Multipath gas on-line real-time monitoring method and apparatus

Abstract

The invention relates to the field of environmental protection technology for oil field pollution, especially to a multipath gas on-line real-time monitoring method and a multipath gas on-line real-time monitoring apparatus. The multipath gas on-line real-time monitoring method comprises the following steps step 1, sampling to-be-detected gas by using a vacuum pump in a pumping-type remote sampling manner and sucking the to-be-detected gas into a detection pipeline; step 2, pretreating the gas sucked into the detection pipeline by using a filter; step 3, carrying out detection of oxygen, combustible gas and poisonous gas on the pretreated gas by using a gas detection instrument; and step 4, evacuating the gas in the detection instrument and the detection pipeline by using the vacuum pump. The invention has the following beneficial effects the problems like long circulation time of gas and existence of interference are overcome, instantaneity and accuracy of gas on-line detection are realized, and through remote sampling, unnecessary potential safety hazards to detection personnel during artificial close sampling are avoided, and personal safety of the work personnel is guaranteed.

Description

technical field [0001] The invention relates to the technical field of oil field pollution and environmental protection, in particular to an online real-time monitoring method and device for multi-channel gas. Background technique [0002] With the increase of national crude oil reserves, the number of crude oil storage tanks is also increasing. Traditional manual cleaning or semi-automatic cleaning will gradually be replaced by mechanical cleaning due to problems such as high labor intensity, long construction time, poor safety, and environmental pollution. replace. The volatilization of the oil in the storage tank will fill the tank with flammable gas. In order to avoid explosion or fire, inert gas is usually injected into the tank when the tank is mechanically cleaned to keep the tank below the explosion limit. In order to ensure the safety of cleaning the oil tank, real-time online monitoring of the oxygen content of the gas in the tank and the content of flammable gase...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a multi-channel gas online real-time monitoring method and device, which can easily solve the problems of long gas detection cycle time and interference, and realize the real-time online monitoring of gas in a real sense

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