Gas station horizontal storage tank oil gas recovery cheating simulation test system

Abstract

The utility model discloses a gas station horizontal storage tank oil gas recovery cheating simulation test system, which belongs to the technical field of oil gas recovery and comprises a horizontal storage tank, an oil bin, an oil tank, an oiling machine, a liquid flowmeter, a gas flowmeter, a water pump, a gas vacuum pump, an oil gas treatment device, an oil gas discharge device, a pressure gauge, a pipeline, a valve and the like. According to the utility model, the normal horizontal storage tank oil gas recovery operation in the oil unloading process of an automobile oil tank truck, the refueling process of a refueling machine and the oil product storage process in a gas station can be demonstrated in a laboratory, and the corresponding cheating process can be analyzed and simulated; and the gas-liquid ratio adjustment of the oil gun and the liquid resistance change condition of the oil gas recovery pipeline can be demonstrated.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas recovery, and in particular relates to a simulation test system for oil and gas recovery in a horizontal storage tank at a gas station. Background Art

[0002] As we all know, oil, natural gas, and their products are mixtures of various hydrocarbons, with the light hydrocarbon components being highly volatile. During the production, storage, transportation, and sales of oil products, some volatile organic compounds (VOCs) are inevitably discharged into the atmosphere, causing evaporation and loss of oil products, wasting resources, and posing safety risks and environmental hazards. Gas station oil and gas recovery is a key component of VOC emission control, specifically including primary oil and gas recovery during the unloading process of tanker trucks; secondary oil and gas recovery during the refueling of public vehicles; and tertiary oil and gas recovery during the oil and gas treatment process.

[0003] Horizontal storage tanks are commonly used at gas stations. Typically constructed of metal (also known as horizontal metal tanks), they serve as the primary storage and metering equipment for gasoline, diesel, and other fuels at these stations. They are also crucial hardware components for the gas station's oil and vapor recovery process. Specifically, horizontal storage tanks are used to receive and deliver oil and vapor during the primary oil and vapor recovery process; to deliver and receive oil and vapor during the secondary oil and vapor recovery process; and to serve as the primary vehicle for oil and vapor reuse during the tertiary oil and vapor recovery process.

[0004] In recent years, 10% to 40% of gas stations have problems with aging oil and gas recovery facilities, poor maintenance, and even active fraud, which has resulted in the oil and gas recovery system failing to achieve the desired prevention and control effects, pollution and waste still exist, and there are major safety hazards.

[0005] For example, some gas stations do not activate the oil and gas recovery system when unloading oil; when refueling private vehicles, some gas stations do not turn on the vacuum pump, causing the refueling gun head to be unable to absorb oil and gas; the vent valve is opened during the storage of oil products, causing a large amount of oil and gas to be discharged directly into the atmosphere; during the storage of oil products, the air inlet of the oil and gas processing device is closed, and the three-stage oil and gas recovery cannot be carried out normally.

[0006] Therefore, the oil vapor recovery process at gas stations must be strictly regulated. However, due to the numerous oil vapor recovery equipment and pipelines at gas stations and the complex operation, it is difficult for ordinary personnel to determine whether there is active cheating. Therefore, a gas station horizontal tank oil vapor recovery cheating simulation test system is urgently needed to simulate the oil vapor recovery and cheating process. Utility Model Content

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A gas station horizontal tank oil and gas recovery cheating simulation test system, including:

[0009] The first horizontal storage tank and the second horizontal storage tank are arranged side by side to simulate the underground horizontal storage tanks of a gas station;

[0010] An oil tank is provided above the first horizontal storage tank and is used to simulate the oil tank of a tanker truck. The oil unloading end of the oil tank is respectively connected to the lower part of the inner cavity of the first horizontal storage tank and the second horizontal storage tank, and the air inlet end of the oil tank is respectively connected to the atmosphere, the first horizontal storage tank and the upper part of the second horizontal storage tank;

[0011] A fuel tank, which is arranged above the second horizontal storage tank and is used to simulate a fuel tank for a social vehicle;

[0012] a refueling gun, wherein the oil inlet end of the refueling gun is respectively connected to the lower inner portions of the first horizontal storage tank and the second horizontal storage tank, the air return end of the refueling gun is connected to the upper inner portion of the second horizontal storage tank, and the refueling end of the refueling gun is connected to the upper inner portion of the fuel tank;

[0013] An oil and gas processing device is provided above the first horizontal storage tank and is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for processing, and one end of the oil and gas processing device is connected to the upper part of the inner cavity of the second horizontal storage tank;

[0014] an oil and gas discharge device, the oil and gas discharge device being arranged above the first horizontal storage tank, with one end being in communication with the upper portion of the inner cavity of the first horizontal storage tank, and the other end being in communication with the oil and gas processing device;

[0015] an external water tank, located below the first horizontal storage tank and the second horizontal storage tank, for providing and receiving test medium water for circulation;

[0016] The lower parts of the first horizontal storage tank, the second horizontal storage tank, the oil bin, and the oil tank all store test medium water, and the upper parts of the inner cavities are all filled with air. The upper parts of the first horizontal storage tank and the second horizontal storage tank are connected, and a control valve is provided on the connecting pipeline.

[0017] Furthermore, the first horizontal storage tank is provided with a first oil unloading pipeline and an oil unloading port A1 connected to the first oil unloading pipeline, a first oil and gas recovery pipeline and an oil and gas output port B1 connected to the first oil and gas recovery pipeline, a first pressure gauge is provided at the upper part of the inner cavity of the first horizontal storage tank, a first water pump is provided at the bottom of the inner cavity of the first horizontal storage tank, used to simulate the oil pump in the horizontal storage tank of a gas station, and the test medium water is stored in the lower part of the inner cavity of the first horizontal storage tank, used to simulate the high-grade gasoline in the storage tank; the upper part of the inner cavity is a first oil and gas space, and the first oil and gas space is filled with Air is used to simulate the volatilized oil and gas in the storage tank. The first water pump is connected to the refueling gun through a first refueling pipeline. A first stop valve is provided on the first refueling pipeline. One end of the first oil unloading pipeline extends into the bottom of the inner cavity of the first horizontal storage tank, and the other end is connected to the oil unloading port A1 through a second stop valve. One end of the first oil and gas recovery pipeline extends into the first oil and gas space, and the other end is connected to the oil and gas output port B1 through a third stop valve. A fifth stop valve is provided at the lower end of the first horizontal storage tank, and a first upper cover is provided at the upper end of the first horizontal storage tank.

[0018] Furthermore, the second horizontal storage tank is provided with a second oil unloading pipeline and an oil unloading port A2 connected to the second oil unloading pipeline. The upper inner parts of the first horizontal storage tank and the second horizontal storage tank are connected through a tank connecting pipeline. The upper inner part of the second horizontal storage tank is provided with a second pressure gauge. The bottom inner part of the second horizontal storage tank is provided with a second water pump for simulating the oil pump in the horizontal storage tank at a gas station. The lower inner part of the second horizontal storage tank stores test medium water for simulating low-grade gasoline in the storage tank. The upper inner part is a second oil and gas space, and the second oil and gas space is filled with air for simulating the storage tank. The oil and gas evaporated in the tank, a fourth stop valve is provided on the tank connecting pipeline; the second water pump is connected to the refueling gun through a second refueling pipeline, a sixth stop valve is provided on the second refueling pipeline, one end of the second oil unloading pipeline extends into the bottom of the inner cavity of the second horizontal storage tank, and the other end is connected to the oil unloading port A2 through the seventh stop valve, one end of the second oil and gas recovery pipeline extends into the second oil and gas space of the second horizontal storage tank, and the other end is connected to the return air end of the refueling gun, the lower end of the second horizontal storage tank is provided with an eighth stop valve, and the upper end of the second horizontal storage tank is provided with a second upper cover.

[0019] Furthermore, the lower end of the oil tank is connected to the tank truck oil unloading pipeline and the oil unloading port A3 connected to the tank truck oil unloading pipeline, the upper end of the oil tank is connected to the tank truck air intake pipeline, the tank truck air intake pipeline is connected to the tank truck oil and gas recovery pipeline and the oil and gas input port B2 connected to the tank truck oil and gas recovery pipeline, the upper part of the inner cavity of the oil tank is provided with a third pressure gauge, and the tank truck oil and gas recovery pipeline is provided with a first gas flow meter; the lower part of the inner cavity of the oil tank stores test medium water for simulating gasoline in the oil tank; the upper part of the inner cavity is a third oil and gas space, The third oil and gas space is filled with air to simulate the volatilized oil and gas in the oil tank; a third upper cover is provided above the oil tank, and the tank truck oil unloading pipeline is connected to the oil unloading port A3 through the fourteenth stop valve; the tank truck oil and gas recovery pipeline, one end of which is connected to the third oil and gas space through the seventeenth stop valve, and the other end is connected to the oil and gas input port B2 in sequence through the sixteenth stop valve, the first gas flow meter, and the fifteenth stop valve; one end of the tank truck air intake pipeline is connected to the inlet of the seventeenth stop valve, and the other end is connected to the atmosphere through the eighteenth stop valve.

[0020] Furthermore, a fourth pressure gauge is provided on the upper part of the fuel tank, and a drain pipe is provided at the lower end of the fuel tank; the fuel tank is used to simulate a social vehicle refueling tank, and is located above the second horizontal storage tank. The lower part of the inner cavity of the fuel tank is filled with test medium water, which is used to simulate the gasoline in the fuel tank; the upper part of the inner cavity is a fourth oil and gas space, and the fourth oil and gas space is filled with air, which is used to simulate the oil and gas volatilized in the fuel tank; a fourth upper cover is provided above the fuel tank, and a refueling hole is provided on the fourth upper cover. The drain pipe and the nineteenth stop valve are provided at the outer bottom of the fuel tank, which are used to discharge the test medium water back to the external water pool.

[0021] Furthermore, the oil inlet end of the refueling gun is connected to the main refueling pipeline, the return air end is connected to the second oil and gas recovery pipeline, the refueling end is connected to the upper part of the inner cavity of the fuel tank, the main refueling pipeline and the first horizontal storage tank are connected through the first refueling pipeline, and the main refueling pipeline and the second horizontal storage tank are connected through the second refueling pipeline. The main refueling pipeline is provided with a liquid flow meter and a refueling flow regulating valve, and the second oil and gas recovery pipeline is provided with a fifth pressure gauge, a twentieth stop valve, a second gas flow meter, a gas-liquid ratio regulating valve, a liquid resistance regulating valve and a gas vacuum pump along the oil and gas recovery direction.

[0022] Furthermore, the oil and gas discharge device is connected to the upper part of the inner cavity of the first horizontal storage tank through an oil and gas discharge pipeline, and the other end of the oil and gas discharge pipeline is divided into three routes: the first route is a vent pipe; the second route is a breathing pipe, and the third route is an oil and gas processing pipeline. The vent pipe of the oil and gas discharge device is sequentially provided with a twenty-fourth stop valve and a second fire stop cap along the oil and gas discharge direction. The second fire stop cap is a hemispherical metal body. The breathing pipe is sequentially provided with a twenty-fifth stop valve and a breathing valve along the oil and gas discharge direction, and a twenty-second stop valve is provided on the oil and gas processing pipeline.

[0023] Furthermore, the oil and gas processing device is connected to the upper part of the inner cavity of the second horizontal storage tank through an oil return pipeline, and is connected to the upper part of the inner cavity of the second horizontal storage tank through an air return pipeline; it is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for treatment, and a treated air exhaust pipeline is provided on the side, and a first fire arrester is installed at the end of the air exhaust pipeline; the other end of the oil and gas processing pipeline is connected to the oil and gas processing device, and a twenty-second stop valve is connected to the oil and gas processing pipeline; a twenty-third stop valve is connected to the air return pipeline at the top of the oil and gas processing device, and a twenty-first stop valve is connected to the oil return pipeline at the top; the first fire arrester is a hemispherical metal body.

[0024] Furthermore, a third water pump is installed at the inner bottom of the external water pool, and the external water pool is connected to the first horizontal storage tank, the second horizontal storage tank, the oil bin, and the oil tank through a water injection branch pipe, and the water injection branch pipes are respectively provided with a tenth stop valve, an eleventh stop valve, a twelfth stop valve and a thirteenth stop valve. Each water injection branch pipe merges into the water injection main pipe, and the water injection main pipe is provided with a ninth stop valve.

[0025] Furthermore, the first horizontal storage tank and the second horizontal storage tank are both horizontal cylindrical metal tanks with ellipsoidal two sides, the oil bin is a rectangular metal box, the oil tank is a cube metal box, and the oil and gas processing device is a cylindrical metal box.

[0026] Beneficial effects of the utility model:

[0027] The utility model can demonstrate the normal oil and gas recovery operation of a horizontal storage tank during the oil unloading process of a tanker truck, the refueling process of a refueling machine, and the oil storage process in a gas station in a laboratory, and analyze and simulate the corresponding cheating process; it can also demonstrate the gas-liquid ratio adjustment of the refueling gun and the change of the liquid resistance of the oil and gas recovery pipeline.

[0028] The utility model helps to timely discover and prevent cheating in the oil and gas recovery process of gas stations and analyze the cheating mechanism, and can be implemented and promoted in related technical analysis work such as supervision and law enforcement, university teaching, and institutional training. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The utility model is a structural schematic diagram of a gas station horizontal tank oil and gas recovery cheating simulation test system.

[0030] In the figure: 1. First horizontal storage tank; 11. First upper cover; 12. First water pump; 13. First refueling pipeline; 14. First oil unloading pipeline; 15. First oil and gas recovery pipeline; 16. Storage tank connecting pipeline; 17. First stop valve; 18. Second stop valve; 19. Third stop valve; 110. Fourth stop valve; 111. Fifth stop valve; 112. Oil and gas discharge pipeline; 2. Second horizontal storage tank; 21. Second upper cover; 22. Second water pump; 23. Second refueling pipeline; 24. Second oil unloading pipeline; 25. Second oil and gas recovery pipeline Pipeline; 26, eighth stop valve; 27, sixth stop valve; 28, seventh stop valve; 3, external water tank; 31, third water pump; 32, ninth stop valve; 33, tenth stop valve; 34, eleventh stop valve; 35, twelfth stop valve; 36, thirteenth stop valve; 4, oil tank; 41, third upper cover; 42, first gas flow meter; 43, tank truck oil unloading pipeline; 44, tank truck oil and gas recovery pipeline; 45, tank truck air intake pipeline; 46, fourteenth stop valve; 47, fifteenth stop valve; 48, sixteenth stop valve; 49, 17th stop valve; 410, 18th stop valve; 5, fuel tank; 51, fourth upper cover; 52, fueling hole; 53, 19th stop valve; 6, fueling gun; 61, gas vacuum pump; 62, liquid flow meter; 63, second gas flow meter; 64, main fueling line; 65, 20th stop valve; 66, fueling flow regulating valve; 67, gas-liquid ratio regulating valve; 68, liquid resistance regulating valve; 69, fifth pressure gauge; 7, oil and gas processing device; 71, oil return line; 72, air return line; 73, air exhaust line; 74, 20th First stop valve; 75, twenty-second stop valve; 76, twenty-third stop valve; 77, first flame arrester; 8, oil and gas discharge device; 81, ventilation pipe; 82, breathing tube; 83, oil and gas processing pipeline; 84, second flame arrester; 85, breathing valve; 86, twenty-fourth stop valve; 87, twenty-fifth stop valve; 91, first oil and gas space; 92, second oil and gas space; 93, third oil and gas space; 94, fourth oil and gas space; 95, first pressure gauge; 96, second pressure gauge; 97, third pressure gauge; 98, fourth pressure gauge. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] Example 1

[0033] refer to Figure 1 , a gas station horizontal tank oil and gas recovery cheating simulation test system: including:

[0034] The first horizontal storage tank 1 and the second horizontal storage tank 2 are arranged side by side to simulate the underground horizontal storage tanks of a gas station;

[0035] The oil tank 4 is arranged above the first horizontal storage tank 1 and is used to simulate the oil tank of a tanker truck. The oil unloading end of the oil tank 4 is connected to the lower part of the inner cavity of the first horizontal storage tank 1 and the second horizontal storage tank 2 respectively, and the air inlet end of the oil tank 4 is connected to the atmosphere and the upper part of the inner cavity of the first horizontal storage tank 1 and the second horizontal storage tank 2 respectively;

[0036] Fuel tank 5, which is arranged above the second horizontal storage tank 2 and is used to simulate a fuel tank for a social vehicle;

[0037] A refueling gun 6, the oil inlet end of the refueling gun 6 is respectively connected to the lower part of the inner cavity of the first horizontal storage tank 1 and the second horizontal storage tank 2, the air return end of the refueling gun 6 is connected to the upper part of the inner cavity of the second horizontal storage tank 2, and the refueling end of the refueling gun 6 is connected to the upper part of the inner cavity of the fuel tank 5;

[0038] The oil and gas processing device 7 is arranged above the first horizontal storage tank 1 and is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for treatment. One end of the oil and gas processing device 7 is connected to the oil and gas discharge device 8, and the other end is connected to the upper part of the inner cavity of the second horizontal storage tank 2;

[0039] The oil and gas discharge device 8 is arranged above the first horizontal storage tank 1, and one end of the oil and gas discharge device 8 is connected to the upper part of the inner cavity of the first horizontal storage tank 1, and the other end is connected to the oil and gas processing device 7;

[0040] The external water pool 3 is located below the first horizontal storage tank 1 and the second horizontal storage tank 2 and is used to provide and receive test medium water for recycling;

[0041] Among them, the lower parts of the inner cavities of the first horizontal storage tank 1, the second horizontal storage tank 2, the oil bin 4, and the oil tank 5 all store test medium water, and the upper parts of the inner cavities are filled with air. The first horizontal storage tank 1 is connected to the upper part of the second horizontal storage tank 2, and a control valve is provided on the connecting pipeline.

[0042] In this embodiment, the first horizontal storage tank 1 is provided with a first oil unloading pipeline 14 and an oil unloading port A1 connected to the first oil unloading pipeline 14, a first oil and gas recovery pipeline 15 and an oil and gas output port B1 connected to the first oil and gas recovery pipeline 15. A first pressure gauge 95 is provided at the upper part of the inner cavity of the first horizontal storage tank 1, and a first water pump 12 is provided at the bottom of the inner cavity of the first horizontal storage tank 1 to simulate the oil pump in the horizontal storage tank of a gas station; the lower part of the inner cavity of the first horizontal storage tank 1 stores test medium water to simulate the high-grade gasoline in the storage tank; the upper part of the inner cavity is a first oil and gas space 91, and the first oil and gas space 91 is filled with Full of air, used to simulate the volatilized oil and gas in the storage tank, the first water pump 12 is connected to the refueling gun 6 through the first refueling pipeline 13, the first refueling pipeline 13 is provided with a first stop valve 17, one end of the first oil unloading pipeline 14 extends into the bottom of the inner cavity of the first horizontal storage tank 1, and the other end is connected to the oil unloading port A1 through the second stop valve 18, one end of the first oil and gas recovery pipeline 15 extends into the first oil and gas space 91, and the other end is connected to the oil and gas output port B1 through the third stop valve 19, the lower end of the first horizontal storage tank 1 is provided with a fifth stop valve 111, and the upper end of the first horizontal storage tank 1 is provided with a first upper cover 11.

[0043] In this embodiment, the second horizontal storage tank 2 is provided with a second oil unloading pipeline 24 and an oil unloading port A2 connected to the second oil unloading pipeline 24. The upper inner portions of the first horizontal storage tank 1 and the second horizontal storage tank 2 are connected via a tank connecting pipeline 16. A second pressure gauge 96 is provided at the upper inner portion of the second horizontal storage tank 2. A second water pump 22 is provided at the bottom inner portion of the second horizontal storage tank 2 to simulate the oil pump in the horizontal storage tank at a gas station. The lower inner portion of the second horizontal storage tank 2 stores test medium water to simulate low-grade gasoline in the storage tank. The upper inner portion of the second horizontal storage tank 2 is a second oil-gas space 92 filled with air to simulate the storage tank. The oil and gas volatilized in the tank, a fourth stop valve 110 is provided on the tank connecting pipe 16; the second water pump 22 is connected to the refueling gun 6 through the second refueling pipe 23, and the second refueling pipe 23 is provided with a sixth stop valve 27. One end of the second oil unloading pipe 24 extends into the bottom of the inner cavity of the second horizontal storage tank 2, and the other end is connected to the oil unloading port A2 through the seventh stop valve 28. One end of the second oil and gas recovery pipe 25 extends into the second oil and gas space 92 of the second horizontal storage tank 2, and the other end is connected to the return air end of the refueling gun 6. The lower end of the second horizontal storage tank 2 is provided with an eighth stop valve 26, and the upper end of the second horizontal storage tank 2 is provided with a second upper cover 21.

[0044] In this embodiment, a first pressure gauge 95 is used to monitor and display the gas pressure within the first oil-gas space 91; a second pressure gauge 96 is used to monitor and display the gas pressure within the second oil-gas space 92. The first and second oil-gas spaces 91, 92 are connected by a tank connecting line 16, which is provided with a fourth shut-off valve 110. When the first and second upper covers 11, 21 are opened, water from the external water reservoir 3 can be pumped into the tanks. A first water pump 12 and a second water pump 22, as well as a first refueling line 13 and a second refueling line 23, are respectively provided at the bottoms of the two tanks. The first water pump 12 is used to deliver water from the first horizontal tank 1 to the refueling nozzle 6 via the first refueling line 13 and the first shut-off valve 17. The second water pump 22 is used to deliver water from the second horizontal tank 2 to the refueling nozzle 6 via the second refueling line 23 and the sixth shut-off valve 27. Inside the two storage tanks, a first oil unloading pipeline 14, a second oil unloading pipeline 24, a first oil and gas recovery pipeline 15, and a second oil and gas recovery pipeline 25 are respectively installed. One end of the first oil unloading pipeline 14 extends into the bottom of the inner cavity of the first horizontal storage tank 1, and the other end is connected to the oil unloading port A1 via the second shut-off valve 18. One end of the second oil unloading pipeline 24 extends into the bottom of the inner cavity of the second horizontal storage tank 2, and the other end is connected to the oil unloading port A2 via the seventh shut-off valve 28. One end of the first oil and gas recovery pipeline 15 extends into the first oil and gas space 91 of the first horizontal storage tank 1, and the other end is connected to the oil and gas output port B1 via the third shut-off valve 19. One end of the second oil and gas recovery pipeline 25 extends into the second oil and gas space 92 of the second horizontal storage tank 2, and the other end is connected to the return port of the fuel nozzle 6. Drain pipes, a fifth shut-off valve 111, and an eighth shut-off valve 26 are respectively installed at the bottom of the two storage tanks to drain the internal water back to the external water tank 3.

[0045] In this embodiment, the lower end of the oil tank 4 is connected to the tank truck oil unloading pipeline 43 and the oil unloading port A3 connected to the tank truck oil unloading pipeline 43, the upper end of the oil tank 4 is connected to the tank truck air intake pipeline 45, the tank truck air intake pipeline 45 is connected to the tank truck oil and gas recovery pipeline 44 and the oil and gas input port B2 connected to the tank truck oil and gas recovery pipeline 44, the upper part of the inner cavity of the oil tank 4 is provided with a third pressure gauge 97, and the tank truck oil and gas recovery pipeline 44 is provided with a first gas flow meter 42; the lower part of the inner cavity of the oil tank 4 stores test medium water for simulating gasoline in the oil tank 4; the upper part of the inner cavity is a third oil and gas space 93, and the third oil and gas space 94 is provided with a third pressure gauge 97. The air space 93 is filled with air, which is used to simulate the volatilized oil and gas in the oil tank 4; a third upper cover 41 is provided above the oil tank 4, and the tank truck oil unloading pipeline 43 is connected to the oil unloading port A3 through the fourteenth stop valve 46; the tank truck oil and gas recovery pipeline 44, one end of which is connected to the third oil and gas space 93 through the seventeenth stop valve 49, and the other end is connected to the oil and gas input port B2 in sequence through the sixteenth stop valve 48, the first gas flow meter 42, and the fifteenth stop valve 47; one end of the tank truck air intake pipeline 45 is connected to the inlet of the seventeenth stop valve 49, and the other end is connected to the atmosphere through the eighteenth stop valve 410.

[0046] In this embodiment, the third pressure gauge 97 is used to monitor and display the air pressure within the third oil-gas space 93. When the third upper cover 41 is opened, water from the external water pool 3 can be injected into the oil tank 4. A tank truck unloading pipeline 43 is provided at the outer bottom of the oil tank 4, connected to the oil unloading port A3 via the fourteenth shut-off valve 46. The oil tank 4 is also equipped with a tank truck oil-gas recovery pipeline 44, one end of which is connected to the third oil-gas space 93 via the seventeenth shut-off valve 49, and the other end is connected to the oil-gas inlet port B2 via the sixteenth shut-off valve 48, the first gas flowmeter 42, and the fifteenth shut-off valve 47. The first gas flowmeter 42 is used to monitor and display the oil-gas recovery flow rate during the unloading process. A tank truck air intake pipeline is provided at the top of the oil tank 4, one end of which is connected to the inlet of the seventeenth shut-off valve 49 and the other end is connected to the atmosphere via the eighteenth shut-off valve 410.

[0047] In this embodiment, a fourth pressure gauge 98 is provided on the upper part of the fuel tank 5, and a drain pipe is provided at the lower end of the fuel tank 5; the fuel tank 5 is used to simulate the refueling tank of a social vehicle, and is located above the second horizontal storage tank 2. The lower part of the inner cavity of the fuel tank 5 is filled with test medium water, which is used to simulate the gasoline in the fuel tank 5; the upper part of the inner cavity is a fourth oil and gas space 94, and the fourth oil and gas space 94 is filled with air, which is used to simulate the oil and gas volatilized in the fuel tank 5; a fourth upper cover 51 is provided above the fuel tank 5, and a refueling hole 52 is provided on the fourth upper cover 51. A drain pipe and a nineteenth stop valve 53 are provided at the outer bottom of the fuel tank 5, which are used to discharge the test medium water back to the external water pool 3.

[0048] In this embodiment, a fourth pressure gauge 98 is used to monitor and display the air pressure within the fourth oil-gas space 94. A fourth upper cover 51 is provided above the fuel tank 5. When opened, the test medium water from the external reservoir 3 can be injected into the fuel tank 5. A refueling port 52 is provided on the fourth upper cover 51, which is normally sealed with a refueling cap and, when opened, allows refueling from the refueling gun 6. A drain pipe and a nineteenth shut-off valve 53 are provided at the outer bottom of the fuel tank 5 to drain the test medium water back into the external reservoir 3.

[0049] In this embodiment, the refueling gun 6 has an oil inlet end connected to a main refueling pipeline 64, a gas return end connected to a second oil and gas recovery pipeline 25, and a refueling end connected to the upper part of the inner cavity of the fuel tank 5. The main refueling pipeline 64 is connected to the first horizontal storage tank 1 through the first refueling pipeline 13, and the main refueling pipeline 64 is connected to the second horizontal storage tank 2 through the second refueling pipeline 23. A liquid flow meter 62 and a refueling flow regulating valve 66 are provided on the main refueling pipeline 64; a fifth pressure gauge 69, a twentieth stop valve 65, a second gas flow meter 63, a gas-liquid ratio regulating valve 67, a liquid resistance regulating valve 68 and a gas vacuum pump 61 are provided on the second oil and gas recovery pipeline 25 along the oil and gas recovery direction.

[0050] In this embodiment, the refueling gun 6 utilizes a refueling gun with a vapor recovery function, removing safety features such as the disconnect function. Only the main refueling line 64 and the second vapor recovery line 25 remain. One end of the main refueling line is connected to the outlets of the first shutoff valve 17 and the sixth shutoff valve 27, respectively. The other end is connected to the oil inlet of the refueling gun 6 via a liquid flowmeter 62 and a refueling flow control valve 66. The liquid flowmeter 62 simulates a refueling pump flowmeter and is used to display the amount of fuel being refueled in the vehicle. The second vapor recovery line 25 is connected to the return air port of the refueling gun 6 at one end. The other end is connected to the second vapor space 92 of the second horizontal storage tank 2 via a twentieth shutoff valve 65, a second gas flowmeter 63, a gas-to-liquid ratio control valve 67, a liquid resistance control valve 68, and a gas vacuum pump 61. Among them, the second gas flow meter 63 is used to monitor and display the oil and gas recovery flow during the refueling process; the gas vacuum pump 61 is used to suck the oil and gas in the oil tank 5 back to the second oil and gas space 92; the gas-liquid ratio regulating valve 67 is used to fine-tune the gas-liquid ratio of the refueling gun; the liquid resistance regulating valve 68 is used to simulate and adjust the liquid resistance changes in the second oil and gas recovery pipeline 25; a fifth pressure gauge 69 is provided between the return air end of the refueling gun 6 and the twentieth stop valve 65, which is used to measure the gas pressure in the second oil and gas recovery pipeline 25 to reflect the liquid resistance situation; the refueling end gun head of the refueling gun 6 is connected to the upper part of the inner cavity of the oil tank 5 through the refueling hole 52.

[0051] In this embodiment, the oil and gas discharge device 8 is connected to the first horizontal storage tank 1 through the oil and gas discharge pipeline 112 and the upper part of the inner cavity of the first horizontal storage tank 1, and the other end of the oil and gas discharge pipeline 112 is divided into three routes: the first route is the vent pipe 81; the second route is the breathing pipe 82, and the third route is the oil and gas processing pipeline 83. The vent pipe 81 of the oil and gas discharge device 8 is provided with a twenty-fourth stop valve 86 and a second fire stop cap 84 in sequence along the oil and gas discharge direction. The second fire stop cap 84 is a hemispherical metal body. The breathing pipe 82 is provided with a twenty-fifth stop valve 87 and a breathing valve 85 in sequence along the oil and gas discharge direction. The oil and gas processing pipeline 83 is provided with a twenty-second stop valve 75.

[0052] In this embodiment, the oil and gas discharge device 8 consists of an oil and gas discharge pipeline 112, a vent pipe 81, a breathing pipe 82, and an oil and gas processing pipeline 83. One end of the oil and gas discharge pipeline 112 is connected to the first oil and gas space 91, and the other end is divided into three paths: the first path is the vent pipe 81, on which the 24th stop valve 86 and the second flame arrester 84 are installed in sequence, using a hemispherical metal body for simulation; the second path is the breathing pipe 82, on which the 25th stop valve 87 and the breathing valve 85 are installed in sequence. The breathing valve 85 is used to automatically adjust the pressure of the oil and gas space in the storage tank to maintain internal and external pressure balance; and the third path is the oil and gas processing pipeline 83, which is connected to the inlet of the 22nd stop valve 75 of the oil and gas processing device 7.

[0053] In this embodiment, the oil and gas processing device 7 is connected to the upper part of the inner cavity of the second horizontal storage tank 2 through the return oil pipeline 71, and is connected to the upper part of the inner cavity of the second horizontal storage tank 2 through the return air pipeline 72; it is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for treatment. A treated air discharge pipeline 73 is provided on the side, and a first fire stop cap 77 is installed at the end of the air discharge pipeline 73; the other end of the oil and gas processing pipeline 83 is connected to the oil and gas processing device 7, and the oil and gas processing pipeline 83 is connected to the twenty-second stop valve 75; the return air pipeline 72 at the top of the oil and gas processing device 7 is connected to the twenty-third stop valve 76, and the return oil pipeline 71 at the top is connected to the twenty-first stop valve 74; the first fire stop cap 77 is a hemispherical metal body.

[0054] In this embodiment, the oil and gas processing device 7 uses a cylindrical metal box to simulate the oil and gas processing device of a gas station, and a twenty-second stop valve 75 is connected to the bottom oil and gas processing pipeline 83 thereof, which is used to simulate the discharge of the oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for treatment; a twenty-third stop valve 76 is connected to the bottom return air pipeline 72 thereof, which is used to simulate the discharge of the treated oil and gas back to the second oil and gas space 92; a twenty-first stop valve 74 is connected to the top return oil pipeline thereof, which is used to simulate the discharge of the treated liquid gasoline into the second horizontal storage tank 2 with a low grade; a first flame arrester 77 is installed at the end of the top air exhaust pipeline 73 thereof, and a hemispherical metal body is used for simulation.

[0055] In this embodiment, a third water pump 31 is installed at the inner bottom of the external water pool 3, and the external water pool 3 is connected to the first horizontal storage tank 1, the second horizontal storage tank 2, the oil bin 4, and the oil tank 5 through a water injection branch pipe. The water injection branch pipes are respectively provided with a tenth stop valve 33, an eleventh stop valve 34, a twelfth stop valve 35, and a thirteenth stop valve 36. Each water injection branch pipe merges into the water injection main pipe, and the water injection main pipe is provided with a ninth stop valve 32.

[0056] In this embodiment, the external water pool 3 is located below the first horizontal storage tank 1 and the second horizontal storage tank 2, and is used to provide and receive test medium water for circulation. A third water pump 31 is installed at the bottom of the external water pool to inject water into each test assembly through the ninth stop valve 32, the tenth stop valve 33, the eleventh stop valve 34, the twelfth stop valve 35, and the thirteenth stop valve 36.

[0057] In this embodiment, the first horizontal storage tank 1 and the second horizontal storage tank 2 are both horizontal cylindrical metal tanks with ellipsoidal two sides, the oil tank 4 is a rectangular metal box, the oil tank 5 is a cube metal box, and the oil and gas processing device 7 is a cylindrical metal box.

[0058] Preferably, the first horizontal storage tank 1 and the second horizontal storage tank 2 have the same specifications, a tank length of 5m, an inner diameter of 1m, and a capacity of about 4m 3The length, width and height of the oil tank 4 are 2m, 1m and 1m respectively, with a capacity of 2m 3 ; The side length of the fuel tank 5 cube is 30cm and the capacity is 27L.

[0059] Example 2

[0060] This embodiment provides a method for using a gas station horizontal tank oil vapor recovery cheating simulation test system, using the gas station horizontal tank oil vapor recovery cheating simulation test system provided in Example 1, and the steps include:

[0061] Before the test, all components of the device were connected, with the fourth shut-off valve 110 and the twenty-fifth shut-off valve 87 open and all other valves closed. A certain amount of test medium water was pre-stored in the external water reservoir 3. The first, second, third, and fourth upper covers 11, 21, 41, and 51 were opened. The third water pump 31 and ninth shut-off valve 32 were then opened, followed by the tenth, thirteenth, eleventh, and twelfth shut-off valves 33, 36, 34, and 35. A certain amount of test medium water was injected into the first horizontal storage tank 1, the second horizontal storage tank 2, the oil silo 4, and the oil tank 5, respectively, to simulate the normal state of each component. The third water pump 31, ninth shut-off valve 32, all water inlet valves, and the upper covers were then closed.

[0062] After the test, the water in the oil tank 4 is first discharged into the first horizontal storage tank 1 through the tank truck unloading pipeline 43 and the first unloading pipeline 14, and then the fifth stop valve 111, the eighth stop valve 26, and the nineteenth stop valve 53 are opened respectively to discharge the water into the external water pool 3.

[0063] In this embodiment, during normal refueling at a public gas station, the ratio of the volume of gas collected by the refueling gun to the volume of gasoline added to the tank is called the gas-to-liquid ratio, and is required to be between 1.0 and 1.2. This device simulates the volume of gas collected by the refueling gun 6 using a second gas flowmeter 63 and the volume of gasoline added to the tank 5 using a liquid flowmeter 62. If the gas-to-liquid ratio of the refueling gun 6 does not meet the refueling gas recovery requirements, the gas-to-liquid ratio control valve 67 can be fine-tuned to re-verify the gas-to-liquid ratio until it meets the requirements.

[0064] In this embodiment, during normal refueling at a public gas station, the refueling vapor recovery pipeline may experience resistance due to condensate retention or other factors, causing the flow of recovered gas through the pipeline. This resistance is known as fluid resistance. This device simulates and adjusts the fluid resistance within the second vapor recovery pipeline 25 using a fluid resistance regulating valve 68, and visually measures this resistance change using a fifth pressure gauge 69.

[0065] Example 3

[0066] This example demonstrates the correct operation process of oil unloading and oil gas recovery and simulates the cheating process:

[0067] Demonstration of correct operation process

[0068] The following demonstrates unloading oil from the tanker truck's oil bunker into the first horizontal storage tank 1. Using flexible hoses, connect oil unloading ports A1 and A3, oil and gas output port B1, and oil and gas input port B2. Close the eighteenth shut-off valve 410, and open the sixteenth, seventeenth, and fifteenth shut-off valves 48, 49, 47, and third shut-off valve 19 to connect the first oil and gas space 91 with the third oil and gas space 93. Open the second shut-off valve 18, then slowly open the fourteenth shut-off valve 46, controlling the oil unloading flow rate to drain the water from the oil bunker 4 into the first horizontal storage tank 1. During the oil unloading process, the water level in the oil tank 4 continues to drop, and the third oil and gas space 93 tends to increase continuously. However, the water level in the first horizontal storage tank 1 continues to rise, and the first oil and gas space 91 tends to decrease continuously. This increases the air pressure in the first oil and gas space 91. Under the action of pressure, the air in this space is discharged into the third oil and gas space 93 through the tank truck oil and gas recovery pipeline 44, which just compensates for the increase in the third oil and gas space 93. The first gas flowmeter 42 can monitor and display the oil and gas recovery flow rate during this oil unloading process. Similarly, the oil unloading operation to the second horizontal storage tank 2 can also be simulated by connecting A1 and the oil unloading port A2 respectively through a hose. Other operations are similar. Through this oil unloading and oil and gas recovery method, the third oil and gas space 93 maintains a relative pressure balance with the first oil and gas space 91 or the second oil and gas space 92, and there is no leakage of oil and gas.

[0069] Cheating process simulation

[0070] Close the sixteenth shut-off valve 48, open the eighteenth shut-off valve 410 and the seventeenth shut-off valve 49, and operate the system as normal. At this point, the first gas flowmeter 42 monitors that there is no air flowing in the tank truck's oil vapor recovery line 44. As the water level in the oil tank 4 continuously decreases during oil unloading, the increasing volume in the third oil vapor space 93 is compensated by the atmosphere through the tank truck's air intake line 45. As the water level in the first horizontal storage tank 1 or the second horizontal storage tank continuously rises, the air pressure in the first oil vapor space 91 or the second oil vapor space 92 increases. If the air pressure reaches the exhalation pressure threshold of the breathing valve 85 (e.g., 2 kPa), the air is discharged from the breathing valve 85 to the atmosphere. If the twenty-fourth shut-off valve 86 is opened beforehand, the air in the first oil vapor space 91 or the second oil vapor space 92 is discharged directly to the atmosphere through the vent pipe 81, which accelerates the drainage of the oil tank 4. During operation, the first pressure gauge 95, the second pressure gauge 96, and the third pressure gauge 97 monitor and display the gas pressure in each oil vapor space.

[0071] In reality, cheaters, fearing operational complications and slowing down the unloading process, intentionally open the upper cover of the oil tank 4 or other exhaust pipes (e.g., opening the 18th shut-off valve 410), using atmospheric pressure to expel the gasoline from the tank 4. This inevitably causes some of the gasoline to be discharged directly into the atmosphere. Simultaneously, under the influence of the gasoline pressure in the first gasoline and gasoline space 91, the breathing valve 85 remains in an exhalation state, continuously discharging some of the gasoline from the tank to the atmosphere. If the cheaters had opened the 24th shut-off valve 86 beforehand, all of the gasoline from the tank would have been discharged directly into the atmosphere during the unloading process. This cheating method causes serious air pollution, wastes resources, and poses a safety hazard.

[0072] Example 4

[0073] This example demonstrates the correct operation process of the refueling oil vapor recovery process and simulates the cheating process:

[0074] Demonstration of correct operation process

[0075] The following demonstrates refueling a private vehicle's fuel tank 5 using a gas station nozzle 6. The fuel tank 5's fuel cap is opened, and the nozzle 6 is inserted into the fueling port 52 and tightly connected to prevent leakage of fuel and gas. The 20th shut-off valve 65 is opened, and the refueling flow regulating valve 66, gas-to-liquid ratio regulating valve 67, and liquid resistance regulating valve 68 are maintained at a certain opening. The first water pump 12 and the first shut-off valve 17 are turned on to simulate the process of injecting high-grade gasoline from the first horizontal storage tank 1 into the nozzle 6. Simultaneously, the gas vacuum pump 61 is turned on. During refueling, the water level in the fuel tank 5 continuously rises, causing the fourth oil-vapor space 94 to decrease, increasing the air pressure within it. Meanwhile, the water level in the first horizontal storage tank 1 continuously decreases, causing the first oil-vapor space 91 to increase, decreasing the air pressure within it. The air in the fourth oil-vapor space 94 is then pumped back into the second oil-vapor space 92 by the gas vacuum pump 61 through the second oil-vapor recovery line 25, and then returned to the first oil-vapor space 91 through the tank connecting line 16, effectively compensating for the increase in the air pressure within the first oil-vapor space 91. The second gas flowmeter 63 can monitor and display the oil-vapor recovery flow rate during this refueling process. Similarly, a simulation can be performed to simulate the process of injecting low-grade gasoline from the second horizontal storage tank 2 into the fueling nozzle 6, by turning on the second water pump 22 and the sixth shut-off valve 27, with other similar operations. This refueling oil-vapor recovery method maintains relative pressure equilibrium between the fourth oil-vapor space 94 and either the first or second oil-vapor space 91, preventing oil and gas leakage.

[0076] Cheating process simulation

[0077] During refueling, if the 20th shut-off valve 65 is closed or the gas vacuum pump 61 is not activated, the air in the fourth oil-gas space 94 cannot be drawn back into the tank's oil-gas space via the second oil-gas recovery line 25. To ensure refueling speed, the refueling gun 6 is kept loosely connected to the refueling port 52, allowing the air in the fuel tank 5 to be discharged to the atmosphere. If the air pressure in the first oil-gas space 91 drops to the suction pressure threshold of the breathing valve 85 (e.g., -1.5 kPa), the air is discharged from the outside into the tank through the breathing valve 85. If the 24th shut-off valve 86 is opened beforehand, the air is discharged directly from the outside into the tank through the vent pipe 81, which can speed up refueling. During operation, the gas pressure of each oil-gas space can be monitored and displayed using the first pressure gauge 95, the second pressure gauge 96, and the fourth pressure gauge 98.

[0078] In reality, cheaters deliberately close the second oil and gas recovery pipeline 25 or do not start the gas vacuum pump 61 in order to save the maintenance costs of oil and gas recovery components such as the vacuum pump and the electricity required for operation, so that the oil and gas in the oil tank 5 cannot be recovered to the oil and gas space of the storage tank; at the same time, the refueling gun 6 and the refueling hole 52 are kept in a loose connection state, and the oil and gas in the oil tank 5 are discharged to the atmosphere, causing air pollution; at the same time, external air enters the storage tank through the breathing valve 85 or the ventilation pipe 81, increasing the gas pressure in the storage tank space and the workload of the oil and gas processing device.

[0079] Example 5

[0080] This example demonstrates the correct operation process of storing oil and gas and simulates the cheating process:

[0081] Demonstration of correct operation process

[0082] The twenty-fourth shut-off valve 86 should be in a normally closed state and can only be opened during maintenance or certain testing conditions. Under normal circumstances, the gas pressure in the first oil-gas space 91 indicated by the first pressure gauge 95 or the gas pressure in the second oil-gas space 92 indicated by the second pressure gauge 96 is between the inhalation pressure threshold and the exhalation pressure threshold of the breathing valve 85 (e.g., -1.5kPa to 2kPa). In extremely special circumstances, when the gas pressure in the first oil-gas space 91 or the second oil-gas space 92 reaches the inhalation pressure threshold or the exhalation pressure threshold of the breathing valve 85 (e.g., below -1.5kPa or above 2kPa), the insufficient pressure will be compensated by the intake of external air through the breathing valve 85 or the excess pressure will be discharged to the atmosphere through the breathing valve 85, thereby ensuring the pressure safety in the tank.

[0083] Cheating process simulation

[0084] In practice, cheaters intentionally leave shutoff valve 86 open to facilitate unloading or refueling fraud. Furthermore, when breathing valve 85 malfunctions, some cheaters, unwilling to promptly repair it, simply leave shutoff valve 86 open, acting as breathing valve 85. This causes the readings on first and second pressure gauges 95 and 96 to approach zero. This fraudulent method renders the oil and gas processing unit inoperable, causing all oil and gas to be discharged directly into the atmosphere, resulting in severe air pollution, waste of resources, and safety hazards.

[0085] Example 6

[0086] This example demonstrates the correct operation process of the oil and gas processing process and simulates the cheating process:

[0087] Demonstration of correct operation process

[0088] The twenty-first shut-off valve 74, the twenty-second shut-off valve 75, and the twenty-third shut-off valve 76 should be open, indicating that the oil and gas processing device 7 is functioning normally. The oil and gas processing device 7 receives oil and gas at a certain pressure (e.g., 150 Pa) from the first oil and gas space 91 via the oil and gas discharge line 112. The treated liquid gasoline is recovered via the oil return line 71 to the second horizontal storage tank 2 of a lower grade. The treated oil and gas is then discharged back to the second oil and gas space 92. The treated fresh air is discharged to the atmosphere via the air discharge line 73. This shows that under normal circumstances, when the oil and gas pressure in the storage tank has not yet reached the exhalation pressure threshold of the breathing valve 85, the oil and gas has already been recovered and processed by the oil and gas processing device. Therefore, oil and gas are rarely discharged into the atmosphere through the breathing valve 85.

[0089] Cheating process simulation

[0090] In reality, in order to save the operating and maintenance costs of the oil and gas processing equipment, cheaters deliberately close the 22nd stop valve 75 and the 23rd stop valve 76, rendering the oil and gas processing device ineffective. This cheating method causes the oil and gas pressure in the storage tank to often reach the exhalation pressure threshold of the breathing valve 85, causing part of the oil and gas to be discharged into the atmosphere, causing air pollution.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A gas station horizontal tank oil and gas recovery cheating simulation test system, characterized in that: include: The first horizontal storage tank and the second horizontal storage tank are arranged side by side to simulate the underground horizontal storage tanks of a gas station; An oil tank is provided above the first horizontal storage tank and is used to simulate the oil tank of a tanker truck. The oil unloading end of the oil tank is respectively connected to the lower part of the inner cavity of the first horizontal storage tank and the second horizontal storage tank, and the air inlet end of the oil tank is respectively connected to the atmosphere, the first horizontal storage tank and the upper part of the second horizontal storage tank; A fuel tank, which is arranged above the second horizontal storage tank and is used to simulate a fuel tank for a social vehicle; a refueling gun, wherein the oil inlet end of the refueling gun is respectively connected to the lower inner portions of the first horizontal storage tank and the second horizontal storage tank, the air return end of the refueling gun is connected to the upper inner portion of the second horizontal storage tank, and the refueling end of the refueling gun is connected to the upper inner portion of the fuel tank; An oil and gas processing device is provided above the first horizontal storage tank and is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for processing, and one end of the oil and gas processing device is connected to the upper part of the inner cavity of the second horizontal storage tank; an oil and gas discharge device, the oil and gas discharge device being arranged above the first horizontal storage tank, with one end being in communication with the upper portion of the inner cavity of the first horizontal storage tank, and the other end being in communication with the oil and gas processing device; an external water tank, located below the first horizontal storage tank and the second horizontal storage tank, for providing and receiving test medium water for circulation; The lower parts of the first horizontal storage tank, the second horizontal storage tank, the oil bin, and the oil tank all store test medium water, and the upper parts of the inner cavities are all filled with air. The upper parts of the first horizontal storage tank and the second horizontal storage tank are connected, and a control valve is provided on the connecting pipeline.

2. A gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1, characterized in that: The first horizontal storage tank is provided with a first oil unloading pipeline and an oil unloading port A1 connected to the first oil unloading pipeline, a first oil and gas recovery pipeline and an oil and gas output port B1 connected to the first oil and gas recovery pipeline. A first pressure gauge is provided at the upper portion of the inner cavity of the first horizontal storage tank. A first water pump is provided at the bottom portion of the inner cavity of the first horizontal storage tank to simulate the oil pump in the horizontal storage tank of a gas station. The lower portion of the inner cavity of the first horizontal storage tank stores test medium water to simulate the high-grade gasoline in the storage tank. The upper portion of the inner cavity is a first oil and gas space, and the first oil and gas space is filled with air. Used to simulate the volatilization of oil and gas in the storage tank, the first water pump is connected to the refueling gun through a first refueling pipeline, and a first stop valve is provided on the first refueling pipeline. One end of the first oil unloading pipeline extends into the bottom of the inner cavity of the first horizontal storage tank, and the other end is connected to the oil unloading port A1 through a second stop valve. One end of the first oil and gas recovery pipeline extends into the first oil and gas space, and the other end is connected to the oil and gas output port B1 through a third stop valve. The lower end of the first horizontal storage tank is provided with a fifth stop valve, and the upper end of the first horizontal storage tank is provided with a first upper cover.

3. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: The second horizontal storage tank is provided with a second oil unloading pipeline and an oil unloading port A2 connected to the second oil unloading pipeline. The upper inner cavity of the first horizontal storage tank and the second horizontal storage tank are connected through a tank connecting pipeline. The upper inner cavity of the second horizontal storage tank is provided with a second pressure gauge. The bottom inner cavity of the second horizontal storage tank is provided with a second water pump for simulating the oil pump in the horizontal storage tank of a gas station. The lower inner cavity of the second horizontal storage tank stores test medium water for simulating low-grade gasoline in the storage tank. The upper inner cavity is a second oil and gas space, and the second oil and gas space is filled with air for simulating the volatile oil in the storage tank. gas, a fourth stop valve is provided on the tank connecting pipeline; the second water pump is connected to the fueling gun through a second fueling pipeline, a sixth stop valve is provided on the second fueling pipeline, one end of the second oil unloading pipeline extends into the bottom of the inner cavity of the second horizontal storage tank, and the other end is connected to the oil unloading port A2 through a seventh stop valve, the second oil and gas space of the second horizontal storage tank is connected to a second oil and gas recovery pipeline, the other end of the second oil and gas recovery pipeline is connected to the return air end of the fueling gun, the lower end of the second horizontal storage tank is provided with an eighth stop valve, and the upper end of the second horizontal storage tank is provided with a second upper cover.

4. A gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1, characterized in that: The lower end of the oil tank is connected to the tank truck oil unloading pipeline and the oil unloading port A3 connected to the tank truck oil unloading pipeline, the upper end of the oil tank is connected to the tank truck air intake pipeline, the tank truck air intake pipeline is connected to the tank truck oil and gas recovery pipeline and the oil and gas input port B2 connected to the tank truck oil and gas recovery pipeline, the upper part of the inner cavity of the oil tank is provided with a third pressure gauge, and the tank truck oil and gas recovery pipeline is provided with a first gas flow meter; the lower part of the inner cavity of the oil tank stores test medium water for simulating gasoline in the oil tank; the upper part of the inner cavity is a third oil and gas space, the first The three oil and gas spaces are filled with air to simulate the volatilized oil and gas in the oil tank; a third upper cover is provided above the oil tank, and the tank truck oil unloading pipeline is connected to the oil unloading port A3 through the fourteenth stop valve; the tank truck oil and gas recovery pipeline, one end of which is connected to the third oil and gas space through the seventeenth stop valve, and the other end is connected to the oil and gas input port B2 in sequence through the sixteenth stop valve, the first gas flow meter, and the fifteenth stop valve; one end of the tank truck air intake pipeline is connected to the inlet of the seventeenth stop valve, and the other end is connected to the atmosphere through the eighteenth stop valve.

5. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: A fourth pressure gauge is provided on the upper part of the fuel tank, and a drain pipe is provided at the lower end of the fuel tank; the fuel tank is used to simulate a social vehicle refueling tank and is located above the second horizontal storage tank. The lower part of the inner cavity of the fuel tank is filled with test medium water, which is used to simulate the gasoline in the fuel tank; the upper part of the inner cavity is a fourth oil and gas space, which is filled with air and is used to simulate the oil and gas volatilized in the fuel tank; a fourth upper cover is provided above the fuel tank, and a refueling hole is provided on the fourth upper cover. The drain pipe and the nineteenth stop valve are provided at the outer bottom of the fuel tank, which are used to discharge the test medium water back to the external water pool.

6. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: The oil inlet end of the refueling gun is connected to the main refueling pipeline, the return air end is connected to the second oil and gas recovery pipeline, and the refueling end is connected to the upper part of the inner cavity of the fuel tank. The main refueling pipeline is connected to the first horizontal storage tank through the first refueling pipeline, and the main refueling pipeline is connected to the second horizontal storage tank through the second refueling pipeline. A liquid flow meter and a refueling flow regulating valve are provided on the main refueling pipeline. A fifth pressure gauge, a twentieth stop valve, a second gas flow meter, a gas-liquid ratio regulating valve, a liquid resistance regulating valve and a gas vacuum pump are provided on the second oil and gas recovery pipeline along the oil and gas recovery direction.

7. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: The oil and gas discharge device is connected to the upper part of the inner cavity of the first horizontal storage tank through an oil and gas discharge pipeline, and the other end of the oil and gas discharge pipeline is divided into three routes: the first route is a vent pipe; the second route is a breathing pipe, and the third route is an oil and gas processing pipeline. The vent pipe of the oil and gas discharge device is sequentially provided with a twenty-fourth stop valve and a second fire stop cap along the oil and gas discharge direction. The second fire stop cap is a hemispherical metal body. The breathing pipe is sequentially provided with a twenty-fifth stop valve and a breathing valve along the oil and gas discharge direction. A twenty-second stop valve is provided on the oil and gas processing pipeline.

8. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 7 is characterized in that: The oil and gas processing device is connected to the upper part of the inner cavity of the second horizontal storage tank through an oil return pipeline, and is connected to the upper part of the inner cavity of the second horizontal storage tank through an air return pipeline; it is used to simulate the discharge of oil and gas in the oil and gas space of the storage tank into the oil and gas processing device for treatment, and a treated air exhaust pipeline is provided on the side, and a first fire stop cap is installed at the end of the air exhaust pipeline; the other end of the oil and gas processing pipeline is connected to the oil and gas processing device, and a twenty-second stop valve is connected to the oil and gas processing pipeline; a twenty-third stop valve is connected to the air return pipeline at the top of the oil and gas processing device, and a twenty-first stop valve is connected to the oil return pipeline at the top; the first fire stop cap is a hemispherical metal body.

9. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: A third water pump is installed at the inner bottom of the external water pool. The external water pool is connected to the first horizontal storage tank, the second horizontal storage tank, the oil bin, and the oil tank through water injection branch pipes. The tenth stop valve, the eleventh stop valve, the twelfth stop valve, and the thirteenth stop valve are respectively provided on the water injection branch pipes. Each water injection branch pipe merges into the water injection main pipe, and the water injection main pipe is provided with a ninth stop valve.

10. The gas station horizontal tank oil and gas recovery cheating simulation test system according to claim 1 is characterized in that: The first horizontal storage tank and the second horizontal storage tank are both horizontal cylindrical metal tanks with ellipsoidal two sides, the oil bin is a rectangular metal box, the oil tank is a cube metal box, and the oil and gas processing device is a cylindrical metal box.

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