An electrical fire intelligent protection device

Abstract

The invention discloses an electrical fire intelligent protection device, which includes: a processor for processing logical comparisons of data collected and returned by various parts, and controlling the operation of all central control systems; a capacitive reactance collector for collecting current signal data sent back to the processor; a comparator, which is used to compare the data value collected and output by the capacitive inductive reactance collector with the set data value; a follower; a proportional amplifier; a control mechanism; an executive operating mechanism. The present invention collects the signal of the load circuit through the capacitive inductive reactance collector and outputs it to the proportional amplifier, comparator, processor and follower for processing and comparison, and compares the instantaneous value in the collected load circuit with the set value to obtain The reaction mechanism has a fast detection speed, and the control mechanism reacts quickly after detection, and the power supply and load circuit are cut off quickly before the short-circuit spark is generated, which increases the device's suppression of short-circuit sparks and increases the safety of device protection.

Description

Technical field [0001] The present invention relates to a safe electrical field, and more particularly to an electrical fire intelligent protection device. Background technique [0002] The short circuit of the electrical circuit will generate sparks, while the spark size is proportional to the size of the voltage current in the line, when the device generates a line short circuit, the center temperature of the line can reach 1300 degrees or more (instantaneous) 380V power supply, the temperature can reach 1800 Above the degree, the simultaneous sparks are ignited, wood, cotton, etc. If the short-channel point does not disconnect the loop, the line will generate the insulating layer of the outer table of the high-temperature melting line, causing electrical high angling, the huge current in the line can make metal melt while huge sparks can ignite all materials that can be combustible, resulting in fire, Although a series of protective devices such as circuit breakers, protector,...

AI Technical Summary

Problems solved by technology

If the short-circuit point is not disconnected and the circuit continues to be disconnected, the circuit will generate high temperature and melt the insulating layer on the surface of the circuit, causing a large electrical fire. The huge current in the circuit can melt the metal and the huge spark can ignite all combustible materials to cause a fire. Although there are a series of protective devices such as circuit breakers, protectors, fuses, etc. in the electrical control cabinet, these protective devices are all based on the effective value of the voltage or the effective value of the current for comparative protection.

[0003] The traditional circuit breaker uses a coil type electromagnetic tripping device or a bimetal reed thermal deformation device for short circuit protection. The biggest disadvantage of this protection device is that the response speed is slow and cannot suppress the spark during short circuit. It may fail over time. In some cases, the bimetal sheet will be damaged by thermal stress during the process of multiple thermal deformations and cannot be reset, which will cause protection failure

There are also many electric meters that install current transformers inside to detect the current. When the current reaches a certain value, the meter reacts to cut off the power and then protects it. However, when the protection reacts, a large short-circuit current spark has been generated, and the above-mentioned equipment Both are detection methods of current effective value

[0004] Therefore, based on the above situation, the present invention designs an electrical fire intelligent protection device to solve the above-mentioned shortcomings such as slow response and slow action of the detection of the effective value of the passing current.

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