A gas-liquid separation blade with microstructure interlayer

Abstract

The present invention relates to a gas-liquid separation blade with a microstructure interlayer, comprising a front guide section and a rear guide section, a streamlined blade connected between the front guide section and the rear guide section, four hydrophobic grooves on the streamlined blade, a first hydrophobic groove and a third hydrophobic groove arranged at intervals on the upper side of the streamlined blade and opening upward, a second hydrophobic groove and a fourth hydrophobic groove arranged at intervals on the lower side of the streamlined blade and opening downward, the inner walls of the first hydrophobic groove, the second hydrophobic groove, the third hydrophobic groove and the fourth hydrophobic groove are respectively fixed with microstructure interlayers, and the surface of the microstructure interlayer is densely covered with protrusions that form large droplets to roll down after the small droplets entrained by the airflow collide. The present invention adopts a hydrophobic groove with a microstructure interlayer, and by arranging densely arranged protrusions on the microstructure interlayer, the droplets can be accelerated to fall off, the formation rate of the liquid film can be reduced, the drainage performance of the blade can be enhanced, the occurrence of secondary entrainment can be effectively reduced, and a higher gas-liquid separation efficiency can be obtained.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to a gas-liquid separation blade with a microstructure interlayer applied to an air intake filter device at a high flow rate. Background Art

[0002] The gas-liquid separation blades are installed in the air intake filter of the ship to filter out moisture and impurities in the air intake channel, ensure the cleanliness of the air intake, reduce the abrasion and chemical corrosion caused by moisture and salt, thereby ensuring the performance of the equipment and effectively improving the life of the equipment. The gas-liquid separation blades generally have a low ability to filter out fine droplets, and improving efficiency will produce corresponding resistance losses and increase the power consumption of the power system.

[0003] Traditional gas-liquid separation blades cannot be disassembled. Once the blade drain groove is partially damaged or severely corroded, the blade must be replaced, which causes a waste of resources to a certain extent. When faced with complex working conditions, the method of forming a large-area hydrophobic coating with stable properties on the baffle surface is less feasible and operable, so new technologies need to be introduced.

[0004] The spacing between the gas-liquid separation blades will affect the filtration performance. When the blade spacing increases, the filtration efficiency decreases and the overall resistance loss becomes smaller. In addition, there are stringent requirements on the inlet air velocity. The commonly used inlet air velocity of traditional gas-liquid separation blade working conditions is 1 to 7 m / s.

[0005] The hydrophobic grooves of traditional gas-liquid separation blades have a single scale and cannot form eddies of different scales, and have a weak ability to capture particles (mist) of various sizes.

[0006] Since the total width of the filter space is usually fixed, the larger the blade spacing, the fewer blades can be accommodated, the demister curb weight is reduced accordingly, and the material and processing costs are reduced. The flow area of ​​the filter is fixed, and the increase in the intake volume will lead to a high intake flow rate. Traditional gas-liquid separation blades will cause secondary entrainment under high flow conditions, resulting in reduced filtration efficiency. Summary of the invention

[0007] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, the present invention provides a gas-liquid separation blade with a microstructure interlayer that can be used to meet various flow rates under low resistance conditions.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a gas-liquid separation blade with a microstructure interlayer, including a front guide section and a rear guide section, a streamlined blade is connected between the front guide section and the rear guide section, the streamlined blade has four hydrophobic grooves, the first hydrophobic groove and the third hydrophobic groove are arranged at intervals on the upper side of the streamlined blade and the openings face upward, the second hydrophobic groove and the fourth hydrophobic groove are arranged at intervals on the lower side of the streamlined blade and the openings face downward, the inner walls of the first hydrophobic groove, the second hydrophobic groove, the third hydrophobic groove and the fourth hydrophobic groove are respectively fixed with microstructure interlayers, and the surface of the microstructure interlayer is densely covered with protrusions on which large droplets roll down after being impacted by small droplets entrained by the airflow.

[0009] Specifically, the protrusion is a square column, a cylinder or a prism.

[0010] Preferably, the protrusions are square pillars, and the microstructure interlayer is provided with densely arranged protrusions in the shape of square pillars. Since the contact area of ​​the protrusions is small, when small droplets hit the protrusions, larger droplets (rather than forming liquid films) will be formed and roll down, thereby enhancing the hydrophobicity of the blades.

[0011] The cross-sectional shapes of the streamlined blades are all large-diameter arc lines, and adjacent arc lines are tangent to each other.

[0012] The opening angle of the first hydrophobic groove is 30° to 90°, the opening angle of the second hydrophobic groove is 0° to 30°, the opening angle of the third hydrophobic groove is 10° to 20°, and the opening angle of the fourth hydrophobic groove is 20° to 70°.

[0013] The front guide section is connected to the first drain groove in an arc transition, and the angle between the two is 85° to 150°. The rear guide section is connected to the fourth drain groove in an arc transition, and the angle between the two is 135° to 180°.

[0014] The beneficial effects of the present invention are as follows: the present invention adopts a hydrophobic groove with a microstructure interlayer, and provides densely arranged protrusions on the microstructure interlayer to accelerate the shedding of droplets, reduce the formation rate of the liquid film, enhance the drainage performance of the blades, effectively reduce the occurrence of secondary entrainment, obtain higher gas-liquid separation efficiency, and is suitable for gas-liquid separation operations under high flow rate and low resistance conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of the microstructured interlayer of the present invention.

[0018] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Figure 4 It is an installation schematic diagram when the present invention is applied.

[0020] In the figure: 1. front guide section, 2. first hydrophobic groove, 3. third hydrophobic groove, 4. streamlined blade, 5. rear guide section, 6. microstructure interlayer, 7. fourth hydrophobic groove, 8. second hydrophobic groove, 9. protrusion. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] like Figure 1 The gas-liquid separation blade with a microstructure interlayer shown in the figure includes a front guide section 1, a rear guide section 5 and a streamlined blade 4. The cross-sectional shape of the streamlined blade 4 is a large-diameter arc line and adjacent arc lines are tangent. The two ends of the streamlined blade 4 are smoothly connected to the front guide section 1 and the rear guide section 5 arcs respectively.

[0023] Four drain grooves are provided on the streamlined blade 4, among which the first drain groove 2 and the third drain groove 3 are arranged at intervals on the upper side of the streamlined blade 4 and open upward, the first drain groove 2 and the third drain groove 3 share a drain hook, the second drain groove 8 and the fourth drain groove 7 are arranged at intervals on the lower side of the streamlined blade 4 and open downward, the second drain groove 8 and the fourth drain groove 7 share a drain hook.

[0024] The opening angle of the first hydrophobic groove 2 is 30°, the opening angle of the second hydrophobic groove 8 is 15°, the opening angle of the third hydrophobic groove 3 is 15°, and the opening angle of the fourth hydrophobic groove 7 is 70°.

[0025] Microstructure interlayers 6 are fixed on the inner walls of the first hydrophobic groove 2, the second hydrophobic groove 8, the third hydrophobic groove 3 and the fourth hydrophobic groove 7 by screws. Figure 2 , Figure 3 As shown, protrusions 9 are densely spaced on the surface of the microstructure interlayer 6, on which small droplets entrained by the airflow collide to form large droplets that roll down. The structural form of the protrusions 9 is not limited, and a square prism, a cylinder, or a prism can be used. The protrusions 9 in this embodiment are of a square prism structure.

[0026] The microstructured interlayer 6 is detachable and easy to process and maintain. By densely distributing the protrusions 9 on the microstructured interlayer 6, the contact area between the surface of the microstructured interlayer 6 and the droplets can be reduced, and the adhesion force of the solid-liquid interface can be reduced, so as to reduce the adsorption capacity of the blade wall to the droplets, which is conducive to the rolling of the droplets, so that the droplets are discharged from the separator before spreading, thereby enhancing the hydrophobicity of the blade surface and improving the filtration efficiency.

[0027] The four drainage grooves are all large radius outer arcs. The front guide section 1 is connected to the first drainage groove 2 by an arc transition with an angle of 130°. The rear guide section 5 is connected to the fourth drainage groove 7 by an arc transition with an angle of 155°.

[0028] Thus, the basic structure of the gas-liquid separation blade is composed of a streamlined blade 4, a front guide section 1, a rear guide section 5, four hydrophobic grooves and four microstructured interlayers 6. The cross-sectional area of ​​the four hydrophobic grooves increases step by step from the first hydrophobic groove 2 to the fourth hydrophobic groove 7. The size of the blade along the gas flow direction is about 100 mm, and the thickness of the blade varies, with the thinnest part being 2 mm. The size can be adjusted according to actual needs while ensuring the structure and performance.

[0029] like Figure 4 As shown, a plurality of such gas-liquid separation blades are arranged vertically and at equal intervals facing the incoming direction of the gas flow to form a plurality of curved channels.

[0030] Traditional gas-liquid separation blades are used in acid production projects. The airflow shears the acid liquid surface to form small droplets, which enter the exhaust channel with the airflow. When the airflow flows through the curved parallel channel formed by the gas-liquid separation blades, it will hit the blade wall. Under the action of the centrifugal force of the channel and the inertia of the droplets themselves, the droplets will hit the blade wall to form a water film, and under the action of gravity, they will drip to the bottom and be separated.

[0031] In the gas-liquid separation blade of the present invention, when the airflow shears the acid liquid surface to form small droplets, the small droplets enter the exhaust channel with the airflow and hit the wall of the blade when passing through the curved channel formed by the gas-liquid separation blade. Since the microstructure interlayer 6 arranged on the inner wall of the hydrophobic groove is densely arranged with protrusions 9, and the contact area of ​​the protrusions 9 is small, the small droplets will form larger droplets (instead of forming a liquid film) and roll down after hitting the protrusions 9, which slows down the formation rate of the liquid film, enhances the hydrophobicity and drainage performance of the blade, and accelerates the shedding of the droplets. At the same time, the hydrophobic groove has a large scale and can be suitable for high flow rate conditions, effectively reducing the occurrence of secondary entrainment during gas-liquid separation.

[0032] Under high-speed air intake conditions, compared with traditional blades, the present invention maintains almost unchanged resistance loss while achieving higher gas-liquid separation efficiency, and has the characteristics of being suitable for high flow rate and low resistance conditions, easy to disassemble, strong hydrophobicity and high separation efficiency.

[0033] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A gas-liquid separation blade with a microstructure interlayer, comprising a front guide section and a rear guide section, wherein a streamlined blade is connected between the front guide section and the rear guide section, and wherein: The streamlined blade has four hydrophobic grooves, the first and third hydrophobic grooves are arranged at intervals on the upper side of the streamlined blade and open upward, the second and fourth hydrophobic grooves are arranged at intervals on the lower side of the streamlined blade and open downward, the inner walls of the first hydrophobic groove, the second hydrophobic groove, the third hydrophobic groove and the fourth hydrophobic groove are respectively fixed with microstructured interlayers, and the surface of the microstructured interlayer is densely covered with protrusions at intervals for large droplets to roll down after small droplets entrained by air flow collide; The cross-sectional shapes of the streamlined blades are all large-diameter arcs, and adjacent arcs are tangent to each other; The opening angle of the first drain groove is 30° to 90°, the opening angle of the second drain groove is 15°, the opening angle of the third drain groove is 10° to 20°, and the opening angle of the fourth drain groove is 20° to 70°; The front guide section is connected to the first drain groove in an arc transition, and the angle between the two is 85° to 150°; the rear guide section is connected to the fourth drain groove in an arc transition, and the angle between the two is 135° to 180°; The first hydrophobic groove and the third hydrophobic groove share a hydrophobic hook, and the second hydrophobic groove and the fourth hydrophobic groove share a hydrophobic hook.

2. The gas-liquid separation blade with a microstructured interlayer as claimed in claim 1, characterized in that: The protrusion is a square column, a cylinder or a prism.

3. The gas-liquid separation blade with a microstructured interlayer as claimed in claim 1, characterized in that: The protrusion is a square column.

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