CN108613213A - A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater - Google Patents
A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater Download PDFInfo
- Publication number
- CN108613213A CN108613213A CN201810413691.6A CN201810413691A CN108613213A CN 108613213 A CN108613213 A CN 108613213A CN 201810413691 A CN201810413691 A CN 201810413691A CN 108613213 A CN108613213 A CN 108613213A
- Authority
- CN
- China
- Prior art keywords
- air
- pressure chamber
- pressure
- preheater
- barometer
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
-
- 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
Abstract
The invention discloses a kind of pressure-compensated preheater anti-air leakage structures, including Pressure chamber (1), blast pipe (2), pressurized equipment (3) and induced duct (4)；The Pressure chamber (1) is arranged under Secondary Air side truss (7) below fanning strip (6)；It is provided with air inlet (8) on the fanning strip (6)；Hot gas is by induced duct (4) pressurized equipment (3), blast pipe (2), subsequently into Pressure chamber (1).Compared with prior art, Pressure chamber is arranged in air preheater wind lateral fume side transfer point the present invention, passes through pressurized equipment, heat smoke is injected to Pressure chamber, increase pressure in storehouse, counteracts the normal pressure from air side, effectively prevent leakage of the air to fume side.If hot-air is introduced the structure, the tube wall temperature of cold end can be thus promoted rapidly, liquid sulfuric acid hydrogen ammonium is made to become gaseous state, eliminates blockage problem, realize the cleaning to rotor.
Description
Technical field
The present invention relates to a kind of pressure compensation regenerative air heater anti-air leakage structure and air preheaters, belong to air preheat
Device field.
Background technology
One of rotary air preheater air leak reason mainly has:First, between due to having between rotor and stator
Gap, and air preheater size is big, when operation, flue gas is from top to bottom.Air from bottom to top flows, and makes entire air preheater
Upper temp it is high, temperature of lower is low, forms mushroom deformation, so that each section gap is changed, more increase and leak out.Second is that
The air heated is positive pressure, and flue gas is negative pressure, and there are certain pressure differences therebetween.Under the action of pressure difference, between air passes through
Gap is leaked in signs of human habitation gas.Third, rotatable parts can also take partial air to fume side, but since rotating speed is very low, this part inleakage
Seldom, it is usually no more than 1%.Air-heater leakage can make to send, air-introduced machine power consumption increases, when serious because wind turbine contribute it is limited,
Boiler is forced load down operation.It leaks out and heat loss due to exhaust gas is caused to increase, reduce the thermal efficiency of boiler.Leaking out also makes hot blast temperature
It reduces, leads to the stifled ash of heating surface low-temperature zone burn into.
Invention content
Present invention aims at a kind of pressure compensation regenerative air heater anti-air leakage structure of offer and air preheaters, can
Effectively wind side air is prevented to be revealed to fume side.
To achieve the above object, the present invention provides a kind of pressure compensation regenerative air heater anti-air leakage structure, including pressure
Storehouse, blast pipe, pressurized equipment and induced duct；；The Pressure chamber is arranged under the truss of Secondary Air side below fanning strip；The fan
It is provided with air inlet on shape plate；Hot gas is by the pressurized equipment of induced duct, blast pipe, subsequently into Pressure chamber.
Meanwhile the present invention also provides a kind of air preheaters, including above-mentioned anti-air leakage structure.
Compared with prior art, Pressure chamber is arranged in air preheater wind lateral fume side transfer point the present invention, passes through
Pressurized equipment injects heat smoke to Pressure chamber, increases pressure in storehouse, counteract the normal pressure from air side, effectively prevent
Leakage of the air to fume side.If hot-air is introduced the structure, the tube wall temperature of cold end can be thus promoted rapidly, makes liquid
State ammonium hydrogen sulfate becomes gaseous state, eliminates blockage problem, realizes the cleaning to rotor.
Description of the drawings
Fig. 1 is composition schematic diagram of the present invention；
Fig. 2 is Pressure chamber structural schematic diagram of the present invention；
Fig. 3 is installation site of the present invention instruction figure；
Fig. 4 is the pressurized equipment control principle drawing of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of pressure-compensated preheater anti-air leakage structure, including Pressure chamber 1, blast pipe 2, pressurized equipment
3 and induced duct 4；As shown in figure 3, the Pressure chamber is arranged below Secondary Air side 7 times fanning strips of truss 6；The fanning strip 6
On be provided with air inlet 8；Hot gas is by 4 pressurized equipment 3 of induced duct, blast pipe 2, subsequently into Pressure chamber 1, arrow direction in figure
For airflow direction.
Further, as shown in Fig. 2, the Pressure chamber 1 is sealed by the rotor sector storehouse 5 of air preheater and upside sector
Plate 11, downside Sectorial sealplate 12, arc sealing plate 13 and several sealing elements composition；The upside Sectorial sealplate 11 and downside
Sectorial sealplate 12 is fixedly mounted on truss 7, and the arc sealing plate 13 is fixedly mounted on the rotor case of air preheater
On；The sealing element is mounted on upside Sectorial sealplate 11, downside Sectorial sealplate 12, arc sealing plate 13 and rotor sector storehouse
Between 5.
Further, as shown in figure 4, the invention also includes controller 15, the first barometer 16 and the second barometers 17, wherein
The setting of first barometer 16 is arranged in air side, the second barometer 17 in air inlet 8, and controller 15 is according to 16 He of the first barometer
The pressure difference control pressurized equipment 3 of second barometer 17 operates.Pressurized equipment 3 can be reduced with self adaptive control pressurized equipment 3
Power attenuation.
The present invention also provides a kind of air preheaters, including the preheater Anti-air-leakage described in claim 1 or claim 2
Structure.
Claims (4)
1. a kind of pressure-compensated preheater anti-air leakage structure, which is characterized in that including Pressure chamber (1), blast pipe (2), pressurization
Equipment (3) and induced duct (4)；The Pressure chamber (1) is arranged under Secondary Air side truss (7) below fanning strip (6)；The fan
Air inlet (8) is provided on shape plate (6)；Hot gas is by induced duct (4) pressurized equipment (3), blast pipe (2), subsequently into pressure
Storehouse (1).
2. preheater anti-air leakage structure according to claim 1, which is characterized in that the Pressure chamber (1) is by air preheat
The rotor sector storehouse (5) of device and upside Sectorial sealplate (11), downside Sectorial sealplate (12), arc sealing plate (13) and if
Dry seal part forms；The upside Sectorial sealplate (11) and downside Sectorial sealplate (12) are fixedly mounted on truss (7), institute
Arc sealing plate (13) is stated to be fixedly mounted on the rotor case of air preheater；The sealing element is sealed mounted on upside sector
Between plate (11), downside Sectorial sealplate (12), arc sealing plate (13) and rotor sector storehouse (5).
3. preheater anti-air leakage structure according to claim 1, which is characterized in that further include controller (15), the first gas
Pressure meter (16) and the second barometer (17), wherein the first barometer (16) setting, in air side, the second barometer (17) setting exists
Air inlet (8), controller (15) control pressurized equipment (3) according to the pressure difference of the first barometer (16) and the second barometer (17)
Operating.
4. a kind of air preheater, which is characterized in that include the preheater anti-air leakage structure described in claims 1 or 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413691.6A CN108613213A (en) | 2018-05-02 | 2018-05-02 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413691.6A CN108613213A (en) | 2018-05-02 | 2018-05-02 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108613213A true CN108613213A (en) | 2018-10-02 |
Family
ID=63661695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810413691.6A Pending CN108613213A (en) | 2018-05-02 | 2018-05-02 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108613213A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5044424A (en) * | 1980-12-19 | 1991-09-03 | Monro Richard J | Heat generator |
| JPH09508697A (en) * | 1995-06-29 | 1997-09-02 | エービービー エア プレヒーター インコーポレイテッド | Sector plate and sealing device for three compartment air preheater |
| US6328094B1 (en) * | 1997-12-19 | 2001-12-11 | Mitsubishi Heavy Industries Ltd. | Rotary type regenerative heat exchanger |
| CN105864817A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for preventing AH blockage and heat exchange surface corrosion by hot secondary air supercharged countercurrent |
| CN107655027A (en) * | 2017-09-11 | 2018-02-02 | 大唐东北电力试验研究所有限公司 | Rotary regenerative air preheater and its Secondary Air side subtract the obstruction-proof method that leaks out |
| CN107726356A (en) * | 2017-11-21 | 2018-02-23 | 杭州新际能源科技有限公司 | More points of storehouse self-cleaning corrosion-and blocking-prevention rotary regenerative air preheaters |
| CN208635139U (en) * | 2018-05-02 | 2019-03-22 | 李暐 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
-
2018
- 2018-05-02 CN CN201810413691.6A patent/CN108613213A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5044424A (en) * | 1980-12-19 | 1991-09-03 | Monro Richard J | Heat generator |
| JPH09508697A (en) * | 1995-06-29 | 1997-09-02 | エービービー エア プレヒーター インコーポレイテッド | Sector plate and sealing device for three compartment air preheater |
| US6328094B1 (en) * | 1997-12-19 | 2001-12-11 | Mitsubishi Heavy Industries Ltd. | Rotary type regenerative heat exchanger |
| CN105864817A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for preventing AH blockage and heat exchange surface corrosion by hot secondary air supercharged countercurrent |
| CN107655027A (en) * | 2017-09-11 | 2018-02-02 | 大唐东北电力试验研究所有限公司 | Rotary regenerative air preheater and its Secondary Air side subtract the obstruction-proof method that leaks out |
| CN107726356A (en) * | 2017-11-21 | 2018-02-23 | 杭州新际能源科技有限公司 | More points of storehouse self-cleaning corrosion-and blocking-prevention rotary regenerative air preheaters |
| CN208635139U (en) * | 2018-05-02 | 2019-03-22 | 李暐 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 221000 Yongjing New Town L6-2-302, Xuzhou New Town, Jiangsu Province Applicant after: Li Wei Address before: Room 2101, Room 2, Building 100, Greenbelt Business City, Xuzhou City, Jiangsu Province, 221000 Applicant before: Li Wei |