CN205537281U - Helicla flute orifice plate heat exchanger - Google Patents
Helicla flute orifice plate heat exchanger Download PDFInfo
- Publication number
- CN205537281U CN205537281U CN201620170610.0U CN201620170610U CN205537281U CN 205537281 U CN205537281 U CN 205537281U CN 201620170610 U CN201620170610 U CN 201620170610U CN 205537281 U CN205537281 U CN 205537281U
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- China
- Prior art keywords
- heat exchanger
- orifice plate
- helicla flute
- crest line
- bobbin carriage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model provides a helicla flute orifice plate heat exchanger, relates to technical field such as heat transfer, refrigeration. This helicla flute orifice plate heat exchanger's characterized in that: the crest line of the slotted hole of above -mentioned helicla flute orifice plate (3) is the spiral crest line, at the within range that the pressure drop was allowwed, the thickness of helicla flute orifice plate (3) is thick as far as possible, nevertheless no longer than 14 of above -mentioned spiral crest line wavelength. The utility model discloses having broken through traditional hole plate heat exchanger and only having carried out the modified around hole shape form at the design time and confine, through the experiment discovery, helicla flute pore pair fluidic heat transfer effect is much better than the influence of ordinary orifice plate convection cell, and the heat transfer effect is strengthened greatly, but wide application in trades such as aviation, chemical industry, oil.
Description
Technical field
This utility model relates to heat exchange, condensation, refrigeration air-conditioner machinery equipment technical field, particularly relates to a kind of helical groove hole sheet heat exchanger.
Background technology
Heat exchanger is that the partial heat of hot fluid passes to the equipment of cold flow body is chemical industry, oil, power, Aero-Space and the common apparatus of other many industrial departments, occupies critical role aborning.Slotted eye longitudinal-flow heat exchanger is due to advantages such as it are simple and reliable for structure, heat exchange efficiency is high, pressure drop is little at present, instead of traditional arch plate type heat exchanger in many occasions.Slotted eye is indulged stream heat exchanger and is classified by slotted eye shape, and difform slotted eye represents the slotted eye longitudinal-flow heat exchanger of different types, such as blossom type orifice plate slotted eye heat exchanger, rectangular opening board slot hole heat exchanger.But there is not researcher sight to be placed in above hole slot.And we pass through experiment it was also found that different hole slots also heat exchanging efficiency can produce tremendous influence.Therefore, it is not only hole shape, indulges stream heat exchanger by change hole slot slotted eye and can also obtain the lifting of bigger heat exchange efficiency.
Utility model content
The purpose of this utility model provides a kind of heat exchanger effectiveness higher helical groove hole sheet heat exchanger and heat-exchange method thereof.
A kind of helical groove hole sheet heat exchanger, including shell side bobbin carriage, is provided with helicla flute orifice plate in shell side bobbin carriage, and heat exchanger tube is installed on the center of the slotted eye of slot orifice plate；The two ends of heat exchanger tube are connected with the first tube side bobbin carriage, the second tube side bobbin carriage respectively；It is characterized in that: the crest line of the slotted eye of above-mentioned slot orifice plate is spiral type crest line；According to the design parameter claimed range of heat exchanger, select the wavelength of spiral type crest line, it is then determined that the thickness of frid；The thickness of helicla flute orifice plate thickness as far as possible, but less than the 1/4 of above-mentioned spiral type crest line wavelength.The design parameter of heat exchanger specifically includes the heat transfer coefficient within heat exchanger, heat exchange area, pressure degradation parameter.
The heat-exchange method of described helical groove hole sheet heat exchanger, it is characterised in that include procedure below: tube side fluid is entered by the entrance of the first tube side bobbin carriage, the outlet of the second tube side bobbin carriage discharge；And shell-side fluid is flowed into by bobbin carriage entrance, shell-side fluid is through slot orifice plate, owing to slotted eye crest line is spiral type crest line, so producing multiply high-speed screw jet, carries out heat exchange with tube side fluid, after flow out through bobbin carriage outlet.
Described helical groove hole sheet heat exchanger, it is characterised in that: the slotted eye profile on above-mentioned slot orifice plate is quincunx, or rectangle, or star.
This utility model reasonable in design, novel in appearance, it is simple to produce, there is good heat-exchange capacity, improve heat exchanger effectiveness, can be widely applied to the field such as chemical industry, aviation.
Accompanying drawing explanation
Fig. 1 is positive two side views of this heat exchanger；
Fig. 2 is the slot orifice plate view of this heat exchanger；
Fig. 3 is when Reynolds number is 5000, and helix wavelength is the flow field motion pattern of the helical groove hole sheet heat exchanger of 60mm；
Fig. 4 is when Reynolds number is 5000, and helix wavelength is the flow field motion pattern of the traditional slot Perforated-Plate Heat Exchangers of 60mm；
Fig. 5 is that under different helicla flute helix wavelength, the convection transfer rate of shell-side fluid is with the change curve of Reynolds number；
Fig. 6 is helicla flute helix wavelength when being 60mm, and under the different-thickness of helicla flute orifice plate, the convection transfer rate of shell-side fluid and pressure drop are with the change curve of Reynolds number；
Fig. 7 is Re number when being 5000, and orifice plate thickness is 3mm and 8mm flow field comparison diagram at same position；
Label title in figure: 1. the first tube side bobbin carriage, 2. heat exchanger tube, 3. helicla flute orifice plate, 4. shell side bobbin carriage, 5. the second tube side bobbin carriage.
Detailed description of the invention
As it can be seen, in order to solve the problem existing for background technology, this utility model is by the following technical solutions: it is that bobbin carriage forms by flange, bearing, avris bobbin carriage, heat exchanger tube, helicla flute orifice plate；Tube side fluid is entered by avris bobbin carriage 1, avris bobbin carriage 2 discharge, and shell-side fluid is flowed into by bobbin carriage entrance, carries out heat exchange with the tube side fluid in heat exchanger tube, and flows through multiple helicla flute orifice plate and strengthen disturbance, and heat transfer effect strengthens, after flow out through housing outlets.Described big bobbin carriage uses stainless steel to make, and has the effect of wear resistant corrosion resistant.
Experimental verification
The method of Numerical Experiment is a kind of more ripe Study of Fluid flowing and the method for heat transfer, and the performance that many research institutions all use Numerical Experiment to carry out heat exchanger carries out comparison.By the method for Numerical Experiment, the helical groove hole sheet heat exchanger that checking obtains, compare traditional slot orifice plate heat exchanger and there is stronger heat transfer effect.Under conditions of holding heat exchanger inlet temperature and heat exchanger tube wall temperature are constant, simulate shell fluid flow and the heat exchange of two type heat exchangers under five groups of difference shell side Reynolds numbers.For the ease of being simulated solving, heat exchanger model boundary condition has carried out suitable simplification.Model Inlet is speed import, and temperature is 360K.Outlet is set as that pressure export, outlet gauge pressure are 0Pa, reference pressure 1atm.Heat exchanger tube outside wall surface temperature is the smooth static wall of constant temperature of 300K, and remaining wall is all set as the smooth static wall of thermal insulation.
Obtain result as shown in Figure 3,4.Fig. 3 Fig. 4 is respectively when Reynolds number is 5000, and helix wavelength is the helical groove hole sheet heat exchanger flow field motion pattern with traditional slot Perforated-Plate Heat Exchangers of 60mm.Being compared by two figures it can be seen that at slotted eye owing to flow area reduces suddenly, rate of flow of fluid increases, produce jet effect, jet erosion heat exchange tube wall destroys boundary region, strengthens shell side heat exchange.And due to the guide functions of helical flow path, the fluid entirety in the region between two orifice plates flows in the shape of a spiral, and helical flow can produce the centrifugal force acting on fluid.The change velocity attitude in cycle under the influence of centrifugal force, thus strengthen the longitudinal direction mixing of fluid, also shell side heat exchange is also functioned to invigoration effect.
Fig. 5 is that under different helicla flute helix wavelength, the convection transfer rate of shell-side fluid is with the change curve of Reynolds number.Slot orifice plate thickness now is 8mm.As seen from the figure, along with the reduction of helicla flute helix wavelength, the Average convection coefficient under identical Reynolds number all has increase；When Reynolds number is 2000, when helix wavelength is 60mm with 80mm, heat exchanger Average convection coefficient differs 6.75%, and helix wavelength is that the heat exchanger Average convection coefficient of 80mm and 120mm differs 6.51%；When Reynolds number is 20000, when helix wavelength is 60mm with 80mm, heat exchanger Average convection coefficient differs 6.81%, and helix wavelength is that the heat exchanger Average convection coefficient of 80mm and 120mm differs 6.86%.
When during Fig. 6, helicla flute helix wavelength is 60mm, under the different-thickness of helicla flute orifice plate, the convection transfer rate of shell-side fluid and pressure drop are with the change curve of Reynolds number.Along with the thickness of helicla flute orifice plate increases, the convection transfer rate of shell-side fluid increases, but pressure drop simultaneously also can increase.This is owing to the thickness along with helicla flute orifice plate increases, the resistance acting that fluid is subject in helical groove hole is more, energy loss is more, thus pressure drop increases, and then causing fluid velocity to reduce, the axial velocity of fluid reduces, so flow field streamline is more closely knit, disturbance is more strong, so the convection transfer rate of shell-side fluid is higher.As it is shown in fig. 7, Fig. 7 is Re number when being 5000, orifice plate thickness is 3mm and 8mm flow field comparison diagram at same position.So in the range of pressure drop allows, thicker helicla flute orifice plate should be selected.But due to material cost reason, selected helical groove hole plate thickness does not typically exceed the 1/4 of slotted eye crest line wavelength.
Claims (2)
1. a helical groove hole sheet heat exchanger, including shell side bobbin carriage (4), is provided with helicla flute orifice plate (3) in shell side bobbin carriage (4), and heat exchanger tube (2) is installed on the center of the slotted eye of slot orifice plate (3)；The two ends of heat exchanger tube (2) are connected with the first tube side bobbin carriage (1), the second tube side bobbin carriage (5) respectively；
It is characterized in that:
The crest line of the slotted eye of above-mentioned slot orifice plate (3) is spiral type crest line；According to the design parameter claimed range of heat exchanger, select the wavelength of spiral type crest line, it is then determined that the thickness of frid；The thickness of helicla flute orifice plate (3) thickness as far as possible, but less than the 1/4 of above-mentioned spiral type crest line wavelength.
Helical groove hole sheet heat exchanger the most according to claim 1, it is characterised in that: the slotted eye profile on above-mentioned slot orifice plate is quincunx, or rectangle, or star.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170610.0U CN205537281U (en) | 2016-03-07 | 2016-03-07 | Helicla flute orifice plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170610.0U CN205537281U (en) | 2016-03-07 | 2016-03-07 | Helicla flute orifice plate heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205537281U true CN205537281U (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620170610.0U Withdrawn - After Issue CN205537281U (en) | 2016-03-07 | 2016-03-07 | Helicla flute orifice plate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205537281U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737650A (en) * | 2016-03-07 | 2016-07-06 | 南京航空航天大学 | Spirally slotted hole plate heat exchanger and heat exchange method thereof |
| CN108955319A (en) * | 2018-09-25 | 2018-12-07 | 江苏远卓设备制造有限公司 | A kind of box-type heat exchanger |
-
2016
- 2016-03-07 CN CN201620170610.0U patent/CN205537281U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737650A (en) * | 2016-03-07 | 2016-07-06 | 南京航空航天大学 | Spirally slotted hole plate heat exchanger and heat exchange method thereof |
| CN105737650B (en) * | 2016-03-07 | 2017-07-11 | 南京航空航天大学 | Helical groove hole sheet heat exchanger and its heat-exchange method |
| CN108955319A (en) * | 2018-09-25 | 2018-12-07 | 江苏远卓设备制造有限公司 | A kind of box-type heat exchanger |
| CN108955319B (en) * | 2018-09-25 | 2023-12-15 | 江苏远卓设备制造有限公司 | Box type heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20170711 |
|
| AV01 | Patent right actively abandoned |