CN204853526U - Tail heat utilization dust removal integral type coal fired boiler - Google Patents
Tail heat utilization dust removal integral type coal fired boiler Download PDFInfo
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- CN204853526U CN204853526U CN201520609817.9U CN201520609817U CN204853526U CN 204853526 U CN204853526 U CN 204853526U CN 201520609817 U CN201520609817 U CN 201520609817U CN 204853526 U CN204853526 U CN 204853526U
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- impeller
- tail
- boiler
- heat utilization
- dust
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Abstract
The utility model discloses a tail heat utilization dust removal integral type coal fired boiler, cyclone is connected to boiler tail gas pipe tangential, behind the cyclone dust collector the awl end through closing wind ware discharge dust, tail gas passes through the whirl tedge and connects the cone, passes the tubulation after the dispersion is even, is fought by the upper portion awl and concentrates the back and discharged by the blast pipe through the draught fan, drawing fan wheel and having the blade for the cavity wedge, the backplate be dish -shaped structure, draught fan appearance outline line gradually bursts at the seams. The utility model discloses carry out the creativeness integration with heat utilization of boiler tail and dust removal, design the hot high efficiency of whirlwind dust removal tail and utilize the ware, make the tail heat utilization and the one step of completion of removing dust, reduced equipment input and also improved work efficiency, the blade is the cavity wedge, and the backplate has strengthened stability and has effectively stopped the incident that the dust accumulation causes for the structure of dish has realized drawing the impeller strength that fan wheel went up the real -time clearance of dust and had increased the fan, and application prospect is wide.
Description
Technical field
The utility model relates to a kind of coal-burning boiler, and the concrete blower fan that guides can not the tail heat utilization dedusting integral type coal-burning boiler of laying dust.
Background technology
Boiler uses very general thermodynamic apparatus, coal-burning boiler due to technology maturation, fuel cost low, one of main preferred unit remaining heat supply, but coal-burning boiler is owing to carrying flue dust, sulfur dioxide and tail heat secretly in emission, so need operation tail gas being carried out to the aspects such as tail heat utilization, dedusting, cleaning harmful gas.
Air-introduced machine is the key equipment that coal-burning boiler realizes tail heat utilization and dedusting; draught fan for boiler is mostly centrifugal blower; air-introduced machine continuous, stable, reliably working is very crucial; the occasion used due to coal-burning boiler all contains certain dust mostly; during air-introduced machine work; air-flow by during the draught fan impeller of High Rotation Speed due to centrifugation, dust granule can depart from air-flow phase and deposit and be attached on draught fan impeller.
Because draught fan impeller rotating speed is general all higher, as long as there is micro-dust to exist in air-flow, all more dust can be accumulated after working long hours, thus change the balance of draught fan impeller rotation, if draught fan impeller does not have self purification not clear up in time to dust yet, will cumulative and progressively change draught fan impeller Static and dynamic balance, thus produce vibration.Have the dust that part hardens to be come off by vibration once run into, will balance away from the dynamic rotary of air-introduced machine immediately, then produce judder, this may cause serious personnel and device security accident.
Therefore, if a kind of coal-burning boiler draught fan impeller can be designed, Automatic clearance can be carried out and just do not worry causing dust accumulation, for keeping the reliable and stable work of air-introduced machine and stopping the meaning that security incident all has particular importance.
On the other hand, often containing a large amount of heat energy and dust in the tail gas that coal-burning boiler is discharged, if can effectively utilize and dedusting, for the efficiency improving boiler, and it is all significant to realize energy-saving and emission-reduction.
Utility model content
The technical problems to be solved in the utility model overcomes the deficiencies in the prior art exactly, provides a kind of simple and practical, the tail heat utilization dedusting integral type coal-burning boiler of dust on energy Automatic clearance draught fan impeller.
For overcoming the deficiencies in the prior art, the utility model takes following technical scheme:
A kind of tail heat utilization dedusting integral type coal-burning boiler, comprises boiler body, boiler exhaust gas pipe, boiler water blow-down pipe, the hot efficiency utilization device of cyclone dust removal tail and air-introduced machine, it is characterized in that; The hot efficiency utilization device of cyclone dust removal tail is formed by stacking by tubular heat exchanger and cyclone dust collectors, boiler exhaust gas pipe tangentially connects cyclone dust collectors, dust is discharged at the cone end by wind stopping device after rotational flow dust-removing, tail gas connects cone by eddy flow tedge, through tubulation after being uniformly dispersed, being bored after bucket is concentrated by top and discharged by blast pipe by air-introduced machine; Head-tank connecting column heat exchange of heat pipe shell side bottom, tubular heat exchanger shell side top connects boiler body through boiler feed pump; Described air-introduced machine comprises draught fan impeller and casing, and draught fan impeller comprises impeller backboard, impeller panel and blade, and blade arrangement becomes impeller Axial and radial, centrosymmetric hollow wedge, and impeller backboard is dish; Hollow wedge blade connects impeller panel and is welded to form impeller bodies with dish-shaped impeller backboard; Impeller panel is provided with air inlet, dish-shaped impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft; Casing is provided with air inlet and air outlet, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet, line radius strengthens gradually with involute circle, terminate outside shell air outlet, shell air outlet width equals involute circumference; Shell air inlet is provided with cover plate, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
Described boiler water blow-down pipe tangentially connects cyclone dust collectors, realizes the cleaning to grease in cyclone dust collectors and crock.
Described casing is fixed on support.Casing plays sealing process, air inlet air inlet obtains kinetic energy by vane rotary, and carries out power conversion in casing, and a part of kinetic energy is converted to the static energy of gas, make output gas flow have speed dynamic head like this and also have hydrostatic head, both sums are exactly blower press.
Shell air inlet can connect airduct according to need, air inlet cover plate is detachable, be bolted to connection casing, the scroll casing shape of casing is gradually opened profile and is met the needs that Fan casing is airtight, conveying gas realizes energy efficient conversion simultaneously, makes output gas flow can reach required flow and total head.
Described shell air inlet cover plate is bolted to connection casing, and can dismantle.
Coal-burning boiler is all operated in micro-vacuum state usually, so all need to configure air-introduced machine, the continous-stable work of air-introduced machine exports discharge for the pressure of tail gas, and tail heat utilization and udst separation all particular importances.
Boiler gets rid of combustion tail gas by offgas duct, high-temperature tail gas contains a large amount of heat energy, utilize the hot efficiency utilization device of cyclone dust removal tail to carry out dedusting and heat utilization, tail gas tangentially enters cyclone dust collectors through entrance, in the dedusting of cyclone dust collectors inward eddy, dust is discharged by wind stopping device at the cone end, tail gas passes back through eddy flow tedge connection cone and divides rear evenly loose, through tubulation, after concentrated by top cone bucket, attract through air-introduced machine, discharge the tail gas through dedusting and heat utilization by blast pipe.
High-temperature tail gas rotational flow dust-removing simultaneously heat exchanger shell side outer wall realizes rotational-flow high-efficient heat exchange, and the soft water that head-tank is exported heats up, and dedusting tail gas passes back through tubulation once again, carries out the heat utilization of second step tail and soft water is heated up once again; In head-tank, soft water enters tubular heat exchanger shell side bottom by Cemented filling, is connected feed pump, supplies water to boiler with tail gas heat exchange from shell side top by pipeline.
Boiler blowdown water tangentially enters cyclone dust collectors by blow-off pipe, boiler blowdown water is under boiler pressure state, the superheated water that in appropriate discharge drum, basicity is too high, after merging air-flow enters cyclone dust collectors, advantageous particularly sewer rinses grease in cyclone dust collectors and crock.
When draught fan impeller of the present utility model uses, because blade design becomes hollow wedge, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static balancing of impeller would not be affected like this, more can not accumulate dust; The technical scheme of this blade construction, the wide impeller air-introduced machine being particularly suitable for delivery air amount large adopts.
Compared with the impeller backboard of common air-introduced machine, the characteristics and advantages of dish impeller backboard is: when steel plate thickness is the same, dish backboard due to rigidity reinforced, stress dispersion, elastic buffer improve and shape stability also significantly improve, thus bearing capacity can be enhanced about more than once on common flat backboard basis.Because backboard almost carries whole fans load, understand more durable so dish made by backboard, the wheel hub of truck is because have disc structure, so bearing capacity strengthens, also more durable.
Compared with prior art, the beneficial effects of the utility model are also:
The heat utilization of boiler tail and dedusting are carried out creativeness integrated, design the hot efficiency utilization device of cyclone dust removal tail, tail heat utilization and dedusting one step are completed, reduces equipment investment and also improve operating efficiency; Risen by the mobility of tail gas rotational outside heat exchanger shell pass and the tail gas in heat exchanger tube, carry out two step high efficient heat exchangings and tail heat utilization, ultrahigh in efficiency, tail heat utilization heat is not abundant; Boiler blowdown water is for removing grease in cyclone separator, crock, especially efficiently convenient.
Blade design becomes hollow wedge, and sharf radial center is symmetrical, and the blower fan backboard making it connect and the anti-relative torsion of panel, to extrude rigidity extremely strong, can stop to use the fan blade caused to connect the fracture of backboard root for a long time.
Blade design becomes hollow wedge, and sharf radial center is symmetrical, even also can obtain higher intensity with thinner board making draught fan impeller, ensures to stablize, reliably use, can save material, be convenient to make, be also conducive to light and handyization of equipment.
Vanes on Induced Draft Fan ingehious design is become hollow wedge by the utility model, and the shape of sharf radial center symmetry, achieve the real-time cleaning of dust on blade, extend the security incident also effectively stopping dust accumulation initiation service life of equipment, have a extensive future.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of the present utility model
Fig. 2 is the planar structure schematic diagram of draught fan impeller.
Fig. 3 is the cross-sectional view of draught fan impeller.
Fig. 4 is the planar structure schematic diagram of air-introduced machine.
In figure, each label represents:
A, air-introduced machine; 1, coal-burning boiler main body; 2, boiler water blow-down pipe; 3, offgas duct; 4, the hot efficiency utilization device of cyclone dust removal tail; 5, tangential inlet; 6, tubular heat exchanger; 7, cyclone dust collectors; 8, tubulation; 9, eddy flow tedge; 10, wind stopping device; 11, boiler feed pump; 12, blast pipe; 13, head-tank; 31, Wedge blade; 32, impeller cylindrical; 33, impeller air inlet; 34, axle bed; 35, rivet; 36, axis hole; 37, dish-shaped impeller backboard; 38, impeller panel; 41, impeller; 42, shell air inlet; 43, involute circle; 44, support; 45, casing; 46, shell air inlet cover plate; 47, shell air outlet; B, shell air outlet width.
Detailed description of the invention
Now by reference to the accompanying drawings, the utility model is illustrated further.
As Fig. 1, Fig. 2, the heat utilization of tail shown in Fig. 3 and Fig. 4 dedusting integral type coal-burning boiler, comprise boiler body 1, boiler exhaust gas pipe 3, boiler water blow-down pipe 2, the hot efficiency utilization device 4 of cyclone dust removal tail and air-introduced machine A, the hot efficiency utilization device 4 of cyclone dust removal tail is formed by stacking by tubular heat exchanger 6 and cyclone dust collectors 7, boiler exhaust gas pipe 3 tangentially connects cyclone dust collectors 7, dust is discharged at the cone end by wind stopping device 10 after rotational flow dust-removing, tail gas connects cone by eddy flow tedge 9, through tubulation after being uniformly dispersed, bored after bucket is concentrated by top and discharged by blast pipe 12 by air-introduced machine A, head-tank 13 connecting column heat exchange of heat pipe 6 shell side bottom, tubular heat exchanger 6 shell side top connects boiler body 1 through boiler feed pump 11, described air-introduced machine comprises draught fan impeller 41 and casing 45, and draught fan impeller 41 comprises impeller backboard 37, impeller panel 38 and blade 31, and blade 31 is arranged to impeller Axial and radial, centrosymmetric hollow wedge, and impeller backboard 37 is dish, hollow wedge blade 31 connects impeller panel 38 and is welded to form impeller bodies with dish-shaped impeller backboard 37, impeller panel 38 is provided with air inlet 33, dish-shaped impeller backboard 37 by the fixing also connection shaft seat 34 of rivet 35, and axle bed 34 is connected by axis hole 36 and fan shaft, casing 45 is provided with air inlet 42 and air outlet 47, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet 47, line radius strengthens gradually with involute circle, terminate outside shell air outlet 47, shell air outlet width B equals involute circle 43 girths, shell air inlet 42 is provided with cover plate 46, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
Described boiler water blow-down pipe 2 tangentially connects cyclone dust collectors 7, realizes the cleaning to grease in cyclone dust collectors and crock.
Described casing 45 is fixed on support 44.Casing 45 plays sealing process, air inlet 42 air inlet is rotated by impeller 41 and obtains kinetic energy, and carries out power conversion in casing 45, and a part of kinetic energy is converted to the static energy of gas, make output gas flow have speed dynamic head like this and also have hydrostatic head, both sums are exactly blower press.
Shell air inlet 42 can connect airduct according to need, air inlet cover plate 46 is detachable, be bolted to connection casing 45, the scroll casing shape of casing 45 is gradually opened profile and is met the needs that Fan casing is airtight, conveying gas realizes energy efficient conversion simultaneously, makes output gas flow can reach required flow and total head.
Described shell air inlet cover plate 46 is bolted to connection casing 15, and can dismantle.
Coal-burning boiler is all operated in micro-vacuum state usually, so all need configuration air-introduced machine A, the continous-stable work of air-introduced machine A exports discharge for the pressure of tail gas, and tail heat utilization and udst separation all particular importances.
Boiler gets rid of combustion tail gas by offgas duct 3, high-temperature tail gas contains a large amount of heat energy, utilize the hot efficiency utilization device 4 of cyclone dust removal tail to carry out dedusting and heat utilization, tail gas tangentially enters cyclone dust collectors 7 through entrance 5, in the dedusting of cyclone dust collectors 7 inward eddy, dust is discharged by wind stopping device 10 at the cone end, tail gas pass back through eddy flow tedge 9 connect cone divide rear loose evenly, through tubulation, bore after bucket concentrates by top, attract through air-introduced machine A, discharge the tail gas through dedusting and heat utilization by blast pipe 12.
High-temperature tail gas rotational flow dust-removing simultaneously heat exchanger shell side outer wall realizes rotational-flow high-efficient heat exchange, and the soft water that head-tank 13 is exported heats up, and dedusting tail gas passes back through tubulation once again, carries out the heat utilization of second step tail and soft water is heated up once again; In head-tank 13, soft water enters tubular heat exchanger 6 shell side bottom by Cemented filling, is connected feed pump 11, supplies water to boiler with tail gas heat exchange from shell side top by pipeline.
Boiler blowdown water tangentially enters cyclone dust collectors 7 by blow-off pipe 2, boiler blowdown water is under boiler pressure state, the superheated water that in appropriate discharge drum, basicity is too high, after merging air-flow enters cyclone dust collectors 7, advantageous particularly sewer rinses grease and crock in cyclone dust collectors 7.
When draught fan impeller of the present utility model uses, because blade design becomes hollow wedge, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static balancing of impeller would not be affected like this, more can not accumulate dust; The technical scheme of this blade construction, the wide impeller air-introduced machine being particularly suitable for delivery air amount large adopts.
Compared with the impeller backboard of common air-introduced machine, the characteristics and advantages of dish impeller backboard 37 is: when steel plate thickness is the same, dish backboard due to rigidity reinforced, stress dispersion, elastic buffer improve and shape stability also significantly improve, thus bearing capacity can be enhanced about more than once on common flat backboard basis.Because backboard almost carries whole fans load, understand more durable so dish made by backboard, the wheel hub of truck is because have disc structure, so bearing capacity strengthens, also more durable.
Above-mentioned just preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.Any those of ordinary skill in the art, when not departing from technical solutions of the utility model scope, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solutions of the utility model, according to the utility model technical spirit to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solutions of the utility model protection.
Claims (4)
1. a tail heat utilization dedusting integral type coal-burning boiler, comprises boiler body, boiler exhaust gas pipe, boiler water blow-down pipe, the hot efficiency utilization device of cyclone dust removal tail and air-introduced machine, it is characterized in that; The hot efficiency utilization device of cyclone dust removal tail is formed by stacking by tubular heat exchanger and cyclone dust collectors, boiler exhaust gas pipe tangentially connects cyclone dust collectors, dust is discharged at the cone end by wind stopping device after rotational flow dust-removing, tail gas connects cone by eddy flow tedge, through tubulation after being uniformly dispersed, being bored after bucket is concentrated by top and discharged by blast pipe by air-introduced machine; Head-tank connecting column heat exchange of heat pipe shell side bottom, tubular heat exchanger shell side top connects boiler body through boiler feed pump; Described air-introduced machine comprises draught fan impeller and casing, and draught fan impeller comprises impeller backboard, impeller panel and blade, and blade arrangement becomes impeller Axial and radial, centrosymmetric hollow wedge, and impeller backboard is dish; Hollow wedge blade connects impeller panel and is welded to form impeller bodies with dish-shaped impeller backboard; Impeller panel is provided with air inlet, dish-shaped impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft; Casing is provided with air inlet and air outlet, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet, line radius strengthens gradually with involute circle, terminate outside shell air outlet, shell air outlet width equals involute circumference; Shell air inlet is provided with cover plate, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
2. tail heat utilization dedusting integral type coal-burning boiler according to claim 1, is characterized in that: described boiler water blow-down pipe tangentially connects cyclone dust collectors, realizes the cleaning to grease in cyclone dust collectors and crock.
3. tail heat utilization dedusting integral type coal-burning boiler according to claim 1 or 2, is characterized in that: described casing is fixed on support.
4. tail heat utilization dedusting integral type coal-burning boiler according to claim 1 or 2, is characterized in that: described shell air inlet cover plate is bolted to connection casing, and can dismantle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609817.9U CN204853526U (en) | 2015-08-14 | 2015-08-14 | Tail heat utilization dust removal integral type coal fired boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609817.9U CN204853526U (en) | 2015-08-14 | 2015-08-14 | Tail heat utilization dust removal integral type coal fired boiler |
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| CN204853526U true CN204853526U (en) | 2015-12-09 |
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| CN201520609817.9U Expired - Fee Related CN204853526U (en) | 2015-08-14 | 2015-08-14 | Tail heat utilization dust removal integral type coal fired boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020727A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Tail heat utilization and dust removal integrated coal fired boiler |
| CN105707199A (en) * | 2016-03-05 | 2016-06-29 | 吉首大学 | Environment-friendly preserved product fire-curing device with induced draft fan convenient to disassemble |
| CN105724551A (en) * | 2016-03-05 | 2016-07-06 | 吉首大学 | Green inertial dust catching preserved product smoking and roasting device with convenient-to-disassemble induced draft fan |
| CN110140521A (en) * | 2019-05-05 | 2019-08-20 | 沙雅钵施然智能农机有限公司 | A kind of cotton picker wind-force impurity removed system and cotton picker |
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2015
- 2015-08-14 CN CN201520609817.9U patent/CN204853526U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020727A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Tail heat utilization and dust removal integrated coal fired boiler |
| CN105020727B (en) * | 2015-08-14 | 2018-06-05 | 湖北布实非织造布有限公司 | A kind of tail heat utilization dedusting integral type coal-burning boiler |
| CN105707199A (en) * | 2016-03-05 | 2016-06-29 | 吉首大学 | Environment-friendly preserved product fire-curing device with induced draft fan convenient to disassemble |
| CN105724551A (en) * | 2016-03-05 | 2016-07-06 | 吉首大学 | Green inertial dust catching preserved product smoking and roasting device with convenient-to-disassemble induced draft fan |
| CN110140521A (en) * | 2019-05-05 | 2019-08-20 | 沙雅钵施然智能农机有限公司 | A kind of cotton picker wind-force impurity removed system and cotton picker |
| CN110140521B (en) * | 2019-05-05 | 2024-04-05 | 沙雅钵施然智能农机有限公司 | Cotton picker wind power edulcoration system and cotton picker |
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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: 20151209 Termination date: 20160814 |
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| CF01 | Termination of patent right due to non-payment of annual fee |