CN205560128U - Liquefied natural gas pipeline cold insulation structure - Google Patents
Liquefied natural gas pipeline cold insulation structure Download PDFInfo
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- CN205560128U CN205560128U CN201620135768.4U CN201620135768U CN205560128U CN 205560128 U CN205560128 U CN 205560128U CN 201620135768 U CN201620135768 U CN 201620135768U CN 205560128 U CN205560128 U CN 205560128U
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Abstract
The utility model provides a liquefied natural gas pipeline cold insulation structure, its by liquefied natural gas pipeline outer wall outwards set up foam glass layer in proper order, gather different cyanuric acid fat layer or polyurethane layer, bandage, inferior dampproof course, foam glass layer, main dampproof course, metal protection layer and bandage constitute, structural design is equitable, synthesizes inorganic material and organic material's advantage, on the basis of guaranteeing the cold insulation effect, effectively improves efficiency such as cold insulation structure persistence, fire line, the feature of environmental protection.
Description
Technical field
This utility model relates to a kind of pipeline cold insulation system, particularly relates to a kind of foam glass and organic material
The LNG pipeline cold insulation system of composition.
Background technology
In liquefied natural gas (LNG) pipeline engineering is built, owing to pipeline medium LNG temperature is extremely low (about
-162 DEG C), and pipeline work environment often reaches 30-40 DEG C, ambient temperature and medium temperature relative temperature difference
Very big, therefore the cold insulation of pipeline is required height.Generally inorganic material foam glass is used in LNG pipeline engineering
It is incubated with homogenous materials such as organic material PIR or PUR.Bi-material is respectively arranged with the pluses and minuses of self: nothing
Machine material foams glass has the advantages such as environmental protection, material aging resistance, persistency is good, fire protecting performance is good, but
There is heat conductivity high, cost is high, install complicated shortcoming；Organic material poly-fulminuric acid fat (PIR)
Layer or polyurethane (PUR) layer in terms of environmental protection, material aging resistance, persistency, fire protecting performance is not as good as nothing
Machine material foams glass, but there is low cost, heat conductivity advantage low, easy for installation.
In existing liquefied natural gas (LNG) pipeline cold insulation, generally use simple use inorganic material or organic
The mode of material, two kinds of ways have a respective shortcoming: although use inorganic material foam glass have environmental protection,
The aspects such as aging resistance, persistency, fire line have good behaviour, but because foam glass turns heat conductivity greatly,
The technological requirement reaching identical needs to increase cold insulation material thickness, increases the distance of pipeline enclosure, makes whole pipe
Road engineering volume becomes big, increases project cost, and foam glass there is also installation complexity, high in cost of production in addition
Shortcoming；Use simple machine material PIR or PUR then in terms of aging resistance, persistency, property in terms of fire protecting performance
It is poor to show.Therefore have much room for improvement.
Utility model content
Main purpose of the present utility model is that the disadvantages mentioned above overcoming existing product to exist provides a kind of liquid
Change natural gas line cold insulation structure, organic material and inorganic material in its Appropriate application existing product structure
Advantage, evades its shortcoming, is designed to three layers of cold insulation structure of two class material compositions, it is achieved cold insulation structure
Durable, energy-conservation, fireproof effect.
This utility model liquefied natural gas (LNG) pipeline cold insulation structure provides the benefit that: innermost layer uses
Foam glass material, can make full use of the low temperature resistant of foam glass and stable chemical performance not with metallic conduit
Chemical reaction occurs, and middle level uses organic material PIR or PUR heat conductivity is low and the advantage of low cost,
Outer layer uses foam glass to make use of foam glass fire prevention and aging-resistant advantage, arranges primary and secondary two-layer in addition
Damp-proof layer, plays water, the reliable isolation of vapour, so realize whole cold insulation system durability, energy-conservation,
Fire prevention, efficient feature.
The purpose of this utility model is realized by techniques below scheme:
This utility model LNG pipeline cold insulation structure, it is characterised in that by liquefied natural gas (LNG)
Pipeline outer wall the most outwards arranges foam glass layer, poly-fulminuric acid fat (PIR) layer or polyurethane (PUR)
Layer, bandage, secondary damp-proof layer, foam glass layer, main damp-proof layer, coat of metal and bandage are constituted.
Aforesaid LNG pipeline cold insulation structure, it is characterised in that described damp-proof layer is composite junction
Structure layer, this composite construction layer is constituted by adding one layer of aluminium foil in the middle of two layers polyester thin film；Described main damp-proof layer is
Horse hoof lipid layer；Described coat of metal is rustless steel flaggy or aluminum-plated steel flaggy；Described bandage (4) is
Stainless steel band.
Accompanying drawing explanation
Fig. 1 is this utility model overall structure schematic diagram.
Major Symbol explanation in figure: 1 is LNG pipeline, 2 foam glass layer, 3 poly-fulminuric acid fat (PIR)
Layer or polyurethane (PUR) layer, 4 bandages, No. 5 damp-proof layers, 6 main damp-proof layers, 7 coat of metals.
Detailed description of the invention
As it is shown in figure 1, this utility model LNG pipeline cold insulation structure, it is by liquefied natural gas (LNG)
Pipeline 1 outer wall the most outwards arranges foam glass layer 2, poly-fulminuric acid fat (PIR) layer or polyurethane
(PUR) layer 3, bandage 4, secondary damp-proof layer 5, foam glass layer 2, main damp-proof layer 6, coat of metal 7 with
And bandage 4 is constituted.Wherein, this damp-proof layer 5 is composite construction layer, and this composite construction layer is by two layers polyester
Add one layer of aluminium foil in the middle of thin film to constitute；This main damp-proof layer 6 is Horse hoof lipid layer；This coat of metal 7 is stainless
Steel plate layer or aluminum-plated steel flaggy；The present embodiment selects aluminum-plated steel flaggy；This bandage 4 is stainless steel band.
This use is novel waits when mounted, carry out successively according to order from inside to outside according to.First be
LNG pipeline outer wall installs inner foam glassy layer 2, and then installs poly-fulminuric acid fat (PIR)
Layer 3, then installs time damp-proof layer 5, installs outer foam glassy layer 2 afterwards, and outer foam glassy layer 2 is pacified
Fill main damp-proof layer 6, coat of metal 7 is finally installed.
This utility model LNG pipeline cold insulation structure makes full use of the advantage of cold insulation structure material, rule
Keep away material shortcoming, first, the inner foam glassy layer directly contacted with low-temperature liquefaction natural gas line, bubble
Foam glass materials chemistry performance is stable, will not be with pipeline material generation chemical attack, and foam glass is resistance in addition
Low temperature, it is possible to bear the temperature of cryogenic piping；Organic material strata fulminuric acid fat (PIR) layer or poly-ammonia
Ester (PUR) layer is positioned at outside inner foam glassy layer, can make full use of organic material heat conductivity little
Advantage, effectively reduces the gross thickness of pipeline Cold-keeping Layer, cost-effective；Outer foam glassy layer then utilizes it
Fire protecting performance and the advantage of ageing resistace, play the fire-retardant fireproof function of pipeline cold insulation material；Primary and secondary two
Layer damp-proof layer, plays water, the reliable isolation of vapour, and outermost coat of metal, it is right to further function as
Whole cold insulation system lasting, energy-conservation, fire prevention, efficiently protect.
The above, be only preferred embodiment of the present utility model, not appoint this utility model
What pro forma restriction, every according to technical spirit of the present utility model above example is made any
Simple modification, equivalent variations and modification, all still fall within the range of technical solutions of the utility model.
Claims (2)
1. a LNG pipeline cold insulation structure, it is characterised in that by liquefied natural gas (LNG) pipeline
(1) outer wall the most outwards arranges foam glass layer (2), poly-fulminuric acid fat (PIR) layer or polyurethane
(PUR) layer (3), bandage (4), secondary damp-proof layer (5), foam glass layer (2), main damp-proof layer (6),
Coat of metal (7) and bandage (4) are constituted.
LNG pipeline cold insulation structure the most according to claim 1, it is characterised in that
Described time damp-proof layer (5) is composite construction layer, and this composite construction layer is added by the middle of two layers polyester thin film
One layer of aluminium foil is constituted；
Described main damp-proof layer (6) is Horse hoof lipid layer；
Described coat of metal (7) is rustless steel flaggy or aluminum-plated steel flaggy；
Described bandage (4) is stainless steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135768.4U CN205560128U (en) | 2016-02-23 | 2016-02-23 | Liquefied natural gas pipeline cold insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135768.4U CN205560128U (en) | 2016-02-23 | 2016-02-23 | Liquefied natural gas pipeline cold insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205560128U true CN205560128U (en) | 2016-09-07 |
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ID=56819841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620135768.4U Active CN205560128U (en) | 2016-02-23 | 2016-02-23 | Liquefied natural gas pipeline cold insulation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN205560128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513544A (en) * | 2019-08-29 | 2019-11-29 | 中国海洋石油集团有限公司 | A kind of pipeline suitable for conveying ultralow temperature medium |
| CN110630851A (en) * | 2019-09-30 | 2019-12-31 | 河北中允利合保温材料有限公司 | Preparation method of PIR (pyroelectric Infrared ray) cryogenic prefabricated pipe |
| CN111911716A (en) * | 2020-08-13 | 2020-11-10 | 江苏嘉德管道工程有限公司 | Cryogenic working condition prefabricated cold insulation pipe |
-
2016
- 2016-02-23 CN CN201620135768.4U patent/CN205560128U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513544A (en) * | 2019-08-29 | 2019-11-29 | 中国海洋石油集团有限公司 | A kind of pipeline suitable for conveying ultralow temperature medium |
| CN110630851A (en) * | 2019-09-30 | 2019-12-31 | 河北中允利合保温材料有限公司 | Preparation method of PIR (pyroelectric Infrared ray) cryogenic prefabricated pipe |
| CN111911716A (en) * | 2020-08-13 | 2020-11-10 | 江苏嘉德管道工程有限公司 | Cryogenic working condition prefabricated cold insulation pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Offshore Oil Engineering Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: Offshore Oil Engineering Co., Ltd. Patentee before: China National Offshore Oil Corporation |