An electric energy metering box with a protection structure

Abstract

The present invention provides an electric energy metering box with a protection structure, which relates to the technical field of electric energy metering boxes and includes a metering box body. A protection mechanism for facilitating pressure relief and explosion prevention of the metering box body is provided on the metering box body. A fire extinguishing mechanism for assisting the metering box body to extinguish fires is provided on the metering box body. The protection mechanism includes an explosion vent panel and an L-shaped baffle. The fire extinguishing mechanism includes a nozzle cover, an L-shaped baffle, a relay, a fire extinguishing agent storage tank, and two connecting conduits. Two pressure relief grooves are opened at the upper end of the metering box body, and the number of explosion vent panels is two. By setting the pressure sensor, relay, and fire extinguishing agent storage tank in cooperation, after an explosion occurs in the metering box body and the explosion vent panel is burst open, the pressure sensor is applied with pressure by the explosion vent panel, so that the fire extinguishing agent storage tank can be opened in time to carry out fire extinguishing work inside the metering box body, avoiding more serious accidents caused by the spread of fire.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric energy metering boxes, and more specifically, particularly relates to an electric energy metering box with a protection structure. Background Art

[0002] An electric energy metering box is an electrical device used for metering, monitoring, and managing electric energy. It is usually installed in a power system to measure and record parameters such as the amount of electric energy consumed by users or specific circuits, and has the function of monitoring the operating state of the circuit, and can real-time monitor whether parameters such as voltage and current are within the normal range. When abnormal situations such as overvoltage, undervoltage, and overcurrent occur, it can send out alarm signals in a timely manner.

[0003] Chinese Patent Publication No.: CN119253433A, an electric energy metering box with a protection structure. In this invention, a roller with evenly arranged convex points is set on the surface of the filter screen. By the roller rolling on the filter screen, the dust accumulated on the surface of the filter screen is cleaned. By the convex points inserting into the mesh holes of the filter screen, the dust in the mesh holes can be extruded out of the mesh holes, realizing the rapid cleaning of the blocked mesh holes.

[0004] The existing electric energy metering boxes have the following disadvantages when in use:

[0005] When the existing electric energy metering box explodes, a pressure relief panel and a pressure relief channel are set. However, between the existing pressure relief panel and the pressure relief channel, they are fixed by nylon screws. It may, due to reasons such as uneven tightening degree of the screws, result in a gap between the pressure relief panel and the installation part, affecting the sealing performance. And after the pressure relief panel fixed by nylon screws is blown open, it usually needs to be reinstalled and fixed manually, and may not be able to restore the protection function in time in an emergency situation;

[0006] The existing electric energy metering box realizes pressure relief and explosion protection through the pressure relief channel, avoiding more serious accidents caused by the overall explosion of the box body. However, after the pressure relief, it cannot carry out fire extinguishing work in time, and still needs to be discovered manually and then take out the fire extinguishing equipment for fire extinguishing. If there is no fire extinguishing equipment nearby, it still needs to wait for the rescue team to extinguish the fire, resulting in a certain lag in fire extinguishing, and may cause secondary explosion and other accidents due to the fire.

[0007] In view of this, research and improvement are carried out on the existing structure and deficiencies, and an electric energy metering box with a protection structure is provided, in order to achieve a more practical value purpose. Summary of the Invention

[0008] In order to solve the above technical problems, the present invention provides an electric energy metering box with a protection structure to solve the above problems.

[0009] An electric energy metering box with a protection structure, comprising a metering box body, a protection mechanism for facilitating pressure relief and explosion protection of the metering box body is provided on the metering box body, a fire extinguishing mechanism for assisting the metering box body to extinguish fire is provided on the metering box body, the protection mechanism includes an explosion-proof plate and an L-shaped baffle, the fire extinguishing mechanism includes a nozzle cover, an L-shaped baffle, a relay, a fire extinguishing agent storage tank and two connecting conduits, two pressure relief grooves are opened at the upper end of the metering box body, the number of explosion-proof plates is two, and the two explosion-proof plates are respectively located on the inner side walls of the pressure relief grooves, the number of nozzle covers is two, and the two nozzle covers are respectively located at both ends of the inner side wall of the metering box body, the L-shaped baffle is fixedly installed at the upper end of the metering box body, a fixing groove is penetrated and opened at the upper end of the L-shaped baffle, the relay is fixedly installed on the inner side wall of the fixing groove, the fire extinguishing agent storage tank is fixedly installed at the upper end of the L-shaped baffle, installation round grooves are penetrated and opened at both ends of the metering box body, T-shaped sliding grooves are opened at both ends of the inner side wall of the metering box body, two magnetic attraction strips are fixedly installed at the upper end of the metering box body, and the two magnetic attraction strips are respectively located at the side ends of the pressure relief grooves, a movable shaft is rotatably installed through the side end of the upper section of the metering box body, the two explosion-proof plates are fixedly installed at the circumferential ends of the movable shaft, L-shaped metal plates are fixedly installed at the upper ends of the two explosion-proof plates, and the two L-shaped metal plates are respectively adsorbed to the magnetic attraction strips, side rods are fixedly installed at the side ends of the two nozzle covers, T-shaped sliders are fixedly installed at the upper ends of the two side rods, the two T-shaped sliders are respectively slidably installed on the inner side walls of the two T-shaped sliding grooves, steel wires are fixedly installed at the upper ends of the two T-shaped sliders, and the ends of the two steel wires are fixedly installed at the lower ends of the explosion-proof plates, a pressure sensor is fixedly installed at the lower end of the relay, and a wire-passing round groove is penetrated and opened at the side end of the L-shaped baffle.

[0010] Preferably, a suction pump is fixedly installed at the side end of the fire extinguishing agent storage tank, a flow divider is fixedly installed at the side end of the suction pump, a connecting wire is fixedly installed between the pressure sensor and the suction pump, and the connecting wire is located on the inner side wall of the wire-passing round groove.

[0011] Preferably, the two connecting conduits are fixedly installed on the flow divider, fire extinguishing nozzles are fixedly installed at the ends of the two connecting conduits, and the two fire extinguishing nozzles are respectively fixedly installed on the inner side walls of the installation round grooves.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, by providing a T-shaped chute and a magnetic strip in cooperation, the existing explosion vent panel and the metering box body are fixed by nylon screws, which has problems such as poor sealing and inconvenient reset. When the L-shaped metal plate in this device adsorbs on the magnetic strip, it can provide a relatively uniform pressure on the entire contact surface, making the sealing effect between the explosion vent panel and the installation part better. After the explosion pressure disappears, the explosion vent panel can continue to adsorb on the magnetic strip under the action of magnetic force and continue to play a protective role, and can be used repeatedly for many times.

[0014] In the present invention, by providing a nozzle cap and a steel wire rope in cooperation, when the two connecting ducts are not in daily use, the two connecting ducts are covered by the two nozzle caps to achieve protection, avoiding scratching and impact on the nozzles, connecting parts, etc. of the connecting ducts, preventing damage such as deformation and rupture, and avoiding that sundries may enter the interior of the connecting ducts and block the nozzles of the connecting ducts, ensuring that the fire extinguishing agent can be ejected in time when a fire occurs.

[0015] In the present invention, by providing an L-shaped baffle and a relay in cooperation, the L-shaped baffle and the relay are located above the two explosion vent panels. When an explosion occurs in the metering box body and the explosion vent panel vents and opens, it can play a certain blocking role on the explosion vent panel, avoiding that the explosion vent panel may fly out at a high speed and splash around, which may cause damage to surrounding pedestrians or objects. The L-shaped baffle can limit the explosion vent panel within a certain range and reduce the possibility of its collision with other objects, thereby reducing the risk of secondary injury.

[0016] In the present invention, by providing a pressure sensor, a relay and a fire extinguishing agent storage tank in cooperation, after an explosion occurs in the metering box body and the explosion vent panel is burst open, the pressure sensor is applied with pressure through the explosion vent panel, so that the fire extinguishing agent storage tank can be opened in time to carry out fire extinguishing work inside the metering box body, avoiding the spread of fire and causing more serious accidents. Through the cooperation of the pressure sensor, the relay and the suction pump, its response is timely, and the pressure sensor can set a pressure threshold, which can effectively avoid the misoperation of the equipment caused by accidental touch, and it can achieve effective fire extinguishing protection for the metering box body.

[0017] In the present invention, the relay, the pressure sensor and the suction pump are all arranged on the outside of the metering box body. Even when a fire and explosion occur inside the metering box body, these main components such as the relay, the pressure sensor and the suction pump are not in the high-temperature open fire area, which ensures that they can operate quickly when the metering box body needs fire extinguishing protection and are not affected by the high-temperature open fire inside the metering box body, ensuring its protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the metering box body of the present invention;

[0019] Figure 2 is a schematic structural diagram of the fire extinguishing agent storage tank of the present invention;

[0020] Figure 3 is the structural explosion diagram of the fire extinguishing agent storage tank of the present invention;

[0021] Figure 4 is the structural diagram of the explosion relief panel of the present invention;

[0022] Figure 5 is the structural explosion diagram of the explosion relief panel of the present invention;

[0023] Figure 6 is the structural diagram of the nozzle cover of the present invention;

[0024] Figure 7 is the structural diagram of the steel wire rope of the present invention;

[0025] Figure 8 is the structural explosion diagram of the L-shaped baffle of the present invention.

[0026] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows: 1, metering box body; 11, installation round groove; 12, T-shaped sliding groove; 13, pressure relief groove; 14, magnetic attraction strip; 2, explosion relief panel; 21, L-shaped metal plate; 22, movable shaft; 3, nozzle cover; 31, side rod; 32, T-shaped slider; 33, steel wire rope; 4, L-shaped baffle; 41, fixing groove; 42, wire passing round groove; 5, relay; 51, pressure sensor; 6, fire extinguishing agent storage tank; 61, suction pump; 62, diverter; 63, connecting wire; 7, connecting conduit; 71, fire extinguishing nozzle. Detailed implementation manners

[0027] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] Please refer to Figures 1 - 8 , the present invention provides an electric energy metering box with a protection structure, including a metering box body 1, a protection mechanism for facilitating pressure relief and explosion protection of the metering box body 1 is provided on the metering box body 1, and a fire extinguishing mechanism for assisting the metering box body 1 to extinguish fires is provided on the metering box body 1. During the long-term use of the metering box body 1, there may be problems such as aging of the circuit, insulation damage, total power exceeding the rated capacity, or during thunderstorm weather, which may cause the electrical components inside the metering box body 1 to rapidly heat up, thereby causing fires and explosions. When an explosion occurs, the impact force can be relieved from the pressure relief groove 13, and the internal high-temperature, high-pressure gas and flames can be discharged to a safe area in time;

[0029] The protection mechanism includes an explosion relief plate 2 and an L-shaped baffle 4. The fire extinguishing mechanism includes a nozzle cover 3, an L-shaped baffle 4, a relay 5, a fire extinguishing agent storage tank 6, and two connecting conduits 7. Two pressure relief grooves 13 are provided at the upper end of the metering box body 1. The number of explosion relief plates 2 is two, and the two explosion relief plates 2 are respectively located on the inner side walls of the pressure relief grooves 13. The number of nozzle covers 3 is two, and the two nozzle covers 3 are respectively located at both end parts on the inner side walls of the metering box body 1. The L-shaped baffle 4 is fixedly installed at the upper end of the metering box body 1. A fixing groove 41 is provided through the upper end of the L-shaped baffle 4. The relay 5 is fixedly installed on the inner side wall of the fixing groove 41. The fire extinguishing agent storage tank 6 is fixedly installed at the upper end of the L-shaped baffle 4. Installation circular grooves 11 are respectively provided through both end parts of the metering box body 1. T-shaped sliding grooves 12 are respectively provided at both end parts on the inner side wall of the metering box body 1. Two magnetic attraction strips 14 are fixedly installed at the upper end of the metering box body 1, and the two magnetic attraction strips 14 are respectively located at the side end parts of the pressure relief grooves 13. A movable shaft 22 is rotatably installed through the side end part of the upper section of the metering box body 1. The two explosion relief plates 2 are fixedly installed on the circumferential end parts of the movable shaft 22. L-shaped metal plates 21 are fixedly installed at the upper end parts of the two explosion relief plates 2, and the two L-shaped metal plates 21 are respectively adsorbed to the magnetic attraction strips 14. When an explosion occurs inside the metering box body 1, the high-pressure gas generated will impact the two explosion relief plates 2. The two explosion relief plates 2 will rotate around the movable shaft 22 under the impact. When the two explosion relief plates 2 rotate, they will drive the two L-shaped metal plates 21 to rotate. At this time, the two L-shaped metal plates 21 are no longer adsorbed to the magnetic attraction strips 14. After the explosion relief plates 2 rotate and open, the high-temperature, high-pressure gas and flames inside the metering box body 1 will be discharged upward to achieve pressure relief;

[0030] Side rods 31 are fixedly installed at the side end parts of the two nozzle covers 3. T-shaped sliders 32 are fixedly installed at the upper end parts of the two side rods 31. The two T-shaped sliders 32 are respectively slidably installed on the inner side walls of the two T-shaped sliding grooves 12. Steel wire ropes 33 are fixedly installed at the upper end parts of the two T-shaped sliders 32. The end parts of the two steel wire ropes 33 are fixedly installed at the lower end parts of the explosion relief plates 2. When the two explosion relief plates 2 are impacted and rotate upward, they will drive the two steel wire ropes 33 to move upward. The two steel wire ropes 33 moving upward will drive the two T-shaped sliders 32 to move upward in the two T-shaped sliding grooves 12. The movement of the two T-shaped sliders 32 will drive the nozzle covers 3 to move upward. At this time, the end parts of the two fire extinguishing nozzles 71 are no longer blocked, facilitating the subsequent fire extinguishing work of the fire extinguishing nozzles 71 inside the metering box body 1;

[0031] A pressure sensor 51 is fixedly installed at the lower end of the relay 5. A wire-passing circular groove 42 is formed through the side end of the L-shaped baffle 4. A suction pump 61 is fixedly installed at the side end of the fire extinguishing agent storage tank 6. A diverter 62 is fixedly installed at the side end of the suction pump 61. A connecting wire 63 is fixedly installed between the pressure sensor 51 and the suction pump 61. The connecting wire 63 is located on the inner side wall of the wire-passing circular groove 42. Two connecting conduits 7 are both fixedly installed on the diverter 62. Fire extinguishing nozzles 71 are fixedly installed at the ends of the two connecting conduits 7. The two fire extinguishing nozzles 71 are respectively fixedly installed on the inner side wall of the installation circular groove 11. When the explosion-proof plate 2 is impacted and opened, the rotation of the explosion-proof plate 2 will contact the pressure sensor 51. Because there is a certain impact force on the explosion-proof plate 2 at this time, when the explosion-proof plate 2 rotates and contacts the pressure sensor 51, it will generate a force on the pressure sensor 51. The user can set the threshold value for the pressure range detected by the pressure sensor 51. After the impact pressure of the explosion-proof plate 2 on the pressure sensor 51 reaches the corresponding threshold value, the pressure sensor 51 can identify that the explosion-proof plate 2 is in the open explosion-proof state at this time. The pressure sensor 51 transmits a signal to the relay 5, and the relay 5 starts the suction pump 61 through the connecting wire 63. At this time, the suction pump 61 will suck the fire extinguishing agent in the fire extinguishing agent storage tank 6 into the two connecting conduits 7. Finally, the fire extinguishing agent will be sprayed out from the fire extinguishing nozzles 71 at the ends of the connecting conduits 7 to extinguish the flames on the inner wall of the metering box body 1 and avoid more serious accidents.

[0032] Working principle:

[0033] First step, during the long-term use of the metering box body 1, there may be problems such as aging of the circuit, insulation damage, total power exceeding the rated capacity, or during thunderstorm weather, which may cause the electrical components inside the metering box body 1 to heat up rapidly, thereby causing fire and explosion. When an explosion occurs, the impact force can be relieved through the pressure relief groove 13, and the internal high-temperature, high-pressure gas and flames can be discharged to a safe area in time;

[0034] Second step, when an explosion occurs inside the metering box body 1, the high-pressure gas generated will impact the two explosion-proof plates 2. The two explosion-proof plates 2 will rotate around the movable shaft 22 under the impact. When the two explosion-proof plates 2 rotate, they will drive the two L-shaped metal plates 21 to rotate. At this time, the two L-shaped metal plates 21 are no longer adsorbed to the magnetic strip 14. After the explosion-proof plates 2 rotate and open, the high-temperature, high-pressure gas and flames inside the metering box body 1 will be discharged upward to achieve pressure relief;

[0035] By arranging the cooperation of the T-shaped chute 12 and the magnetic attraction strip 14, in the prior art, the fixing between the existing explosion vent panel 2 and the metering box body 1 uses nylon screws, which has problems such as poor sealing and inconvenient reset. When the L-shaped metal plate 21 in this device adsorbs on the magnetic attraction strip 14, it can provide a relatively uniform pressure on the entire contact surface, making the sealing effect between the explosion vent panel 2 and the installation part better. After the explosion pressure disappears, the explosion vent panel 2 can continue to adsorb on the magnetic attraction strip 14 under the action of magnetic force and continue to play a protective role, and can be used repeatedly for many times;

[0036] In the third step, when the two explosion vent panels 2 are impacted and rotated upward, they will drive the two steel wire ropes 33 to move upward. The upward movement of the two steel wire ropes 33 will drive the two T-shaped sliders 32 to move upward in the two T-shaped chutes 12. The movement of the two T-shaped sliders 32 will drive the nozzle cover 3 to move upward. At this time, the ends of the two fire nozzles 71 are no longer blocked, facilitating the subsequent fire extinguishing work of the fire nozzles 71 inside the metering box body 1;

[0037] By arranging the cooperation of the nozzle cover 3 and the steel wire rope 33, when the two connecting ducts 7 are not in daily use, the two connecting ducts 7 are covered by the two nozzle covers 3 to achieve protection, avoiding scratching and impact on the nozzles, connecting parts, etc. of the connecting ducts 7, preventing damage such as deformation and rupture, and avoiding that sundries may enter the inside of the connecting ducts 7 and block the nozzles of the connecting ducts 7, ensuring that the fire extinguishing agent can be ejected in time when a fire occurs;

[0038] In the fourth step, when the explosion vent panel 2 is impacted and opened, the rotation of the explosion vent panel 2 will contact the pressure sensor 51. Because the explosion vent panel 2 has a certain impact force at this time, when the explosion vent panel 2 rotates and contacts the pressure sensor 51, it will generate a force on the pressure sensor 51. The user can set the threshold of the pressure range detected by the pressure sensor 51. After the impact pressure of the explosion vent panel 2 on the pressure sensor 51 reaches the corresponding threshold, the pressure sensor 51 can identify that the explosion vent panel 2 is in the open and explosion venting state at this time. The pressure sensor 51 transmits the signal to the relay 5, and the relay 5 starts the suction pump 61 through the connecting wire 63. At this time, the suction pump 61 will suck the fire extinguishing agent in the fire extinguishing agent storage tank 6 into the two connecting ducts 7. Finally, the fire extinguishing agent will be ejected from the fire nozzles 71 at the ends of the connecting ducts 7 to extinguish the flames on the inner wall of the metering box body 1 and avoid causing more serious accidents;

[0039] The device is provided with an L-shaped baffle 4 and a relay 5 in cooperation. The L-shaped baffle 4 and the relay 5 are located above the two explosion relief panels 2. When an explosion occurs in the metering box body 1 and the explosion relief panel 2 is opened by explosion relief, a certain shielding effect can be exerted on the explosion relief panel 2, avoiding the explosion relief panel 2 being broken and flying away, which may splash around at a relatively high speed and may cause damage to surrounding pedestrians or objects. The L-shaped baffle 4 can limit the explosion relief panel 2 within a certain range, reducing the possibility of its collision with other objects, thereby reducing the risk of secondary injury;

[0040] The device is provided with a pressure sensor 51, a relay 5 and a fire extinguishing agent storage tank 6 in cooperation. After the explosion relief panel 2 is broken open due to an explosion in the metering box body 1, the pressure sensor 51 is pressed by the explosion relief panel 2, so that the fire extinguishing agent storage tank 6 can be opened in time to carry out fire extinguishing work inside the metering box body 1, avoiding more serious accidents caused by the spread of fire. Through the cooperation of the pressure sensor 51, the relay 5 and the suction pump 61, the response is timely, and the pressure sensor 51 can set a pressure threshold, which can effectively avoid the misoperation of the equipment caused by accidental touch, and it can achieve effective fire extinguishing protection for the metering box body 1;

[0041] The device is arranged such that the relay 5, the pressure sensor 51 and the suction pump 61 are all located outside the metering box body 1. Even when a fire explosion occurs inside the metering box body 1, the main components such as the relay 5, the pressure sensor 51 and the suction pump 61 are not in the high-temperature open fire area, ensuring that they can operate quickly when the metering box body 1 needs fire extinguishing protection and are not affected by the high-temperature open fire inside the metering box body 1, ensuring its protection effect.

[0042] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. An electric energy metering box with a protection structure, comprising a metering box body (1), characterized in that: A protection mechanism facilitating pressure relief and explosion protection of the metering box body (1) is provided on the metering box body (1), and a fire extinguishing mechanism assisting the metering box body (1) in extinguishing fire is provided on the metering box body (1). Among them, the protection mechanism includes an explosion vent panel (2) and an L-shaped baffle (4), and the fire extinguishing mechanism includes a nozzle cover (3), an L-shaped baffle (4), a relay (5), a fire extinguishing agent storage tank (6), and two connecting ducts (7). Two pressure relief grooves (13) are opened at the upper end of the metering box body (1). The number of explosion vent panels (2) is two, and the two explosion vent panels (2) are respectively located on the inner side walls of the pressure relief grooves (13). The number of nozzle covers (3) is two, and the two nozzle covers (3) are respectively located at both end parts on the inner side walls of the metering box body (1). The L-shaped baffle (4) is fixedly installed at the upper end of the metering box body (1). A fixing groove (41) is penetrated and opened at the upper end of the L-shaped baffle (4). The relay (5) is fixedly installed on the inner side wall of the fixing groove (41). The fire extinguishing agent storage tank (6) is fixedly installed at the upper end of the L-shaped baffle (4). Installation round grooves (11) are penetrated through both end parts of the metering box body (1). T-shaped sliding grooves (12) are opened at both end parts on the inner side wall of the metering box body (1). Two magnetic strips (14) are fixedly installed at the upper end of the metering box body (1), and the two magnetic strips (14) are respectively located at the side ends of the pressure relief grooves (13). A movable shaft (22) is rotatably installed through the side end of the upper section of the metering box body (1). The two explosion vent panels (2) are fixedly installed on the circumferential ends of the movable shaft (22). L-shaped metal plates (21) are fixedly installed at the upper ends of the two explosion vent panels (2), and the two L-shaped metal plates (21) are respectively adsorbed to the magnetic strips (14). Side rods (31) are fixedly installed at the side ends of the two nozzle covers (3). T-shaped sliders (32) are fixedly installed at the upper ends of the two side rods (31), and the two T-shaped sliders (32) are respectively slidably installed on the inner side walls of the two T-shaped sliding grooves (12).

2. The electric energy metering box with a protection structure according to claim 1, characterized in that, Steel wires (33) are fixedly installed at the upper ends of the two T-shaped sliders (32), and the ends of the two steel wires (33) are fixedly installed at the lower ends of the explosion vent panels (2).

3. The electric energy metering box with a protection structure according to claim 2, characterized in that, A pressure sensor (51) is fixedly installed at the lower end of the relay (5), and a wire-passing round groove (42) is penetrated through the side end of the L-shaped baffle (4).

4. The electric energy metering box with a protection structure according to claim 3, wherein, A suction pump (61) is fixedly installed at the side end of the fire extinguishing agent storage tank (6). A flow divider (62) is fixedly installed at the side end of the suction pump (61). A connecting wire (63) is fixedly installed between the pressure sensor (51) and the suction pump (61); Among them, the connecting wire (63) is located on the inner side wall of the wire-passing round groove (42).

5. The electric energy metering box with a protection structure according to claim 4, characterized in that, Both of the two connecting conduits (7) are fixedly installed on the diverter (62). Fire extinguishing nozzles (71) are fixedly installed at the ends of both of the two connecting conduits (7). The two fire extinguishing nozzles (71) are respectively fixedly installed on the inner side wall of the installation circular groove (11).

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