CN113339827A - Device for preventing dust deposition of secondary layer air box of boiler - Google Patents
Device for preventing dust deposition of secondary layer air box of boiler Download PDFInfo
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- CN113339827A CN113339827A CN202110598512.2A CN202110598512A CN113339827A CN 113339827 A CN113339827 A CN 113339827A CN 202110598512 A CN202110598512 A CN 202110598512A CN 113339827 A CN113339827 A CN 113339827A
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- air
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- air box
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
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Abstract
The invention discloses a device for preventing dust deposition of a secondary layer air box of a boiler, which comprises an air box main body with an air inlet, a partition part and an air supply assembly, wherein the partition part is arranged in the air box main body and extends from the air inlet of the air box main body to the inside of the air box main body, and extends from the bottom of the air box main body to the upper part of the air box main body, so that a ventilation space is formed between the partition part and the bottom of the air box main body, and a plurality of dust blowing holes communicated with the ventilation space are formed in the partition part; the air supply assembly is arranged outside the air box main body and used for blowing air into the ventilation space of the air box main body. The invention discloses an anti-dust deposition device for a secondary layer air box of a boiler, which can achieve the purpose of reducing dust deposition in an air box main body under the normal operation state of the boiler.
Description
Technical Field
The invention relates to the field of boilers, in particular to an anti-dust device for a secondary layer air box of a boiler.
Background
The secondary layer wind box is an indispensable important component in the opposed combustion system of a large coal-fired power plant. During the actual operation of the boiler, a large amount of dust is often found to be deposited in the secondary air bellow, and through the multiphase flow numerical simulation research on the secondary air bellow, the influence of low wind speed is found, and the dust deposition in the secondary air bellow is mostly generated in the middle area of the air bellow. Most of fly ash particles enter a furnace cavity along with secondary air and are combusted again after entering a large air box, only a small part of fly ash particles can be deposited in the large air box, however, because the power plant boiler runs for a long time, the fly ash particles can be deposited more and more at the bottom of the air box along with the increase of time, if the accumulated ash in the air box can not be cleaned regularly, the deposited thickness of the fly ash at the bottom of the air box can reach 1-2 m, the running safety of the boiler is seriously affected, and the method comprises the steps of bearing deformation of the air box, leakage at the bottom of the air box, instant loss of fire detection signals and the like.
At present, no effective solution for the problem of cleaning the accumulated dust of the air box exists, the existing technical scheme mainly utilizes the opportunity of boiler shutdown maintenance to open the air box, the accumulated dust in the air box is cleaned manually and is transported to a designated place, and other students propose dust-deposition-preventing air box structures, such as Zhejiang university propose a dust-deposition-preventing partition plate device for the large air box, the dust-deposition-preventing partition plate device is arranged at the bottom of the large air box to eliminate a low-speed vortex area at the bottom of the large air box so as to prevent the accumulated dust, but the important influence of the whole flow field in the air box on the accumulated dust in the air box is ignored.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a device for preventing ash deposition of a secondary layer air box of a boiler, which is used for solving the problem of ash deposition of a secondary large air box in a hedging combustion system of a large coal-fired power plant, and the technical scheme is as follows:
the invention provides a device for preventing dust deposition of a secondary layer air box of a boiler, which comprises an air box main body with an air inlet, a partition part and an air supply assembly, wherein the partition part is arranged in the air box main body, extends from the air inlet of the air box main body to the inside of the air box main body, extends from the bottom of the air box main body to the upper part of the air box main body, so that a ventilation space is formed between the partition part and the bottom of the air box main body, and a plurality of dust blowing holes communicated with the partition part are formed in the partition part; the air supply assembly is arranged outside the air box main body and used for blowing air into the ventilation space of the air box main body.
Furthermore, the air supply assembly comprises an air source and an air supply pipeline, an air inlet of the air supply pipeline is communicated with the air source, and an air outlet of the air supply pipeline is communicated with the ventilation space of the air box main body.
Further, the air source is secondary air.
Furthermore, the air supply duct is provided with a first air supply outlet and a second air supply outlet, and the first air supply outlet and the second air supply outlet of the air supply duct are respectively positioned on two sides of outlet air of the air supply duct.
Further, the air supply pipeline is T-shaped.
Further, the air intake of bellows main part is including being located first air intake, the second air intake at bellows main part both ends, the baffle part includes first baffle, second baffle, first baffle certainly the first air intake of bellows main part to the inside of bellows main part extends, the second baffle certainly the second air intake of bellows main part to the inside of bellows main part extends.
Further, the first partition plate and the second partition plate are butted in the interior of the bellows main body.
Further, the first partition plate and the second partition plate are in an inverted V shape, and the sharp angle of the inverted V shape faces the upper part of the air box main body.
Further, first baffle is protruding arc with the second baffle, protruding arc to bellows main part upper portion protrusion.
Further, the first partition plate and the second partition plate are integrally formed.
The technical scheme provided by the invention has the following beneficial effects:
a. according to the device for preventing ash deposition of the secondary layer air box of the boiler, provided by the invention, the flow velocity of secondary air in the air box main body can be improved by arranging the partition plate part, the flowing dead zone of fly ash is reduced, and the fly ash is automatically swept by the air supply assembly, so that the fly ash deposition in the secondary air box is prevented;
b. the device for preventing dust deposition of the secondary layer air box of the boiler achieves the purpose of reducing dust deposition in the air box main body under the normal operation state of the boiler by arranging the partition plate part and the air supply assembly, can clean flying dust in the bottom of the air box main body at any time and prevent flying dust from depositing.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention patent, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a perspective view of an apparatus for preventing ash deposition in a secondary air box of a boiler according to an embodiment of the present invention;
FIG. 2 is a front view of an apparatus for preventing ash deposition in a secondary air box of a boiler according to an embodiment of the present invention;
FIG. 3 is a side view of an apparatus for preventing ash deposition in a secondary air box of a boiler according to an embodiment of the present invention;
FIG. 4 is a view showing the structure of a primary and secondary windbox;
FIG. 5 is a structural view of a secondary windbox in comparative example 1;
FIG. 6 is a structural view of a secondary windbox in comparative example 2.
Wherein the reference numerals include: 1-air box main body, 11-first air inlet, 12-second air inlet, 2-partition plate component, 21-ash blowing hole, 22-first partition plate, 23-second partition plate, 3-air supply pipeline, 31-first air supply outlet, 32-second air supply outlet, 4-burner and 5-ventilation space.
Detailed Description
In order to make the person skilled in the art better understand the patent scheme of the present invention, the technical scheme in the patent embodiment of the present invention will be clearly and completely described below with reference to the drawings in the patent embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, not the whole embodiment. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive step shall fall within the scope of the patent protection of the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present patent application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In one embodiment of the patent of the invention, an anti-ash-deposition secondary layer wind box device for a boiler is provided, and the concrete structure is shown in fig. 1 to 3, and the device comprises a wind box main body 1 with an air inlet, a partition plate component 2 and an air supply assembly. The partition plate component 2 is arranged in the air box main body 1 and extends from an air inlet of the air box main body 1 to the inside of the air box main body 1, and extends from the bottom of the air box main body 1 to the upper part of the air box main body 1, so that a ventilation space is formed between the partition plate component 2 and the bottom of the air box main body 1, and the partition plate component 2 is provided with a plurality of dust blowing holes 21 communicated with the ventilation space. The air supply assembly is arranged outside the air box main body 1 and used for blowing air into the ventilation space of the air box main body 1. Soot blowing air (secondary air) enters the ventilation space 5 at the bottom of the air box main body 1 through the air supply assembly and then enters the upper part of the air box main body 1 through the soot blowing holes 21 on the partition plate component 2, so that on one hand, the low-speed flow field at the bottom of the air box main body 1 can be improved to increase the flow rate, and on the other hand, fly ash deposited at the bottom of the air box main body 1 can be blown up through the ventilation space 5 and the soot blowing holes 21 of the air box main body 1 in sequence and then taken out of the air box main body 1.
The air inlet of the air box main body 1 comprises a first air inlet 11 and a second air inlet 12 which are positioned at two ends of the air box main body 1. The specific structure of the partition member 2 is as follows: the partition member 2 includes a first partition 22 and a second partition 23, the first partition 22 extends from the first air inlet 11 of the main blower housing 1 to the inside of the main blower housing 1, and the second partition 23 extends from the second air inlet 12 of the main blower housing 1 to the inside of the main blower housing 1. The ash blowing air (secondary air) can enter the bottom of the air box main body 1 through the air supply assembly and then enter the inner upper part of the air box main body 1 through the ash blowing holes 21 on the partition plate part 2, meanwhile, the first air inlet 11 and the second air inlet 12 can be ventilated, and the fly ash can be taken out of the air box main body 1 under the combined action of the air sent by the air supply assembly and the air at the two air inlets.
The first and second separators 22, 23 are butted against each other inside the bellows body 1. The first partition plate 22 and the second partition plate 23 are preferably integrally formed, so that the fly ash passing through the joint of the first partition plate 22 and the second partition plate 23 and deposited on the bottom of the air box main body 1 can be reduced.
One specific structure of the partition member 2 is as follows: the first partition plate 22 and the second partition plate 23 are inverted V-shaped, the sharp angle of the inverted V-shaped is towards the upper part of the bellows main body 1, an acute included angle is formed between the first partition plate 22 and the bottom surface of the bellows main body 1, and an acute included angle is formed between the second partition plate 23 and the bottom surface of the bellows main body 1.
Another specific structure of the partition member 2 is as follows: the first partition plate 22 and the second partition plate 23 are in a convex arc shape, and the convex arc shape protrudes towards the upper part of the wind box main body 1.
The partition plate members 2 of both structures have inclined surfaces and are raised upward in the air box main body 1, so that the flow area in the middle area of the air box main body 1 can be reduced, the secondary air speed in the middle area of the air box main body 1 can be increased, the fly ash particles can be taken out of the air box main body 1 by utilizing high air speed, and the fly ash can be prevented from being deposited at the bottom of the air box main body 1.
The specific structure of the air supply assembly is as follows: the air box comprises an air source and an air supply pipeline 3, wherein an air inlet of the air supply pipeline 3 is communicated with the air source, and an air outlet of the air supply pipeline 3 is communicated with a ventilation space 5 of the air box main body 1.
The air source is secondary air which plays a role in supporting combustion and provides sufficient oxygen for pulverized coal combustion.
One specific structure of the air supply duct 3 is as follows: the air conditioner has a first air supply outlet 31 and a second air supply outlet 32, and the first air supply outlet 31 and the second air supply outlet 32 of the air supply pipeline 3 are respectively positioned at two sides of the outlet air of the air supply pipeline 3. The supply ducts 3 are preferably T-shaped, and the secondary air is introduced into the left and right sides of the bellows main body 1 through the first supply ports 31 and the second supply ports 32, respectively, so that the fly ash deposited on the bottom of the bellows main body 1 is more thoroughly blown into the ventilation space 5 of the bellows main body 1 and is introduced into the boiler through the ash-blowing holes 21 into the upper portion of the bellows main body 1.
Another specific structure of the air supply duct 3 is as follows: the air supply pipeline 3 is a vertical pipeline and is provided with an air supply outlet and an air outlet which are communicated, and the air supply pipeline 3 is preferably communicated with the middle part of the bottom of the air box main body 1. By arranging the air supply assembly, secondary air enters the air box main body 1 through an air inlet of the air supply pipeline 3 so as to blow flying ash deposited at the bottom of the air box main body 1 and blow the flying ash into the upper part of the air box main body 1 to be brought into the boiler.
In a preferred embodiment of the present invention, referring to fig. 1 and 2, the upper and lower portions of the bellows main body 1 are provided with partition members 2, and the partition member 2 located at the upper portion of the bellows main body 1 extends from the upper portion of the bellows main body 1 toward the bottom of the bellows main body 1. Through setting up two baffle parts 2, can make bellows main part 1 constitute the formula bellows main part that gradually contracts, further reduce bellows main part 1 middle zone flow area, be equivalent to greatly increased the secondary wind speed under the unchangeable condition of amount of wind, reduced the flow rate dead zone in bellows main part 1, fly ash granule in bellows main part 1 is brought to the boiler by high-speed air current and is burnt, has greatly reduced the deposit of fly ash in bellows main part 1 bottom.
Preferably, the diaphragm members located at the upper portion of the bellows body 1 are the same shape as those at the lower portion of the bellows body, i.e., are preferably symmetrically arranged.
The partition member 2 is preferably welded to the bellows main body 1 by a steel plate, for example, both ends of the partition member 2 extending from the air inlet of the bellows main body 1 toward the inside of the bellows main body 1 are welded to both side walls of the bellows main body 1, respectively.
The original secondary air box device has no partition part and no soot blower, and is shown in figure 4.
Comparative example 1
The secondary air box structure of the dust deposition prevention boiler comprises an air box main body and a partition plate part, wherein dust blowing holes are not formed in the partition plate part, and the partition plate part is shown in figure 5.
Comparative example 2
The secondary air box structure of the dust deposition prevention boiler comprises an air box main body, wherein a plurality of dust blowing holes are formed in the bottom of the air box main body, so that dust deposition in the air box is blown under the normal working condition, and the blowing hole is shown in figure 6.
The secondary air box structure of the anti-dust-deposition boiler of the comparative example 1, the comparative example 2 and the embodiment and the original secondary air box are subjected to an anti-dust-deposition test under the same test conditions: the working condition of the secondary air box is simulated, the air speed position at the inlet of the air box main body is set to be 14m/s, the fly ash particles are set to be 80um, and the test result is shown in table 1.
From numerical simulation calculations it can be found that: compared with the original secondary air box, the air box has the advantages that the number of deposited fly ash in the main body of the air box is greatly reduced, and the deposition rates of the comparative example 1, the comparative example 2 and the embodiment are respectively reduced to 7.33%, 6.75% and 4.31% from the original 11.93%. The arrangement of the partition plate part in the comparative example 1 can effectively reduce the formation of dust in the air box, and the arrangement of the soot blowing hole in the comparative example 2 can effectively reduce the formation of dust in the air box; in the embodiment, the partition plate component and the air supply assembly are arranged at the same time, so that the flow velocity of secondary air in the air box main body is improved, the flow dead zone of fly ash is reduced by improving the internal flow field of the air box, the number of deposited fly ash in the air box main body is greatly reduced, the deposition rate is reduced to 4.31 percent, compared with the comparative example 1, the comparative example 2 and the original secondary air box, the deposition rate is lower, and the deposition of fly ash at the bottom of the air box main body is greatly reduced.
The invention provides an anti-deposition device for a secondary layer air box of a boiler, which improves the flow field quality in the air box and reduces flowing dead zones of fly ash by improving the flow velocity of secondary air in an air box main body, and achieves the purpose of preventing deposition of the secondary layer air box by an active fly ash sweeping method; the device enables the air box main body to form a tapered air box main body by arranging the partition plate part, reduces the flow area of the middle area of the air box main body, equivalently greatly increases the secondary air speed under the condition of unchanged air volume, reduces the dead area of the flow velocity in the air box main body, and brings the fly ash particles in the air box main body to a boiler for combustion by high-speed airflow, thereby greatly reducing the deposition of the fly ash at the bottom of the air box main body; the air supply assembly is arranged below the partition plate component to realize automatic blowing of the fly ash, prevent the deposition of the fly ash in the secondary air box, achieve the purpose of reducing the deposition of the dust in the air box main body under the normal operation state of the boiler, clean the fly ash in the bottom of the air box main body at any time and prevent the deposition of the fly ash.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The device for preventing dust deposition of the secondary layer air box of the boiler comprises an air box main body (1) with an air inlet, and is characterized by further comprising a partition plate part (2) and an air supply assembly, wherein the partition plate part (2) is arranged in the air box main body (1) and extends from the air inlet of the air box main body (1) to the inside of the air box main body (1), and extends from the bottom of the air box main body (1) to the upper part of the air box main body (1), so that a ventilation space (5) is formed between the partition plate part (2) and the bottom of the air box main body (1), and a plurality of dust blowing holes (21) communicated with the ventilation space (5) are formed in the partition plate part (2); the air supply assembly is arranged outside the air box main body (1) and used for blowing air into the ventilation space (5) of the air box main body (1).
2. The boiler secondary floor windbox ash deposition preventing device according to claim 1, wherein the air supply assembly comprises an air source and an air supply pipeline (3), an air inlet of the air supply pipeline (3) is communicated with the air source, and an air outlet of the air supply pipeline (3) is communicated with the ventilation space (5) of the windbox main body (1).
3. The apparatus for preventing ash deposition in a secondary windbox of a boiler according to claim 2, wherein the wind source is secondary wind.
4. A boiler secondary layer windbox ash deposition prevention apparatus according to claim 2, wherein the supply air duct (3) has a first supply air outlet (31) and a second supply air outlet (32), and the first supply air outlet (31) and the second supply air outlet (32) of the supply air duct (3) are respectively located on both sides of the outlet air of the supply air duct (3).
5. A boiler secondary floor windbox ash deposition prevention apparatus according to claim 2 or 4, characterized in that the supply air duct (3) is T-shaped.
6. The apparatus for preventing dust deposition in a secondary air box of a boiler in accordance with claim 1, wherein the air inlet of the air box main body (1) comprises a first air inlet (11) and a second air inlet (12) at both ends of the air box main body (1), the partition member (2) comprises a first partition plate (22) and a second partition plate (23), the first partition plate (22) extends from the first air inlet (11) of the air box main body (1) to the inside of the air box main body (1), and the second partition plate (23) extends from the second air inlet (12) of the air box main body (1) to the inside of the air box main body (1).
7. A boiler secondary floor windbox ash deposition prevention apparatus according to claim 6, characterized in that the first and second diaphragms (22, 23) are butted inside the windbox body (1).
8. A boiler secondary floor windbox ash deposition prevention apparatus in accordance with claim 7, wherein the first partition plate (22) and the second partition plate (23) are formed in an inverted V shape with the apex angle of the inverted V shape directed toward the upper portion of the windbox main body (1).
9. A boiler secondary floor windbox ash deposition prevention apparatus in accordance with claim 7, wherein the first partition plate (22) and the second partition plate (23) are formed in a convex arc shape, the convex arc shape being convex toward the upper portion of the windbox main body (1).
10. A boiler secondary layer windbox ash deposition prevention apparatus according to claim 6, wherein the first partition plate (22) is formed integrally with the second partition plate (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110598512.2A CN113339827A (en) | 2021-05-31 | 2021-05-31 | Device for preventing dust deposition of secondary layer air box of boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110598512.2A CN113339827A (en) | 2021-05-31 | 2021-05-31 | Device for preventing dust deposition of secondary layer air box of boiler |
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| CN202110598512.2A Pending CN113339827A (en) | 2021-05-31 | 2021-05-31 | Device for preventing dust deposition of secondary layer air box of boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060844A (en) * | 2021-11-24 | 2022-02-18 | 国能蚌埠发电有限公司 | Prevent bellows structure of secondary bellows deposition |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489291U (en) * | 2013-07-16 | 2014-03-19 | 大唐国际发电股份有限公司北京高井热电厂 | Soot blower for communicating air channel |
| CN104075334A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Method and device used for soot-blowing of secondary air compartment of opposed firing boiler |
| CN204388044U (en) * | 2014-12-05 | 2015-06-10 | 苏州西热节能环保技术有限公司 | A kind of novel secondary bellows being applicable to pulverized-coal fired boiler opposed firing system |
| CN108151054A (en) * | 2017-12-01 | 2018-06-12 | 浙江浙能技术研究院有限公司 | A kind of secondary air bellow accumulatingdust device |
| CN109084323A (en) * | 2018-08-17 | 2018-12-25 | 浙江浙能温州发电有限公司 | A kind of big bellows accumulatingdust baffle plate device |
| CN111706855A (en) * | 2020-07-20 | 2020-09-25 | 烟台龙源电力技术股份有限公司 | Opposed firing boiler and secondary bellows subassembly thereof |
-
2021
- 2021-05-31 CN CN202110598512.2A patent/CN113339827A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489291U (en) * | 2013-07-16 | 2014-03-19 | 大唐国际发电股份有限公司北京高井热电厂 | Soot blower for communicating air channel |
| CN104075334A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Method and device used for soot-blowing of secondary air compartment of opposed firing boiler |
| CN204388044U (en) * | 2014-12-05 | 2015-06-10 | 苏州西热节能环保技术有限公司 | A kind of novel secondary bellows being applicable to pulverized-coal fired boiler opposed firing system |
| CN108151054A (en) * | 2017-12-01 | 2018-06-12 | 浙江浙能技术研究院有限公司 | A kind of secondary air bellow accumulatingdust device |
| CN109084323A (en) * | 2018-08-17 | 2018-12-25 | 浙江浙能温州发电有限公司 | A kind of big bellows accumulatingdust baffle plate device |
| CN111706855A (en) * | 2020-07-20 | 2020-09-25 | 烟台龙源电力技术股份有限公司 | Opposed firing boiler and secondary bellows subassembly thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060844A (en) * | 2021-11-24 | 2022-02-18 | 国能蚌埠发电有限公司 | Prevent bellows structure of secondary bellows deposition |
| CN114060844B (en) * | 2021-11-24 | 2023-12-26 | 国能蚌埠发电有限公司 | Prevent bellows structure of overgrate air case deposition |
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Application publication date: 20210903 |