CN112904065B - Electric energy meter capable of automatically cutting off power supply in case of abnormal power supply - Google Patents
Electric energy meter capable of automatically cutting off power supply in case of abnormal power supply Download PDFInfo
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- CN112904065B CN112904065B CN202110331215.1A CN202110331215A CN112904065B CN 112904065 B CN112904065 B CN 112904065B CN 202110331215 A CN202110331215 A CN 202110331215A CN 112904065 B CN112904065 B CN 112904065B
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 5
- 230000000875 corresponding effect Effects 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 210000005036 nerve Anatomy 0.000 description 1
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
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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
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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Abstract
The invention discloses an electric energy meter capable of automatically cutting off power supply in case of abnormal power supply, which comprises a meter shell and a meter cover, wherein the meter cover is hinged with the open end of the meter shell; the inner cavity of the watchcase is provided with a metering chip, an opening and closing mechanism and a fixed seat; the metering chip is arranged at the upper part of the inner cavity of the shell, the fixed seat is arranged at the lower part of the inner cavity of the shell, and the opening and closing mechanism is arranged at the middle part of the inner cavity of the shell; the bottom end surface of the watch case is provided with a plurality of wire inlet holes penetrating into the inner cavity of the watch case; the fixed seat is an insulating seat, a wire inserting groove corresponding to the plurality of wire inlet holes is formed in the side face of the fixed seat, and a wiring terminal is arranged in the wire inserting groove; according to the invention, the current and voltage values are detected through the monitoring module, the detection process is simple and easy to realize, power supply abnormity judgment is carried out, the detection module feeds the abnormity information back to the MCU, the MCU controls the electric cylinder to execute corresponding actions, and the electric cylinder pulls the ferrule and enables the two plugs and the two conductive columns to be correspondingly separated, so that automatic power-off is realized, and the use safety of the electric load equipment is protected.
Description
Technical Field
The invention relates to the technical field of electric energy meters, in particular to an electric energy meter capable of automatically cutting off power supply in case of abnormal power supply.
Background
The electric energy meter is used for measuring electric energy and is used as data terminal equipment at the tail end of the whole power grid, the position of the whole power grid is similar to that of a human neural network terminal, and information is collected to form the most sensitive judgment basis of central nerves. In particular, voltage data is the most important data for power, which accompanies the entire power generation. At present, a large number of electric energy meters are arranged on a power distribution network and a user side, so that a power system can collect a large number of electric energy meter data by using the electric energy meters. At present, the abnormal condition monitoring of the electric energy meter mainly depends on equipment operation and maintenance personnel staff and related workers to detect the electric energy meter on site, the personnel cut off the power supply and close a power switch after arriving at the site, open the electric energy meter for maintenance and check the running state of the electric energy meter, all the operations need to be finished manually by the operators, the efficiency is low, and when the voltage is unstable or the fluctuation is large, the impact on load equipment is large, and the service life of the equipment is influenced.
Disclosure of Invention
The invention aims to overcome the technical problems in the prior art, and provides an electric energy meter capable of automatically powering off in case of abnormal power supply.
In order to achieve the purpose, the invention provides the following technical scheme: an electric energy meter capable of automatically cutting off power supply in abnormal power supply comprises a meter shell and a meter cover, wherein the meter cover is hinged with the open end of the meter shell; the inner cavity of the watch case is provided with a metering chip, an opening and closing mechanism and a fixed seat; the metering chip is arranged at the upper part of the inner cavity of the shell, the fixed seat is arranged at the lower part of the inner cavity of the shell, and the opening and closing mechanism is arranged at the middle part of the inner cavity of the shell; the bottom end surface of the watchcase is provided with a plurality of wire inlet holes penetrating into the inner cavity of the watchcase; the fixing seat is an insulating seat, a wire inserting groove corresponding to the plurality of wire inlet holes is formed in the side face of the fixing seat, a wiring terminal is arranged in the wire inserting groove, and a plurality of fastening screws extending into the corresponding wire inserting groove are in threaded fit with the upper end face of the fixing seat;
one end of the opening and closing mechanism is connected with one of the binding posts through a first lead, and the binding post corresponds to a live wire inlet wire; the other end of the opening and closing mechanism is connected with the other binding post through a second lead, and the binding post is corresponding to a live wire outlet; the opening and closing mechanism comprises two conductive columns which are correspondingly and electrically connected with the first conducting wire and the second conducting wire respectively, the opening and closing mechanism further comprises an electric cylinder and an insulating column, the insulating column is rotatably connected with one end of each connecting piece, the other end of each connecting piece is provided with a plug matched with one conductive column, and the two connecting pieces form a splayed structure; the telescopic end of the electric cylinder is provided with a ferrule which is sleeved on the outer sides of the two connecting pieces and is close to the insulating column, a spring which enables the two connecting pieces to keep a separated state is arranged between the two connecting pieces, and the spring is far away from the insulating column;
the inner chamber of watchcase still is equipped with the mutual-inductor, and the mutual-inductor cup joints on the second conductor, and the secondary side of mutual-inductor is connected with the monitoring module who is used for gathering mutual-inductor secondary side electric current or voltage, the watchcase still is equipped with MCU, and MCU is connected with monitoring module and accepts monitoring module's unusual power supply information, and MCU still is connected with electronic jar.
Preferably, a placing groove is arranged at one end of each wire inlet hole, which is far away from the inner cavity of the watch case, and a rubber ring which is coaxial with the wire inlet hole is arranged in the placing groove; the bottom end face of the watch case is further fixed with a pressing plate used for pressing the rubber ring through bolts, and through holes corresponding to the wire inlet holes one to one are formed in the plate face of the pressing plate.
Preferably, the inner diameter of the rubber ring is smaller than that of the wire inlet hole, and four rubber rings and four wire inlet holes are correspondingly arranged.
Preferably, the panel of the watch cover is provided with a transparent window corresponding to the metering chip, and the watch cover is also provided with a lock body for locking the watch case.
Preferably, the upper part of one side of the watchcase, which is far away from the watch cover, is provided with a hanging plate, and the hanging plate is provided with a hanging opening.
Preferably, the binding post comprises a semi-arc piece positioned in the wire inserting groove, and one end of the semi-arc piece is integrally formed into a cylinder.
Preferably, the plug is a circular truncated cone conductor, the cross section of the plug is isosceles trapezoid, and the end face of the conductive column is provided with a groove matched with the plug.
Preferably, the transformers are a voltage transformer and a current transformer.
Compared with the prior art, the invention has the beneficial effects that: according to the electric energy meter capable of automatically cutting off power supply in case of abnormal power supply, the mutual inductor is connected to a power supply live wire, the current and voltage values are detected through the monitoring module, the detection process is simple and easy to realize, power supply abnormality judgment is carried out, the detection module feeds abnormality information back to the MCU, the MCU controls the electric cylinder to execute corresponding actions, the electric cylinder pulls the ferrule and enables the two plugs to be correspondingly separated from the two conductive columns, so that automatic power cut-off is realized, and the use safety of electric load equipment is protected; in addition, the wire inserting groove of the fixed seat is positioned in the watchcase, the watchcase is required to be opened for wire connection during wire connection, and the function of preventing electricity stealing is also achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a first schematic diagram of the internal structure of the present invention;
FIG. 3 is a sectional view showing the internal structure of the present invention;
FIG. 4 is a partial schematic view of the present invention;
FIG. 5 is a schematic view of a terminal structure according to the present invention;
fig. 6 is a schematic structural view of the opening and closing mechanism of the present invention.
In the figure: 1 watchcase, 2 table covers, 2.1 transparent windows, 3 lock bodies, 4 link plates, 5 measurement chips, 6 mechanism that opens and shuts, 6.1 connecting piece, 6.2 lasso, 6.3 lead electrical pillar, 6.4 plugs, 6.5 electronic jar, 6.6 insulated column, 7 first wire, 8 terminal, 8.1 cylinder, 8.2 semi-arc piece, 9 fixing bases, 10 second wire, 11 fastening screw, 12 mutual-inductors, 13 monitoring module, 14 entrance holes, 15 rubber rings, 16 clamp plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: an electric energy meter capable of automatically cutting off power supply in case of abnormal power supply comprises a meter shell 1 and a meter cover 2, wherein the meter cover 2 is hinged with the open end of the meter shell 1; the inner cavity of the watchcase 1 is provided with a metering chip 5, an opening and closing mechanism 6 and a fixed seat 9; the metering chip 5 is arranged at the upper part of the inner cavity of the watchcase 1, the fixed seat 9 is arranged at the lower part of the inner cavity of the watchcase 1, and the opening and closing mechanism 6 is arranged at the middle part of the inner cavity of the watchcase 1; the bottom end surface of the watchcase 1 is provided with a plurality of wire inlet holes 14 penetrating into the inner cavity of the watchcase 1; the fixed seat 9 is an insulating seat, a plurality of wire inserting grooves corresponding to the wire inlet holes 14 are formed in the side face of the fixed seat 9, wiring posts 8 are arranged in the wire inserting grooves, a plurality of fastening screws 11 extending into the corresponding wire inserting grooves are in threaded fit with the upper end face of the fixed seat 9, wires are inserted into the wire inserting grooves of the fixed seat 9 through the wire inlet holes 14 and then are fixed through the fastening screws 11, the watch case 1 must be opened for wiring during wiring, and the function of preventing electricity theft is achieved;
as shown in fig. 6, one end of the opening and closing mechanism 6 is connected with one of the terminals 8 through the first lead 7, and the terminal 8 corresponds to a live wire incoming line; the other end of the opening and closing mechanism 6 is connected with another binding post 8 through a second lead 10, and the binding post 8 corresponds to a live wire outlet; the opening and closing mechanism 6 comprises two conductive columns 6.3 which are respectively and correspondingly and electrically connected with a first lead 7 and a second lead 10, the opening and closing mechanism 6 further comprises an electric cylinder 6.5 and an insulating column 6.6, the insulating column 6.6 is rotatably connected with one end of each connecting piece 6.1, the other end of each connecting piece 6.1 is provided with a plug 6.4 matched with one conductive column 6.3, and the two connecting pieces 6.1 form a splayed structure; a ferrule 6.2 is arranged at the telescopic end of the electric cylinder 6.5, the ferrule 6.2 is sleeved at the outer sides of the two connecting pieces 6.1 and is close to the insulating column 6.6, a spring for keeping the two connecting pieces 6.1 in a separated state is arranged between the two connecting pieces, and the spring is far away from the insulating column 6.6; when the electric cylinder 6.5 acts, the two connecting pieces under the action of the spring are pulled to be close to each other through the ferrule 6.2, so that the two plugs 6.4 are separated from the corresponding conductive posts 6.3, and the power-off operation is realized;
in addition, a mutual inductor 12 is further arranged in an inner cavity of the watch case 1, the mutual inductor 12 is a voltage mutual inductor and a current mutual inductor, the sensor 12 is sleeved on the second lead 10, a monitoring module 13 used for collecting current or voltage of the secondary side of the mutual inductor 12 is connected to the secondary side of the mutual inductor 12, the watch case 1 is further provided with an MCU, the MCU is connected with the monitoring module 13 and receives abnormal power supply information of the monitoring module 13, the MCU is further connected with the electric cylinder 6.5, the current and voltage values are detected through the monitoring module 13, the detection process is simple and easy to achieve, power supply abnormality judgment is carried out, the detection module 13 feeds the abnormal information back to the MCU, the MCU controls the electric cylinder 6.5 to execute corresponding actions, the control process is the prior art, and details are not repeated herein;
a placing groove is arranged at one end of each wire inlet 14, which is far away from the inner cavity of the watch case 1, and a rubber ring 15 which is coaxial with the wire inlet 14 is arranged in the placing groove; a pressing plate 16 used for pressing the rubber ring 15 is further fixed on the bottom end face of the watch case 1 through bolts, through holes corresponding to the plurality of wire inlet holes 14 in a one-to-one mode are formed in the plate face of the pressing plate 16, the pressing plate 16 is taken down during threading, then the rubber ring 15 is taken down, one end of a lead penetrates through the rubber ring 15 and then is placed in the placing groove, and the rubber ring 15 can play a dustproof and sealing role;
the inner diameter of the rubber ring 15 is smaller than that of the wire inlet hole 14, and four rubber rings 15 and four wire inlet holes 14 are correspondingly arranged;
in order to look up the number of the meters conveniently, the plate surface of the meter cover 2 is provided with a transparent window 2.1 corresponding to the metering chip 5, and the meter cover 2 is also provided with a lock body 3 for locking the meter shell 1 and used for locking the meter shell 1;
in order to conveniently install the watchcase 1, a hanging plate 4 is arranged at the upper part of one side of the watchcase 1, which is far away from the watch cover 2, and a hanging opening is formed in the hanging plate 4;
as shown in fig. 5, in order to facilitate the contact between the wire and the terminal 8, the terminal 8 includes a half-arc piece 8.2 located in the slot, and one end of the half-arc piece 8.2 is integrally formed with a column 8.1;
the plug 6.4 is a round table conductor, the cross section of the plug is isosceles trapezoid, and the end face of the conductive column 6.3 is provided with a groove matched with the plug 6.4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an electric energy meter of abnormal auto-power-off of power supply, includes watchcase (1) and table lid (2), its characterized in that: the watch cover (2) is hinged with the open end of the watch case (1); the inner cavity of the watch case (1) is provided with a metering chip (5), an opening and closing mechanism (6) and a fixed seat (9); the metering chip (5) is arranged at the upper part of the inner cavity of the watchcase (1), the fixed seat (9) is arranged at the lower part of the inner cavity of the watchcase (1), and the opening and closing mechanism (6) is arranged in the middle of the inner cavity of the watchcase (1); the bottom end surface of the watchcase (1) is provided with a plurality of wire inlet holes (14) penetrating into the inner cavity of the watchcase (1); the fixing seat (9) is an insulating seat, a wire inserting groove corresponding to the wire inlet holes (14) is formed in the side face of the fixing seat (9), a binding post (8) is arranged in the wire inserting groove, and a plurality of fastening screws (11) extending into the corresponding wire inserting groove are in threaded fit with the upper end face of the fixing seat (9);
one end of the opening and closing mechanism (6) is connected with one binding post (8) through a first lead (7), and the binding post (8) corresponds to a live wire inlet wire; the other end of the opening and closing mechanism (6) is connected with the other binding post (8) through a second lead (10), and the binding post (8) is corresponding to a live wire outlet; the opening and closing mechanism (6) comprises two conductive columns (6.3) which are correspondingly and electrically connected with the first conducting wire (7) and the second conducting wire (10) respectively, the opening and closing mechanism (6) further comprises an electric cylinder (6.5) and an insulating column (6.6), the insulating column (6.6) is rotatably connected with one end of each of the two connecting pieces (6.1), the other end of each connecting piece (6.1) is provided with a plug (6.4) matched with one conductive column (6.3), and the two connecting pieces (6.1) form a splayed structure; a ferrule (6.2) is arranged at the telescopic end of the electric cylinder (6.5), the ferrule (6.2) is sleeved on the outer sides of the two connecting pieces (6.1) and is close to the insulating column (6.6), a spring for keeping the two connecting pieces (6.1) in a separated state is arranged between the two connecting pieces, and the spring is far away from the insulating column (6.6);
the inner chamber of watchcase (1) still is equipped with mutual-inductor (12), and mutual-inductor (12) cup joint on second wire (10), and the secondary side of mutual-inductor (12) is connected with monitoring module (13) that are used for gathering mutual-inductor (12) secondary side electric current or voltage, watchcase (1) still is equipped with MCU, and MCU is connected with monitoring module (13) and receives monitoring module's (13) unusual power supply information, and MCU still is connected with electronic jar (6.5).
2. The electric energy meter capable of automatically cutting off power supply in case of abnormal power supply according to claim 1, characterized in that: a placing groove is arranged at one end of each wire inlet hole (14) far away from the inner cavity of the watch case (1), and a rubber ring (15) coaxial with the wire inlet hole (14) is arranged in the placing groove; the bottom end face of the watch case (1) is further fixed with a pressing plate (16) used for pressing the rubber ring (15) through bolts, and through holes corresponding to the wire inlet holes (14) one to one are formed in the plate face of the pressing plate (16).
3. The electric energy meter capable of automatically cutting off power supply in case of abnormal power supply according to claim 2, characterized in that: the inner diameter of the rubber ring (15) is smaller than that of the wire inlet hole (14), and four rubber rings (15) and four wire inlet holes (14) are correspondingly arranged.
4. The electric energy meter capable of automatically cutting off power supply abnormity according to the claim 1, characterized in that: the face of the meter cover (2) is provided with a transparent window (2.1) corresponding to the metering chip (5), and the meter cover (2) is also provided with a lock body (3) for locking the meter shell (1).
5. The electric energy meter capable of automatically cutting off power supply abnormity according to the claim 1, characterized in that: the watch is characterized in that a hanging plate (4) is arranged on the upper portion of one side, far away from the watch cover (2), of the watch case (1), and a hanging opening is formed in the hanging plate (4).
6. The electric energy meter capable of automatically cutting off power supply abnormity according to the claim 1, characterized in that: the binding post (8) comprises a semi-arc sheet (8.2) positioned in the wire inserting groove and an integrally formed cylinder (8.1) at one end of the semi-arc sheet (8.2).
7. The electric energy meter capable of automatically cutting off power supply abnormity according to the claim 1, characterized in that: the plug (6.4) is a circular truncated cone conductor, the cross section of the circular truncated cone conductor is an isosceles trapezoid, and a groove matched with the plug (6.4) is formed in the end face of the conductive column (6.3).
8. The electric energy meter capable of automatically cutting off power supply abnormity according to the claim 1, characterized in that: the transformers (12) are voltage transformers and current transformers.
Priority Applications (1)
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CN202110331215.1A CN112904065B (en) | 2021-03-29 | 2021-03-29 | Electric energy meter capable of automatically cutting off power supply in case of abnormal power supply |
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CN202110331215.1A CN112904065B (en) | 2021-03-29 | 2021-03-29 | Electric energy meter capable of automatically cutting off power supply in case of abnormal power supply |
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CN112904065B true CN112904065B (en) | 2022-06-24 |
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CN115774149B (en) * | 2023-02-10 | 2023-05-23 | 河北悦贝电力工程有限公司 | Intelligent electric power anti-theft device based on data comparison |
CN115902558B (en) * | 2023-02-15 | 2023-05-12 | 江苏盛德电子仪表有限公司 | Withstand voltage testing device of electric energy meter |
Citations (5)
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US4434415A (en) * | 1982-11-05 | 1984-02-28 | S&C Electric Company | Electrical control module for a current-limiting fuse |
CN104201751A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Charge controller for direct-inserting type universal meter |
CN208142877U (en) * | 2018-04-27 | 2018-11-23 | 唐宓 | A kind of auto-power-off device and the power-off system including the auto-power-off device |
CN112114272A (en) * | 2020-08-17 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Leakage current detection system and leakage current detection method for electric energy meter |
CN112332176A (en) * | 2020-10-27 | 2021-02-05 | 顾俊歌 | Mobile phone charging plug capable of automatically cutting off power supply |
-
2021
- 2021-03-29 CN CN202110331215.1A patent/CN112904065B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4434415A (en) * | 1982-11-05 | 1984-02-28 | S&C Electric Company | Electrical control module for a current-limiting fuse |
CN104201751A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Charge controller for direct-inserting type universal meter |
CN208142877U (en) * | 2018-04-27 | 2018-11-23 | 唐宓 | A kind of auto-power-off device and the power-off system including the auto-power-off device |
CN112114272A (en) * | 2020-08-17 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Leakage current detection system and leakage current detection method for electric energy meter |
CN112332176A (en) * | 2020-10-27 | 2021-02-05 | 顾俊歌 | Mobile phone charging plug capable of automatically cutting off power supply |
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