CN106152116B - A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall - Google Patents
A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall Download PDFInfo
- Publication number
- CN106152116B CN106152116B CN201610648527.4A CN201610648527A CN106152116B CN 106152116 B CN106152116 B CN 106152116B CN 201610648527 A CN201610648527 A CN 201610648527A CN 106152116 B CN106152116 B CN 106152116B
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- CN
- China
- Prior art keywords
- water
- screen tube
- bed boiler
- fluidized bed
- water screen
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
Abstract
The present invention relates to a kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling walls.The vertical distributing damper of longitudinally disposed two column on fin between water screen tube, equidistant, contour comb shape smoke ventilator is all provided on every distributing damper, and aperture end and the fin of distributing damper are set together, the comb shape hole interlaced arrangement of adjacent two distributing damper on same fin.Structure of the invention is reasonable, is easily installed and implements, and has not only been avoided that abrasion of the solid particle to water screen tube in burning in circulating fluid bed boiler room, but also can not influence boiler thermal efficiency.
Description
Technical field
The present invention relates to a kind of boiler furnace water-cooling wall, especially a kind of wear-resistance circulation fluidized bed boiler combustion chamber water cooling
Wall.
Background technique
Circulating fluidized bed boiler (CFB) technology is a high-efficiency low-pollution cleaning coal combustion technology, circulating fluidized bed boiler water
Cold wall is the important heating surface of boiler, is the important component for guaranteeing high efficiency boiler operation.It is solid in CFB Boiler Operation
Body particle is very serious to the thinned problem of the high temperature wear of the heating surfaces such as water-cooling wall, especially near cyclone inlet
Water cooling wall region, since flow velocity is larger in the region, turbulent extent is high, water screen tube the upward abrasion of boiler water square more
Seriously, abrasion pipe explosion accident seriously threatens the safe operation of circulating fluidized bed boiler.The abrasion of water-cooling wall shortens recycle stream
In the period of fluidized bed boiler continuous operation, operation and maintenance cost is increased, reduces unit utilization rate；Abrasion has become influence circulation
The maximum restraining factors of fluidized-bed combustion boiler long-term safety operation.
For the above water-cooled wall of circulating fluidized bed wear problem, existing technology takes some measures, traditional abrasionproof
Measure has castable abrasionproof, installation anti-friction protecting watt etc., but these Precautionary Measures will appear new mill in the end of abrasionproof position
Phenomenon is damaged, Chinese utility model patent application number: 201520515269.3, disclose that " a kind of circulating fluid bed boiler is anti-
Grind fin ", this device is to install distributing damper and deflector on boiler water wall fin to avoid the solid in flue gas
Abrasion of the grain to water screen tube, but it is that it reduces contact of the flue gas with water-cooling wall, Local Heat Transfer amount is reduced, to the warp of boiler
Ji benefit has a biggish negative effect, and such apparatus structure installs complex, and therefore, Chinese utility model is special
Sharp application number: " a kind of circulating fluid bed boiler abrasionproof fin " disclosed in 201520515269.3 there are above-mentioned deficiencies.
Summary of the invention
The technical problem to be solved by the present invention is to carry out substantial improvements and innovation to the prior art, a kind of structure is provided
Advantages of simple, is easily installed and implements, and has both been avoided that solid particle is to the mill of water screen tube in burning in circulating fluid bed boiler room
Damage, and the novel anti-abrasion burning in circulating fluid bed boiler room water-cooling wall of boiler thermal efficiency can not be influenced.
The present invention provides a kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling walls, between water screen tube, water screen tube
Fin, the distributing damper that is arranged on fin, the distributing damper at least two and longitudinally perpendicular setting being spaced is in fin
On, the distributing damper is equipped with smoke ventilator.
Smoke ventilator on distributing damper can allow flue gas to pass through, and the solid carried in flue gas can be blocked by shunting plate washer
Grain, comes into full contact with flue gas and water screen tube, but the solid particle in flue gas is blocked without making to water screen tube
At abrasion.
Further, the smoke ventilator is opened on the side of distributing damper and fin contact side, the smoke ventilator
Interval is arranged on distributing damper, and the smoke ventilator on two adjacent distributing dampers is interwoven.
Smoke ventilator is arranged on the side of distributing damper and fin contact side, it is ensured that flue gas and water screen tube fill
Tap touching, the smoke ventilator interval are arranged on distributing damper, the smoke ventilator on two adjacent distributing dampers
It is interwoven.First piece of shunting plate washer has blocked the solid particle in part of smoke, and another part solid particle is through cigarette
Vent hole passes through first piece of distributing damper and moves on, and the smoke ventilator of second piece of distributing damper with first piece of flue gas due to leading to
Hole is in interlaced arrangement, and therefore, remaining solid particle is stopped by second piece of distributing damper, and flue gas can be light due to inertia very little
Malleable flow direction, therefore further ensure flue gas and can be come into full contact with by two pieces of distributing dampers with water screen tube, and flue gas
In solid particle be split baffle to preventing water screen tube to be worn.
Further, the smoke ventilator is comb shape smoke ventilator.
The circulation area of comb shape smoke ventilator is larger, is more advantageous to cigarette while solid particle is blocked in guaranteeing flue gas
Gas is current.
Further, 0.5-2 of the comb shape smoke ventilator along the radius that the height of water screen tube radial direction is water screen tube
Times, the width along water screen tube axial direction is 1-5cm, is spaced 2-10cm between two adjacent comb shape smoke ventilators.
Further, the comb shape smoke ventilator is identical with the radius of water screen tube along the height of water screen tube radial direction, edge
The width of water screen tube axial direction is 2cm, is spaced 4cm between two adjacent comb shape smoke ventilators.
The size design of comb shape smoke ventilator has a significant impact to the heat exchange of flue gas and water screen tube, ensure that heat exchange
Effect and water screen tube abrasionproof effect.
Further, the distributing damper is mounted on the water-cooling wall near the cyclone inlet of circulating fluidized bed boiler
On region.
Water cooling wall region near the cyclone inlet of circulating fluidized bed boiler, due in the region flue gas flow rate compared with
Greatly, turbulent extent is high, and water screen tube is the most serious in the upward abrasion of boiler water square, and abrasion pipe explosion accident, which seriously threatens, to follow
It is best that distributing damper effect is arranged in the safe operation of circulation fluidized bed boiler on the fin in this region.
The present invention compared with the existing technology has the following advantages that and effect:
1, structurally reasonable, it installs and easy to implement.
2, flue gas can be normal through the particle in flue gas is blocked, and water screen tube is effectively guaranteed and is not worn.
3, while protecting water screen tube not frayed, the heat transfer effect of boiler is not influenced.
4, the operating cost of enterprise is reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of wear-resistance circulation fluidized bed boiler combustion chamber water wall structure schematic diagram of the present invention.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is distributing damper structural schematic diagram.
Fig. 4 is the B-B direction cross-sectional view of Fig. 2.
Mark explanation:
1- fin 2- water screen tube 3- smoke ventilator 4- distributing damper
Specific embodiment
This patent is described in detail combined with specific embodiments below:
Embodiment 1: as shown in Figure 1, the present embodiment includes fin 1 between water screen tube 2, water screen tube, is vertically arranged
In the distributing damper 4 on fin 1, the smoke ventilator 3 that is arranged on distributing damper 4.Flue gas can pass through smoke ventilator 3, flue gas
In solid particle be split plate washer 4 blocking, to reduce the wear rate of water screen tube 2.
Embodiment 2: as shown in Figure 2 and Figure 3, in the present embodiment, smoke ventilator 3 is opened in shunting plate washer 4 and contacts one with fin 1
The smoke ventilator 3 of side, two neighboring distributing damper 4 is staggered.The setting of smoke ventilator 3 contacts one with fin 1 in shunting plate washer 4
Side can guarantee that the heat exchange of flue gas and water screen tube 2 is more abundant, and the smoke ventilator 3 of two neighboring distributing damper 4 is staggered
It can guarantee that the solid particle across previous distributing damper 4 is stopped completely by the latter distributing damper 4.Smoke ventilator 3 can be with
For different shapes, in order to increase circulation area, comb shape through-hole preferably shown in Fig. 3.
Embodiment 3: in the present embodiment, comb shape smoke ventilator 3 is along half that the radial height of water screen tube 2 is water screen tube 2
0.5-2 times of diameter, the width axial along water screen tube 2 are 1-5cm, are spaced 2- between two adjacent comb shape smoke ventilators 3
10cm, it is preferred that comb shape smoke ventilator 3 is identical with the radius of water screen tube 2 along the radial height of water screen tube 2, along water-cooling wall
The axial width of pipe 2 is 2cm, is spaced 4cm between two adjacent comb shape smoke ventilators 3.
Embodiment 4: in the present embodiment, distributing damper 4 is mounted near the cyclone inlet of circulating fluidized bed boiler
Water cooling wall region on.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is wrapped
It includes in the scope of protection of the patent of the present invention.Those skilled in the art can be to described specific implementation
Example is done various modifications or additions or is substituted in a similar manner, and without departing from structure of the invention or surmounts this
Range as defined in the claims, is within the scope of protection of the invention.
Claims (5)
1. a kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall characterized by comprising
Fin between water screen tube, water screen tube, the distributing damper being arranged on fin, the distributing damper at least two is simultaneously
On fin, the distributing damper is equipped with smoke ventilator for the longitudinally perpendicular setting at interval, and the smoke ventilator is opened in shunting gear
On the side of plate and fin contact side, the smoke ventilator interval is arranged on distributing damper, adjacent two shuntings gear
Smoke ventilator on plate is interwoven.
2. wear-resistance circulation fluidized bed boiler combustion chamber according to claim 1 water-cooling wall, which is characterized in that the flue gas is logical
Hole is comb shape smoke ventilator.
3. wear-resistance circulation fluidized bed boiler combustion chamber according to claim 2 water-cooling wall, which is characterized in that the comb shape cigarette
For vent hole along 0.5-2 times of the radius that the height of water screen tube radial direction is water screen tube, the width along water screen tube axial direction is 1-
5cm is spaced 2-10cm between two adjacent comb shape smoke ventilators.
4. wear-resistance circulation fluidized bed boiler combustion chamber according to claim 3 water-cooling wall, which is characterized in that the comb shape cigarette
Vent hole is identical with the radius of water screen tube along the height of water screen tube radial direction, and the width along water screen tube axial direction is 2cm, adjacent
Two comb shape smoke ventilators between be spaced 4cm.
5. wear-resistance circulation fluidized bed boiler combustion chamber according to claim 1-4 water-cooling wall, which is characterized in that institute
It states in the water cooling wall region that distributing damper is mounted near the cyclone inlet of circulating fluidized bed boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648527.4A CN106152116B (en) | 2016-08-05 | 2016-08-05 | A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610648527.4A CN106152116B (en) | 2016-08-05 | 2016-08-05 | A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106152116A CN106152116A (en) | 2016-11-23 |
| CN106152116B true CN106152116B (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610648527.4A Active CN106152116B (en) | 2016-08-05 | 2016-08-05 | A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall |
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| CN (1) | CN106152116B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152116B (en) * | 2016-08-05 | 2019-11-22 | 华电电力科学研究院 | A kind of wear-resistance circulation fluidized bed boiler combustion chamber water-cooling wall |
| CN108730948A (en) * | 2018-09-12 | 2018-11-02 | 哈尔滨理工大学 | A kind of biomass boiler water-cooling wall damage-proof device |
| CN111023140A (en) * | 2019-12-13 | 2020-04-17 | 北京华电德高科技有限责任公司 | Laser cladding high-temperature-resistant anti-abrasion structure for special-shaped water wall tube bank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587804A (en) * | 2004-08-27 | 2005-03-02 | 清华大学 | Fluidized bed boiler combustion room with anti-abration structure |
| KR20050055265A (en) * | 2003-12-06 | 2005-06-13 | 현대중공업 주식회사 | Water-cooled walls in a fluidized bed reactor |
| CN201110541Y (en) * | 2007-10-12 | 2008-09-03 | 张全胜 | Circulating fluid bed boiler water-cooled wall fin |
| CN205014347U (en) * | 2015-07-16 | 2016-02-03 | 华北电力大学 | Novel circulating fluidized bed boiler abrasionproof fin |
| CN106152116A (en) * | 2016-08-05 | 2016-11-23 | 华电电力科学研究院 | A kind of Novel anti-abrasion burning in circulating fluid bed boiler room water-cooling wall |
-
2016
- 2016-08-05 CN CN201610648527.4A patent/CN106152116B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050055265A (en) * | 2003-12-06 | 2005-06-13 | 현대중공업 주식회사 | Water-cooled walls in a fluidized bed reactor |
| CN1587804A (en) * | 2004-08-27 | 2005-03-02 | 清华大学 | Fluidized bed boiler combustion room with anti-abration structure |
| CN201110541Y (en) * | 2007-10-12 | 2008-09-03 | 张全胜 | Circulating fluid bed boiler water-cooled wall fin |
| CN205014347U (en) * | 2015-07-16 | 2016-02-03 | 华北电力大学 | Novel circulating fluidized bed boiler abrasionproof fin |
| CN106152116A (en) * | 2016-08-05 | 2016-11-23 | 华电电力科学研究院 | A kind of Novel anti-abrasion burning in circulating fluid bed boiler room water-cooling wall |
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| Publication number | Publication date |
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| CN106152116A (en) | 2016-11-23 |
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