CN101226041A - Method for fluid reynolds number in pipe line to improve heat exchange efficacy as well as stirring machine - Google Patents
Method for fluid reynolds number in pipe line to improve heat exchange efficacy as well as stirring machine Download PDFInfo
- Publication number
- CN101226041A CN101226041A CNA2008100653125A CN200810065312A CN101226041A CN 101226041 A CN101226041 A CN 101226041A CN A2008100653125 A CNA2008100653125 A CN A2008100653125A CN 200810065312 A CN200810065312 A CN 200810065312A CN 101226041 A CN101226041 A CN 101226041A
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- heat exchange
- pipeline
- mixing device
- heat exchanger
- reynolds number
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- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 title description 2
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 239000011888 foil Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The invention relates to a means for improving heat-working efficiency of heat exchanger pipeline and a mixing device, which is characterized in that: a bar-shaped mixing device, the length of which is matched with the length of the pipeline, is arranged into the pipeline seal of the hear exchanger; the head part and rear part or interval parts of the bar-shaped mixing device are fixed on the inner wall of the heat exchanger pipeline. The mixing device is composed of a plurality of bars with cross sections of different geometrical shapes. The means for improving heat-working efficiency of heat exchanger pipeline and a mixing device has the advantages that the means for improving heat-working efficiency of heat exchanger pipeline and the mixing device are scientifically designed with simple technique; the operation is convenient; the mixing device is simply structured with low requirement for production technique. The mixing device which is arranged inside the pipeline is used to replace screw threads or cheveron arranged on the inner wall of prior pipeline and the mixing device can perform adjusting and mixing functions for the work medium that flows through the pipeline under the pressure fluxion condition, changing the Reynolds number of the work medium flowing through the heat exchange pipe and enabling the fluid work medium to be at the optimum turbulent condition; thus, the thermal efficiency of the heat exchange pipe is improved via improving the contact probability of the fluid medium with the pipe wall. The mixing device is especially applicable for the heat exchanger made by ultrathin alloy materials.
Description
Technical field
What the present invention relates to is heat exchanger tube, especially a kind of method and mixer that changes pipeline inner fluid Reynolds number raising heat exchange efficacy
Background technology
As everyone knows, heat exchanger is under with a kind of work working medium and equal environmental condition, and the heat power efficiency of heat exchanger is relevant with the following aspects:
1, the heat exchanger tube thermal conductivity is good more, and is fast more, and thermal power is high more;
2, flow velocity, pressure, the flow with working medium is relevant, selects coupling rationally;
3, the fluidised form with working medium is relevant.When under 1,2 identical working conditions, the turbulent condition of working medium will improve many than the heat exchange of advection state, that is to say, the raising that hot merit is imitated is relevant with turbulent condition.This is because the stirring movement of working medium in flowing, the thermograde circulation way when having broken laminar flow.The aspect of carrying out thermal energy exchange the soonest all is provided for each tiny volume of working medium, has eliminated the rule that the gradient of working medium own is conducted heat.
For example: the heat exchanger tube that air-condition heat exchanger adopts, original copper pipe that all adopts inner wall smooth is imitated in order to improve hot merit, rolls into internal thread or chevron at the inwall of heat exchanger tube copper pipe, make the working medium in the heat exchange copper tube of flowing through form a kind of turbulent condition, improve hot merit with this and imitate.
Along with the attenuate of copper pipe, copper pipe inner thread tooth depth is restricted or reduces, and has directly influenced turbulent effect, causes the hot merit of heat exchanger tube to imitate decline.
Disclosed ultrathin alloy material is effective for Chinese patent application numbers 200710074946.2 when making heat exchanger tube, same ultra-thinization that exists because of tube wall, not only less economical in tube wall inwall machining screw, and also tube wall can produce uneven homogenize, cause the stress of thread root to be concentrated, the intensity of pipe descends.Though the thermal conductivity of ultrathin alloy material pipe has had large increase, the heat transfer rate is faster.But when working medium was flowed through the heat exchanger tube of inner wall smooth, working medium was in the advection state, and this advection state can not be given full play to its effect.
Summary of the invention
The objective of the invention is the deficiency that exists when the heat exchanger tube at above-mentioned light-wall pipe, a kind of method and mixer that pipeline inner fluid Reynolds number improves heat exchange efficacy that change is provided.
The present invention can change the method that pipeline inner fluid Reynolds number improves heat exchange efficacy, it is characterized in that: insert the bar shaped mixer that a kind of length and pipeline adapt before heat exchange manifold seals.
Be provided with the elastic card that can stop built-in bar shaped mixer axial float in the described heat exchange manifold.
At least leave δ=0.1mm gap between described bar shaped mixer and heat exchange manifold inner tubal wall.
Described heat exchanger tube can be curved good coil pipe or straight tube or finned USB flash disk pipe.
Described heat exchanger tube can be copper pipe, stainless steel tube, aluminum pipe or carbon steel pipe.
The present invention can change the mixer that pipeline inner fluid Reynolds number improves heat exchange efficacy, it is characterized in that: the helical form bar shape that is different how much shapes by the cross section constitutes.
Described helical form bar shape employing is made with the material that heat exchanger tube does not have potential difference.
The material that described and heat exchanger tube does not have potential difference is stainless steel, plastics, alloy material.
The cross section of described helical form bar shape is single blade screw bar shape or cross blade screw bar shape or multiple-blade spiral bar body or volume root wire fried dough twist body.
The present invention can change method and the mixer design science that pipeline inner fluid Reynolds number improves heat exchange efficacy, and method is simple, enforcement is convenient, and described mixer is simple in structure, manufacture craft requires low.Utilization is arranged on bar shaped mixer in the pipeline and substitutes screw thread or chevron on the former pipeline inner wall, but forming, its convection current working medium by the road regulates agitating function under the pressure flow regime, change the Reynolds number of fluid working substance in the heat exchanger tube of flowing through, make the fluid working substance in the pipeline be in best turbulent condition, restrain with the machine that contacts of tube wall by improving liquid medium, improve the hot working efficiency of heat exchanger tube.The inventive method is particularly useful for the heat exchanger that the ultrathin alloy material pipe is made.
Method and mixer that the present invention can change pipeline inner fluid Reynolds number raising heat exchange efficacy are provided in detail by the following drawings and embodiment.
Description of drawings
Fig. 1 is provided with the ultra-thin alloy heat exchange tube structure schematic diagram of single blade screw strip mixer in being;
Fig. 2 is the A position structure for amplifying schematic diagram that is provided with the ultra-thin alloy heat exchanger tube of single blade screw strip mixer in shown in Figure 1;
Fig. 3 is the cross-sectional structure schematic diagram of single blade screw bar shape mixer;
Fig. 4 is an elastic force fixing structure schematic diagram;
Fig. 5 is another structural representation of the fixing card of elastic force;
Fig. 6 is the cross section structure schematic diagram of cross blade screw bar shape mixer;
Fig. 7 is the cross section structure schematic diagram of multiple-blade spiral bar body mixer.
Fig. 8 is the cross section structure schematic diagram of volume root wire fried dough twist body mixer.
The specific embodiment
Embodiment: can be clear that from Fig. 1 this is the enforcement structural representation of the inventive method in finned heat exchanger, its method is: insert single blade screw strip mixer 2 that length and heat exchange manifold 1 adapt before heat exchange manifold 1 seals; Single blade screw strip mixer 2 end to end by the fixing (see figure 2) of flexible fastening card 3 and heat exchange manifold 1 inwall, the gap delta=0.2mm of single blade screw strip mixer 2 and heat exchange manifold 1 inner tubal wall.
Described heat exchange manifold can be the ultra-thin stainless steel pipe.
The structure of described single blade screw strip mixer 2 as shown in Figure 3, it is formed by the stainless steel paillon foil twisting that the cross section is a word.
Described elastic force is fixing to block 3 as Fig. 4 or shown in Figure 5, for " [" shape or " U " are made by stainless steel wire, have elastic force.Rely on the fixing card of the elastic force elastic force of 3 openends and cooperating of heat exchange manifold 1 inwall, holding is (see figure 2) in heat exchange manifold 1, single blade screw strip mixer 2 axial floats that prevention heat exchange manifold 1 is built-in.
Described bar shaped mixer also can be cross blade screw bar shape mixer 4 (see figure 6)s, and it is the twisting of criss-cross stainless steel paillon foil by the cross section and forms.
Described bar shaped mixer also can be multiple-blade spiral bar body mixer 5 (see figure 7)s, and it is the twisting of many cross-like stainless steel paillon foil by cutting and forms.
Described bar shaped mixer also can be that volume root line segment is arranged spiral bar body mixer 6 (see figure 8)s, and it is formed through the spiral system of twisting by two plastics line segments 62 that form the wire 61 of folder shape side by side and be clamped between two wires.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (9)
1. one kind can change the method that pipeline inner fluid Reynolds number improves heat exchange efficacy, it is characterized in that:
Before sealing, heat exchange manifold inserts the bar shaped mixer that a kind of length and pipeline adapt.
2. according to the described method that changes pipeline inner fluid Reynolds number raising heat exchange efficacy of claim 1, it is characterized in that:
Be provided with the elastic card that can stop built-in bar shaped mixer axial float in the heat exchange manifold.
3. according to claim 1 or the 2 described methods that change pipeline inner fluid Reynolds number raising heat exchange efficacy, it is characterized in that:
At least stay the 0.1mm gap between described bar shaped mixer and heat exchange manifold inner tubal wall.
4. according to the described method that improves the heat exchange manifold heat power efficiency of claim 3, it is characterized in that:
Described heat exchanger tube can be curved good coil pipe or straight tube or finned USB flash disk pipe.
5. according to the described method that improves the heat exchange manifold heat power efficiency of claim 4, it is characterized in that: described heat exchanger tube can be copper pipe, stainless steel tube, aluminum pipe or carbon steel pipe.
6. one kind can change the mixer that pipeline inner fluid Reynolds number improves heat exchange efficacy, it is characterized in that:
The helical form bar shape that is different how much shapes by the cross section constitutes.
7. according to the described mixer that changes pipeline inner fluid Reynolds number raising heat exchange efficacy of claim 6, it is characterized in that:
Described helical form bar shape employing is made with the material that heat exchanger tube does not have potential difference.
8. according to claim 6 or the 7 described mixers that change pipeline inner fluid Reynolds number raising heat exchange efficacy, it is characterized in that:
The material that described and heat exchanger tube does not have potential difference is stainless steel, plastics or alloy material.
9. the described according to Claim 8 mixer that changes pipeline inner fluid Reynolds number raising heat exchange efficacy is characterized in that:
The cross section of described helical form bar shape is single blade screw bar shape or cross blade screw bar shape or multiple-blade spiral bar body or volume root line segment spiral bar body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100653125A CN101226041A (en) | 2008-01-31 | 2008-01-31 | Method for fluid reynolds number in pipe line to improve heat exchange efficacy as well as stirring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100653125A CN101226041A (en) | 2008-01-31 | 2008-01-31 | Method for fluid reynolds number in pipe line to improve heat exchange efficacy as well as stirring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101226041A true CN101226041A (en) | 2008-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100653125A Pending CN101226041A (en) | 2008-01-31 | 2008-01-31 | Method for fluid reynolds number in pipe line to improve heat exchange efficacy as well as stirring machine |
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| CN (1) | CN101226041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076080A (en) * | 2013-01-06 | 2013-05-01 | 大连理工大学 | Method for measuring tollmien-schlichting (T-S) waves in two-dimensional fluid passage based on local pressure |
-
2008
- 2008-01-31 CN CNA2008100653125A patent/CN101226041A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076080A (en) * | 2013-01-06 | 2013-05-01 | 大连理工大学 | Method for measuring tollmien-schlichting (T-S) waves in two-dimensional fluid passage based on local pressure |
| CN103076080B (en) * | 2013-01-06 | 2014-12-24 | 大连理工大学 | Method for measuring tollmien-schlichting (T-S) waves in two-dimensional fluid passage based on local pressure |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080723 |