CN205332186U - Multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware - Google Patents
Multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware Download PDFInfo
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- CN205332186U CN205332186U CN201620097596.6U CN201620097596U CN205332186U CN 205332186 U CN205332186 U CN 205332186U CN 201620097596 U CN201620097596 U CN 201620097596U CN 205332186 U CN205332186 U CN 205332186U
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- China
- Prior art keywords
- steel plate
- distribution plenum
- partition wall
- burner hearth
- fluidized bed
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Abstract
The utility model relates to a multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware, balanced returning charge ware include steel sheet partition wall, and steel sheet partition wall's a butt welding is solid on furnace rear screen diaphragm type wall, air distribution chamber welds admittedly in furnace rear screen diaphragm type wall lower part, and intrinsic a plurality of little hoods are evenly welded on air distribution chamber upper portion, rear side ash bucket steel sheet sets up in air distribution chamber upper portion one side, the welding has left and right sides steel sheet between furnace rear screen diaphragm type wall and the rear side ash bucket steel sheet, between steel sheet partition wall lower part and the furnace rear screen diaphragm type wall apart from W1. The beneficial effects of the utility model are that: through hugging closely self -balancing returning charge ware on rear screen diaphragm type wall, need not return material pipe, overcome the defect because of returning charge leg inflation drawing breakage water -cooling screen or returning charge ware panel, simple structure, easily whole equipment delivery or on -the -spot installation the in the manufactory saved a large amount of installation materials and cost of labor, and the leakproofness are good, does benefit to the reduction of multiple processes circulating fluidized bed boiler height, have saved the boiler room construction cost for the user.
Description
Technical field
This utility model relates to flowing device technical field, especially relates to the multipath circulating fluidized bed boiler with one-level self-balancing material returning device。
Background technology
Material returning device is one of vitals of CFBB, is the critical component of material circulating system。Utilize own structural characteristics to realize the transmission of high-temperature material negative sequence harmonic, make the high temperature separated ash from segregation apparatus, in the burner hearth that returning pressure is higher。Can these parts normal, Effec-tive Function, directly influences stable, the Effec-tive Function of CFBB。
Common material returning device can be divided into by configuration: L valve, J valve, U valve, N valve and reversal valve。
The returning charge effect of U-shaped valve is best, its good stability, and sealing is strong, and self-balance type can be best, and at present U-shaped valve mostly be individually as below separator or ash bucket, it is necessary to considerably long returning charge lower limb, the thermal expansion force problem of dipleg is difficult to solve。
Utility model content
For the weak point existed in the problems referred to above, this utility model provides the multipath circulating fluidized bed boiler with one-level self-balancing material returning device。
For achieving the above object, this utility model provides the multipath circulating fluidized bed boiler with one-level self-balancing material returning device, including:
Burner hearth, shields after the burner hearth of described burner hearth sidepiece on membrane wall and is provided with balance material returning device；
Described balance material returning device includes steel plate partition wall, and one end solid welding of described steel plate partition wall is shielded on membrane wall after described burner hearth；
Membrane wall bottom is shielded in distribution plenum solid welding after described burner hearth, and the uniform solid welding in described distribution plenum top has multiple little blast cap；
Rear side ash bucket steel plate is arranged on side, described distribution plenum top；
Shield after described burner hearth between membrane wall and described rear side ash bucket steel plate and be welded with left and right sides steel plate；
The distance W1, the distance W2 between described steel plate partition wall bottom and described rear side ash bucket steel plate bottom between membrane wall is shielded behind described steel plate partition wall bottom and described burner hearth；
1/2W2≤W1≤W2；
Shield membrane wall after described burner hearth and be provided with the width b of rectangular opening, the height h2 of described rectangular opening, described rectangular opening, distance h1 between described rectangular opening lower end and described little blast cap, the lower end distance δ of described rectangular opening lower end and described steel plate partition wall, described rear side ash bucket steel plate lower vertical section top edge to described little blast cap height h3, the spacing h0 of the lower end of described steel plate partition wall and described little blast cap 4；
H0+ δ=h1；0≤δ≤(1/4～1/2) h0；H3 >=h1；
W1*b=(1/3～1/2) h2*b。
Improving further as this utility model, the top of described rear side ash bucket steel plate is provided with 45 °～75 ° angles of inclination。
Improve further as this utility model, inside described steel plate partition wall, be cast with fire-resistant abrasion-proof castable and fire-resistant bitch。
Improving further as this utility model, described distribution plenum is formed by Plate Welding after distribution plenum upper steel plate, distribution plenum lower steel plate, distribution plenum side steel plate and distribution plenum；
Loosening airduct is arranged on after described distribution plenum lower steel plate or distribution plenum side steel plate or distribution plenum on steel plate；
On described distribution plenum upper steel plate, processing has the through hole that multiple and described little blast cap is connected。
The beneficial effects of the utility model are: by shielding on membrane wall after being close to by self-balancing material returning device, without refeed line, overcome because returning charge lower limb expands the defect of drawing crack water-cooling screen or material returning device panel, simple in construction, in easily fabricated factory, overall package delivery or in-site installation, save a large amount of mounting material and cost of labor and good airproof performance, it is beneficial to the reduction of multipath circulating fluidized bed boiler height, saves boiler room construction cost for user。
Accompanying drawing explanation
Fig. 1 is this utility model side-looking with the multipath circulating fluidized bed boiler of one-level self-balancing material returning device；
Fig. 2 is this utility model structural representation with the material returning device of the multipath circulating fluidized bed boiler of one-level self-balancing material returning device；
Fig. 3 be in Fig. 2 A-A to diagram；
Fig. 4 is this utility model structural representation with the partition wall steel plate of the multipath circulating fluidized bed boiler of one-level self-balancing material returning device；
Fig. 5 is this utility model structural representation with the little blast cap of the multipath circulating fluidized bed boiler of one-level self-balancing material returning device。
In figure: 1, steel plate partition wall；2, left and right sides steel plate；3, rear side ash bucket steel plate；4, little blast cap；5, distribution plenum；6, airduct is loosened；7, membrane wall is shielded after burner hearth；8, distribution plenum upper steel plate；9, fire-resistant abrasion-proof castable；10, fire-resistant bitch。
Detailed description of the invention
As Figure 1-5, the multipath circulating fluidized bed boiler with one-level self-balancing material returning device of this utility model embodiment, including: burner hearth, shields after the burner hearth of burner hearth sidepiece on membrane wall 7 and is provided with balance material returning device；Balance material returning device includes steel plate partition wall 1, and one end solid welding of steel plate partition wall 1 is shielded on membrane wall 7 after burner hearth。Membrane wall 7 bottom is shielded in distribution plenum 5 solid welding after burner hearth, and the uniform solid welding in distribution plenum 5 top has multiple little blast cap 4。Rear side ash bucket steel plate 3 is arranged on side, distribution plenum 5 top。Shield after burner hearth between membrane wall 7 and rear side ash bucket steel plate 3 and be welded with left and right sides steel plate 2；The distance W1, the distance W2 between steel plate partition wall 1 bottom and rear side ash bucket steel plate 3 bottom between membrane wall 7 is shielded behind steel plate partition wall 1 bottom and burner hearth；1/2W2≤W1≤W2；Shield membrane wall 7 after burner hearth and be provided with the width b of rectangular opening, the height h2 of rectangular opening, rectangular opening, distance h1 between rectangular opening lower end and little blast cap 4, the lower end distance δ of rectangular opening lower end and steel plate partition wall 1, rear side ash bucket steel plate 3 lower vertical section top edge is to little blast cap 4 height h3, the spacing h0 of the lower end of steel plate partition wall 1 and little blast cap 4。H0+ δ=h1；0≤δ≤1/4～1/2h0；H3 >=h1；W1*b=(1/3～1/2) h2*b。The top of rear side ash bucket steel plate 3 is provided with 45 °～75 ° angles of inclination。Steel plate partition wall 1 is internal is cast with fire-resistant abrasion-proof castable 9 and fire-resistant bitch 10。
Distribution plenum 5 is formed by Plate Welding after distribution plenum upper steel plate 8, distribution plenum lower steel plate, distribution plenum side steel plate and distribution plenum, loosening airduct 6 and be arranged on after distribution plenum lower steel plate or distribution plenum side steel plate or distribution plenum on steel plate, on distribution plenum upper steel plate 8, processing has the through hole that multiple and little blast cap 4 is connected。
Wherein screen membrane wall after ash bucket steel plate 3 or secondary furnace on rear side of part left and right sides steel plate 2 and part, shield membrane wall 7 after burner hearth, distribution plenum 5 composition seals cavity, distribution plenum 5 is welded in steel plate partition wall 1, left and right sides steel plate 2, rear side ash bucket steel plate 3 bottom, distribution plenum upper steel plate 8 is provided with some little blast caps 4, steel plate partition wall 1 is 90 ° and is arranged at inside cavity, it is welded with heat-resisting bitch 10,1 this structure of steel plate partition wall is divided into the material channel being connected bottom former and later two, forms U-shaped material returning device。W1 is the distance that steel plate partition wall 1 shields membrane wall 7 after burner hearth, W2 is the distance that steel plate partition wall 1 shields membrane wall after rear side ash bucket steel plate 3 or secondary furnace, h1 shields after burner hearth under membrane wall 7 perforate along the distance to little blast cap 4, h2 is the height shielding the upper and lower edge of membrane wall 7 perforate after burner hearth, h0 is the steel plate partition wall 1 distance to little blast cap 4, h3 shields the membrane wall vertical section top edge height to little blast cap 4, wherein W1≤W2 after rear side ash bucket steel plate 3 or secondary furnace；1/2W2≤W1；Flow area W1*b=(1/3～1/2) h2*b (flow area that h2*b outlet is corresponding, b is the width of material channel) corresponding for W1；H0+ δ=h1；0≤δ≤(1/4～1/2) h0；The inclination angle shielding water-cooling wall on rear side of h3 >=h1 after ash bucket steel plate 3 or secondary furnace is α, and its angular dimension is 45 °～75 °。
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations。All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。
Claims (4)
1. with the multipath circulating fluidized bed boiler of one-level self-balancing material returning device, it is characterised in that including:
Burner hearth, shields after the burner hearth of described burner hearth sidepiece on membrane wall (7) and is provided with balance material returning device；
Described balance material returning device includes steel plate partition wall (1), and one end solid welding of described steel plate partition wall (1) is shielded on membrane wall (7) after described burner hearth；
Membrane wall (7) bottom is shielded in distribution plenum (5) solid welding after described burner hearth, and the uniform solid welding in described distribution plenum (5) top has multiple little blast cap (4)；
Rear side ash bucket steel plate (3) is arranged on described distribution plenum (5) side, top；
Shield after described burner hearth between membrane wall (7) and described rear side ash bucket steel plate (3) and be welded with left and right sides steel plate (2)；
The distance W1, the distance W2 between described steel plate partition wall (1) bottom and described rear side ash bucket steel plate (3) bottom between membrane wall (7) is shielded behind described steel plate partition wall (1) bottom and described burner hearth；
1/2W2≤W1≤W2；
Shield membrane wall (7) after described burner hearth and be provided with the width b of rectangular opening, the height h2 of described rectangular opening, described rectangular opening, distance h1 between described rectangular opening lower end and described little blast cap (4), the lower end distance δ of described rectangular opening lower end and described steel plate partition wall (1), described rear side ash bucket steel plate (3) lower vertical section top edge is to described little blast cap (4) height h3, the spacing h0 of the lower end of described steel plate partition wall (1) and described little blast cap (4)；
H0+ δ=h1；0≤δ≤(1/4～1/2) h0；H3 >=h1；
W1*b=(1/3～1/2) h2*b。
2. the multipath circulating fluidized bed boiler with one-level self-balancing material returning device according to claim 1, it is characterised in that: the top of described rear side ash bucket steel plate (3) is provided with 45 °～75 ° angles of inclination。
3. the multipath circulating fluidized bed boiler with one-level self-balancing material returning device according to claim 1, it is characterised in that: described steel plate partition wall (1) is internal is cast with fire-resistant abrasion-proof castable (9) and fire-resistant bitch (10)。
4. the multipath circulating fluidized bed boiler with one-level self-balancing material returning device according to claim 1, it is characterised in that: described distribution plenum (5) is formed by Plate Welding after distribution plenum upper steel plate (8), distribution plenum lower steel plate, distribution plenum side steel plate and distribution plenum；
Loosen airduct (6) and be arranged on after described distribution plenum lower steel plate or distribution plenum side steel plate or distribution plenum on steel plate；
The through hole that the upper processing of described distribution plenum upper steel plate (8) has multiple and described little blast cap (4) to be connected。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620097596.6U CN205332186U (en) | 2016-01-31 | 2016-01-31 | Multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620097596.6U CN205332186U (en) | 2016-01-31 | 2016-01-31 | Multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware |
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|---|---|
| CN205332186U true CN205332186U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620097596.6U Expired - Fee Related CN205332186U (en) | 2016-01-31 | 2016-01-31 | Multiple processes circulating fluidized bed boiler with one -level self -balancing returning charge ware |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570879A (en) * | 2016-01-31 | 2016-05-11 | 北京热华能源科技有限公司 | Multi-flow circulating fluidized bed boiler with first-level self-balancing refeeder |
| CN111102567A (en) * | 2019-12-24 | 2020-05-05 | 江苏绿叶锅炉有限公司 | Process for material return leg of oil shale boiler |
-
2016
- 2016-01-31 CN CN201620097596.6U patent/CN205332186U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570879A (en) * | 2016-01-31 | 2016-05-11 | 北京热华能源科技有限公司 | Multi-flow circulating fluidized bed boiler with first-level self-balancing refeeder |
| CN111102567A (en) * | 2019-12-24 | 2020-05-05 | 江苏绿叶锅炉有限公司 | Process for material return leg of oil shale boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20190131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |