Device and method for detecting leakproofness of gas station sealed system, and online monitoring system

Abstract

The invention relates to a device and a method for detecting leakproofness of a gas station sealed system, and an online monitoring system for gas station oil gas recovery. In the device for detecting leakproofness of the gas station sealed system, the sealed system comprises an oil tank, an oiling machine and a pipeline connecting the two, and the device comprises a processor and a memory which is used for storing at least one computer code. The computer code is configured to be executed on the processor and enable the processor to obtain oil gas pressures corresponding to the starting time and the ending time of a preset detection time slot among multiple time slots when an oil station stops working at a preset frequency; to calculate the oil gas pressure decrease rate corresponding to a period from each starting time to the corresponding ending time; determining whether the decrease rate exceeds a preset threshold or not, and recording the number of times the decrease rate exceeds the preset threshold in the predetermined warning period; and responding to that the number of times that the decrease rate exceeds the preset threshold exceeds the warning threshold, and generating a signal to trigger an alarm.

Description

technical field [0001] The present invention relates to oil and gas detection in gas stations, in particular to a device for detecting the airtightness of a gas station's airtight system, a method for detecting the airtightness of a gas station's airtight system, a device for detecting the airtightness of a gas station's airtight system, and Oil and gas recovery online monitoring (monitoring) system for gas stations. Background technique [0002] In the airtightness detection for gas stations in the prior art, it is often required that there should be no oil unloading operations within 3 hours before the detection or during the detection process, nitrogen gas needs to be used, and the gas station refueling operation needs to be stopped before the detection starts etc. for airtight monitoring. During the detection process of the prior art, nitrogen is used to pressurize the oil and gas recovery system to 500 Pa, allowing the system to have pressure decay. The residual press...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned existing detection technology affects the normal refueling operation of the gas station, and nitrogen gas is also used, which makes the detection inconvenient and affects the work of the gas station

In addition, in the detection system of the prior art, before the detection work starts, the oil and gas in the oil tank need to be emptied first, and then filled with nitrogen for detection. Venting the oil and gas will cause waste of oil and gas on the one hand, and cause environmental pollution on the other hand

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