CN203718375U - LNG (liquefied natural gas) air bathing gasifier - Google Patents
LNG (liquefied natural gas) air bathing gasifier Download PDFInfo
- Publication number
- CN203718375U CN203718375U CN201420087449.1U CN201420087449U CN203718375U CN 203718375 U CN203718375 U CN 203718375U CN 201420087449 U CN201420087449 U CN 201420087449U CN 203718375 U CN203718375 U CN 203718375U
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- China
- Prior art keywords
- pipe
- lng
- frost prevention
- gasifying
- vaporizer
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Abstract
The utility model discloses an LNG (liquefied natural gas) air bathing gasifier, which can effectively prevent frosting at the opening of a gas inlet pipeline. The gasifier comprises a plurality of gasifying pipes connected in series, wherein gas inlets of the gasifying pipes are in series connection with a frost prevention pipe communicated with an LNG liquid inlet pipe, gasifying pipe bodies and a frost prevention pipe body are in parallel, the frost prevention pipe comprises an outer pipe and an inner pipe sheathed with the outer pipe, an LNG liquid inlet is arranged at one end of the inner pipe, a semispherical pipe cap is arranged at one end, far from the liquid inlet, of the outer pipe, and a sealing plate is arranged between the outer pipe and the inner pipe and at the end of the liquid inlet and is provided with a liquid outlet.
Description
Technical field
The utility model relates to the empty vaporizer of bathing of a kind of LNG.
Background technique
The rock gas that the effect of LNG vaporizer is is gaseous state by the liquified natural gas endothermic gasification of-162 DEG C in LNG tank.At present, extensively adopt the empty vaporizer of bathing, adopt air as thermal source, in heat transfer process, vaporizer pipeline shell presents low-temp low-pressure around, and vaporizer outside presents High Temperature High Pressure, and air pressure difference forms natural convection, has realized the displacement of Cryogenic air.But in actual use,, in the time that ambient temperature is lower, gasifying pipe, at the frost that there will be of LNG influent stream mouth section, has reduced heat exchange efficiency.
In order to suppress frosting, prior art adopts external heat source is set, blower fan forces the methods such as displacement Cryogenic air to realize.Set up the peripheral unit such as water source, spray water system and collecting annulus as patent " LNG water spraying type vaporizer (CN202992637U) " adopts, vaporizer conduit enclosure is carried out to the operation of water spray and improve heat exchange efficiency.Patent " steam high-pressure blast spray forced heat-exchanging air-bathing gasifier (CN202836330U) " utilizes external heat source steam high-pressure blast to spray defrosting.It also comprises air channel and for extracting the blower fan of hot air, but owing to only simply blower fan being arranged in to vaporizer side, has destroyed the natural convection of vaporizer itself when forming forced convection, makes the convection effects that reaches same need to consume more energy.And for example described in patent " the empty vaporizer (CN202834734U) of bathing of blower fan forced heat-exchanging ", by having set up axial-flow blower, the airflow of utilizing axial-flow blower to produce alleviates the frosting problem of liquid oxygen district and Gas-liquid phase region, but this axial-flow blower has destroyed the natural convection of vaporizer itself equally.On the whole, the mode that prior art only improves heat exchange efficiency by entirety suppresses frosting, makes frost layer inhibition limited.
Model utility content
Technical problem to be solved in the utility model is: a kind of empty vaporizer of bathing of LNG that can effectively suppress suction tude road junction frost is provided.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: the empty vaporizer of bathing of a kind of LNG, comprise the some gasifying pipes that are cascaded, the suction port of described gasifying pipe is in series with the frost prevention pipe being connected with LNG liquid inlet pipe, gasifying pipe body and frost prevention pipe body be arranged in parallel, frost prevention pipe comprises the outer tube and the inner tube that are set-located, inner tube one end is provided with LNG liquid entering hole, on outer tube, be provided with hemisphere pipe cap away from one end of liquid entering hole, between outer tube and inner tube, be provided with shrouding in liquid entering hole one end, shrouding is provided with liquid outlet.
The further technical problem to be solved of the utility model is: provide between a kind of gasifying pipe and can form efficient natural convection to improve the empty vaporizer of bathing of LNG of gasification efficiency.
For solving the problems of the technologies described above, the technological scheme that the utility model is further adopted is: described gasifying pipe is involute shape and arranges around described frost prevention pipe.
The further technical problem to be solved of the utility model is: provide that a kind of gasification result is better, the empty vaporizer of bathing of the LNG of more compact structure.
For solving the problems of the technologies described above, the technological scheme that the utility model is further adopted is: also comprise the blower fan that is arranged on circumferential some in frost prevention pipe liquid entering hole place and blows to pipe cap direction on frost prevention pipe.
As the preferred scheme of one, described gasifying pipe outer wall is provided with heat-exchange fin, and heat-exchange fin is arranged on gasifying pipe outer wall in the shape of a spiral.
As the preferred scheme of one, described frost prevention pipe is connected with gasifying pipe by U-shaped connecting tube, between described gasifying pipe, is also connected by U-shaped connecting tube.
The beneficial effects of the utility model are: after LNG Liquefied natural gas discharges, flow into frost prevention pipeline, interlayer between outer tube and the inner tube of frost prevention pipe makes the outer tube of frost prevention pipeline can directly not meet with the cryogenic natural gas of influent stream mouth, this from isolated mode, effectively suppress the frost of ambient air on frost prevention conduit enclosure surface.
Because being involute shape, arranges around described frost prevention pipe gasifying pipe, make vaporizer form middle low-temp low-pressure, the pressure distribution of peripheral High Temperature High Pressure, generation external and internal pressure is poor, much bigger when this pressure difference arranges compared with gasifying pipe row shape, now peripheral air flows to central position, forms very strong natural convection, thereby make frost prevention pipe shell obtain more heat, also can suppress frost even if further make vaporizer use at a lower temperature.
Because frost prevention pipe liquid entering hole place is circumferentially with some the blower fans that blow to pipe cap direction on frost prevention pipe, because hot air is light compared with cool air, this setup can directly cause frost prevention pipe liquid entering hole by the relatively hot air of coming in from periphery, also can guarantee in the situation that outside air temperature is very low whether frost appears in frost prevention pipe liquid entering hole, and the forced convection that this setup forms does not destroy original natural convection shape, but cooperatively interact with original natural convection, can reduce like this energy of the required consumption of forced convection.
Because the shell of pipeline has adopted screw type heat-exchange fin, further accelerate the flowing velocity of air at conduit enclosure, thereby made vaporizer can replace in time Cryogenic air, thereby improved heat exchange efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the worm's eye view of Fig. 1 shown device.
Fig. 3 is the sectional view of described frost prevention pipeline.
In Fig. 1 to Fig. 3: 1-frost prevention pipeline, 101-outer tube, 102-liquid entering hole pipe joint, 103-liquid outlet pipe joint, 104-inner tube, 105-pipe cap, 106-shrouding, 2-gasifying pipe, 201-heat-exchange fin, 3-U shape connecting tube, 4-U shape connecting tube, 5-blower fan.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As Figure 1-3, the empty vaporizer of bathing of a kind of New forced ventilation type LNG, comprise the some gasifying pipes 2 that are cascaded by U-shaped connecting tube 3, the suction port of described gasifying pipe 2 is in series with the frost prevention pipe being connected with LNG liquid inlet pipe by U-shaped connecting tube 4, gasifying pipe 2 bodys and frost prevention pipe body be arranged in parallel.Frost prevention pipe comprises the outer tube 101 and the inner tube 104 that are set-located, inner tube 104 one end are provided with LNG liquid entering hole and liquid entering hole pipe joint 102, on outer tube 101, be provided with hemisphere pipe cap 105 away from one end of liquid entering hole, between outer tube 101 and inner tube 104, be provided with shrouding 106 in liquid entering hole one end, shrouding 106 is provided with liquid outlet and liquid outlet pipe joint 103.After discharging, LNG Liquefied natural gas flows into frost prevention pipeline 1, interlayer between inner tube 104 and outer tube 101 makes the outer tube 101 of frost prevention pipeline 1 can directly not meet with the cryogenic natural gas of influent stream mouth, this from isolated mode, effectively suppress the frost of ambient air on outer tube 101 surfaces of frost prevention pipeline 1.
Frost prevention pipeline 1 is arranged in to vaporizer pipeline group's central position, multiple gasifying pipes 2 are the involute shape of clockwise expansion and arrange around described frost prevention pipeline 1.In the present embodiment, adopted in the first layer peripheral disposition of frost prevention pipeline 18 gasifying pipes 2, second layer peripheral disposition 16 gasifying pipes 2.And four Fans 5 are arranged in around frost prevention pipeline 1 below equably.Because frost prevention pipeline 1 is arranged in the neutral position of vaporizer, low-temp low-pressure in the middle of forming, the pressure distribution of peripheral High Temperature High Pressure, produces external and internal pressure poor, and now peripheral air flows to central position, forms natural convection.Blower fan 5 is dried toward top from below, forms forced convection.In addition, gasifying pipe 2 outer walls are provided with spiral helicine heat-exchange fin 201, have further accelerated the flowing velocity of air at conduit enclosure.The combination of natural convection, forced convection and spiral heat-exchange fin 201, makes vaporizer can replace in time Cryogenic air, improves heat exchange efficiency.
The above embodiments are principle and effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. the empty vaporizer of bathing of LNG, comprise the some gasifying pipes that are cascaded, it is characterized in that: the suction port of described gasifying pipe is in series with the frost prevention pipe being connected with LNG liquid inlet pipe, gasifying pipe body and frost prevention pipe body be arranged in parallel, frost prevention pipe comprises the outer tube and the inner tube that are set-located, and inner tube one end is provided with LNG liquid entering hole, on outer tube, is provided with hemisphere pipe cap away from one end of liquid entering hole, between outer tube and inner tube, be provided with shrouding in liquid entering hole one end, shrouding is provided with liquid outlet.
2. the empty vaporizer of bathing of a kind of LNG as claimed in claim 1, is characterized in that: described gasifying pipe is involute shape and arranges around described frost prevention pipe.
3. the empty vaporizer of bathing of a kind of LNG as claimed in claim 2, is characterized in that: also comprise the blower fan that is arranged on circumferential some in frost prevention pipe liquid entering hole place and blows to pipe cap direction on frost prevention pipe.
4. the empty vaporizer of bathing of a kind of LNG as claimed in claim 3, is characterized in that: described gasifying pipe outer wall is provided with heat-exchange fin, and heat-exchange fin is arranged on gasifying pipe outer wall in the shape of a spiral.
5. the empty vaporizer of bathing of a kind of LNG as described in any one in claim 1-4, is characterized in that: described frost prevention pipe is connected with gasifying pipe by U-shaped connecting tube, between described gasifying pipe, is also connected by U-shaped connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087449.1U CN203718375U (en) | 2014-02-27 | 2014-02-27 | LNG (liquefied natural gas) air bathing gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087449.1U CN203718375U (en) | 2014-02-27 | 2014-02-27 | LNG (liquefied natural gas) air bathing gasifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718375U true CN203718375U (en) | 2014-07-16 |
Family
ID=51157524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087449.1U Withdrawn - After Issue CN203718375U (en) | 2014-02-27 | 2014-02-27 | LNG (liquefied natural gas) air bathing gasifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807601A (en) * | 2014-02-27 | 2014-05-21 | 张家港市华机环保新能源科技有限公司 | LNG (Liquefied Natural Gas) air bath gasification device |
| CN105651104A (en) * | 2016-01-04 | 2016-06-08 | 郑州轻工业学院 | Anti-frosting LNG air-heated nanofluid heat exchange pipe |
-
2014
- 2014-02-27 CN CN201420087449.1U patent/CN203718375U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807601A (en) * | 2014-02-27 | 2014-05-21 | 张家港市华机环保新能源科技有限公司 | LNG (Liquefied Natural Gas) air bath gasification device |
| CN103807601B (en) * | 2014-02-27 | 2015-12-23 | 张家港市华机环保新能源科技有限公司 | A kind of LNG sky bath vaporizer |
| CN105651104A (en) * | 2016-01-04 | 2016-06-08 | 郑州轻工业学院 | Anti-frosting LNG air-heated nanofluid heat exchange pipe |
| CN105651104B (en) * | 2016-01-04 | 2018-02-27 | 郑州轻工业学院 | A kind of LNG air temperature type nano-fluid heat exchanger tubes of antifrost |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |