CN104154786A - Three-medium efficient LNG vaporizer strengthening evaporation and condensation - Google Patents
Three-medium efficient LNG vaporizer strengthening evaporation and condensation Download PDFInfo
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- CN104154786A CN104154786A CN201410411025.0A CN201410411025A CN104154786A CN 104154786 A CN104154786 A CN 104154786A CN 201410411025 A CN201410411025 A CN 201410411025A CN 104154786 A CN104154786 A CN 104154786A
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Abstract
A three-medium efficient LNG vaporizer strengthening evaporation and condensation comprises a cylindrical shell. The two ends of the shell are provided with a left tube plate and a right tube plate respectively, one tube plate is provided with a liquid inlet end cap and an air outlet end cap, the liquid inlet end cap is provided with a cavity and an LNG inlet, the air outlet end cover is provided with a cavity and an LNG outlet, the upper portion of the inside of the shell is provided with multiple LNG medium heat exchange tubes, one end of each LNG medium heat exchange tube is communicated with the liquid inlet end cap, and the other end of each LNG medium heat exchange tube is communicated with the air outlet end cap. The vaporizer is characterized in that the other tube plate is provided with a water inlet end cap and a water outlet end cap, the water inlet end cap is provided with a cavity and a water inlet, the water outlet end cap is provided with a cavity and a water outlet, the lower portion of the inside of the shell is provided with hot water medium heat exchange tubes, one end of each hot water medium heat exchange tube is communicated with the water inlet end cap, the other end of each hot water medium heat exchange tube is communicated with the water outlet end cap, and the shell is filled with liquid with the boiling point below 0 DEG C. The vaporizer eliminates the phenomenon that water of an existing LNG vaporizer is prone to freezing, and is mainly used for vaporizing low-temperature liquid LNG.
Description
Technical field
The present invention relates to heat transmission equipment manufacturing technology field, the LNG gasifier of the efficient enhanced water evaporation of especially a kind of three medium, condensation.
Background technology
LNG gasifier belongs to plant equipment manufacturing technology field, is mainly used in the industries such as petrochemical industry, boats and ships, metallurgy, naval vessels, electric power, is that a kind of LNG by low temperature liquid is gasificated into spendable gas and the gasifier that designs.
The most coil pipe type gasifiers that adopt of liquid LNG gasifier of manufacturing now, take water as heat medium, and heat exchange fuse is the spiral tube structure that light pipe spirals.Also some is the gasifier of light pipe overcoat flat aluminum fin, take air as heat medium, and fin cross section is hub-and-spoke configuration.Two class gasifiers are all to carry out heat exchange work with two media, liquid-gas gentle-gas.Coiled water heating gasifying device heat medium water and heated medium LNG only depend on the heat exchange of light pipe, and heat transfer effect is poor, and key is a bit that the temperature of the LNG of low temperature liquid while entering heat exchanger is-162 ℃, very easily causes the ice of water.Although the heat exchange area that star-like aluminium radiator fin gasifier is strengthened under unit volume is larger, the density of air own is little, and specific heat is also little, and heat transfer coefficient is lower, and the heat exchange amount of air can not meet the heat requirement of the liquid LNG gasification of large flow.In addition, air heat gasifier volume is large, is not suitable for the motion occasions such as boats and ships and uses.
Summary of the invention
Object of the present invention will solve very easily ice of existing coiled water heating gasifying device heating water exactly, heat exchange area is less, and the dull and stereotyped star-like gasifier heat transfer coefficient of air heat is less and appearance and size is not suitable for greatly the problem that the motion occasions such as boats and ships are used, provide the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium, condensation.
Concrete scheme of the present invention is: the efficient enhanced water evaporation of a kind of three medium, the LNG gasifier of condensation, there is barrel-type casing, housing two ends are provided with a left side, right tube sheet, on the tube sheet of one end, be provided with therein feed liquor end cap and the end cap of giving vent to anger simultaneously, or at one end on tube sheet, establish feed liquor end cap, on other end tube sheet, set out gas end cap, liquid feeding end covers and is provided with cavity and LNG import, outlet side covers and is provided with cavity and LNG outlet, at housing internal upper part, be furnished with some LNG media for heat exchange pipes, one end of all LNG media for heat exchange pipes is communicated with feed liquor end cap, the other end is communicated with the end cap of giving vent to anger, it is characterized in that: on the tube sheet of one end, be provided with therein intake end cover and water outlet end cap simultaneously, or at one end on tube sheet, establish intake end cover, on other end tube sheet, set out water end (W.E.) lid, intake end cover is provided with cavity and water inlet, water side covers and is provided with cavity and delivery port, in housing, bottom is provided with hot aqueous medium's heat exchanger tube, one end of hot aqueous medium's heat exchanger tube is communicated with intake end cover, the other end is communicated with water outlet end cap, and in housing, be filled with boiling point lower than the liquid below 0 ℃.
In housing described in the present invention, filling liquid is cold-producing medium.
In housing described in the present invention, filling liquid is freon or ammonia or propane or iso-butane etc.
Filling liquid height described in the present invention in housing is the hot aqueous medium's heat exchanger tube higher than the superiors, and lower than undermost LNG media for heat exchange pipe.
The media for heat exchange pipe of LNG described in the present invention and hot aqueous medium's heat exchanger tube are to adopt strengthening thread heat exchange pipe or light pipe.
Operation principle of the present invention is: utilize the fresh water of normal temperature or seawater to remove to heat low-boiling liquid as media such as freon, ammonia, after these media and water heat exchange, the heat that absorbs water is easily evaporated to gaseous state.The interior cryogenic media LNG of pipe on after the medium risings such as the freon after gasification, ammonia and upper strata carries out heat exchange, the heat that LNG absorbs the gaseous mediums such as freon, ammonia is gaseous state by liquid state gasification, and media such as freon, ammonia after gasification are condensed into liquid state after cooling, under the effect of gravity, naturally fall in the liquid medium of lower floor.So move in circles, the LNG of low temperature liquid just gasification is available LNG gas.Sometimes in order to ensure being gasified totally of LNG, can separately increase LNG heater.
The present invention designs ingenious, simple in structure, has utilized evaporation and condensation technology, and has adopted efficient thermoexcell, and heat-transfer effect is good, and appearance and size is naturally little.And heating water directly do not contact with the LNG of the low temperature liquid of-162 ℃, overcome the icing phenomenon of water, prevented the freezing of heat exchanger tube, long service life.The present invention the results showed, combination property belongs to leading technology at home.With abroad comparing, obviously reach advanced world standards in the aspects such as reliability, heat transfer property, drag characteristic, vibration resistance, service life.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
In figure: 1-right-hand member tube sheet, 2-barrel-type casing, 3-LNG media for heat exchange pipe, 4-left end tube sheet, 5-feed liquor end cap, 6-LNG import, 7-LNG outlet, 8-the end cap of giving vent to anger, 9-water inlet, 10-intake end cover, 11-hot aqueous medium heat exchanger tube, 12-water outlet end cap, 13-delivery port, 14-freon.
The specific embodiment
Referring to Fig. 1, the present invention has barrel-type casing 2, housing two ends are provided with a left side, right tube sheet 4 and 1, on left end tube sheet 4, be provided with therein feed liquor end cap 5 simultaneously and at one end on tube sheet, establish feed liquor end cap 5 with the end cap 8(that gives vent to anger, on other end tube sheet, set out gas end cap 8), feed liquor end cap 5 is provided with cavity and LNG import 6, the end cap 8 of giving vent to anger is provided with cavity and LNG outlet 7, at housing internal upper part, be furnished with many U-shaped LNG media for heat exchange pipes 3, one end of all LNG media for heat exchange pipes 3 is communicated with feed liquor end cap 5, the other end is communicated with the end cap 8 of giving vent to anger, particularly: on left end tube sheet 4, establish intake end cover 10, on right-hand member tube sheet 1, set out water end (W.E.) lid 12(and on the tube sheet of one end, be provided with water inlet end 10 and water outlet end cap 12 therein simultaneously), intake end cover 10 is provided with cavity and water inlet 9, water outlet end cap 12 is provided with cavity and delivery port 13, in the interior bottom of housing 2, be provided with hot aqueous medium's heat exchanger tube 11, one end of hot aqueous medium's heat exchanger tube 11 is communicated with intake end cover 10, the other end is communicated with water outlet end cap 12, and in housing, be filled with Propellent 14 or ammonia or propane.
In housing described in the present embodiment, filling liquid can be various cold-producing mediums, or other boiling point is lower than 0 ℃ of following liquid.
Filling liquid height described in the present embodiment in housing is higher than hot aqueous medium's heat exchanger tube 11 of the superiors, and lower than undermost LNG media for heat exchange pipe 3.
The media for heat exchange of LNG described in the present embodiment pipe 3 and hot aqueous medium's heat exchanger tube 11 are to adopt strengthening thread heat exchange pipe.
Claims (6)
1. the efficient enhanced water evaporation of medium, the LNG gasifier of condensation, there is barrel-type casing, housing two ends are provided with a left side, right tube sheet, on the tube sheet of one end, be provided with therein feed liquor end cap and the end cap of giving vent to anger simultaneously, or at one end on tube sheet, establish feed liquor end cap, on other end tube sheet, set out gas end cap, liquid feeding end covers and is provided with cavity and LNG import, outlet side covers and is provided with cavity and LNG outlet, at housing internal upper part, be furnished with some LNG media for heat exchange pipes, one end of all LNG media for heat exchange pipes is communicated with feed liquor end cap, the other end is communicated with the end cap of giving vent to anger, it is characterized in that: on the tube sheet of one end, be provided with therein intake end cover and water outlet end cap simultaneously, or at one end on tube sheet, establish intake end cover, on other end tube sheet, set out water end (W.E.) lid, intake end cover is provided with cavity and water inlet, water side covers and is provided with cavity and delivery port, in housing, bottom is provided with hot aqueous medium's heat exchanger tube, one end of hot aqueous medium's heat exchanger tube is communicated with intake end cover, the other end is communicated with water outlet end cap, and in housing, be filled with boiling point lower than the liquid below 0 ℃.
2. the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium according to claim 1, condensation, is characterized in that: in described housing, filling liquid is cold-producing medium.
3. the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium according to claim 1, condensation, is characterized in that: in described housing, filling liquid is freon or ammonia or propane or iso-butane.
4. the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium according to claim 1 and 2, condensation, is characterized in that: the filling liquid height in described housing is higher than hot aqueous medium's heat exchanger tube of the superiors, and lower than undermost LNG media for heat exchange pipe.
5. the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium according to claim 3, condensation, is characterized in that: the filling liquid height in described housing is higher than hot aqueous medium's heat exchanger tube of the superiors, and lower than undermost LNG media for heat exchange pipe.
6. the LNG gasifier of the efficient enhanced water evaporation of a kind of three medium according to claim 1, condensation, is characterized in that: described LNG media for heat exchange pipe and hot aqueous medium's heat exchanger tube are to adopt strengthening thread heat exchange pipe or light pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410411025.0A CN104154786A (en) | 2014-08-20 | 2014-08-20 | Three-medium efficient LNG vaporizer strengthening evaporation and condensation |
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| CN201410411025.0A CN104154786A (en) | 2014-08-20 | 2014-08-20 | Three-medium efficient LNG vaporizer strengthening evaporation and condensation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017168A (en) * | 2016-07-11 | 2016-10-12 | 江苏科技大学 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
| CN106959033A (en) * | 2017-05-12 | 2017-07-18 | 青岛泽瑞节能设备有限公司 | Heat accumulation equipment vaccum phase conversion heat exchanger |
| CN113924438A (en) * | 2019-11-01 | 2022-01-11 | 克里奥斯塔股份有限公司 | Gasifier for vaporizing liquefied gas and method for vaporizing liquefied gas |
| CN115342456A (en) * | 2022-08-15 | 2022-11-15 | 新疆华奕新能源科技有限公司 | Anti-freezing and anti-scaling high-efficiency external cooling indirect evaporative cooler |
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| CN1124841A (en) * | 1994-12-14 | 1996-06-19 | 中国纺织大学 | Separated phase transition heat apparatus and technique for recovering low-temp. waste heat using azeotrope as medium |
| CN1264008A (en) * | 1999-02-04 | 2000-08-23 | 株式会社神户制钢所 | Middle fluid gasifier and method for supplying natural gas by gasifier |
| CN102353289A (en) * | 2011-10-14 | 2012-02-15 | 中国空分设备有限公司 | Intermediate heat medium re-boiling type vaporizer |
| CN102384682A (en) * | 2011-08-09 | 2012-03-21 | 江苏中圣高科技产业有限公司 | Internal-circulation special high-efficiency heat exchanger |
| CN202834735U (en) * | 2012-09-26 | 2013-03-27 | 江苏中圣高科技产业有限公司 | Middle fluid type vaporizer |
| CN204007256U (en) * | 2014-08-20 | 2014-12-10 | 湖北迪峰换热器股份有限公司 | The LNG gasifier of the efficient enhanced water evaporation of a kind of three medium, condensation |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1124841A (en) * | 1994-12-14 | 1996-06-19 | 中国纺织大学 | Separated phase transition heat apparatus and technique for recovering low-temp. waste heat using azeotrope as medium |
| CN1264008A (en) * | 1999-02-04 | 2000-08-23 | 株式会社神户制钢所 | Middle fluid gasifier and method for supplying natural gas by gasifier |
| CN102384682A (en) * | 2011-08-09 | 2012-03-21 | 江苏中圣高科技产业有限公司 | Internal-circulation special high-efficiency heat exchanger |
| CN102353289A (en) * | 2011-10-14 | 2012-02-15 | 中国空分设备有限公司 | Intermediate heat medium re-boiling type vaporizer |
| CN202834735U (en) * | 2012-09-26 | 2013-03-27 | 江苏中圣高科技产业有限公司 | Middle fluid type vaporizer |
| CN204007256U (en) * | 2014-08-20 | 2014-12-10 | 湖北迪峰换热器股份有限公司 | The LNG gasifier of the efficient enhanced water evaporation of a kind of three medium, condensation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017168A (en) * | 2016-07-11 | 2016-10-12 | 江苏科技大学 | LNG vaporizer utilizing phase-change heat transfer technology and vaporization method |
| CN106959033A (en) * | 2017-05-12 | 2017-07-18 | 青岛泽瑞节能设备有限公司 | Heat accumulation equipment vaccum phase conversion heat exchanger |
| CN113924438A (en) * | 2019-11-01 | 2022-01-11 | 克里奥斯塔股份有限公司 | Gasifier for vaporizing liquefied gas and method for vaporizing liquefied gas |
| CN115342456A (en) * | 2022-08-15 | 2022-11-15 | 新疆华奕新能源科技有限公司 | Anti-freezing and anti-scaling high-efficiency external cooling indirect evaporative cooler |
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Application publication date: 20141119 |