CN207906159U - A kind of heat power plant boiler air-introduced machine - Google Patents
A kind of heat power plant boiler air-introduced machine Download PDFInfo
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- CN207906159U CN207906159U CN201820172806.2U CN201820172806U CN207906159U CN 207906159 U CN207906159 U CN 207906159U CN 201820172806 U CN201820172806 U CN 201820172806U CN 207906159 U CN207906159 U CN 207906159U
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- draft fan
- cooling wind
- introduced machine
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Abstract
A kind of heat power plant boiler air-introduced machine, 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 to by blast pipe respectively with cooling wind air inlet, the other end is connected to by discharge pipe with female air hose respectively, 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 utility model is related to a kind of heat power plant boiler air-introduced machines.
Background technology
Air-introduced machine is the Important Auxiliary equipment of heat power plant boiler, and mainly the high-temperature flue gas to burn in boiler is discharged, 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 mostly uses axial fan, 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 mostly uses fan bearing room 11 of the centrifugal blower 21 to axle induced-draft fan 1
With 12 inside air blast of cylinder chamber, then fan bearing room 11 and cylinder chamber 12 are cold by being arranged on axle induced-draft fan 1
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, contain 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 passes through clearance leakage to fan bearing room 11 and cylinder chamber
12, and the wind blasted with centrifugal blower 21 is discharged together, since sulfureous in flue gas part is higher, causes to corrode to peripheral equipment, to ring
Border causes to seriously affect, while influencing the health of operating personnel, therefore, by 21 wind turbine of small-sized centrifugation carry out it is cooling in the way of deposit
In higher operating cost and the cost of overhaul.
Utility model content
In view of the deficiencies of the prior art the utility model proposes a kind of good cooling results, high-temperature flue gas is effectively limited
Leakage, alleviates the corrosion of equipment, reduces the heat power plant boiler of the operation of small-sized centrifugation cooling blower and maintenance cost with drawing
Wind turbine.
The purpose of this utility model 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 to by blast pipe respectively with cooling wind air inlet, and the other end passes through outlet air respectively
Pipe is connected to 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,
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 leak into outside wind turbine again, to prevent to week
Edge equipment causes to corrode.
The cooling wind air outlet of mother's air hose is the trumpet type that diameter is more than female dust 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.To prevent sundries from entering cooling air channel.
Since using the above structure, the present apparatus has as follows a little：
1, the better cooling effect of more former mode can be reached, bearing housing temperature reduces 2-4 DEG C.
2, the effective leakage for limiting high-temperature flue gas alleviates the burn into of equipment to air-introduced machine follow-up system without influence.
3, small-sized centrifugation cooling blower operation and maintenance cost are eliminated, 40,000 yuan can be saved every year.
4, it contributes compared to relatively negligible compared with air-introduced machine because of cooling air quantity, 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 structural schematic diagram of existing axle induced-draft fan.
Fig. 2 is the structural schematic diagram of the utility model.
In attached drawing：1-axle induced-draft fan, 11-fan bearing rooms, 12-cylinder chambers, 13-air inlets, 14-go out
Air port, 15-wheel hubs, 16-casings, 21-centrifugal blowers, 22-discharge pipes, 23-cooling wind exhaust outlets, 24-cooling winds into
Air port, 25-strainers, 26-valves, 27-female air hoses, 28-cooling wind air outlets.
Specific implementation mode
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 is connected to, and the other end is connected to by discharge pipe 22 with female air hose 27 respectively, 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 that diameter is more than female air hose
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.
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 setting mother air hose 27, the other end of female air hose 27 is connected with the air duct of centrifugal blower 21 in mouthful,
It installs valve additional at the pipeline that centrifugal blower is connect with air duct, 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.
Above-mentioned is preferred embodiments of the present invention, but those skilled in the art should be understood that and not depart from
In the spirit and scope of the utility model defined by the appended claims, the utility model is made in form and details
The various change gone out, belongs to the scope of protection of the utility model.
Claims (4)
1. a kind of heat power plant boiler air-introduced machine, including axle induced-draft fan, the axle induced-draft fan are 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 be equipped with cooling wind into
One end of air port, the fan bearing room and cylinder chamber is connected to by blast pipe respectively with cooling wind air inlet, the other end point
It is not connected to female air hose by discharge pipe, the air inlet in axle induced-draft fan is arranged in the cooling wind air outlet of mother's air hose
It is interior.
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 the trumpet type that diameter is more than female dust 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820172806.2U CN207906159U (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820172806.2U CN207906159U (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906159U true CN207906159U (en) | 2018-09-25 |
Family
ID=63562798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820172806.2U Active CN207906159U (en) | 2018-01-31 | 2018-01-31 | A kind of heat power plant boiler air-introduced machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207906159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150455A (en) * | 2018-01-31 | 2018-06-12 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine and cooling means |
-
2018
- 2018-01-31 CN CN201820172806.2U patent/CN207906159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150455A (en) * | 2018-01-31 | 2018-06-12 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine and cooling means |
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