Automatic fire extinguishing mechanism for power distribution cabinet and use method thereof

Abstract

The application discloses an automatic fire extinguishing mechanism for a power distribution cabinet and a use method thereof, and relates to the technical field of power distribution cabinets. The automatic fire extinguishing mechanism for the power distribution cabinet comprises a cabinet body and a cabinet door installed on the power distribution cabinet body, the inside of the power distribution cabinet body is respectively provided with a carbon dioxide fire extinguishing part and a dry powder fire extinguishing part, and the top of the inner side wall of the power distribution cabinet body is fixedly connected with a sensor; and the top of the power distribution cabinet body is provided with a purification mechanism for purifying harmful gas. Through the arrangement of the power distribution cabinet body, the carbon dioxide fire extinguishing part and the dry powder fire extinguishing part, when the sensor detects a fire signal, the control part makes the dry powder fire extinguishing part act, the inside of the power distribution cabinet body is extinguished, finally, the carbon dioxide fire extinguishing part performs secondary fire extinguishing and blows up the dry powder at the same time, the purification mechanism can purify and filter the dry powder and toxic gas, and the effect that the carbon dioxide fire extinguishing part can extinguish the fire and the dry powder can be cleaned can be achieved.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically to an automatic fire extinguishing mechanism for power distribution cabinets and its usage method. Background Technology

[0002] Distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets, and are the final-level equipment in a power distribution system. Distribution cabinets are a general term for motor control centers. Distribution cabinets are used in situations where the load is relatively dispersed and there are fewer circuits; motor control centers are used in situations where the load is concentrated and there are more circuits. Therefore, high temperatures are easily generated inside distribution cabinets during operation. If heat dissipation is not timely, a fire can easily occur inside the cabinet. If the fire source is not extinguished in time, it can easily spread, causing significant property damage and major fire accidents.

[0003] In the existing technology, some power distribution cabinets that use dry powder for automatic fire extinguishing can effectively extinguish fires, but because the dry powder particles are small, they are inconvenient to clean after the fire is extinguished, and too much dry powder residue makes it difficult to repair internal components. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an automatic fire extinguishing mechanism for power distribution cabinets. This solves the problem that while some power distribution cabinets using dry powder for automatic fire extinguishing can effectively extinguish fires, the small size of the dry powder particles makes cleaning inconvenient after extinguishing the fire, resulting in excessive dry powder residue and making it difficult to repair internal components.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic fire extinguishing mechanism for a power distribution cabinet, comprising a distribution cabinet body and a cabinet door installed on the distribution cabinet body, wherein a carbon dioxide fire extinguishing component and a dry powder fire extinguishing component are respectively installed inside the distribution cabinet body, and a sensor is fixedly connected to the top of the inner side wall of the distribution cabinet body.

[0008] The top of the power distribution cabinet body is equipped with a purification mechanism for purifying harmful gases, and the top of the power distribution cabinet body is equipped with a control component for controlling the carbon dioxide fire extinguishing component, the dry powder fire extinguishing component, and the purification mechanism.

[0009] Furthermore, the carbon dioxide fire extinguishing component includes a carbon dioxide fire extinguisher, a first connecting pipe, a first solenoid valve, and an outlet pipe. The carbon dioxide fire extinguisher is installed at the bottom of the inner wall of the distribution cabinet body. The outlet pipe of the carbon dioxide fire extinguisher is connected to the first connecting pipe through a connecting ring. The end of the first connecting pipe away from the carbon dioxide fire extinguisher is fixedly connected to the first solenoid valve. The outlet pipe is fixedly connected to the first solenoid valve.

[0010] Furthermore, an air guide box is fixedly connected to the air outlet of the air outlet pipe, and an exhaust port is opened on the surface of the air guide box.

[0011] Furthermore, the dry powder fire extinguishing component includes a dry powder fire extinguisher, a second connecting pipe, a second solenoid valve, and a spray pipe. The dry powder fire extinguisher is installed at the bottom of the inner wall of the distribution cabinet body. The output pipe of the dry powder fire extinguisher is connected to the second connecting pipe through a connecting ring. The end of the second connecting pipe away from the dry powder fire extinguisher is fixedly connected to the second solenoid valve. The spray pipe is fixedly connected to the second solenoid valve.

[0012] Furthermore, a connecting pipe is fixedly connected to the surface of the spray pipe, and an auxiliary pipe is fixedly connected to one end of the connecting pipe. The spray pipe, the connecting pipe, and the auxiliary pipe are internally connected.

[0013] Furthermore, a baffle plate is fixedly connected to the inner side wall of the power distribution cabinet body, and the air outlet pipe and spray pipe both penetrate the baffle plate.

[0014] Furthermore, the bottom of the inner wall of the power distribution cabinet is connected to two fixing brackets by screws, and the inner walls of the two fixing brackets are respectively movably connected to the surfaces of the carbon dioxide fire extinguisher and the dry powder fire extinguisher.

[0015] Furthermore, the purification mechanism includes a purification box, a pre-filter, a carbon monoxide purification layer, and a fan. The purification box is fixedly connected to the top of the power distribution cabinet body. The pre-filter and the carbon monoxide purification layer are both movably snapped into the inside of the purification box. The fan is fixedly connected to the inside of the purification box. The purification box is connected to the inside of the power distribution cabinet body through a ventilation valve.

[0016] Furthermore, the control components include a control box and a controller, with the controller fixedly connected to the top of the power distribution cabinet body and the control box located inside the controller.

[0017] The present invention also provides a method for using an automatic fire extinguishing mechanism for a power distribution cabinet, comprising the following steps:

[0018] S1. The sensor receives the fire signal and transmits the signal to the control unit. The control unit then activates the dry powder fire extinguishing unit to extinguish the fire on the distribution cabinet body.

[0019] S2. The dry powder fire extinguishing unit stops working, and the control unit controls the carbon dioxide fire extinguishing unit to work, perform secondary fire extinguishing inside the distribution cabinet, and clean up the dry powder.

[0020] S3, the control unit controls the purification mechanism to extract and purify the dry powder blown up by carbon dioxide and the toxic gases produced by incomplete combustion from the inside of the distribution cabinet.

[0021] Beneficial effects

[0022] The present invention has the following beneficial effects:

[0023] (1) The power distribution cabinet uses an automatic fire extinguishing mechanism. By setting up the distribution cabinet body, carbon dioxide fire extinguishing component and dry powder fire extinguishing component, when the sensor detects a fire signal, the control component causes the dry powder fire extinguishing component to activate and extinguish the fire inside the distribution cabinet body. Finally, the carbon dioxide fire extinguishing component performs secondary fire extinguishing and blows up the dry powder at the same time. The purification mechanism can purify and filter the dry powder and toxic gases inside the distribution cabinet body, achieving the effect of extinguishing the fire through the carbon dioxide fire extinguishing component and cleaning up the dry powder at the same time.

[0024] (2) The power distribution cabinet uses an automatic fire extinguishing mechanism. By setting up a carbon dioxide fire extinguisher, a first connecting pipe, a first solenoid valve and an exhaust pipe, after the dry powder fire extinguishing is completed, carbon dioxide enters the interior of the air guide box through the exhaust pipe and is discharged through the exhaust port on it, which can clean the dry powder. Under the action of the fan, the dry powder, impurities and carbon monoxide inside the distribution cabinet are sucked into the purification box, which can be cleaned and purified.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the power distribution cabinet of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the spray pipe of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the purification box of the present invention.

[0030] In the diagram, 1. Distribution cabinet body; 2. Cabinet door; 3. Sensor; 4. Carbon dioxide fire extinguisher; 5. First connecting pipe; 6. First solenoid valve; 7. Gas outlet pipe; 8. Air guide box; 9. Dry powder fire extinguisher; 10. Second connecting pipe; 11. Second solenoid valve; 12. Spray pipe; 13. Connecting pipe; 14. Auxiliary pipe; 15. Baffle plate; 16. Fixing frame; 17. Purification box; 18. Primary filter; 19. Carbon monoxide purification layer; 20. Fan; 21. Ventilation valve; 22. Control box; 23. Controller. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0033] Please see Figures 1-4 The present invention provides a technical solution: an automatic fire extinguishing mechanism for a power distribution cabinet, including a distribution cabinet body 1 and a cabinet door 2 installed on the distribution cabinet body 1. The interior of the distribution cabinet body 1 is respectively provided with a carbon dioxide fire extinguishing component and a dry powder fire extinguishing component, and a sensor 3 is fixedly connected to the top of the inner side wall of the distribution cabinet body 1.

[0034] The top of the power distribution cabinet body 1 is equipped with a purification mechanism for purifying harmful gases, and the top of the power distribution cabinet body 1 is equipped with a control component for controlling the carbon dioxide fire extinguishing component, the dry powder fire extinguishing component, and the purification mechanism.

[0035] Specifically, the carbon dioxide fire extinguishing component includes a carbon dioxide fire extinguisher 4, a first connecting pipe 5, a first solenoid valve 6, and an outlet pipe 7. The carbon dioxide fire extinguisher 4 is installed at the bottom of the inner wall of the distribution cabinet body 1. The outlet pipe of the carbon dioxide fire extinguisher 4 is connected to the first connecting pipe 5 through a connecting ring. The end of the first connecting pipe 5 away from the carbon dioxide fire extinguisher 4 is fixedly connected to the first solenoid valve 6. The outlet pipe 7 is fixedly connected to the first solenoid valve 6.

[0036] An air guide box 8 is fixedly connected to the air outlet of the air outlet pipe 7, and an exhaust port is opened on the surface of the air guide box 8.

[0037] In this implementation plan, the carbon dioxide fire extinguishing component is used for secondary fire extinguishing or to prevent reignition, and it can also blow up the dry powder for easy cleaning.

[0038] Specifically, the dry powder fire extinguishing component includes a dry powder fire extinguisher 9, a second connecting pipe 10, a second solenoid valve 11, and a spray pipe 12. The dry powder fire extinguisher 9 is installed at the bottom of the inner wall of the distribution cabinet body 1. The output pipe of the dry powder fire extinguisher 9 is connected to the second connecting pipe 10 through a connecting ring. The end of the second connecting pipe 10 away from the dry powder fire extinguisher 9 is fixedly connected to the second solenoid valve 11. The spray pipe 12 is fixedly connected to the second solenoid valve 11.

[0039] A connecting pipe 13 is fixedly connected to the surface of the spray pipe 12, and an auxiliary pipe 14 is fixedly connected to one end of the connecting pipe 13. The spray pipe 12, the connecting pipe 13 and the auxiliary pipe 14 are internally connected.

[0040] In this embodiment, the dry powder fire extinguisher 9 sprays dry powder through the second connecting pipe 10 and the spray pipe 12, and the auxiliary pipe 14 can make the dry powder spray evenly and better extinguish the fire.

[0041] Specifically, a baffle plate 15 is fixedly connected to the inner side wall of the power distribution cabinet body 1, and the air outlet pipe 7 and the spray pipe 12 both pass through the baffle plate 15.

[0042] In this embodiment, the baffle 15 can prevent the fire from affecting the carbon dioxide fire extinguisher 4 and the dry powder fire extinguisher 9, and plays a role in isolating the temperature.

[0043] Specifically, the bottom of the inner wall of the distribution cabinet body 1 is connected to two fixing brackets 16 by screws, and the inner walls of the two fixing brackets 16 are movably connected to the surfaces of the carbon dioxide fire extinguisher 4 and the dry powder fire extinguisher 9, respectively.

[0044] In this embodiment, two fixing brackets 16 respectively limit the movement of the carbon dioxide fire extinguisher 4 and the dry powder fire extinguisher 9 to prevent shaking and ensure secure fixing.

[0045] Specifically, the purification mechanism includes a purification box 17, a pre-filter 18, a carbon monoxide purification layer 19, and a fan 20. The purification box 17 is fixedly connected to the top of the power distribution cabinet body 1. The pre-filter 18 and the carbon monoxide purification layer 19 are both movably snapped into the inside of the purification box 17. The fan 20 is fixedly connected to the inside of the purification box 17. The purification box 17 is connected to the inside of the power distribution cabinet body 1 through a ventilation valve 21.

[0046] In this embodiment, the pre-filter 18 can filter dry powder and impurities, and the carbon monoxide purification layer 19 can convert carbon monoxide into carbon dioxide, reducing pollution.

[0047] Specifically, the control components include a control box 22 and a controller 23. The controller 23 is fixedly connected to the top of the power distribution cabinet body 1, and the control box 22 is located inside the controller 23.

[0048] In this embodiment, the controller 23 is used to control the opening and closing of the first solenoid valve 6, the second solenoid valve 11 and the vent valve 21, so as to facilitate fire extinguishing and purification.

[0049] A method for using an automatic fire extinguishing mechanism for a power distribution cabinet includes the following steps:

[0050] S1. Sensor 3 receives the fire signal and transmits the signal to the control unit. The control unit then activates the dry powder fire extinguishing unit to extinguish the fire on the main body of the distribution cabinet 1.

[0051] S2. The dry powder fire extinguishing unit stops working, and the control unit controls the carbon dioxide fire extinguishing unit to work, so as to perform secondary fire extinguishing inside the power distribution cabinet body 1 and clean up the dry powder.

[0052] S3. The control unit controls the purification mechanism to extract and purify the dry powder blown up by carbon dioxide and the toxic gases produced by incomplete combustion from the inside of the distribution cabinet body 1.

[0053] In use, insert the carbon dioxide fire extinguisher 4 and the dry powder fire extinguisher 9 into the two mounting brackets 16 respectively. Both mounting brackets 16 are screwed to the bottom of the inner wall of the distribution cabinet body 1. Then, connect the carbon dioxide fire extinguisher 4 to one end of the first connecting pipe 5 via a connecting ring. The connecting ring has internal threads, and the surface of the first connecting pipe 5 also has internal threads. Insert the output pipe of the carbon dioxide fire extinguisher 4 into the first connecting pipe 5 and secure it with the connecting ring. Similarly, connect the dry powder fire extinguisher 9 to the second connecting pipe 10 via another connecting ring. Close the cabinet door 2, and the sensor 3 can then monitor the distribution. The temperature inside the electrical cabinet body 1 is detected by sensor 3, which can use a heat and smoke sensor to monitor the inside of the electrical cabinet body 1. When a fire signal is detected, the controller 23 is activated, causing the second solenoid valve 11 to open. The dry powder fire extinguisher 9 delivers dry powder to the inside of the spray pipe 12 through the second connecting pipe 10. The spray pipe 12 is connected to the auxiliary pipe 14 through the connecting pipe 13. The spray pipe 12, the connecting pipe 13, and the auxiliary pipe 14 are connected, so that the dry powder can be sprayed out through the spray pipe 12 and the auxiliary pipe 14, so that the dry powder can be sprayed evenly inside the electrical cabinet body 1 for indiscriminate fire extinguishing.

[0054] After the dry powder fire extinguishing process ends, regardless of whether there are still sparks inside the distribution cabinet 1, the controller 23 will activate the carbon dioxide fire extinguishing component. The first solenoid valve 6 will open, and carbon dioxide will enter the interior of the outlet pipe 7 through the first connecting pipe 5. Then, it will be sent into the interior of the air guide box 8 through its outlet. There are two air guide boxes 8, symmetrically arranged on both sides of the outlet pipe 7. Through the exhaust vents on the air guide boxes 8, carbon dioxide can be evenly distributed into the interior of the distribution cabinet 1, filling it with carbon dioxide for fire extinguishing or preventing reignition. Simultaneously, the airflow will blow up the dry powder, and the controller 23 will open the ventilation valve 21, allowing the air to escape. When fan 20 is started, it draws air out of the power distribution cabinet body 1. The dry powder enters the purification box 17 with the airflow. The pre-filter 18 filters the dry powder and the particles produced by combustion. Due to incomplete combustion, there will be toxic carbon monoxide gas inside the power distribution cabinet body 1. After being treated by the carbon monoxide purification layer 19, it is converted into carbon dioxide and finally discharged. Spherical granular catalyst is placed on the carbon monoxide purification layer 19. The spherical granular catalyst is Ce catalyst, but Zr can also be used instead. The catalyst catalyzes the degradation of carbon monoxide into carbon dioxide and discharges it, reducing environmental pollution.

[0055] The top cover of the purification box 17 is removable. The interior of the purification box 17 is equipped with a locking slot to secure the pre-filter 18 and the carbon monoxide purification layer 19. The baffle 15 inside the power distribution cabinet 1 can prevent sparks from affecting the carbon dioxide fire extinguisher 4 and the dry powder fire extinguisher 9 and has the function of heat insulation. The control box 22 can protect the controller 23.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic fire extinguishing mechanism for a power distribution cabinet, comprising a distribution cabinet body (1) and a cabinet door (2) installed on the distribution cabinet body (1), characterized in that: The power distribution cabinet body (1) is equipped with carbon dioxide fire extinguishing components and dry powder fire extinguishing components. A sensor (3) is fixedly connected to the top of the inner side wall of the power distribution cabinet body (1). The top of the power distribution cabinet body (1) is provided with a purification mechanism for purifying harmful gases, and the top of the power distribution cabinet body (1) is provided with a control component for controlling the carbon dioxide fire extinguishing component, the dry powder fire extinguishing component, and the purification mechanism. The carbon dioxide fire extinguishing component includes a carbon dioxide fire extinguisher (4), a first connecting pipe (5), a first solenoid valve (6), and an outlet pipe (7). The carbon dioxide fire extinguisher (4) is installed at the bottom of the inner side wall of the power distribution cabinet body (1). The outlet pipe of the carbon dioxide fire extinguisher (4) is connected to the first connecting pipe (5) through a connecting ring. The end of the first connecting pipe (5) away from the carbon dioxide fire extinguisher (4) is fixedly connected to the first solenoid valve (6). The outlet pipe (7) is fixedly connected to the first solenoid valve (6). An air guide box (8) is fixedly connected to the air outlet of the air outlet pipe (7), and an exhaust port is provided on the surface of the air guide box (8). The dry powder fire extinguishing component includes a dry powder fire extinguisher (9), a second connecting pipe (10), a second solenoid valve (11), and a spray pipe (12). The dry powder fire extinguisher (9) is installed at the bottom of the inner wall of the power distribution cabinet body (1). The output pipe of the dry powder fire extinguisher (9) is connected to the second connecting pipe (10) through a connecting ring. The end of the second connecting pipe (10) away from the dry powder fire extinguisher (9) is fixedly connected to the second solenoid valve (11). The spray pipe (12) is fixedly connected to the second solenoid valve (11). The method for using an automatic fire extinguishing mechanism for a power distribution cabinet includes the following steps: S1. Sensor (3) receives the fire signal and transmits the signal to the control unit. The control unit makes the dry powder fire extinguishing unit work to extinguish the fire on the main body (1) of the power distribution cabinet. S2. The dry powder fire extinguishing component stops working, and the control component controls the carbon dioxide fire extinguishing component to work, perform secondary fire extinguishing inside the power distribution cabinet body (1), and clean up the dry powder. S3. The control component controls the purification mechanism to extract and purify the dry powder blown up by carbon dioxide and the toxic gases produced by incomplete combustion from the inside of the power distribution cabinet body (1).

2. The automatic fire extinguishing mechanism for a power distribution cabinet according to claim 1, characterized in that: A connecting pipe (13) is fixedly connected to the surface of the spray pipe (12), and an auxiliary pipe (14) is fixedly connected to one end of the connecting pipe (13). The spray pipe (12), the connecting pipe (13) and the auxiliary pipe (14) are internally connected.

3. The automatic fire extinguishing mechanism for a power distribution cabinet according to claim 1, characterized in that: The inner wall of the power distribution cabinet body (1) is fixedly connected to a baffle plate (15), and the air outlet pipe (7) and the spray pipe (12) both pass through the baffle plate (15).

4. The automatic fire extinguishing mechanism for a power distribution cabinet according to claim 1, characterized in that: The bottom of the inner wall of the power distribution cabinet body (1) is connected to two fixing brackets (16) by screws. The inner walls of the two fixing brackets (16) are movably connected to the surfaces of the carbon dioxide fire extinguisher (4) and the dry powder fire extinguisher (9).

5. An automatic fire extinguishing mechanism for a power distribution cabinet according to claim 1, characterized in that: The purification mechanism includes a purification box (17), a primary filter (18), a carbon monoxide purification layer (19), and a fan (20). The purification box (17) is fixedly connected to the top of the power distribution cabinet body (1). The primary filter (18) and the carbon monoxide purification layer (19) are both movably snapped into the inside of the purification box (17). The fan (20) is fixedly connected to the inside of the purification box (17). The purification box (17) is connected to the inside of the power distribution cabinet body (1) through a ventilation valve (21).

6. An automatic fire extinguishing mechanism for a power distribution cabinet according to claim 1, characterized in that: The control components include a control box (22) and a controller (23). The controller (23) is fixedly connected to the top of the power distribution cabinet body (1), and the control box (22) is located inside the controller (23).

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