Oil-gas separator

Abstract

The utility model provides an oil-gas separator which comprises a shell, a first oil-gas separator and a second oil-gas separator, the shell comprises a first shell body and a second shell body, a first bearing is arranged in the first shell body, and a base and a second bearing are arranged in the second shell body; the oil-gas separation device is arranged in the shell, the oil-gas separation device comprises a rotating shaft and a rotor arranged on the rotating shaft in a sleeving mode, and the rotating shaft is arranged in the first bearing and the second bearing in a penetrating mode; and the sealing device is located on the side, away from the rotor, of the second bearing, the sealing device comprises a turbine, the turbine is arranged on the rotating shaft in a sleeving mode, the first end of the turbine is provided with a protruding part protruding towards the second bearing, the protruding part is arranged close to the edge of the turbine, and blades are arranged on the protruding part. The oil-gas separator provided by the utility model is good in sealing performance, and separated liquid oil is high in flowing-out speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fluid purification, specifically relates to a oil gas separator. BACKGROUND

[0002] The oil gas separator is a kind of equipment for separating gas-liquid mixture from each other.The existing oil gas separator includes upper shell, lower shell, upper bearing located in the upper shell and lower bearing located in the lower shell and the structure, in some cases, lower bearing lower gas pressure is slightly higher than lower bearing upper gas pressure, at this time, lower bearing lower gas will leak to upper part, since lower bearing lower gas contains oil mist, after leaking to lower bearing upper part, it will be directly discharged from the gas outlet of oil gas separator, resulting in incomplete separation of liquid oil and gas, affect the separation efficiency of oil gas separator, when encountering this problem, usually, sealing structure is added between lower bearing upper part and lower part to prevent gas from leaking from lower bearing lower part to lower bearing upper part, but this kind of practice will also be not conducive to the flow of liquid oil separated from lower bearing upper part to lower bearing lower part. SUMMARY

[0003] In order to overcome the defects in the prior art, the utility model embodiment provides an oil gas separator, which has good sealing performance, and the separated liquid oil flows out quickly.

[0004] To achieve the above object, the utility model adopts the technical scheme that:

[0005] The utility model discloses an oil gas separator, which comprises:

[0006] The shell comprises a first shell and a second shell, the first shell is provided with a first bearing, and the second shell is provided with a base and a second bearing;

[0007] The oil gas separation device is arranged in the shell, and comprises a rotating shaft and a rotor sleeved on the rotating shaft, the rotating shaft penetrates through the first bearing and the second bearing;

[0008] The sealing device is located on the side, away from the rotor, of the second bearing, and comprises a turbine, the turbine is sleeved on the rotating shaft, the first end of the turbine has a protruding part protruding towards the second bearing, the protruding part is arranged close to the edge of the turbine, and the protruding part is provided with blades.

[0009] The technical scheme is characterized in that a protrusion is arranged at the first end of the turbine, a sealing structure is formed on the side of the second bearing away from the rotor, the gas-liquid separation of the oil-gas separator is effectively sealed, and a blade is arranged on the protrusion, a centrifugal force is generated when the blade rotates, under the action of the centrifugal force, the gas flows to the outside of the blade, a negative pressure of the gas is generated at one end of the sealing device with the blade, an attraction force is generated on the liquid oil flowing above the turbine, the flow of the liquid oil to the turbine is accelerated, and the liquid oil flows out of the sealing device, a positive pressure of the gas is generated at the other end of the sealing device without the blade, the gas below the turbine is prevented from flowing above the turbine, and the sealing performance of the sealing device is enhanced.

[0010] Further, the base is provided with an opening, the opening extends towards the turbine to form an extension, the second bearing is fixed in the extension, an annular groove is formed on the end face of the extension close to the turbine, the protrusion is located in the annular groove, and a gap is formed between the base and the turbine.

[0011] The protrusion and the end face of the first end of the turbine and the annular groove of the extension form a labyrinth sealing structure, so that the gas below the second bearing is prevented from flowing to the upper part of the second bearing, the gap between the extension and the turbine forms a flow channel between the base and the turbine, the liquid oil separated by the oil-gas separation device is sprayed to the inner wall of the shell of the oil-gas separator under the action of the centrifugal force, and flows downward along the inner wall of the shell, flows through the opening, and flows through the gap of the second bearing and the gap between the base and the turbine, so as to flow out of the oil-gas separator.

[0012] Further, the protrusion is annular, and the number of the blades is multiple, and the multiple blades are arranged at intervals along the circumference of the protrusion. The number of the blades is set based on the geometric size of the sealing device, the gas amount and the pressure and other influencing factors, so that the blades form a relatively strong gas pressure when rotating, the attraction force on the liquid oil is increased, and the flow rate of the liquid oil is improved.

[0013] Further, the number of the blades is 12-36. When the number of the blades is 12-36, the flow rate of the liquid oil and the sealing performance of the sealing device can be optimized.

[0014] Further, the thickness of the blade is set such that a groove is formed between any two interval blades and at least part of the protrusion between the two interval blades. When the blade rotates, the gas flows through the groove, the depth of the groove affects the gas amount, too small gas amount leads to too small gas pressure, and too large gas amount reduces the sealing performance of the sealing device.

[0015] Further, the thickness of the blade is 0.1-0.5mm. The thickness direction of the blade is the direction along the turbine axis, i.e. the groove depth formed. When the groove depth is lower than 0.1mm, the gas amount passing through is too small, and when the groove depth is higher than 0.5mm, the sealing effect of the sealing device is reduced.

[0016] Further, the distance between any two spaced blades is 2-4 times the width of the blade. The blade can be provided in various shapes, and the width of the blade is adjusted according to the number of blades and the total length of the protruding part to avoid affecting the gas amount passing through the groove, thereby affecting the sealing performance and the flow speed of the liquid oil.

[0017] Further, the turbine is internally provided with an annular part sleeved on the rotating shaft, the height of the annular part is higher than the height of the protruding part, and the annular part abuts against the second bearing. Thus, when the liquid oil flows to the sealing device, it can flow out of the sealing device along the preset flow channel.

[0018] Further, the turbine is provided with a plurality of turbine blades arranged at intervals along the circumferential side thereof.

[0019] Further, the oil-gas separator further comprises a nozzle, when the nozzle sprays oil to the turbine, the turbine rotates to rotate the rotating shaft.

[0020] Thanks to the use of the above technical scheme, the present application has the following advantages compared with the prior art:

[0021] The present application provides the blade on the protruding part of the sealing device. Firstly, the blade generates centrifugal force when rotating, and under the action of the centrifugal force, the gas flows to the outside of the blade. The end of the sealing device with the blade generates gas negative pressure, which generates suction force on the liquid oil flowing above the turbine, so as to accelerate the flow of the liquid oil to the turbine and out of the sealing device. Secondly, the other end without the blade generates gas positive pressure, which prevents the gas below the turbine from flowing to the upper part of the turbine, thereby enhancing the sealing performance of the sealing device.

[0022] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1It is sectional view of oil-gas separator provided by the embodiment of the utility model,

[0025] Figure 2 It is structure diagram of sealing device provided by the embodiment of the utility model,

[0026] Figure 3 It is partial enlarged view of sealing device provided by the embodiment of the utility model,

[0027] Figure 4 It is internal structure diagram of oil-gas separator provided by the embodiment of the utility model,

[0028] Figure 5 It is structure diagram of oil-gas separator provided by the embodiment of the utility model.

[0029] The above figure's reference numerals: 1, first shell, 2, second shell, 3, first bearing, 4, second bearing, 5, base, 6, rotating shaft, 7, rotor, 8, turbine, 9, protruding part, 10, blade, 11, extension, 12, annular groove, 13, recess, 14, turbine blade, 15, annular part, 16, nozzle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. In addition, the drawings of the utility model are only simple schematic illustrations, not the depiction of actual size, and the prior declaration is made.

[0031] In the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "forward", "backward", "between", "close to", "far away" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. It also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be directly connected, or indirectly connected. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] It should be understood that although the terms "first", "second", "third" and the like can be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein can include any one or more combinations of the associated listed items.

[0033] Referring to Figures 1-5 The embodiment of the present application provides an oil-gas separator, comprising:

[0034] A housing, the housing comprises a first housing 1 and a second housing 2, the first housing 1 is located above the second housing 2 and connected with the second housing 2 to form an oil-gas separation space, a first bearing 3 is arranged in the first housing 1, and a second bearing 4 and a base 5 are arranged in the second housing 2.

[0035] As shown in Figure 4 and Figure 5 , the first housing 1 is provided with an air inlet pipe for the gas to be separated to enter and an air outlet pipe for the separated gas to flow out, the second housing 2 is provided with an oil outlet pipe for the separated liquid oil to flow out, wherein the air inlet pipe is arranged at the top of the first housing 1, the air outlet pipe is arranged at the side of the first housing 1 and close to the second housing 2, and the oil outlet pipe is arranged at the bottom of the second housing 2, the air outlet pipe has a gas collecting port inside the first housing 1, the gas collecting port is arranged below the oil-gas separation device and faces the oil-gas separation device, so as to facilitate the collection of the separated gas.

[0036] An oil-gas separation device is arranged in the housing, the oil-gas separation device comprises a rotating shaft 6 and a rotor 7 sleeved on the rotating shaft 6, both ends of the rotating shaft 6 pass through the first bearing 3 and the second bearing 4, and the rotating shaft 6 drives the rotor 7 to rotate when rotating, so as to separate oil and gas.

[0037] A sealing device is located on the side of the second bearing 4 away from the rotor 7, the sealing device comprises a turbine 8, the turbine 8 is sleeved on the rotating shaft 6, the first end of the turbine 8 has a protruding part 9 protruding towards the second bearing 4, the protruding part 9 is arranged close to the edge of the turbine 8, and the protruding part 9 is provided with a blade 10. Wherein, the first end of the turbine 8 is an end face opposite to the second bearing 4.

[0038] Through the above structure, the sealing device of the oil-gas separator provided by the present application can not only seal the upper part and the lower part of the second bearing 4, avoiding the gas in the lower part of the second bearing 4 flowing to the upper part, but also can accelerate the speed of the liquid oil flowing out of the sealing device, thereby improving the efficiency of oil-gas separation.

[0039] Specifically, as shown in Figure 1 and Figure 3As shown, the base 5 is provided with an opening for the separated liquid oil to flow out, the opening extends towards the turbine 8 to form an extension 11, the second bearing 4 is fixed in the extension 11, the extension 11 is provided with an annular groove 12 formed from the end surface of the turbine 8 to the direction away from the turbine 8, the protruding part 9 is located in the annular groove 12, so as to form a labyrinth seal structure between the protruding part 9, the end surface of the first end of the turbine 8 and the base 5, thereby avoiding the gas in the lower part of the second bearing 4 to flow to the upper part of the second bearing 4, the base 5 and the turbine 8 have a gap, so as to form a flow channel between the base 5, the opening of the base 5 and the end surface of the first end of the turbine 8, thereby making the separated liquid oil flow out along the flow channel and out of the oil outlet pipe. Specifically, the separated liquid oil is thrown to the inner wall of the shell, flows along the inner wall of the shell to the base 5, and then flows to the gap of the second bearing 4 through the opening of the base 5, and then flows out from the gap between the end surface of the first end of the turbine 8 and the extension 11.

[0040] In order to accelerate the speed of the liquid oil flowing out of the sealing device from the upper part of the second bearing 4, as shown in the figure, Figure 2 As shown, the protruding part 9 is in the shape of a ring, and the protruding part 9 is provided with a plurality of blades 10, the plurality of blades 10 are arranged at intervals along the circumferential direction of the protruding part 9, when the blades 10 rotate with the turbine 8, a negative pressure is generated to generate suction force on the liquid oil in the upper part of the second bearing 4, so as to make the liquid oil flow to the first end of the turbine 8 and flow out of the sealing device along the gap between the end surface of the first end of the turbine 8 and the extension 11.

[0041] In a possible embodiment, the blades 10 are arranged in an inclined manner on the protruding part 9, and the number of blades is 12-36, so as to form a relatively strong gas pressure when the blades rotate.

[0042] The blades 10 can be provided in various shapes, and need to have a certain width and thickness, considering the height of the protruding part 9 and the gas pressure formed by the blades 10, the thickness of the blades 10 is set to form a groove 13 with a predetermined depth between any two spaced blades 10 and at least part of the protruding part 9 between the two spaced blades 10, the depth of the groove 13 is the thickness of the blades 10 in the axial direction of the turbine 8, and the width of the groove 13 is the distance between the two spaced blades 10.

[0043] In the embodiment of the present application, the height of the protruding part 9 is set to be 1.5-2mm, preferably, the thickness of the blades 10, that is, the depth of the groove 13 is 0.1-0.5mm, at this time, the gas amount passing through the groove 13 and the gas pressure formed when the blades 10 rotate can make the sealing performance of the sealing device and the speed of the liquid oil flowing out reach the optimum.

[0044] The width of the blades 10 can be set according to actual conditions, wherein the distance between any two spaced blades 10 is 2-4 times the width of the blades 10.

[0045] In one possible embodiment, the inside of the turbine 8 is provided with an annular portion 15 which is sleeved on the rotating shaft 6, the height of the annular portion 15 is higher than the height of the convex portion 9, and the annular portion 15 is in abutment with the second bearing 4, so that when the liquid oil flows to the sealing device, it can flow out of the sealing device along the preset flow channel.

[0046] As shown in Figure 2 , Figure 4 and Figure 5 , the turbine 8 has a plurality of turbine blades 14 which are arranged at intervals along the circumferential side of the turbine 8, and the oil-gas separator comprises a nozzle 16, when the nozzle 16 sprays oil to the turbine 8, the turbine 8 rotates to rotate the rotating shaft 6.

[0047] The principle and implementation mode of the present application are described in the specific embodiments, and the above embodiment is only used to help understand the method and core idea of the present application; meanwhile, for the general skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. An oil and gas separator characterized by, The utility model relates to an oil-gas separator, comprising: a housing, the housing comprising a first housing and a second housing, the first housing being provided with a first bearing, and the second housing being provided with a base and a second bearing; an oil-gas separation device, the oil-gas separation device being provided in the housing, the oil-gas separation device comprising a rotating shaft and a rotor sleeved on the rotating shaft, the rotating shaft being provided in the first bearing and the second bearing; a sealing device, the sealing device being located on a side of the second bearing away from the rotor, the sealing device comprising a turbine, the turbine being sleeved on the rotating shaft, the turbine having a protruding portion protruding towards the second bearing at a first end of the turbine, the protruding portion being provided close to an edge of the turbine, and the protruding portion being provided with blades.

2. A gas-oil separator according to claim 1, characterized in that The base is provided with an opening, the opening extending towards the turbine to form an extension portion, the second bearing being fixed in the extension portion, an annular groove being formed on an end face of the extension portion close to the turbine, the protruding portion being located in the annular groove, and a gap being formed between the base and the turbine.

3. A gas-oil separator according to claim 1, characterized in that The protruding portion is annular, and the number of the blades is multiple, the multiple blades being arranged in a circumferential direction of the protruding portion.

4. A gas-oil separator according to claim 3, characterized in that The number of the blades is 12-36.

5. A gas-oil separator according to claim 1, characterized in that The thickness of the blades is set such that a groove is formed between any two spaced blades and at least part of the protruding portion between the two spaced blades.

6. A gas-oil separator according to claim 5, characterized in that The thickness of the blades is 0.1-0.5 mm.

7. A gas-oil separator according to claim 5, characterized in that The distance between the any two spaced blades is 2-4 times the width of the blades.

8. A gas-oil separator according to claim 1, characterized in that The turbine is provided with an annular portion sleeved on the rotating shaft in the turbine, the height of the annular portion being higher than the height of the protruding portion, and the annular portion abutting against the second bearing.

9. A gas-oil separator according to claim 1, characterized in that The turbine is provided with multiple turbine blades arranged in a circumferential direction of the turbine.

10. The oil and gas separator of claim 1, wherein, The oil-gas separator further comprises a nozzle, when the nozzle sprays oil towards the turbine, the turbine rotates to rotate the rotating shaft.

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