CN210155186U - Electric energy meter convenient to consumption detects - Google Patents
Electric energy meter convenient to consumption detects Download PDFInfo
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- CN210155186U CN210155186U CN201920161073.7U CN201920161073U CN210155186U CN 210155186 U CN210155186 U CN 210155186U CN 201920161073 U CN201920161073 U CN 201920161073U CN 210155186 U CN210155186 U CN 210155186U
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Abstract
The utility model relates to an electric energy meter convenient to consumption detects, be in including base (1), setting PCB mainboard (2) on base (1), be located between base (1) and PCB mainboard (2) and with PCB mainboard (2) are towards the relay that the one side electricity of base (1) is connected, its characterized in that: PCB mainboard (2) are kept away from the one side of base (1) and are equipped with live wire seat (21), by live wire (22) that stretch out on the relay with live wire seat (21) can dismantle the connection, by zero line (23) that the relay was drawn forth are connected with PCB mainboard (2) electricity. The utility model discloses a convenience is dismantled to the electric energy meter live wire, is convenient for insert the complete machine consumption that consumption detection device detected the electric energy meter.
Description
Technical Field
The utility model relates to a power equipment field especially relates to an electric energy meter convenient to consumption detects.
Background
When the existing electric energy meter obtains the working voltage, the following structure is often adopted: the commercial power is acted by the relay and the current transformer, then the live wire and the zero line led out by the relay terminal are directly welded on the circuit board, and the commercial power is converted into working voltage through the operations of voltage reduction and voltage stabilization of a subsequent power supply circuit and the like.
Although this kind of design is simple and convenient, but live wire and circuit board welded mode for some school tables can't conveniently detect the electric energy meter consumption, only can weld the live wire from the circuit board earlier, then establish ties consumption detection part between live wire and PCB board, detect the completion back, weld the live wire again, complex operation, more importantly, many circuits have been welded in many times on the circuit board, when the live wire is desoldered, cause other circuit desolders, short circuit or short circuit because of improper operation very easily, influence the electric energy meter and normally use, cause the safety problem.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the utility model is to provide an electric energy meter convenient to consumption detects has improved the operational safety nature, has reduced complex operation degree.
In order to achieve the above purpose, the technical solution protected by the present invention is an electric energy meter convenient for power consumption detection, comprising,
a base;
the PCB mainboard is arranged on the base;
the relay is positioned between the base and the PCB main board and is electrically connected with one surface of the PCB main board facing the base;
the method is characterized in that:
the PCB mainboard is equipped with the live wire seat in the one side of keeping away from the base, by the live wire that stretches out on the relay with the live wire seat can be dismantled and be connected, by the zero line that the relay was drawn forth is connected with PCB mainboard electricity.
Furthermore, the free end of the live wire is provided with an annular conducting strip, and the annular conducting strip is fixedly connected with the live wire seat in a compression joint mode through a screw.
Furthermore, the live wire seat comprises a top plate and two plug pins, the plug pins are arranged on two opposite sides of the top plate, through holes for screws to penetrate and fasten the annular conducting strips are formed in the top plate, and the plug pins are inserted into the PCB main board and fixed through welding.
Further, the top plate and the pins are integrally formed.
Furthermore, the zero line and the PCB main board are fixed through welding.
Further, the power supply circuit for providing the working voltage for the electric energy meter on the PCB mainboard is:
the power supply circuit comprises a strong current input protection module and a weak current rectification output module, the strong current input protection module can be used for connecting a live wire and a zero wire, the weak current rectification output module can provide working voltage for the electric energy meter, and a step-down transformer T1 is arranged between the strong current input protection module and the weak current rectification output module.
Further, the heavy current input protection module comprises a live wire terminal L and a zero wire terminal N which are connected with the input side of the step-down transformer, a thermistor RT1 is connected between the live wire terminal L and the input side of the step-down transformer in series, and a piezoresistor RV1 is connected between the live wire terminal L and the zero wire terminal N in parallel.
Further, the weak current rectification output module comprises a rectification bridge N1 connected with the output side of the step-down transformer T1 to output working voltage, an electrolytic capacitor CE1 connected between the output ends of the rectification bridge N1 in parallel and a filter capacitor C1.
Compared with the prior art, the utility model has the advantages of: need improve through welding mode and PCB mainboard connection with the live wire in the past and do, set up the live wire seat on the PCB mainboard, design into cyclic annular conducting strip with the live wire free end, be connected with the live wire seat through the screw, it takes off the live wire and can insert consumption detection device to loosen the screw, it can accomplish being connected of live wire and PCB mainboard to twist the screw after finishing detecting, it is very convenient to make electric energy meter complete machine consumption detection operation, some school table have been overcome before consumption detection in the past, need to desolder the live wire and probably lead to the safety problem that other circuits desolder or even short circuit cause because of misoperation.
Drawings
Fig. 1 is a schematic diagram of an explosion structure of an embodiment of the electric energy meter of the present invention.
Fig. 2 is a schematic diagram of the structure of the live wire seat in fig. 1.
FIG. 3 is a schematic diagram of the hot wire and the ring-shaped conductive sheet of FIG. 1.
Fig. 4 is a schematic diagram of a power supply circuit of the electric energy meter according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the utility model discloses a structural schematic diagram, this electric energy meter include base 1, set up PCB mainboard 2 on the base, be located between base 1 and PCB mainboard 2 and with PCB mainboard 2 is towards the relay (not shown in the figure) that the one side electricity of base is connected, PCB mainboard 2 is kept away from and is equipped with live wire seat 21 in the one side of base 1, by live wire 22 that stretches out on the relay with live wire seat 21 can dismantle the connection, by zero line 23 that the relay was drawn forth is connected with PCB mainboard 2 electricity.
Preferably, the free end of the live wire 22 is provided with an annular conductive piece 221, and the annular conductive piece 221 is fixed to the live wire seat 21 by pressing with a screw 24. Adopt this kind of design, when needs carry out the consumption and examine time measuring, loosen the screw and take off the live wire and can insert consumption detection device, twist the screw after the detection finishes and can accomplish being connected of live wire and PCB mainboard for electric energy meter complete machine consumption detection operation is very convenient, before having overcome the consumption detection in the past, need to desolder the live wire and probably lead to the safety problem that other circuits desolder or even short circuit cause because of misoperation.
Of course, the electric energy meter of this application still include with base 1 lid closes and is used for sealing base 1's upper cover 3, setting are in terminal box 4, the tail-hood 5 isotructure that is used for sealing of terminal box 4 of base 1 one end, because these structures all belong to prior art, do not describe in detail in this application.
In this embodiment, the fire wire holder 21 includes a top plate 211 and two pins 212, the pins 212 are disposed on two opposite sides of the top plate 211, a through hole for a screw 24 to pass through and fasten the annular conductive sheet 221 is disposed on the top plate 211, and the pins 212 are inserted into the PCB main board 2 and fixed by welding. By adopting the structure, the material consumption amount during the processing of the fire wire seat can be saved, thereby saving the cost.
Preferably, the top plate 211 is integrally formed with the plug 212, so that the production process and installation of the firewire holder are very convenient.
Preferably, the neutral wire 23 is fixed to the PCB main board 2 by welding. Meanwhile, in this embodiment, the zero line 23 bypasses the side of the PCB main board 2 away from the base 1, that is, the front side of the bypassed PCB main board 2 is welded to the PCB main board 2, and obviously, the zero line may also be welded to the back side of the PCB main board 2.
Fig. 4 shows a power supply circuit for providing working voltage for the electric energy meter on the PCB main board, where the power supply circuit includes a strong current input protection module 6 for connecting live wires and zero wires and a weak current rectification output module 7 for providing working voltage for the electric energy meter, and a step-down transformer T1 is disposed between the strong current input protection module 6 and the weak current rectification output module 7. Because the commercial power is 220V or 380V mostly, after stepping down through step-down transformer T1, can provide low-voltage electricity such as 15V for the electric energy meter to satisfy the operating requirement of electric energy meter.
In this embodiment, the strong power input protection module 6 includes a live wire terminal L and a null wire terminal N connected to the input side of the step-down transformer T1, a thermistor RT1 is connected in series between the live wire terminal L and the input side of the step-down transformer T1, a varistor RV1 is connected in parallel between the live wire terminal L and the null wire terminal N, and the thermistor RT1 and the thermistor RV1 are respectively used for preventing the electric energy meter from being damaged by high voltage and surge. The weak current rectification output module 7 comprises a rectification bridge N1 connected with the output side of the step-down transformer T1 to output working voltage, an electrolytic capacitor CE1 connected between the output ends of the rectification bridge N1 in parallel and a filter capacitor C1. In the embodiment, the thermistor RV1 is a 14KAC420 type thermistor, the thermistor RT1 is a PTC500 Ω -800 Ω type thermistor, the electrolytic capacitor CE1 is a 470uF35V type capacitor, the filter capacitor C1 is 0.1uF50V, the rectifier bridge N1 is a rectifier chip MB4S, and the step-down transformer T1 is a T28LB1-220D/a01 type.
In addition to the above-mentioned modifications, other similar modifications are also included in the scope of the present invention, and are not described herein again. While embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that: many changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims (8)
1. An electric energy meter convenient for power consumption detection comprises,
a base (1);
a PCB main board (2) arranged on the base (1);
the relay is positioned between the base (1) and the PCB main board (2) and is electrically connected with one surface of the PCB main board (2) facing the base (1);
the method is characterized in that:
PCB mainboard (2) are kept away from the one side of base (1) and are equipped with live wire seat (21), by live wire (22) that stretch out on the relay with live wire seat (21) can dismantle the connection, by zero line (23) that the relay was drawn forth are connected with PCB mainboard (2) electricity.
2. The electric energy meter of claim 1, wherein:
the free end of the live wire (22) is provided with an annular conducting strip (221), and the annular conducting strip (221) is fixedly connected with the live wire seat (21) in a pressing mode through a screw (24).
3. The electric energy meter of claim 2, wherein:
the live wire seat (21) comprises a top plate (211) and two plug pins (212), the plug pins (212) are arranged on two opposite sides of the top plate (211), through holes for screws (24) to penetrate and fasten the annular conducting strips (221) are formed in the top plate (211), and the plug pins (212) are inserted into the PCB main board (2) and fixed through welding.
4. The electric energy meter of claim 3, wherein:
the top plate (211) is integrally formed with the pins (212).
5. The electric energy meter of claim 1, wherein:
and the zero line (23) and the PCB main board (2) are fixed through welding.
6. The electric energy meter according to any one of claims 1 to 5, wherein:
the power supply circuit for providing working voltage for the electric energy meter on the PCB mainboard comprises a strong current input protection module (6) capable of supplying the connection of a live wire (22) and a zero wire (23) and a weak current rectification output module (7) for providing the working voltage for the electric energy meter, wherein a step-down transformer T1 is arranged between the strong current input protection module (6) and the weak current rectification output module (7).
7. The electric energy meter of claim 6, wherein:
the strong current input protection module (6) comprises a live wire terminal L and a zero wire terminal N which are connected with the input side of a step-down transformer T1, wherein a thermistor RT1 is connected between the live wire terminal L and the input side of the step-down transformer T1 in series, and a piezoresistor RV1 is connected between the live wire terminal L and the zero wire terminal N in parallel.
8. The electric energy meter of claim 6, wherein:
the weak current rectification output module (7) comprises a rectification bridge N1 connected with the output side of a step-down transformer T1 to output working voltage, an electrolytic capacitor CE1 connected between the output ends of the rectification bridge N1 in parallel and a filter capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161073.7U CN210155186U (en) | 2019-01-30 | 2019-01-30 | Electric energy meter convenient to consumption detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161073.7U CN210155186U (en) | 2019-01-30 | 2019-01-30 | Electric energy meter convenient to consumption detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210155186U true CN210155186U (en) | 2020-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920161073.7U Active CN210155186U (en) | 2019-01-30 | 2019-01-30 | Electric energy meter convenient to consumption detects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210155186U (en) |
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2019
- 2019-01-30 CN CN201920161073.7U patent/CN210155186U/en active Active
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