Electric energy meter with metering module convenient to replace

Abstract

The application discloses an electric energy meter convenient for replacing a metering module, and belongs to the technical field of electric energy meters. The electric energy meter comprises an electric meter rear shell, an electric meter front shell which is detachably arranged on one side of the electric meter rear shell, and a circuit board which is fixedly arranged in the electric meter rear shell and is provided with an elastic power connection column on the side close to the electric meter front shell. A metering module is detachably arranged on the inner side of the electric meter front shell, and the side of the metering module corresponds to the elastic power connection column and is provided with a matching hole, and the inner side of the matching hole is provided with a power connection terminal. The metering module is installed on the inner side of the electric meter front shell, and after the electric meter front shell and the electric meter rear shell are detached from each other, the metering module is quickly taken out from the inner side of the electric meter front shell by sliding from bottom to top, and the metering module can be conveniently and individually detached and replaced after the electric meter front shell is opened. Therefore, the problem that the metering module of the electric energy meter is inconvenient to detach and replace is effectively solved, and the metering module of the electric energy meter is conveniently detached and replaced.

Description

Technical Field

[0001] This application relates to the field of electricity meter technology, and more specifically, to an electricity meter with an easily replaceable metering module. Background Technology

[0002] With the rapid advancement of smart grid construction, the need for technological iteration of electricity meters, as core metering devices at the end of the power system, is becoming increasingly urgent. Traditional electricity meters adopt an integrated design, with the metering module and meter body fixed into a non-removable structure, requiring complete replacement during maintenance, which increases operation and maintenance costs and wastes resources. With the IR46 international standard requiring physical isolation between metering and non-metering functions, and the demand for scalability in new power systems, existing technologies have revealed three major pain points: first, the fixed hardware makes it impossible to repair separately after metering accuracy deteriorates; second, software upgrades require factory return processing, affecting the grid's intelligent response speed; and third, functional modules cannot be expanded as needed, making it difficult to adapt to new application scenarios such as distributed energy resources. These problems restrict the flexibility of the power system and the efficiency of equipment lifecycle management, necessitating modular design to enable rapid replacement and functional reconfiguration of metering components.

[0003] In related technologies, to facilitate the expansion of the functions of electricity meters, for example, the patent with prior art publication number CN206657039U provides a modular electricity meter. This electricity meter has a module receiving slot, which allows users to select the corresponding module according to their needs and enables quick replacement of the module when it malfunctions. Users or manufacturers can also select the required module and / or IC card slot according to different needs. This structure provides users with diversified choices at the lowest cost and improves versatility.

[0004] While the existing technical solutions mentioned above solve the problem of easily expanding the functions required by the electricity meter, the metering module of the electricity meter, as a metering unit, needs to be installed in isolation from other functional modules. When the metering module is disassembled for maintenance, the front shell of the electricity meter needs to be disassembled and opened before the metering module is disassembled from the rear shell. This operation process is cumbersome and inconvenient for later maintenance and replacement of the metering module of the electricity meter.

[0005] In view of this, we propose an energy meter that facilitates the replacement of metering modules. Utility Model Content

[0006] The purpose of this application is to provide an energy meter that facilitates the replacement of the metering module, which can effectively solve the problem in the prior art that it is inconvenient to disassemble and replace the metering module of the energy meter, and achieve the effect of facilitating the disassembly and replacement of the metering module of the energy meter.

[0007] This application provides an energy meter that facilitates the replacement of metering modules, including:

[0008] The back cover of the electricity meter;

[0009] The front cover of the meter is detachably mounted on one side of the rear cover of the meter;

[0010] The circuit board is fixedly installed inside the rear casing of the meter, and a flexible power terminal is provided on the side of the circuit board near the front casing of the meter.

[0011] The metering module is detachably installed inside the front shell of the meter. A mating hole is provided on one side of the metering module corresponding to the elastic power connection post, and a power connection terminal is provided inside the mating hole.

[0012] The meter has a receiving slot on the inner side of the front casing for placing the metering module. The metering module is slidably disposed on the inner side of the receiving slot from top to bottom. A transparent observation window is provided on the outer side of the front casing corresponding to the display end of the metering module.

[0013] As an optional solution to the technical solution of this application, pins are fixedly provided at the four corners of the front shell of the meter near the rear shell of the meter, and clamping openings are provided on the outer side of each pin.

[0014] The four corners of the outer side of the rear casing of the meter are provided with arc-shaped grooves, which cooperate with the pins. The two sides of the rear casing of the meter are provided with clamping plates, which are driven by external force and cooperate with the clamping jaws to fix the front casing and the rear casing of the meter in place.

[0015] As an optional solution to the technical solution of this application, side plates are fixedly provided on the outer side of the clamping plate, and sliding plates are fixedly provided on the side of the side plates near the rear shell of the meter. The sliding plates are slidably provided on both sides of the rear shell of the meter. A bidirectional screw is rotatably provided inside the rear shell of the meter. The two ends of the bidirectional screw pass through both sides of the rear shell of the meter. A knob is fixedly provided at both ends of the bidirectional screw. The threads of the bidirectional screw are provided on the inner side of the side plate.

[0016] As an optional solution to the technical solution in this application, an expansion socket and a fixed partition are fixedly provided on the side of the circuit board near the front shell of the meter, a wire-passing block is fixedly provided on the bottom of the rear shell of the meter corresponding to the connector, and a mounting plate is fixedly provided on the side of the rear shell of the meter away from the front shell of the meter.

[0017] As an optional solution to the technical solution in this application, a fixed partition is also fixedly provided on the side of the circuit board near the front shell of the meter, and the fixed partition is located between the flexible terminal and the expansion socket;

[0018] A sealing ring is fixedly installed on the side of the front shell of the meter near the rear shell of the meter. The sealing ring is located on the inner side of the rear shell of the meter. A shelf is fixedly installed on the inner side of the front shell of the meter corresponding to the fixed partition, which is used to isolate and install the metering module.

[0019] As an optional solution to the technical solution of this application, slide rails are fixedly provided on both sides inside the receiving groove, and a base plate is fixedly provided at the bottom of the receiving groove;

[0020] The metering module has a groove on the outside corresponding to the slide rail, and the metering module slides with the slide rail through the groove.

[0021] As an optional solution to the technical solution of this application, a slide rail is provided on the inner side of the shelf, and a movable partition is slidably arranged on the inner side of the slide rail, with the movable partition located at the top of the metering module.

[0022] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0023] (1) This application adopts the method of installing the metering module inside the front shell of the meter. After the front shell and the rear shell of the meter are disassembled, the metering module can be quickly slid out from the inside of the front shell of the meter from bottom to top. This makes it convenient to disassemble and replace the metering module separately after the front shell of the meter is opened. Therefore, it effectively solves the problem of the inconvenience of disassembling and replacing the metering module of the electricity meter, and thus realizes the convenience of disassembling and replacing the metering module of the electricity meter.

[0024] (2) This application provides flexible electrical terminals on the outside of the circuit board so that when the front and rear covers of the meter are installed, the metering module can be automatically electrically connected to the circuit board inside the rear cover of the meter. An expansion socket is provided on the outside of the circuit board to facilitate the installation of other functional components, so as to expand the functions of the electricity meter.

[0025] (3) This application isolates the flexible power connection post and the expansion socket by setting a fixed partition on the outside of the circuit board. After the front shell and the rear shell of the meter are installed, the metering module is isolated by the inner layer of the front shell of the meter in conjunction with the fixed partition. This allows the metering module to be automatically physically isolated from the functional module above the fixed partition after installation, so as to meet the requirements of the IR46 international standard. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an energy meter that facilitates the replacement of metering modules, as disclosed in a preferred embodiment of this application.

[0027] Figure 2 This is an exploded view of an energy meter with a replaceable metering module, as disclosed in a preferred embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the assembly structure of the front shell and metering module of an energy meter that facilitates the replacement of the metering module, as disclosed in a preferred embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the internal structure of the front casing of an energy meter that facilitates the replacement of metering modules, as disclosed in a preferred embodiment of this application.

[0030] Explanation of the labels in the diagram:

[0031] 1. Meter back cover; 11. Mounting plate; 12. Wire threading block; 13. Arc groove; 14. Clamping plate; 15. Side plate; 16. Slide plate; 17. Double-acting screw; 18. Knob;

[0032] 2. Meter front casing; 21. Receiving slot; 22. Transparent observation window; 23. Pin; 24. Clamp; 25. Sealing ring; 26. Base plate; 27. Shelf; 28. Slide rail; 29. ​​Movable partition; 210. Slide rail;

[0033] 3. Circuit board; 31. Flexible power connector; 32. Extension socket; 33. Fixed partition; 34. Connector;

[0034] 4. Metering module; 41. Mating hole; 42. Slide groove. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figures 1-4 This application discloses an energy meter that facilitates the replacement of the metering module, including a rear housing 1, a front housing 2, a circuit board 3, and a metering module 4. The front housing 2 is detachably disposed on one side of the rear housing 1. The circuit board 3 is fixedly disposed inside the rear housing 1, and a flexible contact post 31 is provided on the side of the circuit board 3 near the front housing 2. The metering module 4 is detachably disposed inside the front housing 2, and a mating hole 41 is provided on one side of the metering module 4 corresponding to the flexible contact post 31. A power terminal is provided inside the mating hole 41. The front housing 2 has a receiving groove 21 for placing the metering module 4, and the metering module 4 slides from top to bottom inside the receiving groove 21. A transparent observation window 22 is provided on the outer side of the front housing 2 corresponding to the display end of the metering module 4.

[0037] When disassembling the metering module 4, the front housing 2 and the rear housing 1 of the meter are separated, causing the metering module 4 inside the front housing 2 to detach from the rear housing 1. At this time, the metering module 4 is located inside the receiving groove 21 on the inner side of the front housing 2, and can be removed by sliding from bottom to top, so that the metering module 4 can be disassembled separately. When reassembling, the metering module 4 is inserted into the receiving groove 21 from top to bottom, and then the front housing 2 and the rear housing 1 are fixed. During the process of fixing the front housing 2 and the rear housing 1, the front housing 2 causes the metering module 4 to come into contact with the elastic terminal 31 inside the rear housing 1, so that the metering module 4 is electrically connected to the circuit board 3, so that the metering module 4 can be connected to the functional circuit of the circuit board 3. During the daily use of the electricity meter, the metering information of the metering module 4 can be observed through the transparent observation window 22 on the outside of the front housing 2.

[0038] Reference Figure 1 and Figure 2 Pins 23 are fixedly installed at the four corners of the front housing 2 of the meter near the rear housing 1 of the meter. Clamping slots 24 are opened on the outside of each pin 23. Arc grooves 13 are provided at the four corners of the outer side of the rear housing 1 of the meter. The arc grooves 13 cooperate with the pins 23. Clamping plates 14 are provided on both sides of the rear housing 1 of the meter. The clamping plates 14 are driven by external force and clamped with the clamping slots 24 to fix the front housing 2 of the meter and the rear housing 1 of the meter.

[0039] During the installation of the front housing 2 of the electricity meter, in order to improve the accuracy of the fit between the metering module 4 and the flexible terminal 31, the pin 23 on one side of the front housing 2 of the electricity meter engages with the arc-shaped groove 13 on the outer side of the rear housing 1 of the electricity meter to guide the front housing 2 of the electricity meter. At this time, the front housing 2 of the electricity meter moves the metering module 4 closer to the flexible terminal 31 so that the mating hole 41 and the flexible terminal 31 are aligned and engaged. After the front housing 2 of the electricity meter and the rear housing 1 of the electricity meter are pressed together, the clamping plates 14 on both sides of the rear housing 1 of the electricity meter are driven to move closer to the pin 23. The clamping plates 14 and the clamping slots 24 on the outer side of the pins 23 fix the front housing 2 of the meter to each other. Specifically, side plates 15 are fixedly provided on the outer side of the clamping plates 14, and sliding plates 16 are fixedly provided on the side of the side plates 15 near the rear housing 1 of the meter. The sliding plates 16 are slidably provided on both sides of the rear housing 1 of the meter. A bidirectional screw 17 is rotatably provided inside the rear housing 1 of the meter. The two ends of the bidirectional screw 17 pass through both sides of the rear housing 1 of the meter. A knob 18 is fixedly provided on both ends of the bidirectional screw 17. The threads of the bidirectional screw 17 are provided on the inner side of the side plates 15.

[0040] By rotating the knob 18, the double-ended screw 17 rotates inside the rear housing 1 of the meter, causing the double-ended screw 17 to drive the outer side plate 15 to push the slide plate 16 to slide. This causes the side plate 15 to move the clamping plate 14 closer to the clamping opening 24 for engagement. To ensure a tight fit between the front housing 2 and the rear housing 1 of the meter, the clamping plate 14 on the side of the clamping opening 24 away from the front housing 2 is set as an inclined surface. This allows the clamping plate 14 to press and move the front housing 2 towards the rear housing 1 while clamping the pin 23, thus ensuring the airtightness of the installation between the front housing 2 and the rear housing 1.

[0041] Reference Figure 1 and Figure 2 Based on the above embodiments, specifically, an expansion socket 32 ​​and a fixing partition 33 are fixedly installed on the side of the circuit board 3 near the front shell 2 of the meter, a wire guide block 12 is fixedly installed at the bottom of the rear shell 1 of the meter corresponding to the connector 34, and an mounting plate 11 is fixedly installed on the side of the rear shell 1 of the meter away from the front shell 2 of the meter.

[0042] By setting up the expansion socket 32, expansion function modules can be installed according to actual usage needs. When installing the expansion function modules, they can be plugged in and assembled by disassembling the front shell 2 and the rear shell 1 of the meter.

[0043] Reference Figure 2 and Figure 3 Figure 4 A fixed partition 33 is also fixedly installed on the side of the circuit board 3 near the front shell 2 of the meter. The fixed partition 33 is located between the flexible terminal 31 and the expansion socket 32. A sealing ring 25 is fixedly installed on the side of the front shell 2 of the meter near the rear shell 1 of the meter. The sealing ring 25 is located on the inner side of the rear shell 1 of the meter. A shelf 27 is fixedly installed on the inner side of the front shell 2 corresponding to the fixed partition 33, which is used to isolate and install the metering module 4.

[0044] To meet the physical isolation requirements of the IR46 international standard for metering and non-metering functions, a fixed partition 33 is fixedly installed on the outside of the circuit board 3 to isolate the flexible power connection post 31 and the expansion socket 32. After the front shell 2 and the rear shell 1 of the meter are fixedly installed, the inner shelf 27 of the front shell 2 is aligned and attached to the fixed partition 33, so that the metering module 4 located below the shelf 27 is automatically isolated from the functional expansion area where the expansion socket 32 ​​is located.

[0045] Reference Figure 3 and Figure 4Based on the above embodiments, in order to meet the requirement of top-to-bottom installation of the metering module 4, specifically, slide rails 210 are fixedly installed on both sides inside the receiving groove 21, and a base plate 26 is fixedly installed at the bottom of the receiving groove 21; a sliding groove 42 is provided on the outside of the metering module 4 corresponding to the slide rail 210, and the metering module 4 slides in cooperation with the slide rail 210 through the sliding groove 42. A slide rail 28 is opened on the inner side of the shelf 27, and a movable partition 29 is slidably installed on the inner side of the slide rail 28, and the movable partition 29 is located at the top of the metering module 4.

[0046] Before installing the metering module 4, the top of the receiving slot 21 is opened by manually sliding the movable partition 29. Then, the metering module 4 is slid from the top of the receiving slot 21 down. During the sliding, the slide rail 210 on the inner side of the receiving slot 21 cooperates with the slide groove 42 on the outer side of the metering module 4 to ensure that the metering module 4 maintains a certain verticality after sliding to the top of the bottom plate 26. Then, the front shell 2 of the meter and the rear shell 1 of the meter are aligned and installed. As the front shell 2 of the meter moves closer to the rear shell 1 of the meter, the movable partition 29 is pushed to slide inward to the inner side of the shelf 27 under the action of the fixed partition 33. Finally, the movable partition 29 isolates the top of the receiving slot 21, which not only satisfies the need for quick disassembly and assembly of the metering module 4, but also achieves the effect of isolating the metering module 4 during installation.

[0047] In summary, when using the energy meter disclosed in this application embodiment, which facilitates the replacement of metering modules, firstly, when expanding the functions of the energy meter according to usage requirements, the double-direction screw 17 is rotated inside the rear housing 1 of the energy meter by rotating the knob 18. This causes the double-direction screw 17 to drive the outer side plate 15 to push the sliding plate 16 to slide. Then, the side plate 15 drives the clamping plate 14 to disengage from the clamping opening 24 outside the pin 23, allowing the front housing 2 of the energy meter to slide and be disassembled along the axial direction of the pin 23. At this time, the metering module 4 inside the front housing 2 is separated from the elastic terminal 31 outside the circuit board 3. After the front housing 2 of the energy meter is disassembled, the functional module can be installed on the outside of the circuit board 3 through the expansion socket 32 ​​to realize the functional expansion of the energy meter.

[0048] When disassembling the metering module 4, after the front housing 2 of the meter separates from the rear housing 1, the movable partition 29 is manually pulled to slide away from the front housing 2, opening the top of the receiving groove 21. The metering module 4 is then installed from top to bottom inside the receiving groove 21. During installation, the slide rail 210 inside the receiving groove 21 cooperates with the slide groove 42 outside the metering module 4 to ensure that the metering module 4 maintains a certain verticality after sliding to the top of the bottom plate 26. Then, the pin 23 on one side of the front housing 2 cooperates with the arc-shaped groove 13 on the outside of the rear housing 1 to guide the movement of the front housing 2. The front housing 2 of the time meter moves the metering module 4 closer to the elastic terminal 31 so that the mating hole 41 and the elastic terminal 31 can be aligned and engaged. At the same time, under the action of the fixed partition 33, the moving partition 29 is pushed to slide inward to the inner side of the shelf 27. Finally, the moving partition 29 isolates the top of the receiving groove 21. Finally, the knob 18 is turned to drive the clamping plate 14 closer to the clamping opening 24 for engagement. By setting the contact surface between the clamping plate 14 and the clamping opening 24 as an inclined surface, the clamping plate 14 can squeeze and move the front housing 2 of the time meter towards the rear housing 1 of the time meter while clamping the pin 23, so as to ensure the sealing of the installation of the front housing 2 and the rear housing 1 of the time meter.

Claims

1. An energy meter with an easily replaceable metering module, characterized in that, Include: The back cover of the meter (1); The front casing (2) of the meter is detachably mounted on one side of the rear casing (1) of the meter; The circuit board (3) is fixedly installed inside the rear shell (1) of the meter. The circuit board (3) has a flexible terminal (31) on the side near the front shell (2) of the meter. The metering module (4) is detachably installed inside the front shell (2) of the meter. A mating hole (41) is provided on one side of the metering module (4) corresponding to the elastic power connection post (31). A power connection terminal is provided inside the mating hole (41). The meter front casing (2) has an inner cavity (21) for placing the metering module (4), the metering module (4) is slidably disposed inside the cavity (21) from top to bottom, and a transparent observation window (22) is provided on the outer side of the meter front casing (2) corresponding to the display end of the metering module (4).

2. The energy meter with easily replaceable metering modules according to claim 1, characterized in that: The front casing (2) of the meter is fixedly provided with pins (23) at the four corners of the side of the meter's rear casing (1), and the pins (23) are provided with clips (24) on the outside of each pin. The four corners of the outer side of the rear casing (1) of the meter are provided with arc-shaped grooves (13), which cooperate with the pins (23). The rear casing (1) of the meter is provided with clamping plates (14) on both sides. The clamping plates (14) are driven by external force and clamped with the clamping mouth (24) to fix the front casing (2) of the meter and the rear casing (1) of the meter.

3. The energy meter with easily replaceable metering modules according to claim 2, characterized in that: Side plates (15) are fixedly provided on the outer side of the clamping plate (14). A sliding plate (16) is fixedly provided on the side of the side plate (15) near the back shell (1) of the meter. The sliding plate (16) is slidably provided on both sides of the back shell (1) of the meter. A bidirectional screw (17) is rotatably provided inside the back shell (1) of the meter. Both ends of the bidirectional screw (17) penetrate through both sides of the back shell (1) of the meter. A knob (18) is fixedly provided on both ends of the bidirectional screw (17). The threads of the bidirectional screw (17) are provided on the inner side of the side plate (15).

4. The energy meter with easily replaceable metering modules according to claim 1, characterized in that: An expansion socket (32) and a fixed partition (33) are fixedly installed on the side of the circuit board (3) near the front shell (2) of the meter. A wire guide block (12) is fixedly installed at the bottom of the rear shell (1) of the meter corresponding to the connector (34). An installation plate (11) is fixedly installed on the side of the rear shell (1) away from the front shell (2) of the meter.

5. The energy meter with easily replaceable metering modules according to claim 4, characterized in that: A fixed partition (33) is also fixedly installed on the side of the circuit board (3) near the front shell (2) of the meter. The fixed partition (33) is located between the flexible terminal (31) and the expansion socket (32). A sealing ring (25) is fixedly provided on the side of the front shell (2) of the meter close to the rear shell (1) of the meter. The sealing ring (25) is located on the inner side of the rear shell (1) of the meter. A shelf (27) is fixedly provided on the inner side of the front shell (2) corresponding to the fixed partition (33) for isolating and installing the metering module (4).

6. The energy meter with easily replaceable metering modules according to claim 5, characterized in that: The receiving groove (21) is fixedly provided with slide rails (210) on both sides inside, and a bottom plate (26) is fixedly provided at the bottom of the receiving groove (21); The metering module (4) has a groove (42) on the outside corresponding to the slide rail (210), and the metering module (4) slides in cooperation with the slide rail (210) through the groove (42).

7. The energy meter with easily replaceable metering modules according to claim 6, characterized in that: The inner side of the shelf (27) is provided with a slide (28), and a movable partition (29) is slidably arranged inside the slide (28). The movable partition (29) is located on the top of the metering module (4).

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