CN209639589U - A kind of heat exchanger tube with internal longitudinal wings structure - Google Patents
A kind of heat exchanger tube with internal longitudinal wings structure Download PDFInfo
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- CN209639589U CN209639589U CN201822126901.1U CN201822126901U CN209639589U CN 209639589 U CN209639589 U CN 209639589U CN 201822126901 U CN201822126901 U CN 201822126901U CN 209639589 U CN209639589 U CN 209639589U
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Abstract
A kind of heat exchanger tube with internal longitudinal wings structure can solve the problems, such as that Conventional optical tube type heat exchanger number of heat exchange tubes in structure optimization reduces bring overall structural strength and reduces.Including heat exchanger tube main body, the inside longitudinal wings of heat exchanger tube are circumferentially traversed in the heat exchanger tube main body tube along inner wall；The heat exchanger tube body exterior axially arranges external rings wing along heat exchanger tube, when tube fluid is through the internal longitudinal wings, is exchanged heat by the tube wall and the external rings wing of the heat exchanger tube main body with external fluid.The utility model is used for airborne electronic equipment cooling heat exchanger, it is ensured that the cooling working medium in inside and cool exterior air high efficient heat exchanging.Increase the contact surface heat exchange area of interior outer fluid and tube wall by introducing internal longitudinal wings and external rings wing, the heat exchange amount of single heat exchanger tube is improved, the usage quantity of heat exchanger tube can be reduced under conditions of structural strength does not reduce, mitigates heat exchanger weight, simplify overall structure, promotes airtight reliability.
Description
Technical field
The utility model relates to pipeline structure technical fields, and in particular to a kind of heat exchanger tube with internal longitudinal wings structure.
Background technique
In engineer application, heat exchanger is that one kind is used to that heat is transmitted to cold fluid from hot fluid and meets certain technique
It is required that equipment, generally can be divided into dividing wall type heat exchanger, direct contact heat exchanger and heat regenerator.In dividing wall type heat exchanger
In, cold and hot fluid is spaced apart by wall surface and is located at wall surface two sides, common bushing type, shell-and-tube and cross-flow
Heat exchanger mostly uses heat exchanger tube to separate cold fluid and hot fluid.For lighting tube-type heat exchanger tube, inside without special-shaped turbulence structure, tube side flow resistance
It is small, and exterior wall flows to non-selectivity in face of heat exchanging fluid, and fair current, adverse current and cross flow type recuperator can be widely applied.
But the lighting tube-type heat exchanger tube deficiency small there are heat exchange area, heat transfer temperature difference and heat exchange amount under the same conditions, exchange heat pipe
Quantity demand is higher.In the non-Ground Application occasion such as Aeronautics and Astronautics, when the volume of heat exchanger, weight, structural strength and reliability
When being key constraints, the application of lighting tube-type heat exchanger tube can be by larger limitation.
A kind of effective enhanced heat transfer mode of heat exchanger tube is to increase the contact area of fluid and wall surface, can be by increasing fin
Mode realize, on the surface of base of light pipe introduce extended surface formed fin with increase heat-transfer surface to promoted heat exchange effect
Rate.The organization plan of external rings wing can be used in heat exchanger tube applied to cross flow heat exchanger, and ring wing is usually by ring set and welding gold
The mode for belonging to thin slice is process, and can increase heat exchange pipe external surface product effectively to promote cross-current heat exchange efficiency, but the type
The axial arrangement intensity of heat exchanger tube is compared lower with straight wing (longitudinal wings) type heat exchanger tube.Under the conditions of airborne, for electricity in cabin
The cooling heat exchanger of sub- equipment is limited by bay section volume and working environment, flows through cooling working medium inside its heat exchanger tube and outside is cold
The type of flow of air is generally cross-current, and heat exchanger tube both ends connection heat exchanger shell need to combine axial supporting role,
And meet it is airborne under the conditions of mechanical environment requirement.Therefore use external rings wing heat exchanger tube and heat transfer requirements are met with minimum dosage,
When realizing the targets such as simplified, Weight-optimised, the airtight reliability optimization of heat exchanger structure, heat exchanger overall structural strength will cause
There are hidden danger.
The airborne application heat exchanging amount of thinking highly of, structural strength, airtight reliability and exchange capability of heat are more demanding.Therefore it is promoted
The exchange capability of heat of single heat exchanger tube simultaneously promotes its axially and radially structural strength, under set operating condition (heat transfer temperature difference, heat exchange amount,
The parameters such as the coefficient of heat transfer and flight mission profile are specific) number of heat exchange tubes and weld seam quantity can be greatly reduced, effectively promote gas
Close reliability simultaneously plays weight loss effect.
Utility model content
The utility model proposes a kind of heat exchanger tube with internal longitudinal wings structure, Conventional optical tube type heat exchanger can be solved and existed
Number of heat exchange tubes, which reduces bring overall structural strength, when structure optimization reduces problem.
To achieve the above object, the utility model uses following technical scheme:
A kind of heat exchanger tube with internal longitudinal wings structure, including heat exchanger tube main body, the heat exchanger tube main body tube are interior along inner wall
Circumferentially traverse the inside longitudinal wings of heat exchanger tube；
The heat exchanger tube body exterior axially arranges external rings wing along heat exchanger tube, when tube fluid is through the internal longitudinal wings,
It is exchanged heat by the tube wall and the external rings wing of the heat exchanger tube main body with external fluid.
Detailed description below:
The utility model is included in a length and diameter specifically in round aluminium bar/tube material, using the straight rib in rectangular section
Inside longitudinal wings scheme.Fin is in round tube internal circumferential equidistant arrangement, height interlaced arrangement, with the method for wire cutting pole/
Processing is formed inside pipe.Fin traverses entire pole/pipe, can increase the contact area of internal flow and wall surface, promotes heat exchange effect
Rate, while promoting the axial arrangement intensity of heat exchanger tube.Since fin height direction has thermal resistance, there is certain ladder in surface temperature
Degree, therefore the ratio between the practical heat exchange amount of fin and ideal heat exchange amount are measured with fin efficiency, fin efficiency may be expressed as:
For internal longitudinal wings structure involved in the utility model, single fin efficiency is through calculating up to 80% or more.
External rings wing is processed to be formed using the method for turning, it is ensured that bonding strength between fin and heat exchanger tube and is processed into
This is lower, while can eliminate other processing method bring risks such as ring set welding.It is changed since longitudinal wings are sustainable inside heat exchanger tube
Heat pipe structure, it can be ensured that heat exchanger tube will not deformation occurs in Tutrning Process for external rings wing, and technical solution implementation is higher.
Fin in heat exchanger tube outer axial direction equidistant arrangement, the spacing and height of fin respectively with the width and depth of cut of cutter when turning
Correlation, fin thickness are no more than spacing of fin.When plunderring heat exchanger tube outside cool exterior air, the gap between fin can be flowed through, and lead to
It crosses fin surface and outer tube wall to exchange heat with internal flow, fin efficiency are as follows:
For external rings fin structure involved in the utility model, single fin efficiency is through calculating up to 80% or more.
When bosher's mass flow is through inside heat exchanger tube, heat occurs with wall surface inside its internal longitudinal wings surface and heat exchanger tube and hands over
It changes, continues to export hot-fluid outward under the action of thermal difference of fluid and wall surface, take away cooling working medium waste heat.External cold sky simultaneously
Heat exchanger tube is plunderred outside gas, cross-current is formed in 90 ° of angles with the cooling working medium in inside, takes away tube wall waste heat, wall temperature is maintained to stablize, it can
Ensure that cooling working medium heat persistently distributes, achievees the purpose that cold fluid and hot fluid exchanges heat.
As shown from the above technical solution, the utility model be the exchange capability of heat for further promoting single heat exchanger tube, further
Heat exchanger tube dosage is reduced, to realize that heat exchanger loss of weight, structure are simplified and promote airtight reliability, is provided a kind of with internal longitudinal wings
The efficient heat-exchanging pipe of structure is to realize cooling working medium in pipe and manage outer cold air under given heat transfer temperature difference and specific heat exchange amount
Heat transfer requirements, and heat exchanger structure intensity requirement can be met under conditions of support tube quantity is greatly decreased, realize that heat exchanger is opened up
Flutter optimization.
The utility model is used for airborne electronic equipment cooling heat exchanger, it is ensured that the cooling working medium in inside and cool exterior air are high
Effect heat exchange.There is ring fin structure outside heat exchanger tube, contact area when plunderring round tube outside cold air can be promoted.Have inside heat exchanger tube
Longitudinal wings structure, when can promote bosher's mass flow through inside heat exchanger tube and the contact area of tube wall, while internal longitudinal wings can increase and change
The axial arrangement intensity of heat pipe.Increase the contact surface heat-transfer surface of interior outer fluid and tube wall by introducing internal longitudinal wings and external rings wing
Product, improves the heat exchange amount of single heat exchanger tube, the usage quantity of heat exchanger tube can be reduced under conditions of structural strength does not reduce, is subtracted
Light heat exchanger weight, simplifies overall structure, promotes airtight reliability.
The utility model has the beneficial effects that
While cold fluid and hot fluid persistently exchanges heat, since internal longitudinal wings and external horizontal fin considerably increase heat exchange area, mention
The exchange capability of heat of single heat exchanger tube under identical operating condition is risen, and internal longitudinal wings are the straight fin structure in the same direction with internal flow, to pipe
Interior on-way resistance influences minimum.Meanwhile the structural strength of single heat exchanger tube gets a promotion also by the introducing of longitudinal wings and ring wing, In
In engineer application, usage quantity and the weldering of heat exchanger tube can be reduced under conditions of not sacrificing heat exchanger structure intensity and internal flow resistance
Quantity is stitched, airtight reliability is improved while system weight reduces to realize and simplifies topology layout.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model；
Fig. 2 is the schematic diagram of internal structure of the utility model；
Fig. 3 is the utility model heat exchanger tube welding manner schematic diagram；
Fig. 4 is the utility model heat exchanger tube fluid form and heat exchange mode schematic diagram.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
As depicted in figs. 1 and 2, described in the present embodiment with internal longitudinal wings structure heat exchanger tube include heat exchanger tube main body 1,
External rings wing 2, reserved welding surface 3 and internal longitudinal wings 4, wherein
Heat exchanger tube main body 1 is process by antirust aluminum pipe/stick, for connecting heat exchanger front and back end shell structure, with after
Exhausted internal flow cooling working medium and cool exterior air simultaneously make it exchange heat under action of thermal difference, play sealing and supporting role；
External rings wing 2 is that the whole ring chip architecture around circular tube external wall face passes through turning along heat exchanger tube axial direction equidistant arrangement
Mode is process, and processing method is simple and easily controllable, and it is preferable that ring wing connect mechanical property with tube wall, for increasing exterior tube
Wall and cold air contact heat-exchanging area, and ring wing and tube wall integral structure can effectively promote the radial strength of heat exchanger tube；
The reserved welding surface 3 is arranged at 1 both ends step outer end face of heat exchanger tube main body, and welding surface is located at heat exchanger tube both ends
At step circle end face, Welding can be passed through with orifice plate plane.It is welded by modes such as vacuum brazings with housing parts,
Play sealing and connection function；
Internal longitudinal wings 4 are the rectangular section fin through heat exchanger tube, and 16 fins are circumferentially equiangularly arranged along inside pipe wall, phase
Angle is 22.5 ° between adjacent fin, is just interlocked, and is process by wire cutting mode, for increasing inner pipe wall and cooling fluid
Contact heat-exchanging area, and the integral structure of longitudinal wings and tube wall can effectively promote heat exchanger tube axial arrangement intensity.
As shown in figure 3, the welding manner of the utility model embodiment is to weld heat exchanger tube main body 1 by reserved welding surface 3
The import and export in heat exchanger is connect, heat exchanger tube top is entrance cavity, and lower part is back cavity, and cooling working medium, which is first entered by entrance cavity, changes
Inside heat pipe is simultaneously exchanged heat by the cold air outside tube wall and fin and heat exchanger tube into property, by after back cavity water conservancy diversion through the other side
Heat exchanger tube outflow, while continuing to exchange heat with cool exterior air.Heat exchanger entrance chamber and back cavity shell structure are completely by heat exchanger tube
Connection bearing is not necessarily to additional knot component, simple and reliable for structure.
Fluid-flow mode is as shown in figure 4, the form for plunderring transverse tube other than cold air flows through the gap between external rings wing 2 simultaneously
Heat exchange is carried out therewith takes away waste heat.High-temperature cooling working medium is flowed through inside heat exchanger tube and is sufficiently exchanged heat with internal longitudinal wings 4, with drop
Low temperature is simultaneously continuously circulated as equipment cooling.
In conjunction with Fig. 1,1 internal diameter of heat exchanger tube main body is di, outer diameter do, length l, external rings wing 2 is with a thickness of δ1, along heat exchange
Pipe is axial with specific spacing arrangement, fin height H1。
In conjunction with Fig. 2, longitudinal wings 4 with a thickness of δ2, circumferentially arranged inside heat exchanger tube along inner wall with special angle, fin height
For H2And H3.The heat exchanger tube external heat-exchanging face gross area is Ao, it includes fin protrusion area Ao1With intercostal plain wall section area
Ao2；The internal heat gross area is Ai, include fin protrusion area Ai1With intercostal plain wall section area Ai2.When cooling working medium
Temperature tfi, internal wall surface temperature twi, external wall surface temperature two, cool exterior air temperature is tfoWhen, pass through biography under steady state conditions, a reactor
The heat flow Φ of each link of thermal process is identical, introduces the Heat Flow Analysis method with unilateral fin, therefore:
Φ=hiAi1(tfi-twi)+hiηfiAi2(tfi-twi)=hiηiAi(tfi-twi)
Φ=hoAo1(two-tfo)+hoηfoAo2(two-tfo)=hoηoAo(two-tfo)
In formula:
For heat exchanger tube inside and outside finned surface gross efficiency, size depends on fin efficiency and fin area, general reachable
80% or more；tw/2For temperature value at pipe wall of heat exchange pipe half.Above-mentioned four formula of heat flow of simultaneous simultaneously eliminates twi、tw/2And two, can obtain
Pass through the heat exchange amount of this heat exchanger tube at a temperature of specific heat exchanging fluid are as follows:
With non-finned round tube heat exchange amount under same heat exchanging fluid shape body
It compares, is much larger than fin efficiency since its effective heat exchange area promotes ratio, comprehensively considers the fin gross area, heat exchange
The influence of the factors such as convection transfer rate, heat exchanger tube thermal conductivity between thickness of pipe wall, fluid and tube wall is simultaneously calculated in conjunction with above formula,
Its effective heat exchange amount can promote 4 times or more, and the total weight of heat exchanger tube needed for same heat exchange amount can reduce by 1/4.Pass through finite element
Method there is the heat exchange tube structure intensity of internal longitudinal wings to calculate the utility model embodiment, and axial strength and radial direction are strong
Degree is compared with the light pipe of same pipe thickness improves about 3 times.
Therefore the utility model embodiment can greatly reduce heat exchanger tube in heat exchanger with the efficient heat-exchanging pipe of internal longitudinal wings
Usage quantity can effectively reduce the volume and weight of heat exchanger and simplify overall structure.It is internal through the vertical of heat exchanger tube simultaneously
Fin structure can effectively promote heat exchange tube structure intensity, enhance the applicability under its harsh mechanical environment.
Meanwhile a kind of manufacture craft of heat exchanger tube with internal longitudinal wings structure of the utility model embodiment, technique step
It is rapid as follows:
Simultaneously clamping blank, end face are light-exposed for S100, standby materials in the tube or bar；
S200, turning, ride rank outer circle form welding end surface；
S300, vehicle annular groove guarantee axial groove spacing dimension, notice that aluminium skimmings caused by cutting are squeezed and deformed (bar increase
Bore inner hole step, both ends processing)；
S400, vehicle protector clamping parts, Che Fanduan step outer circle form welding end surface；
S500, double semicircle protector clamping parts are cut, screw fastening is loaded, and avoids clamping contact surface too small or loose-parts
Cause cutting current shakiness to form galvanic corrosion injuring part, cuts inner hole according to longitudinal wings relative contour, line cuts speed not higher than 40mm2/ min,
Fin is without bending, distortion or fracture.Retain benchmark, repeatedly clamping and batch machining.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (8)
1. a kind of heat exchanger tube with internal longitudinal wings structure, including heat exchanger tube main body (1), it is characterised in that: the heat exchanger tube master
The inside longitudinal wings (4) of heat exchanger tube are circumferentially traversed in body (1) pipe along inner wall；
The heat exchanger tube main body (1) is external axially to arrange external rings wing (2) along heat exchanger tube, and tube fluid is through the internal longitudinal wings
(4) it when, is exchanged heat by the tube wall and the external rings wing (2) of the heat exchanger tube main body (1) with external fluid.
2. the heat exchanger tube according to claim 1 with internal longitudinal wings structure, it is characterised in that: the heat exchanger tube main body
(1) outside is also set up reserved welding surface (3), and the reserved welding surface (3) is arranged in heat exchanger tube main body (1) both ends step outer end
At face.
3. the heat exchanger tube according to claim 2 with internal longitudinal wings structure, it is characterised in that: the internal longitudinal wings (4)
Fin in heat exchanger tube main body (1) internal circumferential equidistant arrangement, height interlaced arrangement.
4. the heat exchanger tube according to claim 2 with internal longitudinal wings structure, it is characterised in that: the internal longitudinal wings (4)
Fin, along heat exchanger tube main body (1), inner wall is circumferentially equiangularly arranged, and angle is 22.5 ° between adjacent fins.
5. the heat exchanger tube according to claim 4 with internal longitudinal wings structure, it is characterised in that: the internal longitudinal wings (4)
Fin be 16.
6. the heat exchanger tube according to claim 2 with internal longitudinal wings structure, it is characterised in that: the external rings wing (2)
Fin in heat exchanger tube main body (1) outer axial direction equidistant arrangement.
7. the heat exchanger tube according to claim 2 with internal longitudinal wings structure, it is characterised in that: the external rings wing (2)
Spacing of fin be greater than or equal to fin thickness.
8. the heat exchanger tube according to claim 2 with internal longitudinal wings structure, it is characterised in that: the heat exchanger tube main body
It (1) is round aluminium bar or tube material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126901.1U CN209639589U (en) | 2018-12-18 | 2018-12-18 | A kind of heat exchanger tube with internal longitudinal wings structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126901.1U CN209639589U (en) | 2018-12-18 | 2018-12-18 | A kind of heat exchanger tube with internal longitudinal wings structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539853A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of heat exchanger tube with internal longitudinal wings structure |
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- 2018-12-18 CN CN201822126901.1U patent/CN209639589U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539853A (en) * | 2018-12-18 | 2019-03-29 | 中国电子科技集团公司第十六研究所 | A kind of heat exchanger tube with internal longitudinal wings structure |
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