A particle trap for mine explosion-proof rubber-wheeled vehicle emission detection

Abstract

A particle trap used for emission detection of mine explosion-proof rubber-tyred vehicles, characterized in that when the exhaust gas is initially filtered through the filter and enters the filter element, since the area of ​​the filter holes is lower than the area of ​​the air inlet, a natural pressurization effect is formed, and the pressure of the exhaust gas increases. Larger, then filtered and rectified through the innermost filter layer, and filtered by the other two layers of filter layers, and finally discharged through the rectification layer. The invention has a simple structure and is easy to clean. Exhaust gas detection sensor.

Description

technical field [0001] The invention relates to an emission particle catcher, in particular to a particle catcher used for emission detection of explosion-proof rubber-tyred vehicles, and belongs to the field of tail gas emission detection. Background technique [0002] With the widespread use of mining diesel engines, the analysis of exhaust gas from mining diesel engines has been paid more and more attention. In the exhaust components of mining diesel engines, PM, that is, solid particles, such as heavy metal compounds, lead compounds, black smoke and oil mist, etc., are often much higher than Road diesel locomotives; "MT 990-2006 General Technical Conditions for Mining Explosion-proof Diesel Engines" stipulates that the emission concentrations of CO and NOx in the exhaust of mining diesel engines need to use non-dispersive infrared analyzer (NDIR) and chemiluminescence analyzer (CLD) respectively However, the dust environment and PM particles in the exhaust gas will cause...

AI Technical Summary

Problems solved by technology

[0002] With the widespread use of mining diesel engines, the analysis of exhaust gas from mining diesel engines has been paid more and more attention. In the exhaust components of mining diesel engines, PM, that is, solid particles, such as heavy metal compounds, lead compounds, black smoke and oil mist, etc., are often much higher than Road diesel locomotives; "MT 990-2006 General Technical Conditions for Mining Explosion-proof Diesel Engines" stipulates that the emission concentrations of CO and NOx in the exhaust of mining diesel engines need to use non-dispersive infrared analyzer (NDIR) and chemiluminescence analyzer (CLD) respectively However, the dust environment and PM particles in the exhaust gas will cause damage to the elastic body or short circuit of the gas NDIR detector, which has a great impact on the exhaust gas analysis; the existing particle filters are mostly used in road diesel locomotives Exhaust gas detection, particle regeneration will change the composition of the original exhaust gas, and the volume is too large; and the shape of the exhaust port of the rubber-tyred vehicle is different. Therefore, to solve this problem, a mining explosion-proof diesel engine exhaust particle separator is proposed.

[0003] There is also a "Car Exhaust Particle Catcher" with a publication number of CN2017103615073, which is a device for collecting and processing fine particles in the exhaust gas discharged from the car engine. The device can be easily taken out and installed. Directly maintain the filter element to improve the maintenance effect, and there are protective parts to protect the liner, but the exhaust pressure of the explosion-proof rubber wheeled vehicle is low, which cannot meet the requirements of exhaust boosting;

[0004] There is also a publication number CN2018106618152 "a diesel particle trap based on DOC and DPF", which introduces the exhaust gas emitted by the diesel engine into the trap, and the exhaust gas with black smoke particles enters the DOC assembly from the intake assembly. The DOC carrier in the DOC assembly removes the harmful gas in the exhaust gas, and the exhaust gas after the catalytic oxidation of the DOC assembly enters the DPF assembly, and the DPF ceramic carrier in the DPF assembly absorbs the soot particles and is processed by the DPF assembly The final exhaust gas is discharged into the atmosphere through the gas outlet assembly, and the carbon dioxide catalysis will destroy the gas components, causing errors in the emission test results

[0005] There is also a "diesel engine particle catcher" with a publication number of CN2015105399582. A smoke and dust separation device is installed in the lower casing to achieve the purpose of eliminating smoke and dust, and it will also destroy gas components.

[0006] The above-mentioned existing overrunning clutch cannot meet the disadvantages of pressurization and indestructible gas composition, and it is urgent to design a particle catcher with simple structure and easy cleaning, which is used for exhaust gas emission detection inlet protection exhaust gas detection sensor of explosion-proof rubber-tyred vehicles

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