CN108613184B - Combustor capable of adjusting load and working method - Google Patents
Combustor capable of adjusting load and working method Download PDFInfo
- Publication number
- CN108613184B CN108613184B CN201810615125.3A CN201810615125A CN108613184B CN 108613184 B CN108613184 B CN 108613184B CN 201810615125 A CN201810615125 A CN 201810615125A CN 108613184 B CN108613184 B CN 108613184B
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- CN
- China
- Prior art keywords
- pipeline wall
- passageway
- air channel
- outer pipeline
- primary air
- 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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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
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
-
- 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
- F23D14/60—Devices for simultaneous control of gas and combustion air
Abstract
The invention relates to a burner with adjustable load, which comprises a central air channel, a primary air channel and a secondary air channel which are arranged from inside to outside, wherein the primary air channel is communicated with a coal dust channel for conveying fuel for combustion equipment, the central air channel and the secondary air channel are used for conveying air for the combustion equipment, the pipe wall of the central air channel is formed by connecting an axially movable outer pipe wall I and a fixed inner pipe wall I in a sleeved mode, the outer pipe wall of the secondary air channel is formed by connecting an axially movable outer pipe wall II and a fixed inner pipe wall II in a sleeved mode, the inner pipe wall of the secondary air channel and the outer pipe wall of the primary air channel are both fixed pipe walls, and the heads of the outer pipe wall II, the pipe wall I and the outer pipe wall I are in a shrinkage shape.
Description
Technical Field
The invention belongs to the technical field of flexibility peak shaving of thermal power plants, and particularly relates to a burner capable of adjusting load and a working method thereof.
Background
In recent years, the scale development of renewable energy installation in China is rapid, and after more and more unstable new energy is accessed into a power grid, a great challenge is provided for the safe and stable operation of the power grid. Serious "wind and light rejection" phenomena also occur in some areas.
National policy regulations mandate that renewable energy be on-line, which predicts that the role of thermal power in energy supply will shift from basic, regular energy to peak shaving, standby energy, i.e. thermal power plants will have the ability to flexibly peak shaving. The low-load combustion technology of the boiler is taken as the most direct means of flexibility peak shaving of the thermal power plant, wherein the low-load operation technology of the burner is the most critical technology.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a burner with adjustable load and a working method thereof, which have simple structures and can greatly adjust the load of the burner, and are particularly suitable for front and rear wall opposite-flow boiler burners and gas burners.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a combustor of adjustable load, including from inside to outside setting central wind passageway 1, primary air passageway 2 and overgrate air passageway 4, primary air passageway 2 and pulverized coal passageway 3 intercommunication, for combustion apparatus transport fuel, central wind passageway 1 and overgrate air passageway 4 are combustion apparatus transport air, a serial communication port, the pipe wall of central wind passageway 1 is by axial movable's outer pipeline wall one 10 and fixed inner pipeline wall one 11 phase cover connection constitution, the outer pipeline wall of overgrate air passageway 4 is by axial movable's outer pipeline wall two 8 and fixed inner pipeline wall two 6 phase cover connection constitution, the inner pipeline wall of overgrate air passageway 4 and the outer pipeline wall of primary air passageway 2 are fixed pipeline wall 9, the head of outer pipeline wall two 8, pipeline wall 9 and outer pipeline wall one 10 all is the throat form.
The outer pipeline wall II 8 performs axial displacement by controlling the actuating mechanism II 7, and the outer pipeline wall I10 performs axial displacement by controlling the actuating mechanism 5, so that the cross sectional areas of the primary air channel 2 and the secondary air channel 4 are changed, and the wind speeds of primary air and secondary air are adjusted.
Swirl plates 12 are arranged in the primary air channel 2 and the secondary air channel 4.
The invention relates to a working method of a burner with adjustable load, which is characterized by comprising the following steps:
when the burner needs to run under high load, the control executing mechanism 7 and the control executing mechanism 5 respectively control the axial movement of the outer pipeline wall II 8 towards the head direction and the axial displacement of the outer pipeline wall I10 towards the tail direction, so that the cross section areas of the primary air channel 2 and the secondary air channel 4 are increased, and the flow rates of primary air and secondary air are increased;
when the burner needs to run under low load, the control executing mechanism 7 and the control executing mechanism 5 respectively control the axial movement of the outer pipeline wall II 8 towards the tail direction and the axial displacement of the outer pipeline wall I10 towards the head direction, so that the cross-sectional areas of the primary air channel 2 and the secondary air channel 4 are increased, and the flow rates of primary air and secondary air are reduced.
Compared with the prior art, the burner device provided by the invention adopts the principle of axially movable sleeve pipe walls, and adjusts the cross section area of a flow channel of the burner, so that the burner can be stably combusted under lower load, the running load can be greatly adjusted, and the burner device is effectively suitable for the requirements of flexibility peak shaving of a thermal power plant under the renewable energy source internet surfing background.
Drawings
FIG. 1 is a schematic view of a load adjustable burner of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the load-adjustable burner of the present invention has three channels, namely, a central air channel 1, a primary air channel 2 and a secondary air channel 4. The primary air passage 2 is located in the middle of the central air passage 1 and the secondary air passage 4. The primary air channel 2 is communicated with the pulverized coal channel 3 to convey fuel for the combustion equipment, and the central air channel 1 and the secondary air channel 4 are communicated with air for the combustion equipment. The swirl plates 12 are arranged in the primary air channel 2 and the secondary air channel 4, so that the fuel and the air can be uniformly mixed, and the combustion is stable.
The pipe wall of the central air channel 1 of the pipe wall is formed by connecting an outer pipe wall I10 and a fixed inner pipe wall I11 in a sleeved mode, the outer pipe wall of the secondary air channel 4 is formed by connecting an outer pipe wall II 8 and an inner pipe wall II 6 in a sleeved mode, and the inner pipe wall of the secondary air channel 4 and the outer pipe wall of the primary air channel 2 are both fixed pipe walls 9. The second outer pipeline wall 8 is axially displaced by the second control actuator 7, the first outer pipeline wall 10 is axially displaced by the first control actuator 5, and the pipeline wall 9 is fixed.
Because the heads of the outer pipeline wall II 8, the pipeline wall 9 and the outer pipeline wall I10 are in the necking shape, the outer pipeline wall II 8 and the outer pipeline wall I10 axially displace relative to the pipeline wall 9, so that the cross sectional areas of the primary air channel 2 and the secondary air channel 4 can be changed.
The working process of the burner is that when the burner needs to operate under high load, the control executing mechanism 7 and the control executing mechanism 5 can respectively control the axial movement of the outer pipeline wall II 8 towards the head and the axial movement of the outer pipeline wall I10 towards the tail, so that the cross section areas of the primary air channel 2 and the secondary air channel 4 are increased; thereby increasing the flow rates of the primary air and the secondary air; when the burner needs to run under low load, the control executing mechanism 7 and the control executing mechanism 5 can respectively control the axial movement of the outer pipeline wall II 8 towards the tail part and the axial movement of the outer pipeline wall I10 towards the head part, so that the cross section areas of the primary air channel 2 and the secondary air channel 4 are reduced; thereby reducing the flow of primary air and secondary air, and ensuring the stable combustion of the burner.
The burner can directly change according to the load change of the combustion equipment, has simple structure and convenient implementation, and meets the requirement of flexibility adjustment of a thermal power plant.
Claims (2)
1. The utility model provides a combustor with adjustable load, including from inside to outside central wind passageway (1), primary air passageway (2) and overgrate air passageway (4), primary air passageway (2) and pulverized coal passageway (3) intercommunication, for combustion apparatus transport fuel, central wind passageway (1) and overgrate air passageway (4) are combustion apparatus transport air, characterized in that, the pipe wall of central wind passageway (1) is by axial movable's outer pipeline wall (10) and fixed inner pipeline wall (11) phase-by-phase connection, the outer pipeline wall of overgrate air passageway (4) is by axial movable's outer pipeline wall (8) and fixed inner pipeline wall (6) phase-by-phase connection constitution, the inner pipe wall of overgrate air passageway (4) and the outer pipeline wall of primary air passageway (2) are fixed pipeline wall (9), outer pipeline wall (8), pipeline wall (9) and outer pipeline wall (10) head all are the shrinkage form, outer pipeline wall (8) are through control actuating mechanism second (7)) axial displacement, thereby the air velocity of wind passageway (2) are moved through control mechanism (10) and are made to change by axial displacement of overgrate air passageway (2) and overgrate air passageway (2), swirl plates (12) are arranged in the primary air channel (2) and the secondary air channel (4).
2. A method of operating a load adjustable burner as recited in claim 1, wherein:
when the burner needs to run under high load, the control executing mechanism (7) controls the outer pipeline wall II (8) to move towards the head direction; the control executing mechanism (5) controls the first outer pipeline wall (10) to move towards the tail direction, so that the cross section areas of the primary air channel (2) and the secondary air channel (4) are increased, and the flow of primary air and secondary air is increased;
when the burner needs to run under low load, the control executing mechanism (7) controls the outer pipeline wall II (8) to move towards the tail direction; the control executing mechanism (5) controls the first outer pipeline wall (10) to move towards the head direction, so that the cross-sectional areas of the primary air channel (2) and the secondary air channel (4) are reduced, and the flow of primary air and secondary air is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615125.3A CN108613184B (en) | 2018-06-14 | 2018-06-14 | Combustor capable of adjusting load and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615125.3A CN108613184B (en) | 2018-06-14 | 2018-06-14 | Combustor capable of adjusting load and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108613184A CN108613184A (en) | 2018-10-02 |
| CN108613184B true CN108613184B (en) | 2023-10-13 |
Family
ID=63665150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810615125.3A Active CN108613184B (en) | 2018-06-14 | 2018-06-14 | Combustor capable of adjusting load and working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108613184B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188121B (en) * | 2021-04-01 | 2022-11-04 | 东方电气集团东方锅炉股份有限公司 | Ultralow nitrogen combustor spout, combustor and boiler |
| CN113483324B (en) * | 2021-07-16 | 2022-12-20 | 中国科学院上海高等研究院 | Tail gas burner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105611A (en) * | 1980-12-24 | 1982-07-01 | Kawasaki Steel Corp | Gas burner having superior turn-down combustion property |
| JPS58182009A (en) * | 1982-04-19 | 1983-10-24 | Matsushita Electric Ind Co Ltd | Burner for liquid fuel |
| CN1206808A (en) * | 1997-07-24 | 1999-02-03 | 株式会社日立制作所 | Burner for pulverized coal |
| CN202647746U (en) * | 2012-05-21 | 2013-01-02 | 西安交通大学 | Real-time adjustable novel swirl burner |
| CN103017161A (en) * | 2012-12-19 | 2013-04-03 | 上海锅炉厂有限公司 | Swirl pulverized coal burner |
| CN203771410U (en) * | 2014-03-12 | 2014-08-13 | 扬州市华翔有色金属有限公司 | Burner with adjustable flame |
| CN206504326U (en) * | 2017-02-23 | 2017-09-19 | 河南汇金智能装备有限公司 | Air channel in combustor nozzle coal dust |
| CN208418729U (en) * | 2018-06-14 | 2019-01-22 | 华能国际电力股份有限公司 | A kind of burner of adjustable load |
-
2018
- 2018-06-14 CN CN201810615125.3A patent/CN108613184B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105611A (en) * | 1980-12-24 | 1982-07-01 | Kawasaki Steel Corp | Gas burner having superior turn-down combustion property |
| JPS58182009A (en) * | 1982-04-19 | 1983-10-24 | Matsushita Electric Ind Co Ltd | Burner for liquid fuel |
| CN1206808A (en) * | 1997-07-24 | 1999-02-03 | 株式会社日立制作所 | Burner for pulverized coal |
| CN202647746U (en) * | 2012-05-21 | 2013-01-02 | 西安交通大学 | Real-time adjustable novel swirl burner |
| CN103017161A (en) * | 2012-12-19 | 2013-04-03 | 上海锅炉厂有限公司 | Swirl pulverized coal burner |
| CN203771410U (en) * | 2014-03-12 | 2014-08-13 | 扬州市华翔有色金属有限公司 | Burner with adjustable flame |
| CN206504326U (en) * | 2017-02-23 | 2017-09-19 | 河南汇金智能装备有限公司 | Air channel in combustor nozzle coal dust |
| CN208418729U (en) * | 2018-06-14 | 2019-01-22 | 华能国际电力股份有限公司 | A kind of burner of adjustable load |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108613184A (en) | 2018-10-02 |
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