Technology Research On High Absorption Ratio Of Gas-gas Jet Ventilation

Currently, there are still some problems in local semi-closed space ventilation about poison gas, and it did not have great importance to the existence of security risks. In order to place explosive toxic gas detoxification of local semi-enclosed space ventilation better ventilation, ventilation is more economical, more to improve the operating environment, the paper was overhead absorption than the gas - air jet ventilation key technologies.The main research content of the following: Study on dedusting mechanism of Technology Research On High Absorption Ratio Of Gas -gas Jet Ventilation, including the swirling jet basic theory, working principle of HAROGJV, the basic properties of equations, factors, gas -air jet ventilation range of parameters the theory to be confirmed; HAROGJV device of the key technical parameters optimization, including different nozzle diameter, different pipe lengths, different pressure gas flow to the suction volume and other parameters of influence; developed ventilation, high efficiency, suction volume, noise ratio and low overhead gas jet suction device, and fully mechanized coal face high drilling field test of industrial ventilation.In this paper, methods mainly clude theoretical analysis, experimental studies and field tests and research. Theoretical analysis include limited space jet theory, computational fluid dynamics, ventilation, dust, and mathematical statistics, theory of HAROGJV to determine the parameters and scope of experimental studies; laboratory research, carried out with different absorption duct making, the establishment of experimental systems, measurement and analysis of experimental data, using orthogonal and the method of combining individual performance test and analysis obtained o HAROGJV device of the best matching parameters.Meanwhile, gas jet noise issues arise in the initial experiments; industrial experiment, the choice of Huaibei Coal Mining Group, 714 South Qi Gong Zuomian working space . The results in laboratory research, the greater the jet pressure gas flow, the greater the inhaled air volume, diameter and the suction air flow in direct proportion to the linear approximation of the relationship between the inhalation of a short pipe for maximum air flow, followed by a long pipe, straight pipe suction volume of the most difference; Noise processing, using cavity muffler noise, noise sources in the 500Hz low frequency noise below the noise reduction effect is obvious; in industrial experiments, using only compressed air in the jet ventilation and use only the second high-pressure rotary water jet device When the concentration of both with a good scavenging effect, while the temperature has decreased significantly, both essentially the same air volume, you can know the two programs are clear and effective measures to toxic and harmful gases; at the same time using the pressure jet ventilation devices and second rotation, when the water flow ventilation, the best, the minimum temperature dropped and the maximum air flow.In short, in laboratory research and industrial test study can tell the HAROGJV device is a good device to improve explosive and poison gas detoxification of local semi-enclosed space ventilation , developed the device efficiency high suction capacity, low noise, effectively improve local semi-enclosed space with explosive and poison gas ventilation detoxification effect, effectively improve the working environment.