CN208635139U - 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
- CN208635139U CN208635139U CN201820648821.XU CN201820648821U CN208635139U CN 208635139 U CN208635139 U CN 208635139U CN 201820648821 U CN201820648821 U CN 201820648821U CN 208635139 U CN208635139 U CN 208635139U
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- China
- Prior art keywords
- air
- pressure chamber
- preheater
- pressure
- barometer
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- 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.)
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Classifications
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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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Abstract
The utility model discloses a kind of pressure compensation regenerative air heater anti-air leakage structure and air preheaters, 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)；Air inlet (8) are provided 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 utility model, passes through pressurized equipment, hot fume 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 utility model relates to a kind of pressure compensation regenerative air heater anti-air leakage structure and air preheaters, belong to air
Preheater field.
Background technique
One of reason of rotary air preheater air leak mainly has: first is that 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 being 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 is that rotatable parts can also take partial air to fume side, but since revolving 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, because blower power output is limited when serious,
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.
Summary of the invention
It is an object of that present invention to provide a kind of pressure compensation regenerative air heater anti-air leakage structure and air preheaters, can
Effectively wind side air is prevented to leak to fume side.
To achieve the above object, the utility model provides a kind of pressure compensation regenerative air heater anti-air leakage structure, including
Pressure chamber, blast pipe, pressurized equipment and induced duct；The Pressure chamber is arranged under the truss of Secondary Air side below fanning strip；Institute
It states and is provided with air inlet on fanning strip；Hot gas is by the pressurized equipment of induced duct, blast pipe, subsequently into Pressure chamber.
Meanwhile the utility model also provides a kind of air preheater, includes above-mentioned anti-air leakage structure.
Compared with prior art, Pressure chamber is arranged in air preheater wind lateral fume side transfer point the utility model,
By pressurized equipment, hot fume is injected to Pressure chamber, increases pressure in storehouse, counteracts the normal pressure from air side, effectively keep away
Leakage of the air to fume side is exempted from.If hot-air is introduced the structure, the tube wall temperature of cold end can be thus promoted rapidly,
So that liquid sulfuric acid hydrogen ammonium is become gaseous state, eliminate blockage problem, realizes the cleaning to rotor.
Detailed description of the invention
Fig. 1 is the utility model composition schematic diagram；
Fig. 2 is the utility model Pressure chamber structural schematic diagram；
Fig. 3 is the utility model installation site instruction figure；
Fig. 4 is the pressurized equipment control principle drawing of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
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 under Secondary Air side truss 7 below fanning strip 6；The fanning strip 6
On be provided with air inlet 8；Hot gas is by the pressurized equipment 3 of induced duct 4, 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 utility model further includes controller 15, the first barometer 16 and the second barometer 17,
Wherein the setting of the first barometer 16 is arranged in air side, the second barometer 17 in air inlet 8, and controller 15 is according to the first barometer
16 and second barometer 17 pressure difference control pressurized equipment 3 operate.It can reduce pressurization with self adaptive control pressurized equipment 3 and set
Standby 3 power loss.
The utility model also provides a kind of air preheater, includes above-mentioned preheater anti-air leakage structure.
Claims (4)
1. a kind of pressure compensation regenerative air heater anti-air leakage structure, which is characterized in that 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)；Institute
It states and is provided with air inlet (8) on fanning strip (6)；Hot gas by induced duct (4) pressurized equipment (3), blast pipe (2), subsequently into
Pressure chamber (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 composition；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 mounted on the fan-shaped sealing in upside
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 preheater anti-air leakage structure described in claims 1 or 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820648821.XU CN208635139U (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 |
|---|---|---|---|
| CN201820648821.XU CN208635139U (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 |
|---|---|
| CN208635139U true CN208635139U (en) | 2019-03-22 |
Family
ID=65732904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820648821.XU Expired - Fee Related CN208635139U (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) | CN208635139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613213A (en) * | 2018-05-02 | 2018-10-02 | 李暐 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
-
2018
- 2018-05-02 CN CN201820648821.XU patent/CN208635139U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613213A (en) * | 2018-05-02 | 2018-10-02 | 李暐 | A kind of pressure compensation regenerative air heater anti-air leakage structure and air preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 Termination date: 20200502 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |