Positive pressure bundle pipe monitoring system for mine underground fire and toxic and harmful gases

Abstract

The invention discloses a positive pressure bundle pipe monitoring system for mine underground fire and toxic and harmful gas, belonging to the technical field of mine safety monitoring. The positive pressure bundle pipe monitoring system comprises a gas positive-pressure transportation system, a gas analysis system, a control system, a data acquisition system and a workstation. The system transports gas in a monitored area in a centralized positive pressure transportation manner to certain underground or ground sites to perform centralized detection on the components and the concentrations of the gas. Because the gas is transported in the positive pressure manner, the components and the concentrations of the gas in the gas transportation process are not distorted at all, the pipe is not easy to block, the transportation distance is long, no external water enters, whether the pipeline is damaged to leak gas is easy to detect, the gas can automatically enter the analysis detection device, and the detection result is accurate and reliable. The positive pressure bundle pipe monitoring system is applicable to the analysis and monitoring of coal spontaneous combustion in coal mines, exogenous mine fire and toxic and harmful gas in coal mines, and is also applicable to the analysis and monitoring of metal mine fire and toxic and harmful gas.

Description

technical field [0001] The invention relates to a safety monitoring system, in particular to the monitoring of fires and toxic and harmful gases in mines, and belongs to the technical field of mine safety monitoring. Background technique [0002] At present, the beam tube monitoring is to monitor the gas in many areas of the mine that are prone to fire and toxic and harmful gases. , to judge the spontaneous combustion fire in the mine, the development status of the fire caused by external causes and the danger of toxic and harmful gases. [0003] According to different centralized detection locations, it can be divided into uphole type bundle tube system and downhole type bundle tube system. The uphole bundled tube system transports all gases to the ground for centralized analysis, detection and monitoring; the downhole bundled tube system analyzes and detects all gases underground, and transmits the detection data to the ground for monitoring. [0004] According to the de...

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Problems solved by technology

No matter in theory or in practice, this type of beam tube has some problems that are difficult to overcome, which makes it difficult to achieve better results in practical application, mainly in the following aspects:

[0006](1) The ambient gas along the negative pressure bundle tube is easy to enter into the bundle tube, resulting in distortion of the detected gas composition and concentration;

[0007](2) The damage of the negative pressure bundle tube is not easy to detect, observe and detect;

[0008](3) Negative pressure bundled tubes are prone to blockage and freezing of tubes, which may cause the tubes to be flattened by their own negative pressure under high negative pressure;

[0009](4) Water ring vacuum pump will add moisture to the detected gas during the pumping process, which will affect the accuracy of detection and the service life of the detector;

[0010](5) The gas sample cannot enter the analysis device automatically

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