CN202229181U - Tiny-oil ignition and stable combustion device - Google Patents
Tiny-oil ignition and stable combustion device Download PDFInfo
- Publication number
- CN202229181U CN202229181U CN2011202681127U CN201120268112U CN202229181U CN 202229181 U CN202229181 U CN 202229181U CN 2011202681127 U CN2011202681127 U CN 2011202681127U CN 201120268112 U CN201120268112 U CN 201120268112U CN 202229181 U CN202229181 U CN 202229181U
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- pipe
- tiny
- burning
- oil
- pulverized coal
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Abstract
The utility model belongs to the technical field of coal-fired boilers, and particularly relates to a tiny-oil ignition and stable combustion device which comprises a primary pulverized coal pipe, an intensity baffle block, a pre-burning pipe, a tiny-oil combustor, a first air film cooling air duct and a nozzle, and is characterized in that the pre-burning pipe is arranged in the primary pulverized coal pipe, and the first air film cooling air duct is arranged between the pre-burning pipe and the primary pulverized coal pipe; the intensity baffle block is arranged at a pulverized coal flow inlet end of the primary pulverized coal pipe, close to the inner wall of the pre-burning pipe; and the tiny-oil combustor is raidally installed in the pre-burning pipe back and forth. The tiny-oil ignition and stable combustion device has stable and reliable flame and high coal powder burnout rate, is not easy to have fire cutoff, does not increase pulverized coal resistance, and does not reduce output of the combustor as the design improvement that the tiny-oil combustor is raidally installed in the pre-burning pipe back and forth is used as the function of the main combustor. The ignition and stable combustion device has a simple structure, low maintenance amount and obvious oil saving effect.
Description
Technical field
The utility model belongs to the coal-burning boiler technical field, particularly relates to a kind of tiny-oil ignition and smooth combustion apparatus.
Background technology
The ignition trigger of coal burning boiler of power station all can consume great amount of fuel oil with steady combustion every year, and especially the paddy peak difference of China's mains supply increases day by day, and start and stop that unit must be frequent and long-time low-load combustion-stabilizing have more aggravated the fuel consume of coal burning boiler of power station.In recent years, along with the continuous rise of crude oil price, the power station more and more is restricted with fuel oil, and ignition of the boiler and stable combustion oil also are used as an important performance assessment criteria.
In recent years, along with development of science and technology, constantly there are new fuel-saving technique, product to occur, particularly the tiny-oil ignition device.Because the tiny-oil ignition apparatus system is simple, cost is low, maintenance is few, in the coal-burning boiler energy-saving transformation, obtains application more and more widely.The critical piece of tiny-oil ignition device is little oil burner; In order to guarantee little oil burner smooth combustion; General all along the installation of primary wind and powder direction, because the constraint of primary wind and powder pipe diameter can only be arranged a little oil gun in the confined space; This kind structure and layout are not easy to sparking mode more flexibly, and have increased wind powder resistance, reduce burner and exert oneself.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is: igniting and smooth combustion apparatus that the little little oil burner radial arrangement of a kind of wind powder resistance is provided.
(2) technical scheme
In order to solve the problems of the technologies described above; The utility model provides a kind of tiny-oil ignition and smooth combustion apparatus; Comprise primary wind and powder pipe, deep or light block, pre-burning pipe, little oil burner, the first air film cooling air channel, second air film cooling air channel and the spout; It is characterized in that the pre-burning pipe is installed in the primary wind and powder pipe, the first air film cooling air channel is arranged between pre-burning pipe and the primary wind and powder pipe; The wind powder air flow inlet end of primary wind and powder pipe is equipped with deep or light block near the inwall at pre-burning pipe place; Little oil burner footpath is installed on the pre-burning pipe forwards, backwards.
Wherein, the number of little oil burner is no less than two, and little oil burner footpath is installed on the pre-burning pipe forwards, backwards.
Wherein, the second air film cooling air channel is arranged between spout and the primary wind and powder pipe.
Wherein, the second air film cooling air channel is connected with secondary air box.
(3) beneficial effect
The utility model compared with prior art; Little oil burner flame stabilization, reliable, the coal dust burnout rate is high, is difficult for cutoff; The design improvement that little oil burner footpath is arranged in the pre-burning pipe does not forwards, backwards influence the function as main burner, does not increase wind powder resistance, does not reduce burner and exert oneself.Igniting and smooth combustion apparatus are simple in structure, and maintenance is low, and fuel-economizing is remarkable.
Description of drawings
Fig. 1 is the utility model example structure principle schematic.
Wherein, 1: the primary wind and powder pipe; 2: deep or light block; 3: the pre-burning pipe; 4: main little oil burner; 5: auxilliary little oil burner; 6: the first air film cooling air channels; 7: the second air film cooling air channels; 8: spout; 9: secondary air box; 10: flame flow; 11: wind powder air-flow; A: main burner flame; B: auxilliary burner flame.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Present embodiment tiny-oil ignition and smooth combustion apparatus comprise the primary wind and powder pipe 1 be located in the boiler-burner, deep or light block 2, pre-burning pipe 3, main little oil burner 4, auxilliary little oil burner 5, the first air film cooling air channel 6, the second air film cooling air channel 7, spout 8, secondary air box 9; The pre-burning pipe 3 of certain size is installed in the primary wind and powder pipe 1, and the front and back of radially going up of pre-burning pipe 3 are equipped with main little oil burner 4 and auxilliary little oil burner 5.Main little oil burner 4 drops into the back and forms main burner flame A; Auxilliary little oil burner 5 drops into the back and forms auxilliary burner flame B; In pre-burning pipe 3, form first-stage burning chamber I; Form combustion chamber, second level II between the end of the end of pre-burning pipe 3 and primary wind and powder pipe 1, form third level combustion chamber III between the end of the end of primary wind and powder pipe 1 and spout 8.On primary wind and powder pipe 1 inwall of 1 of pre-burning pipe 3 head ends and primary wind and powder pipe, deep or light block 2 is housed; The circular passage that pre-burning pipe 3 and primary wind and powder pipe are 1 forms the first air film cooling air channel 6; The circular passage that primary wind and powder pipe 1 and spout are 8 forms the second air film cooling air channel, 7, the first air film cooling air channels 6 and the adherent air film cooling air of the second air film cooling air channel, 7 formation can prevent effectively that pre-burning pipe 3, primary wind and powder pipe 1, spout 8 from overtemperatures, coking, ablation incident taking place.
Primary wind and powder air-flow 11 gets into primary wind and powder pipe 1 through elbow; And carry out deep or light separation through deep or light block 2; The dense phase pulverized coal at center directly gets into pre-burning pipe 3; Successively, separate out the fugitive constituent burning rapidly and light part coal dust entering combustion chamber, second level II through crossing with it main burner flame A and the central area of auxilliary burner flame B; Dilute phase wind powder mixture all around is through the first air film cooling air channel 6; Pre-burning pipe 3 cooled off and get into combustion chamber, second level II mix with the dense phase pulverized coal of lighting; In time replenish dense phase pulverized coal burning requisite oxygen amount, enlarge the burning back and get into third level combustion chamber III; Secondary hot-air in the secondary air box 9 is through the second air film cooling air channel 7; Cooling primary wind and powder pipe 1 forms adherent air film cooling air at the inwall of spout 8, and mixes with the breeze airflow that gets into third level combustion chamber III; Continue to replenish the required oxygen amount of coal dust firing, further enlarge burning; Clean-burning high temperature pulverized coal flame air-flow 10 sprays into burner hearth through spout 8, replaces big oil gun that burner hearth is heated.
Because little oil burner A, B radially install, do not stretch in the primary wind and powder pipe 1, therefore having reduced does not greatly influence the design performance parameter of original burner basically because the wind powder resistance that brings axially is installed.
According to actual needs, the foregoing description also can adjust powder-feeding amount and little oil burner drops into quantity etc., makes boiler startup meet the requirement of increasing temperature and pressure curve, thereby reduces boiler startup or the next fuel consume of stable burning belt greatly.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (4)
1. tiny-oil ignition and smooth combustion apparatus; Comprise primary wind and powder pipe (1), deep or light block (2), pre-burning pipe (3), little oil burner, the first air film cooling air channel (6), the second air film cooling air channel (7) and spout (8); It is characterized in that; Pre-burning pipe (3) is installed in the primary wind and powder pipe (1), and the first air film cooling air channel (6) is arranged between pre-burning pipe (3) and the primary wind and powder pipe (1); The inwall that the wind powder air flow inlet end of primary wind and powder pipe (1) is located near pre-burning pipe (3) is equipped with deep or light block (2); Little oil burner radially is installed on the pre-burning pipe (3).
2. tiny-oil ignition as claimed in claim 1 and smooth combustion apparatus is characterized in that, the number of said little oil burner is no less than two, and little oil burner footpath is installed on the pre-burning pipe (3) forwards, backwards.
3. tiny-oil ignition as claimed in claim 1 and smooth combustion apparatus is characterized in that, the second air film cooling air channel (7) is arranged between said spout (8) and the primary wind and powder pipe (1).
4. tiny-oil ignition as claimed in claim 3 and smooth combustion apparatus is characterized in that, the said second air film cooling air channel (7) is connected with secondary air box (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202681127U CN202229181U (en) | 2011-07-27 | 2011-07-27 | Tiny-oil ignition and stable combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202681127U CN202229181U (en) | 2011-07-27 | 2011-07-27 | Tiny-oil ignition and stable combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229181U true CN202229181U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202681127U Expired - Lifetime CN202229181U (en) | 2011-07-27 | 2011-07-27 | Tiny-oil ignition and stable combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229181U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698166A (en) * | 2016-02-05 | 2016-06-22 | 沈阳时代清洁能源科技有限公司 | Multi-fire-pillar pulverized coal combustion machine |
| CN105716076A (en) * | 2016-02-05 | 2016-06-29 | 沈阳时代清洁能源科技有限公司 | Electrolysis oxy-hydrogen gas pulverized coal igniting burner |
| CN106931431A (en) * | 2017-03-09 | 2017-07-07 | 上海锅炉厂有限公司 | A kind of Industrial Boiler coal burner |
| CN108613177A (en) * | 2018-05-24 | 2018-10-02 | 国电江苏电力有限公司谏壁发电厂 | A kind of oil burner with nozzle cooling device |
-
2011
- 2011-07-27 CN CN2011202681127U patent/CN202229181U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698166A (en) * | 2016-02-05 | 2016-06-22 | 沈阳时代清洁能源科技有限公司 | Multi-fire-pillar pulverized coal combustion machine |
| CN105716076A (en) * | 2016-02-05 | 2016-06-29 | 沈阳时代清洁能源科技有限公司 | Electrolysis oxy-hydrogen gas pulverized coal igniting burner |
| CN106931431A (en) * | 2017-03-09 | 2017-07-07 | 上海锅炉厂有限公司 | A kind of Industrial Boiler coal burner |
| CN108613177A (en) * | 2018-05-24 | 2018-10-02 | 国电江苏电力有限公司谏壁发电厂 | A kind of oil burner with nozzle cooling device |
| CN108613177B (en) * | 2018-05-24 | 2023-11-28 | 国家能源集团谏壁发电厂 | Oil burner with shower nozzle cooling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |