CN213367172U - Novel electrical distribution box - Google Patents
Novel electrical distribution box Download PDFInfo
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- CN213367172U CN213367172U CN202022001834.8U CN202022001834U CN213367172U CN 213367172 U CN213367172 U CN 213367172U CN 202022001834 U CN202022001834 U CN 202022001834U CN 213367172 U CN213367172 U CN 213367172U
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Abstract
The utility model discloses a novel electric distribution box is provided with the master switch in the block terminal, the master switch includes electromagnetic relay, and mains supply links to each other with electromagnetic relay's input, electromagnetic relay's output has the distribution terminal box through cable junction, electromagnetic relay's control end has the controller through cable junction, the controller is connected with a plurality of current sensor, current sensor sets up on mains supply's cable, the controller is according to current sensor's numerical control electromagnetic relay's switching. By arranging the device, the magnitude of leakage current can be detected, the numerical value of leakage protection can be adjusted according to needs, and the use safety and practicability are realized; the device can detect the change rate of the current, judge the safety of the power supply circuit according to the change rate and intelligently cut off the power supply.
Description
Technical Field
The utility model relates to an electric field especially relates to a novel electric distribution box.
Background
The distribution box is a common electrical device, generally a low-voltage distribution box formed by assembling switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to electrical wiring. In normal operation, the circuit can be switched on or off by means of a manual or automatic switch.
The distribution box has the characteristics of small volume, simple and convenient installation, special technical performance, fixed position, unique configuration function, no field limitation, universal application, stable and reliable operation, high space utilization rate, less occupied area and environmental protection effect.
The existing distribution box is provided with an air switch as a protection device, the critical point of the leakage reaction of the device is fixed, if the leakage point is too high, danger is easily brought, and electric shock protection in the case of no leakage can not be carried out.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to the problem that above-mentioned exists, provide a novel electric distribution box, this device adjusts the reaction point of electric leakage to can realize protecting the safety of using electricity to the non-electric leakage electric shock.
The utility model adopts the technical scheme as follows:
the utility model provides a novel electric distribution box, is provided with the master switch in the block terminal, the master switch includes electromagnetic relay, and mains supply links to each other with electromagnetic relay's input, electromagnetic relay's output has the distribution terminal box through cable junction, electromagnetic relay's control end has the controller through cable junction, the controller is connected with a plurality of current sensor, current sensor sets up on mains supply's cable, the controller is according to current sensor's numerical control electromagnetic relay's switching.
Further, the utility model discloses a novel preferred structure of electric distribution box, the controller includes MCU, it compares the module to be provided with the electric current in the MCU, the electric current is compared the module and is used for calculating current sensor's current difference and rate of change.
Further, current sensor includes first current sensor, second current sensor, mains power supply's cable includes live wire, zero line, first current sensor sets up on the live wire, second current sensor sets up on the zero line.
Further, MCU is connected with switch circuit, switch circuit is connected with the electromagnetic relay electricity, the current ratio module is used for comparing the electric current difference that first current sensor, second current sensor detected, and when the difference reaches certain numerical value, MCU intercommunication crosses switch circuit control electromagnetic relay switching.
The power supply circuit is characterized by further comprising a power supply circuit, wherein the input end of the power supply circuit is connected with a live wire and a zero wire of a mains supply through a cable, and the connection position of the power supply circuit and the live wire and the zero wire is positioned at the front end of the electromagnetic relay; and the output end of the power supply circuit is electrically connected with the controller.
Furthermore, the electric energy input end of the switch circuit is electrically connected with the power circuit, the electric energy output end of the switch circuit is electrically connected with the electromagnetic relay, and the control end of the switch circuit is connected with the MCU through signals.
Furthermore, the MCU is connected with a first A/D conversion circuit and a second A/D conversion circuit, the analog input end of the first A/D conversion circuit is connected with the first current sensor through a signal, the digital signal output end of the first A/D conversion circuit is connected with the MCU through a signal, the analog input end of the second A/D conversion circuit is connected with the second current sensor through a signal, and the digital signal output end of the second A/D conversion circuit is connected with the MCU through a signal.
Furthermore, fuses are arranged on the live wire and the zero wire; and a power distribution switch is arranged on the power distribution junction box.
Furthermore, the box wall of the distribution box is provided with double-layer protective layers, and an insulating layer is arranged between the double-layer protective layers; the distribution box is connected with a box door, and a safety lock is arranged between the distribution box and the box door.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. by arranging the device, the magnitude of leakage current can be detected, the numerical value of leakage protection can be adjusted according to needs, and the use safety and practicability are realized;
2. through setting up this device, can detect the rate of change of electric current, judge the security of power supply circuit according to the rate of change, intelligent outage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic diagram of the circuit structure of the present invention;
the labels in the figure are: the intelligent safety box comprises a distribution box 1, a box door 2, a safety lock 3, a double-layer protective layer 4, a distribution junction box 5, a distribution switch 6, a main switch 7, a controller 8, a power circuit 9, a first current sensor 10, a second current sensor 11, an electromagnetic relay 12, a fuse 13, a live wire 14 and a zero wire 15.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1, 2 and 3, the utility model discloses a novel electric distribution box, the box wall of the distribution box 1 is provided with a double-layer protective layer 4, and an insulating layer is arranged between the double-layer protective layer 4; the distribution box 1 is connected with a box door 2, and a safety lock 3 is arranged between the distribution box 1 and the box door 2. Be provided with master switch 7 in block terminal 1, master switch 7 is connected with distribution terminal box 5.
The cable of the commercial power supply comprises a live wire 14 and a zero wire 15, and fuses 13 are arranged on the live wire 14 and the zero wire 15; the main switch 7 comprises an electromagnetic relay 12, a mains supply is connected with the input end of the electromagnetic relay 12, and the output end of the electromagnetic relay 12 is connected with the distribution junction box 5 through a cable.
The control end of the electromagnetic relay 12 is connected with a controller 8 through a cable, the controller 8 is connected with a first current sensor 10 and a second current sensor 11, the first current sensor 10 is arranged on a live wire 14, and the second current sensor 11 is arranged on a zero wire 15.
The controller 8 comprises an MCU, wherein a current comparison module is arranged in the MCU and used for calculating a current difference value and a change rate of the current sensor. The current comparison module is used for comparing current difference values detected by the first current sensor 10 and the second current sensor 11, and when the difference values reach a certain numerical value, the MCU is communicated with the switch circuit to control the electromagnetic relay 12 to be switched on and switched off.
The power supply circuit comprises a power supply circuit 9, wherein the input end of the power supply circuit 9 is connected with a live wire 14 and a zero wire 15 of a mains supply through cables, and the connection positions of the power supply circuit and the live wire 14 and the zero wire 15 are positioned at the front end of an electromagnetic relay 12; the output end of the power supply circuit 9 is electrically connected with the controller 8. The MCU is connected with a switch circuit, the switch circuit is electrically connected with the electromagnetic relay 12, the electric energy input end of the switch circuit is electrically connected with the power circuit 9, the electric energy output end of the switch circuit is electrically connected with the electromagnetic relay 12, and the control end of the switch circuit is connected with the MCU through signals.
The MCU is connected with a first A/D conversion circuit and a second A/D conversion circuit, the analog input end of the first A/D conversion circuit is in signal connection with the first current sensor 10, the digital signal output end of the first A/D conversion circuit is in signal connection with the MCU, the analog input end of the second A/D conversion circuit is in signal connection with the second current sensor 11, and the digital signal output end of the second A/D conversion circuit is in signal connection with the MCU.
In a specific operation process, a dangerous current value and a dangerous current change value are preset in the MCU, and the controller 8 is provided with a display input device or inputs the dangerous current value and the dangerous current change value through the display input device.
The first current sensor 10 detects the current of the live wire 14 in real time, and the second current sensor 11 detects the current of the zero wire 15 in real time. Signals detected by the first current sensor 10 and the second current sensor 11 are sent to the first A/D conversion circuit and the second A/D conversion circuit, and the first A/D conversion circuit and the second A/D conversion circuit convert analog signals into digital signals and send the digital signals to the MCU.
MCU compares the current difference value of first current sensor 10, second current sensor 11 to the module through the electric current, when the difference value is big to a certain extent, shows there is the emergence of electric leakage, and MCU passes through switching circuit control electromagnetic relay 12 disconnection, realizes that the circuit must cut off the power supply.
Meanwhile, the MCU differentiates the current values of the first current sensor 10 and the second current sensor 11 in a time domain through the current comparison module, so that the change of the current is determined, when the change is overlarge and is in a fluctuation state for a long time, the time is usually several seconds, which indicates that electrical equipment is damaged or has poor contact in a place or a person gets an electric shock but does not leak electricity, at the moment, the MCU controls the electromagnetic relay 12 to be disconnected through the switch circuit, and the circuit is powered off. The safety of the power supply circuit, the electrical appliance and the human body is protected.
Thus, by arranging the device, the magnitude of leakage current can be detected, the numerical value of leakage protection can be adjusted according to needs, and the use safety and practicability are realized; the device can detect the change rate of the current, judge the safety of the power supply circuit according to the change rate and intelligently cut off the power supply.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a novel electric distribution box, its characterized in that: be provided with master switch (7) in block terminal (1), master switch (7) include electromagnetic relay (12), and mains supply links to each other with the input of electromagnetic relay (12), there is distribution terminal box (5) output of electromagnetic relay (12) through cable connection, there is controller (8) control end of electromagnetic relay (12) through cable connection, controller (8) are connected with a plurality of current sensor, current sensor sets up on mains supply's cable, controller (8) are according to the switching of current sensor's numerical control electromagnetic relay (12).
2. A novel electrical distribution box according to claim 1, wherein: the controller (8) comprises an MCU, wherein a current comparison module is arranged in the MCU and used for calculating a current difference value and a change rate of the current sensor.
3. A novel electrical distribution box according to claim 2, wherein: the current sensor comprises a first current sensor (10) and a second current sensor (11), the cable of the mains supply comprises a live wire (14) and a zero wire (15), the first current sensor (10) is arranged on the live wire (14), and the second current sensor (11) is arranged on the zero wire (15).
4. A novel electrical distribution box according to claim 3, wherein: the MCU is connected with a switch circuit, the switch circuit is electrically connected with the electromagnetic relay (12), the current comparison module is used for comparing current difference values detected by the first current sensor (10) and the second current sensor (11), and the MCU is communicated with the switch circuit to control the electromagnetic relay (12) to be switched on and off when the difference values reach a certain numerical value.
5. The novel electrical distribution box of claim 4, wherein: the power supply device comprises a power supply circuit (9), wherein the input end of the power supply circuit (9) is connected with a live wire (14) and a zero wire (15) of a mains supply through cables, and the connection part of the power supply circuit and the live wire (14) and the zero wire (15) is positioned at the front end of an electromagnetic relay (12); the output end of the power supply circuit (9) is electrically connected with the controller (8).
6. A novel electrical distribution box according to claim 5, wherein: the electric energy input end of the switch circuit is electrically connected with the power circuit (9), the electric energy output end of the switch circuit is electrically connected with the electromagnetic relay (12), and the control end of the switch circuit is connected with the MCU through signals.
7. A novel electrical distribution box according to claim 6, wherein: the MCU is connected with a first A/D conversion circuit and a second A/D conversion circuit, the analog input end of the first A/D conversion circuit is in signal connection with the first current sensor (10), the digital signal output end of the first A/D conversion circuit is in signal connection with the MCU, the analog input end of the second A/D conversion circuit is in signal connection with the second current sensor (11), and the digital signal output end of the second A/D conversion circuit is in signal connection with the MCU.
8. A novel electrical distribution box according to claim 7, wherein: fuses (13) are arranged on the live wire (14) and the zero wire (15); and a power distribution switch (6) is arranged on the power distribution junction box (5).
9. A novel electrical distribution box according to claim 8, wherein: the box wall of the distribution box (1) is provided with double-layer protective layers (4), and an insulating layer is arranged between the double-layer protective layers (4); the distribution box is characterized in that the distribution box (1) is connected with a box door (2), and a safety lock (3) is arranged between the distribution box (1) and the box door (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022001834.8U CN213367172U (en) | 2020-09-14 | 2020-09-14 | Novel electrical distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022001834.8U CN213367172U (en) | 2020-09-14 | 2020-09-14 | Novel electrical distribution box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213367172U true CN213367172U (en) | 2021-06-04 |
Family
ID=76152444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022001834.8U Active CN213367172U (en) | 2020-09-14 | 2020-09-14 | Novel electrical distribution box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213367172U (en) |
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2020
- 2020-09-14 CN CN202022001834.8U patent/CN213367172U/en active Active
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