An intelligent control device for nitrogen injection to prevent and extinguish fire

Abstract

The invention discloses an intelligent control device for nitrogen injection for fire preventing and extinguishing. The intelligent control device for nitrogen injection for fire preventing and extinguishing comprises a plurality of nitrogen injection pipes, a decelerating motor, an anti-explosion motor, a rotating speed sensor and a controller; the nitrogen injection pipes communicate axially, and small nitrogen injection holes are formed in the lateral pipe walls of the nitrogen injection pipes correspondingly; a nitrogen outlet is formed in the tail end of the tail-end nitrogen injection pipe in the nitrogen injection pipes, and a nitrogen inlet is formed in the front end of the head-end nitrogen injection pipe in the nitrogen injection pipes; the head-end nitrogen injection pipe penetrates through a hollow crankshaft at one end of the decelerating motor to be connected with the decelerating motor, and the other end of the decelerating motor communicates with a nitrogen connector; the rotating speed sensor is arranged on the head-end nitrogen injection pipe; the decelerating motor is connected with the anti-explosion motor; and the rotating speed sensor, the decelerating motor and the anti-explosion motor are connected with the controller. In the nitrogen injection process, the nitrogen injection pipes can be recycled, so that the waste phenomenon that the nitrogen injectionpipes are discarded in a goaf is avoided; and the nitrogen injection points are continuous in space so that the nitrogen injection effect can be improved.

Description

Technical field [0001] The invention relates to the technical field of mine safety and fire prevention, in particular to a nitrogen injection intelligent control device for fire prevention and fire prevention. Background technique [0002] At present, among coal mine accidents in my country, fire accidents caused by spontaneous combustion of coal account for a large proportion. Mine fires will not only seriously threaten the safety of coal mines and the lives of operators, but also cause a large amount of coal resource loss, resulting in toxic and harmful The gas causes serious pollution. Nitrogen injection fire-extinguishing technology is the main method commonly used in coal mines to prevent and control spontaneous combustion of coal in goafs. [0003] At the present stage of coal mines in our country, the commonly used buried pipe nitrogen injection fire-fighting technology is to arrange nitrogen injection pipelines along the air inlet of the working face. As the working face ad...

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Problems solved by technology

[0004] (1) The nitrogen injection point is discontinuous in space, which will seriously affect the nitrogen injection inertization efficiency, and a large amount of nitrogen injection is required to achieve the required effect, which wastes resources

[0005] (2) The nitrogen injection pipeline is discarded in the goaf and cannot be recycled and reused, resulting in waste of material resources and increasing the cost of nitrogen injection process

[0006] (3) Nitrogen injection pipeline transportation, installation and other processes require manual labor, which increases the labor cost of nitrogen injection process

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