CN207178951U - A kind of compound cold insulation structure of deep cooling pipeline - Google Patents
A kind of compound cold insulation structure of deep cooling pipeline Download PDFInfo
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- CN207178951U CN207178951U CN201721066955.2U CN201721066955U CN207178951U CN 207178951 U CN207178951 U CN 207178951U CN 201721066955 U CN201721066955 U CN 201721066955U CN 207178951 U CN207178951 U CN 207178951U
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Abstract
A kind of compound cold insulation structure of deep cooling pipeline; cold insulation structure is annularly arranged on pipeline by Cryo Heat Insulation layer, low temperature elasticity layer, hydrophobic heat insulation layer and coat of metal successively from the inside to the outside, and Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic heat insulation layer therein are flexible material；Cryo Heat Insulation layer is formed by the grafting of combination block I, low temperature elasticity layer is formed by the grafting of combination block II, hydrophobic heat insulation layer is formed by the grafting of combination block III, and adjacent combination block III is docked by the T-slot of setting and T-shaped grafting block, and cold insulation glue is filled between the outer wall of T-shaped grafting block and the inwall of T-slot；The inside of Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic heat insulation layer is evenly equipped with independent totally enclosed bubble.Cold insulation structure of the present utility model remains to keep good flexility under 162 DEG C of working condition, and material internal structure is continual and steady, continues persistently to play cold insulation effect according to different concrete functions per layer material.
Description
Technical field
The utility model belongs to Thermo Isolation Technique field, and in particular to a kind of compound cold insulation structure of deep cooling pipeline.
Background technology
The consumption proportion of Global Oil and coal is on a declining curve always, and only natural gas remains vigorous growth gesture
Head, increase increasingly in energy-consuming ratio.As the whole world is to naturally asking the continuous growth of demand, transport, the storage of natural gas
Efficiency also becomes more and more important, and liquified natural gas（LNG）Density be probably 600 times of gaseous natural gas, this to transport
Defeated LNG is more efficient than transport natural gas, and therefore, LNG has become a kind of important transportation mode of natural gas, and this just needs
The laying of a large amount of cold insulation pipelines.
LNG transmission feature is low temperature（-162℃）, normal pressure transmission, and pipeline work environment often reaches 30-40 DEG C, ring
Border temperature is very big with medium temperature relative temperature difference, so the cold insulation effect, the fire protecting performance of cold insulation material to LNG transport pipelines will
Ask very high, key equipment, technological process, the cold insulation system of pipeline and the cold insulation pipe holder of domestic many natural gas liquefaction plants are
Introduced from foreign countries.
In LNG pipeline engineering, the poly- isomelamine fat PIR of generally use inorganic material foam glass, organic material or
The homogenous materials such as polyurethane PU R carry out cold insulation.Both materials respectively have the advantage and disadvantage of itself：Though using inorganic material foam glass
So there is a good behaviour in environmentally friendly, anti-aging, persistence, fire line etc., but to turn thermal conductivity factor big because of foam glass, reaches phase
Same technological requirement needs to increase the distance between cold insulation material thickness, increase pipeline, increases whole pipeline engineering volume, increases
Add project cost；In addition, also there is the shortcomings that installation is complicated, and cost is high, and fragility is big in foam glass；Use simple organic material
PIR or PUR, then it is poor to be showed in terms of anti-aging, persistence, fire protecting performance.
Utility model content
The utility model is in order to overcome the technical problem present in prior art, there is provided a kind of water proof, vapor-proof performance are good, resistance to
The compound cold insulation structure of deep cooling pipeline of corrosion, the low thermal conductivity with lasting stability and superelevation dampness performance, are protected at low temperature
It is cold functional, there is stronger water vapor penetrating power.
The utility model is that technical scheme is used by solving the above problems：A kind of compound cold insulation structure of deep cooling pipeline,
Cold insulation structure is annularly arranged by Cryo Heat Insulation layer, low temperature elasticity layer, hydrophobic heat insulation layer and coat of metal successively from the inside to the outside
On pipeline, Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic heat insulation layer therein are flexible material；Described Cryo Heat Insulation layer
Formed by some impartial grafting of combination block I, low temperature elasticity layer is formed by some impartial grafting of combination block II, hydrophobic heat insulation layer
Formed by some impartial grafting of combination block III, wherein, the edge of the adjacent combination block III ring structure axially vertical with pipeline
In, end of one of combination block III along its ring structure offers the T-slot of indent, and another combination block III is along its ring
Offered to the end of structure and be plugged on T-shaped grafting block in T-slot for coordinating, the outer wall of T-shaped grafting block and T-slot it is interior
Cold insulation glue is filled between wall；Wherein, the inside of Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic heat insulation layer is evenly equipped with independence
Totally enclosed bubble, and Cryo Heat Insulation layer, the size dimension of low temperature elasticity layer and the bubble in hydrophobic heat insulation layer and density are not
It is identical.
Preferably, the size dimension of Cryo Heat Insulation layer, low temperature elasticity layer and the bubble in hydrophobic heat insulation layer increases successively, low
The density of warm heat insulation layer, low temperature elasticity layer and the bubble distribution in hydrophobic heat insulation layer is sequentially reduced.
In the utility model, adjacent combination block I, the longitudinal seam of adjacent combination block II and adjacent combination block III and pipeline
It is axially in parallel；The ring plug joint of adjacent combination block I, adjacent combination block II and adjacent combination block III mutually staggers.
One of preferred embodiment：In the ring structure axially vertical with pipeline of the edge of adjacent combination block I, adjacent combination block
In the ring structure axially vertical with pipeline of II edge, at least one layer is provided with T-slot mutually isostructural with the end of combination block III and T
Type grafting block.
The two of preferred embodiment：The ring plug joint of adjacent combination block I and adjacent combination block II is to be hung down with the axial direction of pipeline
Straight planar structure.
In the utility model, the material of Cryo Heat Insulation layer is diene polymer resilient foam material；And Cryo Heat Insulation layer
It is 10-80mm along with the axially vertical thickness of pipeline.
In the utility model, the material of low temperature elasticity layer is diene polymer resilient foam material；And low temperature elasticity layer
It is 10-80mm along with the axially vertical thickness of pipeline.
In the utility model, the material of hydrophobic heat insulation layer is butyronitrile polymer elasticity expanded material；And hydrophobic heat insulation layer edge
It is 10-80mm with the axially vertical thickness of pipeline.
In the utility model, coat of metal is 0.5-5mm along with the axially vertical thickness of pipeline.
Cryo Heat Insulation layer bubble is smaller, and density of material is relatively large, and quality is relatively hard, and air entrapment is all independent full envelope
Close, there is good mechanical performance and low thermal conductivity.
Low temperature elasticity layer bubble is larger, and density of material is relatively small, and quality is softer, and air entrapment is all totally-enclosed for independence,
With good pliability and ultra-low thermal conductivity.
Hydrophobic heat insulation layer possesses hydrophobicity while possessing flexibility characteristics, effectively steam can be prevented to enter inside.
Coat of metal has superpower impact resistance, while has preferable protective value to internal three layers, effectively resistance
Only internal three layers of generation aging.
Beneficial effect：（1）It is provided with inside Cryo Heat Insulation layer, low temperature elasticity layer and each layer of hydrophobic heat insulation layer independent totally enclosed
Bubble, when pipeline produces flexible, internal bubble plays compensating action, dilation need not be set to stitch during installation, constructed
Simplicity, save cost.
（2）Trilaminate material is flexible cold insulation material inside Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic heat insulation layer,
Even if cold insulation is first carried out, lifting construction is also not in Cold-keeping Layer explosion to pipeline again.It is time saving and energy saving meanwhile site operation is convenient,
Construction quality will not be influenceed because of seasonal factor；Installation adaptability is good, and engineering cost is low, easy to maintenance, is the gas of low temperature environment
Body is adiabatic, LNG accumulatings bring more safe and reliable solution, with the use of special cold insulation glue, ensure that system
Air-tightness；Under -162 DEG C of working condition, remain to keep good flexility, material internal structure is continual and steady, every layer
Material continues persistently to play cold insulation effect according to different concrete functions.
（3）T-shaped grafting block docks with the cooperation of T-slot, makes both ends progress of the cell wall of T-slot to T-shaped grafting block spacing,
Adjacent combination block is avoided axially to be disengaged along pipeline；After being bonded buckle using cold insulation glue, T-shaped grafting block and T-slot had both been increased
The bond area and adhesion strength of cold insulation glue in cladding embedding-and-buckling-structured；Meanwhile T-shaped grafting block and the bending structure of T-slot can
Improve the resistance of steam infiltration, per layer material seam between combine closely, formed and excellent oozed every vapour damp-proof layer, isolation steam
Thoroughly.
（4）During internal trilaminate material construction, seam uses misconnection structure, and every layer of seam is spaced, on the one hand can carry
High overall cold insulation effect, security of system energy is improved, on the other hand, improve water vapor penetrating power.
（5）Internal trilaminate material fire-protection rating reaches that GB8624-2012 B1 levels are fire retardant, whole system is possessed brilliance
Fire protecting performance, the security performance that the system of greatly promoting uses.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is the schematic diagram of embodiment 1；
Fig. 3 is the fractionation schematic diagram of combination block III in Fig. 2；
Fig. 4 is the schematic diagram of embodiment 2.
Reference：1st, pipeline, 2, Cryo Heat Insulation layer, 20, combination block I, 3, low temperature elasticity layer, 30, combination block II, 4, dredge
Water heat insulation layer, 40, combination block III, 5, coat of metal, 6, T-slot, 7, T-shaped grafting block, 8, bubble, 9, longitudinal seam, 10, ring
To plug joint.
Embodiment
Technological means, creation characteristic and the purpose reached to realize the utility model readily appreciate, with reference to
Specific schematic diagram, the utility model is expanded on further, but the utility model scope claimed is not limited to specific reality
Apply the scope described in mode.
A kind of compound cold insulation structure of deep cooling pipeline, as shown in figure 1, cold insulation structure is from the inside to the outside successively by cylinder-like structure
Cryo Heat Insulation layer 2, low temperature elasticity layer 3, hydrophobic heat insulation layer 4 and coat of metal 5 are annularly arranged on pipeline 1.
As shown in Figure 2 and Figure 4, Cryo Heat Insulation layer 2 therein is formed by some impartial grafting of combination block I 20, low temperature bullet
Property layer 3 is formed by some impartial grafting of combination block II 30, hydrophobic heat insulation layer 4 by some impartial grafting of combination block III 40 and
Into, in each layer after corresponding combination block docking, along the longitudinal seam 9 as shown in Figure 1 that has been axially formed of pipeline 1, edge and pipe
The axially vertical section in road 1, form ring plug joint 10 as shown in Figure 1.I.e. adjacent combination block I 20, adjacent combination
Block II 30 and the longitudinal seam of adjacent combination block III 40 are axially in parallel with pipeline 1.As shown in Figure 2 and Figure 4, adjacent combination block I
20th, the ring plug joint of adjacent combination block II 30 and adjacent combination block III 40 mutually staggers.
Wherein, Cryo Heat Insulation layer 2, low temperature elasticity layer 3 and hydrophobic heat insulation layer 4 are flexible material.Wherein, Cryo Heat Insulation layer
2nd, the inside of low temperature elasticity layer 3 and hydrophobic heat insulation layer 4 is evenly equipped with independent totally enclosed bubble, and Cryo Heat Insulation layer 2, low temperature bullet
The size dimension and density of property layer 3 and the bubble in hydrophobic heat insulation layer 4 differ.Abscess is fine and closely woven uniformly, each layer Air Bubble Size
Slightly different with density, internal added material is also slightly different according to function.Thermal conductivity factor is only the 1/3 of hard cold insulation material,
Density is the 1/5 of hard cold insulation material, and fire resistance is stronger.
Preferably, the size dimension of Cryo Heat Insulation layer 2, low temperature elasticity layer 3 and the bubble in hydrophobic heat insulation layer 4 increases successively
Greatly, the density of Cryo Heat Insulation layer 2, low temperature elasticity layer 3 and the bubble distribution in hydrophobic heat insulation layer 4 is sequentially reduced.
In the utility model, the material of Cryo Heat Insulation layer 2 is mainly diene polymer resilient foam material；And low temperature is exhausted
Thermosphere 2 is 10-80mm along with the axially vertical thickness of pipeline 1；The material of low temperature elasticity layer 3 is mainly diene polymer elasticity
Expanded material；And low temperature elasticity layer 3 is 10-80mm along with the axially vertical thickness of pipeline；The material of hydrophobic heat insulation layer 4 is mainly
Butyronitrile polymer elasticity expanded material；And hydrophobic heat insulation layer 4 is 10-80mm along with the axially vertical thickness of pipeline 1.Preferably,
Cryo Heat Insulation layer 2, low temperature elasticity layer 3, the thickness ratio of 4 three layers of hydrophobic heat insulation layer are 1.5：1：1.
After flexible material of the present utility model, cold insulation gross thickness is generally the 60-70% of hard cold insulation material thickness,
Materials save 1/3.
In the utility model, coat of metal 5 is 0.5-5mm along with the axially vertical thickness of pipeline 1.
As shown in figure 3, in the ring structure axially vertical with pipeline 1 of the edge of adjacent combination block III 40, one of group
Close the T-slot 6 that end of the block III along its ring structure offers indent, another end of combination block III along its ring structure
Offer for coordinating the T-shaped grafting block 7 being plugged in T-slot 6, filled out between the outer wall of T-shaped grafting block 7 and the inwall of T-slot 6
Filled with cold insulation glue, seam crossing is not easy to come unglued, and steadiness is preferable.
In the utility model, each layer will use special cold insulation glue to construct, and seam crossing is smeared uniform；Material after dismounting
Material is available, and it is simple to return dress process.When combination block is docked, need to ensure：
（1）Full coat：All contact surfaces are required to brush glue on material.
（2）Desiccation：, it is necessary to wait glue desiccation after glue is brushed, i.e., brush coating is touched with support, surface is without wire drawing.
（3）It is wet to connect：Bonded without waiting glue desiccation, only may be used at the position that material is squeezed.
The utility model uses flexible material, and low heat conductivity can be with high water-resisting property, high-mechanical property and high fire line, scene
Installation is convenient, flexible, cost-effectively solves the heat-insulating problem of the inflammable medium pipeline of deep cooling.
Embodiment 1
A kind of compound cold insulation structure of deep cooling pipeline, form the Cryo Heat Insulation layer 2 of cold insulation structure, low temperature elasticity layer 3, it is hydrophobic absolutely
The structure of thermosphere 4 and coat of metal 5, material, thickness etc. are as described above.Wherein, as shown in Fig. 2 adjacent combination block I 20
The ring plug joint to be formed, the edge of adjacent combination block II 30 and the axle of pipeline 1 are docked along the ring structure axially vertical with pipeline 1
Dock the ring plug joint to be formed to vertical ring structure, be by T-slot 6 mutually isostructural with the end of combination block III 40 and
The T-shaped docking of grafting block 7 forms.
Embodiment 2
A kind of compound cold insulation structure of deep cooling pipeline, form the Cryo Heat Insulation layer 2 of cold insulation structure, low temperature elasticity layer 3, it is hydrophobic absolutely
The structure of thermosphere 4 and coat of metal 5, material, thickness etc. are as described above.Wherein, as shown in figure 4, adjacent combination block I 20
The ring plug joint to be formed, the edge of adjacent combination block II 30 and the axle of pipeline 1 are docked along the ring structure axially vertical with pipeline 1
The ring plug joint to be formed is docked to vertical ring structure, is the axially vertical planar structure with pipeline 1.
In other embodiment of the present utility model, the ring plug joint of adjacent combination block I can also be arranged to by T-shaped
Groove and the docking of T-shaped grafting block form, and the ring plug joint of adjacent combination block II is arranged to the axially vertical planar junction with pipeline
Structure；Or the ring plug joint of adjacent combination block I is arranged to the axially vertical planar structure with pipeline, adjacent combination block
II ring plug joint is arranged to be formed by T-slot and the docking of T-shaped grafting block；Or can also Cryo Heat Insulation layer 2, low temperature bullet
Property the ring grafting that is formed by T-slot and the docking of T-shaped grafting block of layer 3, hydrophobic heat insulation layer 4 wherein any two layers or one layer of use
Seam.
Foregoing exemplary illustrates and helps to further understand the utility model.But embodiment detail is merely to explanation
The utility model, whole technical schemes under the utility model design are not represented, therefore should not be construed as to the utility model
Technical scheme restriction.Some are changed without departing from the unsubstantiality of the utility model design, such as with same or similar
The technical characteristic of technique effect simply changes or replaced, and belongs to the utility model rights protection scope.
Claims (9)
- A kind of 1. compound cold insulation structure of deep cooling pipeline, it is characterised in that：Cold insulation structure is from the inside to the outside successively by Cryo Heat Insulation layer, low Warm elastic layer, hydrophobic heat insulation layer and coat of metal are annularly arranged on pipeline, Cryo Heat Insulation layer therein, low temperature elasticity layer It is flexible material with hydrophobic heat insulation layer；Described Cryo Heat Insulation layer is formed by some impartial grafting of combination block I, low temperature elasticity Layer is formed by some impartial grafting of combination block II, and hydrophobic heat insulation layer is formed by some impartial grafting of combination block III, wherein, phase In the ring structure axially vertical with pipeline of the edge of adjacent combination block III, end of one of combination block III along its ring structure The T-slot of indent is offered, another end of combination block III along its ring structure offers is plugged on T-slot for cooperation In T-shaped grafting block, cold insulation glue is filled between the outer wall of T-shaped grafting block and the inwall of T-slot；Wherein, Cryo Heat Insulation layer, The inside of low temperature elasticity layer and hydrophobic heat insulation layer is evenly equipped with independent totally enclosed bubble, and Cryo Heat Insulation layer, low temperature elasticity layer and The size dimension and density of bubble in hydrophobic heat insulation layer differ.
- A kind of 2. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：Cryo Heat Insulation layer, low temperature The size dimension of elastic layer and the bubble in hydrophobic heat insulation layer increases successively, Cryo Heat Insulation layer, low temperature elasticity layer and hydrophobic thermal insulation The density of bubble distribution in layer is sequentially reduced.
- A kind of 3. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：It is adjacent combination block I, adjacent The longitudinal seam and pipeline of combination block II and adjacent combination block III it is axially in parallel；Adjacent combination block I, adjacent combination block II and phase The ring plug joint of adjacent combination block III mutually staggers.
- A kind of 4. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：Adjacent combination block I Along in the ring structure axially vertical with pipeline, in the ring structure that the edge of adjacent combination block II is axially vertical with pipeline, extremely Few one layer is provided with T-slot mutually isostructural with the end of combination block III and T-shaped grafting block.
- A kind of 5. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：Adjacent combination block I and phase The ring plug joint of adjacent combination block II is the axially vertical planar structure with pipeline.
- A kind of 6. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：The material of Cryo Heat Insulation layer For diene polymer resilient foam material；And Cryo Heat Insulation layer is 10-80mm along with the axially vertical thickness of pipeline.
- A kind of 7. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：The material of low temperature elasticity layer For diene polymer resilient foam material；And low temperature elasticity layer is 10-80mm along with the axially vertical thickness of pipeline.
- A kind of 8. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：The material of hydrophobic heat insulation layer For butyronitrile polymer elasticity expanded material；And hydrophobic heat insulation layer is 10-80mm along with the axially vertical thickness of pipeline.
- A kind of 9. compound cold insulation structure of deep cooling pipeline according to claim 1, it is characterised in that：Coat of metal edge and pipe The axially vertical thickness in road is 0.5-5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721066955.2U CN207178951U (en) | 2017-08-24 | 2017-08-24 | A kind of compound cold insulation structure of deep cooling pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721066955.2U CN207178951U (en) | 2017-08-24 | 2017-08-24 | A kind of compound cold insulation structure of deep cooling pipeline |
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| CN207178951U true CN207178951U (en) | 2018-04-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720630A (en) * | 2020-06-12 | 2020-09-29 | 江苏中圣管道工程技术有限公司 | LNG low-temperature prefabricated cold insulation pipe and manufacturing method thereof |
| CN112352124A (en) * | 2019-10-08 | 2021-02-09 | 东仁工程株式会社 | Heat insulation device of low-temperature pipeline |
| CN113329939A (en) * | 2019-05-23 | 2021-08-31 | 株式会社 Sungmoon | Liquefied natural gas delivery pipe for fuel supply of ship engine |
-
2017
- 2017-08-24 CN CN201721066955.2U patent/CN207178951U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113329939A (en) * | 2019-05-23 | 2021-08-31 | 株式会社 Sungmoon | Liquefied natural gas delivery pipe for fuel supply of ship engine |
| CN112352124A (en) * | 2019-10-08 | 2021-02-09 | 东仁工程株式会社 | Heat insulation device of low-temperature pipeline |
| CN112352124B (en) * | 2019-10-08 | 2022-03-08 | 东仁工程株式会社 | Heat insulation device of low-temperature pipeline |
| CN111720630A (en) * | 2020-06-12 | 2020-09-29 | 江苏中圣管道工程技术有限公司 | LNG low-temperature prefabricated cold insulation pipe and manufacturing method thereof |
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