Electric energy metering box with protection structure

Abstract

The invention provides an electric energy metering box with a protection structure, and relates to the technical field of electric energy metering boxes, the electric energy metering box comprises a metering box body, the metering box body is provided with a protection mechanism facilitating pressure relief and explosion prevention of the metering box body, and the metering box body is provided with a fire extinguishing mechanism assisting the metering box body in fire extinguishing. The protection mechanism comprises explosion venting plates and an L-shaped baffle plate, the fire extinguishing mechanism comprises a spray head cover, an L-shaped baffle plate, a relay, a fire extinguishing agent storage box and two connecting guide pipes, two pressure relief grooves are formed in the upper end of the metering box body, and the number of the explosion venting plates is two. According to the device, the pressure sensor, the relay and the fire extinguishing agent storage box are arranged and matched, after explosion occurs in the metering box body to open the explosion venting plate, pressure is applied to the pressure sensor through the explosion venting plate, so that the fire extinguishing agent storage box can be opened in time, and fire extinguishing work is conducted on the interior of the metering box body; and more serious accidents caused by fire spreading are avoided.

Description

Technical Field

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

[0002] The electric energy meter box is an electrical device used to measure, monitor and manage electric energy. It is usually installed in the power system to measure and record parameters such as the amount of electric energy consumed by users or specific circuits. It has the function of monitoring the circuit operation status and can monitor in real time whether parameters such as voltage and current are within the normal range. When abnormal conditions such as overvoltage, undervoltage, overcurrent, etc. occur, an alarm signal can be issued in time.

[0003] The Chinese patent publication number is: CN119253433A, an electric energy metering box with a protective structure. The invention sets a roller with evenly arranged convex points on the surface of the filter. The roller rolls on the filter to clean the dust accumulated on the surface of the filter. The convex points are inserted into the mesh of the filter to squeeze the dust out of the mesh, thereby quickly cleaning the blocked mesh.

[0004] The existing electric energy meter box has the following disadvantages when in use: Existing electric energy meter boxes are equipped with explosion relief plates and pressure relief channels in the event of an explosion. However, the existing explosion relief plates and pressure relief channels are fixed with nylon screws, which may cause a gap between the explosion relief plates and the installation parts due to uneven tightening of the screws, affecting the sealing performance. Moreover, after the explosion relief plates fixed with nylon screws are opened, they usually need to be manually reinstalled and fixed, and the protective function may not be restored in time in an emergency. The existing electricity meter box achieves pressure relief and explosion prevention through a pressure relief channel to prevent the entire box from exploding and causing more serious accidents. However, it is impossible to extinguish the fire in time after the pressure is relieved, and manual discovery and removal of fire-fighting equipment are required to extinguish the fire. If there is no fire-fighting equipment nearby, it is necessary to wait for the rescue team to extinguish the fire, resulting in a certain delay in fire extinguishing, which may lead to secondary explosions and other accidents due to the fire. In view of this, the existing structure and defects are studied and improved, and an electric energy metering box with a protective structure is provided, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an electric energy meter box with a protective structure to solve the above problems.

[0006] The utility model discloses an electric energy meter box with a protective structure, comprising a meter box body, the meter box body is provided with a protective mechanism for facilitating the pressure relief and explosion prevention of the meter box body, the meter box body is provided with a fire extinguishing mechanism for assisting the meter box body in extinguishing a fire, the protective mechanism comprises an explosion relief plate and an L-shaped shielding plate, the fire extinguishing mechanism comprises a nozzle cover, an L-shaped shielding plate, a relay, a fire extinguishing agent storage box and two connecting conduits, the upper end portion of the meter box body is provided with two pressure relief grooves, the number of the explosion relief plates is two, and the two explosion relief plates are respectively located on the inner side walls of the pressure relief grooves, the number of the nozzle covers is two, and the two nozzle covers are respectively located on the two side ends of the inner side walls of the meter box body, the L-shaped shielding plate is fixedly installed on the upper end portion of the meter box body, the upper end portion of the L-shaped shielding plate is penetrated with a fixing groove, the relay is fixedly installed on the inner side wall of the fixing groove, the fire extinguishing agent storage box is fixedly installed on the upper end portion of the L-shaped shielding plate, and the two side ends of the meter box body are penetrated with openings The cam is provided with an L-shaped metal plate, and the two L-shaped metal plates are respectively adsorbed by the magnetic strips. The side ends of the two nozzle covers are fixedly installed with side rods, and the upper ends of the two side rods are fixedly installed with T-shaped sliders, and the two T-shaped sliders are respectively slidably installed on the inner side walls of the two T-shaped slides, and the upper ends of the two T-shaped sliders are fixedly installed with steel wire ropes, and the ends of the two steel wire ropes are fixedly installed on the lower end of the explosion-proof plate, and a pressure sensor is fixedly installed on the lower end of the relay, and the side ends of the L-shaped baffle plate are penetrated with a through-line circular groove.

[0007] Preferably, a suction pump is fixedly installed on the side end of the fire extinguishing agent storage box, a diverter is fixedly installed on 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 wall of the wire circular groove.

[0008] Preferably, the two connecting conduits are both fixedly mounted on the diverter, and fire extinguishing nozzles are both fixedly mounted on the ends of the two connecting conduits, and the two fire extinguishing nozzles are respectively fixedly mounted on the inner side walls of the mounting circular groove.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a T-shaped slide groove and a magnetic strip are provided to cooperate with each other. The existing explosion venting plate and the metering box are fixed with nylon screws, which may result in poor sealing and inconvenient resetting. When the L-shaped metal plate in the device is adsorbed on the magnetic strip, it can provide a relatively uniform pressure on the entire contact surface, so that the sealing effect between the explosion venting plate and the installation part is better. After the explosion pressure disappears, the explosion venting plate can continue to be adsorbed on the magnetic strip under the action of magnetic force, continue to play a protective role, and can be used repeatedly.

[0010] In the present invention, by cooperating with the nozzle cover and the steel wire rope, when the two connecting conduits are not in daily use, the two connecting conduits are covered by the two nozzle covers for protection, so as to prevent the nozzles, connecting parts, etc. of the connecting conduits from being scratched and hit, and to prevent deformation, rupture and other damages, and to prevent debris from entering the interior of the connecting conduits and clogging the nozzles of the connecting conduits, thereby ensuring that the fire extinguishing agent can be sprayed out in time when a fire occurs.

[0011] In the present invention, an L-shaped baffle plate and a relay are provided in cooperation, and the L-shaped baffle plate and the relay are located above the two explosion-proof plates. When an explosion occurs in the metering box and the explosion-proof plates are opened, a certain shielding effect can be activated on the explosion-proof plates to prevent the explosion-proof plates from being blown open and flying around at a high speed, which may cause damage to pedestrians or objects around. The L-shaped baffle plate can limit the explosion-proof plates within a certain range, reduce the possibility of collision with other objects, and thus reduce the risk of secondary injuries.

[0012] In the present invention, a pressure sensor, a relay and a fire extinguishing agent storage box are provided in coordination with each other. After an explosion occurs in the metering box and the explosion relief plate is broken, pressure is applied to the pressure sensor through the explosion relief plate, so that the fire extinguishing agent storage box can be opened in time, and fire extinguishing work can be carried out inside the metering box to avoid the spread of fire and cause more serious accidents. The pressure sensor, the relay and the suction pump are coordinated, and the response is timely. The pressure sensor can set a pressure threshold, which can effectively avoid the false start-up of the equipment caused by accidental touch, and can achieve effective fire extinguishing protection for the metering box.

[0013] In the present invention, the relay, pressure sensor and suction pump are all arranged on the outside of the metering box. Even if a fire or explosion occurs inside the metering box, the main components such as the relay, pressure sensor and suction pump are not in the high-temperature open flame area. This ensures that the metering box can operate quickly when fire extinguishing protection is required and is not affected by the high-temperature open flame inside the metering box, thereby ensuring its protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the metering box of the present invention; Figure 2 It is a structural schematic diagram of the fire extinguishing agent storage box of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the fire extinguishing agent storage box of the present invention; Figure 4 It is a structural schematic diagram of the explosion venting plate of the present invention; Figure 5 It is a schematic diagram of the explosion structure of the explosion venting plate of the present invention; Figure 6 It is a structural schematic diagram of the nozzle cover of the present invention; Figure 7 It is a schematic diagram of the structure of the steel wire rope of the present invention; Figure 8 It is a schematic diagram of the structure explosion of the L-shaped shielding plate of the present invention.

[0015] In the figure, the corresponding relationship between the component names and the figure numbers is: 1. Metering box; 11. Mounting circular groove; 12. T-shaped slide groove; 13. Pressure relief groove; 14. Magnetic strip; 2. Explosion relief plate; 21. L-shaped metal plate; 22. Movable shaft; 3. Nozzle cover; 31. Side rod; 32. T-shaped slide block; 33. Wire rope; 4. L-shaped baffle plate; 41. Fixed groove; 42. Wire groove; 5. Relay; 51. Pressure sensor; 6. Fire extinguishing agent storage box; 61. Suction pump; 62. Diverter; 63. Connecting wires; 7. Connecting conduit; 71. Fire extinguishing nozzle. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] See also Figure 1-Figure 8 The present invention provides an electric energy meter box with a protective structure, including a meter box body 1, a protective mechanism for facilitating the meter box body 1 to release pressure and prevent explosion, and a fire extinguishing mechanism for assisting the meter box body 1 to extinguish fire. During the long-term use of the meter box body 1, there are aging of the lines, insulation damage, total power exceeding the rated capacity, or in thunderstorms, which may cause the electrical components inside the meter box body 1 to heat up rapidly, thereby causing fire and explosion. The impact force of the explosion can be relieved from the pressure relief groove 13, and the high-temperature, high-pressure gas and flame inside can be discharged to a safe area in time; The protection mechanism includes an explosion relief plate 2 and an L-shaped baffle plate 4. The fire extinguishing mechanism includes a nozzle cover 3, an L-shaped baffle plate 4, a relay 5, a fire extinguishing agent storage box 6 and two connecting conduits 7. Two pressure relief grooves 13 are provided at the upper end of the metering box 1. There are two explosion relief plates 2, and the two explosion relief plates 2 are respectively located on the inner side walls of the pressure relief groove 13. There are two nozzle covers 3, and the two nozzle covers 3 are respectively located on the two side ends of the inner side wall of the metering box 1. The L-shaped baffle plate 4 is fixedly installed on the upper end of the metering box 1. A fixing groove 41 is penetrated through the upper end of the L-shaped baffle plate 4. The relay 5 is fixedly installed on the inner side wall of the fixing groove 41. The fire extinguishing agent storage box 6 is fixedly installed on the upper end of the L-shaped baffle plate 4. Both side ends of the metering box 1 are penetrated with installation circular grooves 11. Both side ends of the inner side wall of the metering box 1 are provided with T-shaped slide grooves 12. Two magnetic strips 14 are fixedly installed on the upper end of the measuring box 1, and the two magnetic strips 14 are respectively located at the side ends of the pressure relief groove 13. The side ends of the upper section of the measuring box 1 are penetrated and rotatably installed with a movable shaft 22. The two explosion-proof plates 2 are fixedly installed on the circumferential ends of the movable shaft 22. The upper ends of the two explosion-proof plates 2 are fixedly installed with L-shaped metal plates 21. The two L-shaped metal plates 21 are respectively adsorbed with the magnetic strips 14. When an explosion occurs inside the measuring box 1, the high-pressure gas generated will impact the two explosion-proof plates 2. The two explosion-proof plates 2 will rotate with the movable shaft 22 as the center of the circle when they are impacted. When the two explosion-proof plates 2 rotate, the two L-shaped metal plates 21 will be driven to rotate. At this time, the two L-shaped metal plates 21 are no longer adsorbed with the magnetic strips 14. After the explosion-proof plates 2 are rotated and opened, the high-temperature, high-pressure gas and flame in the measuring box 1 will be discharged upward to achieve pressure relief. The side ends of the two nozzle covers 3 are fixedly installed with side rods 31, and the upper ends of the two side rods 31 are fixedly installed with T-shaped sliders 32. The two T-shaped sliders 32 are slidably installed on the inner side walls of the two T-shaped slide grooves 12 respectively. The upper ends of the two T-shaped sliders 32 are fixedly installed with steel wire ropes 33, and the ends of the two steel wire ropes 33 are fixedly installed on the lower end of the explosion-relief plate 2. When the two explosion-relief plates 2 are impacted and rotated upward, the two steel wire ropes 33 will be driven to move upward, and 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 slide grooves 12. The movement of the two T-shaped sliders 32 will drive the nozzle covers 3 to move upward. At this time, the ends of the two fire-extinguishing nozzles 71 are no longer blocked, which is convenient for the subsequent fire-extinguishing nozzles 71 to extinguish the fire in the metering box 1; A pressure sensor 51 is fixedly installed at the lower end of the relay 5, a through-line circular groove 42 is penetrated through the side end of the L-shaped baffle plate 4, a suction pump 61 is fixedly installed at the side end of the fire extinguishing agent storage box 6, and 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, and the connecting wire 63 is located on the inner side wall of the through-line circular groove 42. Two connecting conduits 7 are fixedly installed on the diverter 62, and 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 walls of the mounting circular groove 11. When the explosion venting plate 2 is impacted and opened, the explosion venting plate 2 rotates to contact the pressure sensor 51. Because the explosion venting plate 2 is present at this time A certain impact force is generated. When the explosion venting plate 2 rotates and contacts the pressure sensor 51, it will generate a force on the pressure sensor 51. The user can set a threshold value for the pressure range detected by the pressure sensor 51. After the explosion venting plate 2 impacts the pressure sensor 51 and reaches the corresponding threshold value, the pressure sensor 51 can recognize that the explosion venting plate 2 is in an open explosion venting state at this time. The pressure sensor 51 transmits a signal to the relay 5. 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 box 6 into the two connecting conduits 7. Finally, the fire extinguishing agent will be sprayed out from the fire extinguishing nozzle 71 at the end of the connecting conduit 7 to extinguish the flame on the inner wall of the metering box 1 to avoid causing more serious accidents.

[0018] Working principle: The first step is that in the long-term use of the metering box 1, there are aging of the lines, insulation damage, total power exceeding the rated capacity, or in thunderstorms, which may cause the electrical components inside the metering box 1 to heat up rapidly, thereby causing fire and explosion. The impact force of the explosion can be released from the pressure relief groove 13, and the high-temperature, high-pressure gas and flame inside can be discharged to a safe area in time; In the second step, when an explosion occurs inside the metering box 1, the high-pressure gas generated by the explosion will impact the two explosion-proof plates 2. The two explosion-proof plates 2 will rotate with the movable shaft 22 as the center of the circle. When the two explosion-proof plates 2 rotate, the two L-shaped metal plates 21 will be driven to rotate. At this time, the two L-shaped metal plates 21 are no longer attracted to the magnetic strip 14. After the explosion-proof plates 2 are rotated and opened, the high-temperature, high-pressure gas and flame in the metering box 1 will be discharged upward to achieve pressure relief; The device is provided with a T-shaped slide groove 12 and a magnetic strip 14 for matching. The existing explosion venting plate 2 and the metering box 1 are fixed with nylon screws, which may cause poor sealing and inconvenience in resetting. When the L-shaped metal plate 21 in the device is adsorbed on the magnetic strip 14, it can provide a relatively uniform pressure on the entire contact surface, so that the sealing effect between the explosion venting plate 2 and the installation part is better. After the explosion pressure disappears, the explosion venting plate 2 can continue to be adsorbed with the magnetic strip 14 under the action of magnetic force, continue to play a protective role, and can be used repeatedly. In the third step, when the two explosion relief plates 2 are impacted and rotated upward, the two steel wires 33 are driven to move upward, and the two steel wires 33 move upward to drive the two T-shaped sliders 32 to move upward in the two T-shaped slide grooves 12, and the movement of the two T-shaped sliders 32 drives the nozzle cover 3 to move upward, at which time the ends of the two fire extinguishing nozzles 71 are no longer blocked, which is convenient for the subsequent fire extinguishing nozzles 71 to extinguish the fire in the metering box 1; The device is provided with a nozzle cover 3 and a steel wire rope 33, and when the two connecting conduits 7 are not used daily, the two connecting conduits 7 are covered by the two nozzle covers 3 to achieve protection, so as to prevent the nozzles and connecting parts of the connecting conduits 7 from being scratched and hit, and prevent deformation, cracking and other damage, and prevent debris from entering the interior of the connecting conduits 7 and blocking the nozzles of the connecting conduits 7, so as to ensure that the fire extinguishing agent can be sprayed out in time when a fire occurs; The fourth step is that when the explosion venting plate 2 is impacted and opened, the explosion venting plate 2 rotates and contacts the pressure sensor 51. Since the explosion venting plate 2 has a certain impact force at this time, the explosion venting plate 2 will generate a force on the pressure sensor 51 when it rotates and contacts the pressure sensor 51. The user can set a threshold value for the pressure range detected by the pressure sensor 51. After the explosion venting plate 2 impacts the pressure sensor 51 and reaches the corresponding threshold value, the pressure sensor 51 can recognize that the explosion venting plate 2 is in the open explosion venting state at this time. The pressure sensor 51 transmits a signal to the relay 5. 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 box 6 into the two connecting conduits 7. Finally, the fire extinguishing agent will be sprayed from the fire extinguishing nozzle 71 at the end of the connecting conduit 7 to extinguish the flame on the inner wall of the metering box 1 to avoid causing more serious accidents. The device is provided with an L-shaped shielding plate 4 and a relay 5, which are located above the two explosion relief plates 2. When the metering box 1 explodes, the explosion relief plate 2 is opened to relieve the explosion, and a certain shielding effect can be activated on the explosion relief plate 2 to prevent the explosion relief plate 2 from being broken and flying around at a high speed, which may cause damage to pedestrians or objects around. The L-shaped shielding plate 4 can limit the explosion relief plate 2 within a certain range, reduce the possibility of collision with other objects, and thus reduce the risk of secondary injury. The device is provided with a pressure sensor 51, a relay 5 and a fire extinguishing agent storage box 6. After an explosion occurs in the metering box 1 and the explosion relief plate 2 is broken, pressure is applied to the pressure sensor 51 through the explosion relief plate 2, so that the fire extinguishing agent storage box 6 can be opened in time, and the fire inside the metering box 1 is extinguished to prevent the fire from spreading and causing more serious accidents. The pressure sensor 51, the relay 5 and the suction pump 61 are coordinated, and the response is timely. The pressure sensor 51 can be set with a pressure threshold, which can effectively avoid the equipment from being started by mistake due to mistaken touch, and can achieve effective fire extinguishing protection for the metering box 1. This device arranges the relay 5, pressure sensor 51 and suction pump 61 on the outside of the metering box 1. Even if a fire or explosion occurs inside the metering box 1, the main components such as the relay 5, pressure sensor 51 and suction pump 61 are not in the high-temperature open flame area. This ensures that the device can operate quickly when the metering box 1 needs to be extinguished and is not affected by the high-temperature open flame inside the metering box 1, thereby ensuring its protection effect.

[0019] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order 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 thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An electric energy metering box with a protective structure, comprising a metering box body (1), characterized in that: The metering box (1) is provided with a protective mechanism for facilitating the metering box (1) to release pressure and prevent explosion, and the metering box (1) is provided with a fire extinguishing mechanism for assisting the metering box (1) to extinguish fire; The protective mechanism comprises an explosion relief plate (2) and an L-shaped baffle plate (4); the fire extinguishing mechanism comprises a nozzle cover (3), an L-shaped baffle plate (4), a relay (5), a fire extinguishing agent storage box (6) and two connecting conduits (7); the upper end of the metering box (1) is provided with two pressure relief grooves (13); the number of the 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 the nozzle covers (3) is two, and the two nozzle covers (3) are respectively located on the two side ends of the inner side wall of the metering box (1); the L-shaped baffle plate (4) is fixedly mounted on the upper end of the metering box (1); a fixing groove (41) is penetrated through the upper end of the L-shaped baffle plate (4); the relay (5) is fixedly mounted on the inner side wall of the fixing groove (41); and the fire extinguishing agent storage box (6) is fixedly mounted on the upper end of the L-shaped baffle plate (4).

2. The electric energy meter box with a protective structure as claimed in claim 1, characterized in that: Both side ends of the metering box (1) are provided with mounting circular grooves (11), and both side ends of the inner wall of the metering box (1) are provided with T-shaped sliding grooves (12).

3. The electric energy meter box with a protective structure as claimed in claim 2, characterized in that: Two magnetic strips (14) are fixedly mounted on the upper end of the metering box (1), and the two magnetic strips (14) are respectively located at the side ends of the pressure relief groove (13).

4. The electric energy meter box with a protective structure as claimed in claim 3, characterized in that: A movable shaft (22) is rotatably mounted through the side end of the upper section of the metering box (1), and the two explosion relief plates (2) are fixedly mounted on the circumferential ends of the movable shaft (22).

5. The electric energy meter box with a protective structure as claimed in claim 4, characterized in that: An L-shaped metal plate (21) is fixedly mounted on the upper ends of the two explosion relief plates (2), and the two L-shaped metal plates (21) are respectively attracted to the magnetic attraction strips (14).

6. The electric energy meter box with a protective structure as claimed in claim 5, characterized in that: Side rods (31) are fixedly mounted on the side ends of the two nozzle covers (3), T-shaped sliders (32) are fixedly mounted on the upper ends of the two side rods (31), and the two T-shaped sliders (32) are slidably mounted on the inner side walls of the two T-shaped slide grooves (12), respectively.

7. The electric energy meter box with a protective structure as claimed in claim 6, characterized in that: Steel wire ropes (33) are fixedly mounted on the upper ends of the two T-shaped sliding blocks (32), and the ends of the two steel wire ropes (33) are fixedly mounted on the lower end of the explosion relief plate (2).

8. The electric energy meter box with a protective structure as claimed in claim 7, characterized in that: A pressure sensor (51) is fixedly mounted on the lower end of the relay (5), and a wire-passing circular groove (42) is provided through the side end of the L-shaped shielding plate (4).

9. The electric energy meter box with a protective structure as claimed in claim 8, characterized in that: A suction pump (61) is fixedly mounted on the side end of the fire extinguishing agent storage box (6), a flow divider (62) is fixedly mounted on the side end of the suction pump (61), and a connecting wire (63) is fixedly mounted between the pressure sensor (51) and the suction pump (61); Wherein, the connecting wire (63) is located on the inner side wall of the wire circular groove (42).

10. The electric energy meter box with a protective structure as claimed in claim 9, characterized in that: The two connecting conduits (7) are both fixedly mounted on the diverter (62), and fire extinguishing nozzles (71) are both fixedly mounted on the ends of the two connecting conduits (7), and the two fire extinguishing nozzles (71) are respectively fixedly mounted on the inner side walls of the mounting circular groove (11).

Images