An integrated distribution box with arcing pressure relief channel

Abstract

The application relates to the technical field of distribution boxes, in particular to a comprehensive distribution box with an arc burning pressure relief channel, which comprises a box body, a door plate rotatably installed on the box body, an installation plate arranged in the box body, a fuse knife switch fixedly installed on the installation plate, a protective sleeve arranged on the installation plate, the protective sleeve being horizontally fixed on the installation plate, the fuse knife switch being installed in the protective sleeve, a wiring port being arranged on the protective sleeve and used for wiring of the fuse knife switch, a pressure relief channel being arranged on the door plate, a ventilation port and an exhaust port being arranged at the bottom and the top of the pressure relief channel respectively, a pressure relief port being arranged at the top of the box body and matched with the exhaust port, a connecting port being arranged on one side of the pressure relief channel and facing the protective sleeve, and a detection plate being slidably arranged in the protective sleeve. The protective sleeve and the L-shaped detection plate are arranged, automatic switching of two working conditions of heat dissipation and pressure relief is realized, and the operation safety of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, specifically to a comprehensive distribution box with an arc pressure relief channel. Background Technology

[0002] As the core equipment for power distribution and control in a power system, the integrated distribution box is an important component of realizing a smart grid, and its safety and reliability are directly related to the stable operation of the power system.

[0003] During the operation of a distribution box, the internal electrical equipment, especially fuses and knife switches, can experience a rapid increase in gas pressure within the box due to arcing caused by faults. If the high-temperature, high-pressure gas cannot be released in time, it can lead to the box rupture or the door panel flying off, seriously threatening the safety of equipment and personnel. Therefore, how to achieve rapid, directional, and safe pressure relief in the event of an arcing fault has become an important issue in the structural design of distribution boxes.

[0004] To address this, a comprehensive distribution box with an arc pressure relief channel is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated distribution box with an arc pressure relief channel to solve the problem mentioned in the background art that the distribution box cannot effectively relieve arc pressure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A comprehensive distribution box with an arc pressure relief channel includes a box body, a door panel rotatably mounted on the box body, an installation plate inside the box body for fixing electrical components, a fuse switch fixedly mounted on the installation plate, and a protective sleeve fixedly mounted on the installation plate. The protective sleeve is horizontally fixed to the installation plate on the side facing the door panel, and the fuse switch is installed inside the protective sleeve. The protective sleeve has a wiring port for wiring the fuse switch. A pressure relief channel is provided on the side of the door panel facing the protective sleeve, and the pressure relief channel is vertically fixed to the door panel. A ventilation opening is provided at the bottom of the pressure relief channel, and a [missing information - likely a vent or opening] is provided at the top of the pressure relief channel. The enclosure has a pressure relief port on its top. When the door is closed, the exhaust port is aligned with the pressure relief port. The pressure relief channel has a connection port on the side facing the protective sleeve. When the door is closed, the connection port is aligned with the end of the protective sleeve, connecting the protective sleeve to the pressure relief channel. A detection plate is slidably installed inside the protective sleeve. The detection plate includes a vertical part and a horizontal part. The detection plate is generally L-shaped. The horizontal part faces the direction of the fuse switch. The vertical part separates the protective sleeve from the pressure relief channel. When the vertical part slides to fit against the side wall of the pressure relief channel, the protective sleeve is connected to the pressure relief channel, and the horizontal part separates the ventilation port from the exhaust port.

[0007] By setting up a protective sleeve, a detection plate, and a pressure relief channel, when the fuse switch is working normally, the detection plate is in the initial position. At this time, the protective sleeve and the pressure relief channel are in a state of isolation. The heat inside the box can enter the pressure relief channel through the ventilation port at the bottom of the pressure relief channel, and finally be discharged from the box through the exhaust port at the top, thus realizing the daily heat dissipation of the distribution box.

[0008] When the fuse switch melts or arcs due to a malfunction, high-temperature and high-pressure gas is rapidly generated inside the protective sleeve. The gas pressure acts on the horizontal part of the detection plate, pushing the entire detection plate to slide horizontally along the protective sleeve toward the pressure relief channel. The detection plate extends into the pressure relief channel through the connection port. When the vertical part of the detection plate enters the pressure relief channel, the inside of the protective sleeve is connected to the pressure relief channel. Guided by the "L"-shaped detection plate, the high-temperature and high-pressure gas is guided toward the exhaust port, preventing it from entering the chamber through the pressure relief channel. When the vertical part of the detection plate slides to fit against the side wall of the pressure relief channel, the horizontal part of the detection plate just blocks the ventilation opening of the pressure relief channel, further preventing the high-temperature gas from entering the chamber. It can only flow upward along the pressure relief channel and finally exit from the pressure relief port at the top of the chamber.

[0009] By incorporating a protective sleeve and an "L"-shaped detection plate, the high-temperature, high-pressure gas generated by the arcing is quickly guided and depressurized, preventing the high-temperature arcing gas from spreading into the enclosure and damaging other electrical components, thus effectively improving the operational safety of the integrated distribution box. Simultaneously, the sliding friction of the detection plate also helps absorb the impact force of the high-temperature, high-pressure gas, preventing impact damage to the equipment.

[0010] Preferably, an abutment sleeve is slidably installed inside the protective sleeve, and a rubber ring is provided at one end of the abutment sleeve facing the door panel. A push spring is provided inside the protective sleeve, and the push spring is used to keep the protective sleeve pushed towards the door panel. The detection plate is slidably disposed inside the abutment sleeve.

[0011] By setting up an abutment sleeve and a rubber ring, the abutment sleeve will always be pressed against the connection port under the elastic force of the push spring, ensuring that the protective sleeve can always be connected to the pressure relief channel through the abutment sleeve.

[0012] After the rubber ring undergoes elastic deformation under pressure, it can fill the assembly gap between the abutment sleeve and the connection port, ensuring the sealing of the connection between the protective sleeve and the pressure relief channel. This effectively prevents high-temperature gas from leaking into the housing from the connection gap after an arc occurs, further improving the safety of the equipment.

[0013] Preferably, the protective sleeve has multiple heat dissipation vents on its two side walls near the mounting plate. Multiple shields are rotatably mounted inside the protective sleeve corresponding to these vents. A connecting rod is hinged to the free end of each shield on the same side. The detection plate is made of insulating material. A metal sheet, made of magnetic metal, is fixedly mounted at the bottom of the horizontal portion of the detection plate. A permanent magnet is provided on the bottom surface inside the abutting sleeve. A limit block is provided at the end of the abutting sleeve facing the mounting plate. When the vertical portion abuts against the limit block, the metal sheet aligns with the permanent magnet. Each connecting rod has an "L"-shaped abutting block at its bottom. When the vertical portion abuts against the limit block, the horizontal portion pushes the abutting block towards the mounting plate, causing the shield to rotate and open the heat dissipation vents. After rotation, the shield forms an inclined angle with the side wall of the protective sleeve.

[0014] By setting up heat dissipation vents and baffles, when the fuse switch is working normally, the detection plate is kept in its initial position by the cooperation of the permanent magnet and the metal sheet. The horizontal part always pushes against the abutment block at the bottom of the connecting rod, so that the connecting rod drives the baffle to keep rotating and open, keeping the heat dissipation vents unobstructed. The normal heat generated by the fuse switch can be discharged into the cabinet in time through the heat dissipation vents, and finally enter the pressure relief channel through the ventilation vents, and then be discharged through the pressure relief channel, ensuring the normal heat dissipation of the fuse switch and avoiding overheating of the equipment and affecting its service life.

[0015] When an arcing fault occurs, the detection plate moves towards the pressure relief channel under the push of high-pressure gas. The horizontal part moves accordingly and no longer provides support for the abutment block. At this time, the high-temperature and high-pressure gas acts on the shield, which will automatically push the shield to rotate and quickly close the heat dissipation port. This allows the high-temperature and high-pressure gas to flow only along the protective sleeve to the pressure relief channel, completely blocking the channel for high-temperature gas to enter the box. This ensures that the heat dissipation during the normal operation of the fuse switch is met, while also ensuring that the high-temperature and high-pressure gas will not damage other electrical components inside the box when an arcing fault occurs.

[0016] Preferably, an exhaust fan is provided inside the pressure relief channel, and the exhaust fan is used to generate vertically upward airflow.

[0017] By installing exhaust fans, the airflow rate in the pressure relief channel can be accelerated during the daily operation of the distribution box. The heat inside the box can be discharged to the outside of the box more quickly through the ventilation openings, pressure relief channel, exhaust port and pressure relief port, which effectively improves the overall daily heat dissipation effect of the distribution box and reduces the wear and tear of electrical components due to long-term high-temperature operation.

[0018] When an arcing failure occurs, the upward airflow generated by the exhaust fan can further accelerate the flow rate of high-temperature and high-pressure gas in the pressure relief channel, helping the high-temperature gas to be discharged from the chamber more quickly, improving the efficiency of pressure relief, and further reducing the safety risks caused by the sudden increase in pressure inside the chamber.

[0019] Preferably, the tilt angle is less than 90°. By setting the tilt angle, when the high-pressure gas generated by the arc impacts the shield, the thrust can be converted into the shield's rotational torque along the tilted shield surface. This allows for rapid shield rotation and closure without requiring excessive air pressure, improving the shield's closing response speed. It also prevents excessive high-temperature gas from escaping from the heat dissipation vents to the outside of the protective sleeve, thus avoiding impact on other electrical components.

[0020] Preferably, the bottom of the horizontal section is further provided with a plurality of metal strips, which are parallel to the metal sheet and are spaced parallel to each other.

[0021] By setting multiple metal strips at intervals, when the detection plate moves toward the pressure relief channel during arcing, the multiple metal strips will pass over the permanent magnet in sequence. The magnetic force of the permanent magnet on each metal strip will generate segmented resistance, gradually offsetting the high-pressure impact force on the detection plate, avoiding structural damage caused by the detection plate hitting the side wall of the pressure relief channel at high speed, and at the same time buffering the impact energy of high-pressure gas, reducing the impact force on the entire box.

[0022] Preferably, the protective sleeve, the shield, and the connecting rod are all made of insulating material. Multiple arc-extinguishing plates are vertically arranged on the detection plate, and the multiple arc-extinguishing plates are arranged in parallel and spaced apart. The bottom edge and side edge of the arc-extinguishing plate are respectively bonded to the horizontal part and the vertical part.

[0023] By incorporating arc-extinguishing plates, when an arc is generated, it is guided and divided into the gaps between multiple plates, dispersing the high voltage into multiple segments of lower voltage, achieving rapid arc extinguishing and reducing the hazards caused by the arc. Simultaneously, when the detection plate is pushed into the pressure relief channel, the upward airflow generated by the exhaust fan quickly carries away the heat from the arc-extinguishing plates, accelerating the cooling process. The arc-extinguishing plates themselves also strengthen the connection structure between the vertical and horizontal sections of the detection plate, improving its overall structural strength and preventing breakage caused by high-pressure gas impact. The vertically arranged multiple arc-extinguishing plates also do not obstruct the upward flow of high-temperature, high-pressure gas within the pressure relief channel.

[0024] Preferably, a trigger button is provided inside the pressure relief channel, the trigger button is aligned with the connection port, and a buzzer is fixedly installed on the door panel, with the trigger button electrically connected to the buzzer.

[0025] By setting a trigger button and a buzzer, when an arcing fault occurs and the detection board is pushed into the pressure relief channel by high-pressure gas, the trigger button will be triggered, causing the buzzer to be powered on and sound an alarm, reminding staff to repair the fault in time and avoid the fault from causing a larger safety accident due to failure to deal with it in time.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The integrated distribution box with an arc pressure relief channel designed in this invention, by setting a protective sleeve and an L-shaped detection plate, can achieve normal heat dissipation by isolating the protective sleeve and the pressure relief channel and keeping the ventilation port unobstructed during normal operation. When an arc occurs, the high-pressure gas pushes the detection plate to slide, connecting the protective sleeve and the pressure relief channel and cutting off the ventilation port at the same time, so as to guide the high-temperature gas to the pressure relief port for discharge. This realizes the automatic switching between the two working conditions of heat dissipation and pressure relief, and improves the operational safety of the equipment.

[0027] 2. The integrated distribution box with an arc pressure relief channel designed in this invention achieves a dynamic sealing connection between the protective sleeve and the pressure relief channel by setting an abutment sleeve and a rubber ring, preventing high-temperature gas from leaking into the box body; at the same time, through the cooperation of metal strips and permanent magnets, segmented magnetic damping is generated during the sliding of the detection plate, buffering the impact energy of high-pressure gas, avoiding structural damage caused by high-speed impact of the detection plate, and improving the impact resistance and sealing reliability of the equipment under arc fault.

[0028] 3. The integrated distribution box with arc pressure relief channel designed in this invention divides the electric arc into multiple low-voltage arc segments by setting an arc extinguishing plate to achieve rapid arc extinguishing, and works in conjunction with the upward airflow generated by the exhaust fan to accelerate the discharge of heat after arc extinguishing; at the same time, a linkage mechanism between the shield and the linkage rod is set up so that the shield automatically closes the heat dissipation port when arcing occurs, blocking the channel for high-temperature gas to escape into the box, forming a complete protection from arc extinguishing, isolation to directional pressure relief, and comprehensively ensuring the operational safety of the distribution box and its internal electrical components. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 For the present invention Figure 2 Sectional view at point AA; Figure 4 For the present invention Figure 2 Sectional view at point BB; Figure 5 For the present invention Figure 3 Enlarged view of point C in the middle; Figure 6 For the present invention Figure 3 Enlarged view at point D; Figure 7 For the present invention Figure 5 Enlarged view at point E in the middle; Figure 8 For the present invention Figure 4 Enlarged view at point F; Figure 9This is an exploded view of the protective sleeve, the contact sleeve, and the detection plate in this invention; Figure 10 This is a three-dimensional schematic diagram of the fit between the abutment block and the horizontal part in this invention; Figure 11 For the present invention Figure 10 A magnified view of point G in the middle.

[0030] In the diagram: 1. Housing; 2. Door panel; 3. Mounting plate; 4. Fusible switch; 5. Protective sleeve; 6. Wiring port; 7. Pressure relief channel; 8. Ventilation port; 9. Exhaust port; 10. Pressure relief port; 11. Connection port; 12. Detection plate; 121. Vertical part; 122. Horizontal part; 13. Abutting sleeve; 14. Rubber ring; 15. Push spring; 16. Heat dissipation port; 17. Sheath; 18. Connecting rod; 19. Metal sheet; 20. Permanent magnet; 21. Limiting block; 22. Abutting block; 23. Exhaust fan; 24. Metal strip; 25. Arc extinguishing plate; 26. Trigger button; 27. Buzzer; α, Tilt angle. Detailed Implementation

[0031] Please see Figures 1 to 11 This invention provides a comprehensive distribution box with an arc pressure relief channel, the technical solution of which is as follows: A comprehensive distribution box with an arc pressure relief channel, reference Figures 1 to 5 It includes a housing 1, a door panel 2 rotatably mounted on the housing 1, an installation plate 3 inside the housing 1, the installation plate 3 is used to fix electrical components, and a fuse switch 4 is fixedly mounted on the installation plate 3.

[0032] refer to Figures 1 to 5 A protective sleeve 5 is also fixedly installed on the mounting plate 3. The protective sleeve 5 is horizontally fixed on the mounting plate 3 facing the door panel 2, and the fuse switch 4 is installed inside the protective sleeve 5. The protective sleeve 5 has a wiring port 6 for wiring the fuse switch 4.

[0033] refer to Figure 1 as well as Figures 3 to 5 A pressure relief channel 7 is provided on the side of the door panel 2 facing the protective sleeve 5, and the pressure relief channel 7 is vertically fixed to the door panel 2. A vent 8 is provided at the bottom of the pressure relief channel 7, and an exhaust port 9 is provided at the top of the pressure relief channel 7. A pressure relief port 10 is provided at the top of the enclosure 1. When the door panel 2 is closed, the exhaust port 9 is aligned with the pressure relief port 10. In addition, an exhaust fan 23 is provided on the upper side inside the pressure relief channel 7, which continuously generates vertical upward airflow to facilitate heat dissipation inside the enclosure 1.

[0034] refer to Figures 3 to 11Inside the protective sleeve 5, a sliding abutment sleeve 13 is installed. The abutment sleeve 13 is made of non-magnetic metal. A rubber ring 14 is provided at the end of the abutment sleeve 13 facing the door panel 2. A push spring 15 is provided inside the protective sleeve 5 to keep the protective sleeve 5 pushing towards the door panel 2. Inside the abutment sleeve 13, a detection plate 12 is also horizontally slidably installed. The detection plate 12 includes a vertical part 121 and a horizontal part 122, which are fixedly connected to the vertical part 121, making the detection plate 12 generally "L" shaped. The detection plate 12 is made of insulating material, such as PE, PVC, or other plastic or ceramic materials. In this embodiment, the detection plate 12 is made of PVC plastic to facilitate self-lubrication during sliding and prevent jamming. In addition, the horizontal part 122 faces the direction of the fuse switch 4, and the vertical part 121 is used to isolate the protective sleeve 5 from the pressure relief channel 7.

[0035] Further reference Figures 8 to 10 The protective sleeve 5, the shield 17 and the connecting rod 18 are all made of insulating material. Multiple arc-extinguishing plates 25 are vertically arranged on the detection plate 12. The multiple arc-extinguishing plates 25 are arranged in parallel and spaced apart. The bottom edge and side edge of the arc-extinguishing plate 25 are glued to the horizontal part 122 and the vertical part 121, respectively.

[0036] refer to Figures 3 to 5 When the vertical part 121 slides to fit against the side wall of the pressure relief channel 7, the protective sleeve 5 connects with the pressure relief channel 7, and the horizontal part 122 separates the vent 8 from the exhaust port 9. The pressure relief channel 7 also has a connection port 11 on the side facing the protective sleeve 5. When the door panel 2 is closed, the connection port 11 is aligned with the end of the protective sleeve 5, and the abutting sleeve 13 on the protective sleeve 5 abuts against the connection port 11 of the pressure relief channel 7, connecting the protective sleeve 5 with the pressure relief channel 7.

[0037] refer to Figures 8 to 11 Multiple heat dissipation vents 16 are provided on the two side walls of the protective sleeve 5 near the mounting plate 3. Multiple shields 17 are rotatably installed inside the protective sleeve 5 corresponding to the multiple heat dissipation vents 16. A connecting rod 18 is hinged to the free end of the shields 17 on the same side.

[0038] A metal sheet 19 is fixedly installed at the bottom of the horizontal part 122 of the detection plate 12. The metal sheet 19 is made of magnetic material, and a permanent magnet 20 that cooperates with the metal sheet 19 is provided on the bottom surface inside the abutting sleeve 13. A limit block 21 is provided at one end of the abutting sleeve 13 facing the mounting plate 3. When the vertical part 121 abuts against the limit block 21, the metal sheet 19 is aligned with the permanent magnet 20, and the permanent magnet 20 attracts the metal sheet 19.

[0039] Furthermore, refer to Figure 5 and Figure 7The bottom of the horizontal part 122 is also provided with a plurality of metal strips 24, which are parallel to the metal sheet 19 and are evenly spaced toward the mounting plate 3.

[0040] In addition, refer to Figures 7 to 11 Each connecting rod 18 has an "L"-shaped abutment block 22 at its bottom. When the vertical part 121 abuts against the limiting block 21, the horizontal part 122 pushes the abutment block 22 toward the mounting plate 3, causing the cover plate 17 to rotate and open the heat dissipation vent 16. After the cover plate 17 rotates, it forms an inclined angle α with the side wall of the protective sleeve 5. The inclined angle α is less than 90°, and in this embodiment, the inclined angle α is selected as 60°.

[0041] refer to Figure 1 and Figure 8 The pressure relief channel 7 is also equipped with a trigger button 26, which is aligned with the connection port 11. A buzzer 27 is fixedly installed on the door panel 2, and the trigger button 26 is electrically connected to the buzzer 27.

[0042] Working principle: During normal operation, refer to Figures 7 to 11 The vertical part 121 of the detection plate 12 is manually pushed towards the mounting plate 3, so that the vertical part 121 abuts against the limiting block 21. At this time, the permanent magnet 20 generates an attractive force on the metal sheet 19, keeping the detection plate 12 in its initial position. Meanwhile, the horizontal part 122 is always pushing against the abutment block 22 at the bottom of each connecting rod 18, so that the connecting rod 18 drives the corresponding cover plate 17 to remain in the open state, and the heat dissipation vent 16 remains unobstructed.

[0043] At this time, refer to Figures 3 to 11 The heat generated during the operation of the fuse switch 4 can be directly discharged into the cabinet 1 through the heat dissipation port 16. Then, the heat entering the cabinet 1 enters the pressure relief channel 7 through the ventilation port 8. Driven by the upward airflow generated by the exhaust fan 23 inside the pressure relief channel 7, it is quickly discharged to the outside of the cabinet 1 through the exhaust port 9 and the pressure relief port 10, ensuring the normal heat dissipation of the fuse switch 4 and the entire distribution box, avoiding overheating of the equipment and affecting its service life, and improving the overall daily heat dissipation efficiency of the distribution box.

[0044] When an arcing fault occurs inside the fuse switch 4, refer to Figure 3 , Figure 8The air pressure inside the protective sleeve 5 will rise rapidly. The high temperature and high pressure gas pushes the detection plate 12 to overcome the magnetic attraction of the permanent magnet 20 and slide along the abutment sleeve 13 toward the pressure relief channel 7. The horizontal part 122 of the detection plate 12 moves accordingly and no longer provides support for the abutment block 22. At this time, the high pressure gas generated by the arc acts on the baffle 17 and converts the thrust into rotational torque along the inclined surface of the baffle 17, pushing the baffle 17 to rotate rapidly and automatically closing the heat dissipation port 16. This allows the high temperature and high pressure gas to flow only along the protective sleeve 5 to the pressure relief channel 7, blocking the passage for the high temperature gas to enter the interior of the box 1.

[0045] During the sliding process of the detection plate 12, reference Figure 7 Multiple metal strips 24, spaced apart, pass over the permanent magnet 20 in sequence. The magnetic force of the permanent magnet 20 on each metal strip 24 generates segmented resistance, gradually offsetting the high-pressure impact force on the detection plate 12, buffering the impact energy of the high-pressure gas, preventing the detection plate 12 from impacting the side wall of the pressure relief channel 7 at high speed and causing structural damage, and also reducing the impact force on the entire box 1.

[0046] After the detection plate 12 slides to the point where the vertical part 121 is in contact with the side wall of the pressure relief channel 7, refer to Figure 3 , Figure 5 as well as Figure 8 and Figure 9 The protective sleeve 5 is connected to the pressure relief channel 7, and the horizontal part 122 just blocks the ventilation port 8, so that the interior of the box 1 is cut off from the pressure relief channel 7. After all the high temperature and high pressure arc gas enters the pressure relief channel 7 along the protective sleeve 5, it is quickly discharged from the box 1 through the exhaust port 9 and the pressure relief port 10 under the action of the upward airflow generated by the exhaust fan 23, realizing the directional release of high temperature and high pressure gas and preventing the high temperature arc gas from spreading into the interior of the box 1 and damaging other electrical components.

[0047] Meanwhile, reference Figure 3 , Figure 8 and Figure 9 The electric arc generated by the arcing is guided and divided into the gaps between multiple arc-extinguishing plates 25, dispersing the high voltage into multiple segments of lower voltage, achieving rapid arc extinguishing and reducing the hazards caused by the arc. When the vertical part 121 of the detection plate 12 abuts against the side wall of the pressure relief channel 7, the upward airflow generated by the exhaust fan 23 will also quickly carry away the heat on the arc-extinguishing plate 25, accelerating the cooling rate of the arc-extinguishing plate 25.

[0048] In addition, refer to Figure 5 and Figure 8When the detection plate 12 is pushed into the pressure relief channel 7 by high-pressure gas, and the vertical part 121 is in contact with the side wall of the pressure relief channel 7, the trigger button 26 inside the pressure relief channel 7 will be pressed, which will power on the buzzer 27 on the door panel 2 to sound an alarm, reminding the staff to find the fault in time and carry out maintenance, so as to avoid the failure to deal with the fault in time and cause a greater safety accident.

[0049] This invention enables automatic switching between heat dissipation and pressure relief, forming a complete protection system from arc extinguishing and isolation to directional pressure relief, thus comprehensively improving the operational safety of the integrated power distribution box.

[0050] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A comprehensive distribution box with an arc pressure relief channel, comprising a box body (1), a door panel (2) rotatably mounted on the box body (1), an installation plate (3) provided inside the box body (1), and a fuse switch (4) fixedly mounted on the installation plate (3), characterized in that, The fuselage switch (4) is fitted with a protective sleeve (5), which is horizontally fixed on the mounting plate (3). The protective sleeve (5) has a wiring port (6) for wiring the fuselage switch (4). The door panel (2) has a pressure relief channel (7) on the side facing the protective sleeve (5). The bottom of the pressure relief channel (7) has a vent (8), and the top of the pressure relief channel (7) has an exhaust port (9). The top of the housing (1) has a pressure relief port (10) that matches the exhaust port (9). The side of the pressure relief channel (7) facing the protective sleeve (5) has a connection port (11). When the door panel (2) is closed... The connection port (11) is aligned with the port of the protective sleeve (5) and connects the protective sleeve (5) to the pressure relief channel (7). A detection plate (12) is slidably arranged inside the protective sleeve (5). The detection plate (12) includes a vertical part (121) and a horizontal part (122). The horizontal part (122) faces the direction of the melt knife switch (4). The vertical part (121) is used to separate the protective sleeve (5) from the pressure relief channel (7). When the vertical part (121) slides to fit against the side wall of the pressure relief channel (7), the protective sleeve (5) is connected to the pressure relief channel (7), and the horizontal part (122) separates the vent (8) from the exhaust port (9).

2. The integrated distribution box with an arc pressure relief channel according to claim 1, characterized in that, The protective sleeve (5) has a sliding abutment sleeve (13) inside. The abutment sleeve (13) has a rubber ring (14) at one end facing the door panel (2). The protective sleeve (5) has a push spring (15) inside. The push spring (15) is used to keep the protective sleeve (5) pushed towards the door panel (2). The detection plate (12) is slidably disposed inside the abutment sleeve (13).

3. The integrated distribution box with an arc pressure relief channel according to claim 2, characterized in that, The protective sleeve (5) has multiple heat dissipation vents (16) on its two side walls near the mounting plate (3). Multiple shields (17) are rotatably mounted inside the protective sleeve (5) corresponding to the multiple heat dissipation vents (16). A connecting rod (18) is hinged to the free end of the shields (17) on the same side. The detection plate (12) is made of insulating material. A metal sheet (19) is fixedly mounted at the bottom of the horizontal part (122) of the detection plate (12). A permanent magnet (20) is provided on the bottom surface inside the abutting sleeve (13). The abutting sleeve (13) faces the mounting plate (3). 3) One end is provided with a limiting block (21). When the vertical part (121) abuts against the limiting block (21), the metal sheet (19) is aligned with the permanent magnet (20). Each connecting rod (18) has an "L"-shaped abutment block (22) at the bottom. When the vertical part (121) abuts against the limiting block (21), the horizontal part (122) pushes the abutment block (22) toward the mounting plate (3) so that the cover plate (17) rotates to open the heat dissipation port (16). After the cover plate (17) rotates, it forms an inclined angle (α) with the side wall of the protective sleeve (5).

4. A comprehensive distribution box with an arc pressure relief channel according to claim 3, characterized in that, The pressure relief channel (7) is equipped with an exhaust fan (23), which is used to generate vertically upward airflow.

5. A comprehensive distribution box with an arc pressure relief channel according to claim 3, characterized in that, The included angle (α) is less than 90°.

6. A comprehensive distribution box with an arc pressure relief channel according to claim 3, characterized in that, The bottom of the horizontal part (122) is also provided with a plurality of metal strips (24), which are parallel to the metal sheet (19) and are arranged at parallel intervals.

7. A comprehensive distribution box with an arc pressure relief channel according to claim 4, characterized in that, The protective sleeve (5), the shield (17) and the connecting rod (18) are all made of insulating material. Multiple arc-extinguishing plates (25) are vertically arranged on the detection plate (12). The multiple arc-extinguishing plates (25) are arranged in parallel and spaced apart. The bottom edge and side edge of the arc-extinguishing plate (25) are respectively glued to the horizontal part (122) and the vertical part (121).

8. A comprehensive distribution box with an arc pressure relief channel according to claim 1, characterized in that, The pressure relief channel (7) is equipped with a trigger button (26), which is aligned with the connection port (11). A buzzer (27) is fixedly installed on the door panel (2), and the trigger button (26) is electrically connected to the buzzer (27).

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