CN106369272B - Liquefied natural gas (LNG) gasifier efficient heat-exchanging pipe and open-frame type gasifier - Google Patents
Liquefied natural gas (LNG) gasifier efficient heat-exchanging pipe and open-frame type gasifier Download PDFInfo
- Publication number
- CN106369272B CN106369272B CN201610737695.0A CN201610737695A CN106369272B CN 106369272 B CN106369272 B CN 106369272B CN 201610737695 A CN201610737695 A CN 201610737695A CN 106369272 B CN106369272 B CN 106369272B
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- efficient heat
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/124—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0309—Heat exchange with the fluid by heating using another fluid
- F17C2227/0316—Water heating
- F17C2227/0318—Water heating using seawater
Abstract
A kind of liquefied natural gas gasifying device efficient heat-exchanging pipe and open-frame type gasifier, it is characterised in that the efficient heat-exchanging pipe includes bringing-up section, gasification section and superheat section three parts；The inside pipe wall of the bringing-up section is plum-shaped structure；The inside pipe wall of the gasification section is shiny surface or channel structure, and the gasification section inner tube of screw thread or bellows structure is set in the gasification section pipe of the shiny surface or channel structure, is set with the gasification section of twisted tube structure inner tube again in the gasification section inner tube again；The inside pipe wall of the superheat section is shiny surface or channel structure, and the superheat section inner tube of bellows or bellows tube structure is set in the superheat section pipe of the shiny surface or channel structure.The gasification section of efficient heat-exchanging pipe of the present invention uses three layers of cannula structure, superheat section uses double-layer sleeve structure, and the multilayered structure of inner sleeve and annular space is formed in heat exchanger tube, improves the efficiency of heat transfer, and manufacture installation is simple, reduces the manufacturing cost of open-frame type gasifier heat exchange inner casing tube.
Description
Technical field
The present invention relates to the gasification installations of liquefied natural gas (LNG) a kind of, and in particular to a kind of open-frame type gasifier changes
Heat pipe, and the open-frame type gasifier using the heat exchanger tube.
Background technique
Gaseous natural gas (NG) is changed into liquified natural gas (LNG) after being cooled to -162 DEG C, while volume-diminished is extremely
1/620, it is readily transported and stores, but can not directly use.Before using liquefied natural gas, it is necessary to first pass through LNG receiving station
LNG gasification device is converted into gaseous natural gas (NG), just can be for users to use.With Chinese LNG receiving station Quantity and build
If the rapid development of scale, the market demand of LNG gasification device is also constantly expanding.
LNG gasification device is the key equipment in entire LNG supply chain.LNG receiving station builds by seashore mostly, and seawater is just
Most economical, the most convenient heat source at gasification LNG, in addition, the temperature of seawater is more stable, and thermal capacity is big, so using seawater
Open-frame type gasifier as heat source is just at the major gasification device of LNG receiving station.Open-frame type gasifier is suitable for base load
The large-scale gasification supply system of type, for the LNG ability that gasifies up to 180t/h or more, amount of vaporization can be in the load range of 0-100%
Operation.
The basic unit of open-frame type gasifier is heat exchanger tube, is generally made of finned tube, inner sleeve, plug-in part three parts,
Functionally it is generally divided into gasification section and bringing-up section.As the critical elements for realizing high efficient heat exchanging, inner sleeve pipe size precision prescribed
The installation requirement of height, finned tube and inner sleeve, finned tube and plug-in part is accurate, and such as in use, plug-in part is in spiral
Position changes under the action of the gas and liquid that rise, will directly affect the stability of open-frame type gasifier operation.
Currently, the open-frame type gasifier produced both at home and abroad, be equipped with inside the gasification section and bringing-up section of heat exchanger tube in
Plug-in unit, inner rib plate etc., it is such to design the manufacture difficulty and manufacturing cost for increasing heat exchanger tube, and heat exchange efficiency is unstable.Cause
This, designs that a kind of simplification is easy to install and the better open-frame type gasifier heat exchanger tube of heat transfer effect is extremely urgent.
Summary of the invention
The purpose of the present invention is easily occur for above-mentioned existing liquefied natural gas gasifying heat pipe because of unreasonable structural design
The problem of inner tube Influence of Displacement equipment safety operation, designs the novel efficient heat-exchanging pipe of one kind and is equipped with this high efficient heat exchanging
The open-frame type gasifier of pipe avoids heat exchanger tube internals and deforms displacement, influences asking for heat transfer efficiency and equipment stable operation
Topic.
Technical solution of the present invention first is that:
A kind of liquefied natural gas (LNG) gasifier efficient heat-exchanging pipe, it is characterised in that including bringing-up section, gasification section and mistake
Hot arc three parts；The inside pipe wall of the bringing-up section is plum-shaped structure；The inside pipe wall of the gasification section is shiny surface or conduit knot
Structure is set with the gasification section inner tube of screw thread or bellows structure, institute in the gasification section pipe of the shiny surface or channel structure
It states and is set with the gasification section of twisted tube structure inner tube again in gasification section inner tube again；The inside pipe wall of the superheat section is shiny surface or slot
The superheat section inner tube of bellows or bellows tube structure is set in the superheat section pipe of road structure, the shiny surface or channel structure.
The heat exchange pipe outer wall is straight fins structure, and the fin height on the same section of heat exchanger tube is identical or not identical.
The heat exchange pipe outer wall is helical fin structure, and the fin height on the same section of heat exchanger tube can not be identical.
Technical solution of the present invention second is that:
A kind of open-frame type gasifier being equipped with efficient heat-exchanging pipe, including the tube bank of several groups template and seawater spraying system,
It is characterized in that every group of template tube bank is rearranged by several efficient heat-exchanging pipes according to plate, all high efficient heat exchangings in every group of tube bank
The both ends of pipe are connected to same root gas collecting tube and same root collector tube respectively, and the quantity of the efficient heat-exchanging pipe can be according to open-shelf
The heat exchange area that needs under formula gasifier difference operating condition is adjusted.
The heat exchange area of open-frame type gasifier can be adjusted within the scope of 1 ㎡ -6000 ㎡.
It is equipped with throttling hole nozzle in the collector tube of the connection efficient heat-exchanging pipe, so that liquefaction is natural in every heat exchanger tube
The uniform flow of gas.
The flow of liquefied natural gas in every heat exchanger tube can be made by connecting the throttling hole nozzle in the collector tube of efficient heat-exchanging pipe
Evening ratio is not less than 95%.
The invention has the following advantages:
1. the outer wall of efficient heat-exchanging pipe of the present invention is straight fins or helical fin, and fin height can not be identical, effectively
Heat exchange area is increased, uniform study of water film distribution is formd, the heat exchange for enhancing seawater between the pipe outer wall that exchanges heat.
2. the gasification section of efficient heat-exchanging pipe of the present invention uses three layers of cannula structure, superheat section uses double-layer sleeve structure, changes
It is formed the multilayered structure of inner sleeve and annular space in heat pipe, improves the efficiency of heat transfer, and manufactures installation simply, reduces
The manufacturing cost of open-frame type gasifier heat exchange inner casing tube.
3. be not provided with interpolation fin in efficient heat-exchanging pipe, avoid fin and deform the case where being displaced, ensure that equipment
Stable operation.
4. open-frame type gasifier of the invention can adjust the heat exchange area of equipment by adjusting the quantity of heat exchanger tube, make to set
It is standby to be suitable for different workloads.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of efficient heat-exchanging pipe plate comb of the present invention.
Fig. 2 is the cross-sectional end view of efficient heat-exchanging pipe bringing-up section of the present invention.
Fig. 3 is the cross-sectional end view that efficient heat-exchanging pipe gasification section inner tube of the present invention is shiny surface.
Fig. 4 is the cross-sectional end view that efficient heat-exchanging pipe gasification section inner tube of the present invention is channel structure.
Fig. 5 is the cross-sectional end view that efficient heat-exchanging pipe superheat section inner tube of the present invention is shiny surface.
Fig. 6 is the cross-sectional end view that efficient heat-exchanging pipe superheat section inner tube of the present invention is channel structure.
Fig. 7 be in Fig. 3 A-A to cross-sectional view.
Fig. 8 is the cross-sectional view of B-B direction in Fig. 5.
Fig. 9 is open-frame type gasifier template Pipe bundle structure schematic diagram of the present invention.
In figure: 1- efficient heat-exchanging pipe, 2- collector tube, 3- gas collecting tube, 11- bringing-up section, 12- gasification section, 13- superheat section,
121- gasification section inner tube, 122- gasification section inner tube again, 131- superheat section inner tube.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figs. 1-5, a kind of efficient heat-exchanging pipe for open-frame type gasifier, 1 outer wall of efficient heat-exchanging pipe are straight fins
Structure, the fin height on same section can be identical or not identical.The efficient heat-exchanging pipe 1 divides for bringing-up section 11, gas
Change section 12,13 three parts of superheat section；In the bringing-up section 11, the inner wall of efficient heat-exchanging pipe 1 is quincunx fin structure, and pipe is interior not
It is set with any inner tube；In the gasification section 12, the inner wall of efficient heat-exchanging pipe 1 is shiny surface either channel structure, manages interior suit
There is gasification section inner tube 121, the gasification section inner tube 121 is screwed pipe structure, is further sleeved with gasification section again in gasification section inner tube 121
Inner tube 122, inner tube 122 is twisted tube structure to the gasification section again；In the superheat section 13, the inner wall of efficient heat-exchanging pipe 1 is light
Sliding surface either channel structure, superheat section inner tube 131 is set in pipe, and the superheat section inner tube 131 is bellows structure.
Embodiment two
A kind of efficient heat-exchanging pipe for open-frame type gasifier, with embodiment one the difference is that, outside efficient heat-exchanging pipe 1
Wall is helical fin structure, and the fin height on same section can be identical or not identical.
Embodiment three
A kind of open-frame type gasifier, including the tube bank of several groups template and seawater spraying system, every group of template tube bank is by several
Root efficient heat-exchanging pipe 1 according to plate arrange (every heat exchanger tube is arranged in parallel), the both ends of every efficient heat-exchanging pipe 1 respectively with gas collection
Pipe 3 is connected with collector tube 2.When open-frame type gasifier works, seawater spraying is restrained outer surface in template by seawater spraying system
On, by the effect of gravity, seawater is flowed along the outer wall of efficient heat-exchanging pipe 1 from top to bottom, and liquified natural gas (LNG) is from liquid collecting
It is flowed into every efficient heat-exchanging pipe 1 one by one in pipe 2, the bottom-up flowing in pipe.Seawater transfers heat to liquid day hot gas
(LNG), for LNG after it have passed through bringing-up section 11, gasification section 12, superheat section 13, final gasification is gaseous natural gas, and enters gas collection
Pipe 3, subsequently into user terminal.
The present invention can according to the needs of open-frame type gasifier different operating load, to adjust the quantity of heat exchanger tube, thus
The heat exchange area of open-frame type gasifier is adjusted, the adjusting range of heat exchange area is between 1 ㎡ -6000 ㎡.
Open-frame type gasifier of the present invention connects and is equipped with throttling hole nozzle in the collector tube 2 of efficient heat-exchanging pipe, can make every
The uniform flow of LNG in efficient heat-exchanging pipe, evening ratio is up to 95% or more.
The specific structure of part that the present invention does not relate to and inner tube, material etc. can be realized by using the prior art.
Claims (3)
1. a kind of liquefied natural gas gasifying device efficient heat-exchanging pipe, it is characterised in that including bringing-up section, gasification section and superheat section three
Part；The inside pipe wall of the bringing-up section is plum-shaped structure；The inside pipe wall of the gasification section is shiny surface or channel structure, in institute
The shiny surface stated or the gasification section inner tube that screw thread or bellows structure are set in the gasification section pipe of channel structure, the gasification section
The gasification section of twisted tube structure inner tube again is set in inner tube again, forms three layers of cannula structure；The inside pipe wall of the superheat section is
The mistake of bellows or bellows tube structure is set in the superheat section pipe of shiny surface or channel structure, the shiny surface or channel structure
Hot arc inner tube forms double-layer sleeve structure and improves heat to make the multilayered structure for foring inner sleeve and annular space in heat exchanger tube
Conduction efficiency, while being not provided with interpolation rib piece in heat exchanger tube avoids fin and deforms displacement, ensure that the stabilization of equipment
Operation；The heat exchange pipe outer wall is straight fins structure or helical fin structure, the fin height phase on the same section of heat exchanger tube
With or it is not identical, increase effectively heat exchange area, form uniform study of water film distribution, enhance seawater heat exchange pipe outer wall between
Heat exchange.
2. a kind of open-frame type gasifier for being equipped with efficient heat-exchanging pipe described in claim 1, including the tube bank of several groups template and sea
Water sprinkler system, it is characterized in that every group of template tube bank is rearranged by several efficient heat-exchanging pipes according to plate, in every group of tube bank
The both ends of all efficient heat-exchanging pipes are connected to same root gas collecting tube and same root collector tube respectively, the quantity of the efficient heat-exchanging pipe
It can be adjusted according to the heat exchange area needed under open-frame type gasifier difference operating condition；Connect the collector tube of efficient heat-exchanging pipe
Interior throttling hole nozzle can make the uniform flow rate of liquefied natural gas in every heat exchanger tube not less than 95%.
3. open-frame type gasifier according to claim 2, which is characterized in that the heat exchange area of open-frame type gasifier can be 1
It is adjusted within the scope of ㎡ -6000 ㎡.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737695.0A CN106369272B (en) | 2016-08-26 | 2016-08-26 | Liquefied natural gas (LNG) gasifier efficient heat-exchanging pipe and open-frame type gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737695.0A CN106369272B (en) | 2016-08-26 | 2016-08-26 | Liquefied natural gas (LNG) gasifier efficient heat-exchanging pipe and open-frame type gasifier |
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| Publication Number | Publication Date |
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| CN106369272A CN106369272A (en) | 2017-02-01 |
| CN106369272B true CN106369272B (en) | 2018-12-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240774A (en) * | 2018-02-11 | 2018-07-03 | 中国科学院工程热物理研究所 | The heat transfer unit (HTU) of heat output self adaptive control |
| CN110822976A (en) * | 2019-11-12 | 2020-02-21 | 西安石油大学 | Heat transfer pipe for open-frame seawater vaporizer |
| CN111187135B (en) * | 2020-01-16 | 2022-09-30 | 华亭煤业集团有限责任公司 | Prevent that gaseous phase feeding from taking liquid's safe collecting system |
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| CN201293590Y (en) * | 2008-11-18 | 2009-08-19 | 高宁 | Bottom waviness heat exchange tube |
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| CN106369272A (en) | 2017-02-01 |
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