CN200941545Y - A fire leakage protector - Google Patents

Abstract

A fire-proof leakage protector comprises a shell, and is characterized in that an input end and an output end, a main circuit board, a zero sequence transformer, a sampling transformer, a current transformer, a power transformer, a communication device, a lightning protection device and a circuit breaker are arranged in the shell; the communication device can be communicated with a computer; the zero sequence transformer, the current transformer and the sampling transformer are connected with the main circuit board; the lightning protection device is connected with the circuit breaker, and the circuit breaker is connected with the main circuit board; the main circuit board is also connected with a sound-light voice alarm device. The utility model discloses collect electric leakage, overload, short circuit, excessive pressure, under-voltage, lack looks and lightning protection, adopt the microcomputer control technique, realize electric leakage, overload, short circuit, excessive pressure, under-voltage , the online detection of lightning protection is intelligent, still can with the computer communication, form the networking, realize remote monitoring to 1-250 intelligent switches simultaneously through a computer, job stabilization is reliable, can effectively prevent electrical accident and electric fire.

Description

A fire leakage protector

【Technical field】

The utility model relates to a fireproof leakage protector.

【Background technique】

Among the frequent fire accidents, more than 70% are caused by unsafe electricity use, and fires caused by power failures have become the number one killer of human safety hazards. According to the investigation and confirmation of the fire department, most of the fire accidents caused by electricity are equipped with protective devices such as air switches and leakage switches. Why do fire accidents still occur frequently? The main reason is that with the continuous increase of electricity load and the increasingly complex electricity environment. Traditional power protection modes such as fuses, leakage switches, air switches and other protection devices are seriously lagging behind in technology, coupled with single functions, lack of comprehensive safety protection and intelligent monitoring functions. Therefore, when the power supply line has faults such as leakage, overload, short circuit, overvoltage, phase loss, lightning strike, etc., it is difficult to respond quickly and accurately to prevent the formation of fire from the root cause. Because of this, it is imminent to replace the traditional power protection devices, which is the trend of the times.

【Content of invention】

The purpose of the utility model is to overcome the deficiencies of the prior art, to provide a leakage protection, overload protection, short circuit protection, overvoltage protection, undervoltage/phase loss protection, lightning protection functions, stable and reliable work, can A fire-proof leakage protector that effectively prevents electrical accidents and electrical fires.

The purpose of this utility model is achieved in that:

A fire-proof leakage protector, which includes a housing, is characterized in that the housing is provided with an input terminal and an output terminal, a main circuit board, a zero-sequence transformer, a sampling transformer, a current transformer, a power transformer, a communication device, lightning protection device, circuit breaker; the communication device can communicate with the computer; the zero-sequence transformer, current transformer, and sampling transformer are connected to the main circuit board; the lightning protection device is connected to the circuit breaker connection, the circuit breaker is connected with the main circuit board; the main circuit board is also connected with an audible and visual voice alarm device.

A fire leakage protector as described above is characterized in that the main circuit board is connected with a functional light board and a power switch.

A fire leakage protector as described above is characterized in that the acousto-optic voice alarm device further includes a mute switch.

A fire leakage protector as described above is characterized in that the input end and the output end are provided with indicator boards.

The utility model integrates leakage, overload, short circuit, overvoltage, undervoltage, phase loss and lightning protection, makes up for the shortcomings of air switch and leakage switch with single function and slow response, and adopts microcomputer control technology to realize leakage and overload , short circuit, overvoltage, undervoltage (lack of phase), lightning protection online detection intelligent, and can also communicate with the computer to form a network, and realize remote monitoring of 1-250 intelligent switches through a computer at the same time, and each can be accessed at any time The operation status of the smart switch can be turned on or off at any time, and the current or historical operation records of each smart switch can be read at any time; the work is stable and reliable, and can effectively prevent electrical accidents and electrical fires.

【Description of drawings】

Fig. 1 is the appearance structural diagram of the utility model;

Fig. 2 is one of the structural representations of the utility model after the housing is disassembled;

Fig. 3 is the second structural diagram of the utility model after the housing is disassembled;

Fig. 4 is the third structural diagram of the utility model after the housing is disassembled;

【Detailed ways】

A fireproof leakage protector, which is installed at the power inlet of the protected area, which includes a housing 1, in which an input terminal 2 and an output terminal 3, a main circuit board 5, a zero-sequence transformer 6, Sampling transformer 7, current transformer 8, power transformer 9, communication device 10, lightning protection device 11, circuit breaker 12; Described communication device 10 can communicate with computer, adopts microcomputer (single-chip microcomputer) control technology, computer technology , network technology, realize sampling, analog-to-digital conversion, calculation, analysis, judgment, and control in one; realize remote monitoring of 1-250 smart switches at the same time through a computer, and can access the operation status of each smart switch at any time, and can be accessed at any time Each smart switch can be turned on or off, and the current or historical operation records of each smart switch can be read at any time. And it can be linked with the fire control center. In case of emergency, the load power can be cut off remotely, and a feedback signal can be sent to the fire control center to alarm. Described zero-sequence transformer 6, current transformer 8, sampling transformer 7 are connected with main circuit board 5; Described lightning protection device 11 is connected with circuit breaker 12, and circuit breaker 12 is connected with main circuit board 5; The main circuit board 5 is also connected with an acousto-optic voice alarm device 13 .

The main circuit board 5 is connected with a functional light board 14 and a power switch 15, and the power switch 15 is controlled by an electric operating mechanism to realize the automatic breaking and automatic connecting mode. The acousto-optic voice alarm device 13 also includes a mute switch 16 . The input end 2 and the output end 3 are provided with indicator boards 17 .

The failure alarm of the present utility model is achieved in that: when the "fault" indicator light on the function lamp panel 14 was on, it indicated that the power supply system had a failure, and the user should be reminded to find out the cause and get rid of the failure as soon as possible.

The overload indication and alarm of the utility model is realized in this way: when any phase of the three-phase four-wire power supply is overloaded, the machine is still overloaded after a delay of 5-10s, the machine will automatically cut off the user's power supply line, and the sound, light and voice will Alarm device 13 can send alarm sound, reminds user's power supply line and overload phenomenon occurs, and this moment should shut off this machine power supply, after treating that troubleshooting, just opens motor power supply.

The electric leakage alarm of the present utility model is realized in the following way: when electric leakage occurs in the power supply line, and the electric leakage current exceeds the set value of electric leakage action current, the machine will issue an instruction to cut off the power supply within 0.1 second, at this time, the sound and light voice alarm device 13 will Sound the alarm. Remind the user that there is leakage in the power supply line. At this time, the power of the machine should be turned off, and the power of the motor should not be turned on until the fault is eliminated.

The undervoltage alarm of the utility model is realized in this way: when the voltage of any phase of the power supply line (phase A cannot be lacking) is short of voltage, and the undervoltage is still after a delay of 5S-10, the machine will issue a counter command to cut off the power supply, At this time, the acousto-optic and voice alarm device 13 will send out an alarm sound. Remind the user that the power supply line is undervoltage. At this time, the power of the machine should be turned off, and the power of the motor should be turned on after the fault is eliminated.

The overvoltage alarm of the utility model is realized in this way: when any phase voltage of the power supply line is overvoltage, and the overvoltage is still after a delay of 5S-10, the machine will issue a counter command to cut off the power supply. Alarm device 13 can send alarm sound. Remind the user that there is overvoltage on the power supply line. At this time, the power supply of the machine should be turned off, and the power supply of the motor should not be turned on until the fault is eliminated.

The short-circuit alarm of the utility model is realized in the following way: when there is a short-circuit in any phase in the three-phase four-wire system power supply circuit, the machine sends a counter-command to cut off the power supply. Remind the user that there is a short circuit in the power supply line. At this time, the power of the machine should be turned off, and the power of the motor should not be turned on until the fault is eliminated.

The lightning protection function of the utility model is realized in this way: when the power supply line is struck by lightning, after the internal processing of the lightning protection device 11, all ports of the power supply line have the same potential to the ground, that is, there is no potential difference between the charged lines, therefore, Electrical equipment will not be damaged by lightning.

Claims (4)

1. A fire leakage protector, which comprises a housing (1), is characterized in that, in the housing (1) is provided with an input terminal (2) and an output terminal (3), a main circuit board (5), zero sequence transformer (6), sampling transformer (7), current transformer (8), power transformer (9), communication device (10), lightning protection device (11), circuit breaker (12); The fast device (10) can communicate with the computer; the zero-sequence transformer (6), the current transformer (8), the sampling transformer (7) are connected with the main circuit board (5); the lightning protection device (11) is connected with circuit breaker (12), and circuit breaker (12) is connected with main circuit board (5); Main circuit board (5) is also connected with acousto-optic voice alarm device (13). 2. A fireproof leakage protector according to claim 1, characterized in that the main circuit board (5) is connected with a functional light board (14) and a power switch (15). 3. A fire-proof leakage protector according to claim 1, characterized in that, the acousto-optic and voice alarm device (13) further comprises a mute switch (16). 4. A fire leakage protector according to claim 1, characterized in that said input end (2) and output end (3) are provided with an indicator board (17).

Images