CN204987045U - Economizer strength ash removal system and anti -clogging device thereof - Google Patents
Economizer strength ash removal system and anti -clogging device thereof Download PDFInfo
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- CN204987045U CN204987045U CN201520369637.8U CN201520369637U CN204987045U CN 204987045 U CN204987045 U CN 204987045U CN 201520369637 U CN201520369637 U CN 201520369637U CN 204987045 U CN204987045 U CN 204987045U
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- screen pack
- economizer
- removal system
- emissions groove
- ash removal
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Abstract
The utility model discloses an economizer strength ash removal system and anti -clogging device thereof belongs to economizer technical field. The utility model discloses an economizer strength ash removal system, including economizer, horizontal gas pass and economizer ash bucket, still include strength dusting import pipe, strength ash handling equipment, channel -section steel, first filter screen and second filter screen, the one end of strength dusting import pipe is linked together bottom the economizer ash bucket, and the other end of strength dusting import pipe is linked together with the strength ash handling equipment. Economizer ash bucket top from the top down is two fixed emissions groove steel in proper order, and upward lay and fixed first filter screen on emissions groove steel upper portion, and the second filter screen is laid and fix on lower emissions groove steel upper portion, hole on the first filter screen is greater than the hole on the second filter screen. The utility model discloses a function of avoiding a large amount of debris directly to fall into strength dusting import pipe makes the normal operating of economizer strength ash removal system.
Description
Technical field
The utility model relates to economizer technical field, more particularly, relates to a kind of economizer pneumatic ash removal system and preventing clogging up device thereof.
Background technology
Economizer is exactly the heating surface of saturation water boiler feedwater be heated in boiler back end ductwork under drum pressure, because it absorbs the heat of low-temperature flue gas, reduces the exhaust gas temperature of flue gas, saves the energy, improve efficiency, so be referred to as economizer.Economizer pneumatic ash removal system take air as pumped (conveying) medium and power, the ash of economizer hopper is transported to the process facility of storage location by pipeline, storehouse pump or other sealing devices.
The flue gas that the boiler tail of coal-burning power plant produces carries out heat exchange through economizer and feedwater, falls into economizer hopper afterwards, economizer hopper bottom is provided with pneumatic ash removal system.After each large light maintenance of unit, in stove, often there are foreign material (particularly thin wire group etc.) to leave over, economizer hopper is fallen into after operation, and economizer ash discharge to have self particle thick, than great, temperature is high, large and the gas permeability high of viscosity, inherently be difficult to defeated ash, foreign material are in ash bucket outlet or the blocking of pneumatic ash handling inlet pipeline place, large light maintenance is caused to dredge difficulty, because this place's temperature is high in operation, a series of reason such as cannot to isolate, cause the whole economizer pneumatic ash removal system of some power plant substantially inactive, very large hidden danger is brought to the safety and economic operation of unit.
For foreign material in ash bucket outlet or the blocking of pneumatic ash handling inlet pipeline place, large light maintenance is caused to dredge the problem of difficulty, existing disclosed solution in prior art, as Chinese Patent Application No.: 2013206028783, the applying date: on September 27th, 2013, invention and created name is: the defeated grey anti-block apparatus of a kind of novel economizer hopper, this application case discloses the defeated grey anti-block apparatus of a kind of novel economizer hopper, comprise the rectangular pyramid shape protective cover that bottom is open, protective cover is positioned at inverted tapered rectangular ash bucket top, protective cover bottom is matched ash bucket top cover with ash bucket top, protective cover bottom is connected with flue.Face relative with horizontal flue in the four sides of protective cover is adjacent face and is flexibly connected with adopting between flue.This application case adopts the protective cover of rectangular pyramid shape, both the foreign material that fall can have been made to avoid falling in ash bucket along protective cover landing to grey quarrel surrounding and block ash bucket, flue gas can be made again to take dirt and to fall into ash bucket smoothly, not affect the smoothness of Dry-ash System, thus ensure dry ash-transmission system equipment dependability.
And for example Chinese Patent Application No.: 2011202505341; the applying date: on July 15th, 2011; invention and created name is: a kind of many uniform selective catalytic reduction flue gas denitration devices; this application case provides a kind of many uniform selective catalytic reduction flue gas denitration devices; it effectively stops bulky grain ash to enter into flue inside; make catalyst, relevant device normally runs; and effectively shorten denitration reactor inlet flue length, arrange difficulty little, drag losses is little, adds economy and the reliability of denitrating system.It comprises boiler, economizer, denitration reactor inlet flue, Benitration reactor, boiler connects economizer, economizer connects described Benitration reactor by denitration reactor inlet flue, the leading portion of denitration reactor inlet flue is lift structure, the inlet end portion of the leading portion of denitration reactor inlet flue is provided with bulky grain catch net, the outer rim of bulky grain catch net and the inwall compact siro spinning technology of denitration reactor inlet flue; The arranged beneath of bulky grain catch net has ash bucket.
The weak point of above-mentioned two pieces application case is: (1), protective cover or catch net are fixed on above ash bucket, when foreign material accumulation is more, and heavier-weight, the intensity of protective cover or catch net cannot ensure, easily causes protective cover or catch net to cave in; (2) protective cover of individual layer or the interception result of catch net to foreign material undesirable, easily cause a large amount of foreign material to leak in ash bucket, result in blockage.
In sum, how overcoming the problem of the large light maintenance dredging difficulty caused in the blocking of pneumatic ash handling inlet pipes because foreign material better, is the technical problem that in prior art, is needed badly solution.
Utility model content
1. the utility model technical problem that will solve
The purpose of this utility model is to overcome foreign material in existing economizer pneumatic ash removal system and easily blocks in pneumatic ash handling inlet pipes, and the problem of the large light maintenance dredging difficulty caused, provide a kind of economizer pneumatic ash removal system and preventing clogging up device thereof, achieve the function avoiding a large amount of foreign material directly to fall into pneumatic ash handling inlet tube, economizer pneumatic ash removal system is normally run.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of economizer pneumatic ash removal system of the present utility model, comprises economizer, horizontal flue and economizer hopper, also comprises pneumatic ash handling inlet tube, Fly ash pneumatic removing device, channel-section steel and screen pack, and described screen pack comprises the first screen pack and the second screen pack;
One end of described pneumatic ash handling inlet tube is connected with bottom economizer hopper, and the other end of pneumatic ash handling inlet tube is connected with Fly ash pneumatic removing device;
Two emissions groove steel are fixed at described economizer hopper top from top to bottom successively, and upper emissions groove steel top is laid and fixes the first screen pack, and lower emissions groove steel top is laid and fixes the second screen pack; Hole on first screen pack is greater than the hole on the second screen pack.
Further improve as a kind of economizer pneumatic ash removal system of the present utility model, described first screen pack is provided with breach near the side of horizontal flue, the breach of the first screen pack is connected with the first removable cover; Described second screen pack is also provided with breach near the side of horizontal flue, the breach of the second screen pack is connected with the second removable cover.
Further improve as a kind of economizer pneumatic ash removal system of the present utility model, the two emissions groove steel that described economizer hopper top is fixing, the distance on each emissions groove steel between adjacent channel-section steel is 0.75m, and described channel-section steel is 5# channel-section steel.
Further improve as a kind of economizer pneumatic ash removal system of the present utility model, the wire netting of described first screen pack to be hole be 0.04m × 0.04m, the wire netting of the second screen pack to be hole be 0.03m × 0.03m.
A kind of economizer pneumatic ash removal system preventing clogging up device of the present utility model, comprise the first screen pack, the second screen pack and channel-section steel, described channel-section steel has two rows, two emissions groove steel are fixed on economizer hopper top from top to bottom successively, upper emissions groove steel top is laid and fixes the first screen pack, and lower emissions groove steel top is laid and fixes the second screen pack; Hole on first screen pack is greater than the hole on the second screen pack.
Further improve as a kind of economizer pneumatic ash removal system preventing clogging up device of the present utility model, described first screen pack is provided with breach near the side of horizontal flue, the breach of the first screen pack is connected with the first removable cover; Described second screen pack is also provided with breach near the side of horizontal flue, the breach of the second screen pack is connected with the second removable cover.
Further improve as a kind of economizer pneumatic ash removal system preventing clogging up device of the present utility model, the two emissions groove steel that described economizer hopper top is fixing, the distance on each emissions groove steel between adjacent channel-section steel is 0.75m, and described channel-section steel is 5# channel-section steel.
Further improve as a kind of economizer pneumatic ash removal system preventing clogging up device of the present utility model, the wire netting of described first screen pack to be hole be 0.04m × 0.04m, the wire netting of the second screen pack to be hole be 0.03m × 0.03m.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) economizer pneumatic ash removal system of the present utility model and preventing clogging up device thereof, lay respectively on upper and lower two emissions groove steel tops and fix the first screen pack, the second screen pack, greatly can be promoted the bearing capacity to foreign material of the first screen pack and the second screen pack by the support of two emissions groove steel, the intensity of the first screen pack and the second screen pack obtains and greatly improves.
(2) economizer pneumatic ash removal system of the present utility model and preventing clogging up device thereof, hole on first screen pack is greater than the hole on the second screen pack, during system cloud gray model, first first screen pack filters out the relatively large foreign material of size, second filter screen filtration falls the relatively little foreign material of size, first screen pack and the second screen pack with the use of, avoid the problem that the interception result of single layer filter net to foreign material is undesirable, achieve the layered filtration to foreign material, improve the filter effect of screen pack to foreign material, under making economizer hopper, ash evenly, the adhesion clogging avoiding a large amount of foreign material directly to fall into causing in pneumatic ash handling inlet tube, economizer pneumatic ash removal system is normally run, and to the cleaning of foreign material during being convenient to large light maintenance.
(3) economizer pneumatic ash removal system of the present utility model and preventing clogging up device thereof, first screen pack, the second screen pack are respectively equipped with the first removable cover, the second removable cover, when large light maintenance, easily and timely can clear up the foreign material on the first screen pack, the second screen pack by opening the first removable cover, the second removable cover, and be convenient to inspection first screen pack, the second screen pack with or without damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of economizer pneumatic ash removal system of the present utility model and preventing clogging up device thereof;
Fig. 2 is the structural representation of the first screen pack in the utility model.
Label declaration in schematic diagram: 1, economizer; 2, horizontal flue; 3, the first screen pack; 4, the second screen pack; 5, the first removable cover; 6, the second removable cover; 7, economizer hopper; 8, pneumatic ash handling inlet tube; 9, Fly ash pneumatic removing device; 10, channel-section steel.
Detailed description of the invention
For understanding content of the present utility model further, below in conjunction with drawings and Examples, the utility model will be further described:
Embodiment 1
As depicted in figs. 1 and 2, a kind of economizer pneumatic ash removal system of the present embodiment, comprise economizer 1, horizontal flue 2, economizer hopper 7, pneumatic ash handling inlet tube 8, Fly ash pneumatic removing device 9, channel-section steel 10 and screen pack, screen pack comprises the first screen pack 3 and the second screen pack 4.One end of pneumatic ash handling inlet tube 8 is connected with bottom economizer hopper 7, and the other end of pneumatic ash handling inlet tube 8 is connected with Fly ash pneumatic removing device 9.In the present embodiment, the ash fallen in economizer hopper 7 is cleared up away by pneumatic ash handling inlet tube 8 by Fly ash pneumatic removing device 9 in time, the dust in removing flue gas.
Two emissions groove steel 10 are fixed at economizer hopper 7 top from top to bottom successively, and in this enforcement, the distance on each emissions groove steel 10 between adjacent channel-section steel 10 is 0.75m, and channel-section steel 10 is 5# channel-section steel.Upper emissions groove steel 10 top is laid and is fixed the first screen pack 3, and lower emissions groove steel 10 top is laid and fixed the second screen pack 4.Hole on first screen pack 3 is greater than the hole on the second screen pack 4, in this enforcement, and the wire netting of the first screen pack 3 to be holes be 0.04m × 0.04m, the wire netting of the second screen pack 4 to be holes be 0.03m × 0.03m.First screen pack 3 is provided with breach near the side of horizontal flue 2, and the breach of the first screen pack 3 is connected with the first removable cover 5 by hinge; Second screen pack 4 is also provided with breach near the side of horizontal flue 2, and the breach of the second screen pack 4 is connected with the second removable cover 6 by hinge.
In the present embodiment, lay respectively on upper and lower two emissions groove steel 10 tops and fix the first screen pack 3, second screen pack 4, greatly can be promoted the bearing capacity to foreign material of the first screen pack 3 and the second screen pack 4 by the support of two emissions groove steel 10, the intensity of the first screen pack 3 and the second screen pack 4 obtains and greatly improves.
Hole on first screen pack 3 is greater than the hole on the second screen pack 4, during system cloud gray model, first first screen pack 3 filters out the relatively large foreign material of size, second screen pack 4 filters out the relatively little foreign material of size, first screen pack 3 and the second screen pack 4 with the use of, avoid the problem that the interception result of single layer filter net to foreign material is undesirable, achieve the layered filtration to foreign material, improve the filter effect of screen pack to foreign material, make economizer hopper 7 times ashes even, the adhesion clogging avoiding a large amount of foreign material directly to fall into causing in pneumatic ash handling inlet tube 8, economizer pneumatic ash removal system is normally run, and to the cleaning of foreign material during being convenient to large light maintenance.
First screen pack 3, second screen pack 4 is respectively equipped with the first removable cover 5, second removable cover 6, when large light maintenance, easily and timely can clear up the foreign material on the first screen pack 3, second screen pack 4 by opening the first removable cover 5, second removable cover 6, and be convenient to inspection first screen pack 3, second screen pack 4 with or without damage.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (8)
1. an economizer pneumatic ash removal system, comprise economizer (1), horizontal flue (2) and economizer hopper (7), it is characterized in that: also comprise pneumatic ash handling inlet tube (8), Fly ash pneumatic removing device (9), channel-section steel (10) and screen pack, described screen pack comprises the first screen pack (3) and the second screen pack (4);
One end of described pneumatic ash handling inlet tube (8) is connected with economizer hopper (7) bottom, and the other end of pneumatic ash handling inlet tube (8) is connected with Fly ash pneumatic removing device (9);
Two emissions groove steel (10) are fixed at described economizer hopper (7) top from top to bottom successively, upper emissions groove steel (10) top is laid and fixes the first screen pack (3), and lower emissions groove steel (10) top is laid and fixes the second screen pack (4); Hole on first screen pack (3) is greater than the hole on the second screen pack (4).
2. a kind of economizer pneumatic ash removal system according to claim 1, it is characterized in that: described first screen pack (3) is provided with breach near the side of horizontal flue (2), the breach of the first screen pack (3) is connected with the first removable cover (5); Described second screen pack (4) is also provided with breach near the side of horizontal flue (2), the breach of the second screen pack (4) is connected with the second removable cover (6).
3. a kind of economizer pneumatic ash removal system according to claim 1, it is characterized in that: the two emissions groove steel (10) that described economizer hopper (7) top is fixing, distance between the upper adjacent channel-section steel (10) of each emissions groove steel (10) is 0.75m, and described channel-section steel (10) is 5# channel-section steel.
4. a kind of economizer pneumatic ash removal system according to claim 1, it is characterized in that: the wire netting of described first screen pack (3) to be hole be 0.04m × 0.04m, the wire netting of the second screen pack (4) to be hole be 0.03m × 0.03m.
5. an economizer pneumatic ash removal system preventing clogging up device, it is characterized in that: comprise the first screen pack (3), the second screen pack (4) and channel-section steel (10), described channel-section steel (10) has two rows, two emissions groove steel (10) are fixed on economizer hopper (7) top from top to bottom successively, upper emissions groove steel (10) top is laid and fixes the first screen pack (3), and lower emissions groove steel (10) top is laid and fixes the second screen pack (4); Hole on first screen pack (3) is greater than the hole on the second screen pack (4).
6. a kind of economizer pneumatic ash removal system preventing clogging up device according to claim 5, it is characterized in that: described first screen pack (3) is provided with breach near the side of horizontal flue (2), the breach of the first screen pack (3) is connected with the first removable cover (5); Described second screen pack (4) is also provided with breach near the side of horizontal flue (2), the breach of the second screen pack (4) is connected with the second removable cover (6).
7. a kind of economizer pneumatic ash removal system preventing clogging up device according to claim 5, it is characterized in that: the two emissions groove steel (10) that described economizer hopper (7) top is fixing, distance between the upper adjacent channel-section steel (10) of each emissions groove steel (10) is 0.75m, and described channel-section steel (10) is 5# channel-section steel.
8. a kind of economizer pneumatic ash removal system preventing clogging up device according to claim 5, it is characterized in that: the wire netting of described first screen pack (3) to be hole be 0.04m × 0.04m, the wire netting of the second screen pack (4) to be hole be 0.03m × 0.03m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369637.8U CN204987045U (en) | 2015-05-29 | 2015-05-29 | Economizer strength ash removal system and anti -clogging device thereof |
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| CN201520369637.8U CN204987045U (en) | 2015-05-29 | 2015-05-29 | Economizer strength ash removal system and anti -clogging device thereof |
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| CN204987045U true CN204987045U (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923402A (en) * | 2016-06-12 | 2016-09-07 | 大唐贵州发耳发电有限公司 | Economizer sundry filtering system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923402A (en) * | 2016-06-12 | 2016-09-07 | 大唐贵州发耳发电有限公司 | Economizer sundry filtering system |
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