CN204187659U - Row's powder bellows and ignition system for boiler - Google Patents
Row's powder bellows and ignition system for boiler Download PDFInfo
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- CN204187659U CN204187659U CN201420645252.5U CN201420645252U CN204187659U CN 204187659 U CN204187659 U CN 204187659U CN 201420645252 U CN201420645252 U CN 201420645252U CN 204187659 U CN204187659 U CN 204187659U
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- 239000000843 powder Substances 0.000 title claims abstract description 123
- 239000003245 coal Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000002817 coal dust Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 10
- 238000009826 distribution Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
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- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of row's powder bellows and ignition system for boiler, relate to Utility Boiler Technology field.Solve prior art and there is the technical problem being entered the coal powder density skewness of each pulverized coal feed pipe by row's powder bellows.These row's powder bellows comprise bellows casing and coal powder density mixes well device, the air inlet of the row's of being provided with powder bellows and the air outlet of row's powder bellows on bellows casing; Coal powder density is mixed well device and is arranged in bellows casing, coal powder density mixes well the blinds apparatus that device comprises block and/or position-adjustable, and coal powder density is mixed well device and can be exported after the coal powder density distributed uniform of the breeze airflow entered by air inlet from air outlet in the mode of water conservancy diversion.This ignition system for boiler comprises row's powder bellows that air and powder mixer and the arbitrary technical scheme of the utility model provide.The utility model is entered the distributing homogeneity of the coal powder density of each pulverized coal feed pipe by row's powder bellows for improving.
Description
Technical field
The utility model relates to Utility Boiler Technology field, particularly relates to a kind of row's powder bellows and ignition system for boiler.
Background technology
For a long time, the start and stop of thermal power generation unit boiler and low-load combustion-stabilizing, consume a large amount of fuel oil.State Planning Commission encouraged the whole society to carry out the work of replace oil with coal in 1997 in " Chinese energy " white paper; The major measure of the fuel-economizing economize on electricity that " State Council is about the notice strengthening further fuel-economizing power saving operation " (No. (2008) 23, the promulgated by the State Council) promulgated on August 1st, 2008 proposes comprises that " all thermal power plants (comprising new power plant construction) coal-burning boiler all will adopt plasma without igniting technology with less oil and Steady Burning Technique of Low Loads such as oil, small oil guns, reduction oil consumption.”
For response national policy, each power plant takes the transformation of fuel-economizing aspect one after another, cost-saving to reduce fuel consume.But the boiler controller system of middle storage formula vent pulverized coal handling system, due to the particularity of its system, power plant needs to transform pulverized coal preparation system, could realize fuel-economizing even without the target (see patent " storing up formula transporting pulverized coal with exhaust gas black furnace ignition system in one ") of oil.Having transformed rear boiler can adopt fuel-economizing or oil-free ignition technology to open stove with direct-firing pattern, but still requires further improvement and optimize, and prior art at least exists following technical problem:
1) in, storage formula vent pulverized coal handling system transform direct-firing pattern as and opens stove, the boiler startup initial stage, coal dust directly enters Powder discharging fan after mill separator, each pulverized coal feed pipe is entered by the distribution of row's powder bellows, now coal powder density is than high a lot of during the weary gas of conveying, cause each tube cell coal dust distributed pole unbalanced, maximum deviation can reach more than 300%.
2) each tube cell coal dust distribution bias directly can cause too greatly burner igniting shakiness even loss of ignition, is unfavorable for the startup of boiler;
3) the directly mode of blowing that changes into is lighted a fire, and in tube cell, coal powder density deviation is crossed the burner that conference causes having and caught fire, and some burners are missing of ignition and continue to spray coal dust in burner hearth, affect the safe operation of boiler.
Therefore, for improving the distribution situation of each tube cell coal powder density, improvement need be optimized to row's powder bellows, black furnace be lighted a fire and carries out smoothly, thus meet the demand of power plant's fuel-economizing or non-oil ignition.
Utility model content
One of them object of the present utility model proposes a kind of row's powder bellows and ignition system for boiler, solves prior art and there is the technical problem being entered the coal powder density skewness of each pulverized coal feed pipe by row's powder bellows.Many technique effects that optimal technical scheme in the many technical schemes of the utility model can produce refer to hereafter sets forth.
For achieving the above object, the utility model provides following technical scheme:
Row's powder bellows that the utility model embodiment provides, comprise bellows casing and coal powder density mixes well device, wherein:
The air inlet of the row's of being provided with powder bellows and the air outlet of row's powder bellows on described bellows casing;
Described coal powder density is mixed well device and is arranged in described bellows casing, described coal powder density mixes well the blinds apparatus that device comprises block and/or position-adjustable, and described coal powder density is mixed well device and can be exported after the coal powder density distributed uniform of the breeze airflow entered by described air inlet from described air outlet in the mode of water conservancy diversion.
In preferably or alternatively embodiment, it is leg-of-mutton support body and the wear-resistant coating being arranged on described support body surface that described block comprises cross section.
In preferably or alternatively embodiment, described support body is steel plate bending or is spliced to form, and described wear-resistant coating is wear-resistant ceramic material layer.
In preferably or alternatively embodiment, described blinds apparatus comprises the shutter be arranged in described bellows casing and the position drive unit be arranged on outside described bellows casing, and described position drive unit can drive described shutter to rotate in described bellows casing and in rotation process, change the angle between the length direction of described shutter or the air-out direction of width and described row's powder bellows.
In preferably or alternatively embodiment, described angle is 0 ° ~ 90 °.
In preferably or alternatively embodiment, described coal powder density is mixed well device and is comprised block described at least one and blinds apparatus described at least one, wherein:
Described block is fixedly connected with the inwall of described bellows casing;
The shutter of described blinds apparatus and the inwall of described bellows casing are rotatably connected.
In preferably or alternatively embodiment, described position drive unit comprises engine and worm-and-wheel gear, wherein:
Described worm-and-wheel gear is connected between the main shaft of described engine and described shutter;
The main shaft of described engine drives described shutter relative to described bellows body pivot by described worm-and-wheel gear.
In preferably or alternatively embodiment, the number of described shutter is at least two, the number of described air outlet is at least two and the arris of all described air outlets forms a right-angle side of described bellows casing, and described shutter is along spaced apart in described bellows casing on the direction of air inlet described air outlet farthest described in distance from described air inlet to described air outlet.
In preferably or alternatively embodiment, the number of described block is at least two, the arris of described air inlet forms a right-angle side of described bellows casing, the arris of described air inlet is connected by a side plate with the arris of described air outlet, described side plate forms a right-angle side of bellows casing, and described block is along spaced apart on described side plate to the direction of described air outlet from described air inlet.
The ignition system for boiler that the utility model embodiment provides, comprise row's powder bellows that air and powder mixer and the arbitrary technical scheme of the utility model provide, wherein: the air outlet of described row's powder bellows is connected with the charging aperture of described air and powder mixer by least two pulverized coal feed pipes.
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
Device is mixed well owing to being provided with coal powder density in row's powder bellows that the utility model embodiment provides, coal powder density is mixed well device and can be exported after the coal powder density distributed uniform of the breeze airflow entered by air inlet from air outlet in the mode of water conservancy diversion, so the breeze airflow in each pulverized coal feed pipe that be communicated with air outlet, that receive the breeze airflow of being discharged by the air outlet of row's powder bellows compared with prior art can be more even, so solve prior art to there is the technical problem being entered the distribution of the coal powder density of each pulverized coal feed pipe by the distribution of row's powder bellows.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
The schematic diagram of the ignition system for boiler of row powder bellows of Fig. 1 for arranging utility model embodiment and providing;
A kind of schematic diagram arranging powder bellows that Fig. 2 provides for the utility model embodiment;
The schematic diagram of the another kind row powder bellows that Fig. 3 provides for the utility model embodiment;
The schematic diagram of another row's powder bellows that Fig. 4 provides for the utility model embodiment;
The schematic diagram of another row's powder bellows that Fig. 5 provides for the utility model embodiment;
The schematic diagram of another row's powder bellows that Fig. 6 provides for the utility model embodiment;
Reference numeral: 1, boiler; 2, air preheater; 3, pressure fan; 4, feeder; 5, down drying pipe; 6, coal pulverizer; 7, wood block separator; 8, mill separator; 9, explosion proof door; 10, pulverized-coal collector; 11, flapper; 12, wood scraps separator; 13, commutator; 14, moisture absorption pipe; 15, packing auger; 16, Pulverized Coal Bin; 17, machine supplying powder; 18, air and powder mixer; 19, bellows; 20, primary air fan; 22, Powder discharging fan; 23, weary gas bellows (secondary air box); 24, burner; 25, the first powder feeding pipe; 251, the first controlled valve; 26, the second powder feeding pipe; 261, second switch valve; 27, nipple; 271, the 3rd controlled valve; 28, bellows casing; 281, air inlet; 282, air outlet; 283, block; 284, shutter; 285, right-angle side; 286, right-angle side; 287, right-angle side.
Detailed description of the invention
Content of the present utility model and the distinctive points between the utility model and prior art can be understood below with reference to accompanying drawing Fig. 1 ~ Fig. 6 and word content.Hereafter by accompanying drawing and the mode enumerating embodiment more of the present utility model, the technical solution of the utility model (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristic in the present embodiment, any technical scheme is all one or more in the technical characteristic of plurality of optional or optional technical scheme, cannot exhaustive all alternative technical characteristics of the present utility model and alternative technical scheme in order to describe succinct to need in presents, also the embodiment being not easy to each technical characteristic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means that the utility model can be provided carries out two or more technological means any of replacing or being provided by the utility model or technical characteristic carries out mutually combining and obtaining new technical scheme.Any technical characteristic in the present embodiment and any technical scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art two or more technological means any that the utility model is provided or the technical characteristic new technical scheme carrying out mutually combining and obtain.
The utility model embodiment provides a kind of coal powder density distribution row's powder bellows and ignition system for boiler more uniformly that can make to be entered by row's powder bellows each pulverized coal feed pipe.
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 6 carries out specifically to the technical scheme that the utility model provides.
As shown in Fig. 1 ~ Fig. 6, row's powder bellows that the utility model embodiment provides comprise bellows casing 28 and coal powder density mixes well device, wherein:
The air inlet 281 of the row's of being provided with powder bellows and the air outlet 282 of row's powder bellows on bellows casing 28.
Coal powder density is mixed well device and is arranged in bellows casing 28, coal powder density mixes well the blinds apparatus (preferably comprising at least one shutter 284) that device comprises block 283 and/or position-adjustable, coal powder density mix well device can with the mode of water conservancy diversion the coal powder density of the breeze airflow entered by air inlet 281 distributed (relatively) even after export from air outlet 282.
Device is mixed well owing to being provided with coal powder density in row's powder bellows that the utility model embodiment provides, coal powder density is mixed well device and can be exported after the coal powder density distributed uniform of the breeze airflow entered by air inlet 281 from air outlet 282 in the mode of water conservancy diversion, so be communicated with air outlet 282, breeze airflow in each pulverized coal feed pipe of receiving the breeze airflow of being discharged by the air outlet 282 arranging powder bellows is more even.
Block 283 can the row's of making powder bellows each pulverized coal feed pipe of air outlet 282 coal dust as far as possible evenly, reduce coal powder density deviation, be conducive to the enforcement of direct-firing sparking mode.Blinds apparatus also can the row's of making powder bellows each pulverized coal feed pipe of air outlet 282 coal dust as far as possible evenly, reduce coal powder density deviation.
As preferably or alternatively embodiment, block 283 comprises support body that cross section is triangle (can certainly be other polygons, such as quadrangle) and is arranged on the wear-resistant coating on support body surface.Said structure be convenient to processing, manufacture and block 283 wearability is good, to pulverized coal borne air flow apply resistance less.
As preferably or alternatively embodiment, support body is steel plate bending or is spliced to form, and wear-resistant coating is wear-resistant ceramic material layer.High, the with low cost suitable making material as support body of armor plate strength.Wear-resistant ceramic material layer wearability is good and aerodynamic loss that is that cause the breeze airflow of process is less.
As preferably or alternatively embodiment, blinds apparatus comprises the shutter 284 be arranged in bellows casing 28 and the position drive unit be arranged on outside bellows casing 28, and position drive unit can drive shutter 284 to rotate in bellows casing 28 and in rotation process, change the angle between the length direction of shutter 284 or the air-out direction of width and row's powder bellows.Angle is preferably 0 ° ~ 90 °.
Shutter 284 angle of regulation range is 0 ~ 90 °.Shutter 284 can coal dust distribution evenly in bellows, reduces the coal powder density deviation entering each tube cell, is conducive to the enforcement of direct-firing sparking mode.After opening stove success, in normal course of operation, shutter 284 angle furnishing 0 °, to reduce to arrange the resistance in powder bellows.
As preferably or alternatively embodiment, coal powder density is mixed well device and is comprised at least one block 283 and at least one blinds apparatus, wherein: block 283 is fixedly connected with the inwall of bellows casing 28.The shutter 284 of blinds apparatus is rotatably connected with the inwall of bellows casing 28.
When installing block 283 and one or more levels shutter 284 in row's powder bellows, block 283 and shutter 284 can play the coal dust distribution in even bellows jointly, reduce the coal dust deviation entering each tube cell, are conducive to the effect of the enforcement of direct-firing sparking mode simultaneously.
Its size to the guide effect that breeze airflow plays can be changed by rotating the mode of shutter 284, and then change the regulating effect of coal powder density of breeze airflow.
As preferably or alternatively embodiment, position drive unit comprises engine and worm-and-wheel gear, wherein: worm-and-wheel gear is connected between the main shaft of engine and shutter 284.The main shaft of engine drives shutter 284 to rotate relative to bellows casing 28 by worm-and-wheel gear.
It is high that worm-and-wheel gear has transmission efficiency, compact conformation, easy-to-mount advantage.Certainly, other transmission mechanisms also can be used to replace worm-and-wheel gear.
As preferably or alternatively embodiment, the number of shutter 284 is at least two, the number of air outlet 282 is at least two and the arris of all air outlets 282 forms a right-angle side 285 of bellows casing 28, and shutter 284 is along spaced apart in bellows casing 28 on the direction of the air outlet 282 farthest of distance air inlet 281 from air inlet 281 to air outlet 282.
The uniformity of the coal powder density of breeze airflow more effectively can be improved in multiple shutter 284 1 aspects, and on the other hand for single large shutter 284, the flexible adjustment of multiple shutters 284 pairs of breeze airflows is better.
As preferably or alternatively embodiment, the number of block 283 is at least two, the arris of air inlet 281 forms a right-angle side 286 of bellows casing 28, the arris of air inlet 281 is connected by a side plate with the arris of air outlet 282, side plate forms a right-angle side 287 of bellows casing 28, and block 283 is along spaced apart on side plate on the direction from air inlet 281 to air outlet 282.Angle between the windward side of block 283 and the right-angle side 287 at block 283 place can be 0 ~ 90 °, and the angle between the right-angle side 287 at lee face and block 283 place also can be 0 ~ 90 °.
The uniformity of the coal powder density of the breeze airflow near the right-angle side 286 at block 283 place more effectively can be improved in multiple block 283 1 aspect, on the other hand for larger-size single block 283, the aerodynamic loss caused breeze airflow is less.
The ignition system for boiler that the utility model embodiment provides, comprise row's powder bellows that air and powder mixer 18 and the arbitrary technical scheme of the utility model provide, wherein: the air outlet 282 of row's powder bellows is connected with the charging aperture of air and powder mixer 18 by least two pulverized coal feed pipes.
Ignition system for boiler is suitable for applying the utility model to improve the uniformity entering the breeze airflow of pulverized coal feed pipe and air and powder mixer 18, and then improves reliability and the security of igniting operation.When the boiler black furnace non-oil ignition system using the utility model to provide carries out igniting operation, at the ignition of the boiler initial stage, the first controlled valve 251 and the 3rd controlled valve 261 can be closed, open second switch valve 271, coal dust is made directly to enter Powder discharging fan 22 after mill separator 8, and then enter burner 24 through Powder discharging fan 22 (in preferred version coal dust also will through row's powder bellows 19) and carry out igniting operation, because above-mentioned ignition process is without the need to using fuel oil, the problem of the black furnace fuel-economizing of formula transporting pulverized coal with exhaust gas or non-oil ignition is stored up in can effectively solving thus, for power plant reaches the object of fuel-economizing, save and run and maintenance cost.Coordinate the oil-free ignition technology such as plasma igniting to be expected to accomplish without oily power plant simultaneously, remove crude system, so prior art can be solved there is the technical problem that cannot realize power plant's fuel-economizing or non-oil ignition.Application the utility model can obtain larger economy, environmental protection and social benefit.The utility model improvement cost is very low, and operation expense is cheap, and system cloud gray model is reliable.
As preferred version of the present utility model, light a fire successfully, start additional coal pulverizer and carry out powder process, now existing incendiary source in burner hearth, the weary gas produced when effectively can solve powder process, realize the limit powder process of edge point fire.After treating that powder position is set up in powder storehouse, open the first controlled valve 251 and the 3rd controlled valve 261, close second switch valve 271, now can start machine supplying powder 17 and continue igniting, and then further increase reliability and the security of igniting operation.
The utility model ignition system for boiler can also comprise boiler 1, air preheater 2, pressure fan 3, feeder 4, down drying pipe 5, coal pulverizer 6, wooden unit separation machine 7, explosion proof door 9, flapper 11, wood scraps separator 12, commutator 13 and moisture absorption pipe 14.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the utility model just discloses component values to illustrate the technical solution of the utility model, and the above-mentioned numerical value enumerated should not form restriction the utility model being created to protection domain.
If employ the word such as " first ", " second " herein to limit parts, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to parts, the implication that above-mentioned word is not special.
Simultaneously, if above-mentioned the utility model discloses or relate to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use casting technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in above-mentioned the utility model for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts that the utility model provides both can be assembled by multiple independent part, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (10)
1. arrange powder bellows, it is characterized in that, comprise bellows casing (28) and coal powder density mixes well device, wherein:
The air inlet (281) of the row's of being provided with powder bellows and the air outlet (282) of row's powder bellows on described bellows casing (28);
Described coal powder density is mixed well device and is arranged in described bellows casing (28), described coal powder density mixes well the blinds apparatus that device comprises block (283) and/or position-adjustable, and described coal powder density exports from described air outlet (282) after mixing well the coal powder density distributed uniform of the breeze airflow that device will can be entered by described air inlet (281) in the mode of water conservancy diversion.
2. row's powder bellows according to claim 1, is characterized in that, it is leg-of-mutton support body and the wear-resistant coating being arranged on described support body surface that described block (283) comprises cross section.
3. row's powder bellows according to claim 2, is characterized in that, described support body is steel plate bending or is spliced to form, and described wear-resistant coating is wear-resistant ceramic material layer.
4. row's powder bellows according to claim 1, it is characterized in that, described blinds apparatus comprises the shutter (284) that is arranged in described bellows casing (28) and is arranged on described bellows casing (28) position drive unit outward, and described position drive unit can drive described shutter (284) to rotate in described bellows casing (28) and in rotation process, change the angle between the length direction of described shutter (284) or the air-out direction of width and described row's powder bellows.
5. row's powder bellows according to claim 4, is characterized in that, described angle is 0 ° ~ 90 °.
6. row's powder bellows according to claim 4, is characterized in that, described coal powder density is mixed well device and comprised block described at least one (283) and blinds apparatus described at least one, wherein:
Described block (283) is fixedly connected with the inwall of described bellows casing (28);
The shutter (284) of described blinds apparatus and the inwall of described bellows casing (28) are rotatably connected.
7. row's powder bellows according to claim 6, is characterized in that, described position drive unit comprises engine and worm-and-wheel gear, wherein:
Described worm-and-wheel gear is connected between the main shaft of described engine and described shutter (284);
The main shaft of described engine drives described shutter (284) to rotate relative to described bellows casing (28) by described worm-and-wheel gear.
8. row's powder bellows according to claim 6, it is characterized in that, the number of described shutter (284) is at least two, the number of described air outlet (282) is at least two and the arris of all described air outlets (282) forms a right-angle side (285) of described bellows casing (28), described shutter (284) is along spaced apart in described bellows casing (28) on the direction of air inlet (281) described air outlet (282) farthest described in distance from described air inlet (281) extremely described air outlet (282).
9. row's powder bellows according to claim 6, it is characterized in that, the number of described block (283) is at least two, the arris of described air inlet (281) forms a right-angle side (286) of described bellows casing (28), the arris of described air inlet (281) is connected by a side plate with the arris of described air outlet (282), described side plate forms a right-angle side (287) of bellows casing (28), described block (283) is along spaced apart on described side plate to the direction of described air outlet (282) from described air inlet (281).
10. an ignition system for boiler, is characterized in that, comprises air and powder mixer (18) and the arbitrary described row's powder bellows of claim 1-9, wherein:
The air outlet (282) of described row's powder bellows is connected with the charging aperture of described air and powder mixer (18) by least two pulverized coal feed pipes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645252.5U CN204187659U (en) | 2014-10-31 | 2014-10-31 | Row's powder bellows and ignition system for boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420645252.5U CN204187659U (en) | 2014-10-31 | 2014-10-31 | Row's powder bellows and ignition system for boiler |
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| CN204187659U true CN204187659U (en) | 2015-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433398A (en) * | 2018-10-24 | 2019-03-08 | 大唐湘潭发电有限责任公司 | Bin storage type pulverizing system boiler residual powder booting fuel saving method |
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- 2014-10-31 CN CN201420645252.5U patent/CN204187659U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433398A (en) * | 2018-10-24 | 2019-03-08 | 大唐湘潭发电有限责任公司 | Bin storage type pulverizing system boiler residual powder booting fuel saving method |
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