CN217639280U - Extensible guide rail type electric energy meter - Google Patents
Extensible guide rail type electric energy meter Download PDFInfo
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- CN217639280U CN217639280U CN202220523448.1U CN202220523448U CN217639280U CN 217639280 U CN217639280 U CN 217639280U CN 202220523448 U CN202220523448 U CN 202220523448U CN 217639280 U CN217639280 U CN 217639280U
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- electric energy
- energy meter
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Abstract
The utility model relates to an extensible guide tracked electric energy meter, including electric energy meter circuit and external current transformer, electric energy meter circuit include from the top down last circuit board, intermediate circuit board, the lower circuit board that sets gradually, intermediate circuit board be connected with last circuit board and lower circuit board respectively through double contact pin, intermediate circuit board be connected with external current transformer. Compared with the prior art, the utility model has the advantages of powerful, the wiring is convenient, the volume is less.
Description
Technical Field
The utility model relates to an electric energy meter especially relates to an expanded guide tracked electric energy meter.
Background
The guide rail type electric energy meter is small in size and can be conveniently mounted on the guide rail in the distribution box, so that the application range is wide. Through retrieval, chinese patent publication No. CN109507465A discloses a guide rail type electric energy meter, including: the leakage current transformer sampling circuit comprises a processor, a relay circuit, a leakage current transformer sampling circuit, a leakage self-checking circuit and an alarm device; and the processor is used for controlling the electric leakage self-checking circuit to perform electric leakage test at intervals of a preset time threshold.
Chinese patent publication No. CN101833033B discloses a single-phase guide rail type electric energy meter with a communication interface, which comprises a voltage reduction circuit, a metering unit power circuit, an electric energy metering unit, a single-chip microcomputer central processing unit, an electric energy sampling module and the like, and can be communicated with an RS485 bus for power utilization management.
However, the guide rail type electric energy is generally only used as an electric energy meter, has no corresponding expansion function, and is single in use mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an extensible guide rail type electric energy meter for overcoming the defects existing in the prior art.
The purpose of the utility model can be realized through the following technical scheme:
according to the utility model discloses an aspect provides an expanded guide tracked electric energy meter, including electric energy meter circuit and external current transformer, electric energy meter circuit include from the top down last circuit board, intermediate circuit board, the lower circuit board that sets gradually, intermediate circuit board be connected with last circuit board and lower circuit board respectively through double contact pin, intermediate circuit board be connected with external current transformer.
As a preferred technical scheme, the front side of the upper circuit board is provided with a key for realizing the operation of the electric energy meter and a liquid crystal display for realizing the display of the metering data of the electric energy meter, and the back side of the circuit board is provided with a first double-row socket for realizing the interconnection between the circuit boards.
As a preferred technical scheme, the key is positioned at the right side of the upper circuit board and is arranged up and down, and the liquid crystal display screen is positioned at the left side of the upper circuit board.
As a preferred technical scheme, the upper circuit board is provided with two protrusions for fixing.
As a preferred technical solution, the intermediate circuit board includes an RJ12 port for connecting an external current transformer, a first connection terminal for connecting a voltage signal, a metering module, and a second double-row socket for realizing interconnection between the circuit boards.
Preferably, a plurality of RJ12 ports are arranged.
As a preferable technical scheme, a plurality of metering modules are arranged.
Preferably, the first connecting terminal is provided with a plurality of terminals and shares one voltage source.
As a preferred technical solution, the lower circuit board includes a second connection terminal for connecting an auxiliary power supply and a corresponding IO port, an RJ45 terminal for implementing cascade connection of the electric energy meter, and a third double-row socket for implementing interconnection between circuit boards.
As a preferred technical solution, the upper circuit board further includes an infrared port for realizing communication of the electric energy meter.
Compared with the prior art, the utility model has the advantages of it is following:
1) The utility model discloses use external mutual-inductor's mode, can measure the multichannel electric energy, the size is less simultaneously.
2) The utility model discloses a RJ12 port realizes the access of electric current sampling data, uses the extension of RJ45 port realization function, has outer communication interface that expands.
3) The utility model has the advantages of powerful function, convenient wiring, small volume and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the front side of the upper circuit board of the present invention;
fig. 3 is a schematic structural view of the back side of the upper circuit board of the present invention;
fig. 4 is a schematic structural diagram of the intermediate circuit board of the present invention;
fig. 5 is a schematic structural view of the lower circuit board of the present invention;
FIG. 6 is a front view of the appearance of the present invention;
fig. 7 is a plan view of the appearance of the present invention;
fig. 8 is a rear view of the appearance of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1, the extensible guide rail type electric energy meter comprises an electric energy meter circuit and an external current transformer, wherein the electric energy meter circuit comprises an upper circuit board 1, an intermediate circuit board 2 and a lower circuit board 3 which are sequentially arranged from top to bottom, the intermediate circuit board 2 is respectively connected with the upper circuit board 1 and the lower circuit board 3 through double rows of contact pins, and the intermediate circuit board 2 is connected with the external current transformer.
The utility model discloses the electric energy meter uses external mutual-inductor's mode, can measure the multichannel electric energy, and the size is less simultaneously, has outer communication interface that expands. The current sampling of the electric energy meter adopts an external current transformer for sampling, adopts an RJ12 port to realize the access of current sampling data, and adopts an RJ45 port to realize the expansion of functions.
As shown in fig. 2-3, the front surface of the upper circuit board 1 is provided with keys 11 for implementing the operation of the electric energy meter and a liquid crystal display 12 for implementing the display of the metering data of the electric energy meter, and the back surface of the circuit board 1 is provided with a first double-row socket 13 for implementing the interconnection between the circuit boards. The key 11 is located on the right side of the upper circuit board 1 and is arranged up and down, and the liquid crystal display 12 is located on the left side of the upper circuit board 1.
The upper circuit board 1 is provided with two protrusions 14 for fixation. The upper circuit board 1 further comprises an infrared port for realizing communication of the electric energy meter.
The working principle of the upper circuit board is as follows:
the upper circuit board gets electricity from the middle circuit board through a contact pin. Through the liquid crystal display, a user can know the power utilization condition conveniently and visually, and the interaction between the user and the electric energy meter is facilitated by using the key input. And the communication of the electric energy meter is realized through the infrared port.
As shown in fig. 4, the intermediate circuit board 2 implements measurement of multiple paths of power data, and includes an RJ12 port 21 for connecting an external current transformer, a first connection terminal 22 for connecting a voltage signal, a measurement module 23, and a second double-row socket 24 for implementing interconnection between circuit boards. A plurality of RJ12 ports 21 are arranged. The metering modules 23 are provided in plurality. The first connection terminal 22 is provided in plurality and shares a voltage source.
The working principle of the intermediate circuit board is as follows:
and the metering of the multi-path three-phase electric energy is realized by using the intermediate circuit board. Wherein each path of metering adopts a mode of one metering module, and a power supply is provided for the metering circuit through a contact pin.
The intermediate circuit board has 4 RJ12 interfaces (see CH1 to CH4 in fig. 6) for current sampling. Each RJ12 interface may be connected to 3 external open current transformers for sampling the current. The opening mutual inductor can be directly clamped on the current wire, and the current wire is prevented from being disassembled and assembled. In this way, the electric energy meter can collect 4 paths of three-phase alternating current.
And voltage sampling adopts universal terminal wiring, so that convenience and stability are realized. (see UA UB UC UN in fig. 8) wherein the multiple currents share a voltage source.
As shown in fig. 5, the lower circuit board 3 includes a second connection terminal 31 for connecting an auxiliary power supply and a corresponding IO port, an RJ45 terminal 32 for implementing cascade connection of the electric energy meter, and a third dual-row socket 33 for implementing interconnection between circuit boards.
The working principle of the lower circuit board is as follows:
the lower circuit board realizes power conversion through the auxiliary power supply of the wiring terminal, and provides a voltage-stabilizing direct-current power supply required by circuits such as metering and displaying.
The power supply of the power supply to the middle circuit board and the upper circuit board is realized through the contact pins, and meanwhile, the data communication among the circuit boards is realized through the contact pins.
The communication between the electric energy meter and the expansion module can be realized through the RJ45 port.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The extensible guide rail type electric energy meter is characterized by comprising an electric energy meter circuit and an external current transformer, wherein the electric energy meter circuit comprises an upper circuit board (1), an intermediate circuit board (2) and a lower circuit board (3) which are sequentially arranged from top to bottom, the intermediate circuit board (2) is respectively connected with the upper circuit board (1) and the lower circuit board (3) through double rows of contact pins, and the intermediate circuit board (2) is connected with the external current transformer.
2. The extensible guide rail type electric energy meter according to claim 1, wherein the upper circuit board (1) is provided with keys (11) for realizing the operation of the electric energy meter and a liquid crystal display (12) for realizing the display of the metering data of the electric energy meter on the front surface, and the first double-row socket (13) for realizing the interconnection between the circuit boards is arranged on the back surface of the circuit board (1).
3. The expandable guide rail type electric energy meter according to claim 2, wherein the key (11) is positioned at the right side of the upper circuit board (1) and is arranged up and down, and the liquid crystal display (12) is positioned at the left side of the upper circuit board (1).
4. An expandable track-type electric energy meter according to claim 2, wherein the upper circuit board (1) is provided with two protrusions (14) for fixing.
5. An extensible guide rail type electric energy meter according to claim 1, characterized in that the intermediate circuit board (2) comprises an RJ12 port (21) for connecting an external current transformer, a first connecting terminal (22) for connecting a voltage signal, a metering module (23) and a second double-row socket (24) for realizing interconnection between the circuit boards.
6. An expandable track-type electric energy meter according to claim 5, wherein there are a plurality of RJ12 ports (21).
7. The expandable track-type electric energy meter according to claim 5, wherein the metering module (23) is provided in plurality.
8. The expandable track-type electric energy meter according to claim 5, wherein the first connection terminal (22) is provided in plurality and shares a voltage source.
9. An expandable track-type electric energy meter according to claim 1, wherein the lower circuit board (3) comprises a second connection terminal (31) for connecting an auxiliary power supply and a corresponding IO port, an RJ45 terminal (32) for realizing cascade connection of the electric energy meter, and a third double-row socket (33) for realizing interconnection between the circuit boards.
10. The extensible guide rail type electric energy meter according to claim 1, wherein the upper circuit board (1) further comprises an infrared port for realizing communication of the electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220523448.1U CN217639280U (en) | 2022-03-11 | 2022-03-11 | Extensible guide rail type electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220523448.1U CN217639280U (en) | 2022-03-11 | 2022-03-11 | Extensible guide rail type electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217639280U true CN217639280U (en) | 2022-10-21 |
Family
ID=83645354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220523448.1U Active CN217639280U (en) | 2022-03-11 | 2022-03-11 | Extensible guide rail type electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217639280U (en) |
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2022
- 2022-03-11 CN CN202220523448.1U patent/CN217639280U/en active Active
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