CN205980565U - Natural gas liquefaction cold box and natural gas liquefaction system - Google Patents
Natural gas liquefaction cold box and natural gas liquefaction system Download PDFInfo
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- CN205980565U CN205980565U CN201620523696.0U CN201620523696U CN205980565U CN 205980565 U CN205980565 U CN 205980565U CN 201620523696 U CN201620523696 U CN 201620523696U CN 205980565 U CN205980565 U CN 205980565U
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- China
- Prior art keywords
- heat exchanger
- natural gas
- gas liquefaction
- wall
- polyurethane layer
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Abstract
The application discloses natural gas liquefaction cold box and natural gas liquefaction system, the cold box that wherein liquefies include the casing, set up in the inside heat exchanger of casing and with the pipeline of heat exchanger intercommunication, shells inner wall with the heat exchanger and be provided with foaming polyurethane layer between the pipeline outer wall. Because the coefficient of heat conductivity of foaming polyurethane is very low, the heat loss that consequently enables the heat exchanger reduces to minimum, can prevent water, moisture and other multiple corrosive liquids, gaseous soaking moreover effectively, prevents breeding and developing of microorganism. Set up foaming polyurethane layer at the heat exchanger surface, because it is own waterproof, need not dry nitrogen and keep apart its and air, consequently shells inner wall with the heat exchanger and be provided with foaming polyurethane layer between the pipeline outer wall, can not only reach the waterproof effect of cold insulation to the heat exchanger, reduce the nitrogen gas that cold box cold insulation layer let in in addition, reduced the consumption of nitrogen gas.
Description
Technical field
The utility model is related to energy technology field, more particularly, it relates to a kind of natural gas liquefaction ice chest, further relates to one
Plant natural gas liquefaction system.
Background technology
Natural gas liquefaction ice chest is the key equipment of liquefied natural gas (LNG) plant, the heat exchanger of natural gas liquefaction cold box interior and
Pipeline needs to carry out cold insulation, realizes thermal insulation, but expand in prior art by the way of most expanded perlites using filling
Water in perlite meeting absorption air, in order to avoid the water in expanded perlite absorption air, needs to be passed through to ice chest Cold-keeping Layer
Drying nitrogen makes itself and air exclusion, but, nitrogen consumption is larger, not only increases the operating cost of factory, and can not fit
Should there is no the factory of the equipment of making nitrogen.
Therefore, those skilled in the art's urgency technical issues that need to address are to be passed through nitrogen to ice chest Cold-keeping Layer reducing in a large number
In the case of gas, how cold insulation is carried out to the heat exchanger of natural gas liquefaction cold box interior.
Utility model content
For solving above-mentioned technical problem, the utility model provides a kind of natural gas liquefaction ice chest, to natural gas liquefaction ice chest
Internal heat exchanger carries out cold insulation, can effectively reduce nitrogen consumption simultaneously.
For achieving the above object, the utility model provides following technical scheme：
A kind of natural gas liquefaction ice chest, the heat exchanger including housing, being arranged at described enclosure interior and with described heat exchange
The pipeline of device connection is sent out it is characterised in that being provided between described inner walls and described heat exchanger and described pipeline outer wall
Bubble layer of polyurethane.
Preferably, in above-mentioned natural gas liquefaction ice chest, described foamed polyurethane layer is arranged at described heat exchanger and institute
State the outer surface of pipeline, and the thickness of described foamed polyurethane layer is equal to described inner walls and described heat exchanger outer wall and institute
State the gap width between pipeline outer wall.
Preferably, in above-mentioned natural gas liquefaction ice chest, described foamed polyurethane layer is arranged at described heat exchanger and institute
State the outer surface of pipeline, and the thickness of described foamed polyurethane layer is less than described inner walls and described heat exchanger outer wall and institute
State the gap width between pipeline outer wall.
Preferably, in above-mentioned natural gas liquefaction ice chest, fill between described foamed polyurethane layer and described inner walls
There is expanded pearlite rock stratum.
Preferably, in above-mentioned natural gas liquefaction ice chest, described foamed polyurethane layer is arranged at described shell inner surface, and
The thickness of described foamed polyurethane layer is less than between described inner walls and described heat exchanger outer wall and described pipeline outer wall
Gap width.
Preferably, in above-mentioned natural gas liquefaction ice chest, described foamed polyurethane layer and described heat exchanger and described pipe
It is filled with described expanded pearlite rock stratum between the outer wall in road.
Preferably, in above-mentioned natural gas liquefaction ice chest, described housing is Cylinder Shell.
From technique scheme as can be seen that a kind of natural gas liquefaction ice chest provided by the utility model, including housing,
The heat exchanger being arranged at described enclosure interior and the pipeline that connects with described heat exchanger are it is characterised in that described inner walls
It is provided with foamed polyurethane layer and described heat exchanger and described pipeline outer wall between.Due to polyurathamc thermal conductivity factor very
Low, the heat loss of heat exchanger therefore can be made to minimize, and water, moisture and other multiple corruption can be effectively prevented
Corrosion liquid, being impregnated with of gas, prevent growing and developing of microorganism.In heat exchanger outer surface, foamed polyurethane layer is set, by
In itself waterproof, without drying nitrogen by itself and air insulated, therefore, described inner walls and described heat exchanger and described
When being provided with foamed polyurethane layer between pipeline outer wall, the effect of cold insulation waterproof can not only be reached by heat exchanger, and reduce cold
The nitrogen that case Cold-keeping Layer is passed through, decreases the consumption of nitrogen.
The utility model additionally provides a kind of natural gas liquefaction system, including the natural gas liquefaction as described in any of the above-described
Ice chest.
Brief description
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing providing.
A kind of natural gas liquefaction ice chest schematic diagram that Fig. 1 provides for the utility model embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of the utility model protection.
Refer to Fig. 1, a kind of natural gas liquefaction ice chest schematic diagram that Fig. 1 provides for the utility model embodiment.
In a kind of specific embodiment, there is provided a kind of natural gas liquefaction ice chest, mainly it is made up of two parts：One is
Shell, two is internal core aluminum plate-fin heat exchanger 2, also includes the multiple pipelines 3 connecting with described heat exchanger 2, housing 1
Space between inwall and described pipeline 3 outer wall and described heat exchanger 2 outer wall constitutes ice chest Cold-keeping Layer.In described housing 1
It is provided with foamed polyurethane layer 4 between wall and described heat exchanger 2 and described pipeline 3 outer wall, be provided with ice chest Cold-keeping Layer
Foamed polyurethane layer 4.
Heat exchanger 2 in natural gas liquefaction ice chest is usually moving seesaw-type heat exchanger 2, the multiple pipelines 3 connecting with heat exchanger 2
Function and specific connected mode refer to prior art with heat exchanger 2, will not be described here.Foamed polyurethane layer
4 thermal conductivity factors are very low, and the heat loss of heat exchanger 2 therefore can be made to minimize, and can be effectively prevented water, moisture with
And being impregnated with of other multiple corrosive liquids, gas, prevent growing and developing of microorganism.It is pointed out that the poly- ammonia that foams
Ester layer 4 can be arranged at the optional position between described housing 1 inwall and described heat exchanger 2 and described pipeline 3 outer wall, all exists
Within protection domain.
The natural gas liquefaction ice chest that the present embodiment provides, in described housing 1 inwall and described heat exchanger 2 and described pipeline
It is provided with foamed polyurethane layer 4 between 3 outer walls, the effect of cold insulation waterproof can not only be reached by heat exchanger 2, and reduce ice chest and protect
The nitrogen that cooling layer is passed through, decreases the consumption of nitrogen.
Foamed polyurethane layer 4 has many between described housing 1 inwall and described heat exchanger 2 and described pipeline 3 outer wall
Plant set-up mode, below for optional three kinds of specific embodiments.
In a preferred embodiment, described foamed polyurethane layer 4 is arranged at described heat exchanger 2 and described pipeline
3 outer surface, and the thickness of described foamed polyurethane layer 4 is equal to described housing 1 inwall and described heat exchanger 2 outer wall and described
Gap width between pipeline 3 outer wall.
Foamed polyurethane layer 4 be filled in described housing 1 inwall and described heat exchanger 2 outer wall and described pipeline 3 outer wall it
Between gap in, that is, foamed polyurethane layer 4 is filled up completely with ice chest Cold-keeping Layer.Foamed polyurethane layer 4 can pass through Shooting Technique
It is filled with, drying nitrogen need not be passed through to ice chest Cold-keeping Layer after filling it becomes possible to heat exchange to natural gas liquefaction cold box interior
Device 2 carries out cold insulation so that natural gas liquefaction ice chest is applied to the factory not having the equipment of making nitrogen, expands natural gas liquefaction cold
The scope of application of case.
In another kind of optional embodiment, described foamed polyurethane layer is arranged at described heat exchanger 2 and described pipe
The outer surface in road 3, and the thickness of described foamed polyurethane layer is less than described housing 1 inwall and described heat exchanger 2 outer wall and institute
State the gap width between pipeline 3 outer wall.
By being arranged at described heat exchanger 2 and described pipeline 3 in mould, by way of injection, by the poly- ammonia that foams
Ester is injected in the space between mould and heat exchanger 2 and pipeline 3, due between mould inner wall and heat exchanger 2 and pipeline 3
Space be less than ice chest Cold-keeping Layer, after the completion of injection, mould is removed, forms foamed polyurethane layer, this method can save
Blown polyurethane materials, reduces cost, equally can reach the adiabatic effect of cold insulation.
On the basis of a upper embodiment, between foamed polyurethane layer and housing 1 inwall, it is filled with expanded pearlite rock stratum.
The effect of cold insulation can either preferably be reached, also reduce the intake of nitrogen, reduce cost.
In another kind of optional embodiment, described foamed polyurethane layer is arranged at described housing 1 inner surface, and described
Between the thickness of foamed polyurethane layer is less than between described housing 1 inwall and described heat exchanger 2 outer wall and described pipeline 3 outer wall
Gap width.
By being arranged at mould in housing 1, by way of injection, polyurathamc is injected into mould and housing 1
Between space in, after the completion of injection, mould is removed, forms foamed polyurethane layer, foamed polyurethane layer and heat exchanger 2 and
Form vacuum interlayer between pipeline 3 outer wall, be isolated from the outside well, prevent the heat exchangers 2 such as moisture in outside air with
And pipeline 3 is corroded, cold insulation effect, reduces cost are simultaneously worked as.
On the basis of a upper embodiment, described foamed polyurethane layer and described heat exchanger 2 and described pipeline 3 outer
It is filled with described expanded pearlite rock stratum between wall.The effect of cold insulation can either preferably be reached, also reduce being passed through of nitrogen
Amount, reduces cost.
Optionally, in above-mentioned natural gas liquefaction ice chest, described housing 1 is Cylinder Shell 1.Certainly, housing 1 is acceptable
For other shapes, such as cuboid, square etc., all within protection domain.
The utility model additionally provides a kind of natural gas liquefaction system and includes the natural gas liquefaction as described in any of the above-described
Ice chest.Natural gas liquefaction device include at least one natural gas liquefaction ice chest, pre-cooling cycle mechanism, liquefaction deep cooling cycling mechanism and
Natural gas liquefaction mechanism, is provided with precooling plate-fin heat exchanger and deep cooling plate-fin heat exchanger, described precooling in described liquefaction ice chest
Plate-fin heat exchanger and deep cooling plate-fin heat exchanger are to arrange up and down.The concrete composition part of natural gas liquefaction device and its company
The relation of connecing refer to prior art, will not be described here.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (8)
1. a kind of natural gas liquefaction ice chest, the heat exchanger including housing, being arranged at described enclosure interior and with described heat exchanger
The pipeline of connection is it is characterised in that be provided with foaming between described inner walls and described heat exchanger and described pipeline outer wall
Layer of polyurethane.
2. natural gas liquefaction ice chest as claimed in claim 1 it is characterised in that described foamed polyurethane layer be arranged at described in change
Hot device and the outer surface of described pipeline, and the thickness of described foamed polyurethane layer is equal to described inner walls and described heat exchanger
Gap width between outer wall and described pipeline outer wall.
3. natural gas liquefaction ice chest as claimed in claim 1 it is characterised in that described foamed polyurethane layer be arranged at described in change
Hot device and the outer surface of described pipeline, and the thickness of described foamed polyurethane layer is less than described inner walls and described heat exchanger
Gap width between outer wall and described pipeline outer wall.
4. natural gas liquefaction ice chest as claimed in claim 3 is it is characterised in that in described foamed polyurethane layer and described housing
It is filled with expanded pearlite rock stratum between wall.
5. natural gas liquefaction ice chest as claimed in claim 1 is it is characterised in that described foamed polyurethane layer is arranged at described shell
Internal surface, and the thickness of described foamed polyurethane layer is less than described inner walls and described heat exchanger outer wall and described pipeline
Gap width between outer wall.
6. natural gas liquefaction ice chest as claimed in claim 5 is it is characterised in that described foamed polyurethane layer and described heat exchanger
And it is filled with expanded pearlite rock stratum between the outer wall of described pipeline.
7. the natural gas liquefaction ice chest as described in any one of claim 1 to 6 is it is characterised in that described housing is cylindrical shell
Body.
8. a kind of natural gas liquefaction system is it is characterised in that the natural gas liquefaction including as described in any one of claim 1-7 is cold
Case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620523696.0U CN205980565U (en) | 2016-06-01 | 2016-06-01 | Natural gas liquefaction cold box and natural gas liquefaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620523696.0U CN205980565U (en) | 2016-06-01 | 2016-06-01 | Natural gas liquefaction cold box and natural gas liquefaction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205980565U true CN205980565U (en) | 2017-02-22 |
Family
ID=58020058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620523696.0U Expired - Fee Related CN205980565U (en) | 2016-06-01 | 2016-06-01 | Natural gas liquefaction cold box and natural gas liquefaction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205980565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893951A (en) * | 2022-05-10 | 2022-08-12 | 甘细理 | Liquefied natural gas cold box precooling equipment |
-
2016
- 2016-06-01 CN CN201620523696.0U patent/CN205980565U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893951A (en) * | 2022-05-10 | 2022-08-12 | 甘细理 | Liquefied natural gas cold box precooling equipment |
| CN114893951B (en) * | 2022-05-10 | 2023-10-27 | 重庆炘扬航能源有限公司 | Liquefied natural gas cold box precooling equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20210601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |