CN116161163A - Intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on adjustable tensioning integral structure - Google Patents
Intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on adjustable tensioning integral structure Download PDFInfo
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- CN116161163A CN116161163A CN202310124752.8A CN202310124752A CN116161163A CN 116161163 A CN116161163 A CN 116161163A CN 202310124752 A CN202310124752 A CN 202310124752A CN 116161163 A CN116161163 A CN 116161163A
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- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 229920000620 organic polymer Polymers 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 210000003491 skin Anatomy 0.000 claims 9
- 210000002615 epidermis Anatomy 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 22
- 230000008859 change Effects 0.000 abstract description 9
- 230000001427 coherent effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000004044 response Effects 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 abstract description 6
- 230000009189 diving Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/13—Hulls built to withstand hydrostatic pressure when fully submerged, e.g. submarine hulls
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
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Abstract
The invention provides an intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on an adjustable tensioning integral structure. An intermediate layer formed by arranging a plurality of adjustable tensioning integral structure units according to a certain rule is arranged between the inner flexible substrate and the outer flexible surface, and the adjustable tensioning integral structure is fixedly connected with the inner flexible substrate and the outer flexible surface. The intelligent skin is laid on the surface of the submarine, according to the change of the navigational speed and the diving depth, the magnetic force between the electromagnet and the sliding block can be adjusted by controlling the current of the electromagnet, the distance between the electromagnet and the sliding block is changed, the deformation quantity of the skin is regulated and controlled, the rigidity and damping characteristics of the skin are changed, the flow field around the surface of the skin is influenced, the turbulence coherent structure of the boundary layer is controlled, the fluid resistance and the noise are effectively reduced, better response is made to different flow field environments, and the good noise reduction and drag reduction effects under various navigational speeds and diving depths are ensured.
Description
Technical Field
The invention belongs to an intelligent drag-reducing noise-reducing skin, in particular to an intelligent variable-rigidity flexible drag-reducing noise-reducing skin structure based on an adjustable tensioning integral structure, and belongs to the fields of energy conservation, emission reduction, traffic equipment and the like.
Background
The underwater vehicle has extremely important strategic significance in the aspects of maintaining national safety, detecting ocean and the like, and rapidity, cruising ability and the like are important indexes for evaluating the performance of the underwater vehicle. With the continuous development of science and technology, higher requirements are put forward on the rapidity, cruising ability and stealth characteristics of the submarine. Therefore, how to improve the drag reduction and noise reduction performance of the submarine becomes a research hotspot in the drag reduction and noise reduction field of various countries.
When the speed of the submarine is increased, the fluid resistance and noise can be increased sharply, and the skin laid on the surface of the submarine shell is one of effective means for reducing the resistance and noise of the submarine, and the skin can effectively inhibit and absorb the pressure pulsation of the turbulent flow field during high-speed navigation, so that the effective control of the resistance and noise can be realized. Meanwhile, the cost required by the skin technology is relatively reduced, so that the method has wide application prospect.
Disclosure of Invention
The invention relates to an intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure based on an adjustable tension integral structure, which aims to meet the drag-reduction noise-reduction requirements of a submarine. The skin can control the current of the electromagnet in the electromagnetic integrated guide shell in the cabin, adjust the magnetic force between the electromagnet and the sliding block, and change the distance between the electromagnet and the sliding block, so that the rope drives the adjustable tensioning integral structure to deform, the rigidity and damping characteristics of the skin are changed, the flow field around the surface of the skin is further influenced, the turbulent flow coherent structure of the boundary layer is controlled, and the resistance and noise of the submarine under different navigational speeds are effectively reduced.
The purpose of the invention is realized in the following way: comprises an inner flexible substrate, an adjustable stretching integral structure and an outer flexible skin. An intermediate layer formed by arranging a plurality of adjustable stretching integral structure units according to a certain rule is arranged between the inner flexible substrate and the outer flexible surface, and the adjustable stretching integral structure is fixedly connected with the inner flexible substrate and the outer flexible surface. In addition, tiny through holes are uniformly distributed on the outer flexible skin, so that the balance of the inner pressure and the outer pressure of the skin is ensured.
As preferable: the inner flexible substrate, each layer of honeycomb structure and the outer flexible skin are all made of polyurethane.
As preferable: the adjustable stretching integral structure unit comprises a three-layer honeycomb structure, ropes, sliding blocks, an electromagnetic integrated guide shell and a high-pressure waterproof sealing ring. The sliding block is made of an external resin material and an internal iron core. The honeycomb structures of all layers are fixedly connected, the ropes are fixedly connected with the honeycomb structures, the ropes are fixedly connected with the sliding blocks, the electromagnetic integrated guide shell is in threaded connection with the submarine shell, and the electromagnetic integrated guide shell is in threaded connection with the high-pressure waterproof sealing ring.
As preferable: the honeycomb structure material is an organic polymer material with elastic damping characteristic, the rope material is a material with small deformation and high strength, and the outer material of the sliding block is a resin material with smooth surface and no magnetic permeability.
Compared with the prior art, the invention has the beneficial effects that: the invention designs a three-layer honeycomb structure with different sizes and rigidities aiming at three typical navigational speeds of low speed, medium speed and high speed, the multi-layer honeycomb structure, a rope, a sliding block, an electromagnetic integrated guide shell and a high-pressure waterproof sealing ring form an adjustable tensioning integral structure unit together, and meanwhile, a plurality of adjustable tensioning integral structure units distributed according to a certain rule are connected with upper and lower flexible surfaces to form an intelligent rigidity-variable flexible drag reduction noise reduction skin structure. Compared with the traditional skin with unchangeable rigidity and damping, the skin can adjust the magnetic force between the electromagnet and the sliding block by controlling the current of the electromagnet in the electromagnetic integrated guide shell in the cabin, and change the distance between the electromagnet and the sliding block, so that the deformation of the skin is changed, the rigidity and the damping characteristic of the skin are regulated and controlled, better response is generated to excitation of a flow field, the turbulent flow coherent structure of the boundary layer is controlled, and the good resistance and noise reduction effects are always kept at different cruising speeds. The system has the advantages of quick response, excellent controllability and stability, and can achieve the aim of intelligentization of drag reduction and noise reduction functions. In addition, the skin has a plurality of adjustable structural parameters, can be customized according to the actual use environment, and has simple structure and easy manufacture.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the adjustable tension monolith structure unit of FIG. 1;
FIG. 3 is a schematic representation of drag reduction characteristics of the present invention;
FIG. 4 is a schematic diagram of noise reduction features of the present invention;
the reference numerals in the figures illustrate: 1. the adjustable tensioning integral structure unit comprises an outer flexible skin, an inner flexible substrate, a submarine shell, an electromagnetic integral guide shell, a sliding block, a high-pressure waterproof sealing ring, ropes, a lower honeycomb structure, a middle honeycomb structure, an upper honeycomb structure, an intelligent rigidity-variable flexible drag-reduction noise-reduction skin structure, a turbulence excitation structure, an inner noise structure and an outer noise structure.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in FIG. 1, the intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure based on the adjustable tension integral structure comprises an inner flexible substrate, the adjustable tension integral structure and an outer flexible skin. The inner flexible substrate 3 and the outer flexible skin 2 are filled by a plurality of arrays of adjustable tensioning integral structure units 1, and the adjustable tensioning integral structure is fixedly connected with the inner flexible substrate 3 and the outer flexible skin 2 respectively, so that an intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure based on the adjustable tensioning integral structure is formed.
Specifically, the inner flexible substrate 3 and the outer flexible skin 2 are made of polyurethane materials with characteristics of flexibility and light and thin texture.
The adjustable tensioning integral structure of the invention is described with reference to fig. 1 and 2, and the adjustable tensioning integral structure unit comprises a three-layer honeycomb structure, a rope, a sliding block, an electromagnetic integrated guide shell and a high-pressure waterproof sealing ring. The adjustable stretching integral structure is fixedly connected with the inner flexible substrate and the outer flexible surface skin, the honeycomb structures are fixedly connected with each other, the ropes are fixedly connected with the honeycomb structures and the ropes are fixedly connected with the sliding blocks, the electromagnetic integrated guide shell is in threaded connection with the submarine shell, and the electromagnetic integrated guide shell is in threaded connection with the high-pressure waterproof sealing ring.
Specifically, each layer of honeycomb structure adopts polyurethane material, the rope material adopts a material with small deformation and high strength, and the external material of the sliding block is a resin material with smooth surface and no magnetic permeability.
The working principle of the invention is as follows:
the function of the adjustable tension monolith structure of the present invention will be described with reference to fig. 1 and 2. An intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure 12 based on an adjustable tensioning integral structure is attached to the outer surface of a submarine shell 4 through an inner flexible substrate 3. When the navigational speed or the submerging depth of the submerging device is changed, the electromagnetic integrated guiding shell 5 in the cabin can be controlled to adjust the magnetic force between the electromagnet and the sliding block and change the distance between the electromagnet and the sliding block, so that the deformation of each layer of honeycomb structure is regulated and controlled, the rigidity and the damping characteristic of the skin are changed, better response is generated to excitation of a flow field, the turbulent flow coherent structure of the boundary layer is controlled, and good resistance and noise reduction effects are ensured. Compared with the existing drag reduction technology, the method has stronger flow field change adaptability.
Drag reducing characteristics of the present invention are described in connection with fig. 3. An intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure 12 based on an adjustable tensioning integral structure is attached to the outer surface of a submarine shell 4 through an inner flexible substrate 3. When the submarine is moved at different navigational speeds or under the diving depth, the skin can adjust the magnetic force between the electromagnet and the sliding block by controlling the current of the electromagnet in the electromagnetic integrated guide shell 5 in the cabin, and change the distance between the electromagnet and the sliding block, so that the deformation of each layer of honeycomb structure is regulated and controlled, the rigidity and damping characteristics of the skin are changed, better response is generated to excitation of a flow field, the turbulent flow coherent structure of a boundary layer is controlled, the device is suitable for different flow field environments, and the device always has a better drag reduction effect.
The noise reduction characteristics of the present invention are described with reference to fig. 4. An intelligent variable-rigidity flexible drag-reduction noise-reduction skin structure 12 based on an adjustable tensioning integral structure is attached to the outer surface of a submarine shell 4 through an inner flexible substrate 3. When the navigational speed or the submerging depth of the submerging device changes, the skin can adjust the magnetic force between the electromagnet and the sliding block by controlling the current of the electromagnet in the electromagnetic integrated guide shell 5 in the cabin, and change the distance between the electromagnet and the sliding block, so as to adjust and control the deformation quantity of each layer of honeycomb structure, change the rigidity and damping characteristic of the skin, further generate better response to the excitation of a flow field, control the boundary layer turbulence coherent structure, and effectively reduce the noise generated by the structural vibration caused by the turbulence excitation 13 under various navigational speeds and submerging depths. In addition, by utilizing the special structure of the skin and the acoustic characteristics of the material composition, the reflection and transmission of the external noise 15 and the internal noise 14 are effectively inhibited, so that a good noise reduction effect is always achieved.
In summary, the invention provides an intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on an adjustable tensioning integral structure for a submarine, which comprises an inner flexible substrate, the adjustable tensioning integral structure and an outer flexible skin. The skin can be used for controlling the current of the electromagnet in the electromagnetic integrated guide shell in the submarine craft cabin, and adjusting the magnetic force between the electromagnet and the sliding block, so that the distance between the electromagnet and the sliding block is changed, the rope drives the adjustable tensioning integral structure to deform, the rigidity and damping characteristic of the skin are changed, the flow field around the surface of the skin is further influenced, and the turbulent flow coherent structure of the boundary layer is controlled, so that the submarine craft can obtain better drag reduction and noise reduction effects under different navigational speeds and diving depths. An intermediate layer formed by arranging a plurality of adjustable stretching integral structure units according to a certain rule is arranged between the inner flexible substrate and the outer flexible surface, and the adjustable stretching integral structure is fixedly connected with the inner flexible substrate and the outer flexible surface. The intelligent skin is laid on the surface of the submarine, the magnetic force between the electromagnet and the sliding block can be adjusted by controlling the current of the electromagnet according to the change of the navigational speed and the diving depth, and the distance between the electromagnet and the sliding block is changed, so that the deformation of the skin is regulated and controlled, the rigidity and damping characteristics of the skin are changed, the flow field around the surface of the skin is influenced, the turbulent flow coherent structure of the boundary layer is controlled, the fluid resistance and the noise are effectively reduced, better response is made to different flow field environments, and good resistance and noise reduction effects are ensured under various navigational speeds and diving depths.
Claims (6)
1. Intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on adjustable tensioning integral structure, and is characterized in that: the adjustable tensioning integral structure is formed by an adjustable tensioning integral structure unit array arranged between the side flexible substrate and the outer flexible skin, and the adjustable tensioning integral structure is fixedly connected with the inner flexible substrate and the outer flexible skin; micro through holes are uniformly distributed on the outer flexible surface skin.
2. The intelligent variable stiffness flexible drag reducing noise reducing skin based on the adjustable tension integral structure of claim 1, wherein: the adjustable stretching integral structure unit array is formed by arranging adjustable stretching integral structure units, each adjustable stretching integral structure unit comprises three layers of honeycomb structures, ropes, sliding blocks, electromagnetic integral guide shells and high-pressure waterproof sealing rings, each sliding block comprises an external resin material and an internal iron core, the honeycomb structures of all layers are fixedly connected, the ropes are fixedly connected with the honeycomb structures, the ropes are fixedly connected with the sliding blocks, the electromagnetic integral guide shells are in threaded connection with the submarine shells, and the electromagnetic integral guide shells are in threaded connection with the high-pressure waterproof sealing rings.
3. The intelligent variable stiffness flexible drag reducing noise reducing skin based on adjustable tension integral structure of claim 1 or 2, wherein: the inner flexible substrate and the outer flexible epidermis are made of organic polymer materials.
4. The intelligent variable stiffness flexible drag reducing noise reducing skin based on the adjustable tension integral structure of claim 2, wherein: the honeycomb structure of each layer has different dimensions and rigidities.
5. The intelligent variable stiffness flexible drag reducing noise reducing skin based on the adjustable tension integral structure of claim 3, wherein: the honeycomb structure of each layer has different dimensions and rigidities.
6. The intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on the adjustable tension-integral structure, as claimed in claim 4 or 5, wherein the honeycomb structure material is an organic polymer material with elastic damping characteristics; the rope material is a material with small deformation and high strength; the external material of the sliding block is a resin material with a smooth surface and no magnetic permeability.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310124752.8A CN116161163B (en) | 2023-02-16 | 2023-02-16 | Intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on adjustable tensioning integral structure |
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| CN202310124752.8A CN116161163B (en) | 2023-02-16 | 2023-02-16 | Intelligent variable-rigidity flexible drag-reduction noise-reduction skin based on adjustable tensioning integral structure |
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| CN116161163B CN116161163B (en) | 2024-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208182A (en) * | 2023-08-08 | 2023-12-12 | 中国船舶集团有限公司第七一九研究所 | Unmanned submarine rudder noise reduction equipment and application method thereof |
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