CN103807187B - A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed - Google Patents
A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed Download PDFInfo
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- CN103807187B CN103807187B CN201410085115.5A CN201410085115A CN103807187B CN 103807187 B CN103807187 B CN 103807187B CN 201410085115 A CN201410085115 A CN 201410085115A CN 103807187 B CN103807187 B CN 103807187B
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- high pressure
- fluidized bed
- centrifugal
- recirculating fluidized
- fan
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Abstract
The open a kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed of the present invention, including support, the centrifugal blower body being fixed on described support, connect inlet mechanism and the exit mechanism of described centrifugal blower body, described inlet mechanism includes the suction muffler being sequentially connected with, first pipeline, import butterfly valve, second pipe and import expansion joint, described exit mechanism includes the outlet non-return valve being sequentially connected with, 3rd pipeline, exit butterfly valve, 4th pipeline and outlet expansion joint, described centrifugal blower body includes supporting bearing base successively, rotor, thrust shaft block, shaft coupling and motor, it is nested with stator on described rotor.Disclosed a kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed have be simple to manufacture, loss in efficiency is little, energy-conservation, stable, noise is little, vibrate advantage low, that maintenance cost is low.
Description
Technical field
The present invention relates to a kind of fluidized air blower, particularly relate to a kind of 135 centrifugal hp fluid airs of MW recirculating fluidized bed
Machine.
Background technology
The most supporting employing Roots blower in 135MW Properties of CFB high pressure fluidization fan industry, with 300MW machine
Group compares, and 135MW generating capacity is the half of 300MW unit, and 135MW unit volume is less, and flow parameter is less, matching pot
The parameter of stove is less.
But it is relatively big that Roots blower is a kind of low pressure exhaust air rate, and inefficient blower fan, its flow changes little with blast
Become and change, i.e. flow is little affected by the impact of the resistance of ducting, as long as rotating speed keeps constant, flow is the most just basically unchanged, and is commonly called as
" hard wind ", is not suitable for variable working condition requirement, and its noise is relatively big, and have infrasonic wave, and operational shock is big, and maintenance cost is higher.
Compared with Roots blower, centrifugal blower is stable, it is little to vibrate, noise is low, variable working condition, maintenance cost are cheap,
But 135MW Properties of CFB boiler parameter is less, particularly flow is less, and blower fan inlet and outlet pressure ratio is the most higher, at present
Do not have be suitable for centrifugal blower meet this unit demand.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the invention provides a kind of 135MW recirculating fluidized bed centrifugal
High pressure fluidization fan, the Multi-stage centrifugal fan that it uses uses runner ultra-narrow impeller, thus realizes extra small flow.
It is an object of the invention to be realized by such technical scheme, a kind of centrifugal high pressure of 135MW recirculating fluidized bed
Fluidized air blower, including support, the centrifugal blower body being fixed on described support, connects the import machine of described centrifugal blower body
Structure and exit mechanism, described inlet mechanism includes the suction muffler being sequentially connected with, the first pipeline, import butterfly valve, second pipe
And import expansion joint, described exit mechanism includes the outlet non-return valve being sequentially connected with, the 3rd pipeline, exit butterfly valve, the 4th pipeline
And outlet expansion joint, described centrifugal blower body includes supporting bearing base, rotor, thrust shaft block, shaft coupling and motor successively,
Being nested with stator on described rotor, described stator includes air inlet volute, plural number dividing plate and exhaust volute, is formed between described dividing plate
Runner, described rotor includes main shaft, is fixed on the round nut on described main shaft, plural number axle sleeve, and plural number impeller and balancing frame are described
The exit width of impeller is 8mm.
Described 4th pipeline is also associated with exporting bypass valve and outlet bypass deafener.
It is provided with coupling guard outside described shaft coupling.
Described shaft coupling is diaphragm coupling.
Described exhaust volute sidewall is provided with return duct and is connected with described main shaft, to connect fan inlet and outlet.
Described dividing plate upper end is provided with transition arc.
Compared with prior art, disclosed a kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed, adopt
With multistage centrifugal blower, using 6 impellers, it has, and flow is little, efficiency is high, be simple to manufacture, loss in efficiency is little, energy-conservation, fortune
Line stabilization, noise are little, vibrate the advantages such as low, maintenance cost is low, and are analyzed by CFD and actual performance is tested its performance and reached
78%。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of stator of the present invention；
Fig. 3 is the structural representation of rotor of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing of the present invention, the technical scheme of the embodiment of the present invention is carried out clear, complete description.
As shown in Fig. 1 ~ 3, disclosed a kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed, including
Support 1, centrifugal blower body 2, inlet mechanism 3 and exit mechanism 4, wherein said centrifugal blower body 2 is solid by described support 1
Being scheduled on concrete pedestal, described inlet mechanism 3 connects the air inlet of described centrifugal blower body 2, and described exit mechanism 4 connects institute
State the air outlet of centrifugal blower body 2.
Particularly, described inlet mechanism 3 includes the suction muffler 31 being sequentially connected with, the first pipeline 32, import butterfly valve
33, second pipe 34 and import expansion joint 35, described import butterfly valve 33 is used for changing fan condition, it is simple to the change of flow, institute
Stating import expansion joint 35 to be connected by flange is fixing with the import of described centrifugal blower body 2, absorbing vibration damping is to reduce system pipes
The road impact to blower fan.
Described exit mechanism 4 includes the outlet non-return valve 41 being sequentially connected with, the 3rd pipeline 42, exit butterfly valve 43, the 4th pipe
Road 44 and outlet expansion joint 45, wherein said outlet non-return valve 41 is used for preventing gas backstreaming air inlet fan, causes blower fan rotation, institute
State the 4th pipeline 44 side to be also associated with exporting bypass valve 46 so that fan outlet is in the case of surge, by a part of pressure
It is vented by outlet bypass valve 46, reduces system pressure, it is to avoid surge region, simultaneously outlet bypass valve 46 connection outlet bypass
Deafener 47, reduces noise.
Described centrifugal blower 2 body includes supporting bearing base 21 successively, rotor 22, thrust shaft block 23, shaft coupling 24 and
Motor 25, described rotor 22 is nested with stator 26, and described stator 26 includes air inlet volute 261, plural number dividing plate 262 and aerofluxus snail
Shell 263, forms runner 264 between described dividing plate 262, described dividing plate 262 upper end is provided with transition arc 265, described in this structure
Runner 264 width is 10mm, owing to small flow area fan efficiency is low, after described dividing plate 262 upper end arranges transition arc 265
Make flow energy smooth outflow, described rotor 22 include main shaft 221, be fixed on the round nut 222 on described main shaft 221, plural number
Axle sleeve 223, plural number impeller 224 and balancing frame 225, described axle sleeve 223 and shown impeller 224 interval are arranged, and described impeller
A diameter of 670mm, exit width is 8mm, and described shaft coupling 24 is diaphragm coupling, and outside is provided with coupling guard 27.
Described exhaust volute 263 sidewall is provided with return duct 28 and is connected with described main shaft 221, to connect fan inlet and to go out
Mouthful, balance blower fan axial force, reduce bearing loss.
Disclosed a kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed, has broken 135MW recycle stream
Change bed unit high pressure fluidization fan and all use the monopoly position of Roots blower, and power station high pressure fluidization fan is run more
Add stable, vibration is less, noise is lower, maintenance cost is substantially reduced, and its energy variable working condition, for power station its can not
Again purchasing blower fan, this centrifugal blower meets variable working condition demand on a large scale, and by low discharge fan efficiency, the most multistage
Centrifugal blower efficiency brings up to the height of 78%, makes also relative ease.
The technology contents of the present invention and technical characteristic have revealed that as above, but those of ordinary skill in the art still may base
Make all replacements without departing substantially from spirit of the present invention and modification in the announcement of the present invention, therefore, scope should not limit
In the content disclosed in embodiment, and the various replacement without departing substantially from the present invention and modification should be included, and be present patent application right
Require to be contained.
Claims (5)
1. the centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed, including support, the centrifugal wind being fixed on described support
Machine body, connects inlet mechanism and the exit mechanism of described centrifugal blower body, it is characterised in that: described inlet mechanism includes depending on
The suction muffler of secondary connection, the first pipeline, import butterfly valve, second pipe and import expansion joint, described exit mechanism includes depending on
The outlet non-return valve of secondary connection, the 3rd pipeline, exit butterfly valve, the 4th pipeline and outlet expansion joint, described centrifugal blower body depends on
The secondary supporting bearing base that includes, rotor, thrust shaft block, shaft coupling and motor, described rotor is nested with stator, described stator bag
Including air inlet volute, plural number dividing plate and exhaust volute, form runner between described dividing plate, described rotor includes main shaft, is fixed on institute
Stating the round nut on main shaft, plural number axle sleeve, plural number impeller and balancing frame, the exit width of described impeller is 8mm；Described aerofluxus snail
Shell side wall is provided with return duct and is connected with described main shaft, to connect fan inlet and outlet.
The centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed the most according to claim 1, it is characterised in that: described
Four pipelines are also associated with exporting bypass valve and outlet bypass deafener.
The centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed the most according to claim 1, it is characterised in that: described
Coupling guard it is provided with outside axial organ.
The centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed the most according to claim 1, it is characterised in that: described
Axial organ is diaphragm coupling.
The centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed the most according to claim 1, it is characterised in that: described every
Plate upper end is provided with transition arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085115.5A CN103807187B (en) | 2014-03-10 | 2014-03-10 | A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085115.5A CN103807187B (en) | 2014-03-10 | 2014-03-10 | A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103807187A CN103807187A (en) | 2014-05-21 |
| CN103807187B true CN103807187B (en) | 2016-08-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410085115.5A Active CN103807187B (en) | 2014-03-10 | 2014-03-10 | A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702671A (en) * | 1985-05-30 | 1987-10-27 | General Electric Company | Slip ring expansion joint |
| CN2802138Y (en) * | 2005-06-14 | 2006-08-02 | 南通金通灵风机有限公司 | High pressure fluidization fan for set of 300MW power station |
| CN201344554Y (en) * | 2008-12-31 | 2009-11-11 | 上海鼓风机厂有限公司 | Cooling device for power station boiler blower |
| CN201650858U (en) * | 2010-03-24 | 2010-11-24 | 南通大通宝富风机有限公司 | Double-impeller rotor |
| CN101922467A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifugal blower |
| CN102400958A (en) * | 2011-11-18 | 2012-04-04 | 南通大通宝富风机有限公司 | Multifunctional nuclear power fan |
| CN103527502A (en) * | 2013-10-18 | 2014-01-22 | 丹阳市正大油脂有限公司 | High pressure fluidization fan with alarming function |
| CN203770160U (en) * | 2014-03-10 | 2014-08-13 | 南通大通宝富风机有限公司 | Centrifugal high voltage fluidization fan of 135 MW circulating fluidized bed |
-
2014
- 2014-03-10 CN CN201410085115.5A patent/CN103807187B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702671A (en) * | 1985-05-30 | 1987-10-27 | General Electric Company | Slip ring expansion joint |
| CN2802138Y (en) * | 2005-06-14 | 2006-08-02 | 南通金通灵风机有限公司 | High pressure fluidization fan for set of 300MW power station |
| CN201344554Y (en) * | 2008-12-31 | 2009-11-11 | 上海鼓风机厂有限公司 | Cooling device for power station boiler blower |
| CN201650858U (en) * | 2010-03-24 | 2010-11-24 | 南通大通宝富风机有限公司 | Double-impeller rotor |
| CN101922467A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifugal blower |
| CN102400958A (en) * | 2011-11-18 | 2012-04-04 | 南通大通宝富风机有限公司 | Multifunctional nuclear power fan |
| CN103527502A (en) * | 2013-10-18 | 2014-01-22 | 丹阳市正大油脂有限公司 | High pressure fluidization fan with alarming function |
| CN203770160U (en) * | 2014-03-10 | 2014-08-13 | 南通大通宝富风机有限公司 | Centrifugal high voltage fluidization fan of 135 MW circulating fluidized bed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103807187A (en) | 2014-05-21 |
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