CN201159452Y - Self-adapting ignition combustor of direct current boiler - Google Patents
Self-adapting ignition combustor of direct current boiler Download PDFInfo
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- CN201159452Y CN201159452Y CNU2007201251820U CN200720125182U CN201159452Y CN 201159452 Y CN201159452 Y CN 201159452Y CN U2007201251820 U CNU2007201251820 U CN U2007201251820U CN 200720125182 U CN200720125182 U CN 200720125182U CN 201159452 Y CN201159452 Y CN 201159452Y
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Abstract
The utility model discloses a direct-current boiler self-adaptation ignition burner which lies on the lower part of a furnace, which is characterized in that the burner comprises an external one-time blow-pipe, an internal one-time blow-pipe and an oil squirt, an outlet of a main coal mill is connected with a fine powder triplet valve which the external one-time blow-pipe and the internal one-time blow-pipe through a first and a second fine powder pipes, an accessory coal mill is arranged besides the main coal mill parallelingly and the outlet of the accessory coal mill is communicated with a hyper-fine powder triplet valve which is communicated with a one-time wind accessory pipe and a one-time wind main pipe through the first and the second fine powder pipes respectively. The utility model has the advantages of simple structure, realizing the separated combustion of rough and fine coal powder, improving the stability of the boiler ignition and low-charge operation greatly, saving fuel, reducing the generation cost, preventing coking, wide coal adaptability and the like.
Description
Technical field
The utility model belongs to thermal power generation ignition device technique field, specifically, is a kind of Monotube boiler adaptation pilot burner that is used for the power plant boiler igniting.
Background technology
The oil consumption rich and influential family that acts as a fuel of thermal power plant will consume great amount of fuel oil its every year and be used for ignition of the boiler and steady combustion.Show that according to Committee of Development and Reform's data the annual oil consumption of China's generating set is amounted to 41,800,000,000 yuan of RMB up to 7,600,000 tons.And China is an oil-poor country, and the oil consumption amount was 3.17 hundred million tons in 2004, and the domestic production amount is 1.76 hundred million tons, and the net importation amount is 1.51 hundred million tons, and externally interdependency reaches 47.3%.Therefore it is all significant for reducing cost of electricity-generating, raising electricity power enterprise's economic benefit and Chinese energy safety strategy to reduce the generating oil consumption.
Country had started Medium-and Long-Term Plan for Conserving Energy Resources in 2005, had proposed the Eleventh Five-Year Plan period to save and the objective of the struggle of 3,800 ten thousand tons in alternative oil.Be to reduce cost of electricity-generating, realize the fuel-economizing target, develop and novel fuel-economizing ignition of the boiler combustion technology is installed has become the most urgent demand of power plant.The ignition device of the most of coal-burning power plant of present China, mainly comprise main coal pulverizer, airduct, burner and a burner hearth, the delivery outlet of main coal pulverizer communicates with a described airduct through the fine powder pipe, the outlet of an airduct links to each other with burner, burner is positioned at the bottom of described burner hearth, described burner is made up of an outer airduct and oil gun, and wherein oil gun is positioned on the main shaft of an outer airduct, and the nozzle of oil gun is near the outlet of an outer airduct; Outer wind tube outlet section inwall near the oil gun nozzle is provided with a circle boss as pulverized coal concentrator again.At the igniting initial stage, oil gun sprays into great amount of fuel oil to burner hearth, oil by burning heating a period of time after, coal dust is through the outlet ejection of airduct, the outer airduct of burner, coal dust burns in that this outlet is outer, after coal dust firing is stablized, turns off the oil gun oil circuit.But the general deviation of ature of coal of China's power station fire coal, ature of coal fluctuation are big.
Coal dust is thick excessively, is difficult to realize fully burning at the igniting initial stage, needs to consume a large amount of fuel oils, and fuel consumption is significantly risen; Coal dust is meticulous, and near heating surface coking reaching in burner easily influences boiler thermal output, and serious situation also can cause the heating surface booster, impacts to safe operation of power plant.
The shortcoming of existing direct current cooker burner: when boiler of power plant ignition initial stage and underrun, combustion instability, fuel consumption is big; During stable operation of the boiler, near the interior and easy coking of heating surface of outlet of burner.
The utility model content
Problem at the prior art existence, the purpose of this utility model is to provide a kind of can realize the segregated combustion of thickness coal dust, can when ignition initial stage and underrun, save fuel oil, again can be when stable operation of the boiler anti-coking, reduce the Monotube boiler adaptation pilot burner of thermal power generation cost.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of Monotube boiler adaptation pilot burner, comprise main coal pulverizer, the wind person in charge, burner and a burner hearth, wherein burner is positioned at the bottom of described burner hearth, its key is: this burner is made up of an outer airduct, an interior airduct and oil gun, wherein oil gun is positioned on the main shaft of an airduct, and the nozzle of oil gun is near the outlet of an interior airduct; An interior airduct is positioned on the main shaft of an outer airduct, and the outlet of an interior airduct is near the outlet of an outer airduct; Described oil gun passes a wind looped pipeline and a wind is responsible for, and the oil gun afterbody is connected with oil pipe;
The outlet of described main coal pulverizer is connected with the fine powder triple valve, this fine powder triple valve communicates with the described wind person in charge and a wind looped pipeline through the first fine powder pipe and the second fine powder pipe respectively, a described wind is responsible for and is communicated with an outer airduct, and a described wind looped pipeline communicates with an interior airduct; Be set side by side with secondary coal pulverizer with described main coal pulverizer, the outlet of this pair coal pulverizer is connected with the superfine powder triple valve, and this superfine powder triple valve communicates with a wind looped pipeline and a wind person in charge through the first ultra-fine tube cell and the second ultra-fine tube cell respectively.
According to boiler operatiopn operating mode difference, control the switching of fine powder triple valve and superfine powder triple valve respectively, concrete operations are as follows:
Boiler is when ignition trigger, underrun, ature of coal deviation, fine breeze and microfine coal are respectively through the first fine powder pipe and the first ultra-fine tube cell, spray into burner hearth from an outer airduct of burner, an interior airduct respectively then, help igniting and smooth combustion, effectively reduce igniting and stable combustion oil, saved fuel oil; Behind flameholding, fine breeze and microfine coal spray into burner hearth from an interior airduct, an outer airduct respectively then respectively through the second fine powder pipe and the second ultra-fine tube cell, and then postpone coal powder ignition, prevent in the burner and near heating surface coking.
Described burner hearth also is connected with secondary air channel, and the outlet of this secondary air channel is positioned at described burner top.
Described wind is responsible for, the import of wind looped pipeline and secondary air channel is equipped with blower fan and communicates with atmosphere.
Secondary air channel is sent into oxygen in burner hearth, promote the abundant burning of coal dust in the burner hearth.
The inwall at an interior wind tube outlet place of close described oil gun nozzle is provided with a circle boss.
Boss carries out deep or light separation as pulverized coal concentrator with the coal dust in the interior airduct, makes thick coal culm concentrate on the central area burning of an outer wind tube outlet, is easy to coal powder ignition and smooth combustion.
Beneficial effect: of the present utility model simple in structure, can realize the segregated combustion of thickness coal dust, improved the stability of ignition of the boiler and underrun greatly, when ignition initial stage and underrun, save fuel oil, when stable operation of the boiler anti-coking, reduce the thermal power generation cost, have characteristics such as coal adaptability is wide, can be according to coal and service condition, realize fuel-economizing igniting and steady combustion, optimize burning etc., can self adaptation few-oil ignition and smooth combustion.
Description of drawings
Fig. 1 is a system schematic of the present utility model;
Fig. 2 is the structural representation of burner.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As Fig. 1, shown in 2, a kind of Monotube boiler adaptation pilot burner, by main coal pulverizer 1, secondary coal pulverizer 1 ', one time wind is responsible for 2, a wind looped pipeline 2 ', burner 11, burner hearth 4, the first fine powder pipe 5, the second fine powder pipe 5 ', fine powder triple valve 7, superfine powder triple valve 8, the first ultra-fine tube cell 6, the second ultra-fine tube cell 6 ', an outer airduct 12 and an interior airduct 12 ' are formed, wherein burner 11 is positioned at the bottom of described burner hearth 4, this burner 11 is by an outer airduct 12, an interior airduct 12 ' and oil gun 3 are formed, wherein oil gun 3 is positioned on the main shaft of an airduct 12 ', and the nozzle of oil gun 3 is near the outlet of an interior airduct 12 '; An interior airduct 12 ' is positioned on the main shaft of an outer airduct 12, and the outlet of an interior airduct 12 ' is near the outlet of an outer airduct 12; Described oil gun 3 passes a wind looped pipeline 2 ' and a wind is responsible for 2, and oil gun 3 afterbodys are connected with oil pipe 13;
Be welded with support between an outer airduct 12 and the interior airduct 12 ' and fix, be welded with support between a described interior airduct 12 ' and the oil gun 3 and fix.
The outlet of described main coal pulverizer 1 is connected with fine powder triple valve 7, this fine powder triple valve 7 communicates through the first fine powder pipe 5 and 2 and wind looped pipelines 2 ' of the second fine powder pipe 5 ' and the described wind person in charge respectively, described wind is responsible for 2 and is communicated with an outer airduct 12, and a described wind looped pipeline 2 ' communicates with an interior airduct 12 '; Be set side by side with secondary coal pulverizer 1 ' with described main coal pulverizer 1, the outlet of this pair coal pulverizer 1 ' is connected with superfine powder triple valve 8, and this superfine powder triple valve 8 communicates with a wind looped pipeline 2 ' and a wind person in charge 2 through the first ultra-fine tube cell 6 and the second ultra-fine tube cell 6 ' respectively.
According to boiler operatiopn operating mode difference, control the switching of fine powder triple valve 7 and superfine powder triple valve 8 respectively, concrete operations are as follows:
Boiler is when ignition trigger, underrun, ature of coal deviation, fine breeze and microfine coal are respectively through the first fine powder pipe 5 and the first ultra-fine tube cell 6, spray into burner hearth 4 from an outer airduct 12 of burner, an interior airduct 12 ' respectively then, help igniting and smooth combustion, effectively reduce igniting and stable combustion oil, saved fuel oil; Behind flameholding, fine breeze and microfine coal are respectively through the second fine powder pipe 5 ' and the second ultra-fine tube cell 6 ', spray into burner hearth 4 from an interior airduct 12 ', an outer airduct 12 respectively then, and then postpone coal powder ignition, prevent in the burner and near heating surface coking.
Described burner hearth 4 also is connected with secondary air channel 9, and the outlet of this secondary air channel 9 is positioned at described burner 11 tops.
The import of the described wind person in charge 2, wind looped pipelines 2 ' and secondary air channel 9 is equipped with blower fan and communicates with atmosphere.
The inwall in interior airduct a 12 ' exit of close described oil gun 3 nozzles is provided with a circle boss 10.
Boss 10 carries out deep or light separation as pulverized coal concentrator with the coal dust in the interior airduct 12 ', makes thick coal culm concentrate on the central area burning of an outer airduct 12 outlets, is easy to coal powder ignition and smooth combustion.
Its operation principle is: boiler is when ignition trigger, underrun, ature of coal deviation, by regulating fine powder triple valve 7 and superfine powder triple valve 8, main coal pulverizer 1 and secondary coal pulverizer 1 ' are communicated with the first fine powder pipe 5 and the first ultra-fine tube cell 6 respectively, and fine breeze and microfine coal spray into burner hearth by an outer airduct 12 of burner, an interior airduct 12 '; Behind the flameholding, main coal pulverizer 1 and secondary coal pulverizer 1 ' are communicated respectively with the second fine powder pipe 5 ' and the second ultra-fine tube cell 6 ', fine breeze and microfine coal spray into burner hearth by an interior airduct 12 ' of burner, an outer airduct 12.
Claims (3)
1, a kind of Monotube boiler adaptation pilot burner, comprise main coal pulverizer (1), the wind person in charge (2), burner (11) and a burner hearth (4), wherein burner (11) is positioned at the bottom of described burner hearth (4), it is characterized in that: this burner (11) is made up of an outer airduct (12), an interior airduct (12 ') and oil gun (3), wherein oil gun (3) is positioned on the main shaft of an airduct (12 '), and the nozzle of oil gun (3) is near the outlet of an interior airduct (12 '); An interior airduct (12 ') is positioned on the main shaft of an outer airduct (12), and the outlet of an interior airduct (12 ') is near the outlet of an outer airduct (12); Described oil gun (3) passes a wind looped pipeline (2 ') and a wind is responsible for (2), and oil gun (3) afterbody is connected with oil pipe (13);
The outlet of described main coal pulverizer (1) is connected with fine powder triple valve (7), this fine powder triple valve (7) communicates with the described wind person in charge (2) and a wind looped pipeline (2 ') through the first fine powder pipe (5) and the second fine powder pipe (5 ') respectively, a described wind is responsible for (2) and is communicated with an outer airduct (12), and a described wind looped pipeline (2 ') communicates with an interior airduct (12 '); Be set side by side with secondary coal pulverizer (1 ') with described main coal pulverizer (1), the outlet of this pair coal pulverizer (1 ') is connected with superfine powder triple valve (8), and this superfine powder triple valve (8) communicates with a wind looped pipeline (2 ') and a wind person in charge (2) through the first ultra-fine tube cell (6) and the second ultra-fine tube cell (6 ') respectively.
2, according to the described Monotube boiler adaptation pilot burner of claim 1, it is characterized in that: described burner hearth (4) also is connected with secondary air channel (9), and the outlet of this secondary air channel (9) is positioned at described burner (11) top.
3, according to the described Monotube boiler adaptation pilot burner of claim 1, it is characterized in that: the inwall in an interior airduct (the 12 ') exit of close described oil gun (3) nozzle is provided with a circle boss (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251820U CN201159452Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustor of direct current boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201251820U CN201159452Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustor of direct current boiler |
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| Publication Number | Publication Date |
|---|---|
| CN201159452Y true CN201159452Y (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007201251820U Expired - Fee Related CN201159452Y (en) | 2007-09-10 | 2007-09-10 | Self-adapting ignition combustor of direct current boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807004A (en) * | 2015-04-15 | 2015-07-29 | 华南理工大学 | Rough and fine coal powder separating and combusting device in coal powder pipe |
| CN108180468A (en) * | 2018-02-10 | 2018-06-19 | 西安交通大学 | A kind of in due course oxygen supply decoupling burning device of multistage air distribution across Load Regulation |
-
2007
- 2007-09-10 CN CNU2007201251820U patent/CN201159452Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807004A (en) * | 2015-04-15 | 2015-07-29 | 华南理工大学 | Rough and fine coal powder separating and combusting device in coal powder pipe |
| CN108180468A (en) * | 2018-02-10 | 2018-06-19 | 西安交通大学 | A kind of in due course oxygen supply decoupling burning device of multistage air distribution across Load Regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Zhong Neng yuan Neng Technology Co., Ltd. Assignor: CPI Yuanda Environmental-Protection Engineering Co., Ltd.|Chongqing University Contract fulfillment period: 2009.4.20 to 2015.4.19 Contract record no.: 2009110000138 Denomination of utility model: Self-adapting ignition combustor of direct current boiler Granted publication date: 20081203 License type: Exclusive license Record date: 20090618 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.4.20 TO 2015.4.19; CHANGE OF CONTRACT Name of requester: BEIJING ZHONGDIAN YUANNENG SCIENCE CO., LTD. Effective date: 20090618 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 |