CN108150455A - A kind of heat power plant boiler air-introduced machine and cooling means - Google Patents
A kind of heat power plant boiler air-introduced machine and cooling means Download PDFInfo
- Publication number
- CN108150455A CN108150455A CN201810093597.7A CN201810093597A CN108150455A CN 108150455 A CN108150455 A CN 108150455A CN 201810093597 A CN201810093597 A CN 201810093597A CN 108150455 A CN108150455 A CN 108150455A
- Authority
- CN
- China
- Prior art keywords
- air
- cooling wind
- introduced machine
- fan
- power plant
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 56
- 239000000428 dust Substances 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 8
- 238000005119 centrifugation Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 235000001508 sulfur Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of heat power plant boiler air-introduced machine and cooling means, including axle induced-draft fan, the axle induced-draft fan air inlet between air outlet be equipped with fan bearing room and cylinder chamber, the axle induced-draft fan is equipped with cooling wind air inlet, the fan bearing room and one end of cylinder chamber are connected by blast pipe respectively with cooling wind air inlet, the other end is connected respectively by discharge pipe with female air hose, the cooling wind air outlet of mother's air hose is arranged in the air inlet of axle induced-draft fan, present apparatus good cooling results, the effective leakage for limiting high-temperature flue gas, alleviate the corrosion of equipment, reduce small-sized centrifugation cooling blower operation and maintenance cost.
Description
Technical field
The present invention relates to a kind of heat power plant boiler air-introduced machine and cooling means.
Background technology
Air-introduced machine is the Important Auxiliary equipment of heat power plant boiler, mainly discharges the high-temperature flue gas to burn in boiler, and
To cause the environment of negative pressure in boiler.It is typically among electric precipitation and desulphurization system, accidental conditions entrance negative pressure is about
1800-4500Pa.The air-introduced machine for being currently used for thermal power generation uses axial fan more, and 600MW unit air inducing acc powers are general
Between 4000-6000kw, blade radius about 1500mm.Working media temperature is higher, generally at 80-100 DEG C or so, to prevent axis
Case and hydraulic cylinder overheat and corrosion are held, its bearing housing and hydraulic cylinder need to be cooled down.
As shown in Figure 1, the existing type of cooling uses fan bearing room 11 of the centrifugal blower 21 to axle induced-draft fan 1 more
With 12 inside air blast of cylinder chamber, then fan bearing room 11 and cylinder chamber 12 are cold on axle induced-draft fan 1 by being arranged on
But cooling wind is discharged into air by wind exhaust outlet 23.But the wheel hub 15 of axle induced-draft fan 1 and 16 relative motion of casing, the two
Between have certain interval, because running environment is poor, containing a large amount of sulfurs and flying dust, axial-flow type air inducing in the high-temperature flue gas that burns in boiler
Sealing effect between 1 wheel hub 15 of machine and casing 16 is unable to reach the effect being fully sealed, and therefore, is transported in axle induced-draft fan 1
In capable process, the high-temperature flue gas containing a large amount of sulfurs and flying dust is leaked to fan bearing room 11 and cylinder chamber by gap
12, and the wind blasted with centrifugal blower 21 is discharged together, since sulfureous in flue gas part is higher, peripheral equipment is caused to corrode, to ring
Border causes to seriously affect, while influences the health of operating personnel, therefore, is deposited using the mode that small-sized 21 wind turbine of centrifugation is cooled down
In higher operating cost and the cost of overhaul.
Invention content
The present invention proposes a kind of good cooling results in view of the deficiencies of the prior art, effectively limits the outer of high-temperature flue gas
Leakage, alleviates the corrosion of equipment, reduces the heat power plant boiler air inducing of small-sized centrifugation cooling blower operation and maintenance cost
Machine and cooling means.
The purpose of the present invention is achieved by using following technical proposals：
A kind of heat power plant boiler air-introduced machine, including axle induced-draft fan, the axle induced-draft fan is in air inlet
To fan bearing room and cylinder chamber is equipped between air outlet, the axle induced-draft fan is equipped with cooling wind air inlet, described
Fan bearing room and one end of cylinder chamber are connected by blast pipe respectively with cooling wind air inlet, and the other end passes through outlet air respectively
Pipe is connected with female air hose, and the cooling wind air outlet of mother's air hose is arranged in the air inlet of axle induced-draft fan.Using above-mentioned
Structure, the present apparatus utilize the negative pressure of axle induced-draft fan entrance so that subnormal ambient is formed in fan bearing room and cylinder chamber,
So as to which the cooling wind sucking of outside atmosphere be come in by cooling wind air inlet, to the bearing housing and hydraulic cylinder of axle induced-draft fan
Cooled down, meanwhile, by the gap between air-introduced machine wheel hub and casing enter fan bearing room and cylinder chamber, containing big
The high-temperature flue gas of sulfur and flying dust is measured, also enters air-introduced machine entrance therewith, will not be leaked to outside wind turbine again, so as to prevent to week
Edge equipment causes to corrode.
The cooling wind air outlet of mother's air hose is more than the trumpet type of female dust diameter for diameter.
Mother's air hose is equipped with valve.It is convenient that cooling wind is controlled.
The cooling wind air inlet is equipped with strainer.So as to prevent sundries from entering cooling air channel.
A kind of cooling means of heat power plant boiler air-introduced machine sets cooling wind air outlet in fan inlet,
Extraneous cooling wind by air-introduced machine fan bearing room and cylinder chamber with cooling wind air outlet is connected by pipeline, utilizes air inducing
Machine air inlet negative pressure so that cooling wind flows in pipeline.
Since using the above structure, the present invention has as follows a little：
1st, the better cooling effect of more former mode can be reached, bearing housing temperature reduces 2-4 DEG C.
2nd, the effective leakage for limiting high-temperature flue gas alleviates the burn into of equipment to air-introduced machine follow-up system without influence.
3rd, small-sized centrifugation cooling blower operation and maintenance cost are eliminated, 40,000 yuan can be saved every year.
4th, because cooling air quantity is contributed compared to relatively negligible compared with air-introduced machine, therefore the influence to air-introduced machine power consumption is also very
It is small.
In conclusion the present apparatus utilizes the negative pressure of axle induced-draft fan inlet, air is sucked by air-introduced machine by air hose
In bearing chamber and cylinder chamber, to achieve the purpose that cool down it, while the leakage of flue gas at casing is eliminated.
Description of the drawings
Fig. 1 is the structure diagram of existing axle induced-draft fan.
Fig. 2 is the structure diagram of the present invention.
In attached drawing：1-axle induced-draft fan, 11-fan bearing room, 12-cylinder chamber, 13-air inlet, 14-go out
Air port, 15-wheel hub, 16-casing, 21-centrifugal blower, 22-discharge pipe, 23-cooling wind exhaust outlet, 24-cooling wind into
Air port, 25-strainer, 26-valve, 27-mother air hose, 28-cooling wind air outlet.
Specific embodiment
Below in conjunction with the accompanying drawings and specific example, a kind of specific implementation of heat power plant boiler air-introduced machine is described in detail
Mode.
As shown in Figure 1 and Figure 2, a kind of heat power plant boiler air-introduced machine, including axle induced-draft fan 1, the axial-flow type
Air-introduced machine 1 is equipped with fan bearing room 11 and cylinder chamber 12, the axle induced-draft fan 1 between air inlet 13 to air outlet 14
Equipped with cooling wind air inlet 24, one end of the fan bearing room 11 and cylinder chamber 12 passes through blast pipe and cooling wind respectively
Air inlet 24 connects, and the other end is connected respectively by discharge pipe 22 with female air hose 27, the cooling wind air outlet of mother's air hose 27
28 are arranged in the air inlet 13 of axle induced-draft fan, and the cooling wind air outlet 28 of mother's air hose 27 is more than female air hose for diameter
The trumpet type of diameter, mother's air hose 27 are equipped with valve 26, and the cooling wind air inlet is equipped with strainer 25.
A kind of cooling means of heat power plant boiler air-introduced machine sets cooling wind air outlet in fan inlet,
Extraneous cooling wind by air-introduced machine fan bearing room and cylinder chamber with cooling wind air outlet is connected by pipeline, utilizes air inducing
Machine air inlet negative pressure so that cooling wind flows in pipeline.
The present apparatus can be directly improved on existing axle induced-draft fan, first in the air inlet of axle induced-draft fan
The cooling wind air outlet 28 of the female air hose 27 of setting, the other end of female air hose 27 is connected with the air duct of centrifugal blower 21 in mouthful,
It installs valve at the pipeline being connect in centrifugal blower with air duct additional, former cooling wind exhaust outlet 23 is changed to cooling wind air inlet 24 and adds
Fill stainless steel filtering net, prevent sundries from entering, improvement of the completion to existing axle induced-draft fan in this way, in this way in use, only need by
The valve that centrifugal blower is connect with air duct is closed, then opens the valve 26 on female air hose.
It is above-mentioned for the preferred embodiment of the present invention, but those skilled in the art should be understood that do not depart from it is appended
In the spirit and scope of the present invention that claims are limited, in form and details to the various changes made by the present invention
Change, belong to protection scope of the present invention.
Claims (5)
1. a kind of heat power plant boiler air-introduced machine, including axle induced-draft fan, the axle induced-draft fan is arrived in air inlet
Fan bearing room and cylinder chamber are equipped between air outlet, it is characterised in that：The axle induced-draft fan is equipped with the external world even
One end of logical cooling wind air inlet, the fan bearing room and cylinder chamber is connected by blast pipe with cooling wind air inlet,
The other end is connected respectively by discharge pipe with female air hose, and the cooling wind air outlet of mother's air hose is arranged on axle induced-draft fan
In air inlet.
2. heat power plant boiler air-introduced machine according to claim 1, it is characterised in that：The cooling wind of mother's air hose
Air outlet is more than the trumpet type of female dust diameter for diameter.
3. heat power plant boiler air-introduced machine according to claim 2, it is characterised in that：Mother's air hose is equipped with valve
Door.
4. the heat power plant boiler air-introduced machine according to one of claims 1 to 3, it is characterised in that：The cooling wind
Air inlet is equipped with strainer.
5. a kind of cooling means of heat power plant boiler air-introduced machine, it is characterised in that：It sets and cools down in fan inlet
Wind air outlet is connected extraneous cooling wind by air-introduced machine fan bearing room and cylinder chamber by pipeline with cooling wind air outlet
It is logical, utilize fan inlet negative pressure so that cooling wind flows in pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093597.7A CN108150455A (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine and cooling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093597.7A CN108150455A (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine and cooling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150455A true CN108150455A (en) | 2018-06-12 |
Family
ID=62459473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810093597.7A Pending CN108150455A (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine and cooling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150455A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196737A (en) * | 2014-09-01 | 2014-12-10 | 中国一冶集团有限公司 | Centrifugal fan |
| CN204663918U (en) * | 2015-05-26 | 2015-09-23 | 石福军 | A kind of large-scale dark transmission axle induced-draft fan group |
| CN205371095U (en) * | 2015-12-11 | 2016-07-06 | 石家庄金士顿轴承科技有限公司 | Centrifugal blower rotor forced air cooling system |
| CN107100720A (en) * | 2017-06-23 | 2017-08-29 | 黄石炫轺者动力科技有限公司 | A kind of lost pressure cooling system and the centrifugal supercharger with the cooling system |
| CN107313989A (en) * | 2016-11-28 | 2017-11-03 | 盾石磁能科技有限责任公司 | Magnetic suspension cfentrifugal blower air cooling system |
| CN207906159U (en) * | 2018-01-31 | 2018-09-25 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine |
-
2018
- 2018-01-31 CN CN201810093597.7A patent/CN108150455A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196737A (en) * | 2014-09-01 | 2014-12-10 | 中国一冶集团有限公司 | Centrifugal fan |
| CN204663918U (en) * | 2015-05-26 | 2015-09-23 | 石福军 | A kind of large-scale dark transmission axle induced-draft fan group |
| CN205371095U (en) * | 2015-12-11 | 2016-07-06 | 石家庄金士顿轴承科技有限公司 | Centrifugal blower rotor forced air cooling system |
| CN107313989A (en) * | 2016-11-28 | 2017-11-03 | 盾石磁能科技有限责任公司 | Magnetic suspension cfentrifugal blower air cooling system |
| CN107100720A (en) * | 2017-06-23 | 2017-08-29 | 黄石炫轺者动力科技有限公司 | A kind of lost pressure cooling system and the centrifugal supercharger with the cooling system |
| CN207906159U (en) * | 2018-01-31 | 2018-09-25 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine |
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