CN102537948A - Replaceable abrasion-resistant coal feeding pipe for circulating fluid bed boiler - Google Patents
Replaceable abrasion-resistant coal feeding pipe for circulating fluid bed boiler Download PDFInfo
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- CN102537948A CN102537948A CN2012100420668A CN201210042066A CN102537948A CN 102537948 A CN102537948 A CN 102537948A CN 2012100420668 A CN2012100420668 A CN 2012100420668A CN 201210042066 A CN201210042066 A CN 201210042066A CN 102537948 A CN102537948 A CN 102537948A
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- coal
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- pipe
- oblique
- abrasion
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Abstract
The invention provides a replaceable abrasion-resistant coal feeding pipe for a circulating fluid bed boiler, which enables the easily-abraded parts to be convenient to replace, reduces the replacing workload, shortens the maintaining time for the coal feeding pipe, and ensures the long-term stable operation of the boiler. The replaceable abrasion-resistant coal feeding pipe includes an oblique pipe, wherein the oblique pipe obliquely faces downward; a coal inlet is arranged on the upper side of the outer circumference of the upper part of the oblique pipe and connected with a vertical coal feeding vertical pipe; and the lower end hole of the oblique pipe is a coal outlet. The replaceable abrasion-resistant coal feeding pipe is characterized in that a limiting block is fastened on the lower side of the inner wall of the oblique pipe and externally protrudes on the inner wall of the oblique pipe; an abrasion-resistant plate is obliquely arranged in the oblique pipe, is arranged in the position right below the coal inlet in the vertical direction, and is closely attached to the inner wall of the lower side of the oblique pipe; the lower end part of the abrasion-resistant plate is closely attached to the limiting block; the upper section of the abrasion-resistant plate is connected with a cover plate; the upper end part of the cover plate extends to an upper end opening of the oblique pipe; and the upper end opening of the oblique pipe is fastened with a cover plate flange.
Description
Technical field
The present invention relates to the feed pipe technical field of structures of CFBB, be specially changeable type CFBB abrasionproof coal-feeding tube.
Background technology
The burning in circulating fluid bed boiler technology is a coal combustion technology that grows up over nearly 20 years, and it has that fuel tolerance is wide, efficiency of combustion is high, discharged nitrous oxides is low, load regulation rate is big and outstanding advantage such as Load Regulation is fast.The coal-feeding tube of existing CFBB weares and teares in fuel impact place that receives vertical drop easily, and is low at fuel value especially, is more prone to when coal-supplying amount is big be worn; Need often to change, and need dismantle many group parts when changing, change trouble; And owing to change trouble; Workload during replacing is big, and the repair time of coal-feeding tube is long, thereby influences the long-term stability operation of boiler.
Summary of the invention
To the problems referred to above, the invention provides changeable type CFBB abrasionproof coal-feeding tube, it makes that the replacing convenience and the replacing workload at position easy to wear are little, reduces the repair time of coal-feeding tube, guarantees the long-term stability operation of boiler.
Changeable type CFBB abrasionproof coal-feeding tube, its technical scheme is such: it comprises inclined tube, said inclined tube is oblique to be arranged down; The upside of the top periphery of said inclined tube is provided with coal feed point, and said coal feed point connects vertical coal supply standpipe, and the following stomidium of said inclined tube is a coal outlet; It is characterized in that: limited block is anchored on the downside of the inwall of said inclined tube; Said limited block evagination is in the inwall of said inclined tube, and wear strip is oblique to be arranged in the said inclined tube, said wear strip be positioned at said coal feed point vertically under the position; The fit downside inwall of said inclined tube of said wear strip; Said limited block is close in the bottom of said wear strip, and the epimere of said wear strip is connected with cover plate, and the upper end of said cover plate extends to the port of said inclined tube; The port of said inclined tube is fastened with the cover plate flange, and the downside near the periphery of port of said inclined tube has air inlet.
After adopting structure of the present invention, coal gets into along coal feed point through the coal supply standpipe, because the gravity effect; The coal of vertical drop under wear strip the certain impact effect is arranged, simultaneously coal stream also can down move ahead along inclined tube, the force action of this both direction makes that the wear strip of erect riser below is ground away easily; As find that this wear strip may wear in the time of can not continuing to use, and can take the cover plate flange of inclined tube port apart, take out the wear strip of experience wear through cover plate; New wear strip in the replacing; It makes that the replacing convenience and the replacing workload at position easy to wear are little, reduces the repair time of coal-feeding tube, guarantees the long-term stability operation of boiler.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
See Fig. 1, it comprises inclined tube 5, inclined tube 5 oblique layouts down; The upside of the top periphery of inclined tube 5 is provided with coal feed point 6, and coal feed point 6 connects vertical coal supply standpipe 7, and the following stomidium of inclined tube 5 is a coal outlet 8; Limited block 1 is anchored on the downside of the inwall of inclined tube 5, and limited block 5 evaginations are in the inwall of inclined tube, wear strip 2 oblique being arranged in the inclined tube 5; Wear strip 2 be positioned at coal feed point 6 vertically under the position, the downside inwall of wear strip 2 applying inclined tubes 5, limited block 5 is close in the bottom of wear strip 2; The epimere of wear strip 2 is connected with cover plate 3; The upper end of cover plate 3 extends to the port of inclined tube 5, and the port of inclined tube 5 is fastened with cover plate flange 4, and the downside near the periphery of port of inclined tube 5 has air inlet 9.
Claims (1)
1. changeable type CFBB abrasionproof coal-feeding tube, it comprises inclined tube, said inclined tube is oblique to be arranged down; The upside of the top periphery of said inclined tube is provided with coal feed point, and said coal feed point connects vertical coal supply standpipe, and the following stomidium of said inclined tube is a coal outlet; It is characterized in that: limited block is anchored on the downside of the inwall of said inclined tube; Said limited block evagination is in the inwall of said inclined tube, and wear strip is oblique to be arranged in the said inclined tube, said wear strip be positioned at said coal feed point vertically under the position; The fit downside inwall of said inclined tube of said wear strip; Said limited block is close in the bottom of said wear strip, and the epimere of said wear strip is connected with cover plate, and the upper end of said cover plate extends to the port of said inclined tube; The port of said inclined tube is fastened with the cover plate flange, and the downside near the periphery of port of said inclined tube has air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100420668A CN102537948A (en) | 2012-02-23 | 2012-02-23 | Replaceable abrasion-resistant coal feeding pipe for circulating fluid bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100420668A CN102537948A (en) | 2012-02-23 | 2012-02-23 | Replaceable abrasion-resistant coal feeding pipe for circulating fluid bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102537948A true CN102537948A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100420668A Pending CN102537948A (en) | 2012-02-23 | 2012-02-23 | Replaceable abrasion-resistant coal feeding pipe for circulating fluid bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537948A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912870A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Wear-resistant type coal supply pipe structure for circulating fluidized bed boiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829368A (en) * | 1996-12-31 | 1998-11-03 | Combustion Engineering, Inc. | Fuel and sorbent feed for circulating fluidized bed steam generator |
| CN201149249Y (en) * | 2007-12-30 | 2008-11-12 | 彭永康 | Coal breaking apparatus for circulating fluid bed boiler |
| CN201343550Y (en) * | 2009-02-19 | 2009-11-11 | 上海宝钢工程技术有限公司 | Alloy feeding buffer structure |
| CN202598500U (en) * | 2012-02-23 | 2012-12-12 | 无锡华光锅炉股份有限公司 | Replaceable anti-wearing coal supply pipe of circulating fluidized bed boiler |
-
2012
- 2012-02-23 CN CN2012100420668A patent/CN102537948A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829368A (en) * | 1996-12-31 | 1998-11-03 | Combustion Engineering, Inc. | Fuel and sorbent feed for circulating fluidized bed steam generator |
| CN201149249Y (en) * | 2007-12-30 | 2008-11-12 | 彭永康 | Coal breaking apparatus for circulating fluid bed boiler |
| CN201343550Y (en) * | 2009-02-19 | 2009-11-11 | 上海宝钢工程技术有限公司 | Alloy feeding buffer structure |
| CN202598500U (en) * | 2012-02-23 | 2012-12-12 | 无锡华光锅炉股份有限公司 | Replaceable anti-wearing coal supply pipe of circulating fluidized bed boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912870A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Wear-resistant type coal supply pipe structure for circulating fluidized bed boiler |
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Application publication date: 20120704 |