Double-barrel type oil-gas separation device

Abstract

The utility model belongs to the field of oil-gas separation, and provides a double-barrel type oil-gas separation device which comprises two oppositely-arranged barrel bodies and a separation mechanism arranged in the two barrel bodies, a partition plate is arranged in each barrel body, the interior of each barrel body is divided into a lower cavity and an upper cavity through the corresponding partition plate, and a through hole communicating the upper cavity with the lower cavity is formed in each partition plate; the lower chamber is communicated with an oil return pipe, the top of the upper chamber is provided with an air outlet, the lower chambers of the two barrels are communicated through an oil pressure balance pipe, the upper chambers of the two barrels are communicated through an air pressure balance pipe, and the lower chambers of the two barrels are respectively communicated with an oil inlet pipe; the separation mechanism comprises a guide cylinder, a rotational flow plate and an oil separation core, one end of the guide cylinder is connected with the partition plate, the other end of the guide cylinder extends towards the lower cavity, an inner hole of the guide cylinder is communicated with a through hole of the partition plate, the rotational flow plate spirally extends in the axial direction of the guide cylinder, the oil separation core is arranged in the upper cavity, and an outlet of the oil separation core is communicated with the air outlet. The device can be used by one or two main machines at the same time, and has a good separation effect.

Description

Technical Field

[0001] The utility model relates to the field of oil-gas separation, and particularly relates to a double-barrel oil-gas separation device. Background Art

[0002] An oil-injected screw air compressor is a positive-displacement gas compression machine in which the working volume makes a rotary motion. The compression of the gas is achieved by the change of the volume, and the change of the volume is achieved by means of a pair of rotors of the compressor making a rotary motion in the machine shell. An oil-gas separation device is a device specifically used for separating the oil-gas mixture at the exhaust port of the compressor. Since the volume of the oil-gas separation tank needs to increase with the increase of the volume of the air compressor to meet the demand for separating the large-volume oil-gas mixture, but due to the limitation of the equipment space, the volume of the oil-gas separation tank cannot be increased infinitely, and the manufacturing difficulty and cost of the large-volume oil-gas separation tank are also higher.

[0003] In addition, when the oil-injected screw air compressor is at a low rotational speed, the oil injection speed is low, and due to the low centrifugal speed in the large-volume oil-gas separation tank, a good separation effect cannot be achieved, resulting in a high oil content in the exhaust gas.

[0004] In addition, usually each oil-gas separation device can only be used for one main engine. When multiple oil-injected screw air compressors work simultaneously, oil-gas separation devices need to be equipped separately, resulting in a large floor area for the equipment in the case of multiple devices operating simultaneously.

[0005] The technical problem to be solved by this application is: how to solve the problems that the existing oil-gas separation device has an unsatisfactory oil-gas separation effect at a low rotational speed of the main engine, and a single oil-gas separation device can only be used for one main engine, resulting in a large floor area for the equipment in the case of multiple devices operating simultaneously. Content of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a double-barrel oil-gas separation device, which can be used for one main engine or two main engines simultaneously, and has the characteristics of good oil-gas separation effect.

[0007] The technical solution adopted by the utility model is: a double-barrel oil-gas separation device, including two relatively arranged barrel bodies and a separation mechanism arranged in the two barrel bodies. Each barrel body is internally provided with a partition plate, and the partition plate divides the interior of the barrel body into a lower chamber and an upper chamber. The partition plate is provided with a through hole communicating the upper chamber and the lower chamber. The lower chamber is communicated with an oil return pipe, and an air outlet is arranged at the top of the upper chamber. The lower chambers of the two barrel bodies are communicated through an oil pressure balance pipe, and the upper chambers of the two barrel bodies are communicated through an air pressure balance pipe. The lower chambers of the two barrel bodies are respectively communicated with an oil inlet pipe;

[0008] The separation mechanism includes a guide tube, a swirl plate and an oil separator core. One end of the guide tube is connected to the partition plate, and the other end extends toward the lower chamber. The inner hole of the guide tube is connected to the through hole of the partition plate. The swirl plate is spiral-shaped and is built into the lower chamber. The swirl plate, the partition plate, the guide tube and the inner wall of the lower chamber constitute a winding downward swirl channel connected to the oil inlet pipe. The oil separator core is built into the upper chamber, and the outlet of the oil separator core is connected to the air outlet.

[0009] The double-barrel oil-gas separation device of the present application, by setting two barrels connected in parallel, can meet the oil-gas mixture separation requirements of a large-volume compressor by using two barrels of smaller size, and can be arranged in a limited space with a good oil-gas separation device, and the production difficulty and production cost of the two small-sized barrels are reduced compared with a single large-sized barrel, and the double-barrel oil-gas separation device of the present application is smaller in diameter than a large-sized separation barrel, resulting in a higher number and speed of rotation of the oil-gas mixture, thereby improving the separation effect, and can supply one host or one main engine according to demand. The invention provides two main machines for simultaneous use. When a single main machine is at a low speed, the oil-gas mixture can be simultaneously introduced into two barrels and separated into two barrels for separation. Since the barrel diameter of the barrel of the present application is smaller than that of a single large-sized barrel, the speed of the oil-gas mixture in the barrel is increased, thereby improving the effect of centrifugal separation. When two main machines are used, the two main machines can be connected to the two barrels for separation respectively, thus reducing the area occupied by multiple devices running at the same time and making the volume of multiple devices running more compact. The double-barrel oil-gas separation device of the present application enables a single main machine or two main machines to run at the same time to achieve the best separation effect.

[0010] By setting up an oil pressure balance pipe, the lubricating oil deposited in the two barrels can be at the same level, so that the amount of oil returned to the main engine from the two barrels is kept consistent as much as possible. The air pressure balance pipe can keep the air pressure in the two barrels consistent.

[0011] In addition, by arranging a spirally extending swirl plate between the guide tube and the inner wall of the barrel body, the oil-gas mixture can be guided to form a high-speed swirl when it is sprayed into the lower chamber, thereby improving the efficiency of oil-gas separation. The large-volume oil droplets in the oil-gas mixture are retained in the lower chamber by centrifugal force through high-speed rotation, completing the first separation. Then the airflow mixed with small-volume oil droplets enters the upper chamber through the inner hole of the guide tube. Under the action of the oil separation core, the small-volume oil droplets are intercepted, and the separated air is discharged from the barrel body through the air outlet.

[0012] In some embodiments, the edge of the swirl plate abuts against the outer surface of the guide tube and / or the inner wall of the lower chamber.

[0013] By adopting the above technical solution, the strength of the swirl plate can be enhanced, preventing the swirl plate from deforming or vibrating under the impact of the oil-gas mixture, which may affect the formation of a high-speed swirl of the oil-gas mixture.

[0014] In some embodiments, the separation mechanism further includes an oil droplet rising prevention plate, which is disposed inside the lower chamber, and the oil droplet rising prevention plate is located between the bottom of the guide cylinder and the oil pressure balance pipe. One end of the oil droplet rising prevention plate is connected to the inner wall of the lower chamber, and the other end extends towards the axis of the lower chamber. The inner diameter of the oil droplet rising prevention plate is larger than the inner hole diameter of the guide cylinder.

[0015] By adopting the above technical solution, the oil droplet rising prevention plate can intercept some of the oil droplets rising with the air flow, and can also prevent the spiral air flow from stirring up the lubricating oil accumulated at the bottom of the lower chamber, minimizing the possibility of oil droplets entering the upper chamber as much as possible.

[0016] In some embodiments, one end of the oil droplet rising prevention plate is connected to the inner wall of the lower chamber, and the other end extends towards the bottom of the lower chamber.

[0017] By adopting the above technical solution, the oil droplet rising prevention plate is inclined downward, which can guide the oil droplets to converge at the bottom of the lower chamber.

[0018] In some embodiments, the number of the oil droplet rising prevention plates is several, and the oil droplet rising prevention plates are arranged at intervals along the circumferential direction of the lower chamber.

[0019] By adopting the above technical solution, there is a gap between two adjacent oil droplet rising prevention plates, which can avoid interfering with the swirl of the oil-gas mixture by the oil droplet rising prevention plates, and at the same time, the gap can also facilitate the oil droplets hanging on the inner wall of the lower chamber to converge at the bottom.

[0020] In some embodiments, the return oil pipes of the two barrels are connected through a tee.

[0021] By adopting the above technical solution, when used for one main engine, connecting the return oil pipes of the two barrels through the tee can facilitate the return of the lubricating oil to the main engine.

[0022] In some embodiments, an oil filling port and an oil sight hole are further provided on the barrel. The oil filling port is arranged at one end of the lower chamber close to the partition plate, and the oil sight hole is arranged at the middle position of the lower chamber.

[0023] By adopting the above technical solution, the oil filling port is used to fill the lubricating oil into the lower chamber, and the oil sight hole is used to observe the oil quantity inside the lower chamber.

[0024] In some embodiments, a drain pipe is arranged at the bottom of the lower chamber, and the return oil pipe is arranged between the drain pipe and the oil pressure balance pipe.

[0025] By adopting the above technical solution, when the drain pipe is used to replace the lubricating oil or for maintenance, it discharges the lubricating oil in the lower chamber. The return pipe is arranged between the drain pipe and the oil pressure balance pipe, which can prevent the impurities deposited at the bottom of the lower chamber from flowing back into the main engine again.

[0026] In some embodiments, the barrel body is further provided with a pressure gauge mounting port and a pressure discharge port, both of which are communicated with the upper chamber.

[0027] By adopting the above technical solution, the pressure gauge mounting port is used to install a pressure gauge to facilitate visually knowing the pressure inside the barrel body. The pressure discharge port is used to install a pressure relief valve. When the pressure inside the barrel body exceeds the preset pressure value, the pressure relief valve automatically opens to relieve the pressure, so as to ensure the safety of the oil-gas separation device.

[0028] In some embodiments, an end cover is further arranged at the top of the barrel body. The oil separation core is connected to the end cover, and the air outlet is arranged on the end cover.

[0029] By adopting the above technical solution, by arranging the end cover, it is convenient to replace the oil separation core. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of a double-barrel oil-gas separation device according to a preferred embodiment of the present invention;

[0031] Figure 2 is Figure 1 the sectional view of the double-barrel oil-gas separation device shown along line A-A;

[0032] Figure 3 is Figure 1 the partial sectional structural schematic diagram of the double-barrel oil-gas separation device shown;

[0033] In the figure: 100, double-barrel oil-gas separation device; 10, barrel body; 101, lower chamber; 102, upper chamber; 103, fuel filling port; 104, oil viewing hole; 105, pressure gauge mounting port; 106, pressure discharge port; 11, partition plate; 12, inlet pipe; 13, return pipe; 14, oil pressure balance pipe; 15, air pressure balance pipe; 16, drain pipe; 17, end cover; 20, separation mechanism; 21, guide cylinder; 22, swirl plate; 23, oil separation core; 24, oil droplet stop plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. When the number of an element is referred to as having "a plurality", it can be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] Please refer to Figures 1 to 3 , a double-barrel oil-gas separation device 100 according to a preferred embodiment of the present utility model, includes two relatively arranged barrels 10 and a separation mechanism 20 arranged in the two barrels 10. Each barrel 10 is internally provided with a partition plate 11. The partition plate 11 divides the interior of the barrel 10 into a lower chamber 101 and an upper chamber 102. The partition plate 11 is provided with a through hole communicating the upper chamber 102 and the lower chamber 101. The lower chamber 101 is communicated with an oil return pipe 13. An air outlet is provided at the top of the upper chamber 102. The lower chambers 101 of the two barrels 10 are communicated through an oil pressure balance pipe 14. The upper chambers 102 of the two barrels 10 are communicated through an air pressure balance pipe 15. The lower chambers 101 of the two barrels 10 are respectively communicated with an oil inlet pipe 12; by providing the oil pressure balance pipe 14, the deposited lubricating oil in the two barrels 10 can be at the same horizontal plane, so that the amount of oil returned to the main engine by the two barrels 10 is kept as consistent as possible, and the air pressure balance pipe 15 can make the air pressure in the two barrels 10 consistent.

[0038] As Figure 2As shown, the separation mechanism 20 includes a guide tube 21, a swirl plate 22 and an oil separator core 23. One end of the guide tube 21 is connected to the partition plate 11, and the other end extends toward the lower chamber 101. The inner hole of the guide tube 21 is connected to the through hole of the partition plate 11. The swirl plate 22 is spiral-shaped. The swirl plate 22 is built into the lower chamber 101. The swirl plate 22, the partition plate 11, the guide tube 21 and the inner wall of the lower chamber 101 constitute a winding downward swirl channel connected to the oil inlet pipe 12. The oil separator core 23 is built into the upper chamber 102, and the outlet of the oil separator core 23 is connected to the air outlet. By arranging a spirally extending swirl plate 22 between the guide tube 21 and the inner wall of the barrel body 10, the oil-gas mixture can be guided to form a high-speed swirl when it is sprayed into the lower chamber 101, thereby improving the efficiency of oil-gas separation. The large-volume oil droplets in the oil-gas mixture are retained in the lower chamber 101 by centrifugal force through high-speed rotation, completing the first separation, and then the air flow mixed with small-volume oil droplets enters the upper chamber 102 through the inner hole of the guide tube 21. Under the action of the oil separation core 23, the small-volume oil droplets are intercepted, and the separated air is discharged from the barrel body 10 through the air outlet.

[0039] Optionally, the edge of the swirl plate 22 abuts against the outer surface of the guide tube 21 and / or the inner wall of the lower chamber 101. This arrangement can enhance the strength of the swirl plate 22 and prevent the swirl plate 22 from deforming or vibrating under the impact of the oil-gas mixture, thereby affecting the high-speed swirl of the oil-gas mixture.

[0040] Preferably, the partition plate 11 , the guide tube 21 and the lower chamber 101 are coaxially arranged.

[0041] In this embodiment, the swirl plate 22 is disposed on the outer wall of the guide tube 21 and extends toward the bottom of the lower chamber 101 along the axial spiral of the guide tube 21 , which can reduce the difficulty of installing the swirl plate 22 .

[0042] Preferably, the distance between two adjacent layers of the swirl plates 22 is greater than or equal to the inner diameter of the oil inlet pipe 12 , so as to avoid the swirl plates 22 blocking the oil inlet pipe 12 when the oil is flowing into the oil inlet pipe 12 .

[0043] Preferably, in order to facilitate the formation of a swirl when the oil-gas mixture is sprayed into the lower chamber 101 , the entry direction of the oil inlet pipe 12 should be arranged along the tangential direction of the guide tube 21 .

[0044] Please also read Figure 2 and Figure 3, the separation mechanism 20 further includes an oil droplet rising prevention plate 24. The oil droplet rising prevention plate 24 is disposed inside the lower chamber 101, and is located between the bottom of the flow guide cylinder 21 and the oil pressure balance pipe 14. One end of the oil droplet rising prevention plate 24 is connected to the inner wall of the lower chamber 101, and the other end extends towards the axis of the lower chamber 101. The inner diameter of the oil droplet rising prevention plate 24 is larger than the inner hole diameter of the flow guide cylinder 21. The oil droplet rising prevention plate 24 can intercept some of the oil droplets rising with the airflow, and can also prevent the spiral airflow from agitating the lubricating oil accumulated at the bottom of the lower chamber 101, minimizing the possibility of oil droplets entering the upper chamber 102 as much as possible. Setting the inner diameter of the oil droplet rising prevention plate 24 to be smaller than the inner diameter of the flow guide cylinder 21 can increase the difficulty for the oil droplets hanging on the oil droplet rising prevention plate 24 to enter the upper chamber 102 through the inner hole of the flow guide cylinder 21.

[0045] Further, one end of the oil droplet rising prevention plate 24 is connected to the inner wall of the lower chamber 101, and the other end extends towards the bottom of the lower chamber 101. The oil droplet rising prevention plate 24 is disposed obliquely downward, which can guide the oil droplets to converge to the bottom of the lower chamber 101.

[0046] Furthermore, the number of the oil droplet rising prevention plates 24 is several, and the oil droplet rising prevention plates 24 are arranged at intervals along the circumferential direction of the lower chamber 101. There is a gap between two adjacent oil droplet rising prevention plates 24, which can avoid interfering with the swirling flow of the oil-gas mixture by the oil droplet rising prevention plates 24, and at the same time the gap can also facilitate the oil droplets hanging on the inner wall of the lower chamber 101 to converge to the bottom. It should be noted that the number of the oil droplet rising prevention plates 24 can be increased or decreased according to actual needs, and the gap between two adjacent oil droplet rising prevention plates 24 can also be adjusted according to actual needs. In addition, two adjacent oil droplet rising prevention plates 24 can be on the same horizontal plane or different horizontal planes.

[0047] Optionally, the return oil pipes 13 of the two barrels 10 are connected through a tee. When used for one main engine, connecting the return oil pipes 13 of the two barrels 10 through the tee can facilitate the return of the lubricating oil to the main engine. When used for two main engines simultaneously, the return oil pipes 13 of the two barrels 10 can also be not connected.

[0048] As Figure 1 shown, in this embodiment, the barrel 10 is further provided with a fuel filling port 103 and an oil viewing hole 104. The fuel filling port 103 is arranged at one end of the lower chamber 101 close to the partition plate 11, and the oil viewing hole 104 is arranged at the middle position of the lower chamber 101. The fuel filling port 103 is used for filling lubricating oil into the lower chamber 101, and the oil viewing hole 104 is used for observing the oil quantity inside the lower chamber 101.

[0049] Preferably, an oil drain pipe 16 is provided at the bottom of the lower chamber 101, and the oil return pipe 13 is arranged between the oil drain pipe 16 and the oil pressure balance pipe 14. The oil drain pipe 16 is used to drain the lubricating oil in the lower chamber 101 during the replacement of the lubricating oil or maintenance. Arranging the oil return pipe 13 between the oil drain pipe 16 and the oil pressure balance pipe 14 can prevent the impurities deposited at the bottom of the lower chamber 101 from flowing back into the main engine again.

[0050] In this embodiment, the barrel 10 is further provided with a pressure gauge mounting port 105 and a pressure discharge port 106, and both the pressure gauge mounting port 105 and the pressure discharge port 106 communicate with the upper chamber 102. The pressure gauge mounting port 105 is used to mount a pressure gauge so as to intuitively know the pressure inside the barrel 10, and the pressure discharge port 106 is used to mount a pressure relief valve. When the pressure inside the barrel 10 exceeds the preset pressure value, the pressure relief valve automatically opens to relieve the pressure to ensure the safety of the oil-gas separation device.

[0051] Preferably, an end cover 17 is further provided at the top of the barrel 10. The oil separation core 23 is connected to the end cover 17, and the air outlet is arranged on the end cover 17. By providing the end cover 17, it is convenient to replace the oil separation core 23. Optionally, the end cover 17 and the barrel 10 are fixedly connected by bolts.

[0052] For the double-barrel oil-gas separation device 100 of the present utility model, by providing two juxtaposed and connected barrels 10, the requirement for separating the oil-gas mixture of a large-volume compressor can be met by using two barrels 10 with smaller sizes. An oil-gas separation device with a good separation effect can be arranged in a limited space. Moreover, compared with a single large-sized barrel 10, the production difficulty and production cost of the two small-sized barrels 10 are reduced. And for the double-barrel oil-gas separation device of the present application, compared with a large-sized separation barrel, the diameter becomes smaller, resulting in a higher number and speed of rotations of the oil-gas mixture, thereby improving the separation effect. And it can be used for one main engine or two main engines simultaneously according to requirements. When a single main engine is running at a low speed, the oil-gas mixture can be simultaneously introduced into the two barrels 10 for separation in the two barrels 10. Since the diameter of the barrel 10 is smaller, the rotation speed of the oil-gas mixture in the barrel 10 is increased, improving the centrifugal separation effect. When two main engines are used, the two main engines can be respectively connected to the two barrels 10 for separation, which can reduce the area occupied by the simultaneous operation of multiple devices and make the volume of the operation of multiple devices more compact. The double-barrel oil-gas separation device 100 of the present application can achieve the best separation effect whether a single main engine or two main engines are running simultaneously.

[0053] Finally, it should be noted that the above are only preferred examples of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A double barrel type oil-gas separation device (100), comprising two barrel bodies (10) arranged opposite to each other and a separation mechanism (20) arranged in the two barrel bodies (10), characterized in that: Each barrel (10) is internally provided with a partition plate (11), the partition plate (11) partitioning the interior of the barrel (10) into a lower chamber (101) and an upper chamber (102), the partition plate (11) being provided with a through hole connecting the upper chamber (102) and the lower chamber (101), the lower chamber (101) being connected with an oil return pipe (13), the top of the upper chamber (102) being provided with an air outlet, the lower chambers (101) of the two barrels (10) being connected with each other via an oil pressure balance pipe (14), the upper chambers (102) of the two barrels (10) being connected with each other via an air pressure balance pipe (15), and the lower chambers (101) of the two barrels (10) being respectively connected with oil inlet pipes (12); The separation mechanism (20) comprises a guide tube (21), a swirl plate (22) and an oil separation core (23); one end of the guide tube (21) is connected to the partition plate (11), and the other end extends toward the lower chamber (101); the inner hole of the guide tube (21) is connected to the through hole of the partition plate (11); the swirl plate (22) is spiral-shaped; the swirl plate (22) is built into the lower chamber (101); the swirl plate (22), the partition plate (11), the guide tube (21) and the inner wall of the lower chamber (101) form a swirl channel that meanders downward and is connected to the oil inlet pipe (12); the oil separation core (23) is built into the upper chamber (102); and the outlet of the oil separation core (23) is connected to the air outlet.

2. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: The edge of the swirl plate (22) abuts against the outer surface of the guide cylinder (21) and / or the inner wall of the lower chamber (101).

3. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: The separation mechanism (20) further comprises an oil drop anti-lift plate (24), the oil drop anti-lift plate (24) being built into the lower chamber (101), and the oil drop anti-lift plate (24) being located between the bottom of the guide tube (21) and the oil pressure balance tube (14), one end of the oil drop anti-lift plate (24) being connected to the inner wall of the lower chamber (101), and the other end extending toward the axis of the lower chamber (101), and the inner diameter of the oil drop anti-lift plate (24) being larger than the inner hole diameter of the guide tube (21).

4. The double-barrel oil-gas separation device (100) according to claim 3 is characterized in that: One end of the oil drop lift plate (24) is connected to the inner wall of the lower chamber (101), and the other end extends toward the bottom of the lower chamber (101).

5. The double-barrel oil-gas separation device (100) according to claim 3, characterized in that: There are a plurality of oil droplet anti-lift plates (24), and each of the oil droplet anti-lift plates (24) is arranged at intervals along the circumference of the lower chamber (101).

6. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: The oil return pipes (13) of the two barrel bodies (10) are connected via a tee.

7. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: The barrel body (10) is also provided with a refueling port (103) and an oil sight hole (104); the refueling port (103) is arranged at one end of the lower chamber (101) close to the partition plate (11), and the oil sight hole (104) is arranged in the middle of the lower chamber (101).

8. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: An oil drain pipe (16) is provided at the bottom of the lower chamber (101), and the oil return pipe (13) is provided between the oil drain pipe (16) and the oil pressure balance pipe (14).

9. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: The barrel body (10) is also provided with a pressure gauge installation port (105) and a pressure discharge port (106), and the pressure gauge installation port (105) and the pressure discharge port (106) are both in communication with the upper chamber (102).

10. The double-barrel oil-gas separation device (100) according to claim 1, characterized in that: An end cover (17) is also provided on the top of the barrel body (10), the oil separation core (23) is connected to the end cover (17), and the air outlet is provided on the end cover (17).

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