CN216251786U - Automatic switching distribution box for double-circuit power supply - Google Patents

Automatic switching distribution box for double-circuit power supply Download PDF

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Publication number
CN216251786U
CN216251786U CN202122950914.2U CN202122950914U CN216251786U CN 216251786 U CN216251786 U CN 216251786U CN 202122950914 U CN202122950914 U CN 202122950914U CN 216251786 U CN216251786 U CN 216251786U
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detection module
main
circuit
standby
input end
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CN202122950914.2U
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刘昌建
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Sichuan Chengji Sitong Technology Co ltd
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Sichuan Chengji Sitong Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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Abstract

The utility model discloses a double-circuit power supply automatic switching distribution box which comprises a main circuit, a standby circuit, an ammeter and a remote detection module, wherein the output end of a main circuit breaker is connected with the input end of a main voltage detection module, the output end of the main voltage detection module is connected with the input end of a main alternating current contactor, and the 485 signal output end of the main voltage detection module is connected with the input end of the remote detection module; the 485 signal output end of the standby voltage detection module is connected with the input end of the remote detection module; the main alternating current contactor is connected with the standby alternating current contactor; and the 485 signal output end of the electric meter is connected with the input end of the remote detection module. The utility model can detect the load current in the main circuit, the standby circuit and the circuit at the rear end of the ammeter, thereby ensuring the reliability of the circuit operation; when any one way of power is cut off, the circuit can be automatically switched, the method is convenient and fast, and the method is particularly suitable for a detection station of a railway infrared hot shaft temperature detection system.

Description

Automatic switching distribution box for double-circuit power supply
Technical Field
The utility model belongs to the technical field of distribution box protection, and particularly relates to a double-circuit power supply automatic switching distribution box.
Background
The safety of the power utilization circuit is the basis for ensuring the safety and normal operation of the power utilization equipment, and in daily life, the phenomenon that the power utilization circuit generates large current instantly due to the influence of thunder and lightning often occurs, so that the overcurrent phenomenon is generated on the power utilization equipment, and the safe and normal operation of the power utilization equipment is seriously threatened.
In order to improve the safety problem of an electric circuit, at present, a two-way power supply distribution box is mostly adopted, but when lightning current impacts, one circuit is possibly disconnected, the circuit is switched to a standby circuit as soon as possible, the existing switching mode is mechanical switching, a mechanical switch is arranged between a main circuit and the standby circuit, when the main circuit trips, the mechanical switch is used for switching on the standby circuit by adopting a lever principle, so that the standby circuit is electrified for use, the whole circuit can still be used due to the existence of the standby circuit, but the circuit is not clear to have a problem, real-time monitoring cannot be realized, and if the circuit is continuously used, when the next lightning current impacts, the residual voltage value is higher, and the damage failure rate of rear-end equipment is higher.
Therefore, how to solve the above-mentioned drawbacks of the prior art becomes the direction of efforts of those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-circuit power supply automatic switching distribution box, which mainly solves the problem of detecting load current in the existing double-circuit power supply distribution box and can completely solve the defects in the prior art.
The purpose of the utility model is realized by the following technical scheme: a double-circuit power supply automatic switching distribution box comprises a main circuit, a standby circuit and an ammeter, wherein the main circuit comprises a main circuit breaker, a main voltage detection module and a main alternating current contactor, the standby circuit comprises a standby circuit breaker, a standby voltage monitoring module and a standby alternating current contactor, and further comprises a remote detection module, the output end of the main circuit breaker is connected with the input end of the main voltage detection module, the output end of the main voltage detection module is connected with the input end of the main alternating current contactor, the output end of the main alternating current contactor is connected with the input end of the ammeter, and the 485 signal output end of the main voltage detection module is connected with the input end of the remote detection module; the output end of the standby circuit breaker is connected with the input end of the standby voltage detection module, the output end of the standby voltage detection module is connected with the input end of the standby alternating current contactor, the output end of the standby alternating current contactor is connected with the input end of the ammeter, and the 485 signal output end of the standby voltage detection module is connected with the input end of the remote detection module; the main alternating current contactor is connected with the standby alternating current contactor; and the 485 signal output end of the electric meter is connected with the input end of the remote detection module.
As one of the preferable modes, a voltage acquisition unit, a control chip and a network transmission module are arranged in the remote detection module, the voltage acquisition unit is connected with the control chip, and the control chip is connected with the network transmission module.
As one of the preferable modes, the voltage output end of the electric meter is connected with the input end of the rear end voltage detection module, and the 485 signal output end of the rear end voltage detection module is connected with the input end of the remote detection module.
As one preferable mode, the voltage output end of the rear-end voltage detection module is connected with the input end of the air switch.
As one of the preferable modes, 485 signal output ends of the main voltage detection module, the standby voltage detection module, the ammeter and the rear end voltage detection module are respectively connected with a signal input end of the voltage acquisition unit.
In a preferred embodiment, the normally closed circuit in the main circuit has both ends connected to the L line of the backup circuit and the electromagnetic coil, respectively.
As one of the preferable modes, two power supplies are arranged on the remote detection module, and the two power supplies are respectively and correspondingly provided with a first prompt lamp and a second prompt lamp.
Compared with the prior art, the utility model has the beneficial effects that: the automatic switching distribution box of the double-circuit power supply can detect the load current in the main circuit, the standby circuit and the circuit at the rear end of the electric meter, and timely transmit the detected signals to the server; when any one circuit is powered off, the circuit can be automatically switched, the method is convenient and fast, and the method is particularly suitable for detection stations of railway infrared hot shaft temperature detection systems and has very obvious effect.
Drawings
Fig. 1 is a block diagram of the structural connection of the dual power supply automatic switching distribution box of the utility model.
Fig. 2 is a schematic diagram of the internal principle of the dual power supply automatic switching distribution box of the utility model.
Fig. 3 is a schematic circuit connection diagram of the main circuit and the standby circuit in the dual power supply automatic switching distribution box of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2, and 3, example 1:
a double-circuit power supply automatic switching distribution box comprises a main circuit 101, a standby circuit 102, a remote detection module 7, an electric meter 8 and a rear end voltage detection module 9.
The main circuit comprises a main circuit breaker 1, a main voltage detection module 2 and a main alternating current contactor 3, wherein in the main circuit 101, the output end of the main circuit breaker 1 is connected with the input end of the main voltage detection module 2, the output end of the main voltage detection module 2 is connected with the input end of the main alternating current contactor 3, and the output end of the main alternating current contactor 3 is connected with the input end of an electric meter 8. The stand-by circuit includes reserve circuit breaker 4, reserve voltage detection module 5 and reserve ac contactor 6, in stand-by circuit 102, the output of reserve circuit breaker 4 links to each other with reserve voltage detection module 5's input, and reserve voltage detection module 5's output links to each other with reserve ac contactor 6's input, and reserve ac contactor 6's output links to each other with ammeter 8 input.
The main AC contactor is connected with the standby AC contactor, the standby circuit is used as a standby and is in an off state for a long time, and when the main circuit is broken, the standby circuit is switched on. The main alternating current contactor controls the on-off of the standby alternating current contactor, when the main circuit is electrified, the A3-A4 coil in the whole standby alternating current contactor is in an off state, the whole standby circuit is powered off, and when the main circuit is powered off, the A3-A4 coil in the whole standby alternating current contactor is connected with the whole circuit, so that the standby circuit plays a role in electrifying. As shown in figure 3, the main circuit and the standby circuit are used simultaneously, when the main circuit is struck by lightning or damaged by other conditions, the main circuit can be switched to the standby circuit as soon as possible, and the stability of the circuit behind the electric meter is ensured. In the two circuits, an L circuit and an N circuit of a main circuit are directly output to an ammeter, and two ends of a normally closed circuit in the main circuit are respectively connected with the L circuit and an electromagnetic coil of a standby circuit; when the main circuit is accidentally damaged, the normally closed circuit is disconnected, the circuit is connected through the standby circuit, and the standby circuit plays a surge protection role.
And the 485 signal output end of the main voltage detection module is connected with the input end of the remote detection module 7. And the 485 signal output end of the electric meter is connected with the input end of the remote detection module. And the 485 signal output end of the standby voltage detection module is connected with the input end of the remote detection module.
The remote detection module 7 is internally provided with a voltage acquisition unit 71, a control chip 72 and a network transmission module 73. Specifically, the 485 signal output end of the main voltage detection module 2 is connected with the signal input end of the voltage acquisition unit 71; the 485 signal output end of the standby voltage detection module 5 is connected with the signal input end of the voltage acquisition unit 71; and a 485 signal output end of the electric meter 8 is connected with a signal input end of the voltage acquisition unit 71. The rear end voltage detection module 9 is arranged on an output circuit of the ammeter 8, and a 485 signal output end of the rear end voltage detection module 9 is connected with the voltage acquisition unit 71. An air switch 10 is provided on an output circuit of the back-end voltage detection module 9.
In the remote detection module 7, the voltage acquisition unit 71 is connected with the control chip 72, and the control chip 72 is connected with the network transmission module 73. The voltage acquisition unit 71 acquires 485 signals input from the main voltage detection module 2, the standby voltage detection module 5 and the rear-end voltage detection module 9, and transmits the signals to the control chip 72, the control chip analyzes and converts the signals and transmits the signals through a network in the network transmission module, the network can be a wireless network or a wired network and transmits the signals to a remote server, and the server realizes the monitoring effect on the circuit in the power supply double-path power supply automatic switching distribution box.
The working principle of the remote detection module is as follows: the remote detection module is used for detecting load current and power supply voltage of lines in the main circuit and the standby circuit, and particularly, the remote detection module is used for detecting the use times of the main circuit and the use times of the standby circuit; thereby monitoring the on-off state of the main circuit and the standby circuit; meanwhile, the remote detection module detects the load current passing through the leakage current sensor in the main circuit and the power supply voltage in the line through the main voltage detection module in the main circuit, the same remote detection module detects the load current passing through the leakage current sensor in the standby circuit and the power supply voltage in the line through the standby voltage detection module, and the rear end voltage detection module at the rear end of the electric meter detects the load current passing through the leakage current sensor in the rear end of the electric meter and the power supply voltage in the line. The remote detection module collects the acquired current and voltage data information and the information of the use times, and transmits the acquired current and voltage data information and the acquired information of the use times to the control chip for conversion and storage after the acquired current and voltage data information and the information of the use times are collected by the voltage collection unit. The remote detection module is provided with an RS485 interface and can be used for establishing an equipment network, the remote detection module sends signals to a remote server end in a wired or wireless mode through the network, and the server end collects information in the whole railway infrared hot shaft temperature detection system.
In addition, the remote detection module is provided with two paths of power supplies, a first prompting lamp (not shown) and a second prompting lamp (not shown) are respectively arranged on the two paths of power supplies, when the main power supply is powered off, the main power supply is automatically switched to a standby power supply mode, the second prompting lamp is turned on, and when the main power supply is restored to supply power, the standby power supply is automatically switched to the main power supply mode. The remote detection module can complete work smoothly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a dual power supply automatic switch-over block terminal, includes main circuit, stand-by circuit and ammeter, the main circuit includes main circuit breaker, main voltage detection module and main ac contactor, the stand-by circuit includes stand-by circuit breaker, stand-by voltage monitoring module and stand-by ac contactor, its characterized in that: the output end of the main circuit breaker is connected with the input end of the main voltage detection module, the output end of the main voltage detection module is connected with the input end of the main alternating current contactor, the output end of the main alternating current contactor is connected with the input end of the ammeter, and the 485 signal output end of the main voltage detection module is connected with the input end of the remote detection module; the output end of the standby circuit breaker is connected with the input end of the standby voltage detection module, the output end of the standby voltage detection module is connected with the input end of the standby alternating current contactor, the output end of the standby alternating current contactor is connected with the input end of the ammeter, and the 485 signal output end of the standby voltage detection module is connected with the input end of the remote detection module; the main alternating current contactor is connected with the standby alternating current contactor; and the 485 signal output end of the electric meter is connected with the input end of the remote detection module.
2. The dual power supply auto-switching power distribution box of claim 1, wherein: the remote detection module is internally provided with a voltage acquisition unit, a control chip and a network transmission module, the voltage acquisition unit is connected with the control chip, and the control chip is connected with the network transmission module.
3. The dual power supply auto-switching electrical distribution box of claim 2, wherein: the voltage output end of the ammeter is connected with the input end of the rear end voltage detection module, and the 485 signal output end of the rear end voltage detection module is connected with the input end of the remote detection module.
4. The dual power supply auto-switching electrical box of claim 3, wherein: and the voltage output end of the rear-end voltage detection module is connected with the input end of the air switch.
5. The dual power supply auto-switching distribution box of claim 4, wherein: and 485 signal output ends of the main voltage detection module, the standby voltage detection module, the ammeter and the rear end voltage detection module are respectively connected with a signal input end of the voltage acquisition unit.
6. The dual power supply auto-switching power distribution box of claim 1, wherein: two ends of a normally closed circuit in the main circuit are respectively connected with an L line and an electromagnetic coil of the standby circuit.
7. The dual power supply auto-switching power distribution box of claim 1, wherein: the remote detection module is provided with two power supplies which are respectively and correspondingly provided with a first prompt lamp and a second prompt lamp.
CN202122950914.2U 2021-11-29 2021-11-29 Automatic switching distribution box for double-circuit power supply Active CN216251786U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122950914.2U CN216251786U (en) 2021-11-29 2021-11-29 Automatic switching distribution box for double-circuit power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122950914.2U CN216251786U (en) 2021-11-29 2021-11-29 Automatic switching distribution box for double-circuit power supply

Publications (1)

Publication Number Publication Date
CN216251786U true CN216251786U (en) 2022-04-08

Family

ID=80958930

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122950914.2U Active CN216251786U (en) 2021-11-29 2021-11-29 Automatic switching distribution box for double-circuit power supply

Country Status (1)

Country Link
CN (1) CN216251786U (en)

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