Air leakage detection device and method for explosion door of vertical air shaft

Abstract

The invention discloses an air leakage detection device and method for an explosion door of a vertical air shaft, and relates to the technical field of explosion door detection. The detection device comprises a draught fan, a sulfur hexafluoride detector arranged on the side, close to the draught fan, of the fan chamber, and a sulfur hexafluoride release device arranged on the explosion door outerguide rail vertical rod. After the sulfur hexafluoride detector is started for 30 min, the air bag is opened, sulfur hexafluoride gas is released for six hours, the air bag and the sulfur hexafluoride detector are closed, and whether the explosion door leaks air or not is determined by reading detection data in the sulfur hexafluoride detector. The invention discloses an air leakage detection device and method for an explosion door of a vertical air shaft. The sulfur hexafluoride release device is installed on the explosion door guide rail vertical rod, the sealing condition of the explosiondoor can be judged by recording the sulfur hexafluoride gas concentration, measured by the sulfur hexafluoride detector, in the roadway, the measuring process is simple, rapid and easy to operate, theblank in the aspect of air leakage detection of the explosion door is filled up, and wide applicability is achieved.

Description

technical field [0001] The invention relates to the technical field of explosion-proof door detection, in particular to an air leakage detection device and method for an explosion-proof door of a vertical wind shaft. Background technique [0002] When a gas or dust explosion occurs underground in a coal mine, the shock wave generated by the explosion will propagate along the roadway and cause damage. When the shock wave reaches near the wellhead of the air duct, the explosion-proof door will open to release the pressure to protect the main ventilator from damage. [0003] However, during the use of explosion-proof doors, cracks and poor sealing are prone to occur, forming air leakage channels. The main reasons are: 1. The explosion-proof doors are located outside the mine, in contact with the atmospheric environment, and are easily eroded; 2. The explosion-proof doors are under the action of the ground environment , there may be deformation and aging; 3. The wear and tear ca...

AI Technical Summary

Problems solved by technology

[0003] However, during the use of explosion-proof doors, cracks and poor sealing are prone to occur, forming air leakage channels. The main reasons are: 1. The explosion-proof doors are located outside the mine, in contact with the atmospheric environment, and are easily eroded; 2. The explosion-proof doors are under the action of the ground environment , there may be deformation and aging; 3. The wear and tear caused by the explosion-proof door maintenance process

[0004] The ventilator is responsible for the ventilation of the entire mine, which is the lifeblood of the mine. The extraction ventilation method is often used in mines. Once the explosion-proof door leaks air and connects to the outside atmosphere, it will cause the power loss of the ventilator. Not only can it not meet the mine ventilation requirements, but also gas Safety issues such as fire dust will also follow, and the consequences will be disastrous

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