CN201740022U - Eddy atomizing oil combustor for boilers - Google Patents
Eddy atomizing oil combustor for boilers Download PDFInfo
- Publication number
- CN201740022U CN201740022U CN2010202182764U CN201020218276U CN201740022U CN 201740022 U CN201740022 U CN 201740022U CN 2010202182764 U CN2010202182764 U CN 2010202182764U CN 201020218276 U CN201020218276 U CN 201020218276U CN 201740022 U CN201740022 U CN 201740022U
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- China
- Prior art keywords
- oil
- eddy current
- combusting
- boiler
- combustion chamber
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- 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.)
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Abstract
The utility model discloses an eddy atomizing oil combustor for boilers, which comprises an oil combusting chamber. The front end of the oil combusting chamber is provided with an oil spraying nozzle, which is connected with a duct leading mixed air currents into the oil combusting chamber; one end of the duct is connected with an eddy mixer which includes a pre-mixing chamber and an eddy-mixing chamber; the eddy-mixing chamber is provided with at least one or more than one isolation plates with circulating holes; the pre-mixing chamber is communicated with the duct leading mixed air currents into the oil combusting chamber; an oil combusting channel connected with the pre-mixing chamber is provided inside the eddy-mixer and the surface of the eddy-mixer is embedded with the oil spraying nozzle connected with the oil combusting channel and a compressed-air spraying nozzle connected with the pre-mixing chamber. The eddy atomizing oil combustor of the utility model optimizes the atomizing effect of combustive oil and the combusting conditions of the combusting chamber as well, for instance, the heat and strength, therefore, combusting rate is increased and the combusting oil is maximally explored. In addition, the combustor of the utility does not require much on the oil and consumes less; the oil and gas spraying nozzles are not prone to be clogged, therefore, making the combustor even consume low quality oils.
Description
[technical field]
The utility model relates to a kind of oil burner, particularly a kind of boiler eddy current atomization oil burner.
[background technology]
Burner is to make fuel and air mix the device of ejection burning in a certain way, and it is the key device of boiler, because the heat energy that the heat that boiler absorbs derives from burner fully to be produced.Burner can be divided into coal burner, oil burner and gas burner by its employed fuel, and wherein, the fuel of oil burner is fuel oil, fuel oil is the liquid fuel that a kind of boiling point always is lower than ignition point, so the burning of fuel oil is always carried out under gaseous state.Behind the oil droplet spirt combustion chamber that fuel oil forms after atomizing, burned indoor high-temperature flue gas heats, oil gas behind the heating and gasifying and the air formation flame that burns that meets.Droplet diameter is more little, and the burning of oil droplet is faster.Existing boiler oil burner generally all is to utilize the atomized oil gun nozzle that fuel oil is carried out mechanical atomization, utilizes the high pressure of fuel oil to force oil stream by the tangential conduit in the spout exactly, forms high-speed jet and enters the combustion chamber from spout rotation ejection.Make oil stream in the rapid radial diffusion of outlet owing to rotate the centrifugal force that forms, make oil stream clash into, mix, impel oil droplet to tear refinement and form oil, Air mixing body, improve efficiency of combustion with this with ambient air with the effect of entrainmenting that high-speed jet produces jointly.Above-mentioned oil burner burn-off rate generally can reach about 95%, but required oil pressure is generally 3～5 MPas, and needs high-pressure oil pump to be used.Adding steam that also has or compressed air are strengthened atomizing effect with the raising burn-off rate, but effect is unsatisfactory.
[utility model content]
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of boiler eddy current atomization oil burner is provided, it need not by high-pressure oil pump and baroque eddy flow spout, just can make fuel oil and compressed air bump form the mixture of uniform atomizing, thereby the raising burn-off rate is to reach desirable combustion efficiency.
The purpose of this utility model is achieved in that it comprises that the oil burner backplate surrounds the oil combustion chamber of formation, the afterbody of oil combustion chamber offers the high-temperature flue gas outlet, front portion in the oil combustion chamber is provided with the oil gun nozzle, its improvements are: the oil gun nozzle is the uncovered cylinder-shaped shower nozzle with many spray orifices of an end, the opening end of oil gun nozzle is connected with the mixed airflow conduit that stretches in the oil combustion chamber, and the other end of mixed airflow conduit is connected with vortex mixer; Be provided with premixer and eddy current mixing chamber in the vortex mixer, the dividing plate of band opening more than is set in the eddy current mixing chamber, the premixer is connected with the mixed airflow conduit through the eddy current mixing chamber; Offer the fuel gallery that is connected with the premixer in the vortex mixer, be nested with fuel nozzle that is connected with the fuel gallery and the compressed-air atomizer that is connected with the premixer on the surface of vortex mixer respectively;
In the above-mentioned boiler eddy current atomization oil burner, the burning torch, the adapter of burning air distribution, the flame detecting probe that stretch in the oil combustion chamber are installed on the described oil burner backplate take over;
In the above-mentioned boiler eddy current atomization oil burner, described oil burner backplate is provided with the on-site-inspection hole that is communicated with oil combustion chamber;
In the above-mentioned boiler eddy current atomization oil burner, the inwall of described oil burner backplate is provided with refractory insulating layer;
In the above-mentioned boiler eddy current atomization oil burner, the refractory temperature of described refractory insulating layer is 3000 ℃;
In the above-mentioned boiler eddy current atomization oil burner, the ejection end of described oil gun nozzle is the semi-round ball structure, and spray orifice is with the radial ejection end that is laid in;
In the above-mentioned boiler eddy current atomization oil burner, described oil gun nozzle is made by heat resisting steel;
In the above-mentioned boiler eddy current atomization oil burner, the spout aperture on described fuel nozzle and the compressed-air atomizer and the capacity of burner are complementary;
In the above-mentioned boiler eddy current atomization oil burner, the cross section of described oil combustion chamber is circle or rectangular configuration;
In the above-mentioned boiler eddy current atomization oil burner, the cross section of described eddy current mixing chamber is a circular configuration.
Than existing boiler oil burner, the beneficial effects of the utility model are: the eddy current effect of utilizing compressed air and oil droplet to form by the labyrinth type dividing plate at a high speed, make oil droplet and compressed air multiple impact form evenly vaporific mixture, go out by special oil gun nozzle ejection and to carry out reboil bubble atomizing, make the further refinement of oil droplet, in oil burner, burn at last, the effect of fuel-oil atmozation and the burning conditions such as calorific intensity of combustion chamber have been optimized, efficiency of combustion can reach more than 99.9%, and fuel oil is played a role to greatest extent; Oil pressure just can meet the demands more than 0.2 MPa, does not need high-pressure oil pump; Oil, the gas blowout mouth is all bigger, and the difficult obstruction that is in operation can adapt to relatively poor oil product; And this burner volume is little, in light weight, is highly suitable for boiler tiny-oil ignition system.
[description of drawings]
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is the structural representation of boiler eddy current atomization oil burner
Among the figure: 10, oil combustion chamber; 11, high-temperature flue gas outlet; 12, oil burner backplate; 13, refractory insulating layer; 14, flame detecting probe is taken over; 15, the burning air distribution is taken over; 16, burning torch; 17, on-site-inspection hole; 20, oil gun nozzle; 21, spray orifice; 23, mixed airflow conduit; 30, vortex mixer; 31, eddy current mixing chamber; 311, dividing plate; 312, opening; 32, premixer; 321, compressed-air atomizer; 33, fuel gallery; 331, fuel nozzle.
[specific embodiment]
As shown in Figure 1, boiler eddy current atomization oil burner of the present utility model mainly comprises nozzle, vortex mixer 31, oil combustion chamber 10 and fuel oil, air, air distribution, igniting, control, protection system etc.Oil combustion chamber 10 encloses 12 by the oil burner backplate and closes and form, and the afterbody of oil combustion chamber 10 offers high-temperature flue gas outlet 11, and the front portions in the oil combustion chamber 10 are provided with special oil gun nozzle 20.Oil gun nozzle 20 is made by heat resisting steel, oil gun nozzle 20 is the cylinder-shaped shower nozzle of the uncovered band spray orifice 21 of an end, the ejection end of oil gun nozzle 20 is the semi-round ball structure, spray orifice 21 is with the radial ejection end that is laid in, and the opening end of oil gun nozzle 20 is connected with the mixed airflow conduit 23 that stretches in the oil combustion chamber 10, and the other end of mixed airflow conduit 23 is connected with vortex mixer 30.Be provided with premixer 32 and eddy current mixing chamber 31 in the vortex mixer 30, be provided with the dividing plate 311 of band opening 312 more than in the eddy current mixing chamber 31, dividing plate 311 is separated into the labyrinth type minor air cell with whole eddy current mixing chamber 31; Offer the fuel gallery 33 that is connected with premixer 32 in the vortex mixer 30, be nested with fuel nozzle 331 that is connected with fuel gallery 33 and the compressed-air atomizer 321 that is connected with premixer 32 on the surface of vortex mixer 30 respectively.The center line of high-temperature flue gas outlet 11, oil combustion chamber 10, oil gun nozzle 20, mixed airflow conduit 23, eddy current mixing chamber 31 and premixer 32 is on same axis, and connection successively.The flame detecting probe adapter 14, burning air distribution adapter 15, the burning torch 16 that stretch in the oil combustion chamber 10 are installed on oil burner backplate 12, make oil combustion chamber 10 when accepting vaporific oil, gas mixture, can organize effective combustion process by air distribution, igniting, cooling etc.; For the ease of observing, also the on-site-inspection hole 17 that is communicated with oil combustion chamber 10 can be set on oil burner backplate 12.And, in oil combustion chamber 10, make refractory insulating layer 13 with fire-resistant, insulation material in order further to improve efficiency of combustion, it is arranged on the inwall of oil burner backplate 12.Preferably, the refractory temperature of refractory insulating layer 13 is 3000 ℃.In combustion process, refractory insulating layer 13 feedbacks radiant heat when absorbing the combustion heat, forms very high calorific intensity in oil combustion chamber 10, makes the rapid gasification, and combustion of small oil droplet.
This novel boiler eddy current atomization oil burner is installed on the above industrial coal powder boiler of 130T/H of Generator Set (also can on other need the equipment of hot cigarette, use), fuel oil and compressed air are under the effect of control system, by fuel nozzle 331, fuel gallery 33 and compressed-air atomizer 321 enter simultaneously in the premixer 32 and mix, mixed air-flow continues to move ahead and passes through a plurality of minor air cells of vortex mixer 31 successively, air velocity is very fast in this process, fuel oil and the compressed air refinement that runs foul of each other under the effect of turbulent flow, big slightly oil droplet is because the factor of deadweight falls into eddy current mixing chamber 31, air in eddy current mixing chamber 31 is because there is the effect of entrainmenting of middle high velocity air to form irregular eddy current, oil droplet continues the collision refinement with air under the effect of swirl gas, and imports the high-speed mixing air-flow continue to move ahead and finished an eddy current atomization process like this under the effect of entrainmenting of high velocity air.Reached very desirable effect through fuel oil after a plurality of eddy current atomization processes and compressed-air actuated mixed aerosol.Mixed airflow after the atomizing enters oil gun nozzle 20 through the mixed airflow conduit, and enters oil combustion chamber 10 ignition from radial spray orifice 21, and oil combustion chamber 10 has ignition system, monitoring system, burning blowing system.Adjust the back burn-off rate through control and reach more than 99%, temperature is at the above high-temperature flue gas importing boiler coal-ash combustor of 1500 degree, and coal dust firing indoor breeze airflow moment reaches ignition temperature and catches fire rapidly.
The eddy current atomization of the boiler eddy current atomization oil burner intermediate fuel oil that this is novel is to utilize aerodynamic characteristic to atomize, oil, gas blowout mouth just play an aperture of adjusting and limited flow effect, so be not easy to stop up, the size of spout is relevant with the parameter and the pressure of the capacity of burner, oil product, preferably, oil, gas blowout mouth are generally more than 0.5 millimeter.In addition, the cross section of oil combustion chamber and eddy current mixing chamber is best with the circular configuration, because circular structure has special stability, it is not yielding to can be good at discharging the stress that thermal expansion forms, and uses more durable.And for the setting of labyrinth type minor air cell quantity, then with the relating to parameters of oil product, general light diesel is more than 3 grades, and heavy diesel fuel is to get final product about 5 grades.
Described above only is preferred embodiment of the present utility model; above-mentioned specific embodiment is not to restriction of the present utility model; the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.
Claims (10)
1. boiler eddy current atomization oil burner, it comprises that the oil burner backplate surrounds the oil combustion chamber of formation, the afterbody of oil combustion chamber offers the high-temperature flue gas outlet, front portion in the oil combustion chamber is provided with the oil gun nozzle, it is characterized in that: the oil gun nozzle is the cylinder-shaped shower nozzle of the uncovered band spray orifice of an end, the opening end of oil gun nozzle is connected with the mixed airflow conduit that stretches in the oil combustion chamber, and the other end of mixed airflow conduit is connected with vortex mixer; Be provided with premixer and eddy current mixing chamber in the vortex mixer, be provided with the dividing plate of band opening more than in the eddy current mixing chamber, the premixer is connected with the mixed airflow conduit through the eddy current mixing chamber; Offer the fuel gallery that is connected with the premixer in the vortex mixer, be nested with fuel nozzle that is connected with the fuel gallery and the compressed-air atomizer that is connected with the premixer on the surface of vortex mixer respectively.
2. boiler eddy current atomization oil burner according to claim 1 is characterized in that: the burning torch, the adapter of burning air distribution, the flame detecting probe that stretch in the oil combustion chamber are installed on the oil burner backplate take over.
3. boiler eddy current atomization oil burner according to claim 2 is characterized in that: the oil burner backplate is provided with the on-site-inspection hole that is communicated with oil combustion chamber.
4. boiler eddy current atomization oil burner according to claim 1, it is characterized in that: the inwall of oil burner backplate is provided with refractory insulating layer.
5. boiler eddy current atomization oil burner according to claim 4 is characterized in that: the refractory temperature of refractory insulating layer is 3000 ℃.
6. boiler eddy current atomization oil burner according to claim 1 is characterized in that: the ejection end of oil gun nozzle is the semi-round ball structure, and spray orifice is with the radial ejection end that is laid in.
7. according to claim 1 or 6 described boiler eddy current atomization oil burners, it is characterized in that: the oil gun nozzle is made by heat resisting steel.
8. boiler eddy current atomization oil burner according to claim 1 is characterized in that: the spout aperture on fuel nozzle and the compressed-air atomizer and the capacity of burner are complementary.
9. boiler eddy current atomization oil burner according to claim 1 is characterized in that: the cross section of oil combustion chamber is circle or rectangular configuration.
10. boiler eddy current atomization oil burner according to claim 1 is characterized in that: the cross section of eddy current mixing chamber is a circular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182764U CN201740022U (en) | 2010-06-08 | 2010-06-08 | Eddy atomizing oil combustor for boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182764U CN201740022U (en) | 2010-06-08 | 2010-06-08 | Eddy atomizing oil combustor for boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740022U true CN201740022U (en) | 2011-02-09 |
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ID=43555297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202182764U Expired - Fee Related CN201740022U (en) | 2010-06-08 | 2010-06-08 | Eddy atomizing oil combustor for boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113557389A (en) * | 2019-03-15 | 2021-10-26 | 猪野贵行 | Multi-pipe type through-flow boiler |
-
2010
- 2010-06-08 CN CN2010202182764U patent/CN201740022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113557389A (en) * | 2019-03-15 | 2021-10-26 | 猪野贵行 | Multi-pipe type through-flow boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20120608 |