Gas outlet structure of oil-gas separator

Abstract

The gas outlet structure of the oil-gas separator comprises a shell and a gas outlet pipe, the gas outlet pipe comprises an inner pipe and an outer pipe connected with the inner pipe in an inserted mode, the shell is provided with an installation hole used for being connected with the inner pipe in an inserted mode, the outer pipe is provided with a pressing plate, the pressing plate abuts against a port of the installation hole, and a sealing structure is arranged at the connecting position of the inner pipe and the outer pipe. And a sealing structure is arranged at the joint of the pressing plate and the mounting hole. The air outlet structure has the beneficial effects that by arranging the two sealing structures matched with each other, the sealing performance of the air outlet structure can be remarkably improved; a plurality of inclined annular bulges on the inner pipe can prevent oil in the shell from entering the inner pipe; the installation efficiency of the inner pipe can be improved through the fixed inserting point positions of the installation holes and the inner pipe.

Description

Technical Field

[0001] This application relates to the field of oil-gas separation technology, and in particular to an oil-gas separator outlet structure. Background Technology

[0002] With increasingly stringent emission standards, higher requirements are being placed on the effective separation rate of oil-gas separators. The separation efficiency of an oil-gas separator is related to the structure of its outlet pipe. Traditional outlet pipes are typically smooth-walled tubes. Under gravity, the oil separated by the separator slides from the inner wall of the casing onto the partition plate. Some of this oil drips onto the outer wall of the outlet pipe and, due to machine vibration, flows into the outlet pipe, polluting the internal gas. Therefore, there is an urgent need for an outlet pipe that can effectively block the oil from flowing onto it.

[0003] Currently, most air outlet pipes and housings use a single seal, with a sealing ring installed at the connection point. However, when the air pressure inside the housing is high, it can impact the sealing ring, causing some gas to leak out and pollute the environment. Furthermore, some oil from the machine may seep onto the sealing ring, which over time can severely compromise its sealing performance. Utility Model Content

[0004] One objective of this application is to provide an oil-gas separator outlet structure that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: an oil-gas separator outlet structure, comprising a housing and an outlet pipe, characterized in that the outlet pipe includes an inner pipe and an outer pipe connected to the inner pipe; the housing is provided with an installation hole for installing the inner pipe; a pressure plate is provided on the outer pipe, the pressure plate abutting against the port of the installation hole; a sealing structure is provided at the connection between the inner pipe and the outer pipe, and a sealing structure is provided at the connection between the pressure plate and the installation hole. This application allows for the separate disassembly of the outer pipe, enabling replacement of only the outer pipe when it is damaged, thus reducing maintenance costs; furthermore, the sealing performance of the outlet structure can be further improved through the sealing cooperation at two points.

[0006] Preferably, the end face of the mounting hole is provided with an annular groove, and a first sealing ring is installed in the annular groove; a pressure ring connected to the housing is installed on the pressure plate, and the pressure ring squeezes the pressure plate so that the pressure plate squeezes the first sealing ring tightly against the annular groove to form a seal. With this configuration, by changing the relative position of the pressure ring and the housing, the pressure ring can be forced to squeeze the pressure plate, thereby allowing the pressure plate to squeeze the first sealing ring, thus forming a seal between the mounting hole, the outer tube, and the inner tube, preventing gas leakage from the joint.

[0007] Preferably, the outer tube has a mounting groove on its sidewall, with the pressure plate extending outward from the side of the mounting groove away from the outer tube. The outer diameter of the outer tube is smaller than the inner diameter of the inner tube, and the width of the mounting groove is greater than the thickness of the upper sidewall of the inner tube, so that the outer tube can be inserted into the inner tube, and the inner tube extends into the mounting groove. This arrangement increases the stability of the insertion between the inner and outer tubes, and the mounting groove can also buffer the gas in the gap, preventing the gas from directly impacting the first sealing ring.

[0008] Preferably, a second sealing ring is installed between the outer wall of the outer tube and the inner wall of the inner tube. The outer wall of the outer tube presses the second sealing ring tightly against the inner wall of the inner tube, so that the second sealing ring radially seals between the inner tube and the outer tube. This arrangement can further improve the sealing performance of the gas outlet structure, prevent gas from entering the first sealing ring through the connection between the inner and outer tubes, and effectively reduce the sealing pressure of the first sealing ring.

[0009] Preferably, the inner wall of the mounting hole is provided with a step, and the step and the outer wall of the inner tube are provided with mutually cooperating limiting structures. This configuration can limit the insertion depth of the inner tube in the mounting hole, so the user does not need to judge the position by intuition. When the inner tube abuts against the step, it is the correct installation point of the inner tube. In addition, the limiting fit can also prevent the inner tube from rotating in the mounting hole.

[0010] Preferably, the inner tube is further provided with an annular baffle, which is located near the step; a partition groove is provided between the annular baffle and the port of the inner tube. This arrangement can form a curved seal between the annular baffle and the step, preventing oil from the housing from entering the first sealing ring and affecting the sealing effect; the partition groove can be used to collect a small amount of oil that accidentally leaks out of the annular baffle.

[0011] Preferably, a separation component is installed inside the housing, and an air inlet is provided on the inner tube, with the air inlet located close to the separation component. This configuration allows the separated gas inside the housing to directly enter the inner tube under the pressure of the overhead airflow, improving the gas output efficiency of the oil-gas separator.

[0012] Preferably, the outer wall of the inner tube is provided with at least one annular protrusion. This design allows the annular protrusion to block oil from sliding down the outer wall of the inner tube, preventing it from directly entering the air inlet and causing contamination.

[0013] Preferably, there are multiple annular protrusions, which are obliquely arranged, and the end face of each annular protrusion is coaxial with the rotation axis of the separation component. This arrangement ensures that oil that the separation component fails to throw onto the housing can be evenly distributed between adjacent annular protrusions under centrifugal force.

[0014] Preferably, the inner wall of the inner tube is provided with multiple reinforcing ribs. This arrangement can enhance the structural strength of the inner tube and prevent it from being bent during transportation.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] The vent pipe is composed of an inner pipe and an outer pipe connected together. When the outer pipe is damaged, the maintenance cost of the vent pipe can be reduced by replacing the outer pipe separately. Sealing rings are installed at the connection between the shell and the outer pipe, and at the connection between the outer pipe and the inner pipe. Through the two-point sealing structure, the sealing performance of the vent structure can be significantly improved.

[0017] Multiple oblique annular protrusions are provided on the outer wall of the inner tube to prevent oil on the inner wall of the housing from crawling to the opening of the inner tube and causing contamination. In addition, the mounting hole and the inner tube can be matched to provide a fixed insertion position for the inner tube, making the installation of the inner tube more efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application.

[0019] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle.

[0020] Figure 3 This is a schematic diagram of the shell structure in this application.

[0021] Figure 4 This is a schematic diagram of the inner tube in this application.

[0022] Figure 5 This is a schematic diagram of the structure of the outer tube in this application.

[0023] In the diagram: 1. Housing; 11. Mounting hole; 100. First sealing ring; 101. Second sealing ring; 110. Annular groove; 111. Step; 112. Limiting groove; 2. Inner tube; 21. Annular baffle; 22. Limiting block; 23. Separating groove; 24. Annular protrusion; 25. Reinforcing rib; 200. Pressure ring; 3. Outer tube; 31. Mounting groove; 32. Pressure plate; 4. Separation assembly. Detailed Implementation

[0024] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0026] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0027] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0028] One aspect of this application provides an oil-gas separator outlet structure, such as... Figure 1 As shown, one preferred embodiment includes a housing 1 and an exhaust pipe, the exhaust pipe comprising an inner pipe 2 and an outer pipe 3; wherein the inner pipe 2 is installed inside the housing 1, and the outer pipe 3 is installed outside the housing 1, the inner pipe 2 and the outer pipe 3 are connected to each other to allow the housing 1 to communicate with the outside, and the gas inside the housing 1 can be discharged to the outside through the exhaust pipe. The housing 1 is provided with a mounting hole 11 for inserting the inner pipe 2, and the outer pipe 3 is provided with a pressure plate 32 for pressing the mounting hole 11. In order to increase the sealing between the exhaust pipe and the housing 1, sealing structures are provided at the connection between the inner pipe 2 and the outer pipe 3, and at the connection between the pressure plate 32 and the mounting hole.

[0029] It should be noted that since the vent pipe is composed of an inner pipe 2 and an outer pipe 3 connected together, the outer pipe 3 can be disassembled separately. When the outer pipe 3 is damaged, the maintenance personnel can disassemble and replace the outer pipe 3 separately, thereby reducing the maintenance cost of the vent pipe.

[0030] Furthermore, such as Figure 2As shown, an annular groove 110 is provided on the end face of the mounting hole 11. A first sealing ring 100 is installed in the annular groove 110. The first sealing ring 100 is pressed tightly against the annular groove 110 by the pressure plate 32 to achieve a seal. In order for the pressure plate 32 to continuously press the first sealing ring 100, a pressure ring 200 is installed on the pressure plate 32. The end face of the pressure ring 200 is in contact with the pressure plate 32. The pressure ring 200 is provided with fasteners or buckles that can be fixedly connected to the housing 1, thereby forcing the pressure ring 200 to drive the pressure plate 32 to continuously press the first sealing ring 100, so that the mounting hole 11, the outer tube 3 and the inner tube 2 are sealed together.

[0031] It should be noted that the main function of the pressure ring 200 in this application is to compress the pressure plate 32. If the number of parts is to be reduced, mating screw holes and fasteners can be provided on the end faces of the pressure plate 32 and the mounting hole 11 for fixing.

[0032] As a supplement, in order to prevent gas from leaking from the annular groove 110, the width of the end face of the pressure plate 32 should be greater than the width of the annular groove 110 so that the pressure plate 32 can completely cover the annular groove 110.

[0033] Specifically, such as Figure 2 As shown, an installation groove 31 is provided on the side wall of the outer tube 3. The opening of the installation groove 31 faces the inner tube 2 and is coaxial with the opening of the outer tube 3. The pressure plate 32 extends outward from one side wall of the installation groove 31 away from the outer tube 3. The outer diameter of the outer tube 3 is smaller than the inner diameter of the inner tube 2, and the width of the installation groove 31 is greater than the thickness of the side wall of the inner tube 2. During installation, inserting the outer tube 3 into the inner tube 2 will simultaneously insert the inner tube 2 into the installation groove 31, thereby increasing the stability of the connection between the inner tube 2 and the outer tube 3.

[0034] Understandably, some of the gas in the inner tube 2 may be rapidly sprayed from the joint between the inner tube 2 and the outer tube 3 towards the first sealing ring 100 under the action of air pressure, which will damage the first sealing ring 100 over time; however, in this application, the gas can directly impact the mounting groove 31 after passing through the joint between the inner tube 2 and the outer tube 3, thereby reducing the gas flow rate and reducing the impact force of the gas on the first sealing ring 100.

[0035] To further improve the airtightness of the exhaust structure, in this embodiment, such as Figure 2 As shown, a second sealing ring 101 is installed between the outer wall of the outer tube 3 and the inner wall of the inner tube 2. When the outer tube 3 is inserted into the inner tube 2, the outer wall of the outer tube 3 presses the second sealing ring 101 tightly against the inner wall of the inner tube 2, so that the second sealing ring 101 is radially sealed between the inner tube 2 and the outer tube 3.

[0036] It is understandable that the second sealing ring 101 has two main functions. First, it can prevent gas from flowing to the first sealing ring 100 through the joint between the inner tube 2 and the outer tube 3. Second, it can share the pressure of the first sealing ring 100, as some of the gas at the joint between the inner tube 2 and the mounting hole 11 will enter the mounting groove 31 and be blocked by the second sealing ring 101.

[0037] It should be noted that the first sealing ring 100 and the second sealing ring 101 in this application are made of rubber, soft plastic and other materials, which have good elasticity, anti-slip and wear resistance.

[0038] In this embodiment, as Figure 2 and Figure 4 As shown, the inner wall of the mounting hole 11 is provided with a step 111, and the step 111 and the outer wall of the inner tube 2 are provided with mutually cooperating limiting structures. The limiting structures include a limiting groove 112 and a limiting block 22. The step 111 can limit the insertion depth of the inner tube 2. The user does not need to judge the position intuitively. When the limiting block 22 is inserted into the limiting groove 112, it is the correct installation point. In addition, the limiting cooperation can also prevent the inner tube 2 from rotating in the mounting hole 11.

[0039] Furthermore, such as Figure 2 and Figure 4 As shown, an annular baffle 21 is provided on the side wall of the inner tube 2. When the inner tube 2 is inserted into the mounting hole 11, the annular baffle 21 is close to the step 111. A partition groove 23 is provided between the annular baffle 21 and the port of the inner tube 2. The annular baffle 21 can cooperate with the step 111 to form a curved seal. When the air pressure inside the curved seal is high, it can effectively prevent oil on the inner wall of the housing 1 from entering the curved seal. The partition groove 23 can store oil that is accidentally leaked, preventing oil from entering the first sealing ring 100 and the second sealing ring 101 with the airflow, thus affecting the airtightness of the air outlet structure.

[0040] In this embodiment, as Figure 1 As shown, a separation component 4 is installed inside the housing 1, and an air inlet is provided on the inner tube 2. The air inlet is close to the separation component 4 to ensure that the separated gas can quickly enter the inner tube 2 under the compression of the airflow above, thereby improving the gas output efficiency of the oil-gas separator.

[0041] It should be understood that the oil separated in the oil-gas separator first adheres to the inner wall of the housing 1, and then slides down to the lower oil outlet under the action of gravity; when the oil slides down the housing 1, some of the oil located above the inner tube 2 may slide down to the outer wall of the inner tube 2, and then flow to the air inlet, causing pollution.

[0042] In view of the above situation, in some embodiments of this application, such as Figure 1 and Figure 4As shown, multiple annular protrusions 24 are provided on the outer wall of the inner tube 2. When oil on the inner wall of the housing 1 slides onto the inner tube 2, the annular protrusions 24 can block the oil, preventing the oil from flowing from the outer wall of the inner tube 2 to the air inlet. The blocked oil will then detach from the inner tube 2 under the action of gravity.

[0043] It is understandable that some oil droplets may splash onto the inner tube 2 during the rotation of the separation component 4. Therefore, the annular protrusion 24 can be set at an angle, and the end face of the annular protrusion 24 is coaxial with the rotation axis of the separation component 4 to ensure that the oil splashed on the separation component 4 can be evenly thrown between the adjacent annular protrusions 24.

[0044] In this embodiment, as Figure 4 As shown, multiple reinforcing ribs 25 are provided on the inner wall of the inner tube 2 to enhance the structural strength of the inner tube 2 and prevent the inner tube 2 from bending under internal pressure during transportation.

[0045] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An oil-gas separator outlet structure, comprising a housing (1) and an outlet pipe, characterized in that, The vent pipe includes an inner pipe (2) and an outer pipe (3) connected to the inner pipe (2). The housing (1) is provided with a mounting hole (11) for installing the inner pipe (2). A pressure plate (32) is provided on the outer pipe (3), and the pressure plate (32) abuts against the port of the mounting hole (11). A sealing structure is provided at the connection between the inner pipe (2) and the outer pipe (3), and a sealing structure is provided at the connection between the pressure plate (32) and the mounting hole (11).

2. The gas outlet structure of the oil-gas separator as described in claim 1, characterized in that, The end face of the mounting hole (11) is provided with an annular groove (110), and a first sealing ring (100) is installed in the annular groove (110); a pressure ring (200) connected to the housing is installed on the pressure plate (32), and the pressure ring (200) squeezes the pressure plate (32) so that the pressure plate (32) squeezes the first sealing ring (100) tightly against the annular groove (110) to form a seal.

3. The gas outlet structure of the oil-gas separator as described in claim 1, characterized in that, The outer tube (3) has a mounting groove (31) on its side wall. The mounting groove (31) extends outward from the side away from the outer tube (3) to form the pressure plate (32). The outer diameter of the outer tube (3) is smaller than the inner diameter of the inner tube (2). The width of the mounting groove (31) is greater than the thickness of the upper side wall of the inner tube (2) so that the outer tube (3) can be inserted into the inner tube (2) and the inner tube (2) can extend into the mounting groove (31).

4. The gas outlet structure of the oil-gas separator as described in claim 3, characterized in that, A second sealing ring (101) is installed between the outer wall of the outer tube (3) and the inner wall of the inner tube (2). The outer wall of the outer tube (3) presses the second sealing ring (101) tightly against the inner wall of the inner tube (2) so that the second sealing ring (101) is radially sealed between the inner tube (2) and the outer tube (3).

5. The gas outlet structure of the oil-gas separator as described in claim 1, characterized in that, The inner wall of the mounting hole (11) is provided with a step (111), and the step (111) and the outer wall of the inner tube (2) are provided with mutually cooperating limiting structures.

6. The gas outlet structure of the oil-gas separator as described in claim 5, characterized in that, An annular baffle (21) is also provided on the inner tube (2), and the annular baffle (21) is close to the step (111); a partition groove (23) is provided between the annular baffle (21) and the port of the inner tube (2).

7. The gas outlet structure of the oil-gas separator as described in claim 1, characterized in that, A separation component (4) is installed inside the housing (1), and an air inlet is provided on the inner tube (2), which is close to the separation component (4).

8. The gas outlet structure of the oil-gas separator as described in claim 7, characterized in that, The outer wall of the inner tube (2) is provided with at least one annular protrusion (24).

9. The gas outlet structure of the oil-gas separator as described in claim 8, characterized in that, The number of the annular protrusions (24) is multiple, the annular protrusions (24) are obliquely arranged, and the end face of the annular protrusions (24) is coaxial with the rotation axis of the separation component (4).

10. The gas outlet structure of the oil-gas separator as described in claim 1, characterized in that, The inner wall of the inner tube (2) is provided with multiple reinforcing ribs (25).

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