CN107543027A - A kind of small-sized LNG air supply systems - Google Patents
A kind of small-sized LNG air supply systems Download PDFInfo
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- CN107543027A CN107543027A CN201710637467.0A CN201710637467A CN107543027A CN 107543027 A CN107543027 A CN 107543027A CN 201710637467 A CN201710637467 A CN 201710637467A CN 107543027 A CN107543027 A CN 107543027A
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- tank body
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- air supply
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Abstract
The invention provides a kind of small-sized LNG air supply systems, the air supply system includes low-temperature storage tank and pipe-line system；Low-temperature storage tank is made up of interior outer tank body fit, and outer tank body bottom is slab construction, and inner tank body is fixed using bottom positioning component with the compound hoisting structure that top connector component forms.Pipe-line system includes gasification pipe, liquid level gauge pipeline, overflow passage, water influent pipeline, gas phase pipeline and from pressure piping；In addition to being exported from pressure piping, remaining pipeline passes in and out inner tank body from top connector component.This air supply system small volume, it is in light weight, realize cryogenic liquid LNG fill, overflow, from the highly integrated of supercharging, supply etc., overcome place, space limitation, lifting goes slick.
Description
Technical field
The invention belongs to liquefied natural gas LNG application fields, more particularly to a kind of liquefied natural gas minitype air-supply system.
Background technology
Natural gas is pollution-free after not only burning as a kind of clean energy resource, and cost is cheap, increasingly by society
Pay attention to, its application field gradually expands.Gaseous natural gas CNG uses pipeline transportation more, and liquified natural gas LNG uses storage pot type more
Transport.In order to meet the needs of LNG long distance transportations, LNG storage tank is mostly large-scale storage tank.
Used as China's expanding economy, the country greatly develop LNG in automobile, ship as power, or in industry
Upper to be used as the interim energy, large-scale LNG storage tank can not meet to be actually needed, in addition, being because place, space limit
Develop LNG total solution planning, on the products such as low temperature accumulating, gas station storage tank manufacture must also carry out it is supporting,
So the LNG storage tank of development of small-scale turns into inevitable.
The content of the invention
Present invention solves the technical problem that it is：A kind of small-sized LNG air supply systems are provided, met due to space, place limitation
Use, while can realize cryogenic liquid LNG fill, overflow, from supercharging, supply etc. it is highly integrated.
The present invention adopts the technical scheme that：
Small-sized LNG air supply systems include low-temperature storage tank and pipe-line system, and low-temperature storage tank is combined into by outer tank body and inner tank body set, outside
Tank base uses slab construction, substitutes the end socket and leg structure of traditional tank body, and the sealing vacuum vacuum of storage tank is less than
Equal to 0.05Pa；The heat insulation layer that the winding of inner canister external surface is made up of aluminium foil and low-temperature thermal insulation paper；Inner tank body is positioned using bottom
Component is fixed with the compound hoisting structure that top connector component forms；
Further, bottom positioning component includes bottom nozzle mounts, glass reinforced plastic sleeve and guide finger.Bottom nozzle mounts are welded on outer tank
Body bottom plate center, guide finger are welded on inner tank body low head center, and glass reinforced plastic sleeve positioning is inserted in bottom nozzle mounts, guide finger
Insert in glass reinforced plastic sleeve.So, inner tank body can be free to move axially, and meet the requirement of inner tank body shrinkage thermal expansion.
Further, top connector component includes adapter, flange, connector and reinforcing plate, and flange is welded in inner tank body
At the top of end socket, adapter one end is welded on flange, and the other end is welded to connect with connector, and connector is welded and fixed with reinforcing plate,
Reinforcing plate at the top of outer tank body upper cover with welding.
Pipe-line system includes gasification pipe, liquid level gauge pipeline, overflow passage, water influent pipeline, gas phase pipeline and from pressure inlet
Road；Drawn from pressure piping outlet from tank bottom；The outlet of gasification pipe, the inlet/outlet pipe of liquid level gauge pipeline, water influent pipeline
Feed tube, the outlet of gas phase pipeline, concentrate on top connector component from pressure piping inlet tube；Gas phase pipeline pushes up certainly
Portion's connector assembly connects overflow passage and gasification pipe after drawing.
Further, the feed tube of water influent pipeline is two, and one is top feed tube, and one is bottom liquid inlet pipe；Pushing up
The lower end of portion's feed tube sets shower, impact during avoiding feed liquor to inner storage tank.
Further, gasification pipe is provided with the guider of joint form in interior tank base.Gasification pipe is in interior outer tank
Rise between body in interlayer, storage tank is drawn from top connector component.
The technological progress that the present invention obtains is：
Low-temperature storage tank small volume, inner tank body can be fixed by way of hanging and lifting；The storage tank of small size overcomes place, space
Limitation, lifting go slick.
The application of top connector component, make pipeline more centralization, avoid cylinder, the perforate on end socket, reduce true
Empty leakage point.
The present invention realize cryogenic liquid LNG fill, overflow, from supercharging, supply etc. it is highly integrated, by from be pressurized,
Uninterrupted supply can be achieved.
The pipeline of outer tank body uses bend pipe structure in connection, and inner tank body bottom is provided with guider, it is ensured that inner canister
Body internal pipeline it is firm, attachment structure uses joint form, has taken into full account surplus of expanding with heat and contract with cold, reduce because of temperature change and
Caused stress concentration, pipeline tensile phenomenon.
Present invention accomplishes the supporting demand on the products such as natural gas in low temperature accumulating, gas station.
Brief description of the drawings
Fig. 1 is tank structure schematic diagram of the present invention；
Fig. 2 is pipe-line system structural representation of the present invention；
Fig. 3 is top connector component structure diagram；
Fig. 4 is bottom positioning component structural representation；
Wherein：1 outer tank body, 2 inner tank bodys, 3 showers, 4 vacuum orifices, 5 heat insulation layers, 6AG molecular sieve adsorptions device, 7 bottoms are determined
Hyte part, 8 top connector components, 9 guiders, 10 bottom plates, 11 gasification pipes, 12 liquid level gauge pipelines, 13 overflow passages, 14
Water influent pipeline, 15 gas phase pipelines, 16 from pressure piping, 17 vaporizers, 18 supply stop valves, 19 dropping valves, 20 decompression regulating valves,
21 supercharging inlet valves, 7-1 bottom nozzle mounts, 7-2 glass reinforced plastic sleeves, 7-3 guide fingers, 8-1 adapters, 8-2 flanges, 8-3 connections
Device, 8-4 reinforcing plates, 12-1 liquid level gauges, 12-2 pressure gauges, 14-1 tops feed tube, 14-2 bottom liquid inlet pipes.
Embodiment
Fig. 1 is a small-sized LNG air supply systems structural representation, including LNG low-temperature storage tanks and pipe-line system, the storage of LNG low temperature
Tank is vertical double cylinder high vacuum multiple layer heat insulation low temperature tank structures, is combined into for 2 sets with inner tank body by outer tank body 1.Outer tank body 1 is
Low alloy steel plate is made, and internal diameter is φ 1850mm, wall thickness 8mm, eliminates the bottom arc end socket of conventional pressure tank body, bottom plate
10 directly use slab construction, and the arc end socket for substituting traditional tank body adds leg structure, can directly seat is in ground, for small-sized
For tank body, the flexibility of equipment, easy to remove and installation are improved.Inner tank body 2 is made up of austenite stainless steel plate material, presses
GB24511 additional test Rp1.0 values, internal diameter are φ 1700mm, thickness of slab 6mm, geometric volume 5m3.Interior outer tank body interlayer is vacuum
Thermal insulating warm-keeping layer, the sealing vacuum of storage tank is≤0.05Pa.To ensure the low temperature of inner tank body, wound in the outer surface of inner tank body 2
The heat insulation layer 5 being made up of aluminium foil and low-temperature thermal insulation paper, aluminium foil and low-temperature thermal insulation paper winding are not less than 20 layers.
Be provided with a vacuum orifice 4 at the top of outer tank body 1, this mouth can be used to vacuumize use, can prevent again due to
Inner tank body 2 occur LNG leakage and 1 no safety relief device of outer tank body and cause LNG low-temperature storage tanks explode.
To ensure that storage tank has good heat-insulating property, AG molecular sieve cryogenic absorptions are set in the lower inner wall of outer tank body 1
Device 6.
Inner tank body 2 is fixed on outer tank using bottom positioning component 7 and compound hoisting structure made of top connector component 8
In body.As shown in figure 4, bottom positioning component 7 includes bottom nozzle mounts 7-1, glass reinforced plastic sleeve 7-2 and guide finger 7-3.Bottom is consolidated
Determine part 7-1 and be welded on the bottom plate center of outer tank body 1, guide finger 7-3 is welded on the low head center of inner tank body 2, and glass reinforced plastic sleeve 7-2 is inserted
Enter in bottom nozzle mounts 7-1, in guide finger 7-3 insertion glass reinforced plastic sleeves 7-2.So, the shrinkage heat of inner tank body has been taken into full account
It is swollen, it can be free to move axially, while glass reinforced plastic sleeve 7-2 substantially reduces the cold energy transmission of interior outer tank body.As shown in figure 3,
Top connector component 8 includes adapter 8-1, flange 8-2 and connector 8-3, and flange 8-2 is welded at the top of the upper cover of inner tank body 2,
Adapter 8-1 is welded on flange 8-2, is then welded to connect with connector 8-3, and connector 8-3 and reinforcing plate 8-4 is welded, and is strengthened
Plate 8-4 is welded and fixed with outer tank body 1, and the perforate to outer tank body 1 plays strengthening action, and so, inner tank body 2 and the welding of outer tank body 1 are solid
It is fixed.Compound hoisting structure ensures Stability Analysis of Structures between storage tank inner tank body and outer tank body, has prevented inner tank body and has filled liquefaction naturally
The phenomenon of support, while the application of top connector component 8 are broken after gas because of shrinkage, makes pipeline more centralization, avoids
Perforate on the cylinder of outer tank body and inner tank body, end socket, being advantageous to interior outer tank body interlayer reduces vaccum leakage rate, keeps vacuum
Degree, improve the overall security of LNG low-temperature storage tanks.
In summary, LNG low-temperature storage tanks small volume, in light weight, inner tank body 2 instead of in the past using outstanding lift-on/lift-off type structure
The combining structure of combination is hung in 8 points of supports that large-scale low-temperature tank body uses with supporting leg support combinations structure or with drawing, and avoids outer tank
Body perforate installation support, reduces leak source, ensure that vacuum.
As shown in Fig. 2 the pipe-line system of this air supply system mainly has gasification pipe 11, liquid level gauge pipeline 12, overflow passage
13rd, water influent pipeline 14, gas phase pipeline 15 and from pressure piping 16 etc., except from pressure piping outlet in addition to storage tank bottom, remaining pipe
Road is arranged in top connector component 8, realize cryogenic liquid LNG fill, overflow, from supercharging, supply etc. height collection
Into.Pipe-line system uses bend pipe structure in tank body, to prevent shrinkage thermal expansion from producing stress concentration.For ease of managing and operating,
Various valves, instrument and the safety attachment of pipe-line system are surrounded on the tank body outer surface of basin respectively.
Water influent pipeline 14 is the pipeline that LNG low-temperature storage tanks fill LNG, is divided into two pipes, from top connector component 8
Feed tube enters inner tank body, is divided into two-way in inner tank body.As shown in figure 3, top feed tube 14-1 is filled at the top of inner tank body
LNG, bottom liquid inlet pipe 14-2 fill LNG along interior outer tank body interlayer from top connector component 8 from inner tank body bottom.For top
Feed tube 14-1, during to prevent tank top feed liquor, direct current and under the internal tank base of liquid produce very strong impulsive force, it is long
Time is caused to damage to tank body, and shower 3 is provided with top feed tube 14-1 lower ends.
The inlet/outlet pipe of liquid level gauge pipeline 12 is arranged in top connector component 8, and the pipeline includes liquid level gauge 12-1, pressure
Table 12-2 etc. is indicated, to understand the situation of LNG in inner tank body.
Gasification pipe 11 is that liquified natural gas LNG is converted into gaseous natural gas CNG, there is provided the pipeline used to user.
Gasification pipe 11 is provided with the guider 9 of joint form in the bottom of inner tank body 2, and this structure can ensure interior pipe-line system
It is firm, it is also considered that surplus of expanding with heat and contract with cold, reduce because of temperature change and caused by stress concentration, prevent pipeline from breaking.Vapor lamp
Road 11 is drawn from the bottom of inner tank body 2, and stop valve is set in pipeline, is connected vaporizer 17 afterwards, is connected by supplying stop valve 18
Air feed interface.
Gas phase pipeline 15 is drawn from top connector component 8, and bottom is divided into two passages, and a passage connects gasification pipe
11, a passage connects overflow passage 13.When pressure inside the tank, which exceedes dropping valve 19, sets pressure, decompression regulating valve 21 is opened can
Gas in tank is led into gasification pipe 11 by gas phase pipeline 15, supplying user by vaporizer 17 and air feed interface uses, when
When pressure inside the tank is down to below the setting pressure of dropping valve 19, decompression regulating valve 20 is closed.When filling LNG in tank, in inner tank body
Amounts of pressurized gaseous increase, gaseous natural gas ensures being smoothed out for filling process by the overflow of overflow passage 13, to ensure to pacify
Entirely, 13 all floss holes of overflow passage use centralized recovery formula pipeline, install spark arrester.
Drawn from pressure piping 16 from LNG storage tank bottom, after liquified natural gas is converted into gaseous state supercharging, through being pressurized import
Valve 21 is input to inner tank body from LNG storage tank top connector component 8 again, maintains certain work pressure in the inner tank body course of work
Power, ensure the stabilization that liquified natural gas outwards exports.
The system is minitype air-supply system, and vacuum extractor and survey vacuum plant are uniformly arranged in tank top, to grasp
Make and detect.
The inner tank body small volume of this air supply system, it is in light weight, it can be fixed by way of suspension, realize cryogenic liquid
LNG is filled, overflow, from supercharging, supply etc. it is highly integrated；The storage tank of small size overcomes place, space limitation, lifting operating
Flexibly；The supporting demand on the products such as low temperature accumulating, gas station is met simultaneously.
Claims (6)
1. a kind of small-sized LNG air supply systems, including low-temperature storage tank and pipe-line system, low-temperature storage tank is by outer tank body（1）With inner tank body
（2）Set is combined into, it is characterised in that：The outer tank body（1）Bottom uses slab construction, and it is true that top is provided with taking out of diffusing safely
Eat dishes without rice or wine（4）；The inner tank body（2）Using bottom positioning component（7）With top connector component（8）The compound hoisting structure of composition
It is fixed.
2. LNG air supply systems according to claim 1, it is characterised in that：The bottom positioning component（7）Consolidate including bottom
Determine part（7-1）, glass reinforced plastic sleeve（7-2）And guide finger（7-3）, the bottom nozzle mounts（7-1）It is welded on outer tank body（1）Bottom plate
Center, the guide finger（7-3）It is welded on inner tank body（2）Low head center, the glass reinforced plastic sleeve（7-2）Positioning insertion bottom
Fixture（7-1）In, the guide finger（7-3）Insert glass reinforced plastic sleeve（7-2）In.
3. LNG air supply systems according to claim 1, it is characterised in that：The top connector component（8）Including adapter
（8-1）, flange（8-2）, connector（8-3）And reinforcing plate（8-4）, the flange（8-2）It is welded on inner tank body（2）Upper cover top
Portion, the adapter（8-1）One end is welded on flange（8-2）On, the other end and connector（8-3）It is welded to connect, the connector
（8-3）With reinforcing plate（8-4）It is welded and fixed；The reinforcing plate（8-4）With outer tank body（1）Welded at the top of upper cover.
4. LNG air supply systems according to claim 1, it is characterised in that：The pipe-line system includes gasification pipe（11）、
Liquid level gauge pipeline（12）, overflow passage（13）, water influent pipeline（14）, gas phase pipeline（15）With from pressure piping（16）；It is described from
Pressure piping（16）Outlet is drawn from tank bottom；Gasification pipe（11）Outlet, liquid level gauge pipeline（12）Inlet/outlet pipe, enter
Liquid pipeline（14）Feed tube, gas phase pipeline（15）Outlet, from pressure piping（16）Inlet tube concentrates on top connector
Component（8）On；The gas phase pipeline（15）From top connector component（8）Overflow passage is connected after extraction（13）And gasification pipe
（11）.
5. LNG air supply systems according to claim 4, it is characterised in that：The water influent pipeline（14）Feed tube is two,
One is top feed tube, and one is bottom liquid inlet pipe；The lower end of the top feed tube sets shower（3）.
6. LNG air supply systems according to claim 4, it is characterised in that：The gasification pipe（11）In inner tank body（2）Bottom
Portion is provided with the guider of joint form（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637467.0A CN107543027A (en) | 2017-07-31 | 2017-07-31 | A kind of small-sized LNG air supply systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637467.0A CN107543027A (en) | 2017-07-31 | 2017-07-31 | A kind of small-sized LNG air supply systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107543027A true CN107543027A (en) | 2018-01-05 |
Family
ID=60970850
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710637467.0A Pending CN107543027A (en) | 2017-07-31 | 2017-07-31 | A kind of small-sized LNG air supply systems |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087718A (en) * | 2018-01-12 | 2018-05-29 | 江苏深绿新能源科技有限公司 | A kind of vertical lossless charging device of bottle heavy caliber |
| CN108332044A (en) * | 2018-01-12 | 2018-07-27 | 江苏深绿新能源科技有限公司 | A kind of vertical low temperature basin Anti-overflow device |
| CN108488619A (en) * | 2018-05-04 | 2018-09-04 | 湖州宏明低温设备有限公司 | A kind of horizontal low temperature storage tank |
| CN112393109A (en) * | 2020-12-04 | 2021-02-23 | 连云港中远海运特种装备制造有限公司 | Low-temperature heat-insulating container with anti-eccentricity mechanism |
| CN113335767A (en) * | 2020-02-18 | 2021-09-03 | 中国科学院物理研究所 | Low-temperature container |
| CN114636094A (en) * | 2020-12-15 | 2022-06-17 | 中国石油化工股份有限公司 | Earthing formula low temperature liquid hydrocarbon storage system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087718A (en) * | 2018-01-12 | 2018-05-29 | 江苏深绿新能源科技有限公司 | A kind of vertical lossless charging device of bottle heavy caliber |
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| CN108488619A (en) * | 2018-05-04 | 2018-09-04 | 湖州宏明低温设备有限公司 | A kind of horizontal low temperature storage tank |
| CN113335767A (en) * | 2020-02-18 | 2021-09-03 | 中国科学院物理研究所 | Low-temperature container |
| CN112393109A (en) * | 2020-12-04 | 2021-02-23 | 连云港中远海运特种装备制造有限公司 | Low-temperature heat-insulating container with anti-eccentricity mechanism |
| CN112393109B (en) * | 2020-12-04 | 2021-12-17 | 连云港中远海运特种装备制造有限公司 | Low-temperature heat-insulating container with anti-eccentricity mechanism |
| CN114636094A (en) * | 2020-12-15 | 2022-06-17 | 中国石油化工股份有限公司 | Earthing formula low temperature liquid hydrocarbon storage system |
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Application publication date: 20180105 |