention. Sectional drawing, FIG. 8 is a top view of the high pressure platen comprised by the high-capacity closed power panel according to the present invention.

As shown in FIG. 6, the special high pressure plate 3 according to the present invention is composed of four highly integrated closed power panels 10 arranged in a line. In addition, inside each of the highly integrated closed switchgear 10, a power circuit such as a circuit breaker, a protection device, and a relay device and a bus bar for electrically connecting these devices are installed. That is, the special high pressure plate (3) is a high-voltage power switchboard (LBS board: 2), a transformer transformer transformer base (MOF board: 4), a transformer transformer board (PT board: 6) and according to the power flow order of the power system and It is composed of special high blocking base (VCB panel: 8), and each of the highly integrated closed power panel 10 is provided with different power equipment according to its function.

In general, unlike the high-voltage cubicle that simply surrounds devices such as breakers and disconnectors with a grounded steel sheet, the closed switchboard is divided into breakers and disconnectors to install bulkheads made of fully grounded metal, and bolts breakers and disconnectors. It is completely fixed with a nut. For example, in closed circuit boards, the conductive parts of the main circuits (buses, connecting lines, connections, etc.) shall be sufficiently insulated, and the important equipment of the main circuits shall be isolated from each other by the insulating walls from the ground metal bulkheads, The interlock is to be provided so that the disconnector cannot be operated in the closed state, the main circuit and the supervisory control panel are separated by a barrier of ground metal, and the unit is to be housed in the ground metal box consistently.

The present invention relates to a highly integrated closed power panel that satisfies such various conditions. The integrated closed power panel 10 according to the present invention includes a ceiling, a floor, and a plurality of side and doors as shown in FIG. 3. And a horizontal partition wall 12 that divides the internal space of the cabinet 11 into a bus bar chamber 13 and an equipment chamber 15. In addition, as shown in FIG. 4, the highly integrated closed power panel 10 according to the present invention includes a vertical partition wall 42 that divides the internal space of the busbar chamber 13 into the busbar chamber 13 and the control chamber 41. It includes more.

That is, the highly integrated closed power panel 10 constituting the special high pressure plate 3 is divided into the busbar chamber 13 and the equipment chamber 15 by the horizontal bulkhead 12 provided therein. In addition, a plurality of buses 17 and 19 are installed in the bus chamber 13 in the horizontal direction, and various power devices such as a circuit breaker, a protection device, and relay equipment are installed in the side wall or the bottom of the cabinet 11. Is fixed to. In addition, the buses 17 and 19 installed horizontally in the bus chamber 13 have a load switch LBS installed in the equipment room 15 through a plurality of vertical bushings 14 and 16 installed in the horizontal bulkhead 12. 21 and an electrical arrester (LA) 22 are electrically connected. As such, the highly integrated closed power panel 10 according to the present invention divides the internal space into the busbar chamber 13 and the equipment chamber 15 through a horizontal partition wall 12 so that the equipment chamber 15 is outside the cabinet 11. Do not connect directly with

Referring to FIG. 7, a load breaker (LBS) 21 and a lightning arrester (LA) 22 for receiving electricity of a special high voltage drawn from the outside are installed in the equipment room 15 of the high voltage switchgear 2. The load switch 21 is installed in the inlet and used for the purpose of separating the circuit when checking, repairing, and is used for the purpose of preventing phase loss during melting of the power fuse. The arrester (LA) 22 is a device that protects the equipment of the power equipment from the abnormal voltage.

The instrument chamber 15 of the instrument transformer current transformer base 4 is provided with a power fuse (PF) 41 and a transformer transformer current transformer (MOF) 42. The transformer transformer current transformer 42 is to be used by the customer to receive electricity from the electric power company for measuring the amount of power. In addition, an instrument transformer (PT) 61 is installed in the equipment room 15 of the instrument transformer base 6. The instrument transformer (PT) 61 converts a voltage value into a voltage value proportional thereto so that a voltage can be measured using a general voltmeter. In addition, the instrument chamber 15 of the special cut-off base 8 is provided with an instrument current transformer (CT) 81, a vacuum circuit breaker 82, and a surge absorber SA. The current transformer 81 for the instrument is to modify the current value to connect the ammeter, power meter, etc., the vacuum circuit breaker 82 to open and close the load current and at the same time to open the circuit quickly when an abnormal condition occurs as To protect and safeguard electrical equipment and wires connected to the circuit.

In addition, various protective relays are connected to the vacuum circuit breaker 82. The protection relay detects an abnormality in the circuit when an error occurs in a transformer, a capacitor, a high voltage motor, or when a ground fault occurs in the circuit, trips a circuit breaker to prevent damage to the equipment, and prevents accident propagation to other lines. It is used to. Such protective relays include overcurrent relays, overvoltage relays, overvoltage ground fault relays, undervoltage relays, ground fault relays, and the like.

On the other hand, in the bus chamber 13, such as the high-voltage power panel (2), the transformer transformer transformer base (4), the instrument transformer transformer base (6) and the special high-frequency cut-off base (8), the inlet bus 17 and the drawout bus ( 19) is installed in the horizontal direction. That is, as shown in FIG. 3, the first vertical bushing 14 and the second vertical bush are connected to the horizontal bulkhead 12 of each bus chamber 13 so as to be connected to the ends of the pulling bus 17 and the drawing bus 19. The bushings 16 are spaced apart at predetermined intervals. That is, the inlet bus 17 drawn in from the external or neighboring high density closed power panel 10 is connected to the upper end of the first vertical bushing 14 and drawn out to the neighboring high density closed power panel 10. The drawing bus 19 is connected to the upper end of the second vertical bushing 16. At this time, one side of the high-voltage switchgear (2) is provided with a horizontal bushing (25) for guiding the inlet bus 17, the side wall opposite to the high-voltage switchgear (2) and the transformer transformer current transformer base (4), Openings 26 of a predetermined size are formed in both side walls of the bus chamber 13 of the transformer transformer base 6 and the high-cut-off base 8 so that the drawing bus line 19 is drawn out horizontally.

Subsequently, an input bus 27 connected to an input terminal of a predetermined power device is connected to a lower end of the first vertical bushing 14 installed at the horizontal bulkhead 12 and protruding to a predetermined length so as to be located inside the equipment room 15. The output bus 29 which is connected to the output terminal of the power device is connected to the lower end of the second vertical bushing 16. Therefore, the inlet bus 17 of the bus bar 13 is connected to the input bus 27 of the equipment room 15 through the first vertical bushing 14, and the draw bus 19 of the bus bar 13 is connected. It is electrically connected to the output bus line 29 of the equipment room 15 via the second vertical bushing 16.

As shown in the enlarged view of FIG. 5, the horizontal bulkhead 12 is a ground metal having a predetermined size, and is fixed to the support bracket 50 installed on the inner side of the highly integrated closed power panel 10. That is, the support bracket 50 is composed of a crossbar 51 installed on the pillar of the highly integrated closed power panel 10, and a support plate 52 bent to be fixed to the crossbar 51. As described above, the vertical bulkhead 12 has a through hole 54 through which the plurality of vertical bushings 14 pass. The vertical bulkhead 12 is fixed to the bent portion 53 of the support plate 52 through a predetermined fastening means. At this time, the horizontal bulkhead 12 is installed so as not to be separated toward the equipment chamber 15 by the internal pressure generated in the bus chamber 13, but to be separated to the bus chamber 13 by the internal pressure of the equipment chamber 15. . For example, the horizontal partition wall 12 is installed to be located on the upper surface of the bent portion 53 of the support plate 52, and is fixed with a plastic bolt 55 that is broken when pressure is applied. Therefore, when an explosion occurs in the device chamber 15, the horizontal bulkhead 12 is damaged by the plastic bolt 55 and is separated from the busbar chamber 13 so that high-pressure gas is released toward the busbar chamber 13. .

On the other hand, as shown in Figure 5, the support plate 52 'installed on the front side of the high-density closed power panel 10 is extended to a sufficient length to form a control chamber 41 on the top. The control chamber 41 is achieved by providing a vertical bulkhead 42 between the support plate 52 'and the ceiling of the busbar chamber 13. The control chamber 41 is separated from the equipment chamber 15 and the busbar chamber 13 to protect the control circuit from gas or flame of high temperature and high pressure generated in the equipment chamber 15 or the busbar chamber 13.

Subsequently, as shown in FIG. 5, the first and second vertical bushings 14 and 16 penetrate through the upper bushing portion having a predetermined length and the vertical bulkhead 12 protruding toward the bus chamber 13. The lower bushing portion of a predetermined length protruding toward 15 is integrally formed. And the bushing portion is made of a magnetic or plastic insulating tube with a corrugation on the outer circumferential surface, and a central conductor installed therein. In addition, an insulating compound is filled between the insulating tube and the center conductor to increase the insulation strength. And connecting parts for connecting buses are respectively provided in the upper end and the lower end of the bushing part. In the center of the bushing part, a support member 58 is installed in the through-hole 54 of the vertical bulkhead 12 to fix the vertical bushings 14 and 16.

As described above, the highly integrated closed power panel 10 according to the present invention prevents flashover accidents by separating and shielding the bus compartment 13 and the equipment compartment 15 using the horizontal bulkhead 12 spatially and electromagnetically. . That is, in the highly integrated closed power panel 10, buses and cables for monitoring and controlling various display devices are concentrated, and insulation protection measures between the high voltage circuit and the control circuit or the arc are sufficiently provided. If the insulation system is deteriorated or unexpected surge current invades the controller or switchgear of the power panel, a continuous arc occurs to short the insulation member, causing the flashover voltage to be applied to the controller, which may cause insulation breakdown and cause an explosion accident. will be.

Therefore, the highly integrated closed power board 10 according to the present invention is a flashover accident by separating the busbar chamber 13, the equipment chamber 15, and the control chamber 41 through the horizontal bulkhead 12 and the vertical bulkhead 42, respectively. In addition to reducing the likelihood of an accident, the impact of an accident in a neighboring equipment room is also prevented from entering the control room or equipment room. Therefore, the highly integrated closed cabinet 10 according to the present invention can prevent the high-pressure gas generated in any one of the equipment room to diffuse into the equipment room or control room of the other highly integrated closed cabinet.

In addition, the high-capacity closed power switch board 10 according to the present invention is a vertical bushing (14) as well as the insulation tube or epoxy powder coating treatment of the busbar chamber 13 and the equipment chamber 15 with excellent insulation and flame retardancy ( 16) can be used to simplify the arrangement of the bus bar, and to shorten the separation distance and maintain the mechanical strength through the horizontal bulkhead 12 made of ground metal to sufficiently withstand the electromagnetic force and thermal strength generated in the event of a short circuit accident.

On the other hand, the highly integrated closed power panel 10 receiving a special high voltage of 22900kVA when the high-voltage busbar approaches within a predetermined distance, the flashover is discharged while emitting light. Accordingly, IEC (International Electrotechnical Commission) and KEMC (Korea Electrical Manufacturers' Cooperative) stipulate to keep the distance between phases and the ground more than a certain distance (210 ~ 230mm). In order to satisfy such a separation distance, the high-density closed panel according to the prior art has inevitably increased in size.

For example, the conventional high pressure plate consisting of four highly integrated closed power panels has a size of 5400-5600 mm in length, 2000-2300 mm in width, and 2350-2550 mm in height. However, when using the highly integrated closed power panel 10 according to the present invention, the size of the extra high platen is reduced to length 3000 ~ 3450mm, width 1300mm and height 2100mm to reduce the size by more than 30%.

On the other hand, in the highly integrated closed circuit board, the arc discharge occurs when the voltage between the two conductors is greater than the flash over voltage (FOV). Therefore, in order to increase the flashover voltage between two conductors spaced at the same distance, air must be free of contaminants such as moisture and soot. To this end, the highly integrated closed power panel 10 according to the present invention is installed in the equipment room 15, the device for removing moisture and contaminants.

9 is a perspective view showing the moisture and contaminant removing apparatus according to the present invention, Figure 10 is a plan view of the moisture and contaminant removing apparatus according to the present invention, Figure 11 is an exploded perspective view of the moisture and contaminant removing apparatus according to the present invention to be. As shown, the moisture and contaminant removal device 30 is largely the main body 31 and the main body cover 32, and the power supply unit 33, the thermoelectric element 34, the thermoelectric installed in the main body 31 A heat absorbing plate 35 attached to the heat absorbing portion of the element 34, a heat sink 36 attached to the heat radiating portion of the thermoelectric element 34, an induction fin 37 for inducing air flow, and the heat absorbing plate 35. It is composed of a collecting unit 38 for collecting the condensed water condensed in) and a sensor unit (not shown).

The heat absorbing plate 35 attached to the heat absorbing surface of the thermoelectric element 34 cools the air to remove moisture. A plurality of fins are formed in the heat absorbing plate 35 in parallel in the front-rear direction. In addition, the heat sink 36 attached to the bottom heating surface of the thermoelectric element 34 dissipates heat. Therefore, the heat generated from the heat dissipation surface is discharged to the outside by the heat conduction of the heat dissipation plate 36. And the air discharged to the outside through the heat sink 36 is heated. On the other hand, the water collecting port 38 of the thermoelectric element 34 is contaminated because the condensate formed by the moisture contained in the incoming air in contact with the heat absorbing plate 35 is collected together with contaminants such as dust contained in the outside air. Remove it. The condensed water is discharged to the outside of the cabinet 11 through the collecting part 38. Subsequently, the air dried by the heat absorbing plate 35 is heated again while passing through the heat sink 36 and the power supply 33, and discharged into the power board through the air outlet. Reference numerals 31 and 32 denote the main body 31 and the main body cover 32 to support the power supply unit 33, the thermoelectric element 34, the heat absorbing plate 35, and the heat sink 36, and to control the flow of external air. It serves as a guide.

Meanwhile, in order to remove moisture and contaminants in the bus chamber 13 as well as the device chamber 15, an air passage for circulating air in the bus chamber 13 should be formed in the horizontal bulkhead 12. That is, as shown in Figure 4 or 5, the horizontal partition 12 has a plurality of air circulation holes 56 are formed. At this time, the air circulation hole 56 is formed as small as possible so that the horizontal partition wall 12 can maintain the space and the electromagnetic shielding function.

Accordingly, when the size of the air circulation hole 56 is increased, as shown in FIG. 12, a predetermined valve body 60 is installed in the air circulation hole 56. The valve body 60 includes a valve body 67 having a size capable of closing the air circulation hole 56, a pressure plate 65 formed at an upper end of the valve body 67, and the pressure plate 65. ) Is composed of a pressing spring 66 which always presses upwards. At this time, the bottom surface of the valve body 67 is extended to a predetermined length to prevent separation. Therefore, in the normal state, the valve body 60 opens the air circulation hole 56. However, when the internal pressure of the bus chamber 13 increases momentarily, the pressure spring 66 is compressed by the pressure applied to the pressure plate 65 so that the valve body 67 opens the air circulation hole 56. Will be closed. Therefore, the high-pressure gas or spark generated in the neighboring high density closed switch board 10 and introduced into the bus chamber 13 may not flow into the device chamber 15.

Subsequently, a plurality of gas discharge devices 70 for discharging high-pressure gas introduced into the bus chamber 13 are installed in the ceiling of the bus chamber 13. That is, the high pressure gas generated in the highly integrated closed cabinet 10 may destroy the highly integrated closed cabinet. Therefore, in order to protect the highly integrated closed power switchboard from the high temperature and high pressure gas generated at the time of explosion, the gas discharge device 70 is installed in the ceiling of the bus chamber chamber 13. As shown in FIG. 13, the gas discharge device 70 has a gas discharge port 73 formed to communicate with the busbar chamber 13 and a pressure discharge plate having a predetermined size so as to close the gas discharge port 73. 74 and a plastic bolt 75 for fixing the pressure plate 74 to the top plate of the highly integrated closed power panel 10. At this time, the plastic bolt 75 is damaged by a predetermined pressure or more so that the pressure-pressure plate 74 can be separated to the outside. Therefore, when an explosion accident occurs in the equipment chamber 15 and the internal pressure rises, the horizontal bulkhead 12 escapes to the busbar chamber 13 and the high-pressure gas therein is discharged to the busbar chamber 13.

Therefore, when the internal pressure of the bus chamber chamber 13 is increased by the high pressure gas introduced into the bus chamber 13, the pressure-dissipating plate 74 is released to the outside to quickly discharge the high pressure gas to the outside. At this time, a portion of the high-pressure gas introduced into the busbar chamber 13 is introduced into the busbar chamber 13 of the neighboring high density closed switch board through the opening portion 26 and the internal pressure of the busbar chamber 13 rises. In addition, the pressure plate 74 of the busbar chamber 13 is also separated to discharge the high pressure gas. When the gas discharge port 73 is opened and the high-pressure gas is quickly released, the pressure inside the highly integrated closed cabinet 10 is lowered to prevent breakage of the highly integrated closed cabinet 10.

Subsequently, FIG. 14 shows another embodiment of the gas discharge device 70 according to the present invention. That is, the gas discharge device 70 is installed along the periphery of the gas discharge port 73 and the gas discharge port 73 formed so as to communicate with the busbar chamber 13 to guide the high pressure gas ( 76, a hinge 77 provided on one side of the guide frame 76, the pressure-pressure plate 74 is rotatably installed through the hinge 77, and integral with the outer end of the pressure plate (74) It consists of an elastic plate 78 of a predetermined length. At this time, the elastic plate 78 is made of non-combustible rubber or silicon, and when the pressure-pressure plate 74 is rotated, the free end of the elastic plate 78 is in contact with the top plate of the highly integrated closed power panel. . Therefore, the elastic plate 78 limits the rotation angle of the pressure plate 74.

In addition, the elastic plate 78 pressurizes the pressure-pressure plate 74 rotated upwards by a predetermined angle in the opposite direction, so that the gas discharge port 73 automatically when the pressure inside the bus chamber 13 drops. To close it. In this way, the gas discharge device 70 according to the present embodiment is not only to prevent the operator from being injured by the pressure plate which is scattered because the pressure plate 74 is rotated in a state that flashover accident does not occur completely, A life accident can be prevented by limiting the ejecting direction of the high pressure gas or the flame in accordance with the installation direction of the pressure plate 74.

As described above, the highly integrated closed power panel according to the present invention is provided with a horizontal bulkhead in each of the highly integrated closed power panels to partition the mother room and the equipment room, and install at least one gas outlet communicating with the mother room. In the event of a fault or accident, the high-temperature, high-pressure gas or vapor generated in one of the highly integrated closed cabinets is prevented from sequentially spreading throughout the special platen.

In addition, the present invention is to install a plurality of vertical bushings in the horizontal bulkhead installed inside the highly integrated closed switchgear to electrically connect the busbar of the busbar and the equipment room to prevent the spread of fire through the busbar and made of a ground metal plate By using the horizontal bulkhead to shorten the separation distance between phases to minimize the size of the highly integrated closed power panel.

The present invention also installs a water and contaminant removal device inside the high density closed cabinet to remove moisture and contaminant particles inside the high density closed cabinet, thereby increasing the flashover voltage, and insulating tube or epoxy having excellent insulation and flame retardancy. Powder coating treatment prevents flashover accidents.

Claims (8)

In the high-density closed cabinet, which forms an internal space and has various power devices such as buses, breakers, and disconnectors installed therein, It is installed inside the highly integrated closed switchgear to divide the mother room with a plurality of bus bar is installed and the equipment room is installed a variety of power equipment, so that when the pressure inside the equipment room rises to be separated toward the bus A horizontal partition wall fixed to the upper surface of the bent portion of the support bracket installed on the inner side of the highly integrated closed power panel using a plastic bolt and having a plurality of air circulation holes to circulate air in the mother compartment and the equipment compartment; It is installed perpendicular to the horizontal bulkhead so as to electrically connect the bus bar installed in the bus chamber and the power equipment installed in the equipment room, and the upper bushing portion projecting toward the bus chamber, and protrudes toward the equipment room through the horizontal bulkhead. A plurality of vertical bushings including a lower bushing portion and a supporting member for penetrating the through-holes formed in the horizontal partition wall to integrally fix the upper bushing portion and the lower bushing portion; And a plurality of gas discharge devices comprising a gas discharge port formed to communicate with the busbar chamber, a pressure discharge plate having a size capable of closing the gas discharge port, and a plastic bolt fixing the pressure discharge plate installed on the gas discharge port. Became; The high temperature and high pressure gas or flame generated in the equipment room is quickly discharged to the outside of the high density closed switch board through the air circulation hole of the horizontal bulkhead and the gas discharge device of the mother chamber, while High-temperature, high-pressure gas or spark is blocked by the horizontal partition wall is not integrated into the equipment compartment, characterized in that the high-power closed cabinet. The method of claim 1, The plastic bolt fixing the horizontal bulkhead and the pressure plate is damaged when the pressure of the high-pressure gas discharged when the flashover accident occurs in the equipment room is applied. delete The method of claim 1, The air circulation hole formed in the horizontal partition wall is punctured to be spaced apart from the through-hole in which the vertical bushing is installed, and allows the air in the bus chamber and the equipment chamber to circulate, and the bus chamber and the equipment chamber can be shielded space and electromagnetically. Highly integrated closed power panel, characterized in that formed by. delete The method of claim 1, The gas discharge device includes a high-pressure gas guide frame installed vertically along the periphery of the gas discharge port and a pressure plate is installed at an upper end thereof, and a hinge installed at one side of the guide frame to rotatably support the pressure plate; It includes an elastic plate which is integrally fixed to the outer end of the pressure-pressure plate installed on the gas discharge port, so that the pressure-pressure plate is not completely released by the high pressure gas released when a flashover accident occurs, as well as the room And a pressure limiting plate which automatically limits the rotation angle of the platen and presses the pressure plate in the opposite direction when the pressure inside the bus chamber drops. The method of claim 1, Inside the equipment room, the air is removed by using a heat absorbing plate installed on the heat absorbing surface of the thermoelectric element to remove moisture, and the air cooled by using a heat generating plate installed on the heat generating surface of the thermoelectric element is generated from the heat absorbing plate. Highly integrated closed water board characterized in that the moisture and contaminant removal device for removing the contaminants contained in the air by using the condensed water is installed more. The method of claim 1, The air circulation hole is further provided with a valve body composed of a valve body having a size capable of closing the air circulation hole, and a pressure spring for pressing the valve body always upwards, if the internal pressure of the bus chamber increases, Highly integrated closed switchgear characterized in that the compression spring is compressed to close the air circulation hole.

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