CN214153571U - Low-voltage draw-out type complete switch cabinet - Google Patents
Low-voltage draw-out type complete switch cabinet Download PDFInfo
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- CN214153571U CN214153571U CN202120116340.6U CN202120116340U CN214153571U CN 214153571 U CN214153571 U CN 214153571U CN 202120116340 U CN202120116340 U CN 202120116340U CN 214153571 U CN214153571 U CN 214153571U
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Abstract
The utility model discloses a low pressure pull-out type complete set cubical switchboard, including the cubical switchboard cabinet body, be equipped with mutual-inductor unit, lightning protection unit and temperature control unit in the cubical switchboard cabinet body, the mutual-inductor unit includes voltage transformer and current transformer, voltage transformer and current transformer all arrange the cubical switchboard cabinet internally, voltage transformer includes the voltmeter, the ampere meter that current transformer includes, the lightning protection unit includes ceramic gas discharge tube, the temperature control unit includes main control chip, sensor module and fan drive module, main control chip connects sensor module and fan drive module respectively; the utility model discloses in, reduce voltage and electric current through voltage transformer and current transformer, for equipment and instrument power supply, made things convenient for the instrument to detect, can protect the valuable equipment in the circuit when the circuit breaks down, reduce the damage of thunder electricity to the cubical switchboard through the lightning protection unit to through the internal temperature of temperature control unit control cubical switchboard cabinet, ensure cubical switchboard safe in utilization.
Description
Technical Field
The utility model relates to a low pressure pull-out type complete set cubical switchboard field of making specifically is a low pressure pull-out type complete set cubical switchboard.
Background
The low-voltage switch cabinet is suitable for industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and the like, and is used for power transmission, power distribution and electric energy conversion, the draw-out type is composed of a fixed cabinet body and a movable device part provided with main electric elements such as switches and the like, the movable part is light and convenient to move and move, the positioning after moving is reliable, drawers of the same type and specification can be reliably exchanged, the processing method of the part of the draw-out type cabinet body is basically similar to that of the fixed type cabinet body, but the precision of the cabinet body needs to be improved due to the exchange requirement, the related parts of the structure need to have enough adjustment quantity, the movable device part needs to be capable of moving and reliably bearing the main elements, so that the low-voltage switch cabinet needs to have higher mechanical strength and higher precision, and the related parts also need to; in order to reduce the safety risk of the low-voltage switch cabinet, the voltage and the current in the low-voltage switch cabinet need to be detected when the low-voltage switch cabinet is used.
Therefore, the inventor provides a low-voltage draw-out type complete switch cabinet by combining various factors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low pressure pull-out type complete set cubical switchboard to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a low-voltage draw-out type complete switch cabinet comprises a switch cabinet body, wherein a mutual inductor unit, a lightning protection unit and a temperature control unit are arranged in the switch cabinet body, the mutual inductor unit comprises a voltage mutual inductor and a current mutual inductor, and the voltage mutual inductor and the current mutual inductor are arranged in the switch cabinet body; the utility model discloses in, reduce voltage and electric current through voltage transformer and current transformer, for equipment and instrument power supply, also made things convenient for the instrument to detect simultaneously, can protect the valuable equipment in the circuit when the circuit breaks down, reduce the damage of thunder electricity to the cubical switchboard through the lightning protection unit to through the internal temperature of temperature control unit control cubical switchboard cabinet, ensure cubical switchboard safe in utilization.
As a further aspect of the present invention: the voltage transformer comprises a voltmeter V1, the current transformer comprises ammeters A1 to A3 which are sequentially numbered, the lightning protection unit comprises a ceramic gas discharge tube G1, the voltmeter V1 is connected with a cable through a voltage mutual inductance circuit, the ammeters A1 to A3 are connected with the cable through a current mutual inductance circuit, and the ceramic gas discharge tube G1 is connected with the cable through a lightning protection circuit.
As a further aspect of the present invention: the voltage mutual inductance circuit comprises a transformer T1, a contactor K1, a contactor K2 and fuses F1 to F4 which are numbered in sequence, wherein one end of the contactor K1 is connected with a zero line; the other end of the contactor K1 is connected with one end of a fuse F1, and one end of the contactor K2 is connected with a live wire; the other end of the contactor K2 is connected with one end of a fuse F3; the other ends of the fuse F1 and the fuse F3 are respectively connected with the primary side of the transformer T1; one end of the fuse F2 is connected with pin 2 of the voltmeter V1; one end of the fuse F4 is connected with pin 1 of the voltmeter V1; the other end of the fuse F2 is connected with the secondary side of the transformer T1; the other end of the fuse F4 is connected to the secondary side of the transformer T1 and to ground.
As a further aspect of the present invention: the current mutual inductance circuit comprises a transformer T2, a transformer T3 and a transformer T4, wherein primary sides of the transformer T2, the transformer T3 and the transformer T4 are connected with a live wire; the ammeter A1 is connected with the secondary side of the transformer T2; the ammeter A2 is connected with the secondary side of the transformer T3; the ammeter A1 is connected with the secondary side of the transformer T2; the pin 2 of ammeter A1 is connected to pin 2 of ammeter A2 and pin 3 of ammeter A3 and to ground.
As a further aspect of the present invention: the lightning protection circuit comprises piezoresistors R1-R6 which are numbered sequentially and fuses F5-F10 which are numbered sequentially, wherein one end of the resistor R1 is connected with one end of the resistor R2 and connected with a live wire L1; the other end of the resistor R1 is connected with one end of a fuse F5; the other end of the resistor R2 is connected with one end of a fuse F6; one end of the resistor R3 is connected with one end of the resistor R4 and is connected with a live wire L2; the other end of the resistor R3 is connected with one end of a fuse F7; the other end of the resistor R4 is connected with one end of a fuse F8; one end of the resistor R5 is connected with one end of the resistor R6 and is connected with a live wire L3; the other end of the resistor R5 is connected with one end of a fuse F9; the other end of the resistor R6 is connected with one end of a fuse F10; the other end of the sequentially numbered fuse F5 through fuse F10 terminates in a neutral line.
As a further aspect of the present invention: the temperature control unit comprises a main control chip, a sensor module and a fan driving module, wherein the sensor module comprises a temperature and humidity sensor U2, the temperature and humidity sensor U2 is connected with the main control chip U1 through a sensor circuit, the sensor circuit comprises a capacitor C1, and one end of the capacitor C1 is connected with a VCC pin of U2 and is connected with a power supply in parallel; the other end of the capacitor C1 is connected with the GND pin of the U2 and is grounded; the DQ pin of U2 is connected to the PA4 pin of U1.
As a further aspect of the present invention: the fan driving module comprises a fan B1, the fan B1 is connected with a main control chip U1 through a driving circuit, the driving circuit comprises a driving chip U3, a resistor R7, a capacitor C2 and a capacitor C3, and one end of the resistor R7 is connected with an LSS pin of the U3; the other end of the resistor R7 is grounded; one end of the capacitor C2 is connected with one end of the capacitor C3 and the VBB pin of the U3 and is connected with a power supply in parallel; the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded; one end of the fan B1 is connected with the OUT1 pin of U3; the other end of the fan B1 is connected with an OUT2 pin of U3; the IN1 pin of U3 is connected with the PA6 pin of U1; the IN2 pin of U3 is connected with the PA5 pin of U1; the VREF pin of U3 is connected with a power supply; the GND pin of U1 is connected to ground.
Compared with the prior art, the utility model discloses the beneficial effect of following several aspects has:
1. the utility model provides a low pressure pull-out type complete set cubical switchboard, the structure sets up ingeniously and arranges rationally, in the utility model, through voltage transformer and current transformer reduction voltage and electric current, for equipment and instrument power supply, also made things convenient for the instrument to detect simultaneously, can protect the valuable equipment in the circuit when the circuit breaks down, reduce the damage of thunder to the cubical switchboard through the lightning protection unit, and through the inside temperature of temperature control unit control cubical switchboard cabinet body, ensure the safe in utilization of cubical switchboard;
2. the utility model further designs a lightning protection unit, which can simultaneously protect the three power supplies through a lightning protection circuit, and can be separated from the circuit if the short circuit of the piezoresistor fails in the using process, thereby avoiding fire hazard and ensuring the safety of the switch cabinet;
3. the utility model discloses further designed temperature control unit, through the internal humiture of temperature and humidity sensor detection switch cabinet, if the high temperature then starts the fan for the air flow speed in the switch cabinet in time cools down, protective apparatus safety to the equipment in the switch cabinet.
Drawings
Fig. 1 is a system structure block diagram of a low-voltage draw-out type complete switch cabinet.
Fig. 2 is a circuit diagram of a voltage transformer in a low-voltage draw-out complete switch cabinet.
Fig. 3 is a circuit diagram of a current transformer in a low-voltage draw-out type complete switch cabinet.
Fig. 4 is a circuit diagram of a lightning protection unit in a low-voltage draw-out type complete switch cabinet.
Fig. 5 is a circuit diagram of a temperature control unit in a low-voltage draw-out complete switch cabinet.
In the figure: 1. a switch cabinet body; 2. a transformer unit; 21. a voltage transformer; 22. a current transformer; 3. a lightning protection unit; 4. a temperature control unit; 41. a main control chip; 42. a sensor module; 43. and a fan driving module.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-5, a low-voltage draw-out complete set of switch cabinet comprises a switch cabinet body 1, wherein a transformer unit 2, a lightning protection unit 3 and a temperature control unit 4 are arranged in the switch cabinet body 1, the transformer unit 2 comprises a voltage transformer 21 and a current transformer 22, and the voltage transformer 21 and the current transformer 22 are both arranged in the switch cabinet body 1;
the voltage transformer 21 comprises a voltmeter V1, the current transformer 22 comprises ammeters A1 to A3 which are numbered sequentially, the lightning protection unit 3 comprises a ceramic gas discharge tube G1, the voltmeter V1 is connected with cables through a voltage mutual inductance circuit, the ammeters A1 to A3 are connected with the cables through a current mutual inductance circuit, and the ceramic gas discharge tube G1 is connected with the cables through a lightning protection circuit;
the voltage mutual inductance circuit comprises a transformer T1, a contactor K1, a contactor K2 and fuses F1 to F4 which are numbered in sequence, wherein one end of the contactor K1 is connected with a zero line; the other end of the contactor K1 is connected with one end of a fuse F1, and one end of the contactor K2 is connected with a live wire; the other end of the contactor K2 is connected with one end of a fuse F3; the other ends of the fuse F1 and the fuse F3 are respectively connected with the primary side of the transformer T1; one end of the fuse F2 is connected with pin 2 of the voltmeter V1; one end of the fuse F4 is connected with pin 1 of the voltmeter V1; the other end of the fuse F2 is connected with the secondary side of the transformer T1; the other end of the fuse F4 is connected with the secondary side of the transformer T1 and grounded;
the current mutual inductance circuit comprises a transformer T2, a transformer T3 and a transformer T4, wherein primary sides of the transformer T2, the transformer T3 and the transformer T4 are connected with a live wire; the ammeter A1 is connected with the secondary side of the transformer T2; the ammeter A2 is connected with the secondary side of the transformer T3; the ammeter A1 is connected with the secondary side of the transformer T2; a pin 2 of the ammeter A1 is connected with a pin 2 of the ammeter A2 and a pin 3 of the ammeter A3 and grounded;
the lightning protection circuit comprises piezoresistors R1-R6 which are numbered sequentially and fuses F5-F10 which are numbered sequentially, wherein one end of the resistor R1 is connected with one end of the resistor R2 and connected with a live wire L1; the other end of the resistor R1 is connected with one end of a fuse F5; the other end of the resistor R2 is connected with one end of a fuse F6; one end of the resistor R3 is connected with one end of the resistor R4 and is connected with a live wire L2; the other end of the resistor R3 is connected with one end of a fuse F7; the other end of the resistor R4 is connected with one end of a fuse F8; one end of the resistor R5 is connected with one end of the resistor R6 and is connected with a live wire L3; the other end of the resistor R5 is connected with one end of a fuse F9; the other end of the resistor R6 is connected with one end of a fuse F10; the fuse F5 numbered in sequence is connected with the other end of the fuse F10 by a zero line;
the temperature control unit 4 comprises a main control chip 41, a sensor module 42 and a fan driving module 43, wherein the sensor module 42 comprises a temperature and humidity sensor U2, the temperature and humidity sensor U2 is connected with the main control chip U1 through a sensor circuit, the sensor circuit comprises a capacitor C1, and one end of the capacitor C1 is connected with a VCC pin of the U2 and is connected with a power supply in parallel; the other end of the capacitor C1 is connected with the GND pin of the U2 and is grounded; a DQ pin of U2 is connected with a PA4 pin of U1;
the fan driving module 43 comprises a fan B1, the fan B1 is connected with a main control chip U1 through a driving circuit, the driving circuit comprises a driving chip U3, a resistor R7, a capacitor C2 and a capacitor C3, and one end of the resistor R7 is connected with an LSS pin of the U3; the other end of the resistor R7 is grounded; one end of the capacitor C2 is connected with one end of the capacitor C3 and the VBB pin of the U3 and is connected with a power supply in parallel; the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded; one end of the fan B1 is connected with the OUT1 pin of U3; the other end of the fan B1 is connected with an OUT2 pin of U3; the IN1 pin of U3 is connected with the PA6 pin of U1; the IN2 pin of U3 is connected with the PA5 pin of U1; the VREF pin of U3 is connected with a power supply; the GND pin of U1 is connected to ground.
The utility model discloses a theory of operation is: in the utility model, the voltage and the current are reduced by the voltage transformer 21 and the current transformer 22, the power is supplied to the equipment and the instrument, the instrument detection is convenient, and the valuable equipment in the line can be protected when the line breaks down; the lightning protection circuit can simultaneously protect the three power supplies, and in the using process, if the piezoresistor fails due to short circuit, the piezoresistor can be separated from the circuit, so that fire disasters can not be caused, and the safety of the switch cabinet is ensured; the temperature and humidity in the switch cabinet body 1 are detected through the temperature and humidity sensor, if the temperature is too high, the fan is started, the air flowing speed in the switch cabinet is accelerated, the temperature of equipment in the switch cabinet is timely reduced, and the safety of the equipment is protected.
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 by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. A low-voltage draw-out type complete switch cabinet comprises a switch cabinet body (1), and is characterized in that a transformer unit (2), a lightning protection unit (3) and a temperature control unit (4) are arranged in the switch cabinet body (1), the transformer unit (2) comprises a voltage transformer (21) and a current transformer (22), and the voltage transformer (21) and the current transformer (22) are arranged in the switch cabinet body (1);
the voltage transformer (21) comprises a voltmeter V1, the current transformer (22) comprises ammeters A1 to A3 which are numbered sequentially, the lightning protection unit (3) comprises a ceramic gas discharge tube G1, the voltmeter V1 is connected with cables through a voltage mutual inductance circuit, the ammeters A1 to A3 are connected with cables through a current mutual inductance circuit, and the ceramic gas discharge tube G1 is connected with the cables through a lightning protection circuit;
the lightning protection circuit comprises piezoresistors R1-R6 which are numbered sequentially and fuses F5-F10 which are numbered sequentially, wherein one end of the resistor R1 is connected with one end of the resistor R2 and connected with a live wire L1; the other end of the resistor R1 is connected with one end of a fuse F5; the other end of the resistor R2 is connected with one end of a fuse F6; one end of the resistor R3 is connected with one end of the resistor R4 and is connected with a live wire L2; the other end of the resistor R3 is connected with one end of a fuse F7; the other end of the resistor R4 is connected with one end of a fuse F8; one end of the resistor R5 is connected with one end of the resistor R6 and is connected with a live wire L3; the other end of the resistor R5 is connected with one end of a fuse F9; the other end of the resistor R6 is connected with one end of a fuse F10; the other end of the sequentially numbered fuse F5 through fuse F10 terminates in a neutral line.
2. The low-voltage draw-out switchgear assembly according to claim 1, wherein the voltage transformer circuit comprises a transformer T1, a contactor K1, a contactor K2 and sequentially numbered fuses F1 to F4, one end of the contactor K1 is connected with a zero line; the other end of the contactor K1 is connected with one end of a fuse F1, and one end of the contactor K2 is connected with a live wire; the other end of the contactor K2 is connected with one end of a fuse F3; the other ends of the fuse F1 and the fuse F3 are respectively connected with the primary side of the transformer T1; one end of the fuse F2 is connected with pin 2 of the voltmeter V1; one end of the fuse F4 is connected with pin 1 of the voltmeter V1; the other end of the fuse F2 is connected with the secondary side of the transformer T1; the other end of the fuse F4 is connected to the secondary side of the transformer T1 and to ground.
3. The low voltage draw-out switchgear assembly as claimed in claim 1, wherein the current transformer circuit comprises transformer T2, transformer T3 and transformer T4, the primary side of transformer T2, transformer T3 and transformer T4 being connected to live; the ammeter A1 is connected with the secondary side of the transformer T2; the ammeter A2 is connected with the secondary side of the transformer T3; the ammeter A1 is connected with the secondary side of the transformer T2; the pin 2 of ammeter A1 is connected to pin 2 of ammeter A2 and pin 3 of ammeter A3 and to ground.
4. The low-voltage draw-out type complete switch cabinet according to any one of claims 1 to 3, wherein the temperature control unit (4) comprises a main control chip (41), a sensor module (42) and a fan driving module (43), the sensor module (42) comprises a temperature and humidity sensor U2, the temperature and humidity sensor U2 is connected with the main control chip U1 through a sensor circuit, the sensor circuit comprises a capacitor C1, and one end of the capacitor C1 is connected with a VCC pin of U2 and is connected with a power supply in parallel; the other end of the capacitor C1 is connected with the GND pin of the U2 and is grounded; the DQ pin of U2 is connected to the PA4 pin of U1.
5. The low-voltage draw-out switchgear assembly according to claim 4, wherein the fan driving module (43) comprises a fan B1, the fan B1 is connected to the main control chip U1 through a driving circuit, the driving circuit comprises a driving chip U3, a resistor R7, a capacitor C2 and a capacitor C3, one end of the resistor R7 is connected to the LSS pin of the U3; the other end of the resistor R7 is grounded; one end of the capacitor C2 is connected with one end of the capacitor C3 and the VBB pin of the U3 and is connected with a power supply in parallel; the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded; one end of the fan B1 is connected with the OUT1 pin of U3; the other end of the fan B1 is connected with an OUT2 pin of U3; the IN1 pin of U3 is connected with the PA6 pin of U1; the IN2 pin of U3 is connected with the PA5 pin of U1; the VREF pin of U3 is connected with a power supply; the GND pin of U1 is connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116340.6U CN214153571U (en) | 2021-01-15 | 2021-01-15 | Low-voltage draw-out type complete switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116340.6U CN214153571U (en) | 2021-01-15 | 2021-01-15 | Low-voltage draw-out type complete switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214153571U true CN214153571U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120116340.6U Active CN214153571U (en) | 2021-01-15 | 2021-01-15 | Low-voltage draw-out type complete switch cabinet |
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|---|---|
| CN (1) | CN214153571U (en) |
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2021
- 2021-01-15 CN CN202120116340.6U patent/CN214153571U/en active Active
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Effective date of registration: 20240123 Address after: 014000 In the courtyard of No. 38 Campus Road, Rare Earth High tech Zone, Baotou City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Yuli Electric Co.,Ltd. Country or region after: China Address before: 325000 Liu Shi Zhen Liu Nan Cun, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: Zheng Yuanzhuang Country or region before: China Effective date of registration: 20240123 Address after: 325000 Liu Shi Zhen Liu Nan Cun, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zheng Yuanzhuang Country or region after: China Address before: 062550 Renqiu economic and Technological Development Zone, Cangzhou City, Hebei Province, east of planned Taishan Road Patentee before: Hebei Tiancheng Electric Power Technology Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |