CN103175425A - Rotary regenerative heat exchanger - Google Patents
Rotary regenerative heat exchanger Download PDFInfo
- Publication number
- CN103175425A CN103175425A CN201210559980XA CN201210559980A CN103175425A CN 103175425 A CN103175425 A CN 103175425A CN 201210559980X A CN201210559980X A CN 201210559980XA CN 201210559980 A CN201210559980 A CN 201210559980A CN 103175425 A CN103175425 A CN 103175425A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- subregion plate
- rotary regenerative
- memory bank
- regenerative heat
- 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.)
- Granted
Links
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims description 27
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002040 relaxant effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000005338 heat storage Methods 0.000 abstract 3
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
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
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- 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
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
-
- 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
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/047—Sealing means
Landscapes
- 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)
- Air Supply (AREA)
Abstract
A rotary regenerative heat exchanger has a structure in which a rotor accommodating a heat storage body such as a heat transfer element is rotated inside a housing, the heat storage body is heated by means of a high-temperature heating fluid such as exhaust gas and stores the heat, and low-temperature fluid to be heated such as combustion air is heated by the heat stored in the heat storage body; and a sector plate for dividing the flow passages for the abovementioned two kinds of fluids, namely the heating fluid and the fluid to be heated, flowing through the inside of the rotor is provided at the upper end face of the rotor with a slight gap therebetween, and a static seal is disposed on both sides of the gap between the sector plate and the external structure of the heat exchanger, a suction pipe being provided in the external structure in such a way as to suction dust material such as ash which accumulates or is agitated on the sector plate.
Description
Technical field
The present invention relates to rotary regenerative heat exchanger (rotary regenerative heat exchanger).
Background technology
Usually the rotary regenerative heat exchanger that is arranged in generating equipment etc. as the air preheating device has following structure traditionally, namely wherein hold the rotor 1 of hot memory bank 1a (such as heat transfer element) at shell 2 internal rotatings, hot memory bank 1a relies on high-temperature heating fluid G 1 (such as waste gas) heating and storage heat, and cryogen G2 to be heated (such as combustion air) is heated by the heat of storing in hot memory bank 1a, as shown in Figure 3.
As can be obvious from Fig. 4, be provided at subregion plate 3, the 3 ' separation at upper surface and the place, lower surface of rotor 1 for the flow channel dependence of the fluid of above-mentioned two types (namely G1 and G2) that flows through rotor 1 inside, wherein have minim gap between flow channel.
Two kinds of leakages (seepage) produce towards the rotary regenerative heat exchanger of heating fluid G 1 side (it is low-pressure side) in the type from the side (it is the high-pressure side) of fluid G to be heated 2.The first is leaked as directly leaking, and its difference aspect the pressure between two kinds of fluid G 1, G2 causes, and the second leaks the subsidiary leakage for the rotation of following rotor 1.
Sealing mechanism normally provides in the various positions of heat exchanger, in order to prevent direct leakage, and the radial seal parts (it is a kind of such mechanism) at high temperature side comprise the subregion plate 3,3 ' that forms fixation side, and form the radial seal 1b (it is coupled to rotor 1) of rotation side.Especially, upper subregion plate 3 is connected to upper external structure 2 ' via adjusting rod 4, and static seal 5 configures on the both sides in the subregion plate 3 of heat exchanger and the gap between external structure, in order to prevent the direct leakage from the gap S between the upper side of external structure 2 ' and subregion plate 3.
Also have following system, namely wherein static seal 5,5 is configured on the both sides of subregion plate 3, as shown in Figure 5, provides thus middle nip, in order to strengthen the sealing effectiveness in the office, top of subregion plate 3.Further, static seal 5 is comprised of metal sheet.
Summary of the invention
Treat the problem that solves by the present invention
Yet, if static seal 5,5 is provided on the both sides of subregion plate 3, as mentioned above, follow ash from the subsidiary leakage of heating fluid G 1 side etc. to be accumulated on the upper side of subregion plate 3 as deposit T, as shown in Figure 6, and therefore the motion of subregion plate 3 is obstructed and exists rotary regenerative heat exchanger with the risk of shut-down operation.
In addition, in the situation that subregion plate 3 comprises above-mentioned metal sheet, very little gap at the seal member place is inevitable, as shown in Figure 7, and the performance of rotary regenerative heat exchanger is reduced by the leakage flow that produces from this gap, and has simultaneously the risk of the corrosion that causes by being included in the ash in leakage flow.
The invention is intended to solve above-mentioned traditional problem, and the problem that is solved by the present invention is to provide rotary regenerative heat exchanger, it makes it possible to the enhanced leaktightness effect and prevents corrosion, and basic not any risk of accumulation deposit on the subregion plate, and the operation of rotary regenerative heat exchanger is not caused any obstruction.
For the device that addresses this problem
Rotary regenerative heat exchanger according to the present invention has following structure, therein, hold rotor section's rotation in the enclosure of hot memory bank (such as heat transfer element), this hot memory bank relies on high-temperature heating fluid (such as waste gas) and is heated and stores heat, and cryogen to be heated (such as combustion air) relies on the heat of storing in hot memory bank and is heated; And provide the subregion plate in the upper end surface of rotor, it is used for separating the flow channel for the fluid of aforementioned two types (namely adding hot fluid and fluid to be heated) that flows through internal rotor, wherein there is minim gap between flow channel, and static seal is configured on the both sides in gap between the subregion plate of heat exchanger and external structure, described rotary regenerative heat exchanger is characterised in that, suction tube is provided in external structure, so that be pumped in the dust material that accumulates or stirred on the subregion plate, such as ash.
Advantage of the present invention
Show following advantage according to rotary regenerative heat exchanger of the present invention.
1) structure is used into and makes the dust material (such as ash) that invades on the subregion plate at any time be removed by blower or suction tube, so the motion of subregion plate is no longer hindered and do not exist rotary regenerative heat exchanger with the risk of shut-down operation by the accumulation of dust material.
2) the fabric cloth material is attached, thus in the end of static seal along the zone of exterior face and combination, so sealing effectiveness strengthens, and do not invade on the subregion plate such as the dust material of ash, and do not have the risk of corrosion.
3) the fabric cloth material is attached with lax state, so it can follow the vertical motion of subregion plate.
4) the fabric cloth material can be replaced under attachment member 8a and 8b auxiliary easily.
Description of drawings
Fig. 1 is the major part topology view that an one exemplary embodiment of the present invention is shown;
Fig. 2 is the major part topology view that different one exemplary embodiment of the present invention is shown;
Fig. 3 is the overall oblique view of rotary regenerative heat exchanger;
Fig. 4 (A) is the plan view schematic diagram of the major part of traditional rotary regenerative heat exchanger, and (B) is the cross sectional view along the line a-a in (A);
Fig. 5 is illustrated in the hermetically-sealed construction at top place of the subregion plate of traditional rotary regenerative heat exchanger;
Fig. 6 illustrates the problem about the hermetically-sealed construction in Fig. 5; And
Fig. 7 is illustrated in the different hermetically-sealed construction at the place, top of the subregion plate in traditional rotary regenerative heat exchanger.
The specific embodiment
Be described below with reference to accompanying drawing according to the one exemplary embodiment of rotary regenerative heat exchanger of the present invention.
In Fig. 1,2 ' is external structure, and 3 is that subregion plate and 5 is static seal.6 is that blower and 7 is suction tube.
Blower 6 is provided in external structure 2 ' and is connected to suitable blowing device (not describing).Blower 6 sprays towards the upper side of subregion plate 3 compressed air of supplying with from blowing device, in order to stir the dust material of accumulation, such as ash.
Suction tube 7 is provided in external structure 2 ' and is connected to suitable aspirator (not describing).Suction tube 7 relies on the suction action that is given by aspirator and aspirates the dust material that is stirred or accumulate, such as ash.
In Fig. 1, two blowers 6 possess betwixt suitable gap in a lateral direction subregion plate 3, and a suction tube 7 is provided between blower 6, but the quantity of blower 6 and suction tube 7 and layout are not limited to above, and pipe can configure on the longitudinal direction of subregion plate 3 or with any layout suitably, as long as dust material can be aspirated effectively.Further, the injection and the suction action that are given by blower 6 and suction tube 7 can produce by continued operation or discontinuous (intermittently) operation.In addition, only suction tube 7 can be operated, and blower 6 is operated when needed.According to circumstances, blower 6 can not exist.
Be built into according to the rotary regenerative heat exchanger of this one exemplary embodiment and make the dust material (such as ash) that invades on subregion plate 3 can at any time rely on blower 6 and suction tube 7 or rely on separately suction tube 7 to be removed, and therefore the motion of subregion plate 3 is no longer hindered and do not exist rotary regenerative heat exchanger with the risk of shut-down operation by the accumulation of dust material.
Fig. 2 illustrates different one exemplary embodiment of the present invention, and wherein 2 ' is external structure, and 3 is that subregion plate and 5 is static seal.
8 is the fabric cloth material, its in the end of static seal 5 along the zone combination of exterior face.One end of fabric cloth material relies on attachment member 8a to be fixed to static seal 5, and the other end relies on attachment member 8b to be fixed to subregion plate 3 simultaneously.
Any material can be used as fabric cloth material 8, as long as it is the suitable flexible fabric that has such as the filtering function of the dust material of ash.Fabric cloth material 8 is attached with relaxed state, makes it can follow the vertical motion of subregion plate 3.Further, fabric cloth material 8 relies on attachment member 8a and 8b and attached separably, makes it easily to be replaced.
Be built into according to the rotary regenerative heat exchanger of this one exemplary embodiment and make the zone combination along exterior face in the end of static seal 5 of fabric cloth material, and therefore sealing effectiveness is strengthened, dust material such as ash can not invade on subregion plate 3, and does not have the risk of corrosion.
Claims (5)
1. rotary regenerative heat exchanger, it comprises:
The rotatable rotor (1) that holds hot memory bank (1a) in shell (2) inside, wherein, described hot memory bank (1a) relies on high-temperature heating fluid (G1) to be heated, and is used for by described hot memory bank (1a) storage heat;
Cryogen (G2), its heat by storage in described hot memory bank (1a) heats;
Subregion plate (3,3 '), it separates high-temperature heating fluid flowing passage and cry-fluid flow passage, and wherein each channel arrangement is passed through the inside of described rotor (1), and wherein has the gap between passage;
Static seal (5), it is configured on the side in described gap between the described subregion plate (3,3 ') of described heat exchanger and described shell (2); With
Be arranged in the suction tube (7) in described shell (2), be used for removing by suction the dust material (T) of going up accumulation or stirring from described subregion plate (3,3 ') at described subregion plate (3,3 ').
2. rotary regenerative heat exchanger according to claim 1, it is characterized in that, also comprise the blower (6) that is arranged in described shell (2), its supply is towards described subregion plate (3,3 ') compressed air that upper side is sprayed, to stir dust material (T) from described subregion plate (3,3 ').
3. rotary regenerative heat exchanger, it comprises:
Shell (2) holds the rotor (1) of hot memory bank (1a) at described shell (2) internal rotating, and wherein said hot memory bank (1a) relies on high-temperature heating fluid (G1) and heats, and is used for storage heat therein;
Cryogen (G2), its heat by storage in described hot memory bank (1a) heats;
Subregion plate (3,3 '), it separates the flow channel that separates, and is used for each described high-temperature heating fluid (G1) and described cryogen (G2), to flow through the inside of described rotor (1), wherein there is minim gap between flow channel;
Static seal (5), it is configured on the side in described gap between described subregion plate (3,3 ') and described shell (2);
Fabric cloth material (8) is attached, and wherein an end of fabric cloth material (8) relies on the first attachment member to be fixed to described static seal (5), and the other end relies on the second attachment member to be fixed to described subregion plate (3,3 ').
4. rotary regenerative heat exchanger according to claim 3, is characterized in that, described fabric cloth material (8) when by described the first and second attachment members fixedly the time for relaxing.
5. rotary regenerative heat exchanger according to claim 3, is characterized in that, described fabric cloth material (8) is fixed removedly by described the first and second attachment members.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011281662A JP5713884B2 (en) | 2011-12-22 | 2011-12-22 | Rotating regenerative heat exchanger |
| JP2011-281662 | 2011-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103175425A true CN103175425A (en) | 2013-06-26 |
| CN103175425B CN103175425B (en) | 2015-07-08 |
Family
ID=48635462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210559980.XA Expired - Fee Related CN103175425B (en) | 2011-12-22 | 2012-12-21 | Rotary regenerative heat exchanger |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20130160968A1 (en) |
| JP (1) | JP5713884B2 (en) |
| CN (1) | CN103175425B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9440524B2 (en) | 2012-08-15 | 2016-09-13 | Beijingwest Industries, Co., Ltd. | Mount apparatus |
| CN110822468B (en) * | 2019-09-23 | 2021-01-19 | 西安交通大学 | Rotary step heat accumulating type air preheater |
| CN113757706B (en) * | 2021-09-28 | 2023-12-05 | 华能(福建)能源开发有限公司福州分公司 | Air heater sector plate ash dredging structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945681A (en) * | 1956-04-19 | 1960-07-19 | Air Preheater | Floating sector seals |
| CN85104275A (en) * | 1985-06-05 | 1986-12-03 | 巴尔克德股份公司 | Regenerator |
| CN2150515Y (en) * | 1993-01-07 | 1993-12-22 | 浙江大学 | Self-starting rotary type heat separator |
| JP2007127337A (en) * | 2005-11-04 | 2007-05-24 | Matsushita Electric Ind Co Ltd | Air conditioner |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166496A (en) * | 1978-08-21 | 1979-09-04 | The Air Preheater Company, Inc. | Static seal |
| US4372371A (en) * | 1981-10-13 | 1983-02-08 | The Air Preheater Company, Inc. | Trunnion air seal |
| JPS5952199A (en) * | 1982-09-20 | 1984-03-26 | Nippon Furekuto Kk | Rotary heat exchanger equipped with sweeping function |
| JPS5977294A (en) * | 1982-10-25 | 1984-05-02 | Nissan Motor Co Ltd | Sealing device of rotary regenerative type heat exchanger |
| US5577551A (en) * | 1992-09-09 | 1996-11-26 | Apparatebau Rothemuhle Brandt & Kritzler Gmbh | Regenerative heat exchanger and method of operating the same |
| US5425543A (en) * | 1993-09-17 | 1995-06-20 | Buckshaw; Dennis J. | Seal assembly for rotating shaft |
| JPH10110935A (en) * | 1996-10-08 | 1998-04-28 | Abb Kk | Discharged smoke processing device by rotary regenerative type heat exchanger |
| US5762128A (en) * | 1996-11-15 | 1998-06-09 | Abb Air Preheater, Inc. | On-line regenerative air preheater fouling sensing system |
| US6543520B2 (en) * | 2001-02-21 | 2003-04-08 | Alstom Power N.V. | Low-distortion axial seal plate for air preheaters |
| US8157897B2 (en) * | 2007-06-29 | 2012-04-17 | Caterpillar Inc. | Filter purge system utilizing impact wave generating device and vacuum source |
| PL2199724T3 (en) * | 2008-12-17 | 2013-01-31 | Balcke Duerr Gmbh | Method for operating a regenerative heat exchanger and regenerative heat exchanger with improved efficiency |
| US20100251975A1 (en) * | 2009-04-01 | 2010-10-07 | Alstom Technology Ltd | Economical use of air preheat |
| US20100251942A1 (en) * | 2009-04-01 | 2010-10-07 | Alstom Technology Ltd | Reagent drying via excess air preheat |
| US20100289223A1 (en) * | 2009-05-14 | 2010-11-18 | Birmingham James W | Regenerative heat exchanger and method of reducing gas leakage therein |
-
2011
- 2011-12-22 JP JP2011281662A patent/JP5713884B2/en not_active Expired - Fee Related
-
2012
- 2012-12-08 US US13/708,954 patent/US20130160968A1/en not_active Abandoned
- 2012-12-21 CN CN201210559980.XA patent/CN103175425B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945681A (en) * | 1956-04-19 | 1960-07-19 | Air Preheater | Floating sector seals |
| CN85104275A (en) * | 1985-06-05 | 1986-12-03 | 巴尔克德股份公司 | Regenerator |
| CN2150515Y (en) * | 1993-01-07 | 1993-12-22 | 浙江大学 | Self-starting rotary type heat separator |
| JP2007127337A (en) * | 2005-11-04 | 2007-05-24 | Matsushita Electric Ind Co Ltd | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103175425B (en) | 2015-07-08 |
| JP5713884B2 (en) | 2015-05-07 |
| US20130160968A1 (en) | 2013-06-27 |
| JP2013130369A (en) | 2013-07-04 |
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Owner name: AVA TECHNOLOGIES LTD. Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD. Effective date: 20150127 |
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