Switch cabinet with fire extinguishing structure

Abstract

The utility model discloses a switch cabinet with a fire extinguishing structure, which comprises a cabinet body, an exhaust fan, a ventilation shutter structure, a nitrogen spraying assembly, a fire extinguishing assembly and a control box, the exhaust fan is arranged on one side wall of the cabinet body, and the ventilation shutter structure is arranged on the other side wall of the cabinet body. The ventilation louver structure comprises a plurality of outwards-opened louver blades and a driving rod assembly for driving the louver blades to be outwards opened, the nitrogen spraying assembly comprises a nitrogen tank, a connecting branch pipe, a nitrogen main discharging pipe and an exhaust branch pipe, and the fire extinguishing assembly comprises a carbon dioxide tank, a second connecting branch pipe, a carbon dioxide main pipe and a spraying branch pipe. According to the utility model, the exhaust branch pipes are inserted into different positions in the cabinet body, when the infrared sensor senses that a corresponding dimension reaches a fire temperature point, the nitrogen tank is started to correspondingly spray nitrogen to dilute air, flame retardance is carried out, the ventilation shutter structure is closed, ventilation is not carried out inwards, and the carbon dioxide system is started to spray carbon dioxide for fire extinguishment to extinguish fire quickly; accurate positioning can be achieved, and the fire extinguishing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a switch cabinet with a fire extinguishing structure. Background Art

[0002] The main function of the switch cabinet is to open and close, control and protect electrical equipment during the power generation, transmission, distribution and energy conversion of the power system. Although the existing switch cabinet can meet the production use. However, its fire extinguishing function is not perfect. Once the electrical components in the switch cabinet are short-circuited, it is easy to break the electrical energy and cause the electrical components in the switch cabinet to catch fire, causing a fire, thereby causing immeasurable losses in production. Generally, the switch cabinet is closed and only dissipates heat through exhaust. However, in the event of a fire, the air permeability inside the cabinet will quickly expand the fire, which is not conducive to fire extinguishing inside the cabinet. The general fire extinguishing method is to replace the inert gas inside the cabinet or install an automatic fire extinguisher. Due to the inability to accurately locate, the fire extinguishing efficiency is low and the fire extinguishing speed is slow. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a switch cabinet with a fire extinguishing structure, which solves the problems that the switch cabinet does not have a fire extinguishing function, can extinguish fire immediately, cannot extinguish fire quickly, and can accurately locate fire extinguishing.

[0004] According to the utility model, a switch cabinet with a fire extinguishing structure comprises a cabinet body, an exhaust fan, a ventilation shutter structure, a nitrogen gas ejection assembly, a fire extinguishing assembly and a control box. An exhaust fan is arranged on one side wall of the cabinet body, and a ventilation shutter structure is arranged on the other side wall. The ventilation shutter structure comprises a plurality of shutter blades opened outwardly and a driving rod assembly for driving the shutter blades to open outwardly. The nitrogen gas ejection assembly comprises a nitrogen tank, a connecting branch pipe, a nitrogen main exhaust pipe and an exhaust branch pipe. A nitrogen tank is arranged at a corner near the rear side wall at the bottom of the cabinet body, and a nitrogen main exhaust pipe is fixed at a middle position of the rear side wall of the cabinet body. The gas outlet of the nitrogen tank is connected to one end of the connecting branch pipe through a hose, and the other end of the connecting branch pipe is connected to the nitrogen main exhaust pipe. A plurality of exhaust branch pipes are arranged at equal intervals on the pipe, and the air outlets of the exhaust branch pipes face the interior of the cabinet, a first solenoid valve is arranged in each of the exhaust branch pipes, the fire extinguishing assembly comprises a carbon dioxide tank, a second connecting branch pipe, a carbon dioxide main pipe and a spray branch pipe, the carbon dioxide tank is arranged at another corner at the bottom of the cabinet body near the rear side wall, the air outlet of the carbon dioxide tank is connected to one end of the second connecting branch pipe through a hose, and the other end of the second connecting branch pipe is connected to the carbon dioxide main pipe, spray branch pipes are arranged at equal intervals on the carbon dioxide main pipe, and the air outlets of the spray branch pipes face the interior of the cabinet, a second solenoid valve is arranged in each of the spray branch pipes, and the controller in the control box is electrically connected to all the first solenoid valves, the second solenoid valves and the drive rod assembly.

[0005] In some embodiments of the utility model, the driving rod assembly includes a driving cylinder, a push rod and multiple rotating rods, the cylinder shaft of the driving cylinder is connected to a downward push rod, the push rod is sleeved with a limiting sleeve, one end of the rotating rod is rotatably connected to the push rod, and the other end of the rotating rod is rotatably connected to the inner side wall of the bottom edge of the louver blade.

[0006] In other embodiments of the present invention, when the louver blades are opened outward, the angle between them and the side wall of the cabinet is no more than 30°.

[0007] In other embodiments of the utility model, the outlet end of the exhaust branch pipe is provided with four outlet holes arranged along the pipe wall, and infrared sensors are provided at the center positions of the four outlet holes, and the infrared sensors are electrically connected to the controller in the control box.

[0008] In other embodiments of the present invention, a temperature threshold is set in the controller, and when the infrared sensor detects that the temperature at a certain place in the cabinet reaches the threshold, the nitrogen spray component and the fire extinguishing component will be started.

[0009] In some other embodiments of the utility model, the air outlet of the spray branch pipe is a trumpet-shaped air outlet, and each of the spray branch pipes corresponds to multiple exhaust branch pipes on the nitrogen main exhaust pipe on multiple horizontal planes;

[0010] When the infrared sensor on the exhaust branch pipe senses that the temperature reaches a threshold value, the first solenoid valve in the exhaust branch pipe will be activated. At the same time, the controller will activate the second solenoid valve in the spray branch pipe in the same horizontal plane of the exhaust branch pipe to open.

[0011] In the utility model, each exhaust branch pipe is inserted into different positions inside the cabinet. When the infrared sensor senses that the corresponding dimension reaches the fire temperature point, the nitrogen tank will be started to spray nitrogen to dilute the air for flame retardancy. At the same time, the ventilation shutter structure is closed, and the ventilation is no longer inward. The gas is intelligently discharged through the exhaust fan, and the carbon dioxide system is started to spray carbon dioxide for fire extinguishing at the same time, which can quickly extinguish the fire, accurately locate, extinguish the fire quickly, and have high fire extinguishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 The present invention is a schematic structural diagram of a switch cabinet with a fire extinguishing structure.

[0014] Figure 2This is a structural schematic diagram of the ventilation shutter structure proposed by the utility model (closed state).

[0015] Figure 3 This is a structural schematic diagram of the ventilation shutter structure proposed by the utility model (open state).

[0016] Figure 4 This is a schematic diagram of the head structure of the exhaust branch pipe proposed by the utility model.

[0017] Figure 5 This is a schematic diagram of the head section structure of the exhaust branch pipe proposed by the utility model.

[0018] Figure 6 The utility model is a schematic diagram of the head section structure of the spray branch pipe.

[0019] In the figure: 1. cabinet; 2. exhaust fan; 3. louver blades; 31. rotating rod; 32. push rod; 321. limiting sleeve; 33. driving cylinder; 4. nitrogen tank; 41. connecting branch pipe; 5. nitrogen main exhaust pipe; 6. exhaust branch pipe; 61. air outlet; 62. infrared sensor; 63. first solenoid valve; 7. carbon dioxide tank; 71. second connecting branch pipe; 8. carbon dioxide main pipe; 9. spray branch pipe; 91. trumpet-shaped air outlet; 92. second solenoid valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Reference Figure 1-6A switch cabinet with a fire extinguishing structure comprises a cabinet body 1, an exhaust fan 2, a ventilation shutter structure, a nitrogen gas ejection assembly, a fire extinguishing assembly and a control box, wherein the cabinet body 1 is provided with an exhaust fan 2 on one side wall and a ventilation shutter structure on the other side wall, wherein the ventilation shutter structure comprises a plurality of shutter blades 3 opened outwardly and a driving rod assembly for driving the shutter blades 3 to open outwardly, wherein the nitrogen gas ejection assembly comprises a nitrogen tank 4, a connecting branch pipe 41, a nitrogen main exhaust pipe 5 and an exhaust branch pipe 6, wherein a nitrogen tank 4 is arranged at a corner of the bottom of the cabinet body 1 near the rear side wall, a nitrogen main exhaust pipe 5 is fixed at a middle position of the rear side wall of the cabinet body 1, an air outlet of the nitrogen tank 4 is connected to one end of the connecting branch pipe 41 through a hose, and the other end of the connecting branch pipe 41 is connected to the nitrogen main exhaust pipe 5, and a plurality of nitrogen main exhaust pipes 5 are arranged at equal intervals on the nitrogen main exhaust pipe 5 The exhaust branch pipe 6 has an air outlet facing the inside of the cabinet 1, and each of the exhaust branch pipes 6 is provided with a first solenoid valve 63. The fire extinguishing assembly includes a carbon dioxide tank 7, a second connecting branch pipe 71, a carbon dioxide main pipe 8 and a spray branch pipe 9. The carbon dioxide tank 7 is arranged at another corner of the bottom of the cabinet 1 near the rear side wall. The air outlet of the carbon dioxide tank 7 is connected to one end of the second connecting branch pipe 71 through a hose, and the other end of the second connecting branch pipe 71 is connected to the carbon dioxide main pipe 8. Spray branch pipes 9 are evenly spaced on the carbon dioxide main pipe 8, and the air outlet of the spray branch pipes 9 faces the inside of the cabinet 1. Each of the spray branch pipes 9 is provided with a second solenoid valve 92. The controller in the control box is electrically connected to all the first solenoid valves 63, the second solenoid valves 92 and the drive rod assembly.

[0023] After the door of the cabinet 1 is closed, the ventilation shutter structure will be automatically started to open, and the shutter blades will be pushed outward by the driving rod assembly, and the exhaust fan 2 will exhaust air outward. When the temperature somewhere in the cabinet 1 is too high, the infrared sensor 62 closest to that place will sense it and start the first solenoid valve 63 in the exhaust branch pipe 6 to discharge nitrogen outward. The nitrogen will replace the surrounding air with nitrogen at a higher temperature, reducing the combustion rate. At the same time, the exhaust fan is also pumping air outward to reduce the air content in the cabinet 1. At the same time, the second solenoid valve 92 in the spray branch pipe 9 in the corresponding horizontal plane is started, and the spray branch pipe 9 sprays the carbon dioxide foam in the fire extinguisher to the high temperature to extinguish the fire more quickly.

[0024] You can also set up an alarm system to extinguish the fire. The controller will send fire information through the network to alarm and notify timely maintenance.

[0025] The driving rod assembly includes a driving cylinder 33, a push rod 32 and multiple rotating rods 31. The cylinder shaft of the driving cylinder 33 is connected to a downward push rod 32, and a limiting sleeve block 321 is sleeved on the push rod 32. One end of the rotating rod 31 is rotatably connected to the push rod 32, and the other end of the rotating rod 31 is rotatably connected to the inner side wall of the bottom edge of the louver blade 3.

[0026] When the driving cylinder 33 pushes the push rod 32 downward, the multiple rotating rods 31 will push the bottom edge of the louver blades 3 outward to move outward, so that the louver blades 3 are unfolded outward. On the contrary, when closing, the driving cylinder 33 will pull the push rod 32 upward, and the multiple rotating rods 31 will pull the bottom edge of the louver blades 3 inward to achieve closing.

[0027] When the shutter blades 3 are opened outward, the angle between them and the side wall of the cabinet body 1 is not greater than 30°. It is not too large, so that you can breathe freely and have a certain rainproof effect.

[0028] The outlet end of the exhaust branch pipe 6 is provided with four outlet holes 61 arranged along the pipe wall, and an infrared sensor 62 is arranged at the center of the four outlet holes 61. The infrared sensor 62 is electrically connected to the controller in the control box. The ejected nitrogen diffuses outward through the four outlet holes 61, and the infrared sensor 62 is arranged in the middle for easy positioning.

[0029] The controller is provided with a temperature threshold. When the infrared sensor 62 detects that the temperature of a certain place in the cabinet 1 reaches the threshold, the nitrogen spray component and the fire extinguishing component will be started. The temperature threshold is set, and when the temperature reaches a certain temperature, the nitrogen spray is started before combustion, so as to prevent combustion from occurring more quickly.

[0030] The air outlet of the spray branch pipe 9 is a trumpet-shaped air outlet 91, and each of the spray branch pipes 9 corresponds to the multiple exhaust branch pipes 6 on the nitrogen main exhaust pipe 8 on multiple horizontal planes;

[0031] When the infrared sensor 62 on the exhaust branch pipe 6 senses that the temperature reaches a threshold value, the first solenoid valve 63 in the exhaust branch pipe 6 is activated. At the same time, the controller activates the second solenoid valve 92 in the spray branch pipe 9 in the same horizontal plane of the exhaust branch pipe 6 to open.

[0032] A spray branch pipe 9 (for spraying carbon dioxide from the inactivation tank) and an exhaust branch pipe 6 (for exhausting nitrogen to dilute the surrounding air and prevent the expansion of combustion) are arranged on the same plane, which can accurately locate the position and quickly extinguish the fire.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A switch cabinet with a fire extinguishing structure, characterized in that: The invention comprises a cabinet (1), an exhaust fan (2), a ventilation shutter structure, a nitrogen gas ejection assembly, a fire extinguishing assembly and a control box. The cabinet (1) is provided with an exhaust fan (2) on one side wall and a ventilation shutter structure on the other side wall. The ventilation shutter structure comprises a plurality of outwardly opening shutter blades (3) and a driving rod assembly for driving the shutter blades (3) to open outward. The nitrogen gas ejection assembly comprises a nitrogen tank (4), a connecting branch pipe (41), a nitrogen main exhaust pipe (5) and an exhaust branch pipe (6). The nitrogen tank (4) is arranged at a corner near the rear side wall at the bottom of the cabinet (1). The nitrogen main exhaust pipe (5) is fixed at the middle position of the rear side wall of the cabinet (1). The gas outlet of the nitrogen tank (4) is connected to one end of the connecting branch pipe (41) through a hose, and the other end of the connecting branch pipe (41) is connected to the nitrogen main exhaust pipe (5). The nitrogen main exhaust pipe (5) is provided with a plurality of exhaust branch pipes (6) at equal intervals. The air outlet of the pipe (6) faces the interior of the cabinet (1); each of the exhaust branch pipes (6) is provided with a first electromagnetic valve (63); the fire extinguishing assembly comprises a carbon dioxide tank (7), a second connecting branch pipe (71), a carbon dioxide main pipe (8) and a spray branch pipe (9); the carbon dioxide tank (7) is arranged at another corner of the bottom of the cabinet (1) near the rear side wall; the air outlet of the carbon dioxide tank (7) is connected to one end of the second connecting branch pipe (71) through a hose, and the other end of the second connecting branch pipe (71) is connected to the carbon dioxide main pipe (8); spray branch pipes (9) are arranged at equal intervals on the carbon dioxide main pipe (8) and the air outlets of the spray branch pipes (9) face the interior of the cabinet (1); each of the spray branch pipes (9) is provided with a second electromagnetic valve (92); and the controller in the control box is electrically connected to all the first electromagnetic valves (63), the second electromagnetic valves (92) and the driving rod assembly.

2. The switch cabinet with a fire extinguishing structure according to claim 1, characterized in that: The driving rod assembly comprises a driving cylinder (33), a push rod (32) and a plurality of rotating rods (31); a cylinder shaft of the driving cylinder (33) is connected to a downward push rod (32); a limiting sleeve block (321) is sleeved on the push rod (32); one end of the rotating rod (31) is rotatably connected to the push rod (32); and the other end of the rotating rod (31) is rotatably connected to the inner side wall of the bottom edge of the louver blade (3).

3. The switch cabinet with a fire extinguishing structure according to claim 2, characterized in that: When the shutter blades (3) are opened outwards, the angle between them and the side wall of the cabinet (1) is no greater than 30°.

4. The switch cabinet with a fire extinguishing structure according to claim 1, characterized in that: The outlet end of the exhaust branch pipe (6) is provided with four outlet holes (61) arranged along the pipe wall, and the center positions of the four outlet holes (61) are provided with infrared sensors (62), and the infrared sensors (62) are electrically connected to the controller in the control box.

5. The switch cabinet with a fire extinguishing structure according to claim 4, characterized in that: A temperature threshold is provided in the controller, and when the infrared sensor (62) detects that the temperature at a certain point in the cabinet (1) reaches the threshold, the nitrogen spraying component and the fire extinguishing component are activated.

6. The switch cabinet with a fire extinguishing structure according to claim 5, characterized in that: The air outlet of the spray branch pipe (9) is a trumpet-shaped air outlet (91), and each of the spray branch pipes (9) corresponds to a plurality of exhaust branch pipes (6) on the nitrogen main exhaust pipe (5) on a plurality of horizontal planes; When the infrared sensor (62) on the exhaust branch pipe (6) senses that the temperature has reached a threshold value, the first solenoid valve (63) in the exhaust branch pipe (6) is activated, and at the same time, the controller activates the second solenoid valve (92) in the spray branch pipe (9) in the same horizontal plane as the exhaust branch pipe (6) to open.

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