CN206352727U - A kind of novel B OG reliquefaction installations - Google Patents
A kind of novel B OG reliquefaction installations Download PDFInfo
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- CN206352727U CN206352727U CN201621495203.3U CN201621495203U CN206352727U CN 206352727 U CN206352727 U CN 206352727U CN 201621495203 U CN201621495203 U CN 201621495203U CN 206352727 U CN206352727 U CN 206352727U
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Abstract
The utility model discloses a kind of novel B OG reliquefaction installations, it is characterised in that including：LNG storage tank, heat exchanger, hot sound refrigerating machine, pump, liquid nitrogen storage tank；Heat exchanger is provided with BOG entrances, BOG outlets, the outlet of liquid nitrogen entrance, liquid nitrogen；Wherein the gas phase end of LNG storage tank is connected by the BOG entrances of pipeline and heat exchanger, the BOG outlets of heat exchanger are connected by the liquid phase end of pipeline and LNG storage tank, the liquid nitrogen entrance of heat exchanger is connected by the port of export of pipeline and pump, and the liquid nitrogen outlet of heat exchanger is connected by the entrance of pipeline and hot sound refrigerating machine；The entrance of liquid nitrogen storage tank is connected by the outlet of pipeline and hot sound refrigerating machine and the entrance of pump respectively, and the outlet of hot sound refrigerating machine and the entrance of pump are connected by pipeline.The utility model is not only reasonable in design, and liquid nitrogen can be recycled, and reduces the re-liquefied operation costs of BOG, and uses thermoacoustic refrigerator, reduces occupation area of equipment.
Description
Technical field
The utility model is related to a kind of sustainable technical field re-liquefied to BOG progress in storage tank, is in particular
It is related to a kind of novel B OG reliquefaction installations.
Background technology
At this stage, LNG especially achieves significant progress in field of traffic in automobile-used and peculiar to vessel development, same with this
When along with substantial amounts of LNG gas stations, LNG powered ships and the double dynamical ships of fuel oil-LNG it is newly-built, put into operation.Because of storage tank
Cryo Heat Insulation characteristic, LNG carries out heat exchange with the external world during the links such as storage, transport, inevitably and is commonly called as Lou heat,
Cause the LNG of tank inside because heating up and gasifying the boil-off gas referred to as BOG formed.BOG can gradually increase storage tank after being formed
The pressure of interior gas, can wash tank safety valve open when gas pressure runs up to a timing, the natural gas discharge of excess pressure is arrived
In air, in the hope of alleviating tank internal pressure, it is to avoid blast dangerous situation.A large amount of diffusing for BOG natural gases not only cause huge warp
Ji loss, yet forms both the greenhouse effects of more than 20 times of carbon dioxide, causes environmentally friendly harm.In order to avoid diffusing bring negative
Face rings, therefore develops the re-liquefied techniques of this novel B OG, realizes LNG storages, transport without diffusing, industry is significant.At present,
The re-liquefied technologies of BOG mainly have it is several under it is several：
(1) compression-expansion is freezed
The technology utilization cryogenic compressor is compressed rear throttling expansion to BOG to realize that BOG is re-liquefied, this kind of technique
Complex, occupation area of equipment is big, invests higher, noise is big, requires high to the transformation of existing gas station.
(2) condense again
The technique is directly by the use of liquid nitrogen as low-temperature receiver, and liquid nitrogen is exchanged heat with BOG by heat exchanger, and providing cold to BOG realizes
BOG is re-liquefied, and the technique is simple, but needs to store, consumes a large amount of liquid nitrogen, and cost is higher.
Therefore, occupation area of equipment can be reduced by how providing one kind, reduced the new BOG reliquefaction installations of cost and be
The problem of those skilled in the art's urgent need to resolve.
Utility model content
In view of this, the utility model provides a kind of novel B OG reliquefaction installations, not only reasonable in design, and liquid nitrogen can be with
Recycle, reduce the re-liquefied operation costs of BOG, and use thermoacoustic refrigerator, reduce occupation area of equipment, together
When enhance the practicality of equipment.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of novel B OG reliquefaction installations, including：LNG storage tank, heat exchanger, hot sound refrigerating machine, pump, liquid nitrogen storage tank；It is described
Heat exchanger is provided with BOG entrances, BOG outlets, the outlet of liquid nitrogen entrance, liquid nitrogen；The gas phase end of wherein described LNG storage tank passes through pipeline
It is connected with the BOG entrances of the heat exchanger, the BOG outlets of the heat exchanger are connected by pipeline and the liquid phase end of the LNG storage tank
Connect, the liquid nitrogen entrance of the heat exchanger is connected by pipeline with the port of export of the pump, the liquid nitrogen outlet of the heat exchanger passes through
Pipeline is connected with the entrance of the hot sound refrigerating machine；The entrance of the liquid nitrogen storage tank passes through pipeline and the hot sound refrigerating machine respectively
Outlet and the entrance of the pump connect, and the outlet of the hot sound refrigerating machine is connected with the entrance of the pump by pipeline.
It is preferred that, in a kind of above-mentioned novel B OG reliquefaction installations, at the LNG storage tank gas phase end and the heat exchanger
Valve one is provided with the pipeline of BOG entrances connection.
It is preferred that, in a kind of above-mentioned novel B OG reliquefaction installations, the heat exchanger BOG outlets and the LNG storage tank liquid
Valve two is provided with the pipeline of phase end connection.
It is preferred that, in a kind of above-mentioned novel B OG reliquefaction installations, the liquid nitrogen storage tank entrance is connected with the pump intake
Pipeline on be disposed with valve four and valve five.
It is preferred that, in a kind of above-mentioned novel B OG reliquefaction installations, the hot sound refrigerating machine outlet and the liquid nitrogen storage tank
Valve three is provided with the pipeline of entrance connection.
It is preferred that, in a kind of above-mentioned novel B OG reliquefaction installations, the outside of the hot sound refrigerating machine is liquefaction Dewar,
And nitrogen inlet pipe and liquid nitrogen reflux pipe are additionally provided with outside hot sound refrigerating machine, is set in the inner cavity top of the hot sound refrigerating machine
It is equipped with refrigeration machine head.
Understand that compared with prior art, the utility model is disclosed there is provided a kind of novel B OG via above-mentioned technical scheme
Reliquefaction installation, the uncertainty and yield of the BOG times produced primarily directed to LNG storage tank is uncertain, and BOG is reclaimed
A kind of novel B OG reliquefaction installations that the problems such as device installing space is small provides, this device mainly by LNG storage tank, valve,
Heat exchanger, hot sound refrigerating machine, liquid nitrogen storage tank and pump are constituted.
When BOG yields are smaller in LNG storage tank, opening valve one, valve two, valve five, startup hot sound refrigerating machine,
Pump, by hot sound refrigerating machine, into device pipeline, liquid nitrogen provides cold, then is exchanged heat by liquid nitrogen in heat exchanger with BOG, reality
Existing BOG is re-liquefied.
When BOG yields are larger in LNG storage tank, valve one, valve two, valve three, valve four, valve five are opened, is opened
Dynamic hot sound refrigerating machine, pump, by discharging the internal circulating load of liquid nitrogen in the liquid nitrogen in liquid nitrogen storage tank, increase device, hot sound refrigerating machine with
Liquid nitrogen storage tank provides cold jointly, then has liquid nitrogen to be exchanged heat with BOG in heat exchanger, realizes that BOG is re-liquefied.
When needing re-liquefied without BOG in LNG storage tank, valve one, valve two are closed, valve three, valve four, valve is opened
Five, start hot sound refrigerating machine, pump, by the liquefaction of nitrogen in device pipeline, and be stored in liquid nitrogen storage tank, in case regulation BOG
Re-liquefied speed.
The utility model is on the one hand reasonable in design, and liquid nitrogen is recycled, and reduces the re-liquefied operation costs of BOG；Using new
Hot sound refrigerating machine, reduces occupation area of equipment, enhances the practicality of the device；On the other hand using pump control flow and
Re-liquefied amount, has more high control precision compared to control refrigeration machine cooling measurer；Uninterruptedly freezed using hot sound refrigerating machine simultaneously, profit
Cold is accumulated with liquid nitrogen storage tank, thermoacoustic refrigeration acc power is reduced, reduces the cost of device.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is 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 of offer.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is hot sound refrigerating machine structural representation of the present utility model.
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 describe, 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 creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
The utility model embodiment discloses a kind of novel B OG reliquefaction installations, and BOG is produced primarily directed to LNG storage tanks
Time uncertainty and yield are uncertain, the BOG reliquefaction installations that the problems such as BOG retracting devices install small is developed.
The present apparatus be mainly by LNG storage tank, valve, heat exchanger, hot sound refrigerating machine, liquid nitrogen storage tank, pump group into.
A kind of novel B OG reliquefaction installations that relevant drawings provide for the utility model are referred to, including：LNG storage tank 1,
Heat exchanger 3, hot sound refrigerating machine 5, pump 10, liquid nitrogen storage tank 7；Heat exchanger 3 is provided with BOG entrances, BOG outlets, liquid nitrogen entrance, liquid
Nitrogen is exported；Wherein the gas phase end of LNG storage tank 1 is connected by pipeline with the BOG entrances of heat exchanger 3, and the BOG outlets of heat exchanger 3 are logical
Cross pipeline to be connected with the liquid phase end of LNG storage tanks 1, the liquid nitrogen entrance of heat exchanger 3 is connected by pipeline with the port of export of pump 10, is changed
The liquid nitrogen outlet of hot device 3 is connected by pipeline with the entrance of hot sound refrigerating machine 5；The entrance of liquid nitrogen storage tank 7 respectively by pipeline with
The outlet of hot sound refrigerating machine 5 and the entrance connection of pump 10, and the outlet of hot sound refrigerating machine 5 passes through pipeline with the entrance of pump 10
Connection.
When BOG yields are smaller in LNG storage tank 1, valve 1, valve 24, valve 59 are opened, starts thermoacoustic refrigeration
Machine 5, pump 10, by hot sound refrigerating machine 5, into device pipeline, liquid nitrogen provides cold, then is carried out by liquid nitrogen and BOG in heat exchanger 3
Heat exchange, realizes that BOG is re-liquefied.
When BOG yields are larger in LNG storage tank 1, valve 1, valve 24, valve 36, valve 48, valve are opened
59, start hot sound refrigerating machine 5, pump 10, by discharging the internal circulating load of liquid nitrogen in the liquid nitrogen in liquid nitrogen storage tank 7, increase device, heat
Acoustic refrigerator 5 provides cold jointly with liquid nitrogen storage tank 7, then has liquid nitrogen to be exchanged heat with BOG in heat exchanger 3, realizes BOG liquid again
Change.
When needing re-liquefied without BOG in LNG storage tank 1, valve 1, valve 24 are closed, valve 36, valve four is opened
8th, valve 59, start hot sound refrigerating machine 5, pump 10, by the liquefaction of nitrogen in device pipeline, and are stored in liquid nitrogen storage tank 7,
In case the regulation re-liquefied speed of BOG.
The utility model is reasonable in design, and liquid nitrogen is recycled, and reduces the re-liquefied operation costs of BOG, and use Novel hot
Acoustic refrigerator, reduces occupation area of equipment, the practicality of intensifier；Flow and re-liquefied amount are controlled using pump, is compared
There is higher control accuracy with control refrigeration machine cooling measurer；Uninterruptedly freezed using hot sound refrigerating machine, while being stored up using liquid nitrogen
Tank accumulates cold, reduces refrigeration acc power, reduces the cost of device.
In order to further optimize above-mentioned technical proposal, the pipeline being connected at the gas phase end of LNG storage tank 1 with heat exchanger 3BOG entrances
On be provided with valve 1.
In order to further optimize on above-mentioned technical proposal, the pipeline that heat exchanger 3BOG outlets are connected with the liquid phase end of LNG storage tank 1
It is provided with valve 24.
Set successively on above-mentioned technical proposal, the pipeline that the entrance of liquid nitrogen storage tank 7 is connected with the entrance of pump 10 to further optimize
It is equipped with valve 48 and valve 59.
In order to further optimize above-mentioned technical proposal, hot sound refrigerating machine 5 is exported on the pipeline being connected with the entrance of liquid nitrogen storage tank 7
It is provided with valve 36.
In order to further optimize above-mentioned technical proposal, the outside of hot sound refrigerating machine 5 is liquefaction Dewar 13, and thermoacoustic refrigeration
Nitrogen inlet pipe 11 and liquid nitrogen reflux pipe 12 are additionally provided with outside machine 5, the inner cavity top of the hot sound refrigerating machine 5 is provided with system
Cold head 14.
The embodiment of each in this specification is described by the way of progressive, it is each implement that emphasis illustrates be and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.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 most wide scope consistent with features of novelty.
Claims (6)
1. a kind of novel B OG reliquefaction installations, it is characterised in that including：LNG storage tank (1), heat exchanger (3), hot sound refrigerating machine
(5), pump (10), liquid nitrogen storage tank (7)；The heat exchanger (3) is provided with BOG entrances, BOG outlets, the outlet of liquid nitrogen entrance, liquid nitrogen；
The gas phase end of wherein described LNG storage tank (1) is connected by pipeline with the BOG entrances of the heat exchanger (3), the heat exchanger (3)
BOG outlet be connected by pipeline with the liquid phase end of the LNG storage tank (1), the liquid nitrogen entrance of the heat exchanger (3) passes through pipeline
It is connected with the port of export of the pump (10), the liquid nitrogen outlet of the heat exchanger (3) passes through pipeline and the hot sound refrigerating machine (5)
Entrance is connected；The outlet respectively by pipeline and the hot sound refrigerating machine (5) of the entrance of the liquid nitrogen storage tank (7) and the pump
(10) entrance is connected, and the outlet of the hot sound refrigerating machine (5) is connected with the entrance of the pump (10) by pipeline.
2. a kind of novel B OG reliquefaction installations according to claim 1, it is characterised in that in the LNG storage tank (1) gas
Valve one (2) is provided with the pipeline of heat exchanger described in Xiang Duanyu (3) BOG entrances connection.
3. a kind of novel B OG reliquefaction installations according to claim 1, it is characterised in that heat exchanger (3) BOG goes out
Valve two (4) is provided with the pipeline that mouth is connected with the LNG storage tank (1) liquid phase end.
4. a kind of novel B OG reliquefaction installations according to claim 1, it is characterised in that liquid nitrogen storage tank (7) entrance
Valve four (8) and valve five (9) are disposed with the pipeline being connected with the pump (10) entrance.
5. a kind of novel B OG reliquefaction installations according to claim 1, it is characterised in that the hot sound refrigerating machine (5) goes out
Valve three (6) is provided with the pipeline that mouth is connected with the liquid nitrogen storage tank (7) entrance.
6. a kind of novel B OG reliquefaction installations according to claim 1, it is characterised in that the hot sound refrigerating machine (5)
Outside is to be additionally provided with nitrogen inlet pipe (11) and liquid nitrogen reflux pipe outside liquefaction Dewar (13), and hot sound refrigerating machine (5)
(12) inner cavity top of the hot sound refrigerating machine (5), is provided with refrigeration machine head (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495203.3U CN206352727U (en) | 2016-12-30 | 2016-12-30 | A kind of novel B OG reliquefaction installations |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495203.3U CN206352727U (en) | 2016-12-30 | 2016-12-30 | A kind of novel B OG reliquefaction installations |
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| CN206352727U true CN206352727U (en) | 2017-07-25 |
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| CN201621495203.3U Active CN206352727U (en) | 2016-12-30 | 2016-12-30 | A kind of novel B OG reliquefaction installations |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224082A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of simple and feasible cryogenic gas reliquefaction installation |
| CN110081303A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of liquefied gas storage device |
-
2016
- 2016-12-30 CN CN201621495203.3U patent/CN206352727U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224082A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of simple and feasible cryogenic gas reliquefaction installation |
| CN110081303A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of liquefied gas storage device |
| CN110081303B (en) * | 2019-05-17 | 2024-04-19 | 中国科学院理化技术研究所 | Liquefied gas storage device |
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