CN201373392Y - Boiler raw coal bin anti-blocking coal drop pipe - Google Patents
Boiler raw coal bin anti-blocking coal drop pipe Download PDFInfo
- Publication number
- CN201373392Y CN201373392Y CN 200920068594 CN200920068594U CN201373392Y CN 201373392 Y CN201373392 Y CN 201373392Y CN 200920068594 CN200920068594 CN 200920068594 CN 200920068594 U CN200920068594 U CN 200920068594U CN 201373392 Y CN201373392 Y CN 201373392Y
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- coal
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- blocking
- hypomere
- stage casing
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Abstract
The utility model discloses a boiler raw coal bin anti-blocking coal drop pipe, which belongs to a boiler raw coal bin coal feeding equipment and consists of an upper section, a middle section and a lower section connected integrally from up to down in sequence; both the upper section and the middle section are conical cylinders which are larger in the upper port and smaller in the lower port; the upper section is a conical cylinder with a rectangle lower port larger than a round lower port; the upper port of the middle section is matched with the size of the lower port of the upper section; the lower port of the middle section is matched with the size of the upper port of the lower section; the upper section, the middle section and the lower section are connected into a hyperbolic cylinder structure. The boiler raw coal bin anti-blocking coal drop pipe has the beneficial effects that the device is simple to be manufactured, is convenient to be mounted, and is durable.
Description
Technical field
The utility model relates to boiler run coal bin coal supply equipment.It specifically is the anti-blocking coal spout of a kind of boiler run coal bin.
Technical background
Existing power plant 135MW unit boiler has two coal bunkers, and the volume of each coal bunker is 420m3, and coal storage is about 250 tons.Each coal bunker bottom is installed one and is given seam, and every has a sealing belt-type feeder to seam, adopts the front wall coal supply.Each feeder has a coal feeding hole, altogether six coal feeding holes.Together manual insertion plate door, a startup insertion plate door are set on the material blanking tube of each coal feeding hole.Under normal circumstances, the coal in the coal bunker to feeder, is transported to boiler by feeder by deadweight meeting Continuous Flow.Coal spout between outlet of coal bunker cone and feeder is circular bobbin, and the problem of its existence is that coal is not smooth down, causes unit to be forced to load shedding sometimes.Keep unit operation because of underload, greatly reduce unit efficiency.
Summary of the invention
The utility model provides a kind of boiler run coal bin anti-blocking coal spout, is used to solve the not smooth problem of coal under the 135MW unit coal bunker of CFBB.
The utility model is realized with following technical scheme: the anti-blocking coal spout of a kind of boiler run coal bin, it is characterized in that, and form by being in turn connected into holistic epimere, stage casing and hypomere from top to bottom; Epimere and stage casing are big down young conical tube suitable for reading, and hypomere is that circular end opening rectangle suitable for reading and end opening are greater than conically shaped suitable for reading; The end opening size of the suitable for reading and epimere in stage casing is coincide, and the size suitable for reading of the end opening in stage casing and hypomere is coincide; Upper end, stage casing and hypomere connect into double curve shape tubular structure.
Owing to adopted said structure, promptly adopted the hyperbolic-type coal spout with connecting of feeder section in the outlet of coal bunker cone, reduce the influence of external force to greatest extent, guaranteed the coal flow velocity degree of coal bunker cone outlet, sink to the influence of feeder when having overcome the coal bunker load-bearing coal stream.Make the coal in the coal bunker lean on deadweight meeting Continuous Flow, be transported to boiler by feeder to feeder.
The beneficial effects of the utility model are: this device is made simple, and is easy for installation, durable in use.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model structural representation;
Fig. 2 is the hypomere structural representation;
Fig. 3 is the upward view of hypomere.
Among the figure: 1, epimere, 2, the stage casing, 3, hypomere.
The specific embodiment
As shown in Figure 1, anti-blocking coal spout integral body is the hyperbola tubular structure, be divided into is three sections, epimere 1, stage casing 2 and hypomere 3, for the ease of coal spout is connected with the feeder mouth, hypomere 3 is made the shape of hemispherical dome, and promptly the suitable for reading circular end opening rectangle of hypomere and end opening are greater than conically shaped suitable for reading.In the present embodiment:
Epimere 1 is a cone, and the cone angle is 69.4 °, adopts corrosion resistant plate to roll and is welded, and the corrosion resistant plate material adopts 1Cr18Ni9Ti, thickness of slab 12mm.Epimere 1 high h1 is 400mm, and back cut diameter r1 is 1200mm, and lower port diameter r2 is 900mm.
Stage casing 2 is a cone, and the cone angle is 83 °, adopts corrosion resistant plate to roll and is welded, and the corrosion resistant plate material adopts 1Cr18Ni9Ti, thickness of slab 12mm.Stage casing 2 high h2 are 444mm, and back cut diameter is 900mm, and lower port diameter r3 is that this section of 800mm. adopts the mode of welding with connecting of epimere, is to guarantee welding quality, and the steel plate edge is opened and got groove, 30 ° of bevel angles, and weld reinforcement is not more than 4mm.
Fig. 1, Fig. 2 and shown in Figure 3, hypomere 3 are hemispherical dome shape centrum, and the tapering of hypomere (3) conically shaped is 84 °.Adopt corrosion resistant plate to roll, suppress, be welded, the corrosion resistant plate material adopts 1Cr18Ni9Ti, thickness of slab 12mm.The high h3 of this section is 1200mm, and back cut diameter is 800mm, and the rectangle end opening is of a size of r41050 * r5500mm.This section adopts the mode of welding with connecting of stage casing, is to guarantee welding quality, and steel plate edge weld is opened and got groove, 30 ° of bevel angles, and weld reinforcement is not more than 4mm.
Claims (4)
1, the anti-blocking coal spout of a kind of boiler run coal bin is characterized in that, forms by being in turn connected into holistic epimere (1), stage casing (2) and hypomere (3) from top to bottom; Epimere (1) and stage casing (2) are big down young conical tube suitable for reading, and hypomere (3) is that circular end opening rectangle suitable for reading and end opening are greater than conically shaped suitable for reading; The end opening size of the suitable for reading and epimere (1) in stage casing (2) is coincide, and the size suitable for reading of the end opening of stage casing (2) and hypomere (3) is coincide; Upper end (1), stage casing (2) and hypomere (3) connect into double curve shape tubular structure.
2, the anti-blocking coal spout of boiler run coal bin according to claim 1 is characterized in that, the tapering of epimere (1) conical tube is 69.4 °.
3, the anti-blocking coal spout of boiler run coal bin according to claim 1 is characterized in that, the tapering of stage casing (2) conical tube is 83 °.
4, the anti-blocking coal spout of boiler run coal bin according to claim 1 is characterized in that, the tapering of hypomere (3) conically shaped is 84 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920068594 CN201373392Y (en) | 2009-03-09 | 2009-03-09 | Boiler raw coal bin anti-blocking coal drop pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920068594 CN201373392Y (en) | 2009-03-09 | 2009-03-09 | Boiler raw coal bin anti-blocking coal drop pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373392Y true CN201373392Y (en) | 2009-12-30 |
Family
ID=41499478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920068594 Expired - Fee Related CN201373392Y (en) | 2009-03-09 | 2009-03-09 | Boiler raw coal bin anti-blocking coal drop pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373392Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285500A (en) * | 2011-05-12 | 2011-12-21 | 西安交通大学 | Coal blockage preventing for raw coal bin device in fuel electric plant |
-
2009
- 2009-03-09 CN CN 200920068594 patent/CN201373392Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285500A (en) * | 2011-05-12 | 2011-12-21 | 西安交通大学 | Coal blockage preventing for raw coal bin device in fuel electric plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20120309 |