CN219865209U - Heat insulation device with composite structure - Google Patents
Heat insulation device with composite structure Download PDFInfo
- Publication number
- CN219865209U CN219865209U CN202320607093.9U CN202320607093U CN219865209U CN 219865209 U CN219865209 U CN 219865209U CN 202320607093 U CN202320607093 U CN 202320607093U CN 219865209 U CN219865209 U CN 219865209U
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- China
- Prior art keywords
- heat insulation
- metal foil
- layer
- glass fiber
- exhaust pipe
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- 238000009413 insulation Methods 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 32
- 239000011888 foil Substances 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 239000003365 glass fiber Substances 0.000 claims abstract description 21
- 239000011229 interlayer Substances 0.000 claims abstract description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 abstract description 18
- 229920000742 Cotton Polymers 0.000 abstract description 15
- 238000004049 embossing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Thermal Insulation (AREA)
Abstract
The utility model relates to the technical field of high-temperature pipeline heat insulation, in particular to a heat insulation device with a composite structure, which comprises a sleeve sleeved on the outer wall of an exhaust pipe, wherein the sleeve is of a multi-layer composite structure, a ceramic fiber felt layer, a pure air interlayer and a glass fiber cotton felt layer are sequentially arranged on the sleeve from inside to outside, and metal foils are arranged on the outer side and the inner side of the ceramic fiber felt layer, the pure air interlayer and the glass fiber cotton felt layer; according to the utility model, the ceramic fiber felt is adopted as the heat insulation material in the high-temperature side area of the exhaust pipe, the glass fiber cotton felt is adopted as the heat insulation material in the low-temperature side area, and the pure air interlayer is adopted as the heat insulation layer in the middle, so that the heat insulation performance is greatly improved.
Description
Technical Field
The utility model relates to the technical field of high-temperature pipeline heat insulation, in particular to a heat insulation device with a composite structure.
Background
With the increase of horsepower of engines of airplanes and automobiles, the temperature of engine exhaust pipelines is higher and higher, most of the engine exhaust pipelines exceed 860 ℃, and the pipelines of the type need to be insulated to be within 180 ℃ or lower in consideration of safety of equipment around an exhaust pipe and the like.
In order to solve the technical problems, a pipeline heat insulation device is introduced, and the conventional heat insulation device is provided with an air interlayer heat insulation layer and a heat insulation material heat insulation layer, and has the advantages that the heat conductivity coefficient of air is low, and heat conduction can be effectively insulated; the heat insulation material has the advantages that heat conduction can be effectively prevented, convection heat can be prevented to a certain extent, radiation heat can be effectively prevented if the heat insulation material is a reflective heat insulation material such as a metal plate, and the temperature cannot be reduced to be low based on the limitation of the existing material and the like if the heat insulation material or the coating is simply adopted.
Disclosure of Invention
In view of this, the present utility model provides a heat insulation device with a composite structure, which greatly improves the heat insulation performance.
In order to solve the technical problems, the utility model provides a heat insulation device with a composite structure, which comprises a sleeve sleeved on the outer wall of an exhaust pipe, wherein the sleeve is of a multi-layer composite structure, a ceramic fiber felt layer, a pure air interlayer and a glass fiber cotton felt layer are sequentially arranged on the sleeve from inside to outside, and metal foils are arranged on the outer side and the inner side of the ceramic fiber felt layer, the pure air interlayer and the glass fiber cotton felt layer.
Further, the metal foil is of an embossing structure, the metal foil positioned at the innermost side is attached to the outer wall of the exhaust pipe, and a plurality of air gaps are formed between the metal foil and the exhaust pipe.
Further, the metal foil is in a corrugated structure.
Further, the thickness of the ceramic fiber blanket layer is greater than the thickness of the glass fiber blanket layer.
Further, the metal foil is a stainless steel metal foil.
The technical scheme of the utility model has the following beneficial effects:
according to the utility model, the ceramic fiber felt is adopted as a heat insulation material in the high-temperature side area of the exhaust pipe, the glass fiber cotton felt is adopted as a heat insulation material in the low-temperature side area, the pure air interlayer is adopted as a heat insulation layer in the middle, so that the heat insulation performance is greatly improved, and the metal foil is arranged, the metal foil adopts an embossing structure, a plurality of air interlayers are formed between the metal foil and the exhaust pipe, so that the heat insulation effect is further improved, the ceramic fiber felt layer has good high-temperature heat insulation performance, the pure air interlayer effectively insulates heat conduction, the surface temperature of a product is greatly reduced, and the glass fiber cotton felt layer finally enables the surface of the product to obtain proper temperature.
Drawings
FIG. 1 is a schematic diagram of the front view of the present utility model;
fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
In the figure: 1. an exhaust pipe; 2. a sleeve; 201. a metal foil; 202. a ceramic fiber felt layer; 203. a pure air interlayer; 204. a glass fiber cotton felt layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1-2 of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.
The conventional heat insulation device has two heat insulation types, namely air interlayer heat insulation and heat insulation material heat insulation, and the air interlayer heat insulation has the advantages that the heat conductivity coefficient of air is low, and heat conduction can be effectively insulated; the heat insulation material has the advantages that the heat insulation material not only can effectively prevent heat conduction, but also can prevent convection heat to a certain extent, and meanwhile, the heat insulation material can effectively prevent radiant heat if being a reflective heat insulation material such as a metal plate.
The ceramic fiber felt can resist the temperature of more than 1000 ℃, the glass fiber cotton can resist the temperature of 500 ℃, the thermal conductivity of the ceramic fiber felt is similar and lower at high temperature, and the thermal conductivity of the ceramic fiber felt at low temperature is higher than that of the glass fiber cotton, so that the ceramic fiber felt is used as a heat insulation material in a high-temperature side area, the glass fiber cotton is used as a heat insulation material in a low-temperature side area, and an air interlayer is used as heat insulation in the middle.
As shown in fig. 1-2: the utility model provides a heat insulating device of composite construction, establishes the sleeve pipe 2 with blast pipe 1 outer wall including the cover, sleeve pipe 2 is multilayer composite construction, sleeve pipe 2 is equipped with ceramic fiber felt layer 202, pure air intermediate layer 203 and glass fiber cotton felt layer 204 from interior to exterior in proper order, and ceramic fiber felt layer 202, pure air intermediate layer 203, glass fiber cotton felt layer 204's outside and inboard all are equipped with metal foil 201, and ceramic fiber felt layer 202's thickness is greater than glass fiber cotton felt layer 204's thickness.
Specifically, a metal foil 201 is arranged on one side, close to the outer wall of the exhaust pipe 1, of the heat insulation device with the composite structure, the metal foil 201 can be made of stainless steel metal foil 201, the metal foil 201 adopts an embossing structure, particularly a corrugated structure, the metal foil 201 is attached to the outer wall of the exhaust pipe 1 to form a plurality of air interlayers, air with the lowest heat conductivity is used as a first layer of heat insulation, a second layer of heat insulation is made of ceramic fiber felt with excellent high-temperature heat insulation performance, the ceramic fiber felt has low heat conductivity and good high-temperature heat insulation performance, meanwhile, the metal foil 201 is used as a supporting material outside, the third layer of heat insulation is made of pure air interlayer 203, the pure air interlayer 203 can effectively insulate heat conduction, the surface temperature of a product is greatly reduced, and the metal foil 201 is used as the supporting material outside again;
and the fourth layer of heat insulation adopts glass fiber cotton felt with excellent heat insulation performance, and finally, the surface of the product obtains proper temperature.
The working principle of the utility model is as follows:
by adopting the ceramic fiber blanket as the heat insulation material in the high temperature side area of the exhaust pipe 1, adopting the glass fiber blanket as the heat insulation material in the low temperature side area, adopting the pure air interlayer 203 as the heat insulation layer in the middle, greatly improving the heat insulation performance, and by arranging the metal foil 201, the metal foil 201 adopts the embossing structure, a plurality of air interlayers are also formed between the metal foil 201 and the exhaust pipe 1, further improving the heat insulation effect, the ceramic fiber blanket 202 has good high temperature heat insulation performance, the pure air interlayer 203 effectively insulates heat conduction, greatly reduces the surface temperature of the product, and finally, the glass fiber blanket 204 enables the surface of the product to obtain proper temperature.
In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (5)
1. A composite structural insulation device, characterized in that: the novel exhaust pipe is characterized by comprising a sleeve (2) sleeved on the outer wall of the exhaust pipe (1), wherein the sleeve (2) is of a multi-layer composite structure, a ceramic fiber felt layer (202), a pure air interlayer (203) and a glass fiber felt layer (204) are sequentially arranged from inside to outside of the sleeve (2), and metal foils (201) are arranged on the outer side and the inner side of the ceramic fiber felt layer (202), the pure air interlayer (203) and the glass fiber felt layer (204).
2. A composite structural insulation apparatus according to claim 1, wherein: the metal foil (201) is of an embossed structure, the metal foil (201) positioned at the innermost side is attached to the outer wall of the exhaust pipe (1), and a plurality of air gaps are formed between the metal foil (201) and the exhaust pipe (1).
3. A composite structural insulation apparatus according to claim 2, wherein: the metal foil (201) is in a corrugated structure.
4. A composite structural insulation apparatus according to claim 1, wherein: the ceramic fiber blanket (202) has a thickness greater than the glass fiber blanket (204).
5. A composite structural insulation apparatus according to claim 1, wherein: the metal foil (201) is a stainless steel metal foil (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320607093.9U CN219865209U (en) | 2023-03-24 | 2023-03-24 | Heat insulation device with composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320607093.9U CN219865209U (en) | 2023-03-24 | 2023-03-24 | Heat insulation device with composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865209U true CN219865209U (en) | 2023-10-20 |
Family
ID=88321403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320607093.9U Active CN219865209U (en) | 2023-03-24 | 2023-03-24 | Heat insulation device with composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219865209U (en) |
-
2023
- 2023-03-24 CN CN202320607093.9U patent/CN219865209U/en active Active
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