Design method and device of parallel channel flow controller based on multi-connecting-rod transmission

Abstract

The invention discloses a parallel channel flow controller design method and device based on multi-connecting-rod transmission, and belongs to the technical field of flow control systems. According to the method, a flow controller is installed at the wall thickness discontinuous position between parallel channels, and continuous adjustment of airflow and dynamic conversion of profiles are achieved in combination with a multi-connecting-rod transmission mechanism. Comprising the steps of constructing parallel channels; a multi-connecting-rod mechanism is arranged in the flow controller, and convex, flat and concave form transformation of a skin profile is controlled through rotation of a driving shaft and stretching of a hydraulic rod; sliding rail and sliding block translation is used for replacing traditional rotating motion, interference is eliminated in combination with a deformable skin material, and airflow obstruction is reduced through smooth transition profile design. According to the device, synchronous control over airflow adjustment and profile transformation is achieved through the multi-connecting-rod mechanism symmetrical layout and the dynamic sealing technology, and the problems that a traditional device is lagged in response, insufficient in adjustment precision and the like are solved; the method is suitable for multi-channel airflow accurate regulation and control in the fields of aerospace, energy power and the like, and has the characteristics of efficient transmission, robustness and stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of parallel channel flow control systems, and particularly relates to a design method and device for a parallel channel flow controller based on multi-link transmission. Background Art

[0002] In the field of aerospace, flow control technology is one of the core elements to ensure the efficient and safe operation of aircraft. With the development of aircraft design towards hypersonic, reusable, multi-task adaptable and other directions, the dynamic characteristics and stability of the flow system are facing unprecedented challenges.

[0003] Traditional flow control devices mostly adopt fixed geometric structures or single actuation modes, making it difficult to achieve coordinated regulation of multi-channel flow fields. Especially when dealing with high-dynamic and strongly coupled flow disturbances, there are often problems such as response lag and insufficient adjustment accuracy. Against this background, the design method of a parallel channel flow controller based on multi-link transmission has emerged, providing an innovative idea for solving the precise regulation of complex flow systems. Compared with traditional series actuation mechanisms, the multi-link transmission system can decompose the input motion of a single drive source into coordinated actions of multiple output ends, realizing synchronous adjustment of multi-channel flow parameters.

[0004] However, the following problems still exist in the prior art: when the flow controller moves in a complex-shaped channel, it is easy to interfere with the channel wall; the complexity of the mechanism causes air flow obstruction, affecting the system efficiency; the profile adjustment and motion control cannot be achieved synchronously; the sealing performance is difficult to maintain stable during dynamic adjustment. Summary of the Invention

[0005] The main object of the present invention is to overcome the defects of traditional flow control devices in the prior art. The present invention provides a design method and device for a parallel channel flow controller based on multi-link transmission, solves the problems of interference, air flow obstruction, adjustment lag and sealing failure existing in traditional flow control devices, and realizes precise regulation of multi-channel air flow.

[0006] In a first aspect, the present invention proposes a design method for a parallel channel flow controller based on multi-link transmission, including a parallel channel flow controller and at least two parallel channels. The method includes:

[0007] Constructing a parallel channel, the parallel channel being an enclosed space surrounded by an upper wall surface, a lower wall surface, side wall surfaces and wall thickness discontinuities. An upper slide rail slider device and a lower slide rail slider are respectively arranged on the upper wall surface and the lower wall surface, and an upper slide rail skin structure and a lower slide rail skin structure are respectively arranged in the spaces on both sides of the upper slide rail slider device and the lower slide rail slider;

[0008] Install a parallel-channel flow controller at the wall thickness discontinuity between the parallel channels, such that the parallel-channel flow controller is located in the enclosed space formed by the wall thickness discontinuity, the upper wall surface, and the lower wall surface. A multi-link transmission mechanism is connected between the upper rail skin structure and the lower rail skin structure;

[0009] Airflow regulation and wall surface morphology transformation: The multi-link transmission mechanism is connected to the parallel-channel flow controller. When the airflow in the parallel channels converges, the movement of the parallel-channel flow controller is controlled to achieve continuous regulation and on-demand start / stop of the converging airflow; during the movement of the parallel-channel flow controller, the multi-link transmission mechanism is driven by a drive shaft to transform the wall surface morphology of the parallel-channel flow controller and maintain a sealed state during the movement.

[0010] Preferably, the upper rail skin structure, the lower rail skin structure, and the wall surface skin structure of the parallel-channel flow controller form a skin structure. The parallel-channel flow controller consists of a flow controller main shaft, the skin structure, and the multi-link mechanism; a support seat is provided inside the skin structure. The multi-link mechanism includes a drive shaft, a hydraulic rod, a transmission pin shaft, a transmission link, a follower rocker, a positioning pin shaft, and a driven pin shaft; one end of the drive shaft is rotatably connected to the hydraulic rod through the drive shaft on the support seat, the other end of the hydraulic rod is connected to the transmission link through the transmission pin shaft, the other end of the transmission link and the follower rocker are rotatably connected to the skin structure through the positioning pin shaft, and the other end of the follower rocker is rotatably connected to the flow controller main shaft through the driven pin shaft.

[0011] More preferably, at least two sets of the multi-link mechanisms are provided, and at least two sets of the multi-link mechanisms are arranged on both sides of the perpendicular bisector of the line connecting the centers of the flow controller main shaft and the support seat, such that the two sets of the multi-link mechanisms can move to a symmetric or asymmetric form.

[0012] More preferably, a drive mechanism for controlling the operation of the parallel-channel flow controller is provided on the outer wall of the wall thickness discontinuity. The drive mechanism is composed of an external drive shaft, a drive rod, a transmission shaft, a transmission rod, and a positioning shaft connected to each other. The external drive shaft is connected to one end of the drive rod, one end of the transmission shaft is connected to the other end of the drive rod, the other end of the transmission shaft is connected to the transmission rod, and the other end of the transmission rod is connected to the multi-link mechanism through the positioning shaft.

[0013] More preferably, the drive mechanism drives the upper rail slider device, the lower rail slider, and the flow controller main shaft to translate along the rail through the external drive shaft to achieve the adjustment of the parallel-channel flow controller.

[0014] Further preferably, during the translation of the main shaft of the flow controller along the slide rail, the driven pin shaft is driven to displace, and at the same time, the driving shaft is controlled to rotate and the hydraulic rod is telescoped through the driving mechanism, so as to drive the positioning pin shaft in the skin structure to displace, realizing the arbitrary transformation of the surface of the skin structure into various different forms of convex, flat, and concave.

[0015] Further, the profile lines of the upper wall surface and the lower wall surface of the parallel channel are both set as arbitrary two-dimensional straight lines or curves.

[0016] Preferably, the surface styles of the upper slide rail slider device, the lower slide rail slider, the upper slide rail skin structure, and the lower slide rail skin structure and the upper wall surface and the lower wall surface respectively adopt a smooth transition design.

[0017] In a second aspect, an embodiment of the present invention provides a parallel channel flow controller device based on multi-link transmission, including at least two parallel channels and a parallel channel flow controller installed between the parallel channels, and further including:

[0018] The parallel channel is a closed space surrounded by an upper wall surface, a lower wall surface, side wall surfaces, and a wall thickness discontinuity. An upper slide rail slider device and a lower slide rail slider are respectively arranged on the upper wall surface and the lower wall surface, and an upper slide rail skin structure and a lower slide rail skin structure are respectively arranged in the spaces on both sides of the upper slide rail slider device and the lower slide rail slider;

[0019] The parallel channel flow controller is installed at the wall thickness discontinuity between the parallel channels and is located in the closed space jointly formed by the wall thickness discontinuity, the upper wall surface, and the lower wall surface. A multi-link transmission mechanism is connected between the upper slide rail skin structure and the lower slide rail skin structure;

[0020] The multi-link transmission mechanism is connected to the parallel channel flow controller and is used to control the movement of the parallel channel flow controller to realize continuous adjustment and on-off at any time of the converging air flow when the air flow in the parallel channels converges, and the movement of the parallel channel flow controller can drive the multi-link transmission mechanism, thereby changing the wall surface form of the parallel channel flow controller.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1) The present invention realizes the design of a parallel channel flow controller that can move freely in a flow channel with an arbitrary profile line of two-dimensional straight / curve without interference, and solves the problem of the obstruction of the air flow in the parallel channels caused by the complexity of the mechanism of the parallel flow controller.

[0023] (2) The present invention realizes the on - demand transformation of the profile of the parallel - channel flow controller during the movement of the parallel - channel flow controller.

[0024] (3) The present invention realizes the on - off at any time, continuous adjustment and airtight characteristics during the movement of the parallel - channel flow controller; the design concept and functional principle of the present invention are applicable to other types of parallel channels with any straight / curved two - dimensional channel profiles, and the number of parallel channels is not less than 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The drawings illustrate the embodiments and, together with the description, are used to explain the principles of the present invention. Other embodiments and many of the intended advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. Like reference numerals refer to corresponding similar components.

[0026] Figure 1 is a three - dimensional schematic diagram of a parallel - channel flow controller device based on multi - link drive according to an embodiment of the present invention;

[0027] Figure 2 is a flowchart of a design method of a parallel - channel flow controller based on multi - link drive according to an embodiment of the present invention;

[0028] Figure 3 are the three - view drawings of a design method of a parallel - channel flow controller based on multi - link drive according to an embodiment of the present invention;

[0029] Figure 4 are the end - view and sectional view of a design method of a parallel - channel flow controller based on multi - link drive according to an embodiment of the present invention;

[0030] Figure 5 is Figure 4 a partial view of part Ⅰ in the sectional view of

[0031] Figure 6 is a partial schematic diagram of a parallel - channel flow controller of a design method of a parallel - channel flow controller based on multi - link drive according to an embodiment of the present invention;

[0032] Wherein:

[0033] 1, upper wall surface; 2, upper slide - rail slider device; 3, upper slide - rail skin structure;

[0034] 4, drive mechanism; 401, transmission shaft; 402, drive rod; 403, external drive shaft; 404, transmission rod; 405, positioning shaft;

[0035] 5. Console; 6. Side wall surface; 7. Wall thickness discontinuity;

[0036] 8. Parallel channel flow controller; 801. Flow controller main shaft; 802. Driven rocker; 803. Skin structure; 804. Transmission pin shaft; 805. Transmission connecting rod; 806. Hydraulic rod; 807. Driven rocker; 808. Drive shaft; 809. Support seat; 810. Positioning pin shaft; 811. Driven pin shaft;

[0037] 9. Lower slide rail skin structure; 10. Lower slide rail slider; 11. Lower wall surface; 12. Side wall surface. Specific implementation manner

[0038] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0039] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0040] The core of the technology of the design method of the parallel channel flow controller based on multi-link transmission lies in: constructing a flow control execution system with a parallel topological structure through the spatial kinematic characteristics of the multi-link mechanism. This design concept highly conforms to the strict requirements of the aircraft flow control system for compactness and reliability: in the scenario of suppressing engine intake distortion, the multi-link mechanism can drive multiple regulating vanes to achieve asymmetric deflection, accurately compensating for the non-uniform oncoming flow; in the field of aerothermal management, through the linkage effect of the link system, the opening degrees of multiple cooling channels can be coordinated to achieve active and balanced distribution of thermal loads. More importantly, the inherent mechanical coupling characteristics of multi-link transmission can effectively avoid the reliability risks of traditional electro-hydraulic servo systems in high-vibration and high-temperature environments, and its pure mechanical force transmission method better meets the requirements of aerospace equipment for long life and low maintenance. The collaborative design of multi-link transmission and parallel channels breaks through the spatial layout limitations of traditional flow control devices, and can significantly improve the power density of the control unit through mechanism kinematic optimization.

[0041] At present, the global aerospace field is accelerating the development of new space transportation platforms and highly maneuverable aircraft. The intelligence, lightweight, and high reliability of flow control systems have become the focus of technological competition. The parallel-channel control method based on multi-link transmission not only provides a mechanical solution for the precise regulation of complex flow systems, but its modular design concept is more conducive to constructing standardized flow control units and promoting the integrated design of aircraft fluid systems. In the future, with the progress of material technology and mechanism innovation, this design method with both high-efficiency transmission and robust characteristics is expected to show broader application potential in fields such as the aerodynamic layout optimization of wide-domain aircraft, combined power mode conversion control, and the environmental control and life support system of space stations, providing key technical support for breaking through the performance bottlenecks of next-generation aerospace equipment.

[0042] The main purpose of the embodiments of the present invention is to overcome the defects in the prior art and propose a design method and device for a parallel-channel flow controller based on multi-link transmission. The parallel-channel flow controller is driven by a driving device to move the upper and lower sliders and the main shaft of the flow controller along the slide rails to achieve continuous adjustment of the parallel-channel flow controller. At the same time, a multi-link transmission mechanism is arranged inside the skin structure of the parallel-channel flow controller. By controlling the rotation speed of the drive shaft with any power device and controlling the telescopic distance of the hydraulic rod with a hydraulic pump, the multi-link mechanism is driven to move, realizing arbitrary transformation of the skin structure between convex, flat, and concave forms. This mechanism solves the interference problem that occurs when the flow controller rotates in an arbitrary two-dimensional flow channel, and solves the problem that the wall surface of the flow controller can be transformed into convex, flat, and concave forms as needed. It is convenient to control, realizes the start-stop and continuous adjustment at any time during the movement of the flow controller, can also transform the surface of the flow controller as needed, and maintains a sealed state during the movement.

[0043] In the first aspect, as Figure 1 shown, the embodiments of the present invention disclose a parallel-channel flow controller device based on multi-link transmission, including at least two parallel channels and a parallel-channel flow controller 8 installed between the parallel channels, and further including:

[0044] The parallel channel is a closed space surrounded by an upper wall surface 1, a lower wall surface 11, side wall surfaces (6, 12), and a wall thickness discontinuity 7. An upper slide rail slider device 2 and a lower slide rail slider 10 are respectively arranged on the upper wall surface 1 and the lower wall surface 11, and an upper slide rail skin structure 3 and a lower slide rail skin structure 9 are respectively arranged in the spaces on both sides of the upper slide rail slider device 2 and the lower slide rail slider 10;

[0045] The parallel-channel flow controller 8 is installed at the wall thickness discontinuity 7 between the parallel channels, located in the closed space jointly formed by the wall thickness discontinuity 7, the upper wall surface 1, and the lower wall surface 11. A multi-link transmission mechanism is connected between the upper slide rail skin structure 3, the lower slide rail skin structure 9, and the skin structure 803 of the parallel-channel flow controller wall surface;

[0046] The multi-link transmission mechanism is connected to the parallel-channel flow controller 8 and is used to control the movement of the parallel-channel flow controller 8 when the airflows in the parallel channels converge, so as to achieve continuous adjustment and start / stop at any time of the converging airflows. Moreover, the movement of the parallel-channel flow controller 8 can drive the multi-link transmission mechanism, thereby changing the wall surface shape of the parallel-channel flow controller 8.

[0047] Specifically, the key technical details of the parallel-channel flow controller device based on multi-link transmission in the embodiments of the present invention are as follows:

[0048] The multi-link mechanisms are symmetrically arranged. There are at least two groups of multi-link mechanisms, which are distributed on both sides along the perpendicular bisector of the line connecting the centers of the main axis 801 of the flow controller and the center of the support base 809. The two groups of multi-link mechanisms can move to a symmetric or asymmetric form to meet different wall surface shape requirements, and ensure the movement synchronization and the stability of the surface transformation.

[0049] Sealing and airflow optimization: An elastic metal sealing ring is provided at the contact between the skin structure 803 and the channel wall surface to ensure dynamic sealing; the smooth transition between the slide rail-slider device and the skin structure profile and the channel wall surface reduces the airflow resistance.

[0050] Material and sensor configuration: The skin structure 803 is made of shape memory alloy to enhance the flexibility of the surface transformation; speed and torque sensors are provided on the drive shaft to monitor and feedback the movement state in real time.

[0051] In a second aspect, the embodiments of the present invention disclose a design method for a parallel-channel flow controller based on multi-link transmission, including a parallel-channel flow controller 8 and at least two parallel channels, as Figure 1 and 2 shown. The method further includes:

[0052] S1. Construct a parallel channel. The parallel channel is a closed space surrounded by an upper wall surface 1, a lower wall surface 11, side wall surfaces (6, 12), and a wall thickness discontinuity 7. An upper slide rail-slider device 2 and a lower slide rail-slider 10 are respectively arranged on the upper wall surface 1 and the lower wall surface 11, and an upper slide rail skin structure 3 and a lower slide rail skin structure 9 are respectively arranged in the spaces on both sides of the upper slide rail-slider device 2 and the lower slide rail-slider 10.

[0053] S2. Install the parallel-channel flow controller 8. Install the parallel-channel flow controller 8 at the wall thickness discontinuity 7 between the parallel channels, so that the parallel-channel flow controller 8 is located in the closed space jointly formed by the wall thickness discontinuity 7, the upper wall surface 1, and the lower wall surface 11. A multi-link transmission mechanism is connected between the upper slide rail skin structure 3 and the lower slide rail skin structure 9.

[0054] S3. Airflow regulation and wall surface morphology transformation. The multi-link transmission mechanism is connected to the parallel-channel flow controller 8. When the airflow in the parallel channels converges, the movement of the parallel-channel flow controller 8 is controlled to achieve continuous regulation and instant start / stop of the converging airflow. The movement of the parallel-channel flow controller 8 drives the multi-link transmission mechanism to transform the wall surface morphology of the parallel-channel flow controller 8 and maintain a sealed state during the movement.

[0055] Specifically, Figure 3 These are the three views of the design method of the parallel-channel flow controller based on multi-link transmission in the embodiments of the present invention, including the front view, right view, and top view.

[0056] Figure 4 These are the end view and sectional view of the design method of the parallel-channel flow controller based on multi-link transmission in the embodiments of the present invention. Figure 5 It is Figure 4 The partial view of part Ⅰ in the sectional view of

[0057] Figure 6 These are the partial schematic diagrams of the parallel-channel flow controller in the design method of the parallel-channel flow controller based on multi-link transmission in the embodiments of the present invention.

[0058] In a specific embodiment, in combination with Figure 5 and Figure 6 , the upper rail skin structure 3 and the lower rail skin structure 9 form the skin structure 803. The parallel-channel flow controller 8 is composed of a flow controller main shaft 801, a skin structure 803, and a multi-link mechanism. A support seat 809 is arranged inside the skin structure 803. The multi-link mechanism includes a drive shaft 808, a hydraulic rod 806, a transmission pin shaft 804, a transmission link 805, follower rockers (802, 807), a positioning pin shaft 810, and a driven pin shaft 811. One end of the drive shaft 808 is rotatably connected to the support seat 809 through the drive shaft 808 with the hydraulic rod 806. The other end of the hydraulic rod 806 is connected to the transmission link 805 through the transmission pin shaft 804. The other end of the transmission link 805 and the follower rockers (802, 807) are rotatably connected to the skin structure 803 through the positioning pin shaft 810. The other ends of the follower rockers (802, 807) are rotatably connected to the flow controller main shaft 801 through the driven pin shaft 811.

[0059] In combination with Figure 3 , the drive mechanism 4 drives the upper rail slider device 2, the lower rail slider 10, and the flow controller main shaft 801 to translate along the rail through an external drive shaft 403, so as to adjust the parallel-channel flow controller 8.

[0060] During the translation of the main shaft 801 of the flow controller along the slide rail, the driven pin shaft 811 is driven to displace. At the same time, the rotation of the drive shaft 808 and the telescopic movement of the hydraulic rod 806 are controlled by an external drive device, so as to drive the displacement of the positioning pin shaft 810 in the skin structure 803, realizing the arbitrary transformation of the surface of the skin structure 803 into various different forms of convex, flat and concave.

[0061] Preferably, the multi-link mechanism is set to at least two groups, and at least two groups of multi-link mechanisms are arranged on both sides of the perpendicular bisector of the connection line between the center of the main shaft 801 of the flow controller and the center of the support seat 809, so as to realize that the two groups of multi-link mechanisms can move to a symmetric or asymmetric form. In this embodiment, the multi-link mechanism is set to two groups.

[0062] Furthermore, a drive mechanism 4 for controlling the operation of the parallel-channel flow controller 8 is arranged on the outer side wall of the wall thickness discontinuity 7. The drive mechanism 4 is composed of an external drive shaft 403, a drive rod 402, a drive shaft 401, a transmission rod 404 and a positioning shaft 405 connected to each other. The external drive shaft 403 is connected to one end of the drive rod 402, one end of the drive shaft 401 is connected to the other end of the drive rod 402, the other end of the drive shaft 401 is connected to the transmission rod 404, and the other end of the transmission rod 404 is connected to the multi-link mechanism through the positioning shaft 405.

[0063] As a preferred embodiment, referring to Figure 4 , the profile lines of the upper wall surface 1 and the lower wall surface 11 of the parallel channel are both set as arbitrary two-dimensional straight lines or curves. The profile styles of the upper slide rail slider device 2, the lower slide rail slider 10, the upper slide rail skin structure 3 and the lower slide rail skin structure 9 and the upper wall surface 1 and the lower wall surface 11 respectively adopt a smooth transition design.

[0064] Specifically, in combination with Figure 4 and Figure 5 , the present invention is controlled by an arbitrary power system to drive the drive mechanism 4 to drive the upper slide rail slider device 2, the lower slide rail slider 10 and the main shaft 801 of the flow controller to translate along the slide rail, realizing continuous adjustment of the parallel-channel flow controller 8; the external drive device can realize start and stop at any time by controlling the rotation speed of the drive shaft 808. The present invention installs a multi-link transmission mechanism composed of a drive shaft 808, a hydraulic rod 806, a transmission pin shaft 804, a transmission connecting rod 805, follower rockers (802, 807), a positioning pin shaft 810 and a driven pin shaft 811 on the support seat 809 inside the skin structure 803, wherein the driven pin shaft 811 is located inside the main shaft 801 of the flow controller. During the translation of the main shaft 801 of the flow controller, the driven pin shaft 811 is driven to displace. At the same time, the rotation of the drive shaft 808 and the telescopic movement of the hydraulic rod 806 are controlled by an arbitrary power device, so as to realize the purpose of driving the displacement of the positioning pin shaft 810 in the skin structure 803, and realizing the arbitrary transformation of the surface of the skin structure 803 into different forms such as convex, flat and concave.

[0065] Further, the present invention realizes the control transformation of the position and profile of the main shaft 801 of the flow controller simultaneously. Referring to Figure 1 , the parallel-channel flow controller 8 of the present invention is installed in a closed space surrounded by the upper wall surface 1, the lower wall surface 11, the side wall surfaces (6, 12) and the wall thickness discontinuity 7 of the parallel channels; an upper slide rail slider device 2 and a lower slide rail slider 10 are arranged at a certain position from the entrance on the upper wall surface 1 and the lower wall surface 11, and an upper slide rail skin structure 3 and a lower slide rail skin structure 9 are arranged in the spaces on both sides of the slider; the driving mechanism 4 is installed on the control console 5 outside the parallel channels.

[0066] In a specific embodiment, referring to Figure 1 、 Figure 5 and Figure 6 , the movement steps of the parallel-channel flow controller 8 of the present invention are as follows:

[0067] The driving mechanism 4 is controlled by any power system to drive the upper slide rail slider device 2, the lower slide rail slider 10 and the main shaft 801 of the flow controller to translate along the slide rail, realizing the continuous adjustment of the parallel-channel flow controller 8; the external driving device can start and stop at any time by controlling the rotation speed of the driving shaft 808;

[0068] A multi-link transmission mechanism composed of a driving shaft 808, a hydraulic rod 806, a transmission pin shaft 804, a transmission connecting rod 805, follower rockers (802, 807), a positioning pin shaft 810 and a driven pin shaft 811 is installed on the support seat 809 inside the skin structure 803, wherein the driven pin shaft 811 is located inside the main shaft 801 of the flow controller. During the translation of the main shaft 801 of the flow controller, the displacement of the driven pin shaft 811 is driven, and at the same time, the rotation of the driving shaft 808 and the telescopic movement of the hydraulic rod 806 are controlled by any power device, so as to achieve the purpose of driving the displacement of the positioning pin shaft 810 inside the skin structure 803, and realizing the arbitrary transformation of the profile of the skin structure 803 into different forms such as convex, flat and concave;

[0069] The parallel-channel flow controller 8 designed by the present invention is installed at the wall thickness discontinuity 7 between any two channels of the parallel channels, and the parallel-channel flow controller 8 is in full contact with the upper wall surface 1 and the lower wall surface 11 of the parallel channels with a two-dimensional profile.

[0070] From Figure 5 the partial view in Figure Ⅰ , it can be seen that when the air flow in the parallel channels converges, the parallel-channel flow controller 8 can realize the continuous adjustment and start / stop at any time of the converging air flow through the movement steps of the present invention; and during the movement of the parallel-channel flow controller 8, the purpose of simultaneously changing the wall surface form of the parallel-channel flow controller 8 can be realized.

[0071] The present invention designs structures such as the upper slide rail slider device 2, the lower slide rail slider 10, the upper slide rail skin structure 3, and the lower slide rail skin structure 9, and controls and adjusts the main shaft 801 of the flow controller to translate along the slide rail in the parallel channels, replacing the traditional rotation method, and solving the interference problem caused by the movement of the flow controller in the flow channels with any two-dimensional straight or curved profile lines.

[0072] The present invention designs the surface patterns of structures such as the upper slide rail slider device 2, the lower slide rail slider 10, the upper slide rail skin structure 3, and the lower slide rail skin structure 9 to be smoothly transitioned with the upper wall surface 1 and the lower wall surface 11 respectively, solving the problem of the obstruction of the air flow in the parallel channels caused by the complexity of the mechanism of the parallel flow controller.

[0073] Install any metal sealing device between the skin structure 803 of the present invention and the upper wall surface 1 and the lower wall surface 11, which can ensure the airtight characteristics inside the channels when the flow controller 8 in the parallel channels moves.

[0074] The embodiments of the present invention can be applied to scenarios such as the flow field regulation of the hypersonic vehicle inlet and the air flow distribution of the spacecraft thermal management system. For example, in the suppression of inlet distortion, the adjustment piece is driven by a multi-link mechanism to deflect asymmetrically to compensate for the non-uniform oncoming flow; in thermal management, the opening degrees of multiple channels are coordinated to achieve balanced distribution of thermal loads.

[0075] The above is only the specific implementation manner of the present invention, enabling those skilled in the art to understand or implement the present application. In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as 'upper', 'lower', 'left', 'right', etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0076] In addition, it should be noted that for the convenience of those skilled in the art to understand or implement the present application, the schematic diagram in the legend only shows a special case where the number of parallel channels is 2, that is, only 1 parallel channel flow controller is shown. It should be noted that as long as the flow controller of the present invention is implemented in parallel channels with no less than 2 parallel channels, that is, the number of parallel channel flow controllers is no less than 1, it is within the protection scope of the present invention; unless otherwise clearly specified and limited, the terms 'installation','setting', 'connection' should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0077] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with technical features having similar functions (but not limited to) disclosed in the present invention.

Claims

1. A design method of a parallel-channel flow controller based on multi-link transmission, including a parallel-channel flow controller and at least two parallel channels, characterized in that, The method includes: Constructing a parallel channel, which is an enclosed space formed by an upper wall surface, a lower wall surface, side wall surfaces, and a wall thickness discontinuity. An upper slide rail slider device and a lower slide rail slider are respectively arranged on the upper wall surface and the lower wall surface, and an upper slide rail skin structure and a lower slide rail skin structure are respectively arranged in the spaces on both sides of the upper slide rail slider device and the lower slide rail slider; Installing a parallel channel flow controller, which is installed at the wall thickness discontinuity between the parallel channels, such that the parallel channel flow controller is located in the enclosed space jointly formed by the wall thickness discontinuity, the upper wall surface, and the lower wall surface. A multi-link transmission mechanism is connected between the upper slide rail skin structure and the lower slide rail skin structure; Airflow regulation and wall surface morphology transformation. The multi-link transmission mechanism is connected to the parallel channel flow controller. When the airflow in the parallel channels converges, the movement of the parallel channel flow controller is controlled to achieve continuous regulation and on-demand start / stop of the converging airflow. When the parallel channel flow controller moves, the multi-link transmission mechanism is driven by a drive shaft to change the wall surface morphology of the parallel channel flow controller, and the sealed state is maintained during the movement.

2. The design method of the parallel channel flow controller based on multi-link drive according to claim 1, wherein, The upper slide rail skin structure, the lower slide rail skin structure, and the wall surface skin structure of the parallel channel flow controller constitute a skin structure, and the parallel channel flow controller is composed of a flow controller main shaft, the skin structure, and the multi-link mechanism; A support seat is arranged inside the skin structure, and the multi-link mechanism includes a drive shaft, a hydraulic rod, a transmission pin shaft, a transmission link, a follower rocker, a positioning pin shaft, and a driven pin shaft; One end of the drive shaft is rotationally connected to the hydraulic rod through the drive shaft on the support seat, the other end of the hydraulic rod is connected to the transmission link through the transmission pin shaft, the other end of the transmission link and the follower rocker are rotationally connected to the skin structure through the positioning pin shaft, and the other end of the follower rocker is rotationally connected to the flow controller main shaft through the driven pin shaft.

3. The design method of the parallel channel flow controller based on multi-link transmission according to claim 2, characterized in that, The multi-link mechanism is arranged in at least two groups, and at least two groups of the multi-link mechanisms are arranged on both sides of the perpendicular bisector of the line connecting the center of the flow controller main shaft and the center of the support seat, such that the two groups of the multi-link mechanisms can move to a symmetric or asymmetric form.

4. The design method of the parallel channel flow controller based on multi-link transmission according to claim 2, characterized in that, A drive mechanism for controlling the operation of the parallel channel flow controller is arranged on the outer side wall of the wall thickness discontinuity. The drive mechanism is composed of an external drive shaft, a drive rod, a transmission shaft, a transmission rod, and a positioning shaft connected to each other. The external drive shaft is connected to one end of the drive rod, one end of the transmission shaft is connected to the other end of the drive rod, the other end of the transmission shaft is connected to the transmission rod, and the other end of the transmission rod is connected to the multi-link mechanism through the positioning shaft.

5. The design method of the parallel channel flow controller based on multi-link transmission according to claim 4, characterized in that, The drive mechanism drives the upper slide rail slider device, the lower slide rail slider, and the flow controller main shaft to translate along the slide rail through the external drive shaft, so as to adjust the parallel channel flow controller.

6. The design method of the parallel channel flow controller based on multi-link transmission according to claim 4, characterized in that, During the translation of the main shaft of the flow controller along the slide rail, the driven pin shaft is driven to displace. At the same time, the rotation of the drive shaft and the telescopic movement of the hydraulic rod are controlled through the drive mechanism to drive the displacement of the positioning pin shaft in the skin structure, so as to realize the arbitrary transformation of the surface shape of the skin structure into various different forms of convex, flat and concave.

7. The design method of the parallel channel flow controller based on multi-link drive according to claim 1, characterized in that The profile lines of the upper wall surface and the lower wall surface of the parallel channel are both set as arbitrary two-dimensional straight lines or curves.

8. The design method of the parallel channel flow controller based on multi-link transmission according to claim 1, characterized in that, The surface styles of the upper slide rail slider device, the lower slide rail slider, the upper slide rail skin structure and the lower slide rail skin structure are respectively designed with smooth transitions between the upper wall surface and the lower wall surface.

9. A parallel-channel flow controller device based on multi-link transmission, characterized in that, It includes at least two parallel channels and a parallel channel flow controller installed between the parallel channels, and is characterized in that it further includes: The parallel channel is a closed space surrounded by an upper wall surface, a lower wall surface, a side wall surface and a wall thickness discontinuity. An upper slide rail slider device and a lower slide rail slider are respectively arranged on the upper wall surface and the lower wall surface, and an upper slide rail skin structure and a lower slide rail skin structure are respectively arranged in the spaces on both sides of the upper slide rail slider device and the lower slide rail slider; The parallel channel flow controller is installed at the wall thickness discontinuity between the parallel channels and is located in the closed space jointly formed by the wall thickness discontinuity, the upper wall surface and the lower wall surface. A multi-link transmission mechanism is connected between the upper slide rail skin structure and the lower slide rail skin structure; The multi-link transmission mechanism is connected to the parallel channel flow controller and is used to control the movement of the parallel channel flow controller to realize continuous adjustment and start-stop at any time of the converging air flow when the air flow in the parallel channel converges. Moreover, the movement of the parallel channel flow controller can drive the multi-link transmission mechanism, thereby changing the wall surface shape of the parallel channel flow controller.

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