CN203549859U - Coal-fired boiler air cooling dry type slag conveying device - Google Patents
Coal-fired boiler air cooling dry type slag conveying device Download PDFInfo
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- CN203549859U CN203549859U CN201320721773.XU CN201320721773U CN203549859U CN 203549859 U CN203549859 U CN 203549859U CN 201320721773 U CN201320721773 U CN 201320721773U CN 203549859 U CN203549859 U CN 203549859U
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Abstract
A coal-fired boiler air cooling dry type slag conveying device comprises a machine shell, a large slag squeezing device arranged above the tail portion of the machine shell, a slag hopper which is placed above the large slag squeezing device and is arranged on the machine shell, an ash material conveying belt which is placed below the large slag squeezing device and is arranged on the machine shell, a female air pipe which is placed between feeding and returning ash material conveying belts, is arranged on the machine shell and is provided with a plurality of small air openings, ash blocking plates arranged on the small air openings of the female air pipe, a slag crusher arranged below the head portion of the machine shell, an automatic flow adjusting valve arranged in a machine shell head air inlet, and a flow meter arranged at an air opening below the automatic flow adjusting valve. The coal-fired boiler air cooling dry type slag conveying device is good in cooling effect, air temperature can be raised quickly, air amount control is accurate, boiler heat efficiency is high, energy is saved, environment is protected, conveying efficiency is high, and service life is long. The coal-fired boiler air cooling dry type slag conveying device can be widely used in a coal-fired boiler slag conveying process.
Description
Technical field
The present invention relates to the defeated slag device of a kind of coal-burning boiler air-cooled dry type, can be widely used in the defeated slag process of coal-burning boiler.
Background technology
In recent years, along with rapid economic development, energy resource consumption is also along with the people's living standard improves constantly and rapid development per capita, thereby makes environmental problem further feel outstanding.Therefore, energy-saving and cost-reducing, development and application water saving, energy-saving and environmental protection new technology are the trend of our times development.At thermal power industry, adopt dry-type slag-conveying technology to substitute traditional defeated slag technology of waterpower, be the direction of current whole power industry slagging-off development.
The defeated slag system of traditional air-cooled dry type, the main and conveyer belt lime-ash upper surface heat exchange of cooling air, poor cooling performance, is only suitable for that the end slag quantity of slag is little, the operating mode of cinder thin thickness.Because of poor cooling performance, need more cooling-airs, the air themperature that enters burner hearth is low, and air capacity is large, causes moving in the heart in boiler flame, and smoke evacuation temperature is high, and boiler thermal output is low.Again because air door latus rectum is large, air quantity is large, wind speed is fast, and be arranged on slag drying machine crown portion, for defeated cinder notch region, conveying to thin grey little slag on conveyer belt produces a very large impact, part is blown back conveyer belt lower end, and part is blown afloat to descend slowly and lightly to equipment shell bottom, causes and piles up even jam, affect the operation of equipment, transfer efficiency is low.
Summary of the invention
The object of the present invention is to provide that a kind of good cooling results, wind-warm syndrome improve rapidly, control that air quantity is accurate, boiler thermal output is high, energy-conserving and environment-protective, the defeated slag device of transfer efficiency coal-burning boiler air-cooled dry type high, long service life.
In order to achieve the above object, the defeated slag device of coal-burning boiler air-cooled dry type of the present invention, comprise casing, be arranged on the large slag pressurizing unit of casing afterbody top, be positioned at large slag pressurizing unit top and be arranged on the slag bucket on casing, be positioned at large slag pressurizing unit below and be arranged on the lime-ash material conveyer belt on casing, between process and backhaul lime-ash material conveyer belt, be arranged on casing and female airduct in some little air ports is set, be arranged on the dust block board on the little air port of female airduct, be arranged on the slag crusher of casing lower head, be arranged on the automatic flow control valve in casing head air inlet, be arranged on the flowmeter on air port, automatic flow control valve below.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said female airduct, triangular in shape.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said dust block board, is inverted V-shape.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said female airduct, is not limited to triangle, in the situation that guaranteeing cooling air conveying uniform, can be also quadrangle, or other versions.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said dust block board, has the effect that is deposited in lime-ash outside female airduct of removing, and guarantees the lime-ash rotating idler above of can not piling up and wear and tear.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, its operation principle is: adopt multi-faceted, the omnidistance material type of cooling, cooling air is entered by the air inlet that is positioned at equipment head zone, by entering female airduct after automatic flow control valve and flowmeter.During work, rely on boiler negative pressure introducing surrounding air to carry out boiler bottom slag cooling, rely on flowmeter, by control and regulation valve, control air force.By traditional cooling air and the heat exchange of lime-ash upper surface, change the comprehensive heat exchange in upper, middle and lower into.Under boiler suction function, environment cools wind enters female airduct after by control valve and flowmeter, numerous little air ports are set on female airduct, by female airduct and numerous little air port thereof, controlled cooling air is introduced below conveyer belt, cooling air elder generation and the heat exchange of conveyer belt lower surface, then penetrate conveyer belt, realizes the inner heat exchange of lime-ash, finally realize upper surface heat exchange, high-temperature hot air waste heat is sent back to boiler furnace and recycles.Cooling air quantity and defeated slag heat content carry out chain control.When operating load changes, rely on flowmeter to Flux Valve Control, realize the automatic adjustment of air quantity.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, lime-ash heat exchange mode and conventional art cooling air are introduced different from device head top, but adopt below lime-ash, inner, comprehensive heat exchange above.Hot lime-ash on conveyer belt, its lower surface and conveyer belt heat conduction heat exchange, conveyer belt is cooling by cooling air; With the cooling air after conveyer belt heat exchange, through the gap of conveyer belt loading plate, carry out inner heat exchange with lime-ash; The cooling air that passes lime-ash inside can be along equipment conveyer belt upper space, and reverse flow finally enters burner hearth, now, realizes and the heat exchange of lime-ash upper surface.Because all cooling air enters below conveyer belt, distribution is large.Therefore, cooling air heat-exchange time difference everywhere, but can obtain better cooling effect.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, cooling air heat exchange situation about each region is as follows: the cooling air that equipment head zone enters, because lime-ash has obtained more cooling above, slag temperature is lower, so cooling air absorbs the heat of conveyer belt general through temperature rise after conveyer belt, long apart from heat exchange along equipment headroom adverse current again, be warming up to gradually Secondary Air temperature.The cooling air that equipment zone line enters, due to slag, to obtain part cooling, and slag temperature is moderate, and the cooling air of the equipment that enters here, through after conveyer belt, heats up larger, then after the heat exchange of adverse current moderate distance, is warming up to Secondary Air temperature.The cooling air that equipment slag inlet place enters, because slag temperature is higher, the cooling-air of the equipment that enters here, through after conveyer belt, heats up the fastest, can directly reach wind-warm syndrome requirement.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, for determining of cooling air quantity size, is by the relation of definite boiler loads such as research lime-ash characteristic, actual motion characteristic and defeated slag heat content, by chain to intake and boiler load, reaches on-line automatic adjustment.The key of air quantity control of the present invention is to be undertaken by direct control flowmeter, and throttle opening is not affected by furnace bottom negative pressure variation.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, multi-faceted by adopting, the omnidistance material type of cooling, below cooling air and hot lime-ash adopt, inner, comprehensive heat exchange above, without cooling dead angle, good cooling results, wind-warm syndrome improves rapid.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, because good cooling results needs cooling air few, intake precise control, the cooling wind-warm syndrome that enters burner hearth is high, not only reclaims end slag heat, more can improve boiler thermal output, energy-conserving and environment-protective.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, due to good cooling results, can reduce and carry and disintegrating apparatus wearing and tearing, long service life.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, by flowmeter control throttle opening, realizes the accurate control of air quantity, by chain with the defeated slag heat content of boiler load or cooling rear slag temperature, realize automatically and controlling.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, cooling air of the present invention enters along the numerous air ports of slag drying machine length direction, and wind speed is low, on the little slag of thin ash, carries impact very little, and transfer efficiency is high.
In sum, the defeated slag device of coal-burning boiler air-cooled dry type of the present invention, good cooling results, wind-warm syndrome improves rapidly, controls air quantity accurate, and boiler thermal output is high, energy-conserving and environment-protective, transfer efficiency is high, long service life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cutaway view in Fig. 1;
Fig. 3 is the B-B revolved sectional view in Fig. 1;
Fig. 4 is the I place partial enlarged view in Fig. 2;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the right view of Fig. 4.
The specific embodiment
In Fig. 1～Fig. 6, the defeated slag device of coal-burning boiler air-cooled dry type of the present invention, comprise casing 1, be arranged on the large slag pressurizing unit 2 of casing afterbody top, be positioned at large slag pressurizing unit top and be arranged on the slag bucket 3 on casing, be positioned at large slag pressurizing unit below and be arranged on the lime-ash material conveyer belt 4 on casing, between process and backhaul lime-ash material conveyer belt, be arranged on casing and female airduct 5 in some little air ports 10 is set, be arranged on the dust block board 6 on the little air port of female airduct, be arranged on the slag crusher 7 of casing lower head, be arranged on the automatic flow control valve 8 in casing head air inlet 11, be arranged on the flowmeter 9 on air port, automatic flow control valve below.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said female airduct, triangular in shape.
The defeated slag device of coal-burning boiler air-cooled dry type of the present invention, said dust block board, is inverted V-shape.
In addition, in Fig. 1, a shown in arrow is equipment head cooling air, and b shown in arrow is middle part cooling air, and c shown in arrow is equipment afterbody cooling air; Boiler furnace 12, lime-ash 13.
Claims (3)
1. the defeated slag device of coal-burning boiler air-cooled dry type, it is characterized in that, comprise casing, be arranged on the large slag pressurizing unit of casing afterbody top, be positioned at large slag pressurizing unit top and be arranged on the slag bucket on casing, be positioned at large slag pressurizing unit below and be arranged on the lime-ash material conveyer belt on casing, between process and backhaul lime-ash material conveyer belt, be arranged on casing and female airduct in some little air ports is set, be arranged on the dust block board on the little air port of female airduct, be arranged on the slag crusher of casing lower head, be arranged on the automatic flow control valve in casing head air inlet, be arranged on the flowmeter on air port, automatic flow control valve below.
2. the defeated slag device of coal-burning boiler air-cooled dry type according to claim 1, is characterized in that, said female airduct is triangular in shape.
3. the defeated slag device of coal-burning boiler air-cooled dry type according to claim 1, is characterized in that, said dust block board, is inverted v-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721773.XU CN203549859U (en) | 2013-11-16 | 2013-11-16 | Coal-fired boiler air cooling dry type slag conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320721773.XU CN203549859U (en) | 2013-11-16 | 2013-11-16 | Coal-fired boiler air cooling dry type slag conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203549859U true CN203549859U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320721773.XU Expired - Fee Related CN203549859U (en) | 2013-11-16 | 2013-11-16 | Coal-fired boiler air cooling dry type slag conveying device |
Country Status (1)
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| CN (1) | CN203549859U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574626A (en) * | 2013-11-16 | 2014-02-12 | 青岛达能环保设备股份有限公司 | Air cooling dry type slag conveying system of coal-fired boiler |
| CN105953247A (en) * | 2016-05-30 | 2016-09-21 | 大唐贵州发耳发电有限公司 | Boiler furnace slag recycling system |
-
2013
- 2013-11-16 CN CN201320721773.XU patent/CN203549859U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574626A (en) * | 2013-11-16 | 2014-02-12 | 青岛达能环保设备股份有限公司 | Air cooling dry type slag conveying system of coal-fired boiler |
| CN103574626B (en) * | 2013-11-16 | 2016-03-09 | 青岛达能环保设备股份有限公司 | The defeated slag system of coal-burning boiler air-cooled dry type |
| CN105953247A (en) * | 2016-05-30 | 2016-09-21 | 大唐贵州发耳发电有限公司 | Boiler furnace slag recycling system |
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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: 20140416 Termination date: 20161116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |