CN102003703A - Improved coal sliding tube anti-blocking structure - Google Patents
Improved coal sliding tube anti-blocking structure Download PDFInfo
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- CN102003703A CN102003703A CN 201010611801 CN201010611801A CN102003703A CN 102003703 A CN102003703 A CN 102003703A CN 201010611801 CN201010611801 CN 201010611801 CN 201010611801 A CN201010611801 A CN 201010611801A CN 102003703 A CN102003703 A CN 102003703A
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- sliding tube
- blocking structure
- coal
- coal sliding
- plate
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Abstract
The invention relates to an improved coal sliding tube anti-blocking structure which comprises a coal sliding tube, wherein the coal sliding tube comprises a tilted section; and at least one pneumatic anti-blocking structure is arranged on the tilted section. Because at least one pneumatic anti-blocking structure is additionally arranged on the bottom plate of the coal sliding tube, the phenomena of the wind pressure and the flow velocity attenuation resulted from long pipelines are avoided, an air cushion is formed between coal and the bottom plate, the contact frequency with the bottom plate is reduced, the problem of coal blocking is completely solved, and the service life of the coal sliding tube can be simultaneously prolonged. In addition, the pneumatic anti-blocking structure is formed through the surrounding of steel plates, and the parts of special nozzles and the like are not required to be manufactured, thus, the investment and the maintenance charge can be reduced.
Description
Technical field
The present invention relates to coal sliding tube, be specially the anti-blocking structure of a kind of modified coal sliding tube, belong to the CFBB equipment technical field.
Background technology
All have anti-blocking structure in the coal sliding tube that existing CFBB is used, as shown in Figure 1, this structure is: arrange the coal spread wind structure at coal sliding tube and burner hearth junction, see the defeated coal wind structure of convex lens end layout at coal sliding tube.Yet, because coal sliding tube is longer, relaxation phenomenon will take place in defeated coal wind pressure and flow velocity, and the result is that (as shown in Figure 1) certain position begins and will not have the purpose of conveying between the AB of coal sliding tube base plate section, just is easy to take place the chute blockage phenomenon under the situation of going into stove coal high humidity in addition.The coal sliding tube chute blockage, the lighter causes the operation of boiler load shedding, will directly cause the accident of boiler coke or blowing out when serious, and also has the hidden danger of being scalded in the process of handling chute blockage.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of modified coal sliding tube anti-blocking structure, can thoroughly solve coal sliding tube chute blockage problem.
For achieving the above object, the present invention adopts following technical proposals:
The anti-blocking structure of a kind of modified coal sliding tube comprises coal sliding tube, and coal sliding tube comprises tilting section, is provided with the anti-blocking structure of at least one strength on tilting section.
Described tilting section includes base plate, and the anti-blocking structure of described strength is arranged on this base plate.
Coal sliding tube and burner hearth junction are provided with the coal spread wind interface, and the anti-blocking structure of described strength is arranged on the base plate between the AB section of tilting section, and the base plate between the described AB section is tilting section coal breakage point to the base plate between the coal spread wind interface upper edge.Here the tilting section coal breakage point (A place) of indication promptly refers to have the point that the coal of one section speed and quality at first contacts on tilting section in dropping process.Coal spread wind interface upper edge (B place) refers to the place, upper edge of coal spread wind interface structure.The anti-blocking structure of strength is arranged on the base plate between the AB section of tilting section, and the anti-blocking structure setting of this strength can not comprise AB 2 points.
Described base plate is made up of some blocks of branch plates, and two blocks of adjacent branch plates are overlapped and leave the slit, and these minutes, plate was along the stepped arrangement of coal falling direction; The quantity of the anti-blocking structure of described strength equals the quantity in the some formed slits of branch plate.
The adjacent overlapped length of two blocks of branch plates is 2～10cm, and the distance that leaves the slit is 0～4cm.
The anti-blocking structure of described strength comprises that air compartment and strength carry the wind interface, and air compartment is formed by adjacent two blocks of branch plates and slit thereof and the coaming plate that two branch plate junctions fence up, and strength conveying wind interface is located on this coaming plate.Because with dividing plate to form the slit, so need not settle special parts such as nozzle in this structure.
Described coaming plate is a steel plate.
Here said tilting section is coal sliding tube in leading to the process of burner hearth, certainly exist one section coal sliding tube and tilt, the coal sliding tube of this section inclination we get for " tilting section ".Certainly, tilting section may be whole coal sliding tube, also possibility part coal sliding tube; Possible tilting section and other parts coal sliding tube have significantly " flex point ", and having provided as embodiments of the invention has the obviously coal sliding tube of " flex point ", also may the two not have tangible distinctive points.But which kind of situation no matter, for solving " coal sliding tube is longer; relaxation phenomenon will take place for defeated coal wind pressure and flow velocity ", must the anti-blocking structure of at least one strength be set at tilting section, the position of its setting, quantity, spacing should be decided according to actual conditions, this also is that those skilled in the art can understand, judge, predict and use, so the present invention has all comprised these situations.
The base plate meaning promptly is made up of some blocks of branch plates in the bottom surface of tubular, leave the space along the coal falling direction between the some blocks of branch plates, two plates are apart on the above-below direction, but divide the other both sides (both sides on the left and right directions) of plate to link to each other with the tilting section coal sliding tube of other parts.Base plate divides the shape of plate to adapt with the state of tilting section cylindrical shell in other words, can be circular arc on left and right directions, also can be also shape linearly.Certainly, base plate divides the width of plate also should to adapt with the size of tilting section cylindrical shell in other words, is advisable to reach best defeated coal effect.
Owing to set up the anti-blocking structure of a plurality of strengths on the coal sliding tube base plate of the present invention, avoided because of the long relaxation phenomenon that produces blast and flow velocity of pipeline, make and form air cushion between coal and the base plate, reduce contact frequency with base plate, thoroughly solve the chute blockage problem, can also prolong the service life of coal sliding tube simultaneously.In addition, the anti-blocking structure of this strength all surrounds with steel plate, does not need to make parts such as special nozzle, therefore, also can reduce investment and maintenance cost.
Description of drawings
Fig. 1 is the prior art structural representation;
Fig. 2 is a coal sliding tube structural representation provided by the invention;
Fig. 3 is the anti-blocking structure enlarged drawing of strength.
Wherein 1. coal sliding tubes are 2. assisted defeated coal wind interface, and 3. flame-observing mirror is 4. failed coal wind interface, 5. tilting section, 6. coal spread wind interface, 7. burner hearth, the 8. anti-blocking structure of strength, 9. minute plate, 10. air compartment.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
The anti-blocking structure of a kind of modified coal sliding tube, as shown in Figure 2, coal sliding tube 1 can be divided into two sections substantially according to its shape, be vertical section and tilting section 5, the cross section of tilting section is square, be respectively equipped with defeated coal wind interface 4 and auxiliary defeated coal wind interface 2 about vertical section and tilting section 5 junctions, the junction of the bottom of tilting section 5 and burner hearth 7 is provided with coal spread wind interface 6, be provided with flame-observing mirror 3 in tilting section 5 and vertical section junction, of the present invention focusing on, according to the length of coal sliding tube 1, the base plate of described coal sliding tube 1 is made up of 4 blocks of branch plates parallel to each other, two blocks of adjacent branch plates are overlapped and leave the slit, and these minutes, plate was along the stepped arrangement of coal falling direction; On the AB of tilting section 5 section base plate, be provided with 3 anti-blocking structures 8 of strength, described AB section base plate is tilting section 5 coal breakages point to the base plate between coal spread wind interface 6 tops, with reference among Fig. 1 shown in the coal sliding tube, the tilting section 5 coal breakage points of indication promptly refer to have the point that the coal of one section speed and quality at first contacts on tilting section 5 in dropping process here.Assemble according to shown in Figure 3, adjacent base plate is parallel to each other and leave certain slit δ, is 0～4cm according to the unusual δ of blast, and lap L is 2～10cm, is assembled by order down → obliquely.Make air compartment 10 with steel plate again, on an inclined-plane of each air compartment 10 coaming plate, offer strength at last and carry the wind interface, and feed the air that has certain pressure, finish the enforcement of whole modified coal sliding tube.
The anti-blocking structure 8 of described strength be each minute the plate junction surround air compartment, form structure jointly with two blocks of branch plates and slit thereof again with steel plate, do not contain special parts such as nozzle in this structure.
The direction of arrow is the direction of motion of coal among Fig. 2.
Claims (7)
1. the anti-blocking structure of modified coal sliding tube comprises coal sliding tube, and coal sliding tube comprises tilting section, it is characterized in that, is provided with the anti-blocking structure of at least one strength on tilting section.
2. the anti-blocking structure of modified coal sliding tube according to claim 1 is characterized in that described tilting section includes base plate, and the anti-blocking structure of described strength is arranged on this base plate.
3. the anti-blocking structure of modified coal sliding tube according to claim 1, it is characterized in that, coal sliding tube and burner hearth junction are provided with the coal spread wind interface, the anti-blocking structure of described strength is arranged on the AB section base plate of tilting section, and AB section base plate is tilting section coal breakage point to the base plate between the coal spread wind interface upper edge.
4. the anti-blocking structure of modified coal sliding tube according to claim 3, it is characterized in that, described base plate is made up of some blocks of branch plates, two blocks of adjacent branch plates are overlapped and leave the slit, these minutes, plate was along the stepped arrangement of coal falling direction, and the quantity of the anti-blocking structure of described strength equals the quantity in the some formed slits of branch plate.
5. the anti-blocking structure of modified coal sliding tube according to claim 4 is characterized in that, the adjacent overlapped length of two blocks of branch plates is 2～10cm, and the distance that leaves the slit is 0～4cm.
6. according to the anti-blocking structure of each described modified coal sliding tube of claim 1 to 4, it is characterized in that, the anti-blocking structure of described strength comprises air compartment and strength conveying wind interface, air compartment is formed by adjacent two blocks of branch plates and slit thereof and the coaming plate that two branch plate junctions fence up, and strength carries the wind interface to be located on this coaming plate.
7. the anti-blocking structure of modified coal sliding tube according to claim 6 is characterized in that described coaming plate is a steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106118013A CN102003703B (en) | 2010-12-29 | 2010-12-29 | Improved coal sliding tube anti-blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106118013A CN102003703B (en) | 2010-12-29 | 2010-12-29 | Improved coal sliding tube anti-blocking structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003703A true CN102003703A (en) | 2011-04-06 |
| CN102003703B CN102003703B (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106118013A Expired - Fee Related CN102003703B (en) | 2010-12-29 | 2010-12-29 | Improved coal sliding tube anti-blocking structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878551A (en) * | 2012-10-26 | 2013-01-16 | 哈尔滨哈锅锅炉工程技术有限公司 | Air blowing pipe on coal conveying pipe of circulating fluidized bed boiler |
| CN107062208A (en) * | 2017-05-27 | 2017-08-18 | 贵州新能源开发投资股份有限公司 | It is a kind of suitable for fluid bed Wu Du Sai Give device for coal |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2286345A (en) * | 1994-02-09 | 1995-08-16 | Mark Frederick Wickham | Feeding a fluidised bed |
| JPH1061909A (en) * | 1996-08-22 | 1998-03-06 | Mitsubishi Heavy Ind Ltd | Coal supply pipe |
| JP2004144387A (en) * | 2002-10-24 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Fluidized bed boiler |
| CN2903712Y (en) * | 2006-04-21 | 2007-05-23 | 陈玉国 | Anti-flue reversing blocking-proof type coal supplier of circulation fluid-bed boiler |
| CN201285038Y (en) * | 2008-09-27 | 2009-08-05 | 兖矿鲁南化肥厂 | Block-resistant milling coal pipe |
| CN201373421Y (en) * | 2009-03-09 | 2009-12-30 | 上海大屯能源股份有限公司 | Anti-blocking type coal spreading opening |
| CN201547764U (en) * | 2009-10-21 | 2010-08-11 | 中国铝业股份有限公司 | Circulating fluidized bed boiler coal falling pipe |
| CN201935181U (en) * | 2010-12-29 | 2011-08-17 | 兖矿鲁南化肥厂 | Improved anti-blocking structure for coal sliding pipe |
-
2010
- 2010-12-29 CN CN2010106118013A patent/CN102003703B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2286345A (en) * | 1994-02-09 | 1995-08-16 | Mark Frederick Wickham | Feeding a fluidised bed |
| JPH1061909A (en) * | 1996-08-22 | 1998-03-06 | Mitsubishi Heavy Ind Ltd | Coal supply pipe |
| JP2004144387A (en) * | 2002-10-24 | 2004-05-20 | Ishikawajima Harima Heavy Ind Co Ltd | Fluidized bed boiler |
| CN2903712Y (en) * | 2006-04-21 | 2007-05-23 | 陈玉国 | Anti-flue reversing blocking-proof type coal supplier of circulation fluid-bed boiler |
| CN201285038Y (en) * | 2008-09-27 | 2009-08-05 | 兖矿鲁南化肥厂 | Block-resistant milling coal pipe |
| CN201373421Y (en) * | 2009-03-09 | 2009-12-30 | 上海大屯能源股份有限公司 | Anti-blocking type coal spreading opening |
| CN201547764U (en) * | 2009-10-21 | 2010-08-11 | 中国铝业股份有限公司 | Circulating fluidized bed boiler coal falling pipe |
| CN201935181U (en) * | 2010-12-29 | 2011-08-17 | 兖矿鲁南化肥厂 | Improved anti-blocking structure for coal sliding pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878551A (en) * | 2012-10-26 | 2013-01-16 | 哈尔滨哈锅锅炉工程技术有限公司 | Air blowing pipe on coal conveying pipe of circulating fluidized bed boiler |
| CN107062208A (en) * | 2017-05-27 | 2017-08-18 | 贵州新能源开发投资股份有限公司 | It is a kind of suitable for fluid bed Wu Du Sai Give device for coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102003703B (en) | 2012-03-21 |
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