Control fluid unit and flow guiding device

Abstract

The present invention relates to a control fluid unit and a diversion device. The control fluid unit includes a box body, the box body has an air inlet panel and an air outlet panel arranged opposite to each other. At least one air inlet hole is opened on the air inlet panel, and a plurality of air outlet holes are evenly arranged on the air outlet panel, and the total area of each air outlet hole is greater than the total area of each air inlet hole. The present invention can make the flow field in the pipeline cross-section evenly distributed, avoiding the consequences of local scouring being too fast or air flow being disordered caused by uneven flow field.

Description

Technical Field

[0001] The present invention relates to the field of gas transmission technology, and particularly to a control fluid unit and a diversion device. Background Art

[0002] Many industrial productions generate a large amount of industrial gases. Some of these industrial gases can be directly discharged to meet environmental protection requirements, some need waste heat recovery, some need dust removal, and some need to carry out physical or chemical reactions to remove harmful components, etc. These large amounts of industrial gases require pipelines with relatively large cross-sectional dimensions during transmission. At the same time, there are multiple direction changes during gas transportation, resulting in uneven airflows in the pipeline, and phenomena such as stratification, turbulence, and even eddies may occur. These industrial gases have different uses, and the subsequent equipment has different usage requirements for them. Generally speaking, it is an ideal state to enter the subsequent equipment uniformly within the flow cross-section.

[0003] In industrial production, there are many ways to transport industrial gases. In many cases, rectangular pipelines are used for large-flow gas transportation. It is widely used because of its easy fabrication and uniform airflow distribution characteristics. However, when the rectangular pipeline turns, the uniform flow field of the airflow will be broken, which can cause local erosion of the equipment and turbulence of the airflow, affecting the use and treatment of the gas. To prevent the phenomenon of turbulence or even eddies when the airflow changes direction, the usual method is to set guide plates or baffle plates in the pipeline to restrict the flow direction of the airflow, so that the airflow passes through the bend in the form of plug flow, which has a guiding effect, but it cannot ensure that the flow rate within the pipeline cross-section is evenly distributed.

[0004] For example, the usual practice of equipment manufacturers nowadays is as Figure 1 shown: When the airflow passes through the pipeline elbow, restricted by the guide plate 01, the airflow can basically maintain its original flow field state.

[0005] With this method of setting the guide plate 01 at the pipeline elbow, the airflow can basically maintain its original flow field state, but the uneven flow field phenomenon within the pipeline cross-section will not be improved; after adding the guide plate 01, the airflow is stratified, and new small-scale turbulences can be generated within the layer after passing through the elbow. This technology cannot make the airflow within the pipeline cross-section evenly distributed.

[0006] There is also a flue gas particle separation device in the prior art, such as Figure 2 and Figure 3As shown in the figure, a dry separation device for converter flue gas particles is proposed. In this technology, a shell is arranged at the end of the vaporization cooling flue, and a flue gas particle separation device is arranged inside the shell. The separation device consists of multiple layers of parallel inclined plates 02 spaced at a certain distance; when the flue gas flows through this device, it is divided into multiple flat plug flows, which can quickly settle the flue gas particles and can prevent explosion of the flue gas. By setting appropriate inclined plate spacing and inclination angles, sub-millimeter-level flue gas particles can be quickly captured.

[0007] However, the disadvantage of the above flue gas particle separation device is that when the dust-containing flue gas flows through multiple layers of settling inclined plates, the flow velocity may not be uniform at various places in the entire cross-section, and there may be a phenomenon of too fast local flow velocity, resulting in difficulty in settling the dust in the flue gas and unable to achieve a satisfactory flue gas particle separation effect.

[0008] In the prior art, there is also a flue gas diversion system and a waste heat boiler (a Chinese utility model patent with the publication number CN210141578U and the publication date of March 13, 2020), as Figure 4 shown in the figure, a diversion device for the air inlet of a waste heat boiler is proposed. In this technology, a diversion mechanism 04 (including a diversion plate and a rotation mechanism) is arranged in the air inlet flue 03 of the waste heat boiler, and multiple flow velocity measurement points are arranged in the inlet cross-section of the waste heat boiler 05. According to the values of each flow velocity measurement point, the angle of the corresponding diversion plate is adjusted through the rotation mechanism arranged outside the flue, and finally the flow velocity in the air inlet cross-section is roughly uniform.

[0009] However, the above flue gas diversion system has the following disadvantages: (1) Due to the limitation of the temperature resistance range of the flow sensor, the application range of this diversion adjustment system has certain limitations. (2) The diversion plates are arranged horizontally in the flue cross-section, and the flow velocity of the incoming flue gas can be adjusted in the longitudinal direction, but the adjustment effect in the horizontal direction is very limited. (3) This diversion device requires supporting control systems such as data acquisition, data analysis, and automatic adjustment, increasing the investment and operating costs.

[0010] Therefore, based on years of experience and practice in the relevant industry, the inventor of the present invention proposes a control fluid unit and a diversion device to overcome the defects of the prior art. Summary of the Invention

[0011] The purpose of the present invention is to provide a control fluid unit and a diversion device, which can make the flow field in the pipeline cross-section evenly distributed, avoiding the consequences of too fast local erosion or chaotic air flow caused by uneven flow field.

[0012] The purpose of the present invention can be achieved by the following technical solutions:

[0013] The present invention provides a fluid control unit, comprising a box body; the box body has an air inlet panel and an air outlet panel which are oppositely arranged, at least one air inlet hole is formed in the air inlet panel, a plurality of air outlet holes which are evenly distributed are formed in the air outlet panel, and the total area of each air outlet hole is larger than the total area of each air inlet hole.

[0014] In a preferred embodiment of the present invention, the number of air outlet holes is larger than the number of air inlet holes.

[0015] In a preferred embodiment of the present invention, the shapes and sizes of the air outlet holes on the air outlet panel are the same.

[0016] The present invention further provides a diversion device, comprising a plurality of the above-mentioned fluid control units spliced with each other; the air inlet panels of each fluid control unit are all located on the same side of the diversion device and are spliced to form an air inlet wall, and the air outlet panels of each fluid control unit are all located on the same side of the diversion device and are spliced to form an air outlet wall.

[0017] In a preferred embodiment of the present invention, the box body is a hexahedron structure.

[0018] In a preferred embodiment of the present invention, the box body is a rectangular body structure, and a plurality of fluid control units are arranged in a single horizontal row or in a single vertical column.

[0019] In a preferred embodiment of the present invention, the box body is a rectangular body structure, and a plurality of fluid control units are arranged in a rectangular array of multiple layers and multiple columns.

[0020] In a preferred embodiment of the present invention, a plurality of fluid control units are arranged in a single-row arc arrangement.

[0021] In a preferred embodiment of the present invention, a plurality of fluid control units are arranged in multiple layers along the circumferential direction to form a cylindrical shape.

[0022] In a preferred embodiment of the present invention, the diversion device further comprises an upper water cooling ring pipe and a lower water cooling ring pipe which are arranged at intervals up and down, and a plurality of water cooling pipes which are connected between the upper water cooling ring pipe and the lower water cooling ring pipe and are arranged at circumferential intervals; a plurality of limiting blocks are fixedly arranged at intervals from top to bottom on each water cooling pipe, and the box body of the fluid control unit is clamped between two adjacent water cooling pipes and is connected with the limiting blocks.

[0023] In a preferred embodiment of the present invention, the bottom surface of the box body of each fluid control unit is inclined downward from the air outlet panel to the air inlet panel.

[0024] In a preferred embodiment of the present invention, the shapes and sizes of the boxes of each control fluid unit are the same; the number of air inlet holes of each control fluid unit is the same, the sizes of the air inlet holes of each control fluid unit located on the same layer are the same, and the sizes of the air inlet holes of each control fluid unit gradually decrease from top to bottom; the number and size of the air outlet holes of each control fluid unit are the same.

[0025] As described above, for the control fluid unit and the diversion device of the present invention, by respectively opening air inlet holes and air outlet holes on the air inlet panel and the air outlet panel, and ensuring that the total area of each air outlet hole is larger than the total area of each air inlet hole, the entire control fluid unit forms a double-layer diversion structure; when industrial gas passes through the control fluid unit, it successively passes through the air inlet holes and the air outlet holes, and the air flow undergoes two pressure reductions, so that the flow velocity in the pipeline cross-section is evenly distributed, avoiding local over-scouring of subsequent equipment caused by uneven flow fields, preventing the occurrence of air flow disorders and eddy current phenomena, effectively solving the problems of uneven flow velocity, air flow stratification, disorder and even eddy current phenomena of industrial gas during transmission, and meeting the gas use and treatment requirements of subsequent equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0027] Figure 1 : Schematic structural diagram of a pipeline elbow with a diversion function in the prior art.

[0028] Figure 2 : Schematic structural diagram of a flue gas particle separation device in the prior art.

[0029] Figure 3 : For Figure 2 Schematic structural diagram along direction A in

[0030] Figure 4 : Schematic structural diagram of a flue gas diversion system and a waste heat boiler in the prior art.

[0031] Figure 5 : Schematic structural diagram of the control fluid unit provided by the present invention.

[0032] Figure 6 : Schematic diagram of the horizontal single-row arrangement in the first structure of the diversion device provided by the present invention.

[0033] Figure 7 : Schematic structural diagram of the longitudinal single-column arrangement in the first structure of the diversion device provided by the present invention.

[0034] Figure 8 : Schematic diagram of the second structure of the diversion device provided by the present invention.

[0035] Figure 9 : Schematic structural diagram of the third structure of the flow guiding device provided by the present invention.

[0036] Figure 10 : Schematic structural diagram of the fourth structure of the flow guiding device provided by the present invention.

[0037] Figure 11 : is Figure 10 top view of

[0038] Figure 12 : Schematic structural diagram of the flow guiding device provided by the present invention when applied to the end of the vaporization cooling flue of a steelmaking converter.

[0039] Explanation of the reference numerals in the drawings:

[0040] Prior art:

[0041] 01, flow guiding plate; 02, parallel inclined plate; 03, air inlet flue; 04, flow guiding mechanism; 05, waste heat boiler.

[0042] The present invention:

[0043] 1, control fluid unit;

[0044] 11, box body; 12, air inlet panel; 121, air inlet hole; 13, air outlet panel; 131, air outlet hole;

[0045] 2, flow guiding device;

[0046] 21, air inlet wall; 22, air outlet wall;

[0047] 23, upper water cooling ring pipe; 24, lower water cooling ring pipe; 25, water cooling pipe; 26, limit block;

[0048] 3, vaporization cooling flue of steelmaking converter;

[0049] 4, outer shell; 41, hanging pipe; 42, header pipe. Specific embodiments

[0050] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0051] As Figure 5 shown, this embodiment provides a control fluid unit 1, including a box body 11. The box body 11 has an air inlet panel 12 and an air outlet panel 13 arranged oppositely. At least one air inlet hole 121 is opened on the air inlet panel 12, and a plurality of uniformly distributed air outlet holes 131 are opened on the air outlet panel 13. Moreover, the total area of each air outlet hole 131 is greater than the total area of each air inlet hole 121.

[0052] The number of the air inlet holes 121 and the air outlet holes 131 can be determined according to actual needs. The shapes of the air inlet holes 121 and the air outlet holes 131 can be various shapes such as circular, square, oblong or rectangular, etc., which are specifically determined according to needs. As long as the total area of the air outlet holes 131 is greater than the total area of the air inlet holes 121, it can ensure that the air flow can be depressurized twice when passing through the air inlet panel 12 and the air outlet panel 13 successively. For example, in this embodiment, as Figure 5 shown, there is 1 air inlet hole 121 opened on the air inlet panel 12, and the shape of the air inlet hole 121 is oblong. There are 18 air outlet holes 131 opened on the air outlet panel 13, and the shape of the air outlet hole 131 is circular. The air outlet holes 131 on the air outlet panel 13 should be evenly arranged to ensure that the flow velocities of the air outlet holes 131 are approximately equal.

[0053] Thus, the control fluid unit 1 in this embodiment forms a double-layer diversion structure by respectively opening the air inlet holes 121 and the air outlet holes 131 on the air inlet panel 12 and the air outlet panel 13, and ensuring that the total area of the air outlet holes 131 is greater than the total area of the air inlet holes 121. When the industrial gas passes through the control fluid unit 1, it passes through the air inlet holes 121 and the air outlet holes 131 in sequence. The air flow is depressurized twice, and the flow velocity in the pipeline cross-section is evenly distributed, avoiding local over-scouring of subsequent equipment caused by uneven flow fields, preventing the air flow from becoming disordered and eddy current phenomena, effectively solving the problems of uneven flow velocity, air flow stratification, disorder and even eddy current phenomena of industrial gas during the transmission process, and meeting the gas use and treatment requirements of subsequent equipment.

[0054] Preferably, the number of the air outlet holes 131 is greater than the number of the air inlet holes 121 to ensure that the entire flow field is more uniform after the air flow flows out and diffuses through the air outlet holes 131. The shapes and sizes of the air outlet holes 131 on the air outlet panel 13 are the same, which is convenient for processing and manufacturing and can ensure that the flow velocities of the air outlet holes 131 are more uniform. In addition, since the gas flow velocity at the air inlet holes 121 is relatively high and the erosion is relatively serious, the air inlet panel 12 needs to be made of special high-strength materials, such as heat-resistant steel, stainless steel or wear-resistant steel, etc.

[0055] Furthermore, as Figures 5 to 12 shown, this embodiment further provides a diversion device 2, which includes a plurality of the above-mentioned control fluid units 1 spliced with each other. The air inlet panels 12 of the control fluid units 1 are all located on the same side of the diversion device 2 and are spliced to form an air inlet wall 21, and the air outlet panels 13 of the control fluid units 1 are all located on the same side of the diversion device 2 and are spliced to form an air outlet wall 22.

[0056] The entire diversion device 2 can form a diversion wall in various structural forms after splicing and combining multiple control fluid units 1, and can be set at positions such as inside an industrial gas transmission pipeline, the end of the pipeline, or the inlet end of subsequent equipment; when gas flows through this diversion wall, the gas passes through the holes in the double-layer wall formed by the air inlet wall 21 and the air outlet wall 22, and the pressure undergoes two decompressions, achieving the effect of uniform flow velocity at the air outlet holes 131, and the flow field within the pipeline cross-section is evenly distributed; it avoids the phenomenon of serious local erosion, air flow stratification, turbulence, and even eddy currents caused by the change of direction of the gas transmission pipeline, and there is also a potential risk of combustion and explosion when the transported medium is high-temperature flue gas. This technology can provide a better flow field state for subsequent gas use or treatment, and the entire diversion device 2 does not require additional power energy, has a simple structure and low cost, and is an environmentally friendly structure.

[0057] More specifically, the shape of the box body 11 in the control fluid unit 1 and the shape of the entire diversion device 2 formed by assembly can be determined according to the cross-sectional shape of the transmission pipeline, the cross-sectional shape at the end of the pipeline or the inlet end of subsequent equipment, etc., with strong flexibility. For easier splicing and assembly, the box body 11 in the control fluid unit 1 is preferably a hexahedron structure.

[0058] For example, the diversion device 2 can adopt the following several structural forms:

[0059] The first type: As Figure 6 and Figure 7 shown, the box body 11 is a rectangular structure, and multiple control fluid units 1 are arranged in a single row horizontally as shown in Figure 6 or arranged in a single column vertically as shown in Figure 7 , which can evenly distribute the air flow in the linear direction.

[0060] The second type: As Figure 8 shown, the box body 11 is a rectangular structure, and multiple control fluid units 1 are arranged in a rectangular array of multiple layers and multiple columns to form a diversion wall with a rectangular cross-section, which can evenly distribute the air flow in a rectangular pipeline.

[0061] The third type: Multiple control fluid units 1 are arranged in a single-row arc to form an arc-shaped diversion wall, which can evenly distribute the air flow in the arc direction.

[0062] In this case, it can be carried out according to Figure 9As shown, the box body 11 has a straight quadrangular prism structure, and the bottom surface of the straight quadrangular prism is an isosceles trapezoid. The air inlet panel 12 and the air outlet panel 13 are formed on two of the relatively arranged side surfaces in the straight quadrangular prism structure (i.e., the two side surfaces adjacent to the upper base and the lower base of the isosceles trapezoid); the other two relatively arranged side surfaces in the straight quadrangular prism structure (i.e., the two side surfaces adjacent to the two waists of the isosceles trapezoid) are used for splicing with the corresponding side surfaces in the adjacent straight quadrangular prism structure. At this time, the flow dividing wall assembled by multiple control fluid units 1 is approximately arc-shaped. Of course, in this case, the air inlet panel 12 and the air outlet panel 13 can also be directly designed as arc-shaped surfaces and then spliced in sequence to form an arc-shaped flow dividing wall.

[0063] The fourth type: As Figures 10 to 12 shown, multiple control fluid units 1 are arranged in multiple layers along the circumferential direction to enclose a cylindrical shape, forming a cylindrical flow dividing wall. At this time, the air inlet panel 12 of each control fluid unit 1 is located inside the guiding device 2, and the air outlet panel 13 of each control fluid unit 1 is located outside the guiding device 2. The air flow is evenly discharged outside the cylinder after two pressure reductions inside the cylinder, and the function of evenly distributing the air flow can be realized.

[0064] In this case, in order to facilitate installation and maintenance more and improve the service life of the control fluid unit 1, the guiding device 2 further includes an upper water cooling ring pipe 23 and a lower water cooling ring pipe 24 arranged at intervals up and down, and a plurality of water cooling pipes 25 connected between the upper water cooling ring pipe 23 and the lower water cooling ring pipe 24 and arranged at circumferential intervals. A plurality of limiting blocks 26 are fixedly arranged at intervals from top to bottom on each water cooling pipe 25, and the box body 11 of the control fluid unit 1 is clamped between two adjacent water cooling pipes 25 and connected to the limiting blocks 26.

[0065] Specifically, the water cooling pipes 25 are evenly arranged along the circumferential direction. The water cooling pipes 25 are interconnected with the upper water cooling ring pipe 23 and the lower water cooling ring pipe 24, and circulating cooling water is introduced into the interior, which can cool down each control fluid unit 1 in the guiding device 2. When applied to the situation where the conveying medium is high-temperature flue gas, it can play a better protective role for the control fluid unit 1 and extend its service life. It can be understood that the water cooling pipes 25 are generally circular pipes. The side surface of the box body 11 of the control fluid unit 1 close to the water cooling pipes 25 has a partial arc surface, which can be closely attached to the water cooling pipes 25 to ensure that there are no gaps between the control fluid units 1 after being fixed to the water cooling pipes 25, and the air flow only enters from the air inlet holes 121. Generally, the limiting blocks 26 are welded to the water cooling pipes 25, and the box body 11 of the control fluid unit 1 and the limiting blocks 26 are fixed by welding. Compared with directly welding the control fluid units 1 together, this method is not only convenient for assembly and splicing but also convenient for later maintenance.

[0066] Preferably, the bottom surface of the box body 11 of each control fluid unit 1 is inclined downward from the air outlet panel 13 to the air inlet panel 12, which is more convenient for the flue gas particles to slide down automatically and improves the separation effect of the flue gas particles. The specific inclination angle can be determined according to actual needs. Generally, the angle between the bottom plate of the box body 11 and the horizontal plane is 5-70°. Generally, the limiting block 26 is a rectangular plate body. One end of the limiting block 26 is welded to the water-cooled pipe 25. The plate surface direction of the limiting block 26 is preferably placed at the same inclination angle as the bottom surface of the box body 11. In this way, when installing each control fluid unit 1, only need to place each box body 11 between adjacent water-cooled pipes 25 and ensure that the bottom surface of the box body 11 is flush with the plate surface of the limiting block 26, and then weld the box body 11 and the limiting block 26. The operation is simple. Moreover, when the inclination angles of the bottom surface of the box body 11 and the plate surface of the limiting block 26 are the same, the weld seam is the longest during their welding, which is more convenient for welding and more firm.

[0067] Furthermore, before the gas passes through the diversion wall composed of multiple layers and columns of control fluid units 1, the flow field is uneven. In order to ensure that the flow velocities of the air outlet holes 131 are consistent, the sizes of the air inlet holes 121 of the control fluid units 1 in the area with high flow velocity should be designed to be slightly smaller, and the sizes of the air inlet holes 121 of the control fluid units 1 in the area with low flow velocity should be designed to be slightly larger. Moreover, the sizes and arrangements of the air outlet holes 131 of the control fluid units 1 in the same diversion wall are preferably the same to ensure that after the flue gas is discharged and diffused through the air outlet holes 131, the flow field is more uniform. Therefore, preferably, the shapes and sizes of the box bodies 11 of each control fluid unit 1 are the same; the numbers of the air inlet holes 121 of each control fluid unit 1 are the same, the sizes of the air inlet holes 121 of each control fluid unit 1 located in the same layer are the same, and the sizes of the air inlet holes 121 of each control fluid unit 1 gradually decrease from top to bottom; the numbers and sizes of the air outlet holes 131 of each control fluid unit 1 are the same to achieve approximately equal flue gas flow velocities at each air outlet hole 131.

[0068] In a specific example, such as Figure 10 and Figure 12As shown, a closed space structure is provided at the end of the gasification cooling flue 3 of the steelmaking converter, and the closed space is formed by the internal space of the shell 4 of the sedimentation device. An upper water-cooling ring pipe 23 is provided at the upper part of the airtight space, and the upper water-cooling ring pipe 23 is welded to the flange and connected to the upper part of the shell 4. A plurality of water-cooling pipes 25 are welded uniformly circumferentially on the upper water-cooling ring pipe 23, and a limiting block 26 is welded on each water-cooling pipe 25 at a certain interval. Multiple layers of control fluid units 1 are welded between the plurality of water-cooling pipes 25 through the limiting blocks 26 to form a cylindrical diverter wall; the lower end of the water-cooling pipe 25 is welded to the lower water-cooling ring pipe 24. Generally, in practical applications, the upper water-cooling ring pipe 23 is connected to two circles of hanging pipes 41 for water cooling on the outside of the water-cooling pipe 25, and two annular header pipes 42 are provided at the lower part of the shell 4. The two header pipes 42 are respectively connected to the two circles of hanging pipes 41 to water-cool the corresponding parts in the shell 4. When designing the dimensions of the control fluid unit 1, it should be ensured that the flue gas is in a deceleration process when entering the air inlet 121 to ensure the decompression effect.

[0069] In this example, the upper end of the shell 4 is connected to the end of the vaporization cooling flue 3 of the steel-making converter. The high-temperature flue gas of the converter is discharged from the end of the flue and enters the closed space structure. The high-temperature flue gas flows in from the air inlet 121 of the control fluid unit 1 and flows out from the air outlet 131. After the wind pressure drops twice, it is discharged at a uniform speed to meet the subsequent flue gas treatment.

[0070] Of course, the shapes of the multiple control fluid units 1 in the specific guide device 2 and the shape of the guide wall assembled by splicing can be determined according to needs. The shapes and sizes of the control fluid units 1 in the same guide device 2 can be the same or different, all depending on the distribution of the actual flow field of the industrial gas. This embodiment is only for illustration.

[0071] In summary, the control fluid unit 1 in this embodiment can be a six-sided box structure, with through holes on two of its faces, one being the air inlet face and the other being the air outlet face, and the sum of the cross-sectional areas of the air outlet holes 131 is greater than the sum of the cross-sectional areas of the air inlet holes 121. The control fluid unit 1 is a double-wall structure, and when the airflow passes through the control fluid unit 1, it is equivalent to passing through two walls with holes. The pressure and flow rate are redistributed twice, and the airflow with a uniform flow field is delivered, which prevents the airflow from being stratified, turbulent or eddy during delivery, and ensures the effect of the later use and treatment of the gas; when the delivery medium is high-temperature flue gas, it can prevent the occurrence of combustion and explosion.

[0072] The control fluid unit 1 can be used alone, or in a single layer or single column, or combined in multiple layers and multiple columns, such as linear, arc-shaped, rectangular or cylindrical, etc., with stronger flexibility and versatility. Multiple control fluid units 1 can be combined into diversion walls with various cross-sectional shapes (such as linear, arc-shaped, rectangular or cylindrical shapes, etc.), and the formed diversion device 2 can output gas with a uniform flow field to meet the requirements of users for the use of gas.

[0073] The above are only schematic specific implementation manners of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A diversion device, characterized in that, Comprising a plurality of control fluid units spliced with each other; The control fluid unit includes a box body; the box body has an air inlet panel and an air outlet panel arranged opposite to each other. At least one air inlet hole is opened on the air inlet panel, and a plurality of air outlet holes are uniformly arranged on the air outlet panel, and the total area of each air outlet hole is greater than the total area of each air inlet hole; the control fluid unit constitutes a double-layer diversion structure, and the air flow can undergo two pressure drops when passing through the air inlet panel and the air outlet panel in sequence; the air inlet panels of each control fluid unit are all located on the same side of the diversion device and are spliced to form an air inlet wall, and the air outlet panels of each control fluid unit are all located on the same side of the diversion device and are spliced to form an air outlet wall; A plurality of the control fluid units are arranged in multiple layers along the circumferential direction to enclose a cylindrical shape; the shapes and sizes of the box bodies of each control fluid unit are the same; the number of air inlet holes of each control fluid unit is the same, the sizes of the air inlet holes of each control fluid unit located in the same layer are the same, and the sizes of the air inlet holes of each control fluid unit gradually decrease from top to bottom; the number and sizes of the air outlet holes of each control fluid unit are the same.

2. The diversion device according to claim 1, wherein The number of the air outlet holes is greater than the number of the air inlet holes.

3. The diversion device according to claim 1, wherein The box body is a hexahedron structure.

4. The diversion device according to claim 1, wherein The diversion device further includes an upper water-cooling ring pipe and a lower water-cooling ring pipe arranged at intervals up and down, and a plurality of water-cooling pipes connected between the upper water-cooling ring pipe and the lower water-cooling ring pipe and arranged at circumferential intervals; A plurality of limiting blocks are fixedly arranged at intervals from top to bottom on each water-cooling pipe, and the box body of the control fluid unit is clamped between two adjacent water-cooling pipes and connected to the limiting blocks.

5. The diversion device according to claim 4, wherein The bottom surface of the box body of each control fluid unit is inclined downward from the air outlet panel to the air inlet panel.

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