CN106583018B - Medium-speed pulverizer primary wind and powder selectivity distributor - Google Patents
Medium-speed pulverizer primary wind and powder selectivity distributor Download PDFInfo
- Publication number
- CN106583018B CN106583018B CN201611166255.0A CN201611166255A CN106583018B CN 106583018 B CN106583018 B CN 106583018B CN 201611166255 A CN201611166255 A CN 201611166255A CN 106583018 B CN106583018 B CN 106583018B
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- baffle
- primary air
- air piping
- medium
- speed pulverizer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Equipment the present invention relates to being supplied to combustion apparatus or distributing pulverized fuel, more particularly to divide equally effect good for a kind of coal dust, it occupies little space, by the small medium-speed pulverizer primary wind and powder selectivity distributor of resistance, on the primary air piping of medium-speed pulverizer outlet, including several adjustable damper mechanisms being evenly arranged along primary air piping entrance excircle, each adjustable damper mechanism includes being fixed on the baffle installation base and baffle of the outlet periphery of primary air piping, the baffle is rotatably mounted in baffle installation base, plane where each baffle is perpendicular with the radial direction of primary air piping, all baffle synchronous rotaries are with uniform water conservancy diversion.
Description
Technical field
The present invention relates to equipment more particularly to a kind of medium-speed pulverizer First airs to combustion apparatus supply and pulverized fuel
Powder selectivity distributor.
Background technique
Medium-speed pulverizer is a kind of thermal power plant's commonly coal pulverizer, its working principle is that coal falls into mill, coal from coal spout
It will be thrown at mill bowl after falling into mill by centrifugal force and complete to mill and drying at vane, and then be blown to whizzer
Complete separation in place.
Referring to Fig. 3, since medium-speed pulverizer uses centrifugal separation, so there are residual rotations, although adding venturi
Equipartition device, but residual rotation still influences coal dust and evenly distributes, four First airs for connecting the coal spout 4 of medium-speed pulverizer
Coal powder density in pipe 1 is uneven and relatively large deviation is presented.This deviation directly affects temperature field in boiler, combustion atmosphere, coal
Powder burn-out degree etc. is more likely to cause boiler scaling, heating surface by high temperature corrosion, the final safety and economy fortune for influencing boiler
Row.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of coal dust divide equally effect is good, occupy little space, by
The small medium-speed pulverizer primary wind and powder selectivity distributor of resistance.
A kind of medium-speed pulverizer primary wind and powder selectivity distributor of the invention, set on the primary air piping of medium-speed pulverizer
On, including several adjustable damper mechanisms being evenly arranged along primary air piping entrance excircle, each adjustable damper mechanism includes solid
The baffle installation base and baffle, the baffle for being scheduled on the outlet periphery of primary air piping are rotatably mounted in baffle installation base,
Plane where each baffle is perpendicular with the radial direction of primary air piping, and all baffle synchronous rotaries are with uniform water conservancy diversion.
Further, the baffle rotation angle is 360 degree.
Further, primary air piping entrance periphery has been evenly arranged 12 baffle mechanisms.
Further, the baffle installation base includes the inclined plate, pedestal and helical axis for being fixed on primary air piping avris, described
Pedestal runs through and is fixed on inclined plate, and the bottom of the baffle is screwed in pedestal center by helical axis, is arranged on the pedestal
There is the latch fitting being adapted to helical axis.
According to the above aspect of the present invention, the present invention has at least the following advantages: present invention is mainly used for medium-speed pulverizer primary air pipings
Coal dust divide equally, on the entrance periphery of primary air piping, the baffle of achievable 360 degree rotation is evenly arranged, because of wind powder stream pair
Exporting cylinder has tangential-velocity component and axial velocity, determines wind powder stream absolute velocity and one by calculating or numerical simulation result
The angle in secondary wind tube outlet plane normal direction, and with this as approximate baffle rotation angle, uniform water conservancy diversion, so that four First airs
Coal powder density at pipe is uniform, can optimize combustion atmosphere in furnace, coal dust burn-out degree；Structure of the invention is simple, occupied space
It is small, at low cost, more importantly the medium-speed pulverizer primary air piping selectivity pulverized coal distributor accounts in actual use
It is small, small by resistance with space.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of medium-speed pulverizer primary wind and powder selectivity distributor；
Fig. 2 is the cross section structure schematic diagram of medium-speed pulverizer primary wind and powder selectivity distributor；
Fig. 3 is the coal spout of existing medium-speed pulverizer and the relative position schematic diagram of four primary air pipings.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1-2, the medium-speed pulverizer primary wind and powder selectivity distributor of a preferred embodiment of the present invention is set to middling speed
On the primary air piping 1 of coal pulverizer, including 12 adjustable damper mechanisms being evenly arranged along 1 entrance excircle of primary air piping, each
Adjustable damper mechanism includes being fixed on the baffle installation base and baffle 3 of the outlet periphery of primary air piping 1, the rotatable peace of baffle 3
In baffle installation base, each 3 place plane of baffle is perpendicular with the radial direction of primary air piping 1, the synchronous rotation of all baffles 3
Turn with uniform water conservancy diversion；Preferably, baffle installation base includes the inclined plate for being fixed on 1 avris of primary air piping, pedestal 2 and helical axis 4, in
The connection inclined plate of speed coal mill tank outlet and primary air piping 1 can be used directly as above-mentioned inclined plate, and pedestal 2 runs through and is fixed on
On inclined plate, the bottom of baffle 3 is screwed in 2 center of pedestal to realize the rotation of baffle 3, move up and down, on pedestal 2 by helical axis 4
It is provided with the latch fitting being adapted to helical axis 4, in practical water conservancy diversion, is mainly screwed on connected in 2 center of pedestal by helical axis 4 and passes through
Spiral is carried out the rotation angle of controllable register 3 and is moved up and down；Rounded constrictions are formed in the top of primary air piping 1 at the top of 12 baffles
Mouth structure drives baffle 3 to move up and down by 4 spiral of helical axis to adjust the bore of rounded constrictions mouth structure, and with gear
Plane where 3 central axes of plate and 1 central axes of primary air piping is benchmark face, and 4 spiral of micro-adjustment helical axis drives baffle 3 to go to its institute
It is that 0-50 degree is advisable in the angle of plane and datum level；After reaching specified angle and position, by latch fitting locked flapper with uniform
Water conservancy diversion.
A kind of use of medium-speed pulverizer primary wind and powder selectivity distributor of the invention, can again auxiliary inlet louver with itself
Axis turns an angle the powder amount for inhibiting coal dust to enter corresponding primary air piping 1, even if blade is adjusted without rotation, due to it
Racemization of the body to air-flow, can also improve the uniformity of coal powder distribation.
The above is only the preferred embodiment of the present invention, are not intended to restrict the invention, it is noted that this technology is led
For the those of ordinary skill in domain, without departing from the technical principles of the invention, several improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of medium-speed pulverizer primary wind and powder selectivity distributor, on the primary air piping of medium-speed pulverizer, feature exists
In: including 12 adjustable damper mechanisms being evenly arranged along primary air piping entrance excircle, each adjustable damper mechanism includes solid
The baffle installation base and baffle, the baffle for being scheduled on the outlet periphery of primary air piping are rotatably mounted in baffle installation base,
Plane where each baffle is consistent with the normal direction of primary air piping contact point, and all baffle synchronous rotaries are uniformly to lead
Stream；
The baffle rotation angle is 360 degree；
The baffle installation base includes the inclined plate, pedestal and helical axis for being fixed on primary air piping avris, and the pedestal runs through and consolidates
It is scheduled on inclined plate, the bottom of the baffle is screwed in pedestal center by helical axis, is provided on the pedestal suitable with helical axis
The latch fitting matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166255.0A CN106583018B (en) | 2016-12-16 | 2016-12-16 | Medium-speed pulverizer primary wind and powder selectivity distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166255.0A CN106583018B (en) | 2016-12-16 | 2016-12-16 | Medium-speed pulverizer primary wind and powder selectivity distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106583018A CN106583018A (en) | 2017-04-26 |
| CN106583018B true CN106583018B (en) | 2019-04-16 |
Family
ID=58801971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611166255.0A Active CN106583018B (en) | 2016-12-16 | 2016-12-16 | Medium-speed pulverizer primary wind and powder selectivity distributor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106583018B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470009B (en) * | 2017-09-11 | 2023-03-28 | 西安西热锅炉环保工程有限公司 | Device and method for deeply separating and equally dividing variable-frequency rotating pulverized coal of medium-speed coal mill |
| CN110394231A (en) * | 2019-07-19 | 2019-11-01 | 国家能源集团宁夏煤业有限责任公司 | Coal pulverizer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001045849A1 (en) * | 1999-12-21 | 2001-06-28 | Loesche Gmbh | Mill classifier |
| CN201357109Y (en) * | 2009-02-25 | 2009-12-09 | 山东鲁能节能设备开发有限公司 | Coal mill separator baffle asynchronous adjusting device |
| CN201534847U (en) * | 2009-11-06 | 2010-07-28 | 江苏大峘集团有限公司 | Coal powder injection system for blast furnace |
| CN201603688U (en) * | 2009-11-09 | 2010-10-13 | 孙家鼎 | Self-rotation type pulverized coal separation distributor |
| CN202419684U (en) * | 2012-02-03 | 2012-09-05 | 山东中实易通集团有限公司 | Concentration regulating mechanism for separator |
| CN104006402A (en) * | 2014-05-07 | 2014-08-27 | 含山县大力精密机械有限公司 | Pulverized coal distributor |
| CN104017926A (en) * | 2014-06-26 | 2014-09-03 | 济钢集团有限公司 | Uniform distributor for blast furnace coal powder blowing |
| CN206763103U (en) * | 2016-12-16 | 2017-12-19 | 大唐东北电力试验研究所有限公司 | Medium-speed pulverizer primary wind and powder selectivity distributor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277540A (en) * | 1993-03-24 | 1994-10-04 | Ishikawajima Harima Heavy Ind Co Ltd | Vertical mill |
-
2016
- 2016-12-16 CN CN201611166255.0A patent/CN106583018B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001045849A1 (en) * | 1999-12-21 | 2001-06-28 | Loesche Gmbh | Mill classifier |
| CN201357109Y (en) * | 2009-02-25 | 2009-12-09 | 山东鲁能节能设备开发有限公司 | Coal mill separator baffle asynchronous adjusting device |
| CN201534847U (en) * | 2009-11-06 | 2010-07-28 | 江苏大峘集团有限公司 | Coal powder injection system for blast furnace |
| CN201603688U (en) * | 2009-11-09 | 2010-10-13 | 孙家鼎 | Self-rotation type pulverized coal separation distributor |
| CN202419684U (en) * | 2012-02-03 | 2012-09-05 | 山东中实易通集团有限公司 | Concentration regulating mechanism for separator |
| CN104006402A (en) * | 2014-05-07 | 2014-08-27 | 含山县大力精密机械有限公司 | Pulverized coal distributor |
| CN104017926A (en) * | 2014-06-26 | 2014-09-03 | 济钢集团有限公司 | Uniform distributor for blast furnace coal powder blowing |
| CN206763103U (en) * | 2016-12-16 | 2017-12-19 | 大唐东北电力试验研究所有限公司 | Medium-speed pulverizer primary wind and powder selectivity distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106583018A (en) | 2017-04-26 |
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Address after: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Applicant after: Datang northeast electric power test and Research Institute Co., Ltd. Address before: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Applicant before: DATANG NORTHEAST ELECTRIC POWER TEST RESEARCH INSTITUTE CO., LTD. |
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