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Monitoring protector of electrical fire

A technology of electrical fire and protectors, applied in fire alarms, instruments, measuring electricity, etc.

Inactive Publication Date: 2013-07-03
广州市扬新技术研究有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the prior art, the air circuit breaker used by the electrical fire monitoring protector protects the large current short circuit, but it is found that the small current flashover (ignition) also has enough energy to ignite within a certain period of time. Combustibles causing fire accidents

Method used

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  • Monitoring protector of electrical fire
  • Monitoring protector of electrical fire
  • Monitoring protector of electrical fire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] A monitoring protector against electrical fires such as figure 1 , figure 2 As shown, a DC stabilized power supply 10 , a multi-channel sensor 20 , a detection amplifier circuit 30 , an output relay 100 and an alarm circuit 90 are provided.

[0145] The input end of the DC stabilized power supply 10 and the input end of the multi-channel sensor 20 are connected to the live wire L of the power supply, the output end of the DC stabilized voltage power supply 10 and the output end of the multi-channel sensor 20 are connected to the input end of the detection amplifier circuit 30, and the detection and amplification The output terminal of the circuit 30 is connected with the output relay 100 and the alarm circuit 90 . After transformer B transforms the external power supply, it outputs from its secondary coil L8. The DC stabilized power supply 10 rectifies the secondary coil L8 of the transformer B and outputs a working DC power supply of 12V after being filtered by the ...

Embodiment 2

[0255] An electrical fire monitoring protector, the other content is the same as that of Embodiment 1, the difference lies in that the circuit flashover detection amplifier circuit 800 and the detection amplifier circuit 30 are different from Embodiment 1. Its circuit flashover detection amplifying circuit 800 detects amplifying circuit 30 such as image 3 As shown, the circuit flashover detection amplifier circuit 800 detection amplifier circuit 30 is provided with resistors R81-R89, resistors R810-R815, capacitors C81-C84, diodes D81-D85, voltage regulator diode Z81, thyristor G81, and triode T81. And operational amplifiers A81 ~ A84;

[0256] One end of the resistor R15 is connected to the first end of the secondary coil L6, and the second end of the secondary coil L6 is vacant;

[0257] One end of the capacitor C84 is connected to the other end of the resistor R15, and the other end of the capacitor C84, the positive input of the operational amplifier A81 is connected to ...

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Abstract

The invention relates to a monitoring protector for electrical fire. The monitoring protector is provided with a DC stabilized power supply, a multi-channel sensor, a detection amplifying circuit, an output relay and an alarm circuit, wherein the input end of the DC stabilized power supply and the input end of the multi-channel sensor are connected with a live line; the output end of the DC stabilized power supply and the output end of the multi-channel sensor are connected with the input end of the detection amplifying circuit; the output end of the detection amplifying circuit is separately connected with the output relay and the alarm circuit; the multi-channel sensor comprises a mutual inductor H1, a current sensor H2, a spark sensor H3 and an electric leakage and shock sensor H4; and the detection amplifying circuit is provided with an over current detection amplifying circuit, an over voltage detection amplifying circuit, an electric leakage and shock detection amplifying circuit, a man circuit overheat detection amplifying circuit, an intelligent power supply main switch detection amplifying circuit, and a circuit sparking detection amplifying circuit. The monitoring protector can intelligently and automatically turn off or turn on main power supplies, can prevent phenomenon of sparking of low current, has high safety coefficient, and can prevent electrical fire.

Description

technical field [0001] The invention relates to the technical field of electrical safety, in particular to a monitoring protector for preventing electrical fires. Background technique [0002] With the development of society, electronic and electrical products have been more and more widely used in our lives, and subsequently, the probability of electrical fires that may occur in electronic products is also getting higher and higher. The electrical fire monitoring protector has the monitoring and protection functions of overcurrent, overvoltage and electric leakage, which can greatly reduce the probability of electrical fire, so it has been widely used. [0003] However, in the prior art, even if people turn off all electrical appliances, the electrical fire monitoring protector still has a 220V high voltage in the circuit, switch, and socket. cause a fire accident. [0004] In addition, in the prior art, the air circuit breaker used by the electrical fire monitoring prote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/00G01R19/165G01R31/02
Inventor 魏锡秦
Owner 广州市扬新技术研究有限责任公司