CN106438448A - Denitration high-temperature boosting fan for fuel coal power plant - Google Patents
Denitration high-temperature boosting fan for fuel coal power plant Download PDFInfo
- Publication number
- CN106438448A CN106438448A CN201610763948.1A CN201610763948A CN106438448A CN 106438448 A CN106438448 A CN 106438448A CN 201610763948 A CN201610763948 A CN 201610763948A CN 106438448 A CN106438448 A CN 106438448A
- Authority
- CN
- China
- Prior art keywords
- gland
- casing
- main shaft
- power plant
- blower fan
- 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.)
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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
- F04D29/08—Sealings
- F04D29/083—Sealings especially 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
Abstract
The invention relates to the technical field of fans, in particular to a high-temperature boosting fan for a denitration system of a fuel coal power plant. The high-temperature boosting fan comprises a main shaft, an impeller disposed on the main shaft, a bearing box and an enclosure. The bearing box is disposed on a base, the impeller is disposed in the enclosure, a sealing component is disposed between the main shaft and the enclosure, and a cooling component is disposed between the main shaft and the bearing box; the sealing component comprises a fastening device fixedly connected on the enclosure, a static sealing cover and a gland; the static sealing cover and the gland both sleeve an impeller shaft, the fastening device is used for fixedly connecting the static sealing cover on the fastening device, a sealing ring is disposed between the static sealing cover and a fan main shaft, one end of the gland presses the sealing ring, and the other end of the gland is fixedly connected to the static sealing cover. A working temperature of the denitration high-temperature boosting fan is 300-420 DEG C, a conveying air volume is 800-2500Nm<3>/h, a pressure is 5-12KPa, the sealing property is good, temperature of a mounting position of a bearing on the main shaft after radiating and cooling is smaller than 60 DEG C, and use demands of the denitration system of the fuel coal power plant can be met.
Description
Technical field
The present invention relates to blower fan technical field, particularly to a kind of high temperature pressurised wind for coal-burning power plant's denitrating system
Machine.
Background technology
Coal-burning power plant reaches atmosphere pollutants emission standardses (GB13271-2014) to ensure boiler smoke, needs to pot
Kiln gas is processed, and generally first by after air preheater hot blast (hot blast temperature is 300 DEG C～420 DEG C) pressurized treatments during process, incites somebody to action
Hot blast is sent into denitrating system and is processed.Because flue-gas temperature is higher, pressure is larger, close in operation process for ensureing blower fan
Envelope property and the stability of blower fan operating, need the structure of blower fan is optimized.
Content of the invention
The purpose of the present invention is providing a kind of coal-burning power plant's denitration high temperature pressurised blower fan, and its operating temperature is up to 450 DEG C, close
Envelope, cooling performance are good, can effectively ensure that sealing during fan operation, stability and safety.
For solving above-mentioned technical problem, present invention employs technical scheme below：
Coal-burning power plant's denitration high temperature pressurised blower fan, including main shaft, the impeller being arranged on main shaft, bearing housing and casing, institute
State bearing housing to be arranged on base, described impeller is arranged in casing, between described main shaft and casing, be provided with black box, main
It is provided with cooling assembly between axle and bearing housing；Clamp device that described black box includes being fixedly connected in casing, quiet close
Big envelope and gland, described static seal gland and gland are all set in impeller axle, and described clamp device is used for fixing static seal gland
Connect on the fastener means, between described static seal gland and blower fan main shaft, be provided with sealing ring, the compression sealing of described gland one end
Ring, the other end is fixedly connected with static seal gland.
In technique scheme, further, described clamp device includes fixed seat and the elasticity being connected in fixed seat
Pressing plate, described spring bearer plate is peripherally disposed in fixed seat, and described spring bearer plate is provided with connecting hole, each connecting hole
Inside it is provided with fastening bolt, fastening bolt one end is fixedly connected in fixed seat, and the other end is provided with clamp nut.
In technique scheme, further, static seal gland is fixed and clamped in fixed seat described spring bearer plate, described
It is provided with elevated-temperature seal pad between fixed seat and static seal gland.
In technique scheme, further, described elevated-temperature seal pad adopts asbestos board.
In technique scheme, further, described sealing ring adopts immersion oil asbestos packing.
In technique scheme, further, described gland section is L-type, and gland one end is stretched into will be close in static seal gland
Seal ring compresses, and the other end is fixedly connected with static seal gland by bolt, is provided between described sealing ring and static seal gland end face
Certain gap.
In technique scheme, further, described cooling assembly includes the heat dissipation plate being arranged on main shaft, on heat dissipation plate
It is provided with radiating fin.
In technique scheme, further, described casing includes upper casing and lower casing, the knot of upper casing and lower casing
Close the horizontal plane that end face is located at main-shaft axis, the combination end face of upper casing and lower casing be provided with ring flange, upper casing and
Connected by ring flange between lower casing, base is provided with support base, described casing is fixedly mounted on support by ring flange
On seat.
The present invention is had the advantage that：
1) sealing of blower fan and cooling are achieved so as to be applicable to 300 DEG C～420 using black box and cooling assembly
The process of DEG C flue gas；Sealed using immersion oil asbestos packing in black box, immersion oil asbestos packing acts in the pressure of cover plate
Fitting tightly and impeller spindle between down, thus preventing the leakage of high-temperature flue gas, asbestos can be reduced after asbestos packing immersion oil simultaneously
Frictional force between packing and main shaft, reduces the abrasion of packing, improves sealing property and the service life of asbestos packing.
2) in the fixation of fan casing by the way of its center is supported, solve traditional bottom supporting way and deposit
High temperature casing expand countershaft sealing property impact, during using being supported to casing center, the upper casing of casing and under
Casing respectively to casing center the direction of both sides up and down expand, thus not sealing is impacted it is ensured that blower fan close
Sealing property.
Brief description
Fig. 1 is present configuration schematic diagram.
Fig. 2 is structural representation at I in Fig. 1.
Fig. 3 is casing mounting structure schematic diagram in the present invention.
Fig. 4 is right view of the present invention.
In figure：1st, main shaft, 2, impeller, 3, bearing housing, 4, casing, 41, upper casing, 42, lower casing, 43, ring flange, 5, bottom
Seat, 6, clamp device, 61, fixed seat, 62, spring bearer plate, 63, fastening bolt, 64, clamp nut, 7, static seal gland, 8, pressure
Lid, 11, sealing ring, 12, elevated-temperature seal pad, 13, heat dissipation plate, 14, radiating fin, 15, support base.
Specific embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
As Fig. 1, denitration high temperature pressurised blower fan in coal-burning power plant's in the present embodiment, including main shaft 1, the impeller 2 that is arranged on 1,
Bearing housing 3 and casing 4, main shaft 1 is arranged in bearing housing 3, is attached by bearing；Bearing housing 3 is arranged on base 5, leaf
Wheel 2 is arranged in casing 4；Main shaft 1 one end is provided with shaft coupling, and motor is rotated by shaft coupling drive shaft 1, main shaft main shaft 1
It is provided with black box and casing 4 between, for sealing to main shaft and casing；It is provided with cold between main shaft 1 and bearing housing 3
But assembly, for cooling down, reduces the temperature of main shaft upper bearing (metal) installed position to main shaft.
As Fig. 1 and 2, in the present embodiment, black box includes clamp device 6, the static seal gland 7 being fixedly connected in casing 4
With gland 8, static seal gland 7 and gland 8 be all set in impeller axle, and clamp device 6 is used for being fixedly connected on tightly static seal gland 7
It is fixedly mounted with and puts on 6, between static seal gland 7 and blower fan main shaft 1, be provided with sealing ring 11, gland 8 one end compresses sealing ring 11, the other end
It is fixedly connected with static seal gland 7.
Specifically, in the present embodiment, such as Fig. 2, clamp device 6 includes fixed seat 61 and the elasticity being connected in fixed seat 61
Pressing plate 62, spring bearer plate 62 is folded structure, and this folded structure one end is welded in fixed seat 61, and spring bearer plate 62 is in fixed seat
Peripherally disposed on 61, spring bearer plate 62 is provided with connecting hole, is provided with fastening bolt 63 in each connection in the hole, tightly
Fixing bolt 63 one end is fixedly connected in fixed seat 61, and the other end is provided with clamp nut 64.Turn clamp nut, clamp nut edge
Fastening bolt moves downward the free end of compression spring bearer plate, and static seal gland is fixed and clamped and is fixing by the free end of spring bearer plate
On seat.
Static seal gland 7 is fixed and clamped in fixed seat 61 above-mentioned spring bearer plate 62, fixed seat 61 and static seal gland 7 it
Between elevated-temperature seal pad is set, the gap between fixed seat and sealing shroud is sealed, prevents high-temperature flue gas from fixed seat and close
Reveal between big envelope.In the present embodiment, elevated-temperature seal pad adopts asbestos board.
Preferably, sealing ring 11 adopts immersion oil asbestos packing.Sealed using immersion oil asbestos packing in black box, leaching
Oily asbestos packing fits tightly under the pressure effect of cover plate and impeller spindle between, thus preventing the leakage of high-temperature flue gas, with
When asbestos packing immersion oil after can reduce frictional force between asbestos packing and main shaft, reduce the abrasion of packing, improve sealing
Energy and the service life of asbestos packing.
In black box, gland 8 section is L-type, and gland 8 one end is stretched in static seal gland 7 and compressed sealing ring 11, another
End is fixedly connected with static seal gland 7 by bolt, is provided with certain between immersion oil asbestos packing and static seal gland 7 end face simultaneously
Gap.Blower fan, after running a period of time, weares and teares between asbestos packing and fan shaft, has influence on the sealing of asbestos packing
Performance, now only needs to tighten bolt, makes gland compress asbestos packing, so that asbestos packing is deformed and impeller axle between again
Fit tightly, realize the sealing of blower fan.
In the present embodiment, cooling assembly includes the heat dissipation plate 13 being arranged on main shaft 1, and heat dissipation plate 13 is provided with heat radiating fin
Piece 14.
Casing 4 includes upper casing 41 and lower casing 42, and the combination end face of upper casing 41 and lower casing 42 is located at main-shaft axis
Horizontal plane, the combination end face of upper casing 41 and lower casing 42 is provided with ring flange 43, upper casing 41 and lower casing 41 it
Between connected by ring flange 43, base 5 is provided with support base 15, casing 4 is fixedly mounted on support base 15 by ring flange 43
On, realize the central supported to casing.By the way of casing center is supported, solves traditional bottom supporting way and deposit
High temperature casing expand the impact of countershaft sealing property, when casing center is supported, the upper casing of casing and lower casing
Respectively to casing center the direction of both sides up and down expand, thus not shaft seal clearance is impacted it is ensured that blower fan close
Sealing property.
, at 300 DEG C～420 DEG C, conveying air quantity is in 800～2500Nm for high temperature pressurised blower fan work temperature of the present invention3/ h, pressure
In 5～12KPa, good seal performance, heat dissipation plate enhances its heat-sinking capability with main shaft rotation to power, main shaft upper shaft after cooling
Hold installed position temperature and be less than 60 DEG C, the use requirement of coal-burning power plant's denitrating system can be met.
The specification and drawings of the present invention are considered as illustrative and not restrictive, in technical side disclosed by the invention
On the basis of case, those skilled in the art is according to disclosed technology contents it is not necessary to performing creative labour just can be to it
In some technical characteristics make some replace and deform, these replace and deformation all within the scope of the present invention.
Claims (8)
1. coal-burning power plant's denitration high temperature pressurised blower fan it is characterised in that：Including main shaft, the impeller being arranged on main shaft, bearing housing
And casing, described bearing housing is arranged on base, and described impeller is arranged in casing, is provided with close between described main shaft and casing
Sealing assembly, is provided with cooling assembly between main shaft and bearing housing；Described black box includes the fastening being fixedly connected in casing
Device, static seal gland and gland, described static seal gland and gland are all set in impeller axle, and described clamp device is used for will be quiet close
Big envelope is fixedly connected on the fastener means, is provided with sealing ring between described static seal gland and blower fan main shaft, described gland one end
Compression sealing ring, the other end is fixedly connected with static seal gland.
2. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 1 it is characterised in that：Described clamp device includes
Fixed seat and the spring bearer plate being connected in fixed seat, described spring bearer plate is peripherally disposed in fixed seat, described bullet
Property pressing plate on be provided with connecting hole, each in the hole that connects is provided with fastening bolt, and fastening bolt one end is fixedly connected in fixed seat,
The other end is provided with clamp nut.
3. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 2 it is characterised in that：Described spring bearer plate will be quiet
Sealing shroud is fixed and clamped in fixed seat, is provided with elevated-temperature seal pad between described fixed seat and static seal gland.
4. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 3 it is characterised in that：Described elevated-temperature seal pad is adopted
Use asbestos board.
5. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 1 it is characterised in that：Described sealing ring is using leaching
Oily asbestos packing.
6. according to claim 1 or 5 coal-burning power plant's denitration high temperature pressurised blower fan it is characterised in that：Described gland section
For L-type, gland one end is stretched in static seal gland and is compressed sealing ring, and the other end is fixedly connected with static seal gland by bolt, institute
State and between sealing ring and static seal gland end face, be provided with certain gap.
7. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 1 it is characterised in that：Described cooling assembly includes
It is arranged on the heat dissipation plate on main shaft, heat dissipation plate is provided with radiating fin.
8. denitration high temperature pressurised blower fan in coal-burning power plant's according to claim 1 it is characterised in that：Described casing includes machine
The combination end face of shell and lower casing, upper casing and lower casing is located at the horizontal plane of main-shaft axis, the combination of upper casing and lower casing
Ring flange is provided with end face, is connected by ring flange between upper casing and lower casing, base is provided with support base, described
Casing is fixedly mounted on support base by ring flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763948.1A CN106438448A (en) | 2016-08-30 | 2016-08-30 | Denitration high-temperature boosting fan for fuel coal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763948.1A CN106438448A (en) | 2016-08-30 | 2016-08-30 | Denitration high-temperature boosting fan for fuel coal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438448A true CN106438448A (en) | 2017-02-22 |
Family
ID=58091901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610763948.1A Pending CN106438448A (en) | 2016-08-30 | 2016-08-30 | Denitration high-temperature boosting fan for fuel coal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438448A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
| CN112081755A (en) * | 2020-03-26 | 2020-12-15 | 合肥丰蓝电器有限公司 | Low-temperature fan |
| CN113357163A (en) * | 2021-07-08 | 2021-09-07 | 武汉船用机械有限责任公司 | Hydraulic deep well pump impeller locking device and installation method thereof |
| CN113513591A (en) * | 2021-08-13 | 2021-10-19 | 重庆通用工业(集团)有限责任公司 | Adjustable sealing device |
-
2016
- 2016-08-30 CN CN201610763948.1A patent/CN106438448A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
| CN108980349B (en) * | 2018-09-20 | 2024-02-06 | 重庆通用工业(集团)有限责任公司 | Composite seal for centrifugal fan |
| CN112081755A (en) * | 2020-03-26 | 2020-12-15 | 合肥丰蓝电器有限公司 | Low-temperature fan |
| CN113357163A (en) * | 2021-07-08 | 2021-09-07 | 武汉船用机械有限责任公司 | Hydraulic deep well pump impeller locking device and installation method thereof |
| CN113513591A (en) * | 2021-08-13 | 2021-10-19 | 重庆通用工业(集团)有限责任公司 | Adjustable sealing device |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |