Oil gas recovery method, system and equipment and storage medium

Abstract

The embodiment of the invention provides an oil gas recovery method, system and equipment and a storage medium, and belongs to the technical field of environmental protection. The oil gas recovery method specifically comprises the steps that in the oil gas extraction operation process, oil gas concentration sampling is conducted on extracted oil gas, and oil gas concentration sampling data are obtained; based on the oil gas concentration sampling data, whether the current vehicle has a vehicle-mounted oil gas recovery function or not is judged, and a judgment result is obtained; and executing corresponding oil and gas recovery operation based on the judgment result, and transmitting the judgment result to an oil and gas recovery online monitoring system of the gas station. According to the embodiment of the invention, the identification and compatibility of the vehicle with the vehicle-mounted oil gas recovery function are realized, and the applicability and recovery efficiency of the oil gas recovery system of the gas station are improved.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection technology, and in particular to an oil and gas recovery method, an oil and gas recovery system, an electronic device and a readable storage medium. Background Art

[0002] The on-board oil and gas recovery system is a control technology that effectively reduces oil and gas pollution during the refueling process. By setting an activated carbon canister in the vehicle's fuel supply system, when the vehicle is refueling, a liquid seal is formed in the thinner refueling pipeline, which can prevent oil and gas from escaping from the vehicle's fuel tank and refueling pipe. At the same time, the oil and gas overflowing from the fuel tank during refueling is transported to the activated carbon canister through the vent valve and adsorbed, thereby realizing oil and gas recovery and avoiding waste. The promotion and application of the on-board oil and gas recovery system is of great significance to the current reduction of emissions from the vehicle's fuel system. According to the experience data of the United States' promotion of on-board oil and gas recovery systems, the service life of the on-board oil and gas recovery system is as high as about 15 years, and it can maintain a recovery efficiency of more than 95% for a long time. Compared with the secondary oil and gas recovery system commonly used in my country at this stage, it has the advantages of high recovery efficiency, low maintenance cost, and more stable and reliable performance.

[0003] With the continuous promotion and application of vehicles with on-board oil and gas recovery systems in my country, when the existing ordinary oil and gas recovery refueling guns are adapted to the above-mentioned vehicles, although the above-mentioned vehicles have already collected and processed the oil and gas internally during the refueling process, the refueling oil and gas recovery system will still maintain the gas-liquid ratio in the range of 1.0-1.2, and there is often a sealing gap between the gas collection hood and the refueling port of the oil and gas recovery refueling gun, which will cause the existing oil and gas recovery system to actually recover excess air into the buried oil tank, causing the existing volatile gas phase balance inside the oil tank to be broken, which in turn accelerates the volatilization of the oil to a certain extent, and finally discharges it through the PV valve of the oil tank. Existing research results show that the simultaneous use of the on-board oil and gas recovery system and the secondary oil and gas recovery system may cause the recovery efficiency to drop by about 15%. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an oil and gas recovery method, system, equipment and storage medium to solve the above technical problems.

[0005] In order to achieve the above object, an embodiment of the present invention provides an oil and gas recovery method, which acts on an oil and gas recovery controller, and the method includes:

[0006] During the oil and gas extraction operation, the extracted oil and gas are sampled for oil and gas concentration to obtain oil and gas concentration sampling data;

[0007] Based on the oil and gas concentration sampling data, determine whether the current vehicle has an on-board oil and gas recovery function, and obtain a determination result;

[0008] Based on the judgment result, a corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station.

[0009] Optionally, the method further comprises:

[0010] Get the configuration information of the fuel dispenser;

[0011] Based on the configuration information of the fuel dispenser, the gas phase space data of the fuel dispenser is calculated;

[0012] According to the gas phase space data, the initialization pumping time is calculated;

[0013] The oil and gas concentration sampling of the extracted oil and gas to obtain oil and gas concentration sampling data includes:

[0014] When the pumping time reaches the initial pumping time, the oil and gas concentration sampling of the extracted oil and gas begins to obtain the oil and gas concentration sampling data.

[0015] Optionally, the method further comprises:

[0016] Determine that a refueling signal is detected, and extract the oil and gas from the vehicle's fuel tank through a recovery pipeline;

[0017] When the pumping time reaches the initial pumping time, the extracted oil and gas begins to be sampled for oil and gas concentration, and oil and gas concentration sampling data is obtained, including:

[0018] When the pumping time reaches the initial pumping time, the extracted oil and gas are sampled for oil and gas concentration at preset time intervals to obtain oil and gas concentration sampling data; wherein the oil and gas concentration sampling data includes oil and gas concentration sampling data collected within multiple preset time intervals.

[0019] Optionally, judging whether the current vehicle has an on-board oil vapor recovery function based on the oil vapor concentration sampling data, and obtaining a judgment result includes:

[0020] The collected oil and gas concentration sampling data are averaged to calculate the average oil and gas concentration;

[0021] Determining whether the average oil and gas concentration is less than a first preset concentration value;

[0022] If the average oil and gas concentration is less than the first preset concentration value, it is determined that the current vehicle has an on-board oil and gas recovery function.

[0023] Optionally, judging whether the current vehicle has an on-board oil vapor recovery function based on the oil vapor concentration sampling data and obtaining a judgment result further includes:

[0024] Obtain historical oil and gas concentration data and historical temperature data;

[0025] Based on the historical oil and gas data and the historical temperature data, establishing a relationship between oil and gas concentration and temperature;

[0026] Based on the calculated average oil and gas concentration and the relationship between the oil and gas concentration and the temperature, it is determined whether the current vehicle has an on-board oil and gas recovery function.

[0027] Optionally, the method further comprises:

[0028] Confirm that the gun-lifting signal is detected and extract the oil and gas in the recovery pipeline;

[0029] Before sampling the extracted oil and gas for oil and gas concentration to obtain oil and gas concentration sampling data, the method further includes:

[0030] Conducting concentration testing on the oil and gas extracted from the recovery pipeline to obtain the oil and gas concentration in the recovery pipeline;

[0031] Determining whether the oil and gas concentration in the recovery pipeline is greater than a second preset concentration value;

[0032] If the oil and gas concentration in the recovery pipeline is greater than the second preset concentration value, it is determined that there is a leakage between the recovery pipeline and the atmospheric environment, and corresponding repair operations are performed for the leakage.

[0033] Optionally, if the oil and gas concentration in the recovery pipeline is less than or equal to the second preset concentration value, it is detected whether there is a refueling signal, and if a refueling signal is detected, the oil and gas in the automobile tank are extracted through the recovery pipeline.

[0034] Optionally, the method further comprises:

[0035] When the current pumping time reaches the preset pumping time, detect whether the current recovery pipeline pressure reaches the preset pressure value;

[0036] If the current recovery pipeline pressure does not reach the preset pressure value, it is determined that there is a leak between the recovery pipeline and the atmospheric environment, and corresponding repair operations are performed for the leak.

[0037] Optionally, performing a corresponding oil and gas recovery operation based on the judgment result includes:

[0038] If it is determined that the current vehicle has an on-board oil and gas recovery function, the air extraction operation is stopped.

[0039] Optionally, the method of executing a corresponding oil and gas recovery operation based on the judgment result and transmitting the judgment result to the oil and gas recovery online monitoring system of the gas station further includes:

[0040] If it is determined that the current vehicle does not have an on-board oil and gas recovery function, the gas-liquid ratio of the oil and gas recovery system is adjusted to within a preset ratio range; wherein the gas-liquid ratio is the ratio of the volume of oil and gas extracted by the current vehicle during refueling to the volume of gasoline added to the vehicle's fuel tank.

[0041] In a second aspect of the embodiment of the present invention, an oil and gas recovery system is provided, the system comprising an oil and gas recovery controller, an oil and gas recovery vacuum pump and an oil and gas concentration meter; the oil and gas recovery controller is connected to the oil and gas recovery vacuum pump and the oil and gas concentration meter;

[0042] The oil and gas recovery controller is used to control the oil and gas recovery vacuum pump to extract gas from the recovery pipeline and the automobile fuel tank;

[0043] The oil and gas concentration meter is used to detect the concentration of the extracted oil and gas to obtain the oil and gas concentration;

[0044] The oil and gas recovery controller is also used for:

[0045] Sampling the oil and gas concentration of the extracted oil and gas to obtain oil and gas concentration sampling data;

[0046] Based on the oil and gas concentration sampling data, determine whether the current vehicle has an on-board oil and gas recovery function, and obtain a determination result;

[0047] Based on the judgment result, a corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station.

[0048] Optionally, the system further comprises an oil and gas flow control valve;

[0049] The oil and gas recovery controller is also used to stop the extraction operation by controlling the closing of the oil and gas flow control valve or the oil and gas recovery vacuum pump when it is determined that the current vehicle has an on-board oil and gas recovery function;

[0050] When it is determined that the current vehicle does not have the on-board oil and gas recovery function, the gas-liquid ratio of the oil and gas recovery system is adjusted to within a preset ratio range by controlling the oil and gas flow control valve or the oil and gas recovery vacuum pump.

[0051] A third aspect of the present application provides an electronic device configured to perform the above-mentioned oil and gas recovery method.

[0052] A fourth aspect of the present application provides a machine-readable storage medium having instructions stored thereon, which, when executed by a processor, configures the processor to execute the above-mentioned oil and gas recovery method.

[0053] The embodiment of the present invention performs concentration sampling of the extracted oil and gas during the oil and gas extraction operation to obtain oil and gas concentration sampling data, and then determines whether the current vehicle has an on-board oil and gas recovery function based on the oil and gas concentration sampling data to obtain a determination result, and controls the oil and gas recovery operation of the current vehicle based on the determination result. That is, the embodiment of the present invention determines between vehicles with an on-board oil and gas recovery function and vehicles without an on-board oil and gas recovery function, and performs a refueling oil and gas recovery operation corresponding to the vehicle function determination result, thereby achieving identification and compatibility of vehicles with an on-board oil and gas recovery function, and improving the applicability and recovery efficiency of the oil and gas recovery system of a gas station.

[0054] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0056] Figure 1 is a schematic diagram of the structure of the oil and gas recovery system of the present invention;

[0057] Figure 2 It is a schematic flow diagram of the oil and gas recovery method of the present invention. Description of the drawings:

[0059] 1 Oil and gas recovery controller; 2 Oil and gas flow meter; 3 Oil and gas recovery vacuum pump;

[0060] 4 Oil and gas concentration meter; 5 Oil and gas flow control valve; 6 Pressure gauge;

[0061] 7. Pull-off valve; 8. Fuel gun. DETAILED DESCRIPTION

[0062] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0064] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0065] Embodiment 1

[0066] Please refer to Figure 1 , Figure 1 It is a schematic diagram of the architecture of an oil and gas recovery system provided in an embodiment of the present application.

[0067] The oil and gas recovery system includes an oil and gas recovery controller 1, an oil and gas flow meter 2, an oil and gas recovery vacuum pump 3, an oil and gas concentration meter 4, an oil and gas flow control valve 5, a pressure gauge 6, a breakaway valve 7 and a refueling gun 8.

[0068] It is understandable that the oil and gas recovery system is connected to the oil and gas recovery online monitoring system of the gas station so that various data in the oil and gas recovery process can be uploaded to the oil and gas recovery online monitoring system of the gas station for display.

[0069] The oil and gas recovery controller 1 is respectively connected to the oil and gas flow meter 2, the oil and gas recovery vacuum pump 3, the oil and gas concentration meter 4, the oil and gas flow control valve 5 and the pressure gauge 6, and is used to control each device. It can be a PLC or a single-chip microcomputer. During operation, the oil and gas recovery controller 1 controls the oil and gas recovery vacuum pump 3 to pump air, and uses the oil and gas concentration meter 4 to detect the concentration of the pumped oil and gas to obtain the oil and gas concentration, and samples the oil and gas concentration to obtain the oil and gas concentration sampling data, and further judges whether the vehicle has the on-board oil and gas recovery function. Based on the vehicle function judgment result, the oil and gas recovery vacuum pump 3 and the oil and gas flow control valve 5 are controlled to continue or stop pumping air from the vehicle tank. During the specific implementation process, the oil and gas recovery controller 1 can also use the oil and gas flow meter 2 to obtain the flow rate data of oil and gas recovery, and the oil and gas recovery controller 1 can also use the pressure gauge 6 to measure the pressure value of the recovery pipeline. The oil and gas recovery controller 1 can also control the gas-liquid ratio of the oil and gas recovery system within a preset ratio range through the opening of the oil and gas flow control valve 5 or the speed of the oil and gas recovery vacuum pump 3, and can turn on or off the vacuum pump by controlling the power supply of the oil and gas recovery vacuum pump 3.

[0070] The oil and gas flow meter 2 may be a Roots flow meter or a vortex flow meter, and is used to obtain the oil and gas flow rate during the oil and gas recovery process.

[0071] The oil and gas recovery vacuum pump 3 can be a variable frequency NP pump or an industrial frequency durr pump, which is used to evacuate the recovery pipeline and the automobile tank, or change the flow rate by frequency conversion to change the gas-liquid ratio of the extraction.

[0072] The oil and gas concentration meter 4 may be a general-purpose semiconductor or infrared hydrocarbon gas concentration sensor, which is used to detect the concentration of oil and gas in the pipeline.

[0073] The oil and gas flow control valve 5 may be an electromagnetically controlled regulating valve, which is used to control the gas-liquid ratio of the oil and gas recovery system in the recovery pipeline.

[0074] The pressure gauge 6 can adopt an explosion-proof micro-pressure sensor suitable for oil and gas pressure measurement to detect the pressure value of the recovery pipeline.

[0075] The breakaway valve 7 is a coaxial hose breakaway valve, which is used to prevent oil leakage in an abnormal breakaway state.

[0076] The refueling gun 8 is used to connect the automobile fuel tank and the recovery pipeline. When it is detected that the user pulls out the refueling gun 8 from the refueling machine, it sends a gun lifting signal to the oil and gas recovery controller 1. When it is detected that the user starts to refuel, it sends a refueling start signal to the oil and gas recovery controller 1.

[0077] Embodiment 2

[0078] Please refer to Figure 2 , Figure 2 It is a schematic flow chart of an oil and gas recovery method provided in this embodiment.

[0079] This embodiment is implemented based on the oil and gas recovery system provided in the first embodiment, and this embodiment acts on the oil and gas recovery controller 1 .

[0080] Step S100: During the oil and gas extraction operation, the extracted oil and gas is sampled for oil and gas concentration to obtain oil and gas concentration sampling data.

[0081] In this embodiment, the oil and gas recovery vacuum pump 3 is used to evacuate the recovery pipeline, or the automobile fuel tank is evacuated through the recovery pipeline, and then the extracted oil and gas is tested for concentration using the oil and gas concentration meter 4 to obtain oil and gas concentration sampling data.

[0082] It should be understood that the present embodiment provides two ways of pumping air. One method is to use the oil and gas recovery vacuum pump 3 to pump air from the recovery pipeline and the automobile fuel tank simultaneously when a refueling start signal is detected. It can be understood that when the current vehicle is refueling, the refueling gun 8 will generate a refueling signal. When the oil and gas recovery controller 1 detects the refueling start signal, after determining that the ratio of the oil and gas recovery flow rate Q1 to the refueling flow rate Q0 is within the normal range of 1.0 to 1.2, and the refueling flow rate is within the normal range of 20-50L / min, that is, after the refueling pump and the oil and gas recovery vacuum pump 3 are both in normal working conditions, the recovery pipeline and the automobile fuel tank are pumped to detect the oil and gas concentration in the recovery pipeline and the automobile fuel tank; the other method is that before the current vehicle is refueled, the refueling pipeline is not connected to the automobile fuel tank. When the refueling gun 8 is picked up by the user, a gun lifting signal is generated. When the oil and gas recovery controller 1 detects the gun lifting signal, the recovery pipeline is pumped to recover the oil and gas that previously remained in the pipeline.

[0083] It is worth mentioning that, since there may be residual oil and gas from previous refueling and oil and gas recovery in the recovery pipeline, in order to avoid misjudgment of the oil and gas concentration in the automobile tank, this embodiment proposes delaying the time for sampling the withdrawn oil and gas concentration. Specifically: obtain the configuration information of the fuel dispenser, and based on the configuration information of the fuel dispenser, calculate the gas phase space data of the fuel dispenser, and then calculate the initialization air pumping time according to the gas phase space data. When the current air pumping time reaches the initialization air pumping time, sample the withdrawn oil and gas concentration to obtain the oil and gas concentration sampling data. Among them, the calculation of the gas phase space data of the fuel dispenser is specifically based on the configuration of the actual management of the fuel dispenser, and the sum of the gas phase space inside the fueling gun 8, the gas phase space inside the oil and gas recovery coaxial hose, and the break valve 7, the gas-liquid separator, and the gas phase space of the internal pipeline of the fuel dispenser is calculated, which is recorded as the gas phase space data of the fuel dispenser, recorded as V1; wherein, the calculation of the initialization air pumping time is shown in the following formula:

[0084] T1=V1 / Q+τ;

[0085] In the formula, T1 is the initialization air extraction time, V1 is the gas phase space data of the fuel dispenser, and Q is the air extraction flow rate of the oil and gas recovery vacuum pump 3; wherein, Q can be obtained by measuring the current flow rate of the oil and gas recovery vacuum pump 3 by the oil and gas flowmeter 2, or by obtaining the historical flow rate data of the oil and gas recovery vacuum pump 3 and taking the average value.

[0086] Based on the above two air extraction methods, the present embodiment provides two oil and gas concentration sampling methods, specifically: corresponding to the air extraction method of synchronously extracting air from the recovery pipeline and the automobile fuel tank when a refueling start signal is detected, when the current air extraction time reaches the initialization air extraction time, the extracted oil and gas concentration is sampled at a preset time interval to obtain oil and gas concentration sampling data, that is, the oil and gas concentration is sampled at equal time intervals during the refueling process, and the obtained oil and gas concentration sampling data can reflect the change of oil and gas concentration during the refueling process; corresponding to the method of synchronously extracting air from the recovery pipeline when a gun lifting signal is detected, it is necessary to perform concentration detection on the extracted gas to obtain the oil and gas concentration of the recovery pipeline, and further determine whether the oil and gas concentration of the recovery pipeline is greater than a second preset concentration value. If so, it is determined that there is a leak between the recovery pipeline and the refueling pipeline, which may be an internal leak in the oil and gas circuits inside the refueling gun 8, an internal leak in the oil and gas circuits at the break valve 7, etc., and corresponding repairs are performed for the leak. If not, it is detected whether there is a refueling signal. If a refueling signal is detected, the recovery pipeline and the automobile fuel tank are synchronously extracted.

[0087] The above method determines whether there is a leak between the recovery pipeline and the refueling pipeline by analyzing the oil and gas concentration. In addition, since the oil and gas recovery system is in a sealed environment, the present embodiment also provides a method for further determining whether there is a leak between the recovery pipeline and the atmospheric environment by analyzing the pressure value of the recovery pipeline. Specifically: when the current vacuuming time exceeds the preset vacuuming time, detect whether the current recovery pipeline pressure reaches the preset pressure value. If the current recovery pipeline pressure reaches the preset pressure value, detect whether there is a refueling signal. If a refueling signal is detected, vacuum the recovery pipeline and the vehicle tank simultaneously. If the current recovery pipeline pressure does not reach the preset pressure value, it is determined that there is a leak between the recovery pipeline and the atmospheric environment, and corresponding repairs are performed for the leak.

[0088] Step S200: Based on the oil vapor concentration sampling data, determine whether the current vehicle has an on-board oil vapor recovery function and obtain a determination result.

[0089] Step S300: Based on the judgment result, a corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station.

[0090] It should be understood that when refueling and recovering oil and gas for a vehicle with an on-board oil and gas recovery function (ORVR), since the oil and gas in the fuel tank have been recovered by the vehicle's on-board oil and gas recovery system (ORVR), when the secondary oil and gas recovery system evacuates the fuel tank again, the recovered gas contains a large amount of air, which can easily destroy the volatilization balance of the buried oil tank and pose a safety hazard. Therefore, this embodiment proposes to determine whether the current vehicle has an on-board oil and gas recovery function. If the current vehicle has an on-board oil and gas recovery function, the oil and gas flow control valve 5 or the oil and gas recovery vacuum pump 3 is controlled to be closed, and the current vehicle is stopped from being evacuated, thereby improving the oil and gas recovery efficiency and saving energy; if the current vehicle does not have an on-board oil and gas recovery function, the current vehicle continues to be recovered from oil and gas.

[0091] Based on the oil vapor concentration sampling data obtained in step S100, this embodiment provides two ways to determine whether the current vehicle has the on-board oil vapor recovery function. One way is to average the above oil vapor concentration sampling data to obtain an average oil vapor concentration value, and determine whether the average oil vapor concentration value is greater than a first preset concentration value. If so, it is determined that the current vehicle does not have the on-board oil vapor recovery function. If not, it means that the current vehicle has the on-board oil vapor recovery function. Since the oil vapor concentration inside the automobile tank is usually a saturated concentration and is directly related to the ambient temperature, this embodiment also proposes to obtain historical oil vapor concentration and historical temperature data to further establish a relationship function between oil vapor concentration and temperature, which is recorded as C m =f(T),C m is the oil-gas concentration, T is the temperature, and then the relationship function is used to determine whether the average oil-gas concentration of the current vehicle is greater than the preset multiple, that is, C m =f(T)*k, where the preset multiple k is a configurable coefficient. If the average oil vapor concentration is greater than the preset multiple relationship function, it is determined that the current vehicle does not have the on-board oil vapor recovery function, and the current vehicle continues to be pumped. If the average oil vapor concentration is less than or equal to the preset multiple relationship function, it is determined that the current vehicle has the on-board oil vapor recovery function, and the oil vapor recovery of the current vehicle is stopped. Among them, the relationship function between temperature and concentration can be P is the saturated vapor pressure of gasoline, and the first preset concentration can be set to the oil vapor concentration C m 50% of.

[0092] It is understandable that when it is determined that the current vehicle does not have the on-board oil and gas recovery function and continues to pump air from the current vehicle, it is also necessary to control the gas-to-liquid ratio of the oil and gas recovery system within a preset ratio range. The gas-to-liquid ratio is the ratio of the volume of oil and gas pumped back by the current vehicle during refueling to the volume of gasoline added to the car's fuel tank, and the preset ratio range is 1.00-1.20.

[0093] This embodiment provides examples of oil and gas recovery methods under different installation conditions, as shown below:

[0094] Example 1 Due to limited working conditions, the pressure gauge 6 cannot be installed. When the refueling gun 8 starts to refuel the current vehicle, the oil and gas recovery controller 1 detects the refueling signal and simultaneously starts the oil and gas recovery vacuum pump 3 to evacuate the recovery pipeline and / or the vehicle tank. The refueling flow rate and the oil and gas flow rate Q are obtained through the refueling machine mainboard and the oil and gas flow meter 2 respectively. In order to avoid the residual oil and gas from previous refueling and oil and gas recovery in the refueling pipeline, Example 1 can calculate the gas phase space data of the refueling machine according to the actual pipeline configuration of the refueling machine, and calculate the initialization exhaust time according to the gas phase space data, T1=V1 / Q+τ, wherein T1 is the exhaust flow rate of the oil and gas recovery vacuum pump 3, wherein the current flow rate of the oil and gas recovery vacuum pump 3 can be measured by the oil and gas flow meter 2, and the current exhaust time is 200. When the gas time reaches the initialization gas extraction time, the concentration of the extracted oil and gas is sampled at the preset time interval to obtain the oil and gas concentration sampling data collected within multiple preset time intervals. After the oil and gas concentration sampling data is processed by a certain mathematical statistics method, the average oil and gas concentration is calculated to determine whether the average oil and gas concentration is greater than a preset threshold value. If so, it is considered that the vehicle tank contains a high concentration of oil and gas, and the current vehicle is determined to be a vehicle without an on-board oil and gas recovery function. The vehicle continues to be pumped, and the gas-liquid ratio of the oil and gas recovery system is controlled within the range of 1.0-1.2. If not, it is considered that the oil and gas concentration in the vehicle tank is low, and the current vehicle is determined to be a vehicle with an on-board oil and gas recovery function, and oil and gas recovery for the vehicle is stopped. Example 1 can also establish a relationship function between oil and gas concentration and temperature based on the historical oil and gas concentration data and historical temperature data of the gas station's previous refueling and recovery processes, and determine whether the average oil and gas concentration is greater than a preset multiple of the relationship function. If so, it is determined that the current vehicle is a vehicle without an on-board oil and gas recovery function, and the vehicle continues to be pumped, and the gas-liquid ratio is controlled within the range of 1.0-1.2. If not, it is determined that the current vehicle is a vehicle with an on-board oil and gas recovery function, and oil and gas recovery for the vehicle is stopped.

[0095] Example 2 Due to limited working conditions, the pressure gauge 6 and the oil and gas flow control valve 5 are not installed. At this time, the oil and gas recovery vacuum pump 3 is in an uncontrolled state. When the recovery control module detects the gun-lifting signal, the oil and gas recovery vacuum pump 3 is started in advance to evacuate the recovery pipeline. At this time, the gas circuit is in a closed state. The purpose is to recover the residual oil and gas in the recovery pipeline. Example 2 can calculate the gas phase space data of the fuel dispenser according to the actual pipeline configuration of the fuel dispenser. According to the gas phase space data, the initialization pumping time is calculated, T1=V1 / Q+τ, where Q is the pumping flow rate of the oil and gas recovery vacuum pump 3, which is obtained by obtaining the historical flow rate data of the oil and gas recovery vacuum pump 3 and averaging it. When the current pumping time reaches the initialization pumping time, the oil and gas concentration of the recovered recovery pipeline is sampled. If the oil and gas concentration of the recovery pipeline is greater than a preset concentration value, if so, it is determined whether the recovery pipeline and the fueling pipeline are connected. If there is a leak, if not, check whether there is a refueling signal. If a refueling signal is detected, the recovery pipeline and the automobile tank are simultaneously evacuated. After the current evacuation time reaches a preset time, the concentration of the withdrawn oil and gas is sampled according to the preset time interval to obtain the oil and gas concentration sampling data collected within multiple preset time intervals. After the oil and gas concentration sampling data is processed by a certain mathematical and statistical method, the average oil and gas concentration is calculated to determine whether the average oil and gas concentration is greater than a preset threshold value. If so, it is considered that the automobile tank contains a high concentration of oil and gas, and the current vehicle is determined to be a vehicle without an on-board oil and gas recovery function. The vehicle continues to be evacuated, and the gas-liquid ratio of the oil and gas recovery system is controlled within the range of 1.0-1.2. If not, it is considered that the oil and gas concentration in the automobile tank is low, and the current vehicle is determined to be a vehicle with an on-board oil and gas recovery function, and the oil and gas recovery of the vehicle is stopped. Example 2 can also establish a relationship function between oil and gas concentration and temperature based on the historical oil and gas concentration data and historical temperature data of the gas station's previous refueling and recovery processes, and determine whether the average oil and gas concentration is greater than a preset multiple of the relationship function. If so, it is determined that the current vehicle is a vehicle without an on-board oil and gas recovery function, and the vehicle continues to be pumped, and the gas-liquid ratio is controlled within the range of 1.0-1.2. If not, it is determined that the current vehicle is a vehicle with an on-board oil and gas recovery function, and oil and gas recovery for the vehicle is stopped.

[0096] Due to the limitation of working conditions, Example 3 does not install the oil and gas flow meter 2. When the recovery control module detects the gun-lifting signal, the oil and gas recovery vacuum pump 3 is started in advance to evacuate the recovery pipeline. At this time, the gas circuit is in a closed state. The purpose is to recover the residual oil and gas in the recovery pipeline. For the detection of whether there is a leak in the recovery pipeline, Example 3 can detect whether the current recovery pipeline pressure reaches the preset pressure value when the current pumping time exceeds the preset pumping time. If the current recovery pipeline pressure reaches the preset pressure value, it detects whether there is a refueling signal. If a refueling signal is detected, it will be The recovery pipeline and the automobile fuel tank are evacuated. If the current recovery pipeline pressure does not reach the preset pressure value, it is determined that there is a leak in the recovery pipeline or the oil and gas recovery vacuum pump 3 is faulty, and corresponding repairs are performed for the leak or fault. If not, the oil and gas concentration in the recovery pipeline is further sampled to determine whether the oil and gas concentration in the recovery pipeline is greater than a preset concentration value. If so, it is determined that there is a leak between the recovery pipeline and the refueling pipeline. If not, it is detected whether there is a refueling signal. If a refueling signal is detected, the recovery pipeline and the automobile fuel tank are evacuated simultaneously. After determining that there is no leakage between the recovery line and the refueling line, in Example 3, after the current air extraction time reaches a preset time, the concentration of the extracted oil and gas is sampled at preset time intervals to obtain oil and gas concentration sampling data collected within multiple preset time intervals. After the oil and gas concentration sampling data is processed by a certain mathematical and statistical method, the average oil and gas concentration is calculated to determine whether the average oil and gas concentration is greater than a preset threshold value. If so, it is considered that the vehicle's fuel tank contains a high concentration of oil and gas, and the current vehicle is determined to be a vehicle without an on-board oil and gas recovery function. The vehicle continues to be extracted, and the gas-liquid ratio of the oil and gas recovery system is controlled within the range of 1.0-1.2. If not, it is considered that the oil and gas concentration in the vehicle's fuel tank is low, and the current vehicle is determined to be a vehicle with an on-board oil and gas recovery function, and oil and gas recovery for the vehicle is stopped. Example 3 can also establish a relationship function between oil and gas concentration and temperature based on the historical oil and gas concentration data and historical temperature data of the gas station's previous refueling and recovery processes, and determine whether the average oil and gas concentration is greater than a preset multiple of the relationship function. If so, it is determined that the current vehicle is a vehicle without an on-board oil and gas recovery function, and the vehicle continues to be pumped, and the gas-liquid ratio is controlled within the range of 1.0-1.2. If not, it is determined that the current vehicle is a vehicle with an on-board oil and gas recovery function, and oil and gas recovery for the vehicle is stopped.

[0097] This embodiment samples the oil and gas concentration of the extracted oil and gas during the oil and gas extraction operation to obtain oil and gas concentration sampling data, and then judges whether the current vehicle has an on-board oil and gas recovery function based on the oil and gas concentration sampling data, obtains a judgment result, and reports the judgment result to the gas station oil and gas recovery online monitoring system, and controls the oil and gas recovery operation of the current vehicle based on the judgment result. That is, the embodiment of the present invention judges vehicles with on-board oil and gas recovery functions and vehicles without on-board oil and gas recovery functions, and performs oil and gas recovery operations corresponding to the vehicle function judgment results, thereby realizing the identification and compatibility of vehicles with on-board oil and gas recovery functions, avoiding excessive emissions caused by a large amount of air being sucked into the buried oil tank, improving the applicability and overall recovery efficiency of oil and gas recovery, and saving energy.

[0098] Embodiment 3

[0099] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0100] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0101] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0102] Embodiment 4

[0103] An embodiment of the present invention further provides a computer-readable storage medium, on which instructions are stored. When the instructions are executed by a processor, the program having the steps of the oil and gas recovery method is executed.

[0104] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0105] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0106] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0107] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0108] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0109] In addition, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part.

[0110] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0111] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. An oil and gas recovery method, characterized in that: Acting on an oil vapor recovery controller, the method includes: During the oil and gas extraction operation, the extracted oil and gas are sampled for oil and gas concentration to obtain oil and gas concentration sampling data; Based on the oil and gas concentration sampling data, determine whether the current vehicle has an on-board oil and gas recovery function, and obtain a determination result; Based on the judgment result, a corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station.

2. The oil and gas recovery method according to claim 1, characterized in that: The method further comprises: Get the configuration information of the fuel dispenser; Based on the configuration information of the fuel dispenser, the gas phase space data of the fuel dispenser is calculated; According to the gas phase space data, the initialization pumping time is calculated; The oil and gas concentration sampling of the extracted oil and gas to obtain oil and gas concentration sampling data includes: When the pumping time reaches the initial pumping time, the oil and gas concentration sampling of the extracted oil and gas begins to obtain the oil and gas concentration sampling data.

3. The oil and gas recovery method according to claim 2, characterized in that: The method further comprises: Determine that a refueling signal is detected, and extract the oil and gas from the vehicle's fuel tank through a recovery pipeline; When the pumping time reaches the initial pumping time, the extracted oil and gas begins to be sampled for oil and gas concentration, and oil and gas concentration sampling data is obtained, including: When the pumping time reaches the initial pumping time, the extracted oil and gas are sampled for oil and gas concentration at preset time intervals to obtain oil and gas concentration sampling data; wherein the oil and gas concentration sampling data includes oil and gas concentration sampling data collected within multiple preset time intervals.

4. The oil and gas recovery method according to claim 3, characterized in that: The method of determining whether the current vehicle has an on-board oil and gas recovery function based on the oil and gas concentration sampling data, and obtaining a determination result includes: The collected oil and gas concentration sampling data are averaged to calculate the average oil and gas concentration; Determining whether the average oil and gas concentration is less than a first preset concentration value; If the average oil and gas concentration is less than the first preset concentration value, it is determined that the current vehicle has an on-board oil and gas recovery function.

5. The oil and gas recovery method according to claim 4, characterized in that: The step of determining whether the current vehicle has an on-board oil and gas recovery function based on the oil and gas concentration sampling data and obtaining a determination result further includes: Obtain historical oil and gas concentration data and historical temperature data; Based on the historical oil and gas data and the historical temperature data, establishing a relationship between oil and gas concentration and temperature; Based on the calculated average oil and gas concentration and the relationship between the oil and gas concentration and the temperature, it is determined whether the current vehicle has an on-board oil and gas recovery function.

6. The oil and gas recovery method according to claim 5, characterized in that: The method further comprises: Confirm that the gun-lifting signal is detected and extract the oil and gas in the recovery pipeline; Before sampling the extracted oil and gas for oil and gas concentration to obtain oil and gas concentration sampling data, the method further includes: Conducting concentration testing on the oil and gas extracted from the recovery pipeline to obtain the oil and gas concentration of the recovery pipeline; Determining whether the oil and gas concentration in the recovery pipeline is greater than a second preset concentration value; If the oil and gas concentration in the recovery pipeline is greater than the second preset concentration value, it is determined that there is a leak between the recovery pipeline and the atmospheric environment, and a corresponding repair operation is performed for the leak.

7. The oil and gas recovery method according to claim 6, characterized in that: If the oil and gas concentration in the recovery pipeline is less than or equal to the second preset concentration value, it is detected whether there is a refueling signal. If a refueling signal is detected, the oil and gas in the automobile tank are extracted through the recovery pipeline.

8. The oil and gas recovery method according to claim 7, characterized in that: The method further comprises: When the current pumping time reaches the preset pumping time, detect whether the current recovery pipeline pressure reaches the preset pressure value; If the current recovery pipeline pressure does not reach the preset pressure value, it is determined that there is a leak between the recovery pipeline and the atmospheric environment, and corresponding repair operations are performed for the leak.

9. The oil and gas recovery method according to claim 8, characterized in that: The performing of corresponding oil and gas recovery operations based on the judgment result includes: If it is determined that the current vehicle has an on-board oil and gas recovery function, the air extraction operation is stopped.

10. The oil and gas recovery method according to claim 9, characterized in that: Based on the judgment result, the corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station, and further includes: If it is determined that the current vehicle does not have an on-board oil and gas recovery function, the gas-liquid ratio of the oil and gas recovery system is adjusted to within a preset ratio range; wherein the gas-liquid ratio is the ratio of the volume of oil and gas extracted by the current vehicle during refueling to the volume of gasoline added to the vehicle's fuel tank.

11. An oil and gas recovery system, characterized in that: The system includes an oil and gas recovery controller, an oil and gas recovery vacuum pump and an oil and gas concentration meter; the oil and gas recovery controller is connected to the oil and gas recovery vacuum pump and the oil and gas concentration meter; The oil and gas recovery controller is used to control the oil and gas recovery vacuum pump to extract gas from the recovery pipeline and the automobile fuel tank; The oil and gas concentration meter is used to detect the concentration of the extracted oil and gas to obtain the oil and gas concentration; The oil and gas recovery controller is also used for: Sampling the oil and gas concentration of the extracted oil and gas to obtain oil and gas concentration sampling data; Based on the oil and gas concentration sampling data, determine whether the current vehicle has an on-board oil and gas recovery function, and obtain a determination result; Based on the judgment result, a corresponding oil and gas recovery operation is performed, and the judgment result is transmitted to the oil and gas recovery online monitoring system of the gas station.

12. The oil vapor recovery system according to claim 11, characterized in that: The system also includes an oil and gas flow control valve; The oil and gas recovery controller is also used to stop the extraction operation by controlling the closing of the oil and gas flow control valve or the oil and gas recovery vacuum pump when it is determined that the current vehicle has an on-board oil and gas recovery function; When it is determined that the current vehicle does not have the on-board oil and gas recovery function, the gas-liquid ratio of the oil and gas recovery system is adjusted to within a preset ratio range by controlling the oil and gas flow control valve or the oil and gas recovery vacuum pump.

13. An electronic device, characterized in that: include: A processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the machine-readable instructions are executed by the processor, the oil and gas recovery method according to any one of claims 1 to 10 is executed.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions for causing a machine to execute the oil and gas recovery method according to any one of claims 1 to 10.

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