CN216528685U - Frame type circuit breaker - Google Patents
Frame type circuit breaker Download PDFInfo
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- CN216528685U CN216528685U CN202122827748.7U CN202122827748U CN216528685U CN 216528685 U CN216528685 U CN 216528685U CN 202122827748 U CN202122827748 U CN 202122827748U CN 216528685 U CN216528685 U CN 216528685U
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Abstract
The utility model discloses a frame type circuit breaker, which relates to the technical field of electrical equipment and comprises a circuit breaker body, and a signal acquisition module, a metering module and a control unit which are connected with the circuit breaker body, wherein the metering module is connected with the control unit, the signal acquisition module comprises a protection mutual inductor, a metering mutual inductor and a voltage sampling circuit, the metering mutual inductor and the voltage sampling circuit are respectively connected with the metering module, the protection mutual inductor is connected with the control unit, and the control unit is connected with the circuit breaker body to control the opening of the circuit breaker body. The frame-type circuit breaker provided by the utility model can realize the metering function of the circuit breaker while protecting a circuit so as to respond to the demand of the power internet of things.
Description
Technical Field
The application relates to the technical field of electrical equipment, in particular to a frame type circuit breaker.
Background
The frame type circuit breaker is also called universal circuit breaker, and is a mechanical switch electric appliance which can connect, bear and break the current under the normal circuit condition, and can also connect, bear and break the current for a certain time under the specified abnormal circuit condition. Conventional circuit breakers are used to distribute electrical energy and to protect lines and power equipment from overloads, undervoltages, short circuits, etc. The circuit breaker generally comprises a steel frame, all parts are arranged in the frame, the capacity is large, a multifunctional release and a plurality of auxiliary contacts can be installed, and the circuit breaker has high breaking capacity and thermal stability, so that the circuit breaker is commonly used in places requiring high breaking capacity and selective protection.
Along with increase high accuracy measurement and thing allies oneself with the function that the new standard of national electric power thing networking proposed, current frame-type circuit breaker has protect function, inside is provided with the mutual-inductor and samples the signal of telecommunication in the frame-type circuit breaker, when the electric current or the voltage that the sampling was obtained are higher than the predetermined threshold value, the frame-type circuit breaker separating brake, accomplish the protect function to the rear end load, however, the signal precision that the current frame-type circuit breaker sampling was obtained is low, can not satisfy the requirement of measurement, so can not carry out accurate statistics to the electric quantity to just can not satisfy the demand of electric power thing networking.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a frame-type circuit breaker, can realize the measurement function of circuit breaker in the protection circuit to respond electric power thing networking demand.
The embodiment of the application is realized as follows:
the utility model provides a frame-type circuit breaker, includes circuit breaker body and the signal acquisition module, metering module and the control unit of being connected with circuit breaker body, metering module is connected with the control unit, and signal acquisition module includes protection transformer, metering transformer and voltage sampling circuit, and metering transformer and voltage sampling circuit are connected with metering module respectively, and protection transformer is connected with the control unit, and the control unit is connected with circuit breaker body in order to control the separating brake of circuit breaker body.
As an implementable manner, the frame-type circuit breaker further comprises an operational amplifier sampling circuit, and the protection transformer, the operational amplifier sampling circuit and the control unit are sequentially connected.
As an implementable mode, the frame-type circuit breaker further comprises a power supply mutual inductor and a power supply matching module connected with the power supply mutual inductor, the power supply matching module is respectively connected with the operational amplifier sampling circuit and the control unit, and the power supply mutual inductor supplies power to the operational amplifier sampling circuit and the control unit through the power supply matching module.
As a practical way, the voltage sampling circuit is further connected with the operational amplifier sampling circuit.
As a practical way, the metering module and the control unit can be connected in a pluggable manner.
As an implementable mode, the control unit is provided with a plurality of contact pins, the metering module is provided with a plurality of wiring holes corresponding to the contact pins, and the contact pins are inserted into the wiring holes to enable the metering module to be connected with the control unit in a pluggable mode.
As an implementation manner, the frame-type circuit breaker further includes an actuating mechanism connected to the control unit, and the actuating mechanism is connected to the trip control end of the circuit breaker body and is configured to control the trip of the trip according to the opening signal of the control unit.
As an implementable manner, the metering module is fixedly connected with the control unit.
As an implementable manner, the control unit further comprises a communication module for connecting with an external device.
As an implementable manner, the frame type circuit breaker further comprises a display, and the control unit is connected with the display.
The beneficial effects of the embodiment of the application include:
the utility model provides a frame type circuit breaker, which comprises a circuit breaker body, a signal acquisition module, a metering module and a control unit, wherein the signal acquisition module, the metering module and the control unit are connected with the circuit breaker body, the signal acquisition module comprises a protection mutual inductor, a metering mutual inductor and a voltage sampling circuit, the metering mutual inductor accurately measures the current value of the current passing through the metering mutual inductor, the voltage sampling circuit is used for measuring the voltage value of the current, the metering mutual inductor and the voltage sampling circuit are respectively connected with the metering module, the metering module calculates the electric quantity of the current according to the current value and the voltage so as to achieve the metering function of the frame type circuit breaker, the protection mutual inductor is connected with the control unit, the control unit is connected with the circuit breaker body so as to control the opening of the circuit breaker body, the protection mutual inductor measures the current value of the current passing through the protection mutual inductor and transmits the current value to the control unit, and the control unit judges whether the current value is in the current range or not, if the current value exceeds the current value threshold, the control unit controls the breaker body to open, so that the effect of protecting the circuit is achieved. The frame type circuit breaker can protect a circuit and simultaneously realize the metering function of the circuit breaker so as to meet the requirement of a corresponding power internet of things, and when the frame type circuit breaker is used, a metering device does not need to be additionally arranged, so that the space and the cost can be saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a connection diagram of a frame type circuit breaker according to an embodiment of the present disclosure;
fig. 2 is a second connection diagram of a frame type circuit breaker according to an embodiment of the present application.
Icon: 100-frame circuit breaker; 110-a circuit breaker body; 121-a protection transformer; 122-a metering transformer; 123-a voltage sampling circuit; 130-a metering module; 140-a control unit; 150-an operational amplifier sampling circuit; 160-supply transformer; 161-power matching module; 170-an actuator; 180-a communication module; 190-display.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and in a manner that would be apparent to those of ordinary skill in the art and in a specific context to which such terms are intended.
The frame type circuit breaker is used for breaking currents under normal circuit conditions, so that a function of protecting a circuit is achieved, a mutual inductor is arranged inside the frame type circuit breaker and is used for sampling electric signals in the frame type circuit breaker, and when the currents or the voltages obtained through sampling are higher than a preset threshold value, the frame type circuit breaker is switched off. The existing frame-type circuit breaker has low sampling signal precision and can not meet the measurement requirement, so that the electric quantity can not be accurately counted, and the requirement of the power internet of things can not be met.
The utility model provides a frame type circuit breaker 100, as shown in fig. 1, which comprises a circuit breaker body 110, a signal acquisition module, a metering module 130 and a control unit 140, wherein the signal acquisition module, the metering module 130 and the control unit 140 are connected with the circuit breaker body 110, the signal acquisition module comprises a protection transformer 121, a metering transformer 122 and a voltage sampling circuit 123, the metering transformer 122 and the voltage sampling circuit 123 are respectively connected with the metering module 130, the protection transformer 121 is connected with the control unit 140, and the control unit 140 is connected with the circuit breaker body 110 to control the opening of the circuit breaker body 110.
Now, the electricity consumption of the residents is three-phase electricity, the three-phase electricity is a group of three-phase alternating currents with equal amplitude, equal frequency and 120 degrees of phase difference, each conducting wire is generally called a phase wire, also called a live wire, as shown in fig. 1, A, B, C is a live wire in the three-phase electricity, and three tails of the three-phase electricity are connected together and called a neutral wire, also called a zero wire, and denoted by N.
The example, when the power is three-phase alternating current, all be provided with measurement mutual-inductor 122 on every live wire, a current value for measuring the electric current on three live wires respectively, three measurement mutual-inductor 122 is connected with metering module 130 respectively, a current value for on the live wire transmits to metering module 130, three live wires are connected with voltage sampling structure respectively and are used for acquireing the voltage value on three live wires, and transmit voltage value to metering module 130, metering module 130 obtains the electric quantity on three live wires according to voltage value and the current value on three live wires, thereby learn the electric quantity that flows frame-type circuit breaker 100, realize frame-type circuit breaker 100's measurement function. The metering transformer 122 has the advantage of high precision, and can realize high-precision electricity metering.
In addition, each live wire is further provided with a protection transformer 121 for measuring current values of the three live wires respectively, the three protection transformers 121 are connected with the control unit 140 respectively, so as to transmit the current values of the three live wires to the control unit 140, an upper threshold value and a lower threshold value of the current values are stored in the control unit 140, the current values measured by the control unit 140 are compared with the upper threshold value and the lower threshold value respectively, when the current value of at least one live wire of the three live wires is greater than the upper threshold value or less than the lower threshold value, the circuit breaker body 110 is controlled to be switched off, the continuous power supply of the power supply is cut off, the load at the rear end of the circuit breaker is prevented from being damaged by large current or small current, and the protection function of the frame-type circuit breaker 100 is realized. The protection transformer 121 has the advantage of a wide sampling range, and can protect a circuit in a wide range.
It should be noted that the present invention is not limited to three-phase ac, and can be applied to three-line, single-phase ac, and dual-line ac power systems. For other power systems, the live wire is provided with a metering mutual inductor 122 and a protection mutual inductor 121, the current value on the live wire is measured and is respectively transmitted to the metering module 130 and the control unit 140, and the protection mutual inductor 121 is arranged on the zero wire and is used for measuring the current value on the zero wire and transmitting the current on the zero wire to the control unit 140.
It should be noted that the control unit 140 may be provided separately, or may be integrated into a controller of the circuit breaker body, and as a part of the controller, the function of the control unit is implemented.
The utility model provides a frame type circuit breaker 100, which comprises a circuit breaker body 110, a signal acquisition module connected with the circuit breaker body 110, a metering module 130 and a control unit 140, wherein the metering module 130 is connected with the control unit 140, the signal acquisition module comprises a protection transformer 121, a metering transformer 122 and a voltage sampling circuit 123, the metering transformer 122 accurately measures the current value of the current passing through the metering transformer 122, the voltage sampling circuit 123 is used for measuring the voltage value of the current, the metering transformer 122 and the voltage sampling circuit 123 are respectively connected with the metering module 130, the metering module 130 calculates the electric quantity of the current according to the current value and the voltage so as to achieve the metering function of the frame type circuit breaker 100, the protection transformer 121 is connected with the control unit 140, the control unit 140 is connected with the circuit breaker body 110 to control the opening of the circuit breaker body 110, the protection transformer 121 measures the current value of the current passing through the protection transformer 121 and transmits the current value to the control unit 140, the control unit 140 determines whether the current value is within the current range, and if the current value exceeds the current value threshold, the control unit 140 controls the breaker body 110 to open, thereby achieving the effect of protecting the circuit. The frame type circuit breaker 100 can protect a circuit and simultaneously realize the metering function of the circuit breaker so as to meet the requirement of the corresponding power internet of things, and when the frame type circuit breaker 100 is used, no metering device is required to be additionally arranged, so that the space and the cost can be saved.
Optionally, as shown in fig. 1, the frame type circuit breaker 100 further includes an operational amplifier sampling circuit 150, and the protection transformer 121, the operational amplifier sampling circuit 150 and the control unit 140 are sequentially connected.
The electrical signal detected by the protection transformer 121 is often large and cannot be directly connected to an ADC (Analog to digital converter) pin of the control unit 140, the operational amplifier sampling circuit 150 reduces the electrical signal detected by the protection transformer 121 to a range that the ADC pin can receive according to a certain proportion, and the control unit 140 calculates according to the proportion, thereby improving the stability of the control unit 140 obtaining the electrical signal.
In an implementation manner of the embodiment of the present invention, as shown in fig. 1, the frame circuit breaker 100 further includes a power supply transformer 160 and a power supply matching module 161 connected to the power supply transformer 160, the power supply matching module 161 is respectively connected to the operational amplifier sampling circuit 150 and the control unit 140, and the power supply transformer 160 supplies power to the operational amplifier sampling circuit 150 and the control unit 140 through the power supply matching module 161.
When the operational amplifier sampling circuit 150 and the control unit 140 work, a power supply is required to provide energy for the operational amplifier sampling circuit 150 and the control unit 140, and when the frame-type circuit breaker 100 is closed, current passes through the frame-type circuit breaker 100, the present invention adopts that partial current is obtained from the current flowing through the frame-type circuit breaker 100 to supply power for the operational amplifier sampling circuit 150 and the control unit 140, and the power supply transformer 160 is used to obtain partial current from the frame-type circuit breaker 100, but a person skilled in the art should know that the current flowing through the frame-type circuit breaker 100 is usually commercial power and has a large voltage, although the current is processed by the power supply transformer 160, the requirement of the input current of the control unit 140 and the operational amplifier sampling circuit 150 still cannot be met, therefore, after the power supply transformer 160 obtains the current, the power supply matching module 161 processes and distributes the current obtained by the power supply transformer 160, so that the current can be matched with the control unit 140 and the operational amplifier sampling circuit 150, thereby enabling the control unit 140 and the op-amp sampling circuit 150 to operate normally.
Optionally, as shown in fig. 1, the voltage sampling circuit 123 is further connected to the operational amplifier sampling circuit 150.
The voltage sampling circuit 123 is used for reading a voltage value of a current in a line, the same current value is the same, an electric signal detected by the voltage sampling circuit 123 is often large and cannot be directly connected with an ADC pin of the control unit 140, the operational amplifier sampling circuit 150 reduces the electric signal detected by the voltage sampling circuit 123 to a range that the ADC pin can receive according to a certain proportion, and the control unit 140 calculates according to the proportion, so that the stability of the control unit 140 for obtaining the electric signal is improved.
In an implementation manner of the embodiment of the present invention, the metering module 130 and the control unit 140 are connected in a pluggable manner.
In practical use, not all of the frame breakers 100 need to measure the electric quantity, the measuring module 130 is connected to the control unit 140 in a pluggable manner, when the measuring module 130 is inserted into the control unit 140, the frame breaker 100 has both the circuit protection function and the measuring function, and when the measuring module 130 is pulled out of the control unit 140, the breaker has the circuit protection function.
It should be noted that, when the metering module 130 and the control unit 140 are pluggable, in order to facilitate the installation of other elements when the metering module 130 and the control unit 140 are pluggable, the metering transformer 122 and the protection transformer 121 are integrated and connected to the control unit 140, and when the metering module 130 is inserted into the control unit 140, the metering transformer 122 is connected to the metering module 130 through an interface on the control unit 140, so as to implement the metering function of the frame-type circuit breaker 100; when the metering module 130 is pulled out of the control unit 140, the metering transformer 122 is connected to the interface of the control unit 140, and the metering module 130 is not connected, so that the frame circuit breaker 100 only has a protection function.
The metering module 130 and the control unit 140 are connected in a pluggable manner, so that a worker can use the metering module 130 or not use the metering module 130 as required, thereby adapting to more use environments and improving the application flexibility of the frame type circuit breaker 100.
Optionally, the control unit 140 is provided with a plurality of pins, the metering module 130 is provided with a plurality of wiring holes corresponding to the pins, and the pins are inserted into the wiring holes to connect the metering module 130 and the control unit 140 in a pluggable manner. The metering module 130 and the control unit 140 are connected in a pluggable manner through the contact pins and the connecting holes, so that the effectiveness of connection after insertion can be improved, and the contact pins can be quickly inserted into the connecting holes, and the insertion efficiency can be improved.
In an implementation manner of the embodiment of the present invention, as shown in fig. 2, the frame type circuit breaker 100 further includes an actuator 170 connected to the control unit 140, and the actuator 170 is connected to the trip control end of the circuit breaker body 110 for controlling the trip of the trip according to the opening signal of the control unit 140.
When the control unit 140 determines that the voltage or the current exceeds the threshold value and needs to control the opening of the circuit breaker body 110, the control unit 140 is connected with the actuating mechanism 170, the actuating mechanism 170 is connected with the control end of the release of the circuit breaker body 110, and the actuating mechanism 170 drives the control end of the release to move when receiving an opening signal of the control unit 140, so that the release is released, and when the release is released, the frame-type circuit breaker 100 is opened.
Of course, the control unit 140 may also be directly connected to a release of the circuit breaker body 110, and the control unit 140 controls the release to realize the opening of the frame type circuit breaker 100.
Optionally, the metering module 130 is fixedly connected to the control unit 140. The metering module 130 is fixedly connected with the control unit 140, so that the connection between the metering module 130 and the control unit 140 is more firm, and the interference of the external environment is not easy to occur, thereby improving the stability of information transmission between the metering module 130 and the control module and ensuring the validity of the metering data of the metering module 130.
It should be noted that, as for the fixed connection mode between the metering module 130 and the control unit 140, the connection mode is not specifically defined, and the connection mode may be welding, or bonding, or may be directly integrated into the control unit 140 by the metering module 130. Illustratively, the metering module 130 is integrated within the control unit 140 according to the requirements of the actual application.
In an implementation manner of the embodiment of the present invention, as shown in fig. 2, the control unit 140 further includes a communication module 180, and the communication module 180 is configured to connect with an external device.
For the information such as the electric quantity, the electric signal of the circuit, and the state of the frame type circuit breaker 100 obtained by the metering module 130, the control unit 140 may send the information to the external device through the communication module 180, and the external device may know the information of the frame type circuit breaker 100. For example, in some places where traffic is inconvenient and the places are widely sparse, workers need to check the amount of electricity passing through the frame type circuit breaker 100 every month, and check the circuit system and the power distribution system at intervals, which increases labor cost and time cost. The frame-type circuit breaker 100 provided by the utility model can count the electric quantity, test the running state of the power supply system and transmit the information to external equipment through the communication module 180, so that the labor cost and the time cost are saved. The specific transmission mode of the communication module is not limited in the present invention, and may be WiFi, infrared data transmission, bluetooth, etc.
Optionally, as shown in fig. 2, the frame type circuit breaker 100 further includes a display 190, and the control unit 140 is connected to the display 190.
The control unit 140 is connected to the display 190 to send information, such as the electric quantity obtained by the metering module 130, the electric signal of the circuit, and the state of the frame type circuit breaker 100, to the display 190 and display the information on the display 190, so that the information can be visually checked, and the reading efficiency of the worker is improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A frame type circuit breaker (100) is characterized by comprising a circuit breaker body (110), and a signal acquisition module, a metering module (130) and a control unit (140) which are respectively connected with the circuit breaker body (110); metering module (130) with the control unit (140) is connected, the signal acquisition module includes protection transformer (121), metering transformer (122) and voltage sampling circuit (123), metering transformer (122) with voltage sampling circuit (123) respectively with metering module (130) is connected, protection transformer (121) with the control unit (140) is connected, control unit (140) with circuit breaker body (110) is connected in order to control the separating brake of circuit breaker body (110).
2. The frame circuit breaker (100) of claim 1, further comprising an op-amp sampling circuit (150), the protection transformer (121), the op-amp sampling circuit (150) and the control unit (140) being connected in sequence.
3. The frame circuit breaker (100) of claim 2, further comprising a power transformer (160) and a power matching module (161) connected to the power transformer (160), the power matching module (161) being connected to the operational amplifier sampling circuit (150) and the control unit (140), respectively, the power transformer (160) supplying power to the operational amplifier sampling circuit (150) and the control unit (140) through the power matching module (161).
4. The frame circuit breaker (100) of claim 2, wherein the voltage sampling circuit (123) is further connected to the op-amp sampling circuit (150).
5. The frame circuit breaker (100) of claim 1, wherein the metering module (130) is pluggable to the control unit (140).
6. The frame type circuit breaker (100) of claim 5, wherein a plurality of pins are provided on the control unit (140), and a plurality of wiring holes are provided on the metering module (130) corresponding to the pins, and the pins are inserted into the wiring holes so that the metering module (130) is connected with the control unit (140) in a pluggable manner.
7. The frame circuit breaker (100) of claim 1, further comprising an actuator (170) connected to the control unit (140), wherein the actuator (170) is connected to a trip control end of the circuit breaker body (110) for controlling the trip of the trip unit according to a trip signal of the control unit (140).
8. The frame circuit breaker (100) of claim 1, wherein the metering module (130) is fixedly connected with the control unit (140).
9. The frame circuit breaker (100) of claim 1, wherein said control unit (140) further comprises a communication module (180), said communication module (180) being adapted to be connected to an external device.
10. The frame circuit breaker (100) of claim 1, further comprising a display (190), the control unit (140) being connected to the display (190).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122827748.7U CN216528685U (en) | 2021-11-17 | 2021-11-17 | Frame type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122827748.7U CN216528685U (en) | 2021-11-17 | 2021-11-17 | Frame type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528685U true CN216528685U (en) | 2022-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122827748.7U Active CN216528685U (en) | 2021-11-17 | 2021-11-17 | Frame type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528685U (en) |
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2021
- 2021-11-17 CN CN202122827748.7U patent/CN216528685U/en active Active
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