CN205977783U - Coal fired power plant denitration high temperature booster fan - Google Patents
Coal fired power plant denitration high temperature booster fan Download PDFInfo
- Publication number
- CN205977783U CN205977783U CN201620992247.0U CN201620992247U CN205977783U CN 205977783 U CN205977783 U CN 205977783U CN 201620992247 U CN201620992247 U CN 201620992247U CN 205977783 U CN205977783 U CN 205977783U
- Authority
- CN
- China
- Prior art keywords
- casing
- gland
- static seal
- power plant
- main shaft
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a fan technical field, in particular to high temperature booster fan that is used for coal fired power plant deNOx systems, include the main shaft, set up at main epaxial impeller, bearing box and casing that the bearing box setting is on the base, the impeller setting is provided with seal assembly between main shaft and the casing in the casing, be provided with cooling module between main shaft and the bearing box, seal assembly includes fastener, static seal cover and the gland of fixed connection on the casing, and static seal cover and gland all overlap to be established on the impeller shaft, and fastener is used for overlapping fixed connection with the static seal and at fastener, is provided with the sealing ring between static seal cover and the fan mainshaft, gland one end press the sealing ring, the other end and static seal cover fixed connection. The utility model discloses fan operating temperature is 300 DEG C ~420 DEG C, carries the amount of wind at 800~2500Nm3h, and pressure is at 5~12KPa, and sealing performance is good, and bearing installation position locates the temperature and is less than 60 DEG C through heat -sink cooling rear spindle on, can satisfy coal fired power plant deNOx systems's operation requirement.
Description
Technical field
This utility model is related to blower fan technical field, particularly to a kind of high temperature pressurised for coal-burning power plant's denitrating system
Blower fan.
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.
Utility model content
The purpose of this utility model 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, sealing, cooling performance are good, can effectively ensure that sealing during fan operation, stability and safety.
For solving above-mentioned technical problem, this utility model 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.
This utility model 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 this utility model structural representation.
Fig. 2 is structural representation at I in Fig. 1.
Fig. 3 is casing mounting structure schematic diagram in this utility model.
Fig. 4 is this utility model right view.
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
With specific embodiment, this utility model is further described 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 this utility model high temperature pressurised blower fan work temperature3/
H, in 5～12KPa, good seal performance, heat dissipation plate enhances its heat-sinking capability with main shaft rotation to pressure, main shaft after cooling
Upper bearing (metal) installed position temperature is less than 60 DEG C, can meet the use requirement of coal-burning power plant's denitrating system.
Specification and drawings of the present utility model are considered as illustrative and not restrictive, open in this utility model
Technical scheme on the basis of, those skilled in the art according to disclosed technology contents it is not necessary to performing creative labour just
Some of them technical characteristic can be made with some replace and deform, these are replaced and deformation is all in protection model of the present utility model
In enclosing.
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 |
|---|---|---|---|
| CN201620992247.0U CN205977783U (en) | 2016-08-30 | 2016-08-30 | Coal fired power plant denitration high temperature booster fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620992247.0U CN205977783U (en) | 2016-08-30 | 2016-08-30 | Coal fired power plant denitration high temperature booster fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977783U true CN205977783U (en) | 2017-02-22 |
Family
ID=58041976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620992247.0U Active CN205977783U (en) | 2016-08-30 | 2016-08-30 | Coal fired power plant denitration high temperature booster fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977783U (en) |
-
2016
- 2016-08-30 CN CN201620992247.0U patent/CN205977783U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106438448A (en) | Denitration high-temperature boosting fan for fuel coal power plant | |
| CN2764979Y (en) | Draught fan sealing device | |
| CN205977783U (en) | Coal fired power plant denitration high temperature booster fan | |
| CN101034837A (en) | Security-enhanced three-phase asynchronous motor for mine | |
| CN207111483U (en) | A kind of pipeline fan of dust-proof radiating | |
| CN205744511U (en) | A kind of injecting type pressure fan | |
| CN214304462U (en) | Fan axle end heat insulation structure | |
| CN107143507A (en) | Technique blower fan and technique blower fan system | |
| CN203783923U (en) | Centrifugal ventilator | |
| CN211202412U (en) | Gas ventilator interface structure | |
| CN206092490U (en) | Axial fan heavy -duty bearing case group | |
| CN201496993U (en) | Radial seal component of hot end of revolving air pre-heater rotor | |
| CN211344018U (en) | Circumferential sealing device for head of sector plate of air preheater | |
| CN114110644B (en) | Heating surface rotary air preheater and sealing assembly and preparation method thereof | |
| CN2756965Y (en) | Wind leaking-proof structure of boiler wind room | |
| CN2927472Y (en) | Gas-turbine generator | |
| CN2699065Y (en) | Graphite lubrication sheet steel sealing device | |
| CN205482389U (en) | Dust pelletizing system of hot stove in ore deposit | |
| CN208475632U (en) | A kind of hot-blast stove waste-heat recovery device | |
| CN215003152U (en) | Soft sealing device for reducing air leakage rate of air preheater | |
| CN214788174U (en) | Shaft hole sealing device for fan shell | |
| CN206054374U (en) | Urea pyrolysis superhigh temperature blower fan | |
| CN220366712U (en) | Pellet sintering belt cooler sealing dust collection cover | |
| CN2113264U (en) | Clearance transforming valve shutting off device | |
| CN219587822U (en) | Shaft end sealing and isolating device for high-temperature flue gas centrifugal fan shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |