CN2312456Y - Instrument for taking pictures of flames from boiler in power station - Google Patents
Instrument for taking pictures of flames from boiler in power station Download PDFInfo
- Publication number
- CN2312456Y CN2312456Y CN 97247792 CN97247792U CN2312456Y CN 2312456 Y CN2312456 Y CN 2312456Y CN 97247792 CN97247792 CN 97247792 CN 97247792 U CN97247792 U CN 97247792U CN 2312456 Y CN2312456 Y CN 2312456Y
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- flame
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- video camera
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Abstract
The utility model relates to a detection device for detecting the flame of a coal burner of a boiler in a power station, which comprises a CCD video camera and a color comparison and temperature measuring device, and CCD video camera and the color comparison and temperature measuring device are both arranged in one case body; a lengthening lens tube is arranged on the front end of the CCD video camera, and the lens tube is composed of a lens, an optical stop and a connecting pipe for optical stops; a temperature measuring rod is connected with the front end of the color comparison temperature measuring device, the lengthening lens tube and the temperature measuring rod are both positioned in a protective tube connected with the front opening of the case body, a circle of inner wall at the tube opening section of the protective tube is an arc surface which is gradually diminished, and the rear parts of the protective tube and the case body are respectively provided with at least one through hole to be used for entering cooling air.
Description
The utility model relates to a kind of flame detecting device, particularly a kind of pick-up unit that is used to detect the power boiler breeze burner flame.
The research and development of novel power boiler burning flame monitoring warning system is the international research topic that domestic and international researchist studies exploration always, and its core component is exactly a flame detecting device.
At present, the flame detecting device that is used for the power boiler breeze burner both at home and abroad mainly contains two types:
1) infrared ray flame detector
This is to be representative with U.S. FORNEY company, and it utilizes the infrared ray brightness and the flicker frequency of coal powder ignition district (initial combustion district) flame to judge.The operating wavelength range of flame detector is 0.7-3.2 μ m, the high-order 55-7500HZ of dynamic frequency sensing range, be lower than 15-4000HZ, burner hearth perfect combustion ignition zone flame flicking frequency can not be higher than 2HZ, utilizes filter action just burner flame can be distinguished mutually with background flame.
2) visible light flame detector
With U.S. CE company and BAILEY company is representative, and it utilizes the visible light brightness and the flicker frequency of coal powder ignition district flame to judge, the operating wavelength range of flame detector is 0.3-1.1 μ m, and the frequency detecting scope is 100-1000HZ.The ultimate principle that flame detects is identical with the infrared ray flame detector, and its difference only is that one is to utilize infrared ray, and the one, utilize visible light.
Along with developing rapidly of China's power industry, the power station single-machine capacity constantly increases, and is the needs that infrared ray and visible light flame detector can not satisfy needs, the especially heavy duty boiler of development with the indirect mode flame detection.Because: the one, because detecting device measuring point angle is smaller, generally have only 10-15 °.When operation, because of the variation of fugitive constituent in the fuel and first and second wind speed, the ignition zone position often drifts about, and particularly China power plant coal source is unstable in recent years, and fuel composition changes greatly, and detector probe is difficult to aim at any time ignition zone.The 2nd, the following unit of 200MW, general only the needs detected full furnace flame, and 300MW and above unit thereof, because single burner capacity is very big, not only need to detect full furnace flame, also will detect single burner flame, detect owing to reasons such as having the background luminance noise is difficult to accomplish single nozzles.Whether the correct detection of burner flame, directly influences the reliable in action of a whole set of burner hearth safety guard.Like this, the needs of boiler combustion can not have been satisfied with the indirect mode flame detection.And above-mentioned flame detector can only detect the flare up fire of the one dimension single-point of station boiler, and accuracy and precision are all lower.And, can not in time reflect the real work situation that flame changes reliably because sampled point and quantity of information are single.In addition, what existing flame detecting device can only flame detection has or not, and because field angle is little, tends to occur error signal, causes misoperation, and functional reliability is low, can cause very big loss.
The purpose of this utility model is exactly in order to address the above problem, provide a kind of can direct comprehensive detection boiler-burner flare up fire and the high station boiler flame image intake device of accuracy, precision and functional reliability.
Technical solution of the present utility model:
A kind of station boiler flame image intake device; it includes ccd video camera and color comparison temperature measurement device; they are adorned in the box body altogether; it is characterized in that adding a lengthening mirror pipe at the front end of ccd video camera; this mirror pipe is by camera lens; Guang Lan and light hurdle connecting pipe are formed; front end at the color comparison temperature measurement device is connected with a thermometric bar; lengthening mirror pipe is positioned at the protection tube that links to each other with the box body prosopyle jointly with the thermometric bar; and the mouth of pipe section one circle inwall of this protection tube is for receiving little arcwall face gradually; the rear portion of protection tube and box body rear portion all have an air hole at least, are used to insert cooling air.
The mode that the utility model adopts high-tech image transmission optical fibre and Digital Image Processing to combine detects boiler combustion flame.It adopts image transmission optical fibre and ccd video camera directly to take the boiler flame image, and with captured image as calculated machine carry out Flame Image Process and obtain bulk informations such as flame temperature field and variation tendency, compare with traditional fire inspection technology, because the quantity of information that obtains has enlarged 10
5Doubly; according to the information that is obtained; not only can judge having or not of flame; can also understand stability, burning quality and the variation tendency thereof of flame; make this system when combustion conditions worsens, become passive flame failure protection, had warning function into initiatively forecast; also can adjust boiler combustion according to the flame image analysis result and be in optimum condition, make boiler keep high burning efficiency and low NO
xDischarging, the exploitation of novel flame pick-up unit not only improves the reliability of flame detector system greatly, and for the boiler combustion adjustment provides foundation, can guarantee boiler unit safety and economic operation.Flame image intake device of the present utility model is contained near the boiler-burner, and it is made up of Liar, image Transmission Fibers and ccd video camera, and compares condition of severe according to environment for use, adds cooling and anti-dust protecting device.What the utility model detected is not a single-point, but the plane picture that the individual above pixel in about 60,000 (256 * 256) is formed, root, middle part, the anterior observation respectively of nozzles can be formed complete flame image, detecting two-dimensional imaging from single-point detects, technical had a qualitative leap, and the quantity of information of acquisition has improved 10
4-10
5The order of magnitude.
According to the optical radiation principle, there is the relation of determining between the brightness of the pulverized coal flame of emission continuous spectrum and the temperature, and the video camera output electric signal of taking flame is in time shutter ratio illumination on imaging surface fixedly the time, the illumination on the imaging surface again ratio in the brightness of flame being shot.Can determine the temperature of flame being shot from the output voltage of video camera through experimental study.Because video camera has certain visual field, can take in the stove zone more widely, what obtain is a flame plane image that is made of about 60000 above pixels, detect the two-dimensional imaging detection of native system from the single-point of tradition fire inspection, technical had a qualitative leap, and quantity of information has improved 10
4-10
5Doubly, improved the reliability of flame monitoring greatly, and the reliability foundation can be provided for the judgement of burning quality.
The two-dimensional image information that is obtained by video camera is sent into computing machine and is carried out Flame Image Process after analog to digital conversion becomes digital quantity, can obtain bulk informations such as flame location, temperature field and variation tendency thereof.These information show with the histogram of pseudo-colours flame image and major parameter intuitively on CRT, and for operations staff's monitoring flame combustion case, whole process speed is exceedingly fast, and the information that shows on CRT is real-time substantially.Adjust expert system if further dispose boiler combustion again on the native system basis, these information can be used for the closed-loop control of boiler combustion.
Flame camera of the present utility model and the configuration of boiler burner equivalent are promptly all carried out flame monitoring to every burner.Can monitor the combustion position of every burner according to every burner exit ignition point position, flame temperature field, maximum temperature point position and variation tendency thereof.When combustion conditions worsens, can carry out outfiring alarm according to variation tendency.Preceding 5 minutes operating condition data be can be used for crash analysis by Computer Storage.Can carry out the burning adjustment of single burner according to the information that computing machine shows, make every burner burning all be in optimum condition, reduce NO
xDischarging, guarantee the good combustion of whole boiler.
Fig. 1 is a structural representation of the present utility model.
As Fig. 1, the utility model includes CCD (charge-coupled image sensor) video camera 1 and color comparison temperature measurement device 2 (model that can select for use U.S. Lei Tai company to produce is the double-colored temperature measuring equipment of Thermalert 2c), they are contained in the box body 3 altogether, the front end of ccd video camera 1 adds a lengthening mirror pipe 4, this mirror pipe 4 is made up of camera lens 5, light hurdle 6 and light hurdle connecting pipe 7, camera lens 5 is positioned at the front end of lengthening mirror pipe 4, it is connected with a plurality of smooth hurdles 6 by more piece light hurdle connecting pipe 7, constitute monoblock type lengthening mirror pipe, the length of lengthening mirror pipe 4 is the 50-150 centimetre, is preferably 70 centimeters.Front end at color comparison temperature measurement device 2 is connected with a thermometric bar 8, and thermometric bar 8 is preferably long together with lengthening mirror pipe 4, and close mutually as far as possible, leaves a determining deviation between them, about 1 centimeter.Lengthening mirror pipe 4 is positioned at the protection tube 9 that links to each other with box body 3 prosopyles jointly with thermometric bar 8, and the mouth of pipe section one circle inwall of this protection tube 9 is for to receive little arcwall face 10 gradually, makes the tapered mouth of the mouth of pipe of protection tube 9.The rear portion of the rear portion of protection tube 9 and box body 3 has air hole 11,12, and they are used to insert cooling air.Wherein, the rear portion air hole 11 of protection tube 9 can connect the connector of air compressor machine or other on-the-spot instrument usefulness air by pipeline 13, and pipeline 13 is provided with moisture trap 14 and pressure regulator valve 15.The air hole 12 of box body 3 rear ends also links to each other with the air connector with air compressor machine or other on-the-spot instrument by pipeline 16, also is provided with pressure regulator valve 17 on the pipeline 16.
When the utility model uses; the mouth of pipe of protection tube 9 is stretched near the furnace of power-plant boilers inner burner that will detect the furnace wall; when boiler-burner burns; its flame image signal is absorbed by camera lens 5; reach ccd video camera 1 by lengthening mirror pipe 4; become video signal and send, for the monitor and alarm system acquisition process from delivery outlet 18.
Because camera lens 5 of the present utility model is operated in the rugged surroundings of the many dirt of high temperature, if untimely protection, the performance of can losing the job very soon.For the working temperature that prevents camera lens 5 too high, and with the thermometric bar 8 of color comparison temperature measurement device 2 near camera lenses 5, so it can be caught near the temperature the camera lens 5 in real time,,, send alerting signal if having unusually by color comparison temperature measurement device 2 output temperature signals.During the utility model operate as normal; cooling air is delivered in the protection tube 9 by pipeline 13, and its air pressure size is regulated according to scene temperature, and moisture trap 14 is used for the moisture content in the cold gas is discharged; prevent that moisture content from attaching on the camera lens 5 with cold gas, influence camera lens 5 work.After cold gas enters protection tube 9; lengthening mirror pipe 4 and thermometric bar 8 are cooled off; prevent that they are by the burner hearth high-temperature damage; because protection tube 9 mouths of pipe are the awl mouth; mouth of pipe inwall is the arcwall face of thickening gradually 10, and the cold gas that then has certain pressure and speed will form the eddy current gas curtain under the effect of mouth of pipe arcwall face 10, and its is on the one hand to cooling around the camera lens 5; high temperature dust in the time of on the other hand again can be with burner combustion stops, and prevents to attach on the camera lens 5.Cold gas is delivered in the box body 3 by pipeline 16 simultaneously ccd video camera 1 and color comparison temperature measurement device 2 is cooled, and protects their energy operate as normal.When the delivery outlet 19 of color comparison temperature measurement device 2 sends alerting signal, illustrate that the pressure of cold gas is not enough, then need regulate pressure regulator valve 15 and pressure regulator valve 17 gets final product.
Claims (5)
1. station boiler flame image intake device; it includes ccd video camera and color comparison temperature measurement device; they are adorned in the box body altogether; it is characterized in that adding a lengthening mirror pipe at the front end of ccd video camera; this mirror pipe is by camera lens; Guang Lan and light hurdle connecting pipe are formed; front end at the color comparison temperature measurement device is connected with a thermometric bar; lengthening mirror pipe is positioned at the protection tube that links to each other with the box body prosopyle jointly with the thermometric bar; and the mouth of pipe section one circle inwall of this protection tube is for receiving little arcwall face gradually; the rear portion of protection tube and box body rear portion all have an air hole at least, are used to insert cooling air.
2. by the described station boiler flame image of claim 1 intake device, the front end that it is characterized in that described lengthening mirror pipe is a camera lens, and camera lens is connected with a plurality of smooth hurdles by more piece light hurdle connecting pipe, constitutes an integral body lengthening mirror pipe, this mirror length of tube is the 50-150 centimetre, is preferably 70 centimeters.
3. by the described station boiler flame image of claim 1 intake device, it is characterized in that described thermometric bar should with lengthening mirror Guan Tongchang, and close mutually, leave a determining deviation between them.
4. by the described station boiler flame image of claim 1 intake device, the air hole that it is characterized in that described protection tube afterbody connects air compressor machine or other the on-the-spot instrument connector with air by pipeline, and pipeline is provided with moisture trap and pressure regulator valve.
5. by the described station boiler flame image of claim 1 intake device, it is characterized in that the air hole of box body rear end also links to each other with the air connector with air compressor machine or other on-the-spot instrument by pipeline, also be provided with pressure regulator valve on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247792 CN2312456Y (en) | 1997-11-18 | 1997-11-18 | Instrument for taking pictures of flames from boiler in power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247792 CN2312456Y (en) | 1997-11-18 | 1997-11-18 | Instrument for taking pictures of flames from boiler in power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2312456Y true CN2312456Y (en) | 1999-03-31 |
Family
ID=33955182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97247792 Expired - Lifetime CN2312456Y (en) | 1997-11-18 | 1997-11-18 | Instrument for taking pictures of flames from boiler in power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2312456Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954841A (en) * | 2011-08-30 | 2013-03-06 | 南京梅山冶金发展有限公司 | Flame detection device for annular sleeve kiln |
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN105067121A (en) * | 2015-08-10 | 2015-11-18 | 航天海鹰(哈尔滨)钛业有限公司 | Infrared temperature measurement device for high-temperature alloy temperature measurement |
| CN105463511A (en) * | 2015-05-28 | 2016-04-06 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis cell electrolyte temperature online monitoring method and device |
| CN106369629A (en) * | 2016-10-18 | 2017-02-01 | 神华集团有限责任公司 | Hearth observation device |
| CN106885635A (en) * | 2017-04-01 | 2017-06-23 | 刘建松 | A kind of heatproof detection means that furnace flame temperature field is characterized based on image |
| CN108111809A (en) * | 2017-12-11 | 2018-06-01 | 鞍钢股份有限公司 | A kind of red burnt level monitoring device of coke dry quenching furnace and installation method |
-
1997
- 1997-11-18 CN CN 97247792 patent/CN2312456Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954841A (en) * | 2011-08-30 | 2013-03-06 | 南京梅山冶金发展有限公司 | Flame detection device for annular sleeve kiln |
| CN104197366A (en) * | 2014-09-15 | 2014-12-10 | 常州宝仪机电设备有限公司 | Multifunctional monitoring lens |
| CN105463511A (en) * | 2015-05-28 | 2016-04-06 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis cell electrolyte temperature online monitoring method and device |
| CN105463511B (en) * | 2015-05-28 | 2018-04-20 | 贵阳铝镁设计研究院有限公司 | Aluminum cell electrolyte on-line temperature monitoring method and its device |
| CN105067121A (en) * | 2015-08-10 | 2015-11-18 | 航天海鹰(哈尔滨)钛业有限公司 | Infrared temperature measurement device for high-temperature alloy temperature measurement |
| CN105067121B (en) * | 2015-08-10 | 2018-11-20 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of infrared thermometry device for high temperature alloy thermometric |
| CN106369629A (en) * | 2016-10-18 | 2017-02-01 | 神华集团有限责任公司 | Hearth observation device |
| CN106885635A (en) * | 2017-04-01 | 2017-06-23 | 刘建松 | A kind of heatproof detection means that furnace flame temperature field is characterized based on image |
| CN108111809A (en) * | 2017-12-11 | 2018-06-01 | 鞍钢股份有限公司 | A kind of red burnt level monitoring device of coke dry quenching furnace and installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: LU HOUPING TO: NANJING MAINLAND HUANENG ZHONGDIAN INDUSTRY DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 211100 No. 89, Pai Pai Road, Jiangning Development Zone, Nanjing Patentee after: Nanjing Huaneng Huaneng Electric Industry Development Co., Ltd. Address before: No. 89, Pai Pai Road, Jiangning Development Zone, Nanjing, Nanjing power company Patentee before: Lu Houping |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |