CN217787231U - Three-phase guide rail type electric energy meter - Google Patents
Three-phase guide rail type electric energy meter Download PDFInfo
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- CN217787231U CN217787231U CN202220806361.5U CN202220806361U CN217787231U CN 217787231 U CN217787231 U CN 217787231U CN 202220806361 U CN202220806361 U CN 202220806361U CN 217787231 U CN217787231 U CN 217787231U
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Abstract
The utility model relates to a three-phase guide tracked electric energy meter, including last watchcase, main circuit board, power strip and base, last watchcase and base be connected the back and form the accommodation space, main circuit board and power strip put into the accommodation space after connecting, the base on be equipped with and be used for the buckle of electric energy meter card dress on the 35mm guide rail. Compared with the prior art, the utility model has the advantages of the operation is convenient.
Description
Technical Field
The utility model relates to an electric energy meter especially relates to a three-phase guide tracked electric energy meter.
Background
The three-phase electric energy meter is an electric energy meter commonly used by industrial and large-power consumption residents. Through retrieval, the chinese patent publication No. CN 212321720U discloses a three-phase electric energy meter SOC single-chip scheme, which can implement metering, displaying and the like of three-phase electric energy.
Meanwhile, chinese patent publication No. CN 211827430U discloses a principle and a circuit of a three-phase cost control electric energy meter. And encrypting the data through an ESAM module.
The above two prior patents only explain the circuit principle, and do not explain the structure.
Through further retrieval, the Chinese patent publication No. CN101639492A discloses a guide rail type three-phase electric energy meter, which comprises circuits such as communication display and the like, can realize the metering of three-phase electricity and is conveniently installed on a 35mm universal guide rail. However, the circuit of the prior patent adopts two chips, and meanwhile, no key is arranged, so that the field interaction with a user is inconvenient. The conversion from commercial power to a direct current 5V power supply is realized through the three-way transformer, power is supplied to the metering chip, and meanwhile, a large space is needed by using a low-frequency transformer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three-phase guide tracked electric energy meter in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a three-phase guide tracked electric energy meter, includes watchcase, main circuit board, power strip and base, last watchcase and base be connected the back and form the accommodation space, main circuit board and power strip put into the accommodation space after connecting, the base on be equipped with and be used for the buckle of electric energy meter card dress on the 35mm guide rail.
Preferably, the front surface of the upper surface shell is provided with a transparent window for realizing liquid crystal display, a transparent opening for realizing signal lamp display, a film key for realizing manual operation of the electric energy meter, a first through hole for realizing connection and fixation with the base and a second through hole for realizing fastening of a power line.
Preferably, the number of the transparent openings is four, the number of the film keys is four, the first through holes are formed in four corners of the upper watch case, and the number of the second through holes is eight.
Preferably, the upper surface shell is provided with a turnover transparent cover, the transparent cover is provided with a square hole, and a lead sealing nose is arranged at the corresponding position of the square hole of the transparent cover on the main body below the transparent cover.
Preferably, the main circuit board is provided with a liquid crystal display for displaying electric energy data of the electric energy meter, an indicator lamp for displaying an alarm state, a voltage loss state and an active electric energy pulse of the electric energy meter, a function key for realizing parameter setting and checking of the electric energy meter and a main metering chip.
Preferably, the main circuit board is provided with a jack for mounting the wireless communication module, a first opening for reducing wireless signal attenuation and a socket for connecting the main circuit board with the power panel.
Preferably, the power panel is provided with a via hole for fixing the power panel on the base, a contact pin for realizing signal connection between the main circuit board and the power panel, an RS-485 communication port for realizing data communication, a second opening for passing a current sampling line and a voltage sampling plate.
Preferably, the number of the through holes is two, and the number of the pins is two.
Preferably, the base is provided with a third opening for leading out a power line, a fourth opening for leading out an auxiliary terminal of the electric energy meter, an opening guide post for fixing a power panel, a copper conductor for current circulation and a current transformer for current sampling of a three-phase circuit.
Preferably, the number of the third openings is eight, the number of the fourth openings is three, and the number of the opening guide pillars is two.
Compared with the prior art, the utility model has the advantages of it is following:
1) The utility model has convenient operation, and greatly improves the operation convenience by arranging a transparent window for realizing liquid crystal display, a transparent opening for realizing signal lamp display and a film button for realizing manual operation of the electric energy meter on the front surface of the upper meter shell;
2) The utility model has good lead sealing effect, and the lead sealing nose is arranged at the corresponding position of the square hole of the transparent cover on the main body below the transparent cover, and the lead sealing nose is provided with a lead sealing hole, thus realizing the lead sealing of the electric energy meter through the lead sealing nose in the square hole;
3) The utility model discloses functions such as electric energy measurement demonstration are all integrated on a chip. The main circuit board adopts a single chip (71M 6543F) scheme, and functions of electric energy metering, electric energy data display, key pressing and the like are realized by using one chip.
4) The utility model discloses there is the porous jack that has on the main circuit board to on the next door of jack, the main circuit has the trompil, reduces the decay to radio signal.
Drawings
Fig. 1 is a schematic front view of the upper watch case of the present invention;
fig. 2 is a left side view structure diagram of the upper watch case of the present invention;
fig. 3 is a rear view of the upper case of the present invention;
fig. 4 is a schematic front structural view of the main circuit board of the present invention;
fig. 5 is a schematic diagram of a back structure of the main circuit board of the present invention;
fig. 6 is a schematic front structural view of the power panel of the present invention;
fig. 7 is a schematic front view of the power panel of the present invention after the voltage sampling plate is installed;
fig. 8 is a schematic view of the structure of the base of the present invention;
fig. 9 is a schematic top view of the base of the present invention;
fig. 10 is a schematic view of the structure of the electric energy meter according to the present invention;
fig. 11 is a left-side view structural diagram of the appearance of the electric energy meter of the present invention;
fig. 12 is a schematic circuit diagram of the power panel of the present invention;
fig. 13 is a schematic circuit diagram of the main circuit board of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be made clear and fully described below, and it should be understood that the described embodiments are some, but not all 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. 1-13, a three-phase guide rail type electric energy meter comprises an upper meter case 1, a main circuit board 2, a power board 3 and a base 4, wherein the upper meter case 1 is connected with the base 4 to form an accommodating space, the main circuit board 2 and the power board 3 are connected and then placed in the accommodating space, and a buckle used for clamping the electric energy meter on a 35mm guide rail is arranged on the base 4.
As shown in fig. 10, the utility model discloses use switching power supply and single-chip's scheme to realize guide tracked three-phase electric energy meter. The current wiring of the electric energy meter enters L1L 2L 3N from the lower part and flows out L1'L2' L3'N' from the upper part.
As shown in fig. 1-3, the front of upper watch case 1 is provided with transparent window 11 for implementing liquid crystal display, transparent opening 12 for implementing signal lamp display, membrane key 13 for implementing manual operation of the electric energy meter, first through hole 14 for implementing connection and fixation with base 4, and second through hole 15 for implementing fastening of power line.
Four transparent openings 12 are provided, four film keys 13 are provided, the first through holes 14 are provided at four corners of the upper case 1, and eight second through holes 15 are provided.
The reverse side of the upper surface shell 1 is provided with a turnover transparent cover 17, the transparent cover 17 is provided with a square hole, and a lead sealing nose 16 is arranged at the corresponding position of the square hole of the transparent cover on the main body below the transparent cover 17.
The upper meter shell is provided with a transparent window to realize the display of liquid crystal, and the upper meter shell is provided with four transparent holes to realize the display of a signal lamp. And the four thin film keys are used for realizing manual operation of the electric energy meter. The four corners are provided with through holes, so that the upper meter shell can be conveniently fixed on the meter seat through four screws. Four through holes are formed in the upper portion and the lower portion of the upper meter shell respectively, and a screwdriver can be used for screwing down screws arranged below the through holes to fasten the power line.
Transparent covers which can be turned over are arranged above and below the upper surface shell. Wherein the transparent cover is provided with a square hole. Lead sealing noses are arranged at corresponding positions of square holes of the transparent cover on the main body below the transparent cover, lead sealing holes are formed in the lead sealing noses, and lead sealing of the electric energy meter can be achieved through the lead sealing noses in the square holes.
As shown in fig. 4-5, the main circuit board 2 is provided with a liquid crystal display 21 for displaying electric energy data of the electric energy meter, an indicator light 23 for displaying an alarm state, a voltage loss state and an active electric energy pulse of the electric energy meter, a function key 22 for realizing setting and checking of parameters of the electric energy meter, and a main metering chip.
The main circuit board 2 is provided with a jack 24 for mounting a wireless communication module, a first opening 25 for reducing wireless signal attenuation, and a socket 26 for connecting the main circuit board with a power panel.
The functions of electric energy metering display and the like are integrated on one chip. The main circuit board adopts a single-chip 71M6543F scheme, and functions of electric energy metering, electric energy data display, key pressing and the like are realized by using one chip.
The main circuit board is also provided with a nonvolatile register which is used for storing information such as the electric quantity, the setting parameters and the like of the electric energy meter.
And sockets are arranged at two ends of the back surface of the main circuit board, and the main circuit board is connected with the power panel through the sockets by using the contact pins. And meanwhile, the main circuit board is fixed.
As shown in fig. 6-7, the power board 3 is provided with a through hole 31 for fixing the power board on the base, a pin 32 for signal connection between the main circuit board and the power board, an RS-485 communication port 33 for data communication, a second opening 34 for passing a current sampling line, and a voltage sampling board 35.
Two through holes 31 are provided, and two rows of pins 32 are provided.
And a three-phase current transformer is arranged on the ABC three-phase guide rail copper bar, and current sampling of a three-phase circuit is performed through the current transformer. The current collection is led to the display interface circuit board through a flexible lead. The current sampling is connected with the main circuit board through the plug-in terminal.
The four copper bars are led out by flexible wires. And the power panel is fixed on the power panel through welding. The power panel is provided with an RS-485 circuit which is electrically isolated, and the reading device can realize data communication with the electric energy meter through an RS-485 communication port. And the RS-485 communication port is led out in a terminal mode.
And the power panel is also provided with two paths of passive switch terminals for outputting electric energy precision correction pulses and clock precision correction pulses of the electric energy meter.
The power panel adopts a switching power supply to realize the conversion from three-phase alternating current to two paths of electrically isolated 5V direct current power supplies. One path supplies power to the metering circuit, and the other path supplies power to the RS-485 circuit. Fig. 12 shows a block diagram of a conversion from three-phase power to 5V power.
The corresponding position on the power panel is provided with an opening, so that a current sampling wire can conveniently pass through and is connected to the main circuit board.
Two rows of contact pins are arranged at two ends of the power panel, and signal connection between the main circuit board and the power panel is realized through the contact pins. The device comprises a communication line, a pulse signal line, a voltage acquisition signal line and a power line. Meanwhile, the main circuit board is fixed through the contact pins.
Two ends of the power panel are provided with two through holes and are fastened and fixed on the base through two screws at the two ends.
The power panel is also provided with a voltage sampling plate in a pin welding mode. The voltage sampling plate divides voltage through a resistor and converts three-phase voltage of 220V into a low-voltage signal. The electric connection and the fixation between the voltage sampling plate and the power supply plate are realized through the contact pin.
As shown in fig. 8-9, the base 4 is provided with a third opening 41 for leading out a power line, a fourth opening 42 for leading out an auxiliary terminal of the electric energy meter, an opening guide post 43 for fixing a power panel, a copper conductor 44 for current circulation, and a current transformer 45 for current sampling of a three-phase circuit.
The number of the third openings 41 is eight, the number of the fourth openings 42 is three, and the number of the opening guide pillars 43 is two.
The electric energy meter is installed in a guide rail mode, and is clamped on a 35mm guide rail through a buckle on the base, so that the electric energy meter is installed. After the electric energy meter is clamped in place, the buckle bounces, and the electric energy meter is fixed.
Four openings are respectively arranged on the upper part and the lower part of the base, and the power line is led out through the openings. The electric energy meter is inserted from the lower part of the electric energy meter and is taken out from the upper part of the electric energy meter. The outgoing line and the incoming line of the electric energy meter are fixed in a line lifting mode.
The base is provided with three open holes for leading out the auxiliary terminals of the electric energy meter.
The base is provided with two open hole guide posts for fixing the power panel by using screws.
And the copper conductor is arranged on the base and used for circulating current. The current transformer is arranged on the copper conductor of the ABC three phases and is used for sampling the current of the three-phase circuit.
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 substitutions within the technical scope of the present invention, and these modifications or substitutions 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 utility model provides a three-phase guide tracked electric energy meter, its characterized in that includes upper watch shell (1), main circuit board (2), power strip (3) and base (4), upper watch shell (1) be connected back with base (4) and form the accommodation space, main circuit board (2) and power strip (3) put into the accommodation space after connecting, base (4) on be equipped with and be used for the buckle of electric energy meter card dress on the 35mm guide rail.
2. The guide rail type three-phase electric energy meter according to claim 1, wherein the front surface of the upper casing (1) is provided with a transparent window (11) for realizing liquid crystal display, a transparent hole (12) for realizing signal lamp display, a film key (13) for realizing manual operation of the electric energy meter, a first through hole (14) for realizing connection and fixation with the base (4), and a second through hole (15) for realizing power line fastening.
3. The three-phase guide rail type electric energy meter according to claim 2, wherein the number of the transparent openings (12) is four, the number of the film keys (13) is four, the number of the first through holes (14) is four, and the number of the second through holes (15) is eight.
4. A three-phase guide rail type electric energy meter according to claim 1, characterized in that the upper casing (1) is provided with a reversible transparent cover (17), the transparent cover (17) is provided with a square hole, and a lead sealing nose (16) is arranged on the main body below the transparent cover (17) at the position corresponding to the square hole of the transparent cover.
5. The three-phase guide rail type electric energy meter according to claim 1, wherein the main circuit board (2) is provided with a liquid crystal display (21) for displaying electric energy data of the electric energy meter, an indicator lamp (23) for displaying an alarm state, a voltage loss state and active electric energy pulses of the electric energy meter, a function button (22) for realizing parameter setting and checking of the electric energy meter and a main metering chip.
6. A three-phase track-type electric energy meter according to claim 1, wherein the main circuit board (2) is provided with a jack (24) for mounting a wireless communication module, a first opening (25) for reducing wireless signal attenuation, and a socket (26) for connecting the main circuit board with a power board.
7. The three-phase guide rail type electric energy meter as claimed in claim 1, wherein the power panel (3) is provided with a through hole (31) for fixing the power panel on the base, a contact pin (32) for realizing signal connection between the main circuit board and the power panel, an RS-485 communication port (33) for realizing data communication, a second opening (34) for passing a current sampling line and a voltage sampling plate (35).
8. The three-phase guide rail type electric energy meter according to claim 7, wherein there are two through holes (31), and there are two rows of pins (32).
9. The guide rail type electric energy meter of three phases as claimed in claim 1, wherein the base (4) is provided with a third opening (41) for leading out a power line, a fourth opening (42) for leading out an auxiliary terminal of the electric energy meter, an opening guide post (43) for fixing a power supply board, a copper conductor (44) for current circulation and a current transformer (45) for current sampling of a three-phase circuit.
10. The three-phase guide rail type electric energy meter according to claim 9, wherein the number of the third openings (41) is eight, the number of the fourth openings (42) is three, and the number of the opening guide posts (43) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806361.5U CN217787231U (en) | 2022-04-08 | 2022-04-08 | Three-phase guide rail type electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806361.5U CN217787231U (en) | 2022-04-08 | 2022-04-08 | Three-phase guide rail type electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217787231U true CN217787231U (en) | 2022-11-11 |
Family
ID=83907723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220806361.5U Active CN217787231U (en) | 2022-04-08 | 2022-04-08 | Three-phase guide rail type electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217787231U (en) |
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2022
- 2022-04-08 CN CN202220806361.5U patent/CN217787231U/en active Active
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