Automatic cabinet for monitoring auxiliary power supply

Abstract

The invention relates to the technical field of power supply detection cabinets, and discloses an automatic cabinet for auxiliary power supply monitoring, a power supply cabinet and a vertical seat, the power supply cabinet is provided with an air inlet end and an air outlet end, the power supply cabinet comprises an outer cabinet body and a power supply module, the power supply module is arranged in the outer cabinet body, and the outer cabinet body and the power supply module are connected through a sliding assembly. The two power supply cabinets are connected through a vertical seat, the vertical seat is provided with two air outlet ends, the air inlet ends of the power supply cabinets are communicated with the air outlet ends of the vertical seat, the power supply cabinets are installed on the ground through a bottom frame and connected with the detection cabinet through a connecting frame, and the vertical seat is communicated with an air inlet piece. The power supply cabinet and the detection cabinet are of a split structure, the detection cabinet is connected with the multiple power supply cabinets, the multiple power supply cabinets are monitored through the detection cabinet, in addition, the split structure is flexible in combination mode, and different power supply requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of power supply detection cabinets, in particular to an automation cabinet for auxiliary power supply monitoring. Background Art

[0002] The working principle of the auxiliary power supply system involves real-time monitoring of the status of the main power supply, including parameters such as voltage, frequency, waveform, etc. Once an abnormality in the main power supply is detected, the system will start the backup power supply and automatically switch in a short time to maintain the normal operation of the equipment.

[0003] Different components inside the automation cabinet generate different temperatures when working. Since the automation cabinet is often an integral structure, the components that generate high temperature have a great impact on the temperature of other areas.

[0004] The auxiliary power supply generates heat when working. If the heat dissipation is insufficient, it may cause the temperature to be too high, affecting the stability and life of the power supply. The existing automation cabinet uses two sets of air intake fans installed relatively to allow external air to flow through the interior of the automation cabinet to dissipate heat inside the automation cabinet. However, due to the large difference in external temperature in different seasons, in the high temperature environment in summer, the external air temperature is high, which is not conducive to the heat dissipation inside the automation cabinet. Summary of the invention

[0005] The object of the present invention is to provide an automation cabinet for auxiliary power monitoring to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is an automation cabinet for auxiliary power monitoring, comprising:

[0008] A power cabinet, the power cabinet having an air inlet and an air outlet, the power cabinet comprising an outer cabinet and a power module, the power module being arranged inside the outer cabinet, and the outer cabinet and the power module being connected via a sliding assembly;

[0009] An air inlet is provided on one side of the outer cabinet, and the air inlet is the air inlet end of the outer cabinet. An opening is provided on the other side of the outer cabinet, and the opening is distributed correspondingly to the air inlet. Four sets of sliding components are installed on the inner wall of the outer cabinet, and a power module is installed between the four sets of sliding components. A fan component is installed on one side of the power module, and a fixing pin is installed on the outer side of the outer cabinet. When the power module is completely located in the outer cabinet, a limiting groove corresponding to the fixing pin is opened on the fan component, and the fan component is fitted in the opening of the outer cabinet;

[0010] When installing or repairing the power module, the power module is pulled out as a whole for easy maintenance. The power module adopts the 611D power module. The main function of the power module is to generate the auxiliary control power required for system control, such as ±24V DC, ±15VDC and 5V DC power. The auxiliary power supply can also be used as the power supply for the CCU or NCU of the numerical control system.

[0011] Through holes are provided on two opposite sides of the power module, so that the air inside the stand can enter the power module through the through holes, flow out through the through holes on the other side, and pass through the fan assembly;

[0012] The air flows through the power module to dissipate heat inside the power module.

[0013] The fan assembly includes a rectangular frame and a fan, the fan is installed in the rectangular frame, and the rectangular frame is fixed on the side of the power module;

[0014] The fixing pin passes through the outer cabinet and is installed in the limiting groove to limit and fix the power module.

[0015] Further, a group of the sliding components includes two connecting seats and a guide rod, a guide rod is installed between the two connecting seats, the connecting seat is fixed on the inner wall of the outer cabinet, a slider is installed on the outer side of the power module, the slider is distributed correspondingly to the guide rod, and the slider slides along the guide rod, and a plurality of strip grooves are opened on the outer side surface of the power module, and the ends of the strip grooves are connected to the inside of the fan assembly;

[0016] The connection seat is limitedly matched with the outer side of the power module, and the power module is supported at the same time;

[0017] The strip groove and the inner wall bracket of the outer cabinet form a channel, and part of the air flowing out of the stand moves toward the fan assembly through the channel. At the same time, the heat dissipation air passes through the outer side of the inner side of the fan assembly, further improving the heat dissipation effect.

[0018] A stand, wherein the two power cabinets are connected via the stand, and the stand has two air outlets, and the air inlet of the power cabinet is connected to the air outlet of the stand;

[0019] The power cabinet is installed on the ground through a base frame, and the power cabinet is connected to the detection cabinet through a connecting frame;

[0020] The stand is connected with an air inlet component.

[0021] Furthermore, the upper and lower ends of the stand are provided with connection ports, the connection port at the lower end is connected to a column, and the connection port at the upper end is connected to an air inlet, an inner tube body is installed inside the column, and the top end of the inner tube body extends to the inside of the air inlet.

[0022] The air inlet member comprises a barrel-shaped shell, a filter cotton core is installed in the barrel-shaped shell, and a plurality of through grooves are opened on the outer surface of the barrel-shaped shell;

[0023] The upright post is inserted into the ground;

[0024] The external air enters the interior of the stand through the air intake piece, and the air is filtered and dusted through the air intake piece. The incoming air moves downward along the inner tube body and passes through the annular groove formed between the column and the inner tube body. At the same time, the outer surface of the inner tube body is provided with spiral blades located in the annular groove, which prolongs the path of the air flow, thereby increasing the heat exchange time.

[0025] Since the temperature deep underground fluctuates less than that of the air, the internal temperature of the power module is kept stable.

[0026] The part of the column located on the ground and the outer side of the seat are covered with thermal insulation cotton to reduce the heat exchange between the external air and the internal air through the outside of the column and the seat.

[0027] Furthermore, air outlets are arranged on opposite sides of the stand, and the air outlets are the air outlet ends of the stand. A valve assembly is installed in the air outlet, and the power module retracted into the outer cabinet pushes the valve assembly to open;

[0028] The air entering through the valve assembly flows to one side along the provided valve assembly.

[0029] Furthermore, a cross bar is provided in the middle of the air outlet, and valve assemblies are installed on both the upper and lower sides of the cross bar, and the two groups of valve assemblies are symmetrically distributed.

[0030] Further, the valve assembly includes a U-shaped frame, the U-shaped frame is clamped on the outside of the cross bar, the U-shaped frame and the cross bar are connected by a spring, a first baffle and a second baffle are installed in the air outlet, the first baffle and the second baffle are connected by a connecting rod, and the end of the U-shaped frame is connected to the first baffle by a pull rod;

[0031] The power module is completely retracted into the outer cabinet, and the inner side of the power module pushes the U-shaped frame to compress the spring, so that the movable U-shaped frame drives the first baffle to rotate through the pull rod, and the rotating first baffle drives the second baffle to rotate through the connecting rod, so that the two sides of the air outlet are connected;

[0032] When the power module is pulled out, the U-shaped frame is reset under the action of the spring until the pull rod is attached to the surface of the U-shaped frame. At this time, the air outlet is closed by the first baffle and the second baffle;

[0033] Solve the problem of heat dissipation air leakage during maintenance.

[0034] Furthermore, further, the power supply cabinets are stacked in a vertical direction, and the detection cabinet is connected to the interiors of multiple power supply cabinets.

[0035] Install different numbers of power cabinets according to usage requirements.

[0036] The present invention has the following beneficial effects:

[0037] (1) The power cabinet and the detection cabinet of the present invention adopt a split structure. The detection cabinet is connected to multiple power cabinets, so that the detection cabinet can monitor multiple power cabinets. In addition, the split structure can be flexibly combined to meet different power supply requirements. At the same time, the high-temperature air generated in the power cabinet does not enter the interior of the detection cabinet.

[0038] (2) Through holes are provided on two opposite side surfaces of the power module of the present invention, so that the air inside the stand can enter the interior of the power module through the through holes, flow out through the through holes on the other side, and pass through the fan assembly. The air flows through the power module to dissipate heat inside the power module. The strip groove and the inner wall bracket of the outer cabinet form a channel. Part of the air flowing out of the stand moves toward the fan assembly through the channel. At the same time, the heat dissipating air passes through the outer side surface of the inner side of the fan assembly, thereby further improving the heat dissipation effect.

[0039] (3) The power module of the present invention is completely retracted into the outer cabinet, and the inner side of the power module pushes the U-shaped frame to compress the spring, so that the movable U-shaped frame drives the first baffle to rotate through the pull rod, and the rotating first baffle drives the second baffle to rotate through the connecting rod, so that the two sides of the air outlet are connected. When the power module is pulled out, the U-shaped frame is reset under the action of the spring until the pull rod is attached to the surface of the U-shaped frame. At this time, the air outlet is closed by the first baffle and the second baffle, which solves the problem of heat dissipation air leakage during maintenance.

[0040] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the system of the present invention;

[0043] Figure 2 It is an overall front view of the present invention;

[0044] Figure 3 It is an overall schematic diagram of the present invention;

[0045] Figure 4 For the present invention Figure 3 Schematic cross-sectional view of ;

[0046] Figure 5 For the present invention Figure 4 A magnified schematic diagram of point A;

[0047] Figure 6 This is a front schematic diagram of the power cabinet of the present invention;

[0048] Figure 7 This is a schematic diagram of the back side of the power cabinet of the present invention;

[0049] Figure 8 This is a schematic diagram of the connection between the power cabinet and the stand of the present invention;

[0050] Fig. 9 This is a schematic diagram of the cooperation between the power module and the sliding assembly of the present invention;

[0051] Fig.10 This is a schematic diagram of the installation of the stand of the present invention;

[0052] Fig.11 It is a schematic diagram of the stand of the present invention;

[0053] Fig.12 A schematic diagram of a valve assembly of the present invention;

[0054] Fig.13 This is a schematic diagram of Embodiment 2 of the present invention;

[0055] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0056] In the figure: 1. power cabinet; 101. outer cabinet; 1011. air inlet; 102. power module; 1021. strip groove; 103. fan assembly; 104. limit groove; 105. connecting seat; 106. guide rod; 107. slider; 108. fixing pin; 2. stand; 201. air outlet; 202. cross block; 3. base frame; 4. connecting frame; 5. detection cabinet; 6. air inlet; 7. valve assembly; 701. U-shaped frame; 702. spring; 703. first baffle; 704. second baffle; 705. connecting rod; 706. pull rod; 8. column; 9. inner tube. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] like Figure 1 As shown, an auxiliary power supply monitoring automation cabinet is used to monitor the operating status of auxiliary power supply equipment and realize automatic control system;

[0059] A data acquisition unit is installed in the power cabinet 1, and a data processing unit and a display terminal are installed in the detection cabinet 5;

[0060] The data acquisition unit includes a temperature sensor. According to the specific requirements of the monitoring environment, a suitable temperature sensor is selected, such as PT100, thermoelectric;

[0061] The temperature data measured by the sensor is converted into a usable signal and transmitted to a data processing unit (such as ARTM-8, ARTM-24) and a display terminal (such as ARTM-Pn, ASD320) through an appropriate communication protocol (such as Modbus-RTU, Modbus-TCP), and the data processing unit is connected to the fan assembly 103;

[0062] The operating temperature range of monitoring auxiliary power equipment is usually between -5℃ and +40℃. For indoor distribution cabinets, the ambient temperature should be between -5℃ and +40℃, while for outdoor distribution cabinets, the ambient temperature should be between -25℃ and +40℃1.

[0063] The impact of temperature on monitoring auxiliary power supply equipment is mainly reflected in the following aspects:

[0064] Effect of high temperature: High temperature may cause the electronic components in the power cabinet to overheat, affecting their performance and life. In a high temperature environment, the temperature in the power cabinet may exceed the specified ambient temperature, causing the electrical components to overheat and malfunction.

[0065] Effect of low temperature: Too low temperature may cause the power cabinet to operate unstably or even malfunction. Although the impact of low temperature on the power cabinet is not as obvious as that of high temperature, you still need to pay attention to it in extremely low temperature.

[0066] The set rated operating temperature is between 0° C. and 30° C. When the temperature inside the power cabinet 1 deviates from the rated operating temperature range, the fan assembly 103 is started to replace the air inside the power cabinet 1 .

[0067] Example 1

[0068] like Figure 2-Figure 12 As shown, an automation cabinet for auxiliary power monitoring includes:

[0069] The power cabinet 1 has an air inlet and an air outlet. The power cabinet 1 includes an outer cabinet 101 and a power module 102. The power module 102 is arranged inside the outer cabinet 101. The outer cabinet 101 and the power module 102 are connected by a sliding assembly.

[0070] An air inlet 1011 is provided on one side of the outer cabinet 101, and the air inlet 1011 is the air inlet end of the outer cabinet 101. An opening is provided on the other side of the outer cabinet 101, and the opening is distributed correspondingly to the air inlet 1011. Four sets of sliding components are installed on the inner wall of the outer cabinet 101, and a power module 102 is installed between the four sets of sliding components. A fan component 103 is provided on one side of the power module 102, and a fixing pin 108 is installed on the outer side of the outer cabinet 101. When the power module 102 is completely located in the outer cabinet 101, a limiting groove 104 corresponding to the fixing pin 108 is opened on the fan component 103, and the fan component 103 is matched in the opening of the outer cabinet 101;

[0071] When installing or repairing the power module 102, the power module 102 is pulled out as a whole for easy maintenance. The power module 102 uses the 611D power module to generate auxiliary control power required for system control, such as ±24VDC, ±15V DC and 5V DC power;

[0072] Through holes are provided on two opposite sides of the power module 102, so that the air inside the stand 2 enters the power module 102 through the through holes, flows out through the through holes on the other side, and passes through the fan assembly 103;

[0073] By allowing air to flow through the power module 102, heat is dissipated inside the power module 102;

[0074] The fan assembly 103 includes a rectangular frame and a fan, the fan is installed in the rectangular frame, and the rectangular frame is fixed on the side of the power module 102;

[0075] The fixing pin 108 passes through the outer cabinet 101 and is installed in the limiting groove 104 to limit and fix the power module 102 .

[0076] A set of sliding components includes two connecting seats 105 and a guide rod 106. The guide rod 106 is installed between the two connecting seats 105. The connecting seat 105 is fixed on the inner wall of the outer cabinet 101. A slider 107 is installed on the outer side of the power module 102. The slider 107 is distributed correspondingly to the guide rod 106. At the same time, the slider 107 slides along the guide rod 106. A plurality of strip grooves 1021 are opened on the outer side of the power module 102. The ends of the strip grooves 1021 are connected to the inside of the fan assembly 103.

[0077] The connection seat 105 is limitedly matched with the outer side surface of the power module 102, and the power module 102 is supported at the same time;

[0078] The strip groove 1021 and the inner wall bracket of the outer cabinet 101 form a channel, and part of the air flowing out of the stand 2 moves toward the fan assembly 103 through the channel. At the same time, the heat dissipation air passes through the outer side surface of the inner side of the fan assembly 103, further improving the heat dissipation effect.

[0079] The two power cabinets 1 are connected via the stand 2, and the stand 2 has two air outlets, and the air inlet of the power cabinet 1 is connected to the air outlet of the stand 2;

[0080] The power cabinet 1 is installed on the ground through a base frame 3, and the power cabinet 1 is connected to the detection cabinet 5 through a connecting frame 4;

[0081] The power cabinet 1 and the detection cabinet 5 adopt a split structure, which is connected to multiple power cabinets 1 through the detection cabinet 5, so that the detection cabinet 5 can monitor multiple power cabinets 1. In addition, the split structure combination method is flexible to meet different power supply requirements. The power cabinet 1 and the detection cabinet 5 are connected by a hose, and the wires enter other cabinets through the hose.

[0082] The stand 2 is connected to an air inlet 6 .

[0083] The upper and lower ends of the stand 2 are provided with connection ports, the connection port at the lower end is connected to the column 8, and the connection port at the upper end is connected to the air inlet 6. An inner tube body 9 is installed inside the column 8, and the top end of the inner tube body 9 extends to the inside of the air inlet 6.

[0084] The air inlet member 6 comprises a barrel-shaped shell, a filter cotton core is installed in the barrel-shaped shell, and a plurality of through grooves are formed on the outer surface of the barrel-shaped shell.

[0085] The upright post 8 is inserted into the ground.

[0086] The external air enters the interior of the stand 2 through the air inlet 6, and the air inlet 6 is filtered and dusted. The air moves downward along the inner tube 9 and passes through the annular groove formed between the column 8 and the inner tube 9. At the same time, the outer surface of the inner tube 9 is provided with a spiral blade located in the annular groove, which extends the path of the air flow, thereby increasing the heat exchange time.

[0087] Since the temperature deep underground fluctuates less than the temperature of the air, the internal temperature of the power module 102 is kept stable;

[0088] The part of the column 8 located on the ground and the outer side of the seat 2 are covered with thermal insulation cotton to reduce the heat exchange between the external air and the internal air through the column 8 and the outside of the seat 2.

[0089] Air outlets 201 are arranged on opposite sides of the stand 2. The air outlets 201 are the air outlet ends of the stand 2. A valve assembly is installed in the air outlet 201. The power module 102 retracted into the outer cabinet 101 pushes the valve assembly to open.

[0090] The air entering through the valve assembly flows to one side along the provided valve assembly.

[0091] A cross bar 202 is provided in the middle of the air outlet 201 , and valve assemblies 7 are installed on both the upper and lower sides of the cross bar 202 , and the two groups of valve assemblies 7 are symmetrically distributed.

[0092] The valve assembly 7 includes a U-shaped frame 701, which is clamped on the outer side of the cross bar 202. The U-shaped frame 701 and the cross bar 202 are connected by a spring 702. A first baffle 703 and a second baffle 704 are installed in the air outlet 201. The first baffle 703 and the second baffle 704 are connected by a connecting rod 705. The end of the U-shaped frame 701 is connected to the first baffle 703 by a pull rod 706.

[0093] The power module 102 is completely retracted into the outer cabinet 101, and the inner side of the power module 102 pushes the U-shaped frame 701 to compress the spring 702, so that the movable U-shaped frame 701 drives the first baffle 703 to rotate through the pull rod 706, and the rotating first baffle 703 drives the second baffle 704 to rotate through the connecting rod 705, so that the two sides of the air outlet 201 are connected;

[0094] When the power module 102 is pulled out, the U-shaped frame 701 is reset under the action of the spring 702 until the pull rod 706 is attached to the surface of the U-shaped frame 701. At this time, the air outlet 201 is closed by the first baffle 703 and the second baffle 704.

[0095] Solve the problem of heat dissipation air leakage during maintenance.

[0096] Example 2

[0097] like Fig.13 As shown, the difference from Example 2 of Example 1 is:

[0098] The power cabinets 1 are stacked in a vertical direction, and the detection cabinet 5 is connected to the interior of the plurality of power cabinets 1 .

[0099] Different numbers of power cabinets 1 are installed according to usage requirements.

[0100] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automation cabinet for auxiliary power monitoring, characterized in that: include: A power supply cabinet (1), the power supply cabinet (1) having an air inlet end and an air outlet end; The power cabinet (1) comprises an outer cabinet (101) and a power module (102); the power module (102) is arranged inside the outer cabinet (101); and the outer cabinet (101) and the power module (102) are connected via a sliding assembly; A stand (2), wherein the two power cabinets (1) are connected via the stand (2); The stand (2) has two air outlets, and the air inlet of the power cabinet (1) is connected to the air outlet of the stand (2); The power cabinet (1) is installed on the ground via a base frame (3), and the power cabinet (1) is connected to a detection cabinet (5) via a connecting frame (4); The stand (2) is connected to an air inlet (6).

2. The auxiliary power monitoring automation cabinet according to claim 1, characterized in that: An air inlet (1011) is provided on one side surface of the outer cabinet (101), and the air inlet (1011) is the air inlet end of the outer cabinet (101); The other side of the outer cabinet (101) is provided with an opening, and the opening is distributed correspondingly to the air inlet (1011); Four groups of sliding components are installed on the inner wall of the outer cabinet (101), and power modules (102) are installed between the four groups of sliding components; A fan assembly (103) is provided on one side surface of the power module (102), and a fixing pin (108) is installed on the outer side surface of the outer cabinet (101); when the power module (102) is completely located in the outer cabinet (101), a limiting groove (104) corresponding to the fixing pin (108) is provided on the fan assembly (103), and the fan assembly (103) is fitted in an opening of the outer cabinet (101).

3. The auxiliary power monitoring automation cabinet according to claim 2, characterized in that: A set of the sliding components comprises two connecting seats (105) and a guide rod (106), the guide rod (106) being installed between the two connecting seats (105), and the connecting seats (105) being fixed on the inner wall of the outer cabinet (101); A slider (107) is installed on the outer side of the power module (102), the slider (107) is distributed correspondingly to the guide rod (106), and the slider (107) slides along the guide rod (106); A plurality of strip-shaped grooves (1021) are provided on the outer surface of the power module (102), and the ends of the strip-shaped grooves (1021) are connected to the inside of the fan assembly (103).

4. The auxiliary power monitoring automation cabinet according to claim 1, characterized in that: The upper and lower ends of the stand (2) are both provided with connection openings; The connection port at the lower end is connected to a column (8), and the connection port at the upper end is connected to an air inlet member (6); An inner tube body (9) is installed inside the column (8), and the top end of the inner tube body (9) extends to the inside of the air inlet member (6).

5. The auxiliary power monitoring automation cabinet according to claim 4, characterized in that: The air inlet member (6) comprises a barrel-shaped housing, in which a filter cotton core is installed; A plurality of through grooves are arranged on the outer side surface of the barrel-shaped shell.

6. The auxiliary power monitoring automation cabinet according to claim 4, characterized in that: The upright post (8) is inserted into the ground.

7. The auxiliary power monitoring automation cabinet according to claim 1, characterized in that: Air outlets (201) are arranged on opposite sides of the stand (2), and the air outlets (201) are the air outlet ends of the stand (2); A valve assembly is installed in the air outlet (201), and the power module (102) retracted into the outer cabinet (101) pushes the valve assembly to open.

8. The automatic cabinet for monitoring auxiliary power supply according to claim 1, characterized in that: A horizontal block (202) is provided in the middle of the air outlet (201); Valve assemblies (7) are installed on both the upper and lower sides of the cross block (202), and the two groups of valve assemblies (7) are symmetrically distributed.

9. The auxiliary power monitoring automation cabinet according to claim 8, characterized in that: The valve assembly (7) comprises a U-shaped frame (701), the U-shaped frame (701) is clamped on the outer side of the cross bar (202), and the U-shaped frame (701) and the cross bar (202) are connected via a spring (702); A first baffle (703) and a second baffle (704) are installed in the air outlet (201), and the first baffle (703) and the second baffle (704) are connected via a connecting rod (705); The end of the U-shaped frame (701) is connected to the first baffle (703) via a pull rod (706).

10. The auxiliary power monitoring automation cabinet according to claim 1, characterized in that: The power cabinets (1) are stacked in a vertical direction; The detection cabinet (5) is in communication with the interior of a plurality of power supply cabinets (1).

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