Anti-explosion sound-light warning device of integrated structure

Abstract

An anti-explosion sound-light warning device of an integrated structure is characterized by comprising a power supply circuit, an oscillating circuit, a guard grating circuit and an intrinsic safety element. The output end of the power supply circuit is connected with the input end of the oscillating circuit, the output end of the oscillating circuit is connected with the input end of the guarding grating circuit, and the output end of the guard grating circuit is connected with the intrinsic safety element. According to the anti-explosion sound-light warning device, power supply generation circuits including the power supply circuit and the oscillating circuit are connected with the intrinsic safety element through the guard grating circuit. A complex external protection module can be eliminated in the practical use process.

Description

Technical field [0001] The invention relates to an alarm device, in particular to an alarm device with an integrated structure integrating explosion-proof, buzzer and flashing functions. Background technique [0002] The explosion-proof (flashing) buzzer is a structurally integrated electronic alarm device, which is an indispensable device for transmitting electrical energy to the user's electrical system in an explosive environment. It is mainly used for warning in electrical control circuits of machine tools, machinery, electric power, telecommunications, ships, metallurgy, and chemical industries. [0003] At present, my country's explosion-proof electrical products are divided into coal mines and factories, and factories are divided into explosion-proof electrical appliances for gas environments and explosion-proof electrical appliances for dust environments. Explosion-proof electrical appliances used in factories have played a significant role in the development of my country...

AI Technical Summary

Problems solved by technology

[0004] 1. The explosion-proof buzzer products on the market cannot be directly driven by high-voltage AC110V, AC220V, AC240V or even AC380V. They must be driven by reducing the voltage and converting high voltage into low voltage. At the same time, the front stage needs to be connected to a safety barrier (safety barrier need to be placed in a safe area), with such complex cooperation, the explosion-proof buzzer can be used in dangerous places

This has resulted in more accessories required during the use of the product, and at the same time limited the use environment, bringing a lot of changes to the user.

[0005] 2. There are serious limitations in the use of sound-oriented buzzer products. For example, if a simple buzzer product is used in a place where noise is generated occasionally, the occasional noise will cause the buzzer to fail. The warning sound is covered, and the operators on the scene cannot respond in time, causing serious losses

[0006] 3. The protection performance is poor, usually only up to IP54 (IP means the international protection level

However, their approach is to apply piezoelectric buzzers to low-voltage explosion-proof buzzer products. The front stage of such products must be connected to a safety barrier, and the integration of sound and light has not yet been realized.

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