A fluctuation prevention and steady flow system for reducing metering error in oil and gas recovery of gas stations

Abstract

The utility model relates to a kind of fluctuation reduction's current stabilizing system for gas station oil gas recovery, comprising: oil gas flowmeter, oil gas recovery pump, current stabilizing component, first pipeline and second pipeline, the current stabilizing component is located between oil gas flowmeter and oil gas recovery pump;Current stabilizing component includes support pipe and oil gas filter screen, the oil gas filter screen is arranged in the support pipe;One end of support pipe is communicated with the oil gas flowmeter by first pipeline, the other end of support pipe is communicated with the input end of the oil gas recovery pump by second pipeline.The current stabilizing component in the utility model buffers and rectifies high-speed airflow, slows down airflow velocity while combing flow field direction, avoids that disorderly airflow directly impacts the internal precision components of oil gas flowmeter, reduces the risk of misjudgment caused by flowmeter due to unstable airflow, reduces flow acquisition error;And the possibility of secondary fluctuation of airflow in transmission process can be reduced, further guarantee the accuracy of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas recovery technology in gas stations, and in particular to an anti-fluctuation flow stabilization system for reducing metering errors in oil and gas recovery at gas stations. Background Technology

[0002] In the normal operation of gas stations, in order to realize the recovery and utilization of spilled oil and gas generated during the sales process and reduce the adverse impact of oil and gas emissions on the atmospheric environment, the installation and use of gas station oil and gas recovery systems has become a mandatory requirement and necessary measure in the industry. Through this system, the spilled oil and gas can be recovered into the underground storage tank of the gas station, which on the one hand achieves the secondary utilization of resources, and on the other hand effectively reduces the pollution of the atmospheric environment by oil and gas emissions, meeting the dual needs of environmental protection and resource conservation.

[0003] However, current gas station vapor recovery systems only have two core components in their vapor metering section: vapor recovery pumps and vapor flow meters. The corresponding vapor flow acquisition scheme has obvious technical defects: during actual operation, the vapor recovery pump generates airflow disturbances, which directly affect the vapor flow meter, causing it to misjudge the actual vapor flow. This results in a large error in the vapor flow acquisition results, seriously affecting the accuracy of vapor recovery measurement and hindering the gas station from accurately assessing vapor recovery efficiency and effectively monitoring the system's operating status. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect of large error in the oil and gas recovery metering process of the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a flow stabilization system for reducing metering errors in oil and gas recovery at gas stations, comprising: an oil and gas flow meter, an oil and gas recovery pump, a flow stabilization component, a first pipeline, and a second pipeline. The flow stabilization component is disposed between the oil and gas flow meter and the oil and gas recovery pump. The flow stabilization component includes a support pipe and an oil and gas filter, the oil and gas filter being disposed inside the support pipe. One end of the support pipe is connected to the oil and gas flow meter via the first pipeline, and the other end of the support pipe is connected to the input end of the oil and gas recovery pump via the second pipeline.

[0006] In one embodiment of this utility model, the two ends of the support tube are provided with connectors, and the connectors are detachably connected to the support tube.

[0007] In one embodiment of this utility model, the connector is provided with an internal thread, and the surfaces of both ends of the support tube are provided with external threads that mate with the internal thread.

[0008] In one embodiment of this utility model, the connector is connected to the first pipeline and the second pipeline by a compression fitting.

[0009] In one embodiment of this utility model, the length of the first pipeline is less than the length of the second pipeline.

[0010] In one embodiment of this utility model, the axial length of the oil and gas filter screen is equal to the length of the support pipe.

[0011] In one embodiment of this utility model, the pore size of the oil and gas filter screen is 0.5mm-1.0mm.

[0012] In one embodiment of this utility model, the end of the oil and gas flow meter away from the support pipe is connected to a refueling gun.

[0013] In one embodiment of this utility model, the end of the oil and gas recovery pump away from the support pipe is connected to an oil tank.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: This invention discloses a flow stabilization system for reducing metering errors in gas station oil and gas recovery. The flow stabilization component of this invention buffers and rectifyes high-speed airflow, slowing down the airflow velocity and streamlining the flow field direction. This prevents turbulent airflow from directly impacting the precision components inside the oil and gas flow meter, reducing the risk of misjudgment caused by unstable airflow at the source and significantly reducing flow acquisition errors. Furthermore, it reduces the possibility of secondary fluctuations in airflow during transmission, providing a continuously stable working environment for the flow meter, further ensuring the accuracy of metering data and meeting the needs of gas stations for accurate statistics of oil and gas recovery. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Cross-sectional view of the internal structure of the medium-stability current component; Figure 3 for Figure 2 Schematic diagram of the middle support tube; Explanation of reference numerals in the accompanying drawings: 1. Oil and gas flow meter; 2. Oil and gas recovery pump; 3. Flow stabilizing component; 4. First pipeline; 5. Second pipeline; 6. Refueling nozzle; 7. Oil tank; 31. Support pipe; 32. Oil and gas filter; 33. Connector; 311. External thread; 331. Internal thread. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0017] Reference Figures 1-3 As shown, this utility model discloses a flow stabilization system for reducing metering errors in oil and gas recovery at gas stations, comprising: an oil and gas flow meter 1, an oil and gas recovery pump 2, a flow stabilization component 3, a first pipeline 4, and a second pipeline 5. The flow stabilization component 3 is disposed between the oil and gas flow meter 1 and the oil and gas recovery pump 2. The flow stabilization component 3 includes a support pipe 31 and an oil and gas filter 32, the oil and gas filter 32 being disposed inside the support pipe 31. One end of the support pipe 31 is connected to the oil and gas flow meter 1 through the first pipeline 4, and the other end of the support pipe 31 is connected to the input end of the oil and gas recovery pump 2 through the second pipeline 5.

[0018] In this invention, the oil and gas flow meter 1 is used to detect the flow rate of recovered oil and gas, and the oil and gas recovery pump 2 serves as the power source for oil and gas recovery, used to recover overflowing oil and gas. A flow stabilizing assembly 3 is installed between the oil and gas flow meter 1 and the oil and gas recovery pump 2. The two ends of the flow stabilizing assembly 3 are connected to the oil and gas flow meter 1 and the oil and gas recovery pump 2 respectively through a first pipe 4 and a second pipe 5, used to stabilize the flow velocity of the oil and gas. Specifically, the entire flow stabilizing assembly 3 uses a support pipe 31 as its housing, and an oil and gas filter 32 is installed inside. When oil and gas pass through, the oil and gas filter 32 can directly act on the turbulent airflow generated by the recovery pump. The oil and gas filter 32 buffers and rectifies the high-speed airflow through its own flow resistance characteristics, slowing down the airflow velocity while streamlining the flow field direction, preventing turbulent airflow from directly impacting the precision components inside the oil and gas flow meter 1, reducing the risk of misjudgment caused by unstable airflow at the source, and significantly reducing flow acquisition errors. The filtered airflow can enter the flow meter in a more stable state over a shorter distance, reducing the possibility of secondary fluctuations in the airflow during transmission. This provides a continuous and stable working environment for the flow meter, further ensuring the accuracy of the measurement data and meeting the needs of gas stations for accurate statistics on oil and gas recovery.

[0019] As a preferred embodiment of this utility model, the support pipe 31 in the above structure is made of metal, which can simultaneously meet the requirements of high pressure resistance, safe leakage prevention and long-term corrosion resistance, and ensure the safety of oil and gas transportation; secondly, the oil and gas filter screen 32 is made of metal alloy or metal-fiber composite material, which has good oil resistance, high temperature resistance and flame retardant properties, further improving the reliability of oil and gas transportation.

[0020] The flow stabilizing component 3 in this invention is installed between the oil and gas flow meter 1 and the oil and gas recovery pump 2. It buffers and rectifies the high-speed airflow through the oil and gas filter 32 in the support pipe 31, slowing down the airflow velocity and streamlining the flow field direction. This prevents turbulent airflow from directly impacting the precision components inside the oil and gas flow meter 1, reducing the risk of misjudgment caused by unstable airflow at the source and significantly reducing flow acquisition errors. Furthermore, it reduces the possibility of secondary fluctuations in airflow during transmission, providing a continuous and stable working environment for the flow meter, further ensuring the accuracy of measurement data and meeting the needs of gas stations for accurate statistics of oil and gas recovery.

[0021] Furthermore, the support tube 31 is provided with connectors 33 at both ends, and the connectors 33 are detachably connected to the support tube 31.

[0022] In this invention, the support tube 31 has connectors 33 at both ends, which connect the support tube 31 to the first pipeline 4 and the second pipeline 5. Specifically, the connectors 33 have internal threads 331, and the surfaces of both ends of the support tube 31 have external threads 311 that mate with the internal threads 331. As a preferred embodiment of this invention, both the internal threads 331 and the external threads 311 in the above structure are explosion-proof threads. During assembly, they must be tightened to the specified torque to ensure the required engagement length and clearance. Excessive looseness or tightness may affect the explosion-proof performance. After long-term use, the threads should be checked for wear, deformation, or corrosion. If any problems are found, the thread should be replaced promptly to avoid safety hazards.

[0023] Furthermore, the connector 33 is connected to the first pipe 4 and the second pipe 5 via a compression fitting.

[0024] Specifically, in this utility model, the connector 33 and the support tube 31 are integrated as a whole. During assembly, the first pipe 4 and the second pipe 5 are snapped into the support tube 31 to achieve quick connection and replacement, thereby improving installation and disassembly efficiency.

[0025] Furthermore, the length of the first pipe 4 is less than the length of the second pipe 5.

[0026] Specifically, the operation of the oil and gas recovery pump 2 generates airflow disturbances. If these disturbances are directly transmitted to the flow meter, they can easily lead to misjudgments. The filter screen itself has certain flow resistance characteristics. When installed close to the flow meter, it can form a buffer barrier on the path of airflow disturbance transmission: on the one hand, the pore structure of the filter screen can play a certain role in rectifying and stabilizing turbulent airflow, weakening the intensity of the disturbed airflow; on the other hand, the closer installation distance can shorten the transmission path of the filtered airflow to the flow meter, reducing the possibility of the airflow becoming turbulent again during transmission, providing a more stable fluid environment for the flow meter, and helping to mitigate the impact of airflow disturbances from the recovery pump on measurement.

[0027] Furthermore, the axial length of the oil and gas filter screen 32 is equal to the length of the support pipe 31.

[0028] When the filter screen length is equal to the housing length, the filter screen can form a full-length filtration structure inside the housing, completely filling the airflow channels inside the housing. When oil and gas flow through the housing, they must pass through the entire length of the filter screen, rather than only contacting a portion of it. On one hand, the full-length filter screen provides continuous and uniform flow resistance, preventing sudden changes in airflow velocity in localized areas of the housing due to a shorter filter screen (e.g., high velocity upon entering the housing followed by turbulence upon leaving the screen). This ensures that the airflow remains in a state of smooth deceleration and streamlined flow throughout the housing channels. On the other hand, the full-length filter screen eliminates dead zones in the airflow inside the housing, preventing the formation of eddies or backflows in areas not covered by the filter screen. This further optimizes airflow stability, providing a more stable operating environment for the subsequent flow meter and helping to reduce measurement errors. Furthermore, it reduces assembly difficulty and ensures structural sealing.

[0029] Furthermore, the pore size of the oil and gas filter screen 32 is 0.5mm-1.0mm.

[0030] Specifically, one of the core requirements for flow stabilization is to reduce the pulsed airflow and high-speed vortex generated by the oil and gas recovery pump 2, and the flow resistance strength of the filter screen directly determines the buffering effect. If the pores are too small, the filter screen will have too strong an obstruction effect on the airflow. Although it can significantly reduce the flow rate, it will easily lead to the accumulation of oil and gas in the device, causing an abnormal increase in the negative pressure of the system. This may not only affect the normal pumping efficiency of the recovery pump, but may also cause local airflow turbulence due to the excessive pressure difference formed before and after the filter screen. If the pores are too large, the flow resistance of the filter screen will be too weak, and the obstruction and dispersion effect on the high-speed airflow will be insufficient. It will not be able to effectively disperse the vortex generated by the recovery pump, and the airflow will still pass through the filter screen quickly in a turbulent state. It can only slightly reduce the flow rate and it is difficult to achieve flow field sorting. The flow stabilization effect will be greatly weakened, and the flow meter will still be affected by airflow fluctuations and produce measurement errors. In this invention, the pore size of the oil-gas filter screen 32 is controlled at 0.5mm-1.0mm, which can form a moderate flow resistance. This can effectively block the high-speed airflow output by the recovery pump, forcing the airflow to slow down and disperse into multiple fine streams, thus avoiding the airflow directly impacting the flow meter. At the same time, it will not cause system pressure imbalance due to excessive resistance, ensuring that the oil and gas are continuously transmitted at a stable flow rate, achieving a stable flow effect of buffering without clogging and slowing down without stagnation.

[0031] Furthermore, the end of the oil and gas flow meter 1 furnishing nozzle 6 is connected to the end away from the support pipe 31; the end of the oil and gas recovery pump 2 furnishing nozzle 7 is connected to the end away from the support pipe 31.

[0032] Specifically, the entire oil and gas recovery system uses the oil and gas recovery pump 2 to generate power to recover the oil and gas overflowing from one end of the refueling nozzle 6. The oil and gas pass through the oil and gas flow meter 1, the oil and gas filter 32 and the oil and gas recovery pump 2 in sequence, and finally enter the oil tank 7.

[0033] In summary, this utility model introduces a flow stabilization system for reducing metering errors in gas station vapor recovery. The flow stabilization component 3 is installed between the vapor flow meter 1 and the vapor recovery pump 2. Through the vapor filter 32 within the support pipe 31, it buffers and rectifies the high-speed airflow, slowing down the airflow velocity and streamlining the flow field direction. This prevents turbulent airflow from directly impacting the precision components inside the vapor flow meter 1, reducing the risk of misjudgment caused by unstable airflow at the source and significantly decreasing flow acquisition errors. Furthermore, it reduces the possibility of secondary fluctuations in airflow during transmission, providing a continuously stable working environment for the flow meter, further ensuring the accuracy of metering data, and meeting the needs of gas stations for precise vapor recovery statistics.

[0034] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fluctuating flow stabilization system for reducing metering errors in oil and gas recovery at gas stations, characterized in that, include: The system includes an oil and gas flow meter, an oil and gas recovery pump, a flow stabilizing component, a first pipeline, and a second pipeline. The flow stabilizing component is located between the oil and gas flow meter and the oil and gas recovery pump. The flow stabilizing component includes a support pipe and an oil and gas filter screen, with the oil and gas filter screen disposed inside the support pipe. One end of the support pipe is connected to the oil and gas flow meter via the first pipeline, and the other end of the support pipe is connected to the input end of the oil and gas recovery pump via the second pipeline.

2. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The support tube is provided with connectors at both ends, and the connectors are detachably connected to the support tube.

3. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 2, characterized in that: The connector has an internal thread, and the surfaces at both ends of the support tube have external threads that mate with the internal thread.

4. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 2, characterized in that: The connector is connected to the first and second pipelines via a compression fitting.

5. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The length of the first pipeline is less than the length of the second pipeline.

6. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The axial length of the oil and gas filter screen is equal to the length of the support pipe.

7. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The pore size of the oil and gas filter screen is 0.5mm-1.0mm.

8. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The end of the oil and gas flow meter furthest from the support pipe is connected to a refueling nozzle.

9. The anti-fluctuation flow stabilization system for reducing metering errors in gas station oil and gas recovery according to claim 1, characterized in that: The oil and gas recovery pump is connected to an oil tank at the end furthest from the support pipe.

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