CN201093529Y - Two-stage blunt body minim oil lighter - Google Patents
Two-stage blunt body minim oil lighter Download PDFInfo
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- CN201093529Y CN201093529Y CNU2007200914499U CN200720091449U CN201093529Y CN 201093529 Y CN201093529 Y CN 201093529Y CN U2007200914499 U CNU2007200914499 U CN U2007200914499U CN 200720091449 U CN200720091449 U CN 200720091449U CN 201093529 Y CN201093529 Y CN 201093529Y
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Abstract
The utility model provides a two-stage blunt-body tiny-oil igniter, belonging to the boiler ignition technology. The utility model adopts a two-stage or over two-stage multi-stage casing manner to form a composite chamber and has a two-stage blunt-body; a fuel oil gasification igniter is arranged in a single-stage blunt-body (6) to form a blunt-body gasification igniter; the single-stage blunt-body is provided with a moving structure which can be contracted at the front-and-rear part of a burner and a rod part (8) with a cavity structure at one end; the two-stage blunt-body (7) is arranged at the outlet of the burner, namely, in a final-stage combustion chamber. The ignition burner can directly ignite coal powder when a boiler is turned on in the cold condition, and has stable combustion performance when the boiler is at ultra-low load. The utility model can be applied to the anthracite coal and the low-volatile coal seed, and make use of microcontent oil (10 to 15 kg/h) to ignite a large amount of coal powder (2 to 5 t/h). Compared with the normal oil pistol, the boiler is turned on under the cold condition, saving the oil up to 85 percent relative to the anthracite coal. Due to the small amount of fuel quantity, an electrofilter can be also put into practice after ignition, with environmental protection and high practicability.
Description
Technical field
The utility model belongs to the ignition of the boiler technology, mainly proposes a kind of two-stage bluff body tiny-oil ignition device.
Background technology
Energy savings reduces blowdown, is the world subject in the modern social development.The economizing on coal of large-sized boiler, fuel-saving technique are particularly important, because fuel oil is in short supply day by day, expensive, in order to save fuel oil, domestic successful has been developed plasma non-oil ignition technology, the few oil of small oil gun directly firing coal-dust technology, little oil gas firing coal-dust technology.
Plasma non-oil ignition technology is applicable to high-volatile bituminous coal, brown coal, but there is system complex in it, and investment is big, gets angry shortcomings such as parts easily pollute, scaling loss, and also is not suitable for low-volatile coal such as anthracite at present.
Small oil gun few-oil ignition technology has obtained using comparatively widely on boiler, and equipment investment is few, and the reliability height is practical.Little oil gas firing coal-dust technology is the development of small oil gun firing technique, and the ignition temperature of gasified fuel is higher, has improved the pyrolysis to coal dust during igniting, and is more fuel-efficient during firing coal-dust.But present disclosed tiny-oil ignition technology is incompatibility anthracite, low-volatile coal inferior still.
So far, most of little oil burner has all adopted multistage sleeve pipe, forms multistage pulverized coal combustor, with the effect that realizes that fractional combustion, air-flow cool off, light step by step.But, sum up the oil gun arrangement form of domestic little oily coal dust start-up burner, for following several:
(1) oil gun is placed the outer oil combustion chamber of airduct, make the gasification of fuel oil burning produce thermal-flame, again the fuel oil flame of high temperature is sprayed in airduct, with firing coal-dust airflow (as patent ZL03255982.5 and ZL200520101974.5).
(2) will gasify in the one-level sleeve pipe of the direct insertion point of oil gun ignition combustor, make the direct firing coal-dust airflow of fuel oil flame.
(3) the bigger tubulose oil gas combustion chamber of oil gun and diameter of will gasifying is inserted in the one-level sleeve pipe of start-up burner together, makes the breeze airflow in the high temperature fuel oil flame ignition one-level sleeve pipe.
More than several modes, all do not adopt the high temperature gases recirculating technology to strengthen ignition to coal dust.Therefore, present disclosed tiny-oil ignition technology still can not adapt to anthracite, low-volatile coal inferior etc.
Summary of the invention
The purpose that the utility model proposes a kind of two-stage bluff body tiny-oil ignition device just is to strengthen the effect of lighting to coal dust, and makes it can adapt to the needs of lighting of anthracite and low-volatile coal.
The utility model is finished the technical scheme that its invention task takes: start-up burner adopts two-stage or the above multistage sleeve pipe mode of two-stage to constitute composite chamber; Be provided with the two-stage bluff body, be provided with the gasification of fuel oil igniter and constitute bluff body gasification point firearm in the one-level bluff body, one-level bluff body one end has the bar portion of cavity structure, and the one-level bluff body is can be at the elastic moving structure of burner; Can in burner, stretch, thereby can suitably adjust ignition location, also can after igniting is finished, it be withdrawed from the one-level combustion chamber, prevent the igniter wearing and tearing, and help normal operation.It is in the final-stage combustion chamber that the secondary bluff body is arranged on burner outlet, has certain distance between the two-stage bluff body, and the two-stage bluff body is coniform.
Constituting of bluff body gasification point firearm: the bar cavities of one-level bluff body one end constitutes the high-pressure blast passage, and high-pressure blast sprays from the bluff body front opening; Hydraulic oil oil pipe and compressed air hose are positioned at bar portion inner chamber and make hydraulic oil oil pipe spray orifice and the compressed air hose spout is communicated with the oil gas mixing chamber that is positioned at their front ends, and hydraulic oil is mixed at the oil gas mixing chamber with compressed air; Oil gun is made of compressed air hose, hydraulic oil oil pipe and oil gas mixing chamber; Many oil gas mixing tubes of oil gun spout connection and oil gas mixing tube front end have the igniting spout.
When the little oil gas igniter of bluff body extend into when lighting a fire in the sleeve pipe of one-level combustion chamber, oil flame sprays from the air channel, bottom of conical surface bluff body, a wind breeze airflow is through behind the bluff body and oily flame interflow, and behind bluff body, form first high temperature gases recirculating district, make a wind breeze airflow catch fire and burning is strengthened.The breeze airflow of one-level combustion chamber catches fire strongly, help the subsequent stages combustion chamber fire burns.Behind the secondary bluff body, form second high temperature gases recirculating district.The two-stage bluff body segment distance of being separated by, it is also more reasonable to act on.Because when igniting, the secondary bluff body places thermal-flame, adopts high-temperature and wear-proof, and this moment, the secondary bluff body also was a thermal store, helps flowing through its catching fire and burn of breeze airflow more.
The fluoran stream surface cone-apex angle of one-level bluff body is 15 °～50 °, and the fluoran stream surface cone-apex angle of secondary bluff body is 20 °～60 °.
The utility model constitutes multistage pulverized coal combustor by multistage sleeve pipe mode, and wherein, to be the one-level combustion chamber increase gradually to the pipe diameter of final-stage combustion chamber from elementary.Be socket connection between the multistage sleeve pipe.
In elementary power transportation pipe before being the one-level combustion chamber pulverized coal concentrator is set in the utility model, before it was positioned at the one-level combustion chamber, pulverized coal concentrator was shaped as circulus, had the conical surface by undergauge behind the forward direction.When wind breeze airflow through conveyance conduit, make primary wind and powder be divided into deep or light two strands of air-flows, concentrated phase is entered the one-level combustion chamber, lightly enters secondary combustion chamber mutually.Oil gun flame tangentially and with the eddy flow state enters one-level (dense powder) combustion chamber, contact with the high-temperature gasification combustion flame in the one-level combustion chamber earlier through the dense phase pulverized coal air-flow after the concentrating and separating, in fully contacting with thermal-flame and mixing strongly, pulverized coal particle in the primary wind and powder is rapidly heated, disintegration, burning rapidly in the one-level combustion chamber immediately, the primary wind and powder air-flow that does not enter the one-level combustion chamber is except that cooling off the one-level drum outer wall, enter secondary (light powder) combustion chamber, mixing the back with dense powder flame is lighted, burning capacity is amplified step by step, thereby reduced the required initial ignition energy of coal dust firing significantly, lighted a large amount of coal dusts, gone out the stable combustion flame of interruption-forming at burner with less energy, significantly reduce the required fire ignition energy of coal dust firing, realized that the coal dust classification lights, amplified step by step, having reached the purpose of the acceleration coal dust firing of a little fighting, light a large amount of coal dusts with the fuel consume of trace, replace oil with coal, kerosene mixes right, satisfies boiler and opens, stop and the requirement of low-load combustion-stabilizing.Three grades of combustion chambers and burner housing form one, and the entrance point of shell is connected with powder feeding pipes, and is simple in structure.
The utility model start-up burner can be used as the main burner operation after finishing ignition of the boiler, system is simple, has realized that start-up burner and main burner are integrated.
In sum, the utility model start-up burner can be when boiler cold-state starts direct firing coal-dust, when the boiler ultra-low load, have steady combustion ability.Can be used for anthracite and low-volatile coal, (10～150kg/h) light a large amount of coal dust (2～5t/h) with micro-oil.The boiler cold-state starting ignition is compared with conventional oil gun, but for the general fuel-economizing of anthracite more than 85%.Because amount of fuel is small, does not influence putting into operation of electric cleaner after the igniting, is beneficial to environmental protection, and is practical.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a bluff body gasification point firearm structural representation in the utility model.
Among the figure, 1, wind powder feeding pipes, 2, the start-up burner shell body, 3, ring-type pulverized coal concentrator, 4, one-level combustion chamber sleeve pipe, 5, secondary combustion chamber's sleeve pipe, 6, one-level bluff body, 7, secondary bluff body, 8, one-level bluff body bar portion, 9, the high-pressure air hose joint, 10, compressed air pipe joint, 11, high-pressure oil pipe joint, 12, the one-level bluff body withdraws from the chamber, 13, withdraw from the chamber flange; 14, burner flange; 15, one-level combustion chamber fixed head; 16, secondary combustion chamber's fixed head; 17, secondary bluff body fixed head; 18, burner outlet portion heat-resistant piece; 19, hydraulic oil oil pipe; 20, compressed air hose; 21, compressed air spout; 22, high-pressure blast passage; 23, oil gas mixing tube; 24, igniting spout, 25, the oil gas mixing chamber, 26, oil gun.
The specific embodiment
In conjunction with the accompanying drawings the utility model embodiment is illustrated:
As shown in Figure 1, this embodiment of the utility model start-up burner adopts three grades of sleeve pipes to constitute three grades of combustion chambers, elementary (one-level) combustion chamber diameter minimum, amplify step by step afterwards, power transportation pipe is provided with pulverized coal concentrator 3, and it is a circulus, have by after the conical surface of undergauge forward.Be provided with the two-stage bluff body,, in first order bluff body 6, be provided with the gasification of fuel oil igniter with reference to Fig. 2, constitute bluff body gasification point firearm, bluff body one end is a hatch frame, and the bar cavities of this bluff body one end constitutes high-pressure blast passage 22, and high-pressure blast sprays from the bluff body front opening; Hydraulic oil oil pipe 19 and compressed air hose 20 are positioned at bar portion inner chamber and make hydraulic oil oil pipe spray orifice and compressed air hose spout 21 is communicated with the oil gas mixing chamber 25 that is positioned at their front ends, and hydraulic oil is mixed at the oil gas mixing chamber with compressed air; Oil gun 26 is made of compressed air hose 20, hydraulic oil oil pipe 19 and oil gas mixing chamber 25; Many oil gas mixing tubes of oil gun spout connection 23 and oil gas mixing tube front end have igniting spout 24.Bar portion 8 rear ends of one-level bluff body have high-pressure air hose joint 9, compressed air pipe joint 10, hydraulic oil oil connection 11.Hydraulic oil and compressed air mix at oil gas mixing chamber 25, are ejected to oil gas mixing tube 23 by oil gun 26 spouts, and in the place's ejection of igniting spout and through the combustion of sparking mounted point, high-pressure blast plays atomizing and oxygenating effect to gas mixture.The one-level bluff body is scalable moving structure, can stretch in burner, thereby can suitably adjust ignition location, also can light a fire finish after, it is withdrawed from the one-level combustion chamber, prevent igniter wearing and tearing, and help normal operation.In a wind powder feeding pipes, the one-level bluff body is set and withdraws from chamber 12.In three grades of combustion chambers of start-up burner, near the burner nozzle place, the secondary bluff body is set, has a segment distance between one-level bluff body and the two-stage bluff body, the two-stage bluff body is coniform, the fluoran stream surface cone-apex angle of one-level bluff body is 15 °～50 °, and the fluoran stream surface cone-apex angle of secondary bluff body is 20 °～60 °.
Claims (7)
1. two-stage bluff body tiny-oil ignition device, it is characterized in that: adopt the above multistage sleeve pipe mode of two-stage or two-stage to constitute composite chamber, be provided with the two-stage bluff body, be provided with the gasification of fuel oil igniter and constitute bluff body gasification point firearm in one-level bluff body (6), the one-level bluff body is for can and having the bar portion (8) of cavity structure at the elastic moving structure of burner at the one end; It is in the final-stage combustion chamber that secondary bluff body (7) is arranged on burner outlet.
2. two-stage bluff body tiny-oil ignition device according to claim 1 is characterized in that: one-level bluff body (6) and secondary bluff body (7) are coniform.
3. two-stage bluff body tiny-oil ignition device according to claim 1 and 2 is characterized in that: the fluoran stream surface cone-apex angle of one-level bluff body is 15 °～50 °.
4. two-stage bluff body tiny-oil ignition device according to claim 1 and 2 is characterized in that: the fluoran stream surface cone-apex angle of secondary bluff body is 20 °～60 °.
5. two-stage bluff body tiny-oil ignition device according to claim 1 is characterized in that: pulverized coal concentrator (3) is set in the power transportation pipe, and before pulverized coal concentrator (3) was positioned at the one-level combustion chamber, it was a circulus, has the conical surface by undergauge behind the forward direction.
6. two-stage bluff body tiny-oil ignition device according to claim 1 is characterized in that: the multistage sleeve pipe that constitutes composite chamber increases to the final stage diameter gradually from elementary, is plug in construction between the multistage sleeve pipe.
7. two-stage bluff body tiny-oil ignition device according to claim 1, it is characterized in that: the bar cavities of one-level bluff body (6) one ends constitutes high-pressure blast passage (22), hydraulic oil oil pipe (19) and compressed air hose (20) are positioned at bar portion inner chamber and make hydraulic oil oil pipe spray orifice and compressed air hose spout (21) is communicated with the oil gas mixing chamber (25) that is positioned at their front ends, and oil gun (26) is made of compressed air hose (20), hydraulic oil oil pipe (19) and oil gas mixing chamber (25); Many oil gas mixing tubes of oil gun spout connection (23) and oil gas mixing tube front end have igniting spout (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200914499U CN201093529Y (en) | 2007-08-10 | 2007-08-10 | Two-stage blunt body minim oil lighter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200914499U CN201093529Y (en) | 2007-08-10 | 2007-08-10 | Two-stage blunt body minim oil lighter |
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| Publication Number | Publication Date |
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| CN201093529Y true CN201093529Y (en) | 2008-07-30 |
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| CNU2007200914499U Expired - Fee Related CN201093529Y (en) | 2007-08-10 | 2007-08-10 | Two-stage blunt body minim oil lighter |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413659B (en) * | 2008-11-07 | 2010-06-16 | 浙江大学 | External combustion type micro-oil ignition and ultra-low load steady fire coal powder combustor |
| CN101782239A (en) * | 2010-03-19 | 2010-07-21 | 艾佩克斯科技(北京)有限公司 | Oil-saving ignition method for fault coal and pulverized coal burner applying method |
| CN101403497B (en) * | 2008-11-12 | 2010-10-06 | 哈尔滨工业大学 | Micro-oil ignition rotational flow breeze combustion device for preventing slag bonding of primary combustion chamber |
| CN101696801B (en) * | 2009-10-22 | 2011-02-16 | 中国计量学院 | Little oil burner of double-sided ignition combination blunt body |
| CN102374528A (en) * | 2010-08-16 | 2012-03-14 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN102913949A (en) * | 2012-11-11 | 2013-02-06 | 扬州大学 | Tiny-oil ignition device of pulverized coal burner |
| CN103353112A (en) * | 2012-10-10 | 2013-10-16 | 北京巴布科克·威尔科克斯有限公司 | Concentrated pulverized coal turbulent burner with bluff body stable burning device |
| CN107013915A (en) * | 2017-05-27 | 2017-08-04 | 上海锅炉厂有限公司 | A kind of oil-minimum start-up burner suitable for station boiler |
| CN107166383A (en) * | 2017-06-29 | 2017-09-15 | 大唐贵州兴仁发电有限公司 | A kind of oxygen-enriched few-oil ignition system of boiler |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
| CN113757656A (en) * | 2021-09-14 | 2021-12-07 | 武汉华清环保科技有限公司 | Flameless combustor with combustion stabilizing device |
-
2007
- 2007-08-10 CN CNU2007200914499U patent/CN201093529Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413659B (en) * | 2008-11-07 | 2010-06-16 | 浙江大学 | External combustion type micro-oil ignition and ultra-low load steady fire coal powder combustor |
| CN101403497B (en) * | 2008-11-12 | 2010-10-06 | 哈尔滨工业大学 | Micro-oil ignition rotational flow breeze combustion device for preventing slag bonding of primary combustion chamber |
| CN101696801B (en) * | 2009-10-22 | 2011-02-16 | 中国计量学院 | Little oil burner of double-sided ignition combination blunt body |
| CN101782239A (en) * | 2010-03-19 | 2010-07-21 | 艾佩克斯科技(北京)有限公司 | Oil-saving ignition method for fault coal and pulverized coal burner applying method |
| CN102374528A (en) * | 2010-08-16 | 2012-03-14 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN102374528B (en) * | 2010-08-16 | 2014-01-01 | 烟台龙源电力技术股份有限公司 | Internal-combustion burner and method for improving internal combustion efficiency of internal-combustion burner |
| CN103353112A (en) * | 2012-10-10 | 2013-10-16 | 北京巴布科克·威尔科克斯有限公司 | Concentrated pulverized coal turbulent burner with bluff body stable burning device |
| CN102913949A (en) * | 2012-11-11 | 2013-02-06 | 扬州大学 | Tiny-oil ignition device of pulverized coal burner |
| CN107013915A (en) * | 2017-05-27 | 2017-08-04 | 上海锅炉厂有限公司 | A kind of oil-minimum start-up burner suitable for station boiler |
| CN107166383A (en) * | 2017-06-29 | 2017-09-15 | 大唐贵州兴仁发电有限公司 | A kind of oxygen-enriched few-oil ignition system of boiler |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
| CN111023148B (en) * | 2020-01-14 | 2024-06-07 | 薛芳 | Adjustable screw type multi-stage oil-free coal powder igniter |
| CN113757656A (en) * | 2021-09-14 | 2021-12-07 | 武汉华清环保科技有限公司 | Flameless combustor with combustion stabilizing device |
| CN113757656B (en) * | 2021-09-14 | 2024-02-02 | 武汉华清环保科技有限公司 | Flameless burner with combustion stabilizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LUOYANG TIANHE COMBUSTION TECHNOLOGIES CO., LTD. Free format text: FORMER NAME: LUOYANG BLAZE ENGINEERING TECHNICAL CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 471003 intersection of West Ling Bo road and Huaxia Road, Luoyang hi tech Development Zone, Henan Patentee after: Luoyang Tianhe Combustion Technology Co., Ltd. Address before: 471003 intersection of West Ling Bo road and Huaxia Road, Luoyang hi tech Development Zone, Henan Patentee before: Luoyang Blaze Engineering Technical Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080730 Termination date: 20110810 |