CN107763617B - Immersed type Fuel spray gun - Google Patents
Immersed type Fuel spray gun Download PDFInfo
- Publication number
- CN107763617B CN107763617B CN201711276517.3A CN201711276517A CN107763617B CN 107763617 B CN107763617 B CN 107763617B CN 201711276517 A CN201711276517 A CN 201711276517A CN 107763617 B CN107763617 B CN 107763617B
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- Prior art keywords
- fuel
- combustion
- channel
- atomizing
- supporting
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- 239000000446 fuel Substances 0.000 title claims abstract description 115
- 239000007921 spray Substances 0.000 title claims abstract description 75
- 238000000889 atomisation Methods 0.000 claims abstract description 54
- 239000003921 oil Substances 0.000 claims abstract description 43
- 239000000295 fuel oil Substances 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 38
- 230000000694 effects Effects 0.000 description 10
- 230000002035 prolonged effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
- F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/38—Nozzles; Cleaning devices therefor
Abstract
The invention discloses an immersed fuel spray gun, the immersed fuel spray gun comprises an oil pipe, an atomization air pipe and a combustion-supporting air pipe. The lumen of the oil pipe is a fuel channel for delivering fuel. The atomization air pipe is sleeved on the oil pipe, an atomization channel for conveying atomization gas is defined between the atomization air pipe and the oil pipe. The combustion-supporting air pipe is sleeved on the atomization air pipe, and a combustion-supporting channel for conveying combustion-supporting gas is defined between the combustion-supporting air pipe and the atomization air pipe. The combustion-supporting channel and the atomizing channel are respectively provided with a combustion-supporting air outlet and an atomizing air outlet at the same end, the fuel channel is provided with a fuel ejection outlet at one end adjacent to the atomizing air outlet, and the fuel ejection outlet is arranged towards the atomizing channel, so that fuel in the fuel channel is firstly ejected to the atomizing channel and mixed with atomizing gas, and then the gas is ejected from the atomizing air outlet. The immersed fuel oil spray gun provided by the embodiment of the invention has the advantages of lower burning loss at the front end of the spray gun, lower blocking probability of a fuel oil spray hole, longer service life and better working reliability.
Description
Technical Field
The invention relates to the nonferrous metal smelting industry, in particular to an immersed fuel oil spray gun.
Background
In pyrometallurgical equipment, a lance is typically used to feed fuel and oxidant into the furnace to effect the heating and stirring of the melt. The price of high-quality energy resources represented by natural gas is gradually increased, and the development of a novel spray gun adopting pulverized coal and heavy oil as fuels has great significance for reducing the production cost and improving the competitiveness in the colored industry. However, the abrasion of the pulverized coal injection lance is very serious, and frequent replacement of the injection lance is required, so that the operation rate of the furnace is severely deteriorated. Therefore, the spray gun using heavy oil as fuel is developed to replace the existing gas fuel spray gun and pulverized coal spray gun, which is beneficial to reducing smelting cost and improving smelting efficiency. The existing heavy oil spray gun is generally used in boilers and industrial incinerators, the outer wall of the spray gun contacts with furnace gas, and the damage phenomenon of the spray gun is not serious. However, in the pyrometallurgical equipment (bottom blowing furnace or side blowing furnace), the front end of the spray gun is required to be directly contacted with the high-temperature melt, and the working environment of the spray gun is extremely severe, so that the pipeline of the spray gun is easy to be blocked, and the service life of the spray gun is shorter.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an immersed fuel oil spray gun, which is not easy to block a pipeline when in use and has longer service life.
According to an embodiment of the invention, a submerged fuel spray gun comprises: the pipe cavity of the oil pipe is a fuel channel for conveying fuel; the atomization air pipe is sleeved on the oil pipe, and an atomization channel for conveying atomization gas is defined between the atomization air pipe and the oil pipe; the combustion-supporting air pipe is sleeved on the atomization air pipe, and a combustion-supporting channel for conveying combustion-supporting gas is defined between the combustion-supporting air pipe and the atomization air pipe; the combustion-supporting channel and the atomizing channel are respectively provided with a combustion-supporting air outlet and an atomizing air outlet at the same end; and the fuel oil channel is provided with a fuel oil ejection port at one end adjacent to the atomizing air outlet, and the fuel oil ejection port is arranged towards the atomizing channel, so that fuel oil in the fuel oil channel is firstly ejected to the atomizing channel and mixed with the atomizing gas, and the mixed gas is ejected from the atomizing air outlet.
According to the immersed fuel spray gun disclosed by the embodiment of the invention, as the fuel spray outlet on the oil pipe is arranged towards the atomizing channel of the atomizing air pipe, the combustion-supporting air pipe is sleeved outside the atomizing air pipe, so that the burning loss of the front end of the spray gun is reduced, the blocking probability of the fuel spray outlet is reduced, the service life of the spray gun is prolonged, and the working reliability of the spray gun is improved.
In some embodiments, the oil pipe is closed at one end portion adjacent to the atomized wind outlet, and the fuel ejection port is provided on a peripheral wall of the oil pipe.
Specifically, the fuel ejection openings are a plurality of, and the plurality of fuel ejection openings are evenly distributed around the axis of the oil pipe, and each fuel ejection opening is formed as an inclined opening arranged from inside to outside in a direction toward the atomized wind outlet.
In some embodiments, a plurality of guide vanes are disposed in the atomizing channel, and the plurality of guide vanes are distributed around the oil pipe.
Specifically, the radial outer end of each guide vane is attached to the inner peripheral wall of the atomization air pipe, the radial inner end of each guide vane is attached to the oil pipe, the plurality of guide vanes uniformly divide the atomizing channel into a plurality of atomizing sub-channels.
More specifically, a plurality of fuel ejection ports are arranged in one-to-one correspondence with a plurality of atomizing sub-passages.
In some embodiments, a flow divider is disposed within the combustion-supporting passage.
Specifically, the flow dividing piece is sleeved on the atomization air pipe, a plurality of first combustion-supporting sub-channels are arranged on the flow dividing piece, and the first combustion-supporting sub-channels are uniformly distributed around the atomization air pipe.
Specifically, a plurality of flow dividing sheets are uniformly arranged on the peripheral wall of the flow dividing piece around the axis of the flow dividing piece, the radial outer end of each flow dividing sheet is attached to the inner peripheral wall of the combustion-supporting air pipe, and a second combustion-supporting sub-channel is defined between two adjacent flow dividing sheets.
In some embodiments, the flow rate of the atomizing gas circulated by the atomizing passage is greater than the ejection rate of the fuel at the fuel ejection orifice.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a cross-sectional view of a submerged fuel spray gun according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion of the front end of a submerged fuel spray gun in accordance with an embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along the direction A-A of fig. 2.
Reference numerals:
an immersed fuel spray gun 1,
An oil pipe 10, a fuel passage 110, a fuel outlet 111,
An atomization air pipe 20,
An atomizing passage 210, an atomizing air outlet 211,
A deflector 220, an atomizing sub-channel 221,
A combustion-supporting air pipe 30,
Combustion-supporting passage 310, combustion-supporting air outlet 311,
A splitter 320, a first combustion-supporting sub-channel 321, a second combustion-supporting sub-channel 322, and a splitter 323.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The specific structure of the submerged fuel spray gun 1 according to the embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1-2, the submerged fuel spray gun 1 according to the embodiment of the present invention includes an oil pipe 10, an atomizing air pipe 20, and a combustion air duct 30. The lumen of the oil pipe 10 is a fuel passage 110 for delivering fuel. The atomizing air pipe 20 is sleeved on the oil pipe 10, and an atomizing channel 210 for conveying atomizing gas is defined between the atomizing air pipe 20 and the oil pipe 10. The combustion-supporting air duct 30 is sleeved on the atomization air duct 20, and a combustion-supporting channel 310 for delivering combustion-supporting gas is defined between the combustion-supporting air duct 30 and the atomization air duct 20.
Specifically, the combustion-supporting channel 310 and the atomizing channel 210 are respectively provided with a combustion-supporting air outlet 311 and an atomizing air outlet 211 at the same end, the fuel channel 110 is provided with a fuel outlet 111 at one end adjacent to the atomizing air outlet 211, and the fuel outlet 111 is arranged towards the atomizing channel 210, so that the fuel in the fuel channel 110 is sprayed to the atomizing channel 210, mixed with the atomizing gas, and then the gas is sprayed from the atomizing air outlet 211.
It will be appreciated that in use, the submerged fuel lance 1 is required to be inserted directly into the hot melt to inject fuel and oxidant into the hot melt, which causes the outer wall of the lance to be in direct contact with the hot melt, such contact causing the outer wall of the lance to be extremely fragile, thereby reducing the service life of the lance. In the using process of the immersed fuel spray gun 1 of the embodiment, after the spray gun stretches into the high-temperature melt, the atomized air spray outlet sprays the mixture of fuel and atomized air, the combustion-supporting air outlet 311 sprays combustion-supporting gas, the surrounding melt can be pushed away by the high-speed sprayed combustion-supporting gas, and a gas cavity is blown out at the contact place of the front end of the spray gun and the high-temperature melt, so that the high-temperature melt is isolated from the front end of the spray gun, and the burning loss of the spray gun is reduced. In addition, the gas cavity formed by the combustion-supporting air is beneficial to further mixing and burning of atomized fuel oil and combustion-supporting gas in the cavity, and the burning efficiency of the fuel oil is improved. Meanwhile, the combustion-supporting gas moving at high speed in the combustion-supporting channel 310 can also play a certain role in cooling the combustion-supporting air duct 30 and the atomization air duct 20. In summary, providing the combustion supporting passage 310 in the submerged fuel spray gun 1 can reduce the burning loss of the front end of the spray gun, the service life is prolonged.
It should be noted that, in the submerged fuel spray gun 1 according to the embodiment of the present invention, the fuel is sprayed to the atomization channel 210 through the fuel spray opening 111 instead of the high-temperature melt, which reduces the possibility that the high-temperature melt blocks the fuel spray opening 111 during the use of the spray gun, and improves the operational reliability of the submerged fuel spray gun 1.
According to the submerged fuel spray gun 1 provided by the embodiment of the invention, as the fuel spray outlet 111 on the oil pipe 10 is arranged towards the atomization channel 210 of the atomization air pipe 20, the combustion-supporting air duct 30 is sleeved outside the atomization air pipe 20, so that the burning loss of the front end of the spray gun is reduced, the blocking probability of the fuel spray outlet 111 is reduced, the service life of the spray gun is prolonged, and the working reliability of the spray gun is improved.
In some embodiments, as shown in fig. 2, the oil pipe 10 is closed at one end portion adjacent to the atomized-air outlet 211, and the fuel ejection port 111 is provided on the peripheral wall of the oil pipe 10. It will be appreciated that after a period of use, the submerged fuel spray gun 1 may exhibit mild or moderate burnout at the end thereof having the atomized air outlet 211, the fuel pipe 10 being blind at the end adjacent to the atomized air outlet 211 and the fuel outlet 111 being provided in the peripheral wall of the fuel pipe 10, such that the submerged fuel spray gun 1 may be used normally even if the tip of the spray gun exhibits mild or moderate burnout, greatly extending the service life of the spray gun.
Specifically, the fuel outlets 111 are plural, the plural fuel outlets 111 are uniformly distributed around the axis of the oil pipe 10, and each fuel outlet 111 is formed as a slanting opening provided from inside to outside toward the atomized wind outlet 211. It will be appreciated that the fuel is delivered from the oil pipe 10 located at the center of the spray gun and is delivered from the oil pipe 10 around the furnace, and at the front end of the spray gun, due to the blocking effect of the blind end plug, the fuel can only be injected into the atomization channel 210 from the plurality of fuel injection ports 111 uniformly distributed around the axis of the oil pipe 10, and in the atomization channel 210, the fuel injected by the atomized gas moving at high speed generates a larger shearing effect, so that the atomization rate of the fuel is higher, and the combustion efficiency of the fuel is improved.
The fuel outlet 111 is formed with a slope provided from inside to outside toward the atomized wind outlet 211 to facilitate fuel injection, but the shape of the fuel outlet 111 is not limited to this, and in other embodiments of the present invention, the fuel outlet 111 may be formed with a straight hole perpendicular to the oil pipe 10 or with a slope provided from outside to inside toward the atomized wind outlet 211.
In some embodiments, the flow rate of the atomizing gas in the atomizing air duct 20 is 4% -10% of the theoretical air demand of the fuel combustion, and the flow direction of the combustion-supporting gas in the combustion-supporting air duct 30 is 1.2-2 times of the theoretical air demand of the fuel combustion. Therefore, the maximum combustion efficiency of the fuel can be ensured, and an operator can adjust the parameters according to the actual working conditions according to the different actual working conditions.
In some embodiments, as shown in fig. 3, a plurality of deflectors 220 are disposed within the nebulization channel 210, the plurality of deflectors 220 being distributed around the oil tube 10. Therefore, the flow guide vane 220 can equalize the flow of the atomized gas in the atomized channel 210, so that the fuel is atomized uniformly, and the mixture of the fuel and the atomized gas can be sprayed out from the atomized air outlet 211 uniformly along the circumferential direction, thereby improving the flame uniformity of the submerged fuel spray gun 1.
Specifically, the radially outer end of each deflector 220 is attached to the inner peripheral wall of the atomizing air pipe 20, the radially inner end of each deflector 220 is attached to the oil pipe 10, and the plurality of deflectors 220 uniformly divide the atomizing passage 210 into a plurality of atomizing sub-passages 221. Thereby, the flow equalizing effect of the guide vane 220 is further ensured.
More specifically, the plurality of fuel outlets 111 are provided in one-to-one correspondence with the plurality of atomizing sub-passages 221. It will be appreciated that the plurality of fuel outlets 111 are arranged in one-to-one correspondence with the plurality of atomizing sub-channels 221, so that fuel is injected into each atomizing sub-channel, which can improve the atomization effect of the fuel, and further improve the axial uniformity of the mixture of the fuel and the atomized gas when the mixture can be sprayed, thereby improving the flame uniformity of the submerged fuel spray gun 1.
In some embodiments, as shown in FIG. 3, a flow divider 320 is disposed within the combustion-supporting passage 310. It is understood that the flow divider 320 may divide the combustion-supporting gas in the combustion-supporting channel 310, so that the combustion-supporting gas can uniformly cool the combustion-supporting air duct 30 and the atomizing air duct 20.
Specifically, the splitter 320 is sleeved on the atomizing air pipe 20, and the splitter 320 is provided with a plurality of first combustion-supporting sub-channels 321, and the plurality of first combustion-supporting sub-channels 321 are uniformly distributed around the atomizing air pipe 20. Thereby, the diverting effect of the diverting member 320 can be further improved, thereby improving the cooling effect of the combustion-supporting gas.
Specifically, a plurality of flow dividing plates 323 are uniformly disposed on the outer peripheral wall of the flow dividing member 320 around the axis of the flow dividing member 320, and the radially outer end of each flow dividing plate 323 is attached to the inner peripheral wall of the combustion air duct 30, and a second combustion-supporting sub-channel 322 is defined between two adjacent flow dividing plates 323. It will be appreciated that the flow dividing plate 323 can uniformly divide the combustion-supporting gas flowing between the outer circumferential wall of the flow dividing member 320 and the inner circumferential wall of the combustion-supporting air duct 30, so that the flow dividing effect of the flow dividing member 320 can be further improved, and the cooling effect of the combustion-supporting gas can be further improved.
It should be noted that, the flow splitter 320 divides the combustion-supporting channel 310 into the first combustion-supporting sub-channel 321 and the second combustion-supporting sub-channel 322, so that the combustion-supporting gas can be blown out from the combustion-supporting air outlet 311 uniformly along the circumferential direction, so that the cavity of the combustion-supporting gas blown out from the high-temperature melt at the spray gun head is relatively uniform, the gun head of the submerged fuel spray gun 1 is better protected, and the service life of the submerged fuel spray gun is prolonged.
It should be noted that, the atomizing sub-channel 221, the first combustion-supporting sub-channel 321 and the second combustion-supporting sub-channel 322 are not limited to being uniformly distributed along the circumferential direction, and a designer can design the distribution states of the atomizing sub-channel 221, the first combustion-supporting sub-channel 321 and the second combustion-supporting sub-channel 322 according to actual needs.
In some embodiments, the flow rate of the atomizing gas flowing through the atomizing passage 210 is greater than the discharge rate of the fuel at the fuel discharge port 111. Therefore, the atomization effect of the fuel oil can be better. Of course, in other embodiments of the present invention, the flow rate of the atomizing gas flowing through the atomizing passage 210 may be equal to or slightly smaller than the discharge rate of the fuel at the fuel discharge port 111.
The following describes the specific construction of a submerged fuel spray gun 1 according to an embodiment of the present invention with reference to fig. 1-3.
As shown in fig. 1, the submerged fuel spray gun 1 of the present embodiment includes an oil pipe 10, an atomizing air pipe 20, and a combustion air duct 30. The lumen of the oil pipe 10 is a fuel passage 110 for delivering fuel. The atomizing air pipe 20 is sleeved on the oil pipe 10, and an atomizing channel 210 for conveying atomizing gas is defined between the atomizing air pipe 20 and the oil pipe 10. The combustion-supporting air duct 30 is sleeved on the atomization air duct 20, and a combustion-supporting channel 310 for delivering combustion-supporting gas is defined between the combustion-supporting air duct 30 and the atomization air duct 20.
As shown in fig. 2, the combustion-supporting passage 310 and the atomizing passage 210 are respectively provided with a combustion-supporting air outlet 311 and an atomizing air outlet 211 at the same end, the end of the oil pipe 10 adjacent to the atomizing air outlet 211 is closed, and the peripheral wall of the oil pipe 10 is provided with 8 fuel outlets 111 uniformly distributed along the circumferential direction. The fuel outlet 111 is disposed toward the atomization passage 210 so that fuel in the fuel passage 110 is sprayed toward the atomization passage 210, mixed with the atomization gas, and then sprayed from the atomization air outlet 211. Each fuel ejection port 111 is formed as a slanting port provided from inside to outside toward the atomized wind outlet 211.
As shown in fig. 3, eight guide vanes 220 are disposed in the atomization channel 210, the eight guide vanes 220 are uniformly disposed around the oil pipe 10, the radially outer end of each guide vane 220 is attached to the inner peripheral wall of the atomization air pipe 20, the radially inner end of each guide vane 220 is attached to the oil pipe 10, the eight guide vanes 220 uniformly divide the atomization channel 210 into eight atomization sub-channels 221, and the eight atomization sub-channels 221 are in one-to-one communication with the eight fuel outlets 111.
As shown in fig. 3, a splitter 320 is disposed in the combustion-supporting channel 310, the splitter 320 is sleeved on the atomizing air pipe 20, a plurality of first combustion-supporting sub-channels 321 are disposed on the splitter 320, and the plurality of first combustion-supporting sub-channels 321 are uniformly distributed around the atomizing air pipe 20. Eight flow dividing plates 323 are uniformly arranged on the outer peripheral wall of the flow dividing piece 320 around the axis of the flow dividing piece 320, the radial outer end of each flow dividing plate 323 is attached to the inner peripheral wall of the combustion-supporting air duct 30, and a second combustion-supporting sub-channel 322 is defined between two adjacent flow dividing plates 323.
The submerged fuel spray gun 1 of the present embodiment has the following advantages:
(1) The jet speed of the combustion-supporting gas in the combustion-supporting air duct 30 is high, a gas cavity can be formed at the front end of the spray gun, the high-temperature melt is separated from the spray gun, the burning loss of the spray gun is reduced, and the service life of the spray gun is prolonged;
(2) The fuel is sprayed into the atomization channel 210 through the laterally arranged fuel wind outlets, the spraying speed of the fuel is lower than the fluidity of atomized gas, and the fuel is atomized by utilizing the speed difference, so that the atomization effect is good;
(3) The front end of the spray gun is provided with a consumable blind end, and when the gun head is burnt slightly or moderately, the normal use of the spray gun can be ensured, and the service life of the spray gun is prolonged.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. A submerged fuel spray gun, characterized by comprising:
the pipe cavity of the oil pipe is a fuel channel for conveying fuel;
the atomization air pipe is sleeved on the oil pipe, and an atomization channel for conveying atomization gas is defined between the atomization air pipe and the oil pipe;
the combustion-supporting air pipe is sleeved on the atomization air pipe, and a combustion-supporting channel for conveying combustion-supporting gas is defined between the combustion-supporting air pipe and the atomization air pipe; wherein,
the combustion-supporting channel and the atomizing channel are respectively provided with a combustion-supporting air outlet and an atomizing air outlet at the same end; and, in addition, the method comprises the steps of,
the fuel oil channel is provided with a fuel oil ejection port at one end adjacent to the atomizing air outlet, and the fuel oil ejection port is arranged towards the atomizing channel, so that fuel oil in the fuel oil channel is firstly ejected to the atomizing channel and mixed with the atomizing gas, and the mixed gas is ejected from the atomizing air outlet;
a plurality of guide vanes are arranged in the atomization channel and distributed around the oil pipe;
the radial outer end of each guide vane is attached to the inner peripheral wall of the atomization air pipe, the radial inner end of each guide vane is attached to the oil pipe, and the atomization channels are uniformly divided into a plurality of atomization sub-channels by a plurality of guide vanes;
a flow dividing piece is arranged in the combustion supporting channel;
the flow dividing piece is sleeved on the atomization air pipe, a plurality of first combustion-supporting sub-channels are arranged on the flow dividing piece, and the first combustion-supporting sub-channels are uniformly distributed around the atomization air pipe;
the outer peripheral wall of the flow dividing piece is uniformly provided with a plurality of flow dividing pieces around the axis of the flow dividing piece, the radial outer end of each flow dividing piece is attached to the inner peripheral wall of the combustion-supporting air pipe, and a second combustion-supporting sub-channel is defined between two adjacent flow dividing pieces.
2. The submerged lancing of claim 1, wherein the oil pipe is closed at an end adjacent to the atomizing wind outlet, and the fuel outlet is provided on a peripheral wall of the oil pipe.
3. The submerged lancing of claim 2, wherein a plurality of said fuel injection ports are evenly distributed around the axis of said conduit, each of said fuel injection ports being formed as a bevel disposed in a direction from inside to outside toward said atomized wind outlet.
4. The submerged lancing of claim 1, wherein a plurality of the lancing ports are in one-to-one communication with a plurality of the atomizing sub-channels.
5. The submerged lancing gun of claim 1, wherein the flow velocity of the atomizing gas circulated by the atomizing passage is greater than the discharge velocity of the fuel at the fuel discharge orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276517.3A CN107763617B (en) | 2017-12-06 | 2017-12-06 | Immersed type Fuel spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711276517.3A CN107763617B (en) | 2017-12-06 | 2017-12-06 | Immersed type Fuel spray gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107763617A CN107763617A (en) | 2018-03-06 |
| CN107763617B true CN107763617B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711276517.3A Active CN107763617B (en) | 2017-12-06 | 2017-12-06 | Immersed type Fuel spray gun |
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| CN (1) | CN107763617B (en) |
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| CN106918041A (en) * | 2017-03-15 | 2017-07-04 | 中国恩菲工程技术有限公司 | For the fuel lance of submerged combustion bath smelting device |
| CN206556009U (en) * | 2017-03-06 | 2017-10-13 | 洛阳清源石化有限公司 | A kind of combined combustion machine |
| CN207648789U (en) * | 2017-12-06 | 2018-07-24 | 中国恩菲工程技术有限公司 | Immersion fuel lance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5972847B2 (en) * | 2013-10-21 | 2016-08-17 | 三菱日立パワーシステムズ株式会社 | Burner tip and combustion burner and boiler |
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| CN102049359A (en) * | 2011-01-04 | 2011-05-11 | 中国恩菲工程技术有限公司 | Spray gun and multi-fluid spray gun device provided with same |
| CN204127950U (en) * | 2014-07-25 | 2015-01-28 | 烟台双强燃烧工程有限公司 | Triple combination atomized oil gun |
| CN204933779U (en) * | 2015-08-03 | 2016-01-06 | 乌海黑猫炭黑有限责任公司 | New-type carbon black fuel Oil gun head |
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| CN206556009U (en) * | 2017-03-06 | 2017-10-13 | 洛阳清源石化有限公司 | A kind of combined combustion machine |
| CN106918041A (en) * | 2017-03-15 | 2017-07-04 | 中国恩菲工程技术有限公司 | For the fuel lance of submerged combustion bath smelting device |
| CN207648789U (en) * | 2017-12-06 | 2018-07-24 | 中国恩菲工程技术有限公司 | Immersion fuel lance |
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