Double alarm device for air breathing apparatus

Abstract

The invention discloses a double alarm device of an air breather. The double alarm device comprises an alarm device body. An air inlet is formed in the outside of one side of the alarm device body and is connected with a pressure signal generator, a centrifugal vibration generator is connected with the pressure signal generator, an air outlet is formed in the outside of the other side of the alarm device body and is connected with a whistle, a sound intensifying device is connected to a side of the whistle, a vibration signal conversion device is connected to a side of the sound intensifying device and is connected with the centrifugal vibration generator, clamp straps are arranged on the other two sides of the alarm device body, high-frequency flashing devices are arranged on the clamp straps, light sensing devices, flash switches and frequency regulators are arranged on the high-frequency flashing devices, and the air inlet, the pressure signal generator, the centrifugal vibration generator, the air outlet and the whistle are connected with one another by air pipes. The double alarm device has the advantages of light, convenient and speedy equipment, portability, convenience in use, various alarm modes and high safety performance.

Description

technical field [0001] The invention relates to an air respirator, in particular to a dual alarm device for an air respirator. Background technique [0002] The air respirator is a self-contained open air respirator. The air respirator is widely used in fire protection, chemical industry, shipbuilding, petroleum, smelting, warehouses, laboratories, mines and other departments. It can be used for safe and effective fire extinguishing, emergency rescue and rescue work in various environments such as , steam or hypoxia, and is sometimes called a fire mask. It uses compressed gas cylinders as the gas source, but the gas contained in the cylinders is compressed air. Its working principle is that the air respirator uses the positive pressure self-contained open respirator of compressed air. The staff exhales gas from the lungs through the full face mask, and the breathing valve discharges it into the atmosphere. When the staff exhales, there is an appropriate amount of fresh air ...

AI Technical Summary

Problems solved by technology

The design of the present invention has the characteristics of small size, light weight, stable performance, and flexible installation, and can promptly remind operators of the use status of compressed oxygen or compressed air to avoid fatal threats caused by insufficient margin, but this technical solution only provides a Sound alarm system, when the pressure in the respirator is too high or too low, the operator cannot know immediately, and it will be too late when the situation is critical

Chinese patent ZL 201220257346.6 describes an air pressure monitoring and alarm device for air breathing apparatus, including a high-pressure joint, a pressure detection alarm for communicating with the outside world, a pressure gauge and an alarm whistle. The high-pressure joint has at least four interconnected interfaces, The first port of the high-pressure connector is connected to the high-pressure pipeline of the air respirator, the second port of the high-pressure connector is connected to the pressure detection alarm, the third port of the high-pressure connector is connected to the pressure gauge, and the fourth port of the high-pressure connector Connect with the alarm whistle, so that when the pressure gauge displays the pressure value, the pressure detection alarm transmits the collected pressure signal to the external rescue device or sends it to the external warning device through the external rescue device, so that it is near or far away from the disaster relief site The on-site commander can know the pressure of the user's air respirator in real time, so as to make more correct on-site command according to the pressure of the user's air respirator, which provides a stronger guarantee for the safety of the user, but This technical solution requires the cooperation of other personnel, and has the defect that light and sound signals cannot be sent out in places with low visibility or darkness

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