CN201599792U - W-flame micro-oil ignition burner - Google Patents
W-flame micro-oil ignition burner Download PDFInfo
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- CN201599792U CN201599792U CN2010201235567U CN201020123556U CN201599792U CN 201599792 U CN201599792 U CN 201599792U CN 2010201235567 U CN2010201235567 U CN 2010201235567U CN 201020123556 U CN201020123556 U CN 201020123556U CN 201599792 U CN201599792 U CN 201599792U
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- powder feeding
- feeding pipes
- flame
- little oil
- oil
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Abstract
The utility model provides a W-flame micro-oil ignition burner comprising a first powder conveying pipeline, a second powder conveying pipeline and a switching door, wherein the first powder conveying pipeline is fixedly arranged on a cyclone dense and dilute phase burner; the second powder conveying pipeline is arranged on the first powder conveying pipeline; the switching door is arranged at the connecting part between the first powder conveying pipeline and the second powder conveying pipeline; the second powder conveying pipeline is internally provided with a micro-oil burning device; an outlet of the micro-oil burning device is provided with a flame holder and a flame stabilizing cover which are communicated with each other in sequence; and the flame stabilizing cover is connected with a primary burning pipe, and a secondary burning pipe is arranged at a certain distance behind the primary burning pipe. The W-flame micro-oil ignition burner solves the technical problems that the existing ignition burner has large oil consumption in the process of ignition and high cost, and has the advantages of simple structure, high oil-saving rate and low cost.
Description
Technical field
The utility model relates to start-up burner, is specifically related to a kind of W flame little oil burner, and it can realize that in ignition process oil supply is less, efficiency of combustion is high.
Background technology
Rich coal resources in China, but coal is changeable, ature of coal is relatively poor, and breeze airflow is difficult to catch fire and after-flame.Power industry is main energy sources with coal, and a large amount of power plant use anthracite, colm, meager coal, and its oil consumption is much higher than the power plant that uses brown coal, bituminous coal.
At present, during the black furnace ignition trigger of thermal power plant, generally adopt the large-scale oil combustion device heating coal dust burner hearth that is arranged in the overfiren air port, continue to heat a few hours, burner hearth is all reached a high temperature everywhere.Drop into coal dust firing then, and mix and burn certain load.Progressively remove oil at last again.The startup oil consumption of this method is very big, when the total specified fuel consumption of oil gun is about the boiler rated load in the oil combustion device 30% of calory burning.
In recent years, the coal in China state of supply worsened, and the power plant is forced to use ash content height, colm that calorific value is low, burning stable, reliability is relatively poor, and high load capacity fire extinguishing phenomenon often takes place.In order to stablize the stove internal combustion, often throw the combustion-supporting steady combustion of oil, therefore, need to consume a large amount of combustion-supporting oil.And the consumption of combustion-supporting oil is much larger than starting oil consumption.
According to statistics, nearly 15,000,000,000 yuans of the startup oil consumption in national thermal power plant every year and combustion-supporting oil consumption expense, and along with domestic product oil price continue raise up, this expense is also continuing to increase, and the production cost of electric power enterprise is constantly risen.
From the eighties in last century, the igniting, the steady burning burner that reduce oil consumption come out successively.The small oil gun start-up burner, coal adaptability is wide, but oil consumption is still higher.The plasma non-oil ignition technology is only applicable to brown coal, bituminous coal, and the limitation of coal adaptability is bigger.
Application number is " 200510049732.0 "; Chinese utility model patent, and name of patent application is: " directly firing coal-dust burner ", application number is " 200320129380.6 "; Be " a kind of micro oil, gas firing coal-dust burner " with name of patent application, the burner application that application number is introduced for the utility model patent of " 200320103151.7 " is in using anthracite, colm, meager coal unit, and effect is undesirable.W flame burns anthracitic boiler as special, because its combustion system and burner structure are special and use anthracitic characteristics, does not have otherwise effective technique to use to realize that few-oil ignition starts so far.
The utility model content
The purpose of this utility model is to provide a kind of W flame little oil burner, and it is big mainly to have solved existing start-up burner fuel consumption in ignition process, the technical problem that cost is high.
The utility model is as follows at the technical solution of above-mentioned technical problem:
A kind of W flame little oil burner, comprise first powder feeding pipes that is fixedly set on the dense dilute phase burner of whirlwind, its special character is: described first powder feeding pipes is provided with second powder feeding pipes, and described second powder feeding pipes and the first powder feeding pipes junction are provided with switches door; Be provided with little oil combustion device in described second powder feeding pipes; The exit of described little oil combustion device is provided with flame holder, and the exit of described flame holder is provided with steady combustion cover; Described flame holder is connected with steady combustion cover; Described steady combustion cover is connected with the one-level combustion tube; The described second powder feeding pipes caliber taper that begins from one-level combustion tube exit shrinks and to diminish, and forms knuckle at the inwall of the second powder feeding pipes contraction place; Described secondary firing pipe is arranged on the straight section after the second powder feeding pipes caliber shrinks.
The above little oil combustion device is with respect to axial setting of second powder feeding pipes or oblique setting.
The inwall of the above second powder feeding pipes is provided with venturi and concentrates ring, and described venturi concentrates ring and is arranged at the porch of flame holder breeze airflow, so that the breeze airflow that enters in the steady combustion cover is the dense phase pulverized coal air-flow.
The above steady combustion cover is good with the mouse cage cover.
The lower port of the above one-level combustion tube and secondary firing pipe, and the inwall of second powder feeding pipes outlet is respectively arranged with furnace arch, furnace nose, to strengthen the burning of breeze airflow.
The outer wall in the above one-level combustion tube, secondary firing pipe and the second powder feeding pipes exit is respectively equipped with the wall temperature measurement thermocouple, can in time monitor burner wall temperature situation of change, the power of little oil combustion device, air film air quantity change according to wall temperature to be regulated, so that each high-temperature resistant tube is in the safe temperature scope.
The periphery of the above second powder feeding pipes is provided with surrounding air, in order to replenish coal dust firing oxygen amount, while cooled nozzle.
Advantage of the present utility model is as follows:
1. rate of economizing gasoline height, cost is low.
The W flame little oil burner that the utility model provides switches door by being provided with at powder feeding pipes, can make breeze airflow according to different path flow as required, breeze airflow is imported oil combustion device on first powder feeding pipes, can realize that few-oil ignition is combustion-supporting, thereby reduced the consumption of combustion-supporting oil, reduced cost.
2. simple in structure, be easy to realize.The utility model provides W flame little oil burner, only needs first powder feeding pipe is offered the switching door, and switches door connection second powder feeding pipe by this, can realize that breeze airflow imports in the passage of this tiny-oil ignition device in ignition process.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is the structural representation of another embodiment of the utility model.
Description of reference numerals is as follows:
The dense dilute phase burner of 1-whirlwind, 2-first powder feeding pipes, 3-second powder feeding pipes, the little oil combustion device of 4-, 5-flame holder, 6-surely fire cover, 7-one-level combustion tube, 8-secondary firing pipe, 9-furnace arch, furnace nose, 10-wall temperature measurement thermocouple, 21-switch door, and the 31-venturi concentrates ring.
The specific embodiment
Referring to Fig. 1, the W flame little oil burner that the utility model provides, mainly by being fixedly set in first powder feeding pipes 2 on the dense dilute phase burner 1 of whirlwind, being located at second powder feeding pipes 3 on first powder feeding pipes 2 and the switching door 21 that is provided with in the junction of first powder feeding pipes 2 and second powder feeding pipes 3 constitutes, this switchings 21 makes W flame little oil burner in ignition process the breeze airflow of first powder feeding pipes, 2 conveyings be imported second powder feeding pipes 3.Wherein in second powder feeding pipes 3, be provided with little oil combustion device 4 with its concentric.The exit of this little oil combustion device 4 is provided with flame holder 5, and the exit of flame holder 5 is provided with coupled logical squirrel-cage and surely fires cover 6.In addition, at the inwall of second powder feeding pipes 3 and be provided with venturi apart from the porch of flame holder 5 breeze airflows and concentrate ring 31, thereby make that entering the breeze airflow that squirrel-cage surely fires cover 6 is the dense phase pulverized coal air-flow.The lower end of steady combustion cover 6 is connected with one-level combustion tube 7, and these one-level combustion tube 7 back certain distances are provided with secondary firing pipe 8.Begin the contraction of second powder feeding pipes, 3 caliber tapers from one-level combustion tube 7 exits and diminish, inwall shrinks hypotenuse breeze airflow is folded to guide functions, and secondary firing pipe 8 inlets are arranged at second powder feeding pipes 3 and shrink on the straight sections of back.Wherein one-level combustion tube 7 is provided with furnace arch, furnace nose 9 respectively with the lower port place of secondary firing pipe 8, and this furnace arch, furnace nose 9 has played the guide effect of breeze airflow, can prevent effectively that combustion flame is adherent and the coking that causes.Simultaneously, the inwall in 3 outlets of second powder feeding pipes also is provided with furnace arch, furnace nose 9 with overheavy firing.
Air film wind is set: the air film airduct is arranged at the outside of second powder feeding pipes 3, and the two specifically can connect by gusset.The part that air film airduct bottom is in the circumference air port becomes the coal burner spout naturally; and be recessed in certain distance in the circumference air port; air film wind enters from the outlet of second powder feeding pipes 3 and the circular passage between the air film airduct, can the cooling protection spout not be burnt out, replenishes coal dust firing simultaneously and need the oxygen amount.Wherein the wind regime of air film wind can be realized from external world's introducing cold wind or hot blast.
Periphery at second powder feeding pipes 3 is provided with surrounding air, and the circumference air port is positioned at the coal burner spout section outside, and wind regime burning crude oil wind can further replenish coal dust firing oxygen amount, and cooled nozzle is not burnt out it simultaneously.
In order to realize real-time monitoring for the burner wall temperature, outer wall in one-level combustion tube 7, secondary firing pipe 8 and 3 outlets of second powder feeding pipes is respectively equipped with wall temperature measurement thermocouple 10, and regulate for little oil combustion device 4 power, air film air quantity, circumference air quantity according to measurement result, thereby the outlet that has guaranteed second powder feeding pipes 3 is in the safe temperature scope, has finally improved the functional reliability of W flame little oil burner.
Little oil combustion device 4 in the W flame little oil burner that the utility model provides also can be with respect to the 3 oblique settings of second powder feeding pipes, referring to Fig. 2.Other dependency structure is identical with W flame little oil burner shown in Figure 1.
Below with reference to accompanying drawing operation principle of the present utility model is described.
Referring to Fig. 1, Fig. 2, W flame little oil burner will switch door 21 and cut to second powder feeding pipes 3 in ignition process, make the breeze airflow in the powder feeding pipes 2 of winning flow into second powder feeding pipes 3.Breeze airflow in second powder feeding pipes 3 is after venturi concentrates ring 31 separation, and a part of coal dust air-flow enters the circular passage between second powder feeding pipes 3 and the one-level combustion tube 7, and small part dense phase pulverized coal air-flow enters one-level combustion tube 7 from steady combustion cover 6.The high-temperature flue gas of the flame that little oil combustion device 4 ejects behind flame holder 5 steady flames is injected in the one-level combustion tube 7, breeze airflow in the one-level of the igniting combustion tube 7, be injected in the secondary firing pipe 8 after forming the one-level combustion flame, one-level combustion tube 7 outer ring passage breeze airflows are subjected to the guide functions that is folded to that second powder feeding pipes 3 shrinks inwall in one-level combustion tube 7 exits, a part enters secondary firing pipe 8, and another part enters the circular passage between the secondary firing pipe 8 and second powder feeding pipes 3.Enter breeze airflow and the mixed combustion of one-level combustion flame in the secondary firing pipe 8, form secondary firing flame; Secondary firing flame is ejected into the breeze airflow mixed combustion that coal burner spout Duan Bingyu secondary firing pipe 8 outer ring passages come, make coal dust firing more abundant after the air film wind at coal burner spout place and surrounding air classification oxygenating, finally making coal dust firing is that main torch jet is gone into burner hearth.After the igniting of W flame little oil burner finishes, to switch door 21 and cut, and make breeze airflow all enter the dense dilute phase burner 1 of whirlwind, at this moment by first powder feeding pipes 2 to first powder feeding pipes 2, system returns to former normal condition operation, and W flame little oil burner is in stand-by state.
Claims (7)
1. W flame little oil burner, comprise first powder feeding pipes (2) that is fixedly set on the whirlwind dense dilute phase burner of son (1), it is characterized in that: described first powder feeding pipes (2) is provided with second powder feeding pipes (3), and described second powder feeding pipes (3) is provided with first powder feeding pipes (2) junction and switches door (21); Be provided with little oil combustion device (4) in described second powder feeding pipes (3); The exit of described little oil combustion device (4) is provided with flame holder (5), and the exit of described flame holder (5) is provided with steady combustion cover (6); Described flame holder (5) is connected with steady combustion cover (6); Described steady combustion cover (6) is connected with one-level combustion tube (7); Described second powder feeding pipes (3) the caliber taper that begins from one-level combustion tube (7) exit shrinks and to diminish, and forms knuckle at the inwall of second powder feeding pipes (3) contraction place; Described secondary firing pipe (8) is arranged on the straight section after second powder feeding pipes (3) caliber shrinks.
2. a kind of W flame little oil burner according to claim 1 is characterized in that: described little oil combustion device (4) axially is provided with or oblique setting with respect to second powder feeding pipes (3).
3. a kind of W flame little oil burner according to claim 1 and 2, it is characterized in that: the inwall of described second powder feeding pipes (3) is provided with venturi and concentrates ring (31), and described venturi concentrates the porch that ring (31) is arranged at flame holder (5) breeze airflow.
4. a kind of W flame little oil burner according to claim 3 is characterized in that: described steady combustion cover (5) is the mouse cage cover.
5. a kind of W flame little oil burner according to claim 4 is characterized in that: the lower port of described one-level combustion tube (7) and secondary firing pipe (8), and the inwall of second powder feeding pipes (3) outlet is respectively arranged with furnace arch, furnace nose (9).
6. a kind of W flame little oil burner according to claim 5 is characterized in that: the outer wall in described one-level combustion tube (6), secondary firing pipe (7) and second powder feeding pipes (3) exit is respectively equipped with wall temperature measurement thermocouple (10).
7. a kind of W flame little oil burner according to claim 6 is characterized in that: the periphery of described second powder feeding pipes (3) is provided with the surrounding air of the coal dust firing oxygen amount of replenishing, while cooled nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201235567U CN201599792U (en) | 2010-03-04 | 2010-03-04 | W-flame micro-oil ignition burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201235567U CN201599792U (en) | 2010-03-04 | 2010-03-04 | W-flame micro-oil ignition burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599792U true CN201599792U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201235567U Expired - Lifetime CN201599792U (en) | 2010-03-04 | 2010-03-04 | W-flame micro-oil ignition burner |
Country Status (1)
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| CN (1) | CN201599792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776028A (en) * | 2014-01-20 | 2014-05-07 | 杭州浙大天元科技有限公司 | Micro-oil ignition system and method applicable to W-type flame boiler |
| CN113310070A (en) * | 2021-06-08 | 2021-08-27 | 成都得与时文化传媒有限公司 | Intelligent lighter and control method thereof |
-
2010
- 2010-03-04 CN CN2010201235567U patent/CN201599792U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776028A (en) * | 2014-01-20 | 2014-05-07 | 杭州浙大天元科技有限公司 | Micro-oil ignition system and method applicable to W-type flame boiler |
| CN103776028B (en) * | 2014-01-20 | 2016-03-30 | 杭州浙大天元科技有限公司 | Be applicable to micro oil ignition system and the method thereof of W type flame boiler |
| CN113310070A (en) * | 2021-06-08 | 2021-08-27 | 成都得与时文化传媒有限公司 | Intelligent lighter and control method thereof |
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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: Xi'an Puhua Combustion Engineering Co., Ltd. Assignor: Zheng Pingan Contract record no.: 2012610000060 Denomination of utility model: W-flame micro-oil ignition burner Granted publication date: 20101006 License type: Exclusive License Record date: 20120511 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an Puhua Combustion Engineering Co., Ltd. Assignor: Zheng Pingan Contract record no.: 2012610000060 Denomination of utility model: W-flame micro-oil ignition burner Granted publication date: 20101006 License type: Exclusive License Record date: 20120511 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
|
| CX01 | Expiry of patent term |