CN205708941U - Double-deck split anti-blocking raw coal bucket - Google Patents
Double-deck split anti-blocking raw coal bucket Download PDFInfo
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- CN205708941U CN205708941U CN201620358756.8U CN201620358756U CN205708941U CN 205708941 U CN205708941 U CN 205708941U CN 201620358756 U CN201620358756 U CN 201620358756U CN 205708941 U CN205708941 U CN 205708941U
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Abstract
The utility model discloses a kind of double-deck split anti-blocking raw coal bucket, including upper coal bunker and lower coal bunker, connect at the coal-in port of upper coal bunker and have coal bunker, the coal outlet arranged beneath of lower coal bunker to have feeder；The coal outlet of upper coal bunker inserts the coal-in port of lower coal bunker；The coal-in port of lower coal bunker and coal outlet are all higher than the coal outlet of coal bunker, to expand coal breakage finite region.The coal outlet of upper coal bunker can be circular or rectangle, the coal feed point of lower coal bunker and coal outlet are rectangle.Coal breakage region axis along its length is parallel with material feeding belt centerline.Lower coal bunker top is provided with flase floor, and flase floor is provided with the opening adapted with upper coal bunker.Arrange flase floor to be easy to staff and observe and disclose coal and dredge.After using design of the present utility model, due to the unexpected increase of coal bunker sectional area, the wall of lower coal bunker is not subject to the pressure that in coal bunker, coal column produces, and reduce wall compresses and rubs against effect, can solve canopy coal phenomenon, be substantially reduced the probability of chute blockage.
Description
Technical field
This utility model patent relates to coal fired power plant, refers to a kind of double-deck split anti-blocking raw coal bucket especially.
Background technology
Chute blockage is one of important problem of puzzlement coal-fired power station boiler safe operation, and the reason causing chute blockage is a lot, and wherein the raw coal bucket design unreasonable structure of coal handling system is one of extremely important reason.When raw coal lands in raw coal bucket, constantly it is squeezed owing to coal bunker sectional area constantly shrinks, can be the biggest closer to lower coal port part frictional force and extruding force.If raw coal is wetter or coal cinder is more loose, caking property of coal is stronger, then it is easy to occur that lower coal is not smooth, finally develops into blocking.Chute blockage can cause rapping apparatus initiation culture to increase, defeated coal efficiency reduces, and increases station service；Coal supply then can be caused time serious not enough, cause boiler output reduction, operational factor fluctuation, the most flame-out, cause serious financial consequences.
Following two aspect is essentially consisted in place of current raw coal bucket design unreasonable structure:
1) raw coal bucket coal outlet size is less than normal.According to engineering experience, the keypoint part of chute blockage is at coal bunker lower area, and it is tapered and cause that this is mainly raw coal bucket bottom flow area.Increase the size of coal bunker coal outlet, the generation of chute blockage can be effectively prevented from, but raw coal bucket coal outlet size is limited to the width of material feeding belt.Coal bunker coal outlet is generally designed to the rectangular cross-sectional of aspect ratio, and the width that can meet material feeding belt limits, and also can increase coal dropping port sectional dimension, reduces the probability of chute blockage.
2) on raw coal bucket coal dropping port centrage and material feeding feeder centrage do not parallel to the axis at one.Generally speaking, coal-burning boiler is both provided with multiple run coal bin and raw coal bucket, being parallel to furnace wall arrange, material feeding belt then must be arranged according to coal dropping port and coal feeding hole position deflection, and therefore the centrage of material feeding belt is with coal bunker axis at an angle, restricted by above-mentioned condition, coal bunker coal outlet is difficult to be designed as rectangle, it more difficult to realizes the rectangular cross-sectional of above-mentioned aspect ratio, is typically only capable to be designed to circle, but the diameter of circular coal outlet is similarly limited to the width of material feeding belt, easily causes chute blockage.
To sum up, raw coal bucket is that fortune coal measures unite the core component of transport process, and current design layout there is also some problems, reform is necessary.
Utility model content
The purpose of this utility model is the defect overcoming existing raw coal bucket to easily cause chute blockage, and provides a kind of double-deck split anti-blocking raw coal bucket.
This utility model is realized by following technical scheme:
Double-deck split anti-blocking raw coal bucket, including upper coal bunker and lower coal bunker, connects at the coal-in port of described upper coal bunker and has coal bunker, the coal outlet arranged beneath of described lower coal bunker to have feeder；Material feeding belt it is provided with on described feeder；The coal outlet of described upper coal bunker inserts the coal-in port of described lower coal bunker；The coal-in port of described lower coal bunker and coal outlet are all higher than the coal outlet of described upper coal bunker.
The coal outlet of described upper coal bunker can be circular or rectangle, and the import coal-in port of lower coal bunker and coal outlet are rectangle.
The coal outlet of described lower coal bunker is projected as coal breakage region at described material feeding belt, and the axis along its length in described coal breakage region is parallel with described material feeding belt centerline.
Described lower coal bunker top is provided with flase floor, and described flase floor is provided with the opening adapted with described upper coal bunker.Arrange flase floor to be easy to staff and observe and disclose coal and dredge.
After using design of the present utility model, due to the unexpected increase of coal bunker sectional area, the wall of lower coal bunker is not subject to the pressure that in coal bunker, coal column produces, and reduce wall compresses and rubs against effect, can solve canopy coal phenomenon, be substantially reduced the probability of chute blockage.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model bilayer split anti-blocking raw coal bucket.
Fig. 2 is grating board structure schematic diagram.
Fig. 3 is coal breakage area schematic (rectangle coal outlet, rectangle axis overlaps with material feeding belt).
Fig. 4 is coal breakage area schematic (rectangle coal outlet, rectangle axis is with material feeding belt at an angle).
Fig. 5 is coal breakage area schematic (circular coal outlet).
In figure: run coal bin 1；Upper coal bunker 2；Lower coal bunker 3, feeder 4, flase floor 5, coal breakage region 6, material feeding belt 7.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in further detail, but this embodiment should not be construed restriction of the present utility model, the most for example, simultaneously by illustrating that advantage of the present utility model will become clearer from easy to understand.
As shown in drawings, double-deck split anti-blocking raw coal bucket, including upper coal bunker 2 and lower coal bunker 3, connect at the coal-in port of upper coal bunker 2 and have coal bunker 1, the coal outlet arranged beneath of lower coal bunker 3 to have feeder 4；Material feeding belt 7 it is provided with on feeder 4；The coal outlet of upper coal bunker 2 inserts the coal-in port of lower coal bunker 3；The coal-in port of lower coal bunker 3 and coal outlet are all higher than the coal outlet of coal bunker 2.
The coal outlet of upper coal bunker 2 can be circular or rectangle, and the coal feed point of lower coal bunker 3 and coal outlet are rectangle.
The coal outlet of lower coal bunker 3 is projected as coal breakage region 6 at material feeding belt 7, and the axis along its length in coal breakage region 6 is provided with flase floor 5 with coal bunker 3 top under described material feeding belt 7 centerline parallel, and flase floor 5 is provided with the opening adapted with upper coal bunker 2.
The coal breakage region 6 of material feeding belt 7 is for shown in Fig. 3.Assuming that coal bunker coal outlet width is a, a length of b, material feeding belt width is W, as long as then a≤W, length b is then not only restricted to material feeding belt width.Therefore, it can expand coal bunker coal outlet area as required, be substantially reduced the probability of chute blockage.
Conventional raw coal bucket is usually integrated design, lower area as it is shown in figure 1, and coal bunker coal outlet be typically designed to rectangle or circle.When coal bunker coal outlet is designed as rectangle, as shown in Figure 4, there is certain angle α in now material feeding belt centerline and coal bunker axis in coal breakage region.Assuming that coal bunker coal outlet width is a, a length of b, material feeding belt width is W, then must have (a cos α+b sin α)≤W, and therefore, coal bunker coal outlet is size-constrained in the width of material feeding belt.When coal bunker coal outlet is designed as circle, coal breakage region is as shown in Figure 5.Assuming a diameter of d of coal bunker coal outlet, material feeding belt width is W, then must have d≤W, and equally, coal bunker coal outlet is size-constrained in the width of material feeding belt.
To sum up, the coal outlet size of conventional raw coal bucket is both limited by the width of material feeding belt 7.And coal bunker 3 only coal outlet restricted width is in the width of material feeding belt 7 under the present invention, length is the most unrestricted, takes higher value when can design as required, can solve the limited chute blockage problem caused of lower coal bunker coal outlet area.
Additionally, lower coal bunker 3 coal outlet length-width ratio is relatively big, therefore it is not susceptible to chute blockage phenomenon.
It should be understood that to those of ordinary skill in the art, this utility model can also be made on the premise of not changing this utility model principle some changes or deformation, this also belongs to protection domain of the present utility model.
Claims (4)
1. double-deck split anti-blocking raw coal bucket, it is characterized in that: include coal bunker (2) and lower coal bunker (3), connecting at the coal-in port of described upper coal bunker (2) has coal bunker (1), the coal outlet arranged beneath of described lower coal bunker (3) to have feeder (4)；Material feeding belt (7) it is provided with on described feeder (4)；The coal outlet of described upper coal bunker (2) inserts the coal-in port of described lower coal bunker (3)；The coal-in port of described lower coal bunker (3) and coal outlet are all higher than the coal outlet of described upper coal bunker (2).
Double-deck split anti-blocking raw coal bucket the most according to claim 1, it is characterised in that: the coal outlet of described upper coal bunker (2) can be circular or rectangle, and coal feed point and the coal outlet of lower coal bunker (3) they are rectangle.
Double-deck split anti-blocking raw coal bucket the most according to claim 2, it is characterized in that: the coal outlet of described lower coal bunker (3) is projected as coal breakage region (6) described material feeding belt (7), the alongst axis of described coal breakage region (6) and described material feeding belt (7) centerline parallel.
4. according to the arbitrary described double-deck split anti-blocking raw coal bucket of claim 1-3, it is characterized in that: described lower coal bunker (3) top is provided with flase floor (5), and described flase floor (5) is provided with the opening adapted with described upper coal bunker (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358756.8U CN205708941U (en) | 2016-04-26 | 2016-04-26 | Double-deck split anti-blocking raw coal bucket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358756.8U CN205708941U (en) | 2016-04-26 | 2016-04-26 | Double-deck split anti-blocking raw coal bucket |
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| CN205708941U true CN205708941U (en) | 2016-11-23 |
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| CN201620358756.8U Active CN205708941U (en) | 2016-04-26 | 2016-04-26 | Double-deck split anti-blocking raw coal bucket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215111A (en) * | 2022-06-13 | 2022-10-21 | 杭州意能电力技术有限公司 | Anti-blocking coal breakage pipe square and round knot and design method thereof |
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2016
- 2016-04-26 CN CN201620358756.8U patent/CN205708941U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215111A (en) * | 2022-06-13 | 2022-10-21 | 杭州意能电力技术有限公司 | Anti-blocking coal breakage pipe square and round knot and design method thereof |
| CN115215111B (en) * | 2022-06-13 | 2023-07-14 | 杭州意能电力技术有限公司 | Anti-blocking coal dropping pipe square round knot and design method thereof |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Chuanhai Inventor after: Tian Qingfeng Inventor after: Zhang Junchun Inventor after: Chou Xiaolong Inventor after: Chen Chen Inventor after: Zhao Peng Inventor after: Cheng Yongxin Inventor after: Chen Yong Inventor before: Xu Chuanhai Inventor before: Tian Qingfeng Inventor before: Zhang Junchun Inventor before: Chou Xiaolong Inventor before: Chen Chen Inventor before: Zhao Peng Inventor before: Cheng Yongxin |