CN114688533A - Nozzle of fuel pipe, ignition device and gasification furnace - Google Patents
Nozzle of fuel pipe, ignition device and gasification furnace Download PDFInfo
- Publication number
- CN114688533A CN114688533A CN202011618262.6A CN202011618262A CN114688533A CN 114688533 A CN114688533 A CN 114688533A CN 202011618262 A CN202011618262 A CN 202011618262A CN 114688533 A CN114688533 A CN 114688533A
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- nozzle
- ignition device
- ignition
- fuel pipe
- sleeve
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- 239000000446 fuel Substances 0.000 title claims abstract description 94
- 238000002309 gasification Methods 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 20
- 230000004907 flux Effects 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010892 electric spark Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/10—Arrangement or mounting of ignition devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a nozzle of a fuel pipe, an ignition device and a gasification furnace, wherein the ignition device comprises: a sleeve having an air inlet for inputting air; a fuel pipe eccentrically arranged in the sleeve, wherein one end of the fuel pipe is provided with a fuel inlet for inputting fuel, the other end of the fuel pipe is provided with a spray head, the spray head is provided with a main nozzle and an auxiliary nozzle, the central axis of the main nozzle is parallel to the axial direction of the fuel pipe, and the central axis of the auxiliary nozzle is obliquely arranged relative to the axial direction of the fuel pipe; and the ignition gun and the fuel pipe are arranged in the sleeve side by side, and the gun head of the ignition gun is adjacent to the auxiliary nozzle. The ignition device has simple structure and reliable ignition, and improves the ignition success rate of the ignition device.
Description
Technical Field
The invention relates to the technical field of gas combustion, in particular to a nozzle of a fuel pipe, an ignition device and a gasification furnace.
Background
In the industries of petrochemical industry, coal chemical industry and the like, high-calorific-value gases such as natural gas, coke oven gas and the like are usually ignited by adopting an ignition device when being combusted in a gasification furnace. But the ignition device has the problem of difficult ignition at present.
Disclosure of Invention
The invention aims to provide a nozzle of a fuel pipe, an ignition device and a gasification furnace, wherein the ignition device has reliable ignition and higher ignition success rate.
In one aspect, the present invention provides an ignition device comprising: a sleeve having an air inlet for inputting air; a fuel pipe eccentrically arranged in the sleeve, wherein one end of the fuel pipe is provided with a fuel inlet for inputting fuel, the other end of the fuel pipe is provided with a spray head, the spray head is provided with a main nozzle and an auxiliary nozzle, the central axis of the main nozzle is parallel to the axial direction of the fuel pipe, and the central axis of the auxiliary nozzle is obliquely arranged relative to the axial direction of the fuel pipe; and the ignition gun and the fuel pipe are arranged in the sleeve side by side, and the gun head of the ignition gun is adjacent to the auxiliary nozzle.
According to an aspect of the embodiment of the present invention, a predetermined angle θ is formed between a central axis of the auxiliary nozzle and an axial direction of the fuel pipe, and a value range of the predetermined angle θ is: theta is more than or equal to 60 degrees and less than or equal to 120 degrees.
According to one aspect of the embodiment of the invention, the spray head comprises a tubular side wall, an end part positioned at one end of the side wall and a conical wall arranged in a tapered mode from the side wall to the end part, the main nozzle is arranged at the end part, the auxiliary nozzle is arranged at the side wall or the conical wall, and the auxiliary nozzle is positioned between the end part and the plane where the gun head is positioned.
According to an aspect of an embodiment of the invention, the distance between the end of the lance tip and the plane in which the lance tip is located is less than or equal to 20 mm.
According to an aspect of the embodiment of the present invention, the number of the main nozzles is at least two, and the at least two main nozzles are circumferentially distributed at the end portion.
According to an aspect of an embodiment of the present invention, a minimum distance between the main nozzle and an edge of the end portion is 1mm to 4 mm.
According to an aspect of an embodiment of the present invention, the main nozzle or the auxiliary nozzle is a circular hole, and a hole size is 1.5mm to 4 mm.
According to one aspect of the embodiment of the invention, an opening is arranged at one end of the sleeve towards the spray head, an end cover is arranged at one end far away from the spray head, and the sleeve is provided with a fuel inlet pipe communicated with the fuel inlet, an air inlet pipe forming the air inlet and a mounting flange.
According to one aspect of the embodiment of the invention, the ignition gun further comprises a gun barrel, one end of the gun barrel is positioned in the sleeve, the other end of the gun barrel is positioned outside the sleeve and is connected with the end cover, and the ignition gun is coaxially arranged in the gun barrel.
According to one aspect of an embodiment of the present invention, the barrel is provided with a plurality of cooling holes on an outer circumferential surface thereof.
According to one aspect of the embodiment of the invention, a locking nut is arranged at one end of the ignition gun far away from the gun head, and an external thread matched with the locking nut is arranged at one end of the gun barrel outside the sleeve.
According to one aspect of an embodiment of the present invention, a resilient washer is disposed between the lock nut and the barrel.
According to an aspect of an embodiment of the invention, a flame detection device is further arranged in the sleeve, and the flame detection device is fixed on the end cover.
In another aspect, the present invention further provides a nozzle head of a fuel pipe, the nozzle head being provided with a main nozzle and an auxiliary nozzle, a central axis of the main nozzle being disposed parallel to an axial direction of the fuel pipe, and a central axis of the auxiliary nozzle being disposed at a predetermined angle to the axial direction of the fuel pipe.
In another aspect, the invention further provides a gasification furnace, which includes the ignition device.
According to the nozzle of the fuel pipe, the ignition device and the gasification furnace, the fuel pipe and the sleeve are arranged eccentrically, the main nozzle and the auxiliary nozzle are arranged on the nozzle of the fuel pipe, the central axis of the auxiliary nozzle is arranged obliquely relative to the axial direction of the fuel pipe, so that fuel sprayed by the auxiliary nozzle is efficiently impacted with air flowing in the sleeve along the axial direction to form a local combustible region of mixed gas, the gun head of an ignition gun is positioned in the mixed gas region, ignition is reliable, and the ignition success rate of the ignition device is improved. In addition, the ignition device has simple structure, lower cost and easy realization.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Fig. 1 is a schematic perspective view of an ignition device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the ignition device shown in FIG. 1 in the direction A;
FIG. 3 illustrates a schematic structural view of a nozzle tip of a fuel tube of the ignition device shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the ignition device shown in FIG. 2 taken along the direction B-B;
FIG. 5 is an enlarged schematic view of a region C of the ignition device shown in FIG. 4;
fig. 6 is an enlarged schematic view of a region D of the ignition device shown in fig. 4.
Description of reference numerals:
1-a sleeve; 1 a-an air inlet; 11-an air inlet pipe; 111-a first counterflange; 12-a fuel inlet pipe; 121-a second counterflange; 13-opening; 14-an end cap; 15-mounting a flange;
2-fuel line; 21-a spray head; 21 a-end; 21 b-side wall; 21 c-a conical wall; 211 — a main orifice; 212-auxiliary spout; 2 a-a fuel inlet;
3-an ignition gun; 31-a lance head; 32-a lock nut; 33-a resilient pad;
4-a barrel; 41-Cooling hole.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the ignition device of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Fig. 1 is a schematic perspective view illustrating an ignition device according to an embodiment of the present invention, fig. 2 is a schematic view illustrating the ignition device shown in fig. 1 in a direction a, and fig. 3 is a schematic view illustrating a nozzle head of a fuel cartridge of the ignition device shown in fig. 1.
Referring to fig. 1 to 3 together, an ignition device according to an embodiment of the present invention includes: a sleeve 1, a fuel pipe 2 and an ignition gun 3.
The bushing 1 has an air inlet 11 for the input of air.
The fuel pipe 2 is eccentrically disposed in the casing 1, one end of the fuel pipe 2 has a fuel inlet 22 for inputting fuel, the other end is provided with a nozzle 21, the nozzle 21 is provided with a main nozzle 211 and an auxiliary nozzle 212, a central axis of the main nozzle 211 is disposed parallel to an axial direction of the fuel pipe 2, and a central axis of the auxiliary nozzle 212 is disposed obliquely with respect to the axial direction of the fuel pipe 2. Alternatively, the fuel is a combustible gas such as natural gas, coke oven gas, or the like.
The ignition gun 3 is arranged in the sleeve 1 side by side with the fuel pipe 2, and the gun head 31 of the ignition gun 3 is arranged adjacent to the auxiliary nozzle 212.
In the embodiment, the ignition device adopts the working principle of jet diffusion combustion, and fuel is injected into the sleeve 1 from the nozzle 21 to form airflow so as to be mixed with air in the sleeve 1. The main nozzle 211 and the auxiliary nozzle 212 of the shower head 21 divide the fuel into two regions to be supplied: a locally combustible region and a flame-stabilizing region.
Wherein the fuel pipe 2 is eccentrically disposed in the casing 1, and the central axis of the auxiliary nozzle 212 of the fuel pipe 2 is disposed obliquely with respect to the axial direction of the fuel pipe 2, so that the fuel sprayed from the auxiliary nozzle 212 can efficiently collide with the air flowing in the casing 1 in the axial direction to form a local combustible region of the mixed gas, in which the tip 31 of the ignition gun 3 is located, so that the mixed gas can be easily ignited by the electric spark struck by the ignition gun 3. The inventor verifies that the ignition success rate can reach more than 99%. In addition, the fuel sprayed from the main nozzle 211 and the air flowing in the sleeve 1 along the axial direction form a stable combustion area of the mixed gas, so that the fuel can be stably combusted.
In order to make the electric spark from the ignition gun 3 to sufficiently ignite the mixed gas, the direction of the ignition device may be adjusted. For example, if the density of the fuel is less than that of the air, the ignition gun 3 may be disposed above the fuel pipe 2 with the tip end 31 of the ignition gun 3 disposed adjacent to the auxiliary nozzle hole 212. If the density of the fuel is greater than or equal to that of the air, the ignition gun 3 may be disposed below the fuel pipe 2 with the tip end 31 of the ignition gun 3 disposed adjacent to the auxiliary nozzle hole 212.
In addition, because the nozzle 21 of the fuel pipe 2 can be provided with the main nozzle 211 and the auxiliary nozzle 212 at the same time, and the ignition gun 3 only needs to be arranged in the sleeve 1 side by side with the fuel pipe 2 and at a position adjacent to the auxiliary nozzle 212, the requirement on the position accuracy of the ignition gun 3 is not high, the structure is simple, the cost is low, and the realization is easy.
According to the ignition device provided by the embodiment of the invention, the fuel pipe 2 and the sleeve 1 are arranged eccentrically, and the main nozzle 211 and the auxiliary nozzle 212 are arranged on the spray head of the fuel pipe 2, wherein the central axis of the auxiliary nozzle 212 is arranged obliquely relative to the axial direction of the fuel pipe 2, so that the fuel sprayed by the auxiliary nozzle 212 efficiently collides with the air flowing in the sleeve 1 along the axial direction to form a local combustible region of the mixed gas, and the gun head 31 of the ignition gun 3 is positioned in the mixed gas region, the ignition is reliable, and the ignition success rate of the ignition device is improved. In addition, the ignition device has simple structure, lower cost and easy realization.
Fig. 4 is a schematic sectional view of the ignition device shown in fig. 2 taken along the direction B-B, and fig. 5 is an enlarged schematic sectional view of a region C of the ignition device shown in fig. 4.
In some embodiments, the central axis of the auxiliary nozzle 212 is disposed at a predetermined angle θ with respect to the axial direction of the fuel pipe 2, and the predetermined angle θ has a range of values: theta is more than or equal to 60 degrees and less than or equal to 120 degrees.
Further, the nozzle 21 includes a tubular side wall 21b, an end 21a at one end of the side wall 21b, and a tapered wall 21c tapered from the side wall 21b to the end 21a, the main nozzle 211 is opened at the end 21a, the auxiliary nozzle 212 is opened at the side wall 21b or the tapered wall 21c, and the auxiliary nozzle 212 is located between the end 21a and the plane of the lance tip 31.
As shown in fig. 4 and 5, the tapered wall 21c is a chamfer or rounded corner connecting the side wall 21b and the end portion 21a, and the auxiliary nozzle ports 212 are formed in the tapered wall 21c when the predetermined angle θ between the center axis of the auxiliary nozzle ports 212 and the axial direction of the fuel pipe 2 is 60 ° to 90 °. The auxiliary nozzle ports 212 open on the side wall 21b if the predetermined angle θ between the center axis of the auxiliary nozzle ports 212 and the axial direction of the fuel pipe 2 is any angle between 90 ° and 120 °. Regardless of the size of the predetermined angle θ, the auxiliary nozzle 212 is located between the end 21a and the plane of the lance tip 31.
Optionally, the distance t between the end 21a of the nozzle 21 and the plane in which the lance tip 31 lies is less than or equal to 20 mm. The distance t is located in a local combustible region of mixed gas formed by high-efficiency impact of fuel sprayed from the auxiliary nozzle 212 and air flowing in the sleeve 1 along the axial direction, so that smooth ignition of the gun head 31 of the ignition gun 3 can be guaranteed.
Alternatively, the main nozzle 211 or the auxiliary nozzle 212 is a circular hole, and the size of the hole is 1.5mm to 4 mm. In order to ensure stable combustion of fuel after ignition, the number of the main ports 211 of the nozzle head 21 is at least two, and at least two of the main ports 211 are circumferentially distributed at the end portion 21 a. In addition, the distance between the main nozzle of the nozzle 21 and the edge of the end face 21a is related to the flux ratio of the fuel and the air momentum, and generally, the larger the distance is, the larger the flux ratio parameter range of the fuel and the air momentum is, and the flux ratio parameter range can reach 1-100; conversely, the smaller the distance, the smaller the flux ratio parameter range of the fuel to air momentum is, the smaller the flux ratio parameter range is, and the smaller the flux ratio parameter range is, the fuel to air momentum is, and the smaller the flux ratio parameter range is, the smaller the distance is, the smaller the flux ratio parameter range is, the smaller the flux ratio parameter range is, and the smaller the distance is, the smaller the distance is, the smaller the flux ratio parameter range is, the smaller the distance is, and the smaller the distance is, and the distance is, the smaller the distance is, and the smaller the flux ratio is, and the flux ratio is, the smaller the flux ratio is, and the distance is, the smaller the distance is, and the smaller the flux ratio is, and the flux ratio is, the smaller the distance is, the smaller the distance is, and the flux ratio is, the distance is, and the smaller the distance is, and the smaller the distance is, and the smaller the. The fuel supply device and the air supply device can be respectively provided with a regulating valve, and the flow ratio of the fuel and the air can be regulated through central control. During design, the distance between the main nozzle 211 and the edge of the end 21a is within the test range, so that successful ignition can be ensured. Alternatively, the minimum distance between the main nozzle 211 and the edge of the end portion 21a is 1mm to 4 mm.
As shown in fig. 3, the three main nozzles 211 are circumferentially and uniformly distributed at the end 21a, one auxiliary nozzle 212 is disposed on the tapered surface 21c, and both the main nozzles 211 and the auxiliary nozzle 212 are circular holes, which may be equal in size or unequal in size, and are not limited herein.
In some embodiments, an end of the sleeve 1 facing the nozzle head 21 is provided with an opening 13, an end cover 14 is provided at an end away from the nozzle head 21, and the sleeve 1 is provided with a fuel inlet pipe 12 communicating with the fuel inlet 22, an air inlet pipe 11 forming the air inlet 1a, and a mounting flange 15.
As shown in fig. 1, the air inlet pipe 11 and the fuel inlet pipe 12 are integrally formed with the sleeve 1, and a first mating flange 111 is provided at an end of the air inlet pipe 11 remote from the sleeve 1 to mate with a flange of an external air supply device. The air supply device can supply oxygen or air containing a certain content of oxygen. The end of the fuel inlet pipe 12 remote from the sleeve 1 is provided with a second docking flange 121 for docking with a flange of an external fuel supply. The sleeve 1 is also provided with an installation flange 15 for fixing the ignition device on the gasification furnace or the accessory equipment of the gasification furnace.
The flame generated by the combustion of the fuel in the casing 1 radiates in various forms all around. In order to control the flame size in the casing 1 and ensure the safe operation of the ignition device, in some embodiments, a flame detection device (not shown) is further disposed in the casing 1, and the flame detection device is fixed to the end cap 14. Flame detection devices are classified into ultraviolet flame detection devices, infrared flame detection devices, and visible flame detection devices according to the wavelength of flame detected.
In some embodiments, the ignition device provided by the embodiments of the present invention further includes a barrel 4, one end of the barrel 4 is located inside the sleeve 1, the other end of the barrel 4 is located outside the sleeve 1 and is connected with the end cap 14, and the ignition gun 3 is coaxially arranged inside the barrel 4. Barrel 4 can be fixed in sleeve pipe 1's end cover 14 through modes such as welding, after ignition gun 3 confirmed its position on sleeve pipe 1 through barrel 4, only need utilize the screw thread with barrel 4 fixed can, be convenient for install and change ignition gun 3, do not need the exclusive use support to fix ignition gun 3 near shower nozzle 21, also need not artifical change ignition gun 3 that gets into in the gasifier during maintenance, greatly reduced ignition gun 3's change work, safe and reliable more.
Since the process of striking the electric spark by the burning torch 3 is equivalent to converting electric energy into heat energy, which generates a large amount of heat, a plurality of cooling holes 41 are formed on the outer circumferential surface of the barrel 4 in order to rapidly cool the burning torch 3. Optionally, cooling hole 41 is waist-shaped groove, rectangular channel or circular port, and a plurality of cooling holes 41 are evenly arranged along the axial and circumference of barrel 4, let in the cooling air in barrel 4 under the convenient prerequisite of 3 plugs of burning torch, guarantee that the heat dissipation of 3 working periods of burning torch is even, improve the operational environment of burning torch 3, are favorable to improving the life of burning torch 3.
Fig. 6 is an enlarged schematic view of a region D of the ignition device shown in fig. 4.
The gas in the gasification furnace is mainly nitrogen gas in the ignition stage, is mainly hot smoke gas in the stable operation period, is non-toxic and pollution-free, but is dangerous under the condition of high pressure if the gas in the furnace leaks instantly. The working back pressure of the ignition gun 3 is generally between 2.0MPa and 4.5MPa, and the back pressure is high, so the sealing of the tail parts of the ignition gun 3 and the gun barrel 4 is particularly important.
In order to avoid the leakage of high-pressure gas at the tail of the ignition gun 3, in some embodiments, as shown in fig. 4 and 6, the end of the ignition gun 3 away from the gun head 31 is provided with a lock nut 32, and the end of the gun barrel 4 outside the sleeve 1 is provided with an external thread which is in threaded fit with the lock nut 32.
Further optionally, a resilient washer 33 is provided between the lock nut 32 and the barrel 4. Optionally, the elastic washer 33 is a copper washer, which has excellent thermal conductivity and ductility and can withstand repeated deformation, and a plurality of copper washers can be used to fine-tune the ignition position of the ignition gun 3, thereby improving the sealing performance between the lock nut 32 and the barrel 4. But needs regular maintenance to avoid the safety problem in operation caused by gas leakage in the furnace.
The locking nut 32 is used as a secondary protection device, even if pressure leakage occurs at the position of the red copper gasket, gas in the furnace can also leak in the radial direction at the end face of the furnace through the locking nut, so that direct impact to people is avoided, and the risk during maintenance under pressure is reduced. Therefore, no operation risk exists for field operators in front of the gasification furnace, and the safety and reliability of the ignition gun 3 are greatly improved.
In addition, the embodiment of the invention also provides a gasification furnace, which comprises the ignition device.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (15)
1. An ignition device, comprising:
a sleeve (1) having an air inlet (1a) for inputting air;
a fuel pipe (2) eccentrically disposed within the sleeve (1), one end of the fuel pipe (2) having a fuel inlet (2a) for inputting fuel and the other end being provided with a nozzle (21), the nozzle (21) being provided with a main nozzle (211) and an auxiliary nozzle (212), a central axis of the main nozzle (211) being disposed parallel to an axial direction of the fuel pipe (2), and a central axis of the auxiliary nozzle (212) being disposed obliquely with respect to the axial direction of the fuel pipe (2);
the ignition gun (3) and the fuel pipe (2) are arranged in the sleeve (1) side by side, and a gun head (31) of the ignition gun (3) is adjacent to the auxiliary nozzle (212).
2. The ignition device according to claim 1, wherein a predetermined angle θ is provided between a central axis of the auxiliary nozzle (212) and an axial direction of the fuel pipe (2), and the predetermined angle θ has a value range of: theta is more than or equal to 60 degrees and less than or equal to 120 degrees.
3. An ignition device according to claim 1, characterized in that the lance head (21) comprises a tubular side wall (21b), an end portion (21a) at one end of the side wall (21b) and a conical wall (21c) tapering from the side wall (21b) towards the end portion (21a), the main nozzle (211) opening into the end portion (21a), the auxiliary nozzle (212) opening into the side wall (21b) or the conical wall (21c), and the auxiliary nozzle (212) being located between the end portion (21a) and the plane of the lance tip (31).
4. An ignition device according to claim 1, characterized in that the distance between the end (21a) of the lance tip (21) and the plane in which the lance tip (31) lies is less than or equal to 20 mm.
5. An ignition device according to claim 1, characterized in that the number of the main orifices (211) is at least two, at least two of the main orifices (211) being circumferentially distributed at the end portion (21 a).
6. An ignition device according to claim 1, characterized in that the minimum distance between the main nozzle (211) and the edge of the end portion (21a) is 1-4 mm.
7. An ignition device according to claim 1, characterized in that the main nozzle (211) or the auxiliary nozzle (212) is a circular hole and the size of the hole diameter is 1.5mm to 4 mm.
8. An ignition device according to claim 1, characterized in that an end of the sleeve (1) facing the spray head (21) is provided with an opening (13), an end cover (14) is provided at an end remote from the spray head (21), and the sleeve (1) is provided with a fuel inlet pipe (12) communicating with the fuel inlet (2a), an air inlet pipe (11) forming the air inlet (1a), and a mounting flange (15).
9. An ignition device according to claim 8, characterized by further comprising a barrel (4), wherein one end of the barrel (4) is located inside the sleeve (1), the other end is located outside the sleeve (1) and is connected with the end cap (14), and the ignition gun (3) is coaxially arranged inside the barrel (4).
10. An ignition device according to claim 10, characterized in that the barrel (4) is provided with a plurality of cooling holes (41) on its outer circumference.
11. An ignition device according to claim 10, characterized in that the end of the ignition gun (3) remote from the gun head (31) is provided with a locking nut (32), and the end of the gun barrel (4) outside the sleeve (1) is provided with an external thread which is in threaded engagement with the locking nut (32).
12. An ignition device according to claim 11, characterized in that an elastic washer (33) is arranged between the lock nut (32) and the barrel (4).
13. An ignition device according to claim 8, characterized in that a flame detection device is further arranged in the sleeve (1), said flame detection device being fixed to the end cap (14).
14. A spray head of a fuel pipe, characterized in that a main nozzle (211) and an auxiliary nozzle (212) are provided to the spray head (21), a central axis of the main nozzle (211) is arranged in parallel to an axial direction of the fuel pipe (2), and a central axis of the auxiliary nozzle (212) is arranged at a predetermined angle to the axial direction of the fuel pipe (2).
15. A gasification furnace characterized by comprising the ignition device according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618262.6A CN114688533A (en) | 2020-12-30 | 2020-12-30 | Nozzle of fuel pipe, ignition device and gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618262.6A CN114688533A (en) | 2020-12-30 | 2020-12-30 | Nozzle of fuel pipe, ignition device and gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114688533A true CN114688533A (en) | 2022-07-01 |
Family
ID=82134916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011618262.6A Pending CN114688533A (en) | 2020-12-30 | 2020-12-30 | Nozzle of fuel pipe, ignition device and gasification furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN114688533A (en) |
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|---|---|---|---|---|
| JPH1068510A (en) * | 1996-08-27 | 1998-03-10 | Nippon Furnace Kogyo Kaisha Ltd | Fuel injection gun |
| CN1381693A (en) * | 2002-06-03 | 2002-11-27 | 上海交通大学 | Sprayer for blowing-type premixing single-hole gas burner |
| CN101706103A (en) * | 2009-12-11 | 2010-05-12 | 北京工业大学 | Efficient and energy-saving environment-friendly high-pressure burner |
| RU2456510C1 (en) * | 2011-02-18 | 2012-07-20 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Continuous-action combustion chamber |
| CN103277795A (en) * | 2013-05-27 | 2013-09-04 | 中国科学院广州能源研究所 | Gas burner capable of adjusting gas to be self-recycling |
| CN103672888A (en) * | 2013-09-16 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Ignition burner |
| CN109442398A (en) * | 2018-07-18 | 2019-03-08 | 北京航空航天大学 | A kind of multi-point direct spray is to cutting mixed radial spray low NO fastly |
| CN109973994A (en) * | 2019-04-03 | 2019-07-05 | 西安航天源动力工程有限公司 | A kind of low NO |
| CN215112585U (en) * | 2020-12-30 | 2021-12-10 | 西安航天源动力工程有限公司 | Nozzle of fuel pipe, ignition device and gasification furnace |
-
2020
- 2020-12-30 CN CN202011618262.6A patent/CN114688533A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1068510A (en) * | 1996-08-27 | 1998-03-10 | Nippon Furnace Kogyo Kaisha Ltd | Fuel injection gun |
| CN1381693A (en) * | 2002-06-03 | 2002-11-27 | 上海交通大学 | Sprayer for blowing-type premixing single-hole gas burner |
| CN101706103A (en) * | 2009-12-11 | 2010-05-12 | 北京工业大学 | Efficient and energy-saving environment-friendly high-pressure burner |
| RU2456510C1 (en) * | 2011-02-18 | 2012-07-20 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Continuous-action combustion chamber |
| CN103277795A (en) * | 2013-05-27 | 2013-09-04 | 中国科学院广州能源研究所 | Gas burner capable of adjusting gas to be self-recycling |
| CN103672888A (en) * | 2013-09-16 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Ignition burner |
| CN109442398A (en) * | 2018-07-18 | 2019-03-08 | 北京航空航天大学 | A kind of multi-point direct spray is to cutting mixed radial spray low NO fastly |
| CN109973994A (en) * | 2019-04-03 | 2019-07-05 | 西安航天源动力工程有限公司 | A kind of low NO |
| CN215112585U (en) * | 2020-12-30 | 2021-12-10 | 西安航天源动力工程有限公司 | Nozzle of fuel pipe, ignition device and gasification furnace |
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