Oil-gas recycle monitoring control circuit and device
A monitoring control and detection device technology, applied in distribution devices, special distribution devices, liquid distribution, transportation or transfer devices, etc., can solve problems such as misrecords, oil and gas recovery monitoring records and gas station control data deviations, etc., to ensure complete The effect of sexual judgment
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specific Embodiment approach 1
[0030] 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 oil gun state signal detected by the gun state detection unit and the oil flow pulse signal detected by the liquid flow detection unit judge whether a refueling is completed. When the pulse signal and the oil gun state signal are generated simultaneously, it is judged that the refueling process has started; If the gun status signal does not change, it is judged that a refueling process is not completed; if the pulse signal is interrupted and the oil gun status signal changes, it is judged that a refueling process is completed. After one refueling is completed, the refueling amount is calculated, c...
specific Embodiment approach 2
[0048] 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, and the controller determines that a refueling process is completed when the state of the oil gun and the pulse signal change at the same time.
[0049] In a specific embodiment of the present application, it includes two gas flow...
specific Embodiment approach 3
[0051] The control unit includes an MCU and a 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 a refueling process is completed, and the amount of refueling is calculated. Gas volume, 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.
[0052] Specifically, the control of the control unit, such as Figure 7 shown, including the following steps:
[0053] A1, initialization;
[0054] A2. The refueling amount is cleared;
[0055] A3, the air return volume is cleared;
[0056] A4. Determine whether the refueling gun is activated, if so, go to the next step, if not, continue to judge;
[0057] A5. Read the number of refueling pulses;
[0058] A6. Read the return air flow signal;
[0059] A7. Determine whether the refueling gun is...
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