CN210863829U - Electric energy meter suitable for multichannel measurement - Google Patents
Electric energy meter suitable for multichannel measurement Download PDFInfo
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- CN210863829U CN210863829U CN201920778434.2U CN201920778434U CN210863829U CN 210863829 U CN210863829 U CN 210863829U CN 201920778434 U CN201920778434 U CN 201920778434U CN 210863829 U CN210863829 U CN 210863829U
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Abstract
The utility model relates to an electric energy meter suitable for multichannel measurement, including the casing, be located the circuit board of casing and be located the terminal box of casing one end, its characterized in that: the terminal box comprises a live wire incoming wire main port and a plurality of live wire outgoing wire branch ports, the live wire incoming wire main port is externally connected with a mains supply live wire and an internally connected main conductor, each live wire outgoing wire branch port is externally connected with an indoor live wire and an internally connected branch conductor, the main conductor is electrically connected with a plurality of branch conductors, and each branch conductor is provided with a sampling device which is used for collecting current signals and is correspondingly connected with the circuit board. The electric energy meter can realize multiple users and one meter, saves the installation space of the electric energy meter and reduces the total cost of the multiple users.
Description
Technical Field
The utility model relates to an electric energy meter technical field especially relates to an electric energy meter suitable for multichannel measurement.
Background
The electric energy meter is widely applied to an electric power system as an electric power consumption metering device. The existing electric energy meters are usually installed in a one-user-one-meter mode, so that a plurality of single-phase electric energy meters are needed to be installed to measure the electricity utilization conditions of different users in places with more users such as residential buildings.
Each single-phase electric energy meter is provided with a live wire incoming wire and a live wire outgoing wire, the incoming wires and the outgoing wires are correspondingly connected with internal devices of the electric energy meters through copper sheets, if 12 users exist in a building, 12 single-phase electric energy meters need to be installed, at least 24 live wire incoming and outgoing copper sheets need to be consumed, and therefore the electric energy meter installation occupies a large space and is high in cost.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide an electric energy meter suitable for multi-path metering, which saves space and cost.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides an electric energy meter suitable for multichannel measurement, includes the casing, is located the circuit board of casing and is located the terminal button box of casing one end, its characterized in that:
the terminal box comprises a live wire incoming wire main port and a plurality of live wire outgoing wire branch ports, the live wire incoming wire main port is externally connected with a mains supply live wire and an internally connected main conductor, each live wire outgoing wire branch port is externally connected with an indoor live wire and an internally connected branch conductor, the main conductor is electrically connected with a plurality of branch conductors, and each branch conductor is provided with a sampling device which is used for collecting current signals and is correspondingly connected with the circuit board.
Furthermore, each branch conductor is connected with a switch piece in series for controlling the connection and disconnection of the live wire entering the house, and the switch piece is positioned between the sampling device and the live wire outlet branch port.
Furthermore, the main conductor and the branch conductors are in the shape of a strip and are arranged on the inner side of the terminal button box in parallel, and the free end of the main conductor is fixedly connected with the free ends of the branch conductors through strip conductors.
Further, the cross-sectional area of the main conductor is larger than that of the branch conductors.
Furthermore, the branch conductors are arranged on two sides of the main conductor, and upward bent parts are arranged on the main conductor to provide accommodating spaces for the sampling devices on two sides.
Furthermore, a detection line for detecting the on-off state of the switch element is connected to the branch conductor between the live wire outlet branch port and the switch element, and the detection line is connected with the circuit board.
Further, the main conductor and the strip conductor as well as the branch conductor and the strip conductor are fixed through welding, riveting or screws.
Furthermore, the sampling device is a current transformer, and two secondary outgoing lines of the current transformer are connected with the circuit board.
Furthermore, the switch is a magnetic latching relay, and a control line for controlling the on-off of the magnetic latching relay is led out of the magnetic latching relay.
Furthermore, the main conductor, the branch conductors and the strip conductors are made of copper materials.
Compared with the prior art, the utility model has the advantages of: the end button box is provided with only one live wire incoming line main port and a plurality of live wire outgoing line branch ports, and through the total-branch action of a main conductor and a branch conductor, one path of commercial power is well distributed to multiple households through the branch ports so as to measure the power consumption of each user; each branch port is provided with a sampling device, so that accurate metering of the electricity consumption of each household can be realized, a plurality of households and a meter can be realized, and the installation space and a large amount of installation cost of the electric energy meter can be saved; and each branch port is provided with a relay corresponding to the branch port, so that power-off or power-supply operation can be performed on corresponding users according to needs, and the accuracy of power utilization measurement is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the electric energy meter of the present invention.
Fig. 2 is a schematic diagram of the connection structure of the terminal box, the sampling device, the switch, the main conductor, the branch conductor and other components in the electric energy meter of the present invention.
Fig. 3 is a schematic diagram of the exploded structure of fig. 2.
Fig. 4 is a schematic block diagram of the multi-path measurement of the electric energy meter 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 an embodiment structure schematic diagram, this kind of electric energy meter suitable for multichannel measurement include casing 1, be located the circuit board of casing (because have circuit board and terminal button box electricity to be connected in the electric energy meter, belong to the well-known content in this field, so the circuit board is not shown in the figure) and be located terminal button box 2 of 1 one end of casing, terminal button box 2 includes a live wire inlet wire main port 21 and a plurality of live wire outlet branch port 22, the external commercial power live wire of live wire inlet wire main port 21, the internal connection main conductor 3, the live wire outlet divides external access family live wire of port 22, internal connection branch conductor 4, main conductor 3 is connected with a plurality of branch conductors 4 electricity, be equipped with on the branch conductor 4 and be used for gathering current signal and correspond the sampling device 5 who is connected with.
Obviously, the terminal box 2 is also provided with a null line incoming line port and a null line outgoing line port, and is also based on the principle of saving materials, the terminal box 2 in the present application adopts the same design as the live line port, that is, includes a null line incoming line main port 23 and null line outgoing line branch ports 24 with the same number as the live line outgoing line branch ports 22, the null line incoming line main port 23 is externally connected with the commercial power null line, the null line outgoing line branch ports 24 are externally connected with the user's home-entry null line, and the null line incoming line main port 23 is also communicated with the plurality of null line outgoing line branch ports 24. However, for the convenience of description and simplification of the composition, only the fire wire port is used as an object for explanation, and only the fire wire port and the neutral wire port are shown in the drawings, and the connection between the neutral wire ports is omitted. It goes without saying that the live and neutral wires of the utility power supply are also connected to the circuit board of the electric energy meter through transformers to supply electric energy for the operation of the electric energy meter, but these are well known to those skilled in the art and thus are not cumbersome here.
In this embodiment, the main conductor 3 and the branch conductor 4 are both copper bars, and obviously, in order to ensure the safety and stability of the whole electric energy meter, the cross-sectional area of the main conductor 3 is larger than that of the branch conductor 4, so that the requirement that the main conductor 3 collects currents of the multiple branch conductors 4 can be met, and the main conductor 3 is prevented from being burnt due to excessive currents.
The live wire inlet port and the live wire outlet port in the terminal box 2 in the past are in one-to-one correspondence, the improvement is that only one live wire inlet main port 21 and a plurality of live wire outlet branch ports 22 are arranged on the terminal box 2, one commercial power live wire is connected with a main copper bar and is also connected with a main conductor 3 after being connected into the live wire inlet main port 21, and then the branch ports 22 are also connected with branch conductors through branch copper bars connected with each branch port, and a user live wire is pulled out from the branch ports and is connected with a user wiring to measure the power consumption of each user. The design reduces the number of copper strips adopted by the house entrance live wire in actual use and saves the production cost while distributing one path of commercial power to a plurality of houses through the design of bus-branching; and each live wire outlet branch port 22 is provided with a sampling device 5, so that accurate measurement of the power consumption of each household can be realized, a plurality of households and a single meter can be realized, and the installation space and a large amount of installation cost of the electric energy meter can be saved.
In other words, by adopting the electric energy meter of the application, after the mains supply is connected into the electric energy meter through the inlet main port, the mains supply can be divided into multiple paths and respectively connected into multiple households, as shown in fig. 4, a current sampling device is arranged on each path to collect current signals, the sampled current signals are sent to devices such as an MCU (microprogrammed control unit) on a circuit board to perform data processing and metering display, so that the multiple households and one meter can be realized, and the space and the installation cost required by the installation of the electric energy meter are greatly saved.
Meanwhile, it should be mentioned that, because one electric energy meter of the present application needs to measure and sample the power consumption of a plurality of users, the internal structure of the electric energy meter of the present application may be slightly adjusted and changed compared with the conventional electric energy meter. The current single-phase electric energy meter only carries the sampling signal of the same way to MCU and handles and show, the MCU of this application electric energy meter then has four ways sampling signal, for the needs that show, as the technical personnel in the field, think very easily, can show multichannel electric energy measurement data through ways such as wheel demonstration, and this only need increase simple AND gate circuit and carry out corresponding adjustment to electric energy meter internal program in original circuit can, of course, under the condition that MCU vacant foot is enough, also can be through changing bigger display screen in order to realize multichannel demonstration simultaneously.
As an improvement, in this embodiment, a switch element for controlling the on/off of the live line to the home is connected in series to the branch conductor 4, and the switch element is located between the sampling device 5 and the live line outgoing branch port 22. Set up the switch spare on every branch conductor 4, can control respectively, independently measure the power consumption break-make of every family for electric energy meter use control is more convenient. As a conventional option of the electric energy meter, the switch part 6 is a magnetic latching relay, a control line 61 for controlling the on-off of the magnetic latching relay is led out of the magnetic latching relay, and the control line 61 is connected with the MCU on the circuit board and controlled by the MCU.
In this embodiment, the main conductor 3 and the branch conductors 4 are in the shape of a bar and are arranged in parallel inside the terminal button box 2, and the free end of the main conductor 3 is fixedly and electrically connected with the free ends of the branch conductors 4 through the bar conductors 7. The main conductor 3, the branch conductor 4 and the strip conductor 7 can be electrically connected in various forms, such as welding, riveting, screw connection and the like, and similarly, in order to save electricity and ensure the safety performance of the electric energy meter, the strip conductor 7 is also made of copper material. In this embodiment, the branch conductors 4 are arranged on two sides of the main conductor 3, and the main conductor 3 has an upward bending portion 31 to provide an accommodating space for the sampling devices 5 on two sides. Through bending the main conductor 3 upwards to form the bending part 31, the sampling device 5 on both sides of the main conductor can be partially arranged below the bending part 31, so that the sampling device 5 can be more compactly installed, and the whole volume of the electric energy meter is reduced.
As described above, in this embodiment, it is preferable that the number of the live line outgoing branch ports 22 is 4, and the live line outgoing branch ports are uniformly distributed on both sides of the live line incoming line main port 21, and correspondingly, the number of the zero line outgoing branch ports 24 is also 4, and the zero line outgoing branch ports are also uniformly distributed on both sides of the zero line incoming line main port 23.
The following description will be made by taking a residential building with 12 residents as an example. According to current electric energy meter design, a single electric energy meter has a live wire incoming line port and live wire outgoing line port, a zero line incoming line port and zero line outgoing line port, and every port all need correspond a copper bar, and an electric energy meter needs 1 circuit board at least, an MCU, and 12 electric energy meters need to be installed altogether to this building, adopts 48 at least, 12 circuit boards of copper bar number and 12 MCU. If utilize the multichannel measurement electric energy meter of this application, when adopting 4 electric energy meters of branch port design as required, whole building only needs 3 electric energy meters can satisfy the demand like this, only 2 total incoming line ports and 8 branch ports of being qualified for the next round of competitions in a table, then only need 10 copper bars in a table, that this building only needs 30 copper bars, 3 circuit boards and 3 MCU can, compare in current electric energy meter design, 18 copper bars have been saved, it is obvious, the electric energy meter of this application will save production raw and other materials greatly in the project is general, and production cost is reduced.
Moreover, according to experimental experience, the electric energy meter can save more than 30% of installation space, and more importantly, along with the expansion and upgrading of the wire outlet port, the space can be further saved. Certainly, need mention, still need acquire voltage signal to the electric energy inlet wire measurement, directly adopt current voltage sampling mode to sample in this application, for example live wire inlet wire and zero line inlet wire draw forth a wire to the circuit board respectively, after voltage signal divides the voltage through divider resistance, the measurement chip samples and obtains the line voltage value. Of course, the live wire outlet port of the present application can be adjusted according to actual needs, for example, 2, 3, 5, etc., and the larger the number is, the more favorable the saving of the overall production cost is, but also needs to be determined according to the internal processing capacity of the electric energy meter.
In this embodiment, the branch conductor 4 between the live wire outgoing branch port 22 and the switch element 6 is connected with a detection line 41 connected to the circuit board and used for detecting the on-off state of the switch element, and whether the switch element is turned on or off can be determined by detecting whether the detection line 41 is electrified, which is convenient to operate. The detection wire 41 is fixed to the branch conductor 4 by welding, screw crimping, or the like.
In this embodiment, the sampling device 5 is a current transformer, and two secondary outgoing lines 51 of the current transformer are connected with the circuit board and transmit sampling signals to a metering chip on the circuit board for corresponding processing. Of course the sampling device may also be a manganin sampling device.
It is conceivable that the electric energy meter of the present application further includes a meter cover 8, an end cover 9, a display module, and other structures, which are not in the scope of protection of the present application because these structures belong to the prior art, and the middle of the present embodiment is described in detail.
While embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an electric energy meter suitable for multichannel measurement, includes casing (1), is located the circuit board of casing (1) and is located terminal button box (2) of casing (1) one end which characterized in that:
terminal button box (2) are qualified for the next round of competitions branch port (22) including a live wire inlet wire total port (21) and a plurality of live wires, the total port of live wire inlet wire (21) external commercial power live wire, the internal connection main conductor (3), and every live wire is qualified for the next round of competitions and is divided port (22) external live wire, internal connection branch conductor (4) of registering one's residence, main conductor (3) are connected with a plurality of branch conductor (4) electricity, are equipped with on every branch conductor (4) to be used for gathering current signal and correspond sampling device (5) of being connected with the circuit board.
2. The electric energy meter of claim 1, wherein:
each branch conductor (4) is connected with a switch (6) in series for controlling the connection and disconnection of the live wire of the house, and the switch (6) is positioned between the sampling device and the live wire outlet branch port (22).
3. The electric energy meter of claim 1, wherein:
the main conductor (3) and the branch conductors (4) are in a strip shape and are arranged in parallel on the inner side of the terminal button box (2), and the free end of the main conductor (3) is fixedly connected with the free ends of the branch conductors (4) through strip conductors (7).
4. The electric energy meter of claim 3, wherein:
the cross-sectional area of the main conductor (3) is larger than that of the branch conductor (4).
5. The electric energy meter of claim 4, wherein:
the branch conductors (4) are arranged on two sides of the main conductor (3) and are provided with upward bent parts (31) on the main conductor (3) so as to provide accommodating spaces for the sampling devices on two sides.
6. The electric energy meter of claim 2, wherein:
and a branch conductor (4) between the live wire outlet branch port (22) and the switch piece (6) is connected with a detection line (41) for detecting the on-off state of the switch piece (6), and the detection line (41) is connected with the circuit board.
7. The electric energy meter of claim 3, wherein:
the main conductor (3) and the strip conductor (7) as well as the branch conductor (4) and the strip conductor (7) are fixed through welding, riveting or screws.
8. The electric energy meter of claim 1, wherein:
the sampling device (5) is a current transformer, and two secondary outgoing lines (51) of the current transformer are connected with the circuit board.
9. The electric energy meter of claim 2, wherein:
the switch piece (6) is a magnetic latching relay, and a control wire (61) for controlling the on-off of the magnetic latching relay is led out of the magnetic latching relay.
10. The electric energy meter of claim 3, wherein:
the main conductor (3), the branch conductors (4) and the strip conductors (7) are made of copper materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778434.2U CN210863829U (en) | 2019-05-27 | 2019-05-27 | Electric energy meter suitable for multichannel measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920778434.2U CN210863829U (en) | 2019-05-27 | 2019-05-27 | Electric energy meter suitable for multichannel measurement |
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| CN210863829U true CN210863829U (en) | 2020-06-26 |
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| CN201920778434.2U Active CN210863829U (en) | 2019-05-27 | 2019-05-27 | Electric energy meter suitable for multichannel measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095640A (en) * | 2019-05-27 | 2019-08-06 | 宁波三星医疗电气股份有限公司 | A kind of electric energy meter suitable for multiple metering |
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- 2019-05-27 CN CN201920778434.2U patent/CN210863829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095640A (en) * | 2019-05-27 | 2019-08-06 | 宁波三星医疗电气股份有限公司 | A kind of electric energy meter suitable for multiple metering |
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