CN107246813A - Tubular heat exchange device - Google Patents
Tubular heat exchange device Download PDFInfo
- Publication number
- CN107246813A CN107246813A CN201710424281.7A CN201710424281A CN107246813A CN 107246813 A CN107246813 A CN 107246813A CN 201710424281 A CN201710424281 A CN 201710424281A CN 107246813 A CN107246813 A CN 107246813A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- heat exchanger
- exchanger tube
- flow passage
- tube
- Prior art date
- 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- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
- F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
- F28F2009/228—Oblique partitions
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to field of heat exchange equipment, more particularly to tubular heat exchange device.Tubular heat exchange device includes housing and the heat exchanger tube being arranged in housing, there is heat exchange inner flow passage in heat exchanger tube, there is heat exchange outer flow passage outside heat exchanger tube, heat exchanger tube is arranged in juxtaposition and is surrounded by screw type outer flow passage, screw type outer flow passage constitutes the heat exchange outer flow passage, screw type outer flow passage has datum line, screw type outer flow passage is bent with datum line to be extended, the datum line is circular helix, heat exchanger tube is spiral heat exchange tube, the central axis of spiral heat exchange tube is circular helix, or heat exchanger tube is wavy heat exchanger tube, the central axis of wavy heat exchanger tube is wave.During use, set of heat exchange tubes into screw type outer flow passage guide functions under, fluid outside heat exchanger tube can be well mixed, and obtain larger turbulivity, solve the heat exchange outer flow passage of current heat-exchanger rig the small heat transfer effect that causes of turbulivity it is poor the problem of.
Description
Technical field
The present invention relates to field of heat exchange equipment, more particularly to tubular heat exchange device.
Background technology
The need for saving, heat exchanger is commonly used in industrial production, common recuperative heat exchanger in engineering
Including pipe heat exchanger, plate type heat exchanger, double pipe heat exchanger, rib-pipe type heat exchanger, but common dividing wall type heat exchanger
The fluid turbulent degree of partition both sides is small, and the temperature difference of partition both sides is small, and heat transfer effect is poor.
It is a kind of vertical that such as publication No. is that the Chinese patent application that CN102564168A, date of publication are 2012.07.11 is disclosed
To flowing shell-and-tube heat exchanger, shell-and-tube heat exchanger is a kind of pipe heat exchanger, including housing, left and right tube sheet, left and right end socket, shell
Body sidewall, which has, is respectively equipped with left and right tube sheet in shell side import and export, housing, many heat-transfer pipes are fixed by left and right tube sheet, shell
Body two ends are closed by left and right end socket respectively, respectively there is tube side to import and export on left and right end socket, and heat-transfer pipe is helical form heat-transfer pipe,
On shell-side fluid flow direction, contacting in contact point and housing of the heat-transfer pipe of inner walls by adjacent heat-transfer pipe
Wall contact point is supported, and other heat-transfer pipes are mutually supported and fixed by the contact point of adjacent heat-transfer pipe, and heat-transfer pipe is interbank
Contact point increases carry mobility of the fluid in shell fluid flow, and fluid is well mixed, and shell side, which is kept a situation well under one's control, to be substantially reduced, and improves synthesis and changes
Hot property, but having in the heat exchanger tube of this heat exchanger has heat exchange outer flow passage, this heat exchange outside heat exchange inner flow passage, heat exchanger tube
Turbulivity is small outside the heat exchanger tube of device, mixes uneven, and the fluid outside heat exchanger tube can not be realized good with the fluid in heat exchanger tube
Heat exchange, causes the problem of heat transfer effect is poor.
The content of the invention
It is an object of the invention to provide a kind of tubular heat exchange device, to solve the heat exchange outer flow passage of current heat-exchanger rig
The problem of small heat transfer effect caused of turbulivity is poor.
To achieve the above object, the first technical scheme of tubular heat exchange device of the invention is：Tubular heat exchange device bag
Include in heat exchanger tube, heat exchanger tube to have and there is heat exchange outer flow passage outside heat exchange inner flow passage, heat exchanger tube, described heat exchanger tube is arranged in juxtaposition simultaneously
Screw type outer flow passage is surrounded by, the screw type outer flow passage constitutes the heat exchange outer flow passage, and the screw type outer flow passage has base
Directrix, screw type outer flow passage is bent with datum line to be extended, and the datum line is circular helix, and the heat exchanger tube changes for helical form
Heat pipe, the central axis of spiral heat exchange tube is circular helix, or the heat exchanger tube is wavy heat exchanger tube, wavy to change
The central axis of heat pipe is wave.
Second of technical scheme of tubular heat exchange device of the present invention be：In the first of the tubular heat exchange device of the present invention
On the basis of technical scheme, the spiral heat exchange tube surrounds screw type compound tube, and the central axis of screw type compound tube is circle
Post helix, the fluid passage that screw type compound tube is surrounded constitutes the screw type outer flow passage.
The third technical scheme of tubular heat exchange device of the present invention is：In the first of the tubular heat exchange device of the present invention
On the basis of technical scheme, the heat exchanger tube is arranged in juxtaposition and is surrounded by spiral type groove, the fluid in the spiral type groove
Passage constitutes the screw type outer flow passage.
The 4th kind of technical scheme of tubular heat exchange device of the present invention be：In the first of the tubular heat exchange device of the present invention
On the basis of technical scheme, the heat exchanger tube is provided with least two groups, and same group of heat exchanger tube is arranged in juxtaposition that to be surrounded by screw type recessed
Groove, at least two groups heat exchanger tubes are stacked, and the notch pairing of the spiral type groove of two be stacked group heat exchanger tube is to enclose
Into the screw type outer flow passage.
The 5th kind of technical scheme of tubular heat exchange device of the present invention be：In the third of the tubular heat exchange device of the present invention
Or on the basis of the 4th kind of technical scheme, the heat exchanger tube is wavy heat exchanger tube, the central shaft of the wavy heat exchanger tube
Line is sinusoidal line or cosine line.
The 6th kind of technical scheme of tubular heat exchange device of the present invention be：At the 5th kind of the tubular heat exchange device of the present invention
On the basis of technical scheme, the wavy heat exchanger tube is arranged in juxtaposition and end is according to circular helix arranged in tracks.
The 7th kind of technical scheme of tubular heat exchange device of the present invention be：In the third of the tubular heat exchange device of the present invention
Or on the basis of the 4th kind of technical scheme, the heat exchanger tube is spiral heat exchange tube, the spiral for surrounding spiral type groove
The section of shape heat exchanger tube is distributed in the tracks of line voltage.
The 8th kind of technical scheme of tubular heat exchange device of the present invention be：In the first of the tubular heat exchange device of the present invention
Into the 4th kind on the basis of any one technical scheme, there is good antiscale property gap between two heat exchanger tubes arranged side by side.
Beneficial effects of the present invention are：The tubular heat exchange device of the present invention, heat exchanger tube is arranged in juxtaposition and is surrounded by screw type
Outer flow passage, screw type outer flow passage constitutes the heat exchange outer flow passage outside heat exchanger tube, and the datum line of screw type outer flow passage is circular helix,
Screw type outer flow passage with datum line bend extend, during use, set of heat exchange tubes into screw type outer flow passage guide functions
Under, the fluid outside heat exchanger tube can be well mixed, and obtain larger turbulivity, solve changing for current heat-exchanger rig
The problem of small heat transfer effect caused of the turbulivity of hot outer flow passage is poor.
Brief description of the drawings
Fig. 1 is the structural representation of the specific embodiment 1 of the tubular heat exchange device of the present invention；
Fig. 2 is the structural representation of the specific embodiment 1 of the tubular heat exchange device of the present invention；
Fig. 3 is the schematic diagram of the circular helix of the specific embodiment 1 of the tubular heat exchange device of the present invention；
Fig. 4 is the structural representation of the specific embodiment 2 of the tubular heat exchange device of the present invention；
Fig. 5 is the structural representation of the specific embodiment 5 of the tubular heat exchange device of the present invention.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the tubular heat exchange device of the present invention, as depicted in figs. 1 and 2, tubular heat exchange device include housing
1 and the spiral heat exchange tube 2 that is arranged in housing 1.The central axis of spiral heat exchange tube 2 is circular helix 10, such as Fig. 3 institutes
It is shown as the schematic diagram of circular helix 10.Having in spiral heat exchange tube 2 outside heat exchange inner flow passage 21, spiral heat exchange tube 2 has
Exchange heat outer flow passage.
Spiral heat exchange tube 2 in the present embodiment is provided with multigroup, and specific quantity can increase and decrease as needed.Same group
Spiral heat exchange tube 2 is arranged in juxtaposition and is surrounded by spiral type groove 4, the present embodiment, and same group of spiral heat exchange tube 2 is in ripple
Wave-like is arranged in juxtaposition, and is spiral type groove 4 between two neighboring crest.In order to improve the fixing intensity of spiral heat exchange tube, together
In the more preferable heat transfer effects of Shi Shixian, the present embodiment, direction of each group spiral heat exchange tube 2 along setting is stacked successively,
The notch of the spiral type groove 4 for two groups of spiral heat exchange tubes being stacked is to being encircled into outside screw type outer flow passage 3, screw type
Runner 3 constitutes heat exchange outer flow passage.
In the present embodiment, the section of same group of spiral heat exchange tube is distributed in the tracks of line voltage, each spiral heat exchange tube 2
It is fixed together by tube sheet 6.Screw type outer flow passage 3 has datum line, and screw type outer flow passage 3 is bent with datum line to be extended, base
Directrix is circular helix.
Screw type outer flow passage 3 in the present embodiment is to be stayed between the runner of relative closure, same group of spiral heat exchange tube 2
Have and form certain transmission ability between less good antiscale property gap, adjoining spiral type outer flow passage.Runner of the fluid in screw type
There is larger centrifugal force during interior flowing, while very strong souring can be formed to the side wall of runner, under this principle,
, can be effectively by the heavy of gap location while gap location is realized and exchanged heat in screw type outer flow passage in the flow process of fluid
Product thing is taken away, and is difficult in gap location fouling, in addition, good antiscale property gap also helps the thermal expansion deformation position of spiral heat exchange tube
Move.
The tubular heat exchange device of the present invention is used for steam-water heat exchanging, as shown in figure 1, the runner in spiral heat exchange tube 2 is to change
Hot inner flow passage 21, the runner outside spiral heat exchange tube is that screw type outer flow passage 3 constitutes heat exchange outer flow passage, and heat exchange inner flow passage leads to
Water to be heated, end sets fluid chamber 5, fluid turnover heat exchange inner flow passage.Heat exchange outer flow passage is passed through the steam of heating, heat exchange
Inner flow passage, heat exchange outer flow passage counter-flow arrangement, outlet sets draining valve.For simplicity, helical form is instead of in Fig. 1 with rectangle to change
Heat pipe.The device can be used for the fluid that inner flow passage is high pressure that exchanges heat, the high-pressure heater of such as thermal power generation, low-pressure heater,
Gland heater etc..In other embodiment, heat exchange inner flow passage, heat exchange outer flow passage can also be arranged in the same direction.
The specific embodiment 2 of the tubular heat exchange device of the present invention, tubular heat exchange device in the present embodiment with it is above-mentioned specific
Tubular heat exchange device described in embodiment 1 is differed only in：As shown in figure 4, same group of spiral heat exchange tube 20 is in ripple
Wave-like is arranged in juxtaposition, and the parallel interval of two adjacent groups spiral heat exchange tube 20 is set.The now spiral type groove between two crests
Fluid passage in 40 constitutes the screw type outer flow passage 30 of tubular heat exchange device.
The specific embodiment 3 of the tubular heat exchange device of the present invention, tubular heat exchange device in the present embodiment with it is above-mentioned specific
Tubular heat exchange device described in embodiment 1 is differed only in：Same group of spiral heat exchange tube surrounds edge in the present embodiment
The screw type compound tube of spiral heat exchange tube central axis extension, the fluid passage that screw type compound tube is surrounded constitutes pipe type heat transfer
The screw type outer flow passage of device, the central axis of screw type compound tube is circular helix.Section of screw type compound tube herein
Face is circular, and in other embodiment, the section of screw type compound tube can be the other shapes such as ellipse, quadrangle.
The specific embodiment 4 of the tubular heat exchange device of the present invention, tubular heat exchange device in the present embodiment with it is above-mentioned specific
Tubular heat exchange device described in embodiment 1 is differed only in：The tubular heat exchange device of the present invention makes as air heat exchanger
With can be used for the manufacturing enterprises such as thermal power plant, for heating the heat transferring mediums such as empty gas and water, save the energy.
The present invention tubular heat exchange device arrangement spiral heat exchange tube, by by spiral heat exchange tube according to definite shape cloth
Put, be that spiral heat exchange tube surrounds screw type outer flow passage.Cause runner elongated using spiral heat exchange tube runner, flue gas flow rate adds
It hurry up, with very strong flow-disturbing ability and carrying flue dust ability, it is not easy to deposit；The air-flow of rotation has for water passage surface to be compared
Strong souring, it is not easy to fouling, device has very strong automatical cleaning ability.
For convenience of repair and maintenance, heat exchanger can be divided into high-temperature section heat exchanger and low-temperature zone heat exchanger, cloth of separately connecting
Put.When low-temperature zone heat exchanger seriously corroded, can directly it change.To reduce the fouling phenomenon of heat exchanger low-temperature zone, heat exchanger is low
The heat exchange inner flow passage caliber of temperature section can select smaller, improve flue gas flow rate, improve souring of the flue gas to dust stratification incrustation,
Improve flue gas and carry flue dust ability.Surface-type can be disposed with heat exchanger high temperature section part, the surface of spiral heat exchange tube
Denitrating catalyst, when high-temperature flue gas by when, the nitrogen oxides in the ammonia and flue gas escaped in SCR denitration device can continue
Mass transfer reaction occurs under the high temperature conditions, the denitration efficiency of system is on the one hand improved, the escaping of ammonia is reduced, meanwhile, help to reduce
The growing amount of ammonium hydrogen sulfate, mitigates heat exchanger low-temperature zone ammonium hydrogen sulfate deposition and dust stratification probability.
Compared with the swinging air heat exchanger that coal-burning power plant is used, air heat exchanger does not have swinging described in the present embodiment
Mechanism, all parts are static state, do not have sound friction problem, failure rate of machinery is low；Air leakage phenomena is not present in cold wind and hot-air chamber,
There is no sealing problem between sound；Heat exchanger has stronger automatical cleaning ability, and heat exchanger outer flow passage surface is difficult dust stratification；For
The ammonium hydrogen sulfate problem of the escaping of ammonia formation after denitrification apparatus, it is not easy to deposit, cleans even if deposition also easy soot blowing, can compare
Reluctant the escaping of ammonia when denitration efficiency is high is preferably solved the problems, such as, the situation of catalyst is disposed with heat exchanger high temperature section
Under, the denitration efficiency of whole system can be further improved, the feelings being remarkably decreased when the escaping of ammonia for the influence of air heat exchanger
Under condition, the denitration efficiency of SCR denitration device can be moderately improved, depth denitration is realized, the ammonia of escape is in dedusting, desulfurization stage
It can preferably be absorbed, will not be discharged to flue gas in air.
The specific embodiment 5 of the tubular heat exchange device of the present invention, tubular heat exchange device in the present embodiment with it is above-mentioned specific
Tubular heat exchange device described in embodiment 1 is differed only in：As shown in figure 5, in the present embodiment, heat exchanger tube changes to be wavy
Heat pipe 52, Fig. 5 medium wave wave-like heat exchanger tube 52 replaces simplifying with lines.The central axis of wavy heat exchanger tube 52 is wave, this
In embodiment, the central axis of wavy heat exchanger tube 52 is sinusoidal line, and the wavelength of the corresponding SIN function of central axis is λ2, shake
Width is b, and wavy heat exchanger tube 52 is provided with least two groups, and same group of wavy heat exchanger tube is arranged in juxtaposition and surrounds spiral type groove
54.The specification of same group of wavy heat exchanger tube of the tubular heat exchange device in the present embodiment is identical, same group of wavy heat exchanger tube
End in circular helix arrange.The notch pairing back wall for the spiral type groove 54 that the wavy heat exchanger tube of two adjacent groups is surrounded into
Enclosed screw type outer flow passage.The specification of same group of wavy heat exchanger tube of the tubular heat exchange device in the present embodiment is identical,
The end of same group of wavy heat exchanger tube is arranged in circular helix.Flowed in heat exchange in the present embodiment medium wave wave-like heat exchanger tube 52
Road is in arranged crosswise with the heat exchange outer flow passage outside wavy heat exchanger tube, that is, the spiral shell that the inner flow passage that exchanges heat is surrounded with wavy heat exchanger tube 52
Rotation type outer flow passage arranged crosswise.
In the other embodiment of the tubular heat exchange device of the present invention, tubular heat exchange device is also used as one kind and utilizes air
The steam condenser of forcing functions low temperature and low pressure steam is used；Above-mentioned spiral heat exchange tube is provided with least one set, same group of spiral shell
Rotation shape heat exchanger tube is arranged in juxtaposition in wavy, section undulate, and the fluid passage between two neighboring crest constitutes described
Screw type outer flow passage；The section for the spiral type groove that above-mentioned spiral heat exchange tube is surrounded can be V-type or U-shaped other shapes of grade
Shape；The central axis of above-mentioned wavy heat exchanger tube can be cosine line, can also be bent in other wavy irregular shapes
Line；Above-mentioned tubular heat exchange device can be not provided with housing, and now heat-exchanger rig is exchanged heat using air.
Claims (8)
1. having in tubular heat exchange device, including heat exchanger tube, heat exchanger tube has heat exchange outer flow passage outside heat exchange inner flow passage, heat exchanger tube,
It is characterized in that：Described heat exchanger tube is arranged in juxtaposition and is surrounded by screw type outer flow passage, and the screw type outer flow passage constitutes described
Exchanged heat outer flow passage, and the screw type outer flow passage has datum line, and screw type outer flow passage is bent with datum line to be extended, the datum line
For circular helix, the heat exchanger tube is spiral heat exchange tube, and the central axis of spiral heat exchange tube is circular helix, or
The heat exchanger tube is wavy heat exchanger tube, and the central axis of wavy heat exchanger tube is wave.
2. tubular heat exchange device according to claim 1, it is characterised in that：The spiral heat exchange tube surrounds screw type group
Pipe is closed, the central axis of screw type compound tube is circular helix, and the fluid passage that screw type compound tube is surrounded constitutes the spiral shell
Rotation type outer flow passage.
3. tubular heat exchange device according to claim 1, it is characterised in that：The heat exchanger tube is arranged in juxtaposition and is surrounded by spiral shell
Fluid passage in rotation type groove, the spiral type groove constitutes the screw type outer flow passage.
4. tubular heat exchange device according to claim 1, it is characterised in that：The heat exchanger tube is same provided with least two groups
The heat exchanger tube of group, which is arranged in juxtaposition, is surrounded by spiral type groove, and at least two groups heat exchanger tubes are stacked, two be stacked group
The notch pairing of the spiral type groove of heat exchanger tube is to surround the screw type outer flow passage.
5. the tubular heat exchange device according to claim 3 or 4, it is characterised in that：The heat exchanger tube is wavy heat exchanger tube,
The central axis of the wavy heat exchanger tube is sinusoidal line or cosine line.
6. tubular heat exchange device according to claim 5, it is characterised in that：The wavy heat exchanger tube is arranged in juxtaposition and held
Portion is according to circular helix arranged in tracks.
7. the tubular heat exchange device according to claim 3 or 4, it is characterised in that：The heat exchanger tube is spiral heat exchange tube,
The section of the spiral heat exchange tube for surrounding spiral type groove is distributed in the tracks of line voltage.
8. the tubular heat exchange device according to claim any one of 1-4, it is characterised in that：Two heat exchanger tubes arranged side by side it
Between have good antiscale property gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424281.7A CN107246813A (en) | 2017-06-07 | 2017-06-07 | Tubular heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424281.7A CN107246813A (en) | 2017-06-07 | 2017-06-07 | Tubular heat exchange device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107246813A true CN107246813A (en) | 2017-10-13 |
Family
ID=60018449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710424281.7A Withdrawn CN107246813A (en) | 2017-06-07 | 2017-06-07 | Tubular heat exchange device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107246813A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922335A (en) * | 2020-05-09 | 2020-11-13 | 同济大学 | Additive manufacturing method of gas-liquid dual-phase heat exchanger |
| CN115235266A (en) * | 2022-07-28 | 2022-10-25 | 江苏焱鑫科技股份有限公司 | Longitudinal fin countercurrent heat exchange tube air preheater |
-
2017
- 2017-06-07 CN CN201710424281.7A patent/CN107246813A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922335A (en) * | 2020-05-09 | 2020-11-13 | 同济大学 | Additive manufacturing method of gas-liquid dual-phase heat exchanger |
| CN111922335B (en) * | 2020-05-09 | 2021-10-08 | 同济大学 | A kind of additive manufacturing method of gas-liquid two-phase heat exchanger |
| CN115235266A (en) * | 2022-07-28 | 2022-10-25 | 江苏焱鑫科技股份有限公司 | Longitudinal fin countercurrent heat exchange tube air preheater |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171013 |
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| WW01 | Invention patent application withdrawn after publication |