Oil gas recovery device and recovery system for oil gas tank

Abstract

The utility model discloses an oil gas recovery device and recovery system for an oil gas tank, the oil gas tank comprises a first oil gas tank and a second oil gas tank, the device further comprises a first control box and a second control box, and the first control box comprises an oil gas recovery component; the first control box is located at a first position, the input end of the oil gas recovery component is connected with the first oil gas tank, and the output end of the oil gas recovery component is connected with the second oil gas tank and used for recovering oil gas; the second control box is located at a second position, and the second control box is electrically connected with the first control box; the oil gas recovery device further comprises a first explosion-proof box, and the first explosion-proof box is arranged on the outer side of the first control box in a covering mode or arranged in the first control box. According to the scheme, the control box and the outdoor host are located in different areas, so that the operation condition of the outdoor host can be observed through the display screen of the control box in the area far away from the outdoor host, and the safety performance is improved.

Description

Technical Field

[0001] This disclosure generally relates to the field of petroleum technology. More specifically, this disclosure relates to an oil and gas recovery device and system for oil and gas tanks. Background Technology

[0002] Petroleum and its various products are mixtures of various hydrocarbons. During the unloading, storage, and sale of petroleum products, oil and gas evaporation and leakage are unavoidable. Evaporated and leaked oil and gas are mixtures of hydrocarbons and air, precursors to chemical pollution and ozone formation. This not only pollutes the atmosphere but also wastes resources and poses safety hazards. Recovering oil and gas can reduce atmospheric pollution and achieve the goal of environmental protection.

[0003] In related oil and gas recovery systems, the control box and oil and gas recovery components are typically located outdoors. Furthermore, the control box and the outdoor unit may even be situated in the same area. Specifically, the outdoor unit is often installed near oil and gas storage and loading / unloading areas, where oil and gas concentrations are relatively high, creating a flammable and explosive hazardous environment. If the control box and the outdoor unit are located together, in the event of an oil and gas leak, the oil and gas can easily enter the control box. The control box contains various electrical components, such as switches, relays, and circuit boards. Even a tiny spark generated by these components while they are powered on could trigger a violent explosion upon encountering a high concentration of oil and gas, causing devastating damage to the equipment and endangering the lives of nearby personnel. Moreover, when personnel need to operate the control box or check the system temperature and parameters, they face the risk of the oil and gas recovery components exploding, as the control box and the oil and gas recovery components may be located in the same area.

[0004] In view of this, there is an urgent need to provide a solution for an oil and gas recovery device and system for oil and gas tanks, which can place the control box and the outdoor unit in different areas so that the operation of the outdoor unit can be observed through the display screen of the control box in an area far away from the outdoor unit, thereby improving safety performance. Utility Model Content

[0005] In order to at least solve one or more of the technical problems mentioned above, this disclosure proposes a scheme for an oil and gas recovery device and recovery system for oil and gas tanks in several aspects.

[0006] In a first aspect, this disclosure provides an oil and gas recovery device for an oil and gas tank, the oil and gas tank including a first oil and gas tank and a second oil and gas tank, the device further including a first control box and a second control box, the first control box including an oil and gas recovery component; the first control box is located in a first position, the input end of the oil and gas recovery component is connected to the first oil and gas tank, and the output end of the oil and gas recovery component is connected to the second oil and gas tank for recovering oil and gas; the second control box is located in a second position, and the second control box is electrically connected to the first control box; the oil and gas recovery device further includes a first explosion-proof box, the first explosion-proof box being disposed outside the first control box or disposed inside the first control box.

[0007] In some embodiments, the oil and gas recovery component includes an input pipe, an output pipe, and a discharge pipe; one end of the input pipe is connected to a first oil and gas tank, and the other end of the input pipe is connected to the input end of the oil and gas recovery component; one end of the output pipe is connected to a second oil and gas tank, and the other end of the output pipe is connected to the output end of the oil and gas recovery component; one end of the discharge pipe is connected to the discharge end of the oil and gas recovery component, and the other end of the discharge pipe penetrates the outer shell of the first control box and extends outward for discharging gas from the oil and gas.

[0008] In some embodiments, the first control box further includes a junction box, which includes one or more sensors disposed on the input pipe, output pipe and / or discharge pipe.

[0009] In some embodiments, the junction box further includes a junction box body, which is electrically connected to the sensor.

[0010] In some embodiments, the sensor includes a pressure sensor, a concentration sensor, a flow sensor, and / or a temperature sensor.

[0011] In some embodiments, the second control box includes a work platform and a display screen, the display screen being protruding from the work platform.

[0012] In some embodiments, the second control box further includes an emergency stop button, which is disposed on the working platform and on the same side as the display screen.

[0013] In some embodiments, the device further includes a second explosion-proof enclosure, wherein the second explosion-proof partition is disposed on the outside of the second control enclosure.

[0014] In some embodiments, the first control box is made of metal or composite material.

[0015] In a second aspect, this disclosure provides a recovery system comprising any of the oil and gas recovery devices for oil and gas tanks in the first aspect.

[0016] With the oil and gas recovery device and recovery system for oil and gas tanks provided above, the disclosed solution enables the first control box and the second control box to be located in different areas, so that the operation of the first control box can be observed in real time through the display screen of the second control box in an area far away from the first control box, which can improve safety performance. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0018] Figure 1 An exemplary block diagram of an oil and gas recovery device according to some embodiments of this disclosure is shown;

[0019] Figure 2 An exemplary block diagram of a first control box according to some embodiments of this disclosure is shown;

[0020] Figure 3 An exemplary block diagram of a first control box according to other embodiments of this disclosure is shown;

[0021] Figure 4a An exemplary front view of a second control box according to some embodiments of this disclosure is shown; and

[0022] Figure 4b An exemplary structural diagram of a second control box according to other embodiments of this disclosure is shown. Detailed Implementation

[0023] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0024] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0026] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0027] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0028] Figure 1 An exemplary block diagram of an oil and gas recovery device according to some embodiments of this disclosure is shown. Figure 1 As shown, the oil and gas tank includes a first oil and gas tank 1 and a second oil and gas tank 2. The device also includes a first control box 10 and a second control box 20. The first control box 10 includes an oil and gas recovery component 11. The first control box 10 is located in a first position, the input end of the oil and gas recovery component 11 is connected to the first oil and gas tank, and the output end of the oil and gas recovery component 11 is connected to the second oil and gas tank for recovering oil and gas. The second control box 20 is located in a second position and is electrically connected to the first control box 10. The oil and gas recovery device also includes a first explosion-proof box, which is either placed outside the first control box 10 or located inside the first control box.

[0029] In some embodiments, the first location can be an outdoor area, the second location can be an indoor area, the first control box can be located in the outdoor area, and the second control box can be located in the indoor area. In some embodiments, the first explosion-proof box is made of metal or composite material.

[0030] In some embodiments, the aforementioned oil and gas tanks may include above-ground tanks and underground tanks. Above-ground tanks may be located above ground, with their structure completely exposed to the external environment. Above-ground tanks are easy to install, maintain, and inspect. For example, maintenance personnel can directly operate and maintain the external equipment of the tank (such as valves, level gauges, etc.) without the complex operations such as excavation required for underground tanks. Underground tanks can be installed below ground level, possessing stable fire and explosion-proof capabilities, reducing the safety distance between storage tanks and adjacent buildings, saving land resources, and lowering the overall project cost.

[0031] Preferably, both the first oil and gas tank 1 and the second oil and gas tank 2 can be buried underground. These buried tanks are covered by soil, providing a natural fire barrier. In the event of a fire, surface flames are unlikely to directly contact the tank body, and the soil effectively blocks heat transfer, preventing the oil inside from exploding due to a sudden temperature rise. Furthermore, their underground location minimizes interference from external fire sources. Sparks such as static electricity generated during vehicle operation or accidental collisions are unlikely to directly affect the buried tank, thus reducing the possibility of an explosion caused by external fire sources. Finally, if a leak occurs, the soil can absorb and limit the spread of the leaked oil. This prevents the formation of a flammable mixture from large-scale oil evaporation, avoiding the risk of explosion, and also reduces the large-scale pollution caused by the oil leak to the surrounding environment. Furthermore, the first oil and gas tank 1 can be a high-grade buried oil tank, and the second oil and gas tank 2 can be a low-grade buried oil tank.

[0032] In some embodiments, the first control box 10 can be configured as a prism or cuboid, and an outdoor unit can be housed inside it. The outdoor unit may include an oil and gas recovery component 11. Specifically, the first control box 10 can be located near the source of oil and gas generation, such as the oil storage tanks and refueling islands at a gas station. This reduces the length of the oil pipeline, thereby lowering costs.

[0033] Understandably, the concentration of oil and gas in the air surrounding the first control box 10 is relatively high. The outer casing of the first control box can be designed to be explosion-proof, such as using an explosion-proof metal casing, which has good explosion-proof and fire-resistant properties, can withstand internal explosions under certain pressure, and prevent flames from spreading to the surrounding environment, thereby preventing oil and gas leaks from encountering an ignition source and causing an explosion or fire.

[0034] In other embodiments, the second control box 20 may include an indoor control box, which may be a computer or a data processing device, such as a processor, memory, controller and / or relay.

[0035] In some embodiments, the first control box may be located in a first position. Specifically, the input end of the oil and gas recovery component 11 may be connected to a first oil and gas tank, and the output end of the oil and gas recovery component 11 may be connected to a second oil and gas tank. The mixed oil and gas that evaporates from the first oil and gas tank can flow into the second oil and gas tank through the oil and gas recovery component 11. In some embodiments, the first control box may be located outdoors.

[0036] In some embodiments, the second control box 20 can be electrically connected to the first control box 10. The second control box can be located in a second position, which is different from the first position. It is understood that the second control box 20 can be installed indoors, which avoids the influence of harsh outdoor environments. The relatively stable indoor temperature and humidity effectively extend the service life of the electronic components inside the control box. Simultaneously, due to its distance from oil and gas sources, the indoor oil and gas concentration is low, reducing the risk of explosions or fires caused by oil and gas. Furthermore, the influence of harsh outdoor environments is avoided. The relatively stable indoor temperature and humidity effectively extend the service life of the electronic components inside the second control box. Simultaneously, due to its distance from oil and gas sources, the indoor oil and gas concentration is low, reducing the risk of explosions or fires caused by oil and gas, providing a good guarantee for the safe operation of the second control box.

[0037] In some embodiments, the first explosion-proof enclosure may be installed on the outside of the first control box 10 or disposed inside the first control box 10.

[0038] Specifically, the aforementioned first explosion-proof enclosure can be installed on the outside of the first control box 10. When the area where the first control box 10 is located is subjected to an oil and gas explosion, the first explosion-proof enclosure can effectively block the powerful shock wave generated by the explosion from spreading to the first control box 10. The aforementioned first explosion-proof enclosure can be made of special alloy steel or composite materials with explosion-proof properties. This material has a compact structure and can withstand instantaneous high-pressure impacts, ensuring that the precision electronic components, circuit boards and / or mechanical parts inside the first control box are protected from direct physical damage. It can maintain the basic operating functions of the first control box and prevent the entire oil and gas recovery device from being paralyzed due to damage to key components.

[0039] In other embodiments, the first explosion-proof enclosure may also be disposed inside the first control box. Specifically, the first explosion-proof enclosure may include an explosion-proof junction box, which may be disposed inside the first control box. Further, the explosion-proof junction box may encapsulate electrical components. Even further, the aforementioned electrical components may be electrical components that generate electrical sparks. By encapsulating the aforementioned electrical components that generate electrical sparks within the explosion-proof junction box, an explosion-proof effect can be achieved, thereby ensuring that the first control box can reach a preset safety explosion-proof level.

[0040] Understandably, the first explosion-proof enclosure can be made of metal or composite materials. In the event of an explosion that ignites a flame, the first explosion-proof enclosure can serve as a reliable fire barrier. Its surface undergoes special treatment, giving it excellent flame retardancy. Once flames come into contact with the partition, they are difficult to penetrate and cannot spread freely into the room.

[0041] By setting the first control box and the second control box in different areas, the operating status of the first control box (e.g., the outdoor unit) can be viewed in real time through the second control box (e.g., the indoor control box) in areas far away from the first control box. When an alarm occurs, the indoor staff can be promptly alerted to shut down the machine and perform inspection and maintenance on the first control box, thereby improving safety performance.

[0042] Figure 2 An exemplary block diagram of a first control box according to some embodiments of this disclosure is shown. Figure 2 As shown, the oil and gas recovery component 11 includes an input pipe 111, an output pipe 112, and a discharge pipe 113. One end of the input pipe 111 is connected to the first oil and gas tank, and the other end of the input pipe 111 is connected to the input end of the oil and gas recovery component 11. One end of the output pipe 112 is connected to the second oil and gas tank, and the other end of the output pipe 112 is connected to the output end of the oil and gas recovery component 11. One end of the discharge pipe 113 is connected to the discharge end of the oil and gas recovery component 11, and the other end of the discharge pipe 113 penetrates the outer shell of the first control box 10 and extends outward for discharging gas from the oil and gas.

[0043] In some embodiments, the oil and gas recovery component 11 may include an input pipe 111, the first end of which may extend into the first oil and gas tank and maintain a predetermined distance from the oil inside it, wherein one end of the input pipe may be the end of the input pipe that is close to the liquid oil inside the first oil and gas tank.

[0044] In some embodiments, when one end of the input pipe is closer to the oil surface, the oil vapors evaporating from the oil surface can be collected more effectively, as proximity to the oil surface allows for capture before the vapors diffuse. However, if the input pipe 111 is too close to the oil surface, there is a risk of liquid entering the input pipe. If the liquid level in the oil tank fluctuates drastically or an unexpected oil surge occurs, oil may enter the input pipe 111. Once liquid enters the input pipe 111, it can damage subsequent oil vapor recovery equipment. Furthermore, if a large amount of liquid oil enters the input pipe 111, it will also affect the recovery efficiency of the oil vapor recovery component 11 and the oil vapor recovery rate.

[0045] In other embodiments, when the first end of the input pipe is far from the oil surface, the input pipe 111 may miss some of the oil and gas generated near the oil surface, especially when the oil and gas generation rate is fast or the oil and gas diffusion rate is slow. This will lead to a decrease in oil and gas recovery efficiency, with more oil and gas remaining in the oil tank and eventually being released into the atmosphere, thereby reducing the efficiency of oil and gas recovery and failing to meet environmental protection requirements.

[0046] By setting the first preset distance as described above, the oil and gas recovery component 11 can prevent liquid oil from entering the input pipeline and thus damaging the device in the oil and gas recovery component 11. In addition, it can also prevent environmental pollution caused by oil and gas being emitted into the air and the decrease in oil and gas recovery efficiency.

[0047] In some embodiments, the other end of the input pipe can be the end of the input pipe 111 that is away from the liquid petroleum inside the first oil and gas tank. The other end of the input pipe can be connected to the input end of the oil and gas recovery component by means of welding, flange connection or compression fitting.

[0048] In some embodiments, after the mixed oil and gas passes through the oil and gas recovery component 11, low-concentration oil and gas and high-concentration oil and gas that meet emission standards can be obtained. The high-concentration oil and gas can flow into the second oil and gas tank 2 through the output pipe 112, and the low-concentration oil and gas that meets emission standards can be discharged to the outside of the housing of the first control box 10 through the discharge pipe 113. Further, along the direction from the oil and gas recovery component 11 to the direction away from the oil and gas recovery component 11 on the discharge pipe 113, one or more of an exhaust pump 1132, a solenoid valve 1131, and a flame arrester cap 1133 may be respectively provided on the discharge pipe 113.

[0049] Specifically, the aforementioned solenoid valve 1131 can control the opening and closing of the discharge pipe 113. When the oil and gas recovery device is operating normally and needs to discharge treated low-concentration oil and gas that meets emission standards, the solenoid valve can open, allowing the low-concentration oil and gas that meets emission standards to be smoothly discharged into the atmosphere through the discharge pipe 113. When the oil and gas recovery device does not need to discharge the low-concentration oil and gas that meets emission standards, for example, in key processing stages such as adsorption and condensation in oil and gas recovery, or in case of abnormal situations (such as when the external environment is not suitable for discharging the aforementioned low-concentration oil and gas), the solenoid valve can close, preventing the discharge of the low-concentration oil and gas, thereby ensuring the sealing and safety of the oil and gas recovery process. Furthermore, the aforementioned exhaust pump 1132 can provide power for controlling the discharge of low-concentration oil and gas in the discharge pipe 113 through mechanical work. In addition, the exhaust pump 1132 can also be used to adjust the flow rate and speed of the aforementioned low-concentration oil and gas discharge. The aforementioned flame arrestor cap 1133 can be used to prevent external ignition sources generated due to sudden situations from entering the discharge pipe 113, thereby improving the safety of the oil and gas recovery device.

[0050] By incorporating the aforementioned solenoid valve, exhaust pump, and flame arrestor, the sealing performance and safety of the oil and gas recovery device can be improved.

[0051] Figure 3 An exemplary block diagram of a first control box according to other embodiments of this disclosure is shown. Figure 3 As shown, the first control box 10 further includes a junction box 12, which includes one or more sensors 121. The sensors 121 are disposed on the input pipe 111, the output pipe 112, and / or the discharge pipe 113. In some embodiments, the junction box 12 further includes a junction box body 122, which is electrically connected to the sensor 121.

[0052] In some embodiments, the aforementioned sensor 121 may include a pressure sensor, a concentration sensor, a flow sensor, and / or a temperature sensor.

[0053] Specifically, a pressure sensor can be installed on the input pipe 111 to detect the pressure in the input pipe 111 and the first vapor recovery tank 1. Understandably, when a tanker truck unloads fuel at a gas station, the pressure of the mixed vapor in the first vapor recovery tank 1 increases with the amount of fuel unloaded. Furthermore, when a gas station refuels a vehicle, the fuel nozzle recovers the mixed vapor from the vehicle's fuel tank into the first vapor recovery tank 1, and its internal pressure also increases with the recovery of vapor. When the pressure in the first vapor recovery tank 1 reaches a preset pressure (e.g., 500 Pa), the vapor recovery device can begin operation.

[0054] Furthermore, a concentration sensor can be installed on the discharge pipe 113 (e.g., between the exhaust pump 1132 and the flame arrester 1133) to detect the concentration of low-concentration oil and gas in the discharge pipe 113, thereby preventing explosions due to excessive pressure. A flow sensor can be installed on the input pipe 111 and the output pipe 112 to detect the flow rate of the mixed oil and gas entering the input pipe 111 and the flow rate of petroleum gas in the output pipe 112. This helps to obtain the recovery efficiency of the treated oil and gas. In addition, the parameters of various components in the oil and gas recovery device can be adjusted according to the flow rate at different locations to improve the oil and gas recovery efficiency. A temperature sensor can be installed in the input pipe 111, the output pipe 112, and the discharge pipe 113, or it can be installed within the oil and gas recovery device itself. By installing a temperature sensor, it is possible to detect whether the oil and gas recovery device is operating normally. When the equipment malfunctions (e.g., pipe blockage, decreased heat exchanger efficiency, motor overload, etc.), abnormal temperature changes may occur. By analyzing the data from the temperature sensor, these abnormal temperature changes can be detected, thus helping maintenance personnel determine the type and location of the fault.

[0055] In some embodiments, the junction box body can be configured in a prism or cube shape, and the interior of the junction box body 122 can house data acquisition components and / or control components (e.g., a PLC controller and a remote controller). Furthermore, the junction box body can be electrically connected to a sensor, or to an oil and gas recovery device and a second control box. Even further, the exterior of the junction box can also be fitted with an explosion-proof enclosure.

[0056] By incorporating an explosion-proof design into the junction box, safety accidents such as explosions or leaks can be avoided, thus improving the safety performance of the oil and gas recovery device. Furthermore, the junction box centralizes the cables for all components, resulting in a neat and tidy appearance, reducing wiring workload, and facilitating maintenance.

[0057] Figure 4a An exemplary front view of a second control box according to some embodiments of this disclosure is shown. Figure 4b An exemplary structural diagram of a second control box according to other embodiments of this disclosure is shown. Figure 4a and Figure 4b As shown, the second control box 20 includes a main body 21 and a display screen 22, the display screen 22 protruding from the main body 21. The display screen can be a color touch screen, which can intuitively display system operating status, data and other information, and at the same time facilitate technicians to perform touch operations to complete system parameter settings and other tasks.

[0058] In some embodiments, the second control box 20 further includes an emergency stop button 23, which is disposed on the main body 21 of the device and on the same side as the display screen 22.

[0059] In some embodiments, the second control box 20 may be configured as an integral structure (e.g., Figure 4a It can also be configured as a modular composite structure (e.g.) Figure 4b When the second control box 20 is an integrated structure, it can be mounted on a wall at the second location or placed on the ground. A display screen 22 can be protruding from the side of the aforementioned device body 21, wherein the side with the display screen 22 can be the first side of the device body. It is understood that the display screen 22 can be located at the top of the first side of the device body for easy viewing and use by personnel. In some embodiments, the emergency stop button 23 can also be located on the first side of the device body.

[0060] Furthermore, the emergency stop button 23 can be located at the bottom of the first side of the equipment body to prevent accidental activation of the emergency stop button 23, which could lead to unnecessary equipment stoppage, affecting the continuity of oil and gas recovery operations and damaging the oil and gas recovery device. In other embodiments, the second control box 20 can be configured as a split-type assembly. Specifically, the equipment body 21 can include a support part 211 and a working platform 212. The support part 211 can be connected to the bottom of the working platform 212, and the aforementioned support part 211 can be used to support the working platform 212. Furthermore, the top of the support part 211 can be movably connected to the bottom of the working platform 212 (e.g., a slide rail slider connection or a cylinder connection), so that the height of the working platform 212 can be adjusted. It is understood that the side of the working platform 212 away from the support part 211 can be the first side 2121 of the working platform, and the emergency stop button 23 can be located on the first side 2121 of the working platform, so that it can be easily pressed in time in case of an emergency.

[0061] In some embodiments, the display screen 22 can also be disposed on the first side 2121 of the work platform, wherein the display screen 22 can be configured as a touch screen. Specifically, the display screen 22 can be movably connected to the work platform 212 (e.g., via a slide rail or cylinder connection), or can be rotatably connected to the work platform 212 (e.g., via a pivot-bearing connection), allowing the display screen 22 to adjust its height and angle. Furthermore, the display screen 22 can be configured as a touch screen.

[0062] It is understood that the aforementioned device may also include a second explosion-proof enclosure, which may be disposed outside the second control box 20 and can be used to limit the range of an explosion. When a fire or explosion occurs outside the second control box 20, the second explosion-proof enclosure disposed outside the second control box 20 can protect the second control box 20. When a user operates the second control box from the surrounding area, it can provide the user with a safe time, thereby improving safety.

[0063] The well-designed layout of the aforementioned display screen and emergency stop button allows users to control the second control box efficiently and safely.

[0064] This disclosure also provides a recovery system, which may include an oil and gas recovery device for an oil and gas tank as described above. The system may also include an oil and gas filtration device, which may be disposed between the oil and gas recovery device and the first oil and gas tank, and may be used to filter impurities to improve the efficiency of oil and gas recovery.

[0065] In summary, the disclosed solution allows the first and second control boxes to be located in different areas. This enables real-time monitoring of the first control box (e.g., the outdoor unit)'s operational status from an area far from the outdoor unit via the second control box (e.g., an indoor control box). In case of an alarm, indoor personnel can be promptly alerted to shut down the system and perform inspections and maintenance on the outdoor unit, thus improving safety performance. Furthermore, the placement of sensors can enhance the efficiency of oil and gas recovery, as well as the safety and sealing of the oil and gas recovery device.

[0066] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An oil and gas recovery device for an oil and gas tank, the oil and gas tank comprising a first oil and gas tank (1) and a second oil and gas tank (2), characterized in that, The device also includes a first control box (10) and a second control box (20), wherein the first control box (10) includes an oil and gas recovery component (11); The first control box (10) is located in the first position, the input end of the oil and gas recovery component (11) is connected to the first oil and gas tank, and the output end of the oil and gas recovery component (11) is connected to the second oil and gas tank for recovering oil and gas; The second control box (20) is located in the second position and is electrically connected to the first control box (10); the oil and gas recovery device also includes a first explosion-proof box, which is covered on the outside of the first control box (10) or located inside the first control box (10).

2. The apparatus according to claim 1, characterized in that, The oil and gas recovery unit (11) includes an input pipe (111), an output pipe (112), and a discharge pipe (113); One end of the input pipe (111) is connected to the first oil and gas tank, and the other end of the input pipe (111) is connected to the input end of the oil and gas recovery unit (11). One end of the output pipe (112) is connected to the second oil and gas tank, and the other end of the output pipe (112) is connected to the output end of the oil and gas recovery component (11). One end of the discharge pipe (113) is connected to the discharge end of the oil and gas recovery component (11), and the other end of the discharge pipe (113) passes through the outer shell of the first control box (10) and extends outward to discharge the gas in the oil and gas.

3. The apparatus according to claim 2, characterized in that, The first control box (10) also includes a junction box (12), which includes one or more sensors (121) and the sensors (121) are disposed on the input pipe (111), the output pipe (112) and / or the discharge pipe (113).

4. The apparatus according to claim 3, characterized in that, The junction box (12) also includes a junction box body (122), which is electrically connected to the sensor (121).

5. The apparatus according to claim 3, characterized in that, The sensor (121) includes a pressure sensor, a concentration sensor, a flow sensor, and / or a temperature sensor.

6. The apparatus according to claim 1, characterized in that, The second control box (20) includes a main body (21) and a display screen (22), the display screen (22) protruding from the main body (21).

7. The apparatus according to claim 6, characterized in that, The second control box (20) also includes an emergency stop button (23), which is located on the main body of the device (21) and on the same side as the display screen (22).

8. The apparatus according to claim 1, characterized in that, The device also includes a second explosion-proof box, which is placed on the outside of the second control box (20).

9. The apparatus according to any one of claims 1-8, characterized in that, The first control box is made of metal or composite material.

10. A recycling system, characterized in that, The system includes an oil and gas recovery device for an oil and gas tank as described in any one of claims 1-9.

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