CN204187657U - Point powder dust feeder and the ignition system for boiler of ignition system - Google Patents
Point powder dust feeder and the ignition system for boiler of ignition system Download PDFInfo
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- CN204187657U CN204187657U CN201420645170.0U CN201420645170U CN204187657U CN 204187657 U CN204187657 U CN 204187657U CN 201420645170 U CN201420645170 U CN 201420645170U CN 204187657 U CN204187657 U CN 204187657U
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- ignition system
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- pulverized
- feeding pipe
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- 239000000843 powder Substances 0.000 title claims abstract description 164
- 239000000428 dust Substances 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 97
- 238000007599 discharging Methods 0.000 claims abstract description 32
- 210000002445 nipple Anatomy 0.000 claims abstract description 27
- 230000008676 import Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 17
- 239000002817 coal dust Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a kind of point powder dust feeder and ignition system for boiler of ignition system, relate to technical field of engineering machinery.Solve prior art and there is the technical problem that cannot realize power plant's fuel-economizing or non-oil ignition.A point powder dust feeder for this ignition system comprises mill separator, pulverized-coal collector, Powder discharging fan, the first powder feeding pipe, the second powder feeding pipe and nipple, and mill separator to be connected with the import of pulverized-coal collector by the first powder feeding pipe and the import of the first powder feeding pipe or pulverized-coal collector is provided with the first controlled valve; The weary gas outlet of pulverized-coal collector is connected with the charging aperture of Powder discharging fan by the second powder feeding pipe; Nipple to be connected between the first powder feeding pipe and the second powder feeding pipe and nipple to be provided with second switch valve.This ignition system for boiler comprises point powder dust feeder of the ignition system that the utility model provides.The utility model is used for realizing power plant's fuel-economizing or non-oil ignition.
Description
Technical field
The utility model relates to Utility Boiler Technology field, particularly relates to a kind of point powder dust feeder and ignition system for boiler of ignition system.
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, causes power plant to adopt grease gun igniting, fuel-economizing cannot be realized even without the target of oil.At least there is following technical problem in prior art:
1) could bio-occlusion powder when in, storage formula vent pulverized coal handling system requires that powder storehouse reaches certain powder position (being generally greater than 2.5m).Within the time of setting up powder position, the weary gas of generation directly will spray into burner hearth, there is the potential safety hazards such as furnace puff.
2), when this pulverized coal preparation system adopts micro-oil or oil-free ignition technology, the initial stage sets up stage of powder position, weary gas because of coal powder density too low, cannot effectively be lighted, and boiler temperature is low, the coal dust entering burner hearth also can not burn, and does not therefore reach the object of fuel-economizing or non-oil ignition.
Therefore, for meeting the demand of this type of power plant's fuel-economizing and non-oil ignition, widening the range of application of fuel-economizing and oil-free ignition technology simultaneously, must transform pulverized coal preparation system.
Utility model content
One of them object of the present utility model is point powder dust feeder and the ignition system for boiler that propose a kind of ignition system, solves prior art and there is the technical problem that cannot realize power plant's fuel-economizing or non-oil ignition.
For achieving the above object, the utility model provides following technical scheme:
Point powder dust feeder of the ignition system that the utility model embodiment provides, comprises mill separator, pulverized-coal collector, Powder discharging fan, the first powder feeding pipe, the second powder feeding pipe and nipple, wherein:
Described mill separator is connected with the import of described pulverized-coal collector by described first powder feeding pipe, and the import of described first powder feeding pipe or described pulverized-coal collector is provided with first controlled valve that can control its whether conducting;
The weary gas outlet of described pulverized-coal collector is connected with the charging aperture of described Powder discharging fan by described second powder feeding pipe;
Described nipple is connected between described first powder feeding pipe and described second powder feeding pipe, described nipple is provided with the second switch valve for controlling the whether conducting of described nipple.
In preferably or alternatively embodiment, a point powder dust feeder for described ignition system also comprises powder sinking tube, the powder falling mouth of described pulverized-coal collector is connected with the charging aperture of Pulverized Coal Bin by described powder sinking tube, and the powder falling mouth of described pulverized-coal collector or described powder sinking tube is provided with the 3rd controlled valve that can control its whether conducting.
In preferably or alternatively embodiment, described second powder feeding pipe is provided with on the partial sector between the weary gas of described nipple and described pulverized-coal collector exports the 3rd controlled valve controlling the whether conducting of this partial sector.
In preferably or alternatively embodiment, described first controlled valve, described second switch valve and described 3rd controlled valve are insertion plate door separately.
In preferably or alternatively embodiment, described nipple is bend pipe.
In preferably or alternatively embodiment, described second switch valve is arranged on the section that on described nipple, position height is higher.
In preferably or alternatively embodiment, feed side and the exit side of described second switch valve are provided with blow device, and the air outlet of described blow device is towards the tube wall of described nipple.
The ignition system for boiler that the utility model embodiment provides comprises point powder dust feeder of the ignition system that burner, coal pulverizer, machine supplying powder, additional coal pulverizer (or claim: the second coal pulverizer, second coal pulverizer) and the arbitrary technical scheme of the utility model provide, wherein:
The discharging opening of described coal pulverizer is connected with the charging aperture of described mill separator;
The discharging opening of described additional coal pulverizer is connected with the charging aperture of Pulverized Coal Bin by described mill separator, described pulverized-coal collector again, the charging aperture of described machine supplying powder is connected with the discharging opening of described Pulverized Coal Bin, and the discharging opening of described machine supplying powder is connected by the charging aperture of air and powder mixer with described burner.
In preferably or alternatively embodiment, described ignition system for boiler also comprises row's powder bellows that air inlet is connected with the discharging opening of described Powder discharging fan, and the air outlet of described row's powder bellows is connected with described air and powder mixer, wherein:
Be provided with coal powder density in described row's powder bellows and mix well device, 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 from described air outlet after relatively uniform for the breeze airflow entered by described air inlet distribution.
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 blinds apparatus comprises the shutter be arranged in described row's powder bellows and the position drive unit be arranged on outside described row's powder bellows, and described position drive unit can drive described shutter to rotate in described row's powder bellows 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 burner is plasma ignition burner, and the discharging opening of described air and powder mixer is connected with the charging aperture of described burner.
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
When the ignition system for boiler using the utility model to provide carries out igniting operation, at the ignition of the boiler initial stage, the first controlled valve can be closed, open second switch valve, coal dust is made directly to enter Powder discharging fan after mill separator, and then enter burner through row's powder bellows and light a fire, owing to carrying out gas solid separation without pulverized-coal collector, coal powder density can reach plasma igniting or tiny-oil ignition to the requirement of coal powder density, can directly be lighted, therefore efficiently solve the problem of the black furnace fuel-economizing of middle storage formula transporting pulverized coal with exhaust gas or non-oil ignition, reach the object of fuel-economizing, operation and maintenance cost are saved.Coordinate the oil-free ignition technology such as plasma igniting to be expected to build without oily power plant simultaneously, remove former fuel system.Meanwhile, apply the utility model and 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, cannot realize storing up power plant's fuel-economizing of formula transporting pulverized coal with exhaust gas pulverized coal preparation system or the technical problem of non-oil ignition in employing so solve prior art.
As preferred version of the present utility model, light a fire successfully after and reach the powder process condition of additional coal pulverizer time, can start additional coal pulverizer is described Pulverized Coal Bin powder process.After treating that Pulverized Coal Bin sets up powder position, open the first controlled valve and the 3rd controlled valve, close second switch valve, now can light a fire by former middle storage formula vent pulverized coal handling system, namely start machine supplying powder and continue igniting, and then further increase reliability and the security of igniting operation.
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:
Fig. 1 is the schematic diagram of existing middle storage formula vent pulverized coal handling system;
Fig. 2 for the utility model embodiment provide in store up formula transporting pulverized coal with exhaust gas ignition system schematic diagram;
The pulverized-coal collector that Fig. 3 provides for the utility model embodiment and the schematic diagram of annexation between ascending tube, down pipe and short circuit
The schematic diagram of powder bellows is arranged in the ignition system for boiler that Fig. 4 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; 281, block; 282, shutter.
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. 4 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 point powder dust feeder and the ignition system for boiler that can realize the ignition system of power plant's fuel-economizing or non-oil ignition.
Below in conjunction with the elaboration that Fig. 2 ~ Fig. 4 carries out specifically to the technical scheme that the utility model provides.
As shown in Figure 2 to 4, point powder dust feeder of the ignition system that the utility model embodiment provides, comprise mill separator 8, pulverized-coal collector 10, Powder discharging fan 22, first powder feeding pipe (or claim: ascending tube) the 25, second powder feeding pipe (or claim: down pipe) 26 and nipple 27, wherein:
Mill separator 8 is connected with the import of pulverized-coal collector 10 by the first powder feeding pipe 25, and the import of the first powder feeding pipe 25 or pulverized-coal collector 10 is provided with first controlled valve 251 that can control its whether conducting.
The weary gas outlet of pulverized-coal collector 10 is connected with the charging aperture of Powder discharging fan 22 by the second powder feeding pipe 26.
Nipple 27 is connected between the first powder feeding pipe and the second powder feeding pipe, nipple 27 is provided with the second switch valve 271 for controlling its whether conducting.
When the ignition system for boiler using the utility model to provide carries out igniting operation, at the ignition of the boiler initial stage, the first controlled valve 251 can be closed, open second switch valve 271, make coal dust enter burner 24 after directly entering Powder discharging fan 22 after mill separator 8 to light a fire, owing to carrying out gas solid separation without pulverized-coal collector, coal powder density can reach plasma igniting or tiny-oil ignition to the requirement of coal powder density, can directly be lighted, admittedly efficiently solve the problem of the black furnace fuel-economizing of middle storage formula transporting pulverized coal with exhaust gas or non-oil ignition, reach the object of fuel-economizing, operation and maintenance cost are saved.Coordinate the oil-free ignition technology such as plasma igniting to be expected to build without oily power plant simultaneously, remove former fuel system, meanwhile, 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 preferably or alternatively embodiment, a point powder dust feeder for ignition system also comprises powder sinking tube, the powder falling mouth of pulverized-coal collector 10 is connected by the charging aperture of powder sinking tube with Pulverized Coal Bin 16, and the powder falling mouth of pulverized-coal collector 10 or powder sinking tube is provided with the 3rd controlled valve 261 that can control its whether conducting.Or, the second powder feeding pipe 26 is provided with on the partial sector between the weary gas of nipple 27 and pulverized-coal collector 10 exports the 3rd controlled valve (do not illustrate in Fig. 2 which) controlling the whether conducting of this partial sector.
As preferably or alternatively embodiment, the first controlled valve 251, second switch valve 271 and the 3rd controlled valve 261 are insertion plate door separately.Insertion plate door have be convenient to dismounting, control and processing, easily manufactured, advantage with low cost.
As preferably or alternatively embodiment, nipple 27 is bend pipe.Not easily pile up coal dust in bend pipe and block, and being conducive to the security improving coal utilization and pulverized coal preparation system.
As preferably or alternatively embodiment, second switch valve 271 is arranged on the section that on nipple 27, position height is higher.Not easily coal dust is piled up near the second switch valve 271 of this structure.
As preferably or alternatively embodiment, feed side and the exit side of second switch valve 271 are provided with blow device, and the air outlet of blow device is towards the tube wall of nipple 27.
Blow device can blow off the coal dust be deposited near second switch valve 271, makes it to fall to down pipe or ascending tube.
The ignition system for boiler that the utility model embodiment provides, be preferably boiler black furnace non-oil ignition system, it comprises point powder dust feeder of the ignition system that burner 24, coal pulverizer 6, machine supplying powder 17, additional coal pulverizer (or claim: the second coal pulverizer, second coal pulverizer) and the arbitrary technical scheme of the utility model provide, wherein:
The discharging opening of coal pulverizer 6 is connected with the charging aperture of mill separator 8.
The discharging opening of additional coal pulverizer is connected with the charging aperture of Pulverized Coal Bin 16 by mill separator 8, pulverized-coal collector 10, the charging aperture of machine supplying powder 17 is connected with the discharging opening of Pulverized Coal Bin 16, and the discharging opening of machine supplying powder 17 is connected with the charging aperture of burner 24 by air and powder mixer 18.
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, moisture absorption pipe 14.
As preferably or alternatively embodiment, ignition system for boiler also comprises row's powder bellows 19 that air inlet is connected with the discharging opening of Powder discharging fan 22, and the air outlet of row's powder bellows 19 is connected with air and powder mixer 18, wherein:
Be provided with coal powder density in row's powder bellows 19 and mix well device, coal powder density mixes well the blinds apparatus that device comprises block 281 and/or position-adjustable, coal powder density mix well device the breeze airflow entered by air inlet can be distributed (relatively) even after export from air outlet.
Block 281 can export the coal dust of each tube cell as far as possible evenly by the row's of making powder bellows 19, reduces coal powder density deviation, is conducive to the enforcement of direct-firing sparking mode.Blinds apparatus can export the coal dust of each tube cell as far as possible evenly by the row's of making powder bellows 19, reduces coal powder density deviation.
As preferably or alternatively embodiment, it is leg-of-mutton support body and the wear-resistant coating being arranged on support body surface that block 281 comprises cross section.Said structure be convenient to processing, manufacture and block 281 wearability is good, to pulverized coal borne air flow apply resistance less.
As preferably or alternatively embodiment, blinds apparatus comprises the shutter 282 in the row's of being arranged on powder bellows 19 and the position drive unit outside the row's of being arranged on powder bellows 19, and position drive unit can drive shutter 282 to rotate and the angle (this angle can be 0 ° ~ 90 °) changed in rotation process between the length direction of shutter 282 or the air-out direction of width and row's powder bellows 19 in row's powder bellows 19.
Shutter 282 angle of regulation range is 0 ~ 90 °.Shutter 282 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 282 angle furnishing 0 °, to reduce to arrange the resistance in powder bellows 19.
When block 281 and one or more levels shutter 282 being installed simultaneously in row's powder bellows 19, block 281 and shutter 282 can play the coal dust distribution in even bellows jointly, reduce the coal dust deviation entering each tube cell, be conducive to the effect of the enforcement of direct-firing sparking mode.
As preferably or alternatively embodiment, burner 24 is plasma ignition burner, and the discharging opening of air and powder mixer 18 is connected with the charging aperture of burner 24.Plasma ignition burner can be one deck, the second or more layer, adopts it to carry out igniting operation and has good reliability, saves the advantage of fuel oil.Certainly, other fuel-economizing ignition installations also can be adopted to light a fire for burner 24.
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 (12)
1. a point powder dust feeder for ignition system, is characterized in that, comprise mill separator, pulverized-coal collector, Powder discharging fan, the first powder feeding pipe, the second powder feeding pipe and nipple, wherein:
Described mill separator is connected with the import of described pulverized-coal collector by described first powder feeding pipe, and the import of described first powder feeding pipe or described pulverized-coal collector is provided with first controlled valve that can control its whether conducting;
The weary gas outlet of described pulverized-coal collector is connected with the charging aperture of described Powder discharging fan by described second powder feeding pipe;
Described nipple is connected between described first powder feeding pipe and described second powder feeding pipe, described nipple is provided with the second switch valve for controlling the whether conducting of described nipple.
2. point powder dust feeder of ignition system according to claim 1, it is characterized in that, a point powder dust feeder for described ignition system also comprises powder sinking tube, the powder falling mouth of described pulverized-coal collector is connected with the charging aperture of Pulverized Coal Bin by described powder sinking tube, and the powder falling mouth of described pulverized-coal collector or described powder sinking tube is provided with the 3rd controlled valve that can control its whether conducting.
3. point powder dust feeder of ignition system according to claim 1, it is characterized in that, described second powder feeding pipe is provided with on the partial sector between the weary gas of described nipple and described pulverized-coal collector exports the 3rd controlled valve controlling the whether conducting of this partial sector.
4. point powder dust feeder of the ignition system according to Claims 2 or 3, it is characterized in that, described first controlled valve, described second switch valve and described 3rd controlled valve are insertion plate door separately.
5. point powder dust feeder of ignition system according to claim 1, it is characterized in that, described nipple is bend pipe.
6. point powder dust feeder of ignition system according to claim 1, it is characterized in that, described second switch valve is arranged on the section that on described nipple, position height is higher.
7. point powder dust feeder of ignition system according to claim 1, it is characterized in that, feed side and the exit side of described second switch valve are provided with blow device, and the air outlet of described blow device is towards the tube wall of described nipple.
8. an ignition system for boiler, is characterized in that, comprises point powder dust feeder of burner, coal pulverizer, machine supplying powder, additional coal pulverizer and the arbitrary described ignition system of claim 1-7, wherein:
The discharging opening of described coal pulverizer is connected with the charging aperture of described mill separator;
The discharging opening of described additional coal pulverizer is connected with the charging aperture of Pulverized Coal Bin by described mill separator, described pulverized-coal collector again, the charging aperture of described machine supplying powder is connected with the discharging opening of described Pulverized Coal Bin, and the discharging opening of described machine supplying powder is connected by the charging aperture of air and powder mixer with described burner.
9. ignition system for boiler according to claim 8, is characterized in that, described ignition system for boiler also comprises row's powder bellows that air inlet is connected with the discharging opening of described Powder discharging fan, and the air outlet of described row's powder bellows is connected with described air and powder mixer, wherein:
Be provided with coal powder density in described row's powder bellows and mix well device, 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 from described air outlet after relatively uniform for the breeze airflow entered by described air inlet distribution.
10. ignition system for boiler according to claim 9, 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 comprises cross section.
11. ignition system for boiler according to claim 9, it is characterized in that, described blinds apparatus comprises the shutter be arranged in described row's powder bellows and the position drive unit be arranged on outside described row's powder bellows, and described position drive unit can drive described shutter to rotate in described row's powder bellows 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.
12.-11 arbitrary described ignition system for boiler according to Claim 8, it is characterized in that, described burner is plasma ignition burner, and the discharging opening of described air and powder mixer is connected with the charging aperture of described burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645170.0U CN204187657U (en) | 2014-10-31 | 2014-10-31 | Point powder dust feeder and the ignition system for boiler of ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645170.0U CN204187657U (en) | 2014-10-31 | 2014-10-31 | Point powder dust feeder and the ignition system for boiler of ignition system |
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| Publication Number | Publication Date |
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| CN204187657U true CN204187657U (en) | 2015-03-04 |
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| CN201420645170.0U Withdrawn - After Issue CN204187657U (en) | 2014-10-31 | 2014-10-31 | Point powder dust feeder and the ignition system for boiler of ignition system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728864A (en) * | 2015-04-09 | 2015-06-24 | 航天神洁（北京）环保科技有限公司 | High-power adjustable plasma ignition test bed system for pulverized coal boiler |
| CN105091012A (en) * | 2015-08-26 | 2015-11-25 | 烟台龙源电力技术股份有限公司 | Exhaust gas powder conveying device and exhaust gas powder conveying system applied to lignite germanium extraction technology |
| CN105627343A (en) * | 2014-10-31 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Powder separating and feeding device of ignition system and boiler ignition system |
-
2014
- 2014-10-31 CN CN201420645170.0U patent/CN204187657U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627343A (en) * | 2014-10-31 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Powder separating and feeding device of ignition system and boiler ignition system |
| CN105627343B (en) * | 2014-10-31 | 2017-12-26 | 烟台龙源电力技术股份有限公司 | Ignition system divides powder dust feeder and ignition system for boiler |
| CN104728864A (en) * | 2015-04-09 | 2015-06-24 | 航天神洁（北京）环保科技有限公司 | High-power adjustable plasma ignition test bed system for pulverized coal boiler |
| CN104728864B (en) * | 2015-04-09 | 2017-02-22 | 航天神洁（北京）环保科技有限公司 | High-power adjustable plasma ignition test bed system for pulverized coal boiler |
| CN105091012A (en) * | 2015-08-26 | 2015-11-25 | 烟台龙源电力技术股份有限公司 | Exhaust gas powder conveying device and exhaust gas powder conveying system applied to lignite germanium extraction technology |
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