CN106195528A - A kind of composite heat-insulating layer - Google Patents
A kind of composite heat-insulating layer Download PDFInfo
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- CN106195528A CN106195528A CN201610302833.2A CN201610302833A CN106195528A CN 106195528 A CN106195528 A CN 106195528A CN 201610302833 A CN201610302833 A CN 201610302833A CN 106195528 A CN106195528 A CN 106195528A
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- inner protective
- insulation
- protective layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
- F16L59/025—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves with more then two segments
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- General Engineering & Computer Science (AREA)
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- Thermal Insulation (AREA)
Abstract
The invention provides a kind of composite heat-insulating layer, including pipeline or equipment matrix, the inner protective layer of at least more than a layer and the heat-insulation layer of at least more than a layer；Wherein, being pasted with described inner protective layer, heat-insulation layer outside described pipeline or equipment matrix successively, described inner protective layer, heat-insulation layer are alternately arranged, and the seam crossing of every layer is staggered to realize without heat loss through convection mutually.While the composite heat-insulating layer of the present invention is by carrying out compound use by heat-insulation layer and inner protective layer; and use unique fissure of displacement structure good to achieve heat insulation effect when mounted; heat-insulation layer uses durability degree to be significantly improved; heat loss is little; ensure that being smoothed out of normal production; give and use enterprise to save the expense that need to often change heat-insulation layer, create certain economic benefit.
Description
Technical field
The present invention relates to pipeline and insulation of equipment field, in particular to a kind of composite heat-insulating layer.
Background technology
Nowadays, steel mill, power plant, petrochemical plant and many manufacturing enterprises are numerous due to the pipeline on process units,
Therefore pipeline is taked good Insulation not only have energy-saving and cost-reducing realistic meaning, and can also reduce raw from source
Produce cost, thus reach the purpose of energy-saving and emission-reduction.When selecting pipe insulation material, in addition to considering the heat conductivity of material, also
It is considered as the indexs such as the water absorption rate of material, combustibility, intensity.
In prior art, pipe insulation mainly uses traditional single heat accumulating type material such as rock wool, alumina silicate fibre, single
Structure not only heat-insulating property is poor, and heat loss is relatively big, and such structure is under using after 1-2 heat insulation effect rapidly
Fall, heat-insulation layer hull-skin temperature gradually rises, and heat loss is very serious, so not only increases production cost, and adds
The loading of device, also can there is potential safety hazard in process units longtime running in this case.
In view of this, the special proposition present invention.
Summary of the invention
It is an object of the invention to provide a kind of composite heat-insulating layer, this complex heat-preservation Rotating fields is by by heat-insulation layer and interior guarantor
While sheath carries out compound use, solve the radiation loss of radiation, conduction, convection current, ensure that integral insulation construction is the most simultaneously
Little area of dissipation and radiation loss, and use the fissure of displacement structure of uniqueness to reach without heat loss through convection to realize insulation construction when mounted
To more preferable heat insulation effect, the service life of heat-insulation layer, heat insulation effect is made to be significantly improved, it is ensured that minimum heat radiation is damaged
Losing, heat power equipment, pipeline for enterprise provide preferably protection, and the fuel consumption reducing enterprise has saved frequent replacing guarantor
The expense of adiabator, also saves the production time simultaneously, improves production efficiency, and both can use on pipeline can also be at valve
Isothermal holding use is carried out on the equipment such as door.
In order to realize the above-mentioned purpose of the present invention, spy by the following technical solutions:
The invention provides a kind of composite heat-insulating layer, including pipeline or equipment matrix, the interior protection of at least more than a layer
Layer and the heat-insulation layer of at least more than a layer；
Wherein, described inner protective layer, heat-insulation layer, described interior protection it are pasted with outside described pipeline or equipment matrix successively
Layer, heat-insulation layer are alternately arranged, the seam crossing of every layer be staggered mutually to realize structure without heat loss through convection, adjacent two layers selects different
Material.
So-called high-temperature pipe refers to carry metal (other exotic material) the heat enginnering pipeline of High Temperature High Pressure, this pipe
Road is the most common in steel mill, power plant, petrochemical plant and many manufacturing enterprises, applies widely, just because of it uses
Frequency is high, and the heat-insulating property that the most how can conscientiously improve utilidor itself becomes the research side that current field is important
To, in prior art, pipe insulation mainly uses traditional single heat accumulating type material such as rock wool, alumina silicate fibre, and single structure is not
Only heat-insulating property is poor, and heat loss is relatively big, and such structure heat insulation effect dramatic decrease after using 1-2, insulation
Layer hull-skin temperature gradually rises, and heat loss is very serious, so not only increases production cost, and adds the negative of device
Lotus amount, also can there is potential safety hazard, therefore invention a kind of good heat insulating, heat waste in process units longtime running in this case
The composite heat-insulating layer losing little low cost again is technical problem the most urgently to be resolved hurrily.
Therefore, the present invention is to solve many technical problems present in prior art, it is provided that a kind of novel structure
Composite heat-insulating layer, alternately arranged inner protective layer, the heat-insulation layer of being coated with in the outside of pipeline matrix, and the seam crossing of every layer need
Being staggered mutually, also do not have any relevant report in this structure prior art, wherein inner protective layer is linear except having absorption
Expand, prevent between pipeline and material outside the effect of mutual extrusion and collision, it can also be ensured that the low heat transfer that heat-insulation layer maintenance is certain
Coefficient, heat conductivity, reduce area of dissipation and radiation loss, even if the process operation temperatures interval change of high-temperature pipe is compared
Greatly, it is also ensured that having good heat insulation effect, additionally the seam crossing of inner protective layer and the seam crossing of heat-insulation layer need to be staggered mutually
Opening, but this is the most small through commonly overlooked link during practice of construction, the present invention is by limiting such structure
It is possible to prevent heat loss through convection with the unnecessary heat loss caused, thus enhances heat-insulating property.
Wherein inner protective layer be ceramic fibre, containing pick fiber, crystal fibre, aeroge, aluminium silicate, rock wool, calcium silicates, many
Solidifying foam glass, thermodynamic barrier launch the one of which in the inner protective layer of glass, foam glass, emissive material, both can be soft
Material can also be hard material, has certain heat insulating effect, and the thickness of inner protective layer has certain control
Scope, preferably between 2-150mm, more excellent for 6-20mm, it is also possible to for 15mm, 25mm, 30mm, 40mm, 50mm, 60mm,
70mm, 80mm etc., inner protective layer the most also has the effect of decompression damping, and be possible to prevent pipeline shakes the heat-insulation layer to outer layer
Have an impact, the thickness of certain inner protective layer unsuitable blocked up, also should not be the thinnest because thickness does not reaches may not have shockproof decompression
And the certain heat transfer coefficient of heat-insulation layer outside maintaining, the effect of heat conductivity, thickness the thickest the most uneconomical also can increase scattered
The long-pending burden with high-temperature pipe itself of hot side, reduces the safety of manufacturing enterprise, it is therefore desirable to suitable according to concrete Operating condition adjustment
Thickness, but in the range of being preferably controlled in the suitable depth of above-mentioned requirements.Inner protective layer is typically selected has resistance to elevated temperatures
Heat-insulating heat-preserving material as protective layer.Utilize soft material as between hard material and matrix, hard material and hard material
Protective layer between material absorbs the integrity of linear expansion protection material.Medium temperature material high temperature resistant according to equipment pipe
Performance dispoal choice protective layer material, the protective layer material of dispoal choice should ensure that protective layer material and structure under the high temperature conditions
Complete.
Except inner protective layer, heat-insulation layer is ceramic fibre, containing pick fiber, crystal fibre, aeroge, aluminium silicate, rock wool, silicon
Acid calcium, coagulate more foam glass, thermodynamic barrier launch glass, foam glass, emissive material heat-insulation layer in one of which, rock wool,
Although calcium silicates, aluminium silicate heat-insulation layer heat loss are bigger, but also may be used by use of arranging in pairs or groups mutually with the protective layer of suitable depth
Ensure certain low thermal conductivity, and aeroge protective layer and many solidifying foam glass heat-insulation layers itself have good heat insulating ability
Can, the hydrophobicity performance of especially many solidifying foam glass heat-insulation layers itself is preferable with activity, and heat conductivity is low, so to supporting with it
The requirement of protective layer is then the highest, needs to adjust collocation according to practical situation and uses, and that discloses in the solution of the present invention is each
Kind of inner protective layer and heat-insulation layer all can be arranged in pairs or groups mutually uses, do not have specific requirement, flexible operation, and needs enter according to actual condition
Row sum-equal matrix.It addition, the thickness of heat-insulation layer is preferably controlled in certain scope, the THICKNESS CONTROL of heat-insulation layer is at 2-200mm, more excellent
Control at 50-100mm, it is also possible to for 35mm, 40mm, 60mm, 80mm, 90mm, 100mm, 120mm, 150mm etc., thickness control
Making suitable reason and be that thickness does not reaches the effect that may affect insulation, thickness is the thickest the most uneconomical also can increase high-temperature pipe
The burden in road itself, increases area of dissipation, reduces the safety of manufacturing enterprise, it is therefore desirable to suitable according to concrete Operating condition adjustment
Thickness, but in the range of being preferably controlled in the suitable depth of above-mentioned requirements.Inner protective layer reaches jointly with heat-insulation layer synergism
The effect of insulation.Choosing of heat-insulation layer is the heat conduction system according to temperature between inner protective layer and heat-insulation layer and heat-insulation layer step temperature
Number, heat transfer coefficient, farthest to reduce composite heat-insulating layer volume and to reduce area of dissipation and radiation loss, with under protection
The heat conductivity of one layer, heat transfer coefficient.And prior art commonly twines the measure area of dissipation of rock wool heat-preservation greatly, wrap up thermal insulating material
Expect more thick and heavy, the effect of certain anti-scald can only be played, do not reach energy conservation standard completely.
Noticeable being, heat-insulation layer is spliced to form by some heat insulation tiles, plate, blanket, felt, block, heat insulation tile,
Connection between plate, blanket, felt, block include insertion slot type connect, dock connect, bridging type connect, primary and secondary button connect, bonded
One of which in connection.For the ease of installing, heat-insulation layer itself cuts into some watts or plate or then block splices, and
To carry out cutting into two semicircles or multiple arcuation according to the size of utilidor, then with insertion slot type, dock, bridging type,
Primary and secondary button, bonded carry out install docking, so install dock after can ensure that there is no any space, it is to avoid showing of heat loss
As occurring, concrete to ensure to carry out the fissure of displacement with ectonexine when installing, to prevent heat loss through convection, this heat insulation tile of the present invention, plate it
Between splicing construction be that prior art does not has any record, only just can be carried out with reference to technical scheme,
By realizing the goal of the invention of the present invention.
In addition, in the outside of the inner protective layer farthest apart from described pipeline or equipment matrix, it is accompanied by external protection,
External protection is external protection or the external protection of resin material of metal material, if heat-insulation layer is designed to inner protective layer
When, external protection can alleviate high-temperature pipe itself preferably with the external protection of resin material, the external protection of resin material
Weight, reduce the heavy burdens, the external protection of metal material then be easier heat radiation, heat-insulating property is the best, but in prior art
Universal high-temperature pipe outermost layer is all the external protection using metal material, because the best waste heat spread out of of heat-insulating property can damage
The external protection of bad resin material.But, utilizing the composite heat-insulating layer of this structure of the present invention, outermost external protection is complete
Can use the external protection of resin material, because the present invention this composite heat-insulating layer structural thermal insulation performance is good, heat loss is little, because of
This impaired situation of external protection not having resin material occurs.The external protection of the present invention can be also to have phase transformation effect
The external protection made, its radiating rate is less than outermost inner protective layer, the radiating rate of heat-insulation layer.External protection has anti-
Rotten, attractive in appearance, also have reduction radiating rate, the effect of absorbing sound and lowering noise.
Preferably, present invention additionally comprises fastened layer, described fastened layer is attached at the outside of described protective layer and/or heat-insulation layer
To play fastening effect.
Preferably, the complex heat-preservation Rotating fields of the present invention also includes waterproof layer, preferably makes when heat-insulation layer needs waterproof
Waterproof layer is to improve the use persistence of heat-insulation layer, and described waterproof layer is close to the outer wall of described heat-insulation layer, and described waterproof layer includes
The waterproof layer of water-repellent paint material, the waterproof layer of glass woven fabric, metal material waterproof layer in one of which.
Finally, may also include the emission layer for improving thermodynamic barrier effect, described emission layer is close to described pipeline matrix,
And/or described emission layer is arranged between described inner protective layer and described heat-insulation layer, and/or described emission layer is arranged at distance institute
State between the farthest inner protective layer of pipeline matrix and described external protection.Emission layer itself has certain emissivity, can solve
The certainly thermal-radiating problem of high-temperature pipe, can be coated with one layer of material with emissivity during concrete operations or cladding emissive material is equal
Can.It specifically arranges position also the most flexibly, combines actual process operation temperature according to concrete operating mode, is adjusted.According to institute
The emissivity reasonable Arrangement emission layer of material selection can solve the radiant heat loss of equipment pipe.Emission layer has full method and sends out mutually
Penetrate between rate 0.80-0.99.
It addition, inner protective layer, heat-insulation layer, there is the emission layer heat transfer system according to material step temperature of thermodynamic barrier effect
Number, heat conductivity, full method phase emissivity reasonable Arrangement protect the material property of next layer, can damage by maximum solution heat loss through conduction
Lose, reduce insulation construction volume and reduce outermost area of dissipation.Inner protective layer, heat-insulation layer, there is the transmitting of thermodynamic barrier effect
Layer every layer between rub with the hands seam install, between the material of hard or blanket type insulation and material select insertion slot type is connected, dock connect
Connect, dock bonding link, bridging type connects, primary and secondary button connects, one of which in bonded connection, solves heat loss through convection
Loss.
The present invention is the content needing to consider following several respects when whole complex heat-preservation Rotating fields is carried out rational deployment:
1. medium temperature；2. the convection heat transfer' heat-transfer by convection of material itself during high temperature；3. deformation when equipment and the vibrations of pipeline and variations in temperature；4.
Use the material deformation when variations in temperature；5. emission layer, protective layer, the structure of heat-insulation layer are arranged as lower layer of material and consider
Good performance；6. the thickness of every layer material；7. the resistance to elevated temperatures of material；8. the heat transfer coefficient of step temperature, heat conductivity；9.
The full normal emittance of step temperature；10. moistureproof and waterproof antiseptical performance；The 11. thawing circulations impact on quality of materials；12.
Outermost minimum heat area, radiation loss, moistureproof and waterproof anticorrosion, absorbing sound and lowering noise；13. overall heat-transfer coefficients；14. compound layouts
The energysaving effectiveness used.After taking into full account these several respects, comprehensive consideration is only carried out when carrying out practice of construction operation
After, can carry out building complex heat-preservation Rotating fields rather than the most careless carrying out selects just to draw scheme.
To sum up, preferably a kind of embodiment of the present invention can be: three layers of inner protective layer, two layers of heat-insulation layer, is followed successively by pipe
Road matrix, inner protective layer, heat-insulation layer, inner protective layer, heat-insulation layer, inner protective layer, be surrounded by external protection again outside inner protective layer, this
Plant embodiment and substantially can meet high-temperature service and the pipeline of arbitrary temp requirement (-273～1350 DEG C), belong to concrete installation
Than more preferably a kind of mode of operation during operation.More excellent embodiment is on three layers of inner protective layer, the basis of two-layer heat-insulation layer
On, the outside being close to pipeline matrix arranges one layer of emission layer again, to solve thermal-radiating problem, so so that heat-insulating property
Reach optimal.
Wherein, protective layer material includes: ceramic fibre, containing pick fiber, crystal fibre, aeroge, silicate, aluminium silicate,
Rock wool.
Heat-insulation layer material includes: aeroge, silicate, aluminium silicate, rock wool, calcium silicates, coagulates foam glass more, coagulate foam more
Glass, aeroge.
Emissive layer materials includes: high-emissivity material etc..
Prior art is compared, and the invention have the benefit that
1) the complex heat-preservation Rotating fields of the embodiment of the present invention is by carrying out the same of compound use by heat-insulation layer with inner protective layer
Time, and using the fissure of displacement structure of uniqueness to achieve heat insulation effect well when mounted, heat-insulation layer uses durability degree to obtain significantly
Promoting, heat loss is little；
2) this specific heat insulation layer structure of the present invention has the relatively low heat transfer coefficient of step temperature, heat conductivity, simultaneously
Solve conduction of heat, heat radiation and the problem of thermal convection current three aspect, reduce area of dissipation, radiation loss, omnibearing guarantee
Heat insulation effect, this complex heat-preservation Rotating fields the most still belongs to pioneering, either with or without any record in prior art, is worth
Widely popularize application, provide a kind of soluble approach for the insulation problem of manufacturing enterprise, low cost, easy to use, persistently
Degree height.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described.
Fig. 1 is the structure chart of the composite heat-insulating layer of the embodiment of the present invention one；
Fig. 2 is the docking structure figure between the warming plate in the heat-insulation layer of the embodiment of the present invention one；
Fig. 3 is the structure chart of the composite heat-insulating layer of the embodiment of the present invention two；
Fig. 4 is the docking structure figure between the warming plate in the heat-insulation layer of the embodiment of the present invention two；
Reference:
101-pipeline or equipment matrix；102-inner protective layer；
103-heat-insulation layer；104-external protection；
105-emission layer.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
Understanding, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.In embodiment unreceipted specifically
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument unreceipted production firm person, be
Can be by the commercially available conventional products bought and obtain.
Embodiment 1
Shoudu Iron and Steel Co steel-making RH stove superheat steam pipeline insulation improvement project, caliber DN325, length 906m, medium temperature 285
DEG C, it is as follows that step is implemented in experiment:
1, it is close to pipeline or equipment matrix 101 installs one layer of inner protective layer 102 containing pick fibrous material, the thickness of inner protective layer
Degree controls at 12mm；
2, installing full normal emittance according to the temperature between inner protective layer and heat-insulation layer selects thermodynamic barrier to launch glass
Emission layer 105, thickness is 50mm, cuts into multiple heat insulation tile, plate according to the surface configuration of heat power equipment and pipeline, is mutually lapped
Formula connects；
3, one layer of pottery fibre is installed in the outside being close to the emission layer 105 that full normal emittance selects thermodynamic barrier to launch glass again
The inner protective layer 102 of dimension material, thickness is 6mm；
4, according to the hull-skin temperature of preceding layer, then installing many solidifying foam glass adiabator heat-insulation layers 103, thickness is
50mm；
5, installing the inner protective layer 102 of one layer of fibrous material again, thickness is 20mm；
6, the outermost layer of inner protective layer uses metallic aluminium skin external protection 104 to be coated with, seam crossing between layers
The fissure of displacement that is staggered mutually is installed to realize without heat loss through convection.
Embodiment 2
30WM Main Steam Pipeline of Unit insulation improvement project, caliber DN325, length 170m, medium temperature 545 DEG C, experiment
Implement step as follows:
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of crystal fibre, the thickness control of inner protective layer
Make at 12mm using as the protective layer absorbing thermal expansion between pipeline matrix and heat-insulation layer damping of reducing pressure, with protective conduit matrix
With heat-insulation layer；
2, according to the hull-skin temperature of ground floor inner protective layer 102, then the heat-insulation layer 103 of one layer of calcium silicates material is installed,
The THICKNESS CONTROL of heat-insulation layer, at 50mm, cuts into multiple warming plate, mutual slot according to the surface configuration of heat power equipment and pipeline
Formula connects；
3, it is close to calcium silicates internal layer adiabator heat-insulation layer 103 and one layer of inner protective layer 102 containing zirconium fibrous material is installed again,
Thickness is 10mm；
4, according to the hull-skin temperature of third layer, the heat conductivity of the step temperature of insulation material installs calcium silicates material again
Heat-insulation layer 103, thickness is 50mm, the waterproof layer of the outside of heat-insulation layer cladding metal material；
5, installing one layer of inner protective layer 102 containing zirconium fibrous material again, thickness is 10mm；
6, the emission layer 105 hull-skin temperature according to layer 5 of thermodynamic barrier effect, leading of the step temperature of material are improved
Hot coefficient selects many solidifying foam glass 50mm shells or shoe monolayer overlap joint；
7, the external protection 104 that the outermost layer of inner protective layer uses high temperature resistant resin board to make is coated with, layer and layer it
Between seam crossing be staggered mutually the fissure of displacement install with realize without heat loss through convection, each layer is both needed to add fastened layer and carries out fastening process.
Embodiment 3
The Temple of Moon UNICOM of heating power Group Co., Ltd of Beijing line main line improvement project, caliber DN720, length 3920m, medium
Temperature 103 DEG C, it is as follows that step is implemented in experiment:
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of aeroge, the THICKNESS CONTROL of inner protective layer
At 2mm using as the protective layer absorbing thermal expansion between pipeline matrix and heat-insulation layer damping of reducing pressure, with protective conduit matrix with
Heat-insulation layer；
2, according to the hull-skin temperature of ground floor inner protective layer 102, then the heat-insulation layer of one layer of foam glass material is installed, protects
The THICKNESS CONTROL of temperature layer is at 40mm；
3, the external protection 104 that the outermost layer of inner protective layer uses high temperature resistant resin board to make is coated with, layer and layer it
Between seam crossing be staggered mutually the fissure of displacement install with realize without heat loss through convection, each layer is both needed to add fastened layer and carries out fastening process.
Embodiment 4
Jing Tang company cold rolling portion bell furnace improvement project, medium temperature 1250 DEG C, it is as follows that step is implemented in experiment:
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 that one layer of high-temperature resistant coating spraying is formed, interior protection
The THICKNESS CONTROL of layer at 10mm using as the protective layer absorbing thermal expansion between pipeline matrix and heat-insulation layer damping of reducing pressure, to protect
Pillar road matrix and heat-insulation layer；
2, according to the hull-skin temperature of ground floor inner protective layer 102, then one layer of heat-insulation layer containing zirconium Fiber Materials is installed
103, the THICKNESS CONTROL of heat-insulation layer 103, at 150mm, cuts into multiple warming plate according to the surface configuration of heat power equipment and pipeline,
Formation adhered to one another；
3, it is close to calcium silicates internal layer adiabator heat-insulation layer 103 and one layer of inner protective layer 102 containing zirconium fibrous material is installed again,
Thickness is 10mm；
4, according to the hull-skin temperature of third layer, one layer of heat-insulation layer containing zirconium Fiber Materials, the thickness control of heat-insulation layer are installed
Make at 200mm, cut into multiple warming plate, formation adhered to one another according to the surface configuration of heat power equipment and pipeline, utilize containing zirconium
Multiple modules insulation formed protect next layer；
5, installing the inner protective layer 102 of one layer of aerogel material again, thickness is 10mm；
6, the outermost layer of inner protective layer uses the external protection 104 of 310S high temperature resistant stainless steel to be coated with, layer and layer it
Between seam crossing be staggered mutually, the fissure of displacement install with realize without heat loss through convection, each layer is both needed to add fastened layer and carries out fastening process.
In above example, inner protective layer, heat-insulation layer are respectively provided with effect of insulation, and therefore on gauge, both are can
With exchange.
Embodiment 5
Unicom pipeline improvement project made steel by Shoudu Iron and Steel Co 1.2, caliber DN377, length 1300m, medium temperature 210 DEG C, and experiment is real
Execute step as follows:
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of aeroge, the THICKNESS CONTROL of inner protective layer
At 12mm；
2, according to the surface temperature of inner protective layer 102, the biography of the step temperature of insulation material, heat conductivity, full method is installed
Selecting thermodynamic barrier to launch the emission layer 105 of glass to emissivity, the THICKNESS CONTROL of emission layer is taken at 60mm, shell or shoe monolayer
Connect the fissure of displacement between protective layer and (needing fastening) is installed；
3, outermost layer uses the external protection 104 that fire resistant resin sheet material makes, compared to traditional galvanized iron sheet, aluminum skin
Maximum reduces radiation loss.
Embodiment 6
Jing Tang company 30WM unit reheat steam pipeline modification engineering, caliber DN325, length 170m, medium temperature 545
DEG C, it is as follows that step is implemented in experiment:
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of polycrystalline fibre material, the thickness of inner protective layer
Degree controls at 12mm, to protect heat transfer coefficient and the heat conductivity of heat-insulation layer；
2, according to the hull-skin temperature of ground floor inner protective layer 102, then the heat-insulation layer 103 of one layer of aluminium silicate material is installed,
The THICKNESS CONTROL of heat-insulation layer, at 50mm, cuts into multiple warming plate, mutual slot according to the surface configuration of heat power equipment and pipeline
Formula connects, and utilizes the heat-insulating property of aluminium silicate to protect next layer；
3, installing one layer of inner protective layer 102 containing pick fibrous material again, the THICKNESS CONTROL of inner protective layer is at 10mm；
4, according to the hull-skin temperature of last layer, then the heat-insulation layer 103 of one layer of aluminium silicate material is installed, the thickness of heat-insulation layer
Control at 30mm, utilize the heat-insulating property of aluminium silicate to protect next layer；
5, installing the inner protective layer 102 of one layer of ceramic fibre material again, the THICKNESS CONTROL of inner protective layer is at 5mm；
6, according to the surface temperature of last layer, the heat conductivity of the step temperature of insulation material selects the insulation of rock wool material
Layer 103, the thickness of heat-insulation layer is 50mm；
7, installing the inner protective layer 102 of one layer of ceramic fibre material again, the THICKNESS CONTROL of inner protective layer is at 5mm；
8, according to the surface temperature of last layer, the heat conductivity of the step temperature of insulation material selects the insulation of rock wool material
Layer 103, the thickness of heat-insulation layer is 30mm；
9, the waterproof layer that glass wool cloth, fire resistant resin make；
10, outermost layer uses the external protection 104 that aluminum leather is made.
Embodiment 7
Jing Tang company hot rolling 1580 roughing thermal insulation cover improvement project, medium temperature 1350 DEG C；
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of GH99 sheet material, the thickness control of inner protective layer
Making at 20mm, double buckle connects, and has high temperature corrosion-resisting function；
2, the emission layer 105 of one layer of sintering emissive material is installed, intercepts hyperthermia radiation；
3, installing the inner protective layer 102 of one layer of polycrystalline fibre material again, the THICKNESS CONTROL of inner protective layer is at 12mm；
4, according to the hull-skin temperature of last layer, then one layer of heat-insulation layer 103 containing pick Fiber Materials, the thickness of heat-insulation layer are installed
Degree controls at 30mm, utilizes the heat-insulating property containing pick module to protect next layer；
5, installing the inner protective layer 102 of one layer of ceramic fibre material again, the THICKNESS CONTROL of inner protective layer is at 12mm；
6, according to the surface temperature of last layer, the heat conductivity of the step temperature of insulation material selects the guarantor of aeroge material
Temperature layer 103, the thickness of heat-insulation layer is 6-12mm, utilizes the heat-insulating property of aeroge to protect next layer；
7, installing the inner protective layer 102 of solidifying foam glass material more than a layer again, the THICKNESS CONTROL of inner protective layer is at 50mm, son
Box formula connects；
8, outermost layer uses the external protection 104 of thickness 5mm cover plate.
Embodiment 8
Space flight three phase plume water conservancy diversion deep refrigerating project, medium temperature-265 DEG C, diameter 159 length 105 meters, heat-insulation layer outer surface
Temperature rise 2 DEG C is freezed without frosting；
1, it is close to pipeline or equipment matrix 101 installs the inner protective layer 102 of one layer of crystal fibre, the thickness control of inner protective layer
System is at 2mm；
2, according to the hull-skin temperature of ground floor inner protective layer 102, then the insulation of solidifying foam glass material more than a layer is installed
Layer 103, the THICKNESS CONTROL of heat-insulation layer 103 is at 50mm；
3, installing the inner protective layer 102 of one layer of crystal fibre, the THICKNESS CONTROL of inner protective layer is at 2mm；
4, according to the hull-skin temperature of inner protective layer 102, then the heat-insulation layer 103 of solidifying foam glass material more than a layer is installed,
The THICKNESS CONTROL of heat-insulation layer 103 is at 50mm；
5, outermost layer uses the external protection 104 that aluminium sheet makes.
Comparative example 1
Application experiment ground point selection, during Qian'an, Datang world thermoelectricity 220MW major overhaul is stopped transport, has carried out compound guarantor
Temperature layer implements structure of modification, and unit steam and reheated steam section of tubing have carried out insulation transformation, and experiment implements step such as
Under:
1, Pipe installing two-layer decompression buffer layer and zirconium-containing alumina fiber transition zone it are close to；
2, rock wool heat-storing material is installed to protect；
3, insulation material outermost layer uses metallic aluminium skin to be coated with.
Experimental example 1
After the performance of above-described embodiment 1 with the insulation material of the application experiment of comparative example 1 is contrasted: examination criteria:
According to standard GB/T/T4272-1992, GB/T8174-1987, GB/T18021-2000, GB/T16617-1996, CJ/
T140-2001.The embodiment outer surface mean temperature of comparative example 1 is 165 DEG C, and area of dissipation is 408 square meters.Embodiment 1
Outer surface mean temperature is 50 DEG C, and area of dissipation is 397 square meters.Reduce radiation loss 115 DEG C, reduce area of dissipation 11 square meter.
The guarantor of the heating power induction system throughout the year run in standard GB/T/T15910-2009 heating power induction system energy-saving monitoring standard
In the maximum permissible value of temperature body structure surface temperature rise, the highest medium temperature of regulation is 350 DEG C.
Economic benefit aspect: calculate according to standard GB/T/T15910-2009, according to 30MW generator set heat radiation area
4600 square meters calculate, and compared with comparative example 1, can save standard coal 13616 tons, direct economic benefit 6,800,000 yuans every year.
Experimental example 2
After the performance of above-described embodiment 2 with the insulation material of the application experiment of comparative example 1 is contrasted: examination criteria:
According to standard GB/T/T4272-1992, GB/T8174-1987, GB/T18021-2000, GB/T16617-1996, CJ/
T140-2001.The embodiment outer surface mean temperature of comparative example 1 is 165 DEG C, and area of dissipation is 408 square meters.Embodiment 2
Outer surface mean temperature is 50 DEG C, and area of dissipation is 397 square meters.Reduce radiation loss 115 DEG C, reduce area of dissipation 11 square meter.
The guarantor of the heating power induction system throughout the year run in standard GB/T/T15910-2009 heating power induction system energy-saving monitoring standard
In the maximum permissible value of temperature body structure surface temperature rise, the highest medium temperature of regulation is 350 DEG C.
Economic benefit aspect: calculate according to standard GB/T/T15910-2009, according to 30MW generator set heat radiation area
4600 square meters calculate, and can save standard coal 13616 tons, direct economic benefit 6,800,000 yuans compared with comparative example 1 every year.
The heat accumulating type Single-layer Insulation structural advantage that the heat-insulating property of the composite heat-insulating layer of the embodiment of the present invention is more traditional is obvious,
Energy-saving effect is notable, and the update for enterprise's novel heat insulation system provides new selection, for effectively reducing enterprise energy consumption water
Flat, Improve Efficiency space provides effective way.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
May be made that in the case of spirit and scope many other change and amendment.It is, therefore, intended that in the following claims
Including all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. a composite heat-insulating layer, it is characterised in that include pipeline or equipment matrix, at least more than one layer inner protective layer with
And the heat-insulation layer of at least more than a layer；
Wherein, described inner protective layer, heat-insulation layer, described inner protective layer, guarantor it are pasted with outside described pipeline or equipment matrix successively
Temperature layer compound use interacts, and alternately arranged to solve radiation, conduction, the radiation loss of convection current, the seam crossing of every layer is mutual
Stagger to realize structure without heat loss through convection, adjacent two layers selects different materials；
The material of described inner protective layer be ceramic fibre, containing pick fiber, crystal fibre, aeroge, aluminium silicate, rock wool, calcium silicates,
Many solidifying foam glass, thermodynamic barrier launch the one of which in glass, foam glass, emissive material, and the material of described heat-insulation layer is
Ceramic fibre, containing pick fiber, crystal fibre, aeroge, aluminium silicate, rock wool, calcium silicates, coagulate more foam glass, thermodynamic barrier launch
One of which in glass, foam glass, emissive material, described inner protective layer, heat-insulation layer compound use, to ensure step temperature
Time the material itself that used without convection heat transfer' heat-transfer by convection and ensure the heat transfer coefficient of step temperature, heat conductivity.
A kind of composite heat-insulating layer the most according to claim 1, it is characterised in that the THICKNESS CONTROL of described inner protective layer is at 2-
Between 150mm.
A kind of composite heat-insulating layer the most according to claim 2, it is characterised in that the THICKNESS CONTROL of described inner protective layer is at 6-
Between 20mm.
A kind of composite heat-insulating layer the most according to claim 1, it is characterised in that the THICKNESS CONTROL of described heat-insulation layer is at 2-
200mm。
A kind of composite heat-insulating layer the most according to claim 4, it is characterised in that the THICKNESS CONTROL of described heat-insulation layer is at 50-
150mm。
6. according to a kind of composite heat-insulating layer described in any one of claim 1-5, it is characterised in that described heat-insulation layer is by some guarantors
Wen Wa, plate, blanket, felt, block are spliced, the connecting method between described heat insulation tile, plate, blanket, felt, block include insertion slot type connect,
One of which in dock connection, bridging type connection, the connection of primary and secondary button, bonded connection.
7. according to a kind of composite heat-insulating layer described in any one of claim 1-5, it is characterised in that also include external protection, institute
State external protection to be coated on apart from the farthest inner protective layer of described pipeline or equipment matrix or the outside of heat-insulation layer.
A kind of composite heat-insulating layer the most according to claim 7, it is characterised in that described external protection is outside metal material
Protective layer, resin material, the external protection of sound-absorbing material or the external protection of phase-change material.
9. according to a kind of composite heat-insulating layer described in any one of claim 1-5, it is characterised in that also include fastened layer, waterproof
Layer, described fastened layer, waterproof layer are attached at described protective layer and/or the outside of described heat-insulation layer.
10. according to a kind of composite heat-insulating layer described in any one of claim 7, it is characterised in that also include for improving heat shielding
The emission layer of barrier effect, described emission layer is close to described pipeline matrix, and/or described emission layer be arranged at described inner protective layer with
Between described heat-insulation layer, and/or described emission layer is arranged at apart from the farthest inner protective layer of described pipeline matrix and described outer guarantor
Between sheath；
Preferably, the heat-preserving range of described composite heat-insulating layer controls between-273～1350 DEG C.
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