A flow guide device parameter determination method, device, equipment and medium

Abstract

This invention discloses a method, apparatus, equipment, and medium for determining the parameters of a flow guiding device, relating to the field of rocket engine technology, to solve the problems of low efficiency and poor flow guiding effect in existing methods for determining flow guiding device parameters. The method includes: obtaining the geometric parameters of the pipes connected to the flow guiding device; determining the geometric parameters of the outer shell of the flow guiding device based on the geometric parameters of the pipes connected to the flow guiding device and using a third-order Bézier curve formula; determining the geometric parameters of the guide blades based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using a third-order Bézier curve formula; and determining the geometric parameters of the opening structure based on the geometric parameters of the curved flow channel and the intermediate contraction tube, thus completing the parameter confirmation of the flow guiding device. The flow guiding device parameter determination method provided by this invention facilitates designers in efficiently determining the structural parameters of the flow guiding device, resulting in a smooth flow guiding device design with good flow guiding effect.

Description

Technical Field

[0001] This invention relates to the field of rocket engine technology, and in particular to a method, device, equipment and medium for determining the parameters of a flow guiding device. Background Technology

[0002] For a single-turbopump dual-thrust-chamber liquid rocket engine, the presence of swirl and vortices in the turbine outlet airflow leads to unbalanced flow distribution and uneven flow field distribution in the symmetrical branch pipes at the outlet. A flow guide device is typically designed at the bifurcation point connecting the turbine outlet and the two branch pipes to improve the flow characteristics of the branch pipes. However, due to differences in turbopump size and required flow distribution, the structural parameters of the flow guide device also vary. Existing technologies lack a systematic method for determining the parameters of the flow guide device, which is time-consuming for designers. Furthermore, the parameters of the guide vanes and curved flow channels in the flow guide device are usually determined manually by drawing lines, resulting in poor flow guidance performance. Summary of the Invention

[0003] The purpose of this invention is to provide a method, apparatus, device, and medium for determining the parameters of a flow guiding device, which solves the problems of low efficiency and poor flow guiding effect of existing methods for determining the parameters of a flow guiding device, and facilitates designers to efficiently determine the structural parameters of the flow guiding device, thereby obtaining a smooth flow guiding device shape with good flow guiding effect.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a method for determining parameters of a flow guiding device, comprising:

[0006] Obtain the geometric parameters of the pipes connected to the flow guiding device;

[0007] The geometric parameters of the inlet extension section, the inlet and outlet cross-sections of the curved flow channel, and the intermediate contraction pipe are determined based on the geometric parameters of the pipes connected to the flow guiding device.

[0008] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel are determined using the third-order Bezier curve formula.

[0009] Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel are determined using the third-order Bezier curve formula.

[0010] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet are determined, thus completing the parameter confirmation of the flow guiding device.

[0011] Compared with existing technologies, the method for determining the parameters of a flow guiding device provided by this invention obtains the geometric parameters of the pipes connected to the flow guiding device; firstly, it determines the geometric parameters of the inlet extension section, the inlet and outlet cross-sections of the curved flow channel, and the intermediate contraction tube, thereby determining the spatial range of the flow guiding device; then, based on the geometric parameters of the inlet and outlet cross-sections of the curved flow channel and using the third-order Bezier curve formula, it determines the outer wall parameters of the curved flow channel; these outer wall parameters can be used to generate a smooth outer wall of the curved flow channel, thus completing the determination of the outer shell parameters of the flow guiding device; based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, and using the third-order Bezier curve formula, it determines the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel, which can reduce the flow resistance of the generated guide vanes and improve the flow diversion effect of the flow guiding device; finally, it determines the geometric parameters of the small hole in the middle of the contraction tube and the semi-circular hole at the outlet, thus completing the parameter confirmation of the flow guiding device. This method provides theoretical support for the parameterization of gas branch pipeline flow guiding devices with inlet rectification function and adjustable branch outlet flow. Only key parameters in each step are required to determine the geometric shape of complex flow guiding devices. This method is beneficial for guiding the design of flow guiding devices and for guiding research on improving the performance of flow guiding devices. It allows designers to efficiently generate smooth flow guiding device shapes and independently adjust the aerodynamic performance or strength of flow guiding devices.

[0012] In a second aspect, the present invention provides a device for determining parameters of a flow guiding device, comprising:

[0013] The pipeline geometry parameter acquisition module is used to acquire the geometry parameters of the pipelines connected to the flow guiding device;

[0014] A partial shell structure parameter determination module is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device.

[0015] The curved flow channel outer wall parameter determination module is used to determine the curved flow channel outer wall parameters based on the geometric parameters of the inlet and outlet sections of the curved flow channel and the third-order Bezier curve formula.

[0016] The guide vane geometry parameter determination module is used to determine the guide vane geometry parameters from the inlet of the inlet extension section to the outlet of the curved flow channel based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using a third-order Bezier curve formula. ；

[0017] The perforation structure geometric parameter determination module is used to determine the geometric parameters of the small hole in the middle of the contraction tube and the semi-circular hole at the outlet based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, thereby completing the parameter confirmation of the flow guiding device.

[0018] Thirdly, the present invention also provides a device for determining the parameters of a flow guiding device, comprising:

[0019] Communication unit / communication interface, used to obtain the geometric parameters of the pipe connected to the flow guiding device;

[0020] The processing unit / processor is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device.

[0021] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel are determined using the third-order Bezier curve formula.

[0022] Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel are determined using the third-order Bezier curve formula.

[0023] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet are determined, thus completing the parameter confirmation of the flow guiding device.

[0024] Fourthly, the present invention also provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions that, when the instructions are executed, implement the above-described method for determining the parameters of the diversion device.

[0025] The technical effects achieved by the device-type solutions provided in the second aspect, the equipment-type solutions provided in the third aspect, and the media-type solutions provided in the fourth aspect are the same as those achieved by the method-type solutions provided in the first aspect, and will not be repeated here. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of a gas branch pipeline diversion device in the prior art;

[0028] Figure 2 A flowchart of a method for determining parameters of a flow guiding device provided by the present invention;

[0029] Figure 3 A schematic diagram of the geometric parameters of the inlet extension section provided by the present invention;

[0030] Figure 4 A schematic diagram of the geometric parameters of the curved flow channel provided by the present invention;

[0031] Figure 5 A schematic diagram of the geometric parameters of the intermediate through-pipe provided by the present invention;

[0032] Figure 6 A schematic diagram of the geometric parameters of the bellows provided by the present invention;

[0033] Figure 7 A schematic diagram of the geometric parameters of the guide vane provided by the present invention;

[0034] Figure 8 A schematic diagram of the inlet guide vane geometry parameters provided by the present invention;

[0035] Figure 9 A schematic diagram of the geometric parameters of the inlet guide vane structure from a top view provided by the present invention;

[0036] Figure 10 A schematic diagram of the geometric parameters of the small hole in the middle of the shrink tube provided by the present invention;

[0037] Figure 11 A schematic diagram of the geometric parameters of the outlet semicircular hole provided by the present invention;

[0038] Figure 12 This invention provides a schematic diagram of a device for determining parameters of a flow guiding device.

[0039] Figure 13 This is a schematic diagram of a flow guiding device parameter determination equipment provided by the present invention.

[0040] Figure label:

[0041] 1-Inlet extension section, 2-Bent flow channel, 3-Intermediate contraction tube, 4-Guide vane, 5-Inlet guide vane, 6-Small hole in the middle of the contraction tube, 7-Outlet semi-circular hole, 8-Second sector area, 9-First sector area, 10-Outlet section of bent flow channel, 11-Bent flow channel trajectory line, 12-First profile trajectory line, 13-Second profile trajectory line, 14-Third profile trajectory line, 15-Fourth profile trajectory line, 16-Fifth profile trajectory line, 17-Guide vane trajectory line. Detailed Implementation

[0042] To facilitate a clear description of the technical solutions in the embodiments of the present invention, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first threshold and the second threshold are merely used to distinguish different thresholds and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" are not necessarily different.

[0043] It should be noted that in this invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or specific solution described as "exemplary" or "for example" in this invention should not be construed as being more preferred or advantageous than other embodiments or specific solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0044] In this invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0045] The existing branch pipeline diversion devices lack guiding quantitative, systematic and universal methods for determining key parameters, resulting in low efficiency in parameter determination and poor diversion effect of the manufactured devices.

[0046] To address the aforementioned problems, this invention provides a method, apparatus, device, and medium for determining the parameters of a flow guiding device. The flow guiding device is divided into seven parts for parameter determination. (See [link to relevant documentation]). Figure 1 The system comprises an inlet extension section (1), a curved flow channel (2), an intermediate contraction tube (3), guide vanes (4), an inlet guide vane (5), a small hole in the middle of the contraction tube (6), and an outlet semi-circular hole (7). This provides a systematic method for determining the parameters of a gas branch pipeline guide device with inlet rectification and adjustable branch outlet flow. It facilitates designers in efficiently generating smooth guide devices, improving the flow splitting effect, and allowing for independent adjustment of the aerodynamic performance or strength characteristics of the guide device. A detailed explanation follows.

[0047] Figure 2 This invention provides a flowchart of a method for determining parameters of a flow guiding device. The method includes the following steps:

[0048] Step 201: Obtain the geometric parameters of the pipes connected to the flow guiding device.

[0049] The geometric parameters of the pipes connected to the flow guiding device include: the geometric parameters of the first pipe, the geometric parameters of the second pipe, the geometric parameters of the third pipe, and the distance between the inlets or outlets of each pipe. The first pipe is connected to the inlet of the flow guiding device, the second pipe is a branch pipe connected to the branch outlets on both sides of the flow guiding device, and the third pipe is connected to the middle outlet of the flow guiding device.

[0050] Step 202: Determine the geometric parameters of the inlet extension section, the inlet and outlet cross-sections of the curved flow channel, and the intermediate contraction pipe based on the geometric parameters of the pipe connected to the flow guiding device.

[0051] Specifically, the parameters for the imported extension section can be found in [reference needed]. Figure 3 ,like Figure 3 As shown, the parameters of the inlet extension section include the overall cylindrical radius r1 and height h1. The overall cylindrical radius r1 is equal to the inner diameter of the outlet section of the first pipe, and the height h1 is equal to the distance from the outlet section of the first pipe to the lowest point of the inlet section of the second pipe. The section at the bottom of the inlet extension section includes two symmetrical first sector regions 9. Each first sector region 9 consists of an arc with radius r2, an arc with radius r3, and an arc with radius r... 17 Chamfer angle, radius r 18 The system consists of chamfered connections, where radius r2 equals radius r1 minus the thickness l1 of the overall cylinder. Thickness l1 is determined based on material properties and working pressure to ensure a safety margin. The center of the arc with radius r2 and the center of the arc with radius r3 lie on the central axis of the overall cylinder. 17 Chamfer angle, radius r 18 The chamfer angle is adjusted as needed; the top section includes two second sector regions 8 corresponding to the first sector region 9 on the bottom section, consisting of an arc with radius r4, an arc with radius r5, and an arc with radius r 19 Chamfer angle, radius r 20 Chamfer angle, radius r 21 Convex angle and radius r 22 The system consists of chamfered connections, where the center of the arc with radius r4 lies on the central axis of the entire cylinder, and the distance between the center of the arc with radius r5 and the central axis is a first preset distance l8. 19 Chamfer angle, radius r 20 The radius of the chamfer is adjusted as needed. The bottom and top corresponding fan-shaped areas on the left and right sides of the first fan-shaped area 9 and the second fan-shaped area 8 are connected to obtain the inner wall parameters of the inlet extension section. The inlet extension section structure can be generated based on the parameters determined above.

[0052] The geometric parameters of the inlet and outlet sections of the curved flow channel can be found in [reference]. Figure 4 ,like Figure 4As shown, the geometric parameters of the inlet section of the curved flow channel are the same as those of the second sector region of the top section of the inlet extension. Due to the limitation of the outlet section of the second pipe, the inner radius r6 of the outlet section 10 of the curved flow channel plus the thickness l2 of the curved flow channel is equal to the inner radius of the inlet section of the second pipe. The thickness l2 of the curved flow channel is determined according to the material properties and working pressure to ensure a safety margin. The distance from the center of the outlet section of the curved flow channel to the bottom section of the inlet extension is h2.

[0053] The geometric parameters of the outlet section of the intermediate contraction pipe are the same as those of the inlet section of the third pipe.

[0054] Step 203: Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, determine the outer wall parameters of the curved flow channel using the third-order Bézier curve formula. The scanning hybrid trajectory from the second sector region to the outlet section of the curved flow channel is a three-dimensional tortuous trajectory, so this trajectory line is parameterized using a third-order Bézier curve.

[0055] Specifically, the coordinates of the four first control points are determined based on the geometric parameters of the inlet and outlet sections of the curved flow channel. (See [link to relevant documentation]). Figure 4 The coordinates of the first control point include the starting control point P0, the ending control point P3, and control points P1 and P2 located between P0 and P3. The coordinates of the starting control point P0 are the center coordinates of the curved flow channel outlet section. P3 is located on the center line of the second sector area of ​​the top section of the inlet extension section, and P3 is close to the midpoint of the inner circle arc of the second sector area. P1 and P2 are on the flow channel center plane of the curved flow channel.

[0056] Based on the coordinates of the four first control points, and using the third-order Bézier curve formula, the curved flow channel trajectory line 11 is determined; the third-order Bézier curve formula is shown in formula (1):

[0057] B(t)=P0(1-t) 3 +3P1t(1-t) 2 +3P2t 2 (1-t)+P3t 3 ,t∈[0,1](1)

[0058] Where B(t) is the curved flow channel trajectory line, t is the coordinate of any point on the curve, and P0, P1, P2, P3 are the coordinates of the four control points. The curved flow channel trajectory line can be obtained by substituting the coordinate values ​​of the first control points P0, P1, P2, P3 into formula (1).

[0059] The outer wall parameters of the curved flow channel are determined based on the curved flow channel trajectory line and the scanning mixing method.

[0060] Using a sweep blending method, the second sector region is swept and blended along the curved flow channel trajectory line to the curved flow channel outlet section, forming a curved flow channel with a thickness of l2. The curved flow channels on the left and right sides have a symmetrical structure, which can be obtained by mirroring.

[0061] After determining the outer wall parameters of the curved flow channel, the outer wall parameters of the intermediate contraction tube are then determined, such as... Figure 5 As shown, firstly, based on the geometric parameters of the curved flow channel outlet section and the geometric parameters of the first sector region in the bottom section of the inlet extension, a parallelogram is drawn. The distance between the bottom of the parallelogram and the central axis is the radius r8 of the inlet section circle of the contraction tube. The distance between the midpoint of the arc within the first sector region and the center of the bottom section circle of the inlet extension is the radius r8 plus the thickness l3. The distance between the top and the central axis is the radius r7 of the contraction section circle of the contraction tube. The height of the parallelogram is the height h3 of the contraction section of the contraction tube, and the width of the parallelogram is the thickness l3 of the contraction tube. This parallelogram is rotated along the central axis to generate the middle contraction section of the contraction tube. The intersection of the formed pipe with the inlet extension and the curved flow channel is cut off to generate a through pipe. A corrugated pipe is connected at the outlet of the contraction tube to form a complete contraction tube. Figure 6 As shown, the key parameters of the bellows rotational tensile profile are as follows: bending radius r9, r 10 r 11 r 12 r 13 r 14 The height of the corrugations is h4, the height of the antinodes is h5, and the thickness is l4. This cross-section is then rotated and stretched around the central axis to generate a bellows. The design parameters of the flow guide device shell are now complete. Based on the parameters determined above, a model of the flow guide device shell can be generated. Next, the parameters of the flow guide blades and other components are designed within the flow guide device shell. It should be understood that it is also possible to first determine the geometric parameters of the intermediate contraction tube and then determine the parameters of the outer wall of the curved flow channel. The intersection of the formed outer wall of the curved flow channel and the intermediate contraction tube is then removed to obtain the structure of the outer wall of the curved flow channel and the intermediate contraction tube.

[0062] Step 204: Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, determine the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel using the third-order Bezier curve formula.

[0063] Specifically, the trajectory of the guide vanes is determined by the third-order Bezier curve formula based on the geometric parameters of the inlet extension section, the geometric parameters of the intermediate contraction tube, and the outer wall parameters of the curved flow channel.

[0064] like Figure 7As shown, since the guide vane is a twisted shape in three-dimensional space, the guide vane trajectory line 17 of the twisting process of the guide vane is first determined. In formula (1), P0 is replaced with P27, P1 is replaced with P26, P2 is replaced with P25, and P3 is replaced with P24. The parameterization is defined by the third-order Bezier curve. P24 is at a second preset distance from the cross section of the first sector area. P25 and P26 are in the curved flow channel. P27 is on the cross section inside the curved flow channel and is at a third preset distance from the outlet cross section of the curved flow channel.

[0065] Based on the guide vane trajectory, multiple profile trajectories are determined using the third-order Bézier curve formula: first profile trajectory 12, second profile trajectory 13, third profile trajectory 14, fourth profile trajectory 15, and fifth profile trajectory 16. The control points for the first profile trajectory 12 are P4, P5, P6, and P7, and it passes through the starting control point P24 of the guide vane trajectory 17. The control points for the second profile trajectory 13 are P8, P9, P10, and P11. The control points for the third profile trajectory 14 are P12, P13, P14, P15, P16, P17, P18, P19, P10, and P11. The fourth profile trajectory line 15 is controlled by four points: P16, P17, P18 and P19. The fifth profile trajectory line 16 is controlled by four points: P20, P21, P22 and P23. Each profile trajectory line passes through a dividing point of the guide vane trajectory line 17, and the plane of each profile trajectory line is perpendicular to the guide vane trajectory line at the dividing point. After determining the coordinates of the control points of each profile trajectory line, the coordinates of the control points of each profile trajectory line are substituted into formula (1), and the profile of each section is parameterized using a third-order Bézier curve.

[0066] Based on multiple profile trajectories and guide vane trajectories, the surface parameters of the guide vanes are determined using a scanning hybrid method.

[0067] The geometric parameters of the guide vane are determined based on the thickness of the guide vane and the surface parameters of the guide vane.

[0068] Based on the geometric parameters of the guide vane, the geometric parameters of another guide vane are determined using the mirror method.

[0069] Specifically, the five profile lines are scanned and mixed along the trajectory line of the guide vane to form the blade surface, the blade thickness l5 is determined, and the excess part of the blade intersecting with the inlet extension section, the curved pipe and the contraction pipe is cut off to form the guide vane. The left and right guide vanes are mirrored and copied to generate the blade.

[0070] Based on the geometric parameters of the inlet extension section and the intermediate contraction tube, the geometric parameters of the inlet guide vane within the inlet extension section can also be determined. See [link to relevant documentation]. Figure 8 and Figure 9 The inlet guide vane is a straight blade; determine its profile height h6 and upper and lower semicircular radii r. 14At a height h7 from the bottom of the inlet extension section, the section is stretched radially to form an inlet guide vane connecting the inlet extension section and the intermediate contraction pipe. Then, the array angle is rotated by α or 2α to generate the remaining 7 inlet guide vanes. The height h6 is less than the overall cylinder height; a larger value within this range results in better flow uniformity. A fluid simulation model can be generated based on the determined parameters. The number of inlet guide vanes is determined based on the simulation results. At this point, the parameters of the guide vanes and inlet guide vanes within the flow guiding device housing are determined, and the model is generated. Next, the parameters of the circular holes on the intermediate contraction pipe and the curved flow channel are determined.

[0071] Step 205: Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, determine the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet, and complete the parameter confirmation of the flow guiding device.

[0072] The geometric parameters of the small hole in the middle of the contraction tube are determined based on the geometric parameters of the intermediate contraction tube and the geometric parameters of the outlet section of the curved flow channel.

[0073] Specifically, first, the position and size of the circular cross-section of the central small hole are determined. Based on the geometric parameters of the curved flow channel outlet cross-section, a circular cross-section is determined. This circular cross-section is parallel to the curved flow channel outlet cross-section, and the distance between the circular cross-section and the curved flow channel outlet cross-section is a preset length of l6. The distance between the center of the circular cross-section and the bottom surface is h8, and the radius of the circular cross-section is r. 15 ,

[0074] The circular cross-section is moved perpendicular to the outlet cross-section of the curved flow channel, cutting off the intermediate contraction tube to form a small hole in the middle of the contraction tube. The parameters of the part of the circular cross-section that overlaps with the intermediate contraction tube are defined as the geometric parameters of the small hole in the middle of the contraction tube. The key parameters of the circular hole in the contraction tube on the other side are defined in the same way as those of the circular hole above. A center is established, and the plane containing the center is parallel to the outlet cross-section of the curved flow channel on the left, at a distance of l7, and at a distance of h9 from the bottom surface. The radius of the circular cross-section is r. 16 The circular cross-section is stretched and the central contraction tube is removed to form a small orifice in the middle of the contraction tube. Since the flow rate of the left and right branch pipes can be distributed by adjusting the radius of the small orifice in the middle of the contraction tube, simulation experiments are used to determine whether the required flow splitting conditions can be achieved. If not, the radius r of the circular cross-section is adjusted. 15 and the radius r of the circular cross section 16 The values ​​are then recalculated for the small orifice in the middle of the contraction tube until the requirements are met. This allows designers to independently adjust the branch outlet flow rate of the flow guiding device.

[0075] The geometric parameters of the outlet semicircular hole are determined based on the outer wall parameters of the curved flow channel and the geometric parameters of the outlet section of the curved flow channel.

[0076] First, the geometric parameters of the semicircle are determined based on the geometric parameters of the curved flow channel outlet section. The semicircle is perpendicular to the curved flow channel outlet section, and the center of the semicircle is the same as the geometric parameters of the curved flow channel outlet section.

[0077] Then, the semicircle is rotated by a first preset rotation angle around the axis of the center and moved along the outer wall of the curved flow channel. The parameters of the part of the semicircle that overlaps with the outer wall of the curved flow channel are determined as the geometric parameters of the outlet semicircle hole.

[0078] Finally, the outlet semicircular hole is rotated by a second preset rotation angle to obtain multiple outlet semicircular hole geometric parameters.

[0079] Specifically, a section with radius r is made perpendicular to the outlet section of the curved flow channel and passing through the central axis. 17 A semicircle is formed, with its center coinciding with the center of the curved flow channel outlet section. The two ends of its radius are perpendicular to the outlet section circle. An axis perpendicular to the curved flow channel plane and passing through the center of the semicircle is constructed. This semicircle is then rotated around this axis by a first predetermined rotation angle β. The semicircle is then stretched through the inner and outer walls of the curved flow channel to form a semicircular outlet hole. A second rotation angle θ is then applied to generate the remaining three semicircular holes at the curved flow channel outlet. The parameters for the semicircular holes on the other side of the curved flow channel are designed identically. At this point, the parameters of the entire flow guiding device are determined.

[0080] The key parameters of the seven structural components of the flow guiding device are shown in Table 1:

[0081] Table 1 Key Parameters of the Flow Guiding Device

[0082]

[0083] The embodiments of the present invention can divide functional modules according to the above method examples. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in the embodiments of the present invention is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0084] When dividing each function into modules according to its corresponding function. Figure 12 A schematic diagram of a flow guiding device parameter determination device provided by the present invention is shown. Figure 12 As shown, the device includes:

[0085] Pipeline geometry parameter acquisition module 121 is used to acquire the geometry parameters of the pipeline connected to the flow guiding device;

[0086] The partial shell structure parameter determination module 122 is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device; the geometric parameters of the intermediate contraction tube include the geometric parameters of the inlet section of the intermediate contraction tube.

[0087] The curved flow channel outer wall parameter determination module 123 is used to determine the curved flow channel outer wall parameters based on the geometric parameters of the inlet and outlet sections of the curved flow channel and the third-order Bezier curve formula.

[0088] The guide vane geometry parameter determination module 124 is used to determine the guide vane geometry parameters from the inlet of the inlet extension section to the outlet of the curved flow channel based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using the third-order Bezier curve formula.

[0089] The orifice structure geometric parameter determination module 125 is used to determine the geometric parameters of the small hole in the middle of the contraction tube and the semi-circular hole at the outlet based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, thereby completing the parameter confirmation of the flow guiding device.

[0090] Optionally, the curved flow channel outer wall parameter determination module 123 may include:

[0091] The first control point coordinate determination unit is used to determine the coordinates of four first control points based on the geometric parameters of the inlet and outlet sections of the curved flow channel.

[0092] The curved flow channel trajectory line determination unit is used to determine the curved flow channel trajectory line based on the coordinates of the four first control points and the third-order Bézier curve formula.

[0093] A scanning mixing unit is used to determine the outer wall parameters of the curved flow channel based on the curved flow channel trajectory line and the scanning mixing method.

[0094] Optionally, the coordinates of the starting control point in the first control point are the center coordinates of the curved flow channel outlet section, and the ending control point in the first control point is on the top section of the inlet extension section.

[0095] Optionally, the guide vane geometry parameter determination module 124 may include:

[0096] The guide vane trajectory determination unit is used to determine the guide vane trajectory line based on the geometric parameters of the inlet extension section, the geometric parameters of the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using the third-order Bezier curve formula.

[0097] The profile trajectory determination unit is used to determine multiple profile trajectories based on the guide vane trajectory line using a third-order Bézier curve formula; each profile trajectory line passes through a dividing point of the guide vane trajectory line, and the plane of each profile trajectory line is perpendicular to the guide vane trajectory line at the dividing point;

[0098] The guide vane surface parameter determination unit is used to determine the guide vane surface parameters based on multiple profile trajectories and guide vane trajectories using a scanning and mixing method.

[0099] A guide vane geometry parameter determination unit is used to determine the guide vane geometry parameters based on the guide vane thickness and the guide vane surface parameters;

[0100] Another guide vane geometry parameter determination unit is used to determine the geometry parameters of another guide vane using a mirror method based on the geometry parameters of the guide vane.

[0101] Optionally, the hole structure geometry parameter determination module 125 may include:

[0102] The unit for determining the geometric parameters of the small hole in the middle of the contraction tube is used to determine the geometric parameters of the small hole in the middle of the contraction tube based on the geometric parameters of the middle contraction tube and the geometric parameters of the outlet section of the curved flow channel.

[0103] The outlet semicircular hole geometry parameter determination unit is used to determine the outlet semicircular hole geometry parameters based on the outer wall parameters of the curved flow channel and the outlet cross-sectional geometry parameters of the curved flow channel.

[0104] Optionally, the geometric parameter determination unit for the small hole in the middle of the shrink tube can be specifically used for:

[0105] The circular cross-section is determined based on the geometric parameters of the curved flow channel outlet section. The circular cross-section is parallel to the curved flow channel outlet section, and the distance between the circular cross-section and the curved flow channel outlet section is a preset length.

[0106] The circular cross-section is moved in a direction perpendicular to the outlet cross-section of the curved flow channel, and the parameters of the part of the circular cross-section that overlaps with the middle contraction tube are determined as the geometric parameters of the small hole in the middle of the contraction tube.

[0107] Optionally, the unit for determining the geometric parameters of the outlet semicircular hole can be specifically used for:

[0108] The geometric parameters of the semicircle are determined based on the geometric parameters of the curved flow channel outlet section. The semicircle is perpendicular to the curved flow channel outlet section, and the center of the semicircle is the same as the geometric parameters of the curved flow channel outlet section.

[0109] The semicircle is rotated by a first preset rotation angle around the axis of the center and moved along the outer wall of the curved flow channel. The parameters of the part of the semicircle that coincides with the outer wall of the curved flow channel are determined as the geometric parameters of the outlet semicircle hole.

[0110] The outlet semicircular hole is rotated by a second preset rotation angle to obtain multiple outlet semicircular hole geometric parameters.

[0111] When using the corresponding integrated unit Figure 13 This diagram illustrates the structure of a flow guiding device parameter determination apparatus provided by the present invention. Figure 13 As shown, the device includes:

[0112] Communication unit / communication interface, used to obtain the geometric parameters of the pipe connected to the flow guiding device;

[0113] The processing unit / processor is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device.

[0114] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel are determined using the third-order Bezier curve formula.

[0115] Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel are determined using the third-order Bezier curve formula.

[0116] Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet are determined, thus completing the parameter confirmation of the flow guiding device.

[0117] In some possible implementations, the device may also include a storage module for storing the base station's program code and data.

[0118] The processing unit can be a processor or controller, such as a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. The processor can also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc. The communication module can be a transceiver, transceiver circuitry, or communication interface, etc. The storage module can be a memory.

[0119] like Figure 13 As shown, the device may also include a communication line. The communication line may include a path for transmitting information between the components.

[0120] Optional, such as Figure 13 As shown, the terminal device may further include a memory. The memory stores computer execution instructions for implementing the present invention, and the execution is controlled by a processor. The processor executes the computer execution instructions stored in the memory, thereby implementing the method provided in the embodiments of the present invention.

[0121] like Figure 13 As shown, the memory can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed discs, laser discs, optical discs, universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited to these. The memory can exist independently and be connected to the processor via communication lines. The memory can also be integrated with the processor.

[0122] Optionally, the computer execution instructions in the embodiments of the present invention may also be referred to as application code, and the embodiments of the present invention do not specifically limit this.

[0123] In a specific implementation, as one example, such as Figure 13 As shown, a processor may include one or more CPUs, such as Figure 13 CPU0 and CPU1 in the CPU.

[0124] In a specific implementation, as one example, such as Figure 13 As shown, the terminal device may include multiple processors, such as Figure 13 The processors in the system. Each of these processors can be a single-core processor or a multi-core processor.

[0125] On the one hand, a computer-readable storage medium is provided, which stores instructions that, when executed, implement the aforementioned method for determining parameters of a flow guiding device.

[0126] The above mainly describes the solutions provided by the embodiments of the present invention from the perspective of the interaction of various modules. It is understood that, in order to achieve the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments disclosed herein, the present invention can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application of the technical solution and the defined constraints. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention. In the above embodiments, it can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented wholly or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are executed wholly or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a terminal, a user equipment, or other programmable devices. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; or an optical medium, such as a digital video disc (DVD); or a semiconductor medium, such as a solid-state drive (SSD).

[0127] Although the invention has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed invention. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0128] Although the invention has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made therein without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely exemplary descriptions of the invention as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if such modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include such modifications and modifications.

Claims

1. A method for determining parameters of a flow guiding device, characterized in that, include: Obtain the geometric parameters of the pipes connected to the flow guiding device; The geometric parameters of the inlet extension section, the inlet and outlet cross-sections of the curved flow channel, and the intermediate contraction pipe are determined based on the geometric parameters of the pipes connected to the flow guiding device. Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel are determined using the third-order Bezier curve formula. Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel are determined using the third-order Bezier curve formula. Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet are determined, and the parameters of the flow guiding device are confirmed. The step of determining the outer wall parameters of the curved flow channel based on the geometric parameters of the inlet and outlet sections of the curved flow channel and using the third-order Bézier curve formula includes: The coordinates of the four first control points are determined based on the geometric parameters of the inlet and outlet sections of the curved flow channel. The curved flow channel trajectory is determined based on the coordinates of the four first control points and the third-order Bézier curve formula. The outer wall parameters of the curved flow channel are determined based on the curved flow channel trajectory line and the scanning mixing method. The coordinates of the starting control point in the first control point are the coordinates of the center of the curved flow channel outlet section, and the coordinates of the ending control point in the first control point are on the top section of the inlet extension section. The process of determining the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using the third-order Bezier curve formula, includes: Based on the geometric parameters of the inlet extension section, the geometric parameters of the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the trajectory line of the guide vane is determined by the third-order Bezier curve formula. Based on the guide vane trajectory line, multiple profile trajectories are determined using the third-order Bezier curve formula; each profile trajectory line passes through a dividing point of the guide vane trajectory line, and the plane of each profile trajectory line is perpendicular to the guide vane trajectory line at the dividing point; Based on multiple profile trajectories and guide vane trajectories, the surface parameters of the guide vanes are determined using a scanning hybrid method. The geometric parameters of the guide vane are determined based on the thickness of the guide vane and the surface parameters of the guide vane. Based on the geometric parameters of the guide vane, the geometric parameters of another guide vane are determined using the mirror method.

2. The method for determining the parameters of the flow guiding device according to claim 1, characterized in that, The step of determining the geometric parameters of the small hole in the middle of the contraction tube and the semi-circular hole at the outlet based on the geometric parameters of the inlet and outlet cross sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube includes: The geometric parameters of the small hole in the middle of the contraction tube are determined based on the geometric parameters of the intermediate contraction tube and the geometric parameters of the outlet section of the curved flow channel. The geometric parameters of the outlet semicircular hole are determined based on the outer wall parameters of the curved flow channel and the geometric parameters of the outlet section of the curved flow channel.

3. The method for determining the parameters of the flow guiding device according to claim 2, characterized in that, The step of determining the geometric parameters of the small orifice in the middle of the contraction tube based on the geometric parameters of the intermediate contraction tube and the geometric parameters of the outlet section of the curved flow channel includes: The circular cross-section is determined based on the geometric parameters of the curved flow channel outlet section. The circular cross-section is parallel to the curved flow channel outlet section, and the distance between the circular cross-section and the curved flow channel outlet section is a preset length. The circular cross-section is moved in a direction perpendicular to the outlet cross-section of the curved flow channel, and the parameters of the part of the circular cross-section that overlaps with the middle contraction tube are determined as the geometric parameters of the small hole in the middle of the contraction tube.

4. The method for determining the parameters of the flow guiding device according to claim 2, characterized in that, The determination of the geometric parameters of the outlet semi-circular hole based on the outer wall parameters of the curved flow channel and the geometric parameters of the outlet cross-section of the curved flow channel includes: The geometric parameters of the semicircle are determined based on the geometric parameters of the curved flow channel outlet section. The semicircle is perpendicular to the curved flow channel outlet section, and the center of the semicircle is the same as the geometric parameters of the curved flow channel outlet section. The semicircle is rotated by a first preset rotation angle around the axis of the center and moved along the outer wall of the curved flow channel. The parameters of the part of the semicircle that coincides with the outer wall of the curved flow channel are determined as the geometric parameters of the outlet semicircle hole. The outlet semicircular hole is rotated by a second preset rotation angle to obtain multiple outlet semicircular hole geometric parameters.

5. A device for determining parameters of a flow guiding device, characterized in that, The method for determining parameters of the flow guiding device according to any one of claims 1-4, the device comprising: The pipeline geometry parameter acquisition module is used to acquire the geometry parameters of the pipelines connected to the flow guiding device; A partial shell structure parameter determination module is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device. The curved flow channel outer wall parameter determination module is used to determine the curved flow channel outer wall parameters based on the geometric parameters of the inlet and outlet sections of the curved flow channel and the third-order Bezier curve formula. The guide vane geometry parameter determination module is used to determine the guide vane geometry parameters from the inlet of the inlet extension section to the outlet of the curved flow channel based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, using the third-order Bezier curve formula. The perforation structure geometric parameter determination module is used to determine the geometric parameters of the small hole in the middle of the contraction tube and the semi-circular hole at the outlet based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, thereby completing the parameter confirmation of the flow guiding device.

6. A device for determining parameters of a flow guiding device, characterized in that, The device used in the method for determining parameters of the flow guiding device according to any one of claims 1-4 includes: Communication unit / communication interface, used to obtain the geometric parameters of the pipe connected to the flow guiding device; The processing unit / processor is used to determine the geometric parameters of the inlet extension section, the geometric parameters of the inlet and outlet sections of the curved flow channel, and the geometric parameters of the intermediate contraction tube based on the geometric parameters of the pipe connected to the flow guiding device. Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel are determined using the third-order Bezier curve formula. Based on the geometric parameters of the inlet extension section, the intermediate contraction tube, and the outer wall parameters of the curved flow channel, the geometric parameters of the guide vanes from the inlet of the inlet extension section to the outlet of the curved flow channel are determined using the third-order Bezier curve formula. Based on the geometric parameters of the inlet and outlet sections of the curved flow channel, the outer wall parameters of the curved flow channel, and the geometric parameters of the intermediate contraction tube, the geometric parameters of the small hole in the middle of the contraction tube and the geometric parameters of the semi-circular hole at the outlet are determined, thus completing the parameter confirmation of the flow guiding device.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, implement the method for determining the parameters of the flow guiding device as described in any one of claims 1 to 4.

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