CN207247210U - A kind of burner - Google Patents

Abstract

The utility model discloses a kind of burner, belongs to coal dust gasification field.It includes back segment steel component and leading portion bulk ceramics prefabricated component, back segment steel component includes gas sleeve, casing air, coal dust casing, gasifying agent casing and ignition power pole bar, leading portion bulk ceramics prefabricated component is a structure for including the conical surface, it includes the leading portion burning gallery with ring, leading portion gasifying agent passage and leading portion throw powder passage, leading portion burning gallery includes the steady flame section of hourglass-shaped inner cavity, steady flame section is connected with air duct, leading portion is thrown powder passage and is connected with back segment throwing powder passage, leading portion gasifying agent passage is connected with back segment gasifying agent passage, the centerline axis parallel of the outlet of leading portion gasifying agent passage and the outlet of steady flame section with leading portion bulk ceramics prefabricated component, the export direction that leading portion throws powder passage expands inclination towards the export direction side of leading portion gasifying agent passage.The utility model solves the problems, such as that burner ignition is difficult, easy cutoff, has the characteristics that ignition success rate is high, flame holding is good, heat resistant and wear resistant damage.

Description

A kind of burner

Technical field

The utility model belongs to coal dust gasification field, more specifically to a kind of burner.

Background technology

Existing gas generator start-up burner generally use oil burner or gas burner, its structure are in coal gas Generation furnace wall set-point ignition combustor, igniter and combustion air passage, the ignited device of start-up burner is lighted, combustion-supporting Under the drive of air into gas generator jet flames, so as to give gas generator heat temperature raising, treat warm in gas generator Degree is when reaching requirement, then (throws coal burner by throwing coal burner either independent, can also be integrated with start-up burner Compound burner) spray coal dust and gasifying agent, gas generator into gas generator and start to react.Gas generator is just After paradoxical reaction operates steadily, start-up burner starts to stop oil spout or combustion gas.Although start-up burner and igniter can adopt With heat resisting steel, and coordinate water cooling plant, but can only generally also be worked normally below 450 DEG C, so in gas generator just Often need to extract start-up burner out gas generator during work, or increase other passages to be passed through other media to ignition Device cooling is protected, and prevents that start-up burner is ablated.

Based on existing material and the cooling means used, such start-up burner is directly inserted into gas generator, Still facing has ignition difficulties, cutoff probability height, and heat resistant and wear resistant damage poor performance, firing up and throwing powder are complicated, operation dimension Protect the problems such as difficulty is big, and danger is high, and burner life is short, and use cost is high.

Firstly, since after normal reaction in gas generator temperature in the range of 1200~1600 DEG C, and coal gas occur Gasifying agent swirl strength is very high in stove, thus the radiations heat energy that start-up burner end is subject to is big, temperature is high, to avoid high temperature Radiation, it is necessary to as far as possible start-up burner arrangement more rearward, but arrange excessively start-up burner can be caused to spray rearward Fuel combustion it is insufficient；In addition, under normal circumstances, in order to make gas generator that there is preferable gasification reaction flow field, igniting The length that burner stretches into gas generator then must be enough length, in this case burner must bear higher temperature Degree, thus cause the service life of burner and igniter shorter.

Secondly as start-up burner is extend into gas generator, gas generator flow field swirl strength during work Larger, coal dust and gasifying agent are under Swirling Flow effect, it is easy to burner cutoff is caused, thus, combustion of lighting a fire in actual motion Burner usually needs repeatedly to light a fire again, in addition, the Swirling Flow of high intensity also can be to the end of burner in gas generator Larger abrasion is formed, if throwing the combination burner that coal burner is integrated with start-up burner, burner internal It is also more serious to throw the erosive wear that coal channel is subject to.

Chinese invention patent, publication number：CN104974797B, publication date：On July 11st, 2017, disclose for two sections The multifunctional gasification burner of formula dry coal powder airflow bed gasification furnace.The invention is characterized in that the head of a flame detecting pipe is placed in Center in the main burner, the outer layer of flame detecting pipe are equipped with blast tube, and the head of the blast tube is equipped with combustion gas Nozzle；The outer layer of the blast tube is equipped with combustion air passage, and the head of the combustion air passage is equipped with cyclone structure；The flame Detect tube head to the space formed between main burner head be precombustion chamber；Burning torch, flame are equipped with the combustion wind passage The afterbody of detection pipes is equipped with flame detecting device.The invention is helped according to pre-vaporized room and the structure design of main vapourizing furnace two-period form Wind is fired after cyclone structure, it is then past with eddy flow shape in the rotational flow field primary combustion that precombustion chamber produces with combustion gas mixing Jet flames in burner hearth outside main burner, flame burn after being mixed with the coal dust that coal nozzle sprays in burner hearth, but Its shortcoming is：(1) space of precombustion chamber is larger, and when starting to be passed through combustion air and combustion gas, combustion air and combustion gas are easily spread, Especially spread into burner hearth, thus the aggregated mixed effect of combustion air and combustion gas near burning torch is unsatisfactory, this is one Determine to cause ignition difficulties in degree；(2) the flame rigidity preliminarily formed is weaker, the coal dust being passed through rotational flow field effect under, Strong interference is easily caused to flame, it is easy to cause cutoff；(3) a part of coal dust acts on after entering precombustion chamber in rotational flow field Under larger abrasion can be also formed to the end of burner.

Chinese utility model patent, publication number：CN206033686U, publication date：On August 22nd, 2016, discloses one kind Coal gasification assembled nozzle.It includes：Central tube, the inlet side of central tube are provided with igniting fuel gas inlet, the outside of central tube Igniting casing air, the first cooling water pipe, oxidant casing, the second cooling water pipe, coal dust casing, the 3rd are arranged with successively Cooling water pipe, the outlet for casing air of lighting a fire stretch out relative to the outlet of central tube, to limit the first pre-mix zone, are used for Mixed firing combustion gas and igniting air；The outlet of coal dust casing stretches out relative to the outlet of oxidant casing, to limit Second pre-mix zone, for hybrid oxidant and coal dust；Oxidant casing is tapered into close to one end aperture of outlet, and oxidant The inner wall in the exit of casing is circumferentially arranged spinning disk, which realizes oxidant and the uniform gas-solid of coal dust mixes Close, so that coal dust firing is stablized in pulverized coal gasification furnace, efficiency of carbon con version is high.The utility model also exists in Publication No.： The problem of patent of invention of CN104974797B is identical, i.e. its shortcoming are：(1) igniting combustion gas and igniting air are easily outside Diffusion, thus light a fire combustion gas and light a fire air collected around in igniter mixing effect it is unsatisfactory, therefore, there is also point The problem of fiery difficult；(2) first pre-mix zones are easily by external interference, and coal dust is under rotational flow field effect, the fire easily to preliminarily forming Flame causes strong interference, it is easy to causes cutoff.In addition, in application process Flame to have to pass through first pre- for the utility model Confounding could heat coal dust gasification, thus the first pre-mix zone is while protecting flame interference-free, and also extending flame must wear Therefore the length crossed, the rigidity of flame also reduce, thereby reduce coal dust gasification reaction effect in stove.

Chinese utility model patent, publication number：CN206109325U, publication date：On April 19th, 2017, disclose fine coal Gasify assembled nozzle.Including：Central tube, central tube are provided with igniting fuel gas inlet on the side wall of entrance；Outside central tube Portion is arranged with igniting casing air, gasifying agent casing, coal dust casing and cooling water pipe successively；The outlet of gasifying agent casing, coal The outlet of powder casing, the outlet of cooling water pipe stretch out successively relative to the outlet of central tube, to limit pre-mix zone, use In the preliminary mixing of gasifying agent and fine coal；Wherein, pre-mix zone is the cone space that sectional area gradually increases.The powder of the utility model Coal gasification assembled nozzle, realizes the uniform gas-solid mixing of gasifying agent and coal dust, so that the coal dust firing in gasification furnace is stablized, Carbon conversion ratio is high.Its shortcoming is：(1) the problem of equally existing above-mentioned ignition difficulties；(2) pre-mix zone rotational flow intensity inside is big, After the gasifying agent and coal dust that are passed through, it is easy to cause burner cutoff, thus point again is needed repeatedly during coal dust gasification Fire.

Chinese utility model patent, publication number：CN204607936U, publication date：On September 2nd, 2015, discloses a kind of length Service life burner of coal gasification process.It is composed of face before pulverized coal gun, combustion-supporting gas spray gun, steam spraying gun and burner, described Combustion-supporting gas spray gun is sleeved on outside pulverized coal gun, is connected with the Ifold flange of pulverized coal gun, and the steam spraying gun is sleeved on combustion-supporting gas Outside spray gun, it is connected with the Ifold flange of combustion-supporting gas spray gun, the gun barrel front end of steam spraying gun passes through fastener and steam burner sleeve Connection, steam burner sleeve front end set heat radiation screening plate, form face before burner.Face is equal before coal dust channel, burner sleeve and burner It is made of ceramic material, whole burner lightweight refracrory module is separated with furnace high-temperature radiation, eliminates traditional burner Cooling system, efficiently solve high temperature corrosion, fatigue cracking and the erosive wear problem of process burner, meet commercial Application More than 1 year at full capacity, the requirement of long-term operation.The utility model is suitable for the part such as coal gasification or coal water slurry gasification and fires Burn gasification process.Its shortcoming is：(1) combustion-supporting gas burner sleeve and half Laval Wind guiding device form combustion-supporting gas rotation Wind exports, and after the plasma ignition device installed in Gas Pipe lights combustion gas, half Laval Wind guiding device is to preliminary shape Into flame interfere, hinder igniting to a certain extent；(2) sprayed by the combustion gas of Gas Pipe and combustion-supporting gas spray gun Combustion-supporting gas mixing ignition formed flame temperature it is higher, due to the cooling effect of no cooling system, thus gas pipeline Deng all the time be in high temperature under, easily cause thermal fatigue cracking；(3) by the coal dust jet stream of ceramic coal dust jet pipe to annular gas passage The flame that outlet sprays forms interference, easily causes ignition difficulties, cutoff.

The content of the invention

1st, to solve the problems, such as

For existing start-up burner there are the problem of ignition difficulties, easy cutoff, the utility model provides a kind of combustion Burner, it has the characteristics that, and ignition success rate is high, flame holding is good, wear-resisting property and resistance to elevated temperatures are excellent.

2nd, technical solution

To solve the above problems, this hair utility model adopts the following technical scheme that.

A kind of burner, including back segment steel component and leading portion bulk ceramics prefabricated component, the leading portion bulk ceramics are pre- Product is fixed at the front end of the back segment steel component；

The back segment steel component includes：

Gas sleeve, the gas sleeve is interior to have blast tube；

Casing air, the casing air are sheathed on the outside of the gas sleeve, the inner wall of the casing air and institute State and limit air duct between the outer wall of gas sleeve；

Coal dust casing, the coal dust casing are sheathed on the outside of the casing air, the inner wall of the coal dust casing and institute State and back segment is limited between the outer wall of casing air throw powder passage；

Gasifying agent casing, the gasifying agent casing are sheathed on the outside of the coal dust casing, the gasifying agent casing it is interior Back segment gasifying agent passage is limited between the outer wall of wall and the coal dust casing；

Ignition power pole bar, the igniting are additionally provided between the outer wall of the inner wall of the casing air and the gas sleeve The front end of electrode stem is flushed with the port of export of the gas sleeve；

The leading portion bulk ceramics prefabricated component is a structure for including the conical surface, it further includes same ring triple channel, described Intersect with the conical surface outlet with ring triple channel；

The same ring triple channel is respectively to be located at leading portion burning gallery, the outside at leading portion bulk ceramics prefabricated component center Leading portion gasifying agent passage, and the leading portion throwing powder passage between leading portion burning gallery and leading portion gasifying agent passage, before described Section burning gallery includes sealing construction section and steady flame section, and the outside diameter of the internal diameter and the casing air of the sealing construction section matches Conjunction is fixedly connected, and the inner cavity of the steady flame section is hourglass-shaped, and connect with the air duct, the leading portion throw powder passage and The back segment throws the connection of powder passage, and the leading portion gasifying agent passage is connected with the back segment gasifying agent passage；

The exporting of the leading portion gasifying agent passage, the steady flame section outlet with the leading portion bulk ceramics prefabricated component Centerline axis parallel；

The export direction that the leading portion throws powder passage expands inclination towards the export direction side of the leading portion gasifying agent passage.

Further, the internal diameter of the outlet ends of the steady flame section is equal with the internal diameter of the casing air.

Further, the leading portion gasifying agent passage is that the structure expanded afterwards is first shunk from entrance to outlet.

Further, the back segment steel component further includes internal layer water-cooling jacket and outer layer water-cooling jacket, the internal layer Water-cooling jacket is sheathed on the outer wall of the coal dust casing, and the outer layer water-cooling jacket is sheathed on the outer wall of the gasifying agent casing.

Further, one end in the casing air close to the steady flame section is provided with oblique tooth-shaped wind distributing hole plate； The oblique tooth-shaped wind distributing hole plate is cylindrical type, its outside diameter is engaged with the internal diameter of the casing air；The oblique tooth-shaped wind distributing hole Centre bore, some straight-through air holes, side opening and some oblique ventilation holes, the centre bore are disposed with by its center to periphery on plate Internal diameter be engaged with the outside diameter of the gas sleeve, the internal diameter of the side opening is engaged with the outside diameter of the ignition power pole bar, Some oblique ventilation holes tilt in the same direction relative to the axis of the oblique tooth-shaped wind distributing hole plate.

Further, it is circumferentially arranged to have gasifying agent eddy flow part, the gasifying agent rotation in the back segment gasifying agent passage Stream part includes central shaft and is centered around the swirl vane composition of the central shaft surrounding, and the swirl vane is relative in described Mandrel tilts in the same direction.

Further, the internal layer water-cooling jacket includes the first internal layer water-cooling channel and the second internal layer water-cooling channel, described First internal layer water-cooling channel is connected with the second internal layer water-cooling channel in one end close to the leading portion bulk ceramics prefabricated component； The outer layer water-cooling jacket includes the first outer layer water-cooling channel and the second outer layer water-cooling channel, the first outer layer water-cooling channel and The second outer layer water-cooling channel is connected close to one end of the leading portion bulk ceramics prefabricated component.

Further, the end face of the leading portion gasifying agent channel outer wall is fixedly connected with the end face of the gasifying agent casing, The end face of the outer wall of the leading portion throwing powder passage and the close leading portion bulk ceramics prefabricated component of the internal layer water-cooling jacket One end end face corresponds to connection.

Further, the junction between the leading portion bulk ceramics prefabricated component and the back segment steel component is equipped with fire resisting Flexible filler.

Further, the leading portion is thrown and is set between the end face of outer wall and the end face of the internal layer water-cooling jacket of powder passage Have a refractory ceramic fibre felt, between the sealing construction section and the outer wall of the casing air, the outer layer water-cooling jacket it is interior Between the outer wall of wall and the leading portion gasifying agent passage, it is both provided with refractory ceramic fibre and turns round rope..

3rd, beneficial effect

Compared with the prior art, the beneficial effects of the utility model are：

(1) burner provided by the utility model, by the way of leading portion bulk ceramics prefabricated component wraps casing air Sealing performance is enhanced, the inner cavity connected with air duct is hourglass-shaped steady flame section, on the one hand promotes combustion gas and air exists The front end of ignition power pole bar collects around mixing, thus igniting is easier to, and on the other hand, also ensures that coal dust and gasification during throwing coal Agent will not interfere the flame preliminarily formed, avoid cutoff；

(2) burner provided by the utility model, leading portion bulk ceramics prefabricated component have excellent wear-resistant and high temperature resistant Performance, effectively solves and easily occurs in the flow field of the high swirl strength of high temperature of the existing combustor nozzle in gas generator The problem of erosive wear and fatigue at high temperature crack；Protected in addition, inner cavity forms parcel for hourglass-shaped steady flame section to ignitor bar Shield, helps to reduce the influence of hyperthermia radiation and erosive wear；

(3) burner provided by the utility model, leading portion throw powder passage with the export direction to leading portion gasifying agent passage The design of inclined flaring structure is expanded in side, and the coal dust that powder passage is thrown by leading portion forms taper flow field to external diffusion, and with Formed by the gasifying agent of leading portion gasifying agent passage and intersect confluence, this improves the mixing of coal dust and gasifying agent to a certain extent Atomizing effect；

(4) burner provided by the utility model, internal diameter and the air set of the outlet ends of the hourglass-shaped inner cavity of steady flame section The equal structure of the internal diameter of pipe, ensure that the flame ejected has higher rigidity, thus be not easy by coal dust and gasifying agent etc. Blow out；

(5) burner provided by the utility model, leading portion gasifying agent passage first shrink the knot expanded afterwards from entrance to outlet Structure, adds gasifying agent jet velocity, contributes to the mixed aerosol of gasifying agent and coal dust；

(6) water cooling that burner provided by the utility model, the outer wall of coal dust casing and the outer wall of gasifying agent casing are set Chuck, enhances cooling effect, avoids casing from fatigue at high temperature cracking occur；

(7) burner provided by the utility model, oblique tooth-shaped wind distributing hole plate ensure that combustion air is evenly distributed, and be formed Swirling Flow, enhancing combustion air and combustion gas mixing effect, and then improve burner ignition success rate and flame rigidity；

(8) burner provided by the utility model, gasifying agent eddy flow part to form cylindricality rotation in leading portion gasifying agent passage Flow field is flowed, improves the mixed aerosol effect of gasifying agent and coal dust；

(9) on the one hand burner provided by the utility model, fire resisting flexible filler seal each passage as seal Isolation, avoids each interchannel medium from mutually altering and causes the hidden danger such as combustion inner pipe, on the other hand as flexible compensation element, compensates leading portion The differential expansion that bulk ceramics prefabricated component is produced with back segment steel inter-module.

Brief description of the drawings

Fig. 1 is the diagrammatic cross-section of the utility model；

Fig. 2 is the structure diagram of oblique tooth-shaped wind distributing hole plate；

Fig. 3 is the structure diagram of gasifying agent eddy flow part.

In figure：1st, gas sleeve；2nd, ignition power pole bar；3rd, casing air；4th, internal layer water-cooling jacket；5th, gasifying agent eddy flow Part；6th, outer layer water-cooling jacket；7th, refractory ceramic fibre felt；8th, refractory ceramic fibre turns round rope；9th, leading portion ceramic preform；10th, tiltedly Tooth form wind distributing hole plate；11st, leading portion burning gallery；12nd, leading portion throws powder passage；13rd, leading portion gasifying agent passage；14th, coal dust casing； 15th, gasifying agent casing；16th, construction section is sealed；17th, steady flame section.

Embodiment

The utility model is further described below with specific embodiment below in conjunction with the accompanying drawings.

Embodiment 1

As shown in Figure 1, a kind of burner, including back segment steel component and leading portion bulk ceramics prefabricated component 9, before described Section bulk ceramics prefabricated component 9 is fixed at the front end of the back segment steel component；

The back segment steel component includes：

Gas sleeve 1, the gas sleeve 1 is interior to have blast tube；

Casing air 3, the casing air 3 are sheathed on the outside of the gas sleeve 1, the inner wall of the casing air 3 Air duct is limited between the outer wall of the gas sleeve 1；

Coal dust casing 14, the coal dust casing 14 are sheathed on the outside of the casing air 3, the coal dust casing 14 it is interior Back segment is limited between the outer wall of wall and the casing air 3 and throws powder passage；

Gasifying agent casing 15, the gasifying agent casing 15 are sheathed on the outside of the coal dust casing 14, the gasifying agent set Back segment gasifying agent passage is limited between the outer wall of the inner wall of pipe 15 and the coal dust casing 14；

Ignition power pole bar 2 is additionally provided between the inner wall of the casing air 3 and the outer wall of the gas sleeve 1, it is described The front end of ignition power pole bar 2 is flushed with the port of export of the gas sleeve 1；

The leading portion bulk ceramics prefabricated component 9 is a structure for including the conical surface, it further includes same ring triple channel, described Intersect with the conical surface outlet with ring triple channel；

The same ring triple channel is respectively the leading portion burning gallery 11, outer positioned at 9 center of leading portion bulk ceramics prefabricated component The leading portion gasifying agent passage 13 of side, and leading portion between leading portion burning gallery 11 and leading portion gasifying agent passage 13 are thrown powder and are led to Road 12, the leading portion are thrown powder passage 12 and are connected with back segment throwing powder passage, the leading portion gasifying agent passage 13 and the back segment Gasifying agent passage connects；

The leading portion burning gallery 11 includes sealing construction section 16 and steady flame section 17, the internal diameter of the sealing construction section 16 with The outside diameter of the casing air 3, which is engaged, to be fixedly connected, and the steady flame section 17 is hourglass shape, and is connected with the air duct It is logical；

The outlet of the leading portion gasifying agent passage 13 and the outlet of the steady flame section 17 are pre- with the leading portion bulk ceramics The centerline axis parallel of product 9；

The export direction that the leading portion throws powder passage 12 is expanded towards the export direction side of the leading portion gasifying agent passage 13 Tilt.

Burner in the present embodiment is set using the two-part structure of leading portion bulk ceramics prefabricated component 9 and back segment steel component Meter, leading portion bulk ceramics prefabricated component 9 have excellent wear-resistant and resistance to elevated temperatures, effectively solve existing burner and burn The problem of erosive wear and fatigue at high temperature cracking easily occur in the flow field of the high swirl strength of high temperature of the mouth in gas generator, has Effect extends the service life of burner, reduces burner use cost.During burner operation, combustion air is first passed through, restarts igniting 2 points of electrode stem, which is fought, is passed through combustion gas, forms the flame of primary combustion, hourglass-shaped inner-cavity structure in leading portion burning gallery 11 at this time Steady flame section 17 have two effects in the process：When being passed through combustion gas and combustion air, since the steady inside of flame section 17 is empty Between contraction, combustion gas and combustion air and are not easy in the aggregation in space being exported between steady flame section 17 mixing of gas sleeve 1 Continue to external diffusion, thus easily light, ignition success rate is high；Second, the contraction of steady 17 inner space of flame section, to a certain degree On reduce the influence for throwing the flame that coal dust and gasifying agent during coal form ignition process and primary combustion, effectively keep away Cutoff is exempted from.And the mode that casing air 3 is wrapped connection by construction section 16 is sealed, leakproofness is enhanced, avoids coal dust etc. Other cut-offs are penetrated into leading portion burning gallery 11, cause security risk.

In addition, leading portion throwing powder passage 12, which has to the export direction side of leading portion gasifying agent passage 13, expands inclined flaring Structure design, the taper flow field to external diffusion is formed by the coal dust of leading portion throwing powder passage 12, and with being led to by leading portion gasifying agent The gasifying agent in road 13, which is formed, intersects confluence, this improves the mixed aerosol effect of coal dust and gasifying agent to a certain extent, promotes Coal dust gasification efficiency.On the other hand, this structure causes the injection direction of coal dust to get around flame, avoids forming flame directly Impact cause cutoff, thus the burner flame stability in the present embodiment is good.

Embodiment 2

As shown in Figure 1, a kind of burner, its structure compared with Example 1, except that：The steady flame section 17 it is interior Surface rounding off, and the internal diameter of its outlet ends is equal with the internal diameter of the casing air 3, ensure that the flame tool ejected There is higher rigidity, be not easy to be blown out by coal dust and gasifying agent etc..

Embodiment 3

As shown in Figure 1, a kind of burner, its structure compared with Example 1, except that：The leading portion gasifying agent leads to Road 13 is first shrinks the structure expanded afterwards from entrance to outlet, adds gasifying agent jet velocity, promotion gasifying agent and coal dust Mixed aerosol.

Embodiment 4

As shown in Figure 1, a kind of burner, its structure compared with Example 1, except that：The back segment steel group Part further includes internal layer water-cooling jacket 4 and outer layer water-cooling jacket 6, and the internal layer water-cooling jacket 4 is sheathed on the coal dust casing 14 Outer wall, the outer layer water-cooling jacket 6 are sheathed on the outer wall of the gasifying agent casing 15.

Internal layer water-cooling jacket 4 is set respectively in the outer wall of coal dust casing 14 and the outer wall of gasifying agent casing 15 in the present embodiment With outer layer water-cooling jacket 6, the entrance and exit of cooling water is arranged on the both sides with casing air 3 for symmetry axis, and is respectively positioned on remote From one end of leading portion bulk ceramics prefabricated component 9, this structure enhances the cooling effect to back segment steel component, relaxes high temperature spoke The Under Thermal Fatigue Damage to back segment steel component is penetrated, achievees the purpose that protection.

Embodiment 5

As depicted in figs. 1 and 2, a kind of burner, its structure compared with Example 1, except that：The air set One end in pipe 3 close to the steady flame section 17 is provided with oblique tooth-shaped wind distributing hole plate 10；The oblique tooth-shaped wind distributing hole plate 10 is circle Column type, its outside diameter are engaged with the internal diameter of the casing air 3；On the oblique tooth-shaped wind distributing hole plate 10 by its center to periphery according to It is secondary to be provided with centre bore, some straight-through air holes, side opening and some oblique ventilation holes, the internal diameter of the centre bore and the gas sleeve 1 outside diameter is engaged, and the internal diameter of the side opening is engaged with the outside diameter of the ignition power pole bar 2, some oblique ventilation holes Tilted in the same direction relative to the axis of the oblique tooth-shaped wind distributing hole plate 10.

Oblique tooth-shaped wind distributing hole plate 10 has the function of eddy flow and cloth wind, ensures that combustion air is evenly distributed, and forms eddy flow stream , so as to promote combustion air and the combustion gas aggregated mixed in the passage being exported between steady flame section 17 of gas sleeve 1, this Burner ignition success rate and the rigidity of burner flame are helped to improve to a certain extent, and then ensure that the steady of combustion flame It is qualitative.

Embodiment 6

As shown in figures 1 and 3, a kind of burner, its structure compared with Example 4, except that：The back segment gas Circumferentially arranged to have gasifying agent eddy flow part 5 in agent passage, the gasifying agent eddy flow part 5 includes central shaft and is centered around described The swirl vane composition of central shaft surrounding, the swirl vane tilt in the same direction relative to the central shaft, gasifying agent Eddy flow part 5 is so that form the mixed aerosol effect of cylindricality Swirling Flow, raising gasifying agent and coal dust in leading portion gasifying agent passage 13.

Embodiment 7

As shown in Figure 1, a kind of burner, its structure compared with Example 4, except that：The internal layer water-cooling jacket 4 Including the first internal layer water-cooling channel and the second internal layer water-cooling channel, the first internal layer water-cooling channel and the second internal layer water cooling Passage is connected close to one end of the leading portion bulk ceramics prefabricated component 9；The outer layer water-cooling jacket 6 includes the first outer layer water cooling Passage and the second outer layer water-cooling channel, the first outer layer water-cooling channel and the second outer layer water-cooling channel are before described One end connection of section bulk ceramics prefabricated component 9.

The internal layer water-cooling jacket 4 and outer layer water-cooling jacket 6 set in the present embodiment is respectively provided with double-layer structure, internal layer water cooling folder The entrance and exit of cooling water is separately positioned on the first internal layer water-cooling channel and the second internal layer water-cooling channel away from leading portion in set 4 One end of bulk ceramics prefabricated component 9, the entrance and exit of cooling water is separately positioned on the first outer layer water cooling in outer layer water-cooling jacket 6 One end away from leading portion bulk ceramics prefabricated component 9 on passage and the second outer layer water-cooling channel, cooling water surround back segment steel component Formation circulates, and absorbs most of heat that back segment steel component is passed in the burner course of work, improves back segment steel The service life of component.

Embodiment 8

As shown in Figure 1, Figure 2, Figure 3 shows, a kind of burner, its structure compared with Example 7, except that：The leading portion The end face of the outer wall of gasifying agent passage 13 and one end of the close leading portion bulk ceramics prefabricated component 9 of the gasifying agent casing 15 End face corresponds to and is fixedly connected, and the end face that the leading portion throws the outer wall of powder passage 12 is corresponding with the end face of the internal layer water-cooling jacket 4 It is fixedly connected.During concrete application, to increase the connection between the leading portion bulk ceramics prefabricated component 9 and the back segment steel component Locate leakproofness, in the junction between the leading portion bulk ceramics prefabricated component 9 and the back segment steel component fire resisting can be set soft Property filler, for example, in the present embodiment, the leading portion throws the end face of the outer wall of powder passage 12 and the internal layer water-cooling jacket 4 Refractory ceramic fibre felt 7 is provided between end face, between the outer wall of the sealing construction section and the casing air 3, described outer Between the layer inner wall of water-cooling jacket 6 and the outer wall of the leading portion gasifying agent passage 13, it is both provided with refractory ceramic fibre and turns round rope 8.

On the one hand fire resisting flexible filler in the present embodiment seals as seal, avoid each interchannel medium mutual Alter and cause the hidden danger such as combustion inner pipe, also ensure that the security during firing up and throwing powder, on the other hand mended as flexible Element is repaid, plays the role of compensating the differential expansion that leading portion bulk ceramics prefabricated component 9 is produced with back segment steel inter-module.

Leading portion bulk ceramics prefabricated component 9 is assembled with back segment steel component by shoulder in the present embodiment, and leaves assembly building Gap, burner back segment steel component pass through flanged joint, it is possible to achieve lossless dismounting, step by step half ceramics combustion of the half steel of Automatic manual transmission Burner, for common steel welding burner, greatly reduces weld seam quantity, so that it is reliable to improve burner structure Property, while replaced with vulnerable part and greatly reduce difficulty, save cost；

Above content is that the utility model is described in further detail with reference to embodiment, it is impossible to assert this practicality New specific implementation is confined to these explanations, for the utility model person of an ordinary skill in the technical field, On the premise of the design for not departing from the utility model, some simple deduction or replace can also be made, should be all considered as belonging to The protection domain that claims that the utility model is submitted determine.

Claims (10)

1. a kind of burner, including back segment steel component, the back segment steel component includes：

Gas sleeve (1), the gas sleeve (1) is interior to have blast tube；

Casing air (3), the casing air (3) are sheathed on the outside of the gas sleeve (1), the casing air (3) Air duct is limited between the outer wall of inner wall and the gas sleeve (1)；

Coal dust casing (14), the coal dust casing (14) are sheathed on the outside of the casing air (3), the coal dust casing (14) Inner wall and the casing air (3) outer wall between limit back segment throw powder passage；

Gasifying agent casing (15), the gasifying agent casing (15) are sheathed on the outside of the coal dust casing (14), the gasifying agent Back segment gasifying agent passage is limited between the outer wall of the inner wall of casing (15) and the coal dust casing (14)；

Ignition power pole bar (2), institute are additionally provided between the inner wall of the casing air (3) and the outer wall of the gas sleeve (1) The front end for stating ignition power pole bar (2) is flushed with the port of export of the gas sleeve (1)；

It is characterized in that：Including leading portion bulk ceramics prefabricated component (9), the leading portion bulk ceramics prefabricated component (9) fixed setting In the front end of the back segment steel component；

The leading portion bulk ceramics prefabricated component (9) is a structure for including the conical surface, it further includes same ring triple channel, and described is same Intersect with the conical surface outlet of ring triple channel；

The same ring triple channel is respectively the leading portion burning gallery (11), outer positioned at leading portion bulk ceramics prefabricated component (9) center The leading portion gasifying agent passage (13) of side, and the leading portion between leading portion burning gallery (11) and leading portion gasifying agent passage (13) Powder passage (12) is thrown, the leading portion burning gallery (11) includes sealing construction section (16) and steady flame section (17), the sealing installation The internal diameter of section (16) is engaged with the outside diameter of the casing air (3) to be fixedly connected, and the inner cavity of the steady flame section (17) is sand Shape is leaked, and is connected with the air duct, the leading portion is thrown powder passage (12) and connected with back segment throwing powder passage, the leading portion Gasifying agent passage (13) is connected with the back segment gasifying agent passage；

The exporting of the leading portion gasifying agent passage (13), the outlet of the steady flame section (17) are prefabricated with the leading portion bulk ceramics The centerline axis parallel of part (9)；

The export direction that the leading portion throws powder passage (12) is expanded towards the export direction side of the leading portion gasifying agent passage (13) Tilt.

2. burner according to claim 1, it is characterised in that：The internal diameter of the outlet ends of the steady flame section (17) and institute The internal diameter for stating casing air (3) is equal.

3. burner according to claim 1, it is characterised in that：The leading portion gasifying agent passage (13) is from entrance to going out Mouth first shrinks the structure expanded afterwards.

4. burner according to claim 1, it is characterised in that：The back segment steel component further includes internal layer water cooling folder (4) and outer layer water-cooling jacket (6) are covered, the internal layer water-cooling jacket (4) is sheathed on the outer wall of the coal dust casing (14), described outer Layer water-cooling jacket (6) is sheathed on the outer wall of the gasifying agent casing (15).

5. burner according to claim 1, it is characterised in that：Close to the steady flame in the casing air (3) One end of section (17) is provided with oblique tooth-shaped wind distributing hole plate (10), and the oblique tooth-shaped wind distributing hole plate (10) be cylindrical type, its outside diameter and The internal diameter of the casing air (3) is engaged；It is disposed with the oblique tooth-shaped wind distributing hole plate (10) by its center to periphery Centre bore, some straight-through air holes, side opening and some oblique ventilation holes, the internal diameter of the centre bore are outer with the gas sleeve (1) Footpath is engaged, and the internal diameter of the side opening is engaged with the outside diameter of the ignition power pole bar (2), and some oblique ventilation holes are opposite Tilted in the same direction in the axis of the oblique tooth-shaped wind distributing hole plate (10).

6. the burner according to claim 1 or 4, it is characterised in that：In the back segment gasifying agent passage, circumferentially set Gasifying agent eddy flow part (5) is equipped with, the gasifying agent eddy flow part (5) includes central shaft and is centered around the eddy flow of the central shaft surrounding Blade forms, and the swirl vane tilts in the same direction relative to the central shaft.

7. burner according to claim 4, it is characterised in that：The internal layer water-cooling jacket (4) includes the first internal layer water Cold passage and the second internal layer water-cooling channel, the first internal layer water-cooling channel and the second internal layer water-cooling channel are close to described One end connection of leading portion bulk ceramics prefabricated component (9)；The outer layer water-cooling jacket (6) includes the first outer layer water-cooling channel and second Outer layer water-cooling channel, the first outer layer water-cooling channel and the second outer layer water-cooling channel are close to the leading portion bulk ceramics One end connection of prefabricated component (9).

8. burner according to claim 7, it is characterised in that：The end face of leading portion gasifying agent passage (13) outer wall with The end face of the gasifying agent casing (15) is fixedly connected, and the leading portion throws the end face of the outer wall of powder passage (12) and the internal layer water One end end face of the close leading portion bulk ceramics prefabricated component (9) of cold chuck (4) corresponds to connection.

9. burner according to claim 8, it is characterised in that：The leading portion bulk ceramics prefabricated component (9) and it is described after Junction between section steel component is equipped with fire resisting flexible filler.

10. burner according to claim 9, it is characterised in that：The leading portion throws the end face of the outer wall of powder passage (12) Refractory ceramic fibre felt (7), the sealing construction section and the sky are provided between the end face of the internal layer water-cooling jacket (4) Between the outer wall of gas bushing (3), the outer wall of the inner wall of the outer layer water-cooling jacket (6) and the leading portion gasifying agent passage (13) it Between, it is both provided with refractory ceramic fibre and turns round rope (8).