CN112984551A - 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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- CN112984551A CN112984551A CN202110417870.9A CN202110417870A CN112984551A CN 112984551 A CN112984551 A CN 112984551A CN 202110417870 A CN202110417870 A CN 202110417870A CN 112984551 A CN112984551 A CN 112984551A
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- pulverized coal
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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
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Abstract
The invention discloses a pore plate turbulent flow type oil-free pulverized coal igniter, which comprises: the device 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, 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 includes procapsid, back casing and thermocouple seat, procapsid and back casing can dismantle the connection, the procapsid with be provided with the thermocouple seat on the radial direction lateral wall of back casing, the feed inlet has been seted up in the procapsid radial direction, the feed inlet with thermocouple seat on the procapsid is in relative position. The orifice plate turbulent flow type oil-free pulverized coal igniter disclosed 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 ensures that pulverized coal fully absorbs heat to react and is quickly cracked into combustible gas.
Description
Technical Field
The present invention relates to an igniter. More particularly, the invention relates to a hole plate turbulent flow type oil-free pulverized coal igniter.
Background
Along with the increasing requirement of environmental protection, the prior burners used for the rotary kiln of the coal-fired boiler 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 high, the plasma ignition in recent years can achieve the effects of oil-free ignition and stable combustion, but the requirements on the coal type are limited, the low-heat value coal cannot be directly ignited, the application of the low-heat value coal is limited, and other oil-free ignition devices are continuously appeared in recent years, but are limited by high-temperature resistant materials and structures, certain defects exist in safety performance, and the risk of the large-scale boiler in safety is large.
The existing igniter has the problems of difficult disassembly and replacement, low combustion efficiency and the like, so that the development of the orifice plate turbulence 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 can realize oil-free ignition and stable combustion, has a large adaptation 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:
a pore plate turbulence type oil-free pulverized coal igniter comprises a heating core and a reaction combustion chamber, wherein the heating core is placed 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 used as a fire outlet; the reaction combustion chamber includes procapsid, back casing and thermocouple seat, procapsid and back casing can dismantle the connection, the procapsid with be provided with the thermocouple seat on the radial direction lateral wall of back casing, the feed inlet has been seted up in the procapsid radial direction, the feed inlet with thermocouple seat on the procapsid is in relative position.
Preferably, the first connecting flange of preceding port fixed mounting of procapsid, the sealed apron of connection can be dismantled to the back port of procapsid, be equipped with the sealed hole of power on the sealed apron, through the sealed hole of power can with the power with heating core electric connection.
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, the second connecting flange is detachably connected with the first connecting flange through bolts, and a thermocouple seat arranged on the side wall of the rear shell is positioned at the same side as a thermocouple seat arranged on the side wall of the front shell.
Preferably, the reaction combustion chamber adopts a composite layered structure and sequentially comprises an inner layer, a heat insulation layer and an outer shell from inside to outside.
Preferably, the heating core comprises a first pore plate, a second pore plate, a turbolator and a ceramic radiation tube, wherein the first pore plate and the second pore plate are respectively provided with through holes with equal angles for fixing the ceramic radiation tube, and the turbolator is inserted into the ceramic radiation tube; the second pore plate is also provided with a pulverized coal fluid hole; the number of the ceramic radiant tubes is 2 times of that of the turbolators; the tail end of the turbolator is connected with a power supply.
Preferably, the turbolator is for adopting U type structure, processes into the helical shape, the turbolator is by a heating section of two cold branches sharing. The cold end may be coupled to the main power circuit with an aluminum braid or aluminum foil. The turbolator adopts high temperature resistant anti-oxidant elema material, the elema is processed into single spiral shape.
Preferably, the number of the first orifice plate is 2-5, and the number of the second orifice plate is 5-10.
Preferably, from right to left, the first pore plate and the second pore plate are detachably connected with each other by 6 second pore plates and 3 first pore plates in sequence, the diameters of the first pore plates and the second pore plates are the same, wherein the 6 second pore plates are staggered by 30 degrees in each layer, and the positions of through holes on all the first pore plates and the second pore plates are correspondingly communicated with each other; and ceramic radiation 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 radiation 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, 12 or 18 through holes for fixing the turbolators are arranged on a concentric circumference close to the edge of the pore plate and far from the center of a circle at equal angles, wherein the 12 through holes are arranged on the concentric circumference close to the edge of the pore plate and far from the center of a circle at equal angles, and the distance between centers of every two adjacent through holes is equal; the rest through holes are arranged on the concentric circumference close to the circle center in an equal way, wherein the circle center distance of every two adjacent through holes is equal. The first pore plate is used for fixing the sealed turbolator heating body and sealing and isolating the turbolator heating body.
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 in the concentric circumference close to the central through hole at equal angles, and the circle center distances of every two adjacent through holes are equal; the second circle of through holes are 12 through holes distributed on the concentric circumference far away from the central through hole, the circle center distance of every two adjacent through holes is equal, wherein the adjacent through holes at every two through holes are mutually communicated to form 3 communicating holes; a plurality of pulverized coal fluid holes are distributed in the gap between the first circle of through holes and the second circle of through holes; 12 pulverized coal fluids are distributed on the circumcircle of the second circle of through holes at equal angles.
The invention at least comprises the following beneficial effects:
(1) when turbolator heating element reached life or broke down, can open sealed apron, take turbolator heating element out, heating element and orifice plate are good the back in outside equipment, and it is internal to wholly insert the cavity, easily equipment and change.
(2) The turbolator is fixed with an internal pore plate through a ceramic-resistant radiant tube, and a turbolator ceramic trepanning hole and a fuel through hole are formed in the pore plate. The pore plate is divided into a fixed ceramic tube pore plate, a fixed turbolator and a pulverized coal fluid pore plate, the fixed ceramic tube pore plate is used for fixing and sealing a turbolator heating body and sealing and isolating, the fixed turbolator and the pulverized coal fluid pore plate are divided into 6 groups, the fixed turbolator and the pulverized coal fluid pore plate are staggered by 30 degrees according to each layer and are used as safe fixing of the ceramic tube and a pulverized coal flow channel on the outer wall of the ceramic tube, holes which are beneficial to pulverized coal fluid to pass through are formed to increase the contact area of the pulverized coal fluid and the turbolator, pulverized coal is cracked into combustible gas conveniently, and pulverized coal ignition is; the through holes in the first pore plate and the second pore plate are convenient for fixing the turbolators and the radiation guide pipes outside the turbolators, the turbolators are prevented from being easily broken due to direct stress, so that the turbolators are protected, meanwhile, the turbolators heat the radiation ceramic tubes through heat radiation, and pulverized coal cracking and burning outside the ceramic tubes are facilitated.
(3) The turbulence plate adopts a turbulence structure, so that the heat transfer temperature difference can be increased, the heat transfer coefficient is increased, and the mixture of the pulverized coal and the air on the surface of the turbulence plate generates a dispersion flow effect, so that the fluid is changed into turbulence, the pulverized coal can fully absorb heat to react, and the combustible gas can be quickly cracked.
(4) The heating core special for the orifice plate turbulent flow type oil-free 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 structural diagram of the orifice plate turbulent flow type oil-free pulverized coal igniter.
FIG. 2 is a schematic diagram of the composite layered structure of the reaction combustion chamber of the orifice plate turbulent flow type oil-free pulverized coal igniter of the invention.
FIG. 3 is a schematic structural view of a heating core dedicated for a pore plate turbulent flow type oil-free pulverized coal igniter of the invention.
FIG. 4 is a perspective view of a U-shaped spoiler dedicated for a heating core dedicated for a pore plate spoiler type oil-free pulverized coal igniter of the present invention.
Fig. 5 is a schematic structural view of a first orifice plate 1210 of the orifice plate turbulence type oil-free pulverized coal igniter dedicated heating core of the present invention.
Fig. 6 is a schematic structural view of a first orifice plate 1210 of the orifice plate turbulence type oil-free pulverized coal igniter dedicated heating core of the present invention.
Fig. 7 is a schematic structural view of a second orifice plate 1220 of the orifice plate turbulence type oil-free pulverized coal igniter dedicated heating core of the present invention.
Fig. 8 is a schematic structural view of a second orifice plate 1220 of the orifice plate turbulence type oil-free pulverized coal igniter dedicated heating core of the present invention.
Fig. 9 is a schematic structural view illustrating that the first orifice 1210 of the orifice-plate turbulence type oil-free pulverized coal igniter dedicated heating core of fig. 6 is inserted into a U-shaped turbulator.
In the drawing, 1000-heating core, 1100-U type 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-hot layer, C3-outer shell, 2100-front shell, 2110-feed inlet, 2111-flange, 2120-power supply sealing hole, 2121-sealing cover plate, 2130-first connecting flange plate, 2200-rear shell, 2210-second connecting flange plate, 2220-fire outlet and 2300-thermocouple seat.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
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 present invention includes a heating core 1000 and a reaction combustion chamber 2000, the heating core 1000 is a plurality of U-shaped turbolators 1100 installed in a ceramic radiation tube 1400, the ceramic radiation 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 and oxidation resistant silicon carbon rod, the ceramic radiation tube 1400 adopts a silicon carbide composite material with good heat conductivity, the reaction combustion chamber 2000 has a steel shell structure on the outer shell, a high temperature resistant silicon carbide composite material on the inner layer C1, 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 of the reaction combustion chamber is used as a power source sealing hole 2120 of a lead wire of the power source 1300, the other end of the reaction combustion chamber is used as a fire outlet 2220, and a fuel feed inlet 2110 is arranged in the radial direction.
The method specifically comprises the following steps: comprises a heating core 1000 and a reaction combustion chamber 2000, wherein the heating core 1000 is placed inside the reaction combustion chamber 2000; the reaction combustion chamber 2000 comprises a front housing 2100, a rear housing 2200 and a thermocouple seat 2300, wherein the front housing 2100 and the rear housing 2200 are detachably connected, the thermocouple seat 2300 is arranged on the side walls of the front housing 2100 and the rear housing 2200, a feed inlet 2110 is formed in the front housing 2100, the feed inlet 2110 and the thermocouple seat 2300 on the front housing 2100 are in opposite positions, a first connecting flange 2130 is fixedly mounted at the front port of the front housing 2100, a sealing cover plate 2121 is detachably connected to the rear port of the front housing 2100, a power supply sealing hole 2120 is formed in the sealing cover plate 2121, and a power supply 1300 can be electrically connected with the heating core 1000 through the power supply sealing hole 2120. The front end of the rear housing 2200 is a fire outlet 2220, the rear end of the rear housing 2200 is fixedly connected with a second connecting flange 2210, the second connecting flange 2210 and the first connecting flange 2130 are detachably connected through bolts, and a thermocouple block 2300 arranged on the side wall of the rear housing 2200 is located on the same side as a thermocouple block 2300 arranged on the side wall of the front housing 2100.
As shown in fig. 3, the heating core dedicated for the orifice plate turbulent flow type oil-free pulverized coal igniter of the present invention is sequentially detachably connected from right to left by 6 second orifice plates 1220 (also called fixed turbulators and pulverized coal fluid orifice plates) and 3 first orifice plates 1210 (also called fixed ceramic tube orifice plates), the diameters of the first orifice plates 1210 and the second orifice plates 1220 are the same, wherein the 6 second orifice plates 1220 (also called fixed turbulators and pulverized coal fluid orifice plates) are staggered by 30 degrees per layer, and the positions of the through holes 1211 on all the first orifice plates 1210 and the second orifice plates 1220 are correspondingly communicated with each other; the ceramic radiation 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 turbolator 1100 are respectively inserted into the ceramic radiation tubes 1400 and fixed inside the first orifice plate 1210 and the second orifice plate 1220, wherein the number of the ceramic radiation tubes 1400 is 2 times of the number of the U-shaped turbolators; the tail end of the turbolator 1100 is connected to a power supply 1300.
As shown in fig. 4, the special U-shaped turbolator 1100 adopts a U-shaped structure, the turbolator 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 requirement of igniting different pulverized coals is met by changing the ignition temperature. The turbolator is made by a heating section 1101 that two cold legs 1102 share through special technology, and the material of commonly using is high accuracy carborundum powder, and the turbolator 1100 adopts the preparation of silicon carbide stick, and this material is high temperature resistant, stand wear and tear to can spontaneous heating after can switching on. The cold end 1102 may be coupled to the main power circuit with an aluminum braid or aluminum foil.
As shown in fig. 5, the first aperture plate 1210 is a circular aperture plate made of silicon nitride, 12 through holes 1211 for fixing the turbolator are formed at equal angles on a concentric circumference close to the edge of the aperture plate and far from the center of the circle, and the distances between the centers of every two adjacent through holes 1211 are equal. The through hole 1211 is a sealing hole, and the first hole plate 1210 is also called a fixed ceramic tube hole plate and is used for fixing and sealing the turbolator heating element and sealing and isolating the turbolator heating element. The 12 through holes 1211 can fix 6 turbolator heaters with U-shaped structures. 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 on 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, the first circle of through holes 1211 and the second circle of through holes 1211 are distributed on a concentric circumference close to the central through hole 1221 at equal angles, the distance between the centers of every two adjacent through holes 1211 is equal, wherein two adjacent through holes are communicated with each other to form a communication hole 1211 a; the second circle of through holes 1211 is formed by arranging 12 through holes 1211 on a concentric circumference far away from the central through hole 1221, the distance between the centers of every two adjacent through holes 1211 is equal, wherein every two adjacent through holes 1211 are communicated with each other to form 3 communication holes 1211 a; a plurality of pulverized coal fluid holes 1222 are distributed in the gap between the first circle of through holes and the second circle of through holes; and a plurality of pulverized coal fluid holes 1222 are distributed on the circumcircle of the second circle of through holes at equal angles. The diameter of the through hole is the same as the outer diameter of the U-shaped turbolator, and the second orifice plate 1220 is used for fixing the turbolator and facilitating the circulation of the pulverized coal fluid. Second orifice plate 1220 (fixed turbolator and buggy fluid orifice plate) divide into 6, stagger 30 degrees arrangements according to every layer, the outside buggy of ceramic pipe flows according to the buggy passageway of fixed turbolator and buggy fluid orifice plate, because every layer of passageway staggers 30 degrees, buggy fluid can generally move ahead according to spiral direction, owing to be equipped with multiunit ceramic heat pipe simultaneously, can produce the torrent when the buggy flows, be favorable to the buggy schizolysis, increase buggy schizolysis time.
Example 2
The only difference from embodiment 1 is that the first orifice plate 1210 used 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 12 through holes 1211 are arranged at equal angles on a concentric circumference close to the edge of the orifice plate and far from the center of the circle, and the distance between the centers of every two adjacent through holes 1211 is equal; the other 6 through holes 1211 are arranged on the concentric circumference close to the circle center, wherein the circle center distance of every two adjacent through holes 1211 is equal; the through hole 1211 is a sealing hole, and the first hole plate 1210 is also called a fixed ceramic tube hole plate and is used for fixing and sealing the turbolator heating element and sealing and isolating the turbolator heating element. As shown in FIG. 7, the 18 through holes 1211 can fix 9 turbolator heaters with U-shaped structures. 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, for 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 on 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, the first circle of through holes 1211 is distributed on a concentric circumference near the central through hole 1221 at an equal angle, and the distance between centers of every two adjacent through holes 1211 is equal; the second circle of through holes 1211 is formed by arranging 12 through holes 1211 on a concentric circumference far away from the central through hole 1221, the distance between the centers of every two adjacent through holes 1211 is equal, wherein every two adjacent through holes 1211 are communicated with each other to form 3 communication holes 1211 a; a plurality of pulverized coal fluid holes 1222 are distributed in the gap between the first circle of through holes and the second circle of through holes; and a plurality of pulverized coal fluid holes 1222 are distributed on the circumcircle of the second circle of through holes at equal angles. The diameter of through-hole with the external diameter of U type turbolator is the same, the turbolator is U type turbolator, through-hole quantity is 2 times of U type turbolator quantity, the effect of second orifice plate 1220 is fixed turbolator to and do benefit to the circulation of buggy fluid.
Second orifice plate 1220 (fixed turbolator and buggy fluid orifice plate) is 6, stagger 30 degrees arrangements according to every layer, flow according to the buggy passageway of fixed turbolator and buggy fluid orifice plate at the outside buggy of ceramic pipe, because every layer of passageway staggers 30 degrees, buggy fluid can generally move ahead according to spiral direction, owing to be equipped with multiunit ceramic heat pipe simultaneously, can produce the torrent when the buggy flows, be favorable to the buggy schizolysis, increase buggy schizolysis time.
Example 4
The difference from example 1 is that the first orifice plate used was the first orifice plate 1220 shown in fig. 6, and the second orifice plate used was 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 plate 1210 may be 2, and the number of the second orifice plate 1220 may be 5.
Example 6
The only difference from embodiment 2 is that the number of the first orifice plate 1210 may be 2, and the number of the second orifice plate 1220 may be 5.
Example 7
The only difference from embodiment 3 is that the number of the first orifice plate 1210 may be 2, and the number of the second orifice plate 1220 may be 5.
Example 8
The only difference from embodiment 4 is that the number of the first orifice plate 1210 may be 2, and the number of the second orifice plate 1220 may be 5.
Example 9
The only difference from embodiment 1 is that the number of the first orifice plate 1210 may be 5, and the number of the second orifice plate 1220 may be 10.
Example 10
The only difference from embodiment 2 is that the number of the first orifice plate 1210 may be 5, and the number of the second orifice plate 1220 may be 10.
Example 11
The only difference from embodiment 3 is that the number of the first orifice plate 1210 may be 5, and the number of the second orifice plate 1220 may be 10.
Example 12
The only difference from embodiment 4 is that the number of the first orifice plate 1210 may be 5, and the number of the second orifice plate 1220 may be 10.
The diameters of the turbolators and the hole plates with different thicknesses and the number of turbolators are all in the protection scope of the patent.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. A pore plate turbulence type oil-free 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, 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 includes procapsid, back casing and thermocouple seat, procapsid and back casing can dismantle the connection, the procapsid with be provided with the thermocouple seat on the radial direction lateral wall of back casing, the feed inlet has been seted up in the procapsid radial direction, the feed inlet with thermocouple seat on the procapsid is in relative position.
2. The orifice plate turbulent flow type oil-free pulverized coal igniter as claimed in claim 1, wherein the front port of the front housing is fixedly provided with a first connecting 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 sealing hole, and a power supply can be electrically connected with the heating core through the power sealing hole.
3. The orifice plate turbulent flow type oil-free pulverized coal igniter as claimed in 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, the second connecting flange is detachably connected with the first connecting flange through bolts, and a thermocouple seat arranged on the side wall of the rear shell is positioned at 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 as claimed in claim 1, wherein the reaction combustion chamber adopts a composite layered structure and sequentially comprises an inner layer, a heat insulation layer and a shell from inside to outside.
5. The orifice plate turbulence type oil-free pulverized coal igniter as claimed in claim 1, wherein the heating core comprises a first orifice plate, a second orifice plate, a turbulator and a ceramic radiant tube, the first orifice plate and the second orifice plate are respectively provided with through holes with equal angles for fixing the ceramic radiant tube, and the turbulator 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 radiant tubes is 2 times of that of the turbolators; the tail end of the turbolator is connected with a power supply.
6. The orifice plate turbulent flow type oil-free pulverized coal igniter as claimed in claim 5, wherein the turbulator is of a U-shaped structure and is processed into a spiral shape, the two cold ends of the turbulator share one heating section, and the cold ends can be connected with the main power circuit through aluminum braids or aluminum platinum. The turbolator adopts high temperature resistant anti-oxidant elema material, the elema is processed into single spiral shape.
7. The orifice plate turbulent flow type oil-free pulverized coal igniter as claimed in claim 5, wherein the number of the first orifice plate is 2-5, and the number of the second orifice plate is 5-10.
8. The orifice plate turbulence type oil-free pulverized coal igniter as claimed in claim 5, wherein from right to left, 6 second orifice plates and 3 first orifice plates are detachably connected with each other in sequence, the diameters of the first orifice plates and the second orifice plates are the same, wherein the 6 second orifice plates are staggered by 30 degrees per layer, and through holes on all the first orifice plates and the second orifice plates are correspondingly communicated with each other; and ceramic radiation 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 radiation tubes and fixed inside the first pore plate and the second pore plate.
9. The orifice plate turbulent flow type oil-free pulverized coal igniter as claimed in claim 5, wherein the first orifice plate is a circular orifice plate made of silicon nitride, 12 or 18 through holes for fixing the turbolators are formed on a concentric circumference close to the edge of the orifice plate and far from the center of a circle at equal angles, wherein the 12 through holes are arranged on the concentric circumference close to the edge of the orifice plate and far from the center of a circle at equal angles, and the distance between the centers of every two adjacent through holes is equal; the rest through holes are arranged on the concentric circumference close to the circle center in an equal way, wherein the circle center distance of every two adjacent through holes is equal. The first pore plate is used for fixing the sealed turbolator heating body and sealing and isolating the turbolator heating body.
10. The orifice plate turbulence type oil-free pulverized coal igniter as claimed in 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 distance away from the central through hole, the first circle of through holes are distributed with through holes or communication holes at equal angles on a concentric circumference close to the central through hole, and the distances between centers of every two adjacent through holes are equal; the second circle of through holes are 12 through holes distributed on the concentric circumference far away from the central through hole, the circle center distance of every two adjacent through holes is equal, wherein the adjacent through holes at every two through holes are mutually communicated to form 3 communicating holes; a plurality of pulverized coal fluid holes are distributed in the gap between the first circle of through holes and the second circle of through holes; 12 pulverized coal fluids are distributed on the circumcircle of the second circle of through holes at equal angles.
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| 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 |
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| 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 |
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| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
| 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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| CN2035043U (en) * | 1988-05-02 | 1989-03-29 | 夏敬释 | Igniter for coal stove |
| CN2041776U (en) * | 1988-12-31 | 1989-07-26 | 李合印 | Electric igniting shovel for domestic coal stove |
| TW342919U (en) * | 1997-06-11 | 1998-10-11 | Zhang Mu Shu | Improvement for ignition apparatus of stove |
| CN101754504A (en) * | 2010-01-19 | 2010-06-23 | 江苏丰东热技术股份有限公司 | Zone-control radiant tube heater |
| CN102798144A (en) * | 2012-08-29 | 2012-11-28 | 湖南华菱涟源钢铁有限公司 | Hand-held insulation discharge type combustible gas igniter |
| TWM475563U (en) * | 2013-11-06 | 2014-04-01 | Wen-Ming Wu | Improved structure for stove fire combustion device |
| CN105042585A (en) * | 2015-09-01 | 2015-11-11 | 山东华臻重工有限公司 | Pulverized coal burner |
| 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 |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
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