Combined oil-gas separation device and oil-gas separation loop system

Abstract

The utility model discloses a combined oil-gas separation device and an oil-gas separation loop system in the technical field of oil-gas separation. An exhaust port is formed in the top of a tank body, and an oil discharge port is formed in the bottom end of the tank body; the spiral guide vane is arranged in the tank body, and the outer edge of the spiral guide vane is attached to the inner wall of the tank body; the air inlet is formed in the flow guide starting part of the upper part of the spiral flow guide blade, and the orientation of the air inlet is consistent with the flow guide direction of the spiral flow guide blade; the inner edge of the spiral guide vane is attached to the outer wall of the guide channel; air holes are uniformly formed in a column body at the lower part of the flow guide channel, so that oil mist gas swirled to the bottom of the tank body is conveyed upwards; the filter element is arranged above the flow guide channel and the spiral flow guide blade and is used for finely separating the oil mist-containing gas; the edge of the upper end of the flow guide channel extends outwards and is attached to the inner wall of the tank body, so that the upper filter element is isolated from the lower rotational flow oil mist gas.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas separation, in particular to a combined oil and gas separation device and an oil and gas separation circuit system. Background Art

[0002] Oil-gas separation devices are widely used in a variety of fields, including natural gas extraction, air compression, and engine operation. Specifically, natural gas oil-gas separation devices are used to separate oil and gas during the natural gas production process, separating the oil from the natural gas for further processing and use. In the air compression field, oil-gas separation devices are used in compressed air systems to remove oil from the gas, improving air quality and equipment operational stability. In engine operation, they physically separate engine oil from gas to prevent oil from entering the gas system while maintaining the normal circulation and lubrication function of the engine oil. These applications not only help improve the efficiency and quality of production processes, but also extend the life of equipment and reduce maintenance costs.

[0003] For example, CN207203656U discloses an oil-gas separation device that utilizes the centrifugal force of spiral fins and the gravity of oil-containing mist gas to improve the oil-gas separation capability. However, its disadvantage is that when a large amount of oil-containing mist gas enters, the oil-gas separation is not complete.

[0004] CN117504446B discloses a high-efficiency gas-liquid separation device that utilizes a partition, a blade separator, and two baffles. The baffles, baffles, and blade separators improve the efficiency of oil-gas separation to a certain extent. However, its drawback is that under high pressure and high flow rates, the baffles within the tank body may not completely separate the liquid. This device requires special conditions for use and is not suitable for widespread adoption.

[0005] In summary, the existing oil-gas separation device has poor oil-gas separation effect when processing high-pressure, high-flow rate or large-flow oil mist-containing gas. Utility Model Content

[0006] The purpose of the utility model is to provide a combined oil-gas separation device and an oil-gas separation circuit system to solve the technical problem that the oil-gas separation device in the prior art has poor oil-gas separation effect when processing high-pressure, high-flow rate or large-flow oil mist gas.

[0007] In order to solve the above technical problems, the present invention specifically provides a combined oil-gas separation device, comprising:

[0008] A tank body, wherein the cross section of the tank body is circular, and the top of the tank body is provided with an exhaust port, and the bottom of the tank body is provided with an oil drain port;

[0009] A spiral guide vane is provided in the tank body, and the outer edge of the spiral guide vane is in contact with the inner wall of the tank body, and is used to guide the oil mist gas downward to the bottom of the tank body and perform preliminary cyclone separation on the oil mist gas;

[0010] An air inlet is provided on the tank body and is located at the guide starting position of the upper portion of the spiral guide blade, and the direction of the air inlet is consistent with the guide direction of the spiral guide blade;

[0011] The guide channel is provided at the center of the tank body, and the inner edge of the spiral guide blade is in contact with the outer wall of the guide channel. The guide channel is provided in a hollow cylindrical shape with openings at the upper and lower ends, and air holes are evenly provided on the lower cylinder to transport the oil mist gas swirling to the bottom of the tank body upward.

[0012] A filter element is provided above the guide channel and the spiral guide blades, and is used for finely separating the oil mist and gas;

[0013] The upper end edge of the guide channel extends outward and fits against the inner wall of the tank to isolate the filter element above and the swirling oil mist gas below.

[0014] As a preferred solution of the present invention, the upper end of the guide channel extends outward to form a tapered flow channel, which can converge the oil filtered by the filter element into the guide channel.

[0015] As a preferred solution of the present invention, the bottom of the tank body is configured as a spherical surface or a conical surface so that the separated oil converges toward the oil discharge port.

[0016] As a preferred solution of the present invention, the tank body includes a tank body and a flange cover on the top, the flange cover is connected to the tank body through a flange, and the exhaust port is provided on the flange cover.

[0017] As a preferred solution of the present invention, the filter core is fixedly mounted on the flange cover by bolts, and the flange cover and the filter core are sealed by a sealing gasket.

[0018] As a preferred solution of the present invention, the tank body is installed on a base.

[0019] As a preferred solution of the present invention, the oil drain port is connected to a heat dissipation pipeline.

[0020] The utility model further provides an oil-gas separation circuit system, comprising a compressor, a heat dissipation pipeline and the above-mentioned combined oil-gas separation device; the compressor, the combined oil-gas separation device and the heat dissipation pipeline are sequentially connected through pipelines and valves to form a circulation loop;

[0021] The gas separated by the combined oil-gas separation device enters the heat exchange system for circulation, and the oil is cooled through the heat dissipation pipeline and then returns to the cavity of the compressor.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This device uses spiral guide vanes to centrifuge and guide the oil mist gas, guide and initially separate the oil mist gas, and then uses the characteristics of cyclone separation in conjunction with the guide channel to transport the gas still containing a small amount of oil upward to the filter element for secondary fine separation, which can improve the separation effect of oil mist gas and can effectively separate oil and gas even when processing high-pressure, high-flow rate or large-flow oil mist gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0025] Figure 1 This is a schematic cross-sectional view of the combined oil-gas separation device in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of a combined oil-gas separation device with a heat dissipation pipeline installed on the outside.

[0027] The numbers in the figure represent the following:

[0028] 1-exhaust port, 2-flange cover, 3-flange, 4-filter element, 5-tank body, 6-air inlet, 7-spiral guide vane, 8-guide channel, 9-base, 10-oil drain port, 12-tapered flow channel, 13-sealing gasket, 14-heat dissipation pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The utility model specifically provides a combined oil-gas separation device, comprising:

[0031] The tank body has a circular cross section and is provided with an exhaust port 1 at the top and an oil drain port 10 at the bottom;

[0032] The spiral guide blade 7 is provided in the tank body, and the outer edge of the spiral guide blade 7 is in contact with the inner wall of the tank body, and is used to guide the oil mist gas downward to the bottom of the tank body and perform preliminary cyclone separation on the oil and gas;

[0033] The air inlet 6 is provided on the tank body and is located at the guide starting position of the upper part of the spiral guide blade 7, and the direction of the air inlet 6 is consistent with the guide direction of the spiral guide blade 7;

[0034] The guide channel 8 is provided at the center of the tank body, and the inner edge of the spiral guide blade 7 is in contact with the outer wall of the guide channel 8. The guide channel 8 is provided in a hollow cylindrical shape with openings at both ends, and air holes are evenly provided on the lower cylinder to transport the oil mist gas swirling to the bottom of the tank body upward.

[0035] The filter element 4 is arranged above the guide channel 8 and the spiral guide blade 7 and is used for fine separation of oil mist and gas;

[0036] The upper edge of the guide channel 8 extends outward and fits against the inner wall of the tank to isolate the upper filter element 4 from the swirling oil mist gas below, preventing the oil mist gas from flowing to the filter element 4 without preliminary swirling separation.

[0037] The working process of the above-mentioned combined oil-gas separation device is as follows:

[0038] The oil mist gas enters from the air inlet 6 and is guided by the spiral guide blades 7. The oil mist gas enters the tank and performs a swirling motion. Due to the different masses of oil and gas, part of the oil is separated from the gas under the action of centrifugal force and gravity.

[0039] The separated oil flows downward along the outer side of the spiral guide blade 7 and finally flows to the bottom of the tank body and is discharged through the oil drain port 10. The discharged oil is transported to the cavity of equipment such as the compressor and the engine.

[0040] The gas converges towards the central guide channel 8, enters the guide channel 8 through the air holes at the bottom of the guide channel 8, and moves upward along the guide channel 8. After being filtered again by the filter element 4 above, the gas enters the gas circulation system of the compressor, engine or other equipment. The force that attracts the gas to flow to the exhaust port 1 comes from the suction / negative pressure generated by the operation of the unit equipment.

[0041] After the filter element 4 filters the gas, the filtered oil flows to the bottom of the tank through the guide channel 8 under the action of gravity and is discharged through the oil drain port 10. The gas is discharged from the exhaust port 1 and enters the main system.

[0042] In summary, this device utilizes spiral guide vanes 7 to centrifuge and guide the oil mist, providing guidance and initial separation. The cyclonic separation properties, combined with guide channels 8, then transport the remaining oil-containing gas upward to filter element 4 for secondary fine separation. This improves the separation efficiency of the oil mist, effectively separating the oil and gas even when processing high-pressure, high-velocity, or high-volume oil mist. The separated gas circulates throughout the system, while the separated oil is returned to the equipment for lubrication.

[0043] This design effectively solves problems such as inadequate oil-gas separation, severe component wear, and low equipment operating efficiency. This combined oil-gas separation device not only improves the overall operating efficiency of the equipment, but also extends its service life and enhances the safety and reliability of the system.

[0044] Furthermore, the upper end of the guide channel 8 extends outward to form a tapered flow channel 12 . The tapered flow channel 12 has a large diameter at the upper end and a small diameter at the lower end, and can converge the oil filtered by the filter element 4 to the guide channel 8 .

[0045] The spiral guide vanes 7 and the tapered channel are formed by die stamping and welding, and can also be formed by various processing methods such as extrusion forming and cold rolling forming.

[0046] The tapered flow channel 12 is welded to the guide channel 8 , the spiral guide blade 7 is welded to the guide channel 8 , and the spiral guide blade 7 is welded to the tank body.

[0047] Furthermore, the bottom of the tank body is configured to be a spherical surface or a conical surface so that the separated oil converges toward the oil discharge port 10 .

[0048] Furthermore, the tank body includes a tank body 5 and a flange cover 2 on the top. The flange cover 2 is connected to the tank body 5 through a flange 3. The flange cover 2 and the flange 3 are bolted and sealed with a gasket for easy opening and maintenance. The exhaust port 1 is set on the flange cover 2.

[0049] Furthermore, the cylindrical portion at the top and the spherical or conical portion at the bottom of the tank body 5 may also be provided separately and sealed and fixedly connected by bolts and sealing rings.

[0050] Furthermore, the filter element 4 is fixedly mounted on the flange cover 2 by means of bolts, and the flange cover 2 and the filter element 4 are sealed by means of a sealing gasket 13 .

[0051] Furthermore, the tank body is mounted on the base 9 .

[0052] Furthermore, the oil drain port 10 is connected to a heat dissipation pipeline 14 for dissipating heat and cooling the oil.

[0053] The present invention further provides an oil-gas separation circuit system, comprising a compressor, a heat dissipation pipeline 14 and the above-mentioned combined oil-gas separation device; the compressor, the combined oil-gas separation device and the heat dissipation pipeline 14 are sequentially connected through pipelines and valves to form a circulation loop;

[0054] The oil-gas separation device is often installed at the outlet of the compressor. Due to the impact of the compressor during the compression process, the lubricating oil is mixed with the gas, and the gas will bring out some of the lubricating oil in the compressor, causing the amount of oil in the compressor to decrease. When the oil is reduced to a certain level, the friction of the compressor will increase, and the overall system efficiency will decrease, and even cause safety hazards.

[0055] Therefore, an oil-gas separation device must be installed to effectively separate the gas and oil. After separation, the gas enters the heat exchange system for circulation; the oil is cooled through the cooling pipe and finally returns to the compressor cavity to lubricate the various parts of the compressor, thereby improving the operating efficiency of the compressor.

[0056] Therefore, the design and operation of the oil-gas separation device is crucial to the efficiency and safety of the entire system. This design not only prevents oil loss, but also maintains stable operation of the equipment, ensuring long-term and efficient operation of the system.

[0057] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A combined oil-gas separation device, characterized in that: include: A tank body, wherein the cross section of the tank body is circular, and the top of the tank body is provided with an exhaust port (1), and the bottom end of the tank body is provided with an oil discharge port (10); A spiral guide blade (7) is provided in the tank body, and the outer edge of the spiral guide blade (7) is in contact with the inner wall of the tank body, and is used to guide the oil mist gas downward to the bottom of the tank body and perform preliminary cyclone separation on the oil mist gas; An air inlet (6) is provided on the tank body and is located at the guide starting position of the upper portion of the spiral guide blade (7), and the direction of the air inlet (6) is consistent with the guide direction of the spiral guide blade (7); The guide channel (8) is arranged at the center of the tank body, and the inner edge of the spiral guide blade (7) is in contact with the outer wall of the guide channel (8); the guide channel (8) is arranged in a hollow cylindrical shape with openings at both ends, and air holes are evenly arranged on the lower cylinder to transport the oil mist gas swirling to the bottom of the tank body upward; A filter core (4) is arranged above the guide channel (8) and the spiral guide blade (7) and is used for finely separating the oil mist-containing gas; The upper edge of the guide channel (8) extends outward and fits against the inner wall of the tank body to isolate the filter element (4) above and the swirling oil mist gas below.

2. A combined oil-gas separation device according to claim 1, characterized in that: The upper end of the guide channel (8) extends outward to form a tapered flow channel (12), which can converge the oil filtered by the filter element (4) into the guide channel (8).

3. The combined oil-gas separation device according to claim 1, characterized in that: The bottom of the tank body is configured as a spherical surface or a conical surface so that the separated oil converges toward the oil discharge port (10).

4. The combined oil-gas separation device according to claim 1, characterized in that: The tank body comprises a tank body (5) and a flange cover (2) on the top, the flange cover (2) is connected to the tank body (5) via a flange (3), and the exhaust port (1) is arranged on the flange cover (2).

5. The combined oil-gas separation device according to claim 4, characterized in that: The filter core (4) is fixedly mounted on the flange cover (2) by means of bolts, and the flange cover (2) and the filter core (4) are sealed by means of a sealing gasket (13).

6. The combined oil-gas separation device according to claim 1, characterized in that: The tank body is mounted on a base (9).

7. A combined oil-gas separation device according to any one of claims 1 to 6, characterized in that: The oil drain port (10) is connected to a heat dissipation pipeline (14).

8. An oil-gas separation circuit system, characterized in that: The invention comprises a compressor, a heat dissipation pipeline (14) and a combined oil-gas separation device according to any one of claims 1 to 6; the compressor, the combined oil-gas separation device and the heat dissipation pipeline (14) are connected in sequence through pipelines and valves to form a circulation loop; The gas separated by the combined oil-gas separation device enters the heat exchange system for circulation, and the oil is cooled through the heat dissipation pipeline (14) and then returns to the cavity of the compressor.

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