A smart meter box for power marketing

Abstract

The present invention relates to an intelligent meter box for electric power marketing applied in the technical field of intelligent meter boxes, which comprises a safety guarantee mechanism, an intelligent air circuit breaker, a safety intelligent controller, a locking mechanism and a safety intelligent controller. The safety guarantee mechanism comprises a self-power-off device arranged on the intelligent air circuit breaker and a temperature sensor arranged in a box body; the locking mechanism comprises a lock body assembly installed on the box door, a lock tongue installed on the box body and corresponding to the position of the lock body assembly, the lock body assembly comprises a lock hole, a lock head, a limit groove, a spring 2, a reduction motor, a Hall sensor and a battery respectively installed in a locking support shell; an intelligent control module, an instruction module and a detection module are arranged in the safety intelligent controller; the above structure enables the intelligent meter box to adjust the response strategy according to the load condition of the load in the box body, and the lock body assembly of the meter box is automatically unlocked when the power is cut off, which fully reflects the intelligence, automation and safety of the intelligent meter box.

Description

Technical Field

[0001] The present invention relates to an electric meter box, in particular to an intelligent electric meter box for electric power marketing applied in the technical field of intelligent electric meter boxes. Background Art

[0002] With the progress of the times and the development of society, the power industry is constantly moving forward, and various technologies are used in power equipment, including meter boxes.

[0003] In recent years, with the implementation of my country's "one household, one meter" policy and the completion of rural power grid transformation, the number of electricity meters has increased dramatically. At the same time, the demand for the number of meter boxes and the functional requirements have also increased accordingly. The current meter boxes are not very intelligent. When the load power in the meter box is large, it is not easy to detect the status in the meter box in a timely and effective manner. It is also inconvenient to deal with fire and high temperature caused by short circuit or long-term high-load operation in the meter box in a timely manner. Therefore, it is necessary to detect the load in the meter box to reduce the possibility of accidents.

[0004] The specification of Chinese invention patent No. CN201910656045.7 discloses a smart meter box, including a box body; an electric meter is installed in the box body, a water tank for storing rainwater is provided on the top of the box body, and a water absorbent sponge is provided in the water tank; a group of pendulum rods are hinged on the side of the box body, the end of the pendulum rod located in the box body is plate-shaped, and the end of the pendulum rod located outside the box body is provided with a water storage tank, and the bottom of the water tank is connected to the corresponding position of the pendulum rod with a water outlet pipe; this device uses rainwater dripping on each pendulum rod on the outside of the box body under the action of lateral wind force, and the rainwater slowly gathers in the water storage tank. The falling of the water storage tank drives the swing of the pendulum rod at one end of the box body, which accelerates the air flow near the electric meter in the box body, thereby reducing the temperature of the electric meter and ensuring accurate and normal measurement of the electric energy meter.

[0005] When the above scheme is implemented, its design takes into account lowering the temperature inside the meter box, but insufficient consideration is given to changes in the load inside the meter box, such as accidents caused by short circuits, open circuits, high temperatures, etc. caused by load aging, and corresponding judgments cannot be made for various emergencies. At the same time, the currently used meter boxes may cause the lock body to lose power and the box door to be locked due to internal fire. When maintenance or fire fighting is required, the only option is to destroy the lock body to open the smart meter box. This causes certain inconveniences and dangers to maintenance and fire fighting personnel. Therefore, a smart meter box with a high degree of intelligence that can detect the internal load status and does not lock the box door when the power is off is needed. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing smart meter box may cause the box door to be locked after power failure, causing inconvenience for maintenance, and failing to timely detect the situation inside the meter box. When an accident occurs, it often causes certain losses and poses a threat to the safety of surrounding personnel.

[0007] In order to solve the above problems, the present invention provides a smart meter box for power marketing, including a box body and a box door, the box door is hinged to the inner wall of one side of the box body, a plurality of smart energy meters and a plurality of smart air circuit breakers are installed in the box body, and also includes:

[0008] The locking mechanism is installed on the box door. The locking mechanism includes a lock body assembly installed on the box door, a lock tongue installed on the box body corresponding to the position of the lock body assembly, and an NFC card reader electrically connected to the lock body assembly. The lock body assembly includes a locking support shell and a lock hole, a lock head, a limit groove, a second spring, a reduction motor, a Hall sensor and a battery respectively installed in the locking support shell. The lock hole passes through the outer wall of the locking support shell, the limit groove is arranged directly below the lock hole, the lock head is slidably connected to the limit groove, the lock head is meshed with the gear on the output end of the reduction motor through teeth, the second spring is sleeved with the upper end of the lock head, the reduction motor is fixedly connected to the locking support shell, the Hall sensor corresponds to the lock hole, and the battery is electrically connected to the Hall sensor and the reduction motor respectively;

[0009] The heat dissipation mechanism includes an air inlet fan and an air outlet fan installed in the box;

[0010] Safety guarantee mechanism, the safety guarantee mechanism includes a self-power-off device and a temperature sensor installed in the box, the self-power-off device is installed corresponding to the intelligent air circuit breaker, and is used to control the action of the intelligent air circuit breaker;

[0011] Safety intelligent controller, the safety intelligent controller is fixedly installed on the box, and is equipped with an intelligent control module, a command module, and a detection module. The reduction motor, the self-power-off device, the lock body assembly, the air intake fan, and the air exhaust fan are all electrically connected to the command module, and the temperature sensor, the NFC card reader, and the intelligent air circuit breaker are all electrically connected to the detection module. When the temperature detected by the temperature sensor is higher than the warning value, the lock body assembly is controlled to open the cabinet door, and the reduction motor is controlled to rotate. The gear at the output end of the reduction motor drives the lock head to move down. After the lock head moves to the bottom, the reduction motor stops rotating, and the lock head is fixed, waiting for maintenance personnel.

[0012] In the above-mentioned smart meter box for power marketing, the load condition in the meter box can be detected. When the load in the meter box catches fire due to short circuit or device aging, the fire extinguishing agent can be sprayed in time. When the power is off in the meter box, the lock assembly will unlock automatically, effectively avoiding the box door from being locked due to power outage, which provides certain convenience for maintenance personnel to deal with power outages, fires, etc.

[0013] As a further improvement of the present application, a first through hole is provided at the location where the air inlet fan is fixed to the box body, a second through hole is provided at the location where the air outlet fan is fixed to the box body, and filters are installed in the first through hole and the second through hole.

[0014] As a further improvement of the present application, the intelligent air circuit breaker includes a main switch and multiple sub-switch, the number of sub-switch is equal to and corresponds one to one with the smart electric energy meter, each sub-switch is electrically connected to the corresponding smart electric energy meter, and the main switch is electrically connected to each sub-switch.

[0015] As a further improvement of the present application, the self-power-off device includes a limiting support shell and a bias motor, a spring 1, a limiting mechanism, a guide rail, and a push rod respectively installed in the limiting support shell. The bias motor is fixedly installed on the top of the inner wall of the limiting support shell, the guide rail is fixedly installed on the side of the inner wall of the limiting support shell, the push rod is slidably connected to the guide rail, the push rod is meshed with the gear on the output end of the bias motor through teeth, and the spring 1 is an annular structure and is sleeved on the upper end of the push rod.

[0016] As a further improvement of the present application, the push rod is socketed with the limiting mechanism, and the limiting mechanism is fixedly installed on the top of the outer wall of the limiting support shell. The limiting mechanism includes a slide rail, a latch, and a baffle. The slide rail and the baffle are fixedly installed on the top outer wall of the limiting support shell, and the latch is slidably connected to the slide rail.

[0017] As a further improvement of the present application, an air duct is installed on the inner wall of the box, and the air duct is connected to the output end of the fire extinguishing gas cylinder.

[0018] As a further improvement of the present application, the inner cavity of the box is divided into a smart meter area and a circuit breaker area by a partition, the temperature sensor is provided with two detection probes, and the two detection probes are respectively located in the smart meter area and the circuit breaker area, and the air duct is provided with two output ends, and the two output ends are respectively located in the smart meter area and the circuit breaker area.

[0019] As a further improvement of the present application, the two output ends of the air duct are respectively equipped with air solenoid valve 1 and air solenoid valve 2, which are both electrically connected to the command module. The smart electric energy meter and air solenoid valve 2 are located in the smart electric meter area, and the self-power-off device, air solenoid valve 1, smart air circuit breaker and fire extinguishing gas cylinder are all located in the circuit breaker area.

[0020] To summarize, the detection module of the safety intelligent controller reads the information received by the temperature sensor and the intelligent air circuit breaker, and after analysis and processing by the intelligent control module, the corresponding components are controlled by the instruction module, so that the smart meter box can accurately measure the load condition of the load in the box, and the smart meter box can adjust the response strategy according to the load condition of the load in the box. When the meter box is powered off, the lock body assembly unlocks itself, reducing the situation where the box door is locked due to power outages. The smart meter box can be opened without destroying the lock body, which greatly improves the safety of the smart meter box and fully reflects the intelligence, automation and safety of the smart meter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The front view of the device of the first, second and third embodiments of the present application;

[0022] Figure 2 This is a schematic diagram of the lock body assembly structure of the first, second and third embodiments of the present application;

[0023] Figure 3 This is a schematic diagram of the structure of the self-power-off device of the first, second and third embodiments of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the restriction mechanism of the third embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the equipment structure of the first, second and third implementation modes of the present application;

[0026] Figure 6 It is a schematic diagram of the side structure of the device of the first, second and third embodiments of the present application;

[0027] Figure 7 Schematic diagram of the exhaust fan structure of the first, second and third embodiments of the present application;

[0028] Figure 8 This is a control principle block diagram of the first, second and third types of safety intelligent controllers of this application.

[0029] Description of the numbers in the figure:

[0030] 1. Box body; 2. Box door; 3. Air duct; 4. Air solenoid valve 1; 5. Lock tongue; 6. Fire extinguisher cylinder; 7. Filter; 8. Temperature sensor; 9. Safety intelligent controller; 10. Intelligent air circuit breaker; 11. Lock body assembly; 12. NFC card reader; 13. Inlet fan; 14. Exhaust fan; 15. Main switch; 16. Sub-switch; 17. First through hole; 18. Second through hole; 19. Circuit breaker area; 20. Smart meter area; 21. Bias motor; 22. Spring 1; 23. Limiting mechanism; 24. Guide rail; 25. Push rod; 26. Self-power-off device; 27. Slide rail; 28. Latch; 29. ​​Baffle; 30. Keyhole; 31. Lock head; 32. Spring 2; 33. Gear motor; 34. Hall sensor; 35. Battery; 36. Limiting slot; 37. Air guide solenoid valve 2; 38. Smart energy meter. DETAILED DESCRIPTION

[0031] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-Figure 3 and Figure 5-Figure 8 A smart meter box for power marketing is shown, comprising a box body 1 and a box door 2, wherein the box door 2 is hinged to an inner wall of one side of the box body 1, and a plurality of smart energy meters 38 and a plurality of smart air circuit breakers 10 are installed in the box body 1, and further comprising: a locking mechanism, a heat dissipation mechanism, a safety guarantee mechanism, and a safety intelligent controller 9;

[0034] The locking mechanism is installed on the box door 2, and the locking mechanism includes a lock body assembly 11 installed on the box door 2, a lock tongue 5 installed on the box body 1 and corresponding to the position of the lock body assembly 11, and an NFC card reader 12 electrically connected to the lock body assembly 11. The lock body assembly 11 includes a locking support shell and a lock hole 30, a lock head 31, a limiting groove 36, a second spring 32, a reduction motor 33, a Hall sensor 34 and a battery 35 respectively installed in the locking support shell. The lock hole 30 passes through the outer wall of the locking support shell, the limiting groove 36 is arranged directly below the lock hole 30, the lock head 31 is slidably connected to the limiting groove 36, the lock head 31 is meshed with the gear on the output end of the reduction motor 33 through teeth, the second spring 32 is sleeved with the upper end of the lock head 31, the reduction motor 33 is fixedly connected to the locking support shell, the Hall sensor 34 corresponds to the lock hole 30, and the battery 35 is electrically connected to the Hall sensor 34 and the reduction motor 33 respectively;

[0035] The heat dissipation mechanism includes an air inlet fan 13 and an air outlet fan 14 installed in the box body 1;

[0036] The safety mechanism includes a self-power-off device 26 and a temperature sensor 8 installed in the box 1. The self-power-off device 26 is installed corresponding to the intelligent air circuit breaker 10 to control the operation of the intelligent air circuit breaker 10.

[0037] The safety intelligent controller 9 is fixedly installed on the box body 1. The safety intelligent controller 9 is provided with an intelligent control module, a command module, and a detection module. The reduction motor 33, the self-power-off device 26, the lock body assembly 11, the air intake fan 13, and the air outlet fan 14 are all electrically connected to the command module, and the temperature sensor 8, the NFC card reader 12, and the intelligent air circuit breaker 10 are all electrically connected to the detection module.

[0038] Among them, the intelligent air circuit breaker 10 and the intelligent electric energy meter 38 are common electrical components in the meter box in this field. They are existing technologies well known to people in this field and are not within the protection scope of the technical solution of this application. This application will not go into details about their specific structures and working principles.

[0039] The detection module of the safety intelligent controller 9 reads the information received by the temperature sensor 8 and the intelligent air circuit breaker 10, and after being analyzed and processed by the intelligent control module, the corresponding components are controlled by the instruction module, so that the smart meter box can accurately measure the load condition of the load in the box 1, so that the smart meter box can adjust the response strategy according to the load condition of the load in the box 1, and respond to emergencies intelligently and automatically. It can detect high temperature or overload conditions of the load in the box 1 and respond, reflecting the intelligence and automation of the smart meter box.

[0040] In this embodiment, the inner cavity of the box body 1 is divided by a partition to form a smart meter area 20 and a circuit breaker area 19. The smart energy meter 38 is located in the smart meter area 20. The self-power-off device 26, the smart air circuit breaker 10 and the fire extinguishing gas cylinder 6 are all located in the circuit breaker area 19. The temperature sensor 8 is provided with two detection probes, and the two detection probes are respectively located in the smart meter area 20 and the circuit breaker area 19. When the smart meter box is operating normally, the temperature sensor 8 will detect the temperature of the smart meter area 20 and the circuit breaker area 19 in real time and send it to the detection module. The detection module processes the information and forwards it to the intelligent control module. The intelligent control module compares the temperature data sent by the detection module with the set temperature (the smart control module is preset with the safe temperature of the smart meter area 20 and the circuit breaker area 19 under the current environment).

[0041] When the temperature detected by the temperature sensor 8 is slightly higher than the set temperature, the intelligent control module sends a slightly high temperature reminder signal to the command module, and the command module controls the heat dissipation mechanism to start working. The heat dissipation mechanism includes an air intake fan 13 and an air outlet fan 14 installed in the box body 1. In a preferred installation method, the air intake fan 13 is installed at the upper right corner of the inner wall of the box body 1, and the air outlet fan 14 is installed at the lower left corner of the inner wall of the box body 1. A first through hole 17 is provided at the fixed installation position of the air intake fan 13 and the box body 1, and a second through hole is provided at the fixed installation position of the air outlet fan 14 and the box body 1 18. A filter screen 7 is installed in the first through hole 17 and the second through hole 18. The air inlet fan 13 and the air outlet fan 14 rotate to increase the flow rate of the air in the box body 1 to take away excess heat. The filter screen 7 located at the air inlet fan 13 and the air outlet fan 14 can prevent fallen leaves, flying insects, etc. from entering the smart meter box, thereby avoiding these situations that may cause accidents; when the temperature detected by the temperature sensor 8 is higher than the set temperature but lower than the warning temperature, the power of the heat dissipation mechanism also changes with the temperature. The more the temperature exceeds the set temperature, the higher the power of the heat dissipation mechanism.

[0042] When the temperature detected by the temperature sensor 8 is higher than the warning value (the warning values ​​of the smart meter area 20 and the circuit breaker area 19 in the current environment are preset in the intelligent control module), the detection module reads the voltage and current of the smart energy meter 38 and sends the information to the intelligent control module, so that the intelligent control module calculates the real-time power and compares it with the power of the smart energy meter 38 working normally (the power of the smart energy meter 38 working normally in the current environment is preset in the intelligent control module) to confirm whether the high temperature is caused by a short circuit, overload, etc. of the smart energy meter 38. If it is confirmed that the high temperature is caused by a fault of one or more smart energy meters 38, an alarm will be issued first, and the maintenance personnel will be notified. Then, the self-power-off device 26 will be controlled by the instruction module to cut off the main switch 15. The intelligent air circuit breaker 10 includes a main switch 15 and multiple sub-switches 16. The number of sub-switches 16 is equal to and corresponds to the number of smart energy meters 38. Each sub-switches 16 is electrically connected to the corresponding smart energy meter 38, and the main switch 15 is electrically connected to each sub-switches 16. The self-power-off device 26 includes a limiting support shell The bias motor 21, the guide rail 24, and the push rod 25 are respectively installed in the limiting support shell. The bias motor 21 is fixedly installed on the top of the inner wall of the limiting support shell, and the guide rail 24 is fixedly installed on the side of the inner wall of the limiting support shell. The push rod 25 is slidably connected with the guide rail 24. The push rod 25 is meshed with the gear on the output end of the bias motor 21 through the teeth. After receiving the command of the instruction module, the internal bias motor 21 continues to rotate, and the output end gear drives the push rod 25 to move downward continuously. The push rod 25 will resist the gear on the output end of the bias motor 21 during the downward movement. The switch of the intelligent air circuit breaker 10 gives the switch a downward thrust to cut off the power of the intelligent air circuit breaker 10. The push rod 25 continues to move downward until it contacts the switch of the intelligent air circuit breaker 10 to avoid accidental closing of the switch before maintenance and cause unnecessary losses. At the same time, the command module controls the lock body assembly 11 to open the cabinet door and controls the reduction motor 33 to rotate. The gear at the output end of the reduction motor 33 drives the lock head 31 to move downward. After the lock head 31 moves to the bottom, the reduction motor 33 stops rotating and fixes the lock head 31 to wait for maintenance personnel.

[0043] An air duct 3 is installed on the inner wall of the box body 1, and the air duct 3 is connected to the output end of the fire extinguishing gas cylinder 6. An air duct solenoid valve 1 4 and an air duct solenoid valve 2 37 are installed on the output end of the air duct 3. The air duct solenoid valve 1 4 and the air duct solenoid valve 2 37 are both electrically connected to the command module. The air duct solenoid valve 2 37 is located in the smart meter area 20, and the air duct solenoid valve 1 4 is located in the circuit breaker area 19. If it is not caused by a failure of the smart electric energy meter 38, the intelligent control module will open the air duct solenoid valve 1 4 and the air duct solenoid valve 2 37 through the command module. The opening of the air duct solenoid valve 1 4 and the air duct solenoid valve 2 37 will release a part of the compressed gas in the fire extinguishing gas cylinder 6 (a preferred fire extinguishing gas cylinder 6 is a carbon dioxide compressed gas cylinder) into the box body 1 to prevent sudden fire and at the same time play a certain cooling effect.

[0044] The second implementation method:

[0045] Figure 1-Figure 3 and Figure 5-Figure 8 A smart meter box for electric power marketing is shown. Different from the first embodiment, when a fire suddenly breaks out in the smart meter box due to a short circuit or other reasons, the detection module will receive information from the temperature sensor 8 and the smart energy meter 38, and send it to the smart control module. The smart control module compares the detected temperature with the fire temperature (the smart control module is preset with the fire temperatures of the smart meter area 20 and the circuit breaker area 19 under the current environment). When the temperature reaches the fire temperature and the voltage and current also show abnormalities, the smart control module immediately sends an alarm to the maintenance personnel, and controls the instruction module to stop the heat dissipation mechanism immediately. At the same time, the self-power-off device 26 immediately cuts off the main switch 15, and then opens the guide The gas solenoid valve 1 4 and the gas guide solenoid valve 2 37 will spray all the fire extinguishing agent in the fire extinguishing gas cylinder 6 into the box body 1 (a preferred installation method of the gas guide pipe 3 is to be installed on the top of the inner wall of the box body 1, and the gravitational potential energy is used to completely cover the entire inside of the smart meter box), and the temperature sensor 8 will continue to detect the temperature inside the box body 1. If it is detected that the temperature drops and gradually returns to the normal level, the intelligent control module will control the instruction module to open the heat dissipation mechanism to discharge the gas generated by the combustion in the box body 1, and at the same time control the lock body assembly 11 to open the cabinet door for maintenance personnel to inspect; if the temperature fails to drop in time and still maintains a certain temperature, it will remain in its original state and issue a warning to the maintenance personnel to avoid causing harm to the maintenance personnel.

[0046] The air duct 3 is provided with two output ends, and the two output ends are respectively located in the smart meter area 20 and the circuit breaker area 19. The two output ends of the air duct 3 are respectively installed with an air solenoid valve 1 4 and an air solenoid valve 2 37. The temperature sensor 8 can detect the temperature of the smart meter area 20 and the circuit breaker area 19 in real time and send them to the detection module respectively. Therefore, when a sudden fire occurs, the intelligent control module can determine which specific area is on fire through the temperature information sent by the detection module, thereby controlling the command module to open the corresponding air solenoid valve and spray all the fire extinguishing agents to the corresponding area. This method can effectively increase the probability of extinguishing the flame and improve safety.

[0047] In addition, the Hall sensor 34 can detect whether the lock tongue 5 is locked in the lock hole 30 by the lock head 31; after receiving the command from the instruction module, the lock body assembly 11 is electrically connected to the NFC card reader 12 (a preferred installation method of the NFC card reader 12 is to be installed on the box door 2 corresponding to the lock body assembly 11). The maintenance personnel can open the smart meter box with the encrypted NFC card, which is convenient for the maintenance personnel's daily inspection and emergency maintenance.

[0048] It is worth mentioning that when maintenance personnel need to open the smart meter box, they need to use an NFC card to authenticate their identity at the NFC card reader 12. After the maintenance is completed, they still need to swipe the card to confirm before closing the box door 2. At the same time, the Hall sensor 34 can detect whether the lock tongue 5 is in the specified position. After swiping the card to confirm closing the box door 2, the Hall sensor 34 does not detect the lock tongue 5 in the specified position within a certain period of time. The detection module will send a signal to the intelligent control module that the box door 2 is not tightly closed. After receiving the signal, the intelligent control module sends a prompt message to the maintenance personnel, reminding them that the box door 2 is not completely closed. This design can effectively solve the problem of maintenance personnel not closing the box door 2 after maintenance, causing potential dangers.

[0049] The third implementation method:

[0050] Figure 1-Figure 4 A smart meter box for electric power marketing is shown. Different from the first and second embodiments, if the smart meter box is completely powered off, the self-power-off device 26 will automatically cut off the main switch 15. The self-power-off device 26 also includes a spring 22 and a limiting mechanism 23 installed in the limiting support shell. The spring 22 is an annular structure and is sleeved with the upper end of the push rod 25.

[0051] A spring 22 sleeved on the upper end of the push rod 25 has one end against the top of the inner wall of the limiting support shell, and the other end against the annular protrusion on the push rod 25. When the bias motor 21 is energized, the output end gear thereof meshes with the teeth of the push rod 25. The rotation of the gear can drive the push rod 25 to move upward, compressing the spring 22. When the push rod 25 moves to the top, the bias motor 21 remains and no longer rotates, and the spring 22 remains in a compressed state. When the smart meter box is completely powered off, the bias motor 21 can no longer maintain the locking effect, and the spring 22 is released, driving the push rod 25 to move downward, pushing the switch of the main switch 15, so that the main switch 15 is disconnected.

[0052] In addition, the push rod 25 is socketed with the limiting mechanism 23, and the limiting mechanism 23 is fixedly installed on the top of the outer wall of the shell. The limiting mechanism 23 includes a slide rail 27, a latch 28, and a baffle 29. The slide rail 27 and the baffle 29 are fixedly installed on the outer wall of the top of the shell. The latch 28 is slidably connected with the slide rail 27. After the power-off maintenance is completed, it is necessary to try to power on. However, when the smart meter box is powered off, the push rod 25 presses the main switch 15. At this time, the push rod 25 is pushed upward to the bottom, and the latch 28 in the slide rail 27 is slid toward the baffle 29. The push rod 25 has a through hole at the corresponding position. The latch 28 is pushed into the through hole to temporarily lock the push rod 25 for line debugging. After the debugging and maintenance are completed, the latch 28 is pushed back to its original position, and the self-power-off device 26 resumes normal use.

[0053] Similarly, the design of the lock body assembly 11 is similar. The spring 2 32 is sleeved on the upper end of the lock head 31. When the smart meter box is completely powered off, the cabinet door will automatically open. The spring 2 32 sleeved on the upper end of the lock head 31 has one end against the top of the inner wall of the locking support shell, and the other end against the lock head 31. When the reduction motor 33 is energized, its output end gear is engaged with the teeth of the lock head 31. The rotation of the gear can drive the lock head 31 to move up, compressing the spring 2 32. When the lock head 31 moves to the top, the reduction motor 33 remains and no longer rotates. The spring 2 32 remains in a compressed state. When the smart meter box is completely powered off, the reduction motor 33 can no longer maintain the locking effect. The spring 2 32 is released, driving the lock head 31 to move down, and the cabinet door automatically opens.

[0054] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A smart meter box for power marketing, comprising: A box body (1) and a box door (2), wherein the box door (2) is hinged to an inner wall of one side of the box body (1), and a plurality of smart electric energy meters (38) and a plurality of smart air circuit breakers (10) are installed in the box body (1), characterized in that it also includes: A locking mechanism, the locking mechanism being mounted on a box door (2), the locking mechanism comprising a lock body assembly (11) mounted on the box door (2), a lock tongue (5) mounted on the box body (1) and corresponding to the position of the lock body assembly (11), and an NFC card reader (12) electrically connected to the lock body assembly (11); the lock body assembly (11) comprising a locking support shell and a lock hole (30), a lock head (31), a limit groove (36), a second spring (32), a reduction motor (33), a Hall sensor (34) and a battery (35) respectively mounted in the locking support shell, The lock hole (30) passes through the outer wall of the locking support shell, the limiting groove (36) is arranged directly below the lock hole (30), the lock head (31) is slidably connected to the limiting groove (36), the lock head (31) is meshed with the gear on the output end of the reduction motor (33) through teeth, the second spring (32) is sleeved with the upper end of the lock head (31), the reduction motor (33) is fixedly connected to the locking support shell, the Hall sensor (34) corresponds to the lock hole (30), and the battery (35) is electrically connected to the Hall sensor (34) and the reduction motor (33) respectively; A heat dissipation mechanism, the heat dissipation mechanism comprising an air inlet fan (13) and an air outlet fan (14) installed in the box body (1); A safety mechanism, the safety mechanism comprising a self-power-off device (26) and a temperature sensor (8) installed in the box (1), the self-power-off device (26) being installed corresponding to the intelligent air circuit breaker (10) and used to control the operation of the intelligent air circuit breaker (10); A safety intelligent controller (9), the safety intelligent controller (9) is fixedly mounted on a box body (1), the safety intelligent controller (9) is provided with an intelligent control module, an instruction module, and a detection module, the reduction motor (33), the self-power-off device (26), the lock body assembly (11), the air intake fan (13), and the air outlet fan (14) are all electrically connected to the instruction module, the temperature sensor (8), the NFC card reader (12), and the intelligent air circuit breaker (10) are all electrically connected to the detection module, and when the temperature detected by the temperature sensor (8) is higher than a warning value, the lock body assembly (11) is controlled to open the cabinet door, the reduction motor (33) is controlled to rotate, and the gear at the output end of the reduction motor (33) drives the lock head (31) to move downward, and after the lock head (31) moves to the bottom, the reduction motor (33) stops rotating, and the lock head (31) is fixed to wait for maintenance personnel.

2. The smart meter box for power marketing according to claim 1, characterized in that: A first through hole (17) is provided at the fixed mounting position of the air inlet fan (13) and the housing (1), a second through hole (18) is provided at the fixed mounting position of the air outlet fan (14) and the housing (1), and filter screens (7) are installed in the first through hole (17) and the second through hole (18).

3. The smart meter box for electric power marketing according to claim 1, characterized in that: The intelligent air circuit breaker (10) comprises a main switch (15) and a plurality of sub-switches (16); the number of the sub-switches (16) is equal to and corresponds to the number of the intelligent electric energy meters (38); each of the sub-switches (16) is electrically connected to a corresponding intelligent electric energy meter (38); and the main switch (15) is electrically connected to each of the sub-switches (16).

4. The smart meter box for electric power marketing according to claim 1, characterized in that: The self-power-off device (26) comprises a limiting support shell, and a biasing motor (21), a spring (22), a limiting mechanism (23), a guide rail (24), and a push rod (25) respectively mounted in the limiting support shell, wherein the biasing motor (21) is fixedly mounted on the top of the inner wall of the limiting support shell, the guide rail (24) is fixedly mounted on the side of the inner wall of the limiting support shell, the push rod (25) is slidably connected to the guide rail (24), the push rod (25) is meshed with a gear on the output end of the biasing motor (21) through teeth, and the spring (22) is an annular structure and is sleeved with the upper end of the push rod (25).

5. The smart meter box for electric power marketing according to claim 4, characterized in that: The push rod (25) is sleeved with the limiting mechanism (23); the limiting mechanism (23) is fixedly mounted on the top of the outer wall of the limiting support shell; the limiting mechanism (23) comprises a slide rail (27), a latch (28), and a baffle (29); the slide rail (27) and the baffle (29) are fixedly mounted on the top outer wall of the limiting support shell; the latch (28) is slidably connected to the slide rail (27).

6. The smart meter box for electric power marketing according to claim 1, characterized in that: An air guide pipe (3) is installed on the inner wall of the box body (1), and the air guide pipe (3) is connected to the output end of the fire extinguishing gas cylinder (6).

7. The smart meter box for electric power marketing according to claim 6, characterized in that: The inner cavity of the box body (1) is divided into a smart meter area (20) and a circuit breaker area (19) by a partition, the temperature sensor (8) is provided with two detection probes, and the two detection probes are respectively located in the smart meter area (20) and the circuit breaker area (19), and the air guide tube (3) is provided with two output ends, and the two output ends are respectively located in the smart meter area (20) and the circuit breaker area (19).

8. The smart meter box for electric power marketing according to claim 7, characterized in that: The two output ends of the air guide pipe (3) are respectively provided with an air guide solenoid valve 1 (4) and an air guide solenoid valve 2 (37), the air guide solenoid valve 1 (4) and the air guide solenoid valve 2 (37) are both electrically connected to the command module, the smart electric energy meter (38) and the air guide solenoid valve 2 (37) are located in the smart electric meter area (20), and the self-power-off device (26), the air guide solenoid valve 1 (4), the smart air circuit breaker (10) and the fire extinguishing gas cylinder (6) are all located in the circuit breaker area (19).

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