High-safety electric energy metering box

Abstract

The invention belongs to the technical field of electric energy metering, and particularly relates to a high-safety electric energy metering box, which comprises a box body and a safety assembly, and is characterized in that a meter is mounted in a mounting chamber in the box body, penetrates through the side wall of the mounting chamber through a connecting wire, and is connected into an external power grid system; a storage chamber is arranged on the back face of the box body, a safety gap is formed between the storage chamber and the installation chamber, and an information storage device is arranged in the storage chamber and connected with the meter through a transmission wire. When the meter has an overheating spontaneous combustion accident, a mounting chamber where the meter is located and a storage chamber where an information memory is located are physically separated through a safety gap; and the propelling equipment is started to drive the moving plate to move downwards to physically cut off the transmission wire, so that the information memory and the meter are completely separated, high-temperature flames are prevented from spreading along the transmission wire to threaten the information memory, the loss is further reduced, and the information safety is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of electric energy metering, in particular to a high-safety electric energy metering box. Background Art

[0002] An energy meter box is a specialized device used to measure energy consumption. It consists of a housing, metering components, wiring devices, and protective structures. The housing is typically made of metal or flame-retardant plastic, offering corrosion and aging resistance. Some outdoor models also feature sun and rain protection. The internal structure is divided into functional areas, including enclosed metering, wiring, and control areas. The overall design addresses metering accuracy, electrical safety, and tamper resistance.

[0003] Under normal circumstances, the closed box structure on the electricity meter box provides protection for the internal meter and other structures. However, in a hot environment, the power consumption is large, and the continuous operation of the electronic components inside the meter under overload conditions can easily lead to heat accumulation and even short circuit combustion, causing the meter to spontaneously combust or even explode, resulting in electrical fire accidents. The burning flames and abnormal power fluctuations may be transmitted along the connecting wires to the surrounding power equipment, causing the accident losses to expand. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a high-safety electric energy metering box.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a high-safety electric energy meter box, comprising a box body and a safety component, wherein the box body opening is provided with a closed door, and a meter is installed in an installation chamber inside the box body, and the meter is connected to an external power grid system via a connecting wire passing through the side wall of the installation chamber; The gas fire extinguishing system in the safety component is in communication with the interior of the installation chamber; A storage chamber is provided on the back of the box body, 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, and a transmission wire provided in the information storage device passes through a mounting hole provided on the inner wall of the safety gap and is connected to a meter; The safety gap is communicated with the gas fire extinguishing system, and a movable plate is vertically slidably provided inside the safety gap. The movable plate is connected to the propulsion device at the top of the safety gap, and a cutting knife is provided at the bottom of the movable plate.

[0006] Preferably, a top plate is provided on the inner wall of the installation chamber above the meter, and a laterally extending support plate is provided at the bottom of the meter; the top plate is hollow inside to form a security cavity, and the security cavity is connected to the gas fire extinguishing system via an inflation tube; security holes are evenly provided on the lower surface of the top plate, and the security holes are in communication with the security cavity; The inner wall of the installation chamber is provided with a slide groove at the positions on both sides of the meter, and an interception plate is provided on the upper side of the meter. The horizontal cross-section of the interception plate is U-shaped, and the two side ends of the interception plate slide through the slide groove and are connected to the movable plate.

[0007] Preferably, the upper surface of the support plate is evenly provided with limiting grooves, and the connecting wires are embedded in the corresponding limiting grooves; A closing knife is provided at the bottom of the intercepting plate, and a closing groove is provided at a portion of the upper surface of the supporting plate corresponding to the closing knife, and the cross section of the closing groove is conical; the extending direction of the closing groove is perpendicular to the limiting groove, and passes through each limiting groove in sequence.

[0008] Preferably, the vertical cross-section of the movable plate is an L-shaped structure, and the vertical portion of the movable plate is in sliding contact with the inner wall of the safety gap on the side close to the storage chamber, and the end portion of the horizontal portion of the top of the movable plate is in sliding contact with the inner wall of the safety gap on the side close to the installation chamber; A transmission tube is provided on the side wall of the information storage device, a transmission wire is located inside the transmission tube, an 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 a position corresponding to the cutting knife.

[0009] Preferably, a water storage cavity is provided in the inner wall of the safety gap close to the storage chamber, the water storage cavity is communicated with the inflation tube through an atomizing tube, and the atomizing tube is provided with an atomizer and a water pumping device; The edge of the support plate located inside the installation chamber protrudes upward to form a flow limiting portion, and 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 arranged in the middle of the recovery pipe.

[0010] Preferably, connecting pipes are evenly 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.

[0011] Preferably, a mounting plate is provided at the top of the intercepting plate corresponding to the upper side of the support plate, a threading needle is provided on the lower side of the mounting plate, the bottom of the threading needle is slidably embedded in the security cavity, the bottom of the threading needle is located on the upper side of the connecting tube, and the diameter of the threading needle is smaller than the inner diameter of the connecting tube.

[0012] Preferably, the interior of the piercing needle is hollow to form a tubular structure, and the side wall of the piercing needle is evenly provided with connecting holes.

[0013] The beneficial effects of the present invention are as follows: The high-safety electric energy meter box of the present invention provides a physical separation between the installation chamber where the meter is located and the storage chamber where the information storage device is located, through a safety gap, to prevent the spread of high-temperature flames and smoke along the transmission lines when the meter overheats and spontaneously combusts. The propulsion device is activated to drive the movable plate downward to physically cut off the transmission lines, thereby completely isolating the information storage device from the meter and preventing the high-temperature flame from spreading along the transmission lines and threatening the information storage device. Because the safety gap is connected to the gas fire extinguishing system, the fire 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, after the rescue personnel arrive, compared with the installation room where high-temperature flames are concentrated inside the box, they can more easily open the storage room from the safety door on the back of the box, take out the information storage device for transfer, and then start to control the fire, further reducing losses and ensuring information security. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a perspective view of the present invention; Figure 2 It is a schematic diagram of the internal structure of the installation chamber in the present invention; Figure 3 It is a partial cross-sectional view of the present invention in the side view direction; Figure 4 yes Figure 3 A partial enlarged view of point A in the middle; Figure 5 yes Figure 3 A partial enlarged view of point B in the middle; Figure 6 yes Figure 3 A partial enlarged view of point C in the middle; Figure 7 It is a three-dimensional diagram of the intercepting plate and the movable plate in the present invention; Figure 8 It is a stereoscopic view of the intercepting plate and the movable plate in the present invention from another perspective.

[0016] In the figure: box body 1, closed door 11, installation chamber 12, slide 121, meter 13, connecting wire 131, storage chamber 14, safety gap 15, recovery pipe 151, information storage device 2, transmission wire 21, transmission pipe 22, cutting groove 221, safety component 3, movable plate 31, cutting knife 311, top plate 32, security cavity 321, security hole 322, connecting pipe 323, supporting plate 33, closed groove 331, limit groove 332, flow limiting part 333, intercepting plate 34, closed knife 341, installation plate 342, threading needle 343, connecting hole 344, water storage chamber 35, atomizing pipe 351, inflation pipe 36. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings shown in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: As shown in the accompanying drawings Figures 1-8 As shown, a high-security electric energy meter box includes a box body 1 and a safety component 3. The box body 1 is provided with a closed door 11 at its opening. A meter 13 is installed in an installation chamber 12 inside the box body 1. The meter 13 is an electrical instrument commonly used in the prior art for calculating power consumption. The meter 13 is connected to an external power grid system via a connecting wire 131 passing through the side wall of the installation chamber 12. The safety component 3 includes monitoring sensors provided on the meter 13, including temperature and humidity sensors, smoke sensors, and current and voltage sensors. The safety component 3 also includes an external gas fire extinguishing system, which can be an existing carbon dioxide fire extinguishing system. The gas fire extinguishing system is in communication with the interior of the installation room 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. A transmission wire 21 provided in the information storage device 2 passes through a mounting hole provided on the inner wall of the safety gap 15 and is connected to the meter 13. The safety gap 15 is also connected to the gas fire extinguishing system, and a movable plate 31 is provided inside the safety gap 15 for vertical sliding. 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 starting, it pushes the movable plate 31 to move vertically. A cutting knife 311 is provided at the bottom of the movable plate 31. The cutting knife 311 can be made of non-metallic materials such as ceramics.

[0019] Specific work flow: During the installation process, the electric energy meter box is generally installed in a location where electric power equipment is concentrated, and is used to calculate the electric energy consumption of the corresponding user. Specifically, the meter 13 inside the box body 1 is connected to the power grid system through the connecting wire 131, and the electric energy consumption of 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 device 2 through the transmission wire 21 for storage, and the information is kept synchronized in real time. Under normal circumstances, the closed box 1 protects the internal structure such as the meter 13. However, in a hot environment, the power consumption is high. The continuous operation of the electronic components inside the meter 13 under overload conditions can easily lead to heat accumulation and even short circuit combustion, causing the meter 13 to spontaneously combust or even explode, resulting in an electrical fire accident. The burning flames and abnormal power fluctuations may be transmitted along the connecting wires 131 to the surrounding power equipment, causing further damage to the accident. Therefore, the present application sets up a safety component 3, and a monitoring sensor is set inside the meter 13 to monitor the load and temperature conditions inside the meter 13. When an abnormality occurs, an alarm can be issued, which is convenient for maintenance personnel to control the power network to appropriately reduce the load or even shut down and cool down, and to carry out regular maintenance and replace aging components therein; when the meter 13 spontaneously combusts due to high temperature due to untimely maintenance, the smoke alarm located inside the box 1 starts to alarm, and the controller promptly cuts off the electrical connection between the connecting wire 131 and the external power grid to cut off the power to the meter 13; at the same time, the gas fire extinguishing system is started to fill the fire extinguishing gas into the meter 13, so that the fire extinguishing gas fills the internal area, isolates oxygen, destroys the combustion conditions of the meter 13, prevents the spread of the spontaneous combustion flame of the meter 13, and extinguishes the fire, or buys time for the arrival of rescue personnel when the fire is more serious; In order to ensure the safety of the energy consumption related data stored in the meter 13, after the fire is under control, the information storage element inside the meter 13 is generally rescued as soon as possible, and the information data recorded therein is restored to reduce losses. At the same time, it can also provide information support for the subsequent analysis of the cause of the accident. In the case where the information cannot be rescued, the present application provides an information storage device 2 for information backup. Through a wired connection with the transmission wire 21, information backup can be performed in real time during the operation of the meter 13. The information includes user energy consumption data and working environment data collected by the monitoring sensor, which can be stored in real time in the information storage device 2. In order to ensure the safety of the information storage 2, it is installed in the storage chamber 14 on the back of the box 1 so that they are not in direct contact, and the data connection between the two is achieved only through the transmission wire 21 across the safety gap 15; when the meter 13 overheats and spontaneously combusts, in order to prevent the high-temperature flame and smoke from spreading along the transmission wire 21, the installation chamber 12 where the meter 13 is located and the storage chamber 14 where the information storage 2 is located are physically separated by a safety gap 15, and after the data transmission state of the transmission wire 21 is cut off, the propulsion device is started to drive the movable plate 31 to move downward, and the transmission wire is cut off by the cutting knife 311 at the bottom of the movable plate 31. 21 is physically cut off, thereby completely isolating the information storage device 2 and the meter 13, and preventing the high-temperature flame from spreading along the transmission wire 21 and threatening the information storage device 2; and because the safety gap 15 is connected to the gas fire extinguishing system, the fire extinguishing gas can directly fill the safety gap 15, further isolating the spread of the high-temperature flame and ensuring the safety of the information storage device 2; in this way, after the rescue personnel arrive, compared with the installation room 12 where the high-temperature flame is concentrated inside the box 1, it is easier to open the storage room 14 from the safety door on the back of the box 1, take out the information storage device 2 for transfer, and then start to control the fire, further reducing losses and ensuring information security.

[0020] Example 2: Based on the first embodiment, a top plate 32 is provided on the inner wall of the installation chamber 12 above the meter 13, and a laterally 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, which is connected to the gas fire extinguishing system via an inflation tube 36. Security holes 322 are evenly distributed on the lower surface of the top plate 32, and the security holes 322 are in communication with the security cavity 321. Slide grooves 121 are provided on the inner wall of the installation chamber 12 at both sides of the meter 13. An interception plate 34 is provided on the upper side of the meter 13. The horizontal cross-section of the interception plate 34 is U-shaped, and the ends of the interception plate 34 slide through the slide grooves 121 and connect to the movable plate 31. Limiting grooves 332 are evenly provided on the upper surface of the support plate 33. The connecting wires 131 are embedded in 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. A closing knife 341 is provided at the bottom of the intercepting plate 34, and a closing groove 331 is provided on the upper surface of the supporting plate 33 at a position corresponding to the closing knife 341. The cross section of the closing groove 331 is conical. The extending direction of the closing groove 331 is perpendicular to the limiting groove 332 and passes through each limiting groove 332 in sequence. Specific workflow: Based on the specific workflow in Example 1, since several meters 13 are usually installed inside the box 1, assigned to different user groups and evenly arranged in the installation room 12 inside the box 1, when an accident occurs to an individual meter 13, it is easy for the fire to spread to the surrounding meters 13 because they are too close, thereby causing the loss to expand; In view of this, the present application sets an interception plate 34. When the monitoring sensor monitors the presence of high-temperature smoke in the installation chamber 12 inside the box body 1, while issuing an alarm signal, the propulsion device is started to control the interception plates 34 corresponding to each meter 13 to move downward along with the connected movable plate 31. The movable plate 31 moves downward to cut off the transmission wire 21, and at the same time, cuts off the physical connection between the meter 13 and the information storage device 2. At the same time, the closing knife 341 at the bottom of the interception plate 34 is embedded in the closing groove 331, cutting off the connecting wire 131 arranged in the limiting groove 332, thereby 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 circuit caused by contact of the disconnected ends; The intercepting plate 34 continues to move downward until its bottom contacts the supporting 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 intercepting plate 34, the top plate 32, the supporting plate 33 and the inner wall of the installation chamber 12 cooperate to form a square box-like structure, thereby achieving closed protection for the meter 13. In this way, for normal meters 13 that have not experienced overheating and spontaneous combustion, the closed protection can isolate the impact of high temperature of external flames on the normal meters 13, thereby preserving the meters 13 in accidents as much as possible and reducing losses; for dangerous meters 13 that have spontaneously combusted, the closed protection allows the high-temperature flames that appear therein to be confined to the inside of the closed area, thereby reducing the threat of high-temperature flames to the surrounding meters 13 and the internal environment of the installation room 12, thereby limiting the expansion of fire accidents and reducing losses from power equipment accidents; and the gas fire extinguishing system can introduce the fire extinguishing gas into the security cavity 321 through the inflation pipe 36, and then enter the closed area through the evenly arranged security holes 322. The fire extinguishing gas accumulates rapidly and the concentration increases in the narrow area surrounded by the interception plates 34 and the like around the meter 13, so that an environment that is not conducive to flame combustion is quickly formed inside the closed area, and further suppresses the spread of the high-temperature flame on the meter 13, reducing equipment losses and reducing the difficulty of fire extinguishing for rescue personnel.

[0021] Example 3: Based on the second embodiment, the vertical cross-section of the movable plate 31 is an L-shaped structure, and the vertical portion of the movable plate 31 is in sliding contact with the inner wall of the safety gap 15 on the side close to the storage chamber 14, and the horizontal end portion of the top of the movable plate 31 is in sliding contact with the inner wall of the safety gap 15 on the side close to the installation chamber 12; A transmission tube 22 is provided in the mounting hole on the side of the safety gap 15 near the information storage device 2. The transmission tube 22 is made of a relatively low-elastic rubber material to maintain the position of the transmission wire 21. The transmission wire 21 is located inside the transmission tube 22. The end of the transmission tube 22 extends into the safety gap 15. A cutting groove 221 is provided on the outer surface of the transmission tube 22 at a position corresponding to the cutting blade 311. Specific working process: Based on the specific working process in Example 2, as the movable plate 31 moves down to the position corresponding to the meter 13 inside the safety gap 15, the top horizontal portion of the movable plate 31 and the interception plates 34 connected on both sides semi-enclose the back portion of the meter 13 for protection. In this way, when a high-temperature flame on the meter 13 spreads violently and spreads along the transmission wire 21 and the corresponding mounting hole to the corresponding portion inside the safety gap 15, it will be confined to the semi-enclosed area, preventing it from affecting the corresponding side wall portion of the storage chamber 14 in the opposite direction. Even if the meter 13 explodes and the portion where the side wall of the safety gap 15 and the meter 13 are connected is damaged by the explosion, causing the flame and impact to be transmitted to the safety gap 15, the enclosing structure formed by the top horizontal portion of the movable plate 31 and the interception plates 34 connected on both sides can also limit and protect the flame and impact, preventing them from continuing to transmit to the surrounding environment and causing further damage. Furthermore, the movable plate 31 slides downward along the inner wall of the separation area near the storage chamber 14. When the cutting blade 311 at the bottom of the movable 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 straight during the cutting process, preventing the transmission wire 21 from being squeezed and deformed and affecting the cutting process, thereby ensuring that the transmission wire 21 is completely cut. The movable plate 31 that then continues to move downward also successfully covers the end of the cut transmission tube 22, so that the end of the cut transmission tube 22 is located in the gap between the movable plate 31 and the inner wall of the safety gap 15, preventing the high-temperature flame that may 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.

[0022] Example 4: Based on the third embodiment, 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 inflation tube 36 through the atomizing tube 351. The atomizing tube 351 is provided with an atomizer and a water pumping device. The water pumping device here can be a micro water pump device. The edge of the support plate 33 located inside the installation chamber 12 is raised upward to form a flow limiting portion 333. The limiting groove 332 extends into the safety gap 15. The bottom of the safety gap 15 is connected to the interior of the water storage chamber 35 through the recovery pipe 151. A smoke exhaust fan is installed in the middle of the recovery pipe 151. Connecting pipes 323 are evenly arranged 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; the mounting hole arranged on the back side 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 the connecting pipe 323, so only some of the security holes 322 are connected to the connecting pipe 323, and the other security holes 322 normally send fire extinguishing gas and water mist into the surrounded area to cool and extinguish the meter 13 from the outside.

[0023] Specific work flow: Based on the specific work flow of Example 3, after the high-temperature flame spreads to the interior of 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 transferred heat and provide thermal insulation protection for the interior of the adjacent storage chamber 14, thereby preventing the internal information storage 2 from being damaged by the high temperature. The connected atomizing pipe 351 draws the cooling water from the water storage chamber 35 through the pumping device, and then forms water mist through the atomizer and sends it to the inflation pipe 36, where it mixes with the fire extinguishing gas inside the inflation pipe 36 and is injected into the closed area surrounded by the interception plate 34, thereby participating in the cooling and fire extinguishing operation of the meter 13. Because the transmission wire 21 and the connecting wire 131 are physically cut off at the same time as the power is cut off, the meter 13 in the surrounded state is in a completely power-off state at this time, and the surrounding interception plates 34, top plate 32 and support plate 33 are made of high-temperature resistant insulating non-metallic materials, so that the water mist can participate in suppressing the high-temperature flame of the meter 13. At the same time, the insulated and closed environment can also avoid the expansion of the harm caused by the conductive characteristics of the formed water flow. When the water mist fills the surrounding area, on the one hand, it comes into contact with the intense smoke, combines with the dust particles in it and causes them to settle, thereby reducing the generation of smoke. On the other hand, the direct contact of the water mist with the meter 13 can reduce the temperature of the meter 13, prevent the flame from expanding, and improve the fire extinguishing effect. In the case where the air pressure in the enclosed area increases due to the generated smoke and the inflow of fire extinguishing gas and water mist, a limiting groove 332 is provided to extend into the interior of the safety gap 15, so as to realize the communication between the enclosed area and the bottom area of ​​the safety gap 15. In this way, when the mixed gas formed by the water mist, smoke and fire extinguishing gas fills the enclosed area and flows downward, it is intercepted by the raised flow limiting portion 333 and can only flow into the internal area of ​​the safety gap 15 along the limiting groove 332; in the safety gap 15, the mixed gas is surrounded by the movable plate 31 and the intercepting plates 34 on both sides and can only flow downward along the bottom opening, so that the infiltrated mixed gas is restricted to the bottom area of ​​the safety gap 15, passes through the filter provided on the upper side of the end opening of the recovery pipe 151, and the large particles of impurities therein are separated. Then, the mixed gas is drawn into the water storage chamber 35 under the action of the smoke exhaust fan, mixed with cooling water, thereby purifying the smoke particulate impurities in the mixed gas and recovering the water mist therein; a pressure relief pipe can be provided at the top of the water storage chamber 35, and when it is detected that the internal air pressure is too high, part of the gas is discharged to achieve pressure relief balance; Furthermore, while the mixed gas formed by water mist and fire extinguishing gas flows into the interior of the security cavity 321, part of it can directly enter the interior of the meter 13 along the connecting pipe 323, bypass the outer shell of the meter 13 and directly contact the high-temperature electronic components inside, thereby cooling the electronic components and improving the fire extinguishing effect; in this process, after the mixed gas formed by part of the water mist and the mixed gas fills the meter 13, it flows into 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, and is drawn into the water storage cavity 35 by the recovery pipe 151 in the bottom area for recovery; in this way, a continuous mixed gas flushing from top to bottom and from inside to outside is formed inside the meter 13, which fully contacts the complex electronic component structure therein, extinguishes the fire and cools it down, and takes away the smoke and heat with the outflowing mixed gas, thereby improving the cooling efficiency of the meter 13.

[0024] Embodiment 5: On the basis of the fourth embodiment, a mounting plate 342 is provided at the top of the intercepting plate 34 corresponding to the upper side of the supporting plate 33, and a piercing needle 343 is provided on the lower side of the mounting plate 342. The piercing needle 343 is made of a high-hardness non-metallic material, such as special ceramics; the bottom of the piercing needle 343 is slidably embedded in the security cavity 321, the bottom of the piercing needle 343 is located on the upper side of the connecting tube 323, and the diameter of the piercing needle 343 is smaller than the inner diameter of the connecting tube 323; the interior of the piercing needle 343 is hollow to form a tubular structure, and the side wall of the piercing needle 343 is evenly provided with connecting holes 344; Specific workflow: Based on the specific workflow in Example 4, as the interception plate 34 moves downward, the mounting plate 342 moves downward, which in turn drives the piercing needle 343 downward to penetrate the security cavity 321 and be embedded into the interior of the meter 13 along the connecting pipe 323. During the downward penetration of the piercing needle 343, which has a relatively high hardness, it can directly penetrate the complex internal electronic component structure, forming a downward passage. On the one hand, it better promotes the downward water mist and fire extinguishing gas to flow directly into the deepest area of ​​the meter 13 along the passage opened by the destruction, fully contacting the internal electronic component structure, and playing a cooling and fire extinguishing role. On the other hand, the tubular structure of the piercing needle 343, part of the connecting hole 344 penetrates into the meter 13 as the piercing needle 343 is inserted, and part of the connecting hole 344 is in the security cavity 321, so that the water mist and fire extinguishing gas filled in the security cavity 321 flow into the piercing needle 343 and go down along the piercing needle 343 to the meter 13 and then flow in, so as to avoid the interception and obstruction of complex electrical components, so that the water mist can fully contact with the electrical components and improve the cooling effect.

[0025] 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-safety electric energy meter box, comprising a box body (1) and a safety component (3), wherein the box body (1) is provided with a closed door (11) at its opening, a meter (13) is installed in an installation chamber (12) inside the box body (1), and the meter (13) is connected to an external power grid system via a connecting wire (131) passing through a side wall of the installation chamber (12); Its characteristics are: The gas fire extinguishing system in the safety component (3) is in communication with the interior of the 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 (2) is provided inside the storage chamber (14), and a transmission wire (21) provided in the information storage (2) passes through a mounting hole provided on the inner wall of the safety gap (15) and is connected to a meter (13); The safety gap (15) is communicated with a gas fire extinguishing system, and a movable plate (31) is vertically slidably provided inside the safety gap (15), the movable plate (31) is connected to a propulsion device at the top of the safety gap (15), and a cutting knife (311) is provided at the bottom of the movable plate (31).

2. A high-security electric energy meter box according to claim 1, characterized in that: A top plate (32) is provided on the inner wall of the installation chamber (12) at a position above the meter (13), and a laterally 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), and the security cavity (321) is connected to the gas fire extinguishing system via an inflation tube (36); security holes (322) are evenly provided on the lower surface of the top plate (32), and the security holes (322) are in communication with the security cavity (321); The inner wall of the installation chamber (12) is provided with a chute (121) at the positions on both sides of the meter (13), and an interception plate (34) is provided on the upper side of the meter (13). The horizontal cross-section of the interception plate (34) is U-shaped, and the ends on both sides of the interception plate (34) slide through the chute (121) and are connected to the movable plate (31).

3. A high-safety electric energy meter box according to claim 2, characterized in that: Limiting grooves (332) are evenly arranged on the upper surface of the supporting plate (33), and the connecting wires (131) are embedded in the corresponding limiting grooves (332); A closing knife (341) is provided at the bottom of the intercepting plate (34), and a closing groove (331) is provided at a portion of the upper surface of the supporting plate (33) corresponding to the closing knife (341), wherein the cross section of the closing groove (331) is conical; the extending direction of the closing groove (331) is perpendicular to the limiting groove (332), and passes through each limiting groove (332) in sequence.

4. A high-security electric energy meter box according to claim 3, characterized in that: The vertical cross-section of the movable plate (31) is an L-shaped structure, and the vertical portion of the movable plate (31) is in sliding contact with the inner wall of the safety gap (15) on the side close to the storage chamber (14), and the end portion of the horizontal portion of the top of the movable plate (31) is in sliding contact with the inner wall of the safety gap (15) on the side close to the installation chamber (12); A transmission tube (22) is provided on the side wall of the information storage device (2), a transmission wire (21) is located inside the transmission tube (22), an 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 a position corresponding to the cutting knife (311).

5. The high-security electric energy meter box according to claim 4, characterized in that: A water storage chamber (35) is provided in the inner wall of the safety gap (15) on one side close to the storage chamber (14), and the water storage chamber (35) is communicated with the inflation pipe (36) through an atomizing pipe (351), and an atomizer and a water pumping device are provided on the atomizing pipe (351); The edge of the support plate (33) located inside the installation chamber (12) is raised upward to form a flow limiting portion (333), and the limiting groove (332) extends into the interior of the safety gap (15). The bottom of the safety gap (15) is communicated with the interior of the water storage chamber (35) through a recovery pipe (151), and a smoke exhaust fan is provided in the middle of the recovery pipe (151).

6. The high-security electric energy meter box according to claim 5, characterized in that: The lower surface of the top plate (32) is evenly provided with connecting pipes (323), the top of the connecting pipe (323) is communicated with the security hole (322), and the bottom of the connecting pipe (323) is communicated with the inside of the meter (13).

7. The high-safety electric energy meter box according to claim 6, characterized in that: A mounting plate (342) is provided at the top of the intercepting plate (34) corresponding to the upper side of the supporting plate (33), and a threading needle (343) is provided at the lower side of the mounting plate (342). The bottom of the threading needle (343) is slidably embedded in the interior of the security cavity (321), and the bottom of the threading needle (343) is located on the upper side of the connecting tube (323), and the diameter of the threading needle (343) is smaller than the inner diameter of the connecting tube (323).

8. The high-security electric energy meter box according to claim 7, characterized in that: The interior of the threading needle (343) is hollow to form a tubular structure, and the side wall of the threading needle (343) is evenly provided with connecting holes (344).

Images