A device for detecting the gas-liquid ratio of a fuel dispenser

Abstract

The application discloses a kind of detection devices of gas-liquid ratio of oil gun, the detection device includes: shell, oil tank, core mainboard, detection component, display screen and battery module;The top of the shell is provided with oil inlet;The bottom of the oil tank is provided with oil pipe, and the end of the oil pipe is provided with the oil gun of the detection device;The detection component includes oil gas flowmeter, oil liquid flowmeter;The processor on the core mainboard is used to process the oiling amount detected by the oil liquid flowmeter and the oil gas recovery amount detected by the oil gas flowmeter, to obtain the processing result.The application is adapted to the structure of fuel dispenser and fuel vehicle compartment, and realizes online detection while fueling.The application has the advantages of reasonable design, high intelligence, high measurement accuracy, reliable and stable work, high safety, complete applicability to explosive hazard occasions, convenient and flexible operation, better realization of industry regulation requirements, and good application and promotion value.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, and more specifically, to a device for detecting the gas-liquid ratio of a refueling nozzle. Background Technology

[0002] In recent years, with the development and changes in the economy and environment, relevant departments have formulated standards for oil and gas emissions from oil transportation, and made requirements for the maximum permissible error during refueling and oil and gas recovery processes, as well as for the control, monitoring and supervision of oil and gas emissions.

[0003] Existing methods for verifying refueling volume use a standard metal measuring instrument. Gasoline is injected into the instrument through the fuel nozzle, and the actual amount dispensed is manually compared to the reading on the fuel dispenser to determine the refueling error. After measurement, the gasoline in the measuring instrument is returned to the gas station's storage tank. Existing methods for verifying vapor recovery volume use a vapor recovery detector. The detector's inlet is fitted over the fuel nozzle's nozzle, while the outlet is exposed to the atmosphere. During testing, fuel is dispensed into the container through the fuel nozzle. After dispensing, the refueling data displayed on the fuel dispenser is entered into the vapor recovery detector and compared with the vapor recovery data detected by the detector to determine the vapor-liquid ratio. After measurement, the fuel in the container is returned to the gas station's storage tank.

[0004] Existing methods for detecting refueling volume and gas return volume both require manual observation and data input. This method is prone to human error and operational errors. Furthermore, since the tank area and refueling area belong to two separate zones during gasoline return, there are safety hazards during transportation. Summary of the Invention

[0005] The problem solved by this invention is how to achieve accurate online detection of the gas-liquid ratio in refueling nozzles.

[0006] To address the above problems, the present invention provides a device for detecting the gas-liquid ratio of a refueling nozzle, the device comprising:

[0007] The system comprises a housing, an oil tank, a core motherboard, a detection component, a display screen, and a battery module, wherein the oil tank, the core motherboard, the detection component, and the battery module are disposed inside the housing.

[0008] The top of the housing is provided with a filling port, which is used to insert the filling nozzle of the fuel dispenser, so that the oil flows from the fuel dispenser through the filling port to the oil storage tank.

[0009] The bottom of the fuel tank is provided with a refueling pipe, and the end of the refueling pipe is provided with the refueling nozzle of the detection device. The refueling nozzle of the detection device is used to extend into the fuel tank of the fuel vehicle.

[0010] The detection components include an oil and gas flow meter and an oil flow meter. The oil flow meter is installed on the refueling pipe to detect the amount of refueling, and the oil and gas flow meter is installed at the refueling port to detect the amount of oil and gas recovered.

[0011] The processor on the core motherboard is used to process the amount of refueling detected by the oil flow meter and the amount of oil and gas recovery detected by the oil and gas flow meter to obtain the processing result, which includes the gas-liquid ratio during the refueling process of the refueling nozzle.

[0012] The display screen is mounted on the housing wall and is used to display the processing results.

[0013] The core motherboard is electrically connected to the battery module and is used to charge the battery module. The battery module supplies power to the core motherboard, the display screen, and the detection components.

[0014] Optionally, the gas-liquid ratio detection device for refueling nozzles provided by the present invention further includes a safety barrier disposed within the housing, wherein the core motherboard is electrically connected to the safety zone of the safety barrier, and the probe of the detection component is electrically connected to the danger zone of the safety barrier.

[0015] Optionally, the gas-liquid ratio detection device for refueling nozzles provided by the present invention further includes a battery protection module, which is electrically connected to the battery assembly.

[0016] Optionally, the gas-liquid ratio detection device for refueling nozzles provided by the present invention further includes a communication interface board, wherein the communication signal line of the core motherboard is connected to the communication signal line of the communication interface board.

[0017] Optionally, the gas-liquid ratio detection device for refueling nozzles provided by the present invention further includes a temperature sensor and a pressure sensor, which are disposed inside the housing and are used to detect the temperature and pressure inside the housing.

[0018] Optionally, in the gas-liquid ratio detection device for refueling nozzles provided by the present invention, the processor processes the refueling amount detected by the oil flow meter and the oil-gas recovery amount detected by the oil-gas flow meter through a pre-configured processing model.

[0019] Optionally, in the gas-liquid ratio detection device for refueling nozzles provided by the present invention, an observation port is provided at the corresponding position of the oil storage tank of the housing.

[0020] Optionally, the gas-liquid ratio detection device for refueling nozzles provided by the present invention further includes a bracket for fixing the housing.

[0021] Optionally, in the gas-liquid ratio detection device for a refueling nozzle provided by the present invention, a sealing ring is provided at the refueling port position, and the sealing ring is used to fasten the refueling nozzle.

[0022] Optionally, in the gas-liquid ratio detection device for refueling nozzles provided by the present invention, the housing is an explosion-proof housing.

[0023] The present invention provides a gas-liquid ratio detection device for fuel dispensers. This device eliminates the need for gasoline to return to the tank. It comprises a housing, an internal fuel tank, and a core motherboard. During gas-liquid ratio detection, the fuel dispenser inserts the fuel nozzle into the filling port of the detection device's housing. A structure identical to the fuel nozzle and filling pipe is located at the bottom of the housing, allowing the fuel nozzle to extend into the fuel tank of the vehicle. This ensures that during measurement, fuel flows from the fuel dispenser, through the filling pipe and nozzle, and then through the filling port, fuel tank, filling pipe, and nozzle of the detection device, ultimately reaching the fuel tank. Simultaneously, a gas flow meter and a liquid flow meter measure the amount of fuel dispensed and the amount of gas returned. These measurements are transmitted to the core motherboard, where a processor processes the data to accurately detect the gas-liquid ratio of the fuel dispenser.

[0024] The gas-liquid detection device for refueling nozzles provided by this invention is reasonably designed, highly intelligent, highly accurate in measurement, reliable and stable in operation, and highly safe. As an inspection device, it is fully applicable to hazardous explosion environments, is convenient and flexible in operation, and can better meet the requirements of industry regulations, thus having great application and promotion value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a gas-liquid ratio detection device for a refueling nozzle according to some embodiments of the present invention;

[0026] Figure 2 This is a schematic diagram of the electrical structure of a gas-liquid ratio detection device for a refueling nozzle according to some embodiments of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Housing, 101-Fuel inlet, 102-Observation port, 2-Fuel tank, 3-Core motherboard, 41-Oil / gas flow meter, 42-Fuel flow meter, 43-Temperature sensor, 44-Pressure sensor, 5-Display screen, 6-Battery module, 61-Battery protection module, 7-Fuel nozzle of the detection device, 8-Fuel pipe of the detection device, 9-Fuel tank, 10-Safety barrier, 11-Bracket, 12-Fuel dispenser, 121-Fuel nozzle of the fuel dispenser, 122-Fuel pipe of the fuel dispenser. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It is understood that this invention addresses the problems of human error, operational error, and secondary environmental pollution and safety hazards caused during the detection of the ratio of return gas volume to refueling volume, i.e., the gas-liquid ratio. By setting up a fully online gas-liquid ratio calibration device for refueling nozzles, this invention measures the refueling volume and return gas volume of the refueling machine during refueling, transmits the data to the explosion-proof area of ​​the housing, uses a lithium battery to power the flow meter, and provides human-computer interaction, AI data calculation, data storage, data display, and one-click data calibration functions.

[0032] In this invention, to improve the accuracy and efficiency of fuel quantity and gas return detection, and to achieve online detection of fuel quantity and gas return during the fuel dispenser refueling process, a device compatible with the fuel dispenser nozzle and the fuel tank of a gasoline vehicle is installed. This device eliminates the need for gasoline to return to the tank. During the refueling process, due to the mechanical connection between the fuel dispenser nozzle and the detection device, the liquid fuel and vapor fuel are transmitted through the detection device to the fuel tank and vapor fuel recovery pipeline of the gasoline vehicle, respectively. During this transmission, the fuel quantity and gas return data are measured, and temperature and pressure data are collected and transmitted to the processor in the device. Finally, the algorithm configured in the processor is used to eliminate error values, and the detection and calibration function of the ratio of fuel quantity and gas return is achieved based on data comparison.

[0033] To better understand the gas-liquid ratio detection device for refueling nozzles provided in this embodiment of the invention, the following detailed description is provided with reference to the accompanying drawings.

[0034] Figure 1 The figure shows a schematic diagram of the gas-liquid ratio detection device for a refueling nozzle provided in an embodiment of the present invention. As shown in the figure, the detection device specifically includes:

[0035] The housing 1, oil tank 2, core motherboard 3, detection components, display screen 5, and battery module 6 are located inside the housing 1.

[0036] A filling port 101 is provided on the top of the housing 1. The filling port 101 is used to insert the filling nozzle 121 of the fuel dispenser 12, so that after the oil flows out of the fuel dispenser 12, it passes through the filling pipe 122 of the fuel dispenser 12 and then flows through the filling port 101 to the oil storage tank 2.

[0037] A refueling pipe 8 is provided at the bottom of the fuel tank 2. The end of the refueling pipe 8 of the detection device is provided with the refueling gun 7 of the detection device. The refueling gun 7 of the detection device can be inserted into the fuel tank 9 of the fuel vehicle to transport the fuel in the fuel tank 2 to the fuel tank 9 of the fuel vehicle through the refueling pipe 8 of the detection device.

[0038] The detection component 4 includes an oil and gas flow meter 41 and an oil flow meter 42. The oil flow meter 42 is installed on the refueling pipe 8 and is used to detect the amount of refueling. The oil and gas flow meter 41 is installed at the refueling port 101 and is used to detect the amount of oil and gas recovered.

[0039] The processor on the core motherboard 3 is used to process the amount of refueling detected by the oil flow meter 42 and the amount of oil and gas recovery detected by the oil and gas flow meter 41, and obtain the processing results, which include the gas-liquid ratio during the refueling process of the refueling nozzle.

[0040] The display screen 5 is mounted on the wall of the housing 1 and is used to display the processing results.

[0041] The core motherboard 3 is electrically connected to the battery module 6 and is used to charge the battery module 6. The battery module 6 supplies power to the core motherboard 3, the display screen 5 and the detection component 4.

[0042] Specifically, such as Figure 1 As shown, in some embodiments, the detection device may include a mechanical part, a detection part, and an electrical part. Specifically, the mechanical part may include a housing 1, a filler neck 101, a reservoir 2, a filler pipe 8, and a filler nozzle 7. The housing 1 may be an explosion-proof housing.

[0043] In some embodiments, for ease of use, an observation port 102 can be provided at the corresponding position of the oil tank in the housing 1, so that the operator can observe the position of the oil level inside the oil tank through the observation port during the actual testing process.

[0044] In other embodiments, to improve the detection accuracy of the detection device, such as Figure 1 As shown, a sealing ring can be installed at the filling port 101. This sealing ring can secure the filling nozzle 121 of the fuel dispenser 12, keeping the fuel tank in a sealed state.

[0045] In other embodiments, in order to adapt the detection device to the fuel dispenser 12 and ensure the accuracy of the detection, the fuel nozzle 7 of the detection device can be made to be the same size as the fuel nozzle 121 inherently configured in the fuel dispenser 12.

[0046] In other embodiments, a support 11 may be provided for ease of use, so that the housing can be placed on the support during use to achieve stability of the entire structure.

[0047] The support structure can specifically include multiple sets, such as three sets of support structures.

[0048] In other embodiments, the detection portion, i.e. the detection component, may include a head comprising two flow meters, a temperature sensor 43, and a pressure sensor 44.

[0049] The flow meter for collecting refueling volume is fixed to the refueling pipe and can be installed using a DN25 thread. The flow meter for collecting return gas volume is a rotary flow meter with a nested sealing ring, fixed to the refueling port of the fuel dispenser's online vapor-liquid ratio calibration device. The temperature and pressure sensors are fixed to the bottom of the explosion-proof housing.

[0050] like Figure 2 As shown, the electrical components may include: a core motherboard 3, a communication interface board, a safety barrier 10, a battery protection module 61, a display screen 5, and a battery module 6.

[0051] The core motherboard 3 is connected to the display screen 5, the communication interface board, the safety barrier 10, and the battery protection module 61, respectively.

[0052] Specifically, the connection between the core motherboard 3 and the communication interface board—that is, the connection between the communication signal lines of the core motherboard 3 and the communication signal lines of the communication interface board—can be achieved using serial communication, as there are no requirements for transmission speed. The core motherboard provides power to the communication interface board.

[0053] The core motherboard 3 is connected to the safety barrier 10 and the detector head, meaning the core motherboard 3 is connected to the safe area of ​​the safety barrier 10, and the detector head is connected to the dangerous area of ​​the safety barrier 10. The core motherboard 3 supplies power to the detector through the safety barrier 10, and the detector's sampling data is transmitted back to the core motherboard 3 through the safety barrier 10.

[0054] The core motherboard 3 is connected to the battery protection module 61 and the battery module 6. Specifically, the core motherboard 3 is connected to the power supply port of the battery protection module 61 to collect the battery voltage and charge the battery module 6 through the battery protection module 61. The battery module 6 supplies power to the core motherboard 3 and the entire system through the battery protection module 61.

[0055] Among them, the core motherboard 3 can adopt a double-layer board design made of FPR-4 material, use microprocessor, operational amplifier and other chips, and have designs such as serial screen communication, data upload, pulse counting and sampling.

[0056] Safety barrier 10 can be AQN-20 series, battery protection module 61 can be BA_Pr_XX_10A, display screen can be DC80480M070_2111_0T, and battery module 6 can be lithium battery DRL-12V.

[0057] The oil flow detection head, i.e. the detection probe of the oil flow meter 42, includes a turbine flow magnetic field coil and a signal receiver.

[0058] The oil and gas flow detection head, namely the detection probe of the oil flow meter 42, includes a rotary wheel, a transmission mechanism, and a signal receiver.

[0059] Temperature probe, including DS18B20 probe and signal receiving circuit board. Pressure probe, including diffused silicon probe and signal receiver.

[0060] It is understood that the detection device provided in this embodiment of the invention, through a self-developed mechanical structure, inserts the refueling nozzle into the refueling port of the online gas-liquid ratio calibration device. The bottom end has the same structure as the refueling nozzle and refueling pipe, ensuring that all the fuel can be transferred to the fuel tank of the vehicle during the measurement process. A turbine flow meter and a mass flow meter are used to measure the refueling volume and return gas volume. Temperature and pressure sensors are used to measure the current ambient temperature and gas pressure. The data processing section uses an explosion-proof housing equipped with a lithium battery for power supply and features a serial port display.

[0061] In practice, such as Figure 1 As shown, in actual use, the fuel nozzle 121 of the fuel dispenser 12 is fitted onto the fuel inlet 101 of the fuel dispenser's vapor-liquid ratio detection device. That is, when refueling, the fuel nozzle 121 of the fuel dispenser 12 is inserted into the fuel inlet 101 of the fuel dispenser's vapor-liquid ratio detection device, and the fuel nozzle 7 of the fuel dispenser's vapor-liquid ratio detection device is inserted into the fuel tank 9 of the fuel vehicle.

[0062] Turn on the switch of the fuel nozzle 121 of the fuel dispenser 12, and the fuel nozzle 121 of the fuel dispenser 12 will start to refuel. During the refueling process, the oil flows into the oil storage tank 2. Through the internal pressure of the oil storage tank 2 and the gravity caused by the height difference, the oil is pushed into the fuel tank 9 of the fuel vehicle.

[0063] During this process, the amount of refueling and the amount of oil and gas recovery are collected by the oil flow meter 42 and the oil and gas flow meter 41. The data is then uploaded to the core motherboard 3 via the safety barrier 10. After the processor on the core motherboard 3 processes the data, the refueling amount, gas recovery amount, and gas-liquid ratio parameters are displayed on the display screen 5.

[0064] Optionally, in order to improve the functionality of the detection device provided in some embodiments of the present invention, a calibration function may also be set, such as a one-click calibration function, so as to further calibrate the gas-liquid ratio based on the accurate detection of the gas-liquid ratio.

[0065] When the operator touches the calibration function key, the calibration process can be started, which transmits the detected gas-liquid ratio data to the set calibration system, so that the calibration system can perform calibration based on the received gas-liquid ratio data.

[0066] To better understand how this testing device detects the gas-liquid ratio at the refueling nozzle, the following details the testing process:

[0067] First, open the gas-liquid ratio detection device bracket on the fuel nozzle;

[0068] The second step is to turn on the power switch of the fuel nozzle vapor-liquid ratio detection device.

[0069] The third step is to insert the fuel nozzle of the fuel dispenser into the fuel inlet of the fuel nozzle vapor-liquid ratio detection device;

[0070] The fourth step is to insert the fuel nozzle of the fuel nozzle gas-liquid ratio detection device into the fuel tank opening of the fuel vehicle.

[0071] Step 5: Press the fuel nozzle switch on the fuel dispenser to start refueling;

[0072] Step 6: When refueling, the oil flows from the nozzle outlet of the fuel dispenser into the oil tank of the fuel dispenser's vapor-liquid ratio detector.

[0073] Step 7: The fuel in the reservoir is transferred to the fuel tank of the gasoline vehicle through the fuel pipe of the fuel nozzle vapor-liquid ratio detection device and the fuel nozzle.

[0074] Step 8: During the refueling process, the fuel dispenser's nozzle draws in the vapors, causing the vapor flow meter to count the vapors.

[0075] Step 9: During the refueling process, the oil flow meter counts the fluid levels.

[0076] Step 10: After refueling is completed, the core motherboard converts the refueling volume and return gas volume data and calculates the ratio of return gas volume to refueling volume (i.e., the gas-liquid ratio).

[0077] Step 11: Remove the fuel nozzle from the fuel tank of a gasoline-powered vehicle;

[0078] Step 12: Remove the fuel nozzle from the fuel nozzle's vapor-liquid ratio detection device inlet;

[0079] Step 13: Insert the fuel nozzle of the gas-liquid ratio detection device into the fuel inlet.

[0080] Step 14: After the calculation is complete, transfer the data to the display screen;

[0081] Step 15: If data calibration is required, connect to the data upload interface of the online oil and gas recovery monitoring device through the communication interface, press the calibration button on the display screen, upload the data, and calibrate the refueling amount and return gas amount.

[0082] Step 16: After the measurement is complete, turn off the switch and put away the bracket.

[0083] It is understood that the detection device provided in this embodiment of the invention, in order to improve the accuracy and efficiency of refueling volume and return gas volume detection, and to realize online detection of refueling volume and return gas volume during the refueling process, sets up a gasoline return-to-tank detection device. This device includes a housing, an internal oil storage tank, and a core mainboard. When performing gas-liquid ratio detection, the refueling nozzle is inserted into the refueling port of the detection device housing. Furthermore, the bottom of the housing has a structure identical to that of the refueling nozzle and refueling pipe. The fuel nozzle of the detection device extends into the fuel tank of a gasoline vehicle, allowing fuel to flow from the fuel dispenser, through the dispenser's hose and nozzle, and then through the detection device's inlet, reservoir, hose, and nozzle, ultimately reaching the vehicle's fuel tank. Simultaneously, the device uses a vapor flow meter and a liquid flow meter to measure the amount of fuel dispensed and the amount of vapor returned. These measurements are transmitted to the core motherboard of the detection device. Finally, the processor on the motherboard processes the data to determine the ratio of the amount of fuel dispensed to the amount of vapor returned, thus accurately detecting the vapor-liquid ratio of the fuel nozzle.

[0084] The gas-liquid detection device for refueling nozzles provided by this invention is reasonably designed, highly intelligent, highly accurate in measurement, reliable and stable in operation, and highly safe. As an inspection device, it is fully applicable to hazardous explosion environments, is convenient and flexible in operation, and can better meet the requirements of industry regulations, thus having great application and promotion value.

[0085] Optionally, in some embodiments of the present invention, in order to improve processing efficiency and accuracy, after the processor acquires the collected data and performs filtering and amplification processing on the data, it can use a set processing model to process the data to obtain the corresponding compensation value. Finally, it can calculate high-precision refueling ratio data and store the data.

[0086] Specifically, based on considerations of data accuracy and the precision requirements of the verification equipment, the database model after the refueling machine's vapor properties are trained by regression is used to obtain high-precision values.

[0087] Based on the principle of linear regression and the sensor input data, the input vector is set as follows:

[0088] X=[X1,X2,X3],Y=[Y1,Y2,Y3]

[0089] The formula for the linear regression model is defined as follows:

[0090] Z O =W1X1 + W2X2 + W3X3 + B1;

[0091] Z G =W4Y1+W5Y2+W6Y3+B2;

[0092] Multiple Z groups were measured using a high-precision flow meter. O Z G The X, Y data are used to obtain a matrix to simulate the true values, which serves as the training set.

[0093] The loss function is established using the least squares method:

[0094]

[0095]

[0096] The data was measured 5000 times, and the first 100 samples were selected.

[0097]

[0098]

[0099] Find the minimum deviation parameter (w′) O b′ O ), (w′ G b′ G ), and calculate the minimum deviation data of the sample in units of 00 data groups.

[0100] Ten sets of sample deviation data were extracted, and the results were iteratively updated after prediction and comparison.

[0101]

[0102] β is set to 100 samples. The step size can be selected using calculation methods or experimental methods. In this paper, the step size is determined to be 0.5.

[0103] Then, after repeating the iteration 50 times, the optimal model matrix can be obtained.

[0104] It is understood that in this embodiment of the invention, the processing model constructed above can be configured in the processor so that after the detection data of each probe is obtained, the detection data can be processed by the processing model to obtain the corresponding compensation value. Finally, the compensation values ​​are integrated into the calculation process of the gas-liquid ratio to obtain an accurate gas-liquid ratio.

[0105] The block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of processors, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using dedicated hardware-based electronic devices that perform the specified functions or operations, or using a combination of dedicated hardware and computer instructions.

[0106] In summary, the fuel nozzle gas-liquid ratio detection device provided by this invention, through the setting of a detection device that eliminates the need for gasoline to return to the tank, comprises a housing, an internal oil storage tank, and a core motherboard. During fuel nozzle gas-liquid ratio detection, the fuel nozzle is inserted into the fuel inlet of the detection device housing via the fuel dispenser. A structure identical to that of the fuel nozzle and fuel hose is located at the bottom of the housing, allowing the fuel nozzle to extend into the fuel tank of the vehicle. During measurement, fuel flows from the fuel dispenser, through the fuel hose and nozzle, and then through the fuel inlet, oil storage tank, fuel hose, and fuel nozzle of the detection device, ultimately reaching the fuel tank of the vehicle. Simultaneously, a fuel flow meter and a fuel flow meter measure the amount of fuel dispensed and the amount of returned gas, transmitting the measured values ​​to the core motherboard of the detection device. Finally, the processor in the core motherboard processes the detection data to detect the ratio of the amount of fuel dispensed to the amount of returned gas, thus achieving accurate detection of the fuel nozzle gas-liquid ratio.

[0107] The gas-liquid detection device for refueling nozzles provided by this invention is reasonably designed, highly intelligent, highly accurate in measurement, reliable and stable in operation, and highly safe. As an inspection device, it is fully applicable to hazardous explosion environments, is convenient and flexible in operation, and can better meet the requirements of industry regulations, thus having great application and promotion value.

[0108] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the foregoing disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A device for detecting the gas-liquid ratio of a refueling nozzle, characterized in that, The detection device includes: The system comprises a housing, an oil tank, a core motherboard, a detection component, a display screen, and a battery module, wherein the oil tank, the core motherboard, the detection component, and the battery module are disposed inside the housing. The top of the housing is provided with a filling port, which is used to insert the filling nozzle of the fuel dispenser, so that the oil flows from the fuel dispenser through the filling port to the oil storage tank. The bottom of the fuel tank is provided with a refueling pipe, and the end of the refueling pipe is provided with the refueling nozzle of the detection device. The refueling nozzle of the detection device is used to extend into the fuel tank of the fuel vehicle. The detection components include an oil and gas flow meter and an oil flow meter. The oil flow meter is installed on the refueling pipe to detect the amount of refueling, and the oil and gas flow meter is installed at the refueling port to detect the amount of oil and gas recovered. The processor on the core motherboard is used to process the amount of refueling detected by the oil flow meter and the amount of oil and gas recovery detected by the oil and gas flow meter to obtain the processing result, which includes the gas-liquid ratio during the refueling process of the refueling nozzle. The display screen is mounted on the housing wall and is used to display the processing results. The core motherboard is electrically connected to the battery module and is used to charge the battery module. The battery module supplies power to the core motherboard, the display screen, and the detection components.

2. The gas-liquid ratio detection device for a refueling nozzle according to claim 1, characterized in that, The detection device also includes a safety barrier disposed inside the housing. The core motherboard is electrically connected to the safety zone of the safety barrier, and the probe of the detection component is electrically connected to the danger zone of the safety barrier.

3. The device for detecting the gas-liquid ratio of a refueling nozzle according to claim 2, characterized in that, The detection device also includes a battery protection module, which is electrically connected to the battery module and the core motherboard.

4. The gas-liquid ratio detection device for a refueling nozzle according to claim 3, characterized in that, The detection device also includes a communication interface board, and the communication signal lines of the core motherboard are connected to the communication signal lines of the communication interface board.

5. The gas-liquid ratio detection device for a refueling nozzle according to claim 4, characterized in that, The detection component also includes a temperature sensor and a pressure sensor, which are disposed inside the housing and are used to detect the temperature and pressure inside the housing.

6. The device for detecting the gas-liquid ratio of a refueling nozzle according to any one of claims 1-5, characterized in that, The processor processes the amount of refueling detected by the oil flow meter and the amount of oil and gas recovery detected by the oil and gas flow meter through a pre-configured processing model.

7. The device for detecting the gas-liquid ratio of a refueling nozzle according to any one of claims 1-5, characterized in that, An observation port is provided at the corresponding position of the oil storage tank of the shell.

8. The device for detecting the gas-liquid ratio of a refueling nozzle according to any one of claims 1-5, characterized in that, The detection device also includes a bracket for fixing the housing.

9. The device for detecting the gas-liquid ratio of a refueling nozzle according to any one of claims 1-5, characterized in that, A sealing ring is provided at the refueling port position, and the sealing ring is used to secure the refueling nozzle.

10. The device for detecting the gas-liquid ratio of a refueling nozzle according to any one of claims 1-5, characterized in that, The housing is an explosion-proof housing.

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