CN116446992A - Small-size underwater thermodynamic navigation body exhaust noise reduction device - Google Patents
Small-size underwater thermodynamic navigation body exhaust noise reduction device Download PDFInfo
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- CN116446992A CN116446992A CN202310346046.8A CN202310346046A CN116446992A CN 116446992 A CN116446992 A CN 116446992A CN 202310346046 A CN202310346046 A CN 202310346046A CN 116446992 A CN116446992 A CN 116446992A
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- exhaust
- underwater
- shell
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- 230000009467 reduction Effects 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 44
- 239000010410 layer Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000149 argon plasma sintering Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 239000002346 layers by function Substances 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/004—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 specially adapted for marine propulsion, i.e. for receiving simultaneously engine exhaust gases and engine cooling water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to the field of underwater exhaust noise reduction, and provides an exhaust noise reduction device for a small underwater thermal power navigation body, which comprises a ceramic micropore exhaust upper half column shell and a ceramic micropore exhaust lower half column shell, wherein the ceramic micropore exhaust upper half column shell is arranged on the upper side of a waterproof pressure-bearing main shell of the underwater navigation body, a space surrounded by the ceramic micropore exhaust upper half column shell and the waterproof pressure-bearing main shell of the underwater navigation body is an upper half exhaust cavity, the ceramic micropore exhaust upper half column shell is arranged on the lower side of the waterproof pressure-bearing main shell of the underwater navigation body, a space surrounded by the ceramic micropore exhaust lower half column shell and the waterproof pressure-bearing main shell of the underwater navigation body is a lower half exhaust cavity, and exhaust of the thermal power device is respectively sent into the upper half exhaust cavity and the lower half exhaust cavity through pipelines. The device can greatly reduce the underwater radiation noise generated by the exhaust of the thermal power device, reduce the influence of the underwater exhaust noise of the thermal power device on an acoustic detection system of the underwater vehicle, reduce bubble trails and widen the use occasions of the underwater vehicle.
Description
Technical Field
The invention relates to the field of underwater exhaust noise reduction, in particular to an exhaust noise reduction device for a small underwater thermodynamic navigation body.
Background
Underwater vehicles are typically powered by batteries or thermal power units. The thermodynamic device has the characteristics of high power density and high fuel heat value, and has more advantages than battery power in voyage and voyage speed under the condition of occupying the same space or weight of an underwater navigation, so that the thermodynamic device is widely used. The underwater thermal power device comprises a wobble plate machine adopting single-component fuel combustion, a Stirling engine adopting double-component combustion, a steam turbine and the like, combustion waste gas is required to be discharged underwater by the thermal power device utilizing combustion work, because the flow of the combustion waste gas is large, the structure of an exhaust pipe is simpler, and gas-liquid jet generated by large-flow exhaust through a large-diameter pipeline is extremely easy to generate strong underwater exhaust noise, the acoustic detection system of an underwater navigation body is greatly influenced, the acoustic detection system is usually required to be supported by a mother ship detection system and is difficult to work independently, and meanwhile, the strong underwater exhaust noise also easily exposes the position of the underwater navigation body or the mother ship, so that the underwater navigation body of the thermal power device can not be used under the high-strength countermeasure environment. In addition, bubble tracking caused by underwater exhaust can be detected by optical detection methods, and is also an important factor in exposing the position of an underwater vehicle.
Disclosure of Invention
In order to solve the problems of high exhaust noise and obvious exhaust trail of a small-sized underwater vehicle with a thermal power device, provide conditions for autonomous navigation of the small-sized underwater vehicle with the thermal power device, and widen the application scene of the small-sized underwater vehicle with the thermal power device.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The invention provides an exhaust noise reduction device of a small underwater thermodynamic navigation body, which comprises a ceramic micropore exhaust upper half column shell, a ceramic micropore exhaust lower half column shell, an upper exhaust connecting pipe, a sealing gasket, a first exhaust check valve, a second exhaust check valve, an exhaust three-way pipe, a third exhaust check valve and a lower exhaust connecting pipe, wherein the ceramic micropore exhaust upper half column shell is arranged on the upper side of a waterproof pressure-bearing main shell of the underwater navigation body through a plurality of groups of fastening bolts and spring gaskets, the sealing gasket is used for sealing, a space surrounded by the ceramic micropore exhaust upper half column shell and the waterproof pressure-bearing main shell of the underwater navigation body is an upper half exhaust cavity, the ceramic micropore exhaust upper half column shell is arranged on the lower side of the waterproof pressure-bearing main shell of the underwater navigation body through a plurality of groups of fastening bolts and spring gaskets, the ceramic micropore exhaust lower half column shell and the waterproof pressure-bearing main shell are sealed through the sealing gasket, the second exhaust check valve is connected to an exhaust pipeline outlet of the thermodynamic device, an inlet of the exhaust three-way is connected with an outlet of the second exhaust check valve, the ceramic micropore exhaust upper half column shell is connected with an upper half exhaust air cavity, the upper half column shell is connected with the waterproof pressure-bearing main shell of the underwater navigation body, the ceramic micropore exhaust upper half column shell is connected with the upper half air inlet of the waterproof pressure-bearing main shell, the waterproof pressure-bearing main shell is connected with the upper half air inlet of the waterproof pressure-bearing main air pipe, and the waterproof pressure-bearing main air pipe is connected with the upper air inlet of the waterproof pressure-bearing three air pipe, and the upper half air inlet is connected with the upper air inlet of the other part of the waterproof pressure-bearing three air valve, and the upper air valve.
In the above technical scheme, the ceramic microporous exhaust upper half column shell and the ceramic microporous exhaust lower half column shell are formed by sintering laser powder, and adopt particles with layered granularity and the same adhesive, specifically, firstly adopt particles with larger particle size and the adhesive to form a bottom framework structure by laser sintering, then adopt particles with smaller particle size and the adhesive to form an intermediate filter layer by laser sintering, and attach to the bottom framework structure, and finally adopt fine particles and the adhesive to form a surface functional layer by laser sintering, and attach to the intermediate filter layer.
In the technical scheme, the ceramic microporous exhaust upper half column shell and the ceramic microporous exhaust lower half column shell adopt a common design scheme and can be smoothly connected with the surface of an underwater vehicle.
In the technical scheme, the second exhaust check valve is sealed by metal hard, and all parts of the second exhaust check valve are made of high-temperature-resistant metal and can resist the high temperature of exhaust.
According to the exhaust noise reduction device of the underwater vehicle of the small-sized thermodynamic device, the flow speed of the exhaust outlet is reduced by greatly increasing the area of the exhaust outlet, air jet flow is converted into bubbling flow, and the size of bubbles is further reduced through the movement of the ceramic microporous column shell and the self-body of the underwater vehicle; through the comprehensive effect of the factors, the underwater radiation noise generated by the exhaust of the thermodynamic device is greatly reduced, the influence of the underwater exhaust noise of the thermodynamic device on an acoustic detection system of the underwater vehicle is reduced, the absorption of bubbles is accelerated in a mode of reducing the size of the bubbles, the floating time of the bubbles is prolonged, the wake of the bubbles is reduced, the using occasion of the underwater vehicle is widened, and the use of the small underwater vehicle is more flexible without worrying about position exposure.
Drawings
Fig. 1 is a schematic structural view of a small underwater thermodynamic craft.
Fig. 2 is a schematic structural view of the exhaust noise reduction device for the small underwater thermodynamic navigation body.
FIG. 3 is a schematic view of section A-A of FIG. 2.
FIG. 4 is a schematic view of section B-B of FIG. 2.
FIG. 5 is a schematic diagram of the ceramic microporous exhaust column shell structure in the invention.
In the figure: 1. the hydraulic engine comprises a ceramic microporous exhaust upper half column shell, a ceramic microporous exhaust lower half column shell, an upper exhaust connecting pipe, a sealing gasket, a fastening bolt, a spring gasket, a waterproof bearing main shell, a first exhaust check valve, a second exhaust check valve, a 10 exhaust three-way pipe, a 11 third exhaust check valve, a 12 lower exhaust connecting pipe, a 13 propeller, a 14 rudder, a 15 thermodynamic device, a 16 bottom framework structure, a 17 intermediate filter layer and a 18 surface functional layer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly in view of those skilled in the art and may, for example, be fixedly connected, detachably connected, or be integrated; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
As shown in fig. 1 to 4, the present embodiment provides a small underwater thermodynamic navigation body exhaust noise reduction device. The device mainly comprises a ceramic micropore exhaust upper half column shell 1, a ceramic micropore exhaust lower half column shell 2, an upper exhaust connecting pipe 3, a sealing gasket 4, a fastening bolt 5, a spring gasket 6, a waterproof pressure-bearing main shell 7, a first exhaust check valve 8, a second exhaust check valve 9, an exhaust three-way pipe 10, a third exhaust check valve 11, a lower exhaust connecting pipe 12 and the like. The ceramic micropore exhaust upper half column shell 1 is arranged on the upper half part of the waterproof pressure-bearing main shell 7 of the underwater vehicle through a plurality of groups of fastening bolts 5 and spring gaskets 6, and is sealed through the sealing gaskets 4, and a space surrounded by the ceramic micropore exhaust upper half column shell 1 and the waterproof pressure-bearing main shell 7 of the underwater vehicle is an upper half exhaust cavity. The ceramic micropore exhaust upper half column shell 2 is arranged at the lower half part of the waterproof pressure-bearing main shell 7 of the underwater vehicle through a plurality of groups of fastening bolts 5 and spring gaskets 6, and is sealed through the sealing gaskets 4, and a space surrounded by the ceramic micropore exhaust lower half column shell 2 and the waterproof pressure-bearing main shell 7 of the underwater vehicle is a lower half exhaust cavity. The second exhaust check valve 9 is connected to the exhaust pipeline outlet of the thermodynamic device by welding, so that the thermodynamic device is prevented from being backwashed by seawater, the valve is sealed by metal, and all parts are made of high-temperature-resistant metal and can resist the high temperature of exhaust. The inlet of the exhaust three-way pipe 10 is connected with the outlet of the second exhaust check valve 9 through welding, and the exhaust is divided into an upper part and a lower part. The inlet of the first exhaust check valve 8 is connected to the upper outlet of the exhaust tee 10 by welding, and the outlet of the first exhaust check valve 8 is connected to the upper exhaust nipple 3 by welding. The upper exhaust connecting pipe 3 is connected with the top opening of the waterproof pressure-bearing main shell 7 through welding, and part of exhaust is sent into the upper half exhaust cavity. The inlet of the third exhaust check valve 11 is connected to the lower outlet of the exhaust tee 10 by welding, and the outlet of the third exhaust check valve 11 is connected to the lower exhaust nipple 12 by welding. The lower exhaust connecting pipe 12 is connected with the bottom opening of the waterproof pressure-bearing main shell 7 through welding, and the other part of exhaust is sent into the lower half exhaust cavity.
As shown in fig. 5, the ceramic microporous exhaust upper half column shell 1 and the ceramic microporous exhaust lower half column shell 2 are prepared by a laser powder sintering technology, and adopt particles with layered granularity and the same binder. Specifically: firstly, adopting particles with the particle size of 0.5 mm-1.5 mm and an adhesive to form a bottom framework structure 16 through laser sintering, then adopting particles with the particle size of 0.2 mm-0.8 mm and the adhesive to form an intermediate filter layer 17 through laser sintering and attaching the intermediate filter layer to the bottom framework structure, and finally adopting fine particles with the particle size of 0.1 mm-0.3 mm and the adhesive to form a surface functional layer 18 through laser sintering and attaching the intermediate filter layer to the intermediate filter layer. The composite sintered structure has the characteristics of high strength of the bottom layer structure, soot blocking resistance of the middle filter layer, small characteristic size of the surface function layer air holes and small size of formed bubbles. The ceramic microporous exhaust upper half column shell 1 and the ceramic microporous exhaust lower half column shell 2 also adopt a common design scheme and can be smoothly connected with the surface of an underwater vehicle.
What is not described in detail in this specification is prior art known to those skilled in the art.
The embodiments of the present invention are not limited to the above-described embodiments, and certain combinations of features according to the claims may be provided, and the above-described embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and it is obvious to those skilled in the art that any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a device of making an uproar falls in small-size underwater thermodynamic navigation body exhaust which characterized in that: the ceramic microporous exhaust gas check valve comprises a ceramic microporous exhaust gas upper half column shell, an upper exhaust connecting pipe, a sealing gasket, a first exhaust check valve, a second exhaust check valve, an exhaust three-way pipe, a third exhaust check valve and a lower exhaust connecting pipe, wherein the ceramic microporous exhaust gas upper half column shell is arranged on the upper side of a waterproof pressure-bearing main shell of an underwater navigation body and is sealed through the sealing gasket, a space surrounded by the ceramic microporous exhaust gas upper half column shell and the waterproof pressure-bearing main shell of the underwater navigation body is an upper half exhaust cavity, the ceramic microporous exhaust gas upper half column shell is arranged on the lower side of the waterproof pressure-bearing main shell of the underwater navigation body and is sealed through the sealing gasket, the space surrounded by the ceramic microporous exhaust gas lower half column shell and the waterproof pressure-bearing main shell of the underwater navigation body is a lower half exhaust cavity, the second exhaust check valve is connected to an exhaust pipeline outlet of a thermal power device, an inlet of the exhaust three-way pipe is connected with an outlet of the second exhaust check valve, the exhaust gas is divided into an upper part and a lower part, an inlet of the first exhaust check valve is connected with an upper outlet of the upper exhaust three-way pipe, an outlet of the waterproof pressure-bearing main shell of the underwater navigation body is connected with the waterproof pressure-bearing main shell of the underwater navigation body, the upper half exhaust pipe is connected with the waterproof pressure-bearing shell of the waterproof pressure-bearing main shell of the underwater navigation body, the lower air inlet is connected with the upper half air cavity, and the other part of the exhaust three-bearing pipe is connected with the upper air outlet of the waterproof pressure-bearing shell of the exhaust pipe, and the other upper part is connected with the upper air outlet of the waterproof pressure-bearing shell.
2. The small underwater thermodynamic vehicle exhaust noise reduction device of claim 1, wherein: the ceramic microporous exhaust upper half column shell and the ceramic microporous exhaust lower half column shell are formed by sintering laser powder, particles with layered granularity and the same adhesive are adopted, specifically, firstly, particles with the granularity of 0.5-1.5 mm and the adhesive are adopted to form a bottom framework structure by laser sintering, then the particles with the granularity of 0.2-0.8 mm and the adhesive are adopted to form an intermediate filter layer by laser sintering, the intermediate filter layer is attached to the bottom framework structure, and finally fine particles with the granularity of 0.1-0.3 mm and the adhesive are adopted to form a surface functional layer by laser sintering, and the intermediate filter layer is attached to the intermediate filter layer.
3. The small underwater thermodynamic vehicle exhaust noise reduction device of claim 1, wherein: the ceramic microporous exhaust upper half column shell and the ceramic microporous exhaust lower half column shell adopt a common design and are smoothly connected with the surface of the underwater vehicle.
4. The small underwater thermodynamic vehicle exhaust noise reduction device of claim 1, wherein: the ceramic microporous exhaust upper half column shell is arranged on the upper side of the waterproof pressure-bearing main shell of the underwater vehicle through a plurality of groups of fastening bolts and spring gaskets.
5. The small underwater thermodynamic vehicle exhaust noise reduction device of claim 1, wherein: the ceramic microporous exhaust upper half column shell is arranged on the lower side of the waterproof pressure-bearing main shell of the underwater vehicle through a plurality of groups of fastening bolts and spring gaskets.
6. The small underwater thermodynamic vehicle exhaust noise reduction device of claim 1, wherein: the second exhaust check valve adopts metal hard seal, and each part of the second exhaust check valve is made of high temperature resistant metal and can resist the high temperature of exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346046.8A CN116446992A (en) | 2023-04-03 | 2023-04-03 | Small-size underwater thermodynamic navigation body exhaust noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346046.8A CN116446992A (en) | 2023-04-03 | 2023-04-03 | Small-size underwater thermodynamic navigation body exhaust noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116446992A true CN116446992A (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310346046.8A Pending CN116446992A (en) | 2023-04-03 | 2023-04-03 | Small-size underwater thermodynamic navigation body exhaust noise reduction device |
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| Country | Link |
|---|---|
| CN (1) | CN116446992A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253603A (en) * | 1992-07-10 | 1993-10-19 | Hughes Aircraft Company | Underwater vehicle muffler |
| CN103894075A (en) * | 2014-03-07 | 2014-07-02 | 中南大学 | Heterogeneous composite ceramic with gradient holes and preparation method for ceramic |
| CN105254309A (en) * | 2015-09-24 | 2016-01-20 | 佛山华智新材料有限公司 | Ceramic 3D printing method |
| CN109131720A (en) * | 2018-09-01 | 2019-01-04 | 哈尔滨工程大学 | A kind of water medium-high speed sports body Friction Reduction by Micro-bubbles structure |
| CN110410176A (en) * | 2019-06-21 | 2019-11-05 | 浙江大学 | A kind of underwater exhaust denoising device based on low speed bubble stream |
-
2023
- 2023-04-03 CN CN202310346046.8A patent/CN116446992A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5253603A (en) * | 1992-07-10 | 1993-10-19 | Hughes Aircraft Company | Underwater vehicle muffler |
| CN103894075A (en) * | 2014-03-07 | 2014-07-02 | 中南大学 | Heterogeneous composite ceramic with gradient holes and preparation method for ceramic |
| CN105254309A (en) * | 2015-09-24 | 2016-01-20 | 佛山华智新材料有限公司 | Ceramic 3D printing method |
| CN109131720A (en) * | 2018-09-01 | 2019-01-04 | 哈尔滨工程大学 | A kind of water medium-high speed sports body Friction Reduction by Micro-bubbles structure |
| CN110410176A (en) * | 2019-06-21 | 2019-11-05 | 浙江大学 | A kind of underwater exhaust denoising device based on low speed bubble stream |
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