CN106251565A - A kind of air preheater incipient fire warning system based on graphical analysis - Google Patents
A kind of air preheater incipient fire warning system based on graphical analysis Download PDFInfo
- Publication number
- CN106251565A CN106251565A CN201610795270.5A CN201610795270A CN106251565A CN 106251565 A CN106251565 A CN 106251565A CN 201610795270 A CN201610795270 A CN 201610795270A CN 106251565 A CN106251565 A CN 106251565A
- Authority
- CN
- China
- Prior art keywords
- air preheater
- fire
- shower
- graphical analysis
- system based
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007921 spray Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- 239000000446 fuel Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a kind of air preheater incipient fire warning system based on graphical analysis, including fire water shower, on-site control, fire water feed system, and for gathering the photographic head of the image information of air preheater inner rotor face, the outlet of fire water feed system is connected with the water inlet of fire water shower, fire water shower is provided with some shower nozzles, each shower nozzle just surface to air preheater internal rotor, the outfan of photographic head is connected with the input of on-site control, the outfan of on-site control is connected with the control end of each shower nozzle, this system is capable of warning and the preventing and treating of air preheater inner rotor face incipient fire, ensure air preheater safe and stable operation.
Description
Technical field
The present invention relates to a kind of air preheater incipient fire warning system, be specifically related to a kind of air preheater based on graphical analysis
Incipient fire warning system.
Background technology
Air preheater is the auxiliary equipment that station boiler is important, and Main Function is to reclaim to leave boiler soda pop endotherm section
Flue gas heat, heats combustion air, reduces exhaust gas temperature, improves boiler thermal output.Air preheater realizes the function group of gas-gas heat exchange
Part is rotor, and rotor is made up of multiple mode sector storehouses.Thousands of corrugated platings, i.e. carbon is comprised in each mode sector storehouse
Steel thin slice.These corrugated platings go to (flue-gas temperature 360 DEG C～370 DEG C) during air preheater flue gas storehouse and absorb heat, go to air bin
Heat is discharged, it is achieved that the heat exchange between flue gas and air time (First air, secondary wind temperature 20 DEG C～30 DEG C).
Station boiler is in initial start stage or low load stage, and the oil gun that can come into operation is combustion-supporting, occurs the feelings of oil coal multifuel combustion in burner hearth
Condition.Now in stove, burning condition is poor, and a large amount of coal dusts and oil droplet burn just be less easily entrained by entrance back-end ductwork completely,
And eventually arrive at air preheater.The thickly dotted corrugated plating of arranging in air preheater sector storehouse, the gap between plate is the least, because of
This bigger oil droplet, coal dust are difficult to, through fan-shaped storehouse, just in corrugated cardboard sheet top adhesion and aggregation, gradually form and have certain area
Fuel dirt.At the ignition of the boiler initial stage, containing substantial amounts of high temperature soot particle in flue gas, these soot particles are as kindling material, the most not
Disconnected strikes on fuel dirt, and will ignite dirt under certain condition, causes air preheater to catch fire.
Existing air preheater fire alarm installation, mostly relies on infrared temperature-test sensor to monitor temperature in flue gas storehouse, exceedes
Setting value is reported to the police.Owing to little fuel dirt burning occurring, very in flue-gas temperature higher (360 DEG C～370 DEG C), air preheater
Difficulty causes the intensification in vast space, flue gas storehouse, and infrared temperature-test sensor is difficult to find burning things which may cause a fire disaster, therefore cannot be to air preheater fire in early days
Calamity implements effective monitoring, and this makes unit air preheater face bigger security risk in initial start stage.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that a kind of air preheater based on graphical analysis
Incipient fire warning system, this system is capable of warning and the preventing and treating of air preheater inner rotor face incipient fire, it is ensured that empty pre-
Device safe and stable operation.
For reaching above-mentioned purpose, air preheater incipient fire warning system based on graphical analysis of the present invention includes disappearing
Anti-water sprayer tube, on-site control, fire water feed system and for gathering the image information of air preheater inner rotor face
Photographic head, the outlet of fire water feed system is connected with the water inlet of fire water shower, and fire water shower is provided with
Some shower nozzles, each shower nozzle just surface to air preheater internal rotor, the outfan of photographic head is connected with the input of on-site control
Connecing, the outfan of on-site control is connected with the control end of each shower nozzle.
It is connected by electrically operated valve between the outlet of fire water feed system with fire water shower, on-site control
It is connected with the control end of electrically operated valve.
Also including Power Plant DCS System, Power Plant DCS System is connected with on-site control.
Described photographic head is wide-angle camera.
It is connected by the communications cable between photographic head with on-site control.
On-site control is also associated with alarm.
The method have the advantages that
Air preheater incipient fire warning system based on graphical analysis of the present invention is when concrete operations, by shooting
Head gathers the image information of air preheater inner rotor face, and described image information is forwarded in on-site control, controls on the spot
By aberration identification, cabinet can judge whether rotor surface occurs Ignition Phenomena, when there is Ignition Phenomena in the surface of rotor,
On-site control controls shower nozzle and opens, and makes fire water be ejected into the surface of rotor through shower nozzle, puts out the fire of rotor surface, it is achieved empty
The warning of pre-device inner rotor face incipient fire and preventing and treating, it is ensured that air preheater safe and stable operation, simple in construction, easy to operate,
Practicality is extremely strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of the image information that photographic head 2 gathers under normal circumstances；
The schematic diagram of the image information that photographic head 2 gathers when Fig. 3 is rotor 1 surface generation Ignition Phenomena.
Wherein, 1 be rotor, 2 for photographic head, 3 for fire water shower, 4 for electrically operated valve, 5 for fire water feed system,
6 be Power Plant DCS System, 7 for on-site control.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail:
With reference to Fig. 1, air preheater incipient fire warning system based on graphical analysis of the present invention includes that fire water is sprayed
Shower pipe 3, on-site control 7, fire water feed system 5 and for gathering the taking the photograph of image information on air preheater internal rotor 1 surface
Picture 2, the outlet of fire water feed system 5 is connected with the water inlet of fire water shower 3, and fire water shower 3 sets
There are some shower nozzles, each shower nozzle just surface to air preheater internal rotor 1, the input of the outfan of photographic head 2 and on-site control 7
Being connected, the outfan of on-site control 7 is connected with the control end of each shower nozzle.
It is connected by electrically operated valve 4 between the outlet of fire water feed system 5 with fire water shower 3, controls on the spot
Cabinet 7 processed is connected with the control end of electrically operated valve 4；Present invention additionally comprises Power Plant DCS System 6, Power Plant DCS System 6 with control on the spot
Cabinet 7 processed is connected；Photographic head 2 is wide-angle camera；It is connected by the communications cable between photographic head 2 with on-site control 7；Just
Ground switch board 7 is also associated with alarm.
The specific works process of the present invention is:
Photographic head 2 is pressed predeterminated frequency and is gathered the image information on rotor 1 surface, flue gas storehouse in air preheater, and by air preheater
The image information on rotor 1 surface, flue gas storehouse is forwarded in on-site control 7, owing to flue gas storehouse has good sealing property,
Gauge without light source in flue gas storehouse, very dark in flue gas storehouse, when the surface of rotor 1 does not catch fire, the image collected such as Fig. 2 institute
Show.
When the surface of rotor 1 catches fire, the image that photographic head 2 gathers is as it is shown on figure 3, therefore on-site control 7 is to shooting
2 image informations gathered carry out aberration identification and can judge whether rotor 1 surface catches fire, when rotor 1 surface catches fire
Time, then calculate the area that rotor surface catches fire, when the area that rotor surface catches fire is more than or equal to preset value, on-site control 7
Control electrically operated valve 4 and shower nozzle to open, the fire water in fire water feed system 5 through electrically operated valve 4, fire water shower 3 and
Shower nozzle is ejected into the surface of rotor 1, puts out and catches fire in early days, and on-site control 7 produces alarm signal simultaneously, and by described alarm signal
Number it is forwarded in alarm and Power Plant DCS System 6, facilitates operations staff to grasp air preheater in time and run security situation；When rotor 1
When surface does not catch fire or fire has been extinguished, on-site control 7 closes electrically operated valve 4 and shower nozzle.In addition, it is necessary to explanation
, the present invention can also carry out accurate sprinkling fire according to the position of ignition point by controlling shower nozzle.
Claims (6)
1. an air preheater incipient fire warning system based on graphical analysis, it is characterised in that include fire water shower
(3), on-site control (7), fire water feed system (5) and be used for gathering the image information on air preheater internal rotor (1) surface
Photographic head (2), the outlet of fire water feed system (5) is connected with the water inlet of fire water shower (3), fire water spray
Shower pipe (3) is provided with some shower nozzles, each shower nozzle just surface to air preheater internal rotor (1), the outfan of photographic head (2) with on the spot
The input of switch board (7) is connected, and the outfan of on-site control (7) is connected with the control end of each shower nozzle.
Air preheater incipient fire warning system based on graphical analysis the most according to claim 1, it is characterised in that fire-fighting
It is connected by electrically operated valve (4) between the outlet of water supply system (5) with fire water shower (3), on-site control (7)
It is connected with the control end of electrically operated valve (4).
Air preheater incipient fire warning system based on graphical analysis the most according to claim 1, it is characterised in that also wrap
Including Power Plant DCS System (6), Power Plant DCS System (6) is connected with on-site control (7).
Air preheater incipient fire warning system based on graphical analysis the most according to claim 1, it is characterised in that described
Photographic head (2) is wide-angle camera.
Air preheater incipient fire warning system based on graphical analysis the most according to claim 1, it is characterised in that shooting
Head (2) is connected by the communications cable between on-site control (7).
Air preheater incipient fire warning system based on graphical analysis the most according to claim 1, it is characterised in that on the spot
Switch board (7) is also associated with alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795270.5A CN106251565A (en) | 2016-08-31 | 2016-08-31 | A kind of air preheater incipient fire warning system based on graphical analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795270.5A CN106251565A (en) | 2016-08-31 | 2016-08-31 | A kind of air preheater incipient fire warning system based on graphical analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106251565A true CN106251565A (en) | 2016-12-21 |
Family
ID=58080212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795270.5A Pending CN106251565A (en) | 2016-08-31 | 2016-08-31 | A kind of air preheater incipient fire warning system based on graphical analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106251565A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683324A (en) * | 2017-03-13 | 2017-05-17 | 贵州乌江水电开发有限责任公司沙沱发电厂 | Power plant image type fire and temperature surveillance detection system |
| CN109614908A (en) * | 2018-12-04 | 2019-04-12 | 西安理工大学 | A kind of flame combustion state detection system and detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5553623A (en) * | 1978-10-16 | 1980-04-19 | Babcock Hitachi Kk | Air preheater fire monitor device |
| JP2002295985A (en) * | 2001-03-29 | 2002-10-09 | Babcock Hitachi Kk | Fire extinguisher for regenerative air preheater |
| CN103423767A (en) * | 2013-08-14 | 2013-12-04 | 陕西钢铁集团有限公司 | Method and device for rapidly carrying out fire extinguishment on gas boiler |
| CN204831000U (en) * | 2015-08-18 | 2015-12-02 | 国家电网公司 | Rotation air preheater ultrasonic cleaning device |
| CN206021491U (en) * | 2016-08-31 | 2017-03-15 | 西安热工研究院有限公司 | A kind of air preheater incipient fire warning system based on graphical analysis |
-
2016
- 2016-08-31 CN CN201610795270.5A patent/CN106251565A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5553623A (en) * | 1978-10-16 | 1980-04-19 | Babcock Hitachi Kk | Air preheater fire monitor device |
| JP2002295985A (en) * | 2001-03-29 | 2002-10-09 | Babcock Hitachi Kk | Fire extinguisher for regenerative air preheater |
| CN103423767A (en) * | 2013-08-14 | 2013-12-04 | 陕西钢铁集团有限公司 | Method and device for rapidly carrying out fire extinguishment on gas boiler |
| CN204831000U (en) * | 2015-08-18 | 2015-12-02 | 国家电网公司 | Rotation air preheater ultrasonic cleaning device |
| CN206021491U (en) * | 2016-08-31 | 2017-03-15 | 西安热工研究院有限公司 | A kind of air preheater incipient fire warning system based on graphical analysis |
Non-Patent Citations (3)
| Title |
|---|
| 刘丁等: ""基于图像特征的电站锅炉空气预热器热点检测系统"", 《仪器仪表学报》 * |
| 刘涵等: ""空气预热器热点检测系统的研究"", 《动力工程》 * |
| 李琦等: ""基于红外热图的空气预热器热点检测系统"", 《燃烧科学与技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683324A (en) * | 2017-03-13 | 2017-05-17 | 贵州乌江水电开发有限责任公司沙沱发电厂 | Power plant image type fire and temperature surveillance detection system |
| CN109614908A (en) * | 2018-12-04 | 2019-04-12 | 西安理工大学 | A kind of flame combustion state detection system and detection method |
| CN109614908B (en) * | 2018-12-04 | 2022-02-18 | 西安理工大学 | Flame combustion state detection system and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |