Flame-proof electric energy meter with high safety

Abstract

The invention discloses a flame-proof electric energy meter with high safety. The flame-proof electric energy meter comprises an electric energy meter main body and a fire-extinguishing flame-retardant device, according to the invention, the fire-extinguishing flame-retardant device is arranged, that is, the supporting frame is matched with the wiring assembly arranged at the upper end in the supporting frame, so that stable installation of an external wiring can be realized, and in the process of moving the supporting frame into the flame-retardant shell, butt joint of the wiring and a bottom interface of the electric energy meter main body is conveniently realized, and temperature sensors arranged at the two sides of the upper end in the flame-retardant shell are arranged. The temperature can be detected in real time, when the temperature exceeds a temperature threshold value, a trigger mechanism is automatically controlled to enable cutting knives on the two sides in the cutting assembly to automatically move upwards, a storage bag is cut, internal carbon dioxide gas is sprayed out for inflaming retarding and fire extinguishing, meanwhile, along with upward movement of the cutting knives, abutting of a blocking plate in the blocking assembly can be relieved, the blocking plate automatically moves upwards, and therefore the blocking effect is achieved. And the filter screen is blocked, so that external air entering is reduced, the re-combustion rate is reduced, and the use safety and flame retardance of the electric energy meter are improved at present.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and specifically relates to a flame-proof electric energy meter with high safety. Background Technique

[0002] An electric energy meter is a device used to measure and record the electricity consumption, and is widely used in power grids and households. An electric energy meter, that is, a measuring instrument for measuring electricity, is also called an electricity meter, a fire meter, an electric power meter, a kilowatt-hour meter, and a meter for measuring various electrical parameters; now, the electric meter has become an essential part of people's lives.

[0003] Currently, during the use of an electric energy meter, if the electrical load of wires and cables is too large or a short circuit occurs, it will cause the temperature of the wires and cables to be too high and even catch fire spontaneously. Although traditional electric energy meters usually have air switches that can disconnect the circuit, they only cut off the power connection. When the temperature rises to the ignition state, the wires and cables are more likely to catch fire, and then spread outside the electric energy meter, resulting in other objects near the electric energy meter being affected by high temperature and fire. In severe cases, it will not only cause instrument damage and data loss, but also easily cause fire problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a flame-proof electric energy meter with high safety to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A flame-proof electric energy meter with high safety, including an electric energy meter main body and a numerical display area. The numerical display area is installed on the front side of the electric energy meter main body. It also includes a fire extinguishing and flame-retardant device arranged at the lower end of the electric energy meter main body. The fire extinguishing and flame-retardant device includes a flame-retardant shell docked to the lower end of the electric energy meter main body, a through hole opened at the upper end of the flame-retardant shell, a covering panel installed on the front side of the flame-retardant shell, a support frame installed inside the flame-retardant shell, a wiring assembly arranged at the upper end inside the support frame, cutting assemblies arranged inside the left and right sides of the support frame, a triggering mechanism built inside the upper end of the flame-retardant shell and the triggering mechanism is docked with the two cutting assemblies, a blocking assembly installed inside one side of the covering panel, storage sacs built inside the upper ends of both sides of the flame-retardant shell, and temperature sensors installed at the upper ends of both sides inside the flame-retardant shell.

[0006] Preferably, the wiring assembly includes a fixing plate, a moving plate and a locking shaft. The fixing plate is fixedly connected to the upper end inside the support frame. The moving plate is oppositely arranged in front of the fixing plate. The locking shafts are inserted into both sides of the moving plate, and the rear ends of both locking shafts are connected to the inside of the fixing plate.

[0007] Preferably, the cutting assembly includes an inner groove, a cutting knife, a bump, a guide rod, a first spring, and a transmission plate. The inner groove is formed on both the left and right sides of the support frame. The cutting knife is slidably installed inside the inner groove. One side of the lower end of the cutting knife is fixedly provided with a bump. Both sides of the bottom of the cutting knife are inserted into the guide rod, and the first spring is installed on the outside of both guide rods. The transmission plate is fixedly provided at the outer end of one side of the cutting knife, and the whole transmission plate faces the covering panel.

[0008] Preferably, the triggering mechanism includes a cylinder, a connecting plate, a first connecting shaft, a connecting rod, a second connecting shaft, a side plate, a connecting end, a rotating shaft, a docking plate, a vertical plate, and a resisting block. The cylinder is arranged at the upper end inside the flame retardant shell. The bottom of the cylinder is butted with the connecting plate, and the first connecting shaft is movably inserted into both sides of the connecting plate. One side of the first connecting shaft is fixedly connected with the connecting rod, and one side of the connecting rod is docked with the second connecting shaft. Side plates are installed on both outer ends of the second connecting shaft, and the bottoms of both side plates are fixed to the connecting end. The middle of the connecting end is connected with the rotating shaft. One side of the rotating shaft is inserted into the docking plate, and the outer side of the middle of the rotating shaft is connected with the vertical plate. One side of the bottom of the vertical plate is fixedly connected with the resisting block, and the outside of the resisting block abuts against the bump.

[0009] Preferably, the blocking assembly includes a rectangular groove, a filter screen, a blocking plate, an exhaust port, a fixing block, a limiting rod, and a second spring. The rectangular groove is formed on the inner side of the covering panel, and a filter screen is installed on one side of the rectangular groove. The blocking plate is slidably installed inside the rectangular groove, and an exhaust port is formed inside the blocking plate. Fixing blocks are fixedly provided on both outer ends of the blocking plate, and both sides of the blocking plate are inserted into the limiting rod. The second spring is arranged on the outer side of the lower end of the limiting rod. The outside of the fixing block abuts against the transmission plate.

[0010] Preferably, a circular hole consistent with the through hole formed at the upper end of the flame retardant shell is formed at the bottom of the support frame, and the four corners of the bottom of the support frame are bolted to the flame retardant shell.

[0011] Preferably, the fixed plate and the moving plate are symmetrically arranged front and back, and semi-circular concave openings are integrally formed on the opposite surfaces of the fixed plate and the moving plate.

[0012] Preferably, inclined grooves in opposite directions are formed on both sides inside the connecting plate, and the connecting plate is connected to the first connecting shaft through the inclined grooves formed on both sides.

[0013] Preferably, the whole first connecting shaft is horizontally arranged at the rear side of the upper end of the support frame, and the first connecting shaft is horizontally slidably docked with the rear side of the upper end inside the flame retardant shell.

[0014] Preferably, the exhaust ports are symmetrically formed up and down inside the blocking plate, and the number and size of the exhaust ports are consistent with the filter screen arranged on one side inside the rectangular groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is provided with a fire extinguishing and flame retardant device, that is, through the cooperation between the support frame and the wiring assembly arranged at the upper end of the support frame, the stable installation of the external wiring can be achieved, and in the process of moving the support frame into the flame retardant shell, the wiring is conveniently connected to the bottom interface of the electric energy meter body, and the temperature sensors arranged on both sides of the upper end of the flame retardant shell can detect the temperature in real time. When the temperature threshold is exceeded, the trigger mechanism is automatically controlled to automatically control the cutting knives on both sides of the cutting assembly to automatically move up to cut the storage capsule, so that the internal carbon dioxide gas is sprayed out to flame retardant and extinguish the fire. At the same time, as the cutting knife moves up, the resistance of the sealing plate inside the sealing assembly can be released, so that the sealing plate automatically moves up to block the filter, reduce the entry of external air, and reduce the probability of re-ignition, thereby improving the safety and flame retardancy of the electric energy meter.

[0017] The setting of the wiring assembly, that is, when performing external wiring docking activities, the wiring can be moved between the fixed plate and the movable plate. Through the cooperation of the semicircular recesses provided on the opposite surfaces of the fixed plate and the movable plate, the wiring can be clamped and installed, and by locking the lock shaft, the docking firmness of the fixed plate and the movable plate can be improved, thereby ensuring the stability of the wiring installation state and the accuracy of the subsequent internal docking.

[0018] The setting of the cutting assembly and the trigger mechanism, that is, when the support frame moves into the flame retardant shell, the cutting knives arranged at the inner grooves on both sides can be moved synchronously, and when it moves to a certain position, the protrusions arranged on the outside of the cutting knife will abut against the abutment blocks arranged on the inner side of the lower end of the vertical plate, so that the cutting knife moves downward during the moving process, so that the compression of the first spring arranged on the outside of the guide rod can be realized, and when the temperature sensor detects that the temperature inside the flame retardant shell exceeds the threshold value, the cylinder will be operated to move the connecting plate downward, so that the connecting plate can cooperate with the inclined grooves opened on both sides to realize the first connecting shafts on both sides. , the lateral relative movement of the connecting rod and the second connecting shaft, thereby, the side edges docked on both sides of the outer end of the second connecting shaft can realize the rotation of the connecting end head connected to the bottom, so that the rotating shaft docked in the middle of the connecting end head can realize the rotation and swing of the vertical plate connected to the outer side of the middle part, so as to automatically release the abutment effect between the abutment block and the protrusion, so that the first spring in the compressed state, with the elastic force, quickly pushes up the cutting knife, so that the cutting knife will automatically move up to cut the storage bag, so that the carbon dioxide gas stored in the storage bag is automatically ejected, and flame retardant and fire extinguishing activities are carried out to avoid further expansion of the fire.

[0019] The setting of the blocking component means that when the covering panel is installed on the front side of the flame-retardant shell, the fixing blocks arranged on both outer ends of the blocking plate will be in contact with the transmission plates arranged on the front sides of the cutting knives on both sides, so that the fixing plate will be guided by the abutting blocks to move the blocking plate downward. In this way, the exhaust ports opened on both sides inside the blocking plate can be relatively communicated with the filter screens arranged on both sides inside the rectangular groove. In this way, the heat dissipation inside the flame-retardant shell can be realized, the problem of heat accumulation can be reduced, and the probability of spontaneous combustion can be lowered. If a spontaneous combustion problem occurs, when the cutting knife manually triggers the mechanism to drive and perform the automatic upward cutting activity, the position of the transmission plate arranged on the front side can be moved and adjusted. In this way, the abutting effect between the transmission plate and the fixing block will be released. Furthermore, the second springs arranged at the outer ends of the limiting rods on both sides of the blocking plate will automatically move the blocking plate upward to release the communication effect between the exhaust port and the filter screen, so as to block the filter screen, prevent external air from entering the flame-retardant shell, and ensure the flame-retardant and fire-extinguishing effect of carbon dioxide gas and the oxygen isolation effect, greatly improving the use safety and flame retardancy of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the fire-extinguishing and flame-retardant device of the present invention;

[0022] Figure 3 Schematic diagram of the disassembled structure of the fire-extinguishing and flame-retardant device of the present invention;

[0023] Figure 4 Schematic diagram of the front view of the internal structure of the fire-extinguishing and flame-retardant device of the present invention;

[0024] Figure 5 Schematic diagram of the three-dimensional combined structure of the support frame, wiring component, cutting component and trigger mechanism of the present invention;

[0025] Figure 6 Schematic diagram of the disassembled structure of the wiring component of the present invention;

[0026] Figure 7 Schematic diagram of the three-dimensional structure of the cutting component of the present invention;

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the trigger mechanism of the present invention;

[0028] Figure 9 For the present invention Figure 8 Enlarged structure diagram at position A;

[0029] Figure 10 For the present invention Figure 8 Enlarged structure diagram at position B;

[0030] Figure 11 Schematic diagram of the rear three-dimensional structure of the blocking component of the present invention;

[0031] Figure 12 This is a schematic diagram of the disassembly structure of the plugging component of the present invention.

[0032] In the figure: electricity meter main body - 1, numerical display area - 2, fire extinguishing and flame retardant device - 3, flame retardant shell - 31, through hole - 32, covering panel - 33, support frame - 34, wiring component - 35, fixing plate - 351, moving plate - 352, locking shaft - 353, cutting component - 36, inner groove - 361, cutting knife - 362, bump - 363, guide rod - 364, first spring - 365, transmission plate - 366, triggering mechanism - 37, air cylinder - 371, connecting plate - 372, first connecting shaft - 373, connecting rod - 374, second connecting shaft - 375, side plate - 376, connecting end - 377, rotating shaft - 378, docking plate - 379, vertical plate - 3710, abutting block - 3711, plugging component - 38, rectangular groove - 381, filter screen - 382, plugging plate - 383, exhaust port - 384, fixing block - 385, limiting rod - 386, second spring - 387, storage bladder - 39, temperature sensor - 310. Specific embodiments

[0033] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0034] Please refer to Figure 1 , the present invention provides a highly safe anti - combustion electricity meter, including an electricity meter main body 1 and a numerical display area 2. The numerical display area 2 is installed on the front side of the electricity meter main body 1, and further includes a fire extinguishing and flame retardant device 3 provided at the lower end of the electricity meter main body 1.

[0035] Please refer to Figures 2 - 5The fire extinguishing and flame retardant device 3 in this embodiment includes a flame retardant shell 31 connected to the lower end of the electric energy meter body 1, five through holes 32 are equidistantly arranged on the upper end of the flame retardant shell 31, and the diameter of the through holes 32 is drilled according to actual conditions, and the setting of the through holes 32 can facilitate the penetration and connection of external wiring, a cover panel 33 bolted to the front side of the flame retardant shell 31 for covering and protection, a support frame 34 built into the flame retardant shell 31, a wiring assembly 35 installed at the upper end of the support frame 34 for wiring clamping and fastening, a cutting assembly 36 symmetrically arranged on the left and right sides of the support frame 34, a trigger mechanism 37 built into the upper end of the flame retardant shell 31, and a trigger mechanism 37 The mechanism 37 is connected to the cutting components 36 on both sides, and is installed on the sealing component 38 inside one side of the cover panel 33. The storage bags 39 are built into the flame retardant shell 31 on both sides of the upper end, and carbon dioxide gas is stored inside the storage bags 39. In this way, when spontaneous combustion occurs, the use of carbon dioxide gas can quickly extinguish sparks and isolate oxygen, thereby reducing the probability of re-ignition. The temperature sensor 310 is installed on the left and right sides of the upper end of the flame retardant shell 31, and the temperature sensor 310 is electrically connected to the trigger mechanism 37. That is, when the temperature sensor 310 detects that the temperature exceeds the threshold value, the trigger mechanism 37 will be automatically triggered through an electrical signal to realize automatic fire extinguishing and flame retardant activities.

[0036] Among them, a circular hole consistent with the through hole 32 opened at the upper end of the flame retardant shell 31 is opened at the bottom of the support frame 34, and the four corners of the bottom of the support frame 34 are bolted to the flame retardant shell 31, so that the external docking of the wiring can be conveniently realized to avoid the wiring extending into the interior of the electric energy meter body 1.

[0037] See also Figure 6 The wiring assembly 35 in this embodiment includes a fixed plate 351, a movable plate 352 and a locking shaft 353. The fixed plate 351 is fixedly connected to the upper end of the support frame 34. The movable plate 352 is arranged opposite to the front side of the fixed plate 351. The locking shafts 353 are longitudinally inserted on the left and right sides of the movable plate 352, and the rear ends of the locking shafts 353 on the left and right sides are connected to the inside of the fixed plate 351, and the rear ends of the locking shafts 353 on both sides are threadedly connected to the inside of the two sides of the fixed plate 351.

[0038] Among them, the fixed plate 351 and the movable plate 352 are symmetrically arranged front and back, and the opposite surfaces of the fixed plate 351 and the movable plate 352 are integrally provided with semicircular recesses to ensure external wiring. Through the clamping activity of the fixed plate 351 and the movable plate 352, the stability of the subsequent wiring state is ensured.

[0039] Specifically, during the wiring activity, the wiring can be passed through the circular hole opened at the bottom of the support frame 34. Then, the wiring can be moved into the semi-circular notch opened in the fixing plate 351. By connecting the moving plate 352 to the front side of the fixing plate 351 and locking the moving plate 352 and the fixing plate 351 through the locking shaft 353, the clamping and locking of the wiring can be assisted to keep the wiring in a stable placement state. At this time, the support frame 34 can be moved into the flame-retardant shell 31, and the four corners at the bottom of the support frame 34 can be bolted to the flame-retardant shell 31. During the process of moving the wiring into the flame-retardant shell 31, the wired wiring that has completed the clamping and installation will pass through the through hole 32 opened at the upper end of the flame-retardant shell 31 during the moving process to automatically dock with the bottom interface of the electricity meter main body 1, so as to achieve accurate wiring docking activities and improve the wiring efficiency. Secondly, during the wiring maintenance activity, only by opening the covering panel 33 provided on the front side of the flame-retardant shell 31 to expose the wiring inside the flame-retardant shell 31, convenient wiring maintenance activities can be carried out.

[0040] Please refer to Figures 7 - 10 In this embodiment, the cutting assembly 36 includes an inner groove 361, a cutting knife 362, a convex block 363, a guide rod 364, a first spring 365 and a transmission plate 366. The inner groove 361 is opened on the left and right sides of the support frame 34. The cutting knife 362 is vertically slidably installed inside the inner groove 361, and the upper end of the cutting knife 362 faces the storage bladder 39. The lower end of the cutting knife 362 is fixedly connected to the middle of the side away from the inner surface of the inner groove 361 with a convex block 363. The two sides of the bottom of the cutting knife 362 are vertically butted with guide rods 364, and the first springs 365 are installed on the outer sides of the two guide rods 364. The cutting knife 362 is fixedly connected to the front side with a transmission plate 366, and the transmission plate 366 faces the covering panel 33 as a whole, and the transmission plate 366 is arranged in an inverted right-angled trapezoidal block as a whole.

[0041] Among them, the triggering mechanism 37 includes a cylinder 371, a connecting plate 372, a first connecting shaft 373, a connecting rod 374, a second connecting shaft 375, a side plate 376, a connecting end 377, a rotating shaft 378, a docking plate 379, a vertical plate 3710 and a resisting block 3711. The cylinder 371 is arranged at the rear side of the upper end inside the flame retardant shell 31. The bottom of the cylinder 371 is docked with the connecting plate 372. The first connecting shafts 373 are movably inserted into both the left and right sides of the connecting plate 372. The side of the first connecting shaft 373 away from the connecting plate 372 is fixedly connected to the connecting rod 374. The side of the connecting rod 374 away from the first connecting shaft 373 is docked with the second connecting shaft 375. Side plates 376 are installed on both the front and rear sides of the outer end of the second connecting shaft 375. The bottoms of the two side plates 376 are fixed to the connecting end 377. Among them, the middle parts of the two side plates 376 are both hollow. The middle part of the connecting end 377 is connected to the rotating shaft 378. The rear side of the rotating shaft 378 is inserted into the inside of the docking plate 379. The outer side of the middle part of the rotating shaft 378 is connected to the vertical plate 3710. Thus, when the rotating shaft 378 rotates, the swinging of the vertical plate 3710 can be realized synchronously. A resisting block 3711 is fixedly connected to one side of the bottom of the vertical plate 3710. The outer side of the resisting block 3711 abuts against the convex block 363. The docking plate 379 is fixedly connected to the upper end inside the flame retardant shell 31.

[0042] Among them, inclined grooves in opposite directions are opened on both sides inside the connecting plate 372. The connecting plate 372 is connected to the first connecting shaft 373 through the inclined grooves opened on both sides. When the connecting plate 372 moves up and down, the two-way synchronous or opposite movement can be realized through the docking effect between the inclined grooves on both sides and the first connecting shaft 373. The first connecting shaft 373 is integrally arranged horizontally relative to the rear side of the upper end of the support frame 34. The first connecting shaft 373 is horizontally slidably docked with the rear side of the upper end inside the flame retardant shell 31. In this way, the first connecting shaft 373 can be in a firm horizontal installation state and realize stable horizontal reciprocating movement subsequently.

[0043] Specifically, when the support frame 34 moves the wiring into the flame retardant shell 31, the cutting knife 362 installed at the inner groove 361 on the left and right sides of the support frame 34 can be moved into the two sides of the flame retardant shell 31, and when it moves to a certain position, the protrusion 363 provided on the outside of the cutting knife 362 and the block 3711 provided on the inner side of the lower end of the vertical plate 3710 will be blocked. In this way, the support frame 34 can realize the upward push movement of the cutting knife 362, and the cutting knife 362 can be squeezed, so that the cutting knife 362 can be cut. The guide rods 364 inserted on both sides of the bottom of the cutting knife 362 can guide the cutting knife 362 to move downward stably as a whole, and compress the first spring 365 provided on the outer side of the lower end of the guide rod 364. At the same time, the transmission plate 366 fixed on the front side of the cutting knife 362 will move downward synchronously to move to a suitable position for subsequent transmission cooperation of the blocking component 38. When the support frame 34 is completely moved into the flame retardant shell 31, the cutting knives 362 on both sides will cooperate with the first spring 365 in a compressed state to prepare for the power storage pop-up state.

[0044] When the temperature sensors 310 installed on both sides of the upper end of the flame retardant shell 31 detect that the temperature of the wiring in the docking state inside the flame retardant shell 31 exceeds the threshold, a fire extinguishing signal will be triggered, and the operation of the cylinder 371 set at the upper end of the rear side of the flame retardant shell 31 will be realized through the electrical signal, so that the cylinder 371 can push down the connecting plate 372 connected to the bottom, and as the connecting plate 372 moves downward, the first connecting shaft 373 docked at the inclined grooves on both sides of the connecting plate 372 will guide the movement of the inclined grooves. The connecting rod 374 connected to one side of the first connecting shaft 373 can synchronously realize the lateral pulling of the second connecting shaft 375 connected to one side, and the side plates 376 connected to both sides of the outer ends can be pulled by the lateral movement of the second connecting shaft 375, so that the connecting end 377 installed at the lower end of the side plate 376 and connected to the rear side of the rotating shaft 378 can rotate. When the connecting end 377 rotates with the transmission, the rotation of the rotating shaft 378 can be synchronously realized. In this way, The vertical plate 3710 installed on the outer side of the middle part of the rotating shaft 378 and realizing the resistance block 3711 to resist the outer protrusion 363 of the cutting knife 362 will then rotate and swing to drive the resistance block 3711 to move outward, so as to release the resistance block 3711 and the protrusion 363. In this way, when the resistance locking state is released, the first spring 365 arranged on the outer side of the guide rod 364 and in a compressed state will automatically rebound to realize the automatic upward push of the cutting knife 362, thereby, the cutting knife 362 as a whole will automatically and quickly move upward to automatically cut the storage bag 39 arranged relatively at the upper end, so that the carbon dioxide gas stored in the storage bag 39 is ejected to perform flame retardant and extinguish the flame retardant shell 31, and cooperate with the carbon dioxide gas to realize oxygen isolation, avoid the existence of oxygen in the flame retardant shell 31, and cause the problem of re-ignition, so as to realize that when the wiring has a spontaneous combustion problem, a fire extinguishing response can be made in time, thereby improving the safety and flame resistance of the electric energy meter;

[0045] When no spontaneous combustion is detected and wiring disassembly and maintenance are required, simply release the bolt lock between the support frame 34 and the flame retardant shell 31 to pull the support frame 34 out of the interior of the flame retardant shell 31. During the process of pulling out the support frame 34, the convex block 363 provided on the outer side of the cutting knife 362 will continuously abut against the abutting block 3711 provided on the inner side of the lower end of the vertical plate 3710 to prevent the cutting knife 362 from automatically moving outwards. Thus, when the cutting knife 362 is not performing a fire extinguishing operation, it cannot automatically move upwards to cut the storage bladder 39, which can ensure the accuracy of the device's use and avoid the occurrence of mis-triggering problems.

[0046] Please refer to Figures 11 - 12 In this embodiment, the plugging assembly 38 includes a rectangular groove 381, a filter screen 382, a plugging plate 383, an exhaust port 384, a fixing block 385, a limiting rod 386 and a second spring 387. The rectangular groove 381 is opened on the inner side of the covering panel 33, and two filter screens 382 are installed on one side of the rectangular groove 381. The filter screen 382 can prevent external dust from entering the interior of the flame retardant shell 31. A plugging plate 383 is slidably installed inside the rectangular groove 381, and an exhaust port 384 is opened inside the plugging plate 383. When the exhaust port 384 is opposite to the filter screen 382, a flow state can be formed to meet the auxiliary heat emission cooperation. When the exhaust port 384 is not opposite to the filter screen 382, convenient plugging can be achieved, so that when a spontaneous combustion problem occurs, it can help to plug and prevent external oxygen from entering, quickly reducing the spontaneous combustion risk. Both sides of the outer end of the plugging plate 383 are fixedly connected to the fixing block 385 near one side of the flame retardant shell 31, and the position of the fixing block 385 is arranged opposite to the front, back, up and down of the transmission plate 366. Both sides of the plugging plate 383 are slidably inserted into the limiting rod 386, and a second spring 387 is arranged on the outer side of the lower end of the limiting rod 386.

[0047] Among them, the exhaust ports 384 are symmetrically opened up and down inside the plugging plate 383, and the number and size of the exhaust ports 384 are the same as those of the filter screen 382 provided on one side inside the rectangular groove 381. In this way, a stable heat dissipation state of communication can be achieved, and at the same time, the effect of plugging and fire prevention assistance can be ensured.

[0048] Specifically, after the inward movement and docking of the wiring are completed, the cover panel 33 can be installed to the front side of the flame retardant shell 31. During the docking process, the blocking plate 383 provided at the rectangular groove 381 provided on the inner side of the cover panel 33 will automatically move downward through the counteracting effect of the fixing blocks 385 provided on both sides of the outer end and the transmission plates 366 provided on the front sides of the cutting knives 362 on both sides. When the blocking plate 383 moves downward, it can cooperate with the limit rods 386 plugged on both sides to move downward stably, and the limit rods 386 can be pressed against the stopper 386. The second spring 387 provided on the outer side of the lower end is squeezed, and when the blocking plate 383 moves downward along the inside of the rectangular groove 381, the exhaust port 384 provided on the upper and lower sides of the blocking plate 383 can be opposite to the filter screen 382 provided on the upper and lower sides of the rectangular groove 381 to achieve relative communication. In this way, when the electric energy meter body 1 is in operation, it can assist in achieving heat dissipation inside the flame retardant shell 31, strengthen the air circulation inside the flame retardant shell 31, reduce the problem of heat accumulation, and reduce the occurrence of spontaneous combustion of the terminal.

[0049] When the terminal spontaneously ignites and the temperature sensor 310 detects and controls the automatic upward movement of the cutting knife 362, the transmission plate 366 fixed on the front side of the cutting knife 362 will change its position, that is, move upward. When the position of the transmission plate 366 changes, the offset effect of the fixed block 385 provided on the outside of the blocking plate 383 will be released. In this way, the second spring 387 provided at the outer end of the limit rods 386 on both sides and in a compressed state will automatically push the blocking plate 383 upward, so that the blocking plate 383 moves upward to release the connection between the exhaust port 384 and the filter 382, that is, to block the filter 382. In this way, external air will be prevented from entering the flame retardant shell 31, so that the carbon dioxide gas ejected by cutting inside the storage capsule 39 can be efficiently flame retardant and extinguished, further reducing the probability of re-ignition and greatly enhancing the safety of the use of the electric energy meter.

[0050] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly secure anti-combustion electricity meter, comprising an electricity meter main body (1) and a numerical display area (2), the numerical display area (2) is installed on the front side of the electricity meter main body (1); It is characterized in that: It further includes a fire extinguishing and flame retardant device (3) provided at the lower end of the electricity meter main body (1), and the fire extinguishing and flame retardant device (3) includes a flame retardant shell (31) docked at the lower end of the electricity meter main body (1), a through hole (32) opened at the upper end of the flame retardant shell (31), a covering panel (33) installed on the front side of the flame retardant shell (31), a support frame (34) installed inside the flame retardant shell (31), a wiring component (35) provided at the upper end inside the support frame (34), cutting components (36) provided inside the left and right sides of the support frame (34), a trigger mechanism (37) built inside the upper end of the flame retardant shell (31), and the trigger mechanism (37) is docked with the two cutting components (36), a sealing component (38) installed inside one side of the covering panel (33), storage bags (39) built inside the upper ends of both sides of the flame retardant shell (31), and temperature sensors (310) installed at the upper ends of both sides inside the flame retardant shell (31).

2. The highly secure anti-combustion electricity meter according to claim 1, wherein: The wiring component (35) includes a fixing plate (351), a moving plate (352) and a locking shaft (353), the fixing plate (351) is fixedly connected to the upper end inside the support frame (34), a moving plate (352) is oppositely arranged on the front side of the fixing plate (351), locking shafts (353) are inserted into both sides of the moving plate (352), and the rear ends of the two locking shafts (353) are connected to the inside of the fixing plate (351).

3. The highly safe anti-combustion electric energy meter according to claim 1, wherein: The cutting component (36) includes an inner groove (361), a cutting knife (362), a convex block (363), a guide rod (364), a first spring (365) and a transmission plate (366), the inner groove (361) is opened on the left and right sides of the support frame (34), a cutting knife (362) is slidably installed inside the inner groove (361), a convex block (363) is fixedly provided on one side of the lower end of the cutting knife (362), both sides of the bottom of the cutting knife (362) are inserted into the guide rod (364), and first springs (365) are installed on the outer parts of the two guide rods (364), the transmission plate (366) is fixedly provided at the outer end of one side of the cutting knife (362), and the whole transmission plate (366) faces the covering panel (33).

4. The highly safe anti-combustion electricity meter according to claim 1, characterized in that: The trigger mechanism (37) includes a cylinder (371), a connecting plate (372), a first connecting shaft (373), a connecting rod (374), a second connecting shaft (375), a side plate (376), a connecting end (377), a rotating shaft (378), a docking plate (379), a vertical plate (3710) and a resisting block (3711). The cylinder (371) is arranged at the upper end inside the flame retardant shell (31). The bottom of the cylinder (371) is docked with the connecting plate (372). Both sides of the connecting plate (372) are movably inserted with the first connecting shaft (373). One side of the first connecting shaft (373) is fixedly connected with the connecting rod (374). One side of the connecting rod (374) is docked with the second connecting shaft (375). Both outer ends of the second connecting shaft (375) are provided with side plates (376). The bottoms of the two side plates (376) are fixed to the connecting end (377). The middle of the connecting end (377) is connected with the rotating shaft (378). One side of the rotating shaft (378) is inserted into the inside of the docking plate (379). The outer side of the middle of the rotating shaft (378) is connected with the vertical plate (3710). One side of the bottom of the vertical plate (3710) is fixedly connected with the resisting block (3711). The outer side of the resisting block (3711) abuts against the convex block (363).

5. The highly safe anti-combustion electricity meter according to claim 1, characterized in that: The blocking assembly (38) includes a rectangular groove (381), a filter screen (382), a blocking plate (383), an exhaust port (384), a fixing block (385), a limiting rod (386) and a second spring (387). The rectangular groove (381) is opened on the inner side of the covering panel (33). One side of the rectangular groove (381) is provided with the filter screen (382). The blocking plate (383) is slidably installed inside the rectangular groove (381). The exhaust port (384) is opened inside the blocking plate (383). Fixing blocks (385) are fixedly arranged on both outer ends of the blocking plate (383). Both sides of the blocking plate (383) are inserted with the limiting rod (386). The second spring (387) is arranged on the outer side of the lower end of the limiting rod (386). The outside of the fixing block (385) is in abutting contact with the transmission plate (366).

6. The highly secure anti-combustion electric energy meter according to claim 1, wherein: A round hole consistent with the through hole (32) opened at the upper end of the flame retardant shell (31) is opened at the bottom of the support frame (34). The four corners at the bottom of the support frame (34) are bolted to the flame retardant shell (31).

7. The highly secure anti-combustion electricity meter according to claim 2, characterized in that: The fixed plate (351) and the moving plate (352) are symmetrically arranged front and back. Semi-circular concave openings are integrally formed on the opposite surfaces of the fixed plate (351) and the moving plate (352).

8. The highly secure anti-combustion electric energy meter according to claim 4, characterized in that: Inclined grooves in opposite directions are opened on both inner sides of the connecting plate (372). The connecting plate (372) is connected with the first connecting shaft (373) through the inclined grooves opened on both sides.

9. The highly safe anti-combustion electricity meter according to claim 4, characterized in that: The first connecting shaft (373) is integrally horizontally arranged at the rear side of the upper end of the support frame (34). The first connecting shaft (373) is horizontally slidably docked with the rear side of the upper end inside the flame retardant shell (31).

10. The highly safe anti-combustion electricity meter according to claim 5, characterized in that: The exhaust ports (384) are symmetrically arranged up and down inside the blocking plate (383), and the number and size of the exhaust ports (384) are consistent with the filter screen (382) arranged on one side inside the rectangular groove (381).

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