CN112459863A - High-efficient oil-gas separation device - Google Patents
High-efficient oil-gas separation device Download PDFInfo
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- CN112459863A CN112459863A CN202011464290.7A CN202011464290A CN112459863A CN 112459863 A CN112459863 A CN 112459863A CN 202011464290 A CN202011464290 A CN 202011464290A CN 112459863 A CN112459863 A CN 112459863A
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- 238000000926 separation method Methods 0.000 title claims abstract description 150
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- 239000003595 mist Substances 0.000 claims description 7
- 239000003921 oil Substances 0.000 description 105
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M13/0405—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in covering members apertures, e.g. caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
- F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
- F01M2013/0072—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0411—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil using cooling means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
- F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a high-efficient oil-gas separation device, include: the oil-gas mixed gas enters from the gas inlet, is partially cooled into liquid through the collision with the boss, and returns to the oil pan through a rough-filtering oil return port; the primary fine separation structure can separate oil drops in the oil-gas mixed gas and return the oil drops to the oil sump through a primary oil return port; the secondary fine separation structure can separate oil drops in the oil-gas mixed gas and return the oil drops to the oil sump through the primary oil return port; the tertiary fine separation structure can make the oil drop in the oil-gas mixture separate out, gets back to the oil pan through the second grade oil return opening, and the oil-gas mixture passes through discharge through the gas outlet behind the tertiary fine separation structure.
Description
Technical Field
The utility model relates to an oil-gas separation technical field especially relates to a high efficiency oil-gas separation device.
Background
At present, when an engine works, part of combustible mixed gas and combustion products can blow into a crankcase through a cylinder through a piston ring, the part of piston blow-by gas carries part of engine oil to enter the cylinder for combustion through a crankcase ventilation system, and if the engine oil is not separated from the piston blow-by gas in time, the phenomenon that the engine burns out the engine oil is caused.
The existing solution for the phenomenon of 'engine oil burning' of an engine is realized by using a cyclone oil-gas separator, as shown in fig. 1, the working principle is as follows: when oil mist gas enters the cyclone separating tube along the axial direction, airflow is strongly rotated under the guiding action of the guide vanes, the airflow spirally enters the cyclone barrel downwards along the barrel, oil drops with high density are thrown to the wall of the separator under the action of centrifugal force, and fall along the wall of the separator and flow out of an oil outlet of the cyclone tube to an oil sump under the action of gravity. The rotating airflow is contracted in the cylinder body and flows towards the center, and secondary vortex is formed upwards and flows out from the top outlet through the air guide pipe.
And the labyrinth type integrated oil-gas separator is used for solving the phenomenon of 'engine oil burning' of the engine, as shown in figure 2, the working principle is as follows: labyrinth type oil-gas separator theory of operation: the oil mist with high flow speed enters the labyrinth separator and can impact on the labyrinth baffle, and the oil mist is gradually converged into heavier oil drops. Oil droplets settle to the tube wall under the action of gravity and accumulate in the oil return tube and flow back to the crankcase.
The existing cyclone oil-gas separator technology has the defects that when an engine runs at a high speed, the centrifugal force is large, and the oil-gas separation effect is good. When the engine runs at low speed, the centrifugal force is small, the oil-gas separation effect is poor, and the common rotating speed interval of the engine is a low rotating speed interval, so the oil-gas separator has poor effect.
The labyrinth type integrated oil-gas separator in the prior art has the defects that the impact type oil-gas separation module is integrated on a cylinder cover shield, the effect is better, but the impact type oil-gas separator is only suitable for a plastic cylinder cover shield, has high requirement on space and is not suitable for most engines.
Disclosure of Invention
Technical problem to be solved
Based on the above problem, the present disclosure provides a high efficiency oil-gas separation device to alleviate technical problem such as oil-gas separator effect is poor in the prior art.
(II) technical scheme
The present disclosure provides a high-efficient oil-gas separation device, includes:
the rough separation structure is a wave-shaped boss structure, is arranged in the box body and is fixedly connected with the air inlet end at the upper part of the box body, oil-gas mixed gas enters from the air inlet, is partially cooled into liquid through the collision with the boss, returns to the oil pan through a rough filtration oil return port, and forms rough separation oil-gas mixed gas after passing through the rough separation structure;
the primary fine separation structure can separate oil drops in the roughly separated oil-gas mixed gas and return the oil drops to an oil sump through a primary oil return port, and the roughly separated oil-gas mixed gas forms a primary separated oil-gas mixed gas through the primary fine separation structure;
the secondary fine separation structure can separate oil drops in the primary separated oil-gas mixed gas and return the oil drops to the oil pan through a primary oil return port, and the primary separated oil-gas mixed gas forms a secondary separated oil-gas mixed gas through the secondary fine separation structure;
tertiary fine-separation structure can make oil among the second grade separation oil gas mist drips to separate out, gets back to the oil pan through the second grade oil return opening, just the second grade separation oil gas mist passes through discharge through the gas outlet behind the tertiary fine-separation structure.
In the embodiment of the disclosure, the fine separation structure of one-level, including establishing the one-level orifice plate that is equipped with one-level pore passageway inside the box and the one-level dentate plate that is equipped with little boss, one-level orifice plate and box fixed connection, the coarse separation oil gas mixture passes through the one-level pore passageway of one-level orifice plate makes the oil droplet in the coarse separation oil gas mixture condense into big oil droplet, and passes through the one-level orifice plate clashes in with box fixed connection and all have the space with box upper portion and box lower part on the one-level dentate plate, makes the coarse separation oil gas mixture pass through the one-level orifice plate with box upper portion reaches the space of box lower part, and wherein oil droplet adsorbs on the one-level dentate plate, carries out oil gas separation.
In the embodiment of the disclosure, the smart isolating construction of second grade, including establishing the second grade orifice plate that is equipped with the second grade orifice passage inside the box and the second grade dentate plate that is equipped with little boss, second grade orifice plate and box fixed connection, the one-level separation gas-oil mixture passes through the second grade orifice passage of second grade orifice plate makes the oil droplet in the one-level separation gas-oil mixture condense into big oil droplet, and passes through the second grade orifice plate clashes in with box fixed connection and all have the space with box upper portion and box lower part on the second grade dentate plate, makes the one-level separation gas-oil mixture passes through the second grade orifice plate with box upper portion reaches the space of box lower part, and wherein oil droplet adsorbs on the second grade dentate plate, carries out oil-gas separation.
In the embodiment of the disclosure, tertiary accurate isolating construction, including establishing the inside tertiary orifice plate that is equipped with tertiary orifice passage of box and being equipped with the tertiary dentate plate that the profile of tooth is the rectangle structure, tertiary orifice plate and box fixed connection, second grade separation gas-oil mixture passes through the tertiary orifice passage of tertiary orifice plate makes the second grade separation gas-oil mixture gas oil droplet condense into the oil droplet, and pass through tertiary orifice plate clashes in with box fixed connection and with the box lower part have the space tertiary dentate plate is last, makes second grade separation gas-oil mixture gas passes through tertiary orifice plate with the space of box lower part, and wherein oil droplet adsorbs on tertiary dentate plate, carries out oil-gas separation.
In the embodiment of the present disclosure, the distances between the primary orifice plate and the primary toothed plate, between the secondary orifice plate and the secondary toothed plate, and between the tertiary orifice plate and the tertiary toothed plate are 5 mm.
In the embodiment of the disclosure, the primary pore channel of the primary pore plate and the secondary pore channel of the secondary pore plate are arranged on the side of the corresponding pore plate close to the lower part of the box body, the thicknesses of the pore channels of the primary pore plate and the secondary pore plate are 5mm, and the thicknesses of the upper blank part are 3 mm.
In the embodiment of the present disclosure, the distance between the primary castellated plate and the secondary castellated plate and the gap between the upper part of the box body is 12mm, and the distance between the primary castellated plate and the gap between the secondary castellated plate and the lower part of the box body is 5 mm.
In the embodiment of the disclosure, the distance between the three-stage tooth form and the gap at the lower part of the box body is 2.5 mm.
In the embodiment of the disclosure, the heights of the coarse-filtration oil return port, the primary oil return port and the secondary oil return port are H1, H2 and H3 respectively, and H1 is smaller than H2, and H2 is smaller than H3.
In the embodiment of the disclosure, an air supply structure is arranged in front of the air outlet of the high-efficiency oil-gas separation device.
(III) advantageous effects
According to the technical scheme, the high-efficiency oil-gas separation device disclosed by the invention has at least one or part of the following beneficial effects:
(1) the mounting on the cylinder cover shields made of various materials can be realized;
(2) the arrangement requirement of a small space can be met, the disassembly and the assembly are convenient, and the manufacturing cost is low;
(3) the oil-gas separation device is high in efficiency and good in separation effect, and the oil-gas separation requirements of the engine under various working conditions are met;
drawings
FIG. 1 is a schematic diagram of a cyclone oil-gas separator in the prior art;
FIG. 2 is a schematic diagram of the structure and principle of a labyrinth type integrated oil-gas separator in the prior art;
FIG. 3 is a schematic view of the inside of a high-efficiency oil-gas separation device in an embodiment of the present disclosure;
FIG. 4 is a sectional view of an efficient oil-gas separation device in an embodiment of the disclosure;
FIG. 5 is a schematic diagram of a coarse separation structure of the high-efficiency oil-gas separation device in the embodiment of the disclosure;
FIG. 6 is a schematic diagram of a primary fine separation structure and a secondary fine separation structure of the high-efficiency oil-gas separation device in the embodiment of the present disclosure;
FIG. 7 is a schematic view of a primary fine separation structure and a toothed plate structure in a secondary fine separation structure of the high-efficiency oil-gas separation device in the embodiment of the present disclosure;
FIG. 8 is a schematic diagram of a three-stage fine separation structure of the high-efficiency oil-gas separation device in the embodiment of the present disclosure;
FIG. 9 is a schematic view of an air make-up structure of the high-efficiency oil-gas separation device in the embodiment of the present disclosure;
FIG. 10 is a schematic diagram of an application and installation of the high-efficiency oil-gas separation device in the embodiment of the present disclosure;
[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure
1 wave boss structure
2 first-level orifice plate
21 primary pore channel
3 first-stage toothed plate
4-level pore plate
41 Secondary pore channel
5-stage toothed plate
6 three-stage orifice plate
61 three-stage pore channel
7 three-stage toothed plate
8 PCV valve
9 crankcase ventilation pipe interface
10 air supply structure
11 coarse filtration oil return port
12 first-level oil return port
13-grade oil return port
14 upper part of the box body
15 lower part of the box body
16 air inlet
17 one-way valve
18 first nylon tube
19 second nylon tube
Detailed Description
The utility model provides a high-efficient oil-gas separation device, high-efficient oil-gas separation device has that oil-gas separation is efficient, and separation effect is good, satisfies the oil-gas separation demand under each operating mode of engine, and this high-efficient oil-gas separation device can install on the cylinder cap guard shield of various materials, and installation space is little, the dismouting of being convenient for, low in manufacturing cost.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
In an embodiment of the present disclosure, there is provided a high efficiency oil-gas separation device, as shown in fig. 3 and 4, including: the oil-gas separation structure is shown in fig. 3 and 4. The oil-gas mixed gas enters the cavity and is subjected to rough filtration and oil return. Then the mixed gas passes through the primary orifice plate 2, oil drops are formed by collision when the mixed gas passes through the small holes, and the oil drops flow into the oil return groove and are discharged through the oil return hole. The mixed gas passes through the secondary pore plate 4, the secondary tooth-shaped plate 5, the tertiary pore plate 6 and the tertiary tooth-shaped plate 7, and engine oil is separated to the maximum extent. A certain number of small holes with certain diameters are distributed below the primary orifice plate 2 and the secondary orifice plate 4, and because the density of the mixed gas just entering the cavity is higher, the mixed gas is distributed more below the cavity, and the blow-by gas can only pass through a small hole channel; the purpose of the orifice plate is to allow the blow-by gas to coalesce in the orifice passage from small oil droplets to large oil droplets.
As shown in fig. 5, the rough separation structure is a wave-shaped boss structure 1, which is arranged inside the tank body and is fixedly connected to the end of the gas inlet 16 at the upper part 14 of the tank body, so that the contact area between the boss and the oil-gas mixture can be increased, the path length of the oil-gas mixture entering the cavity is increased, the oil-gas mixture enters from the gas inlet 16, part of the oil-gas mixture is cooled into liquid through collision with the wave-shaped boss 1, the liquid returns to the oil pan through a rough filtration oil return port 11, and the oil-gas mixture forms rough separation oil-gas mixture after passing through the rough separation structure;
as shown in fig. 3, 4 and 6, the primary fine separation structure comprises a primary pore plate 2 provided with a primary pore channel and a primary tooth-shaped plate 3 provided with a small boss, which are arranged in a box body, the primary orifice plate 2 is fixedly connected with the box body, the roughly separated oil-gas mixed gas passes through the primary orifice passage 21 of the primary orifice plate 3, so that small oil drops in the roughly separated oil-gas mixed gas are condensed into large oil drops, and the oil drops in the roughly separated oil-gas mixed gas are absorbed on the primary tooth-shaped plate 3 and return to the oil pan through the primary oil return port 12 by impacting the primary tooth-shaped plate 3 which is fixedly connected with the box body and has gaps with the upper part 14 and the lower part 15 of the box body through the primary pore plate 2, the roughly separated oil-gas mixed gas passes through gaps among the primary pore plate 2, the upper part 14 of the box body and the lower part 15 of the box body to form a primary separated oil-gas mixed gas;
as shown in fig. 3, 4 and 6, the secondary fine separation structure comprises a secondary pore plate 4 provided with a secondary pore channel 41 and a secondary tooth-shaped plate 5 provided with a small boss, the secondary pore plate 4 is fixedly connected with the box body, the primary separated oil-gas mixed gas passes through the secondary pore channel 41 of the secondary pore plate 4, so that small oil drops in the primary separated oil-gas mixed gas are condensed into large oil drops, and the oil drops in the primary separation oil-gas mixed gas are adsorbed on the secondary tooth-shaped plate 5 and return to the oil pan through the primary oil return port 12 by the way that the secondary pore plate 4 impacts the secondary tooth-shaped plate 5 which is fixedly connected with the box body and has gaps with the upper part 14 and the lower part 15 of the box body, and the first-stage separation oil-gas mixed gas passes through the gaps among the second-stage pore plate 4, the upper part 14 of the box body and the lower part 15 of the box body to form a second-stage separation oil-gas mixed gas;
as shown in fig. 7, the primary or secondary castellated plates provided with small bosses are provided to increase the adsorption area, so that oil droplets are more easily adsorbed.
As shown in fig. 3, 4 and 8, the three-stage fine separation structure comprises a three-stage pore plate 6 provided with a three-stage pore channel 61 and a three-stage toothed plate 7 provided with a rectangular toothed structure, the three-level tooth-shaped plate is in a rectangular structure, so that oil drops can flow down, the three-level pore plate 6 is fixedly connected with the box body, the secondary separated oil-gas mixed gas passes through the tertiary pore passage 61 of the tertiary pore plate 6, so that the small oil drops in the secondary separated oil-gas mixed gas are condensed into large oil drops, and the oil drops in the second-stage separation oil-gas mixed gas are adsorbed on the third-stage toothed plate 7 through the third-stage orifice plate 6 which is fixedly connected with the box body and has a gap with the lower part 15 of the box body, and then return to the oil pan through a second-stage oil return port 13, and the secondary separation oil-gas mixed gas is discharged through the gas outlet after passing through the gap between the tertiary pore plate 6 and the lower part 15 of the box body.
In the embodiment of the present disclosure, as shown in fig. 3 and 9, there is a gas make-up structure in front of the outlet of the high efficiency oil-gas separation device for adjusting the crankcase pressure and diluting the concentration of the fuel in the crankcase blowby gas in the partial load.
In the embodiment of the present disclosure, the distance between the primary orifice plate 2 and the primary castellated plate 21 and the distance between the secondary orifice plate 4 and the secondary castellated plate 41 are 5 mm.
Furthermore, the thickness of the first-stage toothed plate 3 and the second-stage toothed plate 5 is 3mm, small bosses are distributed on the plates, and the height of each small boss is 3 mm.
In the embodiment of the present disclosure, the primary orifice passage 21 of the primary orifice plate 2 and the secondary orifice passage 41 of the secondary orifice plate 4 are disposed on the side of the corresponding orifice plate close to the lower part 15 of the tank body.
In the embodiment of the present disclosure, the plate thickness of the hole channel of the primary orifice plate 2 and the secondary orifice plate 4 is 5mm, and the plate thickness of the upper blank is 3mm, so that the design has an advantage in that material can be saved.
In the disclosed embodiment, the gap between the primary castellated plate 3 and the secondary castellated plate 5 and the upper box portion 14 is 12mm, and the gap between the primary castellated plate and the lower box portion 15 is 5mm, so that heavier blowby gas passes through the lower portion and lighter blowby gas passes through the upper portion.
In the embodiment of the present disclosure, the distance between the tertiary orifice plate 6 and the tertiary toothed plate 7 is 5mm, and since the secondary separated gas-oil mixture gas reaching the tertiary fine separation structure is less dense than the secondary fine separation structure or the primary fine separation structure and the mixture gas, the orifice passage on the tertiary orifice plate 6 is arranged above and has a smaller aperture than the secondary orifice passage or the primary orifice passage.
In the embodiment of the present disclosure, the distance between the three-stage tooth form and the gap of the box lower portion 15 is 2.5 mm.
As shown in fig. 4, in the embodiment of the present disclosure, the oil return ports are designed to be arranged according to the spatial arrangement of the cylinder head shroud and the camshaft chamber of the cylinder head, and the height of the oil return ports is determined. Generally, in order to improve the oil-gas separation efficiency, a coarse separation structure and three fine separation structures are designed, and then oil return ports are divided into a coarse-filtration oil return port 11, a primary oil return port 12 and a secondary oil return port 13, and the heights of the coarse-filtration oil return port, the primary oil return port and the secondary oil return port are respectively H1, H2 and H3.
The pressure drop of the oil-gas separation structures of the oil-gas mixed gas can be calculated according to the height of the oil return port. The crankcase pressure is P0 (which can be measured through experiments), the pressure after the coarse separation structure is P1, the pressure after the primary oil-gas separation structure is P2, and the pressure after the secondary oil-gas separation structure is P3, and the values of P1, P2 and P3 can be calculated according to the formula.
P1+ρ×g×(H1-h)＝P0
P2+ρ×g×(H2-h)＝P0
P3+ρ×g×(H2-h)＝P0
Where ρ is the engine oil density, and h is the margin of the height of the oil return port, and h is 10 mm.
In the embodiment of the disclosure, the heights of the coarse-filtration oil return port, the primary oil return port and the secondary oil return port are H1, H2 and H3 respectively, and H1 is smaller than H2, and H2 is smaller than H3.
In the embodiment of the disclosure, the outlet gas of the high-efficiency oil-gas separation device is divided into two paths, one path is connected to the inlet manifold through the PCV valve 8 and the first nylon pipe 18, and the other path is connected to the rear end of the air filter through the check valve 17 and the second nylon pipe 19.
In the disclosed embodiment, the number and diameter of the orifice passages are obtained by CFD calculation, and the boundary conditions are the inlet pressure P0 (measured by experiment) and the outlet flow, i.e., the piston blow-by amount (measured by experiment). In addition, after the number and the diameter of the pore channels are determined, the pressure of the oil-gas mixture after passing through the coarse separation structure is smaller than the calculated P1, the pressure after reaching the primary fine separation structure and the secondary fine separation structure is smaller than the calculated P2, and the pressure after reaching the tertiary fine separation structure is smaller than the calculated P2.
The high-efficiency oil-gas separation device is an assembly module, is arranged on the cylinder cover protecting cover, is flexible in arrangement and is convenient to disassemble and assemble. The following assumptions are adopted in the CFD analysis and calculation of the efficient oil-gas separation device:
(1) separation efficiency is oil drop impact mass/total oil drop mass. In the software model, the oil drop particles are supposed to be captured when the oil drop particles touch the wall surface of the high-efficiency oil-gas separation device.
(2) Since the probability of distribution of the oil droplet particles at the inlet face is unknown, it is assumed that the droplet particles are evenly distributed at the inlet face.
(3) The diameters of five oil drop particles recommended by AVL are 1 μm, 2 μm, 5 μm, 10 μm and 20 μm respectively because the diameter distribution rule of the oil drop particles is unknown.
(4) Since the weight ratio of each oil droplet particle is unknown, only the separation efficiency of each oil droplet particle can be evaluated, and the total separation efficiency cannot be obtained.
The efficient oil-gas separation device adopts two-phase flow model calculation, and the CFD analysis process is as follows:
(1) firstly, the steady state calculation is carried out on the flow field of the high-efficiency oil-gas separation device, and the information such as the pressure difference, the flow velocity and the like of the inlet and the outlet of the high-efficiency oil-gas separation device can be obtained.
(2) After the calculation convergence, oil drops with a certain diameter are sprayed into the efficient oil-gas separation device by the SPRAY module to perform transient calculation, and the separation efficiency of the efficient oil-gas separation device under the oil drops with the diameter is obtained by calculating the collision mass and the total mass of the oil drops.
(3) And sequentially calculating the separation efficiency of oil drops with different sizes.
Through analysis, the analysis efficiency of the high-efficiency oil-gas separation device is more than 99%.
Tests prove that the maximum oil leakage amount of the high-efficiency oil-gas separation device is 0.3g/h and less than 1g/h of index, and the related margin is large.
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should clearly recognize that the present disclosure is directed to a high efficiency oil and gas separation device.
To sum up, this disclosure provides a high-efficient oil-gas separation device, high-efficient oil-gas separation device has that oil-gas separation is efficient, and separation effect is good, satisfies the oil-gas separation demand under each operating mode of engine, and this high-efficient oil-gas separation device can install on the cylinder cap protecting cover of various materials, and installation space is little, the dismouting of being convenient for, low in manufacturing cost. The invention provides a set of high-efficiency oil-gas separation structure summarized by a large number of practices through design, analysis, verification and optimization.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. An efficient oil-gas separation device comprising:
the rough separation structure is a wave-shaped boss structure, is arranged in the box body and is fixedly connected with the air inlet end at the upper part of the box body, oil-gas mixed gas enters from the air inlet, is partially cooled into liquid through the collision with the boss, returns to the oil pan through a rough filtration oil return port, and forms rough separation oil-gas mixed gas after passing through the rough separation structure;
the primary fine separation structure can separate oil drops in the roughly separated oil-gas mixed gas and return the oil drops to an oil sump through a primary oil return port, and the roughly separated oil-gas mixed gas forms a primary separated oil-gas mixed gas through the primary fine separation structure;
the secondary fine separation structure can separate oil drops in the primary separated oil-gas mixed gas and return the oil drops to the oil pan through a primary oil return port, and the primary separated oil-gas mixed gas forms a secondary separated oil-gas mixed gas through the secondary fine separation structure;
tertiary fine-separation structure can make oil among the second grade separation oil gas mist drips to separate out, gets back to the oil pan through the second grade oil return opening, just the second grade separation oil gas mist passes through discharge through the gas outlet behind the tertiary fine-separation structure.
2. The high-efficient oil-gas separation device of claim 1, wherein, the fine separation structure of one-level, including establishing the one-level orifice plate that is equipped with one-level pore passageway and is equipped with the one-level dentate plate of little boss inside the box, one-level orifice plate and box fixed connection, the coarse separation oil-gas mixture passes through the one-level pore passageway of one-level orifice plate makes the oil droplet in the coarse separation oil-gas mixture condense into big oil droplet, and passes through the one-level orifice plate strike in with box fixed connection and with box upper portion and box lower part all have the space on the one-level dentate plate, make the coarse separation oil-gas mixture pass through the one-level orifice plate with box upper portion reaches the space of box lower part, and wherein oil droplet adsorbs on the one-level dentate plate, carries out oil.
3. The efficient oil-gas separation device according to claim 1, wherein the second-stage fine separation structure comprises a second-stage pore plate and a second-stage toothed plate, the second-stage pore plate is provided with a second-stage pore channel, the second-stage pore plate is provided with a small boss, the second-stage pore plate is fixedly connected with the box body, the first-stage separation oil-gas mixture passes through the second-stage pore channel of the second-stage pore plate, small oil drops in the first-stage separation oil-gas mixture are condensed into large oil drops, the large oil drops are made to collide with the second-stage pore plate, gaps are formed between the second-stage pore plate and the upper portion of the box body, and gaps between the second-stage pore plate and the lower portion of the box body, oil drops are adsorbed on the second-stage toothed plate, and oil.
4. The efficient oil-gas separation device according to claim 1, wherein the tertiary fine separation structure comprises a tertiary pore plate provided with a tertiary pore channel and a tertiary tooth plate provided with a rectangular tooth shape, the tertiary pore plate is fixedly connected with the box body, the secondary separation oil-gas mixture passes through the tertiary pore channel of the tertiary pore plate, so that oil drops in the secondary separation oil-gas mixture are condensed into large oil drops, and the secondary separation oil-gas mixture passes through the tertiary pore plate to impact on the tertiary tooth plate which is fixedly connected with the box body and has a gap with the lower part of the box body, so that the secondary separation oil-gas mixture passes through the tertiary pore plate and the gap of the lower part of the box body, and oil drops are adsorbed on the tertiary tooth plate for oil-gas separation.
5. The high efficiency oil and gas separation device of claim 1, wherein the distance between the primary orifice plate and the primary castellated plate, the distance between the secondary orifice plate and the secondary castellated plate, and the distance between the tertiary orifice plate and the tertiary castellated plate are 5 mm.
6. The high-efficiency oil-gas separation device according to claim 1, wherein the primary orifice passage of the primary orifice plate and the secondary orifice passage of the secondary orifice plate are arranged on the side of the corresponding orifice plate close to the lower part of the tank body, the plate thickness of the orifice passages of the primary orifice plate and the secondary orifice plate is 5mm, and the plate thickness of the upper blank is 3 mm.
7. The high efficiency oil and gas separation device of claim 1, wherein the primary and secondary castellated plates are 12mm from the space between the upper portion of the casing and 5mm from the space between the lower portion of the casing.
8. The high efficiency oil and gas separation device of claim 1, wherein the distance of the gap between the tertiary tooth profile and the lower part of the tank body is 2.5 mm.
9. The high efficiency oil and gas separation device of claim 1, wherein the coarse filtration oil return port, the primary oil return port and the secondary oil return port have heights of H1, H2 and H3, respectively, and H1 is less than H2 and H2 is less than H3.
10. The high efficiency oil and gas separation device of claim 1, wherein an air make-up structure is arranged in front of the air outlet of the high efficiency oil and gas separation device.
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| CN202011464290.7A CN112459863A (en) | 2020-12-11 | 2020-12-11 | High-efficient oil-gas separation device |
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| CN202011464290.7A CN112459863A (en) | 2020-12-11 | 2020-12-11 | High-efficient oil-gas separation device |
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| CN112459863A true CN112459863A (en) | 2021-03-09 |
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| CN114790952A (en) * | 2022-05-10 | 2022-07-26 | 广西玉柴动力股份有限公司 | Oil-gas separator for cylinder head cover with water jacket structure |
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