An oil and gas recovery apparatus

Abstract

The utility model relates to an oil gas recovery device, and the oil gas recovery device is suitable for a main fan lubricating oil tank, the main fan lubricating oil tank has an exhaust port, and the oil gas recovery device comprises a tray and an oil cooling tank. The tray is installed on the exhaust port; the cooling tank is suspended and erected in the tray, the oil cooling tank is a tubular structure along the axial penetration, and a closed annular cavity exists between the inner cylinder wall and the outer cylinder wall of the tubular structure, and the annular cavity is filled with cold oil. By arranging the oil cooling tank, the condensation efficiency of oil gas is effectively enhanced, most of the volatile oil mist is cooled and liquefied in the device, and is smoothly returned to the oil tank, and the volatilization loss of lubricating oil is significantly reduced. By the condensation recovery mode, the accumulation of oil mist at the top of the oil tank, the ground and the like is avoided, the hidden dangers such as slipping and fire are reduced, and the safety of equipment operation is improved.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas recovery equipment, and specifically relates to an oil and gas recovery device. Background Technology

[0002] Conventional lubricating oil tanks are equipped with a breather hole (or breather valve, exhaust port) on the top. Due to the high oil temperature, especially the return oil temperature, a large amount of oil vapor will evaporate and escape through the breather hole. Under conditions of long-term continuous operation of the unit, this leads to continuous leakage of lubricating oil mist, which not only wastes lubricating oil but also pollutes the atmosphere and poses safety hazards. Some of the escaped oil vapor condenses in the air and accumulates in the oil station, on top of the oil tank, and on the nearby ground, making cleaning difficult and further increasing safety risks. Utility Model Content

[0003] The purpose of this invention is to provide an oil and gas recovery device to overcome the above-mentioned technical defects.

[0004] To solve the above-mentioned technical problems, this utility model provides an oil and gas recovery device suitable for the main fan lubricating oil tank. The main fan lubricating oil tank has an exhaust port. The oil and gas recovery device includes: A tray is installed at the exhaust port; The oil cooling box is suspended in the tray. The oil cooling box is a cylindrical structure that runs through the axis. There is a closed annular cavity between the inner and outer walls of the cylindrical structure, and the annular cavity is filled with cold oil.

[0005] According to an oil and gas recovery device, the oil cooling box is suspended in the tray by a support so that the oil cooling box does not contact the tray. The upper surfaces of the plurality of supports are fixed to the bottom surface of the oil cooling box; The lower end faces of the plurality of supports are fixed to the inner wall of the tray.

[0006] According to an oil and gas recovery device, a plurality of the supports are evenly spaced circumferentially between the oil cooling box and the tray; The two adjacent supports are left with a gap to allow the escaped oil and gas to flow back to the main fan lubrication tank.

[0007] According to an oil and gas recovery device, heat dissipation fins are fixedly attached to the outer wall of the oil cooling box. Several heat dissipation fins are evenly spaced along the circumference in the oil cooling box; The longitudinal direction of each of the heat dissipation fins is parallel to the axial centerline of the oil cooler.

[0008] According to an oil and gas recovery device, the outer wall of the oil cooling box is equipped with a cold oil filling port and a cold oil venting port, both of which can be opened or closed. Both the cold oil filling port and the cold oil vent are connected to the annular cavity; The cold oil filling port is located near the top of the oil cooling box; The cold oil vent is located near the bottom of the oil cooler.

[0009] According to an oil and gas recovery device, the tray is funnel-shaped; The funnel's wide opening faces upwards to accommodate the support. The funnel's smaller opening faces downwards and is sealed to the exhaust port.

[0010] According to an oil and gas recovery device, the small-diameter end of the tray is connected to the exhaust port by fasteners.

[0011] According to an oil and gas recovery device, the fastener is a flange or a snap-fit.

[0012] According to an oil and gas recovery device, a dustproof umbrella cap is provided on the top of the oil cooling box; The dustproof umbrella cap is connected to the top of the oil cooler box by a thin metal strip.

[0013] According to an oil and gas recovery device, the height of the dustproof umbrella cap from the top opening of the oil cooling box is H; The maximum diameter of the dustproof umbrella cap is greater than or equal to the inner diameter of the oil cooler box.

[0014] The oil vapor recovery device provided by this utility model is suitable for the exhaust port of the main fan lubricating oil tank. By setting up an oil cooling box with heat dissipation fins, the condensation efficiency of oil vapor is effectively enhanced, allowing most of the volatilized oil mist to be cooled and liquefied inside the device and smoothly flow back to the oil tank, significantly reducing the evaporation loss of lubricating oil. This effectively reduces oil mist escape and lowers VOCs (volatile organic compounds) emissions. Actual measurements show that the VOCs concentration at approximately 1.2 meters from the exhaust port decreases by about 60%, helping to improve the working environment and meeting environmental protection requirements. Through condensation recovery, the accumulation of oil mist on the top of the oil tank, the ground, etc., is avoided, reducing safety hazards such as slipping and fire, and improving the safety of equipment operation.

[0015] To make the above-mentioned contents of this utility model more obvious and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an oil and gas recovery device.

[0017] Figure 2 This is a cross-sectional view of an oil and gas recovery unit.

[0018] Figure 3 This is an application diagram of an oil and gas recovery device.

[0019] Explanation of reference numerals in the attached figures: 10. Main fan lubrication oil tank; 11. Exhaust port; 20. Oil and gas recovery device; 21. Tray; 22. Oil cooling box; 221. Annular cavity; 222. Cold oil; 223. Heat dissipation fins; 224. Cold oil filling port; 225. Cold oil vent; 23. Support; 24. Fastener; 25. Dustproof cap. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] It should be noted that in this utility model, the upper, lower, left, and right in the figure are regarded as the upper, lower, left, and right of the oil and gas recovery device described in this specification.

[0022] Exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the present invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments shown in the drawings is not intended to limit the present invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0023] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0024] This embodiment relates to an oil and gas recovery device, suitable for the main fan lubrication oil tank 10, such as... Figure 3 As shown, the main fan lubricating oil tank 10 has an exhaust port 11, and the oil vapor recovery device 20 is installed at the exhaust port 11. For details, please refer to [link to documentation]. Figure 1 The oil and gas recovery device 20 includes a tray 21 and an oil cooling box 22.

[0025] The tray 21 is installed at the exhaust port 11.

[0026] In some embodiments, the tray 21 is funnel-shaped with the smaller opening facing downwards and is sealed to the vent 11.

[0027] In some embodiments, the smaller diameter end of the tray 21 is connected to the vent 11 by a fastener 24.

[0028] In some embodiments, the fastener 24 is a flange or a snap-fit. That is, the oil vapor recovery device 20 is installed at the exhaust port 11 of the main fan lubricating oil tank 10 via a flange or snap-fit. The tray 21 is fixed to the flange or snap-fit ​​by welding or other means to ensure that the recovered oil flows back to the main fan lubricating oil tank 10. The maximum diameter of the tray 21 is larger than the diameter of the upper oil cooling box 22, and the area of ​​the smaller diameter end is smaller than the top opening area of ​​the main fan lubricating oil tank 10.

[0029] Please see Figure 1 The oil cooling box 22 is suspended inside the tray 21. The oil cooling box 22 is a cylindrical structure that runs through the entire axis. Figure 2 As shown, there is a closed annular cavity 221 between the inner and outer walls of the cylindrical structure, and the annular cavity 221 is filled with cold oil 222.

[0030] The inner cylinder of the oil cooler 22 serves as an oil-gas passage for the exchange of oil and gas with air, allowing the oil and gas to change from a gaseous state to a liquid state and then back into gasoline, achieving the purpose of recycling and reuse. This solves the problem of excessive oil mist escape and lubricating oil waste caused by long-term continuous operation of the unit in the existing technology.

[0031] The annular cavity 221 forms a sealed space surrounding the oil and gas channel (i.e., the inner cylinder of the oil cooling box 22), with its inner cylinder wall becoming a large condensation surface. When high-temperature oil and gas pass through the inner cylinder, they come into contact with the cold inner cylinder wall. As an "annular" cavity, it can surround the oil and gas channel 360 degrees without any blind spots, ensuring that the oil and gas can fully contact the cold surface regardless of which direction it escapes from, thus achieving a uniform and efficient condensation effect, which is much more efficient than single-sided cooling.

[0032] The annular cavity 221 has a closed structure, which allows it to be filled with a liquid medium (in this case, cold oil 222) and continuously remove the heat released during the condensation of oil and gas.

[0033] Cold oil 222 has a much larger heat capacity than air, allowing it to absorb a large amount of heat without its own temperature rising sharply. This ensures that the condensation process can proceed continuously and stably. It carries away or dissipates the absorbed heat through its flow.

[0034] In some embodiments, the inner diameter of the oil cooling box 22 is larger than the diameter of the exhaust port 11.

[0035] Please continue reading. Figure 1 and Figure 2 The oil cooling box 22 is suspended inside the tray 21 by supports 23, so that the oil cooling box 22 does not contact the tray 21. The upper end faces of the multiple supports 23 are fixed to the bottom surface of the oil cooling box 22, and the lower end faces of the multiple supports 23 are fixed to the inner wall of the tray 21.

[0036] In some embodiments, the funnel has its larger opening facing upwards to accommodate the support 23.

[0037] In other embodiments, multiple supports 23 are evenly spaced circumferentially between the oil cooling box 22 and the tray 21, with a gap between adjacent supports 23 to allow the escaped oil and gas to flow back to the main fan lubricating oil tank 10.

[0038] The oil cooling box 22 is filled with low-temperature cold oil 222, while the tray 21 is directly connected to the high-temperature oil tank exhaust port 11, and is itself heated by the high-temperature oil vapor. If the oil cooling box 22 and the tray 21 are in direct contact, the tray 21 will become a "thermal bridge," continuously transferring heat to the oil cooling box 22, causing the cold oil 222 to heat up rapidly and severely reducing condensation efficiency. By using the support 23 to achieve point contact or minimize contact, the heat conduction path is greatly reduced, effectively blocking the conduction of heat from the tray 21 to the oil cooling box 22, ensuring the low-temperature state of the cold oil 222, and thus ensuring the long-lasting and efficient condensation effect.

[0039] In addition, the oil cooling box 22 itself has a certain weight, especially when its annular cavity 221 is filled with cold oil 222, the total weight will increase significantly. Multiple evenly distributed supports 23 can evenly transfer the weight of the oil cooling box 22 to the tray 21, ensuring the stability and structural integrity of the entire device during long-term operation and preventing deformation or damage due to insufficient support.

[0040] In other embodiments, heat dissipation fins 223 are fixed to the outer wall of the oil cooling box 22. A plurality of heat dissipation fins 223 are evenly spaced along the circumference of the oil cooling box 22, and the length direction of each heat dissipation fin 223 is parallel to the axial center line of the oil cooling box 22.

[0041] The cooling oil 222 accelerates heat dissipation through the heat dissipation fins 223.

[0042] Specifically, the cold oil continuously carries away heat through natural convection within the annular cavity 221, and dissipates the heat into the air through the heat dissipation fins 223, maintaining its own low temperature state and thus continuously providing condensation capacity.

[0043] The gaps between adjacent supports 23, combined with the heat dissipation fins 223, ensure that the airflow can fully contact all the heat dissipation fins 223 for secondary heat exchange. If the bottom were closed, the flow of oil and gas would be obstructed, and the condensation effect would be greatly reduced. The gap design between the supports 23 solves the airflow problem.

[0044] The heat dissipation process of the oil and gas recovery unit is as follows: High-temperature oil and gas enter the inner cylinder oil and gas channel of the oil cooling box 22 from the exhaust port 11 of the main fan lubricating oil tank 10. The oil and gas exchange heat with the inner wall of the annular cavity 221 filled with cold oil 222. The oil components in the oil and gas are condensed and reduced to liquid lubricating oil. The condensed droplets flow down the cylinder wall under the action of gravity and finally drip onto the funnel-shaped tray 21 below. The tray 21 guides the recovered lubricating oil back to the main fan lubricating oil tank 10.

[0045] In some embodiments, the outer wall of the oil cooling box 22 is equipped with a cold oil filling port 224 and a cold oil drain port 225, both of which can be opened or closed. Both the cold oil filling port 224 and the cold oil drain port 225 are connected to the annular cavity 221. The cold oil filling port 224 is located near the top of the oil cooling box 22, and the cold oil drain port 225 is located near the bottom of the oil cooling box 22.

[0046] The cold oil filling port 224 and the cold oil venting port 225 together enable the filling, replacement and venting of cold oil 222 in the oil cooling box 22, ensuring the long-lasting and efficient condensation function.

[0047] Specifically, after the initial installation or maintenance of the equipment, cold oil 222 is injected into the annular cavity 221 through the cold oil filling port 224. This is a necessary step for starting up the device. During long-term operation, the cold oil 222 may slowly decrease due to minute leaks or evaporation. The oil level can be checked and replenished periodically through the cold oil filling port 224 to ensure that there is always a sufficient amount of cold oil 222 in the annular cavity 221 to maintain the condensation effect.

[0048] When equipment maintenance, repair, or replacement of the cooling oil 222 is required, the old oil must be completely drained first. The cooling oil drain port 225 is located at the bottom, allowing for complete and thorough drainage by gravity, ensuring no residual oil remains. During long-term circulation for heat absorption and dissipation, the physical properties of the cooling oil 222 (such as viscosity and thermal conductivity) may deteriorate, or contaminants may accumulate. Draining the old oil through the cooling oil drain port 225 and then injecting new oil through the cooling oil filling port 224 can restore the optimal performance of the equipment.

[0049] Please see Figure 1 or Figure 2 A dustproof cap 25 is provided at the top of the oil cooling box 22, and the dustproof cap 25 is connected to the top of the oil cooling box 22 by a thin metal strip. The height of the dustproof cap 25 from the top opening of the oil cooling box 22 is H, and the maximum diameter of the dustproof cap 25 is greater than or equal to the inner diameter of the oil cooling box 22.

[0050] The top of the oil cooler 22 is open, serving as the oil and gas outlet. Without protection, dust, rainwater, or other foreign objects in the air can easily fall directly into the oil and gas passage inside the oil cooler 22. Once foreign objects enter, they may block the oil and gas passage, contaminate the recovered lubricating oil, or even be sucked into the main fan lubricating oil tank 10 by the airflow, seriously affecting the safe operation of the main fan lubrication system. The dust cap 25, like an umbrella, covers the opening, effectively physically isolating these risks.

[0051] The dust cap 25 is suspended by a thin metal strip, with a height H gap between it and the opening. This design ensures that oil and gas can escape smoothly from all sides and below the dust cap 25 without creating back pressure and affecting the normal breathing of the main fan lubricating oil tank 10. The requirement that "the maximum diameter of the dust cap 25 is greater than or equal to the inner diameter of the oil cooler 22" is to ensure that foreign objects falling vertically from directly above are completely blocked, and the protection range completely covers the opening.

[0052] The oil vapor recovery device provided by this utility model is suitable for the exhaust port of the main fan lubricating oil tank. By setting up an oil cooling box with heat dissipation fins, the condensation efficiency of oil vapor is effectively enhanced, allowing most of the volatilized oil mist to be cooled and liquefied inside the device and smoothly flow back to the oil tank, significantly reducing the evaporation loss of lubricating oil. This effectively reduces oil mist escape and lowers VOCs (volatile organic compounds) emissions. Actual measurements show that the VOCs concentration at approximately 1.2 meters from the exhaust port decreases by about 60%, helping to improve the working environment and meeting environmental protection requirements. Through condensation recovery, the accumulation of oil mist on the top of the oil tank, the ground, etc., is avoided, reducing safety hazards such as slipping and fire, and improving the safety of equipment operation.

[0053] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An oil and gas recovery device, suitable for a main fan lubricating oil tank (10), the main fan lubricating oil tank (10) having an exhaust port (11), characterized in that, Oil and gas recovery devices include: The tray (21) is installed at the exhaust port (11); The oil cooling box (22) is suspended in the tray (21). The oil cooling box (22) is a cylindrical structure that runs through the axis. There is a closed annular cavity (221) between the inner and outer walls of the cylindrical structure. The annular cavity (221) is filled with cold oil (222).

2. The oil and gas recovery device according to claim 1, characterized in that, The oil cooling box (22) is suspended in the tray (21) by a support (23) so that the oil cooling box (22) does not contact the tray (21); The upper surfaces of the plurality of supports (23) are fixed to the bottom surface of the oil cooling box (22); The lower end faces of the plurality of supports (23) are fixed to the inner wall of the tray (21).

3. The oil and gas recovery device according to claim 2, characterized in that, Multiple supports (23) are evenly spaced circumferentially between the oil cooling box (22) and the tray (21); The two adjacent supports (23) are left with a gap so that the escaped oil and gas can flow back to the main fan lubricating oil tank (10).

4. The oil and gas recovery device according to claim 1 or 2, characterized in that, Heat dissipation fins (223) are fixed to the outer wall of the oil cooling box (22); Several heat dissipation fins (223) are evenly spaced along the circumference in the oil cooling box (22); The longitudinal direction of each of the heat dissipation fins (223) is parallel to the axial centerline of the oil cooler (22).

5. The oil and gas recovery device according to claim 4, characterized in that, The outer wall of the oil cooling box (22) is equipped with a cold oil filling port (224) and a cold oil drain port (225) that can be opened or closed. The cold oil filling port (224) and the cold oil drain port (225) are both connected to the annular cavity (221). The cold oil filling port (224) is located near the top of the oil cooling box (22); The cold oil vent (225) is located near the bottom of the oil cooler (22).

6. The oil and gas recovery device according to claim 2, characterized in that, The tray (21) is funnel-shaped; The funnel has its large opening facing upwards to accommodate the support (23). The funnel with its small opening facing downwards is sealed to the vent (11).

7. The oil and gas recovery device according to claim 6, characterized in that, The small-diameter end of the tray (21) is connected to the exhaust port (11) by a fastener (24).

8. The oil and gas recovery device according to claim 7, characterized in that, The fastener (24) is a flange or a snap fastener.

9. The oil and gas recovery device according to claim 5, characterized in that, A dustproof umbrella cap (25) is provided on the top of the oil cooling box (22); The dust cap (25) is connected to the top of the oil cooler (22) by a thin metal strip.

10. The oil and gas recovery device according to claim 9, characterized in that, The distance between the dust cap (25) and the top opening of the oil cooler (22) is H; The maximum diameter of the dust cap (25) is greater than or equal to the inner diameter of the oil cooler (22).

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