CN105114972B - A kind of uniform conveyance conduit of coal dust and divider - Google Patents
A kind of uniform conveyance conduit of coal dust and divider Download PDFInfo
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- CN105114972B CN105114972B CN201510511929.5A CN201510511929A CN105114972B CN 105114972 B CN105114972 B CN 105114972B CN 201510511929 A CN201510511929 A CN 201510511929A CN 105114972 B CN105114972 B CN 105114972B
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- pulverized coal
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Abstract
The invention discloses a kind of uniform conveyance conduit of coal dust and divider, including main pulverized coal feed pipe, divider, branch pipe(tube) distributor and multiple branch pulverized coal feed pipes, the end of main pulverized coal feed pipe connects the top of divider by sealing flange, the top of the end seal connecting branch road distributor of divider, the multiple branch pulverized coal feed pipes of end connection of branch pipe(tube) distributor；Using the outer tube and air admission hole of main pulverized coal feed pipe, blown in outer tube, simultaneously, because interior screen casing surrounding is evenly distributed with stomata, hole diameter is less than pulverized coal particle diameter, so gas can also enter interior screen casing, the coal dust of internal screen casing is blown, the injection again of wind powder, reaches uniform purpose；Finally by the bifurcated pipe of branch pipe(tube) distributor, by it is interior be in charge of be divided into multigroup, be in charge of in every group by piece special-shaped transition conduit of bifurcated pipe correspondence, with the active force of air blast, wind powder is further continued for flow forward, and branch pulverized coal feed pipe is entered by connecting tube, and bifurcated is completed.
Description
Technical field
The present invention relates to coal dust conveying technology field, more particularly to a kind of uniform conveyance conduit of coal dust and divider.
Background technology
Power transportation pipe（Alternatively referred to as pulverized coal feed pipe, pulverized coal channel）It is widely used in chemical industry, metallurgy, power industry
In production, mainly with pneumatic conveying mode various mealy solid particles are carried out with the transport of long-time, big distance.Due to pipeline cloth
The limitation for being highly susceptible to ambient conditions is put, inevitably needs to install elbow additional in pipeline turning and rising, the place for declining,
So as to cause distribution of the powdered granule in pipeline very uneven, when needing to carry out pipeline bifurcated treatment, it is difficult to ensure that point
The distributing uniformity of the powdered granule after fork between each branch pipe(tube).
In pulverized coal power boiler, the qualified coal dust that pulverized coal preparation system is mainly used in grinding coal pulverizer is uniformly delivered to respectively
In individual burner nozzle, it is set uniformly to be sprayed into burner hearth by spout, this requires that each First air coal dust of pulverized coal preparation system is defeated
Sending pipeline enclosure has good coal dust and allocation of the amount of air uniformity.With the increase of boiler controller system capacity, pulverized coal preparation system coal dust gas
The maldistribution of stream directly affects the security and stability of boiler operatiopn.The distribution of pulverized coal preparation system breeze airflow whether be uniformly
One of good and bad key factor of Combustion Operation of Boilers is determined, the primary air velocity and coal powder density of each burner of reasonable disposition are to protect
The essential condition of safe operation of the boiler is demonstrate,proved, is also the precondition that low NOx combustion technologies are smoothly implemented.
At present, from coal pulverizer wind powder mixture out by pulverized coal channel multiple elbows and Pipeline lift process, coal
Coal dust distribution in powder pipeline is very uneven, shows the phenomenon that coal dust concentrates on pulverized coal channel side, causes in pulverized coal channel
Local coal powder density is too high.Referring to Fig. 1, in the prior art directly by main pulverized coal feed pipe 01 by bifurcated pipe 02 and branch duff pipe
Road 03 is connected.The method of salary distribution of this simple use bifurcated pipe 02 so that the coal dust of area with high mercury enters the defeated powder of a certain branch
Pipeline 03, the coal dust of low concentration region enters another pulverized coal feed pipe 03, causes coal powder distribation uneven.
The content of the invention
It is an object of the invention to provide a kind of uniform conveyance conduit of coal dust and divider, can effectively by coal dust equably
It is assigned in multiple branch's coal chutes, it is ensured that the uniformity of coal dust, improves work quality.
The technical solution adopted by the present invention is：
A kind of uniform conveyance conduit of coal dust and divider, including main pulverized coal feed pipe, divider, branch pipe(tube) distributor and multiple
Branch pulverized coal feed pipe, the end of main pulverized coal feed pipe connects the top of divider, the end seal connection of divider by sealing flange
The top of branch pipe(tube) distributor, the multiple branch pulverized coal feed pipes of end connection of branch pipe(tube) distributor；Described main pulverized coal feed pipe includes
Outer tube and interior screen casing, the surrounding of outer tube are distributed with air admission hole, and interior screen casing surrounding is evenly distributed with stomata, and hole diameter is less than
Pulverized coal particle diameter；Described divider includes outer tube body, fixes one piece of organic glass of antistatic at the two-port of outer tube body respectively
Glass plate, is uniformly provided with the through hole phase on multiple through holes, and two pieces of antistatic poly (methyl methacrylate) plates on every piece of antistatic poly (methyl methacrylate) plate
Symmetrically, connected by dividing equally the seal of tube in one between the symmetrical through hole of each pair；Described branch pipe(tube) distributor include bifurcated pipe,
Special-shaped transition conduit and connecting tube, the top of bifurcated pipe are connected in the end of divider, bifurcated pipe and are radially provided with least one piece
Flow distribution plate, all flow distribution plates divide equally bifurcated tube section, every adjacent two halves flow distribution plate branch pipe together with bifurcated tube wall composition, often
Road branch pipe connects a top for connecting tube by a special-shaped transition conduit, and the end of connecting tube connects the beginning of branch pulverized coal feed pipe
End.
Described air admission hole is connected with appendix.
The present invention is blown, simultaneously as interior screen casing four using the outer tube and air admission hole of main pulverized coal feed pipe in outer tube
Stomata is evenly distributed with week, hole diameter is less than pulverized coal particle diameter, so gas can also enter interior screen casing, the coal of internal screen casing
Powder is blown, the injection again of wind powder, reaches uniform purpose；When wind powder is after being blowed uniform before bifurcated, along air blast
Air-flow enter in divider, recycle the uniform pulverized coal conveying of divider, finally by the bifurcated pipe of branch pipe(tube) distributor, will
Inside it is in charge of and is divided into multigroup, is in charge of in every group by piece special-shaped transition conduit of bifurcated pipe correspondence；Now, equivalent to having incited somebody to action
Wind powder bifurcated, but also it is introduced into branch pulverized coal feed pipe；With the active force of air blast, wind powder is further continued for flow forward, by connection
Pipe enters branch pulverized coal feed pipe, and bifurcated is completed.
Brief description of the drawings
Fig. 1 is the prior art construction schematic diagram in background of invention；
Fig. 2 is structural representation of the invention；
Fig. 3 is antistatic lucite plate structure schematic diagram of the invention；
Fig. 4 is bifurcated pipe schematic cross-section of the invention.
Specific embodiment
As shown in Figure 1,2 and 3, the present invention includes that main pulverized coal feed pipe 1, divider 2, branch pipe(tube) distributor 3 and multiple branch are defeated
Powder pipeline 4, the end of main pulverized coal feed pipe 1 connects the top of divider 2, the end seal connection of divider 2 by sealing flange 5
The top of branch pipe(tube) distributor 3, the multiple branch pulverized coal feed pipes 4 of end connection of branch pipe(tube) distributor 3；Described main pulverized coal feed pipe 1
Including outer tube 6 and interior screen casing 7, the surrounding of outer tube 6 is distributed with air admission hole, and air admission hole is connected with appendix, appendix connection
There is gas transmission equipmen, for being blown in outer tube 6, simultaneously as the surrounding of interior screen casing 7 is evenly distributed with stomata, hole diameter is small
In pulverized coal particle diameter, so gas can also enter interior screen casing 7, the coal dust of internal screen casing 7 is blown.So operation, can be with
Coal dust is blown into unrest so that coal dust distribution is more uniform.Described divider 2 includes outer tube body 8, and the two-port of outer tube body 8 is punished
One piece of antistatic poly (methyl methacrylate) plate 9 is not fixed, and multiple through holes 10, and two pieces are uniformly provided with every piece of antistatic poly (methyl methacrylate) plate 9
Through hole 10 on antistatic poly (methyl methacrylate) plate 9 is symmetrical, by being in charge of 11 sealings in one between the symmetrical through hole 10 of each pair
Connection；Described branch pipe(tube) distributor 3 includes bifurcated pipe 12, special-shaped transition conduit 13 and connecting tube 14, and the top of bifurcated pipe 12 connects
It is connected to the end of divider 2, is radially provided with least one piece flow distribution plate 15 in bifurcated pipe 12, all flow distribution plates 15 is by bifurcated pipe 12
Section is divided equally, and every adjacent two halves flow distribution plate 15 branch pipe 16 together with the wall of bifurcated pipe 12 composition, per pass branch pipe 16 is different by one
Shape transition conduit 13 connects a top for connecting tube 14, and the end of connecting tube 14 connects the top of branch pulverized coal feed pipe 4.
The embodiment that the invention will now be described in detail with reference to the accompanying drawings：
As shown in Fig. 2 main pulverized coal feed pipe 1 of the invention can be using full section permeability type or using permeability type is segmented, entirely
The resource that section permeability type expends is more, in the specific implementation, can be using segmentation permeability type, it is ensured that section of master before bifurcated
Pulverized coal feed pipe 1 can enter the injection again of sector-style powder, reach uniform purpose.Be there are between outer tube 6 and interior screen casing 7
Gap, facilitates the flowing of gas.Because the granular size of coal dust is uneven, in the course of conveying of long range, the wind-force being subject to is not
Together, there is differentiating phenomenon with short grained coal dust in this coal dust for resulting in bulky grain.When coal dust runs into bifurcated, if directly entered
Row bifurcated, now wind coal is uneven, is directly affected during bifurcated, causes bifurcated uneven.So, the present invention is in bifurcated
Before, by the way of segmentation is blown again.
When wind powder is after being blowed uniform before bifurcated, the air-flow along air blast enters in divider 2, divider of the invention
One piece of antistatic poly (methyl methacrylate) plate 9 is fixed in 2 top and end respectively, and the one side of antistatic poly (methyl methacrylate) plate 9 is to prevent coal dust
Absorption, be on the other hand play a part of shunt and support.When wind powder is reached herein, under the wind-force effect of air blast, need
To continue flowing forward, but shunting is needed herein, in order to ensure the uniform of shunting, it is therefore desirable to pass through divider 2.
It is to be in charge of 11 in many to divide inside device 2, before wind powder reaches divider 2, has been blowed uniformly, now, it is only necessary to ensure
Wind powder smoothly enters divider 2.In the presence of air blast, wind powder is blown into many in divider 2 to be in charge of in 11,
Now, it is in charge of in 11 in every and all contains the larger coal dust of particle and the less coal dust of particle.In the end of divider 2, connect
What is connect is the bifurcated pipe 12 of branch pipe(tube) distributor 3.Because being radially provided with least one piece flow distribution plate 15, this implementation in bifurcated pipe 12
Example two pieces of flow distribution plates 15 of selection, as shown in figure 4, be four passages by 12 points of bifurcated pipe, certainly, it is necessary to be gone according to actual situation
Selection needs the quantity of shunting.Meanwhile, two pieces of flow distribution plates 15 divide equally the section of bifurcated pipe 12, per adjacent two halves flow distribution plate 15 with
The wall of bifurcated pipe 12 constitutes the sector structure that one branch pipe 16, i.e. each branch pipe 16 are for 90 degree.Because the top of flow distribution plate 15 is direct
Contacted with antistatic poly (methyl methacrylate) plate 9, similarly, will antistatic poly (methyl methacrylate) plate 9 be divided into four pieces, antistatic poly (methyl methacrylate) plate
Through hole 10 on 9 is corresponding interior to be in charge of 11 and is divided into four groups, every group that to be in charge of 11 different by the correspondence of bifurcated pipe 12 one
Shape transition conduit 13.Now, equivalent to by wind powder bifurcated, but also it is introduced into branch pulverized coal feed pipe 4.With drum wind action
Power, wind powder is further continued for flow forward, and branch pulverized coal feed pipe 4 is entered by connecting tube 14, and bifurcated is completed.
Claims (2)
1. a kind of coal dust uniform, it is characterised in that：Including main pulverized coal feed pipe, divider, branch pipe(tube) distributor and many
Individual branch pulverized coal feed pipe, the end of main pulverized coal feed pipe connects the top of divider by sealing flange, and the end seal of divider connects
Connect the top of branch pipe(tube) distributor, the multiple branch pulverized coal feed pipes of end connection of branch pipe(tube) distributor；Described main pulverized coal feed pipe bag
Outer tube and interior screen casing are included, the surrounding of outer tube is distributed with air admission hole, and interior screen casing surrounding is evenly distributed with stomata, and hole diameter is small
In pulverized coal particle diameter；Described divider includes outer tube body, fixes one block of antistatic at the two-port of outer tube body respectively organic
Glass plate, is uniformly provided with the through hole on multiple through holes, and two pieces of antistatic poly (methyl methacrylate) plates on every piece of antistatic poly (methyl methacrylate) plate
It is symmetrical, connected by dividing equally the seal of tube in one between the symmetrical through hole of each pair；Described branch pipe(tube) distributor includes bifurcated
Pipe, special-shaped transition conduit and connecting tube, the top of bifurcated pipe is connected in the end of divider, bifurcated pipe and is radially provided with least one
Block flow distribution plate, all flow distribution plates divide equally bifurcated tube section, every adjacent two halves flow distribution plate branch pipe together with bifurcated tube wall composition,
Per pass branch pipe connects a top for connecting tube by a special-shaped transition conduit, and the end of connecting tube connects the beginning of branch pulverized coal feed pipe
End.
2. coal dust uniform according to claim 1, it is characterised in that：Described air admission hole is connected with gas transmission
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511929.5A CN105114972B (en) | 2015-08-20 | 2015-08-20 | A kind of uniform conveyance conduit of coal dust and divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511929.5A CN105114972B (en) | 2015-08-20 | 2015-08-20 | A kind of uniform conveyance conduit of coal dust and divider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105114972A CN105114972A (en) | 2015-12-02 |
| CN105114972B true CN105114972B (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510511929.5A Active CN105114972B (en) | 2015-08-20 | 2015-08-20 | A kind of uniform conveyance conduit of coal dust and divider |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758680B (en) * | 2018-06-01 | 2019-10-15 | 中国神华能源股份有限公司 | Coal even separator and coal pulverizer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000078Y (en) * | 2006-12-01 | 2008-01-02 | 广东韶钢松山股份有限公司 | Gas/solid liquid equipartition device |
| JP4814137B2 (en) * | 2007-03-26 | 2011-11-16 | 三菱重工業株式会社 | Pulverized coal concentration adjustment device |
| CN201364031Y (en) * | 2009-03-13 | 2009-12-16 | 南京三埃工控股份有限公司 | High-uniformity powder coal distributor |
| CN201531896U (en) * | 2009-06-09 | 2010-07-21 | 武汉华尔顺冶金工程技术有限公司 | Solid powder stable burning and uniform distributing device |
| CN203744284U (en) * | 2013-07-04 | 2014-07-30 | 北京华清优燃科技有限公司 | Alternate diversion type pulverized coal distributor |
| CN203823791U (en) * | 2014-03-28 | 2014-09-10 | 烟台龙源电力技术股份有限公司 | Pulverized coal equipartition device, pulverized coal conveying pipeline and equipartition device |
| CN205037339U (en) * | 2015-08-20 | 2016-02-17 | 河南省中利工矿设备制造有限公司 | Buggy uniform delivery device |
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| CN105114972A (en) | 2015-12-02 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pulverized coal uniform conveying pipeline and equalizer Effective date of registration: 20170828 Granted publication date: 20170606 Pledgee: Henan Futan Liquor Industry Co., Ltd. Pledgor: HENAN ZHONGLI MINING EQUIPMENT MANUFACTURING CO., LTD. Registration number: 2017410000019 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190806 Granted publication date: 20170606 Pledgee: Henan Futan Liquor Industry Co., Ltd. Pledgor: HENAN ZHONGLI MINING EQUIPMENT MANUFACTURING CO., LTD. Registration number: 2017410000019 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of uniform conveying pipe and distributor for pulverized coal Effective date of registration: 20201123 Granted publication date: 20170606 Pledgee: PUYANG XIANGYANG GARMENT Co.,Ltd. Pledgor: HENAN ZHONGLI MINING EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2020410000003 |