CN111550780B - A gas film protection premixed burner - Google Patents
A gas film protection premixed burner Download PDFInfo
- Publication number
- CN111550780B CN111550780B CN202010516886.0A CN202010516886A CN111550780B CN 111550780 B CN111550780 B CN 111550780B CN 202010516886 A CN202010516886 A CN 202010516886A CN 111550780 B CN111550780 B CN 111550780B
- Authority
- CN
- China
- Prior art keywords
- shell
- ring groove
- mixed gas
- air
- igniter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011258 core-shell material Substances 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 206010016754 Flashback Diseases 0.000 abstract 4
- 239000007921 spray Substances 0.000 abstract 1
- 238000005496 tempering Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
本发明公开了一种气膜保护式预混燃烧器，包括壳体，壳体上设有从外到内排列的且开口均向右的外层环槽、混合气体环槽、内层环槽，壳体上还设有分别与外层环槽、混合气体环槽、内层环槽连通的第一空气进口、混合气体进口、第二空气进口，还包括点火器，点火器与壳体连接，点火器的头部设于内层环槽的内侧。混合气体环槽的口部喷出混合气体，外层环槽、内层环槽的口部分别形成外、内层空气膜；当混合气体速度小于火焰传播速度时，有回火风险，外、内层空气膜可将混合气体环槽的口部与窑炉内燃烧场隔开，防止回火；外、内层空气膜通过引射作用，增大混合气体的速度，防止回火发生；当混合气体的气流速度大于火焰传播速度时，无回火风险，外、内层空气膜有利于提高燃烧效率。
The present invention discloses an air film protection type premix burner, comprising a shell, an outer ring groove, a mixed gas ring groove, and an inner ring groove arranged from outside to inside and opening to the right are arranged on the shell, a first air inlet, a mixed gas inlet, and a second air inlet are respectively connected to the outer ring groove, the mixed gas ring groove, and the inner ring groove on the shell, and an igniter is also included, the igniter is connected to the shell, and the head of the igniter is arranged on the inner side of the inner ring groove. The mouth of the mixed gas ring groove sprays out the mixed gas, and the mouths of the outer ring groove and the inner ring groove form outer and inner air films respectively; when the speed of the mixed gas is less than the flame propagation speed, there is a risk of flashback, and the outer and inner air films can separate the mouth of the mixed gas ring groove from the combustion field in the kiln to prevent flashback; the outer and inner air films increase the speed of the mixed gas through the induced effect to prevent flashback; when the air flow speed of the mixed gas is greater than the flame propagation speed, there is no risk of flashback, and the outer and inner air films are conducive to improving the combustion efficiency.
Description
Technical Field
The invention relates to the field of premix burners, in particular to a gas film protection type premix burner.
Background
The premixing burner is used in a kiln, a mixed gas inlet is arranged on the premixing burner and is used for being connected with a premixing device, and the premixing device is used for premixing combustible gas and air. The premixed burner has the advantages of high combustion efficiency, low air residual coefficient, obvious combustion energy-saving effect and low pollutant discharge.
However, the premixed burner has the defect of easy tempering and burning out of the mixed gas nozzle, and has certain potential safety hazard. Accordingly, there is a need in the art for improvement.
Disclosure of Invention
The invention aims to provide a gas film protection type premix burner which is not easy to temper.
The invention solves the technical problems as follows:
The utility model provides a gas film protection formula mixes combustor in advance, includes the casing, be equipped with outer annular, mixed gas annular, the inlayer annular of arranging from outside to inside on the casing, outer annular, mixed gas annular, inlayer annular all open right setting, still be equipped with on the casing respectively with outer annular, mixed gas annular, the first air inlet, mixed gas inlet, the second air inlet of inlayer annular intercommunication, still include the some firearm, the some firearm with the casing is connected, the head of some firearm is located the inboard of inlayer annular.
As a further improvement of the technical scheme, the shell comprises an outer shell, an inner shell, a distribution cylinder and a core shell which are sleeved in sequence from outside to inside, wherein the outer ring groove, the mixed gas ring groove and the inner ring groove are respectively arranged between the outer shell and the inner shell, between the inner shell and the distribution cylinder and between the distribution cylinder and the core shell, and the igniter is connected with the core shell.
As a further improvement of the technical scheme, the right end of the inner ring groove is inclined outwards.
As a further improvement of the above technical solution, the left end of the core housing is provided with an opening, and the left end of the core housing is connected with the inner side wall of the inner layer housing.
As an alternative technical scheme, a first inclined plane is arranged on the inner side wall of the outer layer shell or the outer side wall of the inner layer shell.
As a further improvement of the technical scheme, the outer shell comprises a left shell and a right shell which are fixedly connected with each other, and the first inclined plane is arranged on the right shell.
As an alternative technical scheme, the core shell is internally provided with a hollow, the left part and the right part of the core shell are respectively provided with an air inlet through hole and an air outlet through hole, the air inlet through hole and the air outlet through holes are communicated with the hollow, the igniter part is arranged in the hollow, the air inlet through hole is communicated with the inner ring groove, and the air outlet through hole is arranged at the side of the head part of the igniter.
As a further improvement of the above technical solution, the igniter is disposed away from the axial center of the core housing.
As an alternative technical scheme, be equipped with the spacer that a plurality of intervals set up on the lateral wall of distribution cylinder, the outer end of spacer with the inside wall butt of inlayer casing.
As an alternative technical scheme, be equipped with the observation hole on the casing, the observation hole with the annular groove intercommunication of mixed gas, sealing connection has transparent window body on the observation hole.
The flame-retardant gas-fired furnace has the advantages that mixed gas is sprayed out of the opening parts of the mixed gas ring grooves, the outer air film and the inner air film are sprayed out of the opening parts of the outer ring groove and the inner ring groove respectively, when the air flow speed of the mixed gas is smaller than the flame propagation speed, the risk of tempering exists, the opening parts of the mixed gas ring grooves and a combustion field in the furnace can be separated by the outer air film and the inner air film to prevent the occurrence of tempering, the speed of the mixed gas can be increased through the injection effect, the speed of the mixed gas is enabled to be larger than the flame propagation speed, the occurrence of tempering is prevented, and when the air flow speed of the mixed gas is larger than the flame propagation speed, the risk of tempering does not exist.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a schematic diagram of the air film protected premix burner of the present invention after mating with a premix apparatus.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1 to 3, the embodiment of the present invention specifically:
The utility model provides a gas film protection formula premix combustor, includes the casing, be equipped with outer annular 112, mixed gas annular 22, the inlayer annular 32 of arranging from outside to inside on the casing, outer annular 112, mixed gas annular 22, inlayer annular 32 all open right setting, still be equipped with on the casing respectively with outer annular 112, mixed gas annular 22, the first air inlet 111, mixed gas inlet 21, the second air inlet 31 of inlayer annular 32 intercommunication, still include some firearm 5, some firearm 5 with the casing is connected, some firearm 5's head is located the inboard of inlayer annular 32.
The principle of the invention is that the mixed gas inlet 21 is used for communicating with a premixing device arranged outside, the premixing device is used for premixing the combustible gas and the air, and the mixed gas of the combustible gas and the air enters the mixed gas annular groove 22 from the mixed gas inlet 21 and is sprayed out from the opening part of the mixed gas annular groove 22 for combustion. The first air inlet 111 and the second air inlet 31 are used for communicating with an external air source, and the right sides of the outer ring groove 112 and the inner ring groove 32 respectively form an outer air film and an inner air film.
When the air source of the premixing device which is introduced into the peripheral equipment and the air source which is introduced into the first air inlet 111 and the second air inlet 31 are mutually independent air sources so as to independently control the air quantity of the outer air film and the inner air film and independently control the flow rate of the mixed gas.
When the air flow speed of the mixed gas is smaller than the flame propagation speed, the outer air film and the inner air film can separate the mouth part of the mixed gas ring groove 22 from the combustion field in the kiln to prevent backfire, and simultaneously, the outer air film and the inner air film can increase the speed of the mixed gas through injection, so that the mixed gas speed is larger than the flame propagation speed, and backfire is prevented.
When the air flow speed of the mixed gas is larger than the flame propagation speed, the mixed gas has no tempering risk, and can break through the outer air film and the inner air film.
Further as a preferred embodiment, the shell comprises an outer shell 1, an inner shell 2, a distribution cylinder 3 and a core shell 4 which are sleeved in sequence from outside to inside, the outer ring groove 112, the mixed gas ring groove 22 and the inner ring groove 32 are respectively arranged between the outer shell 1 and the inner shell 2, between the inner shell 2 and the distribution cylinder 3 and between the distribution cylinder 3 and the core shell 4, and the igniter 5 is connected with the core shell 4.
Further as a preferred embodiment, the right end of the inner ring groove 32 is inclined outwardly. The advantage of this technical scheme is, restrict the injection direction with inlayer air film to the slope outwards, and outer air film and inlayer air film intersect, surround the mixed gas, more fully exert the injection effect and separate the oral area of mixed gas annular 22 with the burning field in the kiln, prevent backfire.
Further as a preferred embodiment, the left end of the core housing 4 is provided with an opening, and the left end of the core housing 4 is connected to the inner side wall of the inner housing 2. Since the right end of the inner ring groove 32 is inclined outward, the right end of the core housing 4 is blocked by the right end of the dispensing cylinder 3, and the core housing 4 can be inserted into the dispensing cylinder 3 only from right to left, and the position of the core housing 4 can be fixed by the structure of connecting the left end of the core housing 4 with the inner side wall of the inner layer housing 2 in this embodiment.
As an alternative embodiment, a first slope 101 is provided on the inner sidewall of the outer housing 1 or on the outer sidewall of the inner housing 2. The first inclined plane 101 can reduce the air quantity of the outer air film, distribute the air required by combustion to the premixing devices participating in the peripheral equipment as much as possible, and the arrangement of the first inclined plane 101 can reduce the pipe resistance at the same time.
Further as a preferred embodiment, the outer shell 1 includes a left shell 11 and a right shell 12 that are fixedly connected to each other, and the first inclined plane 101 is disposed on the right shell 12. Since the first inclined surface 101 is provided on the inner side wall of the outer shell 1 or the outer side wall of the inner shell 2, the outer shell 1 is divided into the left shell 11 and the right shell 12, so that the first inclined surface 101 can be conveniently processed on the inner side wall of the right shell 12, and when the right shell 12 is cast, the right shell 12 can be demolded from one side of the first inclined surface 101. Alternatively, the inner shell 2 and the left housing 11 are integrally formed, and the number of manufacturing steps of parts can be reduced.
As an alternative embodiment, a hollow 43 is provided in the core housing 4, the left and right parts of the core housing 4 are respectively provided with an air inlet through hole 41 and an air outlet through hole 42, the air inlet through hole 41 and the air outlet through hole 42 are both communicated with the hollow 43, the igniter 5 is partially disposed in the hollow 43, the air inlet through hole 41 is communicated with the inner ring groove 32, and the air outlet through hole 42 is disposed beside the head of the igniter 5. Part of the air in the inner ring groove 32 enters the hollow 43 to cool the igniter 5, and the air in the hollow 43 flows out of the air outlet through hole 42 to prevent the mixed gas from flowing back into the hollow 43.
Further as a preferred embodiment, the igniter 5 is located away from the axial center of the core housing 4. The distance between the igniter 5 and the mixed gas can be reduced, and the mixed gas can be conveniently ignited.
As an alternative embodiment, a plurality of spacers 33 are arranged on the outer side wall of the dispensing cylinder 3 at intervals, and the outer ends of the spacers 33 are abutted against the inner side wall of the inner layer shell 2. The purpose of the spacer 33 is to reduce the area of the mixed gas outlet, speed up the flow rate of the mixed gas, and at the same time, the gap between the inner-layer casing 2 and the distribution cylinder 3 is not reduced, and the processing difficulty and the assembly difficulty of the inner-layer casing 2 and the distribution cylinder 3 are avoided.
As an alternative embodiment, an observation hole 23 is formed in the shell, the observation hole 23 is communicated with the mixed gas ring groove 22, and a transparent window is connected to the observation hole 23 in a sealing manner. The combustion condition in the mixed gas ring groove 22 can be observed through the observation hole 23.
While the preferred embodiment of the present invention has been described in detail, the invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and these modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516886.0A CN111550780B (en) | 2020-06-09 | 2020-06-09 | A gas film protection premixed burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010516886.0A CN111550780B (en) | 2020-06-09 | 2020-06-09 | A gas film protection premixed burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111550780A CN111550780A (en) | 2020-08-18 |
| CN111550780B true CN111550780B (en) | 2025-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010516886.0A Active CN111550780B (en) | 2020-06-09 | 2020-06-09 | A gas film protection premixed burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111550780B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212618272U (en) * | 2020-06-09 | 2021-02-26 | 广东摩德娜科技股份有限公司 | A gas-film protected premixed burner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05172310A (en) * | 1991-12-18 | 1993-07-09 | Ishikawajima Harima Heavy Ind Co Ltd | Fuel injection valve |
| JPH1162622A (en) * | 1997-08-22 | 1999-03-05 | Toshiba Corp | Integrated coal gasification combined cycle power plant and operation method |
| WO2009109452A1 (en) * | 2008-03-07 | 2009-09-11 | Alstom Technology Ltd | Burner arrangement, and use of such a burner arrangement |
| JP6405592B2 (en) * | 2014-05-01 | 2018-10-17 | タニコー株式会社 | Burning burner |
| CN110345475B (en) * | 2019-07-23 | 2020-05-19 | 华中科技大学 | Premixing type anti-backfire flameless combustor |
-
2020
- 2020-06-09 CN CN202010516886.0A patent/CN111550780B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212618272U (en) * | 2020-06-09 | 2021-02-26 | 广东摩德娜科技股份有限公司 | A gas-film protected premixed burner |
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| CN111550780A (en) | 2020-08-18 |
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