CN115207852A - Electric energy metering junction box - Google Patents
Electric energy metering junction box Download PDFInfo
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- CN115207852A CN115207852A CN202210619579.4A CN202210619579A CN115207852A CN 115207852 A CN115207852 A CN 115207852A CN 202210619579 A CN202210619579 A CN 202210619579A CN 115207852 A CN115207852 A CN 115207852A
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- 238000005192 partition Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000013642 negative control Substances 0.000 description 41
- 238000010586 diagram Methods 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
The utility model relates to an electric energy measurement terminal box, including a plurality of connection pieces, voltage wiring module, first current wiring module and second current wiring module, voltage wiring module includes voltage connecting block and voltage output terminal, voltage connecting block is with the help of connection piece and voltage output terminal electric connection, first current wiring module includes first current connecting block and first current output terminal, first current connecting block is with the help of connection piece and first current output terminal electric connection, second current wiring module includes second current connecting block and second current output terminal, second current connecting block is with the help of connection piece and second current output terminal electric connection, and wherein a second current output terminal is with the help of connection piece and a first current output terminal electric connection. The electric energy metering junction box is provided with the connecting sheet so that a voltage loop connected into the electric energy metering junction box is connected or disconnected, and a current loop connected into the electric energy metering junction box is connected or disconnected, so that electric energy metering is more accurate.
Description
Technical Field
The application relates to the technical field of electric power metering, in particular to an electric energy metering junction box.
Background
At present, in order to measure electric energy, a junction box is generally adopted, so that voltage of a secondary loop of a voltage transformer and current of a secondary loop of a current transformer are respectively connected into an electric energy meter and a negative control terminal through the junction box, and therefore the voltage loops of the junction box, the electric energy meter and the negative control terminal are connected in parallel, and the current loops are connected in series. Because the electric energy meter or the negative control terminal needs to be maintained and replaced, a connecting sheet is arranged in the junction box, and a secondary voltage loop is opened and a secondary current loop is short-circuited by adjusting the position of the connecting sheet, so that the electric energy meter or the negative control terminal can be replaced under load.
However, since the secondary voltage loop is open and the secondary current loop is short during replacement, the junction box in the related art cannot normally measure the electric energy when the electric energy meter or the negative control terminal is replaced, and the measurement cannot be continued until the power is turned on after the replacement is completed, so that the electric energy measurement is inaccurate.
Disclosure of Invention
Therefore, it is necessary to provide an electric energy metering junction box for more accurate electric energy metering, aiming at the problem that the electric energy metering is inaccurate when the junction box is replaced by an electric energy meter or a negative control terminal in the related art.
According to an aspect of the present application, there is provided an electric energy metering junction box including:
a plurality of connecting pieces;
the voltage connection module comprises a voltage connection block and at least two voltage output terminals which are insulated from each other, and the voltage connection block is electrically connected with the at least two voltage output terminals by virtue of the connection sheet;
the first current wiring module comprises a first current connecting block and at least two first current output terminals which are insulated from each other, and the first current connecting block is electrically connected with the at least two first current output terminals by virtue of the connecting sheet; and
the second current wiring module comprises a second current connecting block and at least two second current output terminals which are insulated from each other, the second current connecting block is electrically connected with the at least two second current output terminals by means of the connecting sheet, and one of the second current output terminals is electrically connected with the first current output terminal by means of the connecting sheet.
The electric energy metering junction box is provided with the connecting sheet, so that the voltage connecting block and the voltage output terminal are electrically connected or mutually insulated by changing the position of the connecting sheet, and a voltage loop connected with the voltage connecting block and the voltage output terminal can be connected or disconnected. The first current connecting block is electrically connected with the first current output terminal by means of the connecting sheet, the second current connecting block is electrically connected with the second current output terminal by means of the connecting sheet, and the current output terminal is electrically connected with the first current output terminal by means of the connecting sheet, so that the first current connecting block, the first current output terminal, the second current connecting block and the second current output terminal can be connected in series in a current loop, and the first current output terminal or the second current output terminal can be disconnected from the current loop by changing the position of the connecting sheet. Therefore, the electric energy metering is more accurate.
In one embodiment, the voltage connection block comprises a voltage input terminal and a voltage intermediate terminal corresponding to the voltage output terminal one by one, the voltage input terminal is electrically connected with the voltage intermediate terminal, and the voltage intermediate terminal is electrically connected with the corresponding voltage output terminal by means of the connecting sheet;
the first current connecting block comprises a first current input terminal and first current intermediate terminals in one-to-one correspondence with the first current output terminals, the first current input terminal is electrically connected with the first current intermediate terminals, and the first current intermediate terminals are electrically connected with the corresponding first current output terminals by means of the connecting sheets;
the second current connecting block comprises a second current input terminal and a second current intermediate terminal in one-to-one correspondence with the second current output terminal, the second current input terminal is electrically connected with the second current intermediate terminal, and the second current intermediate terminal is electrically connected with the corresponding second current output terminal by means of the connecting sheet.
In one embodiment, the first current wiring module comprises a first terminal electrically connected to a first current output terminal, and the second current wiring module comprises a second terminal electrically connected to a second current output terminal;
the second terminal is electrically connected with the first terminal by means of the connecting sheet.
In one embodiment, each connecting piece is provided with a slot, and the voltage intermediate terminal, the first current intermediate terminal, the second current intermediate terminal and the second terminal are respectively arranged in one slot;
the connecting piece has a stroke sliding along the longitudinal extension direction of the slotted hole, so that one end of the connecting piece along the longitudinal extension direction of the slotted hole is connected with or separated from the voltage output terminal, the first current output terminal, the second current output terminal or the first terminal.
In one embodiment, a shifting sheet is arranged at the other end of the connecting sheet along the lengthwise extending direction of the slotted hole;
the shifting piece protrudes out of one side of the connecting piece.
In one embodiment, the electric energy metering junction box further comprises a box body and a cover body detachably connected with the box body, the voltage wiring module, the first current wiring module and the second current wiring module are respectively arranged in the box body, and the poking sheet protrudes out of one side of the connecting sheet close to the cover body;
one side of the cover body close to the box body is provided with limiting parts in one-to-one correspondence with the shifting pieces, and the limiting parts are arranged at intervals along the longitudinal extension direction of the slotted hole and the corresponding shifting pieces so as to limit the shifting pieces.
In one embodiment, the electric energy metering junction box further comprises a plurality of first cushion blocks and a plurality of second cushion blocks;
the first cushion block is arranged below the voltage intermediate terminal, the first current intermediate terminal and the second current intermediate terminal respectively, and one ends of the voltage intermediate terminal, the first current intermediate terminal and the second current intermediate terminal, which are far away from the first cushion block, penetrate through the slotted holes;
the voltage output terminal, the first current output terminal and the second current output terminal are respectively provided with one second cushion block, and one end of the voltage output terminal, one end of the first current output terminal and one end of the second current output terminal, which are far away from the second cushion blocks, are connected with one end of the connecting sheet, which is far away from the slotted holes.
In one embodiment, the electric energy metering junction box further comprises an insulating diaphragm;
the first cushion block, the second cushion block and one end of the voltage input terminal close to the connecting sheet, one end of the first current input terminal close to the connecting sheet and one end of the second current input terminal close to the connecting sheet are respectively arranged on the insulating transverse partition plate in a penetrating mode.
In one embodiment, the number of the voltage wiring modules, the number of the first current wiring modules and the number of the second current wiring modules are all multiple, and one first current wiring module and one second current wiring module are arranged between two adjacent voltage wiring modules.
In one embodiment, the electric energy metering junction box further comprises a plurality of insulating vertical partition plates;
and the insulating vertical partition plates are arranged among the adjacent voltage wiring modules, the adjacent first current wiring modules and the adjacent second current wiring modules.
Drawings
FIG. 1 is a top view of an electrical energy metering junction box according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional top view of the electric energy metering junction box of the embodiment of FIG. 1;
FIG. 3 is a wiring diagram illustrating the normal operation of the electrical energy metering junction box according to an embodiment of the present application;
FIG. 4 is a wiring diagram of an electrical energy meter with a load change electrical energy meter mounted on an electrical energy metering terminal cassette in accordance with an embodiment of the present application;
FIG. 5 is a wiring diagram of a load change negative control terminal of an electric energy metering terminal cassette in one embodiment of the present application;
FIG. 6 is a wiring diagram of the electric energy metering junction box with a load while replacing the electric energy meter and the negative control terminal in an embodiment of the present application;
FIG. 7 is a cross-sectional view of the electrical energy metering junction box of the embodiment of FIG. 1;
fig. 8 is an isometric view of an electrical energy metering junction box in an embodiment of the present application.
Description of reference numerals:
10. connecting sheets; 12. a slot; 20. a voltage wiring module; 21. a voltage connecting block; 212. a voltage input terminal; 214. a voltage intermediate terminal; 216. a voltage connection block body; 23. a voltage output terminal; 23a, a first terminal; 23b, terminal II; 24. a second cushion block; 25. a voltage terminal block; 30. a first current wiring module; 31. a first current connection block; 312. a first current input terminal; 314. a first current intermediate terminal; 316. a first current connection block body; 33. a first current output terminal; 33a, third terminal; 33b, terminal number four; 34. a first terminal; 35. a first current terminal block; 40. a second current junction module; 41. a second current connection block; 412. a second current input terminal; 414. a second current intermediate terminal; 416. a second current connection block body; 43. a second current output terminal; 43a, terminal number five; 43b, terminal number six; 44. a second terminal; 45. a second current terminal block; 50. a shifting sheet; 60. a box body; 70. a cover body; 80. a limiting member; 82. a first limit plate; 84. a second limiting plate; 90. a first cushion block; 100. a second cushion block; 200. a first insulating plate; 300. a second insulating plate; 300. an insulating diaphragm plate; 400. insulating vertical partition board.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
FIG. 1 is a top view of an electrical energy metering junction box according to an embodiment of the present disclosure; fig. 2 is a cut-away top view of the electric energy metering junction box of the embodiment of fig. 1.
Referring to fig. 1-2, an electric energy metering junction box provided in an embodiment of the present application includes a plurality of connection pads 10, a voltage junction module 20, a first current junction module 30, and a second current junction module 40.
The voltage connection module 20 comprises a voltage connection block 21 and at least two voltage output terminals 23, which are insulated from each other, the voltage connection block 21 being electrically connected to the at least two voltage output terminals 23 by means of the connection piece 10. The first current connection module 30 includes a first current connection block 31 and at least two first current output terminals 33 insulated from each other, and the first current connection block 31 is electrically connected to the at least two first current output terminals 33 by means of the connection piece 10, respectively. The second current connection module 40 includes a second current connection block 41 and at least two second current output terminals 43 insulated from each other, the second current connection block 41 is electrically connected to the at least two second current output terminals 43 by means of the connection piece 10, respectively, and one of the second current output terminals 43 is electrically connected to one of the first current output terminals 33 by means of the connection piece 10.
In the electric energy metering junction box, the connecting sheet 10 is arranged, so that the voltage connecting block 21 and the voltage output terminal 23 are electrically connected or mutually insulated by changing the position of the connecting sheet 10, and a voltage loop connected between the voltage connecting block 21 and the voltage output terminal 23 can be connected or disconnected. The first current connecting block 31 is electrically connected with the first current output terminal 33 by the connecting sheet 10, the second current connecting block 41 is electrically connected with the second current output terminal 43 by the connecting sheet 10, and a current output terminal is electrically connected with the first current output terminal 33 by the connecting sheet 10, so that the first current connecting block 31, the first current output terminal 33, the second current connecting block 41 and the second current output terminal 43 can be connected in series in a current loop, and the first current output terminal 33 or the second current output terminal 43 can be disconnected from the current loop by changing the position of the connecting sheet 10. Therefore, the electric energy metering is more accurate.
Fig. 3 is a wiring diagram illustrating the normal operation of the electric energy metering junction box according to an embodiment of the present invention.
For example, in practical use, as shown in fig. 3, the electric energy metering junction box is used for being connected with an electric energy meter, a negative control terminal, a current transformer and a voltage transformer respectively. It should be noted that the electric energy meter has a plurality of electric energy terminals, wherein a first electric energy terminal for inputting current and a third electric energy terminal for outputting current are connected in series, and a second electric energy terminal is used for connecting voltage. The negative control terminal is provided with a plurality of negative control terminals, wherein the first negative control terminal used for inputting current is connected with the third negative control terminal used for outputting current in series, and the second negative control terminal is used for connecting voltage. In the wiring manner of the electric energy metering junction box in the above embodiment, the voltage connection block 21 is used for connecting a voltage loop generated in the voltage transformer, the two voltage output terminals 23 are respectively electrically connected with the first terminal 23a and the second terminal 23b, the first terminal 23a is used for electrically connecting with the second electric energy terminal, and the second terminal 23b is used for electrically connecting with the second negative control terminal. The first current connecting block 31 and the second current connecting block 41 are respectively used for connecting a current loop generated by a current transformer, the two first current output terminals 33 are respectively electrically connected with the third terminal 33a and the fourth terminal 33b, the two second current output terminals 43 are respectively electrically connected with the fifth terminal 43a and the sixth terminal 43b, the third terminal 33a is electrically connected with the first electric energy terminal, the fourth terminal 33b is connected with the first negative control terminal, the fifth terminal 43a is electrically connected with the third electric energy terminal, and the sixth terminal 43b is electrically connected with the third negative control terminal.
In the normal operation process, as shown in fig. 3, the loop voltage generated by the voltage transformer is input from the voltage connection block 21, the voltage connection block 21 is electrically connected with the first terminal 23a by means of the connection sheet 10, and is electrically connected with the second terminal 23b by means of the connection sheet 10, so that the loop voltage generated by the voltage transformer is input from the first terminal 23a to the second electric energy terminal, and then the voltage is input into the electric energy meter, and meanwhile, the loop voltage generated by the voltage transformer is input from the second terminal 23b to the second negative control terminal, and then the voltage is input into the negative control terminal. Therefore, the electric energy meter, the negative control terminal and the voltage loop of the voltage transformer are connected in parallel. The loop current generated by the current transformer is input from the first current connection block 31, the first current connection block 31 is electrically connected with the third terminal 33a by the connecting sheet 10, and the second current connection block 41 is electrically connected with the sixth terminal 43b by the connecting block, so that the current is input into the first electric energy terminal from the third terminal 33a, and then is input into the electric energy meter. Then, the current is transmitted from the third power terminal to the fifth terminal 43a, since the fifth terminal 43a is electrically connected with the fourth terminal 33b by the connecting sheet 10, the current is input from the fourth terminal 33b to the first negative control terminal and then to the negative control terminal, and then the current is transmitted from the third negative control terminal to the sixth terminal 43b and then to the second current connecting block 41 through the connecting sheet 10 and then returned to the current transformer. Therefore, a series current loop of the electric energy meter, the negative control terminal and the current transformer is formed.
Fig. 4 is a wiring diagram of a load-replacing electric energy meter for an electric energy metering wiring cassette in an embodiment of the present application.
When the electric energy meter is replaced under load, the position of the connecting sheet 10 is changed to disconnect the first terminal 23a from the voltage connecting block 21, so that the electric energy meter is disconnected from the voltage, and the second terminal 23b is connected with the voltage connecting block 21, so that the negative control terminal is connected with the voltage. In addition, the position of the connecting sheet 10 is changed, so that the third terminal 33a is disconnected from the first current connecting block 31, the fifth terminal 43a is disconnected from the fourth terminal 33b, and the fifth terminal 43a is disconnected from the second current connecting block 41, so that the electric energy meter is disconnected from the current loop. Meanwhile, the position of the connecting block is changed, so that the fourth terminal 33b is connected with the first current connecting block 31 from disconnection, and the sixth terminal 43b is connected with the first current connecting block 31, so that the current is input into the first negative control terminal from the fourth terminal 33b and then input into the negative control terminal, is output to the sixth terminal 43b through the third negative control terminal, and returns to the current transformer through the second current connecting block 41, so that the negative control terminal is connected with the current loop. So, realized that the negative control terminal keeps being connected with voltage transformer and current transformer respectively, disconnected electric energy meter and voltage transformer and current transformer's connection simultaneously, consequently, during the on-load change electric energy meter, the negative control terminal can normally measure the electric energy.
Fig. 5 is a wiring diagram of a load change negative control terminal of an electric energy metering wiring cassette in an embodiment of the present application.
When the load control terminal is replaced with a load, the position of the connecting sheet 10 is changed to disconnect the second terminal 23b from the voltage connecting block 21, namely, to disconnect the load control terminal from the voltage, as shown in fig. 3 and 5, the first terminal 23a is connected with the voltage connecting block 21, so that the electric energy meter is connected with the voltage. In addition, the position of the connecting piece 10 is changed, the terminal No. five 43a is disconnected from the terminal No. four 33b, the terminal No. six 43b is disconnected from the second current connecting block 41, and the current connection of the negative control terminal is disconnected. Meanwhile, the position of the connecting sheet 10 is changed, so that the fifth terminal 43a and the second current connecting block 41 are changed from disconnection to connection, the current of the electric energy meter is transmitted to the fifth terminal 43a through the third electric energy terminal, and then returns to the current transformer through the second current connecting block 41. So, realized that electric energy transformer keeps being connected with current transformer and voltage transformer respectively, disconnection load control terminal is connected with current transformer and voltage transformer simultaneously, so, when the load control terminal is changed in the load, the electric energy meter can normally measure the electric energy.
Fig. 6 is a wiring diagram of the electric energy metering wiring cassette loading while replacing the electric energy meter and the negative control terminal in an embodiment of the present application.
When the electric energy meter and the negative control terminal are replaced or the electric energy metering junction box is replaced at the same time, the position of the connecting sheet 10 is changed by combining with the position shown in fig. 3 and fig. 6, so that the first terminal 23a and the second terminal 23b are disconnected with the voltage connecting block 21, namely, the connection between the electric energy meter and the negative control terminal and the voltage is disconnected. In addition, the position of the connecting sheet 10 is changed, the third terminal 33a is disconnected from the first current connecting block 31, the fourth terminal 33b is connected with the first current connecting block 31, the fifth terminal 43a is connected with the second current connecting block 41, the sixth terminal 43b is disconnected from the second current connecting block 41, and the fifth terminal 43a is connected with the fourth terminal 33b through the connecting sheet 10, so that the current loop of the electric energy meter and the negative control terminal is short-circuited, the current is not input to the electric energy meter and the negative control terminal, and at the moment, the voltage loop and the current loop do not have loads, and the electric energy meter and the negative control terminal or the electric energy metering connecting block can be replaced at the same time.
In some embodiments, as shown in fig. 1 and 2, the voltage connection block 21 includes a voltage input terminal 212 and a voltage intermediate terminal 214 corresponding to the voltage output terminals 23, the voltage input terminal 212 is electrically connected to the voltage intermediate terminal 214, and the voltage intermediate terminal 214 is electrically connected to the corresponding voltage output terminal 23 by means of the connection piece 10. The first current connection block 31 includes a first current input terminal 312 and a first current intermediate terminal 314 corresponding to the first current output terminal 33 one by one, the first current input terminal 312 is electrically connected to the first current intermediate terminal 314, and the first current intermediate terminal 314 is electrically connected to the corresponding first current output terminal 33 by means of the connection piece 10. The second current connection block 41 includes a second current input terminal 412 and a second current intermediate terminal 414 corresponding to the second current output terminal 43 one by one, the second current input terminal 412 is electrically connected to the second current intermediate terminal 414, and the second current intermediate terminal 414 is electrically connected to the corresponding second current output terminal 43 by means of the connection piece 10. In this way, by providing the voltage input terminal 212 so that the voltage connection block 21 is connected to the voltage circuit of the voltage transformer, by providing the voltage intermediate terminal 214 so that the voltage output terminal 23 is connected to the voltage connection block 21 by means of the connection piece 10. The first current input terminal 312 and the second current input terminal 412 are arranged so that the first current connection block 31 and the second current connection block 41 are respectively connected with a current loop of the current transformer, the first current output terminal 33 is connected with the first current connection block 31 by arranging the first current intermediate terminal 314, and the second current output terminal 43 is connected with the second current connection block 41 by arranging the second current intermediate terminal 414.
In order to electrically connect a second current output terminal 43 to a first current output terminal 33 by means of the connecting piece 10, in some embodiments, as shown in fig. 1, the first current wiring module 30 includes a first terminal 34 electrically connected to a first current output terminal 33, the second current wiring module 40 includes a second terminal 44 electrically connected to a second current output terminal 43, and the second terminal 44 is electrically connected to the first terminal 34 by means of the connecting piece 10. Thus, by providing the first terminal 34 and the second terminal 44, when the second terminal 44 is electrically connected to the first terminal 34 by means of the connecting sheet 10, the electrical connection between a second current output terminal 43 and a first current output terminal 33 is realized, and the second current output terminal 43 and the first current output terminal 33 only need to be connected to the connecting sheet 10, so as to avoid the occurrence of accidents such as short circuit caused by connection errors.
Specifically, as shown in fig. 1 and 3, the first terminal 34 is electrically connected to the fourth terminal 33b, and the second terminal 44 is electrically connected to the fifth terminal 43a, so that when the second terminal 44 is electrically connected to the first terminal 34 by the connecting sheet 10, the fifth terminal 43a is electrically connected to the fourth terminal 33b.
In some embodiments, as shown in fig. 1, each connecting piece 10 is provided with a slot 12, and the voltage intermediate terminal 214, the first current intermediate terminal 314, the second current intermediate terminal 414 and the second terminal 44 are respectively inserted into the slot 12 of the connecting piece 10. The connecting pieces 10 have a stroke sliding along the longitudinal extension direction of the slot 12, so that one end of each connecting piece 10 along the longitudinal extension direction of the slot 12 is connected with or separated from the corresponding voltage output terminal 23, first current output terminal 33, second current output terminal 43 or first terminal 34. Thus, by providing the slot 12, the connecting piece 10 can be moved, and when the position of the connecting piece 10 needs to be changed, the connecting piece 10 is moved to slide along the longitudinal extending direction of the slot 12, so that one end of the connecting piece 10 can be connected with or separated from the voltage output terminal 23, the first current output terminal 33, the second current output terminal 43 or the first terminal 34, thereby facilitating the operation.
Fig. 7 is a cross-sectional view of the electric energy metering junction box of the embodiment shown in fig. 1.
Further, as shown in fig. 7, the connecting piece 10 is provided with a shifting piece 50 at the other end along the longitudinal extending direction of the slot 12, and the shifting piece 50 protrudes out of one side of the connecting piece 10. In this way, by providing the pick 50 so as to move the connecting piece 10 by manipulating the pick 50, for example, during actual use, the pick 50 can be adjusted by a human hand to change the position of the connecting piece 10.
In one embodiment, as shown in fig. 7, the plane of the paddle 50 is perpendicular to the lengthwise extension of the slot 12 to further facilitate manipulation of the paddle 50.
Fig. 8 is an isometric view of an electrical energy metering junction box in an embodiment of the present application.
In order to improve the safety of the electric energy metering junction box, in some embodiments, as shown in fig. 8, the electric energy metering junction box further includes a box body 60 and a cover body 70 detachably connected to the box body 60, the voltage wiring module 20, the first current wiring module 30 and the second current wiring module 40 are respectively disposed in the box body 60, and the dial 50 protrudes from the side of the connecting piece 10 close to the cover body 70. One side of the cover 70 close to the box 60 is provided with a limiting member 80 corresponding to the shifting piece 50, and the limiting member 80 is spaced from the corresponding shifting piece 50 along the longitudinal extension direction of the slot 12 to limit the shifting piece 50. As such, by providing the case 60 and the cover 70 to receive and protect the voltage wiring module 20, the first current wiring module 30, and the second current wiring module 40, the cover 70 is detachably coupled to the case 60 to enable the cover 70 to be detached and the position of the dial 50 to be adjusted. By arranging the limiting member 80 on the cover body 70, when the cover body 70 is covered on the box body 60, the limiting member 80 limits the position of the shifting piece 50, so that the connecting piece 10 is located at the preset position, if the position of the connecting piece 10 is deviated, the limiting member 80 interferes with the connecting piece 10, the cover body 70 cannot cover the box body 60, and the safety of the electric energy metering junction box is improved. It should be noted that the preset position refers to a position of the connecting sheet 10 when both the electric energy meter and the negative control terminal are in normal operation, as shown in fig. 5.
Alternatively, as shown in fig. 7-8, the plane of the pick 50 is perpendicular to the longitudinal extension direction of the slot 12, the limiting member 80 includes a first limiting plate 82 and a second limiting plate 84, the plane of the first limiting plate 82 is perpendicular to the longitudinal extension direction of the slot 12, the plane of the second limiting plate 84 is parallel to the longitudinal extension direction of the slot 12, and the second limiting plate 84 is connected to a side of the first limiting plate 82 away from the pick 50. Thus, the first limiting plate 82 and the second limiting plate 84 are arranged, so that when the cover 70 covers the box body 60, the shifting piece 50 cannot be located in the space where the first limiting plate 82 and the second limiting plate 84 are located, but only can be opposite to one side, away from the second limiting plate 84, of the first limiting plate 82, and therefore potential safety hazards caused by position deviation of the shifting piece 50 and the connecting piece 10 are prevented.
In some embodiments, as shown in fig. 7, the energy metering junction box further comprises a plurality of first pods 90 and a plurality of second pods 100. A first pad 90 is disposed under the voltage intermediate terminal 214, the first current intermediate terminal 314 and the second current intermediate terminal 414, and ends of the voltage intermediate terminal 214, the first current intermediate terminal 314 and the second current intermediate terminal 414 far away from the first pad 90 are disposed in the slot 12. A second pad 100 is respectively arranged under the voltage output terminal 23, the first current output terminal 33 and the second current output terminal 43, and one end of the voltage output terminal 23, the first current output terminal 33 and the second current output terminal 43 far away from the second pad 100 is connected with one end of the connecting sheet 10 far away from the slot 12. In this way, by providing the first spacer 90 and the second spacer 100, the end of the connection piece 10 to which the voltage intermediate terminal 214, the first current intermediate terminal 314, the second current intermediate terminal 414, the voltage intermediate terminal 214, the first current intermediate terminal 314 and the second current intermediate terminal 414 are connected protrudes out of the plane where the voltage input terminal 212, the first current input terminal 312 and the second current input terminal 412 are located near the end of the connection piece 10, so that the connection piece 10 does not interfere with the voltage input terminal 212, the first current input terminal 312 and the second current input terminal 412 during the sliding stroke of the connection piece 10, and the operation and adjustment of the position of the connection piece 10 are facilitated.
Alternatively, as shown in fig. 2, the voltage connection block 21 includes a voltage connection block body 216, at least two first pads 90 spaced apart from each other and partially embedded in one side of the voltage connection block body 216 near the plurality of voltage output terminals 23, respectively, and the voltage input terminal 212 partially embedded in the other side of the voltage connection block body 216. The first current connection block 31 includes a first current connection block body 316, at least two first pads 90 spaced apart from each other and partially embedded in one side of the first current connection block body 316 near the plurality of first current output terminals 33, respectively, and a first current input terminal 312 partially embedded in the other side of the first current connection block body 316. The second current connection block 41 includes a second current connection block body 416, at least two first pads 90 are partially embedded in the second current connection block body 416 at a distance from each other at one side close to the plurality of second current output terminals 43, and the second current input terminal 412 is partially embedded in the second current connection block body 416 at the other side.
In some embodiments, as shown in fig. 1-2 and 7, the voltage wiring module 20 further includes a voltage terminal block 25 corresponding to the voltage output terminal 23, the second spacer block 100 is embedded in one end of the corresponding voltage terminal block 25 close to the voltage connection block 21, and the other end of the voltage terminal block 25 is provided with a first terminal 23a or a second terminal 23b. The first current wiring module 30 further includes first current terminal blocks 35 corresponding to the first current output terminals 33 one to one, the second spacer block 100 is embedded in one end of the corresponding first current terminal block 35 close to the first current connection block 31, and the other end of the first current terminal block 35 is provided with a third terminal 33a or a fourth terminal 33b. The second current wiring module 40 further includes second current terminal blocks 45 corresponding to the second current output terminals 43 one to one, the second spacer block 100 is embedded in one end of the corresponding second current terminal block 45 close to the second current connection block 41, and the other end of the second current terminal block 45 is provided with a fifth terminal 43a or a sixth terminal 43b. Thus, the voltage output terminal 23, the first current output terminal 33 and the second current output terminal 43 are electrically connected to the electric energy meter or the negative control terminal, and the voltage connection block 21, the first current connection block 31 or the second current connection block 41, respectively.
Optionally, as shown in fig. 7, the electric energy metering junction box further includes a first insulating plate 200, and the first insulating plates 200 are respectively provided between the voltage connection block 21 and the plurality of voltage terminal blocks 25, between the first current connection block 31 and the plurality of first current terminal blocks 35, and between the second current connection block 41 and the plurality of second current terminal blocks 45, to avoid line faults and improve operation safety.
Further, as shown in fig. 1, the electric energy metering junction box further includes a plurality of second insulating plates 300, and one second insulating plate 300 is respectively disposed between two adjacent voltage terminal blocks 25, between two adjacent first current terminal blocks 35, and between two adjacent second current terminal blocks 45, so as to avoid a line fault and improve operation safety.
In some embodiments, as shown in fig. 7, the electric energy metering junction box further includes an insulating diaphragm 300, and the first spacer 90, the second spacer 100, the end of the voltage input terminal 212 close to the connecting piece 10, the end of the first current input terminal 312 close to the connecting piece 10, and the end of the second current input terminal 412 close to the connecting piece 10 are respectively disposed through the insulating diaphragm 300. In this way, the insulating diaphragm 300 is provided, thereby improving the operational safety when adjusting the connecting piece 10.
In one embodiment, as shown in fig. 7, the voltage connection block 21, the voltage terminal block 25, the first current connection block 31, the first current terminal block 35, the second current connection block 41 and the second current terminal block 45 are respectively connected to a side of the insulating diaphragms 300 away from the connection pieces 10.
In some embodiments, as shown in fig. 1, the number of the voltage connection modules 20, the number of the first current connection modules 30, and the number of the second current connection modules 40 are all plural, and a first current connection module 30 and a second current connection module 40 are disposed between two adjacent voltage connection modules 20. In this way, the voltage wiring module 20, the first current wiring module 30 and the second current wiring module 40 are all provided in a plurality of numbers so as to be suitable for a multi-phase alternating current system, wherein the wiring mode of each phase is the same.
Optionally, as shown in fig. 1, the electric energy metering junction box further includes a plurality of insulating vertical partition plates 400, and the insulating vertical partition plates 400 are disposed between the adjacent voltage wiring modules 20, the first current wiring module 30, and the second current wiring module 40. Therefore, line faults are avoided, when the position of one connecting sheet 10 is adjusted in operation, other connecting sheets 10 are prevented from being touched by mistake, electric shock risks are reduced, and use safety is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electrical energy metering junction box, comprising:
a plurality of connecting pieces;
the voltage connection module comprises a voltage connection block and at least two voltage output terminals which are insulated from each other, and the voltage connection block is electrically connected with the at least two voltage output terminals by virtue of the connection sheet;
the first current wiring module comprises a first current connecting block and at least two first current output terminals which are insulated from each other, and the first current connecting block is electrically connected with the at least two first current output terminals by virtue of the connecting sheet; and
and the second current wiring module comprises a second current connecting block and at least two second current output terminals which are insulated from each other, the second current connecting block is respectively electrically connected with the at least two second current output terminals by means of the connecting sheet, and one of the second current output terminals is electrically connected with the first current output terminal by means of the connecting sheet.
2. The electrical energy metering junction box of claim 1, wherein the voltage connection block comprises a voltage input terminal and a voltage intermediate terminal in one-to-one correspondence with the voltage output terminals, the voltage input terminal being electrically connected with the voltage intermediate terminal, the voltage intermediate terminal being electrically connected with the corresponding voltage output terminal by means of the connection tab;
the first current connecting block comprises a first current input terminal and first current intermediate terminals in one-to-one correspondence with the first current output terminals, the first current input terminal is electrically connected with the first current intermediate terminals, and the first current intermediate terminals are electrically connected with the corresponding first current output terminals by means of the connecting sheets;
the second current connecting block comprises a second current input terminal and second current intermediate terminals in one-to-one correspondence with the second current output terminals, the second current input terminal is electrically connected with the second current intermediate terminals, and the second current intermediate terminals are electrically connected with the corresponding second current output terminals by means of the connecting sheets.
3. The electrical energy metering junction box of claim 2, wherein the first current junction module includes a first terminal electrically connected to a first current output terminal, and the second current junction module includes a second terminal electrically connected to a second current output terminal;
the second terminal is electrically connected with the first terminal by means of the connecting sheet.
4. The electrical energy metering junction box of claim 3, wherein each of the connecting plates is provided with a slot, and the voltage intermediate terminal, the first current intermediate terminal, the second current intermediate terminal and the second terminal are respectively inserted into one of the slots;
the connecting piece has a stroke sliding along the longitudinal extension direction of the slotted hole, so that one end of the connecting piece along the longitudinal extension direction of the slotted hole is connected with or separated from the voltage output terminal, the first current output terminal, the second current output terminal or the first terminal.
5. The electrical energy metering junction box of claim 4, wherein the connecting piece is provided with a shifting piece along the other end of the slotted hole in the longitudinal extension direction;
the shifting piece protrudes out of one side of the connecting piece.
6. The electric energy metering junction box of claim 5, further comprising a box body and a cover body detachably connected with the box body, wherein the voltage wiring module, the first current wiring module and the second current wiring module are respectively arranged in the box body, and the poking piece protrudes out of one side of the connecting piece close to the cover body;
one side of the cover body close to the box body is provided with limiting parts in one-to-one correspondence with the shifting pieces, and the limiting parts are arranged at intervals along the longitudinal extension direction of the slotted hole and the corresponding shifting pieces so as to limit the shifting pieces.
7. The electrical energy metering junction box of claim 3, further comprising a plurality of first pods and a plurality of second pods;
the first cushion block is arranged below the voltage intermediate terminal, the first current intermediate terminal and the second current intermediate terminal respectively, and one ends of the voltage intermediate terminal, the first current intermediate terminal and the second current intermediate terminal, which are far away from the first cushion block, penetrate through the slotted holes;
the second cushion blocks are respectively arranged below the voltage output terminal, the first current output terminal and the second current output terminal, and one ends of the voltage output terminal, the first current output terminal and the second current output terminal, which are far away from the second cushion blocks, are connected with one ends of the connecting sheets, which are far away from the slotted holes.
8. The electrical energy metering junction box of claim 7 further comprising an insulating bulkhead;
the first cushion block, the second cushion block and one end of the voltage input terminal close to the connecting sheet, one end of the first current input terminal close to the connecting sheet and one end of the second current input terminal close to the connecting sheet are respectively arranged on the insulating transverse partition plate in a penetrating mode.
9. The electrical energy metering junction box of claim 1, wherein the number of the voltage junction modules, the number of the first current junction modules and the number of the second current junction modules are all plural, and one first current junction module and one second current junction module are arranged between two adjacent voltage junction modules.
10. The electrical energy metering junction box of claim 9 further comprising a plurality of insulating vertical partitions;
and the insulating vertical partition plates are arranged among the adjacent voltage wiring modules, the adjacent first current wiring modules and the adjacent second current wiring modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210619579.4A CN115207852A (en) | 2022-06-02 | 2022-06-02 | Electric energy metering junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210619579.4A CN115207852A (en) | 2022-06-02 | 2022-06-02 | Electric energy metering junction box |
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| Publication Number | Publication Date |
|---|---|
| CN115207852A true CN115207852A (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210619579.4A Pending CN115207852A (en) | 2022-06-02 | 2022-06-02 | Electric energy metering junction box |
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| CN (1) | CN115207852A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201048206Y (en) * | 2007-06-26 | 2008-04-16 | 罗若晖 | Electric energy metering anti-error connecting terminal box |
| CN102798743A (en) * | 2012-08-29 | 2012-11-28 | 重庆市电力公司电力科学研究院 | Wiring terminal box for electric energy meter |
| CN204556692U (en) * | 2015-05-06 | 2015-08-12 | 广东电网有限责任公司江门供电局 | Multiple way electric metering junction box |
| US20190069419A1 (en) * | 2017-08-31 | 2019-02-28 | Han Chuang International Co., Ltd. | Wall-mounted device |
| CN210167760U (en) * | 2019-04-04 | 2020-03-20 | 国网山东省电力公司济宁供电公司 | Novel directional rail type junction box |
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2022
- 2022-06-02 CN CN202210619579.4A patent/CN115207852A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201048206Y (en) * | 2007-06-26 | 2008-04-16 | 罗若晖 | Electric energy metering anti-error connecting terminal box |
| CN102798743A (en) * | 2012-08-29 | 2012-11-28 | 重庆市电力公司电力科学研究院 | Wiring terminal box for electric energy meter |
| CN204556692U (en) * | 2015-05-06 | 2015-08-12 | 广东电网有限责任公司江门供电局 | Multiple way electric metering junction box |
| US20190069419A1 (en) * | 2017-08-31 | 2019-02-28 | Han Chuang International Co., Ltd. | Wall-mounted device |
| CN210167760U (en) * | 2019-04-04 | 2020-03-20 | 国网山东省电力公司济宁供电公司 | Novel directional rail type junction box |
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