CN213398700U - Metering device and circuit breaker - Google Patents
Metering device and circuit breaker Download PDFInfo
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- CN213398700U CN213398700U CN202021938533.1U CN202021938533U CN213398700U CN 213398700 U CN213398700 U CN 213398700U CN 202021938533 U CN202021938533 U CN 202021938533U CN 213398700 U CN213398700 U CN 213398700U
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- metering device
- housing
- precision
- transformer
- circuit breaker
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Abstract
The utility model provides a metering device and circuit breaker relates to low-voltage electrical technology field, the utility model provides a metering device includes: the shell, the detection assembly and the sampling circuit board are both arranged in the shell; the detection assembly comprises a current transformer and a high-precision transformer; the current transformer and the high-precision transformer are provided with abdicating holes for the conductive buses to pass through, and the sampling circuit board is electrically connected with the current transformer and the high-precision transformer. The utility model provides a metering device has alleviated and has increased the measurement mutual-inductor in the circuit breaker outside among the correlation technique, occupies the technical problem of cabinet body volume.
Description
Technical Field
The utility model belongs to the technical field of the low pressure electrical technology and specifically relates to a metering device and circuit breaker are related to.
Background
The development of modern industrial technology puts higher requirements on the operation reliability and intelligent management of a low-voltage power distribution system, and the wide application of a microprocessing technology and the great improvement of the reliability of a computer system enable intelligent low-voltage appliances to be rapidly developed, so that intelligent low-voltage appliance products are produced. Compared with the development of comprehensive protection and system monitoring of a low-voltage power distribution system and the application of the low-voltage power distribution system in a power system, the intelligent research and the application of the low-voltage molded case circuit breaker directly facing power distribution customers are relatively late.
The existing molded case circuit breakers which are not few in application to low-voltage power distribution systems generally have the defects of low precision, large deviation range of setting values and the like in the measurement of parameters such as current and voltage, and although the basic protection and measurement functions can be met, the development requirements of modern power systems on larger and larger scales, more and more power supplies and higher protection and measurement precision requirements cannot be met in many occasions. In order to achieve higher precision, a metering transformer is generally added outside the circuit breaker, and the volume of a cabinet body is occupied.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a metering device and circuit breaker to increase the measurement mutual-inductor in the circuit breaker outside in alleviating correlation technique, occupy the technical problem of cabinet body volume.
In a first aspect, the present invention provides a metering device comprising: the device comprises a shell, a detection assembly and a sampling circuit board, wherein the detection assembly and the sampling circuit board are both arranged in the shell; the detection assembly comprises a current transformer and a high-precision transformer, the current transformer and the high-precision transformer are provided with a abdicating hole for the conductive bus to pass through, and the sampling circuit board is electrically connected with the current transformer and the high-precision transformer.
With reference to the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the detection component is connected to the housing by a clamping connection.
With reference to the first possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the sampling circuit board is located between the current transformer and the side wall of the housing.
In combination with the first possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the housing includes a first mounting plate and a second mounting plate that are connected perpendicularly to each other, and the current transformer and the high-precision transformer are located between the first mounting plate and the second mounting plate.
In combination with any one of the first to fourth possible implementation manners of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the number of the current transformers and the number of the high-precision transformers are both multiple, and the high-precision transformers are connected to the current transformers in a one-to-one manner.
In a second aspect, the present invention provides a circuit breaker comprising a housing, a controller and a first aspect, wherein the metering device is provided with a sampling circuit board, and the controller is electrically connected to the sampling circuit board.
In combination with the first possible implementation manner of the second aspect, the present invention provides a second possible implementation manner of the second aspect, wherein the controller and the sampling circuit board are plugged through a secondary terminal.
In combination with the first possible implementation manner of the second aspect, the present invention provides a third possible implementation manner of the second aspect, wherein the circuit breaker includes a bottom plate and a base, the base is disposed in the housing, the bottom plate covers the open end of the housing, and the metering device is disposed between the bottom plate and the base.
With reference to the third possible implementation manner of the second aspect, the present invention provides a fourth possible implementation manner of the second aspect, wherein the bottom plate is provided with a through hole for passing the conductive bus bar.
In combination with the first possible implementation manner of the second aspect, the present invention provides a fifth possible implementation manner of the second aspect, wherein the metering device is installed in the housing through a screw.
The utility model provides a metering device and circuit breaker, metering device includes: the shell, the detection assembly and the sampling circuit board are both arranged in the shell; the detection assembly comprises a current transformer and a high-precision transformer, the current transformer and the high-precision transformer are provided with abdicating holes for the conductive buses to pass through, and the sampling circuit board is electrically connected with the current transformer and the high-precision transformer. The utility model provides a metering device is structure as an organic whole, can assemble in the circuit breaker modularly, and high accuracy mutual-inductor's setting can improve measurement accuracy, and conductive bus passes the hole of stepping down of current transformer and high accuracy mutual-inductor and reduces metering device's volume to the reduction occupies the inside space of circuit breaker.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a metering device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.
Icon: 100-a housing; 110-a first mounting plate; 120-a second mounting plate; 200-a current transformer; 210-a relief hole; 300-high precision mutual inductor; 310-a conductive bus; 400-a sampling circuit board; 500-a housing; 600-a controller; 700-a base; 800-bottom plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, the embodiment of the present invention provides a metering device, including: a housing 100 and a detection assembly and a sampling circuit board 400 both mounted within the housing 100; the detection assembly includes a current transformer 200 and a high precision transformer 300, the current transformer 200 and the high precision transformer 300 have a relief hole 210 through which a conductive bus 310 passes, and a sampling circuit board 400 is electrically connected to the current transformer 200 and the high precision transformer 300.
Specifically, the abdicating hole 210 on the current transformer 200 and the abdicating hole 210 on the high-precision transformer 300 are both through holes, the conductive bus 310 passes through the abdicating hole 210, and two ends of the conductive bus respectively extend out of the current transformer 200 and the high-precision transformer 300. Current transformer 200, high accuracy mutual-inductor 300 and sampling circuit board 400 all install in shell 100, and shell 100 plays the guard action to current transformer 200 and high accuracy mutual-inductor 300 to the cooperation of shell 100 and the casing 500 of circuit breaker is installed metering device in the circuit breaker, realizes the modularization installation, thereby realizes making things convenient for the installation of current transformer 200 and high accuracy mutual-inductor 300.
In some embodiments, the detection assembly can be mounted to the housing 100 by an adhesive or a screw connection, and in this embodiment, the detection assembly is connected to the housing 100 by a snap connection.
Specifically, the detection assembly further comprises an installation shell, and the current transformer 200 and the high-precision transformer 300 are installed in the installation shell in a clamping or bonding mode, so that the current transformer 200 and the high-precision transformer 300 are combined into an integral structure. Be equipped with the draw-in groove in the shell 100, the installation shell joint is in the draw-in groove to the realization is with the determine module joint in shell 100, with the determine module joint in shell 100 back, through the mode reinforcement current transformer 200 of encapsulating and the steadiness of being connected between high accuracy mutual-inductor 300 and the shell 100. The detection assembly is connected with the shell 100 in a clamping mode, and the current transformer 200 and the high-precision transformer 300 are conveniently installed in the shell 100.
Further, the sampling circuit board 400 is located between the current transformer 200 and the sidewall of the case 100.
As shown in fig. 1, an opening is provided on the case 100, the sampling circuit board 400 is provided between the current transformer 200 and the side wall of the case 100, and one end of the sampling circuit board 400 extends through the opening, the sampling circuit board 400 is used for connecting with a controller 600 in the circuit breaker, and signals of the current transformer 200 and the high-precision transformer 300 are output to the sampling circuit board 400. The sampling circuit board 400 is located between the current transformer 200 and the side wall of the housing 100, and the current transformer 200 and the side wall of the housing 100 cooperate to protect the sampling circuit board 400.
Further, the enclosure 100 includes a first mounting board 110 and a second mounting board 120 which are connected perpendicularly to each other, and the current transformer 200 and the high-precision transformer 300 are located between the first mounting board 110 and the second mounting board 120.
Specifically, the length direction of the first mounting plate 110 is the same as the length direction of the second mounting plate 120, and the length of the first mounting plate 110 is the same as the length of the second mounting plate 120, and the width of the first mounting plate 110 is smaller than the width of the second mounting plate 120. Further, the first mounting plate 110 and the second mounting plate 120 are an integrated structure, and in particular, may be formed by bending a plate material, which facilitates the processing of the housing 100. The current transformer 200 and the high-precision transformer 300 are both mounted on the inner surface of the second mounting plate 120, and the rear end of the conductive bus 310 passing through the abdicating hole 210 of the current transformer 200 and the high-precision transformer 300 is located outside the first mounting plate 110. The first mounting board 110 and the second mounting board 120 cooperate to protect the current transformer 200, the high-precision transformer 300 and the sampling circuit board 400.
Further, the number of the current transformers 200 and the number of the high-precision transformers 300 are both multiple, and the multiple high-precision transformers 300 are connected with the multiple current transformers 200 in a one-to-one correspondence manner.
The number of the current transformers 200 and the number of the high-precision transformers 300 can be two, three or four, and the like, in the embodiment, the number of the current transformers 200 and the number of the high-precision transformers 300 are three, and the three high-precision transformers 300 are connected with the three current transformers 200 in a one-to-one correspondence manner to form three detection assemblies. Specifically, three detection assemblies are distributed along the length of the second mounting plate 120 and are each connected to the inner surface of the second mounting plate 120 by a mounting shell. The three conductive bus bars 310 pass through the escape holes 210 of the corresponding current transformer 200 and high-precision transformer 300, and protrude at the upper end thereof out of the first mounting plate 110. The plurality of current transformers 200 cooperate with the plurality of high precision transformers 300 to perform measurements.
Example two
As shown in fig. 2, the embodiment of the present invention provides a circuit breaker, which includes a housing 500, a controller 600 and a metering device of the first embodiment, wherein the controller 600 and the metering device are both disposed in the housing 500, and a sampling circuit board 400 in the metering device is electrically connected to the controller 600.
Specifically, the casing 500 is an open casing, the controller 600 and the metering device are both installed in the casing 500, the controller 600 is located on one side of the metering device, which is away from the opening of the casing 500, the metering device can be modularly installed in the casing 500, the installation is convenient, and the high-precision mutual inductor 300 can be used for improving the measurement precision.
Further, the controller 600 and the sampling circuit board 400 are plugged through the secondary terminal. The metering device is conveniently installed in the shell 500, the space occupied by the metering device inside the circuit breaker can be reduced, and the sampling precision of current and voltage signals is effectively improved.
Further, the circuit breaker includes a bottom plate 800 and a base 700, the base 700 is disposed in the housing 500, the bottom plate 800 covers an opening end of the housing 500, and the metering device is disposed between the bottom plate 800 and the base 700.
The base 700 is mounted on the inner wall of the housing 500 near the opening of the housing 500, the base 700 may be mounted in the housing 500 by means of screw connection or adhesion, when the metering device is mounted in the housing 500, the metering device is placed on the base 700, and the housing 100 of the metering device is connected to the base 700 by means of screws, thereby mounting the metering device in the housing 500.
The bottom plate 800 is installed at an opening of the housing 500, and is used for closing the housing 500 and preventing external impurities from entering the housing 500, so as to protect elements in the housing 500.
Further, the base plate 800 is provided with a through hole for the conductive bus bar 310 to pass through.
Specifically, the lower end of the conductive bus 310 extends out of the high-precision transformer 300, and when the metering device is installed in the housing 500, the lower end of the conductive bus 310 extends out of the opening of the housing 500. The bottom plate 800 is provided with through holes having the same number as the number of the conductive bus bars 310, and the plurality of conductive bus bars 310 pass through the plurality of through holes in a one-to-one correspondence manner so as to extend out of the housing 500. The base plate 800 supports the conductive bus bar 310, and further, the base plate 800 is made of an insulating material to prevent components inside the circuit breaker from being electrically connected to the outside.
The housing 100 of the metering device may be mounted in the housing 500 by means of bonding or screwing, in this embodiment, the metering device is mounted in the housing 500 by means of screws. Specifically, the housing 100 is coupled to the base 700 by screws, thereby mounting the metering device within the housing 500. The metering device is mounted in the housing 500 through screws, so that the metering device is convenient to mount, and the connection stability is improved.
The embodiment of the utility model provides a metering device and circuit breaker, metering device includes: a housing 100 and a detection assembly and a sampling circuit board 400 both mounted within the housing 100; the detection assembly includes a current transformer 200 and a high precision transformer 300, the current transformer 200 and the high precision transformer 300 have a relief hole 210 through which a conductive bus 310 passes, and a sampling circuit board 400 is electrically connected to the current transformer 200 and the high precision transformer 300. The embodiment of the utility model provides a metering device structure as an organic whole can assemble in the circuit breaker modularly, and high accuracy mutual-inductor 300's setting can improve measurement accuracy to conductive bus 310 pass current transformer 200 and high accuracy mutual-inductor 300 step down hole 210 and reduce metering device's volume, thereby reduce and occupy the inside space of circuit breaker.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A metering device, comprising: a housing (100) and a detection assembly and a sampling circuit board (400) both mounted within the housing (100);
the detection assembly comprises a current transformer (200) and a high-precision transformer (300), the current transformer (200) and the high-precision transformer (300) are provided with a yielding hole (210) for a conductive bus (310) to pass through, and the sampling circuit board (400) is electrically connected with the current transformer (200) and the high-precision transformer (300).
2. The metering device of claim 1, wherein the detection assembly is connected to the housing (100) by means of a snap fit.
3. The metering device of claim 1, wherein the sampling circuit board (400) is located between the current transformer (200) and a side wall of the housing (100).
4. The metering device of claim 1, wherein the housing (100) comprises a first mounting plate (110) and a second mounting plate (120) connected perpendicular to each other, the current transformer (200) and the high-precision transformer (300) being located between the first mounting plate (110) and the second mounting plate (120).
5. The metering device according to any one of claims 1 to 4, wherein the number of the current transformers (200) and the number of the high-precision transformers (300) are both multiple, and the multiple high-precision transformers (300) are connected with the multiple current transformers (200) in a one-to-one correspondence manner.
6. A circuit breaker, characterized in that it comprises a housing (500), a controller (600) and a metering device according to any one of claims 1 to 5, said controller (600) and said metering device being both arranged inside said housing (500), a sampling circuit board (400) of said metering device being electrically connected to said controller (600).
7. The circuit breaker of claim 6 wherein said controller (600) and said sampling circuit board (400) are plugged together through secondary terminals.
8. The circuit breaker according to claim 6, wherein said circuit breaker comprises a base plate (800) and a base (700), said base (700) being disposed within said housing (500), said base plate (800) covering an open end of said housing (500), said metering device being disposed between said base plate (700) and said base plate (800).
9. The circuit breaker according to claim 8, characterized in that said bottom plate (800) is provided with a through hole for the passage of said conductive bus bar (310).
10. The circuit breaker according to claim 6, characterized in that said metering device is mounted in said housing (500) by means of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938533.1U CN213398700U (en) | 2020-09-07 | 2020-09-07 | Metering device and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938533.1U CN213398700U (en) | 2020-09-07 | 2020-09-07 | Metering device and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213398700U true CN213398700U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021938533.1U Active CN213398700U (en) | 2020-09-07 | 2020-09-07 | Metering device and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213398700U (en) |
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2020
- 2020-09-07 CN CN202021938533.1U patent/CN213398700U/en active Active
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