Electronic oil gas recovery oil gun and oil gas recovery method

Abstract

The invention provides an electronic oil gas recovery oil gun which comprises a sealing and pressure detection module used for sealing an oil filling port of an injected container and detecting the pressure value of a gas collecting hood in the oil filling process; and the control module is used for judging whether the injected object is provided with the vehicle-mounted refueling oil gas recovery system or not based on the pressure value of the gas collecting hood. According to the electronic oil gas recovery oil gun, a unique sealing structure is adopted, so that secondary oil gas recovery of a gas station is carried out in a relatively closed environment, air suction is effectively reduced, and the problem of excessive discharge caused by air suction of an underground oil tank is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of refueling equipment, and in particular to an electronic oil and gas recovery refueling gun and an oil and gas recovery method. Background Art

[0002] With the rapid development of the economy and society, the level of intelligence is getting higher and higher. As a window for sales companies to the society, gas stations need to strengthen intelligent construction and improve risk management. In recent years, with the implementation of online monitoring systems at gas stations, gas stations have achieved significant results in environmental protection control, and have realized fault alarms in aspects such as refueling status monitoring, increasing a certain level of safety.

[0003] The refueling system mainly includes the refueling machine, oil pipe, refueling gun, etc. The data obtained by the online monitoring system of the gas station comes from the feedback of the refueling machine, and cannot directly obtain the real-time operation data of the refueling gun. The traditional refueling gun is mechanical and uses the Venturi effect to control the start of the oil gun. After the traditional oil gun has been running for a long time, the wear of the mechanical components will cause the oil and gas to operate in abnormal conditions, which may further cause more serious safety accidents. Therefore, at present, gas stations generally replace traditional mechanical oil guns regularly, but abnormal conditions are still inevitable.

[0004] For the status detection of the fuel gun, the existing technology adds a monitoring module to the traditional fuel gun, but the mechanical structure of the fuel gun is complex and compact. After the monitoring module is installed, the fuel gun becomes bulky, which is not conducive to the operation of the refueling staff on the one hand, and on the other hand, it is difficult to adapt to the fuel dispenser after the size increases.

[0005] In view of the problems of the prior art, the present invention provides an electronic oil and gas recovery refueling gun and an oil and gas recovery method. Summary of the invention

[0006] In order to overcome the defects of the prior art, the present invention provides an electronic oil and gas recovery refueling gun, the refueling gun comprising:

[0007] A sealing and pressure detection module, which is used to seal the refueling port of the container being filled during the refueling process and detect the pressure value of the gas collecting hood;

[0008] The control module determines whether the injected object is equipped with an on-vehicle refueling gas recovery system based on the pressure value of the gas collecting hood.

[0009] According to one embodiment of the present invention, the sealing and pressure detection module includes: an oil and gas sealing unit, which is used to seal the fuel filling port of the container to be injected during the refueling process, wherein the oil and gas sealing unit includes a soft sealing unit and an electromagnetic unit, the soft sealing unit includes a plurality of pairs of soft sealing materials arranged on the air collecting hood, and the electromagnetic unit includes a plurality of pairs of sealing electromagnetic structures arranged on the air collecting hood, and during the refueling process, each pair of sealing electromagnetic structures attracts each other, so that each pair of soft sealing materials wraps the fuel filling port of the container to be injected, so as to achieve the sealing of the fuel filling port of the container to be injected.

[0010] According to an embodiment of the present invention, the sealing and pressure detection module includes: a pressure detection unit, which is arranged on the air collecting hood and is used to detect the pressure value of the air collecting hood during the refueling process.

[0011] According to an embodiment of the present invention, the refueling gun includes: a state detection module, which is used to detect the posture of the refueling gun in real time to generate a posture sensing result, and perform anti-drip oil control according to a posture control instruction.

[0012] According to one embodiment of the present invention, the state detection module includes: a posture sensing unit, which is arranged on the fuel gun body and is used to sense the angle between the extension direction of the fuel gun barrel and the horizontal plane in real time to generate the posture sensing result.

[0013] According to one embodiment of the present invention, the status detection module includes: an anti-drip unit, which is arranged in the refueling pipeline and is used to be opened or closed according to the posture control instruction, wherein when the anti-drip unit is turned on, the refueling gun has the anti-drip capability, and when the anti-drip unit is turned off, the refueling gun does not have the anti-drip capability.

[0014] According to one embodiment of the present invention, the anti-drip oil unit includes: a self-plugging head and an annular anti-drip oil electromagnetic structure, wherein the self-plugging head is a T-shaped structure, which is arranged on the refueling pipeline, and when the annular anti-drip oil electromagnetic structure is adsorbed on or away from the self-plugging head, the anti-drip oil unit is in an open or closed state.

[0015] According to one embodiment of the present invention, the control module includes: a state judgment unit, which determines whether to take anti-drip oil measures based on a preset angle, an angle between an extension direction of the refueling gun barrel and a horizontal plane, so as to generate the posture control instruction.

[0016] According to one embodiment of the present invention, the refueling gun includes: a refueling control module, which is used to detect the liquid level injected into the container during the refueling process to generate a liquid level detection result and perform refueling control according to a refueling control instruction.

[0017] According to one embodiment of the present invention, the refueling control module includes: a liquid level detection unit, which is arranged at the mouth of the refueling gun barrel and is used to detect whether the liquid level injected into the container contacts the liquid level detection unit in the refueling state to generate the liquid level detection result.

[0018] According to one embodiment of the present invention, the liquid level detection unit includes one or two liquid level sensors arranged on the outer wall of the refueling gun barrel, wherein the liquid level sensor is a photoelectric liquid level sensor or a radar sensor.

[0019] According to one embodiment of the present invention, the refueling control module includes: a refueling controller, which is arranged in the refueling pipeline and is used to open or close according to the refueling control instruction, wherein when the refueling controller is turned on, the refueling pipeline is opened, and when the refueling controller is turned off, the refueling pipeline is closed.

[0020] According to one embodiment of the present invention, the refueling controller includes: a refueling electromagnetic structure and a sealing plug, wherein the refueling electromagnetic structure is arranged on the outside of the refueling pipeline, and when the sealing plug is adsorbed on or away from the refueling electromagnetic structure, the refueling controller is in an open or closed state.

[0021] According to one embodiment of the present invention, the control module includes: a refueling judgment unit, which determines whether to end the refueling process based on the liquid level detection result, the state of the refueling machine and the refueling flow rate to generate the refueling control instruction.

[0022] According to one embodiment of the present invention, the refueling gun comprises:

[0023] A battery, which is arranged in the fueling gun body, meets the waterproof and explosion-proof level, and is used to receive wireless charging energy when the fueling gun is idle;

[0024] The flow control module is arranged in the refueling pipeline and is used to collect statistics on the refueling status and refueling flow of the refueling pipeline.

[0025] According to another aspect of the present invention, there is also provided a method for recovering oil vapor, which is performed by a refueling gun as described in any one of the above items, and the method comprises the following steps:

[0026] During the refueling process, the refueling port of the refueling container is sealed by the sealing and pressure detection module, and the pressure value of the gas collecting hood is detected;

[0027] The control module determines whether the injected object is equipped with an on-vehicle refueling gas recovery system based on the pressure value of the gas collecting hood.

[0028] According to one embodiment of the present invention, the following steps are used to determine whether the injected object is equipped with an on-board refueling gas recovery system:

[0029] After receiving the refueling instruction, the refueling port of the refueling container is sealed by the sealing and pressure detection module, and the pressure value of the gas collecting hood is detected;

[0030] When the pressure value of the gas collecting hood is greater than zero, the oil and gas recovery pump is started at a low frequency, and the gas-liquid ratio is calculated through the oiling system;

[0031] When the gas-liquid ratio is greater than the preset value, it indicates that the object being injected is not equipped with an on-board refueling gas recovery system, and the gas recovery pump is started at a high frequency;

[0032] When the gas-liquid ratio is less than or equal to the preset value, it indicates that the currently injected object is equipped with an on-board refueling gas recovery system, and the gas recovery pump is started at a low frequency.

[0033] According to another aspect of the present invention, a storage medium is provided, which contains a series of instructions for executing the method steps as described in any one of the above.

[0034] The present invention provides an electronic oil and gas recovery refueling gun and an oil and gas recovery method, which have the following advantages over the prior art:

[0035] (1) The electronic oil and gas recovery refueling gun provided by the present invention adopts a unique sealing structure, so that the secondary oil and gas recovery of the gas station is carried out in a relatively closed environment, which effectively reduces the intake of air and reduces the problem of excessive discharge caused by air intake of buried oil tanks;

[0036] (2) The electronic oil and gas recovery refueling gun provided by the present invention monitors the pressure change of oil and gas during the oil and gas recovery process by setting a pressure detection unit in the gas collecting hood, thereby performing frequency conversion control on the oil and gas recovery vacuum pump, thereby reducing the number of high-frequency operation of the oil and gas recovery vacuum pump and increasing its service life;

[0037] (3) The electronic oil and gas recovery refueling gun provided by the present invention effectively realizes the communication between the refueling gun, the refueling machine and the online oil and gas recovery system, determines whether the refueling vehicle has ORVR, and reduces the online monitoring system;

[0038] (4) The electronic oil and gas recovery refueling gun provided by the present invention uses a liquid level sensor to detect the liquid level of the injected container. Compared with the traditional mechanical refueling gun, the present invention has a more accurate liquid level detection result for the injected container (such as a car tank), effectively reducing the false alarm of the liquid level of the refueling gun and the start-up error, and can increase the refueling efficiency;

[0039] (5) The electronic oil and gas recovery refueling gun provided by the present invention can monitor the operating status of the refueling gun in real time through the status detection module, effectively avoiding safety accidents caused by damage to the refueling gun;

[0040] (6) The electronic oil and gas recovery refueling gun provided by the present invention can effectively realize the intelligent interconnection between the refueling gun and the refueling machine through the control module, thereby increasing the intelligence level of the refueling system.

[0041] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0043] Figure 1 A schematic diagram of the structure of an electronic oil and gas recovery refueling gun according to an embodiment of the present invention is shown;

[0044] Figure 2 A schematic diagram of the structure of an oil and gas sealing unit according to an embodiment of the present invention is shown;

[0045] Figure 3 A schematic diagram of the structure of a liquid level detection unit according to an embodiment of the present invention is shown;

[0046] Figure 4 A schematic diagram of the structure of an anti-drip oil unit according to an embodiment of the present invention is shown;

[0047] Figure 5 A flow chart showing the steps of an oil and gas recovery method according to an embodiment of the present invention is shown;

[0048] Figure 6 A flowchart of a refueling control method according to an embodiment of the present invention is shown;

[0049] Figure 7 A schematic diagram of the tilt angle of a fuel gun according to an embodiment of the present invention is shown.

[0050] In the accompanying drawings, the same reference numerals are used for the same components. In addition, the accompanying drawings are not drawn according to the actual scale.

[0051] The meanings of the various reference numerals in the accompanying drawings are as follows: 1-the mouth of the refueling gun barrel; 2-the liquid level detection unit; 3-the first liquid level sensor; 4-the second liquid level sensor; 5-the anti-drip oil unit; 6-the self-sealing plug; 7-the annular anti-drip oil electromagnetic structure; 9-the posture sensing unit; 10-the control module; 11-the battery; 12-the refueling electromagnetic structure; 13-the sealing plug; 14-the refueling gun stock; 15-the refueling pipeline inlet; 16-the flow control module; 17-the oil and gas sealing unit; 18-the oil and gas inlet; 19-the pressure detection unit; 20-the first sealing electromagnetic structure; 21-the second sealing electromagnetic structure; 22-the first soft sealing material; 23-the second soft sealing material; 24-the refueling port of the container to be injected; 25-the third sealing electromagnetic structure; 26-the fourth sealing electromagnetic structure. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0053] The prior art (CN113307218A) provides a smart refueling gun, which is used in conjunction with a refueling machine and includes: a driving unit, a sensing unit, a timing unit, a communication unit and a control unit; the control unit controls the working states of the driving unit, the sensing unit, the timing unit and the communication unit; the driving unit controls the oil output speed and / or the oil output amount based on the control of the control unit; the sensing unit senses the use environment of the refueling gun for detection and transmits the sensing result to the control unit; the timing unit times the refueling process and / or the completion of refueling of the refueling gun and transmits the timing result to the control unit; the communication unit communicates with an external terminal through a server based on the control of the control unit. The present invention has a simple structure and can effectively warn of potential safety hazards, facilitate the elimination of potential safety hazards and make countermeasures. In addition, remote management can be achieved, which is convenient for popularization and use.

[0054] However, the above-mentioned prior art does not clarify the specific structure of the gun body and how to implement it, nor does it mention and solve practical problems such as the implementation of the gun jumping structure of the refueling gun, nor does it mention how to keep the refueling port sealed during refueling and how to determine whether the injected object is equipped with an on-board refueling oil and gas recovery system.

[0055] The prior art (CN102020229B) provides a wireless electronic fuel tank lock, a wireless electronic refueling gun and a matching refueling system. The wireless electronic fuel tank lock and the wireless electronic refueling gun are designed using ZigBee technology, WSN technology and embedded system technology. The wireless electronic fuel tank lock used is installed on the fuel tank cover of the vehicle fuel tank. The wireless electronic refueling gun is used on the refueling machine at the existing gas station. A certain number of RFD / FFD nodes are formed with each vehicle and wireless electronic refueling gun as a unit. A guide node is installed at the entrance of the gas station where the electronic refueling gun is installed. A navigation node is installed in the parking lot where the vehicle is equipped with a wireless electronic fuel tank lock. A wireless sensor network is formed with RFD / FFD nodes, navigation nodes, guide nodes and a main controller. The main controller receives RFD / FFD node data, and realizes real-time monitoring and control of the system FFD / RFD nodes according to the instructions issued by the upper computer monitoring platform, thereby realizing remote control of vehicle electronic identity recognition and fuel refueling.

[0056] However, the above-mentioned prior art does not mention the intelligence of the refueling gun, that is, the jumping gun method and related logic of the refueling gun, nor does it mention the self-sealing structure of the refueling gun and the logic of its implementation, nor does it mention how to keep the refueling port sealed during refueling and how to determine whether the injected object is equipped with an on-board refueling oil and gas recovery system.

[0057] The prior art (CN218261970U) provides a state-transmittable refueling gun, which includes: a refueling gun body, which is a vehicle-mounted oil and gas recovery system compatible oil and gas recovery refueling gun structure; a position sensing unit, which is used to measure the working state information of the induction valve in the refueling gun body; a state transmission unit, which has wireless transmission capability, and is used to transmit the working state information of the induction valve to the oil and gas recovery online monitoring system in the gas station to determine whether the current refueling vehicle has a vehicle-mounted oil and gas recovery system. The utility model can measure the state of the gas collecting hood and the identification state of the vehicle-mounted oil and gas recovery system during the refueling process. And it can also be transmitted to the oil and gas recovery online monitoring system in the gas station in a timely manner, so that the working state of the vehicle-mounted oil and gas recovery system compatible oil and gas recovery refueling gun can be diagnosed and analyzed, so that the oil and gas recovery online monitoring system has an intelligent diagnosis function for the vehicle-mounted oil and gas recovery system compatible oil and gas recovery refueling gun.

[0058] However, the above-mentioned prior art has made improvements based on the original mechanical refueling gun, and has not proposed an electronic intelligent refueling gun, nor has it mentioned how to keep the refueling port sealed during the refueling process and how to determine whether the injected object is equipped with an on-board refueling oil and gas recovery system.

[0059] As a common equipment for refueling at gas stations, traditional mechanical refueling guns only have the function of refueling, but do not have the function of detecting the refueling status. In addition, due to its size and mechanical structure, it is difficult to install a status monitoring and transmission system. The present invention provides an electronic oil and gas recovery refueling gun. On the one hand, it seals the refueling port to effectively reduce the intake of air. On the other hand, it monitors the pressure during the recovery process through a pressure sensor to effectively identify whether the vehicle has an on-board oil and gas recovery system, thereby adjusting the operating power of the oil and gas recovery pump and uploading it to the online monitoring system to effectively correct the gas-liquid ratio. By monitoring the pressure during the oil and gas recovery process, the vehicle equipped with on-board oil and gas recovery can be identified, effectively reducing air intake and reducing excessive emissions from buried oil tanks. The electronic oil and gas recovery refueling gun provided by the present invention can effectively monitor and transmit the refueling status, and adopts an electronic structure to effectively control the refueling process, thereby increasing safety during the refueling process.

[0060] Figure 1 A schematic structural diagram of an electronic oil and gas recovery refueling gun according to an embodiment of the present invention is shown.

[0061] An electronic oil and gas recovery refueling gun includes: a sealing and pressure detection module and a control module 10. The sealing and pressure detection module is used to seal the refueling port of the refueling container during the refueling process and detect the pressure value of the gas collecting hood. The control module 10 determines whether the refueling object is equipped with an on-board refueling oil and gas recovery system based on the pressure value of the gas collecting hood.

[0062] In one embodiment, Figure 1 As shown, the sealing and pressure detection module includes: an oil and gas sealing unit 17, which is used to seal the fuel filling port 24 of the container to be injected during the refueling process, wherein the oil and gas sealing unit 17 includes a soft sealing unit and an electromagnetic unit, the soft sealing unit includes a plurality of pairs of soft sealing materials arranged on the air collecting hood, and the electromagnetic unit includes a plurality of pairs of sealing electromagnetic structures arranged on the air collecting hood, and during the refueling process, each pair of sealing electromagnetic structures attracts each other, so that each pair of soft sealing materials wraps the fuel filling port 24 of the container to be injected, so as to achieve the sealing of the fuel filling port 24 of the container to be injected.

[0063] Specifically, if Figure 2 As shown, the soft sealing unit includes a pair of soft sealing materials arranged on the gas collecting hood, namely, a first soft sealing material 22 and a second soft sealing material 23. The electromagnetic unit includes two pairs of sealed electromagnetic structures arranged on the gas collecting hood, namely, a first sealed electromagnetic structure 20 and a second sealed electromagnetic structure 21, and a third sealed electromagnetic structure 25 and a fourth sealed electromagnetic structure 26.

[0064] The oil and gas sealing unit 17 is electromagnetically controlled, the outer gas collecting cover is made of rubber (such as chlorinated polyethylene rubber), and is equipped with four sealing electromagnetic structures, the upper and lower two of which are soft sealing materials (such as nitrile rubber). When the refueling gun is inserted into the car tank and refueling is started, the four sealing electromagnetic structures are started, the first sealing electromagnetic structure 20 and the second sealing electromagnetic structure 21 are attracted to each other, and the third sealing electromagnetic structure 25 and the fourth sealing electromagnetic structure 26 are attracted to each other, so that the first soft sealing material 22 and the second soft sealing material 23 can wrap the tank port 24 to achieve the sealing of the tank port.

[0065] In one embodiment, in order to avoid electromagnetic structure failure, the oil and gas sealing unit 17 adopts a mechanical sealing structure, the gas collecting hood is equipped with a spring, the oil and gas pressure judgment value is changed to -100Pa, and the gas collecting hood is made of chlorinated polyethylene rubber.

[0066] Conventional secondary oil and gas recovery equipment at gas stations cannot seal the refueling port due to the mechanical jump gun structure of the refueling gun. During the operation of the oil and gas recovery system, the oil and gas recovery port is under negative pressure, causing a large amount of air to be drawn from the air collection hood into the buried oil tank, which causes the pressure of the buried oil tank to rise too quickly, resulting in excessive emissions. The electronic oil and gas recovery refueling gun provided by the present invention overcomes the shortcomings of traditional refueling guns, uses an electronic sensor to jump the gun, and can seal the refueling port, thereby isolating the refueling process from the air and effectively reducing air inhalation.

[0067] In one embodiment, Figure 1 As shown, the sealing and pressure detection module includes: a pressure detection unit 19, which is arranged on the gas collecting hood and is used to detect the pressure value of the gas collecting hood during the refueling process. Specifically, the pressure detection unit 19 adopts a pressure sensor.

[0068] For traditional fueling guns, it is impossible to identify whether the object being injected (for example, the refueled vehicle) is equipped with an onboard refueling vapor recovery system (ORVR). The present invention can effectively seal the vehicle refueling port through the oil and gas sealing unit 17, so that a pressure detection unit 19 is set on the gas collecting hood part, and the oil and gas recovery pump is frequency-controlled by the gas collecting hood pressure value monitored by the pressure detection unit 19.

[0069] It should be noted that, in order to adapt to existing refueling machines and vehicles, the overall shape of the gun body of the electronic oil and gas recovery refueling gun provided by the present invention is similar to that of the existing traditional mechanical refueling gun (for example, it has a refueling gun butt 14, etc.), but the present invention makes intelligent improvements on the basis of the traditional mechanical refueling gun. Furthermore, the refueling gun body mentioned in the present invention is the refueling gun body of the traditional mechanical refueling gun after removing the mechanical structure related to the jump gun.

[0070] In one embodiment, Figure 1 As shown, an electronic oil and gas recovery refueling gun includes: a state detection module, which is used to detect the posture of the refueling gun in real time to generate a posture sensing result, and perform anti-drip oil control according to the posture control instruction.

[0071] In one embodiment, Figure 1 As shown, the state detection module includes: a posture sensing unit 9, which is arranged on the fueling gun body and is used to sense the angle between the extension direction of the fueling gun barrel 1 and the horizontal plane in real time to generate a posture sensing result.

[0072] Compared with the traditional mechanical fueling gun, the present invention adds a posture sensing unit 9 to determine the parameters such as the tilt angle of the fueling gun and give a corresponding alarm, thereby effectively reducing the occurrence of safety accidents.

[0073] In one embodiment, Figure 1 As shown, the status detection module includes: an anti-drip unit 5, which is arranged in the refueling pipeline and is used to open or close according to the posture control instruction, wherein when the anti-drip unit 5 is turned on, the refueling gun has the anti-drip capability, and when the anti-drip unit 5 is closed, the refueling gun does not have the anti-drip capability.

[0074] Specifically, Figure 4 It is a cross-sectional view of the anti-drip oil unit 5, which includes: a self-plugging head 6 and an annular anti-drip oil electromagnetic structure 7, wherein the self-plugging head 6 is a T-shaped structure, which is arranged on the refueling pipeline, and when the annular anti-drip oil electromagnetic structure 7 is adsorbed on or away from the self-plugging head 6, the anti-drip oil unit 5 is in an open or closed state.

[0075] Furthermore, the anti-drip unit 5 adopts the design mode of the electromagnetic valve, and determines whether the anti-drip unit 5 is turned on through the data fed back by the attitude sensing unit 9. Specifically, the attitude sensing unit 9 first determines whether the fuel gun is in an upright state, otherwise the communication tanker alarms and displays "the fuel gun is in an abnormal state"; then it determines the angle between the extension direction of the fuel gun nozzle and the horizontal plane, and the angle is greater than the preset angle (for example, 30°), the anti-drip unit 5 is turned on, otherwise the anti-drip unit 5 is closed, effectively preventing oil dripping. Through the induction of the attitude sensing unit 9, the prevention of oil dripping is more accurate, and it is effectively determined whether the fuel gun is in a working state to ensure the safety of the fueling system.

[0076] In one embodiment, the control module 10 includes: a state judgment unit, which determines whether to take anti-drip oil measures based on a preset angle, an angle between an extension direction of the refueling gun nozzle and a horizontal plane, so as to generate a posture control instruction.

[0077] Specifically, the state judgment unit executes the following logic: With the horizontal plane as the reference plane, vertical upward is -90°, and vertical downward is +90°, the anti-drip oil coordinate system is determined. When the angle between the extension direction of the refueling gun barrel and the horizontal plane belongs to [-90°, α1], the attitude control instruction of the anti-drip oil unit 5 in the closed state detection module is generated, where α1 represents the preset angle. When the angle between the extension direction of the refueling gun barrel and the horizontal plane belongs to (α1, +90°], the attitude control instruction of the anti-drip oil unit 5 in the open state detection module is generated.

[0078] In one embodiment, Figure 1 As shown, an electronic oil and gas recovery refueling gun includes: a refueling control module, which is used to detect the liquid level injected into the container during the refueling process to generate a liquid level detection result and perform refueling control according to the refueling control instruction.

[0079] In one embodiment, Figure 1 As shown, the refueling control module includes: a liquid level detection unit 2, which is arranged at the refueling gun barrel 1, and is used to detect whether the liquid level injected into the container (such as a vehicle tank, a container to be refueled) contacts the liquid level detection unit 2 in the refueling state to generate a liquid level detection result.

[0080] Specifically, if Figure 3 As shown, the liquid level detection unit 2 includes one or two liquid level sensors arranged on the outer wall of the refueling gun barrel, wherein the liquid level sensor adopts a photoelectric liquid level sensor or a radar sensor.

[0081] Conventional refueling guns in the prior art use the Venturi effect to detect the refueling liquid level, but the gun often jumps prematurely. To solve this problem, the electronic oil and gas recovery refueling gun provided by the present invention uses a liquid level sensor for detection. When the liquid level detection unit 2 uses a photoelectric liquid level sensor, the photoelectric liquid level sensor is a certain value (for example, a) in the air and another value (for example, b) in gasoline (or diesel). When the liquid level is submerged in the photoelectric liquid level sensor, the transmission signal will have a sudden change (for example, from a to b), thereby realizing refueling liquid level monitoring. Furthermore, the liquid level detection unit 2 can also use a radar liquid level sensor.

[0082] In one embodiment, Figure 3 As shown, the liquid level detection unit 2 includes a liquid level sensor disposed on the outer wall of the fueling gun barrel, for example, only includes the first liquid level sensor 3 or the second liquid level sensor 4. Specifically, the liquid level detection unit 2 uses a single photoelectric liquid level sensor, and the signal value of the sensor in the air is measured as a, and then the signal value of the sensor in 92 gasoline is measured as b. The value b is significantly different from the value a, so it is determined that when the signal value suddenly changes, it is considered that the liquid level is detected.

[0083] Furthermore, in order to prevent a single liquid level sensor from malfunctioning and causing a safety accident, such as Figure 3 As shown, the liquid level detection unit 2 includes two liquid level sensors arranged on the outer wall of the nozzle of the refueling gun, for example, including a first liquid level sensor 3 and a second liquid level sensor 4. In the control logic, a double sensor judgment is added. When both liquid level sensors detect the liquid level, it is determined that the injected container is full of gasoline (or diesel). If only one of the two liquid level sensors detects a signal transition, and the other liquid level sensor does not detect a signal transition, it is considered that the refueling gun is abnormal.

[0084] In one embodiment, the liquid level detection unit 2 uses a photoelectric liquid level sensor and a radar sensor. The photoelectric sensor determines the signal value of the sensor in the air as a, and then determines the signal value of the sensor in 92 gasoline as b. The value b is significantly different from the value a, so it is determined that when the signal value suddenly changes, the liquid level is detected. In order to prevent the liquid level sensor from malfunctioning, a radar sensor is used for auxiliary measurement. The radar sensor determines the liquid level distance as m, and corrects the sensor parameters. It is believed that when the photoelectric liquid level sensor responds, m is zero. The present invention adds a dual sensor judgment. When both sensors detect the liquid level, it is determined that the fuel tank is full. If one of the two sensors detects a signal transition and the other does not, it is considered that the fuel gun is abnormal.

[0085] In one embodiment, the refueling control module includes: a refueling controller, which is arranged in the refueling pipeline and is used to open or close according to the refueling control instruction, wherein when the refueling controller is turned on, the refueling pipeline is opened, and when the refueling controller is turned off, the refueling pipeline is closed.

[0086] Specifically, if Figure 1 As shown, the refueling controller includes: a refueling electromagnetic structure 12 and a sealing plug 13, wherein the refueling electromagnetic structure 12 is arranged on the outside of the refueling pipeline, and when the sealing plug 13 is adsorbed on or away from the refueling electromagnetic structure 12, the refueling controller is in an open or closed state.

[0087] Different from the complicated jump-off gun structure of the conventional refueling gun in the prior art, the present invention adopts electromagnetic jump-off control. When the sealing plug 13 is adsorbed on the refueling electromagnetic structure 12, the refueling controller is in the open state, and the oil can flow from the refueling pipeline inlet 15 to the anti-drip unit 5 along the refueling pipeline. If the anti-drip unit 5 is in the closed state, the oil can continue to flow to the refueling gun barrel 1 through the oil and gas inlet 18, and the refueling gun can refuel the injected container. When the sealing plug 13 is away from the refueling electromagnetic mechanism 12, the refueling controller is in the closed state, and the oil cannot flow from the refueling pipeline inlet 15 to the anti-drip unit 5 along the refueling pipeline, and the refueling gun cannot refuel the injected container.

[0088] In one embodiment, the control module 10 includes: a refueling judgment unit, which determines whether to end the refueling process based on the liquid level detection result, the state of the refueling machine and the refueling flow rate, so as to generate a refueling control instruction.

[0089] Specifically, the refueling judgment unit executes the following logic: when the refueling button on the refueling gun is pressed, it first determines whether the liquid level injected into the container is above the liquid level detection unit 2. If it is below the liquid level, it proves that the oil in the refueling container is full, and the refueling machine stop command is fed back. If it is not above the liquid level, the refueling machine starts; then it determines whether the refueling machine starts normally. If the refueling machine does not start normally, the refueling machine page alarms and displays "refueling machine oil pump failure". If the refueling machine starts normally, the refueling controller of the refueling gun is turned on; then it determines whether the refueling flow is normal. If the refueling flow is abnormal, the refueling machine stops and alarms, and the refueling machine page displays "oil gun failure". If the refueling flow is normal, refueling starts, and then returns to the liquid level detection unit 2. If it is full, the refueling machine stops and the refueling process is completed.

[0090] In one embodiment, the control module 10 includes: a communication unit, which communicates with the fuel dispenser, the sealing and pressure detection module, the state detection module, and the fueling control module.

[0091] Specifically, after the communication unit collects information, it effectively transmits and receives information through the low-power IoT technology ZigBee for the state control of the gas pump. Further, after the communication unit collects information, it effectively transmits and receives information through the low-power IoT technology LoRa for the state control of the gas pump. In one embodiment, after the communication unit collects information, it effectively transmits and receives information through the low-power IoT technology FSK for the state control of the gas pump.

[0092] In the present invention, the control module 10 is the brain of the fuel pump, which collects and processes the status of the fuel pump, such as flow rate, fuel pump posture, receiving and sending fuel dispenser information, etc., to achieve intelligence.

[0093] In one embodiment, Figure 1 As shown, the electronic oil and gas recovery refueling gun provided by the present invention includes: a battery 11, which is arranged in the refueling gun body, meets the waterproof and explosion-proof levels, and is used to receive wireless charging energy when the refueling gun is idle.

[0094] Specifically, the electronic oil and gas recovery refueling gun provided by the present invention is equipped with a rechargeable battery, and the battery compartment has a waterproof level greater than IP68, a battery explosion-proof level greater than ExdⅡBT4, and a wireless charging module is provided at the gun hanging place of the refueling machine to ensure that the refueling gun can be charged when idle, thereby ensuring the effective operation of the refueling gun around the clock.

[0095] Furthermore, the battery 11 uses a lithium battery and is equipped with a wireless charging module. A wireless charger is installed on the fuel dispenser. When the fuel dispenser gun is idle, the fuel dispenser gun is wirelessly charged to ensure real-time monitoring of the fuel dispenser gun.

[0096] In one embodiment, Figure 1 As shown, the electronic oil and gas recovery refueling gun provided by the present invention comprises: a flow control module 16, which is arranged in the refueling pipeline and is used to collect statistics on the refueling status and refueling flow of the refueling pipeline.

[0097] Specifically, the electronic oil and gas recovery refueling gun provided by the present invention is equipped with a flow detection module 16 to perform detailed detection of the refueling status and serve as one of the effective bases for opening or closing the refueling gun.

[0098] Furthermore, the flow control module 16 monitors the refueling flow status, uploads it to the refueling system, compares it with the monitoring data of the flow meter of the refueling machine, and monitors the real-time operating status of the refueling gun.

[0099] In one embodiment, the flow control module 16 is not provided in the fuel gun, and the fuel gun detection data is provided by the fuel dispenser as a condition for determining whether to start the fuel gun.

[0100] The electronic oil and gas recovery refueling gun provided by the present invention uses a liquid level sensor to detect the liquid level of the injected container. Compared with the traditional mechanical refueling gun, the present invention has more accurate liquid level detection results for the injected container (such as a car tank), effectively reduces false alarms of the refueling gun liquid level and start-up errors, and can increase refueling efficiency.

[0101] The electronic oil and gas recovery refueling gun provided by the present invention can monitor the operating status of the refueling gun in real time through the status detection module, effectively avoiding safety accidents caused by damage to the refueling gun.

[0102] The electronic oil and gas recovery refueling gun provided by the present invention can effectively realize the intelligent interconnection between the refueling gun and the refueling machine through the control module 10, thereby increasing the intelligence level of the refueling system.

[0103] The present invention is mainly used in gas station refueling equipment. The present invention realizes the intelligence and risk control level of the refueling process from the refueling terminal, monitors the refueling flow and the real-time status of the refueling gun, and improves the information level of the overall refueling process. The new electronic oil and gas recovery refueling gun provided by the present invention improves the intelligence level of the gas station, lays the foundation for the intelligence of the overall refueling process, and has a good development prospect.

[0104] The present invention is mainly used in gas station refueling equipment. Based on the electronic oil and gas recovery refueling gun, the present invention realizes the closed recovery of oil and gas in the secondary oil and gas recovery process, reduces the excessive intake of air, and reduces the excessive discharge of buried oil tanks; on the other hand, the electronic oil and gas recovery refueling gun communicates with the online monitoring system to determine whether the vehicle is equipped with ORVR, which solves the problem that the current online monitoring system reports an error when refueling an ORVR vehicle, and increases the overall intelligence level of the gas station.

[0105] The novel electronic oil and gas recovery refueling gun provided by the present invention improves the intelligence level of gas stations, lays a foundation for the intelligence of the overall refueling process, and has good development prospects.

[0106] According to another aspect of the present invention, there is also provided an oil and gas recovery method, which is performed by an electronic oil and gas recovery refueling gun. Specifically, during the refueling process, the refueling port of the injected container is sealed by the sealing and pressure detection module, and the pressure value of the gas collecting hood is detected. The control module 10 determines whether the injected object is equipped with an on-board refueling oil and gas recovery system based on the pressure value of the gas collecting hood.

[0107] Figure 5 A flow chart of the steps of an oil and gas recovery method according to an embodiment of the present invention is shown.

[0108] like Figure 5 As shown, in step S501, a refueling instruction is given. Specifically, when the refueling button on the refueling gun is pressed, it indicates that the refueling gun has received a refueling instruction.

[0109] like Figure 5 As shown, in step S502, the oil and gas sealing unit 17 is started. Specifically, after receiving the refueling instruction, the oil and gas sealing unit 17 in the sealing and pressure detection module seals the refueling port 24 of the container to be filled.

[0110] like Figure 5 As shown, in step S503, it is determined whether the pressure value of the gas collecting hood is greater than zero. Specifically, the pressure value of the gas collecting hood is detected by the pressure detection unit 19 in the sealing and pressure detection module. If the judgment result of step S503 is no, then in step S504, the oil and gas recovery pump is stopped. If the judgment result of step S503 is yes, then in step S505, the oil and gas recovery pump is started at a low frequency. Specifically, when the pressure value of the gas collecting hood is greater than zero, the oil and gas recovery pump is started at a low frequency, and the gas-liquid ratio is calculated by the refueling system.

[0111] like Figure 5As shown, in step S506, it is determined whether the gas-liquid ratio is greater than a preset value (eg, 0.9). If the determination result of step S506 is yes, the process proceeds to step S507. If the determination result of step S506 is no, the process proceeds to step S509.

[0112] like Figure 5 As shown, in step S507, the oil vapor recovery pump is started at high frequency and the pressure is maintained at -100 to 0 Pa. In step S508, the online monitoring system is uploaded and displayed as "non-ORVR vehicle".

[0113] like Figure 5 As shown, in step S509, the oil and gas recovery pump is started at a low frequency and maintains a pressure of -100 to 0 Pa. In step S510, the online monitoring system is uploaded and displayed as "ORVR vehicle".

[0114] Specifically, after receiving the refueling instruction, the oil and gas sealing unit 17 starts to seal the automobile refueling port 24. At the same time, the pressure value of the air collecting hood is detected by the pressure detection unit 19. When the pressure is detected to be greater than 0Pa, the oil and gas recovery pump starts at a low frequency, and then the refueling system calculates the gas-liquid ratio. When the gas-liquid ratio is greater than 0.9, it means that the injected object is not equipped with ORVR. The oil and gas recovery pump starts at a high frequency to maintain a slight negative pressure in the air collecting hood, and uploads it to the online monitoring system, showing that this vehicle is a "non-ORVR vehicle"; when the gas-liquid ratio is less than 0.9, the oil and gas recovery pump is kept started at a low frequency to maintain a slight negative pressure in the air collecting hood, and uploads it to the online monitoring system to show that this vehicle is an "ORVR vehicle".

[0115] The electronic oil and gas recovery refueling gun provided by the present invention solves the problem that the online monitoring system of a gas station displays wrong information when the gas-liquid ratio does not meet the standard when refueling an ORVR-equipped vehicle.

[0116] Furthermore, the electronic oil and gas recovery refueling gun provided by the present invention is compatible with the online monitoring system of the gas station and has a communication function. It can more accurately monitor the refueling status through its own sensors and realize dual communication with the refueling machine and the online monitoring system of the gas station. The present invention adopts low-power Internet of Things technology, zigbee, LoRa, etc.

[0117] According to another aspect of the present invention, a refueling state detection method is also provided, comprising: detecting the posture of the refueling gun in real time through a state detection module to generate a posture sensing result, and performing anti-drip oil control according to a posture control instruction. During the refueling process, the liquid level injected into the container is detected through the refueling control module to generate a liquid level detection result, and refueling control is performed according to the refueling control instruction. The control module 10 generates a posture control instruction based on the posture sensing result, and generates a refueling control instruction based on the liquid level detection result.

[0118] Figure 6A flow chart of the steps of a refueling control method according to an embodiment of the present invention is shown.

[0119] In one embodiment, Figure 6 As shown, refueling control is performed through steps S601-S609.

[0120] like Figure 6 As shown, in step S601, a refueling instruction is given. Specifically, when the refueling button on the refueling gun is pressed, it indicates that the refueling gun has received a refueling instruction.

[0121] like Figure 6 As shown, in step S602, it is determined whether the liquid level injected into the container is above the liquid level sensor. Specifically, after receiving the refueling instruction, it is determined whether the liquid level injected into the container is above the liquid level sensor in the refueling control module. In one embodiment, the liquid level sensor uses a photoelectric liquid level sensor, and the signal value of the sensor in the air is measured as a, and then the signal value of the sensor in 92 gasoline is measured as b. The value b is significantly different from the value a, so it is determined that when the signal value suddenly changes, it is considered that the liquid level is detected.

[0122] like Figure 6 As shown, if the judgment result of step S602 is yes, it proves that the oil in the refueling container is full, then the process proceeds to step S603 to generate a fuel dispenser stop instruction. If the judgment result of step S602 is no, then the process proceeds to step S604 to generate a fuel dispenser start instruction.

[0123] like Figure 6 As shown, in step S605, it is determined whether the fuel dispenser is started normally. If the judgment result of step S605 is no, then the process proceeds to step S606, and a fuel dispenser alarm instruction is generated, that is, the fuel dispenser is not started normally, and the fuel dispenser page alarms and displays "fuel dispenser oil pump failure". If the judgment result of step S605 is yes, then the process proceeds to step S607, and a refueling control instruction for turning on the refueling controller in the refueling control module is generated, that is, if the fuel dispenser is started normally, the refueling controller of the fuel gun is turned on.

[0124] like Figure 6 As shown, in step S608, it is determined whether the refueling flow is normal. If the determination result of step S608 is no, then in step S609, a fuel dispenser stop and alarm instruction is generated, that is, if the refueling flow is abnormal, the fuel dispenser stops and alarms, and the fuel dispenser page displays "fuel gun failure". If the determination result of step S608 is yes, then it returns to step S602 to determine whether the liquid level injected into the container is above the liquid level sensor in the refueling control module.

[0125] Figure 7 A schematic diagram of the tilt angle of a fuel gun according to an embodiment of the present invention is shown.

[0126] In one embodiment, Figure 7 As shown, the anti-drip oil control is performed through the following steps: Taking the horizontal plane as the reference plane, vertically upward is -90°, and vertically downward is +90°, determine the anti-drip oil coordinate system. When the angle between the extension direction of the refueling gun barrel and the horizontal plane belongs to [-90°, α1], the attitude control instruction of the anti-drip oil unit in the closed state detection module is generated, where α1 represents a preset angle, such as 30°. When the angle between the extension direction of the refueling gun barrel and the horizontal plane belongs to (α1, +90°], the attitude control instruction of the anti-drip oil unit in the open state detection module is generated.

[0127] Specifically, whether to take anti-drip oil measures is determined based on the inclination angle of the gun body. The horizontal muzzle outlet is taken as the zero point, the downward inclination angle is α, and the upward inclination angle is -α. Figure 7 As shown, the specific position information calibrates the posture sensing unit 9. When α>30°, the anti-drip oil unit 5 is turned on, and when α≤30°, the anti-drip oil unit 5 is turned off.

[0128] Furthermore, for special working conditions, the fueling gun is provided with a physical solenoid valve switch lock, which is turned on by default in normal working conditions, and the physical solenoid valve relies on the posture sensing unit 9 for automatic switch control. In special working conditions, the physical solenoid valve switch lock is closed, and the physical solenoid valve is always in the open state, which is suitable for refueling at any angle. The posture sensing unit 9 is calibrated with the muzzle horizontal zero point. If an abnormal state occurs, it is considered that the fueling gun has slipped.

[0129] The electronic oil and gas recovery refueling gun and oil and gas recovery method provided by the present invention can also be used in conjunction with a computer-readable storage medium, on which a computer program is stored. The computer program is executed to run an oil and gas recovery method and a refueling status detection method.

[0130] A computer program can run computer instructions, which include computer program code. The computer program code may be in source code form, object code form, executable file, or some intermediate form.

[0131] Computer-readable storage media may include: any entity or device that can carry computer program code, recording media, USB flash drives, mobile hard disks, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0132] It should be noted that the content contained in computer-readable storage media can be appropriately increased or decreased based on the requirements of legislation and patent practices in the jurisdiction. For example, in some jurisdictions, based on legislation and patent practices, computer-readable storage media do not include electrical carrier signals and telecommunications signals.

[0133] In one embodiment, a traditional mechanical refueling gun is used for comparison. Under normal working conditions, the traditional mechanical refueling gun cannot identify the vehicle type and cannot control the frequency of the vacuum pump. With an ordinary gas collecting hood, the pressure sensor cannot determine the oil and gas status. Under the simulated working conditions, the pressure increase of the buried oil tank is reduced under the same time and the same working conditions for the electronic oil and gas recovery refueling gun provided by the present invention. Due to the oil and gas sealing unit 17, the present invention can seal the refueling port 24 to further determine whether the injected object is equipped with a vehicle-mounted refueling oil and gas recovery system through the gas collecting hood pressure value.

[0134] In summary, the present invention provides an electronic oil and gas recovery refueling gun and an oil and gas recovery method, which have the following advantages compared with the prior art:

[0135] (1) The electronic oil and gas recovery refueling gun provided by the present invention adopts a unique sealing structure, so that the secondary oil and gas recovery of the gas station is carried out in a relatively closed environment, which effectively reduces the intake of air and reduces the problem of excessive discharge caused by air intake of buried oil tanks;

[0136] (2) The electronic oil and gas recovery refueling gun provided by the present invention monitors the pressure change of oil and gas during the oil and gas recovery process by setting a pressure detection unit in the gas collecting hood, thereby performing frequency conversion control on the oil and gas recovery vacuum pump, thereby reducing the number of high-frequency operation of the oil and gas recovery vacuum pump and increasing its service life;

[0137] (3) The electronic oil and gas recovery refueling gun provided by the present invention effectively realizes the communication between the refueling gun, the refueling machine and the online oil and gas recovery system, determines whether the refueling vehicle has ORVR, and reduces the online monitoring system;

[0138] (4) The electronic oil and gas recovery refueling gun provided by the present invention uses a liquid level sensor to detect the liquid level of the injected container. Compared with the traditional mechanical refueling gun, the present invention has a more accurate liquid level detection result for the injected container (such as a car tank), effectively reducing the false alarm of the liquid level of the refueling gun and the start-up error, and can increase the refueling efficiency;

[0139] (5) The electronic oil and gas recovery refueling gun provided by the present invention can monitor the operating status of the refueling gun in real time through the status detection module, effectively avoiding safety accidents caused by damage to the refueling gun;

[0140] (6) The electronic oil and gas recovery refueling gun provided by the present invention can effectively realize the intelligent interconnection between the refueling gun and the refueling machine through the control module, thereby increasing the intelligence level of the refueling system.

[0141] It should be understood that the embodiments disclosed in the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should be extended to equivalent substitutions of these features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0142] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0143] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0144] Certain terms are used throughout this application document to indicate specific system components. As those skilled in the art will recognize, different names can usually be used to indicate the same components, so this application document is not intended to distinguish those components that are only different in name but not in function. In this application document, the terms "comprise", "include" and "have" are used in an open form, and therefore should be interpreted as meaning "including but not limited to...". In addition, the terms "substantially", "substantially" or "approximately" that may be used in this article relate to the tolerances of the corresponding terms accepted by the industry. The term "coupling" as may be used in this article includes direct coupling and indirect coupling via other components, elements, circuits, or modules, wherein for indirect coupling, the components, elements, circuits, or modules between them do not change the information of the signal but can adjust its current level, voltage level, and / or power level. Inferred coupling (for example, one of the elements is coupled to another element by inference) includes direct and indirect coupling between two elements in the same way as "coupling".

[0145] The "one embodiment" or "embodiment" mentioned in the specification means that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0146] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0147] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. An electronic oil and gas recovery refueling gun, characterized in that: The refueling gun comprises: A sealing and pressure detection module, which is used to seal the refueling port of the container being filled during the refueling process and detect the pressure value of the gas collecting hood; The control module determines whether the injected object is equipped with an on-vehicle refueling gas recovery system based on the pressure value of the gas collecting hood.

2. The electronic oil and gas recovery refueling gun according to claim 1, characterized in that: The sealing and pressure detection module includes: an oil and gas sealing unit, which is used to seal the fuel filling port of the container being injected during the refueling process, wherein the oil and gas sealing unit includes a soft sealing unit and an electromagnetic unit, the soft sealing unit includes a plurality of pairs of soft sealing materials arranged on the air collecting hood, and the electromagnetic unit includes a plurality of pairs of sealing electromagnetic structures arranged on the air collecting hood, and during the refueling process, each pair of sealing electromagnetic structures attracts each other, so that each pair of soft sealing materials wraps the fuel filling port of the container being injected, so as to achieve the sealing of the fuel filling port of the container being injected.

3. An electronic oil and gas recovery refueling gun as claimed in claim 1 or 2, characterized in that: The sealing and pressure detection module comprises: a pressure detection unit, which is arranged on the gas collecting hood and is used to detect the pressure value of the gas collecting hood during the refueling process.

4. An electronic oil and gas recovery refueling gun according to any one of claims 1 to 3, characterized in that: The refueling gun comprises: a state detection module, which is used to detect the posture of the refueling gun in real time to generate a posture sensing result, and perform anti-drip oil control according to a posture control instruction.

5. The electronic oil and gas recovery refueling gun according to claim 4, characterized in that: The state detection module includes: a posture sensing unit, which is arranged on the fueling gun body and is used to sense the angle between the extending direction of the fueling gun barrel and the horizontal plane in real time to generate the posture sensing result.

6. An electronic oil and gas recovery refueling gun as claimed in claim 4 or 5, characterized in that: The state detection module includes: an anti-drip unit, which is arranged in the refueling pipeline and is used to be opened or closed according to the posture control instruction, wherein when the anti-drip unit is turned on, the refueling gun has the anti-drip capability, and when the anti-drip unit is turned off, the refueling gun does not have the anti-drip capability.

7. The electronic oil and gas recovery refueling gun according to claim 6, characterized in that: The anti-drip oil unit includes: a self-plugging head and an annular anti-drip oil electromagnetic structure, wherein the self-plugging head is a T-shaped structure, which is arranged on the refueling pipeline, and when the annular anti-drip oil electromagnetic structure is adsorbed on or away from the self-plugging head, the anti-drip oil unit is in an open or closed state.

8. An electronic oil and gas recovery refueling gun as claimed in any one of claims 5 to 7, characterized in that: The control module includes: a state judgment unit, which determines whether to take anti-drip oil measures based on a preset angle, an angle between an extension direction of a refueling gun nozzle and a horizontal plane, so as to generate the posture control instruction.

9. An electronic oil and gas recovery refueling gun according to any one of claims 1 to 8, characterized in that: The refueling gun comprises: a refueling control module, which is used to detect the liquid level injected into the container during the refueling process to generate a liquid level detection result and perform refueling control according to a refueling control instruction.

10. The electronic oil and gas recovery refueling gun according to claim 9, characterized in that: The refueling control module comprises: a liquid level detection unit, which is arranged at the mouth of the refueling gun barrel and is used to detect whether the liquid level injected into the container contacts the liquid level detection unit in the refueling state, so as to generate the liquid level detection result.

11. The electronic oil and gas recovery refueling gun according to claim 10, characterized in that: The liquid level detection unit includes one or two liquid level sensors arranged on the outer wall of the refueling gun barrel, wherein the liquid level sensor is a photoelectric liquid level sensor or a radar sensor.

12. An electronic oil and gas recovery refueling gun according to any one of claims 9 to 11, characterized in that: The refueling control module includes: a refueling controller, which is arranged in the refueling pipeline and is used to open or close according to the refueling control instruction, wherein when the refueling controller is turned on, the refueling pipeline is opened, and when the refueling controller is turned off, the refueling pipeline is closed.

13. The electronic oil and gas recovery refueling gun according to claim 12, characterized in that: The refueling controller includes: a refueling electromagnetic structure and a sealing plug, wherein the refueling electromagnetic structure is arranged outside the refueling pipeline, and when the sealing plug is adsorbed on or away from the refueling electromagnetic structure, the refueling controller is in an open or closed state.

14. An electronic oil and gas recovery refueling gun according to any one of claims 9 to 13, characterized in that: The control module includes: a refueling judgment unit, which determines whether to end the refueling process based on the liquid level detection result, the state of the refueling machine and the refueling flow rate, so as to generate the refueling control instruction.

15. An electronic oil and gas recovery refueling gun according to any one of claims 1 to 14, characterized in that: The refueling gun comprises: A battery, which is arranged in the fueling gun body, meets the waterproof and explosion-proof level, and is used to receive wireless charging energy when the fueling gun is idle; The flow control module is arranged in the refueling pipeline and is used to collect statistics on the refueling status and refueling flow of the refueling pipeline.

16. An oil and gas recovery method, characterized in that: The method is performed by a refueling gun as claimed in any one of claims 1 to 15, comprising the following steps: During the refueling process, the refueling port of the refueling container is sealed by the sealing and pressure detection module, and the pressure value of the gas collecting hood is detected; The control module determines whether the injected object is equipped with an on-vehicle refueling gas recovery system based on the pressure value of the gas collecting hood.

17. The oil gas recovery method according to claim 16, characterized in that: Use the following steps to determine whether the injected object is equipped with an on-board refueling gas recovery system: After receiving the refueling instruction, the refueling port of the refueling container is sealed by the sealing and pressure detection module, and the pressure value of the gas collecting hood is detected; When the pressure value of the gas collecting hood is greater than zero, the oil and gas recovery pump is started at a low frequency, and the gas-liquid ratio is calculated through the oiling system; When the gas-liquid ratio is greater than the preset value, it indicates that the object being injected is not equipped with an on-board refueling gas recovery system, and the gas recovery pump is started at a high frequency; When the gas-liquid ratio is less than or equal to the preset value, it indicates that the currently injected object is equipped with an on-board refueling gas recovery system, and the gas recovery pump is started at a low frequency.

18. A storage medium, characterized in that: It contains a series of instructions for executing the method steps as claimed in any one of claims 16-17.

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