Electric energy meter compatible with structural member

Abstract

The utility model relates to the technical field of electric energy meters, in particular to an electric energy meter compatible with structural members, which comprises a communication module, a mainboard, a power supply module, a meter shell assembly, a voltage measurement module and a current measurement module. The voltage measurement module and the current measurement module are detachably installed in the meter shell assembly, the communication module, the voltage measurement module and the current measurement module are all connected with the mainboard, and the power module supplies power to the communication module, the mainboard, the voltage measurement module and the current measurement module. Structural members of the voltage measurement module and the current measurement module are designed to be interchangeable inserts, so that the structural members of the electric energy meter are compatible with a three-phase direct type, a single-phase type and a three-phase mutual inductance type, and the purpose of designing the electric energy meter which is applicable in function, light in type structure and wider in application scene is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, and particularly relates to an electric energy meter with compatible structural parts. Background Technique

[0002] An electric energy meter is an instrument used to measure the consumption of electric energy. It is an indispensable part of the power system. Its main function is to accurately measure the electric energy consumed by users, so as to facilitate the power company to calculate and collect electricity bills. At the same time, it also facilitates users to understand their electricity consumption and achieve energy conservation and emission reduction.

[0003] At present, the functions of the electric energy meters adopted in the meter industry are relatively bloated, resulting in an increased burden on the operation of the electric energy meters. The form structure is relatively complex and cannot adapt to different power systems. Whether it is a three-phase direct type, single-phase or three-phase through mutual inductor type, it is necessary to design a dedicated electric energy meter for each type, and the application scenarios are very limited. Content of the Utility Model

[0004] Therefore, the utility model provides an electric energy meter with compatible structural parts, aiming to design an electric energy meter with applicable functions, a lightweight form structure and a wider application scenario.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An electric energy meter with compatible structural parts includes a communication module, a main board, a power module, a meter case assembly, a voltage measurement module and a current measurement module. The communication module, the main board and the power module are all fixedly installed in the meter case assembly. The voltage measurement module and the current measurement module are both detachably installed in the meter case assembly. The communication module, the voltage measurement module and the current measurement module are all connected to the main board. The power module supplies power to the communication module, the main board, the voltage measurement module and the current measurement module. The structural parts of the voltage measurement module and the current measurement module are both designed as interchangeable inserts, so that the structural parts of the electric energy meter are compatible with three-phase direct type, single-phase and three-phase through mutual inductor type.

[0007] Preferably, the current measurement module is three current transformers, and the three current transformers are all detachably installed in the meter case assembly. The three current transformers are all connected to the main board, so that the electric energy meter serves as a three-phase direct type electric energy meter.

[0008] Preferably, the current measurement module is one current transformer, and the current transformer is detachably installed in the meter case assembly. The current transformer is connected to the main board, so that the electric energy meter serves as a single-phase electric energy meter.

[0009] Preferably, a plurality of groups of terminal pieces are arranged inside the electric energy meter. The number of groups of the terminal pieces matches the number of current transformers and the number of voltage measurement modules. Both the current transformer and the voltage measurement module are connected to the terminal pieces. A wiring terminal sleeve is arranged on each of the plurality of groups of terminal pieces. A screw hole is arranged on the front end face of the wiring terminal sleeve. The electric energy meter is provided with a pressure screw matching the screw hole. An inlet hole communicating with the screw hole is arranged on the upper end face of the wiring terminal sleeve. The meter housing assembly includes a front housing and a rear housing. Wiring holes matching the inlet holes are arranged at the upper and lower ends of the rear housing.

[0010] Preferably, the current measurement module is a current terminal, and the voltage measurement module is a voltage terminal. Both the current terminal and the voltage terminal are connected to the main board. A Rogowski coil is arranged outside the electric energy meter. The Rogowski coil is respectively connected to the current terminal and the voltage terminal, so that the electric energy meter serves as a three-phase mutual inductive electric energy meter.

[0011] Preferably, the meter housing assembly includes a front housing and a rear housing. A through hole matching the voltage terminal and the current terminal is arranged at the lower end of the front housing. A terminal protection cover is arranged outside the electric energy meter. The terminal protection cover is rotatably connected to the front housing to cover or expose the corresponding voltage terminal and current terminal.

[0012] Preferably, an elastic cover is integrally arranged at the lower end of the terminal protection cover. The Rogowski coil is connected to the current terminal and the voltage terminal through the elastic cover.

[0013] Preferably, the communication module includes at least one or more of a carrier communication unit, a 4G / 5G communication unit, and a 485 communication unit.

[0014] Preferably, the meter housing assembly includes a front housing and a rear housing. The front housing protrudes outward to form a cavity. The electric energy meter further includes an extended function module. The extended function module is installed in the cavity. The extended function module is connected to the main board.

[0015] Preferably, the electric energy meter further includes an indicator light. The indicator light is installed on the surface of the front housing. The indicator light is connected to the main board. The indicator light is used to indicate the working state of the electric energy meter and the line connection state.

[0016] The beneficial technical effects of the present utility model at least include: adopting an electric energy meter with compatible structural parts. Compared with the electric energy meters currently used in the meter industry, the electric energy meter with compatible structural parts provided in this application deletes unnecessary functional structures, reduces the operation burden of the electric energy meter. At the same time, the structural parts of the voltage measurement module and the current measurement module are both designed as interchangeable inserts, realizing the compatibility of the structural part molds of the electric energy meter for three-phase direct type, three-phase mutual inductor type, and single-phase, greatly improving the application scenarios and scope of application of the electric energy meter, and improving the universality, maintainability, and economy of the electric energy meter.

[0017] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and the accompanying drawings. Description of the Drawings

[0018] The present utility model will be further described below with reference to the accompanying drawings:

[0019] Figure 1 It is an exploded view of the structure of an electricity meter compatible with the structural components of the embodiment of the present utility model.

[0020] Figure 2 It is an exploded view of the structure of an electricity meter compatible with the structural components of the embodiment of the present utility model.

[0021] Figure 3 It is an exploded view of the structure of an electricity meter compatible with the structural components of the embodiment of the present utility model.

[0022] Figure 4 It is a schematic structural view of a terminal protection cover according to an embodiment of the present utility model.

[0023] Figure 5 It is a schematic structural view of an elastic cover according to an embodiment of the present utility model.

[0024] Wherein: 1. Communication module, 2. Main board, 3. Power supply module, 4. Voltage terminal, 501. Current transformer, 502. Current terminal, 6. Wiring terminal piece, 7. Wiring terminal sleeve, 8. Screw hole, 9. Pressing screw, 10. Inlet hole, 11. Front shell, 12. Rear shell, 121. Wiring hole, 13. Terminal protection cover, 131. Elastic cover, 14. Extended function module. Specific Embodiments

[0025] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0026] In the following description, terms such as "inner", "outer", "upper", "lower", "left", "right", etc. indicating orientation or positional relationship are only for convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0027] An embodiment of the present application provides a structure-compatible electricity meter. The structure-compatible electricity meter may at least include a communication module 1, a main board 2, a power module 3, a meter case assembly, a voltage measurement module, and a current measurement module. The communication module 1, the main board 2, and the power module 3 are all fixedly installed in the meter case assembly. The voltage measurement module and the current measurement module are both detachably installed in the meter case assembly. The communication module 1, the voltage measurement module, and the current measurement module are all connected to the main board 2. The power module 3 supplies power to the communication module 1, the main board 2, the voltage measurement module, and the current measurement module. The structural parts of the voltage measurement module and the current measurement module are both designed as interchangeable inserts, so that the structural parts of the electricity meter are compatible with three-phase direct type, single-phase, and three-phase through mutual inductance type.

[0028] Among them, the interchangeable insert refers to that on the same base or device, multiple different inserts or accessories can be installed. The interchangeable insert design allows different components to be quickly replaced as needed without changing the overall structure to adapt to different functions or requirements.

[0029] Among them, the functions specifically deleted in the structure-compatible electricity meter provided in this embodiment at least include: demand, power cut-off, power on, display screen, infrared communication, ladder, fee control, events (multiple events such as constant magnetic field interference, power supply abnormality, etc.), realizing the function lightweight of the electricity meter.

[0030] It can be understood that compared with the electricity meters currently used in the meter industry, the structure-compatible electricity meter provided in this embodiment deletes unnecessary functional structures, reduces the operation burden of the electricity meter, thereby realizing a refresh frequency of 20 ms for the instantaneous quantity data of the electricity meter. At the same time, in this embodiment, the structural parts of the voltage measurement module and the current measurement module are both designed as interchangeable inserts, realizing that the structural parts mold of the electricity meter is compatible with three-phase direct type, three-phase mutual inductor type, and single-phase, greatly improving the application scenarios and scope of application of the electricity meter, and improving the versatility, maintainability, and economy of the electricity meter.

[0031] Please refer to the attached Figure 1 , Figure 1 which shows an exploded view of the structure of a structure-compatible electricity meter provided in an embodiment of this specification.

[0032] As Figure 1 shown, in this structure-compatible electricity meter, the current measurement module is three current transformers 501. The three current transformers 501 are all detachably installed in the meter case assembly. The three current transformers 501 are all connected to the main board 2, so that the electricity meter serves as a three-phase direct electricity meter.

[0033] On the other hand, in this embodiment, several groups of terminal pieces 6 are arranged in the electricity meter. The number of groups of the terminal pieces 6 matches the number of the current transformers 501 and the number of the voltage measurement modules. AsFigure 1 As shown, there are four groups of terminal pieces 6, three of which are respectively connected to three current transformers 501, and one group of terminal pieces 6 is connected to a voltage measurement module (not shown in the figure). Each of the four groups of terminal pieces 6 is provided with a terminal sleeve 7. The front end face of the terminal sleeve 7 is provided with a screw hole 8, and the electricity meter is provided with a pressure screw 9 that matches the screw hole 8. The upper end face of the terminal sleeve 7 is provided with an inlet hole 10 that communicates with the screw hole 8. The meter case assembly includes a front case 11 and a rear case 12. Four wiring holes 121 that match the inlet holes 10 are provided at the upper and lower ends of the rear case 12.

[0034] Please refer to the appendix Figure 2 , Figure 2 which shows an exploded view of the structure of a structure-compatible electricity meter provided in an embodiment of this specification.

[0035] As Figure 2 shown, in this structure-compatible electricity meter, the current measurement module is a current transformer 501. The current transformer 501 is detachably installed in the meter case assembly, and the current transformer 501 is connected to the main board 2 so that the electricity meter functions as a single-phase electricity meter.

[0036] On the other hand, in this embodiment, several groups of terminal pieces 6 are provided inside the electricity meter. The number of groups of terminal pieces 6 matches the number of current transformers 501 and the number of voltage measurement modules. As Figure 2 shown, there are two groups of terminal pieces 6. One group of terminal pieces 6 is connected to the current transformer 501, and the other group of terminal pieces 6 is connected to a voltage measurement module (not shown in the figure). Each of the two groups of terminal pieces 6 is provided with a terminal sleeve 7. The front end face of the terminal sleeve 7 is provided with a screw hole 8, and the electricity meter is provided with a pressure screw 9 that matches the screw hole 8. The upper end face of the terminal sleeve 7 is provided with an inlet hole 10 that communicates with the screw hole 8. The meter case assembly includes a front case 11 and a rear case 12. Two wiring holes 121 that match the inlet holes 10 are provided at the upper and lower ends of the rear case 12.

[0037] Please refer to the appendix Figure 3 , Figure 3 which shows an exploded view of the structure of a structure-compatible electricity meter provided in an embodiment of this specification.

[0038] As Figure 3 shown, in this structure-compatible electricity meter, the current measurement module is a current terminal 502, the voltage measurement module is a voltage terminal 4. Both the current terminal 502 and the voltage terminal 4 are connected to the main board 2. An Rogowski coil (not shown in the figure) is provided outside the electricity meter, and the Rogowski coil is respectively connected to the current terminal 502 and the voltage terminal 4 so that the electricity meter functions as a three-phase mutual inductance electricity meter.

[0039] Among them, the Rogowski coil is a sensor used to measure current. It consists of a coil wound around an iron core. When current passes through the main coil of the Rogowski coil, a voltage signal will be induced in the secondary coil of the Rogowski coil. It can be understood that the electricity meter in this embodiment can remove the current transformer 501 and does not need to set the terminal piece 6. Only by using the current terminal 502 as the current measurement module and the voltage terminal 4 as the voltage measurement module, and connecting the Rogowski coil to the current terminal 502 and the voltage terminal 4 respectively, the current and voltage can be collected. Therefore, in this embodiment, by matching the electricity meter with the Rogowski coil, the data acquisition of ultra-large current and wide voltage can be realized without directly accessing the power grid.

[0040] On the other hand, in this embodiment, please refer to the attached Figure 4 , the meter case assembly includes a front case 11 and a rear case 12. A through hole matching the voltage terminal 4 and the current terminal 502 is provided at the lower end of the front case 11. A terminal protection cover 13 is provided outside the electricity meter. The terminal protection cover 13 is rotatably connected to the front case 11 to cover or expose the corresponding voltage terminal 4 and current terminal 502.

[0041] As shown in the figure, the terminal protection cover 13 can be fixed to the front case 11 of the electricity meter to cover the corresponding voltage terminal 4 and current terminal 502, or can be flipped outwards by 90° to expose the corresponding voltage terminal 4 and current terminal 502, which is convenient for wiring and also plays a role in protecting and dust-proofing the voltage terminal 4 and the current terminal 502.

[0042] On the other hand, in this embodiment, please refer to the attached Figure 5 , an elastic cover 131 is integrally provided at the lower end of the terminal protection cover 13. The Rogowski coil is connected to the current terminal 502 and the voltage terminal 4 through the elastic cover 131, which is convenient for wiring. At the same time, it can cover the through hole at the lower end of the terminal protection cover 13 when the Rogowski coil is not connected to the current terminal 502 and the voltage terminal 4, playing a certain dust-proof role.

[0043] In an embodiment of this specification, the communication module 1 includes at least one or a combination of communication units such as a carrier communication unit, a 4G / 5G communication unit, and a 485 communication unit.

[0044] In an embodiment of this specification, the meter case assembly includes a front case 11 and a rear case 12. The front case 11 protrudes outward to form a cavity. The electricity meter further includes an extended function module 14. The extended function module 14 is installed in the cavity, and the extended function module 14 is connected to the main board 2.

[0045] Exemplarily, the extended function module 14 can have functions such as power quality monitoring and photovoltaic device data interaction.

[0046] In this embodiment, by setting the extended function module 14, it is convenient for the subsequent upgrade and maintenance of the electricity meter and reduces the replacement of the electricity meter.

[0047] In one embodiment of this specification, the electricity meter further includes an indicator light. The indicator light is installed on the surface of the front shell 11 and is connected to the main board 2. The indicator light is used to indicate the working state of the electricity meter and the line connection state.

[0048] This embodiment does not use a display screen that is prone to dust accumulation, fogging, and large space occupation. Instead, it directly uses an indicator light to represent the working state and the line connection state, reducing power consumption, helping to save energy. Moreover, the indicator light is not affected by electromagnetic interference (EMI) and can work stably in an electromagnetic noise environment, contributing to the stability of the indication of the working state of the electricity meter and the line connection state.

[0049] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A structure-compatible electricity meter, characterized in that, It includes a communication module, a main board, a power module, a meter case assembly, a voltage measurement module, and a current measurement module. The communication module, the main board, and the power module are all fixedly installed in the meter case assembly. The voltage measurement module and the current measurement module are both detachably installed in the meter case assembly. The communication module, the voltage measurement module, and the current measurement module are all connected to the main board. The power module supplies power to the communication module, the main board, the voltage measurement module, and the current measurement module. The structural parts of the voltage measurement module and the current measurement module are both designed as interchangeable inserts, so that the structural parts of the watt-hour meter are compatible with three-phase direct-connected, single-phase, and three-phase through mutual inductance types.

2. The watt-hour meter with compatible structural parts according to claim 1, wherein the current measurement module is three current transformers. The three current transformers are all detachably installed in the meter case assembly. The three current transformers are all connected to the main board, so that the watt-hour meter is used as a three-phase direct-connected watt-hour meter.

3. The watt-hour meter with compatible structural parts according to claim 1, wherein the current measurement module is one current transformer. The current transformer is detachably installed in the meter case assembly. The current transformer is connected to the main board, so that the watt-hour meter is used as a single-phase watt-hour meter.

4. The watt-hour meter with compatible structural parts according to any one of claims 2 or 3, wherein several groups of terminal pieces are arranged in the watt-hour meter. The number of groups of the terminal pieces matches the number of current transformers and the number of voltage measurement modules. The current transformers and the voltage measurement modules are both connected to the terminal pieces. Several groups of terminal pieces are all provided with terminal sleeve. The front end face of the terminal sleeve is provided with screw holes. The watt-hour meter is provided with pressing screws matching the screw holes. The upper end face of the terminal sleeve is provided with inlet holes communicating with the screw holes. The meter case assembly includes a front case and a rear case. The upper and lower ends of the rear case are provided with wiring holes matching the inlet holes.

5. The watt-hour meter with compatible structural parts according to claim 1, wherein the current measurement module is a current terminal, and the voltage measurement module is a voltage terminal. The current terminal and the voltage terminal are both connected to the main board. A Rogowski coil is arranged outside the watt-hour meter. The Rogowski coil is respectively connected to the current terminal and the voltage terminal, so that the watt-hour meter is used as a three-phase through mutual inductance watt-hour meter.

6. The watt-hour meter with compatible structural parts according to claim 5, wherein the meter case assembly includes a front case and a rear case. The lower end of the front case is provided with through holes matching the voltage terminal and the current terminal. A terminal protection cover is arranged outside the watt-hour meter. The terminal protection cover is rotatably connected to the front case to cover or expose the corresponding voltage terminal and current terminal.

7. The watt-hour meter with compatible structural parts according to claim 6, wherein an elastic cover is integrally arranged at the lower end of the terminal protection cover. The Rogowski coil is connected to the current terminal and the voltage terminal through the elastic cover.

8. The watt-hour meter with compatible structural parts according to claim 1, wherein The communication module includes at least one or more of a carrier communication unit, a 4G / 5G communication unit, and a 485 communication unit.

9. A structure-compatible electricity meter according to claim 1, wherein the meter housing assembly includes a front housing and a rear housing. The front housing protrudes outward to form a cavity. The electricity meter further includes an extended function module, which is installed in the cavity and is connected to the main board.

10. A structure-compatible electricity meter according to claim 1, wherein the electricity meter further includes an indicator light, which is installed on the surface of the front housing and is connected to the main board. The indicator light is used to indicate the working state of the electricity meter and the line connection state.

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