CN102374551A - Heat transmission element structure for air preheater - Google Patents
Heat transmission element structure for air preheater Download PDFInfo
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- CN102374551A CN102374551A CN2011104109387A CN201110410938A CN102374551A CN 102374551 A CN102374551 A CN 102374551A CN 2011104109387 A CN2011104109387 A CN 2011104109387A CN 201110410938 A CN201110410938 A CN 201110410938A CN 102374551 A CN102374551 A CN 102374551A
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- Prior art keywords
- ripple
- air preheater
- heat
- element structure
- corrugated plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Abstract
The invention provides a heat transmission element structure for an air preheater, comprising a first corrugated plate and a second corrugated plate, wherein a first inclined corrugation and a through groove are formed on the first corrugated plate, and second inclined ripples are formed on the second corrugated plate. The heat transmission element structure is characterized in that the first corrugated plate and the second corrugated plate are crossed in direction, and shallow wave-shaped ripples are distributed on the through groove. The heat transmission element structure has the advantages that: 1. the corrugated plate with the wave-shaped through groove has larger contact area with liquid than the traditional corrugated plate with a linear through groove, the heat exchange performance is met, and meanwhile, part of heat exchange surface can be reduced, and the aims of saving materials and reducing the cost of the air preheater can be achieved; and 2. The heat exchange efficiency of a heat transmission element can be enhanced, the temperature of liquid at the outlet of the air preheater can be reduced, and the aims of reducing the cost, increasing the efficiency, saving the energy and reducing the emission can be achieved.
Description
Technical field
The present invention relates to a kind of rotary regenerative air preheater heat transfer element; This heat transfer element is heated after contacting through the heat-exchange fluid with high temperature; Taken subsequently with the contact of the heat-exchange fluid of low temperature and with the heat-exchange fluid of this low temperature of heat transferred, reached the purpose that reclaims heat through heat exchange.
Background technology
Heat transfer element is the core component of rotary regenerative air preheater.It mainly acts on is to absorb the used heat that the boiler leading portion is discharged, and heats the air that is used for boiler combustion and coal dust conveying.Heat transfer element is finally formed surface area and is reached tens thousand of steel sheet to more than 10 ten thousand square metres, and the steel sheet surface rolling goes out bellows-shaped, and corrugated surface is divided into enhanced heat exchange district and ash discharge channel slot.These heat transfer element sheets are by the machine-shaping of corrugated plating production line; The heat transfer element basket framework of packing into is placed in the preheater rotor, when equipment moves; With rotor rotation; Suck heat at high temperature side (fume side), release heat when forwarding low temperature side (air side) again to reaches the purpose that heat transmits.
In the prior art, the heat transfer element that is used for air preheater is divided into NF series, CU series usually, DU is serial and DN is serial, and these heat transfer elements all are made up of a lot of paired steel sheet.
DU series heat transfer element has DU waveform and DU3 waveform, and structure is identical between the two, and its difference is that the height of ripple is different.Like Fig. 1 and shown in Figure 2, its corrugated plating by two folds is formed, and corrugated plating 1 has corrugated oblique ripple 3 and smooth straight channel groove 4, has only oblique ripple 5 on the corrugated plating 2.Oblique ripple 3 is consistent with oblique ripple 5 directions, and promptly the formed angle of the two ripple is 0 °.Corrugated plating 1 is processed oblique ripple 3 with rolling rolling earlier, and then is rolled rolling with another and make straight channel groove 4, be i.e. the ash discharge channel slot through twice roll forming.Because the ash discharge channel slot of this heat transfer element is smooth from top to bottom linear pattern, the few resistance of contact-making surface was little when heat-exchange fluid passed through, but had also therefore lost the heat of a part of heat-exchange fluid.
Summary of the invention
The purpose of this invention is to provide a kind of ash discharge well, again the heat transfer element structure of absorption fluids heat more.
In order to achieve the above object; Technical scheme of the present invention has provided a kind of air preheater and has used the heat transfer element structure; Comprise first corrugated plating and second corrugated plating, on first corrugated plating, be formed with the first inclination ripple and straight channel groove, on second corrugated plating, be formed with the second inclination ripple; It is characterized in that: the first inclination ripple and the second inclination ripple are on direction and intersect distribution, on the straight channel groove, are distributed with shallow waveform ripple.
Preferably, the longitudinal section of said straight channel groove is the curve with a crest and a trough, and said shallow waveform corrugation rows is listed in crest and place, trough position.
Preferably, the spacing between adjacent two said shallow waveform ripples is 10mm-300mm.
Preferably, said shallow waveform ripple is a circular arc, and the degree of depth is 3mm-6mm, and top radius is 3mm-6mm.
Advantage of the present invention is: 1, adopt this undaform straight channel slot wave card; Contact area than the straight channel slot wave card of traditional line type and fluid is big; When satisfying heat exchange property, can reduce the part heat-transfer surface, reach economical with materials, reduce the purpose of air preheater cost.2, can the enhanced heat transfer component heat exchange efficiency, reduce the outlet fluid temperature (F.T.) of air preheater, reach cost efficiency, the order ground of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is a DU series heat transfer element structural representation of the prior art;
Fig. 2 is a DU series heat transfer element ripple sketch map of the prior art;
Fig. 3 is the sketch map of a kind of air preheater provided by the invention with the heat transfer element structure;
Fig. 4 is the ripple sketch map of a kind of air preheater provided by the invention with the heat transfer element structure;
Fig. 5 is the detailed package assembly sketch map of a kind of air preheater provided by the invention with the heat transfer element structure.
The specific embodiment
For making the present invention more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
As shown in Figure 3, a kind of air preheater provided by the invention is used the heat transfer element structure, comprises that its structural diagrams intention of 7, two corrugated plating assemblings of first corrugated plating 6 and second corrugated plating back is as shown in Figure 4.First corrugated plating 6 contains the first inclination ripple 8 and contains the second inclination ripple 10 with 7 of straight channel groove 9, the second corrugated platings.Wherein, the first inclination ripple 8 and the second inclination ripple 10 are the intersection layout on direction.The longitudinal section of straight channel groove 9 is the curve with a crest and a trough.What need to specify is, as shown in Figure 5, on straight channel groove 9, is distributed with shallow waveform ripple 11, and shallow waveform ripple 11 is arranged in crest and place, trough position.Shallow waveform ripple 11 is every on straight channel groove 9 arranges one at a distance from 200mm.Shallow waveform ripple 11 is a circular arc, and its degree of depth is 3mm～6mm, and top radius is 6mm.
The present invention is smooth linear straight channel groove be designed to the to distribute ash discharge channel slot of shallow waveform ripple 11, produces certain resistance at heat-exchange fluid during through the ash discharge channel slot, influences the speed that heat-exchange fluid passes through.Compare with the straight channel groove that does not have shallow distribution waveform ripple 11; Shallow waveform ripple 11 has increased the contact area of corrugated plating and heat-exchange fluid greatly, can absorb the heat of heat-exchange fluid more, thereby improves heat transfer element efficient; Reduce the part heating surface, reach the purpose of saving material.
The first inclination ripple as if on two corrugated platings is identical with the incline direction of the second inclination ripple; Then heat-exchange fluid (flue gas) can more smoothly and quickly through hot side (corrugated plating), it be insufficient to cause thermal source (flue gas) and hot side (wave-wave card) to exchange.The present invention is the intersection layout with the first inclination ripple 8 and the second inclination ripple 10 on direction, can suitably increase the resistance that flue gas passes through, and has increased the path of flue gas trend; Flue gas and hot side increase time of contact; Can absorb the heat of heat-exchange fluid more, promptly increase the contact area of flue gas and corrugated plating, flue gas and hot side are fully exchanged; Thereby improved the efficient of heat transfer element, reached the purpose of economical with materials.
Claims (4)
1. an air preheater is used the heat transfer element structure; Comprise first corrugated plating (6) and second corrugated plating (7); On first corrugated plating (6), be formed with the first inclination ripple (8) and straight channel groove (9); On second corrugated plating (7), be formed with the second inclination ripple (10), it is characterized in that: the first inclination ripple (8) and the second inclination ripple (10) are on direction and intersect distribution, on straight channel groove (9), are distributed with shallow waveform ripple (11).
2. a kind of air preheater as claimed in claim 1 is used the heat transfer element structure; It is characterized in that: the longitudinal section of said straight channel groove (9) is the curve with a crest and a trough, and said shallow waveform ripple (11) is arranged in crest and place, trough position.
3. according to claim 1 or claim 2 a kind of air preheater is used the heat transfer element structure, and it is characterized in that: the spacing between adjacent two said shallow waveform ripples (11) is 10mm-300mm.
4. according to claim 1 or claim 2 a kind of air preheater is used the heat transfer element structure, it is characterized in that: said shallow waveform ripple (11) is circular arc, and the degree of depth is 3mm-6mm, and top radius is 3mm-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104109387A CN102374551A (en) | 2011-12-12 | 2011-12-12 | Heat transmission element structure for air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104109387A CN102374551A (en) | 2011-12-12 | 2011-12-12 | Heat transmission element structure for air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102374551A true CN102374551A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104109387A Pending CN102374551A (en) | 2011-12-12 | 2011-12-12 | Heat transmission element structure for air preheater |
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| CN (1) | CN102374551A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457381A (en) * | 2014-12-30 | 2015-03-25 | 上海锅炉厂有限公司 | Inclined wavy corrugated plate |
| CN109282301A (en) * | 2018-09-27 | 2019-01-29 | 上海双木散热器制造有限公司 | Anti-corrosive properties waste incineration and generating electricity fluoroplastics air preheater |
Citations (7)
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|---|---|---|---|---|
| JPH09280761A (en) * | 1996-04-09 | 1997-10-31 | Abb Kk | Heat exchanger having laminated body of heat transfer element prate |
| CN1260036A (en) * | 1997-06-13 | 2000-07-12 | Abb·空气预热器有限公司 | Air preheater heat transfer elements and method for mfg. same |
| CN1330763A (en) * | 1998-12-16 | 2002-01-09 | 阿尔斯托姆电力公司 | Heat transfer element assembly |
| CN101031768A (en) * | 2005-07-29 | 2007-09-05 | 豪顿英国有限公司 | A heating surface element |
| CN201348461Y (en) * | 2008-12-17 | 2009-11-18 | 哈尔滨锅炉厂有限责任公司 | Heat transfer element plate profile of rotary air preheater for boilers |
| CN201402089Y (en) * | 2009-04-21 | 2010-02-10 | 东方锅炉（集团）股份有限公司 | High efficient heat exchange element plate of utility boiler |
| CN202032932U (en) * | 2010-12-10 | 2011-11-09 | 上海锅炉厂有限公司 | Wave type corrugated plate with ash-discharging groove and press molding rack on roller of corrugated plate |
-
2011
- 2011-12-12 CN CN2011104109387A patent/CN102374551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09280761A (en) * | 1996-04-09 | 1997-10-31 | Abb Kk | Heat exchanger having laminated body of heat transfer element prate |
| CN1260036A (en) * | 1997-06-13 | 2000-07-12 | Abb·空气预热器有限公司 | Air preheater heat transfer elements and method for mfg. same |
| CN1330763A (en) * | 1998-12-16 | 2002-01-09 | 阿尔斯托姆电力公司 | Heat transfer element assembly |
| CN101031768A (en) * | 2005-07-29 | 2007-09-05 | 豪顿英国有限公司 | A heating surface element |
| CN201348461Y (en) * | 2008-12-17 | 2009-11-18 | 哈尔滨锅炉厂有限责任公司 | Heat transfer element plate profile of rotary air preheater for boilers |
| CN201402089Y (en) * | 2009-04-21 | 2010-02-10 | 东方锅炉（集团）股份有限公司 | High efficient heat exchange element plate of utility boiler |
| CN202032932U (en) * | 2010-12-10 | 2011-11-09 | 上海锅炉厂有限公司 | Wave type corrugated plate with ash-discharging groove and press molding rack on roller of corrugated plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457381A (en) * | 2014-12-30 | 2015-03-25 | 上海锅炉厂有限公司 | Inclined wavy corrugated plate |
| CN104457381B (en) * | 2014-12-30 | 2017-03-15 | 上海锅炉厂有限公司 | A kind of oblique wave wave type corrugated plating |
| CN109282301A (en) * | 2018-09-27 | 2019-01-29 | 上海双木散热器制造有限公司 | Anti-corrosive properties waste incineration and generating electricity fluoroplastics air preheater |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20120314 |