Detecting and processing system for detecting concentration of combustible gas in oil-gas cavity of oil tank

The utility model discloses a detecting and processing system for detecting the concentration of combustible gas in an oil-gas cavity of an oil tank. The system comprises a tank field oil-gas diluting device and a detecting system, wherein the tank field oil-gas diluting device is connected with the oil-gas cavity of the oil tank, a diluted gas spray head on the tank field oil-gas diluting device is arranged in the oil-gas cavity, and the diluted gas spray head releases diluted gas after receiving alarm information of a central monitoring system; the detecting system comprises data acquisition units, oil-gas acquisition units and detecting heads, the data acquisition units are in communication connection with the central monitoring system, the oil-gas acquisition units are arranged in the oil-gas cavity of the oil tank and used for leading out the oil gas, and the detecting heads are arranged on the outer wall of the oil tank, are connected with the oil-gas acquisition units and have communication connection relationships with the data acquisition units. By the aid of the system, the problems that detection of dangerous cases of the combustible gas in the oil-gas cavity of the large oil tank is unsafe, low in efficiency and high in cost are solved, and the detection of the oil-gas concentration is high in efficiency, low in cost and safe.