Variable bionic non-smooth surface resistance reduction testing device

Abstract

The utility model discloses a variable bionic non-smooth surface resistance reduction testing device, which comprises a bionic non-smooth surface variable module, a distance adjusting module and a motor driving module, and is characterized in that the bionic non-smooth surface variable module comprises a plurality of testing blocks for resistance reduction performance testing, and each testing block is connected with the distance adjusting module; the distance adjusting module is used for adjusting the distance of the bionic non-smooth surface variable module; comprising a bottom plate, a supporting seat, an active moving block, a plurality of passive moving blocks and a plurality of limiting plates; the supporting seat comprises a left supporting seat and a right supporting seat which are connected with the bottom plate; the plurality of passive moving blocks are sequentially connected with the left supporting seat; the limiting plate is sequentially fixed on the left supporting seat, the plurality of passive moving blocks and the active moving block; the motor driving module is fixed to the bottom plate, connected with the distance adjusting module and used for driving the distance adjusting module. The device has small damage to original equipment, is simple to process and easy to operate, and can reduce the material cost and the processing cost.

Description

Technical Field

[0001] The utility model belongs to the field of bionic non-smooth surface structures, and particularly relates to a variable bionic non-smooth surface drag reduction test device. Background Technique

[0002] With the increasingly serious energy consumption, the energy problem has become an issue that the world must face and solve, and energy conservation and consumption reduction are extremely urgent. Reducing the resistance suffered by an object can reduce energy consumption and improve energy utilization efficiency. The surface friction drag accounts for a large proportion. For example, the surface friction drag of a ship accounts for about 50% of the total drag, and the surface friction drag of an underwater vehicle even accounts for 70% of the total drag. In the long-distance transportation of natural gas and oil, almost all the power of the pumping stations is used to overcome the fluid surface friction drag.

[0003] When a fluid flows past an object in a real environment, many types of drag may be generated depending on different situations, such as friction drag, form drag, induced drag, and wave drag, etc. The current drag reduction technologies mainly focus on how to reduce the negative impacts of friction drag and form drag. For form drag, organisms in nature generally make their own forms as streamlined as possible to reduce pressure drag. For friction drag, different organisms adopt different strategies.

[0004] However, most traditional bionic drag reduction studies are based on simulation or fixed structures for testing, and each aspect has certain limitations. Therefore, it is particularly important to research and design a small, low-cost, simple-structured, and convenient-to-test variable bionic non-smooth surface drag reduction test device. Content of the Utility Model

[0005] The utility model aims at the deficiencies of the prior art and provides a variable bionic non-smooth surface drag reduction test device.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] A variable bionic non-smooth surface drag reduction test device includes a bionic non-smooth surface variable module, a distance adjustment module, and a motor drive module, wherein:

[0008] The bionic non-smooth surface variable module includes a variety of test blocks for drag reduction performance testing, and each test block is connected to the distance adjustment module;

[0009] The distance adjustment module is used to adjust the spacing of the bionic non-smooth surface variable module; it includes a bottom plate, a support seat, a driving moving block, a plurality of driven moving blocks, and a plurality of limiting plates;

[0010] The support seat includes a left support seat and a right support seat, both of which are connected to the bottom plate;

[0011] The multiple passive moving blocks are sequentially connected to the left support seat, and the limiting plates are sequentially fixed on the left support seat, the multiple passive moving blocks and the active moving block;

[0012] The motor driving module is fixed on the bottom plate and connected to the distance adjusting module for driving the distance adjusting module.

[0013] As a preferred technical solution, there are three types of the test blocks, namely replaceable V-shaped blocks, replaceable blade-shaped blocks and replaceable U-shaped blocks, which are three different types of test blocks.

[0014] As a preferred technical solution, bearing holes are respectively formed inside the support seats, and both side bearings are fixed inside the corresponding support seats through shaft retaining rings.

[0015] As a preferred technical solution, rectangular through holes are respectively arranged inside the multiple passive moving blocks.

[0016] As a preferred technical solution, spring fixing holes for placing internal springs are respectively arranged inside the multiple passive moving blocks. The spring fixing holes sequentially penetrate through the multiple passive moving blocks and the active moving block, and threaded holes are arranged inside the active moving block.

[0017] As a preferred technical solution, the distance adjusting module further includes a lead screw and a spring rod. The lead screw is mounted on both side bearings and connected to the threaded hole arranged inside the active moving block, and the spring rod is fixed on the support seat.

[0018] As a preferred technical solution, internal springs and circular springs are respectively mounted on the spring rod.

[0019] As a preferred technical solution, a hydrogel diaphragm is adhered above the bionic non-smooth surface variable module.

[0020] As a preferred technical solution, the motor driving module includes a motor, a coupling and a motor support seat. The motor support seat is fixed on the bottom plate, the motor is fixed on the motor support seat and connected to the lead screw through the coupling.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model can select different test blocks according to test requirements for drag reduction performance testing, further expanding the application range.

[0023] 2. The utility model realizes the adjustment of the distance between bionic non-smooth surfaces through the power transmission formed by the internal spring of the distance adjustment module. After the rectangular block inside the passive moving block is in force balance, it moves at an equal distance, so as to complete the resistance performance test of bionic non-smooth surfaces at different distances.

[0024] 3. The hydrogel diaphragm attached above the variable module of the bionic non-smooth surface of the utility model can prevent fluids and impurities from penetrating into the internal structure of the bionic non-smooth surface.

[0025] 4. The utility model can be directly installed on the surface of fluid equipment, realizing complex functional requirements with a simple structural design, causing little damage to the original equipment, being simple to process and easy to operate, and reducing material and processing costs. Brief Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the utility model.

[0027] Figure 2 is a partial cross-sectional view of an embodiment of the utility model.

[0028] Figure 3 is a schematic diagram of the transformed bionic non-smooth surface of an embodiment of the utility model.

[0029] Figure 4 is a top view and a cross-sectional view of an embodiment of the utility model.

[0030] Figure 5 is a schematic diagram of a bionic non-smooth surface drag reduction test device of an embodiment of the utility model equipped with different test blocks.

[0031] As shown in the figure by the reference numerals:

[0032] Base plate 1; Left support seat 2; Replaceable V-shaped block 3; Lead screw 4; Right support seat 5; Coupling 6; Driving motor 7; Motor support seat 8; Spring rod 9; Circular spring 10; Active moving block 11; Passive moving block 12; Internal spring 13; Left side bearing 14; Left end shaft retaining ring 15; Fixed plate 16; Limit plate 17; Limit screw 18; Right side bearing 19; Right end shaft retaining ring 20; Replaceable blade-shaped block 21; Replaceable U-shaped block 22. Detailed Embodiment

[0033] The following further illustrates the present utility model in conjunction with the drawings and specific embodiments, but the present utility model is not limited to these embodiments. The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present utility model, and those skilled in the art can fully understand the present utility model without the description of these details.

[0034] This utility model mainly simplifies the fine three-dimensional tooth-shaped structure on the surface of a bionic shark into rib structures of different shapes, and then obtains the best drag reduction ability under certain conditions (such as fluid medium and fluid velocity) by flexibly adjusting the shapes and sizes of different rib structures, and proposes a variable bionic non-smooth surface drag reduction test device.

[0035] A variable bionic non-smooth surface drag reduction test device according to an embodiment of the present application includes a bionic non-smooth surface variable module, a distance adjustment module, and a motor drive module. Each module cooperates with each other to adjust the distance of the bionic non-smooth surface.

[0036] As Figure 1 、 Figure 2 and Figure 5 shown, in the embodiment of the present application, the bionic non-smooth surface variable module includes a variety of test blocks for drag reduction performance testing, namely a replaceable V-shaped block 3, a replaceable blade-shaped block 21, and a replaceable U-shaped block 22, and is connected to the distance adjustment module through a fixing plate 16.

[0037] As Figures 1 to 4 shown, in the embodiment of the present application, the distance adjustment module includes a bottom plate 1, a support seat, a driving moving block 11, a plurality of driven moving blocks 12, and a plurality of limiting plates 17. The support seat includes a left support seat 2 and a right support seat 5. The test block can cooperate with the dovetail grooves opened on the left support seat 2, the driving moving block 11, and the driven moving blocks 12, and is connected through a fixing plate 16. According to the test requirements, the above three different types of test blocks can be selected for drag reduction performance testing. Four driven moving blocks 12 are provided, and rectangular through holes are provided inside, and are sequentially connected to the left support seat 2. Five limiting plates 17 are provided and are sequentially fixed to the left support seat 2, the four driven moving blocks 12, and the driving moving block 11 through limiting screws 18.

[0038] In the embodiment of the present application, the distance adjustment module further includes a lead screw 4, a circular spring 10, a spring rod 9, a left bearing 14, a right bearing 19, a left end shaft retaining ring 15, and an internal spring 13. The left support seat 2 is connected to the bottom plate 1 through a limiting screw 18. A bearing hole is opened inside the left support seat 2, and the left bearing 14 is fixed inside the left support seat 2 through the left end shaft retaining ring 15. Spring fixing holes are opened inside the four driven moving blocks 12, and the internal spring 13 is placed in the spring fixing holes.

[0039] The right support base 5 is connected to the bottom plate 1 by a limit screw 18, and has a bearing hole inside. The right bearing 19 is fixed inside the right support base 5 by a right-end shaft retaining ring 20. The lead screw 4 is installed on the left bearing 14 and the right bearing 19. The active moving block 11 is internally provided with a threaded hole and is connected to the lead screw 4. The spring rod 9 is fixed on the left support base 2 and the right support base 5, and sequentially passes through 4 passive moving blocks 12 and the active moving block 11 through spring fixing holes. Internal springs 13 and circular springs 10 are installed on the spring rod 9. The distance adjustment module is used to adjust the distance between the bionic non-smooth surface variable modules.

[0040] As Figure 1 and Figure 2 shown, in the embodiment of the present application, the motor drive module includes a motor 7, a coupling 6 and a motor support base 8. The motor support base 8 is fixed to the bottom plate 1 by screws. The motor 7 is fixed on the motor support base 8 and is connected to the lead screw 4 through the coupling 6 for driving the distance adjustment module.

[0041] Further, in the embodiment of the present application, a hydrogel diaphragm is adhered above the bionic non-smooth surface variable module. Due to the ductility of the hydrogel itself, it can effectively isolate the external fluid environment and the surface of the instrument. When it is necessary to test the bionic non-smooth surface, the motor 7 is driven to drive the lead screw 4 to rotate, thereby driving the active moving block 11 to move back and forth. Due to the presence of the internal spring 13 between the active moving block 11 and the passive moving blocks 12, the passive moving blocks 12 can move equidistantly between each other, and between the active moving block 11 and the passive moving blocks 12, so that the distance between the bionic non-smooth surfaces can be adjusted, and the resistance performance test of the bionic non-smooth surface at different distances can be completed.

[0042] The above is only a description of the preferred embodiments of the present invention, but it cannot be understood as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to change. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A variable bionic non-smooth surface drag reduction test device, characterized in that: It includes a bionic non-smooth surface variable module, a distance adjustment module and a motor drive module, wherein: The bionic non-smooth surface variable module includes a plurality of test blocks for drag reduction performance testing, and each of the test blocks is connected to the distance adjustment module; The distance adjustment module is used to adjust the distance between the bionic non-smooth surface variable modules; it includes a base plate, a support seat, an active moving block, a plurality of passive moving blocks and a plurality of limit plates; The support base includes a left support base and a right support base, both of which are connected to the bottom plate; The plurality of passive moving blocks are connected to the left supporting seat in sequence, and the limit plate is fixed to the left supporting seat, the plurality of passive moving blocks and the active moving block in sequence; The motor driving module is fixed on the bottom plate, connected to the distance adjusting module, and used for driving the distance adjusting module.

2. A variable bionic non-smooth surface drag reduction test device according to claim 1, characterized in that: There are three types of test blocks, namely, replaceable V-shaped blocks, replaceable blade-shaped blocks and replaceable U-shaped blocks.

3. The variable bionic non-smooth surface drag reduction testing device according to claim 1, characterized in that: The support seats are provided with bearing holes inside, and the bearings on both sides are fixed inside the corresponding support seats through shaft retaining rings.

4. The variable bionic non-smooth surface drag reduction testing device according to claim 1, characterized in that: Rectangular through holes are arranged inside the plurality of passive moving blocks.

5. The variable bionic non-smooth surface drag reduction testing device according to claim 1, characterized in that: The plurality of passive moving blocks are each provided with a spring fixing hole for placing an internal spring, the spring fixing hole sequentially passes through the plurality of passive moving blocks and the active moving block, and the active moving block is provided with a threaded hole.

6. The variable bionic non-smooth surface drag reduction testing device according to claim 5, characterized in that: The distance adjustment module also includes a screw rod and a spring rod. The screw rods are installed on the bearings on both sides and are connected to the threaded holes arranged inside the active moving block. The spring rod is fixed on the support seat.

7. The variable bionic non-smooth surface drag reduction testing device according to claim 6, characterized in that: The spring rods are both equipped with internal springs and circular springs.

8. The variable bionic non-smooth surface drag reduction testing device according to claim 1, characterized in that: A hydrogel membrane is adhered above the bionic non-smooth surface variable module.

9. A variable bionic non-smooth surface drag reduction testing device according to claim 1 or 6, characterized in that: The motor drive module comprises a motor, a coupling and a motor support seat, wherein the motor support seat is fixed on a bottom plate, the motor is fixed on the motor support seat and is connected to the lead screw via the coupling.

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