CN103175425B - Rotary regenerative heat exchanger - Google Patents
Rotary regenerative heat exchanger Download PDFInfo
- Publication number
- CN103175425B CN103175425B CN201210559980.XA CN201210559980A CN103175425B CN 103175425 B CN103175425 B CN 103175425B CN 201210559980 A CN201210559980 A CN 201210559980A CN 103175425 B CN103175425 B CN 103175425B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- subregion plate
- rotary regenerative
- memory bank
- rotor
- 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.)
- Expired - Fee Related
Links
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
The rotary regenerative heat exchanger be arranged in generating equipment etc. usually used as air pre-heater has following structure traditionally, namely the rotor 1 of hot memory bank 1a (such as heat transfer element) is wherein held at shell 2 internal rotating, hot memory bank 1a relies on high-temperature heating fluid G 1 (such as waste gas) heating and stores heat, and cryogen G2 to be heated (such as combustion air) heat by the heat that stores in hot memory bank 1a, as shown in Figure 3.
As can be obvious from Fig. 4, flow channel for flowing through the fluid (namely G1 and G2) of above-mentioned two types of rotor 1 inside relies on the subregion plate 3,3 ' at upper surface and the lower surface place being provided in rotor 1 to separate, and wherein between flow channel, there is minim gap.
Two kinds of leakages (seepage) produce from the side (it is high-pressure side) of fluid G 2 to be heated towards heating fluid G 1 side (it is low-pressure side) the rotary regenerative heat exchanger of the type.The first leaks as directly leaking, and it is caused by the difference in the pressure between two kinds of fluid G 1, G2, and the second leaks the subsidiary leakage for the rotation with rotor 1.
Sealing mechanism normally provides in the various positions of heat exchanger, to prevent direct leakage, and comprise the subregion plate 3,3 ' of composition fixation side at the radial seal parts (it is a kind of such mechanism) of high temperature side, and the radial seal 1b (it is coupled to rotor 1) of composition rotary side.Especially, upper subregion plate 3 is connected to upper external structure 2 ' via adjusting rod 4, and the both sides in the gap of static seal 5 between the subregion plate 3 and external structure of heat exchanger configure, to prevent the direct leakage from the gap S between external structure 2 ' and the upper side of subregion plate 3.
Also there is following system, namely wherein static seal 5,5 is configured on the both sides of subregion plate 3, as shown in Figure 5, provides middle nip thus, to strengthen the sealing effectiveness of the office, top at subregion plate 3.Further, static seal 5 is made up of metal sheet.
Summary of the invention
Treat the problem solved by the present invention
But, if static seal 5,5 is provided on the both sides of subregion plate 3, as mentioned above, as deposit T in the upper side being then accumulated in subregion plate 3 with the ash etc. of the subsidiary leakage from heating fluid G 1 side, as shown in Figure 6, and therefore the motion of subregion plate 3 is obstructed and there is rotary regenerative heat exchanger by the risk of shut-down operation.
In addition, when subregion plate 3 comprises above-mentioned metal sheet, be inevitable in the very little gap at seal member place, 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 there is the risk of the corrosion caused by the ash be included in leakage flow simultaneously.
The invention is intended to solve above-mentioned traditional problem, and the problem solved by the present invention is to provide rotary regenerative heat exchanger, it makes it possible to enhanced leaktightness effect and prevents corrosion, and the basic any risk not accumulating deposit on subregion plate, and any obstruction is not caused to the operation of rotary regenerative heat exchanger.
For solving the device of this problem
Rotary regenerative heat exchanger according to the present invention has following structure, wherein, the rotor holding hot memory bank (such as heat transfer element) rotates in portion in the enclosure, this hot memory bank relies on high-temperature heating fluid (such as waste gas) and is heated and store heat, and cryogen to be heated (such as combustion air) relies on the heat that stores in hot memory bank and heated; And provide subregion plate in the upper end surface of rotor, it is for separating the flow channel of the fluid (namely adding hot fluid and fluid to be heated) of aforementioned two types for flowing through internal rotor, wherein between flow channel, there is minim gap, and static seal is configured on the both sides in gap between the subregion plate and external structure of heat exchanger, the feature of described rotary regenerative heat exchanger is, suction tube is provided in external structure, so that to be pumped on subregion plate accumulation or by the dust material stirred, such as ash.
Advantage of the present invention
Rotary regenerative heat exchanger according to the present invention shows following advantage.
1) structure is used into and the dust material (such as ash) invaded on subregion plate is at any time removed by blower or suction tube, and therefore the motion of subregion plate is no longer hindered by the accumulation of dust material and there is not rotary regenerative heat exchanger by the risk of shut-down operation.
2) fabric cloth material is attached, so that combines along the region of exterior face in the end of static seal, and therefore sealing effectiveness is strengthened, and such as the dust material of ash does not invade on subregion plate, and there is not the risk of corrosion.
3) fabric cloth material is attached with lax state, and therefore it can follow the vertical motion of subregion plate.
4) fabric cloth material can attachment member 8a and 8b auxiliary under be easily replaced.
Accompanying drawing explanation
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;
The plan view schematic diagram that Fig. 4 (A) is 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 illustrates the hermetically-sealed construction at the top place of the subregion plate at traditional rotary regenerative heat exchanger;
Fig. 6 illustrates the problem about the hermetically-sealed construction in Fig. 5; And
Fig. 7 illustrates the different hermetically-sealed construction at the top place of the subregion plate in traditional rotary regenerative heat exchanger.
Detailed description of the invention
One exemplary embodiment according to rotary regenerative heat exchanger of the present invention is described below with reference to accompanying drawing.
In FIG, 2 ' is external structure, and 3 are subregion plate and 5 for static seal.6 are blower and 7 for suction tube.
Blower 6 to be provided in external structure 2 ' and to be connected to suitable blowing device (description).Blower 6 sprays towards the upper side of subregion plate 3 compressed air supplied from blowing device, to stir the dust material of accumulation, and such as ash.
Suction tube 7 to be provided in external structure 2 ' and to be connected to suitable aspirator (description).Suction tube 7 relies on the suction action that given by aspirator and aspirates the dust material being stirred or accumulate, such as ash.
In FIG, two blowers 6 are in the suitable gap possessed in a lateral direction betwixt of 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 suitably on the longitudinal direction of subregion plate 3 or with any layout, as long as dust material can be effectively pumped.Further, the injection given by blower 6 and suction tube 7 and suction action 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.
Being built into according to the rotary regenerative heat exchanger of this one exemplary embodiment makes the dust material (such as ash) invaded on subregion plate 3 at any time can rely on blower 6 and suction tube 7 or rely on suction tube 7 separately and be removed, and therefore the motion of subregion plate 3 is no longer hindered by the accumulation of dust material and there is not rotary regenerative heat exchanger by the risk of shut-down operation.
Fig. 2 illustrates different one exemplary embodiment of the present invention, and wherein 2 ' is external structure, and 3 are subregion plate and 5 for static seal.
8 is fabric cloth material, and its region in the end of static seal 5 along exterior face combines.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 have the suitable flexible fabric to the such as 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, and it can be easily replaced.
Being built into according to the rotary regenerative heat exchanger of this one exemplary embodiment makes the region of fabric cloth material in the end of static seal 5 along exterior face combine, and therefore sealing effectiveness is strengthened, such as the dust material of ash can not invade on subregion plate 3, and there is not the risk of corrosion.
Claims (5)
1. a rotary regenerative heat exchanger, it comprises:
The rotatable rotor (1) of hot memory bank (1a) is held in shell (2) inside, wherein, described hot memory bank (1a) relies on high-temperature heating fluid (G1) to be heated, for storing heat by described hot memory bank (1a);
Cryogen (G2), its heat by the heat that stores in the described hot memory bank (1a);
Subregion plate (3,3 '), it is by high-temperature heating fluid flowing passage and cry-fluid flow channel partition, and wherein each channel arrangement is by the inside of described rotor (1), and wherein there is gap between channels;
Static seal (5), is configured on the both sides in described gap between its described subregion plate (3,3 ') at described heat exchanger and described shell (2); With
Be arranged in the suction tube (7) in described shell (2), for removing at described subregion plate (3 by aspirating, 3 ') the upper dust material (T) accumulating or stir from described subregion plate (3,3 ').
2. rotary regenerative heat exchanger according to claim 1, it is characterized in that, also comprise the blower (6) be 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. a rotary regenerative heat exchanger, it comprises:
Shell (2), hold the rotor (1) of hot memory bank (1a) at described shell (2) internal rotating, wherein said hot memory bank (1a) relies on high-temperature heating fluid (G1) and heats, for storing heat wherein;
Cryogen (G2), its heat by the heat that stores in the described hot memory bank (1a);
Subregion plate (3,3 '), it separates the flow channel be separated, for high-temperature heating fluid (G1) described in each and described cryogen (G2), to flow through the inside of described rotor (1), wherein between flow channel, there is minim gap;
Static seal (5), it is configured on the both sides in described gap between described subregion plate (3,3 ') and described shell (2);
Fabric cloth material (8) is attached, wherein one 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) is lax when being fixed by described first and second attachment members.
5. rotary regenerative heat exchanger according to claim 3, is characterized in that, described fabric cloth material (8) is fixed removedly by described first and second attachment members.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-281662 | 2011-12-22 | ||
| JP2011281662A JP5713884B2 (en) | 2011-12-22 | 2011-12-22 | Rotating regenerative heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103175425A CN103175425A (en) | 2013-06-26 |
| CN103175425B true 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 |
|---|---|---|---|---|
| CN104583640B (en) | 2012-08-15 | 2016-01-20 | 北京京西重工有限公司 | Draft hitch |
| 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 |
| EP2199724B1 (en) * | 2008-12-17 | 2012-08-15 | Balcke-Dürr 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 |
|---|---|
| US20130160968A1 (en) | 2013-06-27 |
| JP2013130369A (en) | 2013-07-04 |
| JP5713884B2 (en) | 2015-05-07 |
| CN103175425A (en) | 2013-06-26 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Owner name: AVA TECHNOLOGIES LTD. Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD. Effective date: 20150127 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150127 Address after: Brugge, Switzerland Applicant after: Ao Hua Science and Technology Ltd. Address before: Baden, Switzerland Applicant before: Alstom Technology Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160616 Address after: American New York Patentee after: AVA TECHNOLOGIES LTD. Address before: Brugge, Switzerland Patentee before: Ao Hua Science and Technology Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20201221 |