A high-security electricity metering box

Abstract

This invention belongs to the field of electricity metering technology, specifically a high-safety electricity metering box, including a box body and safety components. A meter is installed in the mounting chamber inside the box, and the meter is connected to the external power grid system via a connecting wire passing through the side wall of the mounting chamber. A storage chamber is located at the back of the box body, with a safety gap between the storage chamber and the mounting chamber. An information storage device is installed inside the storage chamber, and the information storage device is connected to the meter via a transmission wire. In the event of an overheating and spontaneous combustion accident involving the meter, this invention physically separates the mounting chamber containing the meter from the storage chamber containing the information storage device through the safety gap. A propulsion device is activated to move a movable plate downwards, physically severing the transmission wire, thereby completely isolating the information storage device and the meter. This prevents high-temperature flames from spreading along the transmission wire and threatening the information storage device, further reducing losses and ensuring information security.

Description

Technical Field

[0001] This invention belongs to the field of electrical energy metering technology, specifically a high-security electrical energy metering box. Background Technology

[0002] An electricity metering box is a specialized device used to measure electricity consumption. It consists of a box body, metering components, wiring devices, and protective structures. The box body is mostly made of metal or flame-retardant plastic, possessing corrosion resistance and anti-aging properties. Some outdoor boxes also feature sun and rain protection. The internal structure is functionally divided into enclosed metering, wiring, and control areas. The overall design considers metering accuracy, electrical safety, and tamper-proof requirements.

[0003] Under normal circumstances, the enclosed box structure of the electricity meter box protects the internal meter and other structures. However, in hot environments with high electricity consumption, the internal electronic components of the meter may accumulate heat or even short-circuit and burn under overload conditions, leading to spontaneous combustion or even explosion of the meter and causing an electrical fire. The flames and abnormal power fluctuations may be transmitted along the connecting wires to surrounding electrical equipment, causing the accident losses to expand. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a high-security electricity metering box.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention proposes a high-security electricity metering box, including a box body and a safety component. The box body is provided with a closed door. A meter is installed in the installation chamber inside the box body. The meter is connected to the external power grid system through a connecting wire passing through the side wall of the installation chamber.

[0006] The gas extinguishing system in the safety component is connected to the interior of the installation room;

[0007] A storage chamber is provided on the back of the box, and a safety door is provided at the opening of the storage chamber. A safety gap is provided between the storage chamber and the installation chamber. An information storage device is provided inside the storage chamber. The transmission wire of the information storage device passes through the installation hole provided in the inner wall of the safety gap and is connected to the meter.

[0008] The safety gap is connected to the gas extinguishing system, and a movable plate is vertically slidably installed inside the safety gap. The movable plate is connected to a propulsion device at the top of the safety gap, and a cutting blade is installed at the bottom of the movable plate.

[0009] Preferably, a top plate is provided on the inner wall of the installation chamber above the meter, and a horizontally extending support plate is provided at the bottom of the meter; the top plate is hollow to form a security cavity, the security cavity is connected to the gas extinguishing system through an inflation pipe, and security holes are evenly provided on the lower surface of the top plate, the security holes communicating with the security cavity;

[0010] The inner wall of the installation chamber is provided with sliding grooves on both sides of the meter. An intercepting plate is provided on the upper side of the meter. The horizontal cross-section of the intercepting plate is U-shaped, and the two ends of the intercepting plate slide through the sliding grooves and are connected to the moving plate.

[0011] Preferably, the upper surface of the pallet is uniformly provided with limiting grooves, and the connecting wire is embedded in the corresponding limiting groove;

[0012] The bottom of the interceptor plate is provided with a sealing blade, and the upper surface of the support plate is provided with a sealing groove corresponding to the sealing blade. The sealing groove has a conical cross-section. The sealing groove extends perpendicularly to the limiting groove and passes through each limiting groove in sequence.

[0013] Preferably, the vertical cross-section of the movable plate is L-shaped, and the vertical part of the movable plate slides in contact with the inner wall of the safety gap near the storage chamber, and the horizontal end of the top of the movable plate slides in contact with the inner wall of the safety gap near the installation chamber.

[0014] The information storage device has a transmission tube on its side wall, a transmission wire is located inside the transmission tube, the end of the transmission tube extends into the safety gap, and a cutting groove is provided on the outer surface of the transmission tube at the part corresponding to the cutting blade.

[0015] Preferably, a water storage chamber is provided in the inner wall of the safety gap near the storage chamber. The water storage chamber is connected to the air filling pipe through an atomizing pipe. An atomizer and a water pumping device are provided on the atomizing pipe.

[0016] The edge of the pallet located inside the installation chamber protrudes upward to form a flow-limiting part. The limiting groove extends into the safety gap. The bottom of the safety gap is connected to the inside of the water storage chamber through a recovery pipe, and a smoke exhaust fan is installed in the middle of the recovery pipe.

[0017] Preferably, a connecting pipe is uniformly arranged on the lower surface of the top plate, the top of the connecting pipe is connected to the security hole, and the bottom of the connecting pipe is connected to the inside of the meter.

[0018] Preferably, a mounting plate is provided on the top of the interceptor plate at the position corresponding to the upper side of the support plate, and a needle is provided on the lower side of the mounting plate. The bottom of the needle is slidably embedded into the security cavity, the bottom of the needle is located on the upper side of the connecting pipe, and the diameter of the needle is smaller than the inner diameter of the connecting pipe.

[0019] Preferably, the needle has a hollow interior forming a tubular structure, and the sidewalls of the needle are uniformly provided with connecting holes.

[0020] The beneficial effects of the present invention are as follows:

[0021] The high-safety electricity metering box of this invention, in order to prevent the spread of high-temperature flames and smoke along the transmission line when the meter overheats and spontaneously combusts, physically separates the installation chamber where the meter is located from the storage chamber where the information storage is located by a safety gap; and activates the propulsion device to move the moving plate down to physically cut off the transmission line, thereby completely separating the information storage and the meter, and preventing the high-temperature flames from spreading along the transmission line and threatening the information storage.

[0022] Furthermore, because the safety gap is connected to the gas extinguishing system, the extinguishing gas can directly fill the safety gap, further isolating the spread of high-temperature flames and ensuring the safety of the information storage device. In this way, when rescuers arrive, compared to the installation chamber where high-temperature flames are concentrated inside the box, they can more easily open the storage chamber from the safety door on the back of the box, take out the information storage device for transfer, and then start controlling the fire, further reducing losses and ensuring information security. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a schematic diagram of the interior structure of the installation room in this invention;

[0026] Figure 3 This is a partial sectional view of the invention from the side view direction;

[0027] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0028] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0029] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle;

[0030] Figure 7 This is a perspective view of the interceptor plate and the moving plate in this invention;

[0031] Figure 8 This is a perspective view of the interceptor plate and the moving plate in this invention from another angle.

[0032] In the diagram: 1. Box body, 11. Sealing door, 12. Installation chamber, 121. Slide, 13. Meter, 131. Connecting wire, 14. Storage chamber, 15. Safety gap, 151. Recycling pipe, 2. Information storage device, 21. Transmission wire, 22. Transmission pipe, 221. Cutting groove, 3. Safety component, 31. Moving plate, 311. Cutting knife, 32. Top plate, 321. Security cavity, 322. Connecting pipe, 323. Support plate, 331. Sealing groove, 332. Limiting groove, 333. Flow limiting part, 34. Intercepting plate, 341. Sealing knife, 342. Installation plate, 343. Needle, 344. Connecting hole, 344. Water storage chamber, 35. Atomizing pipe, 351. Inflation pipe, 36. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1:

[0035] As shown in the attached diagram of the instruction manual. Figures 1-8 As shown, a high-security electricity metering box includes a box body 1 and a safety component 3. The box body 1 has a closed door 11 at its opening. A meter 13 is installed in the installation chamber 12 inside the box body 1. The meter 13 is an electrical instrument commonly used in the prior art for calculating electricity consumption. The meter 13 is connected to the external power grid system through a connecting wire 131 passing through the side wall of the installation chamber 12.

[0036] Safety component 3 includes monitoring sensors installed on meter 13, including temperature and humidity sensors, smoke sensors, and current and voltage sensors. Safety component 3 also includes an external gas extinguishing system, which can be an existing carbon dioxide extinguishing system. The gas extinguishing system is connected to the interior of the installation chamber 12.

[0037] A storage chamber 14 is provided on the back of the housing 1. A safety door is provided at the opening of the storage chamber 14. A safety gap 15 is provided between the storage chamber 14 and the installation chamber 12. An information storage device 2 is provided inside the storage chamber 14. The transmission wire 21 of the information storage device 2 passes through the installation hole provided in the inner wall of the safety gap 15 and is connected to the meter 13.

[0038] The safety gap 15 is also connected to the gas extinguishing system, and a movable plate 31 is vertically slidably installed inside the safety gap 15. The movable plate 31 is connected to the propulsion device at the top of the safety gap 15. The propulsion device here can be an existing telescopic device. After activation, it pushes the movable plate 31 to move vertically. A cutting blade 311 is installed at the bottom of the movable plate 31. The cutting blade 311 can be made of non-metallic materials such as ceramic.

[0039] Specific workflow: During the installation process, the electricity metering box is generally installed in a location with dense power equipment to calculate the electricity consumption of the corresponding user; specifically, the meter 13 inside the box 1 is connected to the power grid system through the connecting wire 131, and the electricity consumption through the power grid system is displayed on the screen on the surface of the meter 13. At the same time, the corresponding data information is transmitted to the information storage 2 through the transmission wire 21 for storage, and the information is kept synchronized in real time.

[0040] Under normal circumstances, the enclosed enclosure 1 protects the internal structure such as the meter 13. However, in hot environments with high power consumption, the electronic components inside the meter 13 may accumulate heat or even short-circuit and burn under overload conditions, causing the meter 13 to spontaneously combust or even explode, resulting in an electrical fire accident. The flames and abnormal power fluctuations may be transmitted to the surrounding electrical equipment along the connecting wire 131, causing the accident losses to expand.

[0041] Therefore, this application includes a safety component 3, which houses a monitoring sensor inside the meter 13. This sensor monitors the load and temperature inside the meter 13 and triggers an alarm when an abnormality occurs. This allows maintenance personnel to control the power network to appropriately reduce the load or even shut down the meter for cooling, and to perform regular maintenance and replace aging components. If the meter 13 spontaneously combusts due to untimely maintenance, the smoke detector inside the housing 1 will sound an alarm and the controller will promptly disconnect the electrical connection between the connecting wire 131 and the external power grid, thus cutting off the power to the meter 13. Simultaneously, the gas extinguishing system will be activated, filling the meter 13 with extinguishing gas. This fills the internal area with extinguishing gas, isolates oxygen, disrupts the combustion conditions of the meter 13, and prevents the spread of the spontaneous combustion flame, thus extinguishing the fire. Alternatively, in the case of a more severe fire, this system can buy time for rescue personnel to arrive.

[0042] To ensure the safety of the energy consumption information stored inside the meter 13, the information storage element inside the meter 13 is usually salvaged and the recorded information data is restored as soon as the fire is brought under control, thereby reducing losses and providing information support for later analysis of the cause of the accident. In cases where the information cannot be salvaged, this application uses an information storage device 2 for information backup. Through a wired connection with the transmission line 21, information backup can be performed in real time during the operation of the meter 13, including user energy consumption data and working environment data collected by monitoring sensors, all of which can be stored in the information storage device 2 in real time.

[0043] To ensure the safety of the information storage device 2, it is installed in the storage chamber 14 on the back of the housing 1, so that it does not directly contact the information storage device 2. The data connection between the two is achieved only through the transmission wire 21 crossing the safety gap 15. In the event of an overheating and spontaneous combustion accident of the meter 13, in order to prevent the spread of high-temperature flames and smoke along the transmission wire 21, the installation chamber 12 where the meter 13 is located and the storage chamber 14 where the information storage device 2 is located are physically separated by the safety gap 15. After the data transmission status of the transmission wire 21 is cut off, the propulsion device is activated to move the moving plate 31 downward. The cutting blade 311 at the bottom of the moving plate 31 cuts the transmission wire. The physical disconnection of the transmission line 21 completely separates the information storage device 2 from the meter 13, preventing the high-temperature flames from spreading along the transmission line 21 and threatening the information storage device 2. Furthermore, because the safety gap 15 is connected to the gas extinguishing system, the extinguishing gas can directly fill the safety gap 15, further isolating the spread of the high-temperature flames and ensuring the safety of the information storage device 2. Thus, when rescue personnel arrive, compared to the installation chamber 12 where the high-temperature flames are concentrated inside the housing 1, they can more easily open the storage chamber 14 through the safety door on the back of the housing 1, retrieve the information storage device 2 for transfer, and then begin controlling the fire, further reducing losses and ensuring information security.

[0044] Example 2:

[0045] Based on Embodiment 1, a top plate 32 is provided on the inner wall of the installation chamber 12 above the meter 13, and a horizontally extending support plate 33 is provided at the bottom of the meter 13; the top plate 32 is hollow to form a security cavity 321, which is connected to the gas extinguishing system through an inflation pipe 36; security holes 322 are evenly provided on the lower surface of the top plate 32, and the security holes 322 communicate with the security cavity 321;

[0046] The inner wall of the installation chamber 12 is provided with sliding grooves 121 on both sides of the meter 13. An intercepting plate 34 is provided on the upper side of the meter 13. The horizontal cross section of the intercepting plate 34 is U-shaped, and the two ends of the intercepting plate 34 slide through the sliding grooves 121 and are connected to the moving plate 31. Limiting grooves 332 are evenly provided on the upper surface of the support plate 33. The connecting wires 131 are embedded into the corresponding limiting grooves 332, so that the arranged connecting wires 131 are separated by the evenly distributed limiting grooves 332, and are respectively limited.

[0047] The bottom of the interceptor plate 34 is provided with a sealing blade 341, and the upper surface of the support plate 33 is provided with a sealing groove 331 corresponding to the sealing blade 341. The sealing groove 331 has a conical cross section. The sealing groove 331 extends perpendicularly to the limiting groove 332 and passes through each limiting groove 332 in sequence.

[0048] Specific workflow: Based on the specific workflow in Example 1, since several meters 13 are usually installed inside the box 1, which are allocated to different user groups and are evenly distributed in the installation chamber 12 inside the box 1, when an accident occurs in one of the meters 13, because they are too close, the flame can easily spread to the surrounding meters 13, thereby increasing the loss.

[0049] In view of this, this application sets up an interceptor plate 34. When the monitoring sensor detects high temperature smoke in the installation chamber 12 inside the housing 1, it issues an alarm signal and simultaneously starts the propulsion device to control the interceptor plate 34 corresponding to each meter 13 to move down with the connected moving plate 31. The moving plate 31 moves down to cut off the transmission wire 21 and cut off the physical connection between the meter 13 and the information storage 2. At the same time, the sealing blade 341 at the bottom of the interceptor plate 34 is embedded in the sealing groove 331 and cuts off the connecting wires 131 arranged in the limiting groove 332, realizing the physical connection between the meter 13 and the external power grid. The disconnected connecting wires 131 are distributed in different limiting grooves 332, and the disconnected ends are separated from each other to avoid short circuits caused by contact between the disconnected ends.

[0050] The interceptor plate 34 continues to move down until its bottom contacts the support plate 33 at the bottom of the meter 13 and its top contacts the top plate 32 at the top of the meter 13. In this way, the interceptor plate 34, the top plate 32, the support plate 33 and the inner wall of the installation chamber 12 cooperate to form a square box-shaped structure, thereby achieving closed protection for the meter 13.

[0051] In this way, for normal meters 13 that have not overheated and spontaneously combusted, the sealing protection can isolate the high temperature of the external flame from the normal meters 13, thereby preserving the meters 13 as much as possible in an accident and reducing losses. For dangerous meters 13 that are spontaneously combusting, the sealing protection confines the high temperature flames within the sealed area, thereby reducing the threat of the high temperature flames to the surrounding meters 13 and the internal environment of the installation room 12, thus limiting the spread of the fire accident and reducing losses from the power equipment accident. Furthermore, the gas extinguishing system can introduce extinguishing gas into the security chamber 321 through the inflation pipe 36, and then into the sealed area through the evenly arranged security holes 322. In the narrow area enclosed by the interceptor plate 34 and other components around the meters 13, the extinguishing gas accumulates rapidly and the concentration increases, so that an environment unfavorable to the combustion of flames is quickly formed inside the sealed area, further suppressing the spread of the high temperature flames on the meters 13, reducing equipment losses, and reducing the difficulty of fire fighting for rescue personnel.

[0052] Example 3:

[0053] Based on Embodiment 2, the vertical cross section of the movable plate 31 is an L-shaped structure, and the vertical part of the movable plate 31 slides in contact with the inner wall of the safety gap 15 near the storage chamber 14, and the horizontal part of the top of the movable plate 31 slides in contact with the inner wall of the safety gap 15 near the installation chamber 12.

[0054] A transmission tube 22 is provided in the mounting hole inside the safety gap 15 near the information storage 2. The transmission tube 22 is made of rubber with low elasticity to keep the transmission wire 21 in a limited and fixed position. The transmission wire 21 is located inside the transmission tube 22. The end of the transmission tube 22 extends into the safety gap 15, and a cutting groove 221 is provided on the outer surface of the transmission tube 22 at the part corresponding to the cutting blade 311.

[0055] Specific workflow: Based on the specific workflow in Embodiment 2, as the moving plate 31 moves down to the part inside the safety gap 15 corresponding to the meter 13, the top horizontal part of the moving plate 31 and the intercepting plates 34 connected on both sides provide semi-enclosed protection for the back part of the meter 13. In this way, when a high-temperature flame spreads violently on the meter 13 and spreads along the transmission wire 21 and the corresponding mounting hole into the safety gap 15, it will be confined to the semi-enclosed area, preventing it from affecting the corresponding side wall of the storage chamber 14 in the opposite direction. Even if the meter 13 explodes, and the part of the safety gap 15 connected to the meter 13 is damaged due to the explosion, causing the flame and impact to be transmitted to the safety gap 15, the enclosed structure formed by the top horizontal part of the moving plate 31 and the intercepting plates 34 connected on both sides can also limit and protect the flame and impact, preventing it from continuing to spread to the surrounding environment and causing damage to expand.

[0056] Furthermore, the moving plate 31 slides down along the inner wall of the separation zone near the storage chamber 14. When the cutting blade 311 at the bottom of the moving plate 31 hits the cutting groove 221 provided on the outer surface of the protruding end of the transmission tube 22, the transmission tube 22 keeps the transmission wire 21 taut during the cutting process, so as to avoid the transmission wire 21 being deformed due to compression and affect the cutting process, and ensure that the transmission wire 21 is completely cut off.

[0057] The moving plate 31, which then continued to move downwards, also successfully shielded the end of the cut transmission tube 22, so that the end of the cut transmission tube 22 was in the gap between the moving plate 31 and the inner wall of the safety gap 15, preventing the high-temperature flame that might spread to the safety gap 15 from spreading along the end of the cut transmission wire 21 and threatening the information storage device 2 inside the storage chamber 14.

[0058] Example 4:

[0059] Based on Embodiment 3, a water storage chamber 35 is provided in the inner wall of the safety gap 15 near the storage chamber 14. The water storage chamber 35 is connected to the air filling pipe 36 through the atomizing pipe 351. An atomizer and a water pumping device are provided on the atomizing pipe 351. The water pumping device here can be a miniature water pump.

[0060] The edge of the pallet 33 located inside the installation chamber 12 protrudes upward to form a flow limiting part 333. The limiting groove 332 extends into the safety gap 15. The bottom of the safety gap 15 is connected to the inside of the water storage chamber 35 through the recovery pipe 151, and a smoke exhaust fan is installed in the middle of the recovery pipe 151.

[0061] The lower surface of the top plate 32 is uniformly provided with connecting pipes 323. The top of the connecting pipes 323 is connected to the security holes 322, and the bottom of the connecting pipes 323 is connected to the inside of the meter 13. The mounting hole on the back of the meter 13 near the safety gap 15 is a conical structure, and the diameter of the mounting hole is larger than the diameter of the transmission wire 21. The number of security holes 322 is greater than that of the connecting pipes 323. Therefore, only some of the security holes 322 are connected to the connecting pipes 323. The other security holes 322 normally send fire extinguishing gas and water mist into the enclosed area to cool and extinguish the meter 13 from the outside.

[0062] Specific workflow: Based on the specific workflow in Example 3, after the high-temperature flame spreads into the safety gap 15, the water storage chamber 35 is located between the storage chamber 14 and the safety gap 15. The cooling water inside the water storage chamber 35 can absorb the heat transferred in and play a heat insulation protection role for the nearby storage chamber 14, so as to prevent the internal information storage device 2 from being damaged due to high temperature.

[0063] Furthermore, the atomizing tube 351, which is connected to the water supply, draws cooling water from the water storage chamber 35 through a pumping device, and then forms water mist through the atomizer, which is sent into the air filling tube 36. The water mist mixes with the fire extinguishing gas inside the air filling tube 36 and is injected into the closed area surrounded by the intercepting plate 34 to participate in the cooling and fire extinguishing operation of the meter 13. Because the transmission wire 21 and the connecting wire 131 have been physically cut off at the same time as the power is cut off, the meter 13, which is in the surrounded state, is in a completely de-energized state. Moreover, the surrounding intercepting plate 34, top plate 32 and support plate 33 are made of high-temperature resistant insulating non-metallic materials. This allows the water mist to participate in the suppression of the high-temperature flames of the meter 13. At the same time, the insulating and closed environment can also prevent the spread of damage caused by the conductive properties of the water flow.

[0064] As the water mist fills the surrounding area, it comes into contact with the dense smoke and combines with the dust particles to cause them to settle, thus reducing the generation of dense smoke. On the other hand, the direct contact between the water mist and the meter 13 can reduce the temperature of the meter 13, prevent the flame from spreading, and improve the fire extinguishing effect.

[0065] In the event of increased air pressure within the enclosed area due to smoke, extinguishing gas, and water mist, a limiting groove 332 extends into the safety gap 15, connecting the enclosed area with the bottom area of ​​the safety gap 15. When the mixed gas of water mist, smoke, and extinguishing gas fills the enclosed area and flows downwards, it is intercepted by the protruding flow-limiting part 333, allowing it to flow only along the limiting groove 332 into the interior area of ​​the safety gap 15. Within the safety gap 15, the mixed gas is further enclosed by the moving plate 31 and the two side intercepting plates 34, allowing it to flow only downwards along the bottom opening. This restricts the infiltrating mixed gas to the bottom area of ​​the safety gap 15. After passing through the filter screen located above the end opening of the recovery pipe 151, large particles are separated. The mixed gas is then drawn into the water storage chamber 35 by the exhaust fan, where it mixes with cooling water, thus purifying the smoke particles and recovering the water mist. A pressure relief pipe can be installed at the top of the water storage chamber 35 to release some gas when excessive internal pressure is detected, achieving pressure relief balance.

[0066] Furthermore, as the mixture of water mist and extinguishing gas flows into the security chamber 321, some of it can directly enter the meter 13 along the connecting pipe 323, bypassing the outer shell of the meter 13 and directly contacting the high-temperature electronic components inside, thereby cooling the electronic components and improving the fire extinguishing effect. During this process, some of the mixture of water mist and the mixed gas, after filling the meter 13, flows in from the conical opening of the mounting hole corresponding to the transmission wire 21 on the back of the meter 13, and then flows into the safety gap 15. In the bottom area, it is drawn into the water storage chamber 35 by the recovery pipe 151 for recovery. In this way, a continuous mixed gas flow from top to bottom and from inside to outside is formed inside the meter 13, which fully contacts the complex electronic component structure, extinguishing and cooling it while carrying away smoke and heat with the flowing mixed gas, thus improving the cooling efficiency of the meter 13.

[0067] Example 5:

[0068] Based on Embodiment 4, an installation plate 342 is provided at the top of the interceptor plate 34 corresponding to the upper side of the support plate 33. A needle 343 is provided on the lower side of the installation plate 342. The needle 343 is made of a high-hardness non-metallic material, such as special ceramic. The bottom of the needle 343 is slidably embedded into the security cavity 321. The bottom of the needle 343 is located on the upper side of the connecting pipe 323, and the diameter of the needle 343 is smaller than the inner diameter of the connecting pipe 323. The needle 343 is hollow inside to form a tubular structure, and the side wall of the needle 343 is uniformly provided with connecting holes 344.

[0069] Specific workflow: Based on the specific workflow in Example 4, as the interceptor plate 34 moves downward, the mounting plate 342 moves downward, which in turn moves the needle 343 downward to penetrate the security cavity 321 and embed it into the meter 13 along the connecting pipe 323. During the downward insertion of the relatively hard needle 343, it can directly insert into the complex internal electronic component structure, forming a downward passage. On the one hand, this better promotes the downward water mist and fire extinguishing gas to flow directly into the deepest area of ​​the meter 13 along the broken and opened passage, and fully contact the internal electronic component structure to play a role in cooling and extinguishing the fire.

[0070] On the other hand, the tubular needle 343 has some connecting holes 344 that penetrate into the meter 13 as the needle 343 is inserted, while some connecting holes 344 are located in the security cavity 321. This allows the water mist and fire extinguishing gas filling the security cavity 321 to flow into the needle 343 and then down into the meter 13 before flowing back in. This avoids the obstruction of complex electrical components, allowing the water mist to fully contact the electrical components and improving the cooling effect.

[0071] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-security electricity metering box, comprising a box body (1) and a safety component (3), wherein the box body (1) has an opening with a closed door (11), and a meter (13) is installed in the installation chamber (12) inside the box body (1), and the meter (13) is connected to the external power grid system through a connecting wire (131) passing through the side wall of the installation chamber (12); Its features are: The gas extinguishing system in safety component (3) is connected to the interior of installation chamber (12); A storage chamber (14) is provided on the back of the box (1). A safety door is provided at the opening of the storage chamber (14). A safety gap (15) is provided between the storage chamber (14) and the installation chamber (12). An information storage device (2) is provided inside the storage chamber (14). The transmission wire (21) of the information storage device (2) passes through the installation hole provided in the inner wall of the safety gap (15) and is connected to the meter (13). The safety gap (15) is connected to the gas extinguishing system, and a movable plate (31) is vertically slidably installed inside the safety gap (15). The movable plate (31) is connected to the propulsion device at the top of the safety gap (15), and a cutter (311) is installed at the bottom of the movable plate (31). The inner wall of the installation chamber (12) is provided with a top plate (32) located above the meter (13). A horizontally extending support plate (33) is provided at the bottom of the meter (13). The top plate (32) is hollow inside to form a security cavity (321). The security cavity (321) is connected to the gas extinguishing system through an inflation pipe (36). Security holes (322) are evenly provided on the lower surface of the top plate (32). The security holes (322) are connected to the security cavity (321). The inner wall of the installation chamber (12) is provided with a sliding groove (121) on both sides of the meter (13). An intercepting plate (34) is provided on the upper side of the meter (13). The horizontal cross section of the intercepting plate (34) is U-shaped, and the two ends of the intercepting plate (34) slide through the sliding groove (121) and are connected to the moving plate (31).

2. The high-security energy metering box according to claim 1, characterized in that: Limiting grooves (332) are evenly provided on the upper surface of the tray (33), and the connecting wire (131) is embedded into the corresponding limiting groove (332); The bottom of the interceptor plate (34) is provided with a sealing knife (341), and the upper surface of the support plate (33) is provided with a sealing groove (331) corresponding to the sealing knife (341). The sealing groove (331) has a conical cross section. The sealing groove (331) extends perpendicularly to the limiting groove (332) and passes through each limiting groove (332) in sequence.

3. The high-security energy metering box according to claim 2, characterized in that: The vertical section of the movable plate (31) is L-shaped, and the vertical part of the movable plate (31) slides in contact with the inner wall of the safety gap (15) near the storage chamber (14), and the end of the horizontal part of the top of the movable plate (31) slides in contact with the inner wall of the safety gap (15) near the installation chamber (12). The information storage (2) has a transmission tube (22) on its side wall, a transmission wire (21) is located inside the transmission tube (22), the end of the transmission tube (22) extends into the safety gap (15), and a cutting groove (221) is provided on the outer surface of the transmission tube (22) corresponding to the cutting blade (311).

4. The high-security energy metering box according to claim 3, characterized in that: A water storage chamber (35) is provided in the inner wall of the safety gap (15) near the storage chamber (14). The water storage chamber (35) is connected to the air filling pipe (36) through the atomizing pipe (351). An atomizer and a water pumping device are provided on the atomizing pipe (351). The edge of the pallet (33) located inside the installation chamber (12) protrudes upward to form a flow restriction part (333), the limiting groove (332) extends into the safety gap (15), the bottom of the safety gap (15) is connected to the water storage chamber (35) through the recovery pipe (151), and a smoke exhaust fan is installed in the middle of the recovery pipe (151).

5. A high-security energy metering box according to claim 4, characterized in that: A connecting pipe (323) is evenly provided on the lower surface of the top plate (32). The top of the connecting pipe (323) is connected to the security hole (322), and the bottom of the connecting pipe (323) is connected to the inside of the meter (13).

6. A high-security energy metering box according to claim 5, characterized in that: An installation plate (342) is provided on the top of the interceptor plate (34) and the corresponding part on the upper side of the support plate (33). A needle (343) is provided on the lower side of the installation plate (342). The bottom of the needle (343) is slidably embedded into the security cavity (321). The bottom of the needle (343) is located on the upper side of the connecting pipe (323), and the diameter of the needle (343) is smaller than the inner diameter of the connecting pipe (323).

7. A high-security energy metering box according to claim 6, characterized in that: The needle (343) has a hollow interior forming a tubular structure, and the sidewalls of the needle (343) are evenly provided with connecting holes (344).

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