A power supply and distribution protection device

Abstract

The utility model relates to a power supply and distribution protection device, including a power distribution cabinet, wherein a partition is provided in the middle of the power distribution cabinet, and a main control room and a branch control room are separated by the partition inside the power distribution cabinet, wherein a main circuit breaker is provided in the main control room, and a plurality of branch circuit breakers are provided in the branch control room, and each of the branch circuit breakers is electrically connected to the main circuit breaker through a wire, wherein a plurality of wire openings for wires to pass through are provided on the partition, and a fireproof expansion strip is provided in a ring shape on the inner side of the wire opening, and a fire extinguishing protection mechanism is also provided in the power distribution cabinet. When a fire occurs, the utility model uses the fireproof expansion strip to quickly isolate the fire spreading path between the two control rooms, thereby reducing the degree of damage to the entire power distribution system caused by the fire, and improving the safety of the power facilities. In addition, the fire extinguishing protection mechanism can promptly perform fire extinguishing operations when a fire occurs inside the power distribution cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical protection, in particular to a power supply and distribution protection device. Background Art

[0002] With the rapid development of social economy and the continuous progress of science and technology, the importance of power supply system in modern society has become increasingly prominent. The power supply and distribution system not only serves industrial production and commercial operations, but is also an indispensable infrastructure for daily life. However, power distribution facilities face many safety hazards during operation, especially electrical fires, which have become one of the major factors threatening the safe and stable operation of power systems. Electrical fires are often caused by reasons such as line aging, short circuits, overloads, and electrical equipment failures. Once they occur, they will not only cause serious property losses, but may also endanger personnel safety.

[0003] Traditional power supply and distribution protection devices focus on the prevention and protection of electrical overload, short circuit and other faults, but are relatively weak in emergency response measures after a fire occurs, especially in key power equipment such as distribution cabinets. The internal structure of the distribution cabinet is complex and the electrical components are dense. Once a fire occurs, the fire can spread quickly. It is not only difficult to quickly locate the fire source, but also difficult to extinguish the fire, which often leads to serious consequences.

[0004] In response to the above technical problems, the present application proposes a power supply and distribution protection device, which can effectively prevent the spread of fire and can quickly extinguish the fire. Utility Model Content

[0005] The utility model provides a power supply and distribution protection device, which solves the above problems existing in the use process of the prior art.

[0006] The technical solution of the utility model is implemented as follows: a power supply and distribution protection device, including a distribution cabinet, a partition is provided in the middle of the distribution cabinet, and a main control room and a branch control room are separated by the partition inside the distribution cabinet. A main circuit breaker is arranged in the main control room, and a plurality of branch circuit breakers are arranged in the branch control room. Each of the branch circuit breakers is electrically connected to the main circuit breaker through a wire, and a plurality of wire openings for the wires to pass through are opened on the partition, and a fire-proof expansion strip is arranged in a ring shape on the inner side of the wire opening. A fire extinguishing protection mechanism is also provided in the distribution cabinet.

[0007] Preferably, the fire extinguishing protection mechanism includes a fire extinguishing pipe fixed on the rear side wall of the distribution cabinet, at least one fire extinguishing pipe is arranged in the main control room and the branch control room, the fire extinguishing pipe is arranged vertically from top to bottom, and a plurality of nozzles are evenly distributed on the fire extinguishing pipe from top to bottom, and a perfluorohexanone fire extinguishing tank connected to the fire extinguishing pipe is arranged on the upper side of the distribution cabinet.

[0008] Preferably, a main pipe is fixedly connected to the upper part of the rear side wall of the distribution cabinet, the upper end of each fire extinguishing pipe is connected to the main pipe, the perfluorohexanone fire extinguishing tank is provided with a delivery pipe connected to the main pipe, and the delivery pipe is provided with a solenoid valve.

[0009] Preferably, a plurality of smoke sensors and temperature sensors are provided in the main control room and the branch control room, and a controller is fixedly connected to an outer wall of one side of the power distribution cabinet, and a control button is provided on the controller.

[0010] Preferably, a cooling fan is provided on the top of the distribution cabinet, and at least one cooling fan is provided in the main control room and the branch control room. There is a flow gap between the partition and the rear side wall of the distribution cabinet, and the main pipe passes through the flow gap. A second fire-proof expansion strip is provided on the rear side wall of the distribution cabinet in the flow gap.

[0011] Preferably, the distribution cabinet is provided with a first cover plate on the fixed cover on the front side of the main control room, and the distribution cabinet is also provided with a second cover plate on the fixed cover on the front side of the branch control room, the first cover plate is provided with a first exposure opening for exposing the main circuit breaker, the second cover plate is provided with a second opening for exposing the branch circuit breaker, and the lower side of the second cover plate is provided with a plurality of air holes.

[0012] Preferably, the first cabinet door and the second cabinet door are hingedly connected on both sides of the distribution cabinet body, the first cabinet door corresponds to the first cover plate, the second cabinet door corresponds to the second cover plate, the second cabinet door is provided with a first ventilation grid corresponding to the air hole, and the distribution cabinet body is also provided with a second ventilation grid on the side wall close to the main control room.

[0013] In summary, the beneficial effects of the present invention are:

[0014] 1. The utility model sets a partition in the middle of the power distribution cabinet to divide the internal space into a main control room and a branch control room. When a fire occurs, the fire expansion strip is used to quickly isolate the fire spread path between the two control rooms, reducing the degree of damage to the entire power distribution system and improving the safety of power facilities. In addition, the fire extinguishing protection mechanism can perform fire extinguishing operations in time when a fire occurs inside the power distribution cabinet.

[0015] 2. When a fire occurs inside the distribution cabinet, the perfluorohexanone fire extinguishing agent in the perfluorohexanone fire extinguishing tank is transported to the fire extinguishing pipe and then sprayed out from the nozzle, which can quickly extinguish the initial fire without causing secondary damage to the electrical equipment, ensuring the rapid resumption of operation of the electrical equipment and reducing economic losses.

[0016] 3. The controller can monitor the smoke concentration and temperature changes in the main control room and branch control room in real time through smoke sensors and temperature sensors, so as to automatically control the solenoid valve to open in case of fire. In addition, in an emergency, the fire extinguishing process can be manually started through the control button, which improves the flexibility and response speed of fire response and enhances the convenience and safety of personnel operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a front view of the utility model without the first cover plate, the second cover plate, the first cabinet door and the second cabinet door;

[0020] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure after removing some wires;

[0021] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure when observed from another angle;

[0023] Figure 6 for Figure 4 Schematic diagram of the structure when observing from the rear side;

[0024] Figure 7 It is a structural schematic diagram of the fire extinguishing pipe installed on the rear side wall of the power distribution cabinet in the utility model.

[0025] In the figure: 1. distribution cabinet; 11. partition; 12. wire opening; 13. main control room; 14. branch control room; 15. overcurrent gap; 21. main circuit breaker; 22. branch circuit breaker; 23. wire; 3. fire expansion strip; 41. fire extinguishing pipe; 42. nozzle; 43. perfluorohexanone fire extinguishing tank; 44. main pipe; 45. delivery pipe; 46. solenoid valve; 51. smoke sensor; 52. temperature sensor; 53. controller; 54. control button; 6. cooling fan; 7. second fire expansion strip; 81. first cover plate; 811. first exposure opening; 82. second cover plate; 821. second opening; 822. air vent; 83. first cabinet door; 84. second cabinet door; 85. first air permeable grid; 86. second air permeable grid. DETAILED DESCRIPTION

[0026] The following will be combined with the attached embodiment of the utility model Figure 1-7 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example:

[0028] like Figures 1 to 7 As shown, the utility model discloses a power supply and distribution protection device, including a distribution cabinet 1, a partition 11 is provided in the middle of the distribution cabinet 1, and a main control room 13 and a branch control room 14 are separated by the partition 11 inside the distribution cabinet 1. A main circuit breaker 21 is provided in the main control room 13, and a plurality of branch circuit breakers 22 are provided in the branch control room 14. Each branch circuit breaker 22 is electrically connected to the main circuit breaker 21 through a wire 23. Each branch circuit breaker 22 can be responsible for controlling and protecting one or several relatively independent circuit branches, such as supplying power to different equipment, areas or loads, and the main circuit breaker 21 is responsible for receiving electric energy from an upper power source (such as a transformer or an external power grid) and distributing it to the following branch circuits. These are the conventional means of setting up the distribution cabinet, so they will not be described in detail. The utility model has a plurality of wire openings 12 for the wires 23 to pass through on the partition 11, and the inner sides of these wire openings 12 are provided with fireproof expansion strips 3 in a ring shape. The material of the fireproof expansion strips 3 is usually silicate or other chemical composite materials containing special flame retardants. These materials will rapidly undergo physical or chemical changes when encountering high temperatures of fire, and the volume will expand several times or even dozens of times, effectively sealing the openings to prevent the fire and smoke from spreading through these openings. In addition, a fire extinguishing protection mechanism is also provided in the distribution cabinet 1.

[0029] Specifically, as shown in the figure, the fire extinguishing protection mechanism includes a fire extinguishing pipe 41 fixed on the rear side wall of the distribution cabinet 1, and at least one fire extinguishing pipe 41 is arranged in the main control room 13 and the branch control room 14. The fire extinguishing pipe 41 is vertically arranged from top to bottom, and a plurality of nozzles 42 are evenly distributed on the fire extinguishing pipe 41 from top to bottom. A perfluorohexanone fire extinguishing tank 43 connected to the fire extinguishing pipe 41 is arranged on the upper side of the distribution cabinet 1. The perfluorohexanone fire extinguishing tank 43 contains perfluorohexanone fire extinguishing agent, which can quickly extinguish the fire source through physical cooling, oxygen isolation and chemical inhibition, and has no damage or corrosion to the protected electrical equipment and is environmentally friendly.

[0030] The specific structure of the connection between the perfluorohexanone fire extinguishing tank 43 and the fire extinguishing pipe 41 is as follows: a main pipe 44 is fixedly connected above the rear side wall of the distribution cabinet 1, and the upper ends of each fire extinguishing pipe 41 are connected to the main pipe 44. A delivery pipe 45 connected to the main pipe 44 is provided on the perfluorohexanone fire extinguishing tank 43. In the utility model, there are two delivery pipes 45, and a solenoid valve 46 is provided on the delivery pipe 45.

[0031] In order to monitor the situation in the main control room 13 and the branch control room 14 in real time. A number of smoke sensors 51 and temperature sensors 52 are provided in the main control room 13 and the branch control room 14, and a controller 53 is fixedly connected to the outer wall of one side of the power distribution cabinet 1, and a control button 54 is provided on the controller 53. The controller 53 is electrically connected with the smoke sensor 51, the temperature sensor 52 and the solenoid valve 46. Since the functions to be realized by the controller 53, the smoke sensor 51, the temperature sensor 52 and the solenoid valve 46 in the utility model have been supported by a large number of mature technologies, the essence of the utility model is to optimize the combination of existing hardware and its connection method for specific application scenarios, so as to adapt to the monitoring of the situation in the main control room 13 and the branch control room 14 and the control of the perfluorohexanone fire extinguisher 43, and does not involve the improvement of the internal software of the hardware.

[0032] Working principle of the utility model: Under normal operating conditions, the main control room 13 and the branch control room 14 of the power supply and distribution protection device work independently, and the branch circuit breaker 22 is connected to the main circuit breaker 21 through the wire 23 to ensure stable power transmission. The smoke sensor 51 and the temperature sensor 52 inside the power distribution cabinet continuously monitor the environmental status and transmit the data to the controller 53 for analysis.

[0033] Once abnormally high temperature or excessive smoke concentration is detected, the controller 53 immediately determines it as a fire risk, and then starts the solenoid valve 46 to open the delivery pipe 45 between the perfluorohexanone fire extinguishing tank 43 and the main pipe 44. At this time, the perfluorohexanone fire extinguishing agent stored in the perfluorohexanone fire extinguishing tank 43 is distributed to each fire extinguishing pipe 41 through the main pipe 44 under pressure, and then sprayed from the nozzles 42 evenly distributed on the fire extinguishing pipe 41, thereby quickly reducing the temperature of the fire scene, interrupting the combustion chain reaction, and achieving rapid fire extinguishing. In addition, the utility model can also manually start the fire extinguishing process through the control button 54 in an emergency, which improves the flexibility and response speed of responding to fires and enhances the convenience and safety of personnel operation.

[0034] At the same time, the fireproof expansion strip 3 located inside the wire opening 12 of the partition 11 expands rapidly after sensing the high temperature, closes the opening, and effectively prevents the fire from spreading to another control room through the gap between the wires 23, thereby controlling the fire in a local area and buying valuable time for subsequent firefighting and rescue. The entire system significantly improves the fire defense capability of the power distribution facilities by combining intelligent monitoring with automated fire extinguishing.

[0035] In order to effectively dissipate heat of the utility model during daily use, a cooling fan 6 is provided on the top of the distribution cabinet 1. At least one cooling fan 6 is provided in the main control room 13 and the branch control room 14. In addition, a flow gap 15 is provided between the partition 11 and the rear side wall of the distribution cabinet 1. The flow gap 15 allows air in the main control room 13 and the branch control room 14 to circulate, thereby facilitating heat dissipation. The main pipe 44 passes through the flow gap 15. In order to prevent the flame from spreading from the flow gap 15 in case of fire, a second fireproof expansion strip 73 is also provided in the flow gap 15 on the rear side wall of the distribution cabinet 1.

[0036] In the present invention, the power distribution cabinet 1 is provided with a first cover plate 81 on the front fixed cover of the main control room 13, and the power distribution cabinet 1 is also provided with a second cover plate 82 on the front fixed cover of the branch control room 14. The first cover plate 81 is provided with a first exposure opening 811 for exposing the main circuit breaker 21, and the second cover plate 82 is provided with a second opening 821 for exposing the branch circuit breaker 22. A plurality of air holes 822 are provided on the lower side of the second cover plate 82. In addition, the first cabinet door 83 and the second cabinet door 84 are respectively hingedly connected on both sides of the power distribution cabinet 1. The first cabinet door 83 and the second cabinet door 84 are respectively hingedly connected. A cover plate 81 corresponds to the first cover plate 81, a second cabinet door 84 corresponds to the second cover plate 82, the second cabinet door 84 is provided with a first ventilation grid 85 corresponding to the ventilation hole 822, and the distribution cabinet body 1 is also provided with a second ventilation grid 86 on the side wall close to the main control room 13. The setting of the first cover plate 81 and the second cover plate 82 combined with the first cabinet door 83 and the second cabinet door 84 can well protect the interior of the distribution cabinet body 1, and the setting of the ventilation hole 822, the first ventilation grid 85 and the second ventilation grid 86 can facilitate the heat dissipation inside the utility model.

[0037] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power supply and distribution protection device, comprising a power distribution cabinet, wherein a partition is provided in the middle of the power distribution cabinet, wherein a main control room and a branch control room are separated by the partition inside the power distribution cabinet, wherein a main circuit breaker is provided in the main control room, and a plurality of branch circuit breakers are provided in the branch control room, wherein each branch circuit breaker is electrically connected to the main circuit breaker through a wire, wherein: The partition is provided with a plurality of wire openings for the wires to pass through, and the inner side of the wire openings is provided with fire-proof expansion strips in a ring shape, and the power distribution cabinet is also provided with a fire extinguishing protection mechanism.

2. A power supply and distribution protection device according to claim 1, characterized in that: The fire extinguishing protection mechanism includes a fire extinguishing pipe fixed on the rear side wall of the distribution cabinet. At least one fire extinguishing pipe is arranged in the main control room and the branch control room. The fire extinguishing pipe is arranged vertically from top to bottom. A plurality of nozzles are evenly distributed on the fire extinguishing pipe from top to bottom. A perfluorohexanone fire extinguishing tank connected to the fire extinguishing pipe is arranged on the upper side of the distribution cabinet.

3. A power supply and distribution protection device according to claim 2, characterized in that: A main pipe is fixedly connected above the rear side wall of the distribution cabinet, and the upper ends of the fire extinguishing pipes are connected to the main pipe. The perfluorohexanone fire extinguishing tank is provided with a delivery pipe connected to the main pipe, and a solenoid valve is provided on the delivery pipe.

4. A power supply and distribution protection device according to claim 3, characterized in that: The main control room and the branch control room are both provided with a plurality of smoke sensors and temperature sensors. A controller is fixedly connected to an outer wall of one side of the power distribution cabinet, and a control button is provided on the controller.

5. A power supply and distribution protection device according to claim 3, characterized in that: A cooling fan is provided on the top of the distribution cabinet, and at least one cooling fan is provided in the main control room and the branch control room. A flow gap is provided between the partition and the rear side wall of the distribution cabinet, and the main pipe passes through the flow gap. A second fireproof expansion strip is provided on the rear side wall of the distribution cabinet in the flow gap.

6. A power supply and distribution protection device according to claim 5, characterized in that: The distribution cabinet body is provided with a first cover plate on the fixed cover on the front side of the main control room, and the distribution cabinet body is also provided with a second cover plate on the fixed cover on the front side of the branch control room. The first cover plate is provided with a first exposure opening for exposing the main circuit breaker, the second cover plate is provided with a second opening for exposing the branch circuit breaker, and the lower side of the second cover plate is provided with a plurality of ventilation holes.

7. A power supply and distribution protection device according to claim 6, characterized in that: The first cabinet door and the second cabinet door are hingedly connected on both sides of the distribution cabinet body, the first cabinet door corresponds to the first cover plate, the second cabinet door corresponds to the second cover plate, the second cabinet door is provided with a first ventilation grid corresponding to the air hole, and the distribution cabinet body is also provided with a second ventilation grid on the side wall close to the main control room.

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