CN112984551B - Orifice plate turbulent flow type oil-free pulverized coal igniter - Google Patents
Orifice plate turbulent flow type oil-free pulverized coal igniter Download PDFInfo
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- CN112984551B CN112984551B CN202110417870.9A CN202110417870A CN112984551B CN 112984551 B CN112984551 B CN 112984551B CN 202110417870 A CN202110417870 A CN 202110417870A CN 112984551 B CN112984551 B CN 112984551B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/02—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/22—Details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses an orifice plate turbulent flow type oil-free pulverized coal igniter, which comprises: the heating core is placed inside the reaction combustion chamber, the reaction combustion chamber is provided with two openings along the length direction of the reaction combustion chamber, one end of the reaction combustion chamber is used as a power supply sealing hole of a power supply lead, and the other end of the reaction combustion chamber is provided with a fire outlet; the reaction combustion chamber comprises a front shell, a rear shell and a thermocouple seat, wherein the front shell and the rear shell are detachably connected, the thermocouple seat is arranged on the side wall of the radial direction of the front shell and the side wall of the radial direction of the rear shell, a feeding hole is formed in the radial direction of the front shell, and the feeding hole and the thermocouple seat on the front shell are positioned at opposite positions. The orifice plate turbulent flow type oil-free pulverized coal igniter provided by the invention realizes oil-free ignition and stable combustion, has a large application range to coal types, is easy to assemble and replace, and enables pulverized coal to fully absorb heat for reaction and to be rapidly cracked into combustible gas.
Description
Technical Field
The present invention relates to an igniter. More particularly, the invention relates to an orifice plate turbulent flow type oil-free pulverized coal igniter.
Background
With the increasing demand of environmental protection, the original burners used for rotary kilns of coal-fired boilers and other burners needing ignition and stable combustion are ignited and stably combusted by fuel oil, a large amount of fuel oil is needed, the environment is not protected and the economy is not realized, the plasma ignition in recent years can achieve the effects of oil-free ignition and stable combustion, but the requirements on coal types are limited, low-heat-value coal can not be directly ignited, the application of the low-heat-value coal is limited, other oil-free ignition devices are also continuously appeared in recent years, but the low-heat-value coal is limited by high-temperature-resistant materials and structures, certain defects exist in safety performance, and the application of large boilers is relatively high in safety.
The existing igniter has the problems of difficult disassembly, difficult replacement, low combustion efficiency and the like, so that the development of the orifice plate turbulent flow type oil-free pulverized coal igniter is very important.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the orifice plate turbulent flow type oil-free pulverized coal igniter which realizes oil-free ignition and stable combustion, has a large application range to coal types, is easy to assemble and replace, ensures that pulverized coal fully absorbs heat for reaction and is quickly cracked into combustible gas.
The technical scheme of the invention is realized as follows:
the orifice plate turbulent flow type oilless pulverized coal igniter comprises a heating core and a reaction combustion chamber, wherein the heating core is arranged in the reaction combustion chamber, the reaction combustion chamber is provided with two openings along the length direction of the reaction combustion chamber, one end of the reaction combustion chamber is used as a power supply sealing hole of a power supply lead, and the other end of the reaction combustion chamber is provided with a fire outlet; the reaction combustion chamber comprises a front shell, a rear shell and a thermocouple seat, wherein the front shell and the rear shell are detachably connected, the thermocouple seat is arranged on the side wall of the radial direction of the front shell and the side wall of the radial direction of the rear shell, a feeding hole is formed in the radial direction of the front shell, and the feeding hole and the thermocouple seat on the front shell are positioned at opposite positions.
Preferably, the front port of the front housing is fixedly provided with a first connection flange, the rear port of the front housing is detachably connected with a sealing cover plate, the sealing cover plate is provided with a power supply sealing hole, and a power supply can be electrically connected with the heating core through the power supply sealing hole.
Preferably, the front end of the rear shell is a fire outlet, the rear end of the rear shell is fixedly connected with a second connecting flange plate, the second connecting flange plate is detachably connected with the first connecting flange plate through bolts, and a thermocouple seat arranged on the side wall of the rear shell is positioned on the same side as a thermocouple seat arranged on the side wall of the front shell.
Preferably, the reaction combustion chamber adopts a composite lamellar structure, and comprises an inner layer, a heat insulation layer and a shell from inside to outside.
Preferably, the heating core comprises a first pore plate, a second pore plate, a turbolator and a ceramic radiant tube, wherein through holes with equal angles for fixing the ceramic radiant tube are formed in the first pore plate and the second pore plate, and the turbolator is inserted into the ceramic radiant tube; the second pore plate is also provided with a pulverized coal fluid hole; the number of the ceramic radiation pipes is 2 times of that of the turbolator; the tail end of the turbolator is connected with a power supply.
Preferably, the turbolator adopts a U-shaped structure and is processed into a spiral shape, and the two cold ends of the turbolator share one heating section. The cold end can be connected with a main power circuit by aluminum braid or aluminum platinum. The turbolator is made of high-temperature-resistant and oxidation-resistant silicon carbide rod materials, and the silicon carbide rod is processed into a single spiral shape.
Preferably, the number of the first orifice plates is 2-5, and the number of the second orifice plates is 5-10.
Preferably, from right to left, 6 second orifice plates and 3 first orifice plates are connected in sequence in a detachable manner, the diameters of the first orifice plates and the second orifice plates are the same, wherein the 6 second orifice plates are arranged at 30 degrees of each layer of fault, and the positions of through holes on all the first orifice plates and the second orifice plates are communicated correspondingly; and the ceramic radiant tubes are inserted into the through holes of the first pore plate and the second pore plate, and then the two heating sections of the turbolator are respectively inserted into the ceramic radiant tubes and fixed inside the first pore plate and the second pore plate.
Preferably, the first pore plate is a circular pore plate made of silicon nitride, and 12 or 18 through holes for fixing the spoiler are formed in the concentric circumference, which is close to the edge of the pore plate and far from the center of the circle, at equal angles, wherein the 12 through holes are distributed in the concentric circumference, which is close to the edge of the pore plate and far from the center of the circle, and the center distances of every two adjacent through holes are equal; the rest through holes are distributed on concentric circumferences close to the circle center, wherein the circle center distances of every two adjacent through holes are equal. The first pore plate is used for fixing and sealing the turbolator heating element and sealing and isolating the turbolator heating element.
Preferably, the second pore plate is a circular pore plate made of silicon nitride, a central through hole is formed in the second pore plate, a first circle of through holes and a second circle of through holes are distributed around the periphery of the central through hole according to a distance away from the central through hole, the first circle of through holes are distributed at equal angles on the concentric circumference of the central through hole, and the circle center distances of every two adjacent through holes are equal; the second circle of through holes are formed by arranging 12 through holes on the concentric circumference far away from the central through hole, and the center distances of every two adjacent through holes are equal, wherein the adjacent through holes of every two adjacent through holes are mutually communicated to form 3 communication holes; a plurality of pulverized coal fluid holes are distributed in the gaps between the first circle of through holes and the second circle of through holes; 12 pulverized coal fluids are distributed on the circumscribed circle of the second circle of through holes at equal angles.
The invention at least comprises the following beneficial effects:
(1) When the turbolator heating component reaches the service life or fails, the sealing cover plate can be opened, the turbolator heating component is pulled out, and the heating component and the pore plate are integrally inserted into the cavity after being assembled outside, so that the assembly and the replacement are easy.
(2) The turbolator is fixed with an internal pore plate through a ceramic radiation resistant pipe, and a turbolator ceramic sleeve hole and a fuel through hole are arranged on the pore plate. The fixed ceramic tube orifice plate is used for fixing and sealing a turbolator heating body and sealing and isolating, the fixed turbolator and the pulverized coal fluid orifice plate are divided into 6 groups, are arranged at 30 degrees in each layer, are used as safe fixation of a ceramic tube and a channel of pulverized coal flow on the outer wall of the ceramic tube, are provided with holes which are beneficial to pulverized coal fluid to pass through, increase the contact area of pulverized coal fluid and the turbolator, facilitate pulverized coal pyrolysis into combustible gas and facilitate pulverized coal ignition; the through holes on the first pore plate and the second pore plate are convenient for fixing the turbolator and the radiation guide pipe outside the turbolator, so that the turbolator is prevented from being broken easily due to direct stress of the turbolator, the protection of the turbolator is facilitated, and meanwhile, the turbolator generates heat to heat the radiation ceramic pipe through heat radiation, and the cracking and burning of coal dust outside the ceramic pipe are facilitated.
(3) Because the spoiler adopts a spoiler structure, the heat transfer temperature difference can be increased, the heat transfer coefficient is increased, and the dispersion flow effect is generated by the mixture of the pulverized coal and the air on the surface of the spoiler, so that the fluid becomes turbulent, and the pulverized coal can fully absorb heat for reaction and be rapidly cracked into combustible gas.
(4) The special heating core for the orifice plate turbulent flow type oilless pulverized coal igniter can improve the combustion efficiency by 1.5 times.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the orifice plate turbulent flow type oil-free pulverized coal igniter.
FIG. 2 is a schematic diagram of a composite layered structure of a reaction chamber of an orifice-plate turbulent flow type oilless pulverized coal igniter of the invention.
Fig. 3 is a schematic structural diagram of a heating core special for the orifice plate turbulent flow type oilless pulverized coal igniter.
Fig. 4 is a perspective view of a U-shaped spoiler dedicated for a heating core of the orifice plate spoiler type oilless pulverized coal igniter of the present invention.
Fig. 5 is a schematic structural view of a first orifice plate 1210 of a heating core dedicated for an orifice plate turbulence type oilless pulverized coal igniter according to the present invention.
Fig. 6 is a schematic structural view of a first orifice plate 1210 of a heating core dedicated for an orifice plate turbulence type oilless pulverized coal igniter according to the present invention.
Fig. 7 is a schematic structural view of a second orifice plate 1220 of the heating core dedicated for the orifice plate turbulence type oilless pulverized coal igniter of the present invention.
Fig. 8 is a schematic structural view of a second orifice plate 1220 of the heating core dedicated for the orifice plate turbulence type oilless pulverized coal igniter of the present invention.
Fig. 9 is a schematic structural diagram of the first orifice plate 1210 of the heating core for the orifice plate turbulent oilless pulverized coal igniter of fig. 6 inserted with a U-shaped spoiler.
In the drawings, 1000-heating core, 1100-U-shaped turbolator, 1101-heating section, 1102-cold end, 1200-orifice plate, 1210-first orifice plate, 1211-through hole, 1220-second orifice plate, 1221-central through hole, 1222-pulverized coal fluid hole, 1211 a-communication hole, 1300-power supply, 1400-ceramic radiant tube, 2000-reaction combustion chamber, C1-inner layer, C2-heat layer, C3-shell, 2100-front shell, 2110-feed inlet, 2111-flange, 2120-power supply sealing hole, 2121-sealing cover plate, 2130-first connection flange, 2200-rear shell, 2210-second connection flange, 2220-fire outlet, 2300-thermocouple base.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
As shown in fig. 1 and 2, the invention comprises a heating core 1000 and a reaction combustion chamber 2000, wherein the heating core 1000 is a plurality of groups of U-shaped turbolator 1100 installed in a ceramic radiant tube 1400, the ceramic radiant tube 1400 is installed in the reaction combustion chamber 2000 through a pore plate 1200, the U-shaped turbolator 1100 adopts a spiral turbolator structure, the turbolator material adopts a high temperature resistant silicon carbide carbon rod, the ceramic radiant tube 1400 adopts a silicon carbide composite material with good heat conducting property, the reaction combustion chamber 2000 adopts a steel shell structure, the inner layer C1 adopts a high temperature resistant silicon carbide composite material, and a heat insulation layer C2 is arranged between the outer shell C3 and the inner layer C1. The reaction combustion chamber 2000 is provided with two openings along the length direction thereof, one end is a power supply sealing hole 2120 of a power supply 1300 wire, the other end is a fire outlet 2220, and a fuel feeding hole 2110 is arranged along the radial direction.
The method comprises the following steps: comprises a heating core 1000 and a reaction combustion chamber 2000, wherein the heating core 1000 is arranged inside the reaction combustion chamber 2000; the reaction combustion chamber 2000 comprises a front housing 2100, a rear housing 2200 and a thermocouple base 2300, the front housing 2100 and the rear housing 2200 are detachably connected, the thermocouple base 2300 is arranged on the side wall of the front housing 2100 and the side wall of the rear housing 2200, a feeding hole 2110 is formed in the front housing 2100, the feeding hole 2110 and the thermocouple base 2300 on the front housing 2100 are located at opposite positions, a first connecting flange 2130 is fixedly arranged at the front port of the front housing 2100, a sealing cover plate 2121 is detachably connected at the rear port of the front housing 2100, a power sealing hole 2120 is formed in the sealing cover plate 2121, and the power 1300 can be electrically connected with the heating core 1000 through the power sealing hole 2120. The front end of the rear housing 2200 is provided with a fire outlet 2220, the rear end of the rear housing 2200 is fixedly connected with a second connection flange 2210, the second connection flange 2210 is detachably connected with the first connection flange 2130 through bolts, and a thermocouple base 2300 arranged on the side wall of the rear housing 2200 is positioned on the same side as the thermocouple base 2300 arranged on the side wall of the front housing 2100.
As shown in fig. 3, the heating core special for the orifice plate turbulent flow type oilless pulverized coal igniter of the invention is formed by detachably connecting 6 second orifice plates 1220 (also called fixed turbolator and pulverized coal fluid orifice plates) and 3 first orifice plates 1210 (also called fixed ceramic tube orifice plates) in sequence from right to left, wherein the diameters of the first orifice plates 1210 and the second orifice plates 1220 are the same, 6 second orifice plates 1220 (also called fixed turbolator and pulverized coal fluid orifice plates) are arranged at intervals of 30 degrees per layer, and the positions of through holes 1211 on all the first orifice plates 1210 and the second orifice plates 1220 are correspondingly communicated with each other; the ceramic radiant tubes 1400 are inserted into the through holes 1211 of the first orifice plate 1210 and the second orifice plate 1220, and then the two heating sections 1101 of the spoiler 1100 are inserted into the ceramic radiant tubes 1400 respectively and fixed inside the first orifice plate 1210 and the second orifice plate 1220, wherein the number of the ceramic radiant tubes 1400 is 2 times that of the U-shaped spoiler; the tail end of the spoiler 1100 is connected to the power supply 1300.
As shown in fig. 4, the special U-shaped spoiler 1100 adopts a U-shaped structure, the spoiler 1100 adopts a high-temperature-resistant and oxidation-resistant silicon carbide rod material, and the silicon carbide rod is processed into a single spiral shape. The working temperature of the turbolator is 600-1200 ℃. The ignition temperature is changed to achieve the requirement of igniting different pulverized coal. The spoiler 1100 is made of silicon carbide rods, and the spoiler is made of silicon carbide rods, is high-temperature resistant and wear-resistant, and can automatically heat after being electrified. The cold end 1102 may be coupled to the main power circuit with aluminum braid or aluminum platinum.
As shown in fig. 5, the first orifice plate 1210 is a circular orifice plate made of silicon nitride, and 12 through holes 1211 for fixing the spoiler are formed on concentric circumferences, which are close to the edge of the orifice plate and far from the center of the circle, at equal angles, and the center distances of every two adjacent through holes 1211 are equal. The through hole 1211 is a sealed hole, and the first hole plate 1210 is also called a fixed ceramic hole plate, and functions to fix and seal the turbolator heating element and seal and isolate. The 12 through holes 1211 may fix 6U-shaped structure turbolator heating elements. The diameter of the through hole is the same as the outer diameter of the U-shaped turbolator.
As shown in fig. 7, the second orifice plate 1220 is a circular orifice plate made of silicon nitride, a central through hole 1221 is formed in the second orifice plate 1220, a first circle of through holes 1211 and a second circle of through holes 1211 are distributed around the periphery of the central through hole 1221 according to a distance away from the central through hole, the first circle of through holes 1211 are equiangularly distributed with 6 through holes 1211 on a concentric circumference near the central through hole 1221, the center distances of each two adjacent through holes 1211 are equal, and two adjacent through holes are mutually communicated to form a communication hole 1211a; the second circle of through holes 1211 is formed by arranging 12 through holes 1211 on concentric circumferences far from the central through hole 1221, wherein the center distances of every two adjacent through holes 1211 are equal, and the adjacent through holes of every two through holes 1211 are mutually communicated to form 3 communication holes 1211a; a plurality of pulverized coal fluid holes 1222 are distributed in the gaps between the first circle of through holes and the second circle of through holes; the outer circles of the second circle of through holes are provided with a plurality of pulverized coal fluid holes 1222 in an equal angle. The diameter of the through hole is the same as the outer diameter of the U-shaped spoiler, and the second orifice plate 1220 is used for fixing the spoiler and facilitating the circulation of pulverized coal fluid. The second orifice plate 1220 (fixed turbolator and pulverized coal fluid orifice plate) is divided into 6, which are staggered by 30 degrees according to each layer, pulverized coal flows outside the ceramic tube and flows out according to pulverized coal channels of the fixed turbolator and pulverized coal fluid orifice plate, and the pulverized coal flows generally move forward in a spiral direction due to the staggered 30 degrees of each layer of channels, meanwhile, due to the fact that a plurality of groups of ceramic heat-conducting pipes are arranged, turbulence is generated when pulverized coal flows, pulverized coal cracking is facilitated, and pulverized coal cracking time is prolonged.
Example 2
The only difference from example 1 is that the first orifice plate 1210 employed is the first orifice plate 1210 shown in fig. 6.
As shown in fig. 6 and 9, the first orifice plate 1210 is a circular orifice plate made of silicon nitride, 18 through holes 1211 for fixing the turbolator are formed in the first orifice plate 1210, wherein the 12 through holes 1211 are equiangularly arranged on a concentric circumference which is close to the edge of the orifice plate and far from the center of the circle, and the center distances of every two adjacent through holes 1211 are equal; the other 6 through holes 1211 are equally arranged on concentric circumferences near the center of the circle, wherein the center distances of every two adjacent through holes 1211 are equal; the through hole 1211 is a sealed hole, and the first hole plate 1210 is also called a fixed ceramic hole plate, and functions to fix and seal the turbolator heating element and seal and isolate. As shown in fig. 7, the 18 through holes 1211 may fix 9U-shaped structure spoiler heaters. The diameter of the through hole is the same as the outer diameter of the U-shaped turbolator.
Example 3
The only difference from embodiment 1 is that the second orifice plate 1220 used is the second orifice plate 1220 shown in fig. 8.
As shown in fig. 8, in the second orifice plate 1220 of the present invention, the second orifice plate 1220 is a circular orifice plate made of silicon nitride, a central through hole 1221 is formed in the second orifice plate 1220, a first circle of through holes 1211 and a second circle of through holes 1211 are distributed around the periphery of the central through hole 1221 according to a distance away from each other, the first circle of through holes 1211 are arranged with 6 through holes 1211 at equal angles on the concentric circumference near the central through hole 1221, and the center distances of every two adjacent through holes 1211 are equal; the second circle of through holes 1211 is formed by arranging 12 through holes 1211 on concentric circumferences far from the central through hole 1221, wherein the center distances of every two adjacent through holes 1211 are equal, and the adjacent through holes of every two through holes 1211 are mutually communicated to form 3 communication holes 1211a; a plurality of pulverized coal fluid holes 1222 are distributed in the gaps between the first circle of through holes and the second circle of through holes; the outer circles of the second circle of through holes are provided with a plurality of pulverized coal fluid holes 1222 in an equal angle. The diameter of the through holes is the same as the outer diameter of the U-shaped turbolator, the turbolator is the U-shaped turbolator, the number of the through holes is 2 times of the number of the U-shaped turbolator, and the second orifice plate 1220 is used for fixing the turbolator and facilitating the circulation of pulverized coal fluid.
The number of the second orifice plates 1220 (fixed turbolator and pulverized coal fluid orifice plates) is 6, the pulverized coal flows outside the ceramic tubes and flow out according to pulverized coal channels of the fixed turbolator and pulverized coal fluid orifice plates, and the pulverized coal flows generally move forward in a spiral direction due to the fact that the channels of each layer are staggered by 30 degrees, meanwhile, due to the fact that a plurality of groups of ceramic heat-conducting tubes are arranged, turbulence is generated when pulverized coal flows, pulverized coal cracking is facilitated, and pulverized coal cracking time is prolonged.
Example 4
Unlike in example 1, the first orifice plate was used as the first orifice plate 1220 shown in fig. 6, and the second orifice plate was used as the second orifice plate 1220 shown in fig. 7.
Example 5
The only difference from embodiment 1 is that the number of the first orifice plates 1210 may be 2 and the number of the second orifice plates 1220 may be 5.
Example 6
The only difference from embodiment 2 is that the number of the first orifice plates 1210 may be 2 and the number of the second orifice plates 1220 may be 5.
Example 7
The only difference from embodiment 3 is that the number of the first orifice plates 1210 may be 2 and the number of the second orifice plates 1220 may be 5.
Example 8
The only difference from embodiment 4 is that the number of the first orifice plates 1210 may be 2 and the number of the second orifice plates 1220 may be 5.
Example 9
The only difference from embodiment 1 is that the number of the first orifice plates 1210 may be 5 and the number of the second orifice plates 1220 may be 10.
Example 10
The only difference from embodiment 2 is that the number of the first orifice plates 1210 may be 5 and the number of the second orifice plates 1220 may be 10.
Example 11
The only difference from embodiment 3 is that the number of the first orifice plates 1210 may be 5 and the number of the second orifice plates 1220 may be 10.
Example 12
The only difference from embodiment 4 is that the number of the first orifice plates 1210 may be 5 and the number of the second orifice plates 1220 may be 10.
The turbolator with different thickness, aperture of the orifice plate and the number of the turbolator group are all within the protection scope of the patent.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. The orifice plate turbulent flow type oilless pulverized coal igniter is characterized by comprising a heating core and a reaction combustion chamber, wherein the heating core is arranged in the reaction combustion chamber, the reaction combustion chamber is provided with two openings along the length direction of the reaction combustion chamber, one end of the reaction combustion chamber is used as a power supply sealing hole of a power supply lead, and the other end of the reaction combustion chamber is provided with a fire outlet; the reaction combustion chamber comprises a front shell, a rear shell and a thermocouple seat, wherein the front shell and the rear shell are detachably connected, the thermocouple seat is arranged on the side wall of the radial direction of the front shell and the side wall of the radial direction of the rear shell, a feeding hole is formed in the radial direction of the front shell, the feeding hole and the thermocouple seat on the front shell are positioned at opposite positions, the heating core comprises a first pore plate, a second pore plate, a turbolator and a ceramic radiant tube, through holes which are at equal angles and are used for fixing the ceramic radiant tube are formed in the first pore plate and the second pore plate, and the turbolator is inserted in the ceramic radiant tube; the second pore plate is also provided with a pulverized coal fluid hole; the number of the ceramic radiation pipes is 2 times of that of the turbolator; the tail end of the turbolator is connected with a power supply, the turbolator adopts a U-shaped structure and is processed into a spiral shape, the turbolator is formed by sharing a heating section by two cold ends, the cold ends can be connected with a main power circuit by aluminum braids or aluminum platinum, the turbolator adopts a high-temperature resistant and oxidation resistant silicon carbide rod material, and the silicon carbide rod is processed into a single spiral shape.
2. The orifice plate vortex type oilless pulverized coal igniter of claim 1, wherein a first connection flange is fixedly installed at a front port of the front shell, a sealing cover plate is detachably connected to a rear port of the front shell, a power supply sealing hole is formed in the sealing cover plate, and a power supply can be electrically connected with the heating core through the power supply sealing hole.
3. The orifice plate vortex type oilless pulverized coal igniter of claim 2, wherein the front end of the rear shell is a fire outlet, the rear end of the rear shell is fixedly connected with a second connecting flange plate, the second connecting flange plate is detachably connected with the first connecting flange plate through bolts, and a thermocouple seat arranged on the side wall of the rear shell is positioned on the same side as a thermocouple seat arranged on the side wall of the front shell.
4. The orifice plate turbulent flow type oil-free pulverized coal igniter of claim 1, wherein the reaction combustion chamber adopts a composite lamellar structure, and comprises an inner layer, a heat insulation layer and a shell from inside to outside.
5. The orifice plate turbulent flow type oil-free pulverized coal igniter of claim 1, wherein the number of the first orifice plates is 2-5, and the number of the second orifice plates is 5-10.
6. The orifice plate turbulent flow type oil-free pulverized coal igniter of claim 5, wherein from right to left, 6 second orifice plates and 3 first orifice plates are connected in sequence in a detachable manner, the diameters of the first orifice plates and the second orifice plates are the same, wherein the 6 second orifice plates are arranged at an interval of 30 degrees per layer, and the positions of through holes on all the first orifice plates and the second orifice plates are communicated correspondingly; and the ceramic radiant tubes are inserted into the through holes of the first pore plate and the second pore plate, and then the two heating sections of the turbolator are respectively inserted into the ceramic radiant tubes and fixed inside the first pore plate and the second pore plate.
7. The orifice plate turbulent flow type oilless pulverized coal igniter of claim 5, wherein the first orifice plate is a circular orifice plate made of silicon nitride, 12 or 18 through holes for fixing the turbolator are formed at equal angles on a concentric circumference which is close to the edge of the orifice plate and far from a circle center, the 12 through holes are distributed at equal angles on the concentric circumference which is close to the edge of the orifice plate and far from the circle center, and the circle center distances of every two adjacent through holes are equal; the rest through holes are distributed on concentric circumferences close to the circle center, wherein the circle center distances of every two adjacent through holes are equal; the first pore plate is used for fixing and sealing the turbolator heating element and sealing and isolating the turbolator heating element.
8. The orifice plate turbulent flow type oilless pulverized coal igniter of claim 5, wherein the second orifice plate is a circular orifice plate made of silicon nitride, a central through hole is formed in the second orifice plate, a first circle of through holes and a second circle of through holes are distributed around the periphery of the central through hole according to a far distance, the first circle of through holes are distributed at equal angles on the concentric circumference near the central through hole, and the circle center distances of every two adjacent through holes are equal; the second circle of through holes are formed by arranging 12 through holes on the concentric circumference far away from the central through hole, and the center distances of every two adjacent through holes are equal, wherein the adjacent through holes of every two adjacent through holes are mutually communicated to form 3 communication holes; a plurality of pulverized coal fluid holes are distributed in the gaps between the first circle of through holes and the second circle of through holes; 12 pulverized coal fluid holes are distributed on the circumscribed circle of the second circle of through holes at equal angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417870.9A CN112984551B (en) | 2021-04-19 | 2021-04-19 | Orifice plate turbulent flow type oil-free pulverized coal igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417870.9A CN112984551B (en) | 2021-04-19 | 2021-04-19 | Orifice plate turbulent flow type oil-free pulverized coal igniter |
Publications (2)
| Publication Number | Publication Date |
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| CN112984551A CN112984551A (en) | 2021-06-18 |
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| TWM475563U (en) * | 2013-11-06 | 2014-04-01 | Wen-Ming Wu | Improved structure for stove fire combustion device |
| CN206073072U (en) * | 2016-08-31 | 2017-04-05 | 杭州老板电器股份有限公司 | A kind of burner cloud cluster ignition structure |
| CN207094660U (en) * | 2017-05-05 | 2018-03-13 | 宜兴市荣泰电器有限公司 | A kind of heat gun |
| CN211424383U (en) * | 2019-12-12 | 2020-09-04 | 松山湖材料实验室 | Porous medium combustion head and porous medium combustor |
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| CN105042585B (en) * | 2015-09-01 | 2017-07-04 | 山东富海泰来新能源科技有限公司 | Coal burner |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
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| CN2035043U (en) * | 1988-05-02 | 1989-03-29 | 夏敬释 | Igniter for coal stove |
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| TW342919U (en) * | 1997-06-11 | 1998-10-11 | Zhang Mu Shu | Improvement for ignition apparatus of stove |
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| CN102798144A (en) * | 2012-08-29 | 2012-11-28 | 湖南华菱涟源钢铁有限公司 | Handheld insulative discharging combustible gas igniter |
| TWM475563U (en) * | 2013-11-06 | 2014-04-01 | Wen-Ming Wu | Improved structure for stove fire combustion device |
| CN206073072U (en) * | 2016-08-31 | 2017-04-05 | 杭州老板电器股份有限公司 | A kind of burner cloud cluster ignition structure |
| CN207094660U (en) * | 2017-05-05 | 2018-03-13 | 宜兴市荣泰电器有限公司 | A kind of heat gun |
| CN211424383U (en) * | 2019-12-12 | 2020-09-04 | 松山湖材料实验室 | Porous medium combustion head and porous medium combustor |
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| CN112984551A (en) | 2021-06-18 |
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