CN111929480A - Electric energy meter high-voltage invasion feed network structure and electric energy meter - Google Patents
Electric energy meter high-voltage invasion feed network structure and electric energy meter Download PDFInfo
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- CN111929480A CN111929480A CN202010884834.9A CN202010884834A CN111929480A CN 111929480 A CN111929480 A CN 111929480A CN 202010884834 A CN202010884834 A CN 202010884834A CN 111929480 A CN111929480 A CN 111929480A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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Abstract
The invention discloses an electric energy meter high-voltage invasion feed network structure and an electric energy meter, wherein the feed network structure is connected with a commercial power network and comprises the following components: a PCB board; at least four tip pads; an isolation circuit including an auxiliary terminal and an internal circuit; at least two most advanced pads are fixed in by the installation on the PCB board, four at least most advanced pads set up in pairs, most advanced pad intercommunication commercial power circuit, be equipped with two at least commercial power joints on the PCB board, two at least commercial power joints include first zero line joint and first live wire joint, wherein first live wire joint communicates a most advanced pad respectively with first zero line joint, the high pressure invasion is presented the network structure and is through setting up most advanced discharge pad to predetermine reasonable distance, when electric energy meter internal discharge voltage exceeded a definite value, the accessible most advanced discharge pad repays back to in the commercial power network.
Description
Technical Field
The invention relates to the field of electric energy meters, in particular to an electric energy meter high-voltage invasion feed network structure and an electric energy meter.
Background
At present there is some people in order to reach the purpose of personal interests among the reality, can adopt high-voltage equipment to connect the electric energy meter that has external joint and carry out high-voltage discharge, when the electric energy meter received high-tension current, cause the damage to electric energy meter self easily, current electric energy meter designs according to the IEC standard, inside includes isolating circuit, and inside isolating circuit can be isolated the interference to a certain extent, but when the outside voltage of exerting exceeded the bearing capacity of interval (6.5mm) when isolating circuit designs, the condition that auxiliary terminal and product internal circuit arc discharge still can appear, cause the product to damage.
Disclosure of Invention
One of the purposes of the invention is to provide an electric energy meter high-voltage invasion feed network structure and an electric energy meter, wherein the high-voltage invasion feed network structure is provided with a point discharge bonding pad, and a reasonable distance is preset, so that when the internal discharge voltage of the electric energy meter exceeds a certain value, the internal discharge voltage can be fed back to a commercial power network through the point discharge bonding pad.
The invention also aims to provide an electric energy meter high-voltage invasion feed network structure and an electric energy meter.
The invention also aims to provide an electric energy meter high-voltage invasion feed network structure and an electric energy meter.
The invention also aims to provide an electric energy meter high-voltage invasion feed network structure and an electric energy meter, wherein the high-voltage invasion feed network structure is simple, layout design is convenient to be carried out on a PCB (printed circuit board) in the electric energy meter, and the high-voltage invasion feed network structure can be simultaneously suitable for protection of high-voltage invasion of a multi-phase circuit.
In order to achieve at least one of the above objects, the present invention further provides a high voltage invading feed network structure of an electric energy meter, wherein the feed network structure is connected with a commercial power network, and the feed network structure comprises:
a PCB board;
at least four tip pads;
an isolation circuit including an auxiliary terminal and an internal circuit;
the at least two pointed end bonding pads are fixedly installed on the PCB, the at least four pointed end bonding pads are arranged in pairs, and the pointed end bonding pads are communicated with a mains supply circuit.
According to a preferred embodiment of the present invention, at least two commercial power connectors are disposed on the PCB, and the at least two commercial power connectors include a first neutral connector and a first live connector, wherein the first live connector and the first neutral connector are respectively connected to a tip pad.
According to a preferred embodiment of the present invention, the auxiliary terminals on the PCB board include a main auxiliary terminal, a first auxiliary terminal and a second auxiliary terminal, the first auxiliary terminal and the second auxiliary terminal are respectively connected to a tip pad, and the first auxiliary terminal and the second auxiliary terminal are respectively connected to the main auxiliary terminal.
According to a preferred embodiment of the present invention, the tip pad includes a first tip pad, a second tip pad, a third tip pad and a fourth tip pad, the first tip pad and the second tip pad are disposed opposite to each other, the first tip pad communicates with the first live wire connector, the second tip pad connects with the first auxiliary terminal, a feeding distance is disposed between the first tip pad and the second tip pad, the third tip pad communicates with the first neutral wire connector, the fourth tip pad connects with the second auxiliary terminal, and a feeding distance is disposed between the third tip pad and the fourth tip pad.
According to one preferred embodiment of the present invention, an isolation circuit is disposed between the internal circuit and the main auxiliary terminal, and an isolation distance is disposed between the internal circuit and the main auxiliary terminal, so that the isolation distance can be used for isolating a high-voltage invasive power supply.
According to one of the preferred embodiments of the present invention, the feeding distance is smaller than the isolation distance.
According to one of the preferred embodiments of the present invention, the isolation distance between the internal circuit and the main auxiliary terminal is 6.5 mm.
According to a preferred embodiment of the present invention, the auxiliary terminal is provided with a ground terminal of the PCB.
According to one of the preferred embodiments of the present invention, the feeding distance is 5.5 mm.
According to a preferred embodiment of the present invention, the PCB board may be provided with a multi-phase mains circuit connector, the multi-phase mains circuit connector includes a plurality of non-zero phase connectors and a zero phase connector, each phase mains circuit connector is connected to a tip pad, each phase connector is provided with an auxiliary terminal, each auxiliary terminal is provided with a tip pad, and the feeding distance is provided between the tip pad of each phase circuit and the tip pad of the corresponding auxiliary terminal.
In order to achieve at least one of the above objects, the present invention further provides an electric energy meter, wherein the electric energy meter adopts the high voltage invasive feed network structure of the electric energy meter.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another preferred embodiment of the present invention.
Wherein
The circuit comprises a PCB (printed circuit board) -10, a first live wire connector-11, a first zero wire connector-12, a first tip pad-21, a second tip pad-22, a third tip pad-23, a fourth tip pad-24, a main auxiliary terminal-30, a first auxiliary terminal-31, a second auxiliary terminal-32 and an internal circuit-40.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1-2, the present invention shows a high voltage intrusion feed network structure of an electric energy meter, where the feed network structure includes a PCB 10, a plurality of tip pads and an isolation circuit, the isolation circuit includes an internal circuit 40 and an auxiliary terminal, where the PCB 10 is connected to a mains supply circuit, and is used for supplying power to the internal circuit 40 on one hand, and on the other hand, when there is high voltage power intrusion, the mains supply circuit can be fed through the tip pads.
The mains circuit comprises a plurality of joints, the mains circuit joint comprises a first live wire joint, a first zero wire joint 12, the auxiliary terminal comprises a main auxiliary terminal 30, a first auxiliary terminal 31 and a second auxiliary terminal 32.
Specifically, referring to fig. 1, in a preferred embodiment of the present invention, a first live wire terminal 11 and a first neutral wire terminal 12 are disposed on the PCB, and the plurality of tip pads include a first tip pad 21, a second tip pad 22, a third tip pad 23 and a fourth tip pad 24, the first live wire terminal 11 is connected to the first tip pad 21, and the first neutral wire terminal 12 is connected to the second tip pad 22, wherein the first tip pad 21 and the second tip pad 22 are disposed opposite to each other, the first tip pad 21 and the second tip pad 22 respectively have pointed discharge tips, the two pointed discharge tips are disposed opposite to each other and mounted on the PCB 10, a distance between the two pointed discharge tips is a feeding distance between the first tip pad 21 and the second tip pad 22, and the feeding distance is also a shortest distance between the first tip pad 21 and the second tip pad 22. Third tip pad 23 intercommunication first zero line connects 12, fourth tip pad 24 is connected second auxiliary terminal 32, wherein first auxiliary terminal 31 and second auxiliary terminal 32 are connected respectively main auxiliary terminal 30, set up feed distance between the pointed shape discharge tip of third tip pad 23 and fourth tip pad 24, be equipped with isolation distance between internal circuit 40 and the main auxiliary terminal 30, isolation distance can avoid high voltage power supply input to cause the damage to internal circuit 40. The feeding distance is set to be smaller than the isolation distance, when an external high-voltage power supply discharges the electric energy meter, due to the fact that the feeding distance is smaller than the isolation distance, an arc-drawing current is formed between the first tip pad 21 and the second tip pad 22, and between the third tip pad 23 and the fourth tip pad 24, preferably between the internal circuit 40 and the auxiliary terminal, so that the external high-voltage power supply directly feeds the commercial power circuit through the first tip pad 21 and the second tip pad 22, and the third tip pad 23 and the fourth tip pad 24, and the internal circuit 40 of the electric energy meter is prevented from being damaged by the high-voltage current.
It should be noted that in a preferred embodiment of the present invention, the electric energy meter on the market is designed based on IEC standard, so that the isolation distance between the internal circuit 40 and the main auxiliary terminal 30 in the isolation circuit is generally 6.5mm, so that the present invention is designed based on the existing standard, the feeding distance is preferably set to 5.5 mm, and the second tip pad 22 and the fourth tip pad 24 are designed close to the auxiliary terminal, so as to facilitate the tip pad feeding.
It should be noted that, in the above preferred embodiment, the electric energy meter high-voltage invading feed network structure of the single-phase mains circuit is described, in another preferred embodiment of the present invention, please refer to fig. 2, the electric energy meter high-voltage invading feed network structure of the multi-phase circuit can be designed, the PCB board is provided with A, B, C-phase mains circuit and the corresponding connector of the N-phase circuit, wherein the N-phase is the zero-phase circuit, each phase of the mains circuit has different voltages, a tip pad is respectively arranged on the A, B, C and the N-phase connector, the corresponding tip pad is A, B, C and N, at the same time, four auxiliary terminals extend from the main auxiliary terminal DM, each auxiliary terminal is provided with a tip pad, and the corresponding tip pad is DM1、DM2、DM3、DM4Wherein the tip pad A and the tip pad DM corresponding to the commercial power circuit1Oppositely arranged, tip pad B and tip pad DM2Oppositely arranged, tip pad C and tip pad DM3Oppositely arranged, tip pad N and tip pad DM4The high-voltage invading power supply is oppositely arranged, and a feeding distance is arranged between each pair of oppositely arranged point pad discharging points, wherein the feeding distance is smaller than the isolation distance between the internal circuit and the main auxiliary terminal DM, so that the high-voltage invading power supply can directly feed to a multi-phase mains supply circuit.
It will be understood by those skilled in the art that the embodiments of the present invention described above and illustrated in the drawings are given by way of example only and not by way of limitation, the objects of the invention having been fully and effectively achieved, the functional and structural principles of the present invention having been shown and described in the embodiments, and that various changes or modifications may be made in the embodiments of the present invention without departing from such principles.
Claims (10)
1. The utility model provides an electric energy meter high pressure invasion is presented net structure, it connects the commercial power network to present net structure, its characterized in that includes:
a PCB board;
at least four tip pads;
an isolation circuit including an auxiliary terminal and an internal circuit;
the at least two pointed end bonding pads are fixedly installed on the PCB, the at least four pointed end bonding pads are arranged in pairs, and the pointed end bonding pads are communicated with a mains supply circuit.
2. The high-voltage invasion feed network structure of the electric energy meter according to claim 1, wherein at least two mains supply joints are arranged on the PCB, the at least two mains supply joints comprise a first zero line joint and a first live line joint, and the first live line joint and the first zero line joint are respectively communicated with a tip end bonding pad.
3. The electric energy meter high-voltage intrusion feed network structure according to claim 2, wherein the auxiliary terminals on the PCB board comprise a main auxiliary terminal, a first auxiliary terminal and a second auxiliary terminal, the first auxiliary terminal and the second auxiliary terminal are respectively connected with a tip pad, and the first auxiliary terminal and the second auxiliary terminal are respectively connected with the main auxiliary terminal.
4. The high-voltage invasion feed network structure of the electric energy meter according to claim 3, wherein the tip pads comprise a first tip pad, a second tip pad, a third tip pad and a fourth tip pad, the first tip pad and the second tip pad are arranged oppositely, the first tip pad is communicated with the first live wire joint, the second tip pad is connected with the first auxiliary terminal, a feed distance is arranged between the first tip pad and the second tip pad, the third tip pad is communicated with the first neutral wire joint, the fourth tip pad is connected with the second auxiliary terminal, and a feed distance is arranged between the third tip pad and the fourth tip pad.
5. The electric energy meter high-voltage invasion feed network structure according to claim 4, wherein an isolation circuit is arranged between the internal circuit and the main auxiliary terminal, an isolation distance is arranged between the internal circuit and the main auxiliary terminal, and the isolation distance can be used for isolating a high-voltage invasion power supply.
6. The high voltage invasive feed network structure of electric energy meter according to claim 5, wherein the feed distance is less than the isolation distance.
7. The electric energy meter high-voltage invasion feed network structure according to claim 1, wherein a ground wire connector of the PCB is arranged on the main auxiliary terminal.
8. The high-voltage invasive feed network structure of an electric energy meter according to claim 4, wherein the feed distance is 5.5 mm.
9. The high-voltage invasion feed network structure of the electric energy meter according to claim 4, wherein the PCB board is provided with a multi-phase mains supply circuit connector, the multi-phase mains supply circuit connector comprises a plurality of non-zero phase connectors and a zero phase connector, each phase mains supply circuit connector is connected with a tip pad, each phase connector is provided with an auxiliary terminal, each auxiliary terminal is provided with a tip pad, and the feed distance is set between the tip pad of each phase circuit and the tip pad of the corresponding auxiliary terminal.
10. An electric energy meter, characterized in that the electric energy meter adopts the high voltage intrusion feed network structure of the electric energy meter according to any one of the claims 1 to 9.
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| CN202010884834.9A CN111929480B (en) | 2020-08-28 | 2020-08-28 | Electric energy meter high-voltage invasion net feeding structure and electric energy meter |
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| CN202010884834.9A CN111929480B (en) | 2020-08-28 | 2020-08-28 | Electric energy meter high-voltage invasion net feeding structure and electric energy meter |
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| CN111929480B CN111929480B (en) | 2023-05-30 |
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