CN207264430U - Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system - Google Patents
Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system Download PDFInfo
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Abstract
It the utility model is related to a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system, monitoring system includes coal pulverizer inlet apparatus for measuring air quantity, coal pulverizer inlet wind-warm syndrome measuring device, coal pulverizer and goes out one's intention as revealed in what one says powder temperature measuring equipment, dynamic separator rotation-speed measuring device, coal-supplying amount measuring device, grinding roller loading force measuring device and the processor being connected with each device, the processor is connected with data display equipment, to show each device measurement data and fineness of pulverized coal result of calculation.Compared with prior art, the utility model can run for the optimization of boiler powder combustion system and provide foundation, improve unit safety, economy and environmental benefit.
Description
Technical field
A kind of coal pulverizer fuel pulverizing plant fineness of pulverized coal monitoring system is the utility model is related to, more particularly, to a kind of positive-pressure type
Medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system.
Background technology
Fineness of pulverized coal is the important factor in order of Combustion Efficiency for Pulverized Fired Boiler, and fineness of pulverized coal is bigger than normal will to cause coal dust after-flame to be stranded
Difficulty, boiler combustion efficiency are low；And fineness of pulverized coal is less than normal, coal pulverizer power consumption is caused to rise, grinding roller rate of depreciation is accelerated.In addition coal
Powder fineness fire intensity etc. to burner hearth NOx generations concentration, burner region considerable influence, therefore for different types of coal presence
The fineness of pulverized coal of an optimization so that it is optimal that boiler in the precondition of safe and environment-friendly operation is issued to economy.
Medium-speed pulverizer generally uses pressurized direct pulverizing coal system, its fineness of pulverized coal is generally obtained by test method,
In the case where coal quality is changed with load change, the fineness of pulverized coal of operation needs to adjust accordingly, if coal quality volatile matter raises
Should be thicker to prevent from burning nozzle by fineness of pulverized coal tune, then should be thin by fineness of pulverized coal tune when unit is run under depth peak regulation situation
Some prevent underload from putting out a fire.But Present Thermal Power factory operation coal quality and load is regular fluctuates widely, can not application test
Means obtain current fineness of pulverized coal as combustion adjustment foundation at any time.
Currently, also there is more research for fineness of pulverized coal real time monitoring, there is the experience that some fineness of pulverized coal calculate
Formula, but due to the change of coal varitation, load variations and coal pulverizer operation conditions, these result of calculations are difficult to effectively be applicable in
In various operation conditions.
Utility model content
The purpose of this utility model be exactly in order to overcome the problems of the above-mentioned prior art and one kind is provided can be real-time
Monitor the positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system of fineness of pulverized coal.
The purpose of this utility model can be achieved through the following technical solutions：
As the first scheme, a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system is described
Fuel pulverizing plant include positive-pressure type medium-speed pulverizer and feeder, the feeder passes through dynamic separator and positive-pressure type middling speed
Coal pulverizer connects, and is equipped with grinding roller in the positive-pressure type medium-speed pulverizer, the monitoring system includes coal pulverizer inlet air quantity
Measuring device, coal pulverizer inlet wind-warm syndrome measuring device, coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment, dynamic separator tachometric survey
Device, coal-supplying amount measuring device, grinding roller loading force measuring device and the processor being connected with each device, the processor are connected with
Data display equipment, to show each device measurement data and fineness of pulverized coal result of calculation.
Alternatively, a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system, it is described
Fuel pulverizing plant include positive-pressure type medium-speed pulverizer and feeder, the feeder passes through static separation device and positive-pressure type middling speed
Coal pulverizer connects, and is equipped with grinding roller in the positive-pressure type medium-speed pulverizer, the monitoring system includes coal pulverizer inlet air quantity
Measuring device, coal pulverizer inlet wind-warm syndrome measuring device, coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment, static separation device deflector baffle
Openness measuring device, coal-supplying amount measuring device, grinding roller loading force measuring device and the processor being connected with each device, the place
Reason device is connected with data display equipment, to show each device measurement data and fineness of pulverized coal result of calculation.
Preferably, the monitoring system further includes seal fan, and the seal fan entrance enters with coal pulverizer warm air
Mouth connection, outlet are connected to feeder and grinding roller.
Preferably, it is temperature sensing that coal pulverizer inlet wind-warm syndrome measuring device and coal pulverizer, which go out one's intention as revealed in what one says powder temperature measuring equipment,
Device.
Preferably, grinding roller loading force measuring device is pressure sensor.
Preferably, the coal-supplying amount measuring device is the electronic belt with weighing sensor and tread speed sensor
Scale.
Compared with prior art, the utility model is by reading fuel pulverizing plant key position measurement data, using processor
Fineness of pulverized coal calculating is carried out, achievees the purpose that to monitor fineness of pulverized coal in real time, can be that the optimization operation of boiler powder combustion system carries
For foundation, unit safety, economy and environmental benefit are improved；Operating parameter is readily available, and is belonged to hard measurement device, is not present
Abrasion, corrosion of the hardware device in coal dust, accuracy is high, operation and maintenance are convenient.
Brief description of the drawings
Fig. 1 is the positive-pressure type medium-speed pulverizer fuel pulverizing plant and its real-time monitoring system structure diagram of the present embodiment 1.
Reference numeral：
1 is positive-pressure type medium-speed pulverizer；2 be coal pulverizer inlet apparatus for measuring air quantity；3 go out the survey of one's intention as revealed in what one says powder temperature for coal pulverizer
Measure device；4 be coal-supplying amount measuring device；5 be fineness measurement device for pulverized coal；6 be seal fan；7 be coal pulverizer inlet warm air；8
For feeder；9 load force measuring device for grinding roller；10 be coal pulverizer inlet wind-warm syndrome measuring device；11 be dynamic separator rotating speed
Measuring device；12 be dynamic separator；13 be coal pipe.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical solution, give detailed embodiment and specific operating process, but the guarantor of the utility model
Shield scope is not limited to following embodiments.
Embodiment
As shown in Figure 1, a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system, fuel pulverizing plant bag
Positive-pressure type medium-speed pulverizer 1 and feeder 8 are included, feeder 8 is connected by dynamic separator with positive-pressure type medium-speed pulverizer 1, just
Grinding roller is equipped with pressure type medium-speed pulverizer 1, monitoring system includes coal pulverizer inlet apparatus for measuring air quantity 2, coal pulverizer inlet wind-warm syndrome
Measuring device 10, coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment 3, dynamic separator rotation-speed measuring device 11, coal-supplying amount measurement dress
4, grinding roller loading force measuring device 9 and processor are put, processor is used to perform following program：Each measuring device is obtained in real time
Measurement result, calculates the operating mode operating parameter of fuel pulverizing plant, and fineness of pulverized coal, branch are obtained according to trained supporting vector machine model
The input quantity for holding vector machine is coal pulverizer inlet air quantity, coal pulverizer inlet wind-warm syndrome, dynamic separator rotating speed, coal-supplying amount, grinding roller add
Carry the raw coal moisture in power and feeder, the raw coal moisture in feeder is by fuel pulverizing plant heat balance principle, using coal pulverizer
Entrance air quantity, coal pulverizer inlet wind-warm syndrome, coal pulverizer go out one's intention as revealed in what one says powder temperature and coal-supplying amount is calculated.
Processor is connected with data display equipment, for showing the measurement data of the real-time calculated value of fineness of pulverized coal and each device.
Monitoring system further includes seal fan 6, and 6 entrance of seal fan is connected with coal pulverizer warm air entrance, and outlet is connected to
Feeder 8 and grinding roller.
It is temperature sensor that coal pulverizer inlet wind-warm syndrome measuring device 10 and coal pulverizer, which go out one's intention as revealed in what one says powder temperature measuring equipment 3, mill
Roller loading force measuring device 9 is pressure sensor, and coal-supplying amount measuring device 4 is with weighing sensor and tread speed sensor
Belted electronic balance.
The operation principle of the system：
(1) medium-speed pulverizer wind powder flow path：Coal pulverizer inlet warm air 7 enters positive-pressure type medium-speed pulverizer 1 by bellows
In, herein with the raw coal combination drying of the feeding of feeder 8, dried raw coal is after grinding roller is milled into the powder of certain fineness in wind
Carrying under after dynamic separator 12, pulverized coal distributor 14 enter coal pipe 13 in.In addition, a small amount of coal pulverizer inlet warm air 7
Sealed wind turbine 6 enters in feeder 8 and Roller of Coal Grinder after being pressurized to be sealed, and prevents coal dust from entering feeder and coal pulverizer
In grinding roller.
(2) by changing coal pulverizer inlet air quantity, coal pulverizer inlet wind-warm syndrome, dynamic separator rotating speed, coal-supplying amount, mill successively
The parameter value such as coal elemental composition (can be identified with raw coal moisture) carries out multi-state experiment, Mei Gegong in roller loading force and feeder
Condition carries out coal dust on coal pipe 13 and samples and analyzes the corresponding fineness of pulverized coal of acquisition, by the operating parameter and coal dust of these operating modes
Fineness inputs as sample and carries out model training and machine learning into the supporting vector machine model of fineness of pulverized coal prediction.
(3) coal pulverizer inlet apparatus for measuring air quantity 2, coal pulverizer inlet wind-warm syndrome measuring device 10, Dynamic Separation are gathered in real time
The parameter value of device rotation-speed measuring device 11, coal-supplying amount measuring device 4 and grinding roller loading force measuring device 9, and calculate feeder 8
These parameter values are inputted the real-time monitoring of software of medium-speed pulverizer fineness of pulverized coal, pass through real-time operation by Central Plains moisture content of coal value
Export fineness of pulverized coal monitor value.
For active service coal dust generating set, most units use positive-pressure type medium-speed pulverizer pulverized coal preparation system, normal fortune
Fineness of pulverized coal can not be known during row, therefore can not correctly carry out optimizing and revising for powder combustion system processed, causes boiler efficiency
Fired when burning nozzle or low volatile coal when deviateing optimal value with NOx concentration, while high volatile coal is used there is also boiler
Burn the risk of unstable even fire extinguishing.Therefore, by the real-time monitoring of fineness of pulverized coal, be conducive to operations staff and carry out boiler optimization tune
It is whole, increase economic efficiency, safety benefit and environmental benefit, there is important realistic meaning.
Embodiment 2
As different from Example 1, feeder 8 is connected by static separation device with positive-pressure type medium-speed pulverizer 1, will dynamic
Separator rotation-speed measuring device replaces with static separation device deflector baffle openness measuring device, and dynamic separator rotating speed is replaced with
Static separation device deflector baffle aperture, can equally realize the function of embodiment 1, other are same as Example 1.
Claims (6)
1. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system, the fuel pulverizing plant include positive pressure
Formula medium-speed pulverizer (1) and feeder (8), the feeder (8) pass through dynamic separator and positive-pressure type medium-speed pulverizer (1)
Connect, grinding roller be equipped with the positive-pressure type medium-speed pulverizer (1),
It is characterized in that, the monitoring system includes coal pulverizer inlet apparatus for measuring air quantity (2), coal pulverizer inlet wind-warm syndrome measures
Device (10), coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment (3), dynamic separator rotation-speed measuring device (11), coal-supplying amount measurement
Device (4), grinding roller loading force measuring device (9) and the processor being connected with each device, the processor even be data show
Device, to show each device measurement data and fineness of pulverized coal result of calculation.
2. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system, the fuel pulverizing plant include positive pressure
Formula medium-speed pulverizer (1) and feeder (8), the feeder (8) pass through static separation device and positive-pressure type medium-speed pulverizer (1)
Connect, grinding roller be equipped with the positive-pressure type medium-speed pulverizer (1),
It is characterized in that, the monitoring system includes coal pulverizer inlet apparatus for measuring air quantity (2), coal pulverizer inlet wind-warm syndrome measures
Device (10), coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment (3), static separation device deflector baffle openness measuring device, coal-supplying amount
Measuring device (4), grinding roller loading force measuring device (9) and the processor being connected with each device, the processor are connected with data
Display, to show each device measurement data and fineness of pulverized coal result of calculation.
3. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system according to claim 1 or 2,
It is characterized in that, the monitoring system further includes seal fan (6), the seal fan (6) entrance and coal pulverizer warm air
Entrance connects, and outlet is connected to feeder (8) and grinding roller.
4. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system according to claim 1 or 2,
Passed it is characterized in that, coal pulverizer inlet wind-warm syndrome measuring device (10) and coal pulverizer go out one's intention as revealed in what one says powder temperature measuring equipment (3) for temperature
Sensor.
5. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system according to claim 1 or 2,
It is characterized in that, the grinding roller loading force measuring device (9) is pressure sensor.
6. a kind of positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system according to claim 1 or 2,
It is characterized in that, the coal-supplying amount measuring device (4) is the belted electronic balance with weighing sensor and tread speed sensor.
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| CN201721280219.7U CN207264430U (en) | 2017-09-30 | 2017-09-30 | Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system |
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| CN108763651A (en) * | 2018-04-28 | 2018-11-06 | 国网山东省电力公司电力科学研究院 | A method of matching windshield plate overcurrent characteristic from boiler operatiopn extracting data burner |
| CN109028129A (en) * | 2018-08-17 | 2018-12-18 | 国电科学技术研究院有限公司 | A kind of station boiler and its for pulverized coal system |
| CN109174321A (en) * | 2018-09-28 | 2019-01-11 | 国电龙源节能技术有限公司 | Coal pulverizer automatic regulating system and coal pulverizer Automatic adjustment method |
| CN109541168A (en) * | 2018-11-26 | 2019-03-29 | 江苏方天电力技术有限公司 | A kind of economic fineness of pulverized coal on-line monitoring and method of adjustment |
| CN109530072A (en) * | 2018-11-09 | 2019-03-29 | 南京工程学院 | A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency |
| CN109615084A (en) * | 2017-09-30 | 2019-04-12 | 中电华创电力技术研究有限公司 | Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system |
| CN109977583A (en) * | 2019-04-03 | 2019-07-05 | 东南大学 | A kind of coal pulverizer simulation model dynamic parameter setting method of combination verifying model |
| CN111437931A (en) * | 2019-01-16 | 2020-07-24 | 上海戎川机电工程设备有限公司 | Medium speed coal mill |
| CN111570070A (en) * | 2020-05-25 | 2020-08-25 | 广东电科院能源技术有限责任公司 | Fire extinguishing steam control method, device, equipment and storage medium for medium-speed coal mill |
| CN114054191A (en) * | 2021-11-17 | 2022-02-18 | 西安热工研究院有限公司 | Coal mill pulverized coal optimal fineness evaluation method based on cost change |
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| CN109615084A (en) * | 2017-09-30 | 2019-04-12 | 中电华创电力技术研究有限公司 | Positive-pressure type medium-speed pulverizer fuel pulverizing plant fineness of pulverized coal real-time monitoring system |
| CN108763651A (en) * | 2018-04-28 | 2018-11-06 | 国网山东省电力公司电力科学研究院 | A method of matching windshield plate overcurrent characteristic from boiler operatiopn extracting data burner |
| CN108763651B (en) * | 2018-04-28 | 2022-04-12 | 国网山东省电力公司电力科学研究院 | Method for extracting flow passing characteristic of air distribution baffle of combustor from boiler operation data |
| CN109028129A (en) * | 2018-08-17 | 2018-12-18 | 国电科学技术研究院有限公司 | A kind of station boiler and its for pulverized coal system |
| CN109174321A (en) * | 2018-09-28 | 2019-01-11 | 国电龙源节能技术有限公司 | Coal pulverizer automatic regulating system and coal pulverizer Automatic adjustment method |
| CN109530072B (en) * | 2018-11-09 | 2020-11-10 | 南京工程学院 | Method for monitoring comprehensive energy efficiency of powder making system on line |
| CN109530072A (en) * | 2018-11-09 | 2019-03-29 | 南京工程学院 | A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency |
| CN109541168A (en) * | 2018-11-26 | 2019-03-29 | 江苏方天电力技术有限公司 | A kind of economic fineness of pulverized coal on-line monitoring and method of adjustment |
| CN111437931A (en) * | 2019-01-16 | 2020-07-24 | 上海戎川机电工程设备有限公司 | Medium speed coal mill |
| CN109977583A (en) * | 2019-04-03 | 2019-07-05 | 东南大学 | A kind of coal pulverizer simulation model dynamic parameter setting method of combination verifying model |
| CN109977583B (en) * | 2019-04-03 | 2023-05-02 | 东南大学 | Dynamic parameter setting method for coal mill simulation model combined with verification model |
| CN111570070A (en) * | 2020-05-25 | 2020-08-25 | 广东电科院能源技术有限责任公司 | Fire extinguishing steam control method, device, equipment and storage medium for medium-speed coal mill |
| CN111570070B (en) * | 2020-05-25 | 2021-07-30 | 南方电网电力科技股份有限公司 | Fire extinguishing steam control method, device, equipment and storage medium for medium-speed coal mill |
| CN114054191A (en) * | 2021-11-17 | 2022-02-18 | 西安热工研究院有限公司 | Coal mill pulverized coal optimal fineness evaluation method based on cost change |
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