Multifunctional intelligent all-in-one machine for oil gun detection

Abstract

The invention discloses a multifunctional intelligent all-in-one machine for oil gun detection, and relates to the technical field of oil gun detection, the multifunctional intelligent all-in-one machine comprises an oil storage box body, a detection box body is fixedly installed above the oil storage box body, a standard measuring vessel is fixedly connected above the oil storage box body, and the top of the standard measuring vessel extends to the position above the detection box body. An electronic liquid level meter is fixedly installed on the top of the standard measuring vessel, the measuring end of the electronic liquid level meter is located in an inner cavity of the standard measuring vessel, a first temperature transmitter is fixedly installed on the side wall of the standard measuring vessel, and a second temperature transmitter is fixedly installed on the top of the standard measuring vessel. According to the invention, a gas-liquid ratio detection function and a metrological verification function are integrated in the whole machine, and two kinds of different equipment / appliances which are originally needed are subjected to function integration; a full-automatic data acquisition system is adopted, manual reading is completely replaced, full-automatic gas-liquid ratio detection and metrological verification functions are achieved, and an environmental factor compensation function is achieved.

Description

Technical Field

[0001] This invention relates to the field of oil gun testing technology, and specifically to a multifunctional intelligent all-in-one machine for oil gun testing. Background Technology

[0002] To strengthen atmospheric environmental protection, accelerate the control of oil and gas pollution, and prevent environmental pollution caused by the volatilization and emission of oil and gas, the state has established a legal and regulatory system and management system for VOCs pollution prevention and control. All gas stations are required to install oil and gas recovery systems, including secondary oil and gas recovery systems for fuel nozzles. However, with the long-term use of the equipment, the gas-liquid ratio of the fuel nozzles often fails to meet the standards, requiring regular gas-liquid ratio testing of the fuel nozzles. In addition, to ensure the metering accuracy of the fuel nozzles, gas stations also need to regularly calibrate the accuracy of the fuel nozzles.

[0003] Existing technologies all employ a single-use mechanical method for detection and measurement. During calibration, a single metering container can only be calibrated once, requiring two workers to repeatedly return it to the container. Readings also need to be taken manually, and deviations calculated manually, resulting in a huge workload and inconvenience. The same problems exist with gas-liquid ratio detection. First, gas stations lack specialized equipment for gas-liquid ratio testing. Even professional testing units require manual input of fuel dispensing data and manual calculation of the gas-liquid ratio, posing a risk of cheating. Second, due to the lack of specialized metering equipment, the gas-liquid ratio is based on the volume of fuel dispensed from the fuel dispenser's display panel, leading to inaccuracies in the gas-liquid ratio readings. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-functional intelligent all-in-one machine for oil gun testing, so as to solve the problems mentioned in the background art, which uses a single mechanical mode for testing and measurement. In this case, a single measuring barrel can only be calibrated once during the measurement and calibration process, and the readings also need to be read manually and the deviation value needs to be calculated manually, which is a huge workload and inconvenient to use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A multi-functional intelligent integrated machine for testing oil guns includes an oil storage tank. A testing chamber is fixedly installed on top of the oil storage tank. A standard measuring instrument is fixedly connected to the top of the oil storage tank, with its top extending above the testing chamber. An electronic level gauge is fixedly installed on the top of the standard measuring instrument, with its measuring end located inside the standard measuring instrument. A first temperature transmitter is fixedly installed on the side wall of the standard measuring instrument, and a second temperature transmitter is fixedly installed on its top. An oil gun adapter is located on the top of the standard measuring instrument, and a vacuum bellows is fixedly connected to the side of the oil gun adapter. A gas flow meter is fixedly connected to the end of the vacuum bellows away from the oil gun adapter. The gas flow meter is located inside the detection chamber, and an explosion-proof box is fixedly installed inside the detection chamber. A sensor receiver and a WiFi module are fixedly installed inside the explosion-proof box. An explosion-proof plate is fixedly installed outside the detection chamber. The explosion-proof plate connects to the explosion-proof box via WiFi for data transmission. The gas flow meter, electronic level gauge, temperature transmitter #1, and temperature transmitter #2 are connected to the inside of the explosion-proof box via a 485 signal line. This design integrates gas-liquid ratio detection and metrological verification functions into a single unit, employing a fully automatic data acquisition system to completely replace manual readings, achieving fully automatic gas-liquid ratio detection and metrological verification functions, and also possessing environmental factor compensation capabilities.

[0007] Preferably, the measuring end of the first temperature transmitter is located in the upper half of the standard measuring vessel, and the measuring end of the second temperature transmitter is located in the lower half of the standard measuring vessel.

[0008] Preferably, an electrostatic grounding clamp is fixedly connected to the bottom of the detection box, and the electrostatic grounding clamp is electrically connected to the external grounding wire.

[0009] Preferably, a viewing window is fixedly installed on the right side of the oil storage tank, and an oil unloading valve is fixedly connected to the right side of the oil storage tank.

[0010] Preferably, a hydraulic platform vehicle for lifting the entire machine is fixedly installed at the bottom of the oil storage tank to realize oil unloading by utilizing the potential difference. It has a hydraulic lifting system and can be operated by a single person to handle the return to the tank, greatly reducing the workload of front-line employees.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0012] 1. This invention integrates the gas-liquid ratio detection function and the metrological verification function into a single unit, thus combining the functions of two different devices / instruments that would otherwise have been required.

[0013] 2. This invention employs a fully automated data acquisition system, completely replacing manual readings, to achieve fully automated gas-liquid ratio detection and metrological verification functions, and also has an environmental factor compensation function;

[0014] 3. It adopts a large-capacity storage and transferable container, realizing a maximum oil storage capacity of 120L, and is equipped with a hydraulic lifting system, which can realize single-person operation for tank return processing, greatly reducing the workload of front-line employees. The work that originally required 2-3 people can now be completed by only 1 person.

[0015] 4. This invention can connect the explosion-proof tablet and the mobile phone via Bluetooth, upload the real-time detection data from the explosion-proof tablet to the mobile phone, and then use the mobile phone's Internet access function to upload the detection data from the mobile APP to the cloud for station-level management. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a schematic diagram of the upper structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the bottom side structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the front structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the installation of an existing gas-liquid ratio detection device.

[0022] In the diagram: 1. Oil gun adapter; 21. Temperature transmitter No. 1; 22. Temperature transmitter No. 2; 3. Vacuum bellows; 4. Explosion-proof plate; 5. Gas flow meter; 6. Oil storage tank; 7. Liquid level gauge; 8. Standard measuring instrument; 9. Viewing window; 10. Oil unloading valve; 11. Nameplate; 12. Explosion-proof box; 13. Hydraulic platform truck. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] like Figure 6As shown, 601 is the fuel nozzle connected to the gas-liquid ratio adapter, 602 is the testing oil tank, 603 is the grounding device, 604 is the gas flow meter, 605 is the pipeline connecting to the adapter (nominal inner diameter 20-25mm, length 1000-1800mm), 606 is the oil-gas pipeline connecting to the gas flow meter (nominal inner diameter 20-25mm, length 1000-1800mm), and 607 is a bend (pipe inner diameter at least 50mm) used to guide the oil and gas to the ground tank. According to the national standard document "Emission Standard of Air Pollutants for Gas Stations" GB20952-2020, the principle and overview of the gas-liquid ratio detection are as follows: A sealed adapter is installed at the nozzle of the fuel nozzle. This adapter is connected to the gas flow meter. The airflow first passes through the gas flow meter and then enters the oil-gas collection hole on the nozzle. The ratio of the measured gas volume to the gasoline volume simultaneously measured by the fuel dispenser is called the gas-liquid ratio. By measuring the gas-liquid ratio, the recovery effect of the oil and gas recovery system can be understood.

[0025] The following is the detection procedure:

[0026] 1. Press Figure 6 Connect the gas-liquid ratio adapter and the fuel nozzle correctly, cover the fuel nozzle's gas collection hole, and ensure a tight connection.

[0027] 2. Record the initial reading of the gas flow meter before each test.

[0028] 3. Reset the reading on the fuel dispenser to zero.

[0029] 4. Determine the refueling flow rate during testing. Turn the refueling nozzle to the maximum flow rate allowed by the refueling machine, obtaining one gas-liquid ratio for each nozzle. Begin refueling the test oil container, ensuring a seal between the refueling nozzle nozzle and the refueling hose on the test oil container (provided it is grounded) during the refueling process.

[0030] 5. Add 15-20L of gasoline.

[0031] 6. Record the following information after each test: a) Fuel dispenser serial number; b) Gasoline grade; c) Fuel nozzle model and serial number; d) Initial reading of the gas flow meter, Vi; e) Initial reading of the fuel dispenser flow meter, Gi; f) Final reading of the gas flow meter, Vf; g) Final reading of the fuel dispenser flow meter, Gf;

[0032] The formula for calculating the gas-liquid ratio (A / L) is as follows:

[0033]

[0034] If the gas-liquid ratio is outside the standard limit, and the difference between the measured gas-liquid ratio and the limit is less than or equal to 0.1, two more gas-liquid ratio tests should be performed, but no adjustments should be made to the refueling line or vapor recovery line in between. To ensure measurement accuracy, necessary adjustments to the gas-liquid ratio detection device are permitted, including the gas-liquid ratio adapter and the refueling nozzle. If the gas-liquid ratio detection device is adjusted, the previous test result for that nozzle is invalid. Calculate the arithmetic mean of the three test results. If the average gas-liquid ratio is within the given limit, the gas-liquid ratio test for that refueling nozzle is compliant. If the average is outside the limit, the gas-liquid ratio test for that refueling nozzle is non-compliant.

[0035] According to the National Metrological Verification Regulation "Fuel Dispenser (Trial)" JJG 443—2023, the measuring instruments for fuel dispensers include the initial verification, subsequent verification, and in-use inspection of the fuel dispenser. The main standard instrument is a standard metal measuring instrument (hereinafter referred to as the measuring instrument).

[0036] To ensure the accuracy of fuel dispenser measurements during use and to protect consumers' basic interests, gas stations conduct monthly calibration checks on their fuel nozzles.

[0037] The document requires the following specific verification procedures:

[0038] Place the measuring instrument on a hard, flat surface (if the measuring instrument is placed on a transport vehicle or other support, ensure that it does not shake during calibration) and ensure that the measuring instrument is properly grounded.

[0039] Start the fuel dispenser (if equipped with a vapor recovery device, start the vapor recovery device simultaneously), turn on the fuel nozzle, adjust the flow rate to Q1, and pour fuel into the measuring vessel until it is full. Use a stopwatch to time the filling process, measure the cumulative flow displayed on the fuel dispenser, and calculate Q1. Dispense fuel according to the time specified on the measuring vessel calibration certificate, close the valve, and put the measuring vessel into a ready state.

[0040] Level the measuring instrument and ensure it is properly grounded.

[0041] Start the fuel dispenser and return the indicator to zero. Adjust the flow rate to the calibration point, fill the dispenser with fuel, and simultaneously measure the fuel temperature at the nozzle with a thermometer. Read the fuel temperature only after the thermometer reading has stabilized. When the dispenser is full, turn off the fuel dispenser.

[0042] After the oil foam and air bubbles in the measuring vessel disappear, read the liquid level in the measuring vessel and record the reading. Measure and record the temperature of the oil in the measuring vessel. Then, drain the liquid according to the time specified on the measuring vessel calibration certificate and close the valve.

[0043] If multiple measurements are required, repeat steps 3 to 5 above.

[0044] 7. Follow steps 3 to 6 above to complete the verification of other flow points.

[0045] Verification flow point and number of measurements

[0046]

[0047] 8. The actual volume value VBt measured by the measuring instrument at the calibration temperature tJ is calculated according to the following formula:

[0048] V Bt =V B [1+β Y (t J -t B )+β B (t B -20)]

[0049] In the formula:

[0050] V Bt --- Measuring instrument at t J The actual volume, L, is given below;

[0051] V B ---Standard volume of the measuring instrument at 20℃, in L;

[0052] β Y ---The coefficient of volumetric expansion of the test medium, °C-1;

[0053] Note: The volume expansion coefficient of gasoline is 12×10-4℃-1, and that of kerosene and light diesel oil is 9×10-4℃-1. For other oil products, please refer to the volume expansion coefficient before use.

[0054] β B ---Coefficient of volumetric expansion of the measuring instrument material, °C-1;

[0055] Note: The volume expansion coefficient of stainless steel is 50×10-6℃-1, that of carbon steel is 33×10-6℃-1, and that of brass and bronze is 53×10-6℃-1.

[0056] t J ---The oil temperature output by the flow measurement converter inside the fuel dispenser (replaced by the oil temperature at the nozzle), ℃;

[0057] t B --- Oil temperature in the measuring vessel, °C.

[0058] 9. Relative error of volume indication E V Calculate using the formula below:

[0059]

[0060] In the formula:

[0061] E V ---Relative error of the volume indication of the fuel dispenser;

[0062] V J ---Fuel dispenser at t J The volume reading below, in L.

[0063] Repeatability E r Calculate using the following formula:

[0064]

[0065] In the formula:

[0066] E r ---Repeatability, %;

[0067] E Vmax --Maximum relative error of indication at the same calibration point, %;

[0068] E Vmin --Minimum relative error of indication at the same calibration point, %;

[0069] d n ---Range coefficient, measured 3 times d n The value is 1.69.

[0070] like Figures 1-5As shown, this invention provides a multi-functional intelligent integrated machine for oil gun testing, including an oil storage tank 6, a testing chamber fixedly installed on top of the oil storage tank 6, and a standard measuring instrument 8 fixedly connected to the top of the oil storage tank 6. Both the oil storage tank 6 and the standard measuring instrument 8 are made of 1Cr18Ni9Ti stainless steel plate. The top of the standard measuring instrument 8 extends to the top of the testing chamber, and an electronic level gauge 7 is fixedly installed on the top of the standard measuring instrument 8. The measuring end of the electronic level gauge 7 is located in the inner cavity of the standard measuring instrument 8. A first temperature transmitter 21 is fixedly installed on the side wall of the standard measuring instrument 8, and a second temperature transmitter 22 is fixedly installed on the top of the standard measuring instrument 8. An oil nozzle is provided on the top of the standard measuring instrument 8. The gun adapter 1 has a vacuum bellows 3 fixedly connected to its side. A gas flow meter 5 is fixedly connected to the end of the vacuum bellows 3 furthest from the gun adapter 1. The gas flow meter 5 is located inside the detection chamber. An explosion-proof box 12 is fixedly installed inside the detection chamber. A sensor receiver and a WiFi module are fixedly installed inside the explosion-proof box 12. An explosion-proof plate 4 is fixedly installed outside the detection chamber. The explosion-proof plate 4 connects to the explosion-proof box 12 via WiFi for data transmission. The gas flow meter 5, electronic level gauge 7, temperature transmitter 21 (number one), and temperature transmitter 22 (number two) are connected to the inside of the explosion-proof box 12 via a 485 signal line. The oil gun can be inserted... Connected to the top of the standard measuring vessel 8, oil is injected into the interior of the standard measuring vessel 8. Through the design of the electronic level gauge 7, the real-time liquid level inside the standard measuring vessel 8 can be measured. When the oil gun is inserted into the top of the standard measuring vessel 8, the oil gun adapter 1 is wrapped around the oil and gas recovery area of ​​the oil gun. During operation, air can be drawn from the gas flow meter 5 through the vacuum bellows 3. The gas flow meter 5 measures the gas flow rate data, the electronic level gauge 7 measures the liquid level data, the temperature data measured by temperature transmitter 21 and temperature transmitter 22, and the gas flow rate data measured by the gas flow meter 5. These data are collected via a signal transmission line to the sensor receiver inside the explosion-proof box 12 for sensing. The receiver is then connected to the explosion-proof tablet 4 via a router, and the above data is uploaded to the explosion-proof tablet 4 via WiFi. The explosion-proof tablet 4 is equipped with corresponding data processing software, which can automatically calculate the gas-liquid ratio and measurement deviation. After a single test is completed, it connects to the mobile APP via Bluetooth and uploads the test data to the APP for cloud-based station-level management. This design integrates the gas-liquid ratio detection function and the metrological verification function into the whole machine, which originally required two different devices / instruments. It adopts a fully automatic data acquisition system, completely replacing manual reading, realizing fully automatic gas-liquid ratio detection and metrological verification functions, and has an environmental factor compensation function.

[0071] Furthermore, such as Figures 1-5As shown, the temperature measuring end of the first temperature transmitter 21 is located in the upper half of the cavity of the standard measuring vessel 8, and the temperature measuring end of the second temperature transmitter 22 is located in the lower half of the cavity of the standard measuring vessel 8. The first temperature transmitter 21 and the second temperature transmitter 22 read the oil temperature at the oil outlet and the oil temperature inside the standard measuring vessel 8, respectively.

[0072] Furthermore, such as Figures 1-5 As shown, an electrostatic grounding clamp is fixedly connected to the bottom of the testing box. The electrostatic grounding clamp is electrically connected to the external grounding wire. The electrostatic grounding clamp can discharge static electricity from the equipment, improving safety.

[0073] Furthermore, such as Figures 1-5 As shown, a viewing window 9 is fixedly installed on the right side of the oil storage tank 6, an oil discharge valve 10 is fixedly connected to the right side of the oil storage tank 6, and a nameplate 11 is fixedly installed on the right side of the oil storage tank 6. The design of the viewing window 9 makes it convenient for users to observe the liquid level inside the oil storage tank 6 and control the opening of the oil discharge valve 10, thereby discharging the oil inside the oil storage tank 6. The design of the nameplate 11 makes it convenient for users to identify this structure.

[0074] Furthermore, such as Figures 1-5 As shown, a hydraulic platform vehicle for lifting the entire machine is fixedly installed at the bottom of the oil storage tank to realize oil unloading by utilizing the potential difference. The hydraulic platform vehicle 13 is an existing device that can lift the oil storage tank 6 and facilitate the overall turnover operation of the oil storage tank 6. It can realize single-person operation for returning to the tank, greatly reducing the workload of front-line employees. The work that originally required 2 to 3 people can now be completed by only 1 person.

[0075] The working principle of this multi-functional intelligent all-in-one machine for oil gun testing will be explained in detail below.

[0076] like Figures 1-5 As shown, first, place the structure on a relatively hard surface and level it. Use an electrostatic grounding clamp to connect the structure and the fuel dispenser's grounding point to equipotential. Insert the fuel nozzle into the fuel nozzle adapter 1 and dispense fuel to 15-16L. The electronic level gauge 7 automatically reads the fuel level volume in the standard measuring vessel 8 (read after the fuel bubbles disappear and stabilize). The gas-liquid ratio value for this measurement is automatically calculated by collecting the return gas volume through the gas flow meter 5. Then dispense fuel to 20L. The electronic level gauge 7 automatically reads the actual fuel level volume in the standard measuring vessel 8. At the same time, the oil temperature at the dispensing port and the oil temperature inside the standard measuring vessel 8 are read by temperature transmitters 21 and 22. During background data processing, the environmental compensation factors such as the oil temperature at the dispensing port and the oil temperature inside the standard measuring vessel 8 are calculated by the software according to the data calculation requirements of "Fuel Dispenser (Trial)" JJG 443—2023.

[0077] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0078] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-functional intelligent all-in-one machine for oil gun testing, characterized in that: The device includes an oil storage tank, a detection chamber fixedly installed on top of the oil storage tank, a standard measuring instrument fixedly connected to the top of the oil storage tank, the top of the standard measuring instrument extending above the detection chamber, an electronic level gauge fixedly installed on the top of the standard measuring instrument, the measuring end of the electronic level gauge located inside the cavity of the standard measuring instrument, a first temperature transmitter fixedly installed on the side wall of the standard measuring instrument, a second temperature transmitter fixedly installed on the top of the standard measuring instrument, an oil gun adapter located on the top of the oil gun adapter, a vacuum bellows fixedly connected to the side of the oil gun adapter, a gas flow meter fixedly connected to the end of the vacuum bellows away from the oil gun adapter, the gas flow meter located inside the detection chamber, an explosion-proof box fixedly installed inside the detection chamber, a sensor receiver and a WiFi module fixedly installed inside the explosion-proof box, an explosion-proof plate fixedly installed outside the detection chamber, the explosion-proof plate connecting to the explosion-proof box via WiFi for data transmission, and the gas flow meter, electronic level gauge, first temperature transmitter, and second temperature transmitter connected to the inside of the explosion-proof box via a 485 signal line.

2. The multi-functional intelligent all-in-one machine for oil gun testing according to claim 1, characterized in that: The measuring end of the first temperature transmitter is located in the upper half of the standard measuring vessel, and the measuring end of the second temperature transmitter is located in the lower half of the standard measuring vessel.

3. The multi-functional intelligent all-in-one machine for oil gun testing according to claim 1, characterized in that: An electrostatic grounding clamp is fixedly connected to the bottom of the detection box, and the electrostatic grounding clamp is electrically connected to the external grounding wire.

4. The multi-functional intelligent all-in-one machine for oil gun testing according to claim 1, characterized in that: A viewing window is fixedly installed on the right side of the oil storage tank, and an oil unloading valve is fixedly connected to the right side of the oil storage tank.

5. The multi-functional intelligent all-in-one machine for oil gun testing according to claim 1, characterized in that: A hydraulic platform vehicle for lifting the entire machine is fixedly installed at the bottom of the oil storage tank to achieve oil unloading by utilizing the potential difference.

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