One-way intelligent electric energy meter

Abstract

The one-way intelligent electric energy meter comprises an electronic lead seal arranged between a terminal box and an end cover, the end cover is rotationally connected to the terminal box through a rotating shaft, and a sensor used for monitoring the rotating angle of the rotating shaft is arranged in the terminal box; whether an electricity stealing behavior exists in the intelligent electric energy meter or not is judged through the electronic lead seal and the inductor, if the electronic lead seal is in an open state and the rotating angle of the rotating shaft monitored by the inductor exceeds a preset value, abnormal alarm information is sent to the monitoring center, and meanwhile the shielding assembly is controlled to be unfolded to wrap the working face of the terminal box; according to the invention, the electronic lead seal and the inductor cooperate with each other to determine whether the intelligent electric energy meter has an electricity stealing behavior, so that abnormal alarm information is sent to the monitoring center. When the electricity stealing behavior is monitored, the shielding assembly is controlled to be unfolded to wrap the working face of the terminal box, and the follow-up electricity stealing behavior is prevented. And meanwhile, the shielding assembly can be detached from the terminal box, so that the unused shielding assembly can be conveniently replaced subsequently.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, and specifically to a one-way smart electricity meter. Background Technology

[0002] A single-phase electricity meter, also known as a unidirectional electricity meter, is a metering device specifically designed to measure the flow of electrical energy in one direction. It is widely used in basic electricity consumption scenarios such as residential electricity use.

[0003] Currently, common electricity meter structures typically consist of two main parts: a terminal box and an end cover. These are connected and sealed with a lead seal for initial tamper protection. However, this traditional method of preventing electricity theft has significant limitations: firstly, relying solely on the lead seal to determine if theft has occurred is cumbersome, placing a burden on maintenance personnel's daily inspections; secondly, the lead seal itself is easily forged or replaced and is not easily visible to the naked eye, making electricity theft more covert and difficult to detect and address in a timely manner.

[0004] As a result, existing electricity meters are generally inadequate in preventing electricity theft, and have limited protection capabilities against deliberate tampering or technical electricity theft, which also brings real operation and maintenance challenges to power supply companies in electricity fee collection and metering management. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a unidirectional smart energy meter to solve the aforementioned problems.

[0006] This invention provides the following technical solution: A one-way smart energy meter includes a terminal box, an end cover, and an electronic lead seal disposed between the terminal box and the end cover. The end cover is rotatably connected to the terminal box via a rotating shaft, and the terminal box has a built-in sensor for monitoring the rotation angle of the rotating shaft. The system uses electronic seals and sensors to determine if there is any electricity theft in the smart meter. If the electronic seal is open or the rotation angle of the shaft monitored by the sensor exceeds the preset value, an abnormal alarm message is sent to the monitoring center. At the same time, the shielding component is unfolded to cover the working surface of the end box.

[0007] Preferably, the shielding assembly includes a housing, an airbag folded inside the housing, and a gas generator whose outlet communicates with the inner cavity of the airbag, wherein the gas generator has a built-in igniter.

[0008] Preferably, a sliding groove is provided on the working surface of the end button box, and a sliding seat is slidably connected to the sliding groove, with one side of the airbag connected to the sliding seat.

[0009] Preferably, the airbag is provided with at least a first cavity and a second cavity that correspond to each other. The first cavity and the second cavity are respectively filled with A glue and B glue. A pre-made tear strip is provided between the first cavity and the second cavity. The end of the pre-made tear strip away from the slide is connected to the slide.

[0010] Preferably, a protective membrane is provided on the open side of the housing, and the pre-fabricated tear strip is connected to the slide after passing through the protective membrane by a pull rope.

[0011] Preferably, the opening formed by tearing the prefabricated tear strip between the first and second cavities is positioned opposite to the direction of fluid flow within the airbag.

[0012] Preferably, a one-way buckle is provided on one side of the housing, and the housing is engaged with the working surface of the end button box through the one-way buckle. The end button box contains only a telescopic electromagnet for locking the one-way buckle.

[0013] Preferably, the working surface of the end-button box is provided with a wiring port that is plugged into the wiring terminal of the igniter.

[0014] Preferably, the slide block slides unidirectionally within the slide groove.

[0015] Preferably, the slide block is provided with a rack portion, and a rotating body is rotatably connected in the slide groove; one side of the rotating body is recessed to form a planar groove, and the other side is provided with a one-way tooth; the housing is provided with a rack, and the end of the rotating body is provided with a gear that meshes with the rack; when the housing is engaged with the working surface of the end button box, the meshing of the rack and the gear drives the rotating body, so that the one-way tooth of the rotating body meshes with the rack portion; the rotating body is kept facing the rack portion in its normal state by a return spring.

[0016] The present invention has the following beneficial technical effects: This invention uses an electronic seal and a sensor to determine whether a smart energy meter is involved in electricity theft, and then sends an abnormal alarm message to the monitoring center.

[0017] When electricity theft is detected, the control shielding component unfolds to cover the working surface of the terminal box, preventing further electricity theft. Simultaneously, the shielding component can be detached from the terminal box for easy replacement of unused components later. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram showing the fit between the housing, slide block, and slide groove of the present invention; Figure 3 This is a schematic diagram of the shielding component structure of the present invention; Figure 4This is a schematic diagram of the airbag and its internal structure of the present invention; Figure 5 This is a schematic diagram of the gas generator structure of the present invention; Figure 6 This is a schematic diagram of the cooperation between the slide and the rotating body of the present invention; Figure 7 for Figure 6 A magnified view of part A.

[0019] The attached figures are labeled as follows: 1. End cap; 2. End cover; 3. Shaft; 4. Housing; 41. Protective film; 42. One-way buckle; 43. Gear; 5. Slide; 51. Slide groove; 52. Rack section; 53. Rotating body; 531. Flat groove; 532. One-way tooth; 533. Gear; 6. Airbag; 61. First chamber; 62. Second chamber; 63. Pre-fabricated tear strip; 64. Pull rope; 7. Gas generator; 71. Ignition device; 72. Terminal block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: A one-way smart energy meter, referring to Figures 1-7 It includes an end cap 1, an end cover 2, and an electronic seal. Under normal conditions, the end cover 2 closes the end cap 1 and the electronic seal acts as a safety measure. Once the electronic seal is broken, an alarm will be triggered or an abnormal state will be recorded. This is existing technology.

[0022] A rotating shaft 3 is fixedly installed on the end cover 2. The end cover 2 is rotatably connected to the end button box 1 through the rotating shaft 3. The end button box 1 has a built-in sensor, which can be an angle sensor or a limit switch to monitor the rotation angle of the rotating shaft 3 in real time.

[0023] By combining sensors and electronic seals, the system can determine whether a smart energy meter is involved in electricity theft. If the electronic seal is open or the rotation angle of the rotating shaft 3 monitored by the sensor exceeds the preset value, an abnormal alarm message is sent to the monitoring center to avoid false alarms caused by damage to a single sensor or electronic seal.

[0024] It also includes a shielding assembly, which includes a housing 4, a slide 5, an airbag 6, a gas generator 7, and an igniter 71; One side of the housing 4 is provided with a one-way buckle 42 and a toothed rod 43. The working surface of the end button box 1 is provided with a slot that matches the one-way buckle 42 and a hole for the toothed rod 43 to be inserted. Under normal conditions, the airbag 6 is in a folded state and built into the housing 4. The opening side of the housing 4 is sealed and closed by a protective film 41. The protective film 41 is relatively thin and can be damaged by external force.

[0025] A gas generator 7 is also installed on one side of the housing 4. The gas generator 7 has an igniter 71 built in it, and the gas outlet of the gas generator 7 is connected to the gas bag 6. The working surface of the end box 1 is also provided with a wiring port. The wiring terminal 72 of the igniter 71 is plugged into the wiring port to provide power to the igniter 71.

[0026] The airbag 6 has multiple first cavities 61 and second cavities 62 inside, which correspond one-to-one. A pre-fabricated tear strip 63 is provided between the corresponding first cavities 61 and second cavities 62. The first cavities 61 and second cavities 62 are respectively filled with A glue and B glue. After mixing, A glue and B glue form a fast-curing polyurethane foam or fast-curing epoxy resin, etc., which can be cured in a short time. At the same time, the end of the pre-fabricated tear strip 63 away from the opening of the shell 4 is connected to the slide 5 by a pull rope 64 and passes through the protective film 41. The slide 5 is located opposite the opening of the shell 4.

[0027] Under normal conditions, the housing 4 is attached to the working surface of the end button box 1, and the one-way buckle 42 is engaged with the slot. The telescopic electromagnet inside the end button box 1 locks the one-way buckle 42 to prevent it from disengaging from the slot.

[0028] The working surface of the end button box 1 is also provided with a slide groove 51, and the slide block 5 can slide in the slide groove 51. A rotatable rotating body 53 is built into one side of the inner wall of the slide groove 51, and a return spring is provided on the outer sleeve of the rotating body 53. The return spring causes the rotating body 53 to rotate to a set angle under normal conditions. The outer peripheral surface of the rotating body 53 forms a planar groove 531 and a one-way tooth 532. The slide block 5 is provided with a rack part 52 (supported by a material with a certain elastic deformation ability), and a gear 533 is coaxially provided at the end of the rotating body 53. When the housing 4 is installed on the working surface of the end button box 1, the rack 43 is inserted into the hole and meshes with the gear 533, thereby driving the rotating body 53 to rotate by a set angle, so that the side of the rotating body 53 with the one-way tooth 532 rotates towards the slide groove 51, thereby realizing that the rack part 52 of the slide block 5 meshes with the rotating body 53 with the one-way tooth 532. The meshing of the rack part 52 with the one-way tooth 532 can realize that the slide block 5 can move unidirectionally in the slide groove 51 (away from the housing 4).

[0029] When the housing 4 is separated from the working surface of the end button box 1, the elastic force of the return spring drives the rotating body 53 to rotate and reset, so that the side of the rotating body 53 with the flat groove 531 rotates toward the slide groove 51. At this time, the rack part 52 is not restricted, so the slide 5 can move bidirectionally in the slide groove 51.

[0030] Working principle: When the sensor and electronic seal jointly determine that the smart energy meter is stealing electricity, they send an abnormal alarm message to the monitoring center. At the same time, they supply power to the igniter 71. The igniter 71 is powered on and triggers the gas generator 7. The gas generator 7 quickly generates gas and delivers it into the airbag 6. The airbag 6 inflates and expands, extending out from the opening side of the housing 4 (breaking through the protective membrane 41). During this process, it pushes the slide 5 to move unidirectionally in the slide groove 51, thereby guiding the unfolded airbag 6 and thus covering the area to be covered by the end button box working surface. As the slide 5 moves away from the opening side of the housing 4, the pre-made tear strip 63 is torn by the pull rope 64, thereby connecting the first cavity 61 and the second cavity 62. The connection between the first cavity 61 and the second cavity 62 causes the A glue and B glue inside to mix and solidify in a short time (seconds), thereby solidifying the deployed airbag 6. The solidified airbag 6 can prevent external personnel from operating on the area covered by it.

[0031] To avoid the airflow inside the airbag 6 having too much impact on the mixing of adhesive A and adhesive B, the opening formed by the pre-fabricated tear strip 63 at the connection between the first cavity 61 and the second cavity 62 is located on the leeward side, that is, opposite to the direction of airflow.

[0032] Since mixing of adhesive A and adhesive B takes a certain amount of time, the unidirectional movement of slide 5 within slide groove 51 can prevent it from being pushed back and reset during this time, thus failing to cover the specific area.

[0033] After receiving an abnormal alarm, the monitoring center dispatches staff for maintenance. The telescopic electromagnet inside can be remotely controlled to change its shape, so that the one-way buckle 42 can be manually pried out of the slot. Under the action of the return spring, the rotating body 53 returns to its original position, causing the one-way tooth 532 to disengage from the rack part 52. This can then drive the slide 5 to return to its original position near the opening side of the housing 4, separating the solidified airbag 6 from the slide 5.

[0034] Replace a new set of housing 4 and the components connected thereon, plug the terminal 72 of the igniter 71 into the wiring port, connect one end of all the pull ropes 64 to the slide 5, and change the shape of the telescopic electromagnet in the remote control terminal box 1 to lock the one-way buckle 42.

[0035] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A one-way smart energy meter, comprising a terminal box (1), an end cover (2), and an electronic lead seal disposed between the terminal box (1) and the end cover (2), wherein the end cover (2) is rotatably connected to the terminal box (1) via a rotating shaft (3), and the terminal box (1) has a built-in sensor for monitoring the rotation angle of the rotating shaft (3), characterized in that: The system uses electronic seals and sensors to determine whether the smart energy meter is stealing electricity. If the electronic seal is open and the rotation angle of the shaft (3) monitored by the sensor exceeds the preset value, an abnormal alarm message is sent to the monitoring center. At the same time, the shielding component is controlled to unfold and wrap the working surface of the end box (1) inside.

2. A unidirectional smart energy meter according to claim 1, characterized in that, The shielding assembly includes a housing (4), an airbag (6) folded inside the housing (4), and a gas generator (7) whose outlet communicates with the inner cavity of the airbag (6). The gas generator (7) has an igniter (71) built in.

3. A unidirectional smart energy meter according to claim 2, characterized in that, The working surface of the end button box (1) is provided with a sliding groove (51), and a sliding seat (5) is slidably connected on the sliding groove (51). One side of the airbag (6) is connected to the sliding seat (5).

4. A unidirectional smart energy meter according to claim 3, characterized in that, The airbag (6) is provided with at least a first cavity (61) and a second cavity (62) that correspond to each other. The first cavity (61) and the second cavity (62) are respectively filled with A glue and B glue. A pre-made tear strip (63) is provided between the first cavity (61) and the second cavity (62). The end of the pre-made tear strip (63) away from the slide (5) is connected to the slide (5).

5. A unidirectional smart energy meter according to claim 4, characterized in that, The shell (4) is provided with a protective film (41) on the open side, and the pre-made tear strip (63) is connected to the slide (5) after passing through the protective film (41) by a pull rope (64).

6. A unidirectional smart energy meter according to claim 4, characterized in that, The opening formed by the prefabricated tear strip (63) between the first cavity (61) and the second cavity (62) is set in the opposite direction to the fluid flow direction inside the airbag (6).

7. A unidirectional smart energy meter according to claim 3, characterized in that, One side of the housing (4) is provided with a one-way buckle (42). The housing (4) is engaged with the working surface of the end button box (1) through the one-way buckle (42). The end button box (1) contains only a telescopic electromagnet for locking the one-way buckle (42).

8. A unidirectional smart energy meter according to claim 7, characterized in that, The working surface of the end box (1) is provided with a wiring port that is connected to the wiring terminal (72) of the igniter (71).

9. A unidirectional smart energy meter according to claim 7, characterized in that, The slide block (5) slides unidirectionally within the slide groove (51).

10. A unidirectional smart energy meter according to claim 9, characterized in that, The slide block (5) is provided with a rack (52), and a rotating body (53) is rotatably connected in the slide groove (51); one side of the rotating body (53) is recessed to form a flat groove (531), and the other side is provided with a one-way tooth (533); the housing (4) is provided with a rack (43), and the end of the rotating body (53) is provided with a gear (533) that meshes with the rack (43); when the housing (4) is engaged with the working surface of the end button box (1), the meshing of the rack (43) and the gear (533) drives the rotating body (53), so that the one-way tooth (533) of the rotating body (53) meshes with the rack (52); the rotating body (53) is kept facing the rack (52) in the normal state by a return spring.

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