CN2733350Y - Power plant boiler flue duct type fly ash carbon content online measuring apparatus - Google Patents
Power plant boiler flue duct type fly ash carbon content online measuring apparatus Download PDFInfo
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- CN2733350Y CN2733350Y CN 200420080442 CN200420080442U CN2733350Y CN 2733350 Y CN2733350 Y CN 2733350Y CN 200420080442 CN200420080442 CN 200420080442 CN 200420080442 U CN200420080442 U CN 200420080442U CN 2733350 Y CN2733350 Y CN 2733350Y
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Abstract
The utility model relates to a power plant boiler flue duct type fly ash carbon content online measuring apparatus, a microwave emitter arranged on a side of the flue duct emits a microwave signal received by a microwave receiver arranged on the other side of the flue duct, and the output end of a signal acquisition unit for the whole flue duct connects with an input end of the microwave emitter. The output end of the microwave receiver connects with the input end of the signal acquisition unit for the whole flue duct, the output and input end of the signal acquisition unit for the whole flue duct connects with the input and output end of a microwave measurement electronic unit, and the input and the output end of the microwave measurement electronic unit connects with the input and the output end of a unit of a host computer. The utility model has the advantages that by the microwave transmission communication technique, the status signals of the cross section fly ash on the two sides of the flue duct are synchronously collected, and are processed under the microwave attenuation measurement of the on-site electronic unit; the measurement signal put into an amplify process is transmitted to a unit of a host computer of the control compartment, and is outputted, following the computer processing;the on-line measurement is realized. The problems of phase taking representation and the clogging of the dust path are avoided, the anti-interference ability is improved, and the operation is stable and maintenance free.
Description
Technical field
The utility model relates to a kind of station boiler chimney flue type unburned carbon in flue dust on-line measurement device.Belong to station boiler unburned carbon in flue dust technical field of measuring equipment.
Background technology
For a long time owing to be subjected to the restriction of technical conditions, unburned carbon in flue dust adopts operational factor such as boiler load, coal amount ature of coal, fineness of pulverized coal, flue gas oxygen amount and data to control indirectly always in boiler operatiopn.This control mode is subjected to influence of various factors, as operating experience, management expectancy, equipment state, ature of coal variation etc.Can't be in operation realize to unburned carbon in flue dust carry out intuitively, digitized control and adjustment.At present " chemical calcination loss method " generally adopted in the quantitative measurment of unburned carbon in flue dust, this is a kind of lab analysis method of off-line, though this method has the high characteristics of its precision, but because of being subjected to factor affecting such as ash sample collection, sample representativeness, hysteresis analysis time, the result who causes measuring can not reflect the operating mode of current boiler combustion timely and accurately, and the guidance that control of boiler combustion and burning are adjusted lacks real-time.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned existence, a kind of station boiler chimney flue type unburned carbon in flue dust on-line measurement device of novel structure is proposed, carbon content in the boiler fly ash is realized online detection, " finish valency online " ability and total utilization of PCA ability with control and optimization boiler combustion, reduction gross coal consumption rate, raising.Satisfy the needs that the power generation unit constantly develops to high capacity, high parameter.Technical solution of the present utility model: its structure is that the microwave emitter of launched microwave signal is installed in flue one side, the flue opposite side is installed the microwave receiver that receives microwave signal, the input end of the output termination microwave emitter of full flue signal 1 collecting unit, the input end of the full flue signal gathering unit of output termination of microwave receiver, the input of the output of full flue signal gathering unit/go into termination microwave measurement electronic unit/go out end, the input of the output of microwave measurement electronic unit/go into termination main computer unit/go out end.
Advantage of the present utility model: by the microwave transmission mechanics of communication, the cross section flying dust status signal of synchronous acquisition both sides flue, microwave attenuation through on-the-spot electronic unit is measured, and the measuring-signal processing and amplifying is sent to the central station of floating dock main computer unit, show, print, recollect carbon content by Computer Processing output again.Be embodied in: adopt international state-of-the-art ashless road section gauge technology, with the flue gas flow field that flows in the flue as tested object, allow microwave pass through whole flue field apace perpendicular to flue gas flow direction, and moment (＜20ms) finish measurement to " cross section ash sample ".Realized continuous on-line measurement truly; Fundamentally avoided problem that traditional microwave carbon determination product faces as getting problems such as representativeness, the obstruction of grey road, measuring period, coal variable effect mutually; 3 adopt the adjustable microwave source of high-quality, have improved the anti-interference of system greatly; The system design of optimizing is simple and direct reliable, stable non-maintaining.
Description of drawings
Accompanying drawing is the novel structural representation of this reality.
Among the figure 1 is microwave emitter, the 2nd, microwave receiver, the 3rd, full flue signal gathering unit, the 4th, the microwave measurement electronic unit, the 5th, main computer unit wherein divides industrial Computer IP C (industrial computer model IPC-610H), converter D/A card (model PCL-728), converter A/D card (model PCL-818L) three parts.
Embodiment
The contrast accompanying drawing, its structure is that flue one side is installed microwave emitter 1, opposite side is installed microwave receiver 2, the microwave signal of microwave emitter 1 emission is received by microwave receiver 2, the input end of the output termination microwave emitter 1 of full flue signal gathering unit 3, the input end of the full flue signal gathering unit 3 of output termination of microwave receiver 2, the input of the output of full flue signal gathering unit 3/go into termination microwave measurement electronic unit 4/go out end, the input of the output of microwave measurement electronic unit 4/go into termination main computer unit 5/go out end.
Establish microwave emitting antenna and the micro-wave coupler of finishing the conversion of microwave energy in the described microwave emitter 1; Establish microwave antenna and the micro-wave coupler of finishing the conversion of microwave energy in the microwave receiver 2; Establish in the full flue signal gathering unit 3 with signal through the swept signal source of the signal conditioner of amplitude modulation, amplification, buffer circuit conditioning and output frequency sweep microwave signal, isolate the isolator of microwave reverse signal and the attenuator that the output power of microwave signal source is decayed, the annexation between them is that the output terminal of signal conditioner is connected in series successively with swept signal source, isolator, attenuator.The microwave measurement electronic unit was finished wave detector and Signal Pretreatment unit two parts of microwave signal to electrical signal conversion in 4 minutes, wherein wave detector is to be used to finish the conversion of microwave signal to electric signal, and the Signal Pretreatment unit is that Signal Pretreatment is carried out in signal filtering, amplification, isolation.
The course of work
Industrial computer produces sweep voltage through its converter D/A card and carries out amplitude modulation via signal conditioner, amplify, enter swept signal source output frequency sweep microwave signal after the pre-service such as isolation, the frequency sweep microwave signal is after isolator carries out the isolation of microwave reverse signal, then after attenuator is decayed to the output power of microwave signal source, microwave signal is gone into flue through the transmission antennas transmit that is installed on flue one side, the receiving antenna that symmetry is installed on the flue opposite side receives microwave signal after wave detector is finished microwave signal enters the Signal Pretreatment unit after the conversion of electric signal and carry out filtering, amplify, the A/D that enters in the industrial computer after the signal Processing such as isolation sticks into capable signals collecting, and data send to display after treatment and show output.
Claims (1)
1, station boiler chimney flue type unburned carbon in flue dust on-line measurement device, the microwave emitter (1) that it is characterized in that flue one side installation launched microwave signal, the flue opposite side is installed the microwave receiver (2) that receives microwave signal, the input end of the output termination microwave emitter (1) of full flue signal gathering unit (3), the input end of the full flue signal gathering unit of the output termination of microwave receiver (2) (3), the input of the output of full flue signal gathering unit (3)/go into termination microwave measurement electronic unit (4)/go out end, the input of the output of microwave measurement electronic unit (4)/go into termination main computer unit (5)/go out end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080442 CN2733350Y (en) | 2004-10-21 | 2004-10-21 | Power plant boiler flue duct type fly ash carbon content online measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080442 CN2733350Y (en) | 2004-10-21 | 2004-10-21 | Power plant boiler flue duct type fly ash carbon content online measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2733350Y true CN2733350Y (en) | 2005-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420080442 Expired - Fee Related CN2733350Y (en) | 2004-10-21 | 2004-10-21 | Power plant boiler flue duct type fly ash carbon content online measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2733350Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149133A (en) * | 2013-02-05 | 2013-06-12 | 中国矿业大学 | Electromagnetic wave based coal dust detection method and device |
| CN116539492A (en) * | 2023-07-06 | 2023-08-04 | 深圳市亚能电力技术有限公司 | Method, device and system for detecting content of fly ash particles in real time and computer equipment |
-
2004
- 2004-10-21 CN CN 200420080442 patent/CN2733350Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149133A (en) * | 2013-02-05 | 2013-06-12 | 中国矿业大学 | Electromagnetic wave based coal dust detection method and device |
| CN103149133B (en) * | 2013-02-05 | 2014-11-19 | 中国矿业大学 | Electromagnetic wave based coal dust detection method and device |
| CN116539492A (en) * | 2023-07-06 | 2023-08-04 | 深圳市亚能电力技术有限公司 | Method, device and system for detecting content of fly ash particles in real time and computer equipment |
| CN116539492B (en) * | 2023-07-06 | 2023-09-08 | 深圳市亚能电力技术有限公司 | Method, device and system for detecting content of fly ash particles in real time and computer equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051012 Termination date: 20121021 |