Oil-gas separation device

Abstract

The invention provides an oil-gas separation device which comprises an oil-gas barrel, a gas inlet pipe and an oil-gas separation core, the inner end of the gas inlet pipe extends into the oil-gas barrel, and the oil-gas separation core is located in the oil-gas barrel and communicated with the inner end of the gas inlet pipe. An oil-gas mixture entering the oil-gas separation core from the inner end of the gas inlet pipe can enter the oil-gas barrel only after being subjected to oil-gas separation through the oil-gas separation core. The oil-gas mixture of the gas inlet pipe directly and completely enters the oil-gas separation core and is subjected to oil drop separation from the inner side to the outer side of the oil-gas separation core, so that the separated oil drops directly drop to the bottom of the oil-gas barrel, and the separated clean air can be directly collected and discharged. Clean air can be collected only through one-time oil-gas separation, so that the cost can be greatly reduced and the structure can be greatly simplified without arranging an oil return mechanism or a collision mechanism.

Description

Technical Field

[0001] The present application relates to an oil-gas separation device, and in particular to an oil-gas separation device built into a compressor. Background Art

[0002] The structure of the existing oil and gas separation equipment 90 is referenced Figure 7 As shown, the oil-gas separation equipment 90 has an oil-gas barrel 91, which is connected to an air inlet pipe 92. The oil-gas mixture enters the interior of the oil-gas barrel 91 through the air inlet pipe 92, and a primary separation device such as a cyclone separation structure or an impact separation structure is provided in the oil-gas barrel 91 (not shown in the figure). Therefore, after the oil-gas mixture undergoes a separation process through rotational separation, turning, collision, etc., most of the oil droplets are separated to achieve the first separation.

[0003] Inside the oil-gas barrel 91, an oil-gas separation core 93 is installed. After the initial separation, the oil-gas mixture enters the oil-gas separation core 93 for a second separation. As the oil-gas mixture passes through the oil-gas separation core 93, oil droplets are separated and, due to gravity, fall to the bottom surface of the oil-gas separation core 93. The oil droplets at the bottom of the oil-gas separation core 93 are drawn out by an oil return pipe 94 extending downward into the oil-gas separation core 93. The gaseous portion of the oil-gas mixture flows along the oil-gas separation core 93 to an outlet valve 95 connected thereto, leaving the oil-gas barrel 91 to yield clean air. A cooler 951 and a water separator 952 can be connected to the pipeline behind the outlet valve 95. The oil droplets separated by the oil-gas separation core 93 flow through the oil return pipe 94, through the oil return check valve 96, and into the low-pressure section 97 of the main engine. The oil at the bottom of the oil-gas barrel 91 can be discharged to the outside via an oil extraction pipe 98.

[0004] The secondary separation of the above-mentioned existing oil-gas separation equipment 90 has the following disadvantages:

[0005] First, the installation of a primary separation device in the oil-gas separation device 90 adds primary separation-related structures to the oil-gas separation device. This not only increases the overall volume of the oil-gas separation device 90, but also increases the complexity of the internal structure of the oil-gas separation device and increases the cost of oil-gas separation.

[0006] Second, during the first separation, the oil-gas mixture is mainly separated by most of the oil droplets through the processes of rotation separation, turning, collision, etc. in the oil-gas barrel 91. Therefore, how the oil-gas mixture enters the oil-gas barrel 91 and cooperates with the primary separation is quite critical. The position and angle of the air intake pipe 92 and the oil-gas barrel 91 will affect the efficiency of the primary separation. Therefore, the existing oil-gas separation equipment 90 is often prone to greatly reduce the efficiency of oil-gas separation due to the defective rate of the air intake position or air intake angle of the air intake pipe 92.

[0007] Third, during the second oil filtration and return, the existing oil-gas separation device 90 allows the oil-gas mixture to flow from the outside of the oil-gas separation core 93 into the inside. Consequently, the filtered oil accumulates within the oil-gas separation core 93. To prevent the accumulated oil from being drawn upward along with the air, an oil return pipe 94 is required to draw the oil from the bottom of the oil-gas separation core 93. However, the depth of the oil return pipe 94 must be precisely set. A bottom end that is too low or too high will affect the effectiveness of the return pipe in removing oil droplets. If the distance between the bottom end of the oil return pipe 94 and the bottom of the oil-gas separation core 93 is too large, the return pipe 94 will not absorb all the oil, causing residual oil to flow out of the air compressor along with the separated gas. Furthermore, if the bottom end of the oil return pipe 94 directly abuts the bottom of the oil-gas separation core 93, the cross-sectional area of ​​the oil return will be reduced, thereby reducing the amount of oil drawn back.

[0008] Fourth, since the depth of the oil return pipe 94 must be set very accurately, the oil return pipe 94 needs to be disassembled and assembled every time the oil-gas separation core 93 is regularly maintained. In addition, in order to avoid the bottom end of the oil return pipe 94 directly hitting the bottom of the oil-gas separation core 93, or to adjust the bottom end of the oil return pipe 94 so that it is not too high and the bottom end of the oil return pipe 94 cannot effectively contact the liquid surface, the maintenance time of the oil-gas separation core 93 will be increased. However, in fact, it is adjusting the relative position of the bottom end of the oil return pipe 94, which consumes too much work time.

[0009] Fifth, the oil return check valve 96 in the existing oil-gas separation device 90 is easily damaged. If it changes from a one-way connection to a two-way connection, the oil inside the oil-gas separation core 93 cannot be sucked back in time during the next operation. In this way, part of the oil will flow to the outside of the air compressor along with the separated gas.

[0010] Sixth, when the existing oil-gas separation equipment 90, such as the return oil pipe 94 or the return oil check valve 96 thereon, or the return oil filter (not shown in the figure), is blocked by foreign matter (usually solid impurities dropped during installation), the oil condensed at the bottom of the oil-gas separation core 93 after oil-gas separation cannot be sucked back into the air compressor head, causing the condensed oil to be blown up again and carried away along with the separated gas.

[0011] In summary, the secondary oil and gas separation and the setting of the oil return pipe of the oil and gas separation equipment in the prior art have caused a lot of shortcomings, and thus need to be improved. Summary of the Invention

[0012] In view of the shortcomings or deficiencies in the aforementioned prior art, the present application provides an oil-gas separation device, which can collect clean air through only one oil-gas separation and can solve the shortcomings of the prior art without setting up an oil return pipe.

[0013] In order to achieve the above-mentioned purpose of the invention, the technical means adopted in this application is to provide an oil-gas separation device, which includes: an oil-gas barrel, which has a accommodating space and a gas outlet; an air inlet pipe, which is connected to the oil-gas barrel, and the inner end of the air inlet pipe extends into the accommodating space; and an oil-gas separation core, which is located in the oil-gas barrel and is connected to the inner end of the air inlet pipe, so that the oil-gas mixture entering the oil-gas separation core from the inner end of the air inlet pipe must pass through the oil-gas separation core for oil and gas separation before entering the accommodating space.

[0014] In the oil-gas separation device of the present application, the oil-gas separation core includes an oil-gas space and at least one filter element. The oil-gas space is connected to the inner end of the intake pipe. The at least one filter element is annular and surrounds the oil-gas space.

[0015] In the oil-gas separation device of the present application, the oil-gas separation core further comprises an upper cover and a lower cover, and the upper cover and the lower cover are respectively arranged to cover the top end and the bottom end of the at least one filter element.

[0016] In the oil-gas separation device of the present application, the oil-gas separation core further comprises at least one mesh tube, the at least one mesh tube being connected to the upper cover and the lower cover. The at least one mesh tube comprises an outer mesh tube, the at least one filter element comprises an inner filter element, the outer mesh tube surrounds and abuts against the outer circumference of the inner filter element. The at least one mesh tube further comprises an inner mesh tube, the inner filter element surrounds and abuts against the outer circumference of the inner mesh tube. The at least one filter element further comprises an outer filter element, the outer filter element surrounds and abuts against the outer circumference of the outer mesh tube.

[0017] In the oil-gas separation device of the present application, the oil-gas separation core is spirally connected to the intake pipe.

[0018] In the oil-gas separation device of the present application, at least one sealing member is provided between the oil-gas separation core and the intake pipe.

[0019] In the oil-gas separation device of the present application, the inner end of the intake pipe extends upward so that the oil-gas separation core is located above the inner end of the intake pipe.

[0020] The advantage of the present application is that the oil-gas separation core of the oil-gas separation device is directly arranged on the intake pipe and connected to the intake pipe, so that the oil-gas mixture flowing into the oil-gas barrel through the intake pipe will directly and completely enter the interior of the oil-gas separation core, and oil droplets will be separated in the process of circulating in the oil-gas separation core. The oil droplets separated from the oil-gas separation core will directly drop to the bottom of the oil-gas barrel, and the clean air separated from the oil-gas separation core can be directly collected and discharged. Moreover, the clean air can be collected after only one oil-gas separation through the oil-gas separation core arranged on the intake pipe. Therefore, there is no need to set up an oil return mechanism or a collision mechanism, which can greatly reduce costs and simplify the structure.

[0021] Compared with the prior art in which the oil-gas mixture is filtered from the outside to the inside of the oil-gas separation core, which causes the separated oil droplets to accumulate in the oil-gas separation core and requires an oil return pipe to be set up, the oil-gas mixture of the present application moves from the inside to the outside of the oil-gas separation core for filtration, so the oil droplets will fall directly to the bottom of the oil-gas barrel and will not accumulate in the oil-gas separation core. In addition, there is no need to set up an oil return pipe to absorb the oil droplets. This not only reduces costs, but also avoids pipeline loss due to secondary reflux, and there is no need to consider disassembling the oil return pipe and adjusting the height of the bottom end when repairing the oil-gas separation core. It is more time-saving and reliable in installation and maintenance.

[0022] Furthermore, the present invention allows the oil-gas mixture to enter the oil-gas separation core directly for oil-gas separation, eliminating the need for rotational separation, turning, collision, and other processes within the oil-gas barrel as in the prior art. This eliminates the need for a primary separation device, effectively reducing costs while significantly simplifying the complexity of the oil-gas barrel's internal structure and reducing its volume. Furthermore, there's no need to specify the position and angle of the intake pipe to enhance the collision separation effect; instead, the position and angle of the intake pipe can be freely adjusted to suit the specific situation, further reducing the overall volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an external stereoscopic schematic diagram of the oil-gas separation device of the present application.

[0024] Figure 2 It is an internal three-dimensional cross-sectional view of the oil-gas separation device of the present application.

[0025] Figure 3 It is a schematic diagram of the pipelines of the oil-gas separation device of the present application.

[0026] Figure 4 It is an external stereoscopic schematic diagram of the oil-gas separation core and the air intake pipe of the oil-gas separation device of the present application.

[0027] Figure 5 It is a schematic diagram of the exploded components of the oil-gas separation core of the oil-gas separation device of the present application.

[0028] Figure 6 This is a schematic diagram of the operation of the oil-gas separation device of the present application when in use.

[0029] Figure 7 This is a working schematic diagram of the oil and gas separation equipment in the prior art when in use. DETAILED DESCRIPTION

[0030] The following, in conjunction with the accompanying drawings and the preferred embodiments of the present application, further illustrates the technical solutions adopted by the present application to achieve the predetermined invention objectives.

[0031] refer to Figures 1 to 5 As shown, the oil-gas separation device of the present application includes an oil-gas barrel 10, an air intake pipe 20 and an oil-gas separation core 30. In addition, in this embodiment, the oil-gas separation device of the present application further includes an oil extraction pipe 40, a safety valve pipe 50, an oil replenishing pipe 60 and an oil changing pipe 70.

[0032] The aforementioned oil and gas barrel 10 has a accommodating space 11 and a gas outlet 12. The aforementioned air intake pipe 20 is connected to the oil and gas barrel 10, and the inner end of the air intake pipe 20 extends into the accommodating space 11. The aforementioned oil and gas separation core 30 is connected to the inner end of the air intake pipe 20, so that the oil and gas mixture entering the oil and gas separation core 30 from the inner end of the air intake pipe 20 must pass through the oil and gas separation core 30 for oil and gas separation before entering the accommodating space 11, and cannot enter the accommodating space 11 without oil and gas separation through the oil and gas separation core 30.

[0033] The aforementioned intake pipe 20 is preferably a bent tube, and the inner end of the intake pipe 20 extends upward, that is, extends toward the gas outlet 12, so that the oil-gas separation core 30 is relatively located above the inner end of the intake pipe 20, but is not limited to this. The intake pipe 20 can also be a straight tube and simply inserted into the oil and gas barrel 10.

[0034] Preferably, the oil-gas mixture entering the oil-gas separation core 30 through the inner end of the intake pipe 20 is filtered in a direction perpendicular to or parallel to the intake direction, and in this embodiment, the oil-gas mixture is discharged from the oil-gas separation core 30 only after being filtered perpendicular to the intake direction, but this is not limited to this.

[0035] In this embodiment, the oil-gas separator core 30 includes an oil-gas space and at least one filter element. The oil-gas space is connected to the inner end of the intake pipe 20, and the at least one filter element is annular and surrounds the oil-gas space. As a result, the filtered clean air and oil droplets are radially dispersed from the annular filter element, thereby increasing the area (i.e., the entire outer annular surface) that exits the oil-gas separator core 30 and facilitating the oil droplets to fall from all angles. However, this is not limiting. The oil-gas separator core 30 may also allow the filtered clean air and oil droplets to exit in a single direction. For example, the oil-gas separator core 30 may be positioned at the inner end of the transversely extending intake pipe 20, allowing the filtered clean air and oil droplets to exit laterally from the oil-gas separator core 30. Alternatively, the filter element may be positioned downward, allowing the filtered oil droplets to exit the oil-gas separator core 30 downward and drip directly downward, and so on.

[0036] In this embodiment, the oil-gas separation core 30 also includes an upper cover 32 and a lower cover 33. The upper cover 32 and the lower cover 33 are respectively configured to cover the top and bottom ends of the filter element, clamping and fixing the filter element between the upper cover 32 and the lower cover 33, and sealing the top surface of the filter element with the upper cover 32 to prevent the oil-gas mixture entering the oil-gas space from the inner end of the intake pipe 20 from flowing out directly from the top surface of the filter element without oil-gas separation.

[0037] The oil-gas separation core 30 may preferably be provided with at least one mesh tube to connect the upper cover 32 and the lower cover 33 to serve as a support structure, but is not limited thereto. The upper cover 32 and the lower cover 33 may be simply provided at both ends of the filter element without the mesh tube. In this embodiment, there are two mesh tubes, one inner mesh tube 34 and one outer mesh tube 35, and two filter elements, one inner filter element 31 and one outer filter element 37. The inner filter element 31 surrounds the outer periphery of the inner mesh tube 34. The mesh openings of the inner mesh tube 34 allow the oil-gas mixture in the oil-gas space to pass through and flow into the inner filter element 31 for oil-gas separation. The outer mesh tube 35 surrounds and abuts the outer periphery of the inner filter element 31. The mesh openings of the outer mesh tube 35 allow the oil and air separated from the inner filter element 31 to pass through the outer mesh tube 35. The outer mesh tube 35 also abuts the inner filter element 31 in the direction of airflow. The oil-gas mixture in the oil-gas space passes through and flows into the inner filter element 31 for oil-gas separation. The outer filter element 37 surrounds the outer periphery of the outer mesh tube 35, thereby further separating the oil and gas, thereby improving the efficiency of oil-gas separation. The number of mesh tubes and filter elements is not limited to the above, and each can be only one.

[0038] In addition, depending on the requirements of the oil-gas separation device, the inner filter element 31 and the outer filter element 37 can both adopt a single-layer or multi-layer planar structure.

[0039] In this embodiment, the inner end of the intake pipe 20 is screwed to the oil-gas separator core 30, preferably via an intake connector 36 with threads at both ends. The threads at both ends of the intake connector 36 connect between the oil-gas separator core 30 and the inner end of the intake pipe 20. This threaded connection not only facilitates installation but also provides a certain sealing effect, but is not limited to this connection method. Furthermore, preferably, at least one seal is provided between the oil-gas separator core 30 and the inner end of the intake pipe 20. This seal can be located on the intake connector 36 or elsewhere to prevent the direct escape of unfiltered oil-gas mixture. The seal is preferably a sealing ring (O-ring), but is not limited to this. Alternatively, a flange, gasket, etc. may be used.

[0040] Since the oil-gas separation core 30 of the oil-gas separation device in the present application is directly arranged at the inner end of the intake pipe 20, during the oil-gas separation process, the oil-gas mixture flowing into the oil-gas barrel 10 through the intake pipe 20 will directly and completely enter the interior of the oil-gas separation core 30, and oil droplets will be separated during the circulation in the oil-gas separation core 30. The oil droplets separated from the oil-gas separation core 30 will directly drip to the bottom of the oil-gas barrel 10, and the clean air separated from the oil-gas separation core 30 can be directly collected and discharged.

[0041] Furthermore, the oil-gas separation device in the present application allows the oil-gas mixture to directly enter the interior of the oil-gas separation core 30 for one oil-gas separation to collect clean air, thereby eliminating the need to set up a primary separation device. This not only effectively reduces costs, but also greatly simplifies the complexity of the internal structure of the oil and gas barrel 10, reduces the volume of the oil and gas barrel 10, and also ensures that the angle and position of the air intake pipe 20 will not be restricted by the primary separation device, and can even further reduce the overall volume of the oil and gas barrel 10.

[0042] Also refer to Figure 6 As shown, the aforementioned oil extraction pipe 40 is located in the accommodating space 11, and the inner end of the oil extraction pipe 40 extends to the bottom surface of the oil and gas barrel 10, and the outer end of the oil extraction pipe 40 passes through the wall of the oil and gas barrel 10, so that after the oil and gas are separated, the oil on the bottom surface of the oil and gas barrel 10 is drained out from the inner end of the oil extraction pipe 40, and then discharged from the oil and gas barrel 10 through the outer end of the oil extraction pipe 40.

[0043] The aforementioned safety valve tube 50 is arranged on the wall of the oil and gas barrel 10. The safety valve tube 50 is connected to the accommodating space 11, and the outer end of the safety valve tube 50 extends from the oil and gas barrel 10 and is provided with a safety valve (not shown in the figure). When the internal pressure of the oil and gas barrel 10 exceeds the default value, the excess pressure is released through the safety valve to protect the oil and gas barrel 10.

[0044] The aforementioned oil replenishing pipe 60 is arranged on the wall of the oil and gas barrel 10. The oil replenishing pipe 60 is connected to the accommodating space 11, and the outer end of the oil replenishing pipe 60 extends from the oil and gas barrel 10 and is provided with a sealing valve (not shown in the figure) for use in oil replenishment, which is usually sealed with a sealing valve.

[0045] The aforementioned oil change pipe 70 is arranged on the wall of the oil and gas barrel 10. The oil change pipe 70 is connected to the accommodating space 11, and the outer end of the oil change pipe 70 extends out from the bottom surface of the oil and gas barrel and is provided with an oil unloading valve (not shown in the figure) for unloading oil when the oil and gas barrel 10 replaces the internal oil.

[0046] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed in the form of a preferred embodiment as above, it is not intended to limit the present application. Any technician with common knowledge in the relevant technical field can, of course, use the technical content disclosed above to make modifications or changes to equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and variations made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An oil-gas separation device, characterized in that Include: An oil and gas barrel having a storage space and a gas outlet; an air intake pipe, which is in communication with the oil and gas barrel, and the inner end of the air intake pipe extends into the accommodating space; and An oil-gas separation core is located in the oil-gas barrel and is connected to the inner end of the intake pipe, so that the oil-gas mixture entering the oil-gas separation core from the inner end of the intake pipe must pass through the oil-gas separation core for oil-gas separation before entering the accommodating space.

2. The oil-gas separation device as claimed in claim 1, wherein the oil-gas separation core comprises an oil-gas space and at least one filter element, the oil-gas space is connected to the inner end of the intake pipe, and the at least one filter element is annular and surrounds the oil-gas space.

3. The oil-gas separation device as claimed in claim 2, wherein the oil-gas separation core further comprises an upper cover and a lower cover, and the upper cover and the lower cover are respectively arranged to cover the top end and the bottom end of the at least one filter element. 4 . The oil-gas separation device as claimed in claim 3 , wherein the oil-gas separation core further comprises at least one mesh tube, and the at least one mesh tube is connected to the upper cover and the lower cover.

5. The oil-gas separation device as claimed in claim 3, wherein the at least one mesh tube comprises an outer mesh tube, the at least one filter element comprises an inner filter element, and the outer mesh tube surrounds and abuts against the outer circumference of the inner filter element. 6 . The oil-gas separation device as claimed in claim 5 , wherein the at least one mesh tube further comprises an inner mesh tube, and the inner filter element surrounds the outer circumference of the inner mesh tube.

7. The oil-gas separation device as claimed in claim 5, wherein the at least one filter element further comprises an outer filter element, and the outer filter element surrounds the outer circumference of the outer mesh tube. 8 . The oil-gas separation device as claimed in claim 1 , wherein the oil-gas separation core is spirally connected to the air intake pipe. 9 . The oil-gas separation device as claimed in claim 1 , wherein at least one sealing member is provided between the oil-gas separation core and the air intake pipe. 10 . The oil-gas separation device as claimed in claim 1 , wherein the inner end of the intake pipe extends upward so that the oil-gas separation core is located above the inner end of the intake pipe.

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