CN102705856B - Coal diverter and distributor device - Google Patents
Coal diverter and distributor device Download PDFInfo
- Publication number
- CN102705856B CN102705856B CN201210037424.6A CN201210037424A CN102705856B CN 102705856 B CN102705856 B CN 102705856B CN 201210037424 A CN201210037424 A CN 201210037424A CN 102705856 B CN102705856 B CN 102705856B
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- Prior art keywords
- allotter
- entrance
- outlet
- coal
- distributor body
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- 239000003245 coal Substances 0.000 title claims description 79
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 16
- 239000008187 granular material Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 241001609030 Brosme brosme Species 0.000 claims description 8
- 239000002817 coal dust Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 7
- 241000264877 Hippospongia communis Species 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012857 repacking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The present invention relates to the diverter of a kind of solid particle for being distributed in the fluid of tubing flowing, it includes dispenser housing.Described dispenser housing has and is configured to connect to the entrance of upstream line and has multiple outlet, and each outlet is configured to connect to corresponding downstream line.Distributor body is arranged in described dispenser housing.Including multiple allotter blades, it respectively extends to described dispenser housing since described distributor body.Described dispenser housing, distributor body and the configuration of allotter vanes and adapted be fed to each outlet to reduce from the inhomogeneities in the granule density of described entrance and the granule stream that will substantially equalize.
Description
Technical field
The present invention relates to the distribution of the solid particle flowed in a fluid, and relate more particularly to the sky through coal pipeline system
Coal particle distribution in air-flow.
Background technology
The various device and methods for the coal of powdered is transported to coal combustion machine are known in the art.These are a little
Many in device improves distribution of particles in the coal pipeline system going burning for transporting coal.
Coal power plant needs to supply coal as fuel to produce the effective ways of thermoelectricity.Raw coal is generally at coal pulverizer or mill
By powdered to produce little coal particle or coal dust in machine.The coal of powdered then must be transported to combustor or burning
Machine, herein, it can be used for burning.This generally utilizes coal pipeline system to complete, and described coal pipeline system uses air stream
From described grinding machine or pulverizer, the coal particle of powdered is transported to nozzle, and at described nozzle, coal particle is injected into coal
In combustor or combustor.Along with coal particle is being advanced in the air stream of tubing, pipeline and geometric pipeline shape
In knee the most usually cause uneven coal particle to be distributed.Extend through coal particle intensive of tubing
Build-up areas is referred to as coal and " restricts ".
Operation and maintenance that coal wiring is united for coal measures cause various technical matters.The poor distribution of coal particle may extend into
In combustion zone, herein the imbalance of the local in fuel/air mixture usually cause inefficient combustion and the NOX of raising,
CO and the discharge of other pollutant.It also can cause improve the standard in coal ash unburned carbon contained, and this is by reduction burning effect
Rate.And, the high abrasion of the coal wiring of the assembly of clash into and rub coal pipeline and combustion system causes in described system
Pipeline and a large amount of erosions of other assembly, cause needing running check, maintenance and replacement part.If not with side timely
Formula carries out checking, keep in repair and replacing, then there is the abrasion from coal wiring and will cause costliness or the risk of disturbance of key component
The probability of raising.
For coal wiring, an especially problematic assembly is the dispensing head of junction, and described connection is positioned at single upstream
Between pipeline and two or more downstream branch pipelines, (for example) is as commonly found in orientation flame combustion machine-made egg-shaped or honey-comb coal briquets spray
The upstream of mouth.In this dispensing head, if the stream with coal rope enters described dispensing head, then the one in tributary, downstream will
Usually receive the coal rope section of described stream, it means that the one in downstream nozzle will be than other nozzle or be connected to identical point
The nozzle joining head receives the most more coal.
It is gratifying for having generally been considered these a little conventional methods and system for its set purpose.But, citing and
Speech, yet suffers from the needs to the system and method that the dispensing head downstream particulate allowing to improve is distributed in technique.This
Technology also yet suffers from the needs to this type of system and method that is easily fabricated and that use.The present invention provides these problems
Solution.
Summary of the invention
The present invention is directed to the new of the solid particle for being distributed in the fluid of tubing flowing and useful dividing
Stream device.For example, described diverter can be the coal dust for being distributed in the air stream of coal pipeline system flowing
Coal diverter.Diverter includes dispenser housing, and it has and is configured to connect to the entrance of upstream line and has multiple
Outlet, each outlet is configured to connect to corresponding downstream line.Distributor body is arranged in described dispenser housing.
Including multiple allotter blades, it respectively extends to described dispenser housing since described distributor body.Outside described allotter
Shell, distributor body and allotter vanes configure and adapted to reduce from the inequality in the granule density of described entrance
Even property and the granule stream that will substantially equalize are fed to each outlet.
According to some embodiment, described distributor body is cone and is coaxially mounted in dispenser housing.Allotter
Body can diverge on the direction that the entrance of dispenser housing exports to it, and can be generally from the entrance of dispenser housing
Extend to its outlet.Expection entrance can be by the outer tusk placing interval that extends internally in profile of tooth.Entrance and outlet
Other suitable shape circular or any can be respectively.
In certain embodiments, multiple allotter blades include around the longitudinal axis extending to outlet from the entrance of distributor body
Four circumferentially spaced allotter blades.The circle spacing of allotter blade can be uniform with 90 ° be spaced apart.
Allotter blade can generally from described entrance extend to described outlet and can each with described longitudinal axis parallel alignment.
Expection dispenser housing can include relative with the entrance of dispenser housing and generally with the entrance from distributor body
Extend to the exit plate of the axis oriented normal of outlet.The outlet of dispenser head can be four circles defined via described exit plate
Outlet.Each allotter blade can be evenly spaced between the reply mutually of four round exits.Exit plate can have rectangle
Periphery, wherein the one in allotter blade is arranged on the midpoint of its every side.It is also contemplated that outside the rectangle of connection outlet plate
Each corner of the corresponding side enclosed can be circular, and can be generally coaxial to the corresponding one in outlet.
According to some aspect, entrance defines inlet area, and outlet defines open area, and described inlet area with described go out
The ratio of open area can be about 1.0.Dispenser housing, distributor body and allotter blade can be configured and adapted with
There is less than about 3.2inH from the inlet to the outlet2The pressure drop of O.
From below in conjunction with graphic detailed description of the preferred embodiment, those skilled in the art will more easily understand
These and other feature of the system and method for the present invention.
Accompanying drawing explanation
Graphic the preferred embodiments of the present invention are described in detail below with reference to some, in order to the neck belonging to the present invention
The technical staff in territory will be more readily understood and how to manufacture and use assembly of the invention and method need not carry out too much
Experiment, wherein:
Fig. 1 is the perspective view of the part of the one exemplary embodiment of the coal pipeline system according to present invention structure, and its displaying is used for
Flow point from single upstream coal pipe is fitted on the diverter unit of four downstream coal pipes；
Fig. 2 is the decomposition diagram of the part of the coal pipeline system of Fig. 1, and it was shown from dividing that upstream and downstream line separate
The enlarged drawing of stream device, wherein exit plate separates from diverter；
Fig. 3 is the decomposition diagram of the diverter of Fig. 2, and it shows distributor body, allotter blade and profile of tooth entrance
Tusk；
Fig. 4 is the sectional perspective view of the part of the diverter of Fig. 2, distributor body that its presentation group is fitted together, distribution
Device blade and exit plate；And
Fig. 5 is the sectional perspective view of the part of the diverter of Fig. 4, and it is illustrated in outer wall and the outlet removing dispenser housing
Profile of tooth entrance, distributor body and allotter blade in the case of plate.
Detailed description of the invention
Referring now to graphic, the similar structures feature of the most identical reference number mark present invention or aspect.For solution
Release and illustrative not limiting purpose, the partial view of the one exemplary embodiment of the coal pipeline system according to the present invention is shown
Indicate in FIG and generally by reference marks 100.As will be described, by other reality of the coal pipeline system according to the present invention
Execute example or its aspect provides in Fig. 2 is to 5.The system and method for the present invention can be used in (for example) coal pipeline system
System and the like improves the distribution of particles in pipeline division downstream.
Coal pipeline system 100 include for transport in the air stream from upstream source (such as pulverizer) coal dust with under
The upstream line 102 of burning in trip combustor or boiler.Diverter 104 be connected to pipeline 102 and include intraware (under
Literary composition is described in greater detail) for the solid particle being evenly distributed in the fluid of system 100 flowing.Come
Division in the stream of upstream line 102 is caused by diverter 104, and described division completes in downstream coal pipes 110.
Although only can be seen that three pipelines 110 in the view of Fig. 1, but (for example) a total of four pipelines 110,
It leads to four corresponding coal nozzles, and at described coal nozzle, coal is injected into for burning.
With reference now to Fig. 2, diverter 104 is configured to be arranged between upstream line 102 and downstream line 110.Pipe
The round flange 112 in road 102 can be tightened to the circle of diverter 104 by (for example) bolt (such as bolt 114) bolt
Shape flange 116.Four pipelines 110 are connected to diverter 104 by welding (or other suitable interconnection technique any).
Expection (for example) is by being assemblied between existing pipeline flanges, and diverter 104 may be installed existing upstream coal pipe
And as the repacking to existing system between four downstream line, described repacking needs few change or need not change.
It is also contemplated that diverter (such as diverter 104) may be installed in the coal pipeline system of neotectonics.
With reference now to Fig. 3, the intraware of diverter 104 is included in dispenser housing 124, as it has been described above, its bag
Include the round entrance 126 being installed to upstream coal pipe 102 by flange 116.Entrance 126 is by placing outward the tooth at interval
Shape thing 132 and in profile of tooth, described tusk 132 is placed outside and is extended radially inwardly (at figure between the breach 134 at interval
In 3, for purposes of clarity, only some in tusk 132 and breach 134 are marked by reference marks).A total of
16 tusks 132 and 16 breach 134, but, those skilled in the art will readily appreciate that any properly
Tusk/the breach of number can be used for different application without deviating from spirit and scope of the present invention.Dispenser housing 124
The port of export 127 be typically rectangle.Dispenser housing 124 includes exit plate 108, and it is mounted to when assembling and enters
Mouth 126 is the most vertical with longitudinal axis A.Exit plate 108 is typically rectangle, and the corner of the periphery of exit plate 108 and
The port of export 127 has rounded corner.
The outside of dispenser housing 124 and interior surface generally define a shape, and it is the circle at round entrance 126
Cross section is to the continuous mixture of the square cross section at rectangular outlet 127.Although the rectangle of dispenser housing 124 goes out
Mouthfuls 127 show and are depicted as foursquare, but those skilled in the art will readily appreciate that any other is suitable
The rectangle of ratio or any other generally suitably shape can be used in described outlet without deviating from the spirit of the present invention and
Scope.
Referring still to Fig. 3, exit plate 108 includes five circular ports defined via it, and it includes four outlet openings 140,
Herein, four downstream line 110 may be connected to diverter 104.Remaining hole is medium pore 142, and it connects when assembling
Receive the hollow outlet end of distributor body 128, so the center of diverter 104 is open, the cone of hollow.
Each in the rounded corner of exit plate 108 is coaxial with the most neighbouring outlet opening 140.
Distributor body 128 is coaxially, axle is alignedly arranged in dispenser housing 124, and from dispenser housing 124
Arrival end extend to its port of export 127.Distributor body 128 is conical and in entering from dispenser housing 124
Mouth end diverges on the direction of its port of export 127.
Referring still to Fig. 3, four allotter blades 130 are included in dispenser housing 124, and it is the most intracardiac
Distributor body 128 extend radially into the lengthwise outer wall 106 of dispenser housing 124.By dispenser housing 124, divide
Orchestration body 128 and allotter blade 130 are welded together, but be used as other appropriate technology any connect and not
Depart from spirit and scope of the present invention.
Fig. 4 is illustrated in and removes the diverter 104 in the case of outer wall 106 to show distributor body 128 and allotter leaf
The layout of sheet 130.Four allotter blades 130 around the longitudinal axis of distributor body 128 circumferentially with the interval of 90 °
Spaced apart.On described direction of principal axis, four allotter blades 130 extend to outlet from the arrival end of dispenser housing 124
End, and terminate near the port of export of distributor body 128.As demonstrated in Figure 5, the outlet of distributor body 128
End is hollow, as it has been described above, end is open and is connected to medium pore 142 when assembling downstream.
Allotter blade 130 each extends to the longitudinal axis of the port of export (in figure 3 with the arrival end from distributor body 128
It is labeled as A) parallel alignment.Four allotter blades 130 each and the rectangular outlet end 127 of dispenser housing 124 and
The center alignment at the edge of exit plate 108.The radially inward edge of each allotter blade 130 and radially outward edge respectively with
The neighbouring surface of distributor body 128 and the abutment surface of outer wall 106 are consistent.The distribution shown in Fig. 2 and 4 to 5
Device blade 130 is exemplary with tusk 132 and being directed at of breach 134 of entrance 126, as it is expected that this can be used
Any proper alignment of a little elements is without deviating from spirit and scope of the present invention.
Diverter 104 usually two parts structure, i.e. in the ring of dentation entrance 126 and the major part of diverter 104
Four-way distributor, described diverter 104 includes four allotter blades 130.The overall shape of above-mentioned diverter 104
And stream region is configured in the coal pipeline system of use diverter 104 reduce the impact on pressure drop or make pressure drop
Impact minimize.Expection is smaller than about 3.2inH through the pressure drop of diverter 1042O.Quantify the pressure in this type of system
The good method of power fall is to measure to be positioned at the pressure in the plane at device upstream and downstream 3-5 diameter.Although it is also contemplated that via
The stream region that diverter 104 defines need not be always along flow path from the inlet to the outlet, it is preferable that inlet area
With the ratio of discharge area (all outlet ports is added together) close to 1.0.
Dispenser housing 124, distributor body 128 and allotter blade 130 are configured and adapted to reduce from entering
Mouthful granule density in inhomogeneities and the granule stream that will substantially equalize from the port of export 127 be fed to downstream line 110
In each.Especially, diverter 104 is configured to break coal rope and (be such as described in four downstream line
The downstream line in orientation flame combustion machine-made egg-shaped or honey-comb coal briquets nozzle in 5,623, No. 884 United States Patent (USP)s, described patent is quoted in full
Mode is incorporated herein) between redistribute coal particle.
Diverter 104 produces the distribution of more uniform coal in the coal stream flowing through it, and it causes the controlled burning performance improved.
Diverter 104 is also configured to and adapted with balance upstream coal pipe (such as, pipeline 102) and four downstream line (examples
Such as, pipeline 110) between the coal stream of distribution point.In other words, diverter 104 is by breaking any coal rope to incite somebody to action
Substantially equal coal amount provides each downstream line 110 and also by substantial uniform in each downstream line 110
Ground distribution coal particle improves coal particle distribution.This by break the toothed annulus of the entrance 126 of any coal wiring combination and
Completed by the diverter of the blade 130 of the distribution in distribution further and balance granules to four downstream line 110.
When four downstream line 110 be orientation flame combustion machine-made egg-shaped or honey-comb coal briquets nozzle a part of time, this is particularly advantageous.
Because the stream in diverter 104 balance line system 100, so the coal particle in each downstream line 110 and sky
The more uniform distribution of gas produce more uniform, relatively balance flow to combustor downstream, nozzle or the like.Diverter
The concrete shape of 104 uses the tilting zone (such as, the surface of distributor body 128) of circumference around device, segmentation
The combination of region (such as, the tooth-like part of anything of entrance 126) and solid region (such as, the surface of blade 130) is produced
The region of raw cross-mixing.The accurately placement of diverter 104 is to orient based on coal pipeline and is weight for optimum fuel balance
Want.Placement displayed and described herein is exemplary, and those skilled in the art will readily appreciate that and appoints
What its suitably location can be used for given application without deviating from spirit and scope of the present invention.
Although be described under the Exemplary context of four downstream line 110 above, but those skilled in the art
Will readily appreciate that and any suitable number of downstream line can be used without deviating from spirit and scope of the present invention.Citing and
Speech, equilateral triangle configuration can replace square configuration to be used for the application of only three downstream line.And, although herein
It is described under the Exemplary context of coal pipeline system, but those skilled in the art will readily appreciate that herein
Described method and device can be used together with the stream with the granule flowed in a fluid of other suitable type any
Without deviating from spirit and scope of the present invention.
The method and system of the present invention (as described above and graphic middle shown) provide the system for distribution of particles,
It has preferable characteristic, flows including more uniform dispenser head downstream.Although showing with reference to preferred embodiment and describing
The Apparatus and method for of the present invention, but those skilled in the art will readily appreciate that and can make a change it and/or change
Dynamic without deviating from spirit and scope of the present invention.
Claims (20)
1. for being distributed in the fluid of tubing a diverter for the solid particle of flowing, described diverter bag
Contain:
A) dispenser housing, it has and is configured to connect to the entrance of upstream line and has relative with described entrance
Exit plate, described exit plate has the multiple outlets defined through it, and each described outlet is configured to connect to
Corresponding downstream line；
B) distributor body, it is arranged in described dispenser housing；And
C) multiple allotter blades, it respectively extends to described dispenser housing since described distributor body, and it is each
The port of export of described distributor body is extended to, outside wherein said allotter from the arrival end of described distributor body
Shell, distributor body and allotter vanes configure and adapted to reduce in the granule density of described entrance
Inhomogeneities and the granule stream that will substantially equalize are fed to each outlet.
Diverter the most according to claim 1, wherein said distributor body is cone and is coaxially mounted to described
In dispenser housing.
Diverter the most according to claim 2, wherein said distributor body is entering from described in described dispenser housing
Mouth diverges on the direction of outlet it described.
Diverter the most according to claim 3, wherein said distributor body is generally from the institute of described dispenser housing
State entrance and extend to its described outlet.
Diverter the most according to claim 1, wherein said entrance is by the outer tusk placing interval extended internally
And in profile of tooth.
Diverter the most according to claim 1, wherein said entrance and outlet are respectively circle.
Diverter the most according to claim 1, wherein said multiple allotter blades include around described distributor body
Four allotter blades circumferentially separating with the compartment of 90 ° of the longitudinal axis.
Diverter the most according to claim 1, wherein said allotter blade generally extends to described from described entrance
Outlet.
Diverter the most according to claim 1, wherein said allotter blade each and extends to described from described entrance
The longitudinal axis parallel alignment of outlet.
Diverter the most according to claim 1, wherein said exit plate is generally perpendicular to the institute from described distributor body
Stating entrance and extend to the longitudinal axis of described outlet, the described outlet of wherein said dispenser housing is via described exit plate
Four round exits defined, wherein said multiple allotter blades include around the described longitudinal axis circumferentially spaced
Four allotter blades, each of which allotter blade between corresponding a pair of described four round exits uniformly
Interval, ground.
11. diverters according to claim 10, wherein said exit plate has rectangular periphery, wherein said allotter
Blade is separately mounted to the midpoint of its every side.
12. diverters according to claim 11, wherein connect the corresponding side of the described rectangular periphery of described exit plate
Each corner is rounded.
13. diverters according to claim 12, each rounded corner of wherein said exit plate is generally with described
Corresponding one in outlet is coaxial.
14. diverters according to claim 1, wherein said entrance defines inlet area, and described outlet defines actinal surface
Amass, and the ratio of wherein said inlet area and described discharge area is about 1.0.
15. diverters according to claim 1, wherein said dispenser housing, distributor body and allotter vanes
Configure and adapted to have less than 3.2inH to described outlet from described entrance2The pressure drop of O.
16. 1 kinds for being distributed in the air stream of coal pipeline system the coal diverter of the coal dust of flowing, described coal diverter
Comprise:
A) dispenser housing, it has and is configured to connect to the round entrance of upstream coal pipe and has and described entrance
Relative exit plate, described exit plate has four round exits defined through it, and each outlet is configured to
It is connected to corresponding downstream coal pipes；
B) it is arranged on the distributor body in described dispenser housing；And
C) multiple allotter blades, it respectively extends to described dispenser housing since described distributor body, and it is each
The port of export of described distributor body is extended to, outside wherein said allotter from the arrival end of described distributor body
Shell, distributor body and allotter vanes configure and adapted to reduce in the coal particle concentration of described entrance
Inhomogeneities and the coal particle stream that will substantially equalize be fed to each outlet.
17. coal diverters according to claim 16, wherein said distributor body is cone and is coaxially mounted to
In described dispenser housing, wherein said distributor body generally extends from the described entrance of described dispenser housing
To described exit plate, and wherein said distributor body is going out to described in it from the described entrance of described dispenser housing
Diverge on the direction of mouth.
18. coal diverters according to claim 16, wherein said entrance is by the outer tooth placing interval extended internally
Shape thing and in profile of tooth.
19. coal diverters according to claim 16, wherein said multiple allotter blades include around from described entrance
Extending to four allotter blades that the longitudinal axis of described outlet is circumferentially spaced, each of which allotter blade exists
Being evenly spaced between corresponding a pair of described four outlets, wherein said allotter blade is generally from described entrance
Extend to described outlet, wherein said allotter blade each with described longitudinal axis parallel alignment, wherein said exit plate
Having rectangular periphery, wherein said allotter blade is separately mounted to the midpoint of its every side, and wherein connects institute
Each corner of the corresponding side stating the described rectangular periphery of exit plate rounded and generally with the phase in described outlet
Answer one coaxial.
20. coal diverters according to claim 16, wherein said entrance defines inlet area, and described outlet defines
Open area, wherein said inlet area is about 1.0, and wherein said allotter leaf with the ratio of described discharge area
Sheet is configured and adapted to have less than 3.2inH to described outlet from described entrance2The pressure drop of O.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/048,921 US8403602B2 (en) | 2011-03-16 | 2011-03-16 | Coal flow splitters and distributor devices |
| US13/048,921 | 2011-03-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705856A CN102705856A (en) | 2012-10-03 |
| CN102705856B true CN102705856B (en) | 2016-11-30 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1871853A (en) * | 1927-08-09 | 1932-08-16 | Joseph E Kennedy | Pneumatic transporting and distributing of pulverized material |
| US4392438A (en) * | 1981-06-22 | 1983-07-12 | R & D Associates | Coal transport system |
| WO2009134542A2 (en) * | 2008-04-30 | 2009-11-05 | Babcock Power Inc. | Anti-roping device for pulverized coal burners |
| WO2010021892A2 (en) * | 2008-08-21 | 2010-02-25 | Riley Power, Inc. | Deflector device for coal piping systems |
| CN102644934A (en) * | 2011-01-20 | 2012-08-22 | 巴布科克电力服务公司 | Coal flow balancing devices |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1871853A (en) * | 1927-08-09 | 1932-08-16 | Joseph E Kennedy | Pneumatic transporting and distributing of pulverized material |
| US4392438A (en) * | 1981-06-22 | 1983-07-12 | R & D Associates | Coal transport system |
| WO2009134542A2 (en) * | 2008-04-30 | 2009-11-05 | Babcock Power Inc. | Anti-roping device for pulverized coal burners |
| WO2010021892A2 (en) * | 2008-08-21 | 2010-02-25 | Riley Power, Inc. | Deflector device for coal piping systems |
| CN102644934A (en) * | 2011-01-20 | 2012-08-22 | 巴布科克电力服务公司 | Coal flow balancing devices |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20210216 |