CN208859947U - A kind of LNG cold energy extraction direct refrigeration system - Google Patents
A kind of LNG cold energy extraction direct refrigeration system Download PDFInfo
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- CN208859947U CN208859947U CN201821646894.1U CN201821646894U CN208859947U CN 208859947 U CN208859947 U CN 208859947U CN 201821646894 U CN201821646894 U CN 201821646894U CN 208859947 U CN208859947 U CN 208859947U
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- lng
- low pressure
- cold energy
- pressure recycle
- recycle bucket
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Abstract
The utility model provides a kind of LNG cold energy extraction direct refrigeration system, and which solve the low technical problems of existing energy waste, system complex, refrigerating efficiency.It is equipped with low pressure recycle bucket, LNG system and cold energy use system, and Stainless Steel Coil is equipped with inside low pressure recycle bucket, and low pressure recycle bucket is equipped with the feed liquor and outlet tube connecting with LNG system, cold energy use system；LNG system is equipped with plate heat exchanger, LNG vaporization device and gas LNG delivery pipe, plate heat exchanger and LNG vaporization device and is connected by gas LNG delivery pipe；Cold energy use system is equipped with fluorine pump, plate heat exchanger, freezer, and fluorine pump, plate heat exchanger and freezer are connected in series by R22 liquid supply pipe, and freezer is connect by R22 return pipe with low pressure recycle bucket R22 reflux import.Tthe utility model system is simple, easy to operate, realizes and effectively utilizes to LNG cold energy, energy saving, increases economic efficiency.
Description
Technical field
The utility model relates to LNG cold energy use technical fields, and in particular to a kind of LNG cold energy extracts directly refrigeration and is
System.
Background technique
Liquefied natural gas abbreviation LNG is natural gas by dehydration desulfurization process, by made of low temperature process cryogenic liquefaction
- 163 DEG C of liquid mixtures of low temperature.The power consumption of one ton of LNG of every production is about 850kWh, and in LNG receiving station, generally need again
LNG is gasified by vaporizer and is used, gasification releases very big cooling capacity, and value is about 837kJ/kg.This part of cooling capacity is logical
Chang Wufa is directly used, and is rejected in vaporizer with seawater or air, and the waste of the energy is caused.
Traditional freezer generallys use the low temperature that Cempression engine refrigerating apparatus maintains freezer, and electric quantity consumption is larger, and cost is relatively high,
System is more complex.
Utility model content
The technical issues of the utility model is aiming at prior art energy waste, refrigeration system complexity, higher cost, mentions
LNG cold energy simple for a kind of system, easy to operate extracts direct refrigeration system.
In order to solve the above technical problems, the utility model is equipped with low pressure recycle bucket, LNG system and cold energy use system thus
System, low pressure recycle bucket inside are equipped with Stainless Steel Coil, and low pressure recycle bucket is equipped with and connect with LNG system, cold energy use system
Feed liquor and outlet tube；LNG system is equipped with plate heat exchanger, LNG vaporization device and gas LNG delivery pipe, plate heat exchanger and LNG vapour
Change device to be connected by gas LNG delivery pipe；Cold energy use system is equipped with fluorine pump, plate heat exchanger, freezer, and fluorine is pumped, board-like changed
Hot device and freezer are connected in series by R22 liquid supply pipe, and freezer is connected by R22 return line and low pressure recycle bucket R22 reflux import
It connects.
Preferably, low pressure recycle bucket top is successively arranged level instrumentation nozzle, R22 reflux import, relief valve port, pressure gauge
Mouthful, the lower right side of low pressure recycle bucket is equipped with liquid LNG inlet tube, and low pressure recycle bucket lower part is equipped with R22 outlet tube, and R22 goes out liquid
Pipe is pumped with fluorine and is connect by R22 liquid supply pipe.
Preferably, low pressure recycle bucket top is additionally provided with the R22 inlet and outlet being connected with compressor set.
Preferably, Stainless Steel Coil is set to the middle and lower part of low pressure recycle bucket.
The utility model directly uses the cooling capacity of LNG as freezer cold source, and system is simple, realizes to the effective of LNG cold energy
It utilizes, avoids the waste of resource；Simplify operating system, reduces freezer operation maintenance cost, have wide range of applications, can be applied to
The refrigeration system of different type freezer.
Detailed description of the invention
Fig. 1 is the utility model principle schematic diagram.
Sign flag illustrates in figure:
1 is low pressure recycle bucket；1.1 be Stainless Steel Coil；1.2 be liquid LNG inlet tube；1.3 be R22 outlet tube；1.4 being
R22 liquid outlet；1.5 be level instrumentation nozzle；1.6 be R22 reflux import；1.7 be relief valve port；1.8 be gauge port；1.9 being
Support frame；1.10 be R22 import；1.11 be the outlet R22；2 be fluorine pump；3 be plate heat exchanger；4 be LNG vaporization device；5 be library
Room；6 be R22 liquid supply pipe a；7 be R22 liquid supply pipe b；8 be gas LNG delivery pipe；9 be R22 return pipe.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawings.
As shown in Figure 1, the utility model provides a kind of LNG cold energy extraction direct refrigeration system, it is equipped with low pressure recycle bucket
1, LNG system and cold energy use system.Stainless Steel Coil 1.1 is equipped with inside low pressure recycle bucket 1, Stainless Steel Coil 1.1 is located at low
Press 1 middle and lower part of circulation barrel；1 lower right side of low pressure recycle bucket is equipped with liquid LNG inlet tube 1.2；1 lower part of low pressure recycle bucket is equipped with
R22 outlet tube 1.3,1.3 bottom of R22 outlet tube are equipped with R22 liquid outlet 1.4；1 top of low pressure recycle bucket is successively arranged from left to right
Level instrumentation nozzle 1.5, R22 reflux import 1.6, relief valve port 1.7, gauge port 1.8, R22 import 1.10 and the outlet R22
1.11；1.1 outlet end of Stainless Steel Coil is located at 1 left side central portion of low pressure recycle bucket, and is connected with gas LNG delivery pipe 8；Low pressure
1 bottom both ends of circulation barrel are equipped with support frame 1.9, are used to support fixed low pressure recycle bucket 1.
LNG system is equipped with plate heat exchanger 3, LNG vaporization device 4 and LNG delivery pipe 8,3 lower right side import of plate heat exchanger
End is connected by gas LNG delivery pipe 8 with 1.1 outlet end of Stainless Steel Coil, and 3 right upper portion outlet end of plate heat exchanger passes through gas
Body LNG delivery pipe 8 is connect with LNG vaporization device.Cold energy use system is equipped with fluorine pump 2, plate heat exchanger 3 and freezer 5, and fluorine pumps 2, plate
Formula heat exchanger 3 and freezer 5 are connected in series by R22 liquid supply pipe；Fluorine pumps 2 input ends and passes through R22 liquid supply pipe a6 and R22 outlet tube
The R22 liquid outlet 1.4 of 1.3 bottoms connects, and fluorine pumps 2 outlet ends and passes through R22 liquid supply pipe b7 and 3 left lower import of plate heat exchanger
End connection；3 left upper portion outlet end of plate heat exchanger is connected by R22 liquid supply pipe b7 with freezer 5, and freezer 5 passes through R22 return pipe
9 are connected with the R22 on 1 top of low pressure recycle bucket reflux import.
Enter in Stainless Steel Coil 1.1 when -163 DEG C of liquid LNG pass through liquid LNG inlet tube 1.2, liquid LNG and refrigerating
Agent R22 carries out heat exchange in Stainless Steel Coil 1.1, and liquid LNG absorbs heat and is gasificated into gaseous state, and R22 is in heat exchanger
Heat is released, liquid is condensed by gas, is cooled down in low pressure recycle bucket to R22 level-one at this time.Then 2 are pumped in gravity and fluorine
Under effect, liquid R22 in low pressure recycle bucket 1 by R22 outlet tube 1.3, by R22 liquid supply pipe a6 and R22 liquid supply pipe b7 into
Enter into plate heat exchanger 3；Gaseous state LNG is entered in plate heat exchanger 3 by gas LNG delivery pipe 8.By plate heat exchanger
The R22 of 3 reducing temperature twices enters storehouse by R22 liquid supply pipe b7, carries out cooling refrigeration to storehouse 5；And it is remaining in plate heat exchanger 3
LNG enter in LNG vaporization device 4 by gas LNG delivery pipe 8, be gasificated into 10 DEG C of gases.It is overheated in storehouse 5
Liquids and gases R22 flow back into low pressure recycle bucket 1 by R22 return pipe 9, is again introduced into through the cooling condensation of Stainless Steel Coil 1.1
Storehouse 5 constantly recycles, to achieve the purpose that give storehouse 5 continuous cooling refrigeration.
Circulation temperature lowering mode and interruption cooling method can be used in storehouse 5, and when storehouse 5 does not need cooling, LNG can give low
R22 cooling in circulation barrel 1 is pressed, is pre-chilled in advance, achievees the purpose that cold-storage.When freezer 5 needs to cool down, directly unlatching fluorine pumps 2, takes out
R22 gas in low pressure recycle bucket 1 is taken, is at this time exactly a normal freon barrel pump liquid-supplying system, carries out circulation temperature lowering, freely
Conversion operates extremely simple.
This system can be used in mixed way with LNG and compressor, to provide higher cold energy；LNG refrigeration can be applied alone to reach cold
Energy-efficient purpose can be recycled；Compressor refrigeration can also be applied alone, low pressure recycle bucket top is equipped with the R22 being connected with compressor set
Import 1.10 and the outlet R22 1.11, system is exactly a normal compressor refrigeration system at this time.The control of this system uses PLC
Touch screen control, intuitive display is easy to operate, flexible, realizes full-automatic centralized control operation.
Only as described above, only specific embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, therefore the displacement of its equivalent assemblies, or according to equivalent changes and modifications made by the utility model patent protection scope,
It should still belong to the scope that the utility model claims book is covered.
Claims (4)
1. a kind of LNG cold energy extracts direct refrigeration system, it is equipped with low pressure recycle bucket, LNG system and cold energy use system, it is special
Sign is inside the low pressure recycle bucket that the low pressure recycle bucket is equipped with and LNG system, cold energy use equipped with Stainless Steel Coil
The feed liquor and outlet tube of system connection；The LNG system is equipped with plate heat exchanger, LNG vaporization device and gas LNG delivery pipe, institute
Plate heat exchanger and LNG vaporization device is stated to be connected by gas LNG delivery pipe；The cold energy use system is equipped with fluorine and pumps, is board-like
Heat exchanger, freezer, the fluorine pump, plate heat exchanger and freezer are connected in series by R22 liquid supply pipe, and the freezer is returned by R22
Flow tube is connect with low pressure recycle bucket R22 reflux import.
2. a kind of LNG cold energy according to claim 1 extracts direct refrigeration system, it is characterised in that the low pressure recycle bucket
Top is equipped with level instrumentation nozzle, R22 flows back import, relief valve port, gauge port, the lower right side of the low pressure recycle bucket are equipped with
Liquid LNG inlet tube, low pressure recycle bucket lower part are equipped with R22 outlet tube, and the R22 outlet tube and fluorine pump pass through R22 feed flow
Pipe connection.
3. a kind of LNG cold energy according to claim 2 extracts direct refrigeration system, it is characterised in that the Stainless Steel Coil
Set on the middle and lower part of low pressure recycle bucket.
4. a kind of LNG cold energy according to claim 3 extracts direct refrigeration system, it is characterised in that the low pressure recycle bucket
Top is additionally provided with the R22 inlet and outlet being connected with compressor set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821646894.1U CN208859947U (en) | 2018-10-10 | 2018-10-10 | A kind of LNG cold energy extraction direct refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821646894.1U CN208859947U (en) | 2018-10-10 | 2018-10-10 | A kind of LNG cold energy extraction direct refrigeration system |
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| Publication Number | Publication Date |
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| CN208859947U true CN208859947U (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821646894.1U Active CN208859947U (en) | 2018-10-10 | 2018-10-10 | A kind of LNG cold energy extraction direct refrigeration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033201A (en) * | 2020-08-24 | 2020-12-04 | 江西省天然气集团有限公司 | Liquefied natural gas cold energy recovery equipment |
| WO2021104469A1 (en) * | 2019-11-29 | 2021-06-03 | 南京扬子石油化工设计工程有限责任公司 | Low-temperature full containment tank having low-liquid-level material extraction device |
-
2018
- 2018-10-10 CN CN201821646894.1U patent/CN208859947U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104469A1 (en) * | 2019-11-29 | 2021-06-03 | 南京扬子石油化工设计工程有限责任公司 | Low-temperature full containment tank having low-liquid-level material extraction device |
| CN112033201A (en) * | 2020-08-24 | 2020-12-04 | 江西省天然气集团有限公司 | Liquefied natural gas cold energy recovery equipment |
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