CN206496342U - A kind of adjustable Secondary Air air inlet structure of CFBB - Google Patents
A kind of adjustable Secondary Air air inlet structure of CFBB Download PDFInfo
- Publication number
- CN206496342U CN206496342U CN201621443302.7U CN201621443302U CN206496342U CN 206496342 U CN206496342 U CN 206496342U CN 201621443302 U CN201621443302 U CN 201621443302U CN 206496342 U CN206496342 U CN 206496342U
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- CN
- China
- Prior art keywords
- secondary air
- air
- controllable register
- inlet structure
- air inlet
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Abstract
The utility model discloses a kind of adjustable Secondary Air air inlet structure of CFBB, including：Air quantity controller and boiler, the air quantity controller are connected with boiler, and the air quantity controller includes：Spout framework, fixing axle is provided with the spout framework, controllable register is hinged with the fixing axle, the controllable register bottom is provided with jacking apparatus, the jacking apparatus can change angle of the controllable register relative to spout framework axis, set by such, controllable register one end is hinged with fixing axle, one end can change the height of air outlet in the presence of jacking apparatus, the size of air outlet can be changed simultaneously, wind velocity so as to change, existing circulating fluid bed boiler secondary air nozzle is overcome to realize the defect of nozzle height and angle adjustable, the overfire air device that a kind of height and angle are adjusted in synchronism with the size of secondary air flow is provided.
Description
Technical field
The utility model is related to field of boilers, more particularly to a kind of adjustable Secondary Air air intake knot of CFBB
Structure.
Background technology
With the raising of environmental requirement, to lower boiler Nox discharge, boiler low-NO_x combustion technology is in the operation of boiler
Play vital effect.
Circulating fluid bed boiler secondary air enters burner hearth, the sky needed for supplement fuel combustion from wind-distributing bed top concentrated phase area
Gas, to ensure that Secondary Air is sufficiently mixed into burner hearth interior energy, it is to avoid made because of oxygen amount deficiency in the middle part of local excess oxygen and burner hearth
Into NOx generation amount is big and fuel can not clean-burning situation, it is desirable to which Secondary Air has suitable flow velocity, to ensure that it is enough that it has
Momentum, just has enough penetration powers when spraying into burner hearth.Boiler is in design, and overfiren air port area and penetrating angle and height are all
Required secondary air flow and rational flow velocity carry out calculating selection when being by rated load.Boiler in oepration at full load,
The penetration power of Secondary Air can ensure that it is sufficiently mixed in burner hearth, can effectively reduce NOx emission concentration and keep higher burning
Efficiency.
CFBB operation ensures fluidisation using First air, during load change, is adjusted by adjusting secondary air flow
Oxygen amount.In actual use, with production requirement, load fluctuation is big for boiler, it is often necessary in underrun, now First air
It is basically unchanged, and secondary air flow is reduced, conventional overfire air device is unadjustable, and its actual internal area is determined, secondary air flow drop subtracts
Few, flow velocity is low, momentum weakens, it is impossible to is effectively penetrated into the middle part of burner hearth, causes burner hearth central area anoxic and surrounding excess oxygen,
Cause emission of NOx of boiler concentration higher, efficiency of combustion reduction.
Accordingly, it would be desirable to which a kind of variable height and the overfire air device of variable penetrating angle, solve boiler at low load and load
The caused Secondary Air flow velocity reduction momentum of change is not enough, oxygen amount is uneven, NOx emission concentration is higher and efficiency of combustion is low asks
Topic.
The content of the invention
The purpose of this utility model is：Overcome the above-mentioned problems in the prior art, propose a kind of recirculating fluidized bed
Boiler is adjustable Secondary Air air inlet structure, overcomes existing circulating fluid bed boiler secondary air nozzle to realize nozzle height and angle
Spending adjustable defect, there is provided the overfire air device that a kind of height and angle are adjusted in synchronism with the size of secondary air flow.
The purpose of this utility model is realized by following technical proposals：
A kind of adjustable Secondary Air air inlet structure of CFBB, including：Air quantity controller and boiler, the wind
Amount control device is connected with boiler, and the air quantity controller includes：Fixing axle is provided with spout framework, the spout framework,
Controllable register is hinged with the fixing axle, the controllable register bottom is provided with jacking apparatus, and the jacking apparatus can change
Controllable register is set, controllable register one end is hinged with fixing axle, one end relative to the angle of spout framework axis by such
The height of air outlet can be changed in the presence of jacking apparatus, while the size of air outlet can be changed, so as to change air-out
Speed.
It is provided with the adjustable Secondary Air air inlet structure of a kind of CFBB of the present utility model, the spout framework
Deflector, described deflector one end is connected with spout framework bottom, and the deflector other end is connected with controllable register.
A kind of adjustable Secondary Air air inlet structure of CFBB of the present utility model, the jacking apparatus includes：Electricity
Dynamic propulsion plant, the electricpropulsion installation is provided with catch bar, and the catch bar is connected through spout framework with controllable register
Connect.
It is set with outside the adjustable Secondary Air air inlet structure of a kind of CFBB of the present utility model, the catch bar
There is sealing guide pin bushing, the sealing guide pin bushing top top holds out against spout framework bottom.
The adjustable Secondary Air air inlet structure of a kind of CFBB of the present utility model, the deflector material is not
Become rusty steel, and described deflector one end is welded with spout framework bottom, and the deflector other end controllable register is close to fixing axle one end
Overlap joint.
The adjustable Secondary Air air inlet structure of a kind of CFBB of the present utility model, the controllable register relative to
The angular range that spout framework axis is rotated is 0-30 degree.
The adjustable Secondary Air air inlet structure of a kind of CFBB of the present utility model, the controllable register end top
The radius of the height not more than spout framework risen.
According to above-mentioned technical proposal, the beneficial effects of the utility model are：Propose a kind of CFBB adjustable two
Secondary wind air inlet structure, by jacking apparatus controllable register angle, changes overfiren air port height, flow area is adjusted, so as to reach
Secondary Air section is adjusted in synchronism with secondary air flow, can also ensure suitable Secondary Air flow velocity in underload, it is ensured that Secondary Air has
Enough penetration powers, make Secondary Air be sufficiently mixed in stove, effectively reduction NOx emission concentration, by controllable register angle, change
Secondary Air sprays into the angle of burner hearth, the height that regulation Secondary Air is sprayed into stove, so that the ignition temperature of lower furnace portion is improved, it is beneficial
In the after-flame of fuel.
Brief description of the drawings
Fig. 1 is a kind of adjustable Secondary Air air inlet structure schematic diagram of CFBB of the utility model；
Fig. 2 is sectional view along AA in Fig. 1；
Fig. 3 is that a kind of adjustable Secondary Air air inlet structure of CFBB of the utility model uses schematic diagram.
Embodiment
The utility model is further described with reference to specific embodiments and the drawings.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
Such as the embodiment that Fig. 1 is a kind of adjustable Secondary Air air inlet structure of CFBB of the utility model, one kind is followed
Circulation fluidized bed boiler is adjustable Secondary Air air inlet structure, including：Air quantity controller and boiler 6, the air quantity controller and pot
Stove 6 is connected, and the air quantity controller includes：Fixing axle 2, the fixing axle 2 are provided with spout framework 1, the spout framework 1
On be hinged with controllable register 3, the bottom of controllable register 3 is provided with jacking apparatus 5, and the jacking apparatus 5 can change regulation gear
Angle of the plate 3 relative to the axis of spout framework 1.
Deflector 4 is provided with the spout framework 1, described one end of deflector 4 is connected with the bottom of spout framework 1, described to lead
The stream other end of plate 4 is connected with controllable register 3, and the jacking apparatus 5 includes：Electricpropulsion installation 53, it is described to be electric-only propulsion dress
Put 53 and be provided with catch bar 52, the catch bar 52 is connected through spout framework 1 with controllable register 3, outside the catch bar 52
Portion is set with sealing guide pin bushing 51, and the sealing guide pin bushing 51 top top holds out against the bottom of spout framework 1, and the material of deflector 4 is not
Become rusty steel, and described one end of deflector 4 is welded with the bottom of spout framework 1, and the other end controllable register 3 of deflector 4 is close to fixing axle 2
One end is overlapped, and the controllable register 3 is 0-30 degree, the controllable register 3 relative to the angular range that the axis of spout framework 1 is rotated
The radius of the height of end jacking not more than spout framework 1.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of adjustable Secondary Air air inlet structure of CFBB, it is characterised in that including：Air quantity controller and pot
Stove, the air quantity controller is connected with boiler, and the air quantity controller includes：Set in spout framework, the spout framework
Have and controllable register is hinged with fixing axle, the fixing axle, the controllable register bottom is provided with jacking apparatus, the jacking apparatus
Angle of the controllable register relative to spout framework axis can be changed.
2. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 1, it is characterised in that：Institute
State and deflector is provided with spout framework, described deflector one end is connected with spout framework bottom, the deflector other end is with adjusting
Section baffle plate is connected.
3. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 2, it is characterised in that：Institute
Stating jacking apparatus includes：Electricpropulsion installation, the electricpropulsion installation is provided with catch bar, and the catch bar passes through spout structure
Frame is connected with controllable register.
4. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 3, it is characterised in that：Institute
Catch bar outer cover is stated equipped with sealing guide pin bushing, the sealing guide pin bushing top top holds out against spout framework bottom.
5. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 4, it is characterised in that：Institute
Deflector material is stated for stainless steel, described deflector one end is welded with spout framework bottom, the deflector other end regulation gear
Plate is overlapped close to fixing axle one end.
6. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 5, it is characterised in that：Institute
It is 0-30 degree that controllable register, which is stated, relative to the angular range that spout framework axis is rotated.
7. the adjustable Secondary Air air inlet structure of a kind of CFBB according to claim 6, it is characterised in that：Institute
State the radius of the height not more than spout framework of controllable register end jacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443302.7U CN206496342U (en) | 2016-12-27 | 2016-12-27 | A kind of adjustable Secondary Air air inlet structure of CFBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443302.7U CN206496342U (en) | 2016-12-27 | 2016-12-27 | A kind of adjustable Secondary Air air inlet structure of CFBB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206496342U true CN206496342U (en) | 2017-09-15 |
Family
ID=59801659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621443302.7U Expired - Fee Related CN206496342U (en) | 2016-12-27 | 2016-12-27 | A kind of adjustable Secondary Air air inlet structure of CFBB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206496342U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983507A (en) * | 2019-12-16 | 2020-04-10 | 沈建华 | Carding and scattering device for home textiles and carding technology applying scattering device |
| CN112096442A (en) * | 2020-11-06 | 2020-12-18 | 王世甲 | Gas dredging equipment for coal mine |
| CN112761737A (en) * | 2021-01-15 | 2021-05-07 | 华电电力科学研究院有限公司 | Air volume control system and control method of steam turbine generator set |
| CN113237082A (en) * | 2021-04-25 | 2021-08-10 | 西安交通大学 | Plug-in L-shaped secondary air baffle |
-
2016
- 2016-12-27 CN CN201621443302.7U patent/CN206496342U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983507A (en) * | 2019-12-16 | 2020-04-10 | 沈建华 | Carding and scattering device for home textiles and carding technology applying scattering device |
| CN112096442A (en) * | 2020-11-06 | 2020-12-18 | 王世甲 | Gas dredging equipment for coal mine |
| CN112761737A (en) * | 2021-01-15 | 2021-05-07 | 华电电力科学研究院有限公司 | Air volume control system and control method of steam turbine generator set |
| CN113237082A (en) * | 2021-04-25 | 2021-08-10 | 西安交通大学 | Plug-in L-shaped secondary air baffle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190701 Address after: 610000 No. 188 Chuanguo Road, Jintang County Industrial Park, Chengdu City, Sichuan Province Patentee after: Sichuan Chuanguo Boiler Co., Ltd. Address before: 610400 No. 188 Chuanguo Road, Zhaozhen, Jintang County, Chengdu City, Sichuan Province (Jintang Industrial Park) Patentee before: Sichuan TEDA, kawanabe Energy Technology Co. Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 Termination date: 20191227 |