CN212407824U - Aerogel heat insulation blanket composite heat insulation process structure for high-temperature pipeline - Google Patents
Aerogel heat insulation blanket composite heat insulation process structure for high-temperature pipeline Download PDFInfo
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- CN212407824U CN212407824U CN201922357695.XU CN201922357695U CN212407824U CN 212407824 U CN212407824 U CN 212407824U CN 201922357695 U CN201922357695 U CN 201922357695U CN 212407824 U CN212407824 U CN 212407824U
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Abstract
The utility model relates to an aerogel heat insulation blanket composite heat insulation process structure aiming at a high-temperature pipeline, which belongs to the field of high-temperature pipeline heat insulation, and an inner-layer high-temperature resistant aerogel heat insulation blanket, a middle-layer medium-temperature resistant aerogel heat insulation blanket and an outer-layer high-temperature resistant aerogel heat insulation blanket are sequentially wrapped outside the high-temperature thermal pipeline from inside to outside; the inner-layer high-temperature resistant aerogel heat insulation blanket is prepared by adopting an aerogel heat insulation material which has good performance and high price and can resist the high temperature of more than 400 ℃; the middle-layer medium-temperature resistant aerogel heat insulation blanket is prepared by selecting a high-temperature resistant aerogel heat insulation material with moderate performance and low price; the outer layer is made of high-temperature resistant aerogel insulation blanket with good thermal insulation performance and good waterproof performance; the utility model discloses an adiabatic blanket composite heat preservation process structure of aerogel to high temperature pipeline, its thermal insulation performance is superior, heat preservation thickness is little, waterproof performance is good, easily tailor, long service life.
Description
Technical Field
The utility model relates to an adiabatic blanket composite heat preservation technology structure of aerogel to high temperature pipeline belongs to high temperature pipeline heat preservation field.
Background
In the industrial production processes of petroleum, chemical industry, metallurgy, electric power and the like, high-temperature medium pipeline transportation, such as high-temperature high-pressure steam, exists. In the process of heat transfer, the heat preservation effect is poor, so that the heat loss along the way is serious, the great energy waste is caused, and the more serious result is that the heat loss along the way is too large, so that the temperature and the pressure of the tail end steam point cannot meet the requirements of the production process, and the product quality is influenced. At present, the traditional insulation material commonly used is like materials such as rock wool, glass cotton, aluminium silicate cotton, and waterproof performance is poor, and parcel thickness is big, can reach the heat preservation requirement in the short time after the new parcel, nevertheless uses a period of time after, because the rainwater gets into, the phenomenon of subsiding that can appear collapsing, very big gap appears between insulation material and pipeline surface, makes its thermal insulation performance descend by a wide margin, and pipeline surface temperature rises by a wide margin, and surface heat loss increases to cause the energy waste, increase the energy cost of mill.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adiabatic blanket composite heat preservation process structure of aerogel to high temperature pipeline for solve that high temperature pipeline tradition insulation material heat preservation thickness is big, waterproof performance is poor, insulation material inefficacy and subside problem of collapsing of a specified duration of time of intaking.
The utility model aims at realizing through the following technical scheme:
the utility model provides a thermal-insulated blanket composite insulation structure of aerogel to high temperature pipeline, the center is high temperature heating power pipeline, wraps up the thermal-insulated blanket of inlayer high temperature resistant aerogel, the thermal-insulated blanket of middle level medium temperature resistant aerogel and the thermal-insulated blanket of outer high temperature resistant aerogel from inside to outside in proper order outside high temperature heating power pipeline. Because the inner layer high temperature resistant aerogel heat insulation blanket contacts the high temperature heat pipeline with the highest temperature, the inner layer high temperature resistant aerogel heat insulation blanket is prepared by using the aerogel heat insulation material with good performance and high price and high temperature resistance of more than 400 ℃. Because the middle-layer medium-temperature resistant aerogel heat insulation blanket is not in contact with the high-temperature heat distribution pipeline with the highest temperature and is not in contact with the outer environment, the middle-layer medium-temperature resistant aerogel heat insulation blanket is prepared from the high-temperature resistant aerogel heat insulation material with medium performance and low price. Because the outer high-temperature resistant aerogel heat-insulating blanket is contacted with the outer environment, the high-temperature resistant aerogel heat-insulating material with good heat insulating performance and good waterproof performance is selected. The inner layer high temperature resistant aerogel heat insulation blanket, the middle layer medium temperature resistant aerogel heat insulation blanket and the outer layer high temperature resistant aerogel heat insulation blanket are all prepared into blanket-shaped products by aerogel heat insulation materials. The aerogel thermal insulation blanket material is formed by compounding a reinforcing fiber material, wherein the reinforcing fiber material comprises silica aerogel, glass fiber and ceramic fiber. The aerogel heat-insulating material has the advantages of excellent heat-insulating property, strong waterproofness, extremely low heat conductivity coefficient, high tensile and compressive strength, small shearing resistance, easy cutting and convenient construction and application. The heat insulation effect of the aerogel heat insulation material is 2-5 times that of the traditional heat insulation material, the equivalent heat insulation effect is achieved, and the thickness of the wrapped aerogel heat insulation blanket is only a fraction of that of the traditional material. The heat loss is small after heat preservation, and the space utilization rate is high.
Preferably, the number of the inner-layer high-temperature-resistant aerogel heat-insulating blanket layers is determined according to the heat conductivity coefficient of the selected inner-layer high-temperature-resistant aerogel heat-insulating blanket and the high-temperature resistance of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket, so that the high-temperature resistance of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket can meet the use requirement. The inner-layer high-temperature resistant aerogel heat insulation blanket is made of an aerogel heat insulation material which has good performance and high price and can resist the high temperature of more than 400 ℃; the heat conductivity coefficient of the high-temperature resistant aerogel heat insulation blanket is 0.062W/mK at the high temperature of 600 ℃. The hydrophobic rate of the material is more than 99.9% at the temperature of below 100 ℃, and special waterproof measures are not needed. The structural strength can still be maintained at a high temperature of 200-650 ℃ and in a vibration environment, the sedimentation is not easy to occur, and the service life can be as long as 20 years. The inner-layer high-temperature resistant aerogel heat-insulating blanket material has more obvious heat-insulating performance advantage in a high-temperature area above 400 ℃. Preferably, the inner-layer high-temperature-resistant aerogel heat-insulating blanket is 10mm in specification and is wrapped by 2 layers.
Preferably, the number of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket layers is determined according to the heat preservation requirement. The high temperature resistance of the middle-layer medium-temperature resistant aerogel heat insulation blanket is applicable to the temperature below 400 ℃, the middle-layer medium-temperature resistant aerogel heat insulation blanket has certain difference with the inner-layer high-temperature resistant aerogel heat insulation blanket in the aspects of heat conductivity coefficient, waterproof performance and the like, the performances of the middle-layer medium-temperature resistant aerogel heat insulation blanket are not superior to those of the inner-layer high-temperature resistant aerogel heat insulation blanket in all aspects, but the middle-layer medium-temperature resistant aerogel heat insulation; more preferably, the middle-layer medium-temperature resistant aerogel heat insulation blanket is 10mm in specification and is wrapped by 2 layers.
Preferably, the number of the outer-layer high-temperature-resistant aerogel heat-insulating blanket is a single layer, and the outer-layer high-temperature-resistant aerogel heat-insulating blanket is made of an aerogel heat-insulating material with good heat insulating performance and good water resistance. Preferably, the inner-layer high-temperature-resistant aerogel heat-insulating blanket is 5mm in specification and is wrapped by 1 layer.
Has the advantages that:
the aerogel heat-insulating blanket composite heat-insulating process structure for the high-temperature pipeline can effectively solve the problems that the traditional heat-insulating material absorbs water and settles, and the heat-insulating effect is weakened after long-term use. Meanwhile, the aerogel thermal insulation blanket composite thermal insulation process structure can greatly reduce the thickness of a thermal insulation layer, the service life is as long as 20 years, the thermal insulation performance attenuation is extremely low, the aerogel thermal insulation blanket is easy to cut, the compressive strength is high, and the construction is convenient.
Drawings
Fig. 1 is a schematic sectional view of the aerogel thermal insulation blanket composite thermal insulation process structure for high temperature pipeline of the present invention;
wherein: 1-high temperature heating pipeline, 2-inner layer high temperature resistant aerogel heat insulation blanket, 3-middle layer medium temperature resistant aerogel heat insulation blanket, and 4-outer layer high temperature resistant aerogel heat insulation blanket.
Detailed Description
The invention will be further described with reference to the accompanying drawings
As shown in fig. 1:
for example, for a high-temperature pipeline with the surface temperature of 480 ℃, the first layer is wrapped with a high-temperature resistant aerogel heat insulation blanket (suitable for the temperature of more than 400 ℃), the specification of the aerogel heat insulation blanket is 10mm, when the blanket is wrapped, the longitudinal seam cannot be arranged within 45 ℃ of the vertical central line of the pipeline, and when the blanket is wrapped on the same layer, staggered seam wrapping is adopted. After one layer of wrapping is finished, the surface temperature can be reduced to be below 100 ℃.
The second layer is continuously wrapped with the high-temperature resistant aerogel heat insulation blanket, the material specification is 10mm, the upper layer and the lower layer are wrapped by adopting press seams when being wrapped, staggered seams are adopted when being wrapped on the same layer, the longitudinal seams cannot be arranged within 45 ℃ of the vertical center line of the pipeline, and the temperature can be reduced to about 60 ℃ after the second layer is wrapped.
The third layer and the fourth layer are made of medium temperature resistant aerogel heat insulation blanket (wrapped at the temperature of below 400 ℃, the material specification is 10mm, the blanket is wrapped by adopting a pressing seam, and after the wrapping of the four layers is finished, the temperature of the outer surface can be reduced to about 35 ℃.
At the moment, the heat preservation effect reaches the relevant standard requirement, and the problem that the heat preservation performance is reduced due to the fact that the heat preservation material is settled because of water absorption is solved.
The outermost layer is wrapped by the high-temperature resistant aerogel heat-insulating blanket (more than 400 ℃), the hydrophobicity of the high-temperature resistant aerogel heat-insulating blanket is more than 99.9% at the temperature of below 100 ℃, rainwater can be effectively prevented from entering the interior of the heat-insulating material, and the heat-insulating effect is achieved to the maximum extent. After the outermost layer is wrapped by the high-temperature resistant aerogel heat insulation blanket, a waterproof layer does not need to be specially wrapped.
The outermost layer is wrapped by a high-temperature resistant aerogel heat insulation blanket, the material specification is 5mm, and the heat insulation blanket is wrapped by adopting a pressing seam.
After the aerogel heat insulation blanket compound incubation, the 45mm thickness of parcel can reach the excellent heat preservation effect, has effectively solved the insulation material problem of absorbing water simultaneously, effectively guarantees that the heat preservation effect is not decayed for a long time.
Take the high-temperature steam pipeline heat preservation of a certain chemical industry enterprise as an example:
according to the requirements of an attached table B of industrial equipment and pipeline heat insulation engineering design specifications (GB50264-2013), when the temperature of the pipeline is 480 ℃, the maximum allowable heat loss of the outer surface of the heat insulation layer is 220W/m2。
Compared with aluminum silicate cotton heat preservation, the aerogel heat insulation blanket composite heat preservation structure is adopted, the thickness of the heat preservation layer can be reduced by two thirds, the temperature of the outer surface can be reduced by 18 ℃, and the heat loss per unit area can be reduced by 237W/m2The heat preservation effect is obviously improved.
The above detailed description further illustrates the objects, technical solutions and advantages of the present invention, and it should be understood that the above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a thermal-insulated blanket composite heat preservation technology structure of aerogel to high temperature pipeline which characterized in that: the method comprises the following steps: a high-temperature heat pipeline (1), an inner-layer high-temperature resistant aerogel heat insulation blanket (2), a middle-layer medium-temperature resistant aerogel heat insulation blanket (3) and an outer-layer high-temperature resistant aerogel heat insulation blanket (4); the structure center is a high-temperature heat distribution pipeline (1), and an inner-layer high-temperature resistant aerogel heat insulation blanket (2), a middle-layer medium-temperature resistant aerogel heat insulation blanket (3) and an outer-layer high-temperature resistant aerogel heat insulation blanket (4) are sequentially wrapped on the outer side of the high-temperature heat distribution pipeline (1) from inside to outside; because the inner-layer high-temperature resistant aerogel heat insulation blanket (2) is in contact with the high-temperature heat pipeline (1) with the highest temperature, the inner-layer high-temperature resistant aerogel heat insulation blanket (2) is prepared by using an aerogel heat insulation material with good performance and high price and high temperature resistance of more than 400 ℃; the middle-layer medium-temperature resistant aerogel heat insulation blanket (3) is not in contact with the high-temperature heat distribution pipeline (1) with the highest temperature and is not in contact with the outer environment, and the middle-layer medium-temperature resistant aerogel heat insulation blanket (3) is prepared from a high-temperature resistant aerogel heat insulation material with moderate performance and low price; the outer-layer high-temperature resistant aerogel heat insulation blanket (4) is in contact with the outer-layer environment and is prepared by selecting a high-temperature resistant aerogel heat insulation material with good heat insulation performance and good waterproof performance; the inner layer high temperature resistant aerogel heat insulation blanket (2), the middle layer medium temperature resistant aerogel heat insulation blanket (3) and the outer layer high temperature resistant aerogel heat insulation blanket (4) are all prepared into blanket-shaped products by aerogel heat insulation materials.
2. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 1, wherein: the number of the layers of the inner-layer high-temperature-resistant aerogel heat-insulating blanket (2) is determined according to the heat conductivity coefficient of the selected inner-layer high-temperature-resistant aerogel heat-insulating blanket (2) and the high-temperature resistance of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket (3), so that the high-temperature resistance of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket (3) meets the use requirement; the inner-layer high-temperature resistant aerogel heat insulation blanket (2) is made of an aerogel heat insulation material which has good performance and high price and can resist the high temperature of more than 400 ℃; the heat conductivity coefficient of the high-temperature resistant aerogel heat insulation blanket is 0.062W/mK at the high temperature of 600 ℃, the hydrophobicity of the material can reach more than 99.9% at the temperature of below 100 ℃, special waterproof measures are not needed, the structural strength can still be maintained and the material is not easy to settle at the high temperature of 200-650 ℃ and in a vibration environment, and the service life can be as long as 20 years; the inner-layer high-temperature-resistant aerogel heat-insulating blanket (2) material has more obvious heat-insulating performance advantage in a high-temperature area above 400 ℃.
3. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 2, wherein: the inner-layer high-temperature resistant aerogel heat insulation blanket (2) is selected to be 10mm in specification and wrapped by 2 layers.
4. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 1, wherein: the number of layers of the middle-layer medium-temperature-resistant aerogel heat-insulating blanket (3) is determined according to the heat preservation requirement; the middle-layer medium-temperature resistant aerogel heat insulation blanket (3) has the high temperature resistance of below 400 ℃, the price of the middle-layer medium-temperature resistant aerogel heat insulation blanket (3) is lower than that of the layer high-temperature resistant aerogel heat insulation blanket, and the cost performance is higher.
5. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 4, wherein: the middle-layer medium-temperature resistant aerogel heat insulation blanket (3) is 10mm in specification and is wrapped by 2 layers.
6. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 1, wherein: the number of the layers of the outer-layer high-temperature resistant aerogel heat insulation blanket (4) is a single layer, and the outer-layer high-temperature resistant aerogel heat insulation blanket (4) is made of aerogel heat insulation materials with good heat insulation performance and good waterproofness.
7. The aerogel thermal insulation blanket composite insulation process structure for high temperature pipelines as claimed in claim 6, wherein: the inner-layer high-temperature resistant aerogel heat insulation blanket (2) is 5mm in specification and is wrapped by 1 layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922357695.XU CN212407824U (en) | 2019-12-25 | 2019-12-25 | Aerogel heat insulation blanket composite heat insulation process structure for high-temperature pipeline |
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| CN201922357695.XU CN212407824U (en) | 2019-12-25 | 2019-12-25 | Aerogel heat insulation blanket composite heat insulation process structure for high-temperature pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151653A (en) * | 2021-12-09 | 2022-03-08 | 上海大音希声新型材料有限公司 | Heat-insulating aerogel sleeve block group for square-shaped pipeline |
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- 2019-12-25 CN CN201922357695.XU patent/CN212407824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151653A (en) * | 2021-12-09 | 2022-03-08 | 上海大音希声新型材料有限公司 | Heat-insulating aerogel sleeve block group for square-shaped pipeline |
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