CN202485026U - Oxygen injector - Google Patents
Oxygen injector Download PDFInfo
- Publication number
- CN202485026U CN202485026U CN2012200794619U CN201220079461U CN202485026U CN 202485026 U CN202485026 U CN 202485026U CN 2012200794619 U CN2012200794619 U CN 2012200794619U CN 201220079461 U CN201220079461 U CN 201220079461U CN 202485026 U CN202485026 U CN 202485026U
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- CN
- China
- Prior art keywords
- oxygen
- flange
- flue gas
- pipe
- shower nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y02E20/344—
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Abstract
The utility model discloses an oxygen injector which comprises an oxygen direct flow pipe, an oxygen guide pipe, a sprayer, a first flange and a second flange. The oxygen injector is characterized in that the oxygen guide pipe is an elbow pipe. One end of the oxygen guide pipe is connected with the oxygen direct flow pipe. The other end of the oxygen guide pipe is inserted into an air-flue gas pipeline through a side hole of the air-flue gas pipeline and connected with the sprayer; the first flange is connected with the oxygen direct flow pipe, and the second flange is connected with the side hole of the air-flue gas pipeline. The first flange is in coaxial connection with the second flange so that the oxygen direct flow pipe is concentric with the side hole of the air-flue gas pipeline, and an outlet of the oxygen guide pipe is concentric with the air-flue gas pipeline. The oxygen jet flow in the center of the air-flue gas pipeline guarantees that the oxygen and smoke can be mixed fast and evenly.
Description
Technical field
The utility model relates to a kind of oxygen injector, specifically is the device that in oxygen-enriched combustion boiler, is used for oxygen and flue gas premix.
Background technology
In China's coal fired power generation technology, a large amount of dischargings of carbon dioxide and nitrogen oxide have caused very big threat to environment.And oxygen-enriched combusting by feat of its zero-emission and with the advantage of the good connection of conventional air combustion technology, become the focus of domestic and international research.Oxygen-enriched combustion technology for combustion air, adopts flue gas recirculation to regulate rate-of flow and heat-transfer character in the burner hearth with highly purified oxo simultaneously, can obtain the CO that is rich in of high volumetric concentration
2Flue gas.And how the mixing effectively and uniformly of the flue gas in pure oxygen and the flue is had very big influence to effect of combustion; The uneven mixing of oxygen and flue gas can cause burner hearth irrational localized hyperthermia to occur; Influence coal dust after-flame degree, make burning can not stablize more and carry out fully.
The utility model content
The utility model provides a kind of oxygen injector, can be injected into pure oxygen in the flue gas of flue, and guarantee that oxygen and flue gas can mix effectively and uniformly, have avoided because oxygen and the inhomogeneous combustion instability that causes of flue gas premix.
A kind of oxygen injector of the utility model, it comprises oxygen DC tube, oxygen guide pipe, shower nozzle and first, second flange; It is characterized in that: the oxygen guide pipe is a bend pipe, and an end connects the oxygen DC tube, and the other end inserts in the smoke wind pipe through the smoke wind pipe side opening, and is connected with shower nozzle; First flange is connected with the oxygen DC tube, and second flange is connected with the smoke wind pipe side opening, and the coaxial connection of first, second flange makes oxygen DC tube and smoke wind pipe side opening concentric, and the outlet and the smoke wind pipe of oxygen guide pipe are concentric.
As the improvement of technique scheme, said smoke wind pipe side opening is perpendicular to the hole of side wall surface.
As the further improvement of technique scheme, said first, second flange outer diameter is identical, and the bolt hole position of installation is identical with size, and internal diameter is different.
As the further improvement of technique scheme, shower nozzle is the changeable type shower nozzle.
Oxygen and flue gas when the utility model has overcome oxygen-enriched combusting be owing to mix the inhomogeneous localized hyperthermia that causes and the lower problem of coal dust after-flame degree, guaranteed oxygen and flue gas fast, evenly mixing, for the industrial practice of oxygen-enriched combusting provides guarantee.
Description of drawings
Fig. 1 is the specific embodiment structural representation of the oxygen injector that provides of the utility model, in the drawings: 1. smoke wind pipe 2. smoke wind pipe side openings 3. replaceable shower nozzle 4. oxygen guide pipes 5 flanges 6. flanges 7. oxygen DC tubes
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, a kind of oxygen injector of the utility model comprises oxygen DC tube 7, oxygen guide pipe 4, shower nozzle 3, smoke wind pipe side opening 2, a pair of flange 5 and 6.Oxygen guide pipe 4 one ends are connected with shower nozzle 3, and an end is connected with oxygen DC tube 7.A flange 6 is installed on the oxygen DC tube 7, and a flange 5 is installed on the smoke wind pipe side opening 2, to guarantee after flange connects smoke wind pipe side opening 2 and oxygen DC tube 7 with one heart and the outlet and the smoke wind pipe 1 of oxygen guide pipe 4 concentric.
Said smoke wind pipe side opening is to guarantee that the oxygen injector can get into smoke wind pipe and the hole perpendicular to side wall surface of opening on the smoke wind pipe side wall surface of place can be installed with one heart.
The outlet and the smoke wind pipe of the oxygen guide pipe of oxygen injector are concentric, and oxygen is mixed with flue gas under the situation of directly not clashing into duct wall uniformly.
The selection of oxygen injector caliber is that the flow velocity when guaranteeing that oxygen gets into smoke wind pipe has the speed difference bigger with flue gas flow rate, the 2-5 that general oxygen jet speed is flue gas flow rate doubly, bigger speed difference can guarantee that oxygen and flue gas mix faster.
The replaceable shower nozzle of oxygen injector is that the oxygen guide pipe of one group of one end and oxygen injector is connected, and the other end has the little straight length in different outlets aperture, can control the mixing velocity of oxygen and flue gas through changing oxygen outlet speed.
Specify the course of work and the effect of the said oxygen injector of Fig. 1 below.
The course of work of the said oxygen injector of Fig. 1: oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Oxygen jet is at the center of smoke wind pipe; By feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
Instance 1
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length; The outlet of replaceable shower nozzle is a single hole, and the aperture is identical with the aperture of oxygen guide pipe.Oxygen jet is at the center of smoke wind pipe, and by feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length, and little straight length inside is equipped with tangential vane, and oxygen jet is rotated; The outlet of replaceable shower nozzle is a single hole, and the aperture is identical with the aperture of oxygen guide pipe.The oxygen of smoke wind pipe center rotation increased greatly and flue gas between disturbance, make that oxygen and flue gas can be rapidly and uniform mixing.
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length, and the outlet of replaceable shower nozzle is a plurality of apertures of along the circumferential direction evenly arranging.The multiply oxygen jet is at the center of smoke wind pipe, and by feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
Those skilled in the art will readily understand; The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. oxygen injector, it is characterized in that: it comprises oxygen DC tube, oxygen guide pipe, shower nozzle and first, second flange; The oxygen guide pipe is a bend pipe, and an end connects the oxygen DC tube, and the other end inserts in the smoke wind pipe through the smoke wind pipe side opening, and is connected with shower nozzle; First flange is connected with the oxygen DC tube, and second flange is connected with the smoke wind pipe side opening, and the coaxial connection of first, second flange makes oxygen DC tube and smoke wind pipe side opening concentric, and the outlet and the smoke wind pipe of oxygen guide pipe are concentric.
2. oxygen injector according to claim 1 is characterized in that said smoke wind pipe side opening is perpendicular to the hole of side wall surface.
3. oxygen injector according to claim 1 and 2 is characterized in that, said first, second flange outer diameter is identical, and the bolt hole position of installation is identical with size, and internal diameter is different.
4. oxygen injector according to claim 3 is characterized in that, shower nozzle is the changeable type shower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200794619U CN202485026U (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200794619U CN202485026U (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485026U true CN202485026U (en) | 2012-10-10 |
Family
ID=46959445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200794619U Expired - Lifetime CN202485026U (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607051A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Oxygen injector |
| CN104110694A (en) * | 2014-07-10 | 2014-10-22 | 中国神华能源股份有限公司 | Smoke conveying device and method for injecting oxygen-enriched gas into flue |
-
2012
- 2012-03-05 CN CN2012200794619U patent/CN202485026U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607051A (en) * | 2012-03-05 | 2012-07-25 | 华中科技大学 | Oxygen injector |
| CN104110694A (en) * | 2014-07-10 | 2014-10-22 | 中国神华能源股份有限公司 | Smoke conveying device and method for injecting oxygen-enriched gas into flue |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |