CN103743278B - A kind of inner tube for open-frame vaporizer heat-exchange tube - Google Patents

A kind of inner tube for open-frame vaporizer heat-exchange tube Download PDF

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Publication number
CN103743278B
CN103743278B CN201410019690.5A CN201410019690A CN103743278B CN 103743278 B CN103743278 B CN 103743278B CN 201410019690 A CN201410019690 A CN 201410019690A CN 103743278 B CN103743278 B CN 103743278B
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positioning boss
tube
inner tube
open
pair
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CN103743278A (en
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李培跃
李士凯
于卫新
李兆峰
高瑞
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China National Petroleum Corp
China Huanqiu Contracting and Engineering Corp
725th Research Institute of CSIC
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China Huanqiu Engineering Co Ltd
725th Research Institute of CSIC
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Abstract

A kind of inner tube for open-frame vaporizer heat-exchange tube, relate to a kind of inner tube, including body (3.1), the endoporus (3.3) being provided centrally with the configuration of matrix centrage of body (3.1), the outer wall of body (3.1) is provided with multipair and body (3.1) integrative-structure positioning boss (3.2), every pair of positioning boss (3.2) includes that left positioning boss and right positioning boss, the left positioning boss of every pair of positioning boss (3.2) and right positioning boss are distributed in the outer wall of body (3.1) axisymmetricly;The present invention is not only convenient cooperatively forms inner tube, finned tube bilayer heat exchange tube structure with finned tube, and risen, by internal helicoid, the risk that LNG and NG effect inner tube position changes when reducing operation, improve finned tube external temperature, reduce LNG gasification device icing thickness and height, effectively overcome " ice blocks up " phenomenon of common open-frame type gasifier, substantially increase the service life of heat exchange efficiency and structure.

Description

A kind of inner tube for open-frame vaporizer heat-exchange tube
[technical field]
The present invention relates to a kind of inner tube, be specifically related to the inner tube for open-frame vaporizer heat-exchange tube of a kind of heat transfer that can be used for working fluid, gas and gas liquid mixture.
[background technology]
Gaseous natural gas (NG) is changed into liquified natural gas (LNG) after being cooled to-162 DEG C, volume-diminished about 620 times simultaneously, liquified natural gas (LNG) is the Main Morphology of natural gas storing and transport, has to pass through LNG receiving station gasifier when using liquefied natural gas and is converted into gaseous natural gas (NG).Along with the increase at full speed of liquefied natural gas (LNG) receiving station of China Quantity, the market demand of LNG gasification device is also constantly being expanded.
LNG gasification device is the key equipment in whole LNG supply chain, and the most conventional is open-frame type gasifier.The elementary cell of open-frame type gasifier is heat exchanger tube, heat exchanger tube is made up of finned tube, inner tube, turbolator three part, as high efficient heat exchanging critical elements, inner tube dimension precision requirement is high, not only requirement can smoothly and finned tube and pipe in turbolator assembling, and position can not change under internal helicoid rises LNG and NG effect during requiring to use, otherwise the stability that equipment runs will be directly affected.Domestic there is presently no the open-frame type gasifier product producing practicality, the research in terms of domestic open-frame type gasifier inner tube is also also in the blank stage, and therefore, the research of open-frame type gasifier is domestic new research field.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of inner tube for open-frame vaporizer heat-exchange tube, the present invention is not only convenient cooperatively forms inner tube, finned tube bilayer heat exchange tube structure with finned tube, and positioning boss reduces the risk changed by internal helicoid rising LNG and NG effect inner tube position when running, improve finned tube external temperature, reduce LNG gasification device icing thickness and height, effectively overcome " ice blocks up " phenomenon of common open-frame type gasifier, substantially increase the service life of heat exchange efficiency and structure.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of inner tube for open-frame vaporizer heat-exchange tube, including body, the endoporus being provided centrally with the configuration of matrix centrage of described body, the outer wall of described body is provided with multipair and body integrative-structure positioning boss.
Described inner tube for open-frame vaporizer heat-exchange tube, described every pair of positioning boss includes left positioning boss and right positioning boss, and the left positioning boss of described every pair of positioning boss and right positioning boss are distributed in the outer wall of body axisymmetricly.
Described inner tube for open-frame vaporizer heat-exchange tube, the outer wall at body is provided with two and the positioning boss with body integrative-structure, the left positioning boss of described every pair of positioning boss and right positioning boss is distributed in the outer wall of body axisymmetricly.
Described inner tube for open-frame vaporizer heat-exchange tube, the left positioning boss of described every pair of positioning boss and the position of right positioning boss can be with other left positioning boss to positioning boss and the position arranged crosswise of right positioning boss.
Described inner tube for open-frame vaporizer heat-exchange tube, the inner tube outer diameter D of inner tube3Circular diameter D residing for≤inner fin top2, inner tube wall thickness d, positioning boss height h=d/10 ~ 4d/5.
Described inner tube for open-frame vaporizer heat-exchange tube, the top of described positioning boss is in same circular arc, and described arc radius is positioning boss top arc radius R3, inner tube wall thickness is d, positioning boss height h, R3=D3/2+h。
Described inner tube for open-frame vaporizer heat-exchange tube, the both sides that described positioning boss is connected with body use arc transition, and side transition arc radius is transition arc radius R4, opposite side transition arc radius size is the radius R of inner fin top transition arc1, R4≥R1
Owing to using technical scheme as above, there is advantages that
1, inner tube for open-frame vaporizer heat-exchange tube of the present invention, has preferable conformability with finned tube inner fin, can be inserted smoothly by simple location, be extracted out, and assembly performance is good;Simultaneously because the existence of positioning boss, the inside and outside double-deck heat exchanger tube that finned tube after assembling is formed with inner tube is fixed relative to position, during the work of LNG gasification device, although being risen LNG and NG by internal helicoid to act on, inner tube position does not changes, form stable inside and outside double-deck heat exchange tube structure, improve the stability of LNG gasification device work, improve finned tube external temperature, reduce LNG gasification device icing thickness and height, effectively overcome " ice blocks up " phenomenon of common open-frame type gasifier, substantially increase the service life of heat exchange efficiency and structure.
2, the change of inner tube body size does not affect the supporting installation of the locating effect of positioning boss, beneficially LNG gasification device.
3, body is convenient with the integrative-structure of positioning boss uses extruding, drawing, die casting mode to prepare.
Accompanying drawing explanation
Fig. 1 is open-frame type gasifier heat exchange tube structure schematic diagram;
Fig. 2 is open-frame type gasifier finned tube inner fin structural representation;
Fig. 3 is the cross-sectional configuration schematic diagram of the present invention;
In the drawings: 1, turbolator;2, sea water;3, inner tube;3.1, body;3.2, positioning boss;3.3, the endoporus of matrix centrage configuration;4, finned tube;5, annular ditch groove;6, inner fin;R1, the radius of inner fin top transition arc;R2, the radius of inner fin bottom transition circular arc;R3, positioning boss top arc radius;R4, side transition arc radius;D1, finned tube diameter of bore;D2, circular diameter residing for inner fin top;D3, inner tube external diameter.
[detailed description of the invention]
Can be explained in more detail the present invention by the following examples, the open purpose of the present invention is intended to all changes and improvements in the protection scope of the invention, the invention is not limited in the following examples;
nullIn conjunction with the inner tube for open-frame vaporizer heat-exchange tube described in accompanying drawing 1 ~ 3,Including body 3.1,The endoporus 3.3 being provided centrally with the configuration of matrix centrage of described body 3.1,The outer wall of described body 3.1 is provided with multipair and body 3.1 integrative-structure positioning boss 3.2,Described every pair of positioning boss 3.2 includes left positioning boss and right positioning boss,Preferably,Outer wall at body 3.1 is provided with two to the positioning boss 3.2 with body 3.1 integrative-structure,The left positioning boss of described every pair of positioning boss 3.2 and right positioning boss are distributed in the outer wall of body 3.1 axisymmetricly,The left positioning boss of described every pair of positioning boss 3.2 and the position of right positioning boss can be with other left positioning boss to positioning boss 3.2 and the position arranged crosswise of right positioning boss,The inner tube outer diameter D of said inner tube 33Circular diameter D residing for≤inner fin top2, inner tube 3 wall thickness d, positioning boss height h=d/10 ~ 4d/5, the top of described positioning boss 3.2 is in same circular arc, and described arc radius is positioning boss top arc radius R3, positioning boss height h, R3=D3/2+h.The both sides that described positioning boss 3.2 is connected with body 3.1 use arc transition, and side transition arc radius is transition arc radius R4, opposite side transition arc radius size is the radius R of inner fin top transition arc1, R4≥R1, during assembling, transition arc radius is R1Matching with finned tube inner fin in side, described body 3.1 is prepared as integrative-structure by metal material by extruding, drawing, die casting mode.
Implement inner tube for open-frame vaporizer heat-exchange tube of the present invention, first finned tube 4 endoporus peripheral direction several inner fins 6 the most uniform are set, the top of inner fin 6, bottom use arc transition, and the radius of transition arc is respectively the radius R of inner fin top transition arc1, the radius R of inner fin bottom transition circular arc2, finned tube diameter of bore is D1, circular diameter residing for inner fin top is D2Preferably, outer wall at body 3.1 is provided with two to the positioning boss 3.2 with body 3.1 integrative-structure, the left positioning boss of first pair and second pair positioning boss 3.2 and right positioning boss are distributed in the outer wall of body 3.1 axisymmetricly, the left positioning boss of first pair of positioning boss 3.2 may be located in the middle of left positioning boss and the right positioning boss of second pair of positioning boss 3.2, the both sides that first pair is connected with body 3.1 with second pair of positioning boss 3.2 use radian transition to be connected, both sides transition arc radius can be different, and side transition arc radius is R4, opposite side transition arc radius size is the radius R of inner fin top transition arc1, during assembling, match with the inner fin 6 of finned tube 4 in this side, R4≥R1.The top of first pair and second pair positioning boss 3.2 is in same circular arc, positioning boss top arc radius R3=D/2+h.Described body 3.1 is prepared as integrative-structure by metal material by extruding, drawing, die casting mode, it is preferred that the aluminium alloy that the material selection coefficient of heat transfer of inner tube 3 is high, processability is good.
After testing, inner tube for open-frame vaporizer heat-exchange tube of the present invention has the effect that
A part of turbolator 1 is inserted inner tube 3, is assembled to composition heat exchanger tube in finned tube 4, the equidistant uniform inner fin of finned tube 4 endoporus circumferencial direction the most together, cooperatively forms annular ditch groove 5 with outer wall of inner tube.When open-frame type gasifier runs, heat exchanger tube is disposed vertically, it it is top-down flowing seawater 2 outside heat exchanger tube, LNG is by simultaneously entering inner tube 3 and annular ditch groove 5 bottom heat exchanger tube, owing in annular gap, LNG distance finned tube 4 inwall is nearest, and quantity is relatively fewer, and the sea water 2 that easily temperature outer with finned tube 4 is relatively high gasifies rapidly after there is heat exchange, there is heat exchange in the LNG that the natural gas after annular ditch groove 5 gasification and inner tube 3 internal coiling rise, and gradually makes LNG gasification in inner tube 3.nullOwing to have employed inner tube 3、The double-deck heat exchange tube structure of finned tube 4,Finned tube 4 temperature outside is improved,Efficiently reduce and freeze bottom heat exchanger tube,Inner tube 3 has preferable conformability with the inner fin 6 of finned tube 4,Can be inserted smoothly by simple location、Extract out,Assembly performance is good,Improve work efficiency,Finned tube 4 position relative with inner tube 3 after assembling is fixed,During the work of LNG gasification device,Although being risen LNG and NG by internal helicoid to act on,Inner tube 3 position does not changes,Formed stable interior、Outer double-deck heat exchange tube structure,Improve the stability of LNG gasification device work,Improve finned tube external temperature,Reduce LNG gasification device icing thickness and height,Effectively overcome " ice blocks up " phenomenon of common open-frame type gasifier,Substantially increase the service life of heat exchange efficiency and structure.
Part not in the detailed description of the invention is prior art.
The embodiment selected in this article for the open purpose of the present invention, it is suitable to be presently considered to be, it is to be understood that it is contemplated that include that all belong to all changes of this design and the embodiment in the scope of the invention and improvement.

Claims (4)

1. an inner tube for open-frame vaporizer heat-exchange tube, including body (3.1), it is characterized in that: the endoporus (3.3) being provided centrally with the configuration of matrix centrage of described body (3.1), the outer wall of described body (3.1) is provided with multipair and body (3.1) integrative-structure positioning boss (3.2);Described every pair of positioning boss (3.2) includes that left positioning boss and right positioning boss, the left positioning boss of described every pair of positioning boss (3.2) and right positioning boss are distributed in the outer wall of body (3.1) axisymmetricly;The left positioning boss of described every pair of positioning boss (3.2) and the position of right positioning boss and other left positioning boss to positioning boss (3.2) and the position arranged crosswise of right positioning boss;Inner tube (3) coordinates with the inner fin (6) of finned tube (4), D3For inner tube external diameter, inner tube outer diameter D3Circular diameter D residing for≤inner fin top2, inner tube (3) wall thickness d, positioning boss height h=d/10 ~ 4d/5.
Inner tube for open-frame vaporizer heat-exchange tube the most according to claim 1, it is characterized in that: the outer wall at body (3.1) is provided with two and the positioning boss (3.2) with body (3.1) integrative-structure, the left positioning boss of described every pair of positioning boss (3.2) and right positioning boss are distributed in the outer wall of body (3.1) axisymmetricly.
Inner tube for open-frame vaporizer heat-exchange tube the most according to claim 1, is characterized in that: the top of described positioning boss (3.2) is in same circular arc, and described arc radius is positioning boss top arc radius R3, inner tube (3) wall thickness is d, positioning boss height h, R3=D3/2+h。
Inner tube for open-frame vaporizer heat-exchange tube the most according to claim 1, is characterized in that: the both sides that described positioning boss (3.2) is connected with body (3.1) use arc transition, and side transition arc radius is transition arc radius R4, opposite side transition arc radius size is the radius R of inner fin top transition arc1, during assembling, transition arc radius is R1Match with finned tube inner fin in side, R4≥R1
CN201410019690.5A 2014-01-16 2014-01-16 A kind of inner tube for open-frame vaporizer heat-exchange tube Active CN103743278B (en)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106225550B (en) * 2016-07-22 2018-10-30 甘肃蓝科石化高新装备股份有限公司 A kind of open-frame type gasifier seawater distribution system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2163358Y (en) * 1993-07-10 1994-04-27 曾振洲 Indirectly heating high temp radiation tube
CN201628427U (en) * 2009-09-07 2010-11-10 上海汽车空调配件有限公司 Composite pipe structure for air-conditioner pipeline
CN201903280U (en) * 2010-12-21 2011-07-20 甘肃蓝科石化高新装备股份有限公司 Efficient star-shaped heat exchange tube for seawater open-frame type gasifier
CN102889813A (en) * 2012-10-19 2013-01-23 合肥通用机械研究院 Double-finned tube combined heat exchange component for high efficiency vaporizer
CN203758335U (en) * 2014-01-16 2014-08-06 中国船舶重工集团公司第七二五研究所 Inner tube for heat exchange tube of open rack vaporizer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012007872A (en) * 2010-05-24 2012-01-12 Kobe Steel Ltd Multi-layered heat transfer tube, method for producing the multi-layered heat transfer tube, and molding tool used for the method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2163358Y (en) * 1993-07-10 1994-04-27 曾振洲 Indirectly heating high temp radiation tube
CN201628427U (en) * 2009-09-07 2010-11-10 上海汽车空调配件有限公司 Composite pipe structure for air-conditioner pipeline
CN201903280U (en) * 2010-12-21 2011-07-20 甘肃蓝科石化高新装备股份有限公司 Efficient star-shaped heat exchange tube for seawater open-frame type gasifier
CN102889813A (en) * 2012-10-19 2013-01-23 合肥通用机械研究院 Double-finned tube combined heat exchange component for high efficiency vaporizer
CN203758335U (en) * 2014-01-16 2014-08-06 中国船舶重工集团公司第七二五研究所 Inner tube for heat exchange tube of open rack vaporizer

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