A secondary oil and gas recovery device for a gas station and its online monitoring system

Abstract

The present invention discloses a secondary oil and gas recovery device for a gas station and an online monitoring system thereof, comprising an oil gun, an oil tank, and a recovery device, wherein the oil gun and the recovery device are both connected to the oil tank, and a monitor is installed in the oil tank to monitor the air pressure in the oil tank through the monitor; the recovery device comprises a condensation tank, an air compressor, and a filter tank. In the present invention, the positive and negative rotations of the air compressor can be controlled to form a corresponding linkage effect between a closing mechanism and a discharge port. When the condensation tank is pressurized by the air compressor, the closing mechanism and the discharge port will close automatically, and there is no need for coordination through another mechanism, so that the space in the condensation tank can exist independently of the oil tank, so that the oil and gas recovery work will not affect the normal operation of the oil tank, and the air compressor can also be used to create a negative pressure in the condensation tank, to extract the air from the pump to the condensation tank, and to filter it through the filter tank, thereby effectively solving the technical problems raised in the background technology.

Description

Technical Field

[0001] The present invention relates to the field of oil and gas recovery devices, in particular to a secondary oil and gas recovery device for a gas station and an online monitoring system thereof. Background Art

[0002] Environmental protection, as a basic national policy of our country, has received more and more attention from people. At present, photochemical pollution caused by volatile organic compounds has become an important environmental problem faced by some cities in our country. With the development of the national economy, the number of cars has increased significantly, and the number of gas stations has also continued to increase, making the problem of oil and gas pollution increasingly prominent. The evaporation of oil products at gas stations also causes huge waste of resources and economic losses, and with the continuous rise in oil prices, this part of the economic losses continues to expand. In order to reduce this part of the economic losses, the existing technology generally uses oil and gas recovery devices at gas stations;

[0003] Although some recovery devices in the prior art are equipped with a method of condensing the oil molecules in the oil and gas into liquid by means of supercharging, when the pressurized liquid oil is condensed, the supercharger will squeeze the gas outside the fuel tank into the fuel tank, but this part of the gas cannot be discharged in time, causing the oil and gas recovered from the vehicle by the oil gun to mix with the gas when flowing back into the fuel tank, and it is impossible to effectively recover the mixed gas. In addition, the mixed gas will be mixed with the odor of oil and gas and cannot be filtered and purified, which makes it easy for the odor to spread around, affecting the working environment of the staff. Summary of the Invention

[0004] The present invention provides a secondary oil and gas recovery device for a gas station and an online monitoring system thereof, which overcomes the deficiencies described in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A secondary oil and gas recovery device for a gas station comprises an oil gun, an oil tank, and a recovery device, wherein the oil gun and the recovery device are both connected to the oil tank, and a monitor is installed in the oil tank to monitor the air pressure in the oil tank through the monitor; the recovery device comprises a condensation tank, an air compressor, and a filter tank, the output end of the air compressor is connected to the upper part of a closing mechanism, and the input end is connected to the upper end of the filter tank, and the condensation tank is provided with a closing mechanism, a deodorizing layer, a condensation layer, and a discharge port from top to bottom, the closing mechanism is connected to the upper end of the oil tank, the lower end of the condensation tank gradually deepens from the edge to the middle, and the discharge port located in the middle of the lower end of the condensation tank is connected to the upper end of the oil tank through a pump; the output shaft of the air compressor passes through the condensation tank and extends obliquely downward.

[0007] A preferred technical solution: the closing mechanism includes a sealing shell and a swinging sealing plate, the swinging sealing plate is movably installed in the sealing shell through a torsion shaft, and the edge of the swinging sealing plate is against the inner side of the sealing shell; a stop block is provided on the circumference of the torsion shaft, and a limit block is provided on the outside of the sealing shell near the stop block.

[0008] A preferred technical solution: the sealing shell is provided with an abutment plate near the swinging sealing plate, and the corresponding part of the swinging sealing plate and the abutment plate has an inwardly recessed groove, which abuts against the lower end surface of the abutment plate when the swinging sealing plate is parallel; the opposite surfaces of the groove and the abutment plate are respectively provided with a repelling magnet sheet.

[0009] A preferred technical solution: A sealing rubber sheet is provided on the side of the swing sealing plate away from the abutting plate, and one side surface of the sealing rubber sheet is connected to the swing sealing plate, while the remaining side surfaces are connected to the inner side surface of the closing mechanism to form a covering shape.

[0010] A preferred technical solution: the surfaces of the swing sealing plate and the abutting plate both have a plurality of through holes staggered with each other. When the swing sealing plate is not abutting against the abutting plate, the through holes on their respective surfaces are connected to form a flow channel for gas to flow through.

[0011] A preferred technical solution: A rubber breathable layer and a leakage plate are provided in the discharge port. The surfaces of the rubber breathable layer and the leakage plate both have holes, and the holes on the surfaces of the two are staggered. In addition, an arc-shaped protrusion is provided on the left and right sides of the upper end of the leakage plate. When the air compressor is working to increase the pressure in the condensation tank, the rubber breathable layer adheres to the surface of the leakage plate as the pressure increases.

[0012] A preferred technical solution: an airflow regulating member is sleeved on the input shaft connecting the air compressor and the filter tank, an regulating ball is movably provided in the airflow regulating member, a sealing block is provided in the airflow regulating member near the regulating ball, and the regulating ball is clamped on the sealing block;

[0013] The surface of the adjusting ball is provided with a rotating shaft, a curved hole and a through hole, and the side of the airflow adjusting member is provided with an opening. The two ends of the curved hole are respectively connected to the upper end and the side of the adjusting ball, and the two ends of the through hole are respectively connected to the left and right sides of the adjusting ball. When the curved hole is rotated to be coaxial with the adjusting ball, the curved hole is connected to the opening.

[0014] An online monitoring system for a secondary oil and gas recovery device at a gas station, the online monitoring system comprising:

[0015] The monitoring module is provided in the monitor and is provided with an air pressure monitoring mechanism to monitor the air pressure in the fuel tank through the air pressure monitoring mechanism;

[0016] The early warning module presets the pressure threshold of the air pressure in the fuel tank and is signal-connected to the air pressure detection mechanism in the monitoring module.

[0017] The control module is provided with a plurality of control submodules, which are respectively arranged in the air compressor and the pump, and all the control submodules are connected to the early warning module signal.

[0018] Compared with the background technology, this technical solution has the following advantages:

[0019] In the present invention, the forward and reverse rotation of the air compressor can be controlled to form a corresponding linkage effect between the closing mechanism and the discharge port. When the condensate tank is pressurized by the air compressor, the closing mechanism and the discharge port will close automatically, and there is no need to cooperate with other mechanisms. The space in the condensate tank can exist independently of the oil tank, so that the oil and gas recovery work will not affect the normal operation of the oil tank. In addition, the air compressor can also be used to create a negative pressure in the condensate tank, and the air in the condensate tank from the pump is extracted and filtered through the filter tank, thereby effectively solving the technical problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 Schematic diagram of the recovery device 3.

[0023] Figure 3 Schematic diagram of the closing mechanism 311.

[0024] Figure 4 It is a partial half-section schematic diagram of the closing mechanism 311.

[0025] Figure 5 It is a top view of the swing sealing plate 3112.

[0026] Figure 6 Schematic diagram of the discharge port 314.

[0027] Figure 7 Schematic diagram of the airflow adjustment member 321.

[0028] Figure 8 It is a half-section schematic diagram of the airflow adjustment member 321.

[0029] Figure 9 Schematic top view of the adjustment ball 322.

[0030] In the figure: oil gun 1, oil tank 2, recovery device 3, condensation tank 31, closing mechanism 311, sealing shell 3111, limit block 31111, swing sealing plate 3112, slot 31121, torsion shaft 1121, abutment block 11211, abutment plate 3113, sealing rubber sheet 3114, deodorizing layer 312, condensation layer 313, discharge port 314, rubber breathable layer 3141, leakage plate 3142, air compressor 32, air flow adjustment member 321, sealing block 3211, opening 3212, adjustment ball 322, rotating shaft 3221, curved hole 3222, through hole 3223, pump 33, filter tank 34, monitor 4. DETAILED DESCRIPTION

[0031] like Figure 1-9 As shown, a secondary oil and gas recovery device for a gas station includes an oil gun 1, an oil tank 2, and a recovery device 3. The oil gun 1 and the recovery device 3 are both connected to the oil tank 2, and a monitor 4 is installed in the oil tank 2 to monitor the air pressure in the oil tank 2 through the monitor 4; the recovery device 3 includes a condensation tank 31, an air compressor 32, and a filter tank 34. The output end of the air compressor 32 is connected to the upper part of the condensation tank 31, and the input end is connected to the upper end of the filter tank 34. The condensation tank 31 is provided with a closing mechanism 311, a deodorizing layer 312, a condensation layer 313 and a discharge port 314 from top to bottom. The closing mechanism 311 is connected to the oil tank 2. The upper end of the tank 2 is connected, the lower end of the condensation tank 31 gradually deepens from the edge to the middle, and the discharge port 314 located in the middle of the lower end of the condensation tank 31 is connected to the upper end of the fuel tank 2 through a pump 33; the output shaft of the air compressor 32 passes through the condensation tank 31 and extends obliquely downward. When the present invention is used, the gasoline in the fuel tank 2 is poured into the fuel tank of the car through the oil gun 1, and the oil and gas in the fuel tank are returned to the fuel tank 2. Since the oil and gas are relatively light in weight, when they flow into the condensation tank 31 along the connection of the closing mechanism 311, they will float on the upper part of the condensation tank 31, and when the amount of gasoline in the fuel tank 2 increases, the space for oil and gas will be squeezed.

[0032] When the oil and gas need to be recovered for the second time, the air pressure in the condensation tank 31 can be increased by the air compressor 32, so that the oil and gas in the condensation tank 31 are condensed into liquid gasoline. As shown in the figure, a deodorizing layer 312 and a condensing layer 313 are provided in the condensation tank 31. When the air compressor 32 applies pressure to the condensation tank 31, the oil and gas in the condensation tank 31 will be squeezed downward, away from the output shaft direction of the air compressor 32. When the oil and gas pass through the deodorizing layer 312 and the condensing layer 313, multi-layer filtration will be formed, and the density will increase in the condensing layer 313 until it condenses into liquid gasoline. The condensing layer 313 is filled with cotton and other materials with the function of absorbing oil, water molecules and the like in the existing technology. When the liquid gasoline drips down along the condensing layer 313, it will continue to accumulate on the surface of the discharge port 314 until the discharge port 314 is opened and extracted by the pump 33.

[0033] Furthermore, the closing mechanism 311 includes a sealing shell 3111 and a swinging sealing plate 3112. The swinging sealing plate 3112 is movably installed in the sealing shell 3111 through a torsion shaft 1121, and the edge of the swinging sealing plate 3112 abuts against the inner side of the sealing shell 3111. A stop block 11211 is provided on the circumference of the torsion shaft 1121, and a limit block 31111 is provided on the outer side of the sealing shell 3111 near the stop block 11211, and an abutting plate 3113 is provided on the sealing shell 3111 near the swinging sealing plate 3112. The corresponding portion of the swing sealing plate 3112 and the abutting plate 3113 has an inwardly recessed slot 31121, which abuts against the lower end surface of the abutting plate 3113 when the swing sealing plate 3112 is parallel. A repelling magnet is provided on the opposite surface of the slot 31121 and the abutting plate 3113. The purpose of providing the closing mechanism 311 is to close the condensation tank 31 when the air compressor 32 is pressurizing the condensation tank 31, so as to prevent the air pressure from mixing with the oil tank 2 and thus affecting the secondary recovery effect of the oil and gas. The working principle of the closing mechanism 311 is described in detail below:

[0034] When the air compressor 32 is pressurized, the air flow will squeeze the lower end surface of the swing sealing plate 3112, and Figure 5 As shown, the torsion shaft 1121 deviates from the central axis of the swing sealing plate 3112 and is set to the left, so that the swing sealing plate 3112 is divided into two parts, left and right, by the torsion shaft 1121, and the area of ​​the right part is larger than the left part, and a torsion spring is provided in the torsion shaft 1121. When the air compressor 32 is working and pressurized, the swing sealing plate 3112 will be blown close to the abutment plate 3113. What needs to be explained at this time is that the swing sealing plate 3112 is only slightly tilted, and there is no large gap between it and the abutment plate 3113, and the tilted state of the swing sealing plate 3112 is also due to the effect of the repelling magnets, which separate the two, and as long as there is a The point gap can allow the oil and gas in the oil tank 2 to flow into the condensation tank 31 through the closing mechanism 311. Therefore, the function of the abutment 11211 and the limit block 31111 is to limit the swing angle of the swing sealing plate 3112 so that it can only swing to an angle that can be closed when the air compressor 32 is pressurized. Even if there are repelling magnet pieces, the swing sealing plate 3112 will be pressed against the surface of the abutment plate 3113 by pressure. That is, the pressure generated by the air compressor 32 is greater than the repulsive force of the two repelling magnet pieces. When the swing sealing plate 3112 is closed, the condensation tank 31 is in a closed state. At this time, the continuous pressurization of the air compressor 32 will cause the oil and gas to condense into liquid gasoline.

[0035] The cam 3114 is provided with a sealing rubber sheet 3114 on the side of the swing sealing plate 3112 away from the abutting plate 3113, and one side of the sealing rubber sheet 3114 is connected to the swing sealing plate 3112, while the other sides are connected to the inner side of the closing mechanism 311 to form a covering shape. The purpose of such a setting is to cover the swing sealing plate 3112 with the inner side of the closing mechanism 311 when the swing sealing plate 3112 swings and forms a gap with the inner side of the closing mechanism 311, thereby avoiding the flow of air at this place. The surfaces of the swing sealing plate 3112 and the abutting plate 3113 both have a plurality of through holes staggered with each other. When the swing sealing plate 3112 does not abut against the abutting plate 3113, the through holes on their respective surfaces are connected to form a flow channel for gas to flow through. The purpose of such a setting is to increase the flow of gas after the swing sealing plate 3112 is opened, and after the swing sealing plate 3112 and the abutting plate 3113 abut against each other, the through holes on the surfaces of the two are closed at the same time, thereby increasing the air flow rate while maintaining air tightness.

[0036] Furthermore, a rubber breathable layer 3141 and a leakage plate 3142 are provided in the discharge port 314. The surfaces of the rubber breathable layer 3141 and the leakage plate 3142 are both provided with holes, and the holes on the surfaces of the two surfaces are staggered. In addition, an arc-shaped protrusion is provided on the left and right sides of the upper end of the leakage plate 3142. When the air compressor 32 works to increase the pressure in the condensation tank 31, the rubber breathable layer 3141 is attached to the surface of the leakage plate 3142 as the pressure increases, and as shown in the figure, the leakage The sides of the plate 3142 gradually bulge towards the middle. When the air compressor 32 increases the pressure, the rubber breathable layer 3141 will adhere to the surface of the leakage plate 3142 due to the air pressure, and the holes on the surfaces of the two will be staggered. At this point, the closing mechanism 311 and the discharge port 314 can be closed simultaneously when the air compressor 32 increases the pressure, so that a closed space is formed in the condensation tank 31, and the space of the condensation tank 31 exists independently of the fuel tank 2. When the air compressor 32 increases the pressure and condenses the liquid gasoline, it will not affect the air pressure in the fuel tank 2.

[0037] The air flow regulating member 321 is sleeved on the input shaft connecting the air compressor 32 and the filter tank 34, and an air flow regulating member 321 is provided with an adjusting ball 322 movably provided in the air flow regulating member 321, and a sealing block 3211 is provided in the air flow regulating member 321 near the adjusting ball 322, and the adjusting ball 322 is clamped on the sealing block 3211; the surface of the adjusting ball 322 is provided with a rotating shaft 3221, a curved hole 3222 and a through hole 3223, and the side surface of the air flow regulating member 321 has an opening 3212, the two ends of the curved hole 3222 are respectively connected to the upper end and the side surface of the adjusting ball 322, and the two ends of the through hole 3223 are respectively connected to the left and right sides of the adjusting ball 322. When the curved hole 3222 is rotated to be coaxial with the adjusting ball 322, the curved hole 3222 is connected to the opening 3212. Based on this, the specific use method of the air flow regulating member 321 is introduced below:

[0038] When positive pressure needs to be created by the air compressor 32, the adjusting ball 322 can be rotated to the curved hole 3222 to connect with the opening 3212 through the rotating shaft 3221. When negative pressure needs to be created by the air compressor 32, the adjusting ball 322 can be rotated to the through hole 3223 to be horizontal, so that the air compressor 32 is connected with the filter tank 34 through the through hole 3223. It should be explained that this application does not introduce and limit the specific internal structure of the filter tank 34. It only needs to meet the requirements of a filtering mechanism that can filter exhaust gas and odor. The purpose of using the air compressor 32 to create negative pressure is to extract the odor and air with impurities in the condensation tank 31 and discharge them after filtering through the filter tank 34. Example 2

[0039] This embodiment provides an online monitoring system for a secondary oil and gas recovery device at a gas station. The online monitoring system includes:

[0040] A monitoring module is provided in the monitor 4 and is provided with an air pressure monitoring mechanism to monitor the air pressure in the fuel tank 2 through the air pressure monitoring mechanism;

[0041] The early warning module presets the pressure threshold of the air pressure in the fuel tank 2 and is signal-connected to the air pressure detection mechanism in the monitoring module.

[0042] The control module is provided with a plurality of control submodules, which are respectively arranged in the air compressor 32 and the pump 33, and all the control submodules are connected to the early warning module signal.

[0043] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A secondary oil and gas recovery device for a gas station, characterized by: The oil gun (1), the oil tank (2), and the recovery device (3) are both connected to the oil tank (2), and a monitor (4) is installed in the oil tank (2) to monitor the air pressure in the oil tank (2) through the monitor (4); The recovery device (3) includes a condensation tank (31), an air compressor (32), and a filter tank (34). The output end of the air compressor (32) is connected to the upper part of the condensation tank (31), and the input end is connected to the upper end of the filter tank (34). The condensation tank (31) is provided with a closing mechanism (311), a deodorizing layer (312), a condensation layer (313), and a discharge port (314) in order from top to bottom. The closing mechanism (311) is connected to the upper end of the oil tank (2). The lower end of the condensation tank (31) gradually deepens from the edge to the middle, and the discharge port (314) located in the middle of the lower end of the condensation tank (31) is connected to the upper end of the oil tank (2) through a pump (33). The output shaft of the air compressor (32) passes through the condensation tank (31) and extends obliquely downward. The closing mechanism (311) includes a sealing shell (3111) and a swing sealing plate (3112). The swing sealing plate (3112) is movably installed in the sealing shell (3111) through a torsion shaft (1121), and the edge of the swing sealing plate (3112) abuts against the inner side of the sealing shell (3111); A stop block (11211) is provided on the circumferential surface of the torsion shaft (1121), and a limit block (31111) is provided on the outer side of the sealing shell (3111) near the stop block (11211); The sealing housing (3111) is provided with an abutting plate (3113) near the swing sealing plate (3112), and a corresponding portion of the swing sealing plate (3112) and the abutting plate (3113) has an inwardly recessed slot (31121) which abuts against the lower end surface of the abutting plate (3113) when the swing sealing plate (3112) is parallel. A repelling magnet sheet is respectively provided on the opposing surfaces of the slot (31121) and the abutment plate (3113).

2. A secondary oil and gas recovery device for a gas station according to claim 1, characterized in that: A sealing rubber sheet (3114) is provided on the side of the swing sealing plate (3112) away from the abutting plate (3113), and one side surface of the sealing rubber sheet (3114) is connected to the swing sealing plate (3112), while the remaining side surfaces are connected to the inner side surface of the closing mechanism (311) to form a covering shape.

3. The secondary oil and gas recovery device for a gas station according to claim 2, characterized in that: The surfaces of the swing sealing plate (3112) and the abutting plate (3113) are provided with a plurality of through holes staggered with each other. When the swing sealing plate (3112) is not abutting against the abutting plate (3113), the through holes on their respective surfaces are connected to form a flow channel for gas to flow through.

4. A secondary oil and gas recovery device for a gas station according to any one of claims 1 to 3, characterized in that: A rubber breathable layer (3141) and a seepage plate (3142) are provided in the discharge port (314). The surfaces of the rubber breathable layer (3141) and the seepage plate (3142) are both provided with holes, and the holes on the surfaces of the two surfaces are staggered. In addition, an arc-shaped protrusion is provided on the left and right sides of the upper end of the seepage plate (3142). When the air compressor (32) works to increase the pressure in the condensation tank (31), the rubber breathable layer (3141) adheres to the surface of the seepage plate (3142) as the pressure increases.

5. The secondary oil and gas recovery device for a gas station according to claim 4, characterized in that: An airflow regulating member (321) is sleeved on an input shaft connecting the air compressor (32) and the filter tank (34), an regulating ball (322) is movably provided in the airflow regulating member (321), a sealing block (3211) is provided in the airflow regulating member (321) near the regulating ball (322), and the regulating ball (322) is clamped on the sealing block (3211); The surface of the regulating ball (322) is provided with a rotating shaft (3221), a curved hole (3222) and a through hole (3223), and the side surface of the airflow regulating member (321) is provided with an opening (3212). The two ends of the curved hole (3222) are respectively connected to the upper end and the side surface of the regulating ball (322), while the two ends of the through hole (3223) are respectively connected to the left and right sides of the regulating ball (322). When the curved hole (3222) is rotated to be coaxial with the regulating ball (322), the curved hole (3222) is connected to the opening (3212).

6. An online monitoring system for a secondary oil and gas recovery device at a gas station according to any one of claims 1 to 5, characterized in that: The online monitoring system includes: A monitoring module is provided in the monitor (4), and an air pressure monitoring mechanism is provided in the monitoring module to monitor the air pressure in the oil tank (2) through the air pressure monitoring mechanism; The early warning module presets the pressure threshold of the air pressure in the fuel tank (2) and is connected to the air pressure detection mechanism in the monitoring module by signal; A control module is provided with a plurality of control submodules, the control submodules are respectively arranged in the air compressor (32) and the pump (33), and all the control submodules are connected to the early warning module signal.

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