CN207262417U - A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve - Google Patents
A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve Download PDFInfo
- Publication number
- CN207262417U CN207262417U CN201721137587.6U CN201721137587U CN207262417U CN 207262417 U CN207262417 U CN 207262417U CN 201721137587 U CN201721137587 U CN 201721137587U CN 207262417 U CN207262417 U CN 207262417U
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- outer barrel
- inner cylinder
- feeding tube
- coal
- plate
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Abstract
It the utility model is related to the coal-feeding tube of circulating fluidized bed boiler.The purpose of this utility model, which is to provide one kind, can connect boiler body coal-feeding tube and feeder coal-feeding tube road, and the expansion sleeve of absorbable differential expansion between the two.Structure is simple and easy to implement for the utility model, good seal performance, more economical practicality, more unobstructed to coal.A kind of the utility model circulating fluidized bed boiler coal-feeding tube expansion sleeve, it is made of outer barrel and inner cylinder, the upper end outside weldings of the outer barrel have flanged plate, annulate lamella is welded in the inner surface of outer barrel, the inner cylinder is sleeved on the top in outer barrel, round steel is welded with the contact position of inner cylinder and outer barrel to be used to fix inner cylinder and outer barrel, and round steel is located at the top of ring flat-plate, filled with rubber asbestos packing for sealing round steel and ring flat-plate between round steel and ring flat-plate, blind flange is equipped with the outer surface of inner cylinder, the blind flange matches connection with flanged plate by bolt, asbestos washer is equipped between blind flange and flanged plate.
Description
Technical field
The coal-feeding tube of circulating fluidized bed boiler is the utility model is related to, specifically, the utility model is recirculating fluidized bed
The expansion sleeve of connection between boiler body coal-feeding tube and feeder coal-feeding tube road, may replace the use of conventional recycle fluid bed
Coal-feeding tube expansion joint.
Background technology
In general, circulating fluidized bed boiler uses overhung construction mostly, and boiler expands downwards.Circulating fluidized bed boiler
Lower furnace portion is arranged to coal entrance, to coal inlet as burner hearth expands downwards, swell increment is big, feeder coal-feeding tube road
Swell increment it is small in addition it is negligible think no swell increment, traditional circulating fluid bed boiler body coal-feeding tube, i.e. burner hearth inlet is given
Type metal expansion joint is respectively provided between coal pipe, and the coal-feeding tube road of feeder to absorb differential expansion.Coal has impact to type metal expansion joint
Abrasion, therefore have strict demand to the material of expansion joint；The limitation of the bellows stress number of alternations in expansion joint, expansion joint
Service life is relatively short.With the development of science and technology, user puts forward higher requirements the quality of product, it is desirable to product
Failure rate is low, and service life is long, safety and reliability；And with the development of market economy, product is while quality is improved, only
The market competitiveness can just be had by taking into account its economy.
Utility model content
The purpose of this utility model, which is to provide one kind, can connect boiler body coal-feeding tube and feeder coal-feeding tube road, and can
Absorb the expansion sleeve of differential expansion between the two.Structure is simple and easy to implement for the utility model, good seal performance, more economical practicality,
It is more unobstructed to coal.
The technical solution that the utility model is taken to achieve the above object is：
A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve, is made of outer barrel and inner cylinder, outside the upper end of the outer barrel
Portion is welded with flanged plate, welds annulate lamella in the inner surface of outer barrel, the inner cylinder is sleeved on the top in outer barrel, in inner cylinder and outer barrel
Contact position be welded with round steel and be used to fix inner cylinder and outer barrel, and round steel is located at the top of ring flat-plate, is filled out between round steel and ring flat-plate
It is used to seal round steel and ring flat-plate filled with rubber asbestos packing, blind flange, the blind flange and method is equipped with the outer surface of inner cylinder
Blue plate is matched by bolt and connected, and asbestos washer is equipped between blind flange and flanged plate.
Preferably, outer barrel described in the utility model is reducer pipe.
Compared with prior art, the utility model has the following advantages：
1st, can flexible arrangement, be not take up too many space；
2nd, material selection is more flexible and changeable, the more economical practicality on the basis of performance is ensured；
3rd, the production cycle is shorter, and maintenance is more convenient easy, and maintenance rate is lower；
4th, it is more unobstructed to coal, it is not easy to block；
5th, boiler seal is good, security higher；
6th, there is no the limitation of reversed of stress number, selection range is wider, therefore more wear-resistant, longer life expectancy.
Brief description of the drawings
Fig. 1 is the usage state diagram of the utility model；
Fig. 2 is the structure diagram of the utility model；
Fig. 3 is the utility model outer tube structure schematic diagram；
Fig. 4 is the partial enlarged view at A in Fig. 3.
Embodiment
Embodiment 1
As in Figure 2-4, a kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve, is made of outer barrel 6 and inner cylinder 7, institute
The outer barrel 6 stated is reducer pipe, and the upper end outside weldings of the outer barrel 6 have flanged plate 14, and annulate lamella is welded in the inner surface of outer barrel 6
15, the inner cylinder 7 is sleeved on the top in outer barrel 6, and round steel 8 is welded with the contact position of inner cylinder 7 and outer barrel 6 and is used to fix inner cylinder 7
With outer barrel 6, and round steel 8 is located at the top of ring flat-plate 15, is used between round steel 8 and ring flat-plate 15 filled with rubber asbestos packing 12 close
Round steel 8 and ring flat-plate 15 are sealed, blind flange 9 is equipped with the outer surface of inner cylinder 7, the blind flange 9 passes through bolt 11 with flanged plate 14
Matching connection, is equipped with asbestos washer 10 between blind flange 9 and flanged plate 14.
As shown in Figure 1, the lower end of the outer barrel 6 of the utility model coal-feeding tube expansion sleeve and boiler body coal-feeding tube when using
1 welding, the other end of inner cylinder 7 and the coal-feeding tube road 5 of feeder weld.
Claims (2)
1. a kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve, it is characterized in that be made of outer barrel (6) and inner cylinder (7), it is described
The upper end outside weldings of outer barrel (6) have flanged plate (14), in the inner surface welding annulate lamella (15) of outer barrel (6), the inner cylinder (7)
The top being sleeved in outer barrel (6), be welded with the contact position of inner cylinder (7) and outer barrel (6) round steel (8) be used for fix inner cylinder (7) and
Outer barrel (6), and round steel (8) is located at the top of ring flat-plate (15), and rubber asbestos packing is filled between round steel (8) and ring flat-plate (15)
(12) it is used to seal round steel (8) and ring flat-plate (15), blind flange (9), the blind flange (9) is equipped with the outer surface of inner cylinder (7)
Connection is matched by bolt (11) with flanged plate (14), asbestos washer (10) is equipped between blind flange (9) and flanged plate (14).
A kind of 2. circulating fluidized bed boiler coal-feeding tube expansion sleeve according to claim 1, it is characterized in that described is outer
Cylinder (6) is reducer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137587.6U CN207262417U (en) | 2017-09-06 | 2017-09-06 | A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137587.6U CN207262417U (en) | 2017-09-06 | 2017-09-06 | A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207262417U true CN207262417U (en) | 2018-04-20 |
Family
ID=61923933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721137587.6U Active CN207262417U (en) | 2017-09-06 | 2017-09-06 | A kind of circulating fluidized bed boiler coal-feeding tube expansion sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207262417U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673999A (en) * | 2020-12-25 | 2022-06-28 | 东北林业大学 | High-temperature sealing device for pulse boiler soot blower |
| CN115029161A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Gasification furnace and sealing structure |
-
2017
- 2017-09-06 CN CN201721137587.6U patent/CN207262417U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673999A (en) * | 2020-12-25 | 2022-06-28 | 东北林业大学 | High-temperature sealing device for pulse boiler soot blower |
| CN115029161A (en) * | 2022-08-10 | 2022-09-09 | 山西阳煤化工机械（集团）有限公司 | Gasification furnace and sealing structure |
| CN115029161B (en) * | 2022-08-10 | 2022-11-01 | 山西阳煤化工机械（集团）有限公司 | Gasification furnace and sealing structure |
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