CN103604131B - Suspension type economizer ash-transmission system - Google Patents
Suspension type economizer ash-transmission system Download PDFInfo
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- CN103604131B CN103604131B CN201310602230.0A CN201310602230A CN103604131B CN 103604131 B CN103604131 B CN 103604131B CN 201310602230 A CN201310602230 A CN 201310602230A CN 103604131 B CN103604131 B CN 103604131B
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- ash
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Abstract
The invention discloses a kind of suspension type economizer ash-transmission system, in order to by the fly ash carry in economizer hopper to grey storehouse or electric precipitation inlet flue duct, economizer ash-transmission system comprises transmitter group, one outlet valve, compressed air source unit and supporting transfer pipeline, transmitter group comprises the transmitter of multiple series connection, each transmitter hangs the below being formed at corresponding economizer hopper respectively, an inlet valve is also respectively arranged with between each transmitter with corresponding economizer hopper, outlet valve is arranged on the transfer pipeline of transmitter group outlet, compressed air source unit provides transmitting power for the flying dust in transfer pipeline.The present invention adopts and is suspended to transmitter below ash bucket by economizer fly ash carry to grey storehouse or electric precipitation inlet flue duct, solve that traditional economizer induction system energy consumption is large, pipeline and the problem such as valve wear is serious, easily plugging, required setting height(from bottom) are higher, make economizer ash-transmission system more economically, practical, rationally, the reliability of system cloud gray model also improves greatly.
Description
Technical field
The present invention relates to a kind of powder material pneumatic conveying system, particularly economizer flying dust air-transport system.
Background technology
Economizer is exactly the heating surface in boiler back end ductwork, boiler feedwater being heated into saturation water under drum pressure, and what absorb due to its is the flue gas comparing low temperature, reduces the exhaust gas temperature of flue gas, saves the energy, improve efficiency, so be referred to as economizer.Economizer is the important component part of boiler, if can not normally run, will cause air preheater Wear and plug, and affect the heat transfer effect of heat exchange element.Boiler economizer is all provided with ash discharging hole usually, installs induction system and seen off in time by the flying dust collected in ash bucket under ash discharging hole.Defeated grey mode commonly used by economizer Geldart-D particle, hydraulic flushing ash and machinery conveying three kinds, and the defeated ash of current domestic economizer is based on pneumatic conveying mode.
Economizer ash is the more insoluble problem of air-transport system because himself particle is thick, than the feature such as great always, and traditional economizer ash-transmission system ubiquity air consumption is large, and equipment attrition is serious, and operation maintenance amount is large, the problems such as system reliability is low.In addition, because economizer hopper three-dimensional expansion amount is comparatively large, as transmitter being arranged on economizer platform, then needing longer expansion joint (L=1.5m ~ 2m) is installed, easily cause equipment setting height(from bottom) inadequate.In most of economizer ash induction system design, all that its serial or parallel connection is delivered to grey storehouse together to electric cleaner ash, economizer ash is directly sent into electric precipitation gas approach by some power plant, grey storehouse is sent into by electric cleaner ash-transmission system with after the mixing of electric cleaner ash, also some power plant simply shields economizer ash disposal system, but unit build up put into operation after will go wrong.
In order to solve these problems that traditional economizer pneumatic ash transmitting system exists in actual motion, domestic each Geldart-D particle producer improves one after another, optimizes traditional economizer ash-transmission system, seek one more economically, practical, rational economizer air-transport system.
Summary of the invention
Native system adopts and is suspended to transmitter below ash bucket by economizer fly ash carry to grey storehouse or electric precipitation inlet flue duct, solve that traditional economizer induction system energy consumption is large, pipeline and the problem such as valve wear is serious, easily plugging, required setting height(from bottom) are higher, make economizer ash-transmission system more economically, practical, rationally, the reliability of system cloud gray model also improves greatly.
For achieving the above object, the invention provides following technical scheme:
A kind of suspension type economizer ash-transmission system, in order to by the fly ash carry in economizer hopper to grey storehouse or electric precipitation inlet flue duct, described economizer ash-transmission system comprises transmitter group, one outlet valve, compressed air source unit and supporting transfer pipeline, described transmitter group comprises the transmitter of multiple series connection, described each transmitter hangs the below being formed at corresponding economizer hopper respectively, described each transmitter be also respectively arranged with an inlet valve between corresponding economizer hopper, described outlet valve is arranged on the transfer pipeline of described transmitter group outlet, described compressed air source unit provides transmitting power for the flying dust in transfer pipeline.
Preferably, in above-mentioned suspension type economizer ash-transmission system, described each transmitter is by the below of hanger suspending in corresponding economizer hopper.
Preferably, in above-mentioned suspension type economizer ash-transmission system, described each transmitter is also provided with manual access door with between corresponding economizer hopper.
Preferably, in above-mentioned suspension type economizer ash-transmission system, described compressed air source unit comprises air accumulator, the transfer pipeline between described air accumulator and transmitter is provided with intake valve group.
Preferably, in above-mentioned suspension type economizer ash-transmission system, the transfer pipeline between described air accumulator and transmitter is also provided with aeration valve group.
Preferably, in above-mentioned suspension type economizer ash-transmission system, the transfer pipeline of described transmitter group outlet is arranged at intervals with along journey tonifying Qi point, eachly comprise a check valve and an air distributing device along journey tonifying Qi point, described air accumulator blows valve group be connected to described check valve and air distributing device by helping.
Preferably, in above-mentioned suspension type economizer ash-transmission system, described adjacent two is 2 ~ 3 meters along the spacing between journey tonifying Qi point.
Preferably, in above-mentioned suspension type economizer ash-transmission system, described transmitter is T-shaped transmitter.
Preferably, in above-mentioned suspension type economizer ash-transmission system, it is double-gate plate valve at least partly that described inlet valve, outlet valve, intake valve group, aeration valve group and helping blows valve used in valve group.
Compared with prior art, advantage of the present invention is at least:
1, system configuration is succinct
System inner rotatable part is few, and adopts double-gate plate valve as the primary valve of air-transport system; System operation mode is flexible and changeable, continuously-running, also can periodic operation.
2, low, the grey gas of system delivery pressure is than high
System adopts high density, low-pressure Condensed transportation, consumes less compressed air and can carry more material, carry grey gas higher.
3, conveying energy consumption is low
The air supply waiting material to need due to conveying is less, and discharge pressure is lower, and therefore conveying energy consumption is far below the air-transport system of other form.
4, system conveying flow velocity is low
System conveying flow velocity is lower, and initial velocity is about 2 ~ 4m/s, and end speed can be controlled in 10 ~ 12m/s.
5, pipe wear is little
Because the pipe wear of Geldart-D particle is proportional with the cube of conveying flow velocity, native system adopts high grey gas ratio and lower transporting velocity, greatly reduces the wearing and tearing of pipeline, valve etc.Elbow adopts larger radius of curvature simultaneously, and the resistance of ducting is little, weares and teares also little.
6, feed-line is few
Transmitter adopts series winding form, and conveyance conduit is reasonable, and flexible arrangement is few to site requirements.
7, system investments is few, year operation and maintenance cost low
Transmitter is suspended to below economizer hopper, and the setting height(from bottom) of requirement is lower.And due to the wearing and tearing of equipment, pipeline etc. little, repair and maintenance amount is few, and system energy consumption is low, only needs a lower expense just can ensure security of system reliability service.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the principle schematic of suspension type economizer ash-transmission system in the specific embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Shown in ginseng Fig. 1, suspension type economizer ash-transmission system is provided with the T-shaped transmitter 4 of multiple stage, and the quantity of T-shaped transmitter 4 is preferably 2 ~ 6.Each T-shaped transmitter 4 hangs the below being formed at corresponding economizer hopper A respectively by suspension bracket 3.
Each transmitter 4 charging aperture establishes a manual access door 1, high temperature resistant inlet valve 2, and high temperature resistant outlet valve 5 is equipped with in the outlet of last transmitter 4.
Air inlet, tonifying Qi before transmitter, help and blowing compressed air pipeline is equipped with respectively intake valve group 7, aeration valve group 8, helps and blow valve group 9, aeration valve group 8 is connected to the air compensation ring 6 on pipeline.Transfer pipeline starts from the outlet of last transmitter, establishes one along journey tonifying Qi point every 2 ~ 3 meters, till the grey storehouse B, eachly along journey tonifying Qi point, a check valve 11 and an air distributing device 12 is housed.
Aerodynamic force required in transfer pipeline derives from compressed air source unit, and compressed air source unit comprises air accumulator 10, and air accumulator 10 is connected to intake valve group 7, aeration valve group 8 and helps and blows valve group 9, helps to blow valve group 9 and be connected to check valve 11 and air distributing device 12.
It is double-gate plate valve at least partly that inlet valve, outlet valve, intake valve group, aeration valve group and helping blows valve used in valve group.Again, in figure shown in C be compressed air source direction.
System cloud gray model flow process is:
A., before system cloud gray model, initialization adjustment (all valves are in closed condition, and conveying source of the gas and instrument bleed pressure are higher than the pressure set) is first carried out;
B. inlet valve is opened, and material enters transmitter to level-sensing device action (or reaching the time of setting), and inlet valve cuts out, time delay 3 ~ 5 seconds, and so far fill process terminates;
C. open outlet valve, open intake valve group, aeration valve group and help and blow valve group, conveying air imports transmitter, starts to carry; When the discharge pressure of transfer pipeline drops to setting pressure (being generally 0.03MPa, on-the-spot adjustable), close intake valve group, aeration valve group and help and blow valve group, so far course of conveying terminates;
D. time delay is after 3 ~ 5 seconds, closes outlet valve, and system prepares to enter to circulate next time.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a suspension type economizer ash-transmission system, in order to by the fly ash carry in economizer hopper to grey storehouse or electric precipitation inlet flue duct, described economizer ash-transmission system comprises transmitter group, one outlet valve, compressed air source unit and supporting transfer pipeline, described transmitter group comprises the transmitter of multiple series connection, each transmitter hangs the below being formed at corresponding economizer hopper respectively, an inlet valve is also respectively arranged with between each transmitter with corresponding economizer hopper, described outlet valve is arranged on the transfer pipeline of described transmitter group outlet, described compressed air source unit provides transmitting power for the flying dust in transfer pipeline, each transmitter is by the below of hanger suspending in corresponding economizer hopper, manual access door is also provided with between each transmitter with corresponding economizer hopper, described compressed air source unit comprises air accumulator, the transfer pipeline between described air accumulator and transmitter is provided with intake valve group, transfer pipeline between described air accumulator and transmitter is also provided with aeration valve group, it is characterized in that: the transfer pipeline of described transmitter group outlet is arranged at intervals with along journey tonifying Qi point, eachly comprise a check valve and an air distributing device along journey tonifying Qi point, described air accumulator blows valve group be connected to described check valve and air distributing device by helping.
2. suspension type economizer ash-transmission system according to claim 1, is characterized in that: adjacent two is 2 ~ 3 meters along the spacing between journey tonifying Qi point.
3. suspension type economizer ash-transmission system according to claim 1, is characterized in that: described transmitter is T-shaped transmitter.
4. suspension type economizer ash-transmission system according to claim 1, is characterized in that: it is double-gate plate valve at least partly that described inlet valve, outlet valve, intake valve group, aeration valve group and helping blows valve used in valve group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310602230.0A CN103604131B (en) | 2013-11-25 | 2013-11-25 | Suspension type economizer ash-transmission system |
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| CN201310602230.0A CN103604131B (en) | 2013-11-25 | 2013-11-25 | Suspension type economizer ash-transmission system |
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| CN103604131A CN103604131A (en) | 2014-02-26 |
| CN103604131B true CN103604131B (en) | 2016-01-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528386A (en) * | 2014-12-03 | 2015-04-22 | 镇江市电站辅机厂有限公司 | Pneumatic conveying system of fly ash of dust collector |
| CN108626727A (en) * | 2018-05-09 | 2018-10-09 | 叶世雄 | A kind of medical refuse burning device |
| CN113042213B (en) * | 2021-03-09 | 2024-01-30 | 浙江菲达环保科技股份有限公司 | Cooperative control method and system for electric dust removal system and ash conveying system |
| CN113060557B (en) * | 2021-03-26 | 2023-04-14 | 大唐洛阳首阳山发电有限责任公司 | Method for improving positive pressure concentrated phase ash conveying system output and optimizing ash conveying operation |
| CN114194834A (en) * | 2021-12-23 | 2022-03-18 | 国家能源集团谏壁发电厂 | Novel non-rigid expansion joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201462868U (en) * | 2009-06-01 | 2010-05-12 | 上海锅炉厂有限公司 | Ash hopper of coal economizer |
| CN102120142A (en) * | 2010-12-22 | 2011-07-13 | 浙江天蓝环保技术有限公司 | Direct injection ash supplying device in dry powder desulfurizing agent tower |
| CN202082939U (en) * | 2011-03-31 | 2011-12-21 | 河北省电力勘测设计研究院 | Fly ash conveying mechanism of boiler economizer |
| CN203549863U (en) * | 2013-11-25 | 2014-04-16 | 镇江市电站辅机厂有限公司 | Suspended type economizer ash conveying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7798749B2 (en) * | 2008-08-14 | 2010-09-21 | United Conveyor Corporation | High-efficiency material inlet with particulate diffuser plate for use in entraining particulate solids in a prime mover fluid |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201462868U (en) * | 2009-06-01 | 2010-05-12 | 上海锅炉厂有限公司 | Ash hopper of coal economizer |
| CN102120142A (en) * | 2010-12-22 | 2011-07-13 | 浙江天蓝环保技术有限公司 | Direct injection ash supplying device in dry powder desulfurizing agent tower |
| CN202082939U (en) * | 2011-03-31 | 2011-12-21 | 河北省电力勘测设计研究院 | Fly ash conveying mechanism of boiler economizer |
| CN203549863U (en) * | 2013-11-25 | 2014-04-16 | 镇江市电站辅机厂有限公司 | Suspended type economizer ash conveying system |
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Effective date of registration: 20181224 Address after: Room 302, 301 Hanzhongmen Street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Jiangsu niupulan Energy Environment Technology Co Ltd Address before: 212200 No. 261 Yangzi Middle Road, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: Zhenjiang City Power Station Auxiliary Machinery Plant Co., Ltd. |
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Granted publication date: 20160113 Termination date: 20191125 |