Distributed intelligent electric energy meter

Abstract

The invention discloses a distributed intelligent electric energy meter, which belongs to the field of electric energy meters, and comprises an electric energy meter main body, the electric energy meter main body is electrically connected with a signal concentrator, a digital display screen is fixedly arranged on the electric energy meter main body, and the outer surface of one side, close to a port plate, of a conductive column is slidably sleeved with a corrugated pipe which is communicated with an air bag main body. Thermal expansion materials are arranged in the corrugated pipe and the air bag body. Through the corrugated pipe and the internal thermal expansion material, when the internal temperature of the binding post exceeds the normal temperature application range of the electric energy meter main body, under the action of the thermal expansion material, the corrugated pipe extends and pushes the cable plug to move, so that the effect of separating the cable plug from the conductive post is realized, and the connection between a short-circuit line and the electric energy meter main body is cut off; the situation that the electric energy meter body is damaged after the internal temperature of the binding post exceeds the normal temperature application range of the electric energy meter body is avoided, and the use safety of the electric energy meter body is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of electric energy meters, and more specifically, to a distributed intelligent electric energy meter. Background Art

[0002] An electric energy meter is a device used to measure and record the power consumption, and is an important tool for electric power metering. It can accurately measure the power consumed by users within a certain period of time and transmit this data to users or power companies for calculating electricity bills.

[0003] For old-fashioned electric energy meters, meter readers need to go to the location of the electric energy meter to record the power consumption for billing. In order to facilitate meter readers to unify data, existing electric energy meters all adopt the technology of chip intelligent wireless transmission. The data in electric energy meters distributed in various places are transmitted to a computer platform for unified processing through wireless transmission. In construction sites, the wiring is processed after construction. During construction, due to excessive power consumption, short circuits may inevitably occur at some construction points. At this time, since the connection position between the electric energy meter and the short-circuited line passes through a huge current in a short time, the temperature at this connection position will rise. If the electric energy meter does not have a self-protection function and the line is short-circuited for a long time, the temperature at the connection point between the electric energy meter and this position may rise beyond the safe range, resulting in damage to the internal terminal posts of the electric energy meter and causing unnecessary losses. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a distributed intelligent electric energy meter.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A distributed intelligent electric energy meter includes an electric energy meter main body, the electric energy meter main body is electrically connected to a signal concentrator, a digital display screen is fixedly arranged on the electric energy meter main body, a battery panel is electrically connected to the electric energy meter main body, a port board is fixedly connected to the electric energy meter main body, a plurality of ports are arranged on the port board, the ports are located above the wiring block, a wiring block is fixedly connected to the outer surface of the port board, a plurality of terminal posts are fixedly arranged in the wiring block, the wiring block is electrically connected to the port board and the battery panel, a slot is opened inside the terminal post, a conductive column is arranged in the slot, the conductive column is fixedly connected to the outer surface of the port board and is electrically connected to the port board, an airbag main body is fixedly sleeved on the outer surface of the conductive column close to the port board, a corrugated pipe is slidably sleeved on the outer surface of the conductive column close to the port board, the corrugated pipe is communicated with the airbag main body, and a thermal expansion material is arranged inside the corrugated pipe and the airbag main body.

[0007] Further, a plurality of groups of first arc plates are arranged in the slot, and the plurality of groups of first arc plates are in contact with the outer surface of the airbag body. One side of each group of first arc plates away from the port plate is fixedly connected to a guide plate, and one side of each group of guide plates away from the first arc plate is fixedly connected to a second arc plate. A rotating shaft is fixedly sleeved on each group of guide plates, and both ends of each group of rotating shafts penetrate through the guide plate and are rotatably connected to the inner wall of the slot.

[0008] Further, a magnetic attraction plate is fixedly connected to the outer surface of the bellows on the side away from the airbag body, and the magnetic attraction plate is slidably sleeved on the outer surface of the conductive column.

[0009] Further, a heat conduction component is fixedly sleeved on the outer surface of the magnetic attraction plate. A plurality of groups of tension springs are arranged in the slot at equal circumferential intervals. One end of each tension spring is fixedly connected to the outer surface of the port plate, and the other end of each tension spring is fixedly connected to the heat conduction component.

[0010] Further, the heat conduction component includes a heat conduction ring fixedly sleeved on the outer surface of the magnetic attraction plate. A plurality of groups of safety blocks are fixedly arranged on the heat conduction ring at equal circumferential intervals, and each group of safety blocks is fixedly connected to one of the plurality of groups of tension springs one by one.

[0011] Further, the plurality of groups of first arc plates and second arc plates, and the plurality of groups of guide plates are in a ring plate shape. The inner diameter of each group of second arc plates is smaller than the inner diameter of the guide plates.

[0012] Further, the second arc plate is made of soft rubber, and there is a space between the plurality of groups of first arc plates, second arc plates and the inner wall of the slot.

[0013] Further, the material of each group of safety blocks is lead-antimony alloy. There is a gap between the plurality of groups of first arc plates, and each tension spring is located in the gap between adjacent two groups of first arc plates.

[0014] Further, the outer surface of the airbag body is in contact with the inner surfaces of the plurality of groups of first arc plates in the static state, and when the airbag body reaches the maximum expansion amount, the outer surfaces of the plurality of groups of first arc plates can be in contact with the inner wall of the slot.

[0015] Further, the length of the conductive column is less than the length of the slot, and the sizes of the plurality of groups of guide plates are the same as the sizes of the cables inserted into the slot.

[0016] Compared with the prior art, the beneficial effects of the present invention:

[0017] (1) Through the bellows and the internal thermal expansion material provided in the present invention, when the temperature inside the terminal exceeds the normal temperature applicable range of the main body of the electricity meter, under the action of the thermal expansion material, the bellows elongates, pushing against the cable plug to move, achieving the effect of separating the cable plug from the conductive column, disconnecting the short - circuit line from the main body of the electricity meter, and avoiding the situation of damage to the main body of the electricity meter caused by the temperature inside the terminal exceeding the normal temperature applicable range, thus ensuring the safety of the main body of the electricity meter during use.

[0018] (2) Through the bellows, the air - bag main body, multiple groups of first arc plates, the guide plate and the second arc plate provided in the present invention, the function of fixing the wire ends of the circuit is added to the original terminal. When the wire ends of the circuit are inserted into the terminal, the wire ends will be fixed and clamped by multiple groups of first arc plates. When the wire ends make a pulling - out movement, multiple groups of first arc plates will loosen the wire ends, facilitating the purpose of being inserted and pulled out as the construction progresses on the construction site. It is more convenient and fast to use, reducing the friction between the first arc plates and the wire ends during pulling - out, so as to improve the service life of the first arc plates as the clamping and fixing components for the wire ends of the circuit.

[0019] (3) Through the magnetic attraction plate and the tension spring provided in the present invention, the wire ends of the circuit are inserted back onto the conductive column again by the magnetic attraction plate to continue measuring the current of the circuit. It can automatically cut off the power and cool down when the circuit is overheated, and when the circuit cooling is completed, it can automatically connect the circuit again, enabling the main body of the electricity meter to have better safety during operation, and without the need for staff to reconnect after disconnecting the circuit, it can also be automatically connected.

[0020] (4) Through the heat - conducting component provided in the present invention, when a short - circuit occurs between the wire ends of the circuit and the terminal inside the main body of the electricity meter, the generated heat will be transferred to the fuse block through the magnetic attraction plate and the heat - conducting ring. The high temperature will melt each fuse block in an instant. Due to the breakage of the connection part of the tension spring, even if the thermal expansion material shrinks, at this time the bellows will not shrink, and will no longer connect the short - circuit line to the conductive column through the magnetic attraction plate, which can effectively ensure the safety of the main body of the electricity meter when a short - circuit problem occurs in the terminal of the main body of the electricity meter, avoiding the possibility of all terminals being short - circuited and burned out due to a short - circuit in one terminal, and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the structural schematic diagram of the present invention;

[0022] Figure 2 is the front - view structural schematic diagram of the terminal of the present invention;

[0023] Figure 3 is the front - view sectional view of the terminal of the present invention;

[0024] Figure 4Explosion diagram of the terminal and internal structure of the present invention;

[0025] Figure 5 Side sectional view of the terminal and internal structure of the present invention;

[0026] Figure 6 For the present invention Figure 4 Enlarged view of the structure at position A in

[0027] Figure 7 For the present invention Figure 4 Enlarged view of the structure at position B in

[0028] Explanation of reference numerals in the figure:

[0029] 1. Electric energy meter main body; 2. Signal concentrator; 3. Digital display screen; 4. Battery panel; 5. Port board; 6. Wiring block; 7. Terminal; 8. Slot; 9. Conductive column; 11. Airbag main body; 12. Bellows; 13. Magnetic attraction plate; 14. First arc plate; 15. Guide plate; 16. Second arc plate; 17. Rotating shaft; 18. Heat conduction component; 19. Tensile spring; 20. Heat conduction ring; 21. Insurance block. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 7 , a distributed intelligent electric energy meter, including an electric energy meter main body 1, the electric energy meter main body 1 is electrically connected to a signal concentrator 2, a digital display screen 3 is fixedly arranged on the electric energy meter main body 1, a battery panel 4 is electrically connected to the electric energy meter main body 1, a port board 5 is fixedly connected to the electric energy meter main body 1, a plurality of ports are arranged on the port board 5, the ports are located above the wiring block 6, the outer surface of the port board 5 is fixedly connected to the wiring block 6, a plurality of terminals 7 are fixedly arranged in the wiring block 6, the wiring block 6 is electrically connected to the port board 5 and the battery panel 4, a slot 8 is opened inside the terminal 7, a conductive column 9 is arranged in the slot 8, the conductive column 9 is fixedly connected to the outer surface of the port board 5 and is electrically connected to the port board 5, an airbag main body 11 is fixedly sleeved on the outer surface of the conductive column 9 close to the port board 5, a bellows 12 is slidably sleeved on the outer surface of the conductive column 9 close to the port board 5, the bellows 12 is communicated with the airbag main body 11, and a thermal expansion material is arranged inside the bellows 12 and the airbag main body 11.

[0032] The length of the conductive post 9 is less than the length of the slot 8, and the sizes of multiple groups of guide plates 15 are the same as the sizes of the cables inserted into the slot 8.

[0033] When using a distributed intelligent electricity meter to measure the power consumption, first electrically connect the electricity meter main body 1 to the signal concentrator 2, and then send the real-time power consumption to the computer platform through the wireless signal transmitter in the signal concentrator 2 for statistics. When the internal temperature of the terminal post 7 exceeds the normal temperature applicable range of the electricity meter main body 1, the temperature of the part of the electricity meter main body 1 connected to the line will gradually increase accordingly, and the temperature of the corresponding conductive post 9 part will increase. At this time, the thermal expansion material in the airbag main body 11 will expand due to heat. First, the thermal expansion material will squeeze the airbag main body 11 until the airbag main body 11 can no longer expand, and then the thermal expansion material will continue to squeeze the corrugated pipe 12, and the corrugated pipe 12 will elongate, thereby pushing the cable plug as Figure 4 shown in the figure to move leftward along the conductive post 9, achieving the effect of separating the cable plug from the conductive post 9, disconnecting the connection between the short-circuit line and the electricity meter main body 1, and avoiding the situation that the internal temperature of the terminal post 7 exceeds the normal temperature applicable range of the electricity meter main body 1 and causing damage to the electricity meter main body 1, ensuring the safety of the electricity meter main body 1 during use;

[0034] It should be particularly noted here that: the thermal expansion material uses expanded polystyrene particles. When the temperature exceeds 70 degrees Celsius, under the action of the thermal expansion material, the line plug will separate from the conductive post 9, and the safe operating range of the electricity meter main body 1 is: -30 degrees Celsius to 70 degrees Celsius.

[0035] As Figures 2 to 5 and Figure 7 shown, multiple groups of first arc plates 14 are arranged in the slot 8. The multiple groups of first arc plates 14 are in contact with the outer surface of the airbag main body 11. One side of each group of first arc plates 14 away from the port plate 5 is fixedly connected with a guide plate 15. One side of each group of guide plates 15 away from the first arc plate 14 is fixedly connected with a second arc plate 16. Each group of guide plates 15 is fixedly sleeved with a rotating shaft 17. Both ends of each group of rotating shafts 17 penetrate through the guide plate 15 and are rotatably connected to the inner wall of the slot 8.

[0036] The multiple groups of first arc plates 14 and second arc plates 16, and the multiple groups of guide plates 15 are in an annular plate shape. The inner diameter size of each group of second arc plates 16 is smaller than the inner diameter size of the guide plate 15.

[0037] The second arc plate 16 is made of soft rubber. There is a space between the multiple groups of first arc plates 14, second arc plates 16 and guide plates 15 and the inner wall of the slot 8.

[0038] The outer surface of the airbag main body 11 is in contact with the inner surface of the multiple groups of first arc plates 14 in the static state, and when the airbag main body 11 reaches the maximum expansion amount, it can make the outer surface of the multiple groups of first arc plates 14 contact with the inner wall of the slot 8.

[0039] When the line plug is inserted into the slot 8, the line plug will first be pushed along the direction of the guide plate 15 from the outside of the slot 8 to the inside under the action of the guide plate 15, so that the line plug is inserted into the conductive column 9. Since the line plug gradually moves from the outside of the slot 8 to the inside of the slot 8 and squeezes the bellows 12, the bellows 12 is squeezed, and the expanded particles inside will move to the airbag body 11 and fill the airbag body 11, thereby causing the airbag body 11 to expand. After the airbag body 11 expands, it will squeeze the first arc plate 14 in contact with the airbag body 11, thereby causing each group of first arc plates 14 to separate from each other and gradually approach the inner wall of the slot 8. Under the action of the rotating shaft 17, through the principle of levers, it can be seen that each group of second arc plates 16 will approach each other and clamp the line, making the line head more secure when inserted into the wiring block 6, especially on the construction site, where it is necessary to replace the smart electric energy following the construction project. The circuit connected to the meter will cause a gap between the circuit plug and the slot 8 due to friction during the process of repeatedly inserting and unplugging the circuit plug, and the circuit plug may become loose after being inserted into the smart energy meter, which will lead to inaccurate measured data and circuit breakage. Through the bellows 12, the airbag body 11, multiple groups of first arc plates 14, the guide plate 15 and the second arc plate 16, a function for fixing the circuit head is added to the original terminal 7. When the circuit head is inserted into the terminal 7, the circuit head will be fixed and clamped by the multiple groups of first arc plates 14. When the circuit head is pulled out, the multiple groups of first arc plates 14 will loosen the circuit head, which is convenient for the purpose of plugging and unplugging as the construction progresses on the construction site. It is more convenient and quick to use, and the friction between the first arc plate 14 and the circuit head when being pulled out is reduced, so as to increase the service life of the first arc plate 14 as a clamping and fixing circuit head.

[0040] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the outer surface of the bellows 12 on one side away from the airbag body 11 is fixedly connected to the magnetic attraction plate 13 , and the magnetic attraction plate 13 is slidably sleeved on the outer surface of the conductive column 9 .

[0041] The outer surface of the magnetic attraction plate 13 is fixedly sleeved with a heat-conducting component 18, and a plurality of groups of tension springs 19 are equidistantly arranged circumferentially in the slot 8, one end of the tension spring 19 is fixedly connected to the outer surface of the port plate 5, and the other end of the tension spring 19 is fixedly connected to the heat-conducting component 18.

[0042] When the line lead is inserted into the slot 8 and fixedly clamped by the first arc plate 14, the line lead and the magnetic plate 13 are in contact with each other, and the magnetic plate 13 generates suction force on the line lead. By fixing the end points of the line lead, the line lead is fixed together with multiple sets of first arc plates 14 to ensure that the line lead inserted into the slot 8 can be firmly in the slot 8 under the condition of repeated plugging and unplugging of the line lead on the construction site, thereby reducing shaking and separation from the conductive column 9.

[0043] When the line consumes too much electricity, the amount of current that continues to pass through the electric energy meter body 1 is too large, resulting in a lot of heat. Continuous use may cause the connection between the line and the electric energy meter body 1 to overheat and short-circuit, thereby damaging the electric energy meter body 1. When the thermal expansion material inside the bellows 12 absorbs heat, it can play a role in cooling down. At the same time, through the expansion of the thermal expansion material, the bellows 12 is stretched, pushing the line head to move in the slot 8 and separate from the conductive column 9, achieving the effect of power off, and no longer allowing the line current to pass through the electric energy meter body 1, thereby ensuring the normal operation of the electric energy meter body 1. In use, after this process, the tension spring 19 is in a stretched state. When the temperature drops, the thermal expansion material will shrink again, causing the bellows 12 to shrink. At the same time, with the action of the tension spring 19 in a stretched state, the line head is inserted back into the conductive column 9 through the magnetic plate 13, and the current measurement of the line continues. When the line is overheated, it can automatically cut off the power and cool down. When the line is cooled down, it can automatically connect the line, which can make the electric energy meter body 1 have better safety during operation. After the line is disconnected, there is no need for the staff to re-plug it, and it can also be automatically plugged in.

[0044] like Figures 3 to 6 As shown, the heat-conducting assembly 18 includes a heat-conducting ring 20 fixedly mounted on the outer surface of the magnetic attraction plate 13 , and a plurality of groups of safety blocks 21 are fixedly arranged at equal intervals on the circumference of the heat-conducting ring 20 , and each group of safety blocks 21 is fixedly connected to a plurality of groups of tension springs 19 one by one.

[0045] The material of each set of safety blocks 21 is lead-antimony alloy. Gaps are left between the multiple sets of first arc plates 14 , and each set of tension springs 19 is located in the gaps between two adjacent sets of first arc plates 14 .

[0046] When a short circuit occurs between the wire end of the circuit and the terminal 7 inside the electricity meter main body 1, since a large amount of current will pass through the circuit during a short circuit, the heat between the wire end of the circuit and the conductive column 9 in the terminal 7 will be instantaneously increased. The heat generated at this time will be transferred to the fuse block 21 through the magnetic attraction plate 13 and the heat conduction ring 20. The high temperature will melt each group of fuse blocks 21 in an instant. The heat expansion material absorbs heat and causes the bellows 12 to elongate, and separates the conductive column 9 from the wire end of the circuit, thus achieving the effect of breaking the circuit. When the temperature inside the electricity meter drops, since the connection part of the tension spring 19 is broken, even if the heat expansion material shrinks, the bellows 12 will not shrink at this time, and will no longer connect the short - circuited circuit to the conductive column 9 through the magnetic attraction plate 13, which can effectively ensure the safety of the electricity meter main body 1 when a short - circuit problem occurs at the terminal 7 of the electricity meter main body 1, avoid the possibility that a short - circuit of one terminal 7 causes all terminal 7s to be short - circuited and burned out, and reduce losses;

[0047] When a short - circuit problem occurs, since the bellows 12 elongates to separate the wire end of the circuit from the conductive column 9, under the fixing action of the first arc plate 14 and the magnetic attraction plate 13, the wire end of the circuit that finally separates from the conductive column 9 still remains in the slot 8, avoiding the short - circuited wire end leaving the slot 8 and grounding due to its own gravity, resulting in dangerous events of other electric shocks;

[0048] It should be particularly noted here that: the heat conduction ring 20 is a copper ring, and the fuse block 21 is made of lead - antimony alloy, which is the same production material as the fuse wire.

[0049] Usage method: When using a distributed intelligent electricity meter to measure the power consumption, first electrically connect the electricity meter main body 1 with the signal concentrator 2, and then send the real - time power consumption to the computer platform through the wireless signal transmitter in the signal concentrator 2 for statistics. When the connection between the wire plugged into the electricity meter main body 1 and other wires is short - circuited, a large amount of current will pass through this circuit at the same time, and the temperature of the part of the electricity meter main body 1 connected to the circuit will gradually increase accordingly, and the temperature of the corresponding conductive column 9 part will increase. At this time, the heat expansion material in the airbag main body 11 will expand due to heat. First, the heat expansion material will squeeze the airbag main body 11 until the airbag main body 11 can no longer expand. Then, the heat expansion material will continue to squeeze the bellows 12, and the bellows 12 will elongate, thereby pushing the cable plug as Figure 4 shown in to move from right to left along the conductive column 9, achieving the effect of separating the cable plug from the conductive column 9, disconnecting the short - circuited circuit from the electricity meter main body 1, and avoiding the situation that the short - circuited circuit causes the temperature to rise due to the short circuit and damages the electricity meter main body 1, ensuring the safety of the electricity meter main body 1 during use.

[0050] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A distributed intelligent electricity meter, comprising an electricity meter main body (1), the electricity meter main body (1) is electrically connected to a signal concentrator (2), a digital display screen (3) is fixedly arranged on the electricity meter main body (1), a battery panel (4) is electrically connected to the electricity meter main body (1), a port board (5) is fixedly connected to the electricity meter main body (1), a plurality of ports are arranged on the port board (5), the ports are located above a wiring block (6), a wiring block (6) is fixedly connected to the outer surface of the port board (5), a plurality of wiring posts (7) are fixedly arranged in the wiring block (6), the wiring block (6) is electrically connected to the port board (5) and the battery panel (4), and it is characterized in that: The terminal (7) is internally provided with a slot (8), a conductive post (9) is arranged in the slot (8), the conductive post (9) is fixedly connected to the outer surface of the port plate (5) and is electrically connected to the port plate (5). An airbag body (11) is fixedly sleeved on the outer surface of the conductive post (9) close to the port plate (5). A corrugated pipe (12) is slidably sleeved on the outer surface of the conductive post (9) close to the port plate (5). The corrugated pipe (12) is communicated with the airbag body (11). A thermal expansion material is arranged inside the corrugated pipe (12) and the airbag body (11).

2. The distributed intelligent electricity meter according to claim 1, characterized in that: Multiple groups of first arc plates (14) are arranged in the slot (8). The multiple groups of first arc plates (14) are in contact with the outer surface of the airbag body (11). A guide plate (15) is fixedly connected to the side of each group of first arc plates (14) away from the port plate (5). A second arc plate (16) is fixedly connected to the side of each group of guide plates (15) away from the first arc plate (14). A rotating shaft (17) is fixedly sleeved on each group of guide plates (15). Both ends of each group of rotating shafts (17) penetrate through the guide plate (15) and are rotatably connected to the inner wall of the slot (8).

3. The distributed intelligent electricity meter according to claim 2, characterized in that: A magnetic attraction plate (13) is fixedly connected to the outer surface of the corrugated pipe (12) away from the airbag body (11). The magnetic attraction plate (13) is slidably sleeved on the outer surface of the conductive post (9).

4. The distributed intelligent electric energy meter according to claim 3, characterized in that: A heat conduction component (18) is fixedly sleeved on the outer surface of the magnetic attraction plate (13). Multiple groups of tension springs (19) are arranged in the slot (8) at equal circumferential intervals. One end of each tension spring (19) is fixedly connected to the outer surface of the port plate (5), and the other end of each tension spring (19) is fixedly connected to the heat conduction component (18).

5. A distributed intelligent electricity meter according to claim 4, characterized in that: The heat conduction component (18) includes a heat conduction ring (20) fixedly sleeved on the outer surface of the magnetic attraction plate (13). Multiple groups of safety blocks (21) are fixedly arranged on the heat conduction ring (20) at equal circumferential intervals. Each group of safety blocks (21) is fixedly connected to one of the multiple groups of tension springs (19) one by one.

6. A distributed intelligent electricity meter according to claim 5, characterized in that: Multiple groups of first arc plates (14) and second arc plates (16). The multiple groups of guide plates (15) are in the shape of an annular plate. The inner diameter dimension of each group of second arc plates (16) is smaller than the inner diameter dimension of the guide plate (15).

7. A distributed intelligent electric energy meter according to claim 6, characterized in that: The second arc plate (16) is made of soft rubber. A space is left between the multiple groups of first arc plates (14), second arc plates (16) and the guide plates (15) and the inner wall of the slot (8).

8. A distributed intelligent electricity meter according to claim 7, characterized in that: The material of each group of safety blocks (21) is lead - antimony alloy. A gap is left between the multiple groups of first arc plates (14), and each tension spring (19) is located in the gap between two adjacent groups of first arc plates (14).

9. A distributed intelligent electricity meter according to claim 8, characterized in that: The outer surface of the airbag body (11) is in contact with the inner surfaces of the multiple groups of first arc plates (14) in the static state. When the airbag body (11) reaches the maximum expansion amount, the outer surfaces of the multiple groups of first arc plates (14) can be in contact with the inner wall of the slot (8).

10. A distributed intelligent electricity meter according to claim 9, characterized in that: The length of the conductive post (9) is smaller than the length of the slot (8). The size of the multiple groups of guide plates (15) is the same as the size of the cable inserted into the slot (8).

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