An oil and gas separation device

Abstract

The utility model provides a kind of oil-gas separation device.The bucket cover is detached and set on the top of separation barrel, forms sealed cavity, and the oil fine separator is set in the sealed cavity or outside the sealed cavity, and the air inlet of the oil fine separator is communicated with the sealed cavity, the air inlet pipe is communicated with the sealed cavity, the first end of the air outlet pipe is set outside the separation barrel, the second end of the air outlet pipe is respectively communicated with the air outlet of multiple oil fine separators, and one end of the oil return pipe is set outside the separation barrel, and located below the air outlet pipe, the other end is communicated with the second end of the air outlet pipe.Through the above-mentioned oil-gas separation device, oil and gas in compressed gas can be effectively separated by oil fine separator, and then the performance of oil-injected screw compressor can be guaranteed after compressed gas enters the oil-injected screw compressor.

Description

Technical Field

[0001] This utility model relates to the field of oil-gas separation, specifically to an oil-gas separation device. Background Technology

[0002] Oil-filled screw compressors are among the most widely used compressors due to their high energy efficiency ratio. However, the gas they discharge contains a large amount of lubricating oil, so there is an urgent need for an oil-gas separation device that can remove as much oil as possible from the compressed gas before it is used. Utility Model Content

[0003] In view of this, the present invention provides an oil-gas separation device to remove oil from compressed gas.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The first aspect of this utility model discloses an oil-gas separation device, comprising: a separation tank, an inlet pipe, an outlet pipe, an oil return pipe, a tank cover, and multiple oil separators;

[0006] The lid is detachable and installed on top of the separation tank, forming a sealed cavity;

[0007] The oil separator is installed inside or outside the sealed cavity, and the air inlet of the oil separator is connected to the sealed cavity;

[0008] The intake pipe is connected to the sealed cavity;

[0009] The first end of the vent pipe is located outside the separation tank, and the second end of the vent pipe is connected to the vent ports of multiple oil-fine separators respectively.

[0010] One end of the return oil pipe is located outside the separator and below the vent pipe, while the other end is connected to the second end of the vent pipe.

[0011] The side wall of the separator also has an oil outlet.

[0012] Preferably, the oil separator is disposed in a sealed cavity, and the oil-gas separation device further includes: multiple plugs;

[0013] The oil separator consists of a cylindrical body and an annular filter screen;

[0014] An annular filter screen is installed inside the cylinder;

[0015] The cylinder has multiple air inlets;

[0016] The lower end of the oil separator is the air outlet;

[0017] The plug is located at the top of the oil separator.

[0018] Preferably, the intake pipe includes: a first connecting pipe and a second connecting pipe;

[0019] The first connecting tube is a trumpet-shaped structure with the opening facing downwards;

[0020] The first end of the second connecting pipe protrudes from the side wall of the separator to form an air inlet, and the second end is connected to the upper end of the first connecting pipe.

[0021] Preferably, it also includes: a ring-shaped tube;

[0022] The annular tube is horizontally installed in the sealed cavity, and the lower end of the first connecting tube passes through the annular tube.

[0023] The annular pipe has multiple pipe sections;

[0024] The outlet of the oil separator is detachably connected to the pipe section;

[0025] An annular tube is fitted onto the first connecting tube;

[0026] The second end of the vent pipe is connected to the upper part of the annular pipe;

[0027] The return oil pipe is connected to the bottom of the annular pipe.

[0028] Preferably, it also includes: a fixing plate;

[0029] The fixing plate is horizontally set inside the separation tank to form an upper chamber and a lower chamber. The fixing plate has multiple vent holes for connecting the upper chamber and the lower chamber.

[0030] The fixing plate has through holes for installing the annular tube;

[0031] The first connecting pipe is coaxially arranged with the annular pipe, and the outer wall of the first connecting pipe and the inner wall of the annular pipe are provided with a predetermined gap.

[0032] Preferably, it also includes: an expansion bucket;

[0033] The lower end of the extension bucket is used for detachable connection with the separation bucket, and the upper end is used for detachable connection with the bucket lid;

[0034] The upper end of the oil-fine separator is connected to the air outlet of another oil-fine separator.

[0035] Preferably, it also includes: multiple cover plates;

[0036] The barrel lid has multiple disassembly ports that correspond one-to-one with the positions of multiple oil separators;

[0037] The cover is detachably located at the disassembly port.

[0038] Preferably, the oil separator is located outside the sealed cavity;

[0039] The barrel lid has multiple mounting ports for the detachable installation of an oil separator;

[0040] The oil separator consists of a cylindrical body and an annular filter screen;

[0041] An annular filter screen is installed inside the cylinder;

[0042] The top of the cylinder is a closed end, and the bottom of the cylinder forms an air inlet that communicates with the sealed cavity between it and the annular filter screen.

[0043] The lower end of the annular filter is connected to the second end of the air outlet pipe.

[0044] Preferably, it also includes: a ring-shaped tube;

[0045] The annular tube is installed inside the sealed cavity, and the annular tube has multiple tube sections;

[0046] The outlet of the oil separator is connected to the pipe section;

[0047] The second end of the vent pipe is connected to the bottom of the annular pipe.

[0048] Preferably, it further includes: an annular spoiler and a mounting plate; the mounting plate is disposed in the sealed cavity to form an upper chamber and a lower chamber;

[0049] The annular spoiler is vertically installed in the lower chamber, and the upper end of the annular spoiler is connected to the upper chamber;

[0050] The air outlet of the air inlet pipe is located between the annular baffle and the separator, and the air outlet of the air inlet pipe is set at a preset angle to the outer wall of the annular baffle.

[0051] The second aspect of this utility model discloses an oil-gas separation device, comprising: a separation tank, an air inlet pipe, an air outlet pipe, an oil return pipe, a tank cover, an air guide pipe, an oil guide pipe, and multiple oil separators;

[0052] The barrel cover is detachable and installed on the top of the separator barrel to form a sealed cavity. The barrel cover has several installation ports for installing the oil separator.

[0053] The intake pipe is connected to the sealed cavity;

[0054] Both the air guide pipe and the oil guide pipe are located in the sealed cavity. The first end of the air guide pipe passes through the installation port and connects to the air outlet of the oil separator.

[0055] The first end of the oil guide pipe passes through the installation port and connects to the air outlet of the oil separator. The height of the first end of the oil guide pipe is lower than the height of the first end of the air guide pipe.

[0056] One end of the return oil pipe is located outside the separator tank, and the other end is connected to the second end of the guide oil pipe;

[0057] The first end of the vent pipe is located outside the separation tank, and the second end is connected to the second end of the vent pipe.

[0058] The side wall of the separator also has an oil outlet.

[0059] Preferably, the oil separator includes a cylindrical body and an annular filter screen;

[0060] An annular filter screen is installed inside the cylinder;

[0061] The top of the cylinder is a closed end, and the bottom of the cylinder forms an air inlet that communicates with the sealed cavity between it and the annular filter screen.

[0062] The lower end of the annular filter screen is the air outlet of the oil separator.

[0063] Preferably, the air guide tube is disposed inside the oil guide tube, and the first end of the air guide tube extends out from the first end of the oil guide tube.

[0064] Preferably, it also includes: a guide pipe, a connecting pipe, a first partition, a second partition, and a third partition;

[0065] The first partition, the second partition, and the third partition are arranged sequentially from top to bottom in the sealed cavity to form the first chamber, the second chamber, the third chamber, and the fourth chamber;

[0066] The first and second partitions are provided with a first connecting hole and a second connecting hole at corresponding locations;

[0067] The connecting pipe is disposed between the first partition and the second partition, with one end of the connecting pipe being in close contact with the first connecting hole and the other end being in close contact with the second connecting hole;

[0068] The guide tube is located in the fourth chamber, and the upper end of the guide tube passes through the third partition and is in close contact with the second connecting hole;

[0069] The second end of the oil guide pipe passes through the first partition and communicates with the second chamber;

[0070] The second end of the vent pipe extends from the second end of the oil pipe and passes through the second partition to communicate with the third chamber;

[0071] The second end of the vent pipe is connected to the third chamber;

[0072] The outer wall of the second chamber has a first oil outlet that is connected to the oil outlet pipe.

[0073] Preferably, it also includes: multiple sealing plates;

[0074] Multiple sealing plates are set on the lower end face of the third partition, and together with the guide pipe, the third partition and the separation barrel, they form an oil collection chamber located below the air outlet pipe;

[0075] The third partition has an oil outlet that communicates with the oil collection chamber;

[0076] A second oil outlet is provided on the side wall of the oil collecting chamber.

[0077] Based on the oil-gas separation device provided by this utility model, a barrel cover is disassembled and placed on top of the separation barrel to form a sealed cavity. An oil-fine separator is placed inside or outside the sealed cavity, with its inlet connected to the sealed cavity and its inlet pipe connected to the sealed cavity. The first end of the outlet pipe is located outside the separation barrel, and the second end of the outlet pipe is connected to the outlets of multiple oil-fine separators. One end of the return oil pipe is located outside the separation barrel, below the outlet pipe, and the other end is connected to the second end of the outlet pipe. Through the oil-gas separation device disclosed above, oil and gas in compressed gas can be effectively separated by the oil-fine separator, ensuring the performance of the oil-lubricated screw compressor. Attached Figure Description

[0078] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0079] Figure 1 A schematic diagram of the structure of an oil-gas separation device provided in an embodiment of this utility model;

[0080] Figure 2 A cross-sectional view of an oil-gas separation device with a built-in oil-gas separator provided in an embodiment of this utility model;

[0081] Figure 3 A top view of an oil-gas separation device with a built-in oil-gas separator provided in an embodiment of this utility model;

[0082] Figure 4 A cross-sectional schematic diagram of the oil-gas separation device AA with a built-in oil-gas separator provided in this embodiment of the utility model;

[0083] Figure 5 A cross-sectional schematic diagram of the oil-gas separation device BB with a built-in oil-gas separator provided in this embodiment of the utility model;

[0084] Figure 6 A cross-sectional view from another angle of the oil-gas separation device with a built-in oil-gas separator provided in an embodiment of this utility model;

[0085] Figure 7 A schematic diagram of the structure of the oil-fine separator with built-in oil-gas separator provided in this embodiment of the utility model;

[0086] Figure 8 A schematic diagram of the structure of another oil-gas separation device with a built-in oil-gas separator provided in an embodiment of this utility model;

[0087] Figure 9 A schematic diagram of the structure of the oil-gas separation device of the external oil-gas separator provided in this embodiment of the utility model;

[0088] Figure 10 A cross-sectional view of the oil-gas separation device of the external oil-gas separator provided in an embodiment of this utility model;

[0089] Figure 11 A top view of the oil-gas separation device of the external oil-gas separator provided in this embodiment of the utility model;

[0090] Figure 12 A cross-sectional schematic diagram of the oil-gas separation device AA of the external oil-gas separator provided in this embodiment of the utility model;

[0091] Figure 13 A cross-sectional schematic diagram of the oil-gas separation device BB of the external oil-gas separator provided in this embodiment of the utility model;

[0092] Figure 14 This is a schematic diagram of the structure of an external oil-gas separator provided in an embodiment of the present invention.

[0093] The components include: a separator 1, an upper chamber 1-1, a lower chamber 1-2, an oil outlet 1-3, an oil discharge port 1-4, a first oil outlet 1-5, a second oil outlet 1-6, a first chamber 1-7, a second chamber 1-8, a third chamber 1-9, and a fourth chamber 1-10; an air inlet pipe 2, a first connecting pipe 2-1, and a second connecting pipe 2-2; an air outlet pipe 3; an oil return pipe 4; a barrel cover 5; an oil separator 6, a cylinder 61, and an annular filter screen 62; a plug 7; an annular pipe 8 and a pipe section 81; a fixing plate 9; an expansion barrel 10; a cover plate 11; an annular baffle 12; a mounting plate 13; an air guide pipe 14; an oil guide pipe 15; a flow guide pipe 16; a connecting pipe 17; a first partition 18 and a first connecting hole 181; a second partition 19 and a second connecting hole 191; a third partition 20; an oil collection chamber 21; and a sealing plate 22. Detailed Implementation

[0094] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0095] This utility model embodiment provides an oil-gas separation device, see [link to relevant documentation] Figure 1 and combined Figures 2 to 13 The Figure 1 This is a schematic diagram of an oil-gas separation device, which includes: a separation tank 1, an air inlet pipe 2, an air outlet pipe 3, an oil return pipe 4, a tank cover 5, and multiple oil separators 6;

[0096] The lid 5 is detached and installed on top of the separation bucket 1 to form a sealed cavity;

[0097] The oil separator 6 is installed inside or outside the sealed cavity, and the air inlet of the oil separator 6 is connected to the sealed cavity.

[0098] Intake pipe 2 is connected to the sealed cavity;

[0099] The first end of the vent pipe 3 is located outside the separation tank 1, and the second end of the vent pipe 3 is connected to the vent ports of multiple oil separators 6 respectively.

[0100] One end of the return oil pipe 4 is located outside the separator 1 and below the vent pipe 3, while the other end is connected to the second end of the vent pipe 3.

[0101] The side wall of the separator 1 is also provided with oil outlets 1-3.

[0102] It should be noted that the separation tank 1 of this application is equipped with lubricating oil. Then, the compressed gas enters the separation tank 1 through the air inlet of the air inlet pipe 2. The impact between the compressed gas and the surface of the lubricating oil and the gravity separation can separate most of the lubricating oil in the compressed gas. At this time, the gas enters the oil fine separator 6, and the oil in the compressed gas will be intercepted by the oil fine separator 6. Then the oil is discharged through the oil return pipe 4, and the compressed gas is discharged through the air outlet pipe 3.

[0103] It should also be noted that the oil return pipe 4 of this application can guide the oil back to the low-pressure end of the oil-filled screw compressor for reuse.

[0104] It is worth noting that this application allows the lubricating oil to be circulated back to the compressor head by opening oil outlets 1-3 on the side wall of the separator 1.

[0105] In this embodiment of the invention, the barrel cover 5 is disassembled and installed on the top of the separating barrel 1 to form a sealed cavity. An oil separator 6 is placed inside or outside the sealed cavity, with its inlet connected to the sealed cavity and its inlet pipe 2 connected to the sealed cavity. The first end of the outlet pipe 3 is located outside the separating barrel 1, and the second end of the outlet pipe 3 is connected to the outlets of multiple oil separators 6. One end of the return oil pipe 4 is located outside the separating barrel 1, below the outlet pipe 3, and the other end is connected to the second end of the outlet pipe 3. Through the oil-gas separation device disclosed above, the oil and gas in the compressed gas can be effectively separated by the oil separator 6, ensuring the performance of the oil-lubricated screw compressor.

[0106] The oil-fine separator 6 of this application can be installed inside or outside the sealed cavity. The following is an example illustrating the installation location of the oil-fine separator 6.

[0107] For details, please refer to Figures 1 to 8 The oil separator 6 is installed in the sealed cavity, and the oil-gas separation device also includes: multiple plugs 7;

[0108] The oil separator 6 includes a cylinder 61 and an annular filter screen 62;

[0109] An annular filter screen 62 is disposed inside the cylindrical body 61;

[0110] The cylinder 61 has multiple air inlets;

[0111] The lower end of the oil separator 6 is the air outlet;

[0112] The plug 7 is located at the upper end of the oil separator 6.

[0113] It should be noted that the annular filter 62 is placed inside the cylinder 61, and multiple air inlets are provided in the cylinder 61. The lower end of the oil-fine separator 6 is set as the air outlet, and the plug 7 is set at the upper end of the oil-fine separator 6. When the number of oil-fine separators 6 required by the oil-gas separation device is large, without changing the existing separation tank 1, the upper end of the oil-fine separator 6 is connected to the air outlet of another oil-fine separator 6 and stacked. The plug 7 is set at the upper end of the oil-fine separator 6 to meet the needs of adding oil-fine separators 6.

[0114] It should also be noted that if the upper end of the oil separator 6 does not need to be stacked, the oil separator 6 and the plug head 7 can be set as an integral structure.

[0115] Specifically, the intake pipe 2 includes: a first connecting pipe 2-1 and a second connecting pipe 2-2;

[0116] The first connecting tube 2-1 is a trumpet-shaped structure with its opening facing downwards;

[0117] The first end of the second connecting pipe 2-2 protrudes from the side wall of the separator 1 to form an air inlet, and the second end is connected to the upper end of the first connecting pipe 2-1.

[0118] It should be noted that the first connecting pipe 2-1 is set as a funnel-shaped structure with the opening facing downwards, and the first end of the second connecting pipe 2-2 protrudes from the side wall of the separator 1 to form an air inlet, and the second end is connected to the upper end of the first connecting pipe 2-1. Thus, after the compressed gas enters the first connecting pipe 2-1, the funnel-shaped structure allows the oil-containing gas to fully contact the lubricating oil surface, so that most of the lubricating oil in the compressed gas is separated.

[0119] Furthermore, the oil-gas separation device also includes: an annular pipe 8;

[0120] The annular tube 8 is disposed within the sealed cavity, and the lower end of the first connecting tube 2-1 passes through the annular tube 8.

[0121] The annular pipe 8 is provided with multiple pipe sections 81;

[0122] The outlet of the oil separator 6 is detachably connected to the pipe section 81;

[0123] The second end of the vent pipe 3 is connected to the upper part of the annular pipe 8;

[0124] The return oil pipe 4 is connected to the bottom of the annular pipe 8.

[0125] It should be noted that by setting up an annular pipe 8 and placing it horizontally within the sealed cavity, with the lower end of the first connecting pipe 2-1 passing through the annular pipe 8, and multiple pipe sections 81 set in the annular pipe 8, the outlet of the oil-fine separator 6 is detachably connected to the pipe section 81, the second end of the outlet pipe 3 is connected to the upper part of the annular pipe 8, and the return oil pipe 4 is connected to the bottom of the annular pipe 8, the compressed gas enters the oil-fine separator 6, and the oil in the compressed gas is intercepted by the oil-fine separator 6. Subsequently, both the compressed gas and the oil enter the annular pipe 8. Due to the gravity of the oil, the oil can be discharged through the return oil pipe 4 connected to the annular pipe 8, while the compressed gas is discharged through the outlet pipe 3 connected to the annular pipe 8.

[0126] It is worth noting that when the number of oil separators 6 required by the oil-gas separation device is small, the pipe section 81 can be directly sealed by the plug 7.

[0127] Specifically, the fixing plate 9 is horizontally set inside the separation barrel 1 to form an upper chamber 1-1 and a lower chamber 1-2. The fixing plate 9 has multiple vent holes for connecting the upper chamber 1-1 and the lower chamber 1-2.

[0128] The fixing plate 9 has a through hole for installing the annular tube 8;

[0129] The first connecting pipe 2-1 is coaxially arranged with the annular pipe 8, and the outer wall of the first connecting pipe 2-1 and the inner wall of the annular pipe 8 are provided with a predetermined gap.

[0130] It should be noted that the fixing plate 9 is horizontally set inside the separation tank 1 to form an upper chamber 1-1 and a lower chamber 1-2. The fixing plate 9 has multiple through holes for connecting the upper chamber 1-1 and the lower chamber 1-2. After the compressed gas enters the lower chamber 1-2 through the air inlet of the air inlet pipe 2, most of the lubricating oil in the compressed gas can be separated by the impact with the lubricating oil surface and gravity separation. Then the gas enters the upper chamber 1-1 through the through holes of the fixing plate 9, and then the compressed gas enters the oil separator 6 for separation. The first connecting pipe 2-1 is coaxially set with the annular pipe 8, that is, the first connecting pipe 2-1 passes through the center of the annular pipe 8, and the outer wall of the first connecting pipe 2-1 and the inner wall of the annular pipe 8 are provided with a predetermined gap. In this way, the Venturi effect generated by the first connecting pipe 2-1 can guide the oil-containing gas with a higher density in the upper chamber 1-1 to the lower chamber 1-2, so that the oil is separated as much as possible before the gas enters the oil separator.

[0131] Furthermore, the oil-gas separation device also includes: an expansion tank 10;

[0132] The lower end of the extension bucket 10 is used to detach and connect to the separation bucket 1, and the upper end is used to detach and connect to the bucket lid 5.

[0133] It should be noted that when the number of oil fine separators 6 required by the oil-gas separation device is large, and multiple oil fine separators 6 need to be stacked, but the height of the current separation tank 1 is insufficient, the tank cover 5 can be separated from the separation tank 1 first, and then the upper end of the oil fine separator 6 can be connected to the gas outlet of another oil fine separator 6 for stacking, and the lower end of the extension tank 10 can be connected to the upper end of the separation tank 1, and the upper end of the extension tank 10 can be connected to the tank cover 5, so as to realize the stacking of multiple oil fine separators 6.

[0134] Furthermore, the oil-gas separation device also includes: multiple cover plates 11;

[0135] The barrel lid 5 has multiple disassembly ports that correspond one-to-one with the positions of multiple oil separators 6;

[0136] The cover plate 11 is detachably mounted at the disassembly port.

[0137] It should be noted that, since the barrel cover 5 is heavy and difficult to disassemble, this application provides multiple disassembly ports on the barrel cover 5 that correspond one-to-one with the positions of multiple oil separators 6, and the cover plate 11 is detachably installed at the disassembly port. Since the cover plate 11 is small in size, when it is necessary to replace or maintain the oil separator 6, the oil separator 6 can be easily disassembled by disassembling and installing the cover plate 11.

[0138] Preferably, the cover plate 11 is fixed to the upper end face of the bucket lid 5 by multiple bolts.

[0139] It should be noted that the cover plate 11 can be fixed to the upper surface of the bucket lid 5 by bolts, or by other snap-fit ​​structures, or by other detachable structures. Those skilled in the art can choose according to their needs.

[0140] For details, please refer to Figures 9 to 13 The oil separator 6 is located outside the sealed cavity;

[0141] The barrel cover 5 has multiple mounting ports for the detachable installation of the oil separator 6;

[0142] The oil separator 6 includes a cylinder 61 and an annular filter screen 62;

[0143] An annular filter screen 62 is disposed inside the cylindrical body 61;

[0144] The top of the cylinder 61 is a closed end, and the bottom of the cylinder 61 and the annular filter 62 form an air inlet that communicates with the sealed cavity.

[0145] The lower end of the annular filter 62 is connected to the second end of the air outlet pipe 3.

[0146] It should be noted that the oil separator 6 is placed outside the sealed cavity, and multiple mounting ports for detachable installation of the oil separator 6 are provided on the barrel cover 5. The annular filter 62 is placed inside the cylinder 61. The top of the cylinder 61 is a closed end, and the bottom of the cylinder 61 and the annular filter 62 form an air inlet communicating with the sealed cavity. The lower end of the annular filter 62 is connected to the second end of the air outlet pipe 3. After the compressed gas enters the sealed cavity through the air inlet pipe 2, it enters the oil separator 6 through the air inlet formed between the bottom of the cylinder 61 and the annular filter 62. The oil in the compressed gas is intercepted by the oil separator 6, and then the oil is discharged through the oil return pipe 4, while the compressed gas is discharged through the air outlet pipe 3.

[0147] It should also be noted that the structure of the oil separator 6 installed inside the sealed cavity in this application differs from that of the oil separator 6 installed outside the sealed cavity. Therefore, those skilled in the art can choose according to their needs.

[0148] It is worth noting that placing the oil separator 6 outside the sealed cavity can effectively improve the efficiency of disassembly and installation when replacing the oil separator 6.

[0149] Furthermore, the oil-gas separation device also includes: an annular pipe 8;

[0150] An annular tube 8 is disposed within a sealed cavity, and the annular tube 8 is provided with multiple tube sections 81;

[0151] The outlet of the oil separator 6 is connected to the pipe section 81;

[0152] The second end of the vent pipe 3 is connected to the bottom of the annular pipe 8.

[0153] It should be noted that by setting up an annular pipe 8 and placing it inside a sealed cavity, and by setting multiple pipe sections 81 in the annular pipe 8, and connecting the outlet of the oil separator 6 to the pipe section 81, and connecting the second end of the outlet pipe 3 to the bottom of the annular pipe 8, compressed gas enters the oil separator 6, and the oil in the compressed gas is intercepted by the oil separator 6. Subsequently, both the compressed gas and the oil enter the annular pipe 8. Due to the gravity of the oil, the oil can be discharged through the return oil pipe 4 connected to the annular pipe 8, while the compressed gas is discharged through the outlet pipe 3 connected to the annular pipe 8.

[0154] Furthermore, the oil-gas separation device also includes: an annular baffle 12 and a mounting plate 13;

[0155] Mounting plate 13 is disposed in the sealed cavity, forming upper chamber 1-1 and lower chamber 1-2;

[0156] The annular spoiler 12 is vertically disposed in the lower chamber 1-2, and the upper end of the annular spoiler 12 is connected to the upper chamber 1-1;

[0157] The air outlet of the air inlet pipe 2 is located between the annular baffle 12 and the separation barrel 1, and the air outlet of the air inlet pipe 2 is set at a preset angle to the outer wall of the annular baffle 12.

[0158] It should be noted that by setting the annular baffle 12 and the mounting plate 13, and setting the mounting plate 13 in the sealed cavity to form the upper chamber 1-1 and the lower chamber 1-2, and by setting the annular baffle 12 vertically in the lower chamber 1-2, with the upper end of the annular baffle 12 connected to the upper chamber 1-1, the outlet of the air inlet pipe 2 is located between the annular baffle 12 and the separation barrel 1, and the outlet of the air inlet pipe 2 is set at a preset angle to the outer wall of the annular baffle 12, so that after the compressed gas enters the separation barrel 1 through the air inlet pipe 2, it can move along the annular chamber formed by the separation barrel 1 and the annular baffle 12, thereby forming a cyclone, and the compressed gas will separate most of the oil and gas with the help of the cyclone, while the oil-containing gas will rise into the oil fine separator 6 for filtration.

[0159] Preferably, the cross-section of the annular tube 8 is circular.

[0160] It should be noted that the cross-section of the annular tube 8 can be circular, rectangular, or other shapes. Those skilled in the art can choose according to their needs. However, the cross-section of the annular tube 8 in this application is preferably circular.

[0161] Preferably, the separation bucket 1 has a cylindrical structure.

[0162] It should be noted that the separation tank 1 can be a cylindrical structure or a polygonal prism structure, and those skilled in the art can choose according to their needs.

[0163] Preferably, the oil-gas separation device further includes any one or more of the following: differential pressure gauge, level gauge, safety valve, temperature gauge, and pressure gauge.

[0164] Preferably, the bottom of the separator 1 is provided with an oil discharge port 1-4.

[0165] It should be noted that by opening oil discharge ports 1-4 at the bottom of the separator 1, it is possible to easily drain all the oil inside the separator 1.

[0166] This utility model embodiment also provides another oil-gas separation device, see reference. Figure 14 , Figure 14 The schematic diagram of the oil-gas separation device provided in this embodiment of the utility model shows that the oil-gas separation device includes: a separation tank 1, an air inlet pipe 2, an air outlet pipe 3, an oil return pipe 4, a tank cover 5, an air guide pipe 14, an oil guide pipe 15, and multiple oil separators 6.

[0167] The barrel cover 5 is detached and installed on the top of the separation barrel 1 to form a sealed cavity. The barrel cover 5 has several installation ports for installing the oil separator 6.

[0168] Intake pipe 2 is connected to the sealed cavity;

[0169] Both the air guide pipe 14 and the oil guide pipe 15 are located in the sealed cavity. The first end of the air guide pipe 14 passes through the installation port and is connected to the air outlet of the oil separator 6.

[0170] The first end of the oil guide pipe 15 passes through the installation port and is connected to the air outlet of the oil separator 6. The height of the first end of the oil guide pipe 15 is lower than the height of the first end of the air guide pipe 14.

[0171] One end of the return oil pipe 4 is located outside the separator 1, and the other end is connected to the second end of the guide oil pipe 15;

[0172] The first end of the air outlet pipe 3 is located outside the separation tank 1, and the second end is connected to the second end of the air guide pipe 14.

[0173] The side wall of the separator 1 is also provided with an oil outlet.

[0174] It should be noted that, by opening an installation port in the barrel cover 5 and installing the oil separator 6 in the installation port, the first end of the oil guide pipe 15 and the first end of the air guide pipe 14 both extend into the oil separator 6. Since the height of the first end of the oil guide pipe 15 is lower than the height of the first end of the air guide pipe 14, and the oil separated in the oil separator 6 accumulates under the action of gravity, the oil separated in the oil separator 6 can directly enter the oil guide pipe 15 and flow to the return oil pipe 4 for return oil through the oil guide pipe 15, while the separated gas enters the outlet pipe 3 through the air guide pipe 14.

[0175] Furthermore, by opening an installation port in the barrel cover 5 and installing the oil separator 6 in the installation port, the disassembly and installation efficiency of the oil separator 6 can be effectively improved.

[0176] It should also be noted that in this application, the gas and oil separated by the oil separator 6 are directly separated through the gas guide pipe 14 and the oil guide pipe 15, which can effectively prevent the high-speed gas after separation from atomizing the separated oil.

[0177] In this embodiment of the utility model, the barrel cover 5 is disassembled and installed on the top of the separation barrel 1 to form a sealed cavity. Several installation ports for installing the oil separator 6 are opened on the barrel cover 5. The air inlet pipe 2 is connected to the sealed cavity. The air guide pipe 14 and the oil guide pipe 15 are both set in the sealed cavity. The first end of the air guide pipe 14 passes through the installation port and is connected to the air outlet of the oil separator 6. The first end of the oil guide pipe 15 passes through the installation port and is connected to the air outlet of the oil separator 6. The height of the first end of the oil guide pipe 15 is lower than the height of the first end of the air guide pipe 14. One end of the return oil pipe 4 is set outside the separation barrel 1, and the other end is connected to the second end of the oil guide pipe 15. The first end of the air outlet pipe 3 is set outside the separation barrel 1, and the second end is connected to the second end of the air guide pipe 14. An oil outlet is also opened on the side wall of the separation barrel 1. The oil-gas separation device disclosed above can not only effectively separate oil and gas in compressed gas through the oil separator 6, thus ensuring the performance of the oil-lubricated screw compressor after the compressed gas enters it, but also allows the oil separator 6 to be replaced by the operator later.

[0178] Specifically, the oil separator 6 includes a cylinder 61 and an annular filter screen 62;

[0179] An annular filter screen 62 is disposed inside the cylindrical body 61;

[0180] The top of the cylinder 61 is a closed end, and the bottom of the cylinder 61 and the annular filter 62 form an air inlet that communicates with the sealed cavity.

[0181] The lower end of the annular filter 62 is the air outlet of the oil separator 6.

[0182] It should be noted that the annular filter screen is set inside the cylinder 61. The top of the cylinder 61 is a closed end, and the bottom of the cylinder 61 and the annular filter screen 62 form an air inlet that communicates with the sealed cavity. The lower end of the annular filter screen 62 is connected to the air outlet pipe 3 through the air guide pipe 14. After the compressed gas enters the sealed cavity through the air inlet pipe 2, it will enter the oil separator 6 through the installation port and the air inlet between the bottom of the cylinder 61 and the annular filter screen 62. The oil in the compressed gas will be intercepted by the oil separator 6. Then the oil will be transported to the return oil pipe 4 through the oil guide pipe 15 or discharged from the first oil outlet 1-5. The compressed gas will be transported to the air outlet pipe 3 through the air guide pipe 14 and discharged.

[0183] Furthermore, the air guide pipe 14 is disposed inside the oil guide pipe 15, and the first end of the air guide pipe 14 extends out from the first end of the oil guide pipe 15.

[0184] It should be noted that the air guide pipe 14 can be installed inside the oil guide pipe 15 or separately. Those skilled in the art can configure it according to their needs.

[0185] Furthermore, it also includes: a guide pipe 16, a connecting pipe 17, a first baffle 18, a second baffle 19, and a third baffle 20;

[0186] The first partition 18, the second partition 19 and the third partition 20 are arranged in the sealed cavity from top to bottom to form the first chamber 1-7, the second chamber 1-8, the third chamber 1-9 and the fourth chamber 1-10;

[0187] The first partition 18 and the second partition 19 are provided with a first connecting hole 181 and a second connecting hole 191 at corresponding positions;

[0188] The connecting pipe 17 is disposed between the first partition 18 and the second partition 19, and one end of the connecting pipe 17 is in close contact with the first connecting hole, and the other end is in close contact with the second connecting hole;

[0189] The guide tube 16 is disposed in the fourth chamber 1-10, and the upper end of the guide tube 16 passes through the third partition 20 and is in close contact with the second connecting hole;

[0190] The second end of the oil guide pipe 15 passes through the first partition 18 and communicates with the second chamber 1-8;

[0191] The second end of the air guide tube 14 extends from the second end of the oil guide tube 15 and passes through the second partition 19 to communicate with the third chamber 1-9;

[0192] The second end of the vent pipe 3 is connected to the third chamber 1-9;

[0193] The outer wall of the second chamber 1-8 has a first oil outlet 1-5 that is connected to the oil outlet pipe.

[0194] It should be noted that the first partition 18, the second partition 19, and the third partition 20 are arranged sequentially from top to bottom in the sealed cavity to form the first chamber 1-7, the second chamber 1-8, the third chamber 1-9, and the fourth chamber 1-10. A first connecting hole 181 and a second connecting hole 191 are provided at corresponding positions on the first partition 18 and the second partition 19. A connecting pipe 17 is placed between the first partition 18 and the second partition 19, with one end of the connecting pipe 17 tightly connected to the first connecting hole 181 and the other end tightly connected to the second connecting hole. A guide pipe 16 is placed in the fourth chamber 1-10, with its upper end passing through the third partition 20 and tightly connected to the second connecting hole 191. The second end of the oil guide pipe 15... The first end of the gas pipe 14 extends from the second end of the oil pipe 15 and passes through the second partition 19 to communicate with the third chamber 1-9. The second end of the gas outlet pipe 3 is connected to the third chamber 1-9. The outer wall of the second chamber 1-8 is provided with a first oil outlet 1-5 connected to the oil outlet pipe. Thus, the oil pipe 15 can transport the oil separated by the oil separator 6 to the second chamber 1-8, and finally transport it to the oil outlet pipe through the first oil outlet 1-5 located on the outer wall of the second chamber 1-8. The gas separated by the oil separator 6 is transported to the third chamber 1-9 through the gas pipe 14, and finally discharged through the gas outlet pipe 3 connected to the third chamber 1-9.

[0195] Furthermore, the oil-gas separation device also includes: multiple sealing plates 22;

[0196] Multiple sealing plates 22 are disposed on the lower end face of the third partition 20, and together with the guide pipe 16, the third partition 20 and the separation tank 1, they form an oil collection chamber 21 located below the air outlet pipe 3;

[0197] The third partition 20 has an oil outlet hole that communicates with the oil collection chamber 21;

[0198] The side wall of the oil collecting chamber 21 is provided with a second oil outlet 1-6.

[0199] It should be noted that the gas separated by the oil separator 6 still contains a small amount of oil. Therefore, when the gas enters the outlet pipe 3 through the gas guide pipe 14 and the third chamber 1-9, the oil in the gas will accumulate under the action of gravity and eventually form liquid oil.

[0200] This application sets up multiple sealing plates 22 and places them on the lower end face of the third partition 20. The multiple sealing plates 22, together with the guide pipe 16, the third partition 20 and the separation tank 1, form an oil collecting chamber 21 located below the gas outlet pipe 3. The third partition 20 has an oil outlet hole communicating with the oil collecting chamber 21, and a second oil outlet 1-6 is opened on the side wall of the oil collecting chamber 21. This allows the liquid oil generated by the gas entering the gas outlet pipe 3 through the guide pipe 14 and the third chamber 1-9 to enter the oil collecting chamber 21 through the oil outlet hole and finally be discharged through the second oil outlet 1-6 opened on the side wall of the oil collecting chamber 21.

[0201] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil-gas separation device, characterized in that, include: Separator, air inlet pipe, air outlet pipe, oil return pipe, barrel cover and multiple oil fine separators; The bucket lid is detachably mounted on the top of the separation bucket, forming a sealed cavity; The oil separator is disposed inside or outside the sealed cavity, and the air inlet of the oil separator is connected to the sealed cavity; The air intake pipe is connected to the sealed cavity; The first end of the vent pipe is located outside the separation tank, and the second end of the vent pipe is connected to the vent ports of the plurality of oil-fine separators respectively. One end of the oil return pipe is located outside the separator and below the vent pipe, while the other end is connected to the second end of the vent pipe. The side wall of the separator is also provided with an oil outlet.

2. The oil-gas separation device according to claim 1, characterized in that, The oil separator is disposed in the sealed cavity, and the oil-gas separation device further includes: multiple plugs; The oil separator includes a cylindrical body and an annular filter screen; The annular filter screen is disposed inside the cylinder; The cylinder is provided with multiple air inlets; The lower end of the oil separator is the air outlet; The plug is located at the upper end of the oil separator.

3. The oil-gas separation device according to claim 2, characterized in that, The air intake pipe includes: a first connecting pipe and a second connecting pipe; The first connecting pipe is a trumpet-shaped structure with the opening facing downwards; The first end of the second connecting pipe protrudes from the side wall of the separation barrel to form an air inlet, and the second end is connected to the upper end of the first connecting pipe.

4. The oil-gas separation device according to claim 3, characterized in that, Also includes: Ring pipe; The annular tube is horizontally disposed within the sealed cavity, and the lower end of the first connecting tube passes through the annular tube. The annular pipe has multiple pipe sections; The air outlet of the oil separator is detachably connected to the pipe section; The second end of the vent pipe is connected to the upper part of the annular pipe; The return oil pipe is connected to the bottom of the annular pipe.

5. The oil-gas separation device according to claim 4, characterized in that, Also includes: Fixing plate; The fixing plate is horizontally arranged inside the separation barrel to form an upper chamber and a lower chamber. The fixing plate has multiple vent holes for connecting the upper chamber and the lower chamber. The fixing plate has through holes for installing the annular tube; The first connecting pipe is coaxially arranged with the annular pipe, and the outer wall of the first connecting pipe and the inner wall of the annular pipe are provided with a predetermined gap.

6. The oil-gas separation device according to claim 2, characterized in that, Also includes: expansion buckets; The lower end of the extension bucket is used to detachably connect to the separation bucket, and the upper end is used to detachably connect to the bucket lid; The upper end of the oil separator is connected to the air outlet of another oil separator.

7. The oil-gas separation device according to claim 2, characterized in that, Also includes: Multiple cover plates; The barrel cover has multiple disassembly ports that correspond one-to-one with the positions of the multiple oil separators; The cover plate is detachably mounted at the disassembly port.

8. The oil-gas separation device according to claim 1, characterized in that, The oil separator is disposed outside the sealed cavity; The barrel cover has multiple mounting ports for the detachable installation of the oil separator; The oil separator includes a cylindrical body and an annular filter screen; The annular filter screen is disposed inside the cylinder; The top of the cylinder is a closed end, and the bottom of the cylinder and the annular filter form an air inlet that communicates with the sealed cavity; The lower end of the annular filter is connected to the second end of the air outlet pipe.

9. The oil-gas separation device according to claim 8, characterized in that, Also includes: Ring pipe; The annular tube is disposed within the sealed cavity, and the annular tube has multiple tube sections; The air outlet of the oil separator is connected to the pipe section; The second end of the vent pipe is connected to the bottom of the annular pipe.

10. The oil-gas separation device according to claim 8, characterized in that, Also includes: Annular spoiler and mounting plate; The mounting plate is disposed in the sealed cavity, forming an upper chamber and a lower chamber; The annular spoiler is vertically disposed in the lower chamber, and the upper end of the annular spoiler is connected to the upper chamber; The air outlet of the air inlet pipe is located between the annular baffle and the separation barrel, and the air outlet of the air inlet pipe is set at a preset angle to the outer wall of the annular baffle.

11. An oil-gas separation device, characterized in that, include: Separation tank, air inlet pipe, air outlet pipe, oil return pipe, tank cover, air guide pipe, oil guide pipe and multiple oil fine separators; The barrel cover is detachably mounted on the top of the separation barrel to form a sealed cavity. The barrel cover has several mounting ports for installing the oil separator. The air intake pipe is connected to the sealed cavity; Both the air guide pipe and the oil guide pipe are disposed in the sealed cavity, and the first end of the air guide pipe passes through the mounting port and communicates with the air outlet of the oil separator. The first end of the oil guide pipe passes through the mounting port and is connected to the air outlet of the oil separator, wherein the height of the first end of the oil guide pipe is lower than the height of the first end of the air guide pipe; One end of the return oil pipe is located outside the separation tank, and the other end is connected to the second end of the guide oil pipe; The first end of the air outlet pipe is located outside the separation barrel, and the second end is connected to the second end of the air guide pipe. The side wall of the separator is also provided with an oil outlet.

12. The oil-gas separation device according to claim 11, characterized in that, The oil separator includes a cylindrical body and an annular filter screen; The annular filter screen is disposed inside the cylinder; The top of the cylinder is a closed end, and the bottom of the cylinder and the annular filter form an air inlet that communicates with the sealed cavity; The lower end of the annular filter screen is the air outlet of the oil separator.

13. The oil-gas separation device according to claim 12, characterized in that, The air guide tube is disposed inside the oil guide tube, and the first end of the air guide tube extends out from the first end of the oil guide tube.

14. The oil-gas separation device according to claim 13, characterized in that, Also includes: The flow guide pipe, connecting pipe, first baffle, second baffle, and third baffle; The first partition, the second partition, and the third partition are arranged sequentially from top to bottom in the sealed cavity to form a first chamber, a second chamber, a third chamber, and a fourth chamber; The first partition and the second partition are provided with a first connecting hole and a second connecting hole at corresponding locations; The connecting pipe is disposed between the first partition and the second partition, and one end of the connecting pipe is in close contact with the first communicating hole, and the other end is in close contact with the second communicating hole; The guide tube is disposed in the fourth chamber, and the upper end of the guide tube passes through the third partition and is in close contact with the second connecting hole; The second end of the oil guide pipe passes through the first partition and communicates with the second chamber; The second end of the air guide tube extends from the second end of the oil guide tube and passes through the second partition to communicate with the third chamber; The second end of the air outlet pipe is connected to the third chamber; The outer wall of the second chamber has a first oil outlet that communicates with the oil outlet pipe.

15. The oil-gas separation device according to claim 14, characterized in that, Also includes: Multiple sealing plates; Multiple sealing plates are disposed on the lower end face of the third partition, and together with the guide pipe, the third partition, and the separation barrel, form an oil collection chamber located below the air outlet pipe; The third partition plate has an oil outlet hole that communicates with the oil collection chamber; The oil collecting chamber has a second oil outlet on its side wall.

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