CN106185368B - A kind of coal dust feeding device - Google Patents
A kind of coal dust feeding device Download PDFInfo
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- CN106185368B CN106185368B CN201610745272.3A CN201610745272A CN106185368B CN 106185368 B CN106185368 B CN 106185368B CN 201610745272 A CN201610745272 A CN 201610745272A CN 106185368 B CN106185368 B CN 106185368B
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- coal dust
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Abstract
The present invention relates to a kind of coal dust feeding devices, it includes the feed bin (6) being sequentially arranged from top to bottom, rotator type adjusts the speed dispenser (1) and rotary air hose (5), it is connected between feed bin (6) bottom by entrance sleeve (11) at the top of rotator type speed regulation dispenser (1), it is connected between rotator type speed regulation dispenser (1) bottom and rotary air hose (5) by discharge connection (12), the rotary air hose (5) includes first level pipeline section (5.1), second horizontal pipe section (5.2) and connecting bending pipeline section (5.3), described first level pipeline section (5.1) one end is connected with roots blower (4), the other end is internally provided with Venturi (3), discharge connection (12) lower end is connected by material blanking tube (2) with Venturi (3).A kind of coal dust feeding device of the present invention, it may ensure that coal dust neither blocks, and can continuous, stable material-supplying, powder-feeding amount is adjusted according to boiler load trend.
Description
Technical field
The present invention relates to a kind of coal dust feeding devices, especially suitable for efficient pulverized coal industrial.
Background technique
German Industrial pulverized-coal fired boiler, with its safety, the feature of environmental protection (exhaust emissions and generating plant pulverized coal boiler, gas fired-boiler phase
When), advanced (automatic measuring and controlling, teletransmission manipulation, unattended), (98% or more efficiency of combustion, boiler thermal efficiency are reachable for economy
92% or more) it, can be used as clean energy resource, be the substitute of oil and gas.The small and medium-sized industrial coal powder boilers in China use for reference Germany
The technology and theory of industrial coal powder boiler last 10 years, have in the technology such as coal dust tower of key core, feed, combustion system
It is broken through.
Chinese patent literature CN201458346U discloses a kind of pulse-free coal powder supply device, can effectively solve coal dust and exist
There is a phenomenon where accumulation, blocking and conveying compensation in coal chute road.But another question is also brought, due to helical blade
It is not can avoid between duff pipe there are gap, since spiral transferring tube cell lower part is provided with coal dust mixing injector, in pulverized coal flow
It threads a pipe interior formation negative pressure, it is difficult to control charging rate, excessive coal dust pours into burner hearth and forms detonation.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of coal dust feeding device for the above-mentioned prior art, it can be with
Guarantee that coal dust neither blocks, but can continuous, stable material-supplying, powder-feeding amount is adjusted according to boiler load trend.
The present invention solves the above problems used technical solution are as follows: a kind of coal dust feeding device, it includes from top to bottom
Feed bin, rotator type speed regulation dispenser and the rotary air hose being sequentially arranged, the rotator type speed regulation dispenser top and feed bin bottom
It is connected between portion by entrance sleeve, passes through discharge connection between the rotator type speed regulation dispenser bottom and rotary air hose
It is connected, the rotary air hose includes first level pipeline section, the second horizontal pipe section and connecting bending pipeline section, the first level pipe
Section and the second horizontal pipe section are arranged in parallel up and down, and the connecting bending pipeline section is connected to first level pipeline section right end and the second horizontal tube
Between section right end, first level pipeline section left end is provided with roots blower, is provided with venturi in the first level pipeline section
Device, the discharge connection lower end are connected by material blanking tube with Venturi.
The coal dust feeding device further includes spiral conveying pipeline, the spiral conveying pipeline be provided on the upside of one end into
Material mouth is provided with discharge port on the downside of the other end, and the bin bottom is connected with feed inlet, the discharge port and import
Adapter tube is connected.
The rotator type speed regulation dispenser includes circular rotatable component, and the circular rotatable part centre is provided with centre
Axis is disposed with multiple annular storage cavitys, the entrance sleeve and discharge connection on the circular rotatable component from inside to outside
It is connected with multiple annular storage cavitys, is separated into multiple storing lattices by multiple partitions in each annular storage cavity.
The material blanking tube top half is vertical section, and lower half portion is tilting section, the tilting section and level of the material blanking tube
The angle of line is 40 ° ~ 80 °.
It is provided with blowing pipe on the downside of the spiral conveying pipeline, the position of the blowing pipe and the position of feed inlet are corresponding.
It is provided with respirator on the upside of the spiral conveying pipeline, the position of the respirator, which is relative to the position of the discharge port, answers.
Compared with the prior art, the advantages of the present invention are as follows:
1, coal dust blanking it is smooth, it is stable, without blocking, no accumulation；
2, coal dust feed is stablized, is controllable, will not cause due to a large amount of coal dusts of local decompression pour into burner in for powder pipeline
Detonation；
3, powder-feeding amount can be adjusted according to boiler load, and can shifts to an earlier date to be changed according to load variations trend and gives powder trend.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of coal dust feeding device of the present invention.
Fig. 2 is the structural schematic diagram that rotator type adjusts the speed dispenser in Fig. 1.
Fig. 3 is the top view of Fig. 2.
Wherein:
Rotator type adjusts the speed dispenser 1
Material blanking tube 2
Venturi 3
Roots blower 4
Rotary air hose 5
First level pipeline section 5.1
Second horizontal pipe section 5.2
Connecting bending pipeline section 5.3
Feed bin 6
Spiral conveying pipeline 7
Blowing pipe 8
Respirator 9
Partition 10
Entrance sleeve 11
Discharge connection 12
Central axis 13
Storing lattice 14
Circular rotatable component 15
Annular storage cavity 16.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Fig. 1 ~ Fig. 3, one of the present embodiment coal dust feeding device, it includes the material being sequentially arranged from top to bottom
Storehouse 6, rotator type speed regulation dispenser 1 and rotary air hose 5 lead between 1 top of rotator type speed regulation dispenser and 6 bottom of feed bin
It crosses entrance sleeve 11 to be connected, passes through 12 phase of discharge connection between rotator type speed regulation 1 bottom of dispenser and rotary air hose 5
Connection, the rotary air hose 5 include first level pipeline section 5.1, the second horizontal pipe section 5.2 and connecting bending pipeline section 5.3, and described the
One horizontal pipe section 5.1 and the second about 5.2 horizontal pipe section parallel arrangement, the connecting bending pipeline section 5.3 are connected to first level pipe
Between 5.1 right ends of section and 5.2 right end of the second horizontal pipe section, 5.1 left end of first level pipeline section is provided with roots blower 4, institute
It states and is provided with Venturi 3 in first level pipeline section 5.1,12 lower end of discharge connection is filled by material blanking tube 2 and venturi
It sets 3 to be connected, the wind that roots blower comes out forms high-speed jet through Venturi, is formed after carrying the coal dust that material blanking tube falls
Wind powder mixture, into rotary air hose, the wind powder air-flow in rotary air hose after 180 ° turn to reduction of speed, flow passes through
Conveyance conduit enters boiler-burner；
The rotator type speed regulation dispenser 1 includes circular rotatable component 15, and the circular rotatable component 15 is provided centrally with
Jackshaft 13 is disposed with multiple annular storage cavitys 16, the entrance sleeve on the circular rotatable component 15 from inside to outside
11 and discharge connection 12 be connected with multiple annular storage cavitys 16, divided by multiple partitions 10 in each annular storage cavity 16
Multiple storing lattices 14 are divided into, coal dust is entered the storing lattice of multiple annular storage cavitys on circular rotatable component by entrance sleeve
Interior, coal dust is sent to the discharge connection of another location by circular rotatable component, and coal dust is since self weight is fallen, into material blanking tube；
2 top half of material blanking tube is vertical section, and lower half portion is tilting section, the tilting section and water of the material blanking tube 2
The angle of horizontal line is 40 ° ~ 80 °, which is greater than the angle of repose of coal dust；
The coal dust of 2 lower port of material blanking tube is since self weight is fallen, while the Venturi 3 of its underpart generates ejector action,
Negative pressure is generated in ash dropping hopper accelerates coal dust to flow downward, and coal dust forms wind powder mixture warp after mixing with the wind that roots blower conveys
It crosses and enters boiler after Venturi 3 after the stream of rotary air hose 5, deceleration；Rotary air hose 5 is 180 ° of bend pipes, it
Wind powder mixture after Venturi 3 can be buffered prevents wind powder mixture from entering boiler with excessively high speed；
The coal dust feeding device further includes spiral conveying pipeline 7, and the spiral conveying pipeline 7 is provided on the upside of one end
Feed inlet is provided with discharge port on the downside of the other end, and 6 bottom of feed bin is connected with feed inlet, the discharge port and
Entrance sleeve 11 is connected；
Blowing pipe 8 is provided on the downside of the spiral conveying pipeline 7, the position of the blowing pipe 8 is opposite with the position of feed inlet
It answers, can guarantee that discharging is not agglomerated, not block；
Respirator 9 is provided on the upside of the spiral conveying pipeline 7, the position of the respirator 9 is relative to the position of the discharge port
It answers, pressure and external atmosphere pressure in spiral conveying pipeline can be made to keep almost the same, to realize stable material-supplying；
Rotator type adjusts the speed 13 receiving electrode of central axis of dispenser 1, and chain boiler combustion signal controls circular rotatable component 15
Rotational angular velocity adjust powder-feeding amount；The central axis rotation of fltting speed and rotator type the speed regulation dispenser 1 of spiral conveying pipeline 7
Angular speed intercouples, and reaches the adaptable revolving speed of the two.
The Load Regulation of pulverized-coal fired boiler has the characteristics that hysteresis quality because coal dust conveys and burn factor, if can be according to load
Variation tendency adjust the supply amount of coal dust in advance, the quick response of boiler load can be realized.Preferably, the rotator type tune
Fast dispenser 1 can calculate suitable numerical value according to boiler load variation tendency, PLC or host computer, change round turn in advance
The 6 powder falling amount of fltting speed or feed bin of the angular speed of dynamic component 15 and matching spiral conveying pipeline 7, is adjusted in advance to reach
The purpose of coal saving powder supply amount makes quick response load variations of burning.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (1)
1. a kind of coal dust feeding device, it is characterised in that: it includes the feed bin (6) being sequentially arranged from top to bottom, rotator type speed regulation
Dispenser (1) and rotary air hose (5) pass through import between rotator type speed regulation dispenser (1) top and feed bin (6) bottom
Adapter tube (11) is connected, and passes through discharge connection (12) between rotator type speed regulation dispenser (1) bottom and rotary air hose (5)
It is connected, the rotary air hose (5) includes first level pipeline section (5.1), the second horizontal pipe section (5.2) and connecting bending pipeline section
(5.3), the first level pipeline section (5.1) and the second horizontal pipe section (5.2) are arranged in parallel up and down, the connecting bending pipeline section
(5.3) it is connected between first level pipeline section (5.1) right end and the second horizontal pipe section (5.2) right end, the first level pipeline section
(5.1) left end is provided with roots blower (4), is provided with Venturi (3) in the first level pipeline section (5.1), it is described go out
Mouth adapter tube (12) lower end is connected by material blanking tube (2) with Venturi (3)；
The coal dust feeding device further includes spiral conveying pipeline (7), and the spiral conveying pipeline (7) is provided on the upside of one end
Feed inlet is provided with discharge port on the downside of the other end, and feed bin (6) bottom is connected with feed inlet, the discharge port
It is connected with entrance sleeve (11)；
Rotator type speed regulation dispenser (1) includes circular rotatable component (15), circular rotatable component (15) the center setting
Have jackshaft (13), is disposed with multiple annular storage cavitys (16) on the circular rotatable component (15) from inside to outside, it is described
Entrance sleeve (11) and discharge connection (12) are connected with multiple annular storage cavitys (16), in each annular storage cavity (16)
Multiple storing lattices (14) are separated by multiple partitions (10)；
Material blanking tube (2) top half is vertical section, and lower half portion is tilting section, the tilting section and water of the material blanking tube (2)
The angle of horizontal line is 40 ° ~ 80 °；
It is provided with blowing pipe (8) on the downside of the spiral conveying pipeline (7), the position of the blowing pipe (8) and the position phase of feed inlet
It is corresponding；
It is provided with respirator (9) on the upside of the spiral conveying pipeline (7), the position of the respirator (9) and the position phase of discharge port
It is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745272.3A CN106185368B (en) | 2016-08-29 | 2016-08-29 | A kind of coal dust feeding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745272.3A CN106185368B (en) | 2016-08-29 | 2016-08-29 | A kind of coal dust feeding device |
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| CN106185368A CN106185368A (en) | 2016-12-07 |
| CN106185368B true CN106185368B (en) | 2018-12-25 |
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| CN111750374A (en) * | 2020-07-21 | 2020-10-09 | 西安西热锅炉环保工程有限公司 | Improved split type compact pulverized coal distributor |
| CN112524391B (en) * | 2020-12-30 | 2022-03-11 | 临沂中联水泥有限公司 | Pulverized coal conveying method with electricity-saving, noise-reducing, low-nitrogen and anti-accumulation functions |
| CN113790462B (en) * | 2021-09-08 | 2024-06-18 | 北京天地融创科技股份有限公司 | Biomass powder fuel storage and supply device |
| CN114963223A (en) * | 2022-05-19 | 2022-08-30 | 西安热工研究院有限公司 | Anti-blocking and deep-crushing biomass particle storage feeding system |
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|---|---|---|---|---|
| CN1142034A (en) * | 1995-08-02 | 1997-02-05 | 李春甫 | Boiler coal-ash combustor |
| CN101265510A (en) * | 2008-05-05 | 2008-09-17 | 武汉桂坤科技有限公司 | Fusion reduction reaction furnace and fusion smelting method for metal |
| CN201458346U (en) * | 2009-06-10 | 2010-05-12 | 煤炭科学研究总院 | Pulseless coal powder feeding device |
| CN102155842A (en) * | 2011-02-22 | 2011-08-17 | 黑龙江省电力科学研究院 | System for increasing pulverizing and drying output force during doped lignitous coal burning of burning bituminous coal boiler |
| WO2014204198A1 (en) * | 2013-06-19 | 2014-12-24 | Lee Chun-Woo | Combustion device for flammable powder |
| CN205973068U (en) * | 2016-08-29 | 2017-02-22 | 江苏双良锅炉有限公司 | Buggy feedway |
-
2016
- 2016-08-29 CN CN201610745272.3A patent/CN106185368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1142034A (en) * | 1995-08-02 | 1997-02-05 | 李春甫 | Boiler coal-ash combustor |
| CN101265510A (en) * | 2008-05-05 | 2008-09-17 | 武汉桂坤科技有限公司 | Fusion reduction reaction furnace and fusion smelting method for metal |
| CN201458346U (en) * | 2009-06-10 | 2010-05-12 | 煤炭科学研究总院 | Pulseless coal powder feeding device |
| CN102155842A (en) * | 2011-02-22 | 2011-08-17 | 黑龙江省电力科学研究院 | System for increasing pulverizing and drying output force during doped lignitous coal burning of burning bituminous coal boiler |
| WO2014204198A1 (en) * | 2013-06-19 | 2014-12-24 | Lee Chun-Woo | Combustion device for flammable powder |
| CN205973068U (en) * | 2016-08-29 | 2017-02-22 | 江苏双良锅炉有限公司 | Buggy feedway |
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| CN106185368A (en) | 2016-12-07 |
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