A double-channel anti-icing blade separator with arc-shaped drain hook

Abstract

A double-channel anti-icing blade separator with a circular arc hydrophobic hook relates to the technical field of separator research and development. The blade units are arranged in parallel, and the blade units are composed of a trapezoidal blade plate and an L-shaped blade plate. An inlet guide section is arranged at the bottom end of the waistline of the windward side of the trapezoidal blade plate, and the L-shaped blade plate is arranged at intervals on the upper bottom side of the trapezoidal blade plate. A first hydrophobic hook is arranged outside the angle position of the L-shaped blade plate. The end of the arm on one side of the L-shaped blade plate forms a second channel air inlet, and the arm on the other side is connected to the trapezoidal blade plate as a whole and opens a second channel air outlet, and its end is extended and a second hydrophobic hook is arranged. An outlet guide section is arranged outside the second hydrophobic hook, and a strip heating plate is embedded in the tip of the first hydrophobic hook and the waistline of the trapezoidal blade plate on the windward side and the arm of the L-shaped blade plate. The blade unit formed by the combination of the trapezoidal blade plate and the L-shaped blade plate has a double-channel structure, which improves the gas-liquid separation efficiency, and the embedded heating plate improves the applicability of cold working conditions.

Description

Technical Field

[0001] The invention relates to the technical field of separator research and development, in particular to a double-channel anti-icing blade separator with an arc hydrophobic hook. Background Art

[0002] Inertial-stage blade-type gas-liquid separators are widely used in industrial production due to their simple structure and superior performance. In particular, they are often used in gas turbines for power generation to remove small droplets entrained in the air. Their mechanism of action is as follows: when the direction of the airflow through the bend of the blade separator flow channel changes suddenly, the droplets break away from the direction of the airflow under the action of the large inertial force and hit the wall. After gathering into larger droplets, they flow out of the gas-liquid separator along the wall hydrophobic groove structure, completing the gas-liquid separation.

[0003] At present, there are many types of blade-type gas-liquid separators. According to the blade line shape, they can be divided into streamline, folded line and trapezoidal blade separators. According to whether there is a hydrophobic hook structure, they can be divided into hookless, single hook and double hook blade separators. As the requirements for the separation performance of blade separators in various fields continue to increase, the optimization of traditional inertial-level blade gas-liquid separators needs to be solved urgently. However, at this stage, most of the work on improving the performance of blade separators remains at the optimization of blade linear shape and the change of the number, size and structure of hydrophobic hooks. For example, the Chinese invention patent with announcement number CN105749628B, announcement date January 19, 2018, and name "A gas-water separation corrugated plate and separator", which uses two hookless corrugated plates and a number of connecting plates to form a double-layer hollow plate structure of hydrophobic grooves. The longer inner flow channel design of the hydrophobic groove increases the effective flow area of ​​the drainage groove to improve the hydrophobic capacity of the corrugated plate separator; the rare technical level optimization is only to cover the hydrophobic groove of the blade separator with a layer of hydrophilic coating to enhance the droplet separation ability at this position, such as the Chinese utility model patent with announcement number CN220096623U, announcement date November 28, 2023, and name "A streamlined inertia-stage blade with an embedded hydrophobic groove that can reduce flow resistance", which has a hydrophilic coating on the inner surface of the hydrophobic groove to prevent secondary entrainment.

[0004] However, the existing blade-type gas-liquid separator has limited internal flow space, and its gas-liquid separation area is mainly distributed around the hydrophobic groove structure formed by the hydrophobic hook. It is generally difficult to effectively increase the collision probability of droplets and blade walls in the gas-liquid separation area, resulting in the gas-liquid separation efficiency still needing to be improved. In addition, it is very easy to freeze under cold working conditions. The inlet guide section and the main windward surface of the blade are mostly areas that are greatly affected by the ice layer. After freezing, not only the separation performance of the blade is greatly reduced, but also the service life of the blade itself is greatly affected. Summary of the invention

[0005] In order to address the shortcomings of the background technology, the present invention provides a double-channel anti-icing blade separator with an arc hydrophobic hook. The blade unit formed by a composite of a trapezoidal blade plate and an L-shaped blade plate has a double-channel structure. The enlarged blade wall not only helps to increase the collision probability of droplets hitting the wall, but also enhances the ability to collect droplets to improve the gas-liquid separation efficiency. By embedding a heating plate, the applicability to cold working conditions is improved to effectively avoid the problem of icing.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a double-channel anti-icing blade separator with an arc hydrophobic hook, comprising a plurality of blade units arranged in parallel, a first channel being formed between each adjacent two blade units, the blade unit being composed of a trapezoidal blade plate and an L-shaped blade plate, the trapezoidal blade plate body being constructed according to the linear shape of an isosceles trapezoid except for the lower bottom, and an inlet guide section being integrally arranged at the bottom end of the waistline on the windward side, the inlet guide section being extended outwardly along the lower bottom direction of the trapezoidal blade plate, the L-shaped blade plates being spaced apart on one side of the upper bottom of the trapezoidal blade plates and the two arms thereof being respectively arranged in parallel with the two waistlines of the trapezoidal blade plates, a first hydrophobic hook being integrally arranged on the outer side of the angle position of the L-shaped blade plates, the opening of the first hydrophobic hook facing The first hydrophobic groove is formed on the windward side and its internal space, the interval between the L-shaped blade plate and the trapezoidal blade plate forms a second flow channel, a second flow channel air inlet is formed between the end of the branch arm on one side of the L-shaped blade plate adjacent to the inlet guide section and the bottom end of the waistline corresponding to the trapezoidal blade plate, the branch arm on the other side of the L-shaped blade plate is connected as a whole with the bottom end of the waistline corresponding to the trapezoidal blade plate and a second flow channel air outlet is opened, and the end of the branch arm on the other side of the L-shaped blade plate is extended and bent inward to form a second hydrophobic hook, a second hydrophobic groove is formed in the internal space of the second hydrophobic hook, an outlet guide section is integrally arranged on the outer side of the second hydrophobic hook along the opposite direction of the inlet guide section, and a strip heating plate is respectively embedded in the tip of the first hydrophobic hook, the waistline of the trapezoidal blade plate on the windward side, and the inside of the branch arm of the L-shaped blade plate.

[0007] Furthermore, an angle of 135° is formed between the center line of the second flow channel air inlet and the inlet guide section, and between the center line of the second flow channel air outlet and the outlet guide section, and the second flow channel air outlet is consistent in size with the second flow channel air inlet.

[0008] Furthermore, a gas rectifying sawtooth is integrally provided on the inner wall of the support arm on the other side of the L-shaped blade plate near the position of the first hydrophobic hook, and the sawtooth structures of the gas rectifying sawtooth are arranged equidistantly.

[0009] Furthermore, the trapezoidal blade plate and the L-shaped blade plate are integrally manufactured by using 3D printing technology, and all bending positions of the blade units are chamfered.

[0010] Furthermore, a U-shaped heating plate is packaged and fixedly arranged at the end of the inlet guide section.

[0011] Furthermore, the adjacent U-shaped heating plate positions on both side walls of the inlet guide section are respectively coated with a hydrophobic coating.

[0012] Furthermore, the outer wall of the waistline on the windward side of the trapezoidal blade plate and the inner and outer walls of the upper bottom and the waistline on the other side are coated with a hydrophilic coating respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the L-shaped blade plate of the present invention is optimized by a broken line blade separator, and in addition, a trapezoidal blade plate structure is added to the inner side of the L-shaped blade plate, and a second flow channel is formed between the two. This structural form can not only increase the blade wall area, but also increase the collision probability between the droplets entrained in the gas and the blade wall to improve the gas-liquid separation efficiency, and form a double-channel structure in combination with the first flow channel between two adjacent blade units, thereby increasing the effective hydrophobic area of ​​the first hydrophobic groove and the second hydrophobic groove, and improving the ability of the hydrophobic groove to collect fine droplets, thereby further improving the hydrophobic ability of the separator. The blade unit is integrally processed by 3D printing technology, and rounded corners are performed at all bending positions. The principle not only avoids the scaling hazard of traditional welding materials after oxidation, but also reduces the flow resistance of the overall structure to the air. By embedding heating plates to improve the applicability of cold working conditions, part of the droplets impacting the windward side wall can be evaporated to improve the gas-liquid separation performance, and the icing problem of the separator under cold working conditions is effectively avoided. A hydrophobic coating is applied to the end of the inlet guide section of the trapezoidal blade plate to ensure that the droplets do not gather at the edge of the air inlet to condense and freeze, and to change the movement direction of the droplets in this area. A hydrophilic coating is applied to the area except the windward surface of the trapezoidal blade plate, which is conducive to the droplets impacting the blade wall to gather into large droplets and then be discharged. The overall system has the characteristics of high gas-liquid separation efficiency, anti-icing, easy processing and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 1 is a schematic diagram of the top view of the blade unit of the blade separator of the present invention;

[0015] Figure 2 is an axonometric schematic diagram of a blade separator of the present invention;

[0016] Figure 3 This is a gas-liquid separation principle diagram of the blade separator of the present invention;

[0017] Figure 4 yes Figure 3 An enlarged schematic diagram of part A.

[0018] In the figure: 1-inlet guide section; 2-first flow channel; 3-second flow channel; 4-first hydrophobic hook; 5-first hydrophobic groove; 6-gas rectifying serrations; 7-second hydrophobic hook; 8-second hydrophobic groove; 9-outlet guide section; 10-hydrophilic coating; 11-hydrophobic coating; 12-second flow channel air inlet; 13-second flow channel air outlet; 14-trapezoidal blade plate; 15-L-shaped blade plate; 16-strip heating plate; 17-U-shaped heating plate. DETAILED DESCRIPTION

[0019] The technical solution 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 of 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.

[0020] like Figure 1-2As shown, a double-channel anti-icing blade separator with a circular arc hydrophobic hook includes a plurality of blade units arranged in parallel, preferably arranged at equal intervals, and a first flow channel 2 is formed between each two adjacent blade units. This part is a conventional form of an existing inertial-stage blade-type gas-liquid separator. The innovation of the present invention is that the blade unit is composed of a trapezoidal blade plate 14 and an L-shaped blade plate 15. The blade unit is preferably made of a single piece by 3D printing technology, which is simpler to prepare. Further, all the bending positions of the blade unit (including the connection node between the inlet guide section 1 and the main body of the trapezoidal blade plate 14, the connection node between the waistline on both sides of the main body of the trapezoidal blade plate 14 and the upper bottom, the connection node between the two arms of the L-shaped blade plate 15 and the first hydrophobic hook 4, and the connection node between the outlet guide section 9 and the second hydrophobic hook) are chamfered, thereby effectively reducing the influence of flow resistance on separation efficiency. Among them, the main body of the trapezoidal blade plate 14 is constructed according to the linear shape of an isosceles trapezoid except the lower bottom. A hydrophilic coating 10 can be coated on the outer wall of the waistline on the windward side of the trapezoidal blade plate 14 and the inner and outer walls of the upper bottom and the other side waistline, respectively, which helps to better discharge the droplets after they gather into large droplets, and an inlet guide section 1 is integrally provided at the bottom end of the waistline on the windward side of the trapezoidal blade plate 14. The inlet guide section 1 is extended along the lower bottom direction of the trapezoidal blade plate 14. The end of the inlet guide section 1 is preferably polished into a semicircular structure, and a U-shaped heating plate 17 can be packaged and fixed at the end to avoid condensation and icing at the edge of the air intake. A hydrophobic coating 11 can also be coated on the two side walls of the inlet guide section 1 adjacent to the U-shaped heating plate 17 to avoid the droplets from gathering at the edge of the air intake and help change the movement direction of the droplets in the area, so that the droplets are ejected to the middle position of the second flow channel air inlet 12 between the two inlet guide sections 1. The L-shaped blade plate 15 is arranged at intervals on one side of the upper bottom of the trapezoidal blade plate 14, and its two arms are arranged in parallel with the two waistlines of the trapezoidal blade plate 14, and a first hydrophobic hook 4 is integrally arranged outside the angle position of the L-shaped blade plate 15, and the first hydrophobic hook 4 opens toward the windward side and its internal space forms a first hydrophobic groove 5. The interval between the L-shaped blade plate 15 and the trapezoidal blade plate 14 forms a second flow channel 3, and the end of the arm of the L-shaped blade plate 15 on one side adjacent to the inlet guide section 1 and the bottom of the waistline corresponding to the trapezoidal blade plate 14 form a second flow channel air inlet 12, and the arm of the other side of the L-shaped blade plate 15 is connected to the bottom of the waistline corresponding to the trapezoidal blade plate 14 as a whole and a second flow channel air outlet 13 is opened. Among them, the center line of the second flow channel air inlet 12 and the inlet guide section 1 and the center line of the second flow channel air outlet 13 and the outlet guide section 9 are both 135°, and the second flow channel air outlet 13 is consistent in size with the second flow channel air inlet 12, which is the most preferred.The end of the arm on the other side of the L-shaped blade plate 15 is extended and bent inward to set a second hydrophobic hook 7, and the internal space of the second hydrophobic hook 7 forms a second hydrophobic groove 8. The outlet guide section 9 is integrally arranged on the outside of the second hydrophobic hook 7 in the opposite direction of the inlet guide section 1, and the end of the outlet guide section 9 is also preferably polished into a semicircular structure. A gas rectifying serration 6 can also be integrally arranged on the inner wall of the arm on the other side of the L-shaped blade plate 15 near the position of the first hydrophobic hook 4. The serration structure of the gas rectifying serration 6 is arranged equidistantly, which helps to change the flow direction of the gas and form turbulence to avoid scaling in this area after long-term use. In addition, the tip of the first hydrophobic hook 4 and the waistline of the trapezoidal blade plate 14 on the windward side and the inside of the arm of the L-shaped blade plate 15 are respectively embedded with a strip heating plate 16. The strip heating plate 16 can be directly embedded in the structure in the process of 3D printing by using a segmented setting, and the U-shaped heating plate 17 is used together with an external power supply to generate heat energy.

[0021] Combination Figure 3-4 As shown, the working principle of the present invention is as follows: the gas mixed with droplets enters the first flow channel 2 area from between the inlet guide sections 1 of two adjacent blade units, and is diverted at the second flow channel air inlet 12 to allow part of the gas mixed with droplets to enter the second flow channel 3. The droplets in the gas have relatively large inertial force. When the flow direction of the gas changes at the tortuosity of the trapezoidal blade plate 14 and the L-shaped blade plate 15, the droplets collide and gather on the wall area of ​​the trapezoidal blade plate 14 coated with the hydrophilic coating 10 to form large droplets, which are discharged along the wall under the action of gravity. The first hydrophobic hook 4 and the second hydrophobic hook 7 respectively help to separate and store the large droplets gathered in the first flow channel 2 and the second flow channel 3. The gas separated from the first flow channel 2 and the second flow channel 3 is collected at the second flow channel air outlet 13 and then discharged between the outlet guide sections 9 of the two adjacent blade units, completing the gas-liquid two-phase flow separation. During this period, the hydrophilic coating 10 coated on the trapezoidal blade plate 14 exhibits hydrophilic properties, which is conducive to the droplets impacting the blade wall to gather and form large droplets, while the hydrophobic coating 11 coated on the two side walls of the end of the inlet guide section 1 can ensure that the droplets do not gather on the air intake side, which helps to change the movement direction of the droplets in this area. The setting of the U-shaped heating plate 17 can prevent the condensation and icing of the inlet guide section 1 under cold conditions. In addition, the strip heating plate 16 embedded in the first hydrophobic hook 4, the trapezoidal blade plate 14 and the L-shaped blade plate 15 can heat and evaporate the droplets that impact and gather on the blade wall in this area, thereby improving the overall gas-liquid separation efficiency and further avoiding the icing problem of the separator under cold conditions.

[0022] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms of assembly without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-channel anti-icing blade separator with a circular arc hydrophobic hook, comprising a plurality of blade units arranged in parallel, wherein a first channel (2) is formed between each two adjacent blade units, and characterized in that: The blade unit is composed of a trapezoidal blade plate (14) and an L-shaped blade plate (15). The main body of the trapezoidal blade plate (14) is constructed in the shape of an isosceles trapezoid except for the lower bottom. The lower end of the waistline on the windward side is integrally provided with an inlet guide section (1). The inlet guide section (1) extends outward along the lower bottom direction of the trapezoidal blade plate (14). The L-shaped blade plate (15) is arranged at intervals on one side of the upper bottom of the trapezoidal blade plate (14) and its two arms are respectively arranged parallel to the two waistlines of the trapezoidal blade plate (14). A first hydrophobic hook (4) is integrally provided on the outer side of the angle position of the L-shaped blade plate (15). The opening of the first hydrophobic hook (4) faces the windward side and the internal space thereof forms a first hydrophobic groove (5). The interval between the L-shaped blade plate (15) and the trapezoidal blade plate (14) forms a second flow channel (3). A second flow channel air inlet (12) is formed between the end of a support arm on one side of the L-shaped blade plate (15) adjacent to the inlet guide section (1) and the bottom end of the waistline corresponding to the trapezoidal blade plate (14); the support arm on the other side of the L-shaped blade plate (15) is connected to the bottom end of the waistline corresponding to the trapezoidal blade plate (14) as a whole and a second flow channel air outlet (13) is provided; the end of the support arm on the other side of the L-shaped blade plate (15) is extended outward and bent inward to form a second hydrophobic hook (7); a second hydrophobic groove (8) is formed in the internal space of the second hydrophobic hook (7); an outlet guide section (9) is integrally provided on the outer side of the second hydrophobic hook (7) in the opposite direction of the inlet guide section (1); a strip heating plate (16) is respectively embedded in the tip of the first hydrophobic hook (4), the waistline of the trapezoidal blade plate (14) located on the windward side, and the inside of the support arm of the L-shaped blade plate (15).

2. A double-channel anti-icing blade separator with arc-shaped hydrophobic hook according to claim 1, characterized in that: An angle of 135° is formed between the center line of the second flow channel air inlet (12) and the inlet guide section (1), and between the center line of the second flow channel air outlet (13) and the outlet guide section (9), and the second flow channel air outlet (13) and the second flow channel air inlet (12) are of the same size.

3. A double-channel anti-icing blade separator with arc-shaped hydrophobic hook according to claim 1 or 2, characterized in that: A gas rectifying sawtooth (6) is integrally provided on the inner wall of the support arm on the other side of the L-shaped blade plate (15) adjacent to the first hydrophobic hook (4), and the sawtooth structures of the gas rectifying sawtooth (6) are arranged at equal distances.

4. A double-channel anti-icing blade separator with arc-shaped hydrophobic hook according to claim 3, characterized in that: The trapezoidal blade plate (14) and the L-shaped blade plate (15) are integrally manufactured using 3D printing technology, and all bending positions of the blade units are chamfered.

5. The double-channel anti-icing blade separator with arc-shaped hydrophobic hook according to claim 1, characterized in that: A U-shaped heating plate (17) is packaged and fixedly arranged at the end of the inlet guide section (1).

6. A double-channel anti-icing blade separator with arc-shaped hydrophobic hook according to claim 5, characterized in that: The positions of the U-shaped heating plates (17) adjacent to the two side walls of the inlet guide section (1) are respectively coated with a hydrophobic coating (11).

7. A double-channel anti-icing blade separator with arc-shaped hydrophobic hooks according to claim 6, characterized in that: The trapezoidal blade plate (14) is coated with a hydrophilic coating (10) on the outer wall of the waistline on the windward side and the upper bottom and the inner and outer walls of the waistline on the other side.

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