CN206146267U - Adopt LNG vaporizer of middle medium of self -loopa - Google Patents

Abstract

The utility model discloses an adopt LNG vaporizer of middle medium of self -loopa, which comprises a housin, the first baffle and the second baffle of multirow multiseriate through -hole is offered respectively in the adoption in the casing, separates it in proper order to be divided into the LNG heat transfer chamber that is provided with into, exports in casing top correspondence, first heat transferring medium heat transfer chamber and to control the second heat transferring medium heat transfer chamber that the lateral wall correspondence was provided with into, exported, fixed mounting has the first heat pipe that runs through LNG heat transfer chamber and first heat transferring medium heat transfer chamber in the through -hole of first baffle, fixed mounting has the second heat pipe that runs through first heat transferring medium heat transfer chamber and second heat transferring medium heat transfer chamber in the through -hole of second baffle. The utility model discloses have simple structure, operation reliably solved effectively 163 DEG C the heat transferring medium that the time arouses of low temperature LNG vaporization freeze, arouse vaporizer vaporization performance deterioration scheduling problem.

Description

A kind of LNG vaporization device of employing self-loopa intermediate medium

Technical field

The utility model is related to a kind of vaporizer, more particularly, to a kind of LNG vaporization device of employing self-loopa intermediate medium, Belong to field of heat exchangers.

Background technology

As the further anxiety of world energy sources structure is increasingly serious with environmental pollution, people increasingly focus on exploitation profit Use new forms of energy.Natural gas is increasingly favored as a kind of cleaning, the efficient energy.Natural gas normal temperature is gas, is not easy to Storage and long distance transportation, thus it is general using -163 DEG C of cryogenic liquids (LNG) are first transformed into, then store and remote Transport.But before using LNG, then it is to 5 DEG C of left sides to need that liquid LNG of -163 DEG C or so temperature heats up using vapourizing unit Right gaseous natural gas (NG).

Being presently used for LNG vaporization vaporizer is mainly included with Types Below：

(1), in the heat transfer Bottomhole pressure of the device, pipe is outer seawater spraying device spray sea for open-frame type vaporizer, i.e. LNG Water realizes exchanging for seawater and the heat of LNG in heat-transfer pipe；The apparatus structure is simple, and heat exchange volume is big, directly using seawater and LNG is exchanged heat, but because LNG is big in the heat transfer process Exchange of apparent heat temperature difference, released cold quantity is more, is easily caused seawater icing, because This device vaporization efficency stability can not be protected.

(2) vaporizer with intermediate heat transfer media, i.e. LNG are exchanged heat with intermediate heat transfer media, intermediate heat transfer media with Seawater (or other thermals source) exchanged heat, because intermediate heat transfer media adopts subzero medium, it is ensured that system is stablized Operation；But due to the device for intermediate flow need to be increased so that apparatus structure is complicated.

(3) shell-and-tube vaporizer, though the vaporizer compact conformation, because pipe shell type heat exchange efficiency is not high and heat source stream Amount is larger, does not ensure that stable the carrying out of LNG vaporization.

The patent of Application No. 201510313021.3 discloses a kind of LNG vaporization device of employing step vaporisation techniques, should If system is mainly made up of housing, dividing plate, dry heat pipe, wherein：Two pieces of porous barriers are by housing every being divided into 3 cavitys, upper chambers Body two ends correspond to respectively NG outlets and LNG imports, and middle chamber two ends correspond to respectively the outlet of the first heat transferring medium and the first heat exchange Medium entrance, lower cavity two ends correspond to respectively the second heat transferring medium import and the outlet of the second heat transferring medium.Heat pipe is respectively perpendicular It is fixedly installed on two pieces of dividing plates, is extended through in three different cavitys.The cold of LNG passes to the first heat exchange and is situated between by heat pipe Cold is passed to the second heat transferring medium by matter, the first heat transferring medium by heat pipe again.The invention exists to ensure the first heat transferring medium Circulate in first heat transferring medium heat exchanging chamber, corresponding power circulating device and circulation line need to be provided with, this not only adds The energy loss and cost of device, and whole device complexity is increased, reliability decrease.

The content of the invention

The purpose of this utility model is the defect of the function limitation existing for above-mentioned prior art, there is provided one kind is adopted With the LNG vaporization device of self-loopa intermediate medium.

Vaporizer of the present utility model absorbs the buoyance lift after the heat vaporization of the second heat transferring medium using the first heat transferring medium Power and absorption LNG colds are condensed into the gravity of liquid, promote the first heat transferring medium to produce in the first heat transferring medium heat exchanging chamber 9 Under self-loopa flowing, simple structure and without the need for extra power.

In order to achieve the above object, the utility model is adopted the following technical scheme that：

Adopt in a kind of LNG vaporization device of employing self-loopa intermediate medium, including housing 4, the housing 4 and offer respectively First dividing plate 7 of multiple lines and multiple rows through hole and second partition 10, by its successively every be divided into the top of housing 4 be correspondingly arranged on into and out of Mouthful LNG heat exchanging chambers 6, the first heat transferring medium heat exchanging chamber 9 and left and right sidewall be provided with the second heat transferring medium heat exchanging chamber of import and export 13；Be installed with the through hole of first dividing plate 7 through LNG heat exchanging chambers 6, the first heat transferring medium heat exchanging chamber 9 it is first hot Pipe 2；It is installed with the through hole of the second partition 10 and is exchanged heat through the first heat transferring medium heat exchanging chamber 6, the second heat transferring medium Second heat pipe 12 in chamber 13.

Further, the first heat pipe 2 described above is applied in LNG heat exchanging chambers 6 one section of outer wall and described second is hot Some horizontal fins 3 are each set with vertically on the outer wall of be applied in the second heat transferring medium heat exchanging chamber 13 one section of pipe 12； Circumferentially it is set with the outer wall of be applied in the first heat transferring medium heat exchanging chamber 9 one section of the heat pipe 12 of first heat pipe 2 and second There are some vertical fins 8.

Further, the first dividing plate 7 described above and second partition 10 and the connection of the housing 4 are to be welded to connect.It is described Through hole on first dividing plate 7 and second partition 10 be arranged as staggeredly or in-line arrangement arrangement.

Further, the heat pipe 12 of the first heat pipe described above 2 and second is applied in a section in the first heat transferring medium heat exchanging chamber 9 Length be respectively less than the 1/2 of the volume height of the first heat transferring medium heat exchanging chamber 9.The first heat transferring medium heat exchanging chamber 9 is interior Portion's pressure is equal to the airtight cavity of 100Pa-200Pa, and storage is set in cavity has the condensation end of the second heat pipe of submergence 12 and less than the The low boiling working fluid of the 1/2 of the volume height of one heat transferring medium heat exchanging chamber 9.

First heat transferring medium described in the utility model is directly exchanged heat by heat pipe with LNG, is released during due to LNG vaporization The amount of letting cool is big, is to ensure that the first heat transferring medium will not freeze in heat transfer process, then need using low boiling phase-change heat-exchange medium such as Propane；And second heat transferring medium need not consider the problems referred to above, i.e., can be such as seawater using general heat transferring medium.To ensure three Planting medium can be exchanged heat and be realized stepping up for LNG temperature, and LNG and the second heat transferring medium are reverse flow.

The utility model according to the vaporisation characteristics of LNG vaporization process, by heat in reasonable combination and arrangement various heat exchange chamber The evaporation ends and condensation end of pipe are carried out ensureing stablizing for LNG vaporization；On the whole, the first heat pipe being placed in LNG heat exchanging chambers 6 2 and the second heat pipe 12 for being placed in the first heat transferring medium heat exchanging chamber 9 for heat pipe condensation end；It is placed in the first heat transferring medium heat exchanging chamber The first heat pipe 2 in 9 and the evaporation ends that the second heat pipe 12 being placed in the second heat transferring medium heat exchanging chamber 13 is heat pipe.

Second heat transferring medium described in the utility model flows in the second heat transferring medium heat exchanging chamber 13, with the second heat pipe 12 Evaporation ends exchanged heat, the evaporation ends of the second heat pipe 12 absorb the heat from the second heat transferring medium and by its condensation end general Heat transfer gives the first heat transferring medium；First heat transferring medium to absorb and be vaporizated into gaseous state, gaseous first heat exchange by liquid after heat The evaporation ends of medium and the first heat pipe 2 are exchanged heat and are transferred heat to LNG by its condensation end.

Description of the drawings

Fig. 1 is the structural representation of the utility model patent；

In figure：1st, NG outlets；2nd, the first heat pipe；3rd, horizontal fin；4th, housing；5th, LNG imports 6, LNG heat exchanging chambers；7th, One dividing plate；8th, vertical fins；9th, the first heat transferring medium heat exchanging chamber；10th, second partition；11st, the second heat transferring medium outlet；12nd, Two heat pipes；13rd, the second heat transferring medium heat exchanging chamber；14th, the second heat transferring medium outlet.

Specific embodiment

With reference to the accompanying drawings and detailed description, the utility model is described in further detail, but the utility model Protection domain is not limited to following embodiments, the technical scheme that all employing equivalents or equivalent transformation form are obtained, in this reality Within the scope of novel protected.

As shown in Figure 1, it is a kind of LNG vaporization device of employing self-loopa intermediate medium of the present utility model, including housing 4, using the first dividing plate 7 and second partition 10 for offering multiple lines and multiple rows through hole respectively in the housing 4, by it successively every being divided into LNG heat exchanging chambers 6, the first heat transferring medium heat exchanging chamber 9 and the left and right sidewall for being correspondingly arranged on import and export at the top of housing 4 is provided with Second heat transferring medium heat exchanging chamber 13 of import and export；Be installed with the through hole of first dividing plate 7 through LNG heat exchanging chambers 6, First heat pipe 2 of the first heat transferring medium heat exchanging chamber 9；It is installed with the through hole of the second partition 10 and is situated between through the first heat exchange Second heat pipe 12 of matter heat exchanging chamber 6, the second heat transferring medium heat exchanging chamber 13.Wherein, first heat pipe 2 is applied in LNG heat exchanging chambers 6 In one section of outer wall on and second heat pipe 12 be applied in edge on one section in the second heat transferring medium heat exchanging chamber 13 of outer wall Axially each it is set with some horizontal fins 3；The heat pipe 12 of first heat pipe 2 and second is applied in the first heat transferring medium heat exchanging chamber Some vertical fins 8 are circumferentially set with the outer wall of a section in 9.First dividing plate 7 and second partition 10 and the shell The connection of body 4 is to be welded to connect.Through hole on first dividing plate 7 and second partition 10 be arranged as staggeredly or in-line arrangement arrangement. The length of be applied in the first heat transferring medium heat exchanging chamber 9 one section of the heat pipe 12 of first heat pipe 2 and second is respectively less than described The 1/2 of the volume height of one heat transferring medium heat exchanging chamber 9.The first heat transferring medium heat exchanging chamber 9 is that internal pressure is equal to 100Pa- The airtight cavity of 200Pa, storage is set in cavity has the condensation end of the second heat pipe of submergence 12 and less than the first heat transferring medium heat exchanging chamber 9 The low boiling working fluid of the 1/2 of volume height.

A kind of implementation method of the LNG vaporization device of employing self-loopa intermediate medium of the present utility model, flow process is as follows：

1st, LNG heat exchange processes：LNG flows into LNG heat exchanging chambers 6 and is exchanged heat with the condensation end of the first heat pipe 2 from LNG imports 5, Absorb low boiling working fluid in heat pipe and the heat for obtaining is absorbed from the first heat transferring medium so as to temperature rising, by -163 DEG C of LNG liters Temperature is normal temperature NG, is subsequently discharged from NG outlets 1, completes the vaporescence of LNG.

2nd, the first heat transferring medium heat exchange process：The first heat transferring medium in first heat transferring medium heat exchanging chamber 9 of liquid and The condensation end of two heat pipes 12 is exchanged heat, and absorbs low boiling working fluid in heat pipe and the heat vaporization for obtaining is absorbed from the second heat transferring medium Produce buoyancy lift.Gaseous first heat transferring medium constantly rises, and exchanges heat first heat pipe 2 in cavity 9 with the first heat transferring medium Evaporation ends are exchanged heat, and absorb the cold from LNG, and temperature reduces being condensed into liquid.First heat transferring medium of liquid is in gravity In the presence of flow back downwards along the outer wall of vertical fins 8 of the first heat pipe 2, be finally back to the first heat transferring medium heat exchanging chamber 9 Bottom, the first heat transferring medium of liquid continues absorption heat and is vaporizated into gaseous state, and the process is gone round and begun again.

3rd, the second heat transferring medium heat exchange process：Second heat transferring medium flows into the second heat exchange and is situated between from the second heat transferring medium import 14 Matter heat exchanging chamber 13 is exchanged heat with the evaporation ends as the second heat pipe 12, heat is supplied to into the first heat transferring medium so that first Heat exchange medium temperature is raised and vaporized；By adjusting the flow into the second heat transferring medium in the second heat transferring medium heat exchanging chamber 13, So as to match LNG vaporization amount, the regulation of real-time working condition is realized.

Embodiment of the present utility model is these are only, its description is more concrete and detailed, but can not therefore be understood It is the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, do not taking off On the premise of conceiving from the utility model, the technical scheme that all employing equivalents or equivalent transformation are formed belongs to this practicality The protection domain of new requirement.

Claims (3)

1. a kind of LNG vaporization device of employing self-loopa intermediate medium, including housing (4), it is characterised in that：In the housing (4) Using the first dividing plate (7) and second partition (10) that offer multiple lines and multiple rows through hole respectively, by it successively every being divided in housing (4) Top is correspondingly arranged on LNG heat exchanging chambers (6), the first heat transferring medium heat exchanging chamber (9) and the left and right sidewall of import and export and is correspondingly arranged on Second heat transferring medium heat exchanging chamber (13) of import and export；It is installed with the through hole of first dividing plate (7) through LNG heat exchange Chamber (6) and first heat pipe (2) of the first heat transferring medium heat exchanging chamber (9), are installed with the through hole of the second partition (10) Through the first heat transferring medium heat exchanging chamber (9) and second heat pipe (12) of the second heat transferring medium heat exchanging chamber (13), first dividing plate (7) through hole and on second partition (10) be arranged as staggeredly or in-line arrangement arrangement；First heat pipe (2) and the second heat pipe (12) The length of a section be applied in the first heat transferring medium heat exchanging chamber (9) is respectively less than the first heat transferring medium heat exchanging chamber (9) volume The 1/2 of height；The first heat transferring medium heat exchanging chamber (9) is equal to the airtight cavity of 100Pa-200Pa for internal pressure, in cavity If storage have the heat pipe of submergence second (12) condensation end and less than the first heat transferring medium heat exchanging chamber (9) volume height 1/2 it is low Boiling point working medium.

2. the LNG vaporization device of employing self-loopa intermediate medium according to claim 1, it is characterised in that：Described first is hot Manage on one section that (2) are applied in LNG heat exchanging chambers (6) of outer wall and second heat pipe (12) is applied in the second heat transferring medium and changes Each it is set with some horizontal fins (3) on the outer wall of a section in hot chamber (13) vertically；First heat pipe (2) and second Some vertical fins are circumferentially set with the outer wall of be applied in the first heat transferring medium heat exchanging chamber (9) one section of heat pipe (12) (8)。

3. the LNG vaporization device of employing self-loopa intermediate medium according to claim 1, it is characterised in that：Described first every Plate (7) and second partition (10) and the connection of the housing (4) are to be welded to connect.