Anti-icing / deicing gas-liquid separator based on photoelectric thermal super-hydrophobic coating and rotatable hook groove

Abstract

The invention discloses an anti-icing / deicing gas-liquid separator based on a photoelectric thermal super-hydrophobic coating and a rotatable hook groove, and relates to the technical field of gas-liquid separators. The inertia level blade unit is formed by sequentially connecting an inlet flow guide section, a first transition section, a second transition section, a third transition section and an outlet flow guide section into a whole, the flow guide sections are all linear sections and located on the same plane, the transition sections are all arc sections and form an arched structure, and drainage hooks are hinged to the connecting positions of the transition sections correspondingly. The LED honeycomb array light source is arranged at the top of the photoelectric heat super-hydrophobic coating, and the copper electrode is mounted at the end of the photoelectric heat super-hydrophobic coating and connected with the adjustable power supply. And a switchable mode of photo-thermal passive anti-icing and electric heating active deicing is adopted, so that the device can adapt to different environmental conditions, and has the advantages of energy conservation, high efficiency and long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-liquid separators, in particular to an anti-icing / de-icing gas-liquid separator based on a photoelectric thermal super-hydrophobic coating and a rotatable hook groove. Background Art

[0002] An inertial separator is a device that separates particles in gas-solid or gas-liquid two-phase flows by utilizing the difference in inertia. Due to its simple structure and superior performance, it is widely used in industries such as industry, environmental protection, and energy. In particular, it plays a key role in gas turbine intake systems, filtering particulate matter (such as sand, dust, salt spray, and water droplets) from the air, primarily removing droplets from marine environments. Its operating principle is as follows: air carrying droplets flows into the inertial separator at a constant velocity. Upon reaching the curved section, the airflow changes direction, and the droplets entrained in the airflow impact the blade surface due to their greater inertia, forming a liquid film that is then discharged along the blade surface under the action of gravity.

[0003] Under cold or polar operating conditions, supercooled water droplets impinge on blade surfaces, forming a liquid film that freezes and gradually accumulates into an ice layer. Ice accumulation reduces the cross-sectional area of ​​the flow path, increases airflow resistance, and leads to a decrease in pressure ratio and flow rate, thus reducing the gas turbine's aerodynamic performance and separation efficiency. Furthermore, ice accumulation can corrode the blades, significantly reducing blade service life and even causing mechanical failure. Existing inertial separation technology solutions primarily focus on the impact of different blade structures and the structure and number of hydrophobic hooks and grooves on the aerodynamic performance and separation efficiency of inertial separators. The few de-icing solutions for inertial separators rely on traditional electric heating or hot gas injection to achieve anti-icing / de-icing. However, these traditional methods suffer from high energy consumption, low efficiency, and slow response. Furthermore, after the ice melts, water cannot be promptly delivered to expel the droplets from the inertial separator, resulting in the continued problem of secondary icing, which can affect the normal operation of the gas turbine. Therefore, the development of an efficient and energy-saving gas-liquid separator for anti-icing / de-icing is of great significance for the practical application of gas turbines.

[0004] Photoelectric thermal super-hydrophobic coating is a new type of functional material that combines photothermal conversion, electrothermal conversion and super-hydrophobic properties, which can significantly improve the anti-icing / de-icing efficiency of blades. For example, the Chinese invention patent with application number CN202411575029.2 proposes a photoelectric thermal super-hydrophobic composite film and its preparation method and application, and the Chinese invention patent with application number CN202211110238.0 proposes a preparation method of a flexible and adhesive electrothermal / photothermal super-hydrophobic coating. However, there is currently no technical solution for applying photoelectric thermal super-hydrophobic coating to the anti-icing / de-icing of the inertia stage of gas turbines. Summary of the Invention

[0005] In order to address the shortcomings of the background technology, the present invention provides an anti-icing / de-icing gas-liquid separator based on a photoelectric thermal super-hydrophobic coating and a rotatable hook groove. It adopts a switchable mode of photothermal passive anti-icing and electrothermal active de-icing, can adapt to different environmental conditions, and has the advantages of energy saving, high efficiency and long service life.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical scheme: an anti-icing / de-icing gas-liquid separator based on a photoelectric thermal super-hydrophobic coating and a rotatable hook groove, comprising a plurality of inertia-stage blade units arranged in parallel, a flow channel formed between each adjacent two inertia-stage blade units, the main body of the inertia-stage blade unit being sequentially connected and integrated by an inlet guide section, a first transition section, a second transition section, a third transition section and an outlet guide section, the inlet guide section and the outlet guide section being both straight segments and located on the same plane, the first transition section, the second transition section and the third transition section being all arc segments and forming an arched structure, a first hydrophobic hook being hingedly installed at the connection position between the first transition section and the second transition section on the outside of the arched structure, a second hydrophobic hook being hingedly installed at the connection position between the second transition section and the third transition section on the inside of the arched structure, the surface of the inertia-stage blade unit being evenly sprayed with a photoelectric thermal super-hydrophobic coating, an LED honeycomb array light source being arranged on the top of the inertia-stage blade unit, and a copper electrode being installed at the end of the inertia-stage blade unit and connected to an adjustable power supply.

[0007] Furthermore, the connection positions of each section of the inertia stage blade unit are chamfered.

[0008] Furthermore, the surface of the inertia-stage blade unit is processed into a micro-nano structure by laser etching.

[0009] Furthermore, the first hydrophobic hook and the second hydrophobic hook can both rotate around the hinge by 0° to 90°, and can be positioned using pins after adjusting the rotation angle.

[0010] Furthermore, the photoelectric thermal super-hydrophobic coating has a thickness of 10-100 μm and a surface contact angle of >150°.

[0011] Furthermore, the LED honeycomb array light source is triggered and started by a humidity sensor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This invention uses a honeycomb LED array light source through photoelectric-thermal conversion to reduce the power consumption of active heating, addressing the high energy consumption and reduced efficiency of gas turbines caused by traditional methods such as electric heating and hot gas injection. The synergistic effect of photoelectric-thermal synergy ensures effective anti-icing and de-icing in extreme environments, overcoming the ineffectiveness of a single super-hydrophobic coating in low-temperature and high-humidity conditions. A switchable mode, using photothermal passive anti-icing as the primary method and electrothermal active de-icing as the supplementary method, allows for the coordinated use of passive anti-icing and active de-icing.

[0014] 2. The present invention enhances the bonding capacity of the photoelectric thermal super-hydrophobic coating through micro-nanostructures, solving the problem of conventional coatings being easily peeled off and failing under the high-speed airflow of gas turbines. The photoelectric thermal super-hydrophobic coating is used for anti-icing / de-icing, overcoming the difficulty in achieving uniform anti-icing / de-icing on the complex curved surfaces of the gas turbine inertial stage (such as the S-shaped leading edge).

[0015] 3. The present invention can adjust the opening of the drain groove according to actual working conditions through the rotatable drain hook structure, thereby improving the separation efficiency while avoiding large pressure loss and improving the overall performance of the inertia stage blade unit;

[0016] 4. The present invention can adapt to different environmental conditions through flexible switching of optical / electrical dual modes, solving the problem that the existing technology is difficult to adapt to complex working conditions such as day and night temperature differences, dry and wet alternation, etc., and has the overall advantages of energy saving, high efficiency and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the inertia stage blade unit in the gas-liquid separator of the present invention;

[0018] Figure 2 Schematic diagram of the principle of the gas-liquid separator of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the gas-liquid separator of the present invention.

[0020] In the figure: 1. Inlet guide section; 2. First transition section; 3. First hydrophobic hook; 4. First hydrophobic groove; 5. Second transition section; 6. Second hydrophobic hook; 7. Second hydrophobic groove; 8. Third transition section; 9. Outlet guide section; 10. Copper electrode; 11. Hinge; 12. Photoelectric thermal superhydrophobic coating; 13. Air inlet; 14. Flow channel; 15. Air outlet; 16. LED honeycomb array light source. DETAILED DESCRIPTION

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Combine Figure 1~Figure 2As shown, the anti-icing / de-icing gas-liquid separator based on the photoelectric thermal superhydrophobic coating and the rotatable hook groove includes a plurality of inertia-stage blade units arranged in parallel at equal intervals, and a flow channel 14 is formed between each two adjacent inertia-stage blade units. The two ends of the flow channel 14 serve as an air inlet 13 and an air outlet 15 respectively, and the whole is assembled into a gas-liquid separator for a marine gas turbine.

[0023] The present invention optimizes the design of the inertia-stage blade unit. The main body thereof is composed of an inlet guide section 1, a first transition section 2, a second transition section 5, a third transition section 8 and an outlet guide section 9, which are connected in sequence and integrated into one body. The main body is made of materials with good heat absorption and thermal conductivity. The inlet guide section 1 and the outlet guide section 9 are both straight sections and are located on the same plane. The first transition section 2, the second transition section 5 and the third transition section 8 are all arc sections and form an arched structure. The connection positions of the sections are chamfered to ensure that the inertia-stage blade unit is streamlined.

[0024] Based on the main body of the inertia-stage blade unit, a first hydrophobic hook 3 is hingedly mounted via a hinge 11 at the junction of the first transition section 2 and the second transition section 5. A second hydrophobic hook 6 is hingedly mounted via another hinge 11 at the junction of the second transition section 5 and the third transition section 8. Both the first and second hydrophobic hooks 3 and 6 can rotate about their respective hinges 11 from 0° to 90°, and can be positioned using pins after adjusting the rotation angle as needed. The first hydrophobic hook 3 is arranged on the outside of the arched structure, with its opening facing the air intake side and its interior space forming a first hydrophobic groove 4. The second hydrophobic hook 6 is arranged on the inside of the arched structure, with its opening facing the air intake side and its interior space forming a second hydrophobic groove 7. This allows for flexible adjustment of the openings of the first and second hydrophobic grooves 4 and 7, increasing them at high flow rates and decreasing them at low flow rates. This improves separation efficiency while avoiding significant pressure loss, significantly enhancing the overall performance of the inertia-stage blade unit.

[0025] In addition, the photoelectric thermal super-hydrophobic coating 12 is evenly sprayed on the surface of the inertia-stage blade unit. During actual application, the effective side surfaces of the inlet guide section 1, the first transition section 2, the second transition section 5, and the first hydrophobic hook 3 and the second hydrophobic hook 6 where the inertia-stage blade unit actually acts can be sprayed to save the amount of the photoelectric thermal super-hydrophobic coating 12. The thickness of the photoelectric thermal super-hydrophobic coating 12 is 10-100 μm, and the surface contact angle is greater than 150 °. The hydrophobic properties of the photoelectric thermal super-hydrophobic coating 12 enable the droplets formed after the ice melts to be quickly discharged, thereby achieving the effect of avoiding secondary icing.

[0026] Preferably, micron-scale pits and nano-scale protrusions can be processed on the surface of the inertial-level blade unit by laser etching to enhance the mechanical strength of the photoelectric thermal super-hydrophobic coating 12 and solve the problem that conventional coatings are prone to peeling and failure under high-speed airflow.

[0027] Combine Figure 3 As shown, an LED honeycomb array light source 16 is arranged on top of a plurality of inertia-level blade units arranged in parallel at equal intervals. The LED honeycomb array light source 16 is triggered and started by a humidity sensor to automatically switch the light source mode according to environmental conditions, which is energy-saving and efficient.

[0028] In addition, in order to compensate for the problem of ineffective ice prevention / removal when light and heat are insufficient, the ends of the inlet guide section 1 and the outlet guide section 9 are made into semicircular structures and copper electrodes 10 are installed. An adjustable power supply with a voltage adjustment range of 0~50V is connected through the copper electrode 10, and when light and heat are insufficient, power is turned on to heat the photoelectric thermal super-hydrophobic coating 12.

[0029] Under low temperature conditions, droplets hitting the surface of the inertia-stage blade unit are prone to freezing and accumulating to form an ice layer. By evenly spraying the photoelectric thermal super-hydrophobic coating 12 on the surface of the blades and hydrophobic hooks, combined with the integrated design of photothermal (LED honeycomb array light source 16), electric heating (copper electrode 10 connected to an adjustable power supply) and super-hydrophobic (photoelectric thermal super-hydrophobic coating 12), the separator can be effectively prevented from icing and quickly de-iced.

[0030] Combine Figure 2~Figure 3 As shown, the mechanism of action of the present invention is as follows:

[0031] In high humidity marine environment, the air carrying droplets flows into the air inlet 13 between the inlet guide section 1 of adjacent inertia level blade unit, and flows out through the air outlet 15 between the outlet guide section 9 of adjacent inertia level blade unit after passing through flow channel 14. When airflow flows through the bend of inertia level blade unit, the airflow direction changes, and the droplets entrained in the air impact on the blade surface sprayed with photoelectric thermal super-hydrophobic coating 12 due to larger inertia effect, due to the hydrophobic properties and gravity of photoelectric thermal super-hydrophobic coating 12, separator is discharged downward. The first hydrophobic hook 3 and the second hydrophobic hook angle 6 can be rotated about an axis, and it is realized that the opening is adjusted according to the actual working condition, and the photoelectric thermal super-hydrophobic coating 12 shows as hydrophobic properties, prevents droplets from accumulating on the wall to form large diameter droplets and thus form a liquid film, greatly improving separation efficiency.

[0032] In low-temperature environments such as winter or polar regions, supercooled droplets hitting the surface of the inertia-level blade unit will freeze and gradually accumulate to form an ice layer. The photoelectric thermal super-hydrophobic coating 12 can absorb the light energy of natural light or the LED honeycomb array light source 16, converting the light energy into heat energy, maintaining the surface temperature above the freezing point, and the micro-nano structure processed by the photoelectric thermal super-hydrophobic coating 12 can repel water droplets and play an anti-icing role. When the light and heat are insufficient, the adjustable power supply connected by the copper electrode 10 is energized to heat the photoelectric thermal super-hydrophobic coating 12 to quickly melt the ice layer. The hydrophobic property of the photoelectric thermal super-hydrophobic coating 12 causes the water droplets melted by the ice layer to roll down quickly along the blade surface, preventing the liquid film from accumulating and producing secondary ice.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other configurations without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An anti-icing / de-icing gas-liquid separator based on a photoelectric thermal super-hydrophobic coating and a rotatable hook groove, comprising a plurality of inertia-stage blade units arranged in parallel, with a flow channel (14) formed between each two adjacent inertia-stage blade units, characterized in that: The main body of the inertia-stage blade unit is connected in sequence by an inlet guide section (1), a first transition section (2), a second transition section (5), a third transition section (8) and an outlet guide section (9) and is made into one body. The inlet guide section (1) and the outlet guide section (9) are both straight sections and are located on the same plane. The first transition section (2), the second transition section (5) and the third transition section (8) are all arc sections and form an arch structure. The first hydrophobic hook (3) is hingedly installed at the connection position between the first transition section (2) and the second transition section (5) on the outside of the arch structure. The second hydrophobic hook (6) is hingedly installed at the connection position between the second transition section (5) and the third transition section (8). The surface of the inertia-stage blade unit is evenly sprayed with a photoelectric thermal super-hydrophobic coating (12). An LED honeycomb array light source (16) is arranged on the top of the inertia-stage blade unit. A copper electrode (10) is installed at the end of the inertia-stage blade unit and is connected to an adjustable power supply.

2. The anti-icing / de-icing gas-liquid separator based on the photoelectric thermal super-hydrophobic coating and the rotatable hook groove according to claim 1, characterized in that: The connection positions of each section of the inertia stage blade unit are respectively rounded.

3. The anti-icing / de-icing gas-liquid separator based on the photoelectric thermal super-hydrophobic coating and the rotatable hook groove according to claim 1, characterized in that: The surface of the inertia-stage blade unit is processed into a micro-nano structure by laser etching.

4. The anti-icing / de-icing gas-liquid separator based on the photoelectric thermal super-hydrophobic coating and the rotatable hook groove according to claim 1, characterized in that: The first hydrophobic hook (3) and the second hydrophobic hook (6) can both rotate around the hinge by 0° to 90°, and are positioned using pins after adjusting the rotation angle.

5. The anti-icing / de-icing gas-liquid separator based on the photoelectric thermal super-hydrophobic coating and the rotatable hook groove according to claim 1, characterized in that: The photoelectric thermal super-hydrophobic coating (12) has a thickness of 10-100 μm and a surface contact angle of >150°.

6. The anti-icing / de-icing gas-liquid separator based on the photoelectric thermal super-hydrophobic coating and the rotatable hook groove according to claim 1, characterized in that: The LED honeycomb array light source (16) is triggered and started by a humidity sensor.

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