Working principle The liquid resistance detection method is to fill the oil and gas recovery pipeline with nitrogen at the specified nitrogen flow rate, and simulate the oil and gas passing through the oil and gas recovery pipeline. Use a pressure gauge or equivalent device to detect the liquid resistance of the gas passing through the pipeline to understand the degree of resistance to the gas caused by various reasons in the pipe to determine whether it affects the oil and gas recovery. The airtightness detection method uses nitrogen to pressurize the vapor recovery system to 500 Pa, allowing the system pressure to decay. The residual pressure value after 5 minutes of detection is compared with the minimum residual pressure limit specified in Table 2. If it is lower than the limit, it indicates that the leakage degree of the system exceeds the allowable range. The gas-liquid ratio detection method is to install a tight adapter at the nozzle of the fueling gun. The adapter is connected with a gas flow meter, and the air flow first passes through the gas flow meter, and then enters the oil and gas collection hole on the nozzle of the fueling gun. The ratio of the measured gas volume to the gasoline volume measured at the same time by the dispenser is called the gas-liquid ratio. Through the detection of gas-liquid ratio, the recovery effect of the oil and gas recovery system can be understood.

Measuring instrument control Measuring instrument control includes the first inspection and subsequent inspections

1. Test conditions: ambient temperature (0-35)C, normal pressure.

2. Testing equipment: nitrogen tank, pressure gauge, float flow meter, adapter, pressurized hose, quick connector, gas flow meter, oil drum for testing

3. Test items: 1 Liquid resistance detection method 2. Airtightness detection method 3. Gas-liquid ratio detection method

Which industries need to do oil and gas recovery monitoring?

Commonly found in gas station projects.