Oil-gas recovery monitoring control method and oil-gas recovery on-line monitoring system
A monitoring and control, oil and gas technology, applied in special distribution devices, packaging, distribution devices, etc., can solve problems such as false records, oil and gas recovery monitoring records and oil station control data deviations, to ensure safety, improve measurement accuracy, and achieve Precisely controlled effects
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specific Embodiment approach 1
[0048] A kind of oil gas recovery monitoring control circuit of the present invention, such as figure 1 As shown, it includes an oil gun state detection unit, a gas flow detection unit, a liquid flow detection unit, and a control unit. The control unit is respectively connected with the oil gun state detection unit, the gas flow detection unit, and the liquid flow detection unit. The state signal of the oil gun detected by the gun state detection unit and the pulse signal of oil flow detected by the liquid flow detection unit judge whether a recovery of oil and gas is completed. If the state signal of the oil gun does not change, it is judged that a refueling process is not completed; if the pulse signal is interrupted and the state signal of the oil gun changes, it is judged that a refueling process is completed. After the primary oil and gas recovery is completed, the refueling amount is calculated, combined with the gas flow output by the gas flow detection unit, the gas-li...
specific Embodiment approach 2
[0066] An oil gas recovery monitoring and control device, comprising an oil gun state detection device, a gas flow detection device, a liquid flow detection device, a controller, the oil gun state detection device, a gas flow detection device, and a liquid flow detection device are connected to the controller respectively, and the oil The gun state detection device is used to detect the state of the oil gun and transmit the detection result to the controller; the gas flow detection device is used to detect the return air flow signal and transmit it to the controller to calculate the return air volume; the liquid flow detection device is used to detect the refueling pulse The number is transmitted to the controller to calculate the amount of refueling. When the controller changes the state of the oil gun and the pulse signal at the same time, it determines that the oil and gas recovery process is completed once.
[0067] In a specific embodiment of the present application, it in...
specific Embodiment approach 3
[0069] The control unit includes MCU and memory. The MCU is used to perform calculations and receive gas flow signals, liquid flow signals, and oil gun status signals. According to the oil gun status signals and liquid flow signals, it is judged whether an oil and gas recovery process is completed, and the amount of refueling is calculated. Return air volume and gas-liquid ratio. When the gas-liquid ratio is greater than or equal to the set value, the gun lock signal is output to lock the oil gun.
[0070] Specifically, the control of the control unit, such as Figure 7 shown, including the following steps:
[0071] A1, initialization;
[0072] A2. The refueling amount is cleared;
[0073] A3, the air return volume is cleared;
[0074] A4. Determine whether the refueling gun is activated, if so, go to the next step, if not, continue to judge;
[0075] A5. Read the number of refueling pulses;
[0076] A6. Read the return air flow signal;
[0077] A7. Determine whether the...
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